JP7288795B2 - door device - Google Patents

Description

The present invention relates to a door device, and more particularly, when an air pressure difference occurs between a first space and a second space partitioned by a door with an opening fully closed, the difference between the first space and the second space The present invention relates to a door device provided with a differential pressure relief mechanism capable of relieving pressure and reducing door opening force.

In buildings equipped with smoke control means such as smoke exhaust equipment that prevents smoke from entering by creating a pressure difference between adjoining rooms in the event of a fire, pressurized smoke exhaust equipment, etc. A pressure difference may occur between the inside and the outside, and if this pressure difference becomes a resistance to the opening of the door and the opening force of the door becomes heavy, it may interfere with evacuation and firefighting activities.

On the other hand, the door is vertically divided into two parts, one on the door front side and the other on the door bottom side. Normally, the two door bodies are connected to form an integrated door that can be opened and closed. A study was made on reducing the pressure difference by creating a gap that communicates the inside and outside spaces of the door by releasing and opening the door so that it folds in two. At this time, the opening motion of the door by folding is different from the motion trajectory of a general door, so there is a problem in the operability when the door is opened. In addition, if the door on the door side opens to a certain opening angle, a gap that can eliminate the pressure difference can be secured, but if the door on the door side opens more than necessary, operability may worsen. There is

In Patent Document 1, the door is divided into two parts, a hanging door and a door end door, and by opening the door end door with a smaller area first, the pressure difference between the first space and the second space is alleviated and the door is opened. Differential pressure relief mechanisms have been proposed to reduce the opening force. The differential pressure reducing mechanism disclosed in Patent Document 1 achieves its purpose by adjusting the closing force of the door closer, the force required to release the latch, and the closing force of the hinge closer. A specific configuration for limiting is not disclosed.
Patent No. 5535348

The present invention provides a door device having a differential pressure relief mechanism in which a door is composed of a first door body and a second door body. The object is to limit the rotation angle to a predetermined angle.

The technical means adopted by the present invention to solve such problems is
A door device comprising a first door body and a second door body for opening and closing an opening formed by a door frame,
The door edge side of the first door body can be engaged with and detached from the door edge side of the door frame,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the opening is fully closed, the first door body and the second door body face each other closely with a gap between the prospective surfaces to form the door,
When the door is initially opened from the fully closed position, if a pressure difference that acts as a resistance to opening the door is generated, the pressure difference can be eliminated by rotating only the first door body.
A rotation angle regulating means of the first door body is provided in the gap, and the rotation angle regulating means permits the first door body to turn to an extent capable of canceling the differential pressure, and the opening is opened. restricting the rotation of the first door body with respect to the second door body when only the first door body is rotated by a predetermined angle from the fully closed state;
door device.
In one aspect, when the opening is fully closed, the viewing surface of one of the first door body and the second door body is positioned on the first side of the gap in which the rotation angle restricting means is provided. a protruding piece protruding from is adjacent to the projected surface of the other door body, is located on the second side of the gap, and is provided on the projected surface of one of the first door body and the second door body The airtight member is in close contact with the prospective surface of the other door.
By doing so, when the opening is fully closed, the rotation angle regulating means is not visible from the outside, and the design is excellent.
In one aspect, the gap provided with the rotation angle restricting means is a gap extending in the height direction formed between the projection surfaces extending in the height direction.
In one aspect, the gap provided with the rotation angle regulating means is located near the rotation axis of the first door body.

In one aspect, the rotation angle regulating means includes a first element provided on one of the projected surface of the first door body and the projected surface of the second door body, and a second element provided on the other projected surface of the second door body. wherein the first element and the second element are positioned in the gap when the opening is fully closed, and the first element and the second element are positioned in the gap when only the first door body is rotated by a predetermined angle from the time when the opening is fully closed. The one element and the second element abut to restrict the rotation of the first door with respect to the second door.
In one aspect, the first element and the second element of the rotation angle restricting means are provided on the projection surface near the rotation axis of the first door body.
In one aspect, the first element is a receiving portion formed on the viewing surface, the second element is a projection protruding from the viewing surface,
When the opening is fully closed, the protrusion is positioned at a first position within the receiving portion,
When the first door body rotates by a predetermined angle from the closed posture, the protrusion moves to a second position within the receiving part and comes into contact with the receiving part, thereby opening the first door relative to the second door body. Rotation of the body is restricted.
In one aspect, the receiving portion is an opening formed in the viewing surface and the portion of the receiving portion is the edge of the opening.

In one aspect, the first element is a receiving portion formed on the projection surface of the first door body, and the second element is a projection formed on the projection surface of the second door body.
In one aspect, the first element and the second element are located in a gap extending in the height direction formed between the projection surfaces extending in the height direction and provided on the projection surfaces extending in the height direction. be.
In one aspect, the projected surface of the first door body includes the top surface on the door tip side and the top surface on the trailing edge side having different heights, the edge on the trailing edge side of the top surface on the door tip side, and the edge on the trailing edge side on the top surface on the trailing edge side. Between the upper intermediate projection surface extending in the height direction, the lower surface on the door tip side and the lower surface on the door trailing edge side at different heights, and the edge on the trailing edge side of the lower surface on the tip side and the edge on the trailing edge side on the lower surface on the trailing edge side a lower intermediate viewing surface extending in the height direction at
The projection surface of the second door includes an upper projection surface and a lower projection surface that face the upper intermediate projection surface and the lower intermediate projection surface of the first door body with a gap when the opening is fully closed,
One of the first element and the second element of the rotation angle regulating means is provided on the upper intermediate projection surface and the lower intermediate projection surface of the first door body, and the other is provided on the upper projection surface and the lower projection surface of the second door body. provided on the face.

In one aspect, the first element and the second element are provided on a projection surface extending in a height direction, and the second element has an L shape in cross section from the first portion and the second portion. In a state in which the first door body is rotated to the first side with respect to the second door body, the second door body is inserted into the gap between the projection surface of the first door body and the projection surface of the second door body. The shape and dimensions allow insertion from the side,
The second element is in a state in which the first part is in contact with the expected surface of the second door body, and the second part is inserted as a projection into the receiving part of the expected surface of the first door body, The first portion is secured to the viewing surface of the second door.

In one aspect, an airtight member is provided on a second side portion of the prospective surface of the first door body,
The second element includes the airtight member provided on the prospective surface of the first door body in a state where the first door body is rotated to the first side with respect to the second door body, and the second door body. It has a shape and dimensions that can be inserted from the space between the second side part of the prospective surface,
the first portion of the second element is fixed to a second side portion of the viewing surface of the second door body by a screw;
When the opening is fully closed, the screw is concealed by the airtight member coming into contact with the second side portion of the projection surface of the second door body.

In one aspect, a reinforcing member is fixed to a portion spaced apart from the second side portion of the projection surface of the second door body,
The reinforcing member has a contact portion rising from the projection surface, and the projecting dimension of the contact portion is larger than the gap between the projection surfaces where the first element and the second element are positioned when the opening is fully closed. The contact portion is small and positioned on the first side of the base end portion of the projection formed by the second portion, and is in contact with or is close to the base end portion in a contactable state.

Another technical means adopted by the present invention is
A door for opening and closing an opening formed by a door frame is composed of a first door body and a second door body,
The door edge side of the first door body can be engaged with and detached from the door edge side of the door frame,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the door is first opened from the fully closed position, if there is a differential pressure that acts as a resistance to opening the door, only the first door body is rotated to the first side to eliminate the differential pressure. In the door system composed of:
The first projection surface of the first door body and the second projection surface of the second door body extend in the height direction, and when the opening is fully closed, the first projection surface and the second projection surface face each other. a gap extending in the height direction is formed in the gap, and a receiving portion is formed on one of the first and second projection surfaces,
Assuming that the first door body is rotated to the first side with respect to the second door body in the closed position, the gap between the first projection surface of the first door body and the second projection surface of the second door body is to form an insertion space on the second side,
A state in which a rotation angle regulating member having a projection is inserted between the first projection surface and the second projection surface from the insertion space, and the projection is inserted into the receiving portion of the one projection surface. and fixing the rotation angle regulating member to the other prospective surface on which the receiving portion is not formed;
A method of mounting a rotation angle regulating member in a door device.
In one aspect, the receiving portion is formed on the first prospective surface of the first door body,
The rotation angle regulating member having an L-shaped cross section composed of the first portion and the second portion forming the protrusion is inserted from the insertion space between the first projection surface and the second projection surface. and the first portion is brought into contact with the second projection surface, and the second portion is inserted into the receiving portion of the first projection surface,
A first portion of the rotation angle regulating member is fixed to the second projection surface with a screw.
By adopting such an attachment method, the rotation angle regulating member can be retrofitted to the second door body after the first door body is hung.

In the present invention, the first door body is allowed to rotate to such an extent that the differential pressure can be eliminated. By providing a rotation angle regulating means for regulating the rotation of the first door body, when a differential pressure that acts as a resistance to opening the door is generated at the initial movement of the door from the fully closed position of the opening, the first door body The chisel is rotated by a predetermined angle to eliminate the differential pressure, while the excessive rotation of the first door body is restricted, thereby improving the operability when the door is opened.
Since the rotation angle regulating means is provided in the gap between the projected surface of the first door body and the projected surface of the second door body, when the opening is fully closed and when the first door body is rotated, The opening angle of the first door body can be restricted while the design is ensured without the rotation angle restricting means being exposed to the outside of the door.

It is the front view which looked at the door apparatus (opening fully closed state) which concerns on 1st Embodiment from the 2nd space side. It is the front view which looked at the door device (opening fully closed state) which concerns on 1st Embodiment from the 1st space side. FIG. 3 is a longitudinal sectional view seen from A1 in FIG. 2; FIG. 3 is a longitudinal sectional view seen from A2 in FIG. 2; 3 is a cross-sectional view seen from A3 in FIG. 2; FIG. 3 is a cross-sectional view seen from A4 in FIG. 2; FIG. (A) is a vertical cross-sectional view seen from A5 in FIG. 5, and (B) is a cross-sectional view seen from A6 in FIG. It is a figure which shows a rotation angle control member. It is the front view which looked at the door apparatus (opening fully closed state) which concerns on 2nd Embodiment from the 2nd space side. It is the front view which looked at the door apparatus (opening fully closed state) which concerns on 2nd Embodiment from the 1st space side. FIG. 11 is a longitudinal sectional view seen from B1 in FIG. 10; FIG. 11 is a longitudinal sectional view seen from B2 in FIG. 10; In the second embodiment, it is a diagram corresponding to FIG. 7 showing the first embodiment. FIG. 10 is a diagram showing a state in which the first door body is rotated 90 degrees with respect to the second door body, and a diagram in which the rotation angle is further reduced; 1 is a cross-sectional view viewed from . FIG. 11 is a view showing the attachment of the rotation angle regulating member, and the first door body and the second door body are shown in cross-sectional view as seen from B3-B3 in FIG. 10; The first door body and the second door body are shown in a state in which they are integrally rotated, and the first door body and the second door body are shown in a horizontal cross-sectional view as seen from B4 in FIG. 10 . Only the first door body is rotated by a predetermined angle, and the first door body and the second door body are shown in cross-sectional view as viewed from B4 in FIG. The state in which the first door body and the second door body are rotated from the state in FIG. 17 is shown. FIG. 5 is a partially enlarged view showing how the rotation angle regulating member fits when the opening is fully closed; It is the elements on larger scale which show the state by which rotation of the 1st door body was regulated by the rotation angle control member. (A) is a diagram corresponding to the portion of FIG. 4, and (B) is a diagram corresponding to the portion of FIG. 12, showing a notch portion of the frame. FIG. 4 is a cross-sectional view showing a state in which the first door body is rotated 90 degrees with respect to the second door body, and shows the positional relationship between the cutout portion of the frame of the first door body and the corner portion of the second door body; ing. FIG. 23 is a transverse cross-sectional view showing a state in which the first door body has been rotated by a predetermined angle in the closing direction from the state of FIG. showing. 1 is a front view showing an example in which a door device according to the present invention is applied to a double door; FIG. (A) is a cross-sectional view showing an electric lock that connects a first door body and a second door body, and (B) is a front view showing an unlocking operation portion of a latch for an inspection decorative cover and an electric lock.

[A] Overall Configuration of Door Device A door device according to the present embodiment is installed in an opening provided in a frame that divides a first space and a second space. The building where the door device is installed is equipped with smoke control means such as smoke exhaust equipment and pressurized smoke exhaust equipment that prevent smoke from entering by creating a pressure difference between adjacent rooms in the event of a fire. In the fully closed state of the opening, the pressure in the first space may become higher than the pressure in the second space. That is, in this embodiment, when the opening is fully closed, the first space and the second space have substantially the same atmospheric pressure in normal times. Higher pressure than space. The door device according to the present embodiment includes the differential pressure reducing mechanism, so that the door can be smoothly opened even when there is an air pressure difference between the first space and the second space.

In the door apparatus according to the present embodiment, the doors for opening and closing the opening formed by the door frame 1 are a first door body (door body) 2 positioned on the door tip side and a door body positioned on the door bottom side. The first door body 2 is rotatably attached to the second door body 3 , and the second door body 3 is attached to the door frame 1 . It is mounted so as to be rotatable. The doors (the first door body 2 and the second door body 3) according to the present embodiment are hinged doors that open the building opening by rotating from the fully closed position toward the first space. In this specification, the side on which the door opens is referred to as "first space side" or "first side", and the opposite side is referred to as "second space side" or "second side".

The door frame 1 is a vertically rectangular four-peripheral frame composed of a door leading side vertical frame 10, a door trailing side vertical frame 11, an upper frame 12 and a lower frame 13, and forms a vertically rectangular opening. are doing. The first door body 2 and the second door body 3 form a vertical rectangular door in a state where the first door body 2 is in a closed position with respect to the second door body 3 and integrated with each other. close the opening of

The door device according to this embodiment includes a differential pressure reducing mechanism or differential pressure reducing means, and when the door is normally opened from the fully closed position of the opening, the first door 2 rotates with respect to the second door 3. When the movement is restricted, the first door body 2 and the second door body 3 can rotate integrally, and when the door is initially opened from the fully closed position of the opening, a differential pressure is generated that acts as a resistance to opening the door. is configured to first rotate only the first door body 2 to eliminate the differential pressure, and then rotate the first door body 2 and the second door body 3 to open the opening. .

In this embodiment, the differential pressure reducing means includes a connecting device comprising a first member provided on the first door body and a second member provided on the second door body, and the connecting device comprises the first door member in the closed posture. The door body can be connected to the second door body. The coupling device is normally in a locked state, restricts rotation of the first door body with respect to the second door body, and allows the first door body and the second door body to rotate integrally, The coupling device is unlocked based on a signal generated in an emergency such as a fire, allowing the first door body to rotate with respect to the second door body, and allowing the door to move from the fully closed position of the opening. Only the first door body can be rotated when there is a differential pressure that acts as a resistance to opening the door at the time of the initial movement of the door. A detailed configuration of the differential pressure reducing means according to the present embodiment will be described later. Further, the differential pressure reducing means that can be used in the present invention is not limited to those using such a coupling device, and for example, known differential pressure reducing means (for example, the differential pressure pressure relief mechanism) may be used.

The door device according to this embodiment includes a rotation angle regulating means for regulating the rotation of the first door 2 when only the first door 2 is rotated by a predetermined angle from the fully closed position of the opening. A detailed description of the rotation angle regulating means will be given later.

[B] Configuration of Door of Door Device (First Embodiment of Door Shape)
FIG. 1 is a front view of the door device according to the present embodiment viewed from the second space side, and FIG. 2 is a front view of the door device viewed from the first space side. The door for opening and closing the opening formed by the door frame 1 consists of a first door body (door head side door body) 2 mainly positioned on the door front side and a second door body (door tail side door body) mainly positioned on the door bottom side. The first door body 2 is rotatably attached to the second door body 3, and the second door body 3 is rotatable to the door frame 1. is installed.

The first door body 2 has a first viewing surface 20 facing the first space, a second viewing surface 21 facing the second space, a vertically extending door tip side end surface 22, and a vertically extending door bottom. A side end surface 23, a horizontally extending top surface 24, a top surface 25 extending horizontally, and a door bottom side end portion of the door top surface 24 and a door bottom side end portion of the door bottom side top surface 25. A vertically extending upper intermediate projection surface 26, a horizontally extending door tip side lower surface 27, a horizontally extending door tail side lower surface 28, a door tail side end portion of the door tip side lower face 27 and the door tail side lower face 28. and a lower intermediate viewing surface 29 extending vertically between the door tip end. The height dimension of the door tip side end surface 22 is larger than the height dimension of the door tail side end face 23, the door tip side upper face 24 is positioned above the door tail side upper face 25, and the door tip side lower face 27. is located below the bottom surface 28 on the side of the door bottom. The first door body 2 has a stepped upper surface (door tip side upper surface 24 and door bottom side upper surface 25) and a stepped lower surface (door tip side lower surface 27 and door trailing side lower surface 28). , so to speak, has a lateral convex shape.

The second door body 3 has a first viewing surface 30 facing the first space, a second viewing surface 31 facing the second space, an upper end surface 32 extending vertically, and a lower end surface 32 extending vertically. Equipped with a door tip side end face 33, a vertically extending door trailing end face 34, a horizontally extending upper end face 35, and a horizontally extending lower end face 36, and laterally projecting from the door tip side end toward the door trailing edge side. A shaped opening is formed. As shown in FIG. 1, the second door body 3 has a U-shape in a front view from an upper portion 3A, a lower portion 3B, and a door tail side portion 3C. , and the space surrounded by the door bottom side portion 3C is a laterally convex opening. It is slightly larger than the dimensions of the first door body 2 .

The upper end surface 32 of the second door body 3 is the end surface of the upper part 3A, the upper end surface 35 of the second door body 3 is the upper surface of the upper part 3A, and the lower surface 37 of the upper part 3A extends horizontally. a door tip side lower surface 370, a door tail side lower face 371 horizontally extending at a position lower than the door tip side lower face 370, a door tail side end portion of the door tip side lower face 370, and a door tip side end portion of the door tail side lower face 371 and an upper intermediate viewing surface 372 extending vertically between and.

The lower door tip side end face 33 of the second door body 3 is the door tip side end face of the lower part 3B, the lower end face 36 of the second door body 3 is the lower face of the lower part 3B, and the upper face 38 of the lower part 3B is A door tip side upper surface 380 extending horizontally, a door tail side upper surface 381 horizontally extending at a position higher than the door tip side upper surface 380, a door tail side end portion of the door tip side upper surface 380, and a door tip of the door tail side upper surface 381. and a lower intermediate viewing surface 382 extending vertically between the side ends.

The trailing edge side end surface 34 of the second door body 3 is the trailing edge side edge surface of the trailing edge side portion 3C, and the trailing edge side portion 3C has a door trailing edge side end surface 39 extending vertically.

In the second door body 3, the lower surface 37 of the upper portion 3A (the door tip side lower surface 370, the door tail side lower surface 371, the upper intermediate projected surface 372) and the upper surface 38 of the lower portion 3B (the door tip side upper surface 380, the door tail side A projected surface of the peripheral edge of the opening of the second door body 3 is formed from the side upper surface 381, the lower intermediate projected surface 382), and the door tip side end surface 39 of the door tail side portion 3C.

The trailing edge side portion of the second door body 3 (door trailing end surface 34 in this embodiment) is rotated by the hinge 14 to the door trailing side portion of the door frame 1 (door trailing side vertical frame 11 in this embodiment). installed as possible. The second door body 3 is urged in the closing direction with respect to the door frame 1 by a door closer 15 provided between the upper end portion of the door tail side portion 3C and the door tail side portion of the upper frame 12 of the door frame 1 . . In the illustrated embodiment, the tail-side portion of the second door body 3 is attached to the door tail-side vertical frame 11 by means of hinges 14. For example, the second door body 3 may be attached to a pivot hinge (e.g. It may be rotatably attached to the door trailing edge side portions of the upper frame 12 and the lower frame 13 using a hanging type.

The first door body 2 is rotatably attached to the second door body 3 so that the opening of the second door body 3 can be opened and closed. By taking the posture, the first door body 2 and the second door body 3 are integrated to form one door (rectangular shape in front view). When the first door body 2 is in the closing posture with respect to the second door body 3, the door tip side end face 22 of the first door body 2, the upper door tip side end face 32 of the second door body 3, and the lower door tip side end face 33 is located on the same vertical plane and becomes the end surface of the door tip side of the door, and the upper end surface 35, the lower end surface 36 and the trailing end surface 34 of the second door body 3 are the upper end surface, the lower end surface and the door trailing edge of the door. It has a side end surface. In this embodiment, the door thicknesses (estimated dimensions) of the first door body 2 and the second door body 3 are the same, but the door thicknesses may be different.

When the first door body 2 is in the closing posture with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the prospective surface (the top surface 24 on the door tip side, the top surface 25 on the door bottom side, and the upper middle prospective surface 26) , lower surface 27 on the door trailing side, lower surface 28 on the trailing edge side, lower intermediate projection surface 29, end surface 23 on the trailing edge side) and the peripheral surface of the opening of the second door body 3, that is, projection surfaces (lower surface 370 on the trailing side, trailing edge side A lower surface 371, an upper intermediate prospective surface 372, a door top surface 380, a door tail side upper surface 381, a lower intermediate prospective surface 382, and a door tip end surface 39) are closely opposed to each other with a gap therebetween.

A handle H is provided at an intermediate position in the height direction on the door tip side portions of the first viewing surface 20 and the second viewing surface 21 of the first door body 2 . A latch L1 is built in the door tip side portion of the first door body 2, and the latch is positioned between a locking posture protruding from the door tip side end face 22 and a retracted posture retracted into the door tip side end face 22. It is movable. The latch L1 is biased so as to maintain the locking posture, and when the first door body 2 is in the closed posture, the latch L1 is engaged with the latch receiver 1000 formed on the projection surface 100 of the door leading side vertical frame 10 of the door frame 1. is locked, the closed position of the first door body 2 is maintained. By operating the handle H, the latch L1 in the locking posture is brought into the retracted posture, so that the locked state of the door edge side of the first door body 2 is released, and the first door body 2 can be opened. When the first door body 2 and the second door body 3 are connected and integrated, the handle H is operated to release the locked state of the latch L1, and the door (the first door body 2 + the second door body 3) can be opened.

At approximately the center of the width direction of the stepped upper surface (door tip side upper surface 24, door trailing side upper surface 25) and the stepped lower surface (door tip side lower surface 27, door trailing side lower surface 28) of the first door body 2 , a hinge closer for providing a pivot axis P for the first door member 2 is provided. The first door body 2 is rotatably attached to the second door body 3 about a rotation axis P. As shown in FIG. The hinge closer consists of an upper hinge portion P1 and a lower hinge portion P2. Such hinge closers are well known to those skilled in the art and will not be described in detail. It should be noted that a pivot hinge (for example, a center suspension type or a protruding suspension type) may be provided with a separate component having an urging force.

As shown in FIG. 5, in this embodiment, the rotation axis P of the first door body 2 is located on the first space side ( (first viewing surface 20, first viewing surface 30 side). By biasing the rotation axis P of the first door body 2 toward the first space, when the opening is fully closed, the tip of the projecting piece 200 of the first viewing surface 20 of the first door body 2 can be moved toward the second door. The upper intermediate projection surface 372 and the lower intermediate projection surface 382 of the body 3 can be brought close to each other while avoiding contact, and the upper intermediate projection surface 26 of the first door member 2 and the upper intermediate projection surface 372 of the second door member 3 As far as possible, the first space side of the gap G between the It can be made narrower. By doing so, the design (the appearance of the first viewing surface 20 of the first door 2 and the first viewing surface 30 of the second door 3 is more unified) and the airtightness are improved. In the present invention, the position of the rotation axis P within the thickness of the door is not limited to the illustrated embodiment, and the rotation axis P of the first door body 2 is It is not limited to being positioned within the thickness of the first door body 2 .

In this embodiment, the rotation axis P is positioned substantially at the center of the width of the first door body 2 . In this embodiment, the width dimension of the top surface 24 on the door tip side of the first door 2 is smaller than the width dimension of the top surface 25 on the door bottom side, and the width dimension of the bottom surface 27 on the door bottom side is smaller than the width dimension on the bottom surface 28 on the door bottom side. is also small. The first door body 2 has an upper hinge portion P1 and a lower hinge portion P2, so that the door trailing side upper surface 25 and the door trailing lower surface 28 of the door trailing side are connected to the second door body 3. It is rotatably attached to a door tip side portion of a door bottom side lower surface 371 of the lower surface 37 of the upper portion 3A and a door tip side portion of a door trailing side upper surface 381 of the upper surface 38 of the lower portion 3B. The rotation axis P of the first door body 2 is the gap between the upper intermediate projection surface 26 of the first door body 2 and the upper intermediate projection surface 372 of the second door body 3, and the lower intermediate projection surface of the first door body 2. 29 and the lower intermediate projection surface 382 of the second door member 3 . In this embodiment, the rotation axis P is positioned at the center of the width of the first door body 2, but the position of the rotation axis P is different from the center of the width direction of the first door body 2. It may be biased toward the door leading edge side or the door trailing edge side.

The first door 2 is urged in a direction (closing direction) to maintain the closed posture with respect to the second door 3 . In this embodiment, the hinge closer is a hinge closer having a spring that biases the first door 2 in the closing direction, and also functions as means for closing the first door 2 . More specifically, at least one of the upper and lower hinge portions (the lower hinge portion P2 in the illustrated embodiment) has a built-in spring that constitutes means for closing the first door 2. The first door body 2 is biased in the closing direction. In this embodiment, the closing force of the first door member 2 (hinge closer) is set to be greater than the closing force of the second door member 3 (door closer 15), but the present invention is not limited to this. In this embodiment, the closing means for the first door 2 is built in the hinge closer, but the closing means may be provided independently of the rotating portion (hinge) of the first door 2 .

In this embodiment, the lower hinge portion P2 incorporates a mechanism for adjusting the torque and speed of the hinge closer, and the first viewing surface 20 of the first door body 2 has a A rectangular opening is formed in the opening, and a cover plate C made of steel or stainless steel is detachably fixed to the opening with screws (see FIG. 2). In particular, the steel cover plate C can be painted to match the paint color of the door and has a good design. Since the cover plate C is fixed with screws, it does not come off from the first viewing surface 20 of the first door body 2, unlike the case where a resin cap is fitted into the opening.

The airtight structure of the door device according to this embodiment will be described. The door frame 1 is provided with a door stopper with which the peripheral portions of the doors (the first door body 2 and the second door body 3) in the closed position (the door tip side portion, the door bottom side portion, and the upper side portion) come into contact. ing. More specifically, as shown in FIG. 5, in the door tip side vertical frame 10, the door tip side end face of the door in the closing posture (that is, the door tip side end face 22 of the first door body 2, the second door body On the second space side of the projection surface 100 where the door tip side end faces 32, 33) of No. 3 are closely opposed, a groove portion opening toward the first space is formed over the opening height direction, and the groove portion has a door opening. A front airtight member (airtight rubber) S1 is provided.

In the trailing edge side vertical frame 11, a groove portion opening toward the first space is formed on the second space side of the projection surface 110 facing closely to the trailing edge side end surface 34 of the second door body 3 in the closed posture. The groove portion is provided with an airtight member (airtight rubber) S2 on the rear side of the door.

As shown in FIGS. 3 and 4, in the upper frame 12, the upper end surface 35 of the second door body 3 in the closed posture opens toward the first space on the second space side of the lower surface 120 which is closely opposed. A groove is formed across the width of the opening, and an upper airtight member (airtight rubber) S3 is provided in the groove.

When the opening is fully closed, the peripheries of the three sides of the door (the door tip side, the door bottom side, and the upper side), specifically, the second face 21 of the first door body 2 and the second face of the second door body The front end side portion of the attachment surface 31, the rear end side portion of the second facing surface 31 of the second door body 3, and the upper portion of the second door body 3 are made of the door end side airtight rubber S1 and the door rear side airtight rubber S2. , the upper airtight rubber S3.

A lower part of the second door body 3 is provided with an airtight member S4 that protrudes downward beyond the lower end surface 36 of the second door body 3 when the door is in the fully closed posture. , the airtight member S4 protruding downward from the lower end surface 36 of the second door member 3 is in close contact with the upper surface 130 of the lower frame 13 (see FIGS. 3 and 4). Therefore, when the opening is fully closed, an airtight structure is continuously formed around the opening.

When the opening is fully closed, the door according to the present embodiment has the peripheral surface of the first door body 2, that is, the projection surface (the top surface 24 on the door bottom side, the top surface 25 on the door bottom side, the upper intermediate projection surface 26, and the bottom surface 27 on the door bottom side). , trailing side lower surface 28, lower intermediate projection surface 29, door trailing end surface 23) and the peripheral surface of the second door body 3, that is, projection surfaces (door tip side lower surface 370, door trailing side lower surface 371, upper intermediate projection surface 372, Peripheral frames (first frame 90 to seventh frame 96) are provided ( See Figure 1). The peripheral frame according to this embodiment includes the peripheral frame (second frame 91, third frame 92, fifth frame 94, sixth frame 95, seventh frame 96) provided on the first door body 2, and the second door and a peripheral frame (first frame 90, fourth frame 93) provided on the body 3.

Airtight members (airtight rubber) S5 to S11 are attached to the first frame 90 to the seventh frame 96, respectively, and the gaps are continuously closed by the airtight members S5 to S11. The first to seventh frames 90 to 96 form grooves extending along the gaps, and airtight members S5 to S11 are fitted in the grooves. and the second door body 3. More specific description will be given below.

As shown in FIG. 3, the first frame 90 is provided so as to protrude downward from the door leading side lower surface 370 along the door leading side lower surface 370 of the upper portion 3A of the second door 3. An airtight member S5 is provided in the concave groove of 90. As shown in FIG. The second space side portion of the top surface 24 of the door tip side of the first door body 2 is a recessed portion composed of a horizontal surface 211 and a vertical surface 212. When the opening is fully closed, the lower half portion of the first frame 90 is recessed. A gap is formed by the first frame 90 and the recessed portion, and the airtight member S5 is positioned between the bottom surface 370 of the second door body 3 on the front end side and the vertical surface 212 of the first door body 2. The second side part of the gap between the top surface 24 of the first door body 2 and the bottom surface 370 of the second door body 3 is closed. The first frame 90 is contained within the thickness of the second door body 3 and does not protrude from the second viewing surface 31. - 特許庁

As shown in FIG. 5, the second frame 91 is provided along the upper intermediate projection surface 26 of the first door body 2 so as to protrude from the upper intermediate projection surface 26 toward the door bottom side. An airtight member S6 is provided in the groove. When the opening is fully closed, a gap G is formed between the upper intermediate projection surface 26 of the first door member 2 and the upper intermediate projection surface 372 of the second door member 3, and the second frame 91 is positioned in the clearance G. The airtight member S6 is in close contact with the upper intermediate projection surface 372 of the second door member 3, thereby blocking the second side portion of the gap G. As shown in FIG. The first viewing surface 20 of the first door member 2 is a projecting piece 200 that protrudes beyond the upper intermediate viewing surface 26, and when the opening is fully closed, the tip of the projecting piece 200 extends toward the second door member 3. is adjacent to the upper intermediate viewing surface 372 of the . In this embodiment, the rotation angle regulating member 8 and the reinforcing members (83, 84) are positioned in the gap G, and when the opening is fully closed, the second portion 81 of the rotation angle regulating member 8 and the reinforcing member (83, 84) are provided. The second portion 84 of the member faces the viewing surface of the second frame 91 and the projecting piece 200, thereby forming an interlocking structure. The second frame 91 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

As shown in FIG. 4, the third frame 92 is provided so as to protrude upward from the door bottom side upper surface 25 along the door trailing side upper surface 25 of the first door body 2 . is provided with an airtight member S7. The second space side part of the bottom surface 371 of the door trailing edge side of the second door body 3 is a recessed part consisting of a horizontal surface 312 and a vertical surface 313, and when the opening is fully closed, the upper half part of the third frame 92 is recessed. A gap is formed by the third frame 92 and the recessed portion, and the airtight member S7 is positioned between the upper surface 25 of the first door body 2 on the door trailing side and the vertical surface 313 of the second door body 3. , the gap between the top surface 25 of the first door body 2 on the trailing edge side and the bottom surface 371 of the second door body 3 on the trailing edge side is closed. The third frame 92 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

As shown in FIG. 3, the fourth frame 93 is provided so as to protrude upward from the door tip side upper surface 380 along the door tip side upper surface 380 of the lower portion 3B of the second door body 3. An airtight member S8 is provided in the groove of the frame 93. As shown in FIG. The second space side portion of the lower surface 27 of the door tip side of the first door body 2 is a recessed portion consisting of a horizontal surface 213 and a vertical surface 214, and when the opening is fully closed, the upper half portion of the fourth frame 93 is recessed. A gap is formed by the fourth frame 93 and the recessed portion, and the airtight member S8 is positioned between the upper surface 380 of the second door body 3 on the side of the door tip and the vertical surface 214 of the first door body 2. , the gap between the lower surface 27 of the first door member 2 and the upper surface 380 of the second door member 3 is closed on the second side. The fourth frame 93 is contained within the thickness of the second door body 3 and does not protrude from the second viewing surface 31. - 特許庁

The fifth frame 94 is provided along the lower intermediate projection surface 29 of the second door body 3 so as to protrude from the lower intermediate projection surface 29 toward the door bottom side. S9 is provided (see FIG. 7(A)). The fifth frame 94 is contained within the thickness of the second door body 3 and does not protrude from the second viewing surface 31 . When the opening is fully closed, a gap G is formed between the lower intermediate projection surface 29 of the first door member 2 and the lower intermediate projection surface 382 of the second door member 3, and the fifth frame 94 is positioned in the clearance G. The airtight member S9 is in close contact with the lower intermediate projection surface 382 of the second door body 3, thereby blocking the second side portion of the gap G. As shown in FIG. The first viewing surface 20 of the first door member 2 is a projecting piece 200 that protrudes beyond the lower intermediate viewing surface 29. When the opening is fully closed, the tip of the projecting piece 200 extends toward the second door member 3. is adjacent to the lower intermediate viewing surface 382 of the . In this embodiment, the rotation angle regulating member 8 and the reinforcing member are provided in the gap G, and when the opening is fully closed, the second portion 81 of the rotation angle regulating member 8 and the second portion of the reinforcing member are arranged. 84 faces the viewing surface of the fifth frame 94 and the projecting piece 200 to form an interlocking structure.

As shown in FIG. 4, the sixth frame 95 is provided so as to protrude downward from the door trailing-side lower surface 28 along the door trailing-side lower surface 28 of the first door body 2 . is provided with an airtight member S10. The second space side part of the door tail side upper surface 381 of the second door body 3 is a recessed part consisting of a horizontal surface 314 and a vertical surface 315, and when the opening is fully closed, the lower half part of the sixth frame 95 is recessed. A gap is formed by the sixth frame 95 and the recessed portion, and the airtight member S10 is positioned between the bottom surface 28 of the first door body 2 and the vertical surface 315 of the second door body 3. , the second side part of the gap between the bottom surface 28 of the first door body 2 and the top surface 381 of the third door body 3 on the door bottom side is closed. The sixth frame 95 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

As shown in FIG. 6, the second viewing surface 21 of the first door member 2 is a projecting piece 210 projecting toward the door trailing end beyond the door trailing end face 23, and the seventh frame 96 is a protrusion. It is located on the base end side of the piece 210 and on the trailing edge side of the trailing edge side end surface 23 and is provided so as to extend along the trailing edge side end surface 23 . There is. The second space side portion of the door tip side end surface 39 of the door tail side portion 3C of the second door body 3 is a recessed portion consisting of a projection surface 310 and a viewing surface 311, and when the opening is fully closed, the seventh The trailing edge side half portion of the frame 96 is positioned in the recessed portion, and the airtight member S11 is in close contact with the trailing edge side end face 23 of the first door body 2 and the facing surface 311 of the second door body 3, thereby The second side part of the gap between the trailing edge side end face 23 of the first door body 2 and the leading edge side edge face 39 of the door trailing side part 3C of the second door body 3 is closed. The seventh frame 96 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21.例文帳に追加

When the opening is fully closed, the tip of the protruding piece 210 extends to face the viewing surface 311 of the recess and approaches the viewing surface 310 of the recess. The first viewing surface 30 of the second door body 3 is a protruding piece 300 projecting toward the door tip side beyond the door trailing edge side end face 39 of the door trailing side portion 3C. A portion of the end face 23 on the first space side is a recessed portion composed of a viewing surface 201 and a viewing surface 202, and when the opening is fully closed, the tip of the projecting piece 300 faces the viewing surface 202 of the recessed portion. so as to be adjacent to the viewing surface 201 of the recess. When the opening is fully closed, in the gap formed between the end face 23 of the first door body 2 and the end face 39 of the second door body 3, the second door body is provided at the first side portion. 3 and the recessed surface 202 of the first door body 2 to form an interlocking portion. A recessed portion is formed from the facing surface 311 of the recessed portion.

[C] Configuration of Door of Door Device (Second Embodiment of Door Shape)
A second embodiment of the shapes of the first door member 2 and the second door member 3 will be described with reference to FIGS. 9 to 17. FIG. 5 and 6, reference numerals 22, 23, 26, 34, 39, 372, 91, 96, S6 and S11 are replaced by 22', 23', 26', 34', 39' and 32', respectively. , 91′, 96′, S6′, and S11′ can be used to explain the door shape according to the second embodiment. The first door body 2 has a first viewing surface 20 facing the first space, a second viewing surface 21 facing the second space, a vertically extending door tip side end surface 22', and a vertically extending door opening. A trailing end surface 23', a horizontally extending top surface 24', a horizontally extending top surface 25', and a door bottom side end portion of the top surface 24' and the top surface 25'. An upper intermediate projection surface 26' extending vertically between the tip side end portion, a door leading side lower surface 27' extending horizontally, a door bottom side lower surface 28' extending horizontally, and the door bottom of the door leading side lower surface 27'. and a lower intermediate projection surface 29' extending vertically between the side edges and the leading edge of the trailing lower surface 28'. The height dimension of the door tip side end surface 22' is larger than the height dimension of the door trailing edge side end face 23', and the door tip side upper surface 24' is positioned above the door trailing edge side upper surface 25'. The front side lower surface 27' is located below the door bottom side lower surface 28'. The first door body 2 has a stepped upper surface (door tip side upper surface 24' and door bottom side upper surface 25') and a stepped lower surface (door tip side lower surface 27' and door trailing side lower surface 28'). , has a so-called sideways convex shape in a front view.

The second door body 3 has a first viewing surface 30 facing the first space, a second viewing surface 31 facing the second space, and a vertically extending upper door end side viewing surface 32'. It is provided with an extending lower door tip side projection surface 33', a vertically extending door bottom side end surface 34', a horizontally extending upper end surface 35', and a horizontally extending lower end surface 36'. As shown in FIG. 9, the second door body 3 has a U-shape in front view from an upper portion 3A', a lower portion 3B', and a door tail side portion 3C'. A laterally convex opening surrounded by the upper portion 3A', the lower portion 3B', and the rear side portion 3C' of the second door body 3 in the closed posture is formed. It has substantially the same shape as the first door body 2 , and the dimension of the opening is slightly larger than the dimension of the first door body 2 .

The upper tip side projection surface 32' of the second door body 3 is the door tip side end face of the upper part 3A', the upper end face 35' of the second door body 3 is the upper surface of the upper part 3A', and the upper part 3A' is horizontal. It has a lower surface 37' that extends to. The lower end surface 33' of the second door body 3 is the end surface of the lower part 3B', and the lower end surface 36' of the second door body 3 is the lower surface of the lower part 3B'. ' has a horizontally extending upper surface 38'. The trailing edge side end surface 34' of the second door member 3 is the trailing edge side edge surface of the trailing edge side portion 3C', and the trailing edge side portion 3C' has a door leading edge side end surface 39' extending in the vertical direction.

The trailing edge side portion of the second door body 3 (door trailing end surface 34' in this embodiment) is rotated by the hinge 14 to the door trailing side portion of the door frame 1 (door trailing side vertical frame 11 in this embodiment). mounted movably. The second door body 3 is biased toward the door frame 1 in the closing direction by a door closer 15 provided between the upper end portion of the door tail side portion 3C' and the door tail side portion of the upper frame 12 of the door frame 1. there is In the illustrated embodiment, the door tail side portion of the second door body 3 is attached to the door tail side vertical frame 11. For example, the second door body 3 is attached to the upper frame 12 and the lower frame 13 using hinge closers. It may be rotatably attached to the door bottom side portion of the door.

The first door body 2 is rotatably attached to the second door body 3 so that the opening of the second door body 3 can be opened and closed. By taking the posture, the first door body 2 and the second door body 3 are integrated to form one door (rectangular shape in front view). When the first door body 2 is in the closing posture with respect to the second door body 3, the end face 22' of the first door body 2 and the end face 34' of the second door body 3 are positioned at the end of the door. The top surface 24' of the first door body 2 and the top surface 35' of the second door body 3 are the top surface of the door, and the top surface of the first door body 2. The side lower surface 27' and the lower end surface 36' of the second door body 3 are the lower end surface of the door. In this embodiment, the door thicknesses (estimated dimensions) of the first door body 2 and the second door body 3 are the same, but the door thicknesses may be different.

When the first door body 2 is in the closing position with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the projection surface (upper intermediate projection surface 26', lower intermediate projection surface 29', door tail side upper surface) 25', trailing edge side lower surface 28', trailing edge side end surface 23') and the peripheral surface of the second door body 3, that is, projection surface (upper door tip side projection surface 32', lower door tip side projection surface 33', upper portion The lower surface 37' of 3A', the upper surface 38' of the lower portion 3B', and the front end surface 39' of the rear portion 3C' are closely opposed to each other with a gap therebetween.

A handle H is provided at an intermediate position in the height direction on the door tip side portions of the first viewing surface 20 and the second viewing surface 21 of the first door body 2 . A latch L1 is built in the door tip side portion of the first door body 2, and the latch is positioned between a locking posture protruding from the door tip side end face 22 and a retracted posture retracted into the door tip side end face 22. It is movable. The latch L1 is biased so as to maintain the locking posture, and when the first door body 2 is in the closed posture, the latch receiver formed on the projection surface 100 of the door leading side vertical frame 10 of the door frame 1 (Fig. 16, 17), the closed position of the first door 2 is maintained. By operating the handle H, the latch L1 in the locking posture is brought into the retracted posture, so that the locked state of the door edge side of the first door body 2 is released, and the first door body 2 can be opened. When the first door body 2 and the second door body 3 are connected and integrated, the handle H is operated to release the locked state of the latch L1, and the door (the first door body 2 + the second door body 3) can be opened.

The first door member 2 is attached to the lower surface 37' of the upper portion 3A' and the upper surface 38' of the lower portion 3B' of the second door member 3 by hinge closers on the upper surface 25' on the door trailing side and the lower surface 28' on the door trailing side. It is mounted so as to be rotatable. The first door 2 is urged in a direction (closing direction) to maintain the closed posture with respect to the second door 3 .

As shown in FIG. 10, in this embodiment, the rotation axis P of the first door body 2 is located on the first space side ( (first viewing surface 20, first viewing surface 30 side). By biasing the rotation axis P of the first door body 2 toward the first space, when the opening is fully closed, the tip of the projecting piece 200 of the first viewing surface 20 of the first door body 2 can be moved toward the second door. It is possible to avoid contact with the upper end-side projection surface 32' and the lower door end-side projection surface 33' of the body 3, so that the upper intermediate projection surface 26' of the first door body 2 and the second door body 3 on the first space side of the gap G between the upper end-side projection surface 32' and the lower middle projection surface 29' of the first door body 2 and the lower door end-side projection surface 33' of the second door body 3 The first space side of the gap G can be made as narrow as possible. By doing so, the design (the appearance of the first viewing surface 20 of the first door 2 and the first viewing surface 30 of the second door 3 is more unified) and the airtightness are improved. In the present invention, the position of the rotation axis P within the thickness of the door is not limited to the illustrated embodiment, and the rotation axis P of the first door body 2 is It is not limited to being positioned within the thickness of the first door body 2 .

In this embodiment, the rotation axis P is positioned substantially at the center of the width of the first door body 2 . In this embodiment, the width dimension of the top surface 24' on the door tip side of the first door body 2 is smaller than the width dimension of the top surface 25' on the door bottom side, and the width dimension of the bottom surface 27' on the door bottom side is smaller than the width dimension on the bottom surface 28' on the door bottom side. less than the width dimension of In the first door body 2, an upper hinge portion P1 and a lower hinge portion P2 form the door tip side portion of the door trailing side upper surface 25' and the door trailing side portion of the door trailing side lower surface 28' to the second door body. 3 are rotatably attached to the front end side portion of the lower surface 37' of the upper portion 3A' of No. 3 and the front end portion of the upper surface 38' of the lower portion 3B'. The rotation axis P of the first door body 2 is defined by the gap between the upper intermediate projection surface 26' of the first door body 2 and the upper door tip side projection surface 32' of the second door body 3, It is positioned in the vicinity of the gap between the lower intermediate projection surface 29 ′ and the lower door tip side projection surface 33 ′ of the second door body 3 . In this embodiment, the rotation axis P is positioned at the center of the width of the first door body 2, but the position of the rotation axis P is different from the center of the width direction of the first door body 2. It may be biased toward the door leading edge side or the door trailing edge side.

The first door 2 is urged in a direction (closing direction) to maintain the closed posture with respect to the second door 3 . In this embodiment, the hinge closer is a hinge closer having a spring that biases the first door 2 in the closing direction, and also functions as means for closing the first door 2 . More specifically, at least one of the upper and lower hinge portions (the lower hinge portion P2 in the illustrated embodiment) has a built-in spring that constitutes means for closing the first door 2. The first door body 2 is biased in the closing direction. In this embodiment, the closing force of the first door member 2 (hinge closer) is set to be greater than the closing force of the second door member 3 (door closer 15), but the present invention is not limited to this. In this embodiment, the closing means for the first door 2 is built in the hinge closer, but the closing means may be provided independently of the rotating portion (hinge) of the first door 2 .

The airtight structure of the door device according to this embodiment will be described. The door frame 1 is provided with a door stopper with which the peripheral portions of the doors (the first door body 2 and the second door body 3) in the closed position (the door tip side portion, the door bottom side portion, and the upper side portion) come into contact. ing. More specifically, as shown in FIG. 16, in the door tip side vertical frame 10, the door tip side end face of the door in the closing posture (that is, the door tip side end face 22' of the first door body 2) is closely opposed. On the second space side of the projection surface 100, a groove portion opening toward the first space is formed over the opening height direction, and a door end side airtight member (airtight rubber) S1' is provided in the groove portion. be. In the trailing edge side vertical frame 11, a groove opening toward the first space is formed on the second space side of the prospective surface 110 where the door trailing edge side end surface 34' of the second door body 3 in the closed posture faces closely. It is formed in the high direction, and the groove portion is provided with a door tail side airtight member (airtight rubber) S2'. As shown in FIGS. 11 and 12, in the upper frame 12, the top surface 24' of the first door body 2 in the closed posture and the top end surface 35' of the second door body 3 face each other closely on the lower surface 120. On the side of the second space, a groove opening toward the first space is formed across the opening width direction, and an upper airtight member (airtight rubber) S3' is provided in the groove.

When the opening is fully closed, the peripheries of the three sides of the door (the door tip side, the door bottom side, and the upper side), specifically, the second face 21 of the first door body 2 and the second face of the second door body The door tip side portion of the attachment surface 31, the door bottom side portion of the second facing surface 31 of the second door body 3, and the upper side portion of the second door body 3 are made of the door tip side airtight rubber S1' and the door bottom side airtight rubber. S2' is in close contact with the upper airtight rubber S3'.

The lower part of the first door body 2 and the lower part of the second door body 3 project downward beyond the lower surface 27' of the first door body 2 and the lower end surface 36' of the second door body 3. An airtight member S4' is provided, and when the opening is fully closed, the airtight member S4' is in close contact with the upper surface 130 of the lower frame 13 (see FIGS. 11 and 12). Therefore, when the opening is fully closed, an airtight structure is continuously formed around the opening.

In the fully closed position of the opening, the door according to the present embodiment has the peripheral surface of the first door body 2, that is, the projected surface (top surface 25' on the trailing edge side, upper intermediate projected surface 26', lower intermediate surface 28' on the door trailing side, lower intermediate surface). projected surface 29', door bottom side end surface 23') and the peripheral surface of the second door body 3, i.e., projected surface (lower surface 37', upper door end side projected surface 32', upper surface 38', lower door end side projected surface 33' , door tip side end surface 39'), peripheral frames (first frame 91', second frame 92', third frame 94', fourth frame 95', fifth frame 96') provided (see FIG. 14). All the peripheral frames according to this embodiment are provided on the first door body 2 .

The first frame 91', the second frame 92', the third frame 94', the fourth frame 95', and the fifth frame 96' are provided with airtight members S6', S7', S9', S10', and S11', respectively. The airtight members S6', S7', S9', S10', and S11' continuously close the gaps. The first frame 91', the second frame 92', the third frame 94', the fourth frame 95', the fifth frame 96', and the airtight members S6', S7', S9', S10', S11' It corresponds to the second frame 91, the third frame 92, the fifth frame 94, the sixth frame 95, the seventh frame 96, and the airtight members S6, S7, S9, S10, and S11 according to the first embodiment.

The first frame 91' is provided along the upper intermediate projection surface 26' of the first door body 2 so as to protrude from the upper intermediate projection surface 26' to the door bottom side, and is fitted into the groove of the first frame 91'. is provided with an airtight member S6'. When the opening is fully closed, a gap G is formed between the upper intermediate projected surface 26' of the first door member 2 and the upper door tip side projected surface 32' of the second door member 3, and the first frame 91 ' is positioned in the gap G, and the airtight member S6' closes the second side portion of the gap G by being in close contact with the upper end-side prospective surface 32' of the second door member 3. As shown in FIG. The first viewing surface 20 of the first door member 2 is a projecting piece 200 that protrudes beyond the upper intermediate viewing surface 26'. 3 close to the upper door tip side prospective surface 32'. In this embodiment, the rotation angle regulating member 8 and the reinforcing member are provided in the gap G, and when the opening is fully closed, the second portion 81 of the rotation angle regulating member 8 and the second portion of the reinforcing member are arranged. 84 faces the viewing surface of the first frame 91' and the protruding piece 200 to form an interlocking structure. The first frame 91 ′ is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

As shown in FIG. 12, the second frame 92' is provided along the door bottom side upper surface 25' of the first door body 2 so as to protrude upward from the door bottom side upper surface 25'. ' is provided with an airtight member S7'. The second space side portion of the lower surface 37' of the upper portion 3A' of the second door 3 is a recessed portion consisting of a horizontal surface 312 and a vertical surface 313, and when the opening is fully closed, the upper portion of the second frame 92' The half portion is located in the recessed portion, and a gap is formed from the second frame 92' and the recessed portion. By closely contacting the vertical surface 313 of the door body 3, the second side part of the gap between the top surface 25' of the door bottom side of the first door body 2 and the bottom surface 37' of the second door body 3 is closed. . The second frame 92 ′ is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

As shown in FIGS. 13A and 14, the third frame 94' protrudes from the lower intermediate projection surface 29' along the lower intermediate projection surface 29' of the second door body 3 toward the door bottom side. An airtight member S9' is provided in the groove of the third frame 94'. The third frame 94' is contained within the thickness of the second door body 3 and does not protrude from the second viewing surface 31. - 特許庁When the opening is fully closed, a gap G is formed between the lower middle projected surface 29' of the first door member 2 and the lower front end surface projected surface 33' of the second door member 3, and the third frame 94 ' is positioned in the gap G, and the airtight member S9' closes the second side portion of the gap G by closely contacting the lower door end side prospective surface 33' of the second door member 3. As shown in FIG. The first viewing surface 20 of the first door member 2 is a projecting piece 200 that protrudes beyond the lower intermediate viewing surface 29'. 3 close to the lower door tip side prospective surface 33'. In this embodiment, the rotation angle regulating member 8 and the reinforcing member are provided in the gap G, and when the opening is fully closed, the second portion 81 of the rotation angle regulating member 8 and the second portion of the reinforcing member are arranged. 84 faces the viewing surface of the third frame 94' and the projecting piece 200, thereby forming an interlocking structure.

As shown in FIG. 12, the fourth frame 95' is provided so as to protrude downward from the bottom surface 28' of the door bottom side of the first door body 2 along the bottom surface 28' of the door bottom side. ' is provided with an airtight member S10'. The second space side portion of the upper surface 38' of the lower portion 3B' of the second door 3 is a concave portion consisting of a horizontal surface 314 and a vertical surface 315, and when the opening is fully closed, the fourth frame 95' The lower half portion is located in the recessed portion, and a gap portion is formed from the fourth frame 95' and the recessed portion. By being in close contact with the vertical surface 315 of the second door member 3, the second side portion of the gap between the bottom surface 28' of the first door member 2 and the upper surface 38' of the third door member 3 is closed. there is The fourth frame 95' is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21. - 特許庁

The second facing surface 21 of the first door body 2 is a projecting piece 210 projecting toward the door trailing end beyond the door trailing end face 23', and the fifth frame 96' is the proximal end of the projecting piece 210. An airtight member S11' is provided in the concave groove of the fifth frame 96'. be. The second space side portion of the door tip side end surface 39' of the door tail side portion 3C' of the second door body 3 is a recessed portion composed of a projection surface 310 and a viewing surface 311, and when the opening is fully closed, The trailing edge side half portion of the fifth frame 96' is located in the recess, and the airtight member S11' is in close contact with the door trailing end surface 23' of the first door member 2 and the viewing surface 311 of the second door member 3. As a result, the second side portion of the gap between the trailing edge side end surface 23' of the first door member 2 and the trailing edge side end surface 39' of the trailing edge side portion 3C' of the second door member 3 is closed. there is The fifth frame 96' is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21. - 特許庁

When the opening is fully closed, the tip of the protruding piece 210 extends to face the viewing surface 311 of the recess and approaches the viewing surface 310 of the recess. The first viewing surface 30 of the second door body 3 is a protruding piece 210 projecting toward the door tip side beyond the door tip side end face 39' of the door tail side portion 3C'. The first space side part of the door tail side end surface 23' is a recessed portion composed of a viewing surface 201 and a viewing surface 202, and when the opening is fully closed, the tip of the projecting piece 300 becomes the viewing surface of the recessed portion. 202 so as to be adjacent to the viewing surface 201 of the recess. When the opening is fully closed, the gap formed between the trailing edge side end surface 23' of the first door body 2 and the leading edge side end surface 39' of the trailing edge side portion 3C' of the second door body 3 has a first opening. At the side portion, a gap is formed from the projecting piece 300 of the second door body 3 and the facing surface 202 of the recessed portion of the first door body 2, and the second side portion is formed from the first door body 2. A recessed portion is formed from the projecting piece 210 and the facing surface 311 of the recessed portion of the second door member 3 .

The shapes of the first door body 2 and the second door body 3 constituting the door according to this embodiment are based on the first door body 2 and the second door body 3 shown in FIGS. The first door body 2 can be engaged with and disengaged from the door tip side vertical frame 10 of the door frame 1 on the door tip side, and the door trailing edge side of the second door body 3 can be rotated to the door trailing edge side portion of the door frame. The first door body 2 is rotatably mounted to the second door body 3, and when the opening is fully closed, the projection surface of the first door body 2 and the second door body 3 A gap is formed between the projected surfaces of the first door member 2 and the second door member 3 as long as the rotation angle regulating means can be provided in the gap. is not limited to

[D] Coupling device The door device has a coupling device for coupling the first door 2 and the second door 3 in the closed position. As described above, the first door 2 is urged to maintain the closed position relative to the second door 3. The closing attitude of the first door body 2 is fixed, and the rotation of the first door body 2 with respect to the second door body 3 is restricted. Normally, the coupling device is in a locked state, the first door body 2 is fixed to the second door body 3 in a closed position, and the first door body 2 and the second door body 3 are integrated as one door. Rotate.

The coupling device is configured to release the locked state based on a signal generated in an emergency such as a fire. 2 is released), the rotation of the first door member 2 with respect to the second door member 3 becomes possible. When the locking state of the coupling device is released, only the first door body 2 can be rotated at the initial movement of the door from the fully closed position of the opening.

The coupling device consists of a first member provided on the first door 2 and a second member provided on the second door 3, and the coupling device is locked by fixing the first member and the second member. . The first member and the second member are provided at predetermined portions of the first door member 2 and the second door member 3, respectively, so as to face each other when the first door member is in the closed position with respect to the second door member 3. be done.

In the door shown in FIGS. 1 and 2, when the first door body 2 is in the closing posture with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the prospective surface (the upper surface 24 on the front side, the bottom of the door) side upper surface 25, upper intermediate projected surface 26, leading edge side lower surface 27, door tail side lower surface 28, lower intermediate projected surface 29, door trailing side end surface 23) and the peripheral surface of the opening of the second door body 3, that is, the second Projection surfaces of the door 3 (door tip side lower surface 370, door trailing edge side lower surface 371, upper intermediate projection surface 372, door tip side upper surface 380, door trailing edge side upper surface 381, lower intermediate projection surface 382, door trailing side portion 3C door The front side end faces 39) are closely opposed to each other, and the first member and the second member are provided at or in the vicinity of the closely opposed portions, respectively.

In one aspect, at least one first member is formed on the prospective surface of the first door 2 (door tip side upper surface 24, door bottom side upper surface 25, upper middle prospective surface 26, door tip side lower surface 27, door trailing side lower surface 28, the lower intermediate projection surface 29, the door bottom side end surface 23), and at least one second member is provided at a predetermined position on the projection surface of the second door 3 (the door bottom side bottom surface 370, Predetermined positions of at least one of the trailing edge side lower surface 371, the upper intermediate projected surface 372, the door tip side upper surface 380, the door trailing side upper surface 381, the lower intermediate projected surface 382, and the door tip side end surface 39 of the door trailing portion 3C). , and the first member and the second member are positioned so as to face each other when the first door member 2 is in the closed position with respect to the second door member 3 .

In the door shown in FIGS. 9 and 10, when the first door body 2 is in the closing posture with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the projection surface (upper intermediate projection surface 26', lower intermediate projected surface 29', trailing edge side upper surface 25', trailing edge side lower surface 28', trailing edge side end surface 23') and the peripheral surface of the second door body 3, that is, projected surface (upper door tip side projected surface 32', lower The front end surface 33', the lower surface 37' of the upper portion 3A', the upper surface 38' of the lower portion 3B', and the front end surface 39' of the rear portion 3C') are closely opposed to each other. A first member and a second member are provided at or near such a portion, respectively.

In one aspect, at least one first member is the projection surface of the first door 2 (upper intermediate projection surface 26', lower intermediate projection surface 29', door bottom side upper surface 25', door bottom side lower surface 28', At least one second member is provided at a predetermined position on at least one surface of the door tail side end surface 23 ′), and at least one second member is provided on the prospect surface (upper door tip side prospect surface 32 ′, lower door tip side) of the second door body 3 provided at a predetermined position on at least one of the projection surface 33', the lower surface 37' of the upper portion 3A', the upper surface 38' of the lower portion 3B', and the end surface 39' of the trailing edge side portion 3C'), The first member and the second member are in a positional relationship such that they face each other when the first door member 2 is in the closed position with respect to the second door member 3 .

In this embodiment, the coupling device is composed of an electric lock, and the combination of the first member and the second member is, for example, a combination of an electric strike and a latch lock, a combination of a motor lock and a strike, a combination of an electromagnet and a magnetic body. is selected from Embodiments of the coupling device will be described below.

As shown in FIGS. 6, 16 and 17, the connecting device comprises a latch lock 4 provided on the first door 2 and an electric strike 5 provided on the second door 3. As shown in FIGS. A latch lock 4 is built in at a predetermined height in the door bottom side portion of the first door body 2, and the latch L2 of the latch lock 4 is urged to protrude from the door bottom side end surfaces 23, 23'. It is In this embodiment, the latch lock 4 does not have a cylinder, thumb-turn or handle.

An electric strike 5 is provided at a predetermined height on the end surfaces 39, 39' of the trailing edge side portions 3C, 3C' of the second door body 3. The electric strike 5 is provided with the second door body. One end of the electric wire 6 extending inside the door frame 1 is connected to one end of the electric wire 6, and the other end of the electric wire 6 is connected to the electric fitting 7 provided at the door trailing side portion of the second door body 3 and the door trailing side vertical frame 11 of the door frame 1. It extends to the frame through the provided electric fitting 7' and is connected to a power source (not shown). The coupling device consisting of the latch lock 4 and the electric strike 5 is electrically switched from a locked state to an unlocked state when a fire detection signal is input to the control unit. there is

In one aspect, the coupling device consisting of the latch lock 4 and the electric strike 5 operates as a power failure unlocking type (energized locking type). Normally, the electric strike 5 is in an energized state, the latch L2 of the latch lock 4 and the electric strike 5 are fixed and locked, and the closed position of the first door 2 with respect to the second door 3 is fixed. , the first door member 2 and the second door member 3 rotate integrally (see FIG. 16).

When the control unit receives a fire detection signal in an emergency, the electricity to the electric strike 5 is cut off (the power is turned off), the latch L2 of the latch lock 4 and the electric strike 5 are unlocked, and the second second The first door 2 can be rotated with respect to the door 3, and by rotating the first door 2 in the closed position, the first space and the second space are communicated with each other. The differential pressure in the second space is eliminated to enable smooth opening of the door (see FIG. 17).

In one aspect, the coupling device consisting of the latch lock 4 and the electric strike 5 operates as a lock-on-power-off type (unlock-on-power type). Normally, the electric strike 5 is in a non-energized state, the latch L2 of the latch lock 4 and the electric strike 5 are fixed and locked, and the closed position of the first door 2 with respect to the second door 3 is fixed. The first door member 2 and the second door member 3 rotate integrally (see FIG. 16).

When the control unit receives a fire detection signal in an emergency, the electric strike 5 is energized (the power is turned on), the latch L2 of the latch lock 4 and the electric strike 5 are unlocked, and the second door body is in the closing posture. The first door 2 can be rotated with respect to 3, and the rotation of the first door 2 in the closed position allows the first space and the second space to communicate with each other. The differential pressure in the space is eliminated to enable smooth opening of the door (see FIG. 17).

The coupling device may consist of a strike (not shown) provided on the first door 2 and a motor lock (not shown) provided on the second door 3 . The coupling device, which consists of a motor lock and a strike, is electrically switched from a locked state (locked state) to an unlocked state (unlocked state) when a fire detection signal is input to the control unit. The first door 2 can be rotated with respect to the second door 3 in the posture, and the rotation of the first door 2 in the closed posture communicates the first space and the second space. , to eliminate the differential pressure between the first space and the second space to enable smooth opening of the door. A coupling device consisting of a motor lock and a strike may operate as either a power failure unlocking type (energized locking type) or a power failure locking type (energized unlocking type).

The coupling device may consist of a strike plate (not shown) provided on the first door 2 and an electromagnetic lock (not shown) provided on the second door 3 . The coupling device, which consists of an electromagnetic lock and a strike plate, is electrically switched from a locked state (locked state) to an unlocked state (unlocked state) when a fire detection signal is input to the control unit. , the first door 2 can be rotated with respect to the second door 3 in the closed posture, and the rotation of the first door 2 in the closed posture communicates the first space and the second space. As a result, the differential pressure between the first space and the second space is eliminated, and the door can be smoothly opened.

The above-described coupling device is merely an example of a preferred embodiment of the differential pressure reducing means, and does not limit the scope of rights of the present invention. Alternatively, the latch connecting the first door 2 and the second door 3 can be manually released so that only the first door 2 can be opened.

[E] Rotational angle regulating means of the first door body The door device according to this embodiment restricts the rotation of the first door body 2 when only the first door body 2 is rotated by a predetermined angle from the fully closed position of the opening. A rotation angle restricting means for restricting is provided. The rotation angle regulating means includes a first element provided on one of the projected surface of the first door body 2 and the projected surface of the second door body 3, and a second element provided on the other projected surface. , when the opening is fully closed, the first element and the second element are positioned in the gap between the projection surfaces, and when only the first door body 2 is rotated by a predetermined angle from the fully closed posture of the opening, the first element is The one element and the second element abut against each other, and the rotation of the first door 2 with respect to the second door 3 is restricted. The rotation angle restricting means allows the first door body 2 in the closed posture to rotate to the extent that the pressure difference between the inside and the outside can be eliminated, while restricting excessive rotation that may affect operability. . For example, when the opening is fully closed, if the first door 2 rotates about 20 degrees with respect to the second door 3, the pressure difference between the inside and outside can be sufficiently eliminated. Of course, it is sufficient if the pressure difference between the inside and the outside can be eliminated by opening the first door 2 at a predetermined angle, and the angle is not limited to 20 degrees. In one aspect, the maximum rotation angle of the first door 2 with respect to the second door 3 is, for example, 20 degrees or less. The maximum rotation angle of the first door body 2 with respect to the second door body 3 may exceed 20 degrees. If only the first door body 2 is opened wide, there is a possibility that the person may be hit by the person on the open side. In this embodiment, by providing a rotation angle regulating means positioned in the gap between the facing projection surfaces of the first door body 2 and the second door body 3, when the opening is fully closed and the first door body 2 19 and 20, the rotation angle regulating means is not exposed to the outside and does not impair the appearance (see FIGS. 19 and 20).

In the door shown in FIGS. 1 and 2, when the first door body 2 is in the closing posture with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the prospective surface (the upper surface 24 on the front side, the bottom of the door) side upper surface 25, upper intermediate projected surface 26, leading edge side lower surface 27, door tail side lower surface 28, lower intermediate projected surface 29, door trailing side end surface 23) and the peripheral surface of the opening of the second door body 3, that is, the second Projection surfaces of the door 3 (door tip side lower surface 370, door trailing edge side lower surface 371, upper intermediate projection surface 372, door tip side upper surface 380, door trailing edge side upper surface 381, lower intermediate projection surface 382, door trailing side portion 3C door The front end faces 39) are closely opposed to each other with a gap therebetween, and the first element is provided on one side of the closely opposed portions, and the second element is provided on the other side.

In one aspect, at least one first element is the prospective surface of the first door body 2 (door tip side upper surface 24, door bottom side upper surface 25, upper middle prospective surface 26, door tip side lower surface 27, door trailing side lower surface 28, lower intermediate projection surface 29, door bottom side end surface 23), and at least one second element is provided at a predetermined position on the projection surface of the second door body 3 (door tip side lower surface 370, Predetermined positions of at least one of the trailing edge side lower surface 371, the upper intermediate projected surface 372, the door tip side upper surface 380, the door trailing side upper surface 381, the lower intermediate projected surface 382, and the door tip side end surface 39 of the door trailing portion 3C). The first element and the second element engage (contact) each other when the first door body 2 in the closed posture with respect to the second door body 3 is rotated by a predetermined angle from the closed posture. 1 It is configured to restrict the rotation of the door body 2 . In the case where the above-described coupling device is provided on the facing surfaces of the first door member 2 and the second door member 3, the rotation angle regulating means is arranged on a different projection surface from which the coupling device is provided. It is desirable to provide it on the surface.

In the door shown in FIGS. 9 and 10, when the first door body 2 is in the closing posture with respect to the second door body 3, the peripheral surface of the first door body 2, that is, the projection surface (upper intermediate projection surface 26', lower intermediate projected surface 29', trailing edge side upper surface 25', trailing edge side lower surface 28', trailing edge side end surface 23') and the peripheral surface of the second door body 3, that is, projected surface (upper door tip side projected surface 32', lower A door tip side projection surface 33', a lower surface 37' of the upper portion 3A', an upper surface 38' of the lower portion 3B', and a door tip side end surface 39' of the door tail side portion 3C') are closely opposed to each other with a gap. A first element is provided on one of the closely opposed parts, and a second element is provided on the other.

In one aspect, at least one first element is the projection surface of the first door 2 (upper intermediate projection surface 26', lower intermediate projection surface 29', door bottom side upper surface 25', door bottom side lower surface 28', At least one second element is provided at a predetermined position on at least one surface of the trailing edge side end surface 23'), and at least one second element is provided on the projection surface (upper edge side projection surface 32', lower door edge side) of the second door body 3. provided at a predetermined position on at least one of the projection surface 33', the lower surface 37' of the upper portion 3A', the upper surface 38' of the lower portion 3B', and the end surface 39' of the trailing edge side portion 3C'), The first element and the second element engage (contact) the first door body 2 when the first door body 2 in the closing posture with respect to the second door body 3 is rotated by a predetermined angle from the closing posture. is configured to restrict the rotation of the In the case where the above-described coupling device is provided on the facing surfaces of the first door member 2 and the second door member 3, the rotation angle regulating means is arranged on a different projection surface from which the coupling device is provided. It is desirable to provide it on the surface.

The rotation angle regulating means according to this embodiment is provided between the upper intermediate projection surfaces 26 and 26' of the first door member 2 and the upper intermediate projection surface 372 and the upper door end side projection surface 32' of the second door member 3. Between the upper rotation angle regulating means located in the gap, the lower intermediate projection surfaces 29, 29' of the first door body 2, the lower intermediate projection surface 382 of the second door body 3, and the lower door tip side projection surface 33' and a lower rotation angle regulating means located in the gap between the two.

The upper rotation angle restricting means includes a receiving portion or an opening 260 provided in the upper intermediate projection surfaces 26, 26' of the first door body 2, an upper intermediate projection surface 372 of the second door body 3, and an upper door tip side projection. and a rotation angle regulating member 8 provided on the surface 32'. The lower rotation angle regulating means includes a receiving portion, that is, an opening 290 provided in the lower intermediate projection surfaces 29 and 29' of the first door body 2, a lower intermediate projection surface 382 of the second door body 3, and a lower door tip side. and a rotation angle regulating member 8 provided on the projection surface 33'.

As shown in FIG. 8, the rotation angle regulating member 8 is an elongated member having an L-shaped cross section composed of a first portion 80 extending in the viewing direction and a second portion 81 extending in the viewing direction. A cushioning material (resin tape or the like) 82 is provided on the inner surface of the second portion 81 . In the first portion 80 , the rotation angle regulating member 8 is mounted on the side spaced apart from the second portion 81 on the upper intermediate projection surface 372 of the second door body 3 and the upper door tip side projection surface 32 ′ of the second door body 3 . An insertion hole (countersunk hole) 800 for a screw 85 to be fixed to the lower intermediate projection surface 382 and the lower door end projection surface 33' is formed. As shown in FIGS. 7(B) and 13(B), the rotation angle regulating member 8 has upper intermediate projection surfaces 26 and 26' of the first door body 2 and an upper intermediate projection surface 372 of the second door body 3. , the height dimension of the upper door end side projection surface 32', the lower intermediate projection surfaces 29, 29' of the first door body 2, the lower intermediate projection surface 382 of the second door body 3, and the lower door end side projection surface 33' also has a slightly lower height dimension.

The first portion 80 of the rotation angle regulating member 8 is fixed to the upper intermediate projected surface 372, the upper door end side projected surface 32', the lower intermediate projected surface 382, and the lower door end projected surface 33' of the second door body 3. The second portion 81 forms projections rising from the upper middle projected surface 372, the upper door end side projected surface 32', the lower intermediate projected surface 382, and the lower door end projected surface 33' of the second door 3. , a cushioning material 82 is positioned on the inner surface of the second portion 81 .

The width dimension of the first portion 80 of the rotation angle regulating member 8 is the upper intermediate projection surface 372 of the second door body 3, the upper door tip side projection surface 32', the lower intermediate projection surface 382, and the lower door tip side projection surface 33. ', and the tip of the first portion 80 is brought close to the second viewing surface 31 of the second door body 3 and screwed with the screw 85 to the upper intermediate viewing surface 372 of the second door body 3, the upper door end side. In a state of being fixed to the projection surface 32', the lower middle projection surface 382, and the lower door end side projection surface 33', the second portion 81 has the upper intermediate projection surface 372, the upper door end side projection surface 32', and the lower intermediate projection surface. The surface 382 rises from a position closer to the first viewing surface 30 than the center of the lower door end side viewing surface 33' in the viewing direction and extends in the viewing direction.

When the opening is fully closed, the upper intermediate projected surfaces 26, 26' of the first door member 2 and the upper intermediate projected surface 372 and the upper door end side projected surface 32' of the second door member 3 face each other with a gap G therebetween. The opening 260 of the first door member 2 faces the gap G, the rotation angle regulating member 8 of the second door member 3 is positioned in the gap G, and the second portion 81 is positioned inside the opening 260. , and when the first door body 2 is rotated by a predetermined angle from the closed posture, the second portion 81 moves to the second position of the opening 260 and contacts the portion of the opening 260. Thus, the rotation of the first door 2 with respect to the second door 3 is restricted.

Aperture 260 is rectangular in shape and has a first longitudinal edge 261 and a second longitudinal edge 262 . When the second portion 81 is in the first position, it is adjacent to or abuts the first longitudinal edge 261 of the opening 260, and when the second portion 81 is rotated to the second position, the second longitudinal edge 261 of the opening 260 is positioned. It abuts edge 262 . That is, in this embodiment, when the first door member 2 is rotated by a predetermined angle with respect to the second door member 3, the second portion 81 of the rotation angle regulating member 8 contacts the second vertical edge 262 of the opening 260. Further rotation of the first door body 2 is regulated by the contact. The maximum rotation angle of the first door 2 can be set by the distance between the second portion 81 at the first position and the second vertical edge 262 .

When the opening is fully closed, the lower intermediate projection surfaces 29, 29' of the first door member 2, the lower intermediate projection surface 382 of the second door member 3, and the lower door end projection surface 33' face each other with a gap G therebetween. The opening 290 of the first door body 2 faces the gap G, the rotation angle regulating member 8 of the second door body 3 is positioned in the gap G, and the second portion 81 is positioned inside the opening 290. , and when the first door body 2 is rotated by a predetermined angle from the closed posture, the second portion 81 moves to the second position of the opening 290 and contacts the portion of the opening 290. Thus, the rotation of the first door 2 with respect to the second door 3 is restricted.

Aperture 290 is rectangular in shape and has a first longitudinal edge 291 and a second longitudinal edge 292 . When the second portion 81 is in the first position, it is adjacent to or abuts the first longitudinal edge 291 of the opening 290, and when the second portion 81 is rotated to the second position, the second longitudinal edge 291 of the opening 290 is positioned. It abuts edge 292 . That is, in this embodiment, when the first door member 2 is rotated by a predetermined angle with respect to the second door member 3, the second portion 81 of the rotation angle regulating member 8 contacts the second vertical edge 292 of the opening 290. Further rotation of the first door body 2 is regulated by the contact. The maximum rotation angle of the first door 2 can be set by the distance between the second portion 81 at the first position and the second vertical edge 292 .

In this embodiment, as shown in FIGS. 5, 15, 17, and 19, the rotation angle regulating member 8 is provided near the rotation axis P of the first door member 2. As shown in FIG. By shortening the distance between the second portion 81 of the rotation angle regulating member 8 and the rotation axis P of the first door body 2 , the second portion 81 of the rotation angle regulating member 8 is aligned with the second openings 260 and 290 of the openings 260 and 290 . When the vertical edges 262 and 292 are brought into contact with each other, the force acting on the second portion 81 is reduced, and the load on the rotation angle regulating member 8 is reduced.

On the upper intermediate projection surface 372, the upper door tip side projection surface 32', the lower intermediate projection surface 382, and the lower door tip side projection surface 33' of the second door body 3, a projection is provided at a portion spaced from the second side portion. A reinforcing member having an L-shaped cross-section is fixed to a first portion 83 extending in the direction and a second portion 84 extending in the viewing direction. Abutting portions rising from the upper door end side projection surface 32', the lower intermediate projection surface 382, and the lower door end side projection surface 33' are formed. The projecting dimension of the second portion 84 (abutting portion) is smaller than the gap G formed when the opening is fully closed (does not affect the operation of hanging the first door 2 with respect to the second door 3), The second portion 84 is positioned on the first side of the base end portion of the protrusion formed by the second portion 81 of the rotation angle regulating member 8 and abuts on the base end portion. The second portion 84 of the reinforcing member is oriented in the direction in which the second portion 81 of the rotation angle regulating member 8 abuts on the second longitudinal edges 262 and 292 of the openings 260 and 290 to deform. The second portion 81 is reinforced against force.

As shown in FIGS. 7(B) and 13(B), the reinforcing member has a height dimension slightly higher than the height dimension of the rotation angle regulating member 8, and is positioned above the first door body 2. Intermediate projected surfaces 26, 26' and upper intermediate projected surface 372 of second door body 3, upper door end side projected surface 32', lower intermediate projected surfaces 29, 29' of first door 2, and second door body 3 The lower intermediate projection surface 382 is a long member having substantially the same height dimension as the lower door end projection surface 33'. In this embodiment, the rotation angle regulating member 8 and the reinforcing member are provided in the gap G, and when the opening is fully closed, the second portion 81 of the rotation angle regulating member 8 and the second portion of the reinforcing member are arranged. A labyrinth structure is formed by 84 facing the viewing surface of the fifth frame 94 and the projecting piece 200, which functions as a resistance against the flow of flames and smoke in the event of a fire.

The attachment of the rotation angle regulating member 8 will be described with reference to FIGS. 14 and 15. FIG. 14 and 15 show the first door body 2 and the second door body 3 in cross-sectional views as seen from B3 in FIG. The first door body 2 is hung from the second door body 3 fixed to the door tail side vertical frame 11 of the door frame 1 by the hinge 14 on the hanging side. This work is performed, for example, in a position in which the first door 2 is opened up to about 90 degrees with respect to the second door 3 in a closed position (upper diagram in FIG. 14). Suspension using a hinge closer consisting of upper and lower hinge portions P1 and P2 is well known to those skilled in the art, so detailed description thereof will be omitted. Consideration is given to the operation of hanging the first door 2 with respect to the second door 3 (the first door 2 is opened up to about 90 degrees with respect to the second door 3 in the closed position). Therefore, it should be noted that it is difficult to limit the rotation angle of the door body on the side of the door before hanging. Reinforcing members (consisting of a first portion 83 and a second portion 84) are fixed in advance to the upper door end side projection surface 32' and the lower door end side projection surface 33' of the second door body 3. As shown in FIG.

14, the first door body 2 is closed so that the lower intermediate projection surface 29' of the first door body 2 and the lower end-side projection surface 33' of the second door body 3 face each other. , while making the rotation angle of the first door member 2 relative to the second door member 3 relatively small, the lower intermediate projection surface 29' of the first door member 2 and the lower door end side projection surface 33' of the second door member 3 on the second space side, the third frame 94' and the airtight member S9' provided on the lower intermediate projection surface 29' of the first door body 2, and the lower door tip side projection surface 33' of the second door body 3 An insertion space for the rotation angle regulating member 8 is formed therebetween (lower diagram in FIG. 14).

From this insertion space, the rotation angle regulating member 8 having an L-shaped cross section is inserted between the lower intermediate projection surface 29' of the first door body 2 and the lower door tip side projection surface 33' of the second door body 3 ( FIG. 15 (upper view), by inserting the rotation angle regulating member 8 while rotating it further, the first portion 80 is brought into contact with the lower end-side projection surface 33' of the second door body 3, and the second portion 81 is moved. It is in a state where it is inserted into the opening 290 of the lower intermediate projection surface 29' of the first door member 2 (Fig. 15 center view). In this state, the rotation range (opening angle) of the first door 2 is restricted.

The insertion hole 800 formed in the first portion 80 of the rotation angle regulating member 8 in a state in which the first door 2 is rotated within a restricted rotation range (for example, the maximum rotation posture of the first door 2). And the second side portion of the lower end-of-door projection side projection surface 33' of the second door body 3 is closer than the third frame 94' provided on the lower intermediate projection surface 29' of the first door body 2 and the airtight member S9'. It is located on the 2 space side. Further, the first space side of the base end portion of the second portion 81 is in contact with the second portion (contact portion) 84 of the reinforcing member. The second portion 84 of the reinforcing member also functions as a positioning member when the rotation angle regulating member 8 is attached to the lower end-side projection surface 33 ′ of the second door member 3 .

By screwing the screw 85 into the insertion hole 800 of the first portion 80 of the rotation angle regulating member 8 , the first portion 80 of the rotation angle regulating member 8 is aligned with the lower end side projection surface 33 of the second door body 3 . ' is fixed to the second side portion (Fig. 15, center view). When the opening is fully closed, the airtight member S9' provided on the lower intermediate projection surface 29' of the first door body 2 contacts the second side portion of the lower door tip side projection surface 33' of the second door body 3. , the head of the screw 85 is hidden (lower view in FIG. 15, FIG. 19).

Here, it was explained that the rotation angle regulating member 8 was attached to the gap G between the lower intermediate projection surface 29' of the first door body 2 and the lower door tip side projection surface 33' of the second door body 3. describes the gap G between the upper intermediate projection surface 26 of the first door body 2 and the upper intermediate projection surface 372 of the second door body 3, the lower intermediate projection surface 29 of the first door body 2 and the lower part of the second door body 3 Used for mounting the rotation angle regulating member 8 to the gap G between the intermediate projection surface 382 and the gap G between the upper intermediate projection surface 26' of the first door body 2 and the upper door tip side projection surface 32' of the second door body 3. can do.

[F] Opening operation of the door device The rotation operation of the door device according to this embodiment will be described. FIG. 6 is a cross-sectional view of the door device in the closed position, in which both the first door 2 and the second door 3 are in the closed position (that is, the opening fully closed position). A latch L1 protruding from the end surface 22 of the door tip side of the first door body 2 is engaged with a latch receiver 1000 formed on the projection surface 100 of the door tip side vertical frame 10 of the door frame 1, and the connection is in a locked state. The closing position of the first door 2 and the second door 3 is fixed by the device.

Normally, there is substantially no air pressure difference between the first space and the second space. When the handle H of the first door body 2 is turned in the fully closed state of the opening, the protruding latch L1 is interlocked with the operation of the handle H and retracts into the end surface 22 on the door tip side, thereby opening the door of the first door body 2. The locked state of the door frame 1 on the front side end surface 22 with respect to the door front side vertical frame 10 is released, and the first door body 2 is opened to the first space side, whereby the first door body 2 and the second door body 3 are opened. are integrated and open to the first space side to open the opening (Fig. 16). Since the closing posture of the first door body 2 with respect to the second door body 3 is fixed by the connecting device, even if the first door body 2 is operated to open rapidly, The first door body 2 (which maintains the closing posture with respect to the second door body 3) and the second door body 3 rotate integrally, without the door body 2 turning so as to be unexpectedly bent. When the opened door is released, the door is closed integrally by the urging force of the door closer 15 and returns to the fully closed state of the opening. It is engaged with a latch receiver 1000 formed on the prospective surface 100 of the door leading edge side vertical frame 10 .

When a fire detection signal is input in the event of a fire, the smoke control means is activated, the pressure in the first space becomes higher than that in the second space, and a differential pressure is generated between the first space and the second space. Pressure is acting on the first viewing surface 20 of the first door body 2 and the first viewing surface 30 of the second door body 3 due to the differential pressure, and this pressure acts on the opening operation of the door (first space side). to open the building opening by rotating to).

When the fire detection signal is input, the connection device is de-energized or energized to electrically release the locking state of the connection device. By releasing the locked state of the coupling device, the fixed state of the first door body 2 with respect to the second door body 3 is released in the fully closed state of the opening, and only the first door body 2 can be opened. Become.

In this state, when the handle H of the first door body 2 is turned, the protruding latch L1 retreats into the door tip side end face 22 in conjunction with the operation of the handle H, and the door tip side end face of the first door body 2 is retracted. 22 of the door frame 1 is released from the locked state with respect to the door leading edge side vertical frame 10, and the opening of the first door body 2 becomes possible. When the first door body 2 rotates by a predetermined angle, the upper intermediate projection surface 372, the upper door tip side projection surface 32', the lower intermediate projection surface 382, and the lower door tip side projection surface 33' of the second door body 3 are provided. The second portion 81 of the rotation angle regulating member 8 is fitted to the second vertical edges 262, 292 of the openings 260, 290 of the upper intermediate projection surfaces 26, 26' and the lower intermediate projection surfaces 29, 29' of the first door member 2. The rotation of the first door member 2 with respect to the second door member 3 is regulated by the abutment.

By rotating only the first door 2 to a predetermined angle, the first space and the second space are communicated with each other, air flows from the first space to the second space, and thereby the first space and the second space are connected. , the door (first door 2+second door 3) can be easily rotated toward the first space (see FIGS. 17 and 18). Further, the pressure difference between the first space and the second space is reduced, so that the first door body 2 rotates in the closing direction of the opening 4 of the second door body 3 due to the urging force in the closing direction. When the pressure difference between the first space and the second space substantially disappears, the first door body 2 assumes the closing posture with respect to the second door body 3 due to the urging force in the closing direction. and the second door body 3 rotate together. When the hand is released from the handle H of the opened first door body 2, the first door body 2 and the second door body 3 are integrally rotated in the closing direction by the closing force of the door closer 15, and the entire opening is closed. After returning to the closed state, the latch L1 protruding from the end face 22 of the first door body 2 on the door tip side engages with the latch receiver 1000 formed on the projection surface 100 of the door tip side vertical frame 10 of the door frame 1 .

In this embodiment, when the pressure difference between the first space and the second space is eliminated, the first door body 2 maintains the closed posture with respect to the second door body 3 by the biasing force in the closing direction. The first door body 2 (closed position with respect to the second door body 3) and the second door body 3 are made to rotate integrally. On the other hand, the first door body 2 and the second door body 3 rotate integrally in a posture in which the first door body 2 rotates by a predetermined angle with respect to the second door body 3 (see FIG. 18). It's okay.

As described above, in this embodiment, the rotation angle regulating member 8 of the first door body 2 is provided at the gap between the first door body 2 on the front end side and the second door body 3 on the bottom side of the door. Thus, the operability of the door is improved by restricting the movement so that the first door 2 is opened only to an opening angle that can eliminate the pressure difference. The rotation angle regulating member 8 is provided in the gap between the first door body 2 on the front side of the door and the second door body 3 on the bottom side of the door, so that it is not exposed to the outside of the door, thereby improving the design of the door. It does not affect sex. In addition, the rotation angle regulating member 8 can be retrofitted after the door is hung, and workability is also good.

[G] Other aspects [G-1] Interference prevention structure when the first door 2 rotates with respect to the second door 3 Fig. 21(A) is a view corresponding to Fig. 4; is a diagram corresponding to the portion of FIG. 12, and the description given above can be used as appropriate for the description of each configuration in FIGS. 21A and 21B.

As shown in FIG. 21A, the third frame 92 is provided so as to protrude upward from the door tail side upper surface 25 of the first door member 2 along the door tail side upper surface 25. A vertical side consisting of the upper end portion of the surface 21 (a portion extending upward beyond the door trailing side upper surface 25) and a vertical side horizontally facing the door trailing side upper surface 25 from the upper end of the vertical side to the first viewing surface 20 side. and an extending horizontal side 920 . A groove is formed from the vertical and horizontal sides 920 of the third frame 92 and the upper surface 25 on the side of the door trailing edge, and the groove is provided with an airtight member S7.

The second space side part of the bottom surface 371 of the door trailing edge side of the second door body 3 is a recessed part consisting of a horizontal surface 312 and a vertical surface 313, and when the opening is fully closed, the upper half part of the third frame 92 is recessed. A gap is formed by the third frame 92 and the recess. When the first door body 2 is in the fully closed position, the corners of the second door body 3 (formed by the vertical surface 313 and the bottom surface 371 on the side of the door trailing edge) are pressed against the airtight member S7. The second side portion of the gap between the door tail side upper surface 25 and the door tail side lower surface 371 of the second door body 3 is closed. The third frame 92 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

In the upper horizontal side 920 of the third frame 92, a predetermined portion near the rotation axis P is cut out, and the horizontal side 920 located in the cutout portion 9200 is narrower than the width of the portion without the cutout. width. By forming the notch 9200, when the first door 2 rotates with respect to the second door 3, the horizontal side 920 of the third frame 92 and the corner of the second door 3 (the vertical surface 313 and the door (formed by the bottom side bottom surface 371 and the upper intermediate projection surface 372) do not interfere with each other.

The sixth frame 95 is provided so as to protrude downward from the door trailing side lower face 28 along the door trailing side lower face 28 of the first door body 2, and is located at the lower end portion of the second viewing surface 21 (door trailing side lower face). 28) and a horizontal side 950 extending horizontally toward the first viewing surface 20 from the lower end of the vertical side while facing the bottom surface 28 on the side of the door trailing edge. A groove is formed from the vertical and horizontal sides 950 of the sixth frame body 95 and the bottom surface 28 on the side of the door trailing edge, and the groove is provided with an airtight member S10.

The second space side part of the door tail side upper surface 381 of the second door body 3 is a recessed part consisting of a horizontal surface 314 and a vertical surface 315, and when the opening is fully closed, the lower half part of the sixth frame 95 is recessed. A gap is formed from the sixth frame 95 and the recess. When the first door body 2 is in the fully closed position, the corners of the second door body 3 (formed by the vertical surface 315 and the door bottom side upper surface 381) are pressed against the airtight member S10, thereby closing the first door body 2. The second side part of the gap between the bottom surface 28 on the side of the trailing edge and the top surface 381 on the side of the door trailing edge of the third door body 3 is closed. The sixth frame 95 is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

In the horizontal side 950 on the lower side of the sixth frame 95, a predetermined portion near the rotation axis P is cut out, and the horizontal side 950 positioned in the cutout portion 9500 is wider than the width of the portion without the cutout. It is narrow. By forming the notch 9500 , when the first door 2 rotates with respect to the second door 3 , the horizontal side 950 of the sixth frame 95 and the corner of the second door 3 (the vertical surface 315 and the door (formed by the bottom side upper surface 381 and the lower intermediate projection surface 382) do not interfere with each other.

As shown in FIG. 21(B), the second frame 92' is provided so as to protrude upward from the top surface 25' of the door trailing side of the first door member 2 along the top surface 25' of the door trailing side. 2. A vertical side consisting of the upper end portion of the viewing surface 21 (the portion extending upward beyond the top surface 25' on the door bottom side), and a first viewing surface spaced apart from the upper end of the vertical side and facing the top surface 25' on the door trailing side. and a horizontal side 920' extending horizontally to the 20 side. A groove is formed from the vertical and horizontal sides 920' of the second frame 92' and the upper surface 25' on the side of the door trailing edge, and the groove is provided with an airtight member S7'.

The second space side portion of the lower surface 37' of the upper portion 3A' of the second door 3 is a recessed portion consisting of a horizontal surface 312 and a vertical surface 313, and when the opening is fully closed, the upper portion of the second frame 92' The half portion is located in the recess, and the second frame 92' and the recess form an interlocking portion. When the first door body 2 is in the fully closed position, the corners of the second door body 3 (formed by the vertical surface 313 and the lower surface 37') are pressed against the airtight member S7', thereby opening the door of the first door body 2. The second side portion of the gap between the bottom side upper surface 25' and the lower surface 37' of the upper portion 3A' of the second door body 3 is closed. The second frame 92 ′ is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21 .

In the upper horizontal side 920' of the second frame 92', a predetermined portion near the rotation axis P is cut out, and the horizontal side 920' located in the cutout portion 9200' is the width of the portion without the cutout. It is narrower than the By forming the notch portion 9200 ′, when the first door body 2 rotates with respect to the second door body 3 , the horizontal side 920 ′ of the second frame 92 ′ and the corner (vertical plane) of the second door body 3 are aligned. 313, the lower surface 37', and the upper door end side projection surface 32') do not interfere with each other.

The fourth frame 95' is provided so as to protrude downward from the door bottom side bottom surface 28' along the door bottom side bottom surface 28' of the first door body 2, and is the lower end portion of the second viewing surface 21 (door and a horizontal side 950' extending horizontally toward the first viewing surface 20 while being spaced apart from the lower end of the vertical side and opposed to the rear-side lower surface 28'. and A groove is formed from the vertical and horizontal sides 950' of the fourth frame 95' and the lower surface 28' on the side of the door trailing edge, and the groove is provided with an airtight member S10'.

The second space side portion of the upper surface 38' of the lower portion 3B' of the second door 3 is a concave portion consisting of a horizontal surface 314 and a vertical surface 315, and when the opening is fully closed, the fourth frame 95' The lower half portion is positioned in the recessed portion, and a recessed portion is formed from the fourth frame 95' and the recessed portion. When the first door member 2 is in the fully closed position, the corner portion of the second door member 3 (formed by the vertical surface 315 and the upper surface 38' of the lower portion 3B') is pressed against the airtight member S10'. The second side portion of the gap between the bottom surface 28' of the first door body 2 and the top surface 38' of the third door body 3 is closed. The fourth frame 95' is contained within the thickness of the first door body 2 and does not protrude from the second viewing surface 21. - 特許庁

In the lower horizontal side 950' of the fourth frame 95', a predetermined portion near the rotation axis P is cut out, and the horizontal side 950' positioned in the cutout portion 9500' is a portion without the cutout. The width is narrower than the width. By forming the notch portion 9500 ′, when the first door body 2 rotates with respect to the second door body 3 , the horizontal side 950 ′ of the fourth frame 95 ′ and the corner (vertical plane) of the second door body 3 are aligned. 315, the upper surface 38', and the lower door tip side projection surface 33') do not interfere with each other.

FIG. 22 is a cross-sectional view showing a state in which the first door 2 is rotated 90 degrees with respect to the second door 3, and FIG. It is a cross-sectional view showing a state rotated by a predetermined angle. 22 and 23 are cross-sectional views seen from the direction of the arrow in FIG. 21(B). Suspension of the first door 2 with respect to the second door 3 is performed in the posture shown in FIG.

As shown in FIG. 22, in a state in which the first door body 2 is rotated 90 degrees with respect to the second door body 3, the upper end-side projection surface 32' of the second door body 3 is aligned with the second frame 92'. The second portion 84 of the reinforcing member which is fixed to the upper door end side prospective surface 32' faces the notch portion 9200' of the upper horizontal side 920' of the upper side of the door and the airtight member S7', and the notch portion 9200 'is located within.

As shown in FIG. 23, when the first door body 2 rotates in the closing direction from the state shown in FIG. ) enters the second viewing surface 21 side of the edge line of the horizontal side 920', but the notch 9200' of the horizontal side 920' rotates around the corner. Therefore, the horizontal side 920' and the corner portion of the second door body 3 (formed by the vertical surface 313, the lower surface 37', and the upper door leading side projection surface 32') do not interfere with each other.

22 and 23, when the first door 2 rotates with respect to the second door 3, the second frame 92' of the first door 2 and the corner (vertical surface 313) of the second door 3 The relationship between the horizontal side 920 of the third frame 92 and the corner of the second door body 3 (vertical relationship between the surface 313, the bottom surface 371 on the door trailing side, and the upper intermediate projection surface 372), the horizontal side 950 of the sixth frame 95, and the corner portion of the second door body 3 (the vertical surface 315 and the top surface 381 on the door trailing side). and the lower intermediate projection surface 382), the horizontal side 950' of the fourth frame 95' and the corner portion of the second door body 3 (the vertical surface 315, the upper surface 38', and the lower door end projection surface 33 formed from ') can be used as an explanation of the relationship.

[G-2] Double Door As shown in FIG. 24, in one embodiment, the door system is a double door. One door of the double door consists of a first door body 2 and a second door body 3, and the other door consists of one door body 16. - 特許庁The first door body 2 and the second door body 3 form a vertical rectangular door in a state where the first door body 2 is in a closed position with respect to the second door body 3 and integrated with each other. close the opening of The door frame 1' is a quadrilateral rectangular frame including a first vertical frame 10', a second vertical frame 11', an upper frame 12', and a lower frame 13'. A hinge 14 rotatably connects the second vertical frame 11 ′, and a hinge 14 rotatably connects the door 16 to the first vertical frame 10 ′. The second door body 3 and the door body 16 each have a door closer 15 . As for the configurations of the first door 2 and the second door 3, the description given above can be used.

[G-3] Unlocking the electric lock In one embodiment, the latch lock 4 built into the first door body 2 is located at the door bottom side portion of the first viewing surface 20 of the first door body 2. An opening is formed at the bottom, and an inspection decorative cover 40 is detachably attached with screws so as to block the opening (see FIGS. 24 and 25). The case of the latch lock 4 is provided with an unlocking operation portion 41 of the latch L2 so as to face the opening (see FIG. 25(B)). When the door device according to the present embodiment is installed, when the reset button (not shown) of the electric strike 5 is pushed to bring the first door body 2 into the fully closed posture with respect to the second door body 3, the latch lock 4 is opened. It is confirmed that the latch L2 and the electric strike 5 are fixed and locked, the first door body 2 and the second door body 3 are connected, and the door operates as an integrated door (a state in which the door is not folded at the center). When the electric strike 5 is locked in order to check the operation as an integrated door, the decorative cover 40 for inspection is removed, and the latch L2 of the latch lock 4 and the electric strike 5 are opened by the unlocking operation from the unlocking operation section 41. By unlocking the lock, the first door 2 can be opened (usually, when the first door 2 and the second door 3 are integrated, an electric strike will is not unlocked).

[G-4] Wiring of electric lock When the latch L1 (see FIG. 6) provided on the door end side of the first door body 2 is composed of an electric lock, the electric wire of the electric lock forms the rotation axis P. It is possible to wire so as to extend to the frame side through the hollow portion of the pipe (for example, the pipe of the hinge portion P1 shown in FIG. 2). More specifically, the electric wire extends from the electric lock provided with the latch L1 through the inner space of the first door body 2 to the lower end of the pipe, and extends in the pipe in the height direction from the lower end to the upper end of the pipe. It can be wired so as to extend from the upper end of the pipe through the inner space of the second door body 3 to the door tip side, and extend from the door tail side end face 34 into the door tail side vertical frame 11 .

[G-5] Structure of Door Body One or both of the first door body 2 and the second door body 3 may be provided with a window portion. For example, a window is provided on the surface of the first door 2 .

Either one or both of the first door body 2 and the second door body 3 may be provided with a small door for passing a fire hose. Such a small door can be formed from a part of the first or second door body 3 . For example, in FIG. 2, the lower corner portion of the second door body 3 on the side of the door is used as a small door. This small door is an opening small door having a square shape when viewed from the front and having a front end surface, a rear end surface, an upper end surface, and a lower end surface. It is formed from the end surface 33 portion, and the lower end surface is formed from the lower end surface 36 portion of the second door member 3 . For example, in FIG. 10, the lower corner portion of the first door body 2 on the side of the door is used as a small door. This small door is a square opening small door having a front end face, a door trailing end face, an upper end face, and a lower end face, and the door leading end face is the door leading end face of the first door body 2 . 22', and the lower end surface is formed from the lower surface 27' of the first door member 2 on the side of the door leading edge.

1 door frame 2 first door body 200 projecting piece 24 upper surface 25 on the door trailing edge side upper surface 26 on the upper middle prospective surface (first prospective surface)
26' upper intermediate prospective surface (first prospective surface)
27 door tip side lower surface 28 door trailing side lower surface 29 lower intermediate prospective surface (first prospective surface)
29' lower intermediate prospective surface (first prospective surface)
260 opening (receiving part, rotation angle restricting means)
262 Second vertical edge 290 opening (receiving portion, rotation angle restricting means)
292 Second vertical edge 3 Second door 372 Upper middle prospective surface (upper prospective surface, second prospective surface)
32' upper door end side prospective surface (upper prospective surface, second prospective surface)
382 lower intermediate prospective surface (lower prospective surface, second prospective surface)
33' lower door end side prospective surface (lower prospective surface, second prospective surface)
8 rotation angle regulation member (rotation angle regulation means)
80 first portion 81 second portion (protrusion, rotation angle restricting means)
83 first part (reinforcing member)
84 second part (reinforcing member, contact part)
85 Screw G Gap P Rotation shaft core S6, S9, S6', S9' Airtight member

Claims (15)

A door device comprising a first door body and a second door body for opening and closing an opening formed by a door frame,
The door edge side of the first door body can be engaged with and detached from the door edge side of the door frame,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the opening is fully closed, the first door body and the second door body face each other closely with a gap between the prospective surfaces to form the door,
When the door is initially opened from the fully closed position, if a pressure difference that acts as a resistance to opening the door is generated, the pressure difference can be eliminated by rotating only the first door body.
A rotation angle regulating means of the first door body is provided in the gap, and the rotation angle regulating means permits the first door body to turn to an extent capable of canceling the differential pressure, and the opening is opened. restricting the rotation of the first door body with respect to the second door body when only the first door body is rotated by a predetermined angle from the fully closed state;
door device. When the opening is fully closed, the projecting piece is located on the first side of the gap provided with the rotation angle restricting means and projects from the viewing surface of one of the first door body and the second door body. is close to the projected surface of the other door body, positioned on the second side of the gap, and the airtight member provided on the projected surface of one of the first door body and the second door body is the other is in close contact with the expected surface of the door body of
A door system according to claim 1. The gap provided with the rotation angle regulating means is a gap extending in the height direction formed between the projection surfaces extending in the height direction.
3. The door apparatus according to claim 1 or 2. The gap provided with the rotation angle regulating means is positioned near the rotation axis of the first door body,
The door device according to any one of claims 1-3. The rotation angle restricting means includes a first element provided on one of the projected surface of the first door body and the projected surface of the second door body, and a second element provided on the other projected surface, When the opening is fully closed, the first element and the second element are positioned in the gap. The two elements abut to restrict the rotation of the first door with respect to the second door.
The door device according to any one of claims 1-4. The first element is a receiving portion formed on the viewing surface, the second element is a projection protruding from the viewing surface,
When the opening is fully closed, the protrusion is positioned at a first position within the receiving portion,
When the first door body rotates by a predetermined angle from the closed posture, the protrusion moves to a second position within the receiving part and comes into contact with the receiving part, thereby opening the first door relative to the second door body. restriction of body rotation,
The door device according to claim 5. The first element is a receiving portion formed on the prospective surface of the first door body, and the second element is a projection formed on the prospective surface of the second door body.
The door apparatus according to any one of claims 5 and 6. The expected surface of the first door body is defined in the height direction between the top surface on the door tip side and the top surface on the door bottom side at different heights, and between the end of the top surface on the door bottom side and the tip end of the top surface on the door bottom side. an upper middle prospective surface extending to the height direction between the lower surface of the door tip side and the lower surface of the door trailing side at different heights and the end of the door trailing side of the lower face of the door trailing side and the end of the door trailing side of the lower face of the door trailing side an extending lower intermediate viewing surface;
The projection surface of the second door includes an upper projection surface and a lower projection surface that face the upper intermediate projection surface and the lower intermediate projection surface of the first door body with a gap when the opening is fully closed,
One of the first element and the second element of the rotation angle regulating means is provided on the upper intermediate projection surface and the lower intermediate projection surface of the first door body, and the other is provided on the upper projection surface and the lower projection surface of the second door body. provided on the surface,
The door device according to any one of claims 5-7. The first element and the second element are provided on a prospective surface extending in the height direction,
The second element has an L shape in a cross-sectional view composed of a first portion and a second portion, and when the first door body is rotated to the first side with respect to the second door body, the first door body It has a shape and dimensions that allow it to be inserted from the second side into the gap between the expected surface of the door body and the expected surface of the second door body,
The second element is in a state in which the first part is in contact with the expected surface of the second door body, and the second part is inserted as a projection into the receiving part of the expected surface of the first door body, wherein the first portion is fixed to the viewing surface of the second door;
The door device according to any one of claims 5-8. An airtight member is provided at a second side portion of the prospective surface of the first door body,
The second element includes the airtight member provided on the prospective surface of the first door body in a state where the first door body is rotated to the first side with respect to the second door body, and the second door body. It has a shape and dimensions that can be inserted from the space between the second side part of the prospective surface,
the first portion of the second element is fixed to a second side portion of the viewing surface of the second door body by a screw;
When the opening is fully closed, the screw is concealed by the airtight member coming into contact with the second side portion of the projection surface of the second door body.
A door system according to claim 9. A reinforcing member is fixed to a portion spaced apart from the second side portion of the projection surface of the second door body,
The reinforcing member has a contact portion rising from the projection surface, and the projecting dimension of the contact portion is larger than the gap between the projection surfaces where the first element and the second element are positioned when the opening is fully closed. The contact portion is small, is located on the first side of the base end portion of the projection formed by the second portion, and is in contact with or is close to the base end portion in a state capable of contacting the base end portion.
11. A door system according to any one of claims 9 and 10. A door for opening and closing an opening formed by a door frame is composed of a first door body and a second door body,
The door edge side of the first door body can be engaged with and detached from the door edge side of the door frame,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the door is first opened from the fully closed position, if there is a differential pressure that acts as a resistance to opening the door, only the first door body is rotated to the first side to eliminate the differential pressure. In the door system composed of:
The first projection surface of the first door body and the second projection surface of the second door body extend in the height direction, and when the opening is fully closed, the first projection surface and the second projection surface face each other. a gap extending in the height direction is formed in the gap, and a receiving portion is formed on one of the first and second projection surfaces,
Assuming that the first door body is rotated to the first side with respect to the second door body in the closed position, the gap between the first projection surface of the first door body and the second projection surface of the second door body is to form an insertion space on the second side,
A state in which a rotation angle regulating member having a projection is inserted between the first projection surface and the second projection surface from the insertion space, and the projection is inserted into the receiving portion of the one projection surface. and fixing the rotation angle regulating member to the other prospective surface on which the receiving portion is not formed;
A method for mounting a rotation angle regulating member in a door device. The receiving portion is formed on the first projection surface of the first door body,
The rotation angle regulating member having an L-shaped cross section composed of a first portion and a second portion forming the projection is inserted from the insertion space between the first projection surface and the second projection surface. , the first portion is in contact with the second projection surface, and the second portion is inserted into the receiving portion of the first projection surface;
fixing the first portion of the rotation angle regulating member to the second projection surface with a screw;
13. A method of mounting a rotation angle regulating member in the door device according to claim 12. A door device comprising a double door that opens and closes an opening formed by a door frame, one door comprising a first door body and a second door body, and the other door ,
The door tip side of the first door body can be engaged with and disengaged from the door tip side of the other door ,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the opening is fully closed, the first door body and the second door body face each other closely with a gap between the prospective surfaces to form the door,
When the door is initially opened from the fully closed position, if a pressure difference that acts as a resistance to opening the door is generated, the pressure difference can be eliminated by rotating only the first door body.
A rotation angle regulating means of the first door body is provided in the gap, and the rotation angle regulating means permits the first door body to turn to an extent capable of canceling the differential pressure, and the opening is opened. restricting the rotation of the first door body with respect to the second door body when only the first door body is rotated by a predetermined angle from the fully closed state;
door device. A double door that opens and closes an opening formed by a door frame is composed of one door and the other door composed of a first door body and a second door body ,
The door tip side of the first door body can be engaged with and disengaged from the door tip side of the other door ,
The door bottom side of the second door body is rotatably mounted on the door bottom side of the door frame,
The first door body is rotatably attached to the second door body,
When the door is first opened from the fully closed position, if there is a differential pressure that acts as a resistance to opening the door, only the first door body is rotated to the first side to eliminate the differential pressure. In the door system composed of:
The first projection surface of the first door body and the second projection surface of the second door body extend in the height direction, and when the opening is fully closed, the first projection surface and the second projection surface face each other. a gap extending in the height direction is formed in the gap, and a receiving portion is formed on one of the first and second projection surfaces,
Assuming that the first door body is rotated to the first side with respect to the second door body in the closed position, the gap between the first projection surface of the first door body and the second projection surface of the second door body is to form an insertion space on the second side,
A state in which a rotation angle regulating member having a projection is inserted between the first projection surface and the second projection surface from the insertion space, and the projection is inserted into the receiving portion of the one projection surface. and fixing the rotation angle regulating member to the other prospective surface on which the receiving portion is not formed;
A method for mounting a rotation angle regulating member in a door device.

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