Cover fasteners

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 during erection construction.

Background Art

[0002] When attaching a cover to a cable rack during erection construction, a cover attachment fitting described in Patent Document 1, a cover attachment device described in Patent Document 2, etc. have been proposed.

[0003] The cover attachment fitting of Patent Document 1 includes a locking portion 1 that fits over a secondary beam P2 in a cable rack P and is slidably locked to the secondary beam P2, a positioning portion 2 disposed along the side surface of the primary beam P1, and a fixing portion 3 for fixing the cover Q. A connecting bolt 5 erected on the fixing portion 3 is inserted into a screw hole Q1 of the cover Q to screw-fix the cover Q.

[0004] On the other hand, the attachment device of Patent Document 2 includes a locking portion 8 that is locked inside a secondary beam 5 of a cable rack 1 and an attachment portion 9 for attaching the cover 2, and is configured to support the cover 2 by a connecting portion 10 erected between the attachment portion 9 and the locking portion 8. And a screw member 18b is screwed into a female screw portion of a screw through hole 17b formed in the attachment portion 9 to fix the cover 2.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] These conventional cover mounting brackets are fixed to the sub-girders of the cable rack, so the screw holes in the cover are sometimes pre-drilled to match the position of the sub-girders. However, when attaching covers to cable racks installed in a rising section, the work mainly takes place near the floor penetration point. Therefore, covers with screw holes pre-drilled to match the position of the sub-girders need to be separately fabricated to match the distance from the floor penetration point to the position of the sub-girders (see Figure 1 of Patent Document 1).

[0007] Patent Document 2 describes a cover mounting bracket that does not need to be fixed to the sub-girder, but work related to rising covers is mainly done near floor penetrations, and conventional mounting brackets used near floor penetrations require a separate bracket to be attached to the cover. As a result, this bracket interferes with the seismic support frame and cannot be attached to the cable rack.

[0008] Furthermore, the cover mounting bracket described in Patent Document 1 has a structure in which the connecting bolt 5 is fixed to the fixing part 3 by crimping, making it difficult to plate the cover mounting bracket. In other words, if plating is applied after fixing the connecting bolt 5, clogging occurs in the connecting bolt 5, and if crimping is attempted on the connecting bolt 5 after plating, the pilot holes for crimping become filled with plating, which is an inconvenience. For this reason, in order to plate or paint the cover mounting bracket, it is necessary to protect the connecting bolt 5 and pilot holes with masking tape or the like.

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

[0010] On the other hand, in the cover mounting device described in Patent Document 2, the cover installed near the floor penetration needs to be formed to match the position from the floor penetration to the position of the sub-girder. Furthermore, if plating or painting is applied to this cover mounting device, the female thread portion of the screw through hole 17b formed in the attachment part 9 needs to be protected with masking or the like. Moreover, the position of the screw through hole 17b of the cover mounting device needs to be precisely aligned with the position of the screw member 18b that is screwed in from the cover side.

[0011] Thus, conventional cover mounting brackets and the like are all structured to be fixed to the sub-girders, which presents operational challenges when attaching covers to cable racks that are installed rising near floor penetrations. Furthermore, they cannot be attached after the cables have been laid. Moreover, when plating or painting the cover mounting brackets and the like, a lot of work is required, such as protecting the threaded parts of the connecting bolts and the female threaded parts of the screw holes with masking tape.

[0012] Therefore, the present invention aims to provide a cover fastener that solves the above-mentioned problems by simplifying the process of attaching a cover to a cable rack installed in a vertical position, and also facilitating the application of plating or painting to the fastener. [Means for solving the problem]

[0013] To achieve the above-mentioned objective, the first means in the present invention is a cable rack P Along the parent digit P1 that constitutes it A cover fastener for attaching cover Q, The cover fastener is composed of a first support 10 and a second support 20. The first support 10 is secured to the main girder P1 from the side where the cover Q is attached to the side, It comprises a first engaging piece 12 that engages with the cover Q mounting side of the main girder P1, a first locking piece 12A that is bent inward from the first engaging piece 12 toward the inside of the main girder P1, a first contact piece 13 that abuts against the outer surface of the main girder P1, and a first connecting piece 14 that connects to the second support 20, The first engaging piece 12 is The cover Q is provided with bolt insertion holes 11 through which mounting bolts 1 for screwing the cover Q are inserted. The second support 20 is detachably connected to the first support 10 and is locked from the side of the main girder P1 to the opposite side of the cover Q attachment side. A second engaging piece 23 that engages with the opposite side of the cover Q mounting side, a second locking piece 23A that is bent inward from the second engaging piece 23 toward the inside of the main girder P1, a second contact piece 22 that abuts against the outer surface of the main girder P1, and a second connecting piece 21 that is detachably connected to the first connecting piece 14, It is equipped with this.

[0014] The second method is, Two bends are formed in the first locking piece 12. It is.

[0015] Said third means Second engaging piece 23 is provided with a back bolt insertion hole 24 for fixing the cover Q with the mounting bolt 1 screwed thereon.

[0016] Said 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-headed bolt, and the bolt insertion hole 11 is formed to be larger than the square-headed portion of the mounting bolt 1. .

Advantages of the Invention

[0018] According to the present invention, the work of attaching a cover to the cable rack for erection construction becomes easy. Further, the cover near the floor penetration portion can be arbitrarily fixed without being restricted by the position of the purlin or the seismic base. Furthermore, even when plating or painting is applied to the fastener, there is no need to mask the connecting bolt, and plating or painting becomes easy.

Brief Description of the Drawings

[0019] [Figure 1] It is an exploded perspective view showing the usage state of the present invention. [Figure 2] It is a perspective view showing the usage state of the present invention. [Figure 3] It is an exploded perspective view showing an embodiment of the present invention. [Figure 4] It is a perspective view of the main part showing the usage state of an embodiment of the present invention. [Figure 5] It is a plan view of the main part showing the usage state of an embodiment of the present invention. [Figure 6] It is an exploded perspective view showing another embodiment of the present invention. [Figure 7] It is a plan view of the main part showing the usage state of another embodiment of the present invention.

Modes for Carrying Out the Invention

[0020] The fastening device of the present invention is a fastening device for fixing a cover to a cable rack, and is particularly for attaching a cover to a cable rack in a vertical installation. That is, it is a cover fastening device that allows the cover Q to be attached vertically along the main beam P1 of the cable rack P.

[0021] The main components of the fastening device 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 onto the cover Q (see Figure 3). This cover fastener is installed to be attached to the outside of the main girder P1.

[0022] The first support member 10 is a member that locks onto the main girder P1 from the cover mounting side to the side (see Figure 4). The mounting bolt 1 protruding from this first support member 10 is loosely inserted into a bolt insertion hole 11 drilled in the first support member 10 (see Figure 3) and is held in a position protruding toward the cover Q (see Figure 4). Then, this mounting bolt 1 is inserted through the screw hole Q1 of the cover Q and the cover Q is screwed in (see Figure 1).

[0023] The first support 10 shown in the figure is made by bending a metal plate. First engaging piece 12 , First contact piece 13 , 1st connecting piece 14 It has the following characteristics (see Figure 3). First engaging piece 12 This is the part that abuts against the cover mounting side of the main girder P1. The mounting bolt 1 that screws the cover Q is located here First engaging piece 12 Insert it through the bolt insertion hole 11 that has been drilled. Furthermore, this First engaging piece 12 From towards the inside of the parent digit P1 1st locking piece 12A It is formed by bending (see Figure 5). 1st locking piece 12A Although it is formed in two parts, one above the other, 1st locking piece 12A You can have one or three or more.

[0024] First contact piece 13 teeth, First engaging piece 12 This is the part that is bent and contacts the outer surface of the main girder P1 (see Figure 4). Furthermore, this First contact piece 13 It is bent and formed to stand upright from the outer surface of the main girder P1. 1st connecting piece 14 It is equipped with this. 1st connecting piece 14This is configured to be connected to the second support 20, which will be described later. 1st connecting piece 14 It is further equipped with a bent piece 14A whose end is bent towards the second support 20.

[0025] The mounting bolt 1 is held in the bolt insertion hole 11 by attaching the locking piece 2 while the bolt is loosely inserted into the bolt insertion hole 11 (see Figure 4). The locking piece 2 shown is a disc-shaped object made of a resin material such as PET, with a hole formed in the center through which the mounting bolt 1 is inserted (see Figure 3). Furthermore, the means of holding the mounting bolt 1 is not limited to the locking piece 2, but the first support body 10 First engaging piece 12 Other means of holding it, such as a crimping or clamping means like a clip, are also possible, and a female thread can be used instead of the bolt insertion hole 11 (not shown).

[0026] Furthermore, the mounting bolt 1 is a square-headed bolt, and the bolt insertion hole 11 of the first support 10 is formed to be slightly larger than the square-headed portion of the mounting bolt 1 (see Figure 3). When the locking piece 2 is attached to the mounting bolt 1 that is loosely inserted into this bolt insertion hole 11, the mounting bolt 1 is held in the loosely inserted state in the bolt insertion hole 11. Note that when plating or painting is to be applied to the first support 10 or the second support 20, this can be done with the mounting bolt 1 removed. Moreover, since there is no risk of the bolt insertion hole 11 being filled with plating or paint, masking is unnecessary.

[0027] Then, the mounting bolt 1 is inserted through the screw hole Q1 of the cover Q, and the washer 4 and cap nut 5 are screwed onto the mounting bolt 1 protruding from the surface of the cover Q to secure the cover Q (see Figure 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 its position is possible while it is held in place.

[0028] The second support member 20 is a member that is detachably connected to the first support member 10 and is fixed from the side of the main girder P1 to the opposite side of the cover attachment side (see Figure 4). The second support member 20 shown in the figure is 2nd connecting piece 21 , Second contact piece 22 , Second engaging piece 23It has the following characteristics (see Figure 3).

[0029] 2nd connecting piece 21 The first support 10 1st connecting piece 14 This is a part that is detachably connected to (see Figure 4). In the illustration, 1st connecting piece 14 A connecting hole 15 is drilled in it, 2nd connecting piece 21 Insert the connecting bolt 3 through the connecting hole 25 that has been drilled, and fasten it with a washered nut 6 (see Figure 3).

[0030] this 2nd connecting piece 21 It is bent from there and abuts against the outer surface of the main girder P1. Second contact piece 22 This is formed (see Figure 5). Furthermore, Second contact piece 22 It is bent and secured to the opposite side of the cover mounting surface of the main girder P1. Second engaging piece 23 This is what was formed. Furthermore, this Second engaging piece 23 From the inside of the main girder P1 Second locking piece 23A It is bent and formed, Second engaging piece 23 This prevents misalignment. Furthermore, this Second locking piece 23A and the first support 10 1st locking piece 12A By providing these at both ends of the cover fastener, the cover fastener can be attached. Second engaging piece 23 , Second locking piece 23A By changing its shape, it can also be attached to the sub-girder P2.

[0031] The fasteners shown in Figures 6 and 7 are configured to screw the cover Q to the opposite side of the cable rack P from the cover mounting side, thus fixing the cover Q to both sides of the cable rack P. Second engaging piece 23 to the first support 10 First engaging piece 12 As shown, the section is extended and a bolt insertion hole 24 for the back is drilled (see Figure 6). Then, the cover Q on the back side (sub-girder P2 side) is screwed in using the mounting bolt 1 inserted through this bolt insertion hole 24 (see Figure 7).

[0032] Furthermore, the components of the present invention are not limited to the illustrated examples, and can, for example, be made of resin, elastic metal, or integrally formed in a foldable form. Also, 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 bolts 1 and connecting bolts 3, etc., can be freely modified in design as long as the gist of the present invention is not altered. [Explanation of Symbols]

[0033] P Cable Rack P1 Main Digit P2 sub-digit Q Cover Q1 Screw hole 1. Mounting bolts 2 locking pieces 3 connecting bolts 4 Washers 5 cap nuts 6. Nut with washer 10 First support 11 Bolt insertion holes 12 First engaging piece 12A 1st locking piece 13 1st contact piece 14 1st connection piece 14A bending piece 15 Connection hole 20 Second support twenty one 2nd connecting piece twenty two 2nd contact piece twenty three Second engaging piece 23A Second locking piece 24 Bolt insertion holes for the back 25 Connection hole

Claims

1. A cover fastener for attaching a cover along the main beam that makes up a cable rack, The cover fastener is composed of a first support and a second support, The first support is The main beam is secured from the cover mounting side to the side, A first engaging piece that engages with the cover mounting side of the main beam, A first locking piece formed by bending from the first engaging piece toward the inside of the main girder, A first contact piece that abuts against the outer surface of the main beam, The first connecting piece connects to the second support, The first engaging piece is provided with a bolt insertion hole through which a mounting bolt for screwing the cover is inserted. The second support is, It is detachably connected to the first support and locked from the side of the main beam to the opposite side of the cover attachment side, A second engaging piece that engages with the opposite side of the cover mounting side, A second locking piece formed by bending from the second engaging piece toward the inside of the main girder, A second contact piece that abuts against the outer surface of the main beam, A second connecting piece that is detachably connected to the first connecting piece, Equipped with, Cover fastener.

2. The cover fastener according to claim 1, wherein two of the first locking pieces are bent and formed.

3. The cover fastener according to claim 1 or 2, wherein the second engaging piece is provided with a back bolt insertion hole for securing the cover with mounting bolts that screw the cover in place.

4. 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. The cover fastener according to claim 1, wherein the mounting bolt is a square-headed bolt, and the bolt insertion hole is formed to be larger than the square-headed portion of the mounting bolt.

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