JP6243692B2 - Opening and closing device and center pillar fixing device - Google Patents

Description

  The present invention relates to an opening / closing device provided with a middle column fixing device for fixing a lower end of a middle column that supports the opening / closing body so as to be movable in the vertical direction, and a middle column fixing device.

As a shutter device as an opening / closing device installed in an opening with a wide opening (frontage) such as a doorway of a building such as a factory or warehouse, it is provided on the left and right so that the opening can be opened and closed. A plurality of opening / closing bodies provided adjacent to each other and an opening / closing body provided between the opening / closing bodies provided adjacent to each other on the left and right sides can move the side edges of the opening / closing bodies adjacent to each other in the vertical direction. There is known a configuration including a middle pillar that is supported by the middle pillar and a middle pillar fixing device that is installed so as to be embedded in the floor of the opening in order to fix the lower end of the middle pillar.
The middle column includes a fixing means for fixing the lower end of the middle column to the middle column fixing device on the lower end side.
The middle pillar fixing device is formed of a hollow container, and is installed on a floor such as a concrete floor so that the top surface and the floor surface of the top plate of the hollow container are located on the same surface.
As an example of the middle column fixing device, a middle column fixing device having a configuration in which the top surface of the top plate of the hollow container is fixed to be flush with the floor surface is known. In the case of the center column fixing device of the top plate fixing structure, the top plate is formed with a through hole for inserting the fixing means provided at the lower end portion of the center column into the hollow space of the hollow container from the outside of the hollow container. Has been. Then, after the lower end of the middle column is positioned on the top plate of the middle column fixing device, the fixing unit is configured not to move upward by passing the fixing unit through the through hole of the top plate. The lower end is fixed to the middle column fixing device and fixed to the floor (see Patent Document 1).
Further, as another example of the middle column fixing device, the peripheral portion of the top plate of the hollow container and the central side portion other than the peripheral portion of the through hole are constituted by a movable top plate that can be rotated via a hinge, 2. Description of the Related Art There is known a center pole fixing device configured to be set so that a plate surface of a movable top plate is in a state orthogonal to a floor surface and flush with a floor surface. In the case of the middle column fixing device having the movable top plate configuration, the lower end portion of the middle column includes the fixing means and a guide plate provided to be orthogonal to the center line of the middle column. A guide hole for guiding the fixing means is formed. The movable top plate is formed with a movable through hole for allowing the guide plate to penetrate therethrough. Then, the movable top plate is rotated so that the movable through hole approaches the through hole so that the plate surface of the movable top plate is orthogonal to the floor surface, and the guide plate is passed through the movable through hole. After the guide hole is set to be positioned immediately above the through hole, the fixing means is passed through the guide hole and the through hole so that the fixing means does not move upward. It is fixed to the middle pillar fixing device and fixed to the floor (see Patent Document 2 etc.).

Japanese Patent Laid-Open No. 10-317852 Japanese Utility Model Publication No. 58-51356

However, the conventional center pole fixing device is installed on the floor so that the top surface and the floor surface of the top plate are positioned on the same plane, so that a load is easily applied to the top plate, and the load is repeatedly applied to the top plate. There is a possibility that the top plate is deformed by the addition.
The present invention provides an opening / closing device including a center column fixing device having a high effect of preventing deformation of the top plate, and a center column fixing device.

An opening / closing apparatus according to the present invention is provided between each opening / closing body provided adjacent to each other so as to be movable in the vertical direction and capable of opening / closing the opening, and between the opening / closing bodies adjacent to each other. A middle column that supports the side edges of the adjacent opening / closing bodies so as to be movable in the vertical direction, and a middle column fixing device installed on the floor of the opening to fix the lower end of the middle column. In the opened / closed device, the center post fixing device includes a hollow container having a hollow space surrounded by a bottom plate, a side plate, and a top plate component, and the top plate component includes the top plate and the top plate. A ceiling plate provided so as to surround the periphery, a step is formed at the boundary between the top surface of the top plate and the top surface of the top plate periphery plate, and the top surface of the top plate periphery plate is the top plate. than the upper surface of the plate is formed at a position away from the bottom surface of said hollow container, wherein in column fixation device, A pair of edge sides of the top plate peripheral plate facing each other in parallel are separated from a pair of lateral movement restricting pieces bent toward the bottom plate side of the hollow container and a pair of side plates facing the hollow container. And a pair of floating regulating pieces provided to extend in the direction so as to face the top plate, and installed on the floor so that the top surface of the top plate of the hollow container is located below the floor surface. The top plate of the hollow container has a through hole communicating with the hollow space of the hollow container, and the fixing means provided at the lower end portion of the middle column penetrates the through hole from above the top plate to form the hollow The middle pillar is fixed to the floor by being inserted into a space.
Further, the upper surface of the top plate peripheral plate and the floor surface are located on the same plane .
Moreover, the depth dimension of the recessed part which makes the upper surface of the said top plate enclosed by the said top plate surrounding board the bottom face is 10% or more of the length dimension of the rectangular short side which forms the upper end opening edge of the said recessed part. It is characterized by that.
The top plate may include a movable top plate that can rotate.
Further, the movable top plate is formed with a movable through hole through which an engagement plate provided at a lower end portion of the middle pillar is penetrated.
The center pole fixing device according to the present invention is provided between an opening and closing body provided adjacent to each other so as to be movable in the vertical direction and opened and closed, and adjacent to each other. In the middle column fixing device installed on the floor of the opening to fix the lower end of the middle column that supports the side edge of the opening / closing body so as to be movable in the vertical direction, it is surrounded by the bottom plate, the side plate, and the top plate component. A hollow container having a hollow space, and the top plate component includes a top plate provided with a through hole for allowing a fixing means provided at a lower end portion of the middle pillar to penetrate the hollow space of the hollow container; A ceiling plate provided so as to surround the periphery of the top plate, a step is formed at the boundary between the plate surface of the top plate and the plate surface of the top plate periphery plate, and the periphery of the top plate than the plate surface plate surface of the top plate of the plate is formed at a position away from the bottom surface of the hollow vessel, before A pair of lateral movement regulating pieces in which a pair of end edges facing each other in parallel on the top plate peripheral plate are bent toward the bottom plate side of the hollow container, and a direction away from the pair of side plates facing each other of the hollow container And a pair of lifting restriction pieces provided so as to face the top plate .

According to the opening / closing apparatus according to the present invention, the center column fixing device includes a pair of lateral movement restriction pieces in which a pair of end edges facing each other in parallel on the top plate peripheral plate are bent toward the bottom plate side of the hollow container. And a pair of lifting restriction pieces that extend in a direction away from the pair of side plates facing each other of the hollow container so as to face the top plate, and the top surface of the top plate is below the floor surface Since it is installed on the floor so as to be positioned at the position, it becomes difficult to apply a load to the top plate, and it becomes an opening / closing device equipped with a middle column fixing device having a high effect of preventing the top plate from being deformed.
In addition, since the top surface and the floor surface of the top plate surrounding plate are located on the same plane, it is difficult to apply the load of the vehicle to the top plate, and the middle column fixing device having a high effect of preventing the top plate from being deformed is provided. It becomes a switchgear.
In addition, if the depth dimension of the recess with the top surface of the top plate surrounded by the top plate peripheral plate as the bottom surface is 10% or more of the length dimension of the short side of the rectangle forming the upper end opening edge of the recess, For example, the outer diameter of the tire is 405 mm, the width of the tire is 105 mm, the length of the short side of the rectangle that forms the upper end opening edge of the recess is 55 mm, and the long side of the rectangle that forms the upper end opening edge of the recess When the length dimension is 110 mm and the recess depth dimension is 5.5 mm, when the tire passes over the recess, both side portions in the tire width direction are not in contact with the upper surface of the top plate peripheral plate, and the tire In the state where two different locations of the tread surface in the tire circumferential direction are in contact with the opposite long side edges of the upper end opening edge of the recess, the tread surface of the tire entering the recess can be prevented from contacting the bottom surface of the recess. High deformation prevention effect A closing device provided with a column fixation device.
Moreover, since the top plate is provided with a rotatable movable top plate, the top plate is an opening / closing device provided with a wind-resistant middle pillar fixing device that is highly effective in preventing deformation of the top plate.
In addition, since the movable top plate is formed with a movable through-hole that allows the engagement plate provided at the lower end of the middle column to pass therethrough, it is equipped with a wind-resistant type middle column fixing device that has a high effect of preventing the top plate from being deformed. It becomes a switchgear.
According to the center pole fixing device according to the present invention, a step is formed at the boundary between the plate surface of the top plate and the plate surface of the top plate surrounding plate, and the plate surface of the top plate surrounding plate is more than the plate surface of the top plate. A pair of lateral movement restricting pieces formed at positions away from the bottom surface of the hollow container and facing in parallel with each other on the top plate peripheral plate and bent toward the bottom plate side of the hollow container; Since it has a pair of lifting control pieces provided to extend away from the pair of side plates facing each other and to face the top plate, the top surface and the floor surface of the plate forming the top plate peripheral plate are It is located on the same surface and installed on the floor so that the top surface of the top plate is located below the top surface and the floor surface of the plate forming the top plate surrounding plate. A high center column fixing device is obtained.

The perspective view of a shutter apparatus. The perspective view of the middle pillar fixing device installed so that it might be embedded in a floor. 3A is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 3B is a cross-sectional view taken along the line BB in FIG. 4A is a plan view (top view) of the center post fixing device, FIG. 4B is a front view of the center post fixing device, and FIG. 4C is a side view of the center post fixing device. The perspective view which shows the state which engaged the through-hole of the movable top plate, and the engagement board, and fixed the middle pillar to the middle pillar fixing device. Sectional drawing which shows the procedure which engages the through-hole of a movable top plate, and an engagement board, and fixes a middle pillar to a middle pillar fixing device. The perspective view which shows the state which fixed the center column to the center column fixing apparatus, without engaging the through-hole and engagement plate of a movable top plate. Sectional drawing which shows the procedure which fixes a center pillar to a center pillar fixing device, without engaging the through-hole and engagement plate of a movable top plate.

  As shown in FIG. 1, a shutter device 1 as an opening / closing device according to an embodiment includes a shutter case (hereinafter abbreviated as a case) 2 as an opening / closing body housing case, and an opening 13 such as a doorway of a building such as a factory or a warehouse. Left and right shutter curtains 4A and 4B, left and right guide rails 5A and 5B, left and right shafts 6A and 6B, a middle column 50, and a middle column fixing device 60 are provided.

A schematic configuration of the shutter device 1 is as follows.
The case 2 is formed of a box-like body that can accommodate a shaft and a shutter curtain wound around the shaft, and is fixed to a housing 14 of the building positioned above the opening 13 of the building, such as a fastener such as a bolt or welding. It is fixed by fixing means.
A left guide rail 5A disposed on the left edge side of the opening 13 and a right guide rail 5B disposed on the right edge side of the opening 13 are provided.
The middle pillar 50 is disposed at the left and right central positions of the opening 13. The lower end 50 </ b> A of the middle column 50 is fixed to the floor 9 by the middle column fixing device 60. In addition, as an attachment structure of the upper end of the middle pillar 50, it is attached to the attachment / detachment part outside the figure provided in case 2, and it is attached to the rail outside the figure provided in case 2 so that movement is possible. There are configurations.
Since the middle pillar 50 is provided at the center position on the left and right sides of the opening 13 so as to extend in the vertical direction, the opening 13 is provided with the left guide rail 5 </ b> A and the middle pillar 50 provided on the left edge side of the opening 13. The left opening 13 </ b> A between the right guide rail 5 </ b> B and the right opening 13 </ b> B between the middle pillar 50 provided on the right edge side of the opening 13.
As the shutter curtain, a left shutter curtain 4A for opening and closing the left opening 13A and a right shutter curtain 4B for opening and closing the right opening 13B are provided.
As the shaft, the left shutter curtain 4A can be wound up and fed out so that the left shutter curtain 4A can be wound up and fed out, and the upper end side of the left shutter curtain 4A is connected via a suspension base 12. The right shutter curtain 4B is provided with a right shaft 6B connected to the upper end side of the right shutter curtain 4B via a suspension base 12.

The left guide rail 5A is a member for guiding the left edge of the left shutter curtain 4A so as to be movable in the vertical direction, and includes a guide groove 5a extending in the vertical direction of the opening 13 to guide the left edge. .
The right guide rail 5B is a member for guiding the right edge of the right shutter curtain 4B so as to be movable in the vertical direction, and includes a guide groove 5b extending in the vertical direction of the opening 13 to guide the right edge. .
The left guide rail 5A and the right guide rail 5B are fixed to the housing 14 via fixing members (not shown).

The middle pillar 50 is provided between the left shutter curtain 4A and the right shutter curtain 4B which are provided so as to be movable in the vertical direction and are adjacent to each other on the left and right so that the opening 13 can be opened and closed. This is a column having a function as a guide rail that supports the right edge of the adjacent left shutter curtain 4A and the left edge of the right shutter curtain 4B so as to be movable in the vertical direction.
That is, the middle column 50 is arranged side by side so that the opening 13 can be opened and closed in the vertical direction, and is disposed between the left shutter curtain 4A and the right shutter curtain 4B adjacent to each other, and the left and right shutter curtains are arranged. 4A; 4B; a guide groove 5c; 5d that functions as a guide rail that guides adjacent side edges of 4B in the opening and closing direction.
The middle pillar 50 is configured, for example, by joining the back surfaces of the pillars having a C-shaped cross section (surfaces facing the opening serving as the entrance to the guide groove) by welding or the like.

Each of the left and right shutter curtains 4A; 4B includes a slat 10, a drainer 11, and a suspension base 12, and is formed of a metal such as steel.
The slat 10 is formed by a plurality of slat members 10a. The slat member 10a is formed by a long member that is long in the direction along the central axis 6a; 6a of the shaft 6A; 6B. The slats 10 have both longitudinal positions of adjacent slat members 10a such that the plurality of slat members 10a are continuous in a direction orthogonal to the longitudinal direction of the slat members 10a (the direction along the long side of the slat members 10a). And the long sides are connected to each other by an engaging portion (not shown) and formed into a rectangular plate shape that can be bent at the connecting portion.
The drainer 11 is connected to the long side of the slat member 10 a located at one end (the lower end of the slat 10) in the direction perpendicular to the longitudinal direction of the slat member 10 a in the slat 10, and the suspension base 12 is the longitudinal length of the slat member 10 a in the slat 10. It connects with the long side of the slat member 10a located in the other end (upper end of the slat 10) of the direction orthogonal to a direction.
The drainer 11 is formed of a long member that is long in the direction along the central axis 6a; 6a of the shaft 6A; 6B and has a cross-sectional shape orthogonal to the longitudinal direction (the direction along the long side of the drainer 11). The portion corresponding to the lateral side of the inverted T-shaped cross section located at the lower end is the horizontal portion 11b. The length in the longitudinal direction of the horizontal portion 11b is shorter than the length in the longitudinal direction of the slat member 10a, and the center position in the longitudinal direction of the drainer 11 and the center position in the longitudinal direction of the slat member 10a are aligned to form an inverted T-shape of the drainer 11. The long side of the vertical portion 11a and the long side of the slat member 10a located at one end of the slat 10 are connected to each other by an engaging portion (not shown).
The suspension base 12 is a connecting member provided intermittently on the long side along the long side of the slat member 10 a located at the other end of the slat 10, and is fixed to the housing 14 located above the opening 13. The left and right shutter curtains 4A; 4B in the case 2 are connected to the left and right shafts 6A; 6B via outlet holes (not shown).

The left and right shafts 6A; 6B are installed in the case 2 so as to be individually rotatable about the central axes 6a; 6a of the shafts 6A; 6B. The left and right shutter curtains 4A; 4B are the left and right shafts 6A; It can be individually wound and unwound by rotation of 6B.
The left and right shutter curtains 4A and 4B are opened and closed by installing a spring (not shown) on the shaft so that the balance between the repulsive force of the spring and the weight of the shutter curtain is maintained. A system configured to manually open and close the curtains 4A; 4B, or a system configured to open and close the left and right shutter curtains 4A; 4B by rotating the shaft forward and backward using a drive source such as a motor. Either may be sufficient.

The middle column fixing device 60 is a device for fixing the lower end 50A of the middle column 50 to the floor 9 as shown in FIG. 1, and includes a hollow container having a hollow space 61A as shown in FIG. 2; FIG. It is.
The middle column fixing device 60 is, for example, an upper portion surrounded by a rectangular bottom plate 62, side plates 63; 63... Provided so as to rise from the four side edges of the bottom plate 62, and a bottom plate 62 and side plates 63; Is provided with an opening space and a top plate component 64 connected to the upper ends of the side plates 63; 63... So as to cover the upper opening of the space, and the bottom plate 62, the side plates 63; 63. And a hollow container having a hollow space 61A surrounded by.
The top plate constituting unit 64 includes a top plate 65 and a top plate surrounding plate 66 provided so as to surround the top plate 65.
A step is formed at the boundary between the plate surface serving as the top surface 68 of the top plate 65 and the plate surface serving as the top surface 67 of the top plate surrounding plate 66, and the top surface 67 of the top plate surrounding plate 66 is more than the top surface 68 of the top plate 65. It is formed at a position away from the bottom surface of the hollow container.
The top plate component 64 may have a configuration in which a plate forming the top plate 65 formed separately and a plate forming the top plate surrounding plate 66 are joined by welding or the like. The top plate 65 and the top plate surrounding plate 66 may be formed by processing a single plate.

In the middle column fixing device 60, an upper surface 67 (hereinafter referred to as an upper surface 67 of the top plate surrounding plate 66) which is one plate surface of the plate forming the top plate surrounding plate 66 and the floor surface 9a are positioned on the same plane. In addition, an upper surface 68 (hereinafter, referred to as an upper surface 68 of the top plate 65), which is one plate surface of the plate forming the top plate 65, is positioned below the upper surface 67 of the top plate peripheral plate 66 and the floor surface 9a. As described above, the bottom plate 62 and the side plates 63; 63... Are embedded in the floor 9 such as a concrete floor and fixedly installed on the floor 9.
That is, a step is provided between the top surface 67 of the top plate peripheral plate 66 and the top surface 68 of the top plate 65, so that the top surface of the middle pillar fixing device 60 is surrounded by the top plate peripheral plate 66. The middle pillar fixing device is configured to include a concave portion 71 having a bottom surface of the top surface 68 of the middle pillar fixing device 60 so that the top surface 67 of the top plate peripheral plate 66 and the floor surface 9a of the middle pillar fixing device 60 are located on the same plane. Since 60 is embedded in the floor 9, a tire of a vehicle passing over the top plate 65, for example, a tread surface 69a of a steered wheel 69 of a forklift is configured not to contact the top plate 65 (FIG. 3B). )reference).

For example, the case where the recessed part 71 is formed in the recessed part provided with the rectangular parallelepiped recessed space is demonstrated to an example.
The tire constituting the steered wheel 69 of the forklift has the length dimension of the short side of the rectangle forming the upper end opening edge 71a of the recess 71 and the length dimension of the long side of the rectangle forming the upper end opening edge 71a of the recess 71. When the steering wheel 69 passes over the recess 71, both side portions in the tire width direction of the tread surface 69a of the steering wheel 69 are in contact with the upper surface 67 of the top plate peripheral plate 66. In this case, the depth dimension of the recess 71 is determined by taking into account the curvature along the tire width direction of the tread surface 69a of the steered wheel 69, and the tread surface at the center in the tire width direction of the steered wheel 69 passing over the recess 71. What is necessary is just to set to the predetermined | prescribed depth (in other words, the downward position of predetermined amount) 69a does not contact the bottom face 71A of the recessed part 71. FIG.

  The length dimension of the short side of the rectangle forming the upper end opening edge 71a of the recess 71 and the length dimension of the long side of the rectangle forming the upper end opening edge 71a of the recess 71 are defined as the tire width of the steered wheel 69 of the forklift. When the length is longer than the dimension, it is assumed that both side portions of the tread surface 69a of the steering wheel 69 in the tire width direction do not contact the upper surface 67 of the top plate peripheral plate 66 when the steering wheel 69 passes over the recess 71. The In this case, the depth of the recess 71 takes into account the curvature along the tire circumferential direction of the tread surface 69 a of the steered wheel 69, and the tread surface 69 a in the center in the tire width direction of the steered wheel 69 contacts the bottom surface 71 A of the recess 71. The depth should not be set. That is, in this case, as shown in FIG. 3B, when the steering wheel 69 passes over the recess 71, two different points 69c; 69d in the tire circumferential direction of the tread surface 69a of the steering wheel 69 are the upper end opening of the recess 71. If the depth of the recess 71 is set so that the tread surface 69a of the steering wheel 69 entering the recess 71 does not contact the bottom surface 71A of the recess 71 in a state where the edges 71a are in contact with the long side edges 71c; Good.

For example, when the outer diameter of the tire to be the steering wheel 69 is 405 mm and the width of the tire is 105 mm, the length of the short side of the rectangle forming the upper end opening edge 71a of the recess 71 is 55 mm, and the upper end of the recess 71 is The length of the long side of the rectangle forming the opening edge 71a is 110 mm, and the depth of the recess 71 is 5.5 mm.
In this case, since the length dimension of the long side of the rectangle forming the upper end opening edge 71a of the recess 71 is greater than the width dimension of the tire, the tire width direction of the steering wheel 69 when the steering wheel 69 passes over the recess 71 There is a possibility that both side portions of the top plate 67 do not contact the upper surface 67 of the top plate peripheral plate 66. Therefore, in this case, as shown in FIG. 3 (b), when the steering wheel 69 passes over the recess 71, the tires of the steering wheel 69 on the long side edges 71c; In the state where two different points 69c; 69d of the tread surface 69a in the tire circumferential direction are in contact, the tread surface 69a of the steered wheel 69 entering the recess 71 does not contact the bottom surface 71A of the recess 71. The depth dimension of the recess 71 is set in consideration of the curvature of the direction.
In addition, it is preferable that the depth dimension of the recessed part 71 shall be 10% or more of the length dimension of the short side of the rectangle which forms the upper end opening edge 71a of the recessed part 71. FIG.

The top plate 65 that forms the bottom plate of the recess 71 includes a peripheral side top plate 72 and a movable top plate 73.
The peripheral top plate 72 is formed by the peripheral portion of the bottom plate of the concave portion 71, and the movable top plate 73 is formed by an inner portion surrounded by the peripheral side top plate 72 in the bottom plate of the concave portion 71.
For example, when the outer shape of the bottom plate (top plate 65) of the recess 71 is formed in a rectangular shape, the peripheral side top plate 72 is formed by a rectangular frame-like plate that forms the peripheral portion of the bottom plate of the recess 71, and the movable top plate 73 is formed of a rectangular plate surrounded by a rectangular frame-shaped peripheral side top plate 72 in the bottom plate of the recess 71.

More specifically, as shown in FIG. 4A, a rectangular frame-shaped peripheral side top plate 72 has a central side of one long side edge side portion of the rectangular bottom plate (top plate 65) of the recess 71, The rectangular bottom plate of the recess 71 is formed so as to protrude toward the other long side, and is formed into a rectangular plate portion 74 having a long shape in the direction along the other long side. Is formed with a through hole 75 penetrating the rectangular plate portion 74.
In addition, the movable top plate 73 is formed by a portion excluding the rectangular plate portion 74 that is a portion on one long side edge side of the bottom plate of the recess 71 and the peripheral portion of the bottom plate of the recess 71. A movable through hole 76 is formed in a portion of the rectangular bottom plate of the recess 71 on the other long side edge side of the near side movable top plate 73.

The movable top plate 73 is configured to be rotatable through hinges 77 and 77 formed on both short sides of the rectangle. The hinge 77 is, for example, a rotation support hole 78; 78 formed in the side plate 63; 63 corresponding to both of the rectangular short sides of the movable top plate 73, and the rectangular short side of the movable top plate 73. The rotation center shaft body 79 is provided, the rotation center shaft body 79 is rotatably provided in the rotation support hole 78, and the movable top plate 73 has the center axis of the rotation center shaft body 79 as the rotation center. It is configured to be rotatable (see FIG. 3A).
That is, the movable top plate 73 is configured such that a central side portion other than the peripheral portion of the top plate 65 and the peripheral portion of the fixed through hole 75 can be rotated via the hinge 77.
Further, as shown in FIGS. 2 to 4, a pair of lateral movement restricting pieces 80; 80 in which a pair of end edges facing each other in parallel in the top plate peripheral plate 66 are bent toward the bottom plate 62 side, A pair of lifting restricting pieces 81; 81 are provided so as to extend away from the pair of opposing side plates and face the peripheral side top plate 72.

Since the left shutter curtain 4A and the right shutter curtain 4B are installed side by side so as to be able to open and close the opening 13 in the vertical direction, the middle pillar fixing device 60 is The bottom plate 62 and the side plates 63; 63... Are on the floor 9 such as a concrete floor so that the long side of the rectangular bottom plate (top plate 65) of the recess 71 extends along the left-right direction of the opening 13. By being embedded and fixedly installed on the floor 9, the vehicle passes over the recess 71 from the direction intersecting the long side of the top plate 65. Therefore, when the long side of the rectangular bottom surface 71A (the top surface 68 of the top plate 65) of the concave portion 71 of the center post fixing device 60 is extended along the left-right direction of the opening portion 13 in this way, By appropriately setting the depth dimension of the recess 71 in consideration of the curvature of the tire of the steering wheel 69 in the circumferential direction, the tread surface 69a of the steering wheel 69 that enters the recess 71 becomes the bottom surface 71A of the recess 71 (the top plate 65 of the top plate 65). It becomes difficult to contact the upper surface 68), and the effect of the present invention can be obtained effectively.
In the present invention, the “floor surface 9a” is an expression for the sake of convenience for explanation, and is not only a normal floor surface but also a surface located below the opening 13 such as a concrete surface or the ground. The material and members of the floor 9 and the floor surface 9a are also arbitrary.
Furthermore, in the present invention, “does not contact” includes not only actual contact but also means that contact may be made to the extent that there is no problem in use, such as a load applied to the top plate 65 is rare. It is out.

A fixing means 100A and an engaging means 100B are provided at the lower end of the middle pillar 50.
The fixing means 100 </ b> A includes an insertion / removal member 101 that can enter and exit the hollow space 61 </ b> A via the through hole 75, an operation part 102 for the insertion / removal member, and a movement restriction means 103 for the insertion / removal member 101.
The engaging means 100B is formed in the engaging plate 110 so that the engaging plate 110 penetrating the through hole of the movable top plate rotated so as to be orthogonal to the floor surface and the insertion / removal member 101 can penetrate. Through-hole 120.

A method for fixing the lower end 50 </ b> A of the middle column 50 to the middle column fixing device 60 will be described.
After the left and right shutter curtains 4 </ b>A; 4 </ b> B are wound around the left and right shafts 6 </ b>A; 6 </ b> B, the through holes 76 of the movable top plate 73 penetrate the peripheral side top plate 72 as shown in FIG. The movable top plate 73 is rotated so as to approach the hole 75 and set so that the plate surface of the movable top plate 73 is orthogonal to the floor surface 9a. 6 (a): As shown in FIG. 6 (b), the engagement plate 110 provided at the lower end portion of the middle column 50 is passed through the through hole 76 of the movable top plate 73 so that the through hole 120 of the engagement plate 110 is on the peripheral side. After setting so as to be positioned directly above the through hole 75 of the top plate 72, the operation unit 102 is operated so that the insertion / removal member 101 is inserted into the through hole 120 of the engagement plate 110 and the through hole 75 of the peripheral side top plate 72. As shown in FIG. 5, the middle pillar 50 is fixed to the middle pillar fixing device 60 so that the middle pillar 50 does not move in the horizontal direction.

  Further, when the engaging means 100B is not used, after the left and right shutter curtains 4A; 4B are wound around the left and right shafts 6A; 6B, as shown in FIG. 8 is set so that the through-hole 120 is positioned directly above the through-hole 75 of the peripheral-side top plate 72, and then the operation unit 102 is operated, as shown in FIG. By passing through the through hole 120 of the engagement plate 110 and the through hole 75 of the peripheral side top plate 72 and being inserted into the hollow space 61A, as shown in FIG. 7, the middle column 50 extends horizontally on the floor surface 9a. The middle pillar 50 is fixed to the middle pillar fixing device 60 so as not to move.

  According to the shutter device 1 of the embodiment, the top plate 65 of the middle pillar fixing device 60 installed so as to be embedded in the floor 9 below the opening 13 is positioned below the floor surface 9 a of the floor 9. Since it is comprised, the tread of the tire of the vehicle passing over the top plate 65 is difficult to contact the top plate 65, and the load of the vehicle is difficult to be applied to the top plate 65, so that the top plate 65 is difficult to deform.

  In particular, the dimensions of the upper end opening edge 71a of the recess 71 with the top surface 68 of the top plate 65 surrounded by the top plate peripheral plate 66 as the bottom surface 71A so that the tread surface 69a of the steered wheel 69 of the forklift does not contact the top plate 65, Since the depth dimension of the recess 71 is set, the bottom surface 71A of the recess 71 (when the steered wheel 69 having a smaller tire diameter and a narrower tire width than the tire such as a truck or a passenger car passes through the recess 71, Contact with the upper surface 68) of the top plate 65 can be prevented, and deformation of the top plate 65 can be prevented.

  In the conventional center pole fixing device, the top plate of the center column fixing device is installed on the floor so that the top surface of the top plate and the floor surface are on the same plane, so the vehicle tire passes over the top plate For example, the tire tread comes into contact with the top surface of the top plate and a vehicle load is applied to the top plate.Therefore, the phenomenon that the vehicle tire passes over the top plate is repeated, so that the top plate is easily deformed. When the plate is deformed, there is a possibility that the position of the through hole formed in the top plate is shifted, or the movable top plate is difficult to move, and the center pillar fixing device cannot be used. According to the first aspect, it is possible to provide the middle column fixing device 60 having a high deformation preventing effect on the top plate 65.

  In addition, although embodiment demonstrated the center pole fixing apparatus of the movable top plate structure called a wind-resistant type, the structure of this invention is applicable even if it is a middle pillar fixing apparatus of a structure which is not equipped with a movable top plate. It is.

Further, the embodiment includes a top plate 65 and a top plate peripheral plate 66 provided so as to surround the periphery of the top plate 65, and between the top surface 67 of the top plate peripheral plate 66 and the top surface 68 of the top plate 65. Is used so that the upper surface 67 of the top plate peripheral plate 66 and the floor surface 9a of the center column fixing device 60 are located on the same plane. Although the fixing device 60 is an opening / closing device configured to be installed on the floor 9, the top surface of the top plate is lower than the floor surface by using a center pillar fixing device in which a through hole is formed in the top plate of the hollow container. The opening / closing device may be of any configuration that is installed on the floor so as to be located in the center.
Moreover, the upper surface 68 of the top plate 65 positioned above the portion corresponding to the hollow space 61A only needs to be positioned below the floor surface 9a, and is a flat surface or a surface provided with a protruding portion protruding upward. Or the surface provided with the recessed part dented below may be sufficient.
For example, if the top surface 68 located on the center side of the recess 71 on the top surface 68 of the top plate 65 is raised above the other portions and positioned above the other portions, The strength can be improved, and the top plate 65 becomes difficult to deform. Further, if the upper surface 68 located on the center side of the recess 71 on the upper surface 68 of the top plate 65 is configured to be recessed below the other portions and positioned below the other portions, Since the contact with the top plate 65 can be further prevented and the load of the vehicle is hardly applied by the top plate 65, the top plate 65 is hardly deformed.

  Further, when the opening / closing body of the opening / closing device to which the present invention is applied is a shutter curtain, the configuration mode is not limited to a mode in which a plurality of so-called slats are arranged in the vertical direction, but also a pipe, a panel, a sheet-like object or A shutter curtain having an aspect in which a single or a plurality of net-like objects are continuously provided, or a shutter curtain in which slats, panels, pipes, sheet-like objects, and net-like objects are appropriately combined may be used. The present invention can also be applied to a so-called overhead type shutter curtain.

  The present invention can also be applied to an opening / closing device such as a blind, a roll screen device, and a smoke proof curtain provided with a guide rail, the opening / closing body being guided by the guide rail.

  DESCRIPTION OF SYMBOLS 1 Shutter device (opening-closing device), 4A; 4B Shutter curtain (opening-closing body), 9 floor, 9a Floor surface, 13 opening part, 50 center pillar, 60 center pillar fixing device, 65 top plate.

Claims (6)

Each opening / closing body provided so as to be movable in the vertical direction and adjacent to each other so that the opening can be opened / closed, and each opening / closing body disposed between the opening / closing bodies adjacent to each other and adjacent to each other In the opening and closing device comprising a middle column that supports the side edge of the middle column movably in the vertical direction, and a middle column fixing device installed on the floor of the opening to fix the lower end of the middle column,
The middle pillar fixing device includes a hollow container having a hollow space surrounded by a bottom plate, a side plate, and a top plate component ,
The top plate component comprises a top plate and a top plate peripheral plate provided so as to surround the top plate,
A step is formed at the boundary between the top surface of the top plate and the top surface of the top plate peripheral plate, and the top surface of the top plate peripheral plate is formed at a position farther from the bottom surface of the hollow container than the top surface of the top plate. And
The middle column fixing device includes a pair of lateral movement restriction pieces in which a pair of end edges facing each other in parallel in the top plate peripheral plate are bent toward a bottom plate side of the hollow container, and the hollow container facing each other. And a pair of lifting restricting pieces provided to extend away from the pair of side plates to face the top plate, and the top surface of the top plate of the hollow container is positioned below the floor surface Installed on the floor as
The top plate of the hollow container comprises a through hole communicating with the hollow space of the hollow container,
A fixing means provided at a lower end portion of the middle column penetrates the through hole from above the top plate and is inserted into the hollow space, whereby the middle column is fixed to the floor. Switchgear. 2. The switchgear according to claim 1, wherein an upper surface of the top plate peripheral plate and the floor surface are located on the same plane .   The depth dimension of the recess having the top surface of the top plate surrounded by the top plate peripheral plate as the bottom surface is 10% or more of the length dimension of the short side of the rectangle forming the upper end opening edge of the recess. The switchgear according to claim 1 or 2, wherein the switchgear is characterized.   The opening / closing device according to any one of claims 1 to 3, wherein the top plate includes a movable top plate that can rotate.   The opening / closing apparatus according to claim 4, wherein the movable top plate is formed with a movable through hole through which an engagement plate provided at a lower end portion of the middle pillar is passed. The side edge of each opening / closing body adjacent to each other is arranged between the opening / closing body provided adjacent to each other so as to be movable in the vertical direction and the opening can be opened / closed. In the middle pillar fixing device installed on the floor of the opening to fix the lower end of the middle pillar that supports it,
A hollow container having a hollow space surrounded by a bottom plate, a side plate, and a top plate component ,
The top plate constituting portion is provided so as to surround a top plate provided with a through hole for allowing a fixing means provided at a lower end portion of the middle pillar to penetrate the hollow space of the hollow container, and the periphery of the top plate. Provided with a top plate peripheral plate,
A step is formed at the boundary between the plate surface of the top plate and the plate surface of the top plate peripheral plate, and the plate surface of the top plate peripheral plate is further away from the bottom surface of the hollow container than the plate surface of the top plate. Formed in position ,
A pair of lateral movement restriction pieces in which a pair of edge sides facing each other in parallel in the top plate peripheral plate are bent toward the bottom plate side of the hollow container,
A middle column fixing device , comprising: a pair of lifting restricting pieces provided to extend away from a pair of side plates opposed to each other of the hollow container so as to face the top plate .

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