JP7797150B2 - Construction doors and construction elevators - Google Patents

Description

The present invention relates to a construction elevator used at construction sites and a construction door installed on each floor of the construction elevator.

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 relative to the door frame, thereby improving quietness when the construction door is opened and closed.

Japanese Patent Application Laid-Open No. 2019-055876

However, there are various other causes of noise that occur when construction doors are opened and closed, in addition to rattle between the door frame and the perforated plate. For this reason, there is room for improvement in the quietness of construction doors when they are opened and closed.

The present invention was made in consideration of the above circumstances, and aims to provide a construction door that is quieter when opened and closed, and a construction elevator equipped with the door.

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

With this configuration, the peripheral edge of the perforated plate is held by the door frame, and the inner portion of the perforated plate is held by the rod-shaped member, which prevents the perforated plate from vibrating in its thickness direction when the construction door is opened or closed. This reduces the generation of noise caused by the vibration of the perforated plate when the construction door is opened or closed. This therefore improves quietness when the construction door is opened or closed.

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 edge of the perforated plate held by the door frame.

With this configuration, the perforated plate is held by the door frame and rod-shaped member in a state where it is elastically bent in the thickness direction. This effectively suppresses or prevents 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.

Furthermore, 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.

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 of the holed plate relative to the peripheral edge thereof (the amount of deflection of the holed plate) can be easily adjusted.

Furthermore, in the construction door according to the present invention, both ends of the rod-shaped member may be held in the door frame via an elastically deformable elastic body.

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. This further improves quietness when the construction door is opened or closed.

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

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. This reduces noise caused by door panels colliding with each other, further improving quietness when opening and closing the construction door.

In addition, the construction door according to the present invention includes a pair of doors in which a plurality of the door panels are arranged in one horizontal direction, and two adjacent door panels in the one direction are connected by hinges so as to be foldable with the vertical direction as the axis of rotation; a plurality of connecting posts are provided between each pair of doors arranged in the one direction and at both ends of each pair of doors, and are rotatably connected to the door panels with the vertical direction as the axis of rotation; a guide rail extending horizontally to guide the connecting posts so as to be movable in the one direction; and a plurality of hanging devices that hang the connecting posts from the guide rails, each of which has a roller that rolls in the one direction on the guide rail, and a plurality of rollers may be arranged in the one direction.

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.

The construction elevator of the present invention comprises an elevator body and the construction door.

This invention makes it possible to improve noise reduction when opening and closing construction doors.

FIG. 1 is a front view of a construction door according to one embodiment of the present invention, viewed from the stage side. 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. 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. FIG. 4 is a front view showing the main parts of the construction door of FIGS. FIG. 5 shows the perforated plate in FIGS. 6 is a cross-sectional view taken along line VI-VI in FIG. 4. FIG. 4 is a top view showing the main part of the construction door of FIGS. 1 to 3 in a closed state. FIG. 8 is a top view showing the process of opening the construction door from the state shown in FIG. 7 . FIG. 4 is a top view showing the main part of the construction door of FIGS. 1 to 3 in an open state. FIG. 4 is a schematic perspective view showing a suspender for suspending a movable column (connecting column) from a guide rail in the construction door of FIGS.

An embodiment of the present invention will now be described with reference to FIGS.
2 and 3, the construction elevator EV of this embodiment is used at a construction site 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 sections 10 described later are deployed), 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 sections 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.

As shown in Figures 1 to 3, the construction door 1 comprises multiple 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 form a pair of doors 2 foldably connected by hinges 20. Multiple pairs of doors 2 are lined up in one direction. The construction door 1 of this embodiment further comprises multiple connecting posts 3, guide rails 4, and multiple hanging devices 5.

In the drawings, the X direction indicates the direction in which multiple door panel sections 10 are lined up (the aforementioned direction). In this embodiment, the X direction is 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).

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 through 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.

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 arranged at intervals in the X direction. The horizontal frames 113 each extend in the X direction and are arranged 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 elongated rectangular shape whose height dimension (dimension in the Z direction) is 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 constitute the door frame 11 are not limited to the above example.

As shown in Figure 5, the perforated plate 12 is a plate material having numerous holes 121 penetrating through it in its thickness direction (Y direction). In this embodiment, the perforated plate 12 is a metal plate material formed into a mesh pattern, such as expanded metal. The perforated plate 12 may also be, for example, a punched metal, a metal plate material with numerous through holes formed therein. 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 elongated rectangular shape that corresponds to the opening of the door frame 11 (see Figure 4).

As shown in Figures 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. In other words, 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 portion 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 portion of the perforated plate 12.

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 perforated 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 this 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.

The rod-shaped member 13 is arranged adjacent to the hole plate 12 held by the door frame 11 in the thickness direction (Y direction) of the hole plate 12. That is, 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) with respect to the hole plate 12 (see FIG. 1).
Furthermore, the rod-shaped member 13 is positioned 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 aligned with the long side direction (Z direction) of the opening of the door frame 11.

Furthermore, the rod-shaped member 13 is positioned 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 positioned so that it does not protrude outside either end of the door frame 11 in the thickness direction. Specifically, both longitudinal ends of the rod-shaped member 13 rest on the step surface 11a of the door frame 11 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.

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.

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

A midpoint in the longitudinal direction of the rod-shaped member 13 is held on the inner side of the perforated plate 12 held by the door frame 11. Specifically, a point-like portion of the midpoint in the longitudinal direction of the rod-shaped member 13 is held by the holder 15 on the inner side of the perforated plate 12 that overlaps the rod-shaped member 13. The inner side of the perforated plate 12 held by the rod-shaped member 13 is displaced in the 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 thickness direction.
In this embodiment, there is only one portion (holding portion) of the holder 15 that 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.

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 part 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.

Furthermore, a plate 17 having a larger area than the nut 162 is interposed between the perforated plate 12 and the nut 162 when viewed in the thickness direction of the perforated plate 12. This allows the perforated plate 12 and the rod-shaped member 13 to be stably sandwiched between the bolt and nut 16 even if the size of the hole 121 (see FIG. 5 ) of the perforated 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. Furthermore, the holders 15 that hold the hole plate 12 to the rod-shaped member 13 are not limited to the bolts and nuts 16.

As shown in Figures 1 and 4, two door panel sections 10 configured as described above form a pair of doors 2. In each pair of doors 2, the two door panel sections 10 are connected so that they can be folded around the Z direction as the axis of rotation. These multiple pairs of doors 2 are lined up in the X direction.

As shown in Figures 1 to 4, multiple connecting posts 3 are provided between each pair of doors 2 lined up in the X direction, and at both ends of each pair of doors 2. Each connecting post 3 is rotatably connected to the adjacent door panel 10 with the Z direction as its axis of rotation.

The guide rail 4 extends in the X direction and guides the plurality of 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.

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 pairs of doors 2) can be constructed lightly and simply from metals such as aluminum. For this reason, the support pillars 6 may be constructed, for example, from a combination of single-pipe construction pipes. In this case, the construction door 1 can be easily installed and transported.

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

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.
As shown in Figures 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 Figure 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.

1, 2, and 7, when the construction door 1 of this embodiment is closed, the distance between the multiple connecting posts 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) relative 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.

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 decreases. Specifically, as shown in 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 between 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.

3 and 9, when the construction door 1 is open, the multiple door panels 10 are folded in an accordion-like manner. In this state, the distance between the multiple connecting posts 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 operation of the operation for opening the construction door 1 described above 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.

As described above, regardless of whether the construction door 1 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 position of the hinge 20 (rotation axis) connecting the two door panels 10 and the position of the rotation axis that allows the door panels 10 and connecting column 3 to rotate freely are carefully designed to prevent the door panel 10 from being positioned on the elevator body side RE relative to the guide rail 4. In addition, stoppers 7 (see Figures 7 and 8) are provided on the door panels 10 and connecting column 3 and are sandwiched between adjacent door panels 10 in the X direction and between the door panel 10 and connecting column 3 when the construction door 1 is closed.

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 or sponge.
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.

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, for example.
The cushioning material 30 is also provided on the opposing surfaces 10b (hereinafter referred to as the "other opposing surfaces 10b") of the 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 cushioning material 30 is provided on both of the opposing surfaces 10a (10b) of the two opposing door panels 10, but it may be provided on only one of these two opposing surfaces 10a (10b). Also, the cushioning material 30 may be provided on only one of the opposing surfaces 10a and 10b of the door panel 10.

As explained above, in the construction door 1 of this embodiment, both longitudinal ends of the rod-shaped member 13 are held in the door frame 11, and the middle longitudinal portion of the rod-shaped member 13 is held in the inner part of the perforated plate 12 located inside the door frame 11. This prevents the perforated plate 12 from vibrating in its thickness direction when the construction door 1 is opened or closed. This reduces the generation of noise caused by the vibration of the perforated plate 12 when the construction door 1 is opened or closed. This therefore improves quietness when the construction door 1 is opened or closed.

In addition, with 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 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. In other words, 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 thickness direction. This effectively suppresses or prevents the perforated plate 12 from vibrating in a manner that causes it to bend elastically, even if an external force acts on the perforated plate 12 when the construction door 1 is opened or closed. This further improves quietness when the construction door 1 is opened or closed.

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.

In addition, with the construction door 1 of this embodiment, both ends of the rod-shaped member 13 are held to 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 relative to the door frame 11. This suppresses the generation of noise caused by rattling of the rod-shaped member 13 relative to the door frame 11. Therefore, quietness when opening and closing the construction door 1 can be further improved.

In addition, with the construction door 1 of this embodiment, the rod-shaped members 13 and bolt nuts 16 (retainers 15) are positioned inside the door frame 11 (at the opening) in the thickness direction of the door frame 11 and do not protrude beyond either end of the door frame 11 in the thickness direction. Therefore, even if the door panel 10 is provided with rod-shaped members 13 and bolt nuts 16, in order to open the construction door 1, adjacent door panel 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.

The construction door 1 of this embodiment also includes cushioning material 30 provided on the opposing surfaces 10a (10b) of adjacent door panels 10 that face each other when folded. Therefore, when folding multiple door panels 10 to open the construction door 1, the cushioning material 30 can prevent adjacent door panels 10 from directly colliding with each other. This reduces noise caused by collisions between door panels 10. This further improves quietness when opening and closing the construction door 1.

In addition, in the construction door 1 of this embodiment, cushioning materials 30 are 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 Figure 9). This effectively suppresses or prevents noise caused by the door panels 10 colliding with each other when the door panels 10 are folded. This point will be explained below.

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 multiple 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 are likely to collide with each other due to the swinging of the pair of doors 2, and the noise generated during the collision is likely to be loud. In contrast, in this embodiment, cushioning material 30 is provided on the opposing surfaces 10a of the door panels 10 of the two pairs of doors 2 facing each other in the X direction, effectively suppressing or preventing the noise generated during the collision.

In addition, with the construction door 1 of this embodiment, the hanging device 5 for suspending the movable column 3B (connecting column 3) from the guide rail 4 has rollers 51 that roll in the X direction on the guide rail 4. The rollers 51 of the hanging device 5 are lined up in the X direction. Therefore, even if the rollers 51 of the hanging device 5 rub against the guide rail 4 when the construction door 1 is opened or closed due to the movable column 3B rotating around its axis in the Z direction, noise generated by this rubbing can be suppressed. This point will be explained below.

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 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 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 hanging 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 noise generated when the roller 51 rubs against the guide rail 4.

The above describes an embodiment of the present invention, but the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the invention.

The construction door 1 of the present invention is not limited to being composed of multiple foldably connected door panel sections 10, but may also be composed of, for example, one or more sliding door panel sections 10.

DESCRIPTION OF SYMBOLS 1 Construction door 2 Pair of doors 3 Connecting pillar 4 Guide rail 5 Hanging device 10 Door plate portion 10a, 10b Opposing surface 11 Door frame 12 Holed plate 13 Rod-shaped member 14 Elastic body 16 Bolt nut 20 Hinges 30 Cushioning material 51 Roller EV Construction elevator EV1 Elevator body

Claims (6)

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 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 . 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 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. 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. 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. 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 the one direction and at both ends of the plurality of pairs 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. A construction elevator comprising: an elevator body; and the construction door according to any one of claims 1 to 5 .