Center pillar fixing device

Abstract

To provide a center pillar fixing device capable of preventing entry of dust or the like inside through a hole for receiving a rod.SOLUTION: This center pillar fixing device comprises: a recess opened in an upper part; a plate 8 detachably provided at the upper end of the recess flush with a floor surface FL and having a first lock hole 80 and a second lock hole 81 formed to receive a center pillar fixing rod; cylindrical bodies 9 respectively positioned directly below the first lock hole and the second lock hole and fixed to the lower surface of the plate to be suspended downwardly; lid bodies 10 provided in the cylindrical bodies; and coil springs 11 provided in the cylindrical bodies and serving as elastic members to support the lid bodies so as to bias the lid bodies upward. When a center pillar is not fixed, the first and second lock holes are each sealed by bringing the lid bodies 10 into contact with the lower surface of the plate by means of the push-up forces of the coil springs. The plate, and the cylindrical body provided with the lid body and the coil spring are formed into a unit, and the unit is detachable from the recess.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a center pillar fixing device. [Background technology]

[0002] A center post is used when multiple shutters are used to open and close a large opening. The center post has a guide on the side to guide the end of the shutter curtain, and the rod of the lifting and lowering metal fittings installed at the lower end of the facing part is dropped into a center post fixing tray buried in a specified position in the ground, thereby fixing the center post at a specified position in the width direction of the opening (Patent Document 1).

[0003] Since such a center column fixing tray has a hole for receiving the rod, over time, if debris gets in through the hole and accumulates at the bottom, it may hinder the rod's downward movement and cause the center column to become poorly fixed. [Patent Document 1] Patent Publication No. 2022-55258 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to prevent as much as possible dust from entering the interior of a center pillar fixing device through a hole that receives a rod. [Means for solving the problem]

[0005] The technical means adopted in the present invention to solve such problems are as follows: A recess located within the floor surface and having an open upper portion; a plate that is detachably attached to an upper end of the recess so as to be substantially flush with the floor surface and has a locking hole formed therein for receiving a center column fixing rod; a cylindrical body that is located directly below the engagement hole and is fixed to the lower surface of the plate in a hanging manner; A lid provided inside the cylindrical body; an elastic member provided within the cylindrical body and supporting the lid body from below so as to urge the lid body upward; Equipped with When the center column is not fixed, the locking hole is closed by the cover abutting against the lower surface of the plate, When the center column is fixed, the center column fixing rod pushes the cover body and the elastic member downward to engage with the engagement hole, The plate, the lid, and the cylindrical body including the elastic member form a unit, The unit is detachable from the recess. This is the center column fixing device. In this specification, the tubular body is not necessarily limited to a cylindrical body, but may be a square pipe-like tubular body.

[0006] In one embodiment, the bottom of the cylindrical body is located above the bottom surface of the recess, The cylindrical body has a hole formed in the bottom. This hole has the functions of draining water and removing debris.

[0007] In one embodiment, in the unit, the plate is rectangular, A first locking hole for receiving a first center post fixing rod is formed on one end side of the plate in the longitudinal direction, and a second locking hole for receiving a second center post fixing rod is formed on the other end side of the plate in the longitudinal direction, A first cylindrical body is fixed to the underside of one longitudinal end of the plate, positioned directly below the first engagement hole, and a second cylindrical body is fixed to the underside of the other longitudinal end of the plate, positioned directly below the second engagement hole.

[0008] In one embodiment, the recess includes a side wall, a bottom surface, and a box-shaped body having an open top, a horizontal edge portion at the upper end of the box-shaped body; a mounting portion is formed between the horizontal edge portion and an upper end of the side wall, The edge of the plate is placed on the placement portion. In one embodiment, the recessed portion includes a box-shaped body having an open top, opposing first and second walls, opposing third and fourth walls, and a bottom surface; and four horizontal edges around the top of the box-shaped body. the horizontal edge portion comprises a first short side, a second short side, a first long side, and a second long side; a first mounting portion is formed between an upper end of the first wall and the first short side, and a second mounting portion is formed between an upper end of the second wall and the second short side, One end side in the longitudinal direction of the plate is placed on the first placement portion, and the other end side in the longitudinal direction is placed on the second placement portion.

[0009] In one embodiment, an intermediate placement portion is formed in the recess so as to bridge a longitudinal intermediate portion between the first long side and the second long side, The plate has a longitudinal intermediate portion removably fixed to the intermediate support portion by a screw.

[0010] In one embodiment, a side surface of the first cylindrical body is in contact with or adjacent to the first wall and the third wall, The side surface of the second cylindrical body abuts against or is adjacent to the second wall and the third wall. Effect of the Invention

[0011] In the present invention, when the center column is not fixed, the locking hole that receives the center column fixing rod is blocked from below by a cover body, preventing debris from entering through the locking hole and reducing the risk of the center column failing to be fixed due to debris accumulation. In addition, in the center column fixing device, the plate and the cylindrical body equipped with the lid and elastic member form a unit, and the unit is detachable from the recess. Therefore, by removing the unit from the recess (floor surface), maintenance (including removal of fine debris from inside the cylindrical body and malfunction of the lid due to aging, etc.) can be performed.

[0012] In the case of a cylindrical body with a hole formed in the bottom, even if dust or the like gets into the internal space of the cylindrical body, it is discharged downward from the hole in the bottom, preventing the dust from accumulating in the internal space. The discharged dust accumulates in the bottom of the recess, but by removing the unit, the upper part of the recess becomes open, making it possible to remove the dust. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a front view of the dual lightweight shutter according to the embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the twin lightweight shutter according to the embodiment. [Diagram 3] FIG. 2 is a partial enlarged view of the lower end portion of the center pillar in FIG. [Figure 4] 1A and 1B are a plan view and cross-sectional views from two different directions of a center pillar fixing device according to the present embodiment. [Diagram 5] FIG. 4 is a partial enlarged view of the lower portion of FIG. [Figure 6] FIG. 2 is a diagram showing a unit (consisting of a plate and a cylindrical body) that constitutes the center pillar fixing device of this embodiment. [Figure 7] 1 is a diagram showing a recess that constitutes the center pillar fixing device according to the present embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] [A] Dual-mounted lightweight shutter The shutter device according to this embodiment is a lightweight double shutter. FIG. 1 is a front view of a double-unit lightweight shutter, which opens and closes a building opening with a first shutter curtain 1 and a second shutter curtain 2. A first guide rail 3 and a second guide rail 4 are erected at both ends of the building opening in the width direction, and a center post 5 is provided in the center of the building opening in the width direction. The center post 5 has a first facing part 50, a second facing part 51, and left and right side parts 52, and a guide groove 53 is formed in each side part 52 in the height direction. A lifting and dropping metal fitting 6 is provided below the first facing part 50 of the center post 5. A center post fixing device that fixes the lower end part of the center post 5 using the lifting and dropping metal fitting 6 is buried in a predetermined part of the floor surface or ground FL.

[0015] The lifting / dropping fitting 6 includes a lifting / dropping rod formed in an inverted U shape by left and right center column fixing rods 60, 60 and an upper gripping portion 61, and a case 62 that supports the lifting / dropping rod so that it can move up and down. The lifting / dropping rod is movable up and down between an upper position (unlocked state) when the center column is not fixed, and a lower position (locked state) when the center column is fixed. In Figs. 1 to 3, the lifting / dropping rod (center column fixing rod 60) is in the lower position, and the center column 5 is fixed by the center column fixing device.

[0016] By installing and fixing the center pillar 5 in a predetermined position, the building opening is divided into a first opening and a second opening, and the first shutter curtain 1 opens and closes the first opening by raising and lowering one widthwise end guided by the first guide rail 3 and the other widthwise end guided by one guide groove 53 of the center pillar 5, and the second shutter curtain 2 opens and closes the second opening by raising and lowering one widthwise end guided by the second guide rail 4 and the other widthwise end guided by the other guide groove 53 of the center pillar 5.

[0017] [B] Middle pillar fixing device [B-1] Overall configuration The center column fixing device of this embodiment comprises a recess 7 located in the floor surface FL and open at the top, a plate 8 which is detachably attached to the upper end of the recess 7 and is approximately flush with the floor surface FL and has a first locking hole 80 and a second locking hole 81 for receiving a center column fixing rod 60, a cylindrical body 9 fixed in a hanging manner to the underside of the plate 8, located directly below the first locking hole 80 and the second locking hole 81, respectively, a lid body 10 provided within the cylindrical body 9, and a coil spring 11 as an elastic member provided within the cylindrical body 9 and supporting the lid body 10 from below so as to urge it upward.

[0018] When the center column is not fixed, the center column fixing rod 60 is in the upper position (above the first locking hole 80 and the second locking hole 81), and the first locking hole 80 and the second locking hole 81 are respectively blocked by the lid body 10 abutting against the underside of the plate 8 due to the pushing force (biasing force) of the coil spring 11. When the center column is fixed, the center column fixing rod 60, which is in the upper position, descends to the lower position, and the center column fixing rod 60 pushes the lid body 10 and the coil spring 11 downward to lock them into the first locking hole 80 and the second locking hole 81, respectively, and the center column 5 is fixed.

[0019] In this embodiment, the plate 8 and the cylindrical body 9 including the cover 10 and the coil spring 11 form a unit, and the unit is detachable from the recess 7. In the illustrated embodiment, the unit includes two cylindrical bodies 9, and each cylindrical body 9 may be referred to as a first cylindrical body 9 and a second cylindrical body 9.

[0020] [B-2] Unit (plate 8 + cylindrical body 9) A unit consisting of a plate 8 and a cylindrical body 9 will be described with reference to Fig. 6. The plate 8 is a rectangular plate extending in the opening width direction, with a first locking hole 80 formed at one end in the longitudinal direction and a second locking hole 81 formed at the other end in the longitudinal direction. A first cylindrical body 9 and a second cylindrical body 9 are fixed (welded) to the underside of the plate 8, positioned directly below the first locking hole 80 and the second locking hole 81, respectively. In this embodiment, the first locking hole 80 and the second locking hole 81 are formed offset to one side (indoor side) of the plate 8 in the lateral direction.

[0021] The inner diameter of the internal space (hollow portion) of the cylindrical body 9 is larger than the diameters of the first locking hole 80 and the second locking hole 81, and a coil spring 11 is installed in the internal space. The diameter of the coil spring 11 is approximately the same as the inner diameter of the internal space, and the coil spring 11 is close to the inner surface of the side surface 90 of the cylindrical body 9 and is capable of expanding and contracting in the height direction in the internal space. The lower end of the coil spring 11 abuts against the bottom 91 of the cylindrical body 9, and the upper end of the coil spring 11 abuts against the lid body 10 from below.

[0022] The cover 10 according to this embodiment is a circular plate, and the diameter of the cover 10 is larger than the diameters of the first and second locking holes 80 and 81, and slightly smaller than the inner diameter of the internal space of the cylindrical body 9. When the opening is fully opened (when the center column is not fixed), the cover 10 abuts against the lower surface of the plate 8 by the pushing force (biasing force) of the coil spring 11, and blocks the locking holes 80 and 81 from below. This prevents dirt and dust from entering the internal space of the cylindrical body 9. The cover 10 may be formed from a lower large-diameter circular plate and an upper small-diameter circular plate formed on the upper surface of the lower large-diameter circular plate, with the lower circular plate abutting against the lower surface of the plate 8, the upper circular plate being located in the locking holes 80 and 81, and the upper surface of the upper circular plate being approximately flush with the upper surface of the plate 8.

[0023] A hole 92 is formed in the bottom 91 of the cylindrical body 9. When the center column fixing rod 60 pushes down the cover 10 to engage with the locking holes 80 and 81 during center column fixing, there is a risk that dust or the like may enter the internal space of the cylindrical body 9 through the gap between the center column fixing rod 60 and the first locking hole 80 and the second locking hole 81. In this embodiment, even if dust or the like does enter the internal space of the cylindrical body 9, it is discharged through the hole 92, thereby preventing dust or the like from accumulating in the internal space of the cylindrical body 9.

[0024] Positioning abutments 82 for a pair of center posts 5 are protrudingly provided on the upper surface of the plate 8, located at the center in the short direction between the first locking hole 80 and the second locking hole 81. A hole 83 into which a screw 84 (means for fixing the unit to the recess 7) is inserted is formed in the plate 8, located at the center in the long direction. In this embodiment, the center of the hole 83 is located on an imaginary line connecting the left and right locking holes 80, 81 in a plan view. In the upper diagram of FIG. 6, the center post 5 is located above the positioning abutments 82, and the hole 83 may be formed in the area below the positioning abutments 82, between the left and right locking holes 80, 81.

[0025] [B-3] Recess 7, the recess 7 according to this embodiment is made up of a box-shaped body having an open top, a first wall 70 and a second wall 71 opposed to each other, a third wall 72 and a fourth wall 73 opposed to each other, a bottom surface 74, and a horizontal edge portion 75 around the upper end of the box-shaped body. The horizontal edge portion 75 is made up of a first short side 750, a second short side 751, a first long side 752, and a second long side 753. A first mounting portion 76 is formed between the upper end of the first wall 70 and the first short side 750, and a second mounting portion 77 is formed between the upper end of the second wall 71 and the second short side 751.

[0026] In the recess 7, an intermediate mounting portion 78 is provided so as to bridge the lower surfaces of the longitudinally intermediate portion of the first long side 752 and the second long side 753. A notch is formed in the upper ends of the opposing third wall 72 and fourth wall 73 at the intermediate mounting portion 78. The upper surfaces of the first mounting portion 76, the second mounting portion 77 and the intermediate mounting portion 78 are at the same height and located on the same horizontal plane. A screw hole 780 is formed in a predetermined portion of the intermediate mounting portion 78.

[0027] [B-4] Middle pillar fixing device (assembly) The center pillar fixing device is assembled by removably attaching a unit consisting of a plate 8 and a cylindrical body 9 to a recess 7 embedded at a predetermined position in a floor surface FL so as to close the open recess 7.

[0028] 4, a first edge 8a on one end side in the length direction of the plate 8 is placed on the first mounting portion 76, a second edge 8b on the other end side in the length direction is placed on the second mounting portion 77, and an intermediate portion in the length direction is placed on the intermediate mounting portion 78, so that the upper opening of the recess 7 is blocked by the plate 8. At this time, a hole 83 formed in the plate 8 and a screw hole 780 formed in the intermediate mounting portion 78 are aligned, and a screw 84 is inserted from the hole 83 and screwed into the screw hole 780, so that the unit is detachably fixed to the recess 7.

[0029] In the assembled center column fixing device, the side surface 90 of the first cylindrical body 9 abuts or is adjacent to the first wall 70 and third wall 72 of the recess 7, and the side surface 90 of the second cylindrical body 9 abuts or is adjacent to the second wall 71 and third wall 72 of the recess 7, and is located above the first cylindrical body 9, the bottom 91 of the second cylindrical body 9, and the bottom surface 74 of the recess 7.

[0030] When the opening is fully open (when the center pillar is not fixed), the cover 10 is in contact with the lower surface of the plate 8 by the upward pushing force (biasing force) of the coil spring 11, and closes the locking holes 80, 81 from below. This prevents dirt and dust from entering the internal space of the cylindrical body 9.

[0031] When the center post 5 is installed at a predetermined position, the lower end of the center post 5 is positioned by abutting against the positioning abutment 82, the lifting rod from the upper position is lowered to the lower position, and the two center post fixing rods 60 are inserted into the internal space of the cylindrical body 9 through the first locking hole 80 and the second locking hole 81, respectively. At this time, the center post fixing rod 60 abuts against the lid body 10 from above, compressing the coil spring 11 in the internal space of the cylindrical body 9 and pushing the lid body 10 downward (FIG. 5), and the lifting rod is in the lower position (locked state), and the pushed-down state is maintained. For convenience, FIG. 5 shows the coil spring 11 in a state of being compressed downward in close contact, but it should be noted that depending on the height position of the lower end of the center post fixing rod 60 when fixed, the coil spring 11 may lift the lid body 10 slightly upward compared to the embodiment in FIG. 5.

[0032] When the center column is fixed, when the center column fixing rod 60 pushes down the cover 10 and engages with the engagement holes 80, 81, there is a risk that dust or the like may enter the internal space of the cylindrical body 9 through the gaps between the center column fixing rod 60 and the first engagement hole 80 and the second engagement hole 81. In this embodiment, even if dust or the like does enter the internal space of the cylindrical body 9, it is discharged from the hole portion 92, thereby preventing dust or the like from accumulating in the internal space of the cylindrical body 9. [Explanation of symbols]

[0033] 5 Middle pillar 60 Center column fixing rod (first center column fixing rod, second center column fixing rod) 7 Recess 70 First wall (side wall) 71 Second wall (side wall) 72 3rd wall (side wall) 73 4th wall (side wall) 74 Bottom 75 horizontal edge 76 First placement section 77 Second Placement Section 78 Intermediate placement section 8 Plates (units) 8a: First edge of plate (one end side in the longitudinal direction of the plate, edge) 8b Second edge of plate (other end side of plate in the longitudinal direction, edge) 80 First locking hole (locking hole) 81 Second locking hole (locking hole) 9 Cylindrical body (first cylindrical body, second cylindrical body, unit) 90 Side 91 Bottom 92 Hole 10 Lid 11 Coil spring (elastic member) FL floor surface

Claims

1. A recess located within the floor surface and having an open upper portion; a plate that is detachably provided at an upper end of the recess so as to be substantially flush with the floor surface and has a locking hole formed therein for receiving a center column fixing rod; a cylindrical body that is located directly below the engagement hole and is fixed to the lower surface of the plate in a hanging manner; A lid provided inside the cylindrical body; an elastic member provided within the cylindrical body and supporting the lid body from below so as to urge the lid body upward; Equipped with When the center column is not fixed, the locking hole is closed by the cover abutting against the lower surface of the plate, When the center column is fixed, the center column fixing rod pushes the cover body and the elastic member downward to engage with the engagement hole, The plate, the lid, and the cylindrical body having the elastic member are formed as a unit, The unit is detachable from the recess. Middle column fixation device.

2. The bottom of the cylindrical body is located above the bottom surface of the recess, A hole is formed in the bottom of the cylindrical body.

2. The center post fixing device of claim 1.

3. In the unit, the plate has a rectangular shape, A first locking hole for receiving a first center post fixing rod is formed on one end side of the plate in the longitudinal direction, and a second locking hole for receiving a second center post fixing rod is formed on the other end side of the plate in the longitudinal direction, A first cylindrical body is fixed to the underside of one end of the plate in the longitudinal direction, directly below the first locking hole, and a second cylindrical body is fixed to the underside of the other end of the plate in the longitudinal direction, directly below the second locking hole.

3. A center pillar fixing device according to claim 1 or 2.

4. The recess includes a side wall, a bottom surface, and a box-shaped body having an open top. a horizontal edge portion at the upper end of the box-shaped body; a mounting portion is formed between the horizontal edge portion and an upper end of the side wall, The edge of the plate is placed on the placement portion.

2. The center post fixing device of claim 1.

5. The recess includes a box-shaped body having an open top and including first and second opposing walls, third and fourth opposing walls, and a bottom surface; and four horizontal edges around the top of the box-shaped body. the horizontal edge portion comprises a first short side, a second short side, a first long side, and a second long side; a first mounting portion is formed between an upper end of the first wall and the first short side, and a second mounting portion is formed between an upper end of the second wall and the second short side, One end side of the plate in the longitudinal direction is placed on the first placement portion, and the other end side of the plate in the longitudinal direction is placed on the second placement portion.

4. The center post fixing device according to claim 3.

6. an intermediate placement portion is formed in the recess so as to bridge a longitudinal intermediate portion between the first long side and the second long side, The plate has a longitudinal intermediate portion removably fixed to the intermediate mounting portion by a screw.

6. The center post fixing device according to claim 5.

7. a side surface of the first cylindrical body is in contact with or close to the first wall and the third wall, A side surface of the second cylindrical body is in contact with or close to the second wall and the third wall.

6. The center post fixing device according to claim 5.

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