JP2012097420A - Simultaneous opening/closing mechanism for double doors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous opening/closing mechanism for double doors which is durable, simple structure, and capable of being installed to a minimum space.SOLUTION: An opening/closing mechanism 30 provided to double doors 1 comprises: a pair of drive gears 32a and 32b provided to rotating shafts 31 of a left door 11 and a right door 12 respectively; one rack 33a disposed to one side of one drive gear 32a and the other rack 33b disposed to the other side of the other drive gear 32b; and a frame 34 for transferring linear movement of the one rack 33a to the other rack 33b. With the other rack 34b being moved toward the same direction as the one rack 34a by the frame 34, the other drive gear 32b is rotated in a direction opposite to a rotating direction of the one drive gear 32a, whereby the right door 12 is opened automatically when the left door 11 is opened.

Description

  The present invention relates to an automatic opening / closing mechanism for a double door in which left and right doors are double-opened.

Unlike double sliding doors, double doors do not require a space to store the doors, and can be installed even in narrow passages and corridors. Further, since the double doors close the passage and the hallway with the two doors, the size of the door can be made smaller than that of the single door if the corridors have the same width, so that the occupied area accompanying the opening and closing of the door can be reduced.
In order to open the double doors, it is necessary to open two doors to the left and right at the same time, so it is necessary to use both hands. However, it may be difficult for a person who is in a wheelchair when one or both hands are closed with luggage or the like to open both at once.

In order to eliminate the drawbacks of such double doors, an open / close mechanism has been proposed in which both doors open and close simultaneously.
For example, Patent Document 1 describes a left and right simultaneous opening / closing door in which a chain gear of the same diameter is fitted to a door spindle that pivots a door, and a chain is attached to the chain gear or a chain is mounted in parallel. Yes.
In Patent Document 2, left and right drive bevel gears provided on the left and right rotating shafts of a double door, left and right driven bevel gears meshed with the drive bevel gears, and a transmission shaft provided with the driven bevel gears at both ends are provided. A double door opening and closing device provided is described. Further, in Patent Document 2, a drive pulley provided on a rotating shaft of a double door, a transmission belt that engages with the drive pulley and transmits rotational force, and left and right driven pulleys with which the transmission belt engages. And a double door opening and closing device provided with left and right transmission gears which are provided coaxially with the driven pulley and mesh with each other.

Japanese Utility Model Publication No. 7-25571 JP 2001-107644 A

  However, in the left and right simultaneous open / close door described in Patent Document 1, the chain is mounted in parallel to the chain gear or in a hooked shape, but when the chain is mounted in parallel, the opening direction of the door is opposite. End up. If the chain is mounted in a hooked state, the crossing chains will rub against each other, causing damage or breakage during use, which may result in failure of operation.

  In the double door opening and closing apparatus described in Patent Document 2, the transmission shaft is rotated by the driven bevel gear by the rotation of the drive bevel gear, but a space for arranging the driven bevel gear is secured higher than that of the drive bevel gear. The height of the space for storing the opening / closing mechanism is higher than that of the left / right simultaneous opening / closing door described in Patent Document 1. Further, in the double door opening / closing device constituted by the drive pulley, the transmission belt, the driven pulley, and the transmission gear, it is necessary to provide the transmission gear at the center, and the number of parts increases. Therefore, not only the maintenance becomes complicated, but also the cost increases.

  Accordingly, an object of the present invention is to provide a simultaneous opening / closing mechanism of a double door that is highly durable, has a simple structure, and can be installed in a small space.

  The present invention provides a double door opening / closing mechanism in which one door and the other door are opened on one side and / or the other side in a pair of doors provided on respective rotary shafts of the one door and the other door. A driving gear, one rack disposed on one side of one of the pair of driving gears, and the other side of the other driving gear disposed in the same direction as the one rack. A pair of racks configured to rotate the drive gear in a direction opposite to the rotation direction of the one drive gear, and a transmission member that transmits linear movement of the one rack to the other rack. It is characterized by.

When one of the double doors is opened, one drive gear provided on the rotation shaft of the one door rotates. As one drive gear rotates, one rack provided on one side of the one drive gear moves linearly. As the one rack moves linearly, the transmission member transmits the movement and moves the other rack in the same direction as the one rack. The other rack is arranged on the other side of the other drive gear, and the other drive gear is rotated in the opposite direction to the rotation direction of the one drive gear by moving in the same direction as the one rack. The other door opens by rotation. Therefore, the other door can be opened only by opening one door.
In the opening / closing mechanism of the present invention, the rotation of the drive gear due to the rotation of one door is converted into linear movement by the rack and transmitted to the other door by the transmission member. Since there is no need to arrange the rack and the transmission member high, the height is not bulky. In addition, since no chain is used as the transmission member, wear does not occur due to crossing of the chain, etc., so that it has high durability.

  If the door stop which suppresses opening and closing of the said door to the other side is provided, it can prevent that a door opens in the opposite direction.

  When the magnet provided on the transmission member and an adsorbed body that attracts the magnet and fixes the door in the open position when the door is in the open position, the door is fixed in the open position. Can do. Further, since the fixing is based on the magnet's attracting force, when closing, the door can be closed by peeling the magnet from the bracket member by the closing operation to the door.

  When at least the rotating shaft of the one door is supported by the gravity hinge, the opened door is automatically closed from the door side where the gravity hinge is provided, so that convenience can be improved.

It is desirable to include a driven gear meshed with the one rack and a braking device that decelerates the rotation of the driven gear and adjusts the speed when the one rack moves in the closing direction.
The braking device decelerates the rotation of the driven gear accompanying the movement of the one rack in the closing direction, so that it slowly rotates when one of the doors closes. Therefore, since one door closes slowly and the other door also closes slowly, it can be set as a safe double door by preventing both doors closing at an excessive speed.

  According to the present invention, since the rotation of the drive gear is converted into linear movement by the rack and transmitted by the transmission member, the number of parts is reduced, and there is no need to arrange the rack and the transmission member higher than the position of the drive gear. So the height is not bulky. In addition, since no chain is used as the transmission member, wear does not occur due to crossing of the chain, etc., so that it has high durability. Therefore, the present invention has high durability, can be configured with a simple structure, and can be installed in a small space.

It is a front view which shows the double door which concerns on embodiment of this invention. It is a top view for demonstrating the simultaneous opening-closing mechanism of the double door shown in FIG. It is a figure for demonstrating the opening / closing operation | movement to the near side of the double door shown in FIG. 2, (A) is a figure which shows the opening start, (B) is a figure which shows an open state. It is a figure for demonstrating the opening-and-closing operation | movement to the back side of the double door shown in FIG. 2, (A) is a figure which shows the opening start, (B) is a figure which shows an open state. It is a front view which shows the 1st modification of the double hinged door which concerns on embodiment of this invention. It is a top view which shows the 2nd modification of the double hinged door which concerns on embodiment of this invention. It is sectional drawing which shows the 3rd modification of the double door which concerns on embodiment of this invention.

A double door according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the double door 10 is configured such that one door and the other door are double-opened on the front side which is one side and the back side which is the other side. The double door 10 is installed in a door frame 20 constituted by an upper frame 21, vertical frames 22, 22 and a lower frame 23.
The double door 10 includes a left door 11 that is one door and a right door 12 that is the other door. The left door 11 and the right door 12 are supported on the upper frame 21 by a rotating shaft 31 that rotates in accordance with opening and closing.

Here, an opening / closing mechanism that automatically opens and closes the other door at the same time when one of the double doors 10 is opened / closed will be described with reference to FIG.
The opening / closing mechanism 30 is built in the upper frame 21. The opening / closing mechanism 30 has a pair of drive gears 32a and 32b arranged coaxially with the rotation shaft 31, a pair of racks 33a and 33b meshed with the drive gears 32a and 32, and racks 33a and 33b. Frame 34 and a holding member 35 that keeps the door open. Further, the left door 11 and the right door 12 are supported by a gravity hinge 36 provided on the lower frame 23 coaxial with the rotation shaft 31. With this gravity hinge 36, when the door is opened, the door rises in a spiral shape and the support position of the door is raised, so that the door is automatically closed by its own weight when closing.

The drive gears 32a and 32b are spur gears that rotate as the rotating shaft 31 rotates. The drive gears 32a and 32b can be made of plastic or metal.
The racks 33a and 33b are linearly moved along the longitudinal direction of the upper frame 21 by the rotation of the drive gears 32a and 32b. One rack 33a is disposed on the front side, which is one side of one drive gear 32a. The other rack 33b is disposed on the back side, which is the other side of the other drive gear 32b.

  The frame 34 functions as a transmission member that transmits the linear movement of one rack to the other rack. The frame 34 is formed of a rectangular metal frame and is stored in a state of being placed in the upper frame 21. At one end S1 of the frame 34, one rack 33a is provided on one inner side surface S1a. The other rack 33b is provided on the other inner side S2a of the other end S2 of the frame 34.

Two sets of holding members 35 are provided corresponding to the case where the door is opened on the near side and the case where the door is opened on the far side. The holding member 35 is an L-shaped object that is attracted to the magnet 35a when the left door 11 and the right door 12 are opened and the magnet 35a that moves together with the frame 34 and the left door 11 and the right door 12 are opened. And a metal fitting 35b.
The magnet 35 a is formed of a neodymium magnet having a strong magnetic force, and is provided so as to straddle the inside of the frame 34. The L-shaped metal fitting 35b is fixed to the upper frame 21 by screwing so that the magnet 35a located in the open state can be attracted. In the present embodiment, the L-shaped metal fitting 35b is adopted as the metal fitting member to be attracted to the magnet 35a. However, as long as it can be fixed to the upper frame 21 and is attracted to the magnet 35a, the L-shaped metal fitting 35b is used. Other magnets having opposite polarities to the magnet 35a may be used.

The operation and use state of the double doors according to the embodiment of the present invention configured as described above will be described with reference to the drawings. In the present embodiment, a case where the left door 11 is pulled to the near side, which is one side, will be described as an example.
As shown in FIG. 3A, the operator pulls the handle provided on the left door 11 and opens the left door 11. As the left door 11 rotates about the rotation shaft 31, the drive gear 32a rotates clockwise as viewed from above. As the drive gear 32a rotates clockwise, the rack 33a linearly moves to the left.

As the rack 33a moves linearly to the left, the frame 34 that transmits the movement of the rack 33a moves to the left. As the frame 34 moves to the left, the rack 33b moves linearly to the left.
The drive gear 33b rotates counterclockwise by the linear movement of the rack 33b. When the drive gear 32b rotates counterclockwise, the rotation shaft 31 of the right door 12 rotates, and the right door 12 opens to the front side with the right door 12 as a center.

  As shown in FIG. 3B, when the left door 11 and the right door 12 are opened to the open position, the magnet 35a provided inside the frame 34 is attracted to the L-shaped metal fitting 35b, so the left door 11 and the right door 12 can be prevented from starting to close. Therefore, even if a hand leaves | separates from a door, it can be set as the state which opened both doors.

In the above description, the case where the left door 11 is pulled has been described, but even when the right door 12 is pulled, the movement directions of the drive gears 32a and 32b, the racks 33a and 33b, and the frame 34 are the same, and the right door 12 is pulled. Only the left door 11 can be automatically opened.
When the door is closed, the drive gears 32a and 32b, the racks 33a and 33b, and the frame 34 operate in a direction opposite to the rotation method and the moving direction by the door opening operation, thereby closing the door.

  At this time, when either the left door 11 or the right door 12 is slightly moved in the closing direction in the first closing operation, the magnet 35a moves in a direction away from the L-shaped bracket 35b along with the movement of the frame 34. Move away from the bracket 35b. The left door 11 and the right door 12 are moved in the closing direction by their own weights of the left door 11 or the right door 12 because the bottom of the rotary shaft 31 and the coaxial position are supported by the gravity hinge 36.

In the present embodiment, as shown in FIG. 1, since the gravity hinges 36 are provided on both the left door 11 and the right door 12, each door rotates in the closing direction by its own weight. Even if the gravity hinge 36 is provided on only one of the left door 11 and the right door 12, the double door 10 has an opening / closing mechanism 30 that automatically closes the other door when one door is closed. So that both doors can be closed. Therefore, the cost can be suppressed by using one door as the gravity hinge 36 and the other door as the rotation shaft.
However, since it is assumed that there is a case where the force of closing the other door cannot be obtained by the operation of the opening / closing mechanism 30 only by the weight of one door, the gravity hinge 36 is provided on both doors. The door can be closed.

Next, the case where the left door 11 and the right door 12 open to the back side from the door frame 20 is demonstrated based on drawing.
As shown in FIG. 4A, the operator pushes the left door 11 to open it. As the left door 11 rotates about the rotation shaft 31, the drive gear 32a rotates counterclockwise. As the drive gear 32a rotates counterclockwise, the rack 33a linearly moves to the right.

As the rack 33a moves linearly to the right, the frame 34 that transmits the movement of the rack 33a moves to the right. As the frame 34 moves to the right, the rack 33b moves linearly to the right.
The drive gear 33b rotates clockwise by the linear movement of the rack 33b. As the drive gear 32b rotates clockwise, the rotation shaft 31 of the right door 12 rotates, and the right door 12 opens to the back with the right door 12 as the center.

As shown in FIG. 4B, when the left door 11 and the right door 12 are opened to the open position, the magnet 35a provided on the inner side of the frame 34 is attracted to the L-shaped metal fitting 35b. Also, both doors can be open.
In this way, if one of the left door 11 and the right door 12 is pushed and opened, the other door can be opened. For example, in a nursing facility or a hospital, the double door 10 is passed while pushing a wheelchair or a bed. When you do, you can easily open the door and pass through. Moreover, since the double door 10 can make one door small if it is the same passage width compared with a single door, the fan-shaped area occupied by the rotation of the door can be reduced. Furthermore, the double door 10 does not need a space for storing the door like a sliding door.

  As described above, in the double door 10 according to the present embodiment, the rotation of the drive gears 32a and 32b is converted into linear movement by the racks 33a and 33b meshing at the same horizontal position as the drive gears 32a and 32b, and the rectangular frame Since the linear movement is transmitted by the frame 34 formed in a shape, the number of parts can be reduced. Further, since it is not necessary to arrange the racks 33a, 33b and the frame 34 higher than the positions of the drive gears 32a, 32b, the height is not bulky. Therefore, it can be accommodated in the upper frame 21, and the upper frame 21 can be formed thin. Furthermore, since the linearly moving frame 24 is used as the transmission member and no chain is used, wear does not occur due to the crossing of the chain. Therefore, the closing mechanism 30 has high durability.

Next, a modification of the double door according to the embodiment will be described based on the drawings.
In the first modification shown in FIG. 5, a door stop 37 is provided on the upper frame 21. By providing the door stop 37, the left door 11 and the right door 12 can be prevented from opening to the back side opposite to the front side.
When the door stop 37 is provided, the left door 11 and the right door 12 can be opened only on the front side, so that the holding member 35 located on the right side of the two sets of holding members 35 shown in FIG.

In the second modified example shown in FIG. 6, as the opening / closing mechanism 30x, a rack 33a is arranged at one end S1 of the frame 34 and on the inner side S1b on the other side of the drive gear 32a, and The rack 33b is arranged at the other end S2 of the frame 34, on the near side, which is the inner side S2b on one side of the drive gear 32b, and is positioned on the opposite side to the arrangement shown in FIG.
Even when the rack 33a is arranged in this way, the direction of linear movement of the racks 33a, 33b and the frame 34 is compared with the opening / closing mechanism 30 shown in FIG. It is the same except that it is in the opposite direction. By opening one door, the other door can be opened.

  In the third modification shown in FIG. 7, a braking mechanism is provided as the closing mechanism 30y. The braking mechanism includes a driven gear 38 that meshes with the rack 33 a and a braking device 39 that adjusts the rotational speed of the driven gear 38.

The braking device 39 is supported on the frame 34 by a support member 34a. When the rack 33a moves in the opening direction of the left door 11 (leftward in the example shown in FIG. 2, rightward in the example shown in FIG. 6), the braking device 39 does not brake the rotation of the driven gear 38. However, when the rack 33a moves in the closing direction of the left door 11 (right in the example shown in FIG. 2 and left in the example shown in FIG. 6), the braking device 39 applies braking to the rotation of the driven gear 38. . Therefore, the rotation speed of the driven gear 38 is adjusted and the movement of the racks 33a and 33b becomes slow, so that the drive gears 32a and 32b rotate slowly.
The rack with which the driven gear 38 meshes can be the other rack 33b in addition to the one rack 33a. In this case, since the rotation of the driven gear 38 is opposite, the braking of the braking device 39 is also adjusted to the rotation direction of the driven gear 38.

  The adjustment of the rotation of 32a and 32b by the braking device 39 is particularly effective since the doors are automatically prevented from closing at an excessive speed from the open state when the gravity hinge 36 is provided. In addition, it is not necessary to provide new parts by interlocking the braking mechanism with the rack 33a. The number of parts can be reduced. Thus, it can be set as a safe double door by providing a brake mechanism in the closing mechanism 30y.

  The present invention is suitable for a double door, and is particularly suitable for a double door installed in a hospital or a care facility.

DESCRIPTION OF SYMBOLS 10 Double door 11 Left door 12 Right door 20 Door frame 21 Upper frame 22 Vertical frame 23 Lower frame 30, 30x Opening / closing mechanism 31 Rotating shaft 32a, 32b Drive gear 33a, 33b Rack 34 Frame 34a Support member 35 Holding member 35a Magnet 35b L Metal fitting 36 Gravity hinge 37 Door stop 38 Drive gear 39 Braking device S1 One end S1a One side inner surface S1b The other inner surface S2 The other end S2a The other inner surface S2b One inner surface

Claims (5)

In the simultaneous opening and closing mechanism of the double doors in which one door and the other door are opened on one side and / or the other side,
A pair of drive gears provided on respective rotation shafts of the one door and the other door;
One rack disposed on one side of one of the pair of drive gears and the other drive gear disposed on the other side of the other drive gear, and moving the other drive gear by moving in the same direction as the one rack. A pair of racks comprising the other rack that rotates in the direction opposite to the direction of rotation of the one drive gear;
A simultaneous opening / closing mechanism of a double door comprising a transmission member for transmitting the linear movement of the one rack to the other rack.   The simultaneous opening and closing mechanism of a double door according to claim 1, wherein a door stop for preventing the door from opening and closing to the opposite side is provided.   The simultaneous opening of the double doors according to claim 1 or 2, further comprising: a magnet provided on the transmission member; and an attracted body that attracts the magnet to fix the door in the open position when the door is in the open position. Opening and closing mechanism.   The simultaneous opening / closing mechanism of a double door according to any one of claims 1 to 3, wherein at least a rotation shaft of the one door is supported by a gravity hinge.   5. The driven gear according to claim 1, further comprising: a driven gear meshing with the one rack; and a braking device that decelerates the rotation of the driven gear and adjusts the speed when the one rack moves in the closing direction. The simultaneous opening and closing mechanism of the double doors as described in the paragraph.

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