Cover retainer

Abstract

To provide a cover retainer that simplifies the work for attaching a cover to a cable rack of standing construction and allows for easy plating or coating.SOLUTION: A first support body 10 is provided to lock from a cover mounting side of a main beam P1 to a side face. A second support body 20 is provided to be detachably connected to the first support body 10. The second support body 20 is fixed from a side face of the main beam P1 to an opposite side of the cover mounting side. A mounting bolt 1 is provided for screwing a cover Q to the first support body 10. The mounting bolt 1 is projected from the first support body 10 to screw into the cover Q. The mounting bolt 1 is held in a state of being loosely inserted into a bolt insertion hole 11 of the first support 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cover fastener for attaching a cover to a cable rack for vertical installation. [Background technology]

[0002] When attaching a cover to a cable rack for vertical installation, a cover attachment fitting as described in Patent Document 1 and a cover attachment device as described in Patent Document 2 have been proposed.

[0003] The cover mounting bracket of Patent Document 1 comprises a locking portion 1 that fits around a sub-girder P2 in a cable rack P and locks onto the sub-girder P2 so as to be able to slide freely thereon, a positioning portion 2 that is arranged along the side of the parent girder P1, and a fixing portion 3 that fixes the cover Q. The cover Q is secured by a screw fastener that is attached to the cover Q by inserting a connecting bolt 5 erected on the fixing portion 3 into a screw hole Q1 in the cover Q.

[0004] On the other hand, the mounting device of Patent Document 2 is configured to include a locking portion 8 that is locked into the sub-girder 5 of the cable rack 1 and an attachment portion 9 for attaching the cover 2, and to support the cover 2 with a connecting portion 10 erected between the attachment portion 9 and the locking portion 8. The cover 2 is fixed by screwing a screw member 18b into the female thread portion of a screw through hole 17b formed in the attachment portion 9. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5784687 [Patent Document 2] Patent No. 4048983 Summary of the Invention [Problem to be solved by the invention]

[0006] These conventional cover mounting fixtures are all fixed to the sub-girders of the cable rack, so the screw holes of the cover are often pre-drilled to match the position of the sub-girders. However, when attaching a cover to a cable rack that is installed vertically, the main work is done near the floor penetration. Therefore, covers with screw holes drilled to match the position of the sub-girders have to be separately formed to match the distance from the floor penetration to the position of the sub-girders (see Figure 1 of Patent Document 1).

[0007] The cover mounting brackets described in Patent Document 2 include a type that is not fixed to the sub-girders, but the work related to the rising cover is mainly done near the floor penetration parts, and with conventional mounting brackets used near the floor penetration parts, it is necessary to attach a separate bracket to the cover. For this reason, this bracket interferes with the earthquake-resistant frame part, so it cannot be attached to the cable rack.

[0008] Furthermore, the cover mounting hardware described in Patent Document 1 has a structure in which the connecting bolts 5 are fixed to the fixing parts 3 by crimping, which makes it difficult to plate the cover mounting hardware. In other words, if plating is performed after the connecting bolts 5 are fixed, the connecting bolts 5 will become clogged, and if an attempt is made to crimp the connecting bolts 5 after plating, the pilot holes for crimping will be filled with plating, which is an inconvenience. For this reason, in order to plate or paint the cover mounting hardware, it is necessary to protect the connecting bolts 5 and the pilot holes by masking or the like.

[0009] Furthermore, in a structure in which the connecting bolts are fixed in place by crimping in advance, even a slight misalignment between the position of the fixed connecting bolt and the position of the screw hole drilled in the cover can make it difficult to screw the cover in place.

[0010] On the other hand, even in the cover installation device described in Patent Document 2, the cover installed near the floor penetration part needs to be formed to match the position from the floor penetration part to the position of the child beam. Furthermore, when plating or painting this cover installation device, the female thread part of the screw through hole 17b formed in the attachment part 9 needs to be protected by masking or the like. Moreover, the position of the screw through hole 17b of the cover installation device needs to be accurately matched with the position of the screw member 18b that is screwed from the cover side.

[0011] As described above, conventional cover mounting hardware, etc., are all structured to be fixed to the sub-girders, so there are operational issues when attaching covers to cable racks that are erected near floor penetrations. There is also the inconvenience of not being able to attach them after the cables have been laid. Moreover, when plating or painting the cover mounting hardware, etc., many operations are required, such as protecting the threads of the connecting bolts and the female threads of the screw through holes with masking, etc.

[0012] Therefore, in order to solve the above-mentioned problems, the present invention aims to provide a cover fastener that simplifies the work of attaching a cover to a cable rack for vertical installation and also makes it easy to plate or paint the fasteners. [Means for solving the problem]

[0013] In order to achieve the above object, the first aspect of the present invention is , K A cover fastener for attaching a cover Q to a cable rack P, The cable rack P is configured Cover Q along parent beam P1 Take Attachable cover fasteners The above Located on the outside of the parent beam P1, The above The cover fastener is provided at both ends with locking pieces 12A and 23A that lock from the outside to the inside of the parent beam P1, The above The cover fastener has a bolt insertion hole 11 at one or both ends for fastening the cover Q with a mounting bolt 1.

[0014] The cover fastener of the second means is composed of a first support 10 and a second support 20, The above The first support 10 The above The cover of the parent beam P1 is attached to the side of the parent beam P1. The above The second support 20 The above Removably connected to the first support 10 The above From the side of parent beam P1 The above It is locked on the opposite side to the cover installation side, The above Protruding from the first support 10 The above Insert it into the screw hole Q1 of the cover Q. The above Cover Q The above It is provided with a bolt insertion hole 11 for fixing with a mounting bolt 1 which is screwed to the first support 10.

[0015] The third means is the second support 20 teeth, The cover Q is provided with the bolt insertion holes 11 for fixing the cover Q with the mounting bolts 1.

[0016] The mounting bolt 1 of the fourth means is held in the bolt insertion hole 11 by a locking piece 2 detachably attached to the threaded portion of the mounting bolt 1 .

[0017] The mounting bolt 1 of the fifth means is a square root bolt, and the bolt insertion hole 11 is formed to be larger in size than the square root portion of the mounting bolt 1. . Effect of the Invention

[0018] According to the present invention, the work of attaching a cover to a cable rack for a rising construction is simplified. Also, the cover near the floor penetration part can be fixed arbitrarily without being restricted by the position of the sub-girder or earthquake-resistant frame. Furthermore, even if the fasteners are plated or painted, there is no need to mask the connecting bolts, making plating or painting easier. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is an exploded perspective view showing a state in which the present invention is used. [Diagram 2] FIG. 2 is a perspective view showing a state in which the present invention is used. [Diagram 3] FIG. 1 is an exploded perspective view showing an embodiment of the present invention. [Figure 4] FIG. 1 is a perspective view of a main portion showing a state in which an embodiment of the present invention is used. [Diagram 5] FIG. 1 is a plan view of a main portion showing a state in which an embodiment of the present invention is used. [Figure 6] FIG. 11 is an exploded perspective view showing another embodiment of the present invention. [Figure 7] FIG. 13 is a plan view of a main portion showing a state in which another embodiment of the present invention is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The fastener of the present invention is a fastener for fixing a cover to a cable rack, and is particularly used for attaching a cover to a cable rack for vertical construction. That is, it is a cover fastener that can attach a cover Q vertically along the parent beam P1 of the cable rack P.

[0021] The main components of the fastener of the present invention include a first support 10, a second support 20, and a mounting bolt 1 that protrudes from the first support 10 and screws in a cover Q (see FIG. 3). This cover fastener is installed so as to be attached to the outside of the parent beam P1.

[0022] The first support 10 is a member that engages the cover mounting side of the parent girder P1 to the side (see FIG. 4). The mounting bolt 1 protruding from this first support 10 is loosely inserted into a bolt insertion hole 11 drilled in the first support 10 (see FIG. 3) and is held in a protruding state facing the cover Q (see FIG. 4). Then, this mounting bolt 1 is inserted into a screw hole Q1 of the cover Q to screw the cover Q in place (see FIG. 1).

[0023] The illustrated first support 10 is formed by bending a metal plate and has an engagement piece 12, a contact piece 13, and a connecting piece 14 (see FIG. 3). The engagement piece 12 is the part that abuts against the cover mounting side of the parent girder P1. The mounting bolt 1 that screws the cover Q is inserted into a bolt insertion hole 11 drilled in this engagement piece 12. Furthermore, a locking piece 12A is bent from this engagement piece 12 toward the inside of the parent girder P1 (see FIG. 5). Two locking pieces 12A are shown formed at the top and bottom, but there may be one or three or more locking pieces 12A.

[0024] The abutment piece 13 is a portion that is bent from the engagement piece 12 and abuts against the outer surface of the parent girder P1 (see FIG. 4). Furthermore, a connecting piece 14 is provided that is bent from this abutment piece 13 and formed to stand upright from the outer surface of the parent girder P1. This connecting piece 14 is configured to be connected to a second support 20, which will be described later, and is provided with a bent piece 14A in which an end of the connecting piece 14 is further bent toward the second support 20.

[0025] The mounting bolt 1 is held in the bolt insertion hole 11 by attaching the locking piece 2 while it is loosely inserted into the bolt insertion hole 11 (see FIG. 4). The illustrated locking piece 2 is disk-shaped and made of a resin material such as PET, and has a hole in the center through which the mounting bolt 1 is inserted (see FIG. 3). The means for holding the mounting bolt 1 is not limited to the locking piece 2, and it is also possible to hold the mounting bolt 1 by other means for holding it in the engagement piece 12 of the first support 10, such as a crimping means or clamping means such as a clip, or to use a female thread instead of the bolt insertion hole 11 (not shown).

[0026] Furthermore, a square root bolt is used as the mounting bolt 1, and the bolt insertion hole 11 of the first support 10 is formed to be slightly larger than the square root portion of the mounting bolt 1 (see FIG. 3). When the locking piece 2 is attached to the mounting bolt 1 loosely inserted into this bolt insertion hole 11, the mounting bolt 1 is held in the state where it is loosely inserted into the bolt insertion hole 11. When plating or painting the first support 10 or the second support 20, this can be done with the mounting bolt 1 removed. Moreover, there is no risk of the bolt insertion hole 11 being filled with plating or paint, so masking or the like is not required.

[0027] Then, the mounting bolt 1 is inserted into the screw hole Q1 of the cover Q, and a washer 4 and a cap nut 5 are screwed onto the mounting bolt 1 protruding from the surface of the cover Q to fix the cover Q (see FIG. 5). At this time, the mounting bolt 1 is held in a loosely inserted state in the bolt insertion hole 11, and since the bolt insertion hole 11 is an elongated hole, fine adjustment of the position is possible while the bolt is held in place.

[0028] The second support 20 is a member that is detachably connected to the first support 10, and is fixed from the side of the parent girder P1 to the opposite side to the cover mounting side (see FIG. 4). The illustrated second support 20 has a connecting piece 21, an abutting piece 22, and an engaging piece 23 (see FIG. 3).

[0029] The connecting piece 21 is a portion that is detachably connected to the connecting piece 14 of the first support 10 (see FIG. 4). As shown in the figure, a connecting bolt 3 is inserted through a connecting hole 15 drilled in the connecting piece 14 and a connecting hole 25 drilled in the connecting piece 21, and is screwed in place with a washer nut 6 (see FIG. 3).

[0030] An abutment piece 22 is formed by bending from this connecting piece 21 and abutting against the outer surface of the parent girder P1 (see FIG. 5). Furthermore, an engagement piece 23 is formed by bending from the abutment piece 22 and engaging with the opposite side of the cover mounting surface of the parent girder P1. Furthermore, a locking piece 23A is bent from this engagement piece 23 toward the inside of the parent girder P1 to prevent the engagement piece 23 from shifting out of position. Furthermore, by providing this locking piece 23A and the locking piece 12A of the first support 10 on both ends of the cover fastener, the cover fastener can be attached. Also, by changing the shape of the engagement piece 23 and the locking piece 23A, it can also be attached to the child girder P2.

[0031] The fastening fittings shown in Figures 6 and 7 are configured to screw the cover Q to the side opposite to the cover mounting side of the cable rack P, and are configured to fix the cover Q to both sides of the cable rack P. That is, the engaging piece 23 of the second support 20 is extended like the engaging piece 12 of the first support 10 to open a back bolt insertion hole 24 (see Figure 6). Then, the cover Q on the back side (child girder P2 side) is screwed to the mounting bolt 1 inserted into this back bolt insertion hole 24 (see Figure 7).

[0032] The configurations of the present invention are not limited to the illustrated examples, and may be integrally formed from resin, elastic metal, or foldable. The first support 10 and the second support 20 may have the same shape, and the shapes of the first support 10 and the second support 20, or the mounting bolt 1 and the connecting bolt 3, etc. may be freely changed in design within the scope of the present invention. [Explanation of symbols]

[0033] P Cable rack P1 Parent column P2 minor digit Q Cover Q1 screw hole 1 Mounting bolt 2 Locking piece 3 Connecting bolt 4 Washers 5 Cap nut 6 Nut with seat 10 First Support 11 Bolt insertion hole 12 Engagement piece 12A Locking piece 13 Contact piece 14 Connecting piece 14A bending piece 15 Connection hole 20 Second Support 21 Connecting piece 22 Contact piece 23 Engagement piece 23A Locking piece 24 Back bolt insertion hole 25 Connection hole

Claims

1. A cover fastener for attaching a cover to a cable rack, comprising: a cover fastener capable of attaching a cover along a parent girder constituting the cable rack is provided on the outside of the parent girder, and fastening pieces that engage from the outside of the parent girder toward the inside are provided on both ends of the cover fastener; A cover fastener having a bolt insertion hole at one or both ends for fastening the cover with a mounting bolt that screws the cover in place.

2. The cover fastener is composed of a first support and a second support, The first support member is engaged from the cover mounting side of the parent beam to a side surface, The second support is detachably connected to the first support and engaged from a side surface of the parent beam to a side opposite to the cover mounting side, 2. The cover fastener according to claim 1, further comprising a bolt insertion hole for fastening with a mounting bolt that protrudes from the first support and is inserted into a screw hole in the cover to screw the cover to the first support.

3. 3. The cover fastener according to claim 2, wherein the second support body is provided with a bolt insertion hole for fixing the cover with a mounting bolt that screws the cover.

4. 2. The cover fastener according to claim 1, wherein the mounting bolt is held in the bolt insertion hole by a locking piece detachably attached to the threaded portion of the mounting bolt.

5. A cover fastener as described in claim 1, wherein the mounting bolt is a square root bolt, and the bolt insertion hole is formed to a size larger than the square root portion of the mounting bolt.

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