JP6534267B2 - Ceiling access door - Google Patents

Description

  The present invention relates to a ceiling access opening.

  As a ceiling inspection opening fixed to the circumference of the opening opened on the ceiling and supporting a lid put in the ceiling through the opening to close the opening, the one described in Patent Document 1 is conventionally known. In this conventional example, the ceiling inspection opening projects the support piece from the four circumferences inward of the opening, and a pair of locking members having different heights are arranged above the opening and has a resilient performance. A piece is formed at the proximal end of each locking member.

  The ceiling inspection opening described above can prevent the lid from being shaken and detached by wind pressure or the like because the lid is sandwiched between the support piece and the locking piece, and the locking piece is elastically deformed. Sometimes the locking member also prevents the lid from lifting. On one of the higher locking members, a recess is formed which allows the edge of the sloping lid to be drawn outward on the opening side, and when removing the lid, the Kendon operation, ie First of all, if one end edge side of the lid facing one of the locking members having the recessed portion is pushed upward, the locking piece at the corresponding position is unlocked with elastic deformation and the lid Tilts, and then, while the lid body is tilted, the sliding piece is moved toward the recessed portion, and the locking piece at the opposite position is also unlocked. In this state, the opposite end edge of the lid is at a position deviated from the locking member, and finally the lid can be removed by pushing the end edge upward.

Japanese Patent Laid-Open No. 7-179639

  However, in the above-described conventional example, since it is necessary to improve the elastic performance of the locking piece in consideration of the detachment operability of the lid, the locking member substantially relies on the locking member to prevent the lid from being bent. The locking member and the lid must be disposed at a considerable distance to secure the placement space and the like of the locking piece and the recessed portion. Therefore, the conventional example relates to the opening and closing of the door of the high airtight housing. At that time, the lid is greatly lifted up, and at that time, the lid is inclined and deviates to the side, etc., and there is no way to avoid the possibility that the detached lid falls into the room. There is a drawback of that.

  Furthermore, in the prior art, there is also a disadvantage that the detachment operation of the lid takes a lot of time.

  The present invention has been made to solve the above-mentioned drawbacks, and it is possible to effectively prevent the lid from coming off when the door of a high airtightness house is opened or closed, and to improve the open / close operability. The purpose is to provide a possible ceiling access opening.

According to the invention said object is
A ceiling inspection which is formed by framing the frame member 7 in a rectangular frame shape and is fixed around the opening 2 opened in the ceiling 1 and supports the lid 4 inserted in the ceiling back 3 through the opening 2 to close the opening 2 In the mouth,
The lid 4 is supported movably back and forth between a use preparation position and a use position along a specific diagonal D direction by a support piece 8 projecting like a flange on the inner peripheral edge of each frame 7
The frame material 7 on the two adjacent sides is superposed on the upper surface in the vicinity of three corner portions of the lid 4 as it moves from the use preparation position to the usage position to regulate the floating amount , and the lid 4 Is achieved by providing a ceiling access port which is formed at a predetermined distance from the support piece 8 when the presser piece 9 is released from polymerization with the lid 4 when in the ready-to-use position .

According to the present invention, the ceiling inspection opening formed by framing the frame member 7 in a rectangular frame shape supports the lid 4 so as to be able to translate along a specific diagonal D direction, and the use preparation position and use position Allow the lid 4 to move back and forth.
A pressing portion 6 is formed by a pressing piece 9 provided on the frame member 7 that is superposed on the upper surface of the lid 4 along with the movement from the use preparation position to the usage position. Regulate the amount of uplift. Furthermore, the regulation of the floating amount at the use position of the lid 4 by the pressing portion 6 utilizes the movement of the lid 4 in the diagonal D direction from the use preparation position, in the vicinity of three corners thereof . Is done.

  Therefore, by positioning the lid 4 at the use position, the lid 4 can be pressed by the pressing portion 6 and movement of the lid 4 to the ceiling back 3 can be prevented or suppressed. In addition, since the pressing portion 6 can be avoided by positioning the lid 4 at the use preparation position, the lid 4 can be lifted from the indoor side at the use preparation position, for example. It can be removed to the side and opened easily. It is sufficient for the cover 4 to be attached by aligning the cover 4 at the use preparation position with the ceiling and back 3 and lowering it toward the indoor side, contrary to the above.

  Further, the cover 4 is moved in the direction of the diagonal D in order to prevent or suppress the movement to the ceiling / sealing 3. In other words, the cover 4 is lowered below the holding portion 6 by horizontal movement, and can be pulled out from below the holding portion 6 By doing this, the lid 4 and the pressing portion 6 can be disposed close to each other, which makes the lid 4 float up to such a height that there is a possibility that the lid 4 may come off when the door of a high airtightness house is opened or closed. It can be effectively prevented.

In addition, the pressing by the pressing unit 6, in order to be made in the vicinity of the corners 5 three places of the cover 4, the distance between the corner 5, the effect of the length of one side of the cover 4 in other words together The inclination to the vertical and horizontal directions of the lid 4 can be effectively prevented and suppressed. Further, the polymerization of the pressing portion 6 in the vicinity of three corner portions 5 is adjacent to one corner portion 5 of the lid 4 on the use position side and adjacent to the one corner portion 5. By setting the vicinity of the two corner portions 5 to be the polymerization target of the pressing portion 6, the lid 4 can be extremely easily realized by moving it in the diagonal D direction toward the use position. Furthermore, by setting the overlapping area of the pressing part 6 in the vicinity of three corner portions 5 of the lid 4, for example, the pressing part 6 is polymerized compared to the case where the vicinity of the central part of the lid 4 is made the overlapping area. The amount of movement of the lid 4 in the diagonal D direction can be reduced, and operability can be enhanced.

  The above-mentioned ceiling inspection opening has an area slightly smaller than the opening 2 by setting the projecting amount of the support 11 formed for supporting the lid 4 to the opening 2 a little larger. However, by using such a small area, the lid 4 can be made horizontally translatable. Furthermore, for example, in the vicinity of the three corner portions 5, if the pressing portion 6 is extended in parallel above the above-mentioned support portion 11 at a predetermined interval, the remaining one portion from the corner portion 5 side By moving the lid 4 in the direction of the diagonal D, it is possible to sink the vicinity of three corner portions 5 of the lid 4 below the pressing portion 6. Further, if the amount of extension of the support 11 to the opening 2 in the vicinity of the remaining one corner portion 5 described above is set larger than the movement amount of the lid 4, the closed state of the opening 2 is maintained before and after movement. It is possible.

  In the state where the lid is supported, the arrangement of the pressing portion can not be grasped from the indoor side, so for example, a mark serving as a mark for discriminating the specific diagonal D direction described above is provided on the indoor side exposed portion But it is enough.

Furthermore, in this case
The frame members 7A and 7B having a predetermined cross-sectional shape are formed adjacent to each other and arranged in a rectangular frame shape.
Each frame member 7 is formed with a support piece 8 projecting like a flange at the inner peripheral edge in the frame state,
If each of the frame members 7A of one type is formed parallel to the support piece 8 at a predetermined distance and with a pressing piece 9 having a smaller amount of protrusion, the commonality of the frame members 7 is enhanced. Mass production efficiency can be improved.

  In addition, when the pressing portion 6 and the like are protruded above the support portion 11 and the like as described above, the pressing portion 6 is likely to be an obstacle when the lid 4 is lowered from the ceiling back 3 and attached. In particular, when the lid 4 lifted from the indoor side is lowered and attached, it is difficult to align the lid 4 with the posture for fending the pressing portion 6 because the position of the pressing portion 6 on the ceiling back 3 side can not be seen become. In this regard, if the inclined surface 10 for guiding the lid 4 to the use preparation position is formed at the tip of the pressing piece 9 described above by abutting on the peripheral edge of the lid 4 moving toward the support piece 8 side, The holding portion 6 can be easily moved over the support portion 11 simply by lowering the lid 4 which has been approximately aligned at the preparation position.

  In addition, if the airtight member 12 is interposed between the support 11 and the lid 4 as described above, it is desirable for preventing a draft, improving the sound insulation performance, etc., or maintaining the airtightness in a highly airtight house. Furthermore, when a high friction body is employed as such an airtight member 12, the movement resistance of the lid 4 can be increased, so that the lid 4 is used between the use position and the use preparation position by vibration or the like. It can prevent you from moving around.

  As apparent from the above description, according to the present invention, it is possible to effectively prevent the lid from coming off when the door of a high airtightness house is opened or closed, and it is also possible to improve the opening / closing operability. Since the ceiling inspection port can be provided, good maintenance and management of the indoor environment and the equipment behind the ceiling can be facilitated.

FIG. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along line 1B-1B of FIG. 1A. It is a perspective view explaining assembly of a ceiling inspection port, installation operation, (a) is a figure which shows an assembly method, (b) is a figure which shows an installation state. It is a figure which shows a connection with a lid, (a) is an end elevation explaining when lowering a lid from a ceiling back, (b) is a 3A partial enlarged view of (a), (c) is 3B of (a) FIG. It is a figure explaining a use operation, and is a top view. FIG. 5A is a cross-sectional view taken along line 5A-5A of FIG. 4 for explaining the operation of the lid involved in the use operation. FIG. 6A is an end view taken along line 6A-6A in FIG. 5, and FIG. 6B is an end view taken along line 6B-6B in FIG.

  FIG. 1 and FIG. 2 (a) show a ceiling inspection opening A according to the present invention. In this embodiment, the ceiling inspection opening A has a support portion 11 for supporting the lid 4 and a pressing portion 6 for regulating the floating amount of the lid 4 from above the support portion 11, and the inspection opening It is formed in the shape of a rectangular frame surrounding 20.

  The bearing portion 11 is formed in a flange shape extending over the entire inner peripheral edge, and by supporting the peripheral edge of the lid 4, the inspection opening 20 can be closed. At the lower end of the ceiling inspection opening A at which the support portion 11 is disposed, a decorative flange 21 is formed so as to extend over the entire outer periphery at the opposite outer peripheral edge portion, whereby the parting portion of the ceiling 1 can be concealed. In addition, about the positional relationship of the upper and lower sides etc. for convenience of explanation, it defines based on the installation state to the ceiling 1 of the ceiling inspection opening A as a reference.

  On the other hand, the pressing portion 6 is formed in a bowl shape protruding inward. The formation range is not the entire circumference of the ceiling inspection opening A which has a rectangular frame shape like the support portion 11 but only almost the entire length of two adjacent sides, and an appropriate clearance is added to the thickness of the lid 4 It is disposed parallel to the bearing 11 at a certain interval. The pressing portion 6 is disposed above the support portion 11, and the amount of inward protrusion of the support portion 11 is slightly reduced.

  The above-described ceiling inspection opening A is made of a metal material such as aluminum and, as shown in FIG. 2A, is formed by framing four frames 7 corresponding to each side. All the frame members 7 are extrusion products having the same longitudinal dimension, and are configured by two sets of two types (7A, 7B) according to the presence or absence of the pressing portion 6 described above.

  As shown in FIG. 2A and the like, one type of frame member 7A has the support piece 8 and the pressing piece 9 juxtaposed in the orthogonal direction from both side edges of the strip parting piece 22. It is formed by projecting the decorative piece 23 in the opposite direction. On the other hand, the other kind of frame member 7B is formed by extending the support piece 8 and the decorative piece 23 in the orthogonal direction from only one side edge of the parting piece 22 with the above-described pressing piece 9 being omitted. . The overhang dimensions of the support piece 8 and the decorative piece 23 from the cut-off piece 22 are the same in both of the two frame members 7A and 7B, and both of the cut-off pieces 22 are slightly wider than the thickness of the ceiling member 24 By forming the frame members 7 in a rectangular shape so that the bearing pieces 8 face each other in an inward direction, each of the bearing portion 11 and the decorative flange 21 described above is a bearing piece 8 and a cosmetic It is formed by combining four sets of pieces 23. Further, by making the projecting dimension of the pressing piece 9 from the separating piece 22 slightly smaller than that of the supporting piece 8, the pressing piece 6 is disposed on adjacent two sides in the above-mentioned framework, whereby the pressing portion 6 described above Is formed by combining two sets of the pressing pieces 9.

  Further, the upper surface of each of the support piece 8 and the decorative piece 23 is attached with an airtight material 12 made of foamed polyethylene which is excellent in airtightness and has a large frictional resistance. The airtight material 12 is in the form of a long strip along the longitudinal direction of the support pieces 8 and the like, and has a continuous rectangular frame like the frame 7 by the frame of the frame 7. The width is determined in consideration of air tightness and frictional resistance described later.

  Further, a mounting piece 25 is extended from the upper end edge of the parting piece 22 so as to extend the parting piece 22 upward. The attachment piece 25 functions as an attachment margin for attaching the ceiling inspection opening A to the ceiling 1 by screwing, and the middle portion in the extension direction faces inward in the case of the above-mentioned framework and is a screw A groove 25a, which serves as a guide for the stop height position, is recessed. In addition, at the leading end edge of the pressing piece 9, an inclined surface 10 is formed so as to gradually approach the bearing piece 8 as it goes to the leading end.

  The above-mentioned frame members 7 are cut at an angle of 45 degrees so that the four ends are combined to form a rectangular frame, and a corner piece 26 is used in the framework. The corner piece 26 is for connecting the ends of the frame member 7. Specifically, a pair of connection pieces 27 connectable to the end of the frame member 7 are arranged in the orthogonal direction to form a substantially L shape. It is manufactured by bending a metal plate material in a substantially L-shape. The connection piece 27 is formed in a substantially plate-like shape, and is formed to have a width dimension that substantially matches the width of the cut-off piece 22 described above. In FIG. 2 (a), reference numeral 27a denotes a convex portion formed by extrusion in the thickness direction by doweling or the like, and the slot portion for smooth connection by fitting with the slot portion 28 described later. The long connection piece 27 is formed in a predetermined thickness dimension in a well-balanced manner while keeping the contact area at the time of fitting with the connector 28 small.

  Further, in order to enable mutual connection via the corner pieces 26 described above, the slot portion 28 described above is formed in the frame member 7. The slot portion 28 is a slot-like opening capable of fitting the connection piece 27. The slot portion 28 is formed by bending a band-like narrow piece 29 between the parting piece 22 and the mounting piece 25 described above. It is formed using the narrow strip 29 and the cut-off piece 22. Specifically, the narrow strip 29 is formed outward from the upper end of the see-through piece 22 in the orthogonal direction from the upper end of the narrow strip 29 to the facing piece in this state, and between each of the narrow strip 29 and the decorative piece 23 The ridges 30 are erected so as to face each other at an interval corresponding to the thickness of the connection piece 27. In addition, as shown in FIG. 2, hexagonal through holes 27 b are provided in the connection pieces 27 of the corner piece 26, and after the connection pieces 27 are inserted into the slot portions 28 of the frame member 7, The portions overlapping with the through holes 27 b are pressed from the inside to connect the adjacent frame members 7, 7.

  Accordingly, the ceiling inspection opening A is configured in a rectangular frame shape in which four rounds are surrounded by the parting pieces 22 by sequentially connecting the end portions of the frame members 7 in the orthogonal direction by the corner pieces 26. In the installation on the ceiling 1, as shown in FIG. 2 (b) and FIG. 5, an opening 2 having a size substantially corresponding to the ceiling inspection opening A is opened between the edges 31 and 31 of the ceiling 1 After the ceiling inspection opening A is inserted from the indoor side from the inside, the mounting piece 25 is penetrated to screw the wood screw 32 into the field edge 31. The ceiling inspection opening A is formed by pressing the decorative flange 21 against the ceiling 1 through the airtight member 12 and screwing the mounting flanges 25 at opposite positions to the pair of non-edges 31, 31. It is firmly fixed to it and secures high airtightness with the opening 2 in the fixed state.

  In this state, the inspection opening 20 having a size slightly smaller than the opening 2 is opened in the ceiling 1, and the lid 4 for opening and closing the inspection opening 20 utilizes the ceiling material 24. It is manufactured by field construction. For the ceiling material 24 as a material of the lid 4, it is possible to divert an end material cut out when the above-mentioned opening 2 is opened, and such end material is slightly larger than the size of the inspection opening 20 It is obtained by adjusting the size one size smaller to a larger degree. The cross 33 is attached to the surface of the ceiling material 24, and only the ceiling material 24 is cut at the time of the above-mentioned size adjustment, and the cloth 33 pops out from the periphery of the ceiling material 24 by leaving it without cutting. As shown in FIG. 3A, covering the periphery of the ceiling material 24 with the cross 33 covers the periphery of the side edge and the back surface as well, as shown in FIG. It can be obtained as body 4.

  In addition, at the time of size adjustment mentioned above, a region (hereinafter referred to as “ceiling” which is substantially surrounded by four edges of the leading edge of the pressing portion 6 formed on adjacent two sides of the ceiling inspection opening A When the lid 4 is lowered from the back of the ceiling 3 as shown in FIG. 3 (a) by being sized so as to fit within the back opening 34 ”), it passes through the ceiling back opening 34. The inspection opening 20 can be closed by the lid 4 by supporting the peripheral portion thereof by the support 11. Furthermore, in this embodiment, as shown in FIGS. 3 (b) and 3 (c), the lid 4 is in the normal position in which the plane center thereof is aligned with the plane center of the ceiling back opening 34. Adjustment is made so as to separate an appropriate clearance (C) over the entire circumference from the portion 34.

  In addition, since the inclined surface 10 is formed at the tip of the pressing piece 9 as described above, when the lid 4 collides with the inclined surface 10 when the lid 4 is lowered from the ceiling back 3, this inclination It is guided by the surface 10 into the ceiling back opening 34. Therefore, when the lid 4 is lowered from the ceiling back 3, as shown in FIG. 3 (b), in addition to the clearance (C) described above, the planar dimension (A) of the inclined surface 10 is also added Even if there is a positional deviation, it can be absorbed and smoothly mounted on the support portion 11.

  Furthermore, a second inclined surface 35 is also formed at the tip end portion of the pressing portion 6. As shown in FIG. 3B, the second inclined surface 35 faces the indoor side opposite to the above-described inclined surface 10, and gradually approaches the pressing portion 6 toward the tip, that is, upward Slope towards. Therefore, the lid 4 is guided by the second inclined surface 35 even if there is a positional deviation from the normal position according to the planar dimension (B) of the second inclined surface 10, and the ceiling back 3 from above the bearing 11 It can be lifted smoothly.

  In addition, the above-described pressing portion 6, that is, the parting piece 22 on which the pressing piece 9 is formed, separates a gap (S) from the peripheral edge of the lid 4 which takes a regular position. Therefore, the lid 4 can move horizontally in the normal position within the range of the gap (S) between the edges of the two sides and the parting piece 22. The planar movable dimension (S) is larger than the planar dimension (B) of the second inclined surface 35 described above. Therefore, the lid 4 is shifted in the horizontal direction from the normal position, so that the pressing piece 9 is the upper surface Interfere with the upswing. Further, the planar movable dimension (S) is smaller than the overhanging dimension of the support 11 from the parting piece 22.

  Furthermore, since the pressing pieces 9 are formed on adjacent two sides of the ceiling inspection opening A, the lid 4 can also be moved in the diagonal D direction passing through the intersection of the two sides. The two sets of the pressing pieces 9 simultaneously interfere with the upper surface thereof. The two sets of pressing pieces 9 formed on adjacent two sides simultaneously interfere almost over the entire length of the adjacent two sides in the rectangular plate-like lid 4 to make the lifting of the lid 4 extremely effective. Regulate. That is, the cover 4 is restricted from rising at the three corner portions 5 included in the above two sides by the pressing portion 6, so that even if the cover 4 tries to rotate in the inclination direction about a specific side, In at least one of the corner portions 5, movement in the rotational direction is restricted, so there is no possibility of rotation or tilting, and there is no large rattling. Furthermore, by restricting the rotation of the lid 4 on the rotation tip side, the pressing piece 9 does not need to have a very high strength.

Therefore, in this embodiment, the diagonal D direction (2 in FIG. 4) from the position where the lid 4 can be lifted to the pressing portion 6 from the position where it can be lifted to the back sole 3 (usage preparation position) When sliding toward the pressing portion 6 along the arrow direction of the dot-and-dash line, a position where the side edge portions of the two sides sink below the pressing portion 6 beyond the formation range of the second inclined surface 35 (use position The lid 4 can be moved up to. This sliding operation can be performed until the side edge of the lid 4 butts against the parting strip 22 below the pressing portion 6 as shown in FIG. 5 and FIG. The pressing portion 6 is positioned above the side edge portions of the two sides of the lid 4. Therefore, for example, in the case where the ceiling inspection opening A described above is installed in a highly airtight house, the lid 4 does not lift up in this state even if a force that pushes up the lid 4 is exerted by the pressure at the door opening and closing. .

  Further, as shown in FIG. 6 (b), in this state, the lid 4 maintains a state in which the side edge opposite to the pressing portion 6 runs on the support portion 11, and therefore the peripheral portion Since the entire circumference of the bearing is supported by the bearing 11, the closed state of the inspection opening 20 is also maintained.

  Furthermore, in this state, between the lid 4 and the support portion 11, the airtight material 12 is disposed over the entire circumference around the inspection opening 20, and is disposed between the decorative flange 21 and the ceiling 1. The air tightness of the room is enhanced in combination with the above-mentioned air tight material 12. For this reason, the installation of the ceiling inspection opening A does not reduce the high airtightness rating of the house.

  When opening the ceiling inspection opening A, slide the lid 4 in the direction away from the pressing portion 6 along the diagonal D direction, and then pull out the lid 4 from the lower side of the pressing portion 6 to move the ceiling back 3 It can be returned to the position where it can be lifted. This sliding operation can be performed until the lid 4 collides with the two sets of cut-out pieces 22 facing the two sets of holding pieces 9 across the ceiling back side opening 34, and in this state, as described above 4 can be lifted. After lifting the lid 4, if necessary, for example, by tilting the lid 4 and aligning one side of the rectangle with the diagonal D of the inspection opening 20, the inspection opening 20 can be removed, for example. You can check the equipment on the ceiling 3 from. As described above, since the airtight member 12 has a large frictional resistance, the lid 4 slides around due to vibration or the like, and the unopenable state shifts to the openable state. There is nothing to lose.

DESCRIPTION OF SYMBOLS 1 ceiling 2 opening 3 ceiling back 4 lid 5 corner part 6 press part 7 (7A, 7B) frame material 8 support piece 9 press piece 10 inclined surface 11 support part 12 airtight member D diagonal

Claims (4)

A ceiling inspection opening which is formed by framing a frame material in a rectangular frame shape and is fixed around an opening opened in a ceiling, supports a lid body put on the ceiling through the opening, and closes the opening,
The lid is supported so as to be movable back and forth between a use preparation position and a use position along a specific diagonal direction by means of a bearing piece projecting in a flange shape on the inner peripheral edge of each frame member ,
The frame members on two adjacent sides are superposed on the upper surfaces in the vicinity of three corners of the lid along with movement from the use preparation position to the use position to regulate the floating amount , and the lid is ready for use A ceiling inspection opening in which a pressing piece which is released from polymerization with the lid when in position is formed at a predetermined distance from the supporting piece . The two types of two sets of frame members having a predetermined cross-sectional shape are formed adjacent to each other to form a rectangular frame , and
The ceiling inspection opening according to claim 1, wherein each of the frame members of one type is formed with the pressing piece which is parallel to the bearing piece at a predetermined distance and whose projecting amount is smaller than the bearing piece. .   The ceiling inspection opening according to claim 2, wherein the tip end portion of the pressing piece is formed with an inclined surface for guiding the lid to the use preparation position by abutting on the peripheral edge of the lid moving toward one side of the support.   The ceiling inspection port according to any one of claims 1 to 3, further comprising an airtight member interposed between the support for supporting the lid and the lid.

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