Construction doors and construction elevators

Abstract

To improve quietness during opening / closing of a construction door.SOLUTION: The construction door provided at each floor to partition a hoist body side and a stage side in a construction hoist comprises a door plate part 10 having a door frame 11 and a plate 12 with a hole having a peripheral edge held on the door frame 11. The door plate part 10 further has a rod-like member 13 disposed adjacently to the plate 12 with the hole in its plate thickness direction, and held at both ends in a longitudinal direction on the door frame 11, and held in the inner part of the plate 12 with the hole in which the middle part in the longitudinal direction is positioned inside the door frame 11.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a construction elevator used at a construction site and a construction door provided on each floor of the construction elevator. [Background technology]

[0002] Construction elevators used at construction sites comprise an elevator body that ascends and descends at the construction site, and construction doors that, for safety reasons, can be opened and closed to separate the elevator body side from the stage side on each floor of the construction site. Some construction doors are equipped with plate-like doors made of perforated metal, expanded metal, or other perforated plates, the peripheral edges of which are held in a door frame. Patent Document 1 discloses a construction door in which a perforated plate (perforated metal) is held in a door frame via a spacer rubber. In the construction door of Patent Document 1, the spacer rubber improves the adhesion between the perforated metal and the door frame, suppressing rattle of the perforated metal against the door frame, thereby improving quietness when the construction door is opened and closed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-055876 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there are various other causes of noise when opening and closing a construction door besides rattle between the door frame and the perforated plate, so there is room for improvement in the quietness of construction doors when opening and closing.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a construction door that can improve quietness when opening and closing, and a construction elevator equipped with the same. [Means for solving the problem]

[0006] The construction door of the present invention is a construction door that is installed on each floor of a construction elevator and separates the elevator main body side from the stage side, and comprises a door frame and a door panel portion having a perforated plate whose peripheral edge is held by the door frame, and the door panel portion is arranged adjacent to the perforated plate in its plate thickness direction, and both longitudinal ends are held by the door frame, and the door panel portion further comprises a rod-shaped member held on an inner part of the perforated plate whose midpoint in the longitudinal direction is located inside the door frame.

[0007] According to this configuration, the peripheral edge of the perforated plate is held by the door frame, and the inner part of the perforated plate is held by the rod-shaped member, so that the perforated plate can be prevented from vibrating in its thickness direction when the construction door is opened or closed. This makes it possible to suppress the generation of noise due to the vibration of the perforated plate when the construction door is opened or closed. Therefore, it is possible to improve the quietness when the construction door is opened or closed.

[0008] In the construction door according to the present invention, the inner portion of the perforated plate held by the rod-shaped member may be displaced in the plate thickness direction relative to the peripheral portion of the perforated plate held by the door frame.

[0009] In this configuration, the perforated plate is held by the door frame and the rod-shaped member in a state in which it is elastically bent in the plate thickness direction, which makes it possible to effectively suppress or prevent the perforated plate from vibrating in a manner that causes it to bend elastically, even if an external force acts on the perforated plate when the construction door is opened or closed.

[0010] In addition, in the construction door according to the present invention, the inner portion of the perforated plate may be held to the middle portion of the rod-shaped member by a bolt and nut.

[0011] In this configuration, simply by rotating the bolt and nut of the bolt-nut assembly relative to each other, the inner portion of the perforated plate can be easily brought closer to the rod-shaped member, i.e., the perforated plate can be easily elastically deflected. Furthermore, the amount of displacement of the inner portion relative to the peripheral edge of the perforated plate (the amount of deflection of the perforated plate) can be easily adjusted.

[0012] In addition, in the construction door according to the present invention, both ends of the rod-shaped member may be held by the door frame via an elastically deformable elastic body.

[0013] In this configuration, the elastic body improves the adhesion between both ends of the rod-shaped member and the door frame, suppressing or preventing the rod-shaped member from rattling against the door frame. This reduces noise caused by rattling of the rod-shaped member against the door frame when the construction door is opened or closed. Therefore, quietness when opening and closing the construction door can be further improved.

[0014] Furthermore, in the construction door according to the present invention, the door panel portions may be arranged in a plurality in one direction, the door panel portions adjacent to each other in the one direction may be foldably connected, and the construction door may further include a cushioning material provided on the opposing surfaces of the door panel portions that face each other when the adjacent door panel portions are folded.

[0015] With this configuration, for example, when folding multiple door panels to open the construction door, the cushioning material can prevent adjacent door panels from directly colliding with each other, thereby suppressing noise caused by collisions between door panels, further improving quietness when opening and closing the construction door.

[0016] Furthermore, in the construction door according to the present invention, the door panel portions are arranged in a single direction along the horizontal direction, and two adjacent door panel portions in the single direction form a pair of doors that are foldably connected by hinges with the vertical direction as the axis of rotation, and further include a plurality of connecting posts provided between each of the pairs of doors arranged in the single direction and at both ends of the pairs of doors, and rotatably connected to the door panel portions with the vertical direction as the axis of rotation, a guide rail that extends horizontally and guides the connecting posts so that they can move in the single direction, and a plurality of hanging devices that hang the connecting posts from the guide rails, respectively, and the hanging devices have rollers that roll in the single direction on the guide rails, and the rollers may be arranged in a plurality of rows in the single direction.

[0017] In this configuration, by moving the connecting posts along the guide rails so that the spacing between the connecting posts in one direction changes, the construction door can be opened by folding the multiple door panel sections, or the construction door can be closed by unfolding the multiple door panel sections. Furthermore, with this configuration, compared to when the hanging jig has only one roller in one direction, the force with which the same roller is pressed against the guide rail due to the load of the connecting post and the door panel connected to it can be reduced. As a result, even if the connecting post rotates around the vertical axis when opening and closing the construction door, causing the roller of the hanging jig to rub against the guide rail, the noise generated by the friction can be suppressed.

[0018] The construction elevator according to the present invention comprises an elevator body and the construction door. [Effects of the Invention]

[0019] According to the present invention, it is possible to improve the quietness when opening and closing a construction door. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a front view of a construction door according to one embodiment of the present invention, viewed from the stage side. [Figure 2] 1 is a top view of a construction elevator according to an embodiment of the present invention, showing a state in which the construction door is closed. FIG. [Figure 3] 1 is a top view of a construction elevator according to an embodiment of the present invention, showing the construction door in an open state. FIG. [Figure 4] FIG. 4 is a front view showing the main parts of the construction door of FIGS. [Figure 5] FIG. 5 is a view showing the perforated plate in FIGS. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4. [Figure 7] FIG. 4 is a top view showing the main part of the construction door of FIGS. 1 to 3 in a closed state. [Figure 8] FIG. 8 is a top view showing the process of opening the construction door from the state shown in FIG. 7. [Figure 9] FIG. 4 is a top view showing the main part of the construction door of FIGS. 1 to 3 in an open state. [Figure 10] FIG. 4 is a schematic perspective view showing a suspender that suspends a movable column (connecting column) from a guide rail in the construction door of FIGS. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 2 and 3, the construction elevator EV of this embodiment is used at construction sites and includes an elevator main body EV1 and a construction door 1. The elevator main body EV1 moves up and down at the construction site to transport materials and the like. The construction door 1 is provided on each floor of the construction site and separates the elevator main body EV1 side RE (hereinafter referred to as the elevator main body side RE) from the stage side RS of each floor in an openable and closable manner. 1 and 2, when the construction door 1 is closed (when the multiple door panel parts 10 described later are unfolded), it separates the elevator body side RE from the stage side RS. On the other hand, when the construction door 1 is open (when the multiple door panel parts 10 described later are folded) as shown in Fig. 3, people and objects can pass between the elevator body side RE and the stage side RS.

[0022] As shown in FIGS. 1 to 3, the construction door 1 comprises a plurality of door panels 10 lined up in one direction. Adjacent door panels 10 in one direction are foldably connected. In this embodiment, two adjacent door panels 10 in one direction constitute a pair of doors 2 foldably connected by a hinge 20. A plurality of pair of doors 2 are lined up in one direction. The construction door 1 of this embodiment further comprises a plurality of connecting pillars 3, a guide rail 4, and a plurality of hanging devices 5.

[0023] In the drawings, the X direction indicates the direction in which the multiple door panel portions 10 are lined up (the aforementioned one direction). In this embodiment, the X direction is a direction along the horizontal direction. The Y direction indicates the direction in which the elevator body side RE and the stage side RS are lined up, and is perpendicular to the X direction along the horizontal direction. The Z direction indicates the vertical direction perpendicular to the horizontal direction (X direction and Y direction).

[0024] As shown in FIGS. 4 and 6, each door panel portion 10 includes a door frame 11, a perforated plate 12, and a rod-shaped member 13. The door frame 11 has an opening penetrating in the thickness direction (Y direction) of the door panel portion 10. In the door frame 11 of this embodiment, a plurality of openings are arranged in the Z direction.

[0025] Specifically, the door frame 11 is made of a metal such as aluminum and is composed of a plurality of vertical frames 112 and horizontal frames 113. The vertical frames 112 each extend in the Z direction and are lined up at intervals in the X direction. The horizontal frames 113 each extend in the X direction and are lined up at intervals in the Z direction. The opening of the door frame 11 is formed by these vertical frames 112 and horizontal frames 113. Furthermore, the opening of the door frame 11 is formed in a vertically long rectangular shape with its height dimension (dimension in the Z direction) greater than its width dimension (dimension in the X direction). In the illustrated example (FIGS. 1 and 4), the door frame 11 has two vertical frames 112 and five horizontal frames 113. Therefore, the number of openings in the door frame 11 aligned in the Z direction is four. Note that the number of openings in the door frame 11 and the number of vertical frames 112 and horizontal frames 113 that make up the door frame 11 are not limited to the above example.

[0026] As shown in Fig. 5, the perforated plate 12 is a plate material having a large number of holes 121 penetrating in its thickness direction (Y direction). The perforated plate 12 in this embodiment is a metal plate material formed into a mesh shape such as expanded metal. The perforated plate 12 may also be, for example, a punched metal in which a large number of through holes are formed in a metal plate material. The thickness of the perforated plate 12 is set to an extent that the perforated plate 12 can be elastically flexibly deformed. When viewed from its thickness direction (Y direction), the perforated plate 12 is formed into a vertically long rectangular shape that corresponds to the opening of the door frame 11 (see Fig. 4).

[0027] 4 and 6, the peripheral edge of the perforated plate 12 is held by the door frame 11. Specifically, the peripheral edge of the perforated plate 12 is sandwiched by the door frame 11 in the thickness direction of the plate. That is, the perforated plate 12 is located inside the door frame 11 in the thickness direction (Y direction) of the door frame 11. In this state, the perforated plate 12 fills the entire opening of the door frame 11 (the inside of the door frame 11). In the following description, the part of the perforated plate 12 located inside the door frame 11 (i.e., the opening of the door frame 11) will be referred to as the inner part of the perforated plate 12.

[0028] The rod-shaped member 13 is formed in a rod shape extending in a predetermined direction. The rod-shaped member 13 is made of a metal such as aluminum. The rigidity of the rod-shaped member 13 is higher than the rigidity of the holed plate 12. In this embodiment, the rod-shaped member 13 is formed in a strip shape with the Y direction as the plate thickness direction, but is not limited to this. The rod-shaped member 13 may also be formed in a shape such as an L-shaped or C-shaped angle. In this case, the rigidity of the rod-shaped member 13 can be further increased.

[0029] The rod-shaped member 13 is arranged adjacent to the perforated plate 12 held by the door frame 11 in the plate thickness direction (Y direction) of the perforated plate 12. In other words, the rod-shaped member 13 is arranged so as to overlap with the opening of the door frame 11 when viewed from the thickness direction (Y direction) of the door frame 11. Furthermore, the rod-shaped member 13 is arranged so that when the construction door 1 is closed, the rod-shaped member 13 is located on the stage side RS (-Y direction side) of the perforated plate 12 (see FIG. 1). Moreover, the rod-shaped member 13 is arranged in the middle of the short side direction (X direction) of the opening so that the longitudinal direction of the rod-shaped member 13 is along the long side direction (Z direction) of the opening of the door frame 11.

[0030] Furthermore, the rod-shaped member 13 is arranged inside the door frame 11 in the thickness direction of the door frame 11 (i.e., the opening). In other words, the rod-shaped member 13 is arranged so as not to protrude outside from both ends of the door frame 11 in the thickness direction. Specifically, both longitudinal ends of the rod-shaped member 13 are placed on step surfaces 11a of the door frame 11 that are located inside the door frame 11 in the thickness direction (the opening). The step surface 11a is formed on the edge of the opening and faces in the thickness direction of the door frame 11. In this embodiment, the step surface 11a is formed on the horizontal frame 113 of the door frame 11.

[0031] Both longitudinal ends of the rod-shaped member 13 are held by the door frame 11. The means for holding both ends of the rod-shaped member 13 to the door frame 11 may be, for example, bolts and nuts, adhesive, etc. In other words, both ends of the rod-shaped member 13 may be fixed so as not to move relative to the door frame 11. In this embodiment, both ends of the rod-shaped member 13 are held by the door frame 11 via elastically deformable elastic bodies 14. That is, the elastic bodies 14 are interposed between the rod-shaped member 13 and the door frame 11. Specifically, the elastic bodies 14 are interposed between the rod-shaped member 13 and the step surface 11a of the door frame 11. The elastic bodies 14 may be, for example, rubber formed into a block or sheet shape. Note that both ends of the rod-shaped member 13 may also contact the door frame 11 without the elastic bodies 14 interposed therebetween.

[0032] As described above, when the rod-shaped member 13 is held by the door frame 11, the rod-shaped member 13 is positioned at a distance in the thickness direction from the perforated plate 12. Note that the rod-shaped member 13 held by the door frame 11 may come into contact with the perforated plate 12, for example.

[0033] A midway portion of the rod-shaped member 13 in the longitudinal direction is held at an inner portion of the perforated plate 12 held by the door frame 11. Specifically, a point-like portion of the midway portion of the rod-shaped member 13 in the longitudinal direction is held by the holder 15 at an inner portion of the perforated plate 12 that overlaps the rod-shaped member 13. The inner portion of the perforated plate 12 held by the rod-shaped member 13 is displaced in the plate thickness direction (Y direction) of the perforated plate 12 relative to the peripheral edge of the perforated plate 12 held by the door frame 11. Therefore, the perforated plate 12 is held by the door frame 11 and the rod-shaped member 13 in a state where it is elastically bent in the plate thickness direction. In this embodiment, there is only one portion (holding portion) where the holder 15 holds the intermediate portion of the same rod-shaped member 13 and the holed plate 12, and this portion is located midway in the longitudinal direction of the rod-shaped member 13, but this is not limited to this. There may be, for example, multiple holding portions for the rod-shaped member 13 and the holed plate 12. In this case, the multiple holding portions may be arranged at intervals in the longitudinal direction of the rod-shaped member 13.

[0034] In this embodiment, the inner portion of the hole plate 12 is held in the middle of the rod-shaped member 13 by a bolt nut 16, which is the holder 15. Specifically, a bolt 161 of the bolt nut 16 is inserted in order through the rod-shaped member 13 and the hole plate 12, and a nut 162 of the bolt nut 16 is screwed onto the portion of the bolt 161 that protrudes toward the hole plate 12. This allows the inner portion of the hole plate 12 to be held in the middle of the rod-shaped member 13. The bolts and nuts 16 attached to the perforated plate 12 and the rod-shaped members 13 are arranged inside (at the openings) of the door frame 11 in the thickness direction of the door frame 11. In other words, the bolts and nuts 16 do not protrude outside from either end of the door frame 11 in the thickness direction of the door frame 11.

[0035] Furthermore, a plate 17 having a larger area than the nut 162 when viewed in the thickness direction of the hole plate 12 is interposed between the hole plate 12 and the nut 162. This allows the hole plate 12 and the rod-shaped member 13 to be stably sandwiched between the bolts and nuts 16 even if the size of the hole 121 (see FIG. 5) of the hole plate 12 is larger than the nut 162. In a configuration in which the hole plate 12 is held to the rod-shaped member 13 by the bolts and nuts 16, the arrangement of the bolts 161 and nuts 162 relative to the rod-shaped member 13 and the hole plate 12 may be reversed from that in the example described above. In addition, the holders 15 that hold the hole plate 12 to the rod-shaped member 13 are not limited to the bolts and nuts 16.

[0036] As shown in Figures 1 and 4, two door panel parts 10 configured as described above constitute a pair of doors 2. In the pair of doors 2, the two door panel parts 10 are connected so as to be foldable with the Z direction as the axis of rotation. These multiple pair of doors 2 are lined up in the X direction.

[0037] 1 to 4, a plurality of connecting pillars 3 are provided between each pair of doors 2 aligned in the X direction and at both ends of each pair of doors 2. Each connecting pillar 3 is rotatably connected to the adjacent door panel 10 with the Z direction as the rotation axis.

[0038] The guide rail 4 extends in the X direction and guides the multiple connecting posts 3 so that they can move in the X direction. As shown in FIG. 1, the guide rail 4 of this embodiment is supported by a pair of support columns 6. The pair of support columns 6 each extend in the Z direction and are disposed at both ends of the guide rail 4 in the longitudinal direction (X direction). The guide rail 4 is attached to the upper ends of the pair of support columns 6. By erecting the pair of support columns 6 on the stage of each floor, the guide rail 4 can be held above the stage.

[0039] The support pillars 6 may be, for example, heavy pillars fixed to a stage. However, the components of the construction door 1 supported by the support pillars 6 (such as the above-mentioned guide rails 4, multiple connecting pillars 3, and multiple paired doors 2) can be made lightweight and simple using metal such as aluminum. For this reason, the support pillars 6 may be made from a combination of single-pipe construction pipes, for example. In this case, the construction door 1 can be easily installed and transported.

[0040] In this embodiment, as shown in Figures 1 to 3, of the multiple connecting columns 3 described above, one connecting column 3 arranged at one end (the end on the -X direction side in Figure 1) of the multiple pairs of doors 2 lined up in the X direction is a fixed column 3A fixed to a support 6. Therefore, the door panel portion 10 connected to the fixed column 3A does not move in the X direction but only rotates relative to the fixed column 3A. The multiple connecting columns 3 excluding the fixed column 3A are each movable columns 3B that are movable in the longitudinal direction of the guide rail 4 described above. Note that, for example, all of the connecting columns 3 may be movable in the X direction relative to the guide rail 4.

[0041] 1 and 4, the plurality of suspending devices 5 suspend the plurality of movable columns 3B (connecting columns 3) from the guide rails 4. Each suspending device 5 is attached to the guide rails 4 so as to be movable in the longitudinal direction thereof. 4 and 10, each suspending tool 5 has rollers 51 that roll in the X direction on the guide rail 4. A plurality of rollers 51 of each suspending tool 5 are lined up in the X direction. In the suspending tool 5 illustrated in FIG. 10, two rollers 51 are also lined up in the horizontal direction, in a direction perpendicular to the X direction (Y direction). This allows the suspending tool 5 to move in the longitudinal direction relative to the guide rail 4.

[0042] 1, 2, and 7, when the construction door 1 of this embodiment is closed, the distance between the multiple connecting pillars 3 arranged in the X direction is large, and accordingly, the two door panels 10 that make up the same pair of doors 2 are open (deployed) to each other. In this state, the thickness direction of each door panel 10 is approximately oriented in the Y direction, and the width direction of each door panel 10 is approximately oriented in the X direction. In the illustrated example, when the construction door 1 is open, the multiple door panels 10 are arranged so that they extend in the X direction while bending in the Y direction. In other words, the two door panels 10 that make up the same pair of doors 2 are bent at a small angle. The two door panels 10 that make up the same pair of doors 2 are mountain-folded in the Y direction toward the stage side RS. For this reason, the door panels 10 do not protrude toward the elevator body side RE relative to the guide rail 4.

[0043] As described above, in order to open the construction door 1 from a closed state, the connecting columns 3 are moved in the X direction along the guide rails 4 so that the spacing between the connecting columns 3 becomes smaller. Specifically, as shown in the example of Figure 8, the multiple movable columns 3B are each moved in the -X direction toward the fixed columns 3A. At this time, as the distance between the two adjacent connecting posts 3 becomes smaller, the two door panels 10 that make up the pair of doors 2 are folded (the angle formed by the two door panels 10 becomes larger). When these two door panels 10 are folded, the hinge 20 connecting the two door panels 10 moves in the Y direction toward the stage side RS. Therefore, even when the two door panels 10 are folded against each other, the door panels 10 do not protrude toward the elevator body side RE relative to the guide rail 4.

[0044] When this construction door 1 is open as shown in Figures 3 and 9, the multiple door panels 10 are folded in an accordion-like manner. In this state, the distance between the multiple connecting columns 3 lined up in the X direction is small, and therefore the two door panels 10 that make up the same pair of doors 2 are folded. In this state, the multiple door panels 10 are lined up in the thickness direction. Furthermore, all of the multiple door panels 10 are located on the stage side RS with respect to the guide rail 4, and do not protrude toward the elevator body side RE. To close the construction door 1 from an open state, the reverse of the operation for opening the construction door 1 is performed. That is, the connecting columns 3 (movable columns 3B) are moved in the X direction along the guide rails 4 so that the spacing between the multiple connecting columns 3 increases.

[0045] As described above, in the construction door 1, regardless of whether it is open or closed, the door panel 10 is not positioned on the elevator body side RE relative to the guide rail 4. This prevents the door panel 10 from interfering with the elevator body EV1. In the construction door 1 of this embodiment, the positions of the hinges 20 (rotation axes) connecting the two door panels 10 and the rotation axis that allows the door panels 10 and the connecting column 3 to rotate freely are carefully designed so that the door panel 10 is not positioned on the elevator body side RE relative to the guide rail 4. In addition, stoppers 7 (see FIGS. 7 and 8 ) are provided on the door panels 10 and the connecting column 3, and are sandwiched between the door panels 10 adjacent to each other in the X direction and between the door panel 10 and the connecting column 3 when the construction door 1 is closed.

[0046] 1, 4, and 7 to 9, the construction door 1 of this embodiment further includes a buffer material 30. The buffer material 30 has the property of absorbing (or mitigating) an external force such as an impact when the external force acts on the buffer material 30. The buffer material 30 may be made of, for example, rubber, sponge, or the like. The cushioning material 30 is provided on the opposing surfaces 10a of the door panels 10 that face each other when the door panels 10 are folded (i.e., when the construction door 1 is open) as shown in Fig. 9. The opposing surfaces 10a of the door panels 10 are surfaces that face the thickness direction of the door panels 10.

[0047] In this embodiment, the buffer material 30 is provided on the opposing surfaces 10a of the door panel portions 10 of the two pair of doors 2 that face each other in the X direction when the construction door 1 is open. The buffer material 30 provided on the opposing surfaces 10a is provided at the end of the door panel portion 10 where the hinge 20 is located in the width direction of the door panel portion 10 (Y direction in FIG. 9). Note that the buffer material 30 provided on the opposing surfaces 10a may also be provided at the end of the door panel portion 10 where the connecting post 3 is located in the width direction of the door panel portion 10, for example. The cushioning material 30 is also provided on the opposing surfaces 10b (hereinafter referred to as the other opposing surfaces 10b) of two door panels 10 that face each other in the same pair of doors 2 that face each other in the X direction when the construction door 1 is open. The cushioning material 30 provided on the other opposing surfaces 10b is provided at the end of the door panel 10 where the connecting post 3 is located in the width direction of the door panel 10 (the Y direction in FIG. 9). Note that the cushioning material 30 provided on the other opposing surfaces 10b may also be provided at the end where the hinge 20 is located in the width direction of the door panel 10, for example. In the illustrated example, the buffer material 30 is provided on both of the opposing surfaces 10a (10b) of the two opposing door panel portions 10, but it may be provided on only one of these two opposing surfaces 10a (10b). Also, the buffer material 30 may be provided on only one of the opposing surfaces 10a and 10b of the door panel portion 10.

[0048] As explained above, in the construction door 1 of this embodiment, both longitudinal ends of the rod-shaped member 13 are held by the door frame 11, and the middle longitudinal portion of the rod-shaped member 13 is held by the inner part of the perforated plate 12 located inside the door frame 11. This makes it possible to suppress the perforated plate 12 from vibrating in its thickness direction when the construction door 1 is opened or closed. This makes it possible to suppress the generation of noise due to the vibration of the perforated plate 12 when the construction door 1 is opened or closed. Therefore, it is possible to improve quietness when the construction door 1 is opened or closed.

[0049] Furthermore, in the construction door 1 of this embodiment, the inner portion of the perforated plate 12 held by the rod-shaped members 13 is displaced in the plate thickness direction (Y direction) of the perforated plate 12 relative to the peripheral edge of the perforated plate 12 held by the door frame 11. That is, the perforated plate 12 is held by the door frame 11 and the rod-shaped members 13 in a state in which it is elastically bent in its plate thickness direction. This makes it possible to effectively suppress or prevent the perforated plate 12 from vibrating so as to bend elastically, even if an external force acts on the perforated plate 12 when the construction door 1 is opened or closed. Therefore, it is possible to further improve quietness when the construction door 1 is opened or closed.

[0050] Furthermore, in the construction door 1 of this embodiment, the inner portion of the perforated plate 12 is held to the rod-shaped member 13 by the bolt nut 16. Therefore, simply by relatively rotating the bolt 161 and the nut 162 of the bolt nut 16, the inner portion of the perforated plate 12 can be easily brought closer to the rod-shaped member 13 in the plate thickness direction of the perforated plate 12. In other words, the perforated plate 12 can be easily elastically deflected. Furthermore, the amount of displacement of the inner portion of the holed plate 12 relative to the peripheral edge thereof (the amount of deflection of the holed plate 12) can be easily adjusted.

[0051] Furthermore, in the construction door 1 of this embodiment, both ends of the rod-shaped member 13 are held in the door frame 11 via elastically deformable elastic bodies 14. Therefore, the elastic bodies 14 improve the adhesion between both ends of the rod-shaped member 13 and the door frame 11, suppressing or preventing the rod-shaped member 13 from rattling against the door frame 11. This makes it possible to suppress the generation of noise caused by rattling of the rod-shaped member 13 against the door frame 11. Therefore, it is possible to further improve quietness when the construction door 1 is opened and closed.

[0052] Furthermore, in the construction door 1 of this embodiment, the rod-shaped members 13 and bolt nuts 16 (retainers 15) are arranged inside the door frame 11 (at the opening) in the thickness direction of the door frame 11, and do not protrude outside from either end of the door frame 11 in the thickness direction. Therefore, even if the door panel portions 10 are provided with rod-shaped members 13 and bolt nuts 16, in order to open the construction door 1, adjacent door panel portions 10 can be folded so that they overlap in the thickness direction. In other words, the rod-shaped members 13 and bolt nuts 16 can be prevented from obstructing the opening of the construction door 1. As a result, by applying the rod-shaped members 13 and bolt nuts 16 to an existing construction door, it is possible to improve noise reduction when opening and closing the construction door.

[0053] Furthermore, the construction door 1 of this embodiment is equipped with buffer materials 30 provided on the opposing surfaces 10a (10b) of the door panels 10 that face each other when the adjacent door panels 10 are folded. Therefore, when folding multiple door panels 10 to open the construction door 1, the buffer materials 30 can prevent the adjacent door panels 10 from directly colliding with each other. This makes it possible to suppress the generation of noise caused by the door panels 10 colliding with each other. Therefore, it is possible to further improve quietness when the construction door 1 is opened and closed.

[0054] Furthermore, in the construction door 1 of this embodiment, the buffer material 30 is provided on the opposing surfaces 10a of the door panels 10 of the two paired doors 2 that face each other in the X direction when the door panels 10 are folded (see FIG. 9). Therefore, when the door panels 10 are folded, it is possible to effectively suppress or prevent noise caused by the door panels 10 colliding with each other. This point will be explained below.

[0055] In the construction door 1 of this embodiment, a connecting pillar 3 (moving pillar 3B) is interposed between the two pairs of doors 2. Therefore, as shown in FIG. 9 , when the door panels 10 are folded, the distance between adjacent pairs of doors 2 is greater than the distance between the two door panels 10 that make up the same pair of doors 2. Furthermore, the folded pair of doors 2 (two door panels 10) tend to swing around the end of the door panel 10 located on the connecting pillar 3 side. As a result, when the door panels 10 are folded, the adjacent pairs of doors 2 tend to collide with each other due to the swinging of the pair of doors 2, and the noise generated during the collision tends to be loud. In contrast, in this embodiment, the cushioning material 30 is provided on the opposing surfaces 10a of the door panels 10 of the two pair of doors 2 that face each other in the X direction, thereby effectively suppressing or preventing the noise generated during the collision.

[0056] Furthermore, in the construction door 1 of this embodiment, the suspender 5 for suspending the moving column 3B (connecting column 3) from the guide rail 4 has rollers 51 that roll in the X direction on the guide rail 4. A plurality of rollers 51 of the suspender 5 are lined up in the X direction. Therefore, when opening and closing the construction door 1, even if the rollers 51 of the suspender 5 rub against the guide rail 4 due to the moving column 3B rotating about the Z direction as its axis, noise generated due to this rubbing can be suppressed. This point will be explained below.

[0057] For example, if the number of rollers 51 of the hanging device 5 in the X direction is only one, the reaction force acting on the one roller 51 due to the load of the moving column 3B and the door panel part 10 connected thereto is large. In other words, the force with which the one roller 51 is pressed against the guide rail 4 due to the load is large. Therefore, the noise generated when the roller 51 rubs against the guide rail 4 becomes large. In contrast, when the number of rollers 51 of the suspending device 5 in the X direction is multiple, it is possible to reduce the force with which each roller 51 is pressed against the guide rail 4 by the load. This makes it possible to reduce the noise generated when the roller 51 rubs against the guide rail 4.

[0058] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be modified as appropriate within the scope of the invention.

[0059] The construction door 1 of the present invention is not limited to being configured by a plurality of door panel parts 10 that are foldably connected, but may be configured by, for example, one or a plurality of door panel parts 10 that are slidable. [Explanation of symbols]

[0060] 1 Construction door 2 Pair of doors 3 Connecting column 4 guide rails 5 Hanging device 10 Door panel 10a,10b Opposite side 11 Door frame 12 Hole plate 13 Rod-shaped member 14 Elastic Body 16 bolts and nuts 20 hinges 30 Cushioning material 51 Laura EV construction elevator EV1 elevator body

Claims

1. A construction door is provided on each floor of a construction elevator to separate the elevator body side from the stage side, a door frame; and a door panel portion having a perforated panel whose peripheral edge is held by the door frame; The door panel portion is disposed adjacent to the perforated plate in the thickness direction, and both ends in the longitudinal direction are held by the door frame, and the middle portion in the longitudinal direction further has a rod-shaped member held by an inner portion of the perforated plate located inside the door frame, A construction door in which the inner portion of the perforated plate is held in place by bolts and nuts at the midpoint of the rod-shaped member.

2. A construction door is provided on each floor of a construction elevator to separate the elevator body side from the stage side, a door frame; and a door panel portion having a perforated panel whose peripheral edge is held by the door frame; The door panel portion is disposed adjacent to the perforated plate in the thickness direction, and both ends in the longitudinal direction are held by the door frame, and the middle portion in the longitudinal direction further has a rod-shaped member held by an inner portion of the perforated plate located inside the door frame, A construction door in which both ends of the rod-shaped member are held in the door frame via an elastically deformable elastic body.

3. 3. The construction door according to claim 1, wherein the inner portion of the perforated plate held by the rod-shaped member is displaced in the plate thickness direction relative to the peripheral portion of the perforated plate held by the door frame.

4. The door panel portions are arranged in a plurality in one direction, The door panel portions adjacent to each other in the one direction are foldably connected, The construction door according to any one of claims 1 to 3, further comprising a cushioning material provided on opposing surfaces of the door panel portions that face each other when the adjacent door panel portions are folded.

5. The door panel portions are arranged in a plurality in one direction along the horizontal direction, The two door panel portions adjacent to each other in one direction constitute a pair of doors that are foldably connected by hinges with a vertical direction as a rotation axis, a plurality of connecting posts provided between each pair of doors arranged in one direction and at both ends of each pair of doors, the connecting posts being rotatably connected to the door panel portion with a rotation axis that is perpendicular to the door panel portion; a guide rail extending horizontally and guiding the plurality of connecting columns so that they can move in the one direction; a plurality of suspenders for suspending the plurality of connecting posts from the guide rails, respectively; the hanging tool has a roller that rolls in the one direction on the guide rail, The construction door according to any one of claims 1 to 4, wherein a plurality of the rollers are arranged in the one direction.

6. A construction elevator comprising: an elevator body; and the construction door according to any one of claims 1 to 5.

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