Mounting structure for supporting parts and box for storing electrical equipment

Abstract

To perform mounting with freedom of a mounting position and corresponding to a difference of mounting dimensions in a mounting structure for a support component mounted on an inner side face of an electric apparatus storage box.SOLUTION: The present invention relates to a mounting structure for a support component for mounting, on an inner side face of a box body of an electric apparatus storage box, a support component 1 comprising: a main body member 10 including a flange 12 in at least one end in a length direction; and a mounting member 30 connected so as to be coupled to the main body member using a screw 50 inserted into a hole provided in the flange. The mounting member includes: a first piece 32 including a screw insertion hole through which a shank 51 of the screw is inserted; a leg 33 extending so as to protrude from at least one end of the first piece to a length direction side of the main body member; and an abutting part which is abutted to the inner side face of the box body. The first piece is disposed between a head of the screw and the flange and the screw is threaded into the hole of the flange in a state where the main body member is fixed to the box body, such that the mounting member is elastically deformed.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a mounting structure for a support component and a box for housing an electrical device. [Background technology]

[0002] As described in Patent Document 1, the inner surface of the electrical equipment storage box may be provided with a wiring support member for organizing the wiring of the equipment stored inside, an internal equipment support member for mounting the internal equipment, etc. These support members may be fixed to the inner surface of the box body by welding, but mounting structures that take into consideration the freedom of arrangement and post-installation are also considered. Incidentally, Patent Document 1 describes a structure in which the support members are fixed by abutting against the side of the equipment mounting plate attached to the back panel of the box, but the equipment mounting plate is not necessarily used. However, with the structure of Patent Document 1, it is difficult to mount the support members if the equipment mounting plate is not used. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-340274 A

[0004] On the other hand, a structure for mounting the support member regardless of the presence or absence of an equipment mounting plate can be thought of as a structure in which the support member is fixed by abutting it against the back panel, but the sheet metal tolerances of the box body can cause slight differences in the mounting dimensions of the support member depending on whether the support member is mounted toward the top or bottom surface in the longitudinal direction of the electrical equipment storage box, or toward the center. If there is a difference in the mounting dimensions, the mounting state will be incomplete, and there is a risk of the screws coming loose or the support member becoming misaligned (tilted). Summary of the Invention [Problem to be solved by the invention]

[0005] The inventor of the present invention has studied this point diligently and attempted to solve the problem. The problem to be solved by the present invention is to provide a mounting structure for a support part to be attached to the inside surface of an electrical equipment storage box, which has a degree of freedom in the mounting position and can be mounted in accordance with differences in mounting dimensions. [Means for solving the problem]

[0006] In order to solve the above problem, an installation structure for a support part is provided for installing a support part comprising: a main body member having a flange portion with a hole at at least one end in the longitudinal direction; and an installation member connected to connect to the main body member using a screw inserted into a hole provided in the flange portion, to the inner surface of a box for storing electrical equipment, wherein the installation member comprises a first piece with a screw insertion hole through which the shank of the screw is inserted, a leg extending from at least one end of the first piece so as to protrude toward the longitudinal side of the main body member, and an abutment portion for abutting against the inner surface of the box, the first piece is positioned between the screw head and the flange portion, and the installation member is elastically deformed by screwing the screw into the hole in the flange portion with the main body member fixed to the box.

[0007] In addition, it is preferable that the first piece before the screw is screwed in is configured so that the distance from the flange portion gradually increases from the end side connected to the leg portion to the other end side, and that the difference in distance becomes smaller by screwing the screw into the hole in the flange portion.

[0008] In addition, it is preferable that the mounting member be configured to have a second piece connected by a leg portion so as to face the first piece, and the second piece be provided with a screw receiving piece that deforms due to movement of the screw tip when the screw attached to the hole in the flange portion is screwed into the hole.

[0009] It is also preferable that the screw receiving piece is formed with a protrusion that protrudes toward the inner surface of the box body.

[0010] It is also preferable that the contact portion is provided with a conductive portion that allows electrical continuity with the electrical device storage box.

[0011] It is also preferable that the support component mounting structure is provided as a box for housing electrical equipment. Effect of the Invention

[0012] According to the present invention, in the mounting structure for the support part attached to the inside surface of the electrical equipment storage box, there is a degree of freedom in the mounting position, and mounting can be made to accommodate differences in mounting dimensions. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a perspective view of an electrical device storage box according to the embodiment. [Diagram 2] 2 is a perspective view showing a state in which the door is removed from the electrical device storage box shown in FIG 1. However, the wiring support component is attached so that its longitudinal direction is aligned with the front-rear direction of the box body. [Diagram 3] 3 is a cutaway view of the lower part of FIG. 2, seen from direction III. [Figure 4] FIG. 4 is an exploded perspective view of the support component and its surroundings shown in FIG. 3. [Diagram 5] FIG. 13 is a perspective view showing an example of a main body member of the support component. [Figure 6] 6 is a perspective view of the main body member shown in FIG. 5, seen from the opposite side. [Figure 7] FIG. 13 is a perspective view showing an example of a mounting member for a support component. [Figure 8] 6 is a perspective view of the mounting member shown in FIG. 5, seen from the opposite side. [Figure 9] FIG. 6 is a side view of the mounting member shown in FIG. 5. [Figure 10] 11A and 11B are diagrams showing changes in state before and after a screw is screwed into a flange portion. [Figure 11] 13A and 13B are diagrams showing an example of a state in which the tip of a screw presses a screw receiving piece. [Figure 12] 13A and 13B are diagrams showing an example of a mounting member having a rectangular shape when viewed from the side. [Figure 13] 13 is a diagram showing an example of mounting using the mounting member shown in FIG. 12. [Figure 14]13A and 13B are diagrams showing an example of a mounting member having a U-shape in a side view with legs extending from both ends of a first piece. [Figure 15] 15 is a diagram showing an example of mounting using the mounting member shown in FIG. 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] An embodiment of the invention will be described below. As can be understood from Fig. 1 to Fig. 3, the mounting structure of a support part 1 of this embodiment is one in which the support part 1, which includes a main body member 10 having a flange portion 12 with a hole 11 at at least one end in the longitudinal direction, and a mounting member 30 connected to the main body member 10 using a screw 50 inserted into the hole 11 provided in the flange portion 12, is mounted on the inner surface of a box body 61 of an electrical equipment storage box 6. The mounting member 30 of the support component 1 includes a first piece 32 having a screw insertion hole 31 through which the shaft portion 51 of the screw 50 is inserted, a leg portion 33 extending from at least one end of the first piece 32 so as to protrude toward the longitudinal direction side of the main body member 10, and an abutment portion that abuts against the inner surface of the box body 61. The first piece 32 is disposed between the screw head 52 of the screw 50 and the flange portion 12, and the screw 50 is screwed into the hole 11 of the flange portion 12 with the main body member 10 fixed to the box body 61, thereby elastically deforming the mounting member 30. Therefore, even if the dimensions of the electrical equipment storage box 6 are not completely accurate, the support component 1 can be mounted. In other words, the mounting structure of the support component 1 mounted on the inner surface of the electrical equipment storage box 6 allows for freedom in the mounting position and can accommodate differences in mounting dimensions.

[0015] Normally, when screws are fastened together, spring washers are used to prevent the screws from loosening, but if a gap occurs between the connecting member (the flange portion 12 in this embodiment), the screw, and the spring washer, the spring washer may not function properly and the screw may become loose. If there is a gap due to a difference in the mounting dimensions caused by sheet metal tolerances, the number of spring washers must be increased to adjust so that no gap occurs.

[0016] On the other hand, with the above-mentioned configuration, after the support part 1 is elastically deformed, a force acts to return to the original shape, and loosening of the screw 50 can be suppressed. For example, as shown in Figs. 2 and 3, when the mounting member 30 of the support part 1 is installed so as to contact the back plate part 61a, when the screw 50 is screwed into the hole 11 of the flange part 12 to elastically deform the mounting member 30, the force is received by the abutment part that abuts against the back plate part 61a of the box body 61 and the leg part 33, and an elastic force acts to return the first piece 32 to the original shape. This makes it possible to prevent the screw 50 from loosening. In this way, by configuring the mounting member 30 to be elastically deformed, it is possible to accommodate differences in mounting dimensions without increasing the number of parts.

[0017] Examples of the support part 1 include a wiring support part that organizes the wiring of the devices stored inside the box body 61, and an internal equipment support part for mounting the internal equipment stored inside the box body 61. An example of the internal equipment support part is one that has a mounting rail shape, and specific examples include a rail for mounting the internal equipment, a rail for mounting a base plate on which the equipment is mounted, and a rail for mounting an LED lighting panel. Of course, other things may also be used. In the following, a wiring support part will be described as an example of the support part 1.

[0018] Support part 1, which is a wiring support part, is attached to an electrical equipment storage box 6. The electrical equipment storage box 6 of the embodiment includes a box body 61 having an opening, and a door 62 used to open and close the opening of the box body 61. As can be understood from Figs. 1 and 2, support part 1 is attached to the inner surface of the box body 61. In the example shown in Fig. 2, support part 1 is attached so as to fit along side plate part 61b of the box body 61, but support part 1 may be attached in other manners, such as along top plate part 61c, bottom plate part 61d, or back plate part 61a.

[0019] The support component 1 of the embodiment includes a main body member 10, a mounting member 30, and a screw 50. The main body member 10 of the example shown in Fig. 2 and Fig. 3 includes a plurality of holes 13. As can be understood from Fig. 2 and Fig. 3, the holes 13 can fix cable ties 91, and therefore the cable ties 91 fixed to the main body member 10 can be used to bundle the wiring of the devices stored inside the box body 61. In addition, since the hole 13 used to fix the cable ties 91 or the like can be selected, the position at which the wiring is bundled can be adjusted. Note that in the example shown in Fig. 2 and the like, a plurality of holes 13 are provided so as to be aligned in the longitudinal direction of the main body member 10.

[0020] 2 and 3, one end in the longitudinal direction of the main body member 10 is fixed to the peripheral portion 61e of the front opening of the box body 61. The main body member 10 is fixed to the box body 61 in this state, but as can be seen from FIG. 4, by screwing in the mounting member 30 located at the other end of the main body member 10 and the screw 50 that connects the main body member 10, the main body member 10 becomes supported by the peripheral portion 61e and the back plate portion 61a.

[0021] Here, a description will be given of the main body member 10, which is a component of the support part 1. In the example shown in Figures 5 and 6, one end in the longitudinal direction is provided with a fixing hole 14 that functions as a fixing part for fixing to the peripheral edge part 61e. In this example, the main body member 10 is fixed with a screw 81 using a mounting hole 61f that is opened so as to penetrate the peripheral edge part 61e of the box body 61 in the left-right direction (see Figure 4).

[0022] The other end of the main body member 10 in the longitudinal direction is provided with a flange portion 12. This flange portion 12 extends in the inner direction of the box body 61. The flange portion 12 shown in FIG. 6 and the like forms a surface extending approximately perpendicular to the longitudinal direction of the main body member 10. The flange portion 12 is provided with a hole 11 for screwing in the screw 50, and in the embodiment, the hole 11 is formed with a female thread by tapping. Note that the hole 11 provided in the flange portion 12 does not need to be tapped in advance. For example, if a tapping screw is used to screw the screw 50 into the flange portion 12, the flange portion 12 and the screw 50 can be screwed together.

[0023] Next, the mounting member 30, which is a component of the support part 1, will be described. The mounting member 30 can provide a supporting force to the main body member 10. In the example shown in Fig. 7 to Fig. 9, the mounting member 30 is generally U-shaped when viewed from the side. The mounting member 30 is provided with a first piece 32 having a screw insertion hole 31 through which a shaft portion 51 of a screw 50 is inserted. Note that the screw insertion hole 31 is sized so that the screw head 52 of the screw 50 cannot pass through, and therefore, as the screw 50 is tightened, a force is applied from the screw head 52 to the first piece 32.

[0024] First piece 32 has a leg 33 extending from one end thereof. In the example shown in Fig. 9, first piece 32 and leg 33 are connected to each other at an obtuse angle, but other configurations are also possible, such as first piece 32 and leg 33 being connected to each other at a right angle.

[0025] 7 to 9, the second piece 34 is provided at a position opposite to the first piece 32 and is connected to the leg 33. In the embodiment, the second piece 34 is an abutting portion that abuts against the back plate portion 61a of the box body 61. In this example, the second piece 34 and the leg 33 are connected to each other at a substantially right angle, and the first piece 32 and the leg 33 are connected to each other at an obtuse angle. Even if the screw 50 is tightened and a force is applied to the first piece 32 when the second piece 34 is positioned along the back plate portion 61a, the mounting member 30 can be elastically deformed. Therefore, the mounting member 30 can be arranged to fill the gap between the back plate portion 61a of the housing and the flange portion 12 of the main body member 10.

[0026] Furthermore, when the mounting member 30 undergoes elastic deformation, a force is applied to the screw head 52 of the screw 50 from the first piece 32, causing the threads of the screw 50 to come into close contact with the threaded portion of the flange portion 12. This makes it possible to prevent the screw 50 from loosening and coming off the flange portion 12.

[0027] In the embodiment, the main body member 10 is fixed between the fixing hole 14 and the peripheral portion 61e of the box body 61 by a screw, but the end side having the flange portion 12 on the other side of the fixing hole 14 is not in contact with the back plate portion 61a of the box body 61. When the screw 50 is screwed into this flange portion 12, the main body member 10 can be moved slightly toward the opening peripheral portion 61e. This allows for fine adjustment.

[0028] As can be understood from these descriptions, by placing the first piece 32 between the screw head 52 of the screw 50 and the flange portion 12, and screwing the screw 50 into the hole 11 of the flange portion 12 with the main body member 10 fixed to the box body 61, the mounting member 30 comprising the first piece 32, the leg portion 33 and the abutment portion is elastically deformed, making it possible to mount the support part 1 to accommodate differences in mounting dimensions with a simple configuration that limits the number of parts.

[0029] Incidentally, it is preferable that the first piece 32 is configured so that the distance between the first piece 32 and the flange portion 12 gradually increases from the end connected to the leg portion 33 to the other end before the screw 50 is screwed in. In this way, it is possible to apply elastic force in a state in which the flange portion 12 and the first piece 32 are substantially parallel to each other, so that when the screw 50 is screwed in, a gap is unlikely to be generated between the seat surface of the screw head 52 and the first piece 32, making it more difficult for the screw 50 to loosen. This is because the frictional resistance increases when the seat surface of the screw head 52 and the first piece 32 are substantially parallel to each other. Note that, although the configuration is as described above before the screw 50 is tightened, the difference in the distance becomes smaller when the screw 50 is screwed into the hole 11 of the flange portion 12 (see FIG. 10).

[0030] 7 to 9, a screw receiving piece 35 is formed which can come into contact with the screw tip 53 of the screw 50 inserted into the screw insertion hole 31. When the screw receiving piece 35 is provided on the mounting member 30, the rotating screw 50 does not directly abut against the back plate portion 61a of the box body 61, etc., so that it is possible to prevent the mounting position of the support part 1 from shifting. In the mounting member 30 shown in Figs. 7 to 9, the screw receiving piece 35 is provided on the second piece 34, but is formed in a position on the second piece 34 facing the screw insertion hole 31.

[0031] As can be understood from this, it is preferable that the mounting member 30 has a second piece 34 connected by legs 33 so as to face the first piece 32, and that the second piece 34 has a screw receiving piece 35 that deforms due to movement of the screw tip 53 when the screw 50 attached to the hole 11 in the flange portion 12 is screwed into the hole 11.

[0032] The screw receiving piece 35 shown in Figures 7 and 8 is configured in a tongue shape. This screw receiving piece 35 is formed by making a substantially U-shaped cut in a part of the second piece 34, and can be deformed when force is applied to the screw receiving piece 35 from the tip of the screw 50. Therefore, when the screw tip 53 comes into contact with the screw receiving piece 35 and force is applied to it, the screw receiving piece 35 can be deformed so as to bite into the back plate portion 61a of the box body 61 (see Figure 11). By deforming it in this way, it is possible to further prevent the mounting position of the support part 1 from shifting.

[0033] 7 to 9, the screw receiving piece 35 is provided with a protrusion 36 that protrudes outward from the mounting member 30. If the screw receiving piece 35 is provided with a protrusion 36 that protrudes toward the inner surface of the box body 61, the protrusion 36 can be caused to bite into the inner surface of the box body 61 by screwing the screw 50 into it.

[0034] 3, when the support part 1 is attached, the rear plate part 61a of the box body 61 comes into contact with the protrusion part 36. If the protrusion part 36 is caused to bite into the rear plate part 61a, the support part 1 can be attached more firmly.

[0035] Furthermore, if the protrusion 36 is made to function to break the paint film of the box body 61 and also to function as a conductive part, it is possible to ensure electrical continuity between the mounting member 30 and the box body 61 at the same time as the mounting of the support part 1. The portion that functions as a conductive part does not need to be provided on the screw receiving piece 35. For example, a protrusion that functions as a conductive part may be provided on a location other than the screw receiving piece 35 of the second piece 34. In this case, it is preferable that the protrusion be formed to have approximately the same length as the protrusion 36 or longer than the protrusion 36. In any case, it is preferable that the abutting part is provided with a conductive part that allows electrical continuity with the electrical device storage box 6.

[0036] The screw 50 that connects the main body member 10 and the mounting member 30 is a male screw, and in this embodiment, it is the flange portion 12 that screws into this screw 50, and the mounting member 30 is not screwed into it. Since the mounting member 30 is not screwed into the male screw 50, the mounting member 30 can easily change direction with respect to the male screw 50. Therefore, even if the mounting member 30 is elastically deformed, it will not bite into the screw 50.

[0037] Here, an example of mounting the support part 1 to the box body 61 of the electrical device storage box 6 will be specifically described. The fixing portion of the main body member 10 is fixed to the mounting hole 61f provided in the peripheral portion 61e of the box body 61. In this state, the position of the main body member 10 is determined. The first piece 32 of the mounting member 30 is positioned between the screw 50 and the flange portion 12, and the second piece 34 is arranged so as to face the back plate portion 61a of the box body 61. Thereafter, the shaft portion 51 of the screw 50 is passed through the screw insertion hole 31 of the first piece 32, and the screw 50 is screwed into the hole 11 of the flange portion 12.

[0038] When the screw 50 is turned, the screw head 52 comes into contact with the first piece 32. When the screw 50 is turned further, the first piece 32 moves and the mounting member 30 is elastically deformed. By continuing to turn the screw 50, a force is applied to the main body member 10 in the direction of the fixed part due to the screw engagement. In this way, by utilizing the force acting in the direction of the second piece 34 (towards the rear plate part 61a) and the force acting in the direction of the fixed part (towards the peripheral part 61e of the front opening), the support part 1 can be attached in a braced manner.

[0039] Furthermore, when the screw 50 is rotated so that the screw tip 53 comes into contact with the screw receiving piece 35 of the second piece 34, and the screw 50 is then further rotated, the screw receiving piece 35 is deformed.

[0040] Next, examples of other configurations will be described. In the example shown in Fig. 12 and Fig. 13, the mounting member 30 has a generally rectangular shape in side view. More specifically, legs 33 extend generally parallel from both opposing ends of a first piece 32, and a second piece 34 is provided that is connected to the legs 33 and faces the first piece 32. The second piece 34 serves as an abutment portion that abuts against the inner surface of the box body 61.

[0041] Even in this case, the mounting member 30 is elastically deformable. When force is applied from the screw head 52 of the screw 50 to the first piece 32, the mounting member 30 elastically deforms, thereby preventing the screw 50 from loosening. In addition, the second piece 34, which serves as the abutment portion, abuts against the inner surface of the box body 61, thereby preventing the support part 1 from shifting when screwed together.

[0042] By configuring the second piece 34 to have a screw receiving piece 35 against which the screw tip 53 of the screw 50 can come into contact, and by deforming the screw receiving piece 35 so as to bite into the inner surface of the box body 61 when the screw 50 is screwed, it is possible to prevent the support part 1 from shifting. Also, by providing a protrusion 36 on the screw receiving piece 35, it is possible to concentrate the force of screwing on the protrusion 36, which can bite into the back plate part 61a of the box body 61, etc. This makes it difficult for the support part 1 to shift.

[0043] Other examples will be described. The mounting member 30 in the example shown in Fig. 14 and Fig. 15 is U-shaped in side view by configuring the legs 33 to extend from both ends of the first piece 32. In this case, the tips of the legs 33 become abutting parts that abut against the inner surface of the box body 61. Even in this case, the mounting member 30 is elastically deformable. When forming a conductive part, it is sufficient to form a convex part at the tip of the leg 33. Since the rest is the same as the example described above, detailed description will be omitted.

[0044] In the examples described so far, the support part 1 has a flange portion 12 formed at one end of the main body member 10 having a fixing hole 14 functioning as a fixing part at the other end in the longitudinal direction, and the flange portion 12 and the mounting member 30 are attached with a screw 50, but the support part 1 may have flange portions 12 formed at both ends in the longitudinal direction, and the mounting members 30 may be connected to the respective flange portions 12. With such a shape, the support part 1 can also be attached by being braced between the left and right side plate portions 61b.

[0045] Even in such a case, the support part 1 does not need to be attached along the back plate part 61a. The direction in which the support part 1 extends may be freely selected from the front-rear direction, the left-right direction, the up-down direction, etc. For example, if the support part 1 is attached by being pushed up between the top plate part 61c and the bottom plate part 61d at the top and bottom, the position in the front-rear direction or the left-right direction can be freely selected.

[0046] Although the present invention has been described above by taking the embodiment as an example, the present invention is not limited to the above embodiment and can be embodied in various ways. For example, the mounting member can be configured to have an L-shaped cross section composed of a first piece and a leg portion extending from one end of the first piece. [Explanation of symbols]

[0047] 1 Support parts 6 Electrical equipment storage boxes 10 Body material 11 holes 12 Flange 30 Mounting material 31 Screw insertion hole 32 First piece 33 Legs 35 Screw receiving piece 36 Protrusion 50 Screw 51 Shaft 52 Screw head 53 Screw tip 61 Box body

Claims

1. A mounting structure for a support component, which includes a main body member having a flange portion with a hole at at least one end in a longitudinal direction, and a mounting member connected to the main body member by using a screw inserted into a hole provided in the flange portion, and which mounts the support component to an inner surface of a box body of an electrical equipment storage box, The mounting member includes a first piece having a screw insertion hole through which a shank of a screw is inserted, a leg portion extending from at least one end of the first piece so as to protrude toward the longitudinal direction of the main body member, and an abutment portion abutting against an inner surface of the box body; The first piece is disposed between the head of the screw and the flange portion, and the first piece before the screw is screwed is configured such that the distance between the first piece and the flange portion gradually increases from the end connected to the leg portion to the other end, With the main body member fixed to the box body, a screw is screwed into a hole in the flange portion, causing the screw to press against the first piece, thereby elastically deforming the mounting member so that the difference in distance becomes smaller, thereby preventing the screw from loosening.

2. 2. The mounting structure for a support part as described in claim 1, wherein the mounting member has a second piece connected by a leg portion so as to face the first piece, and the second piece has a screw receiving piece that deforms due to movement of the tip of the screw when the screw attached to the hole in the flange portion is screwed into the hole.

3. 3. The mounting structure for a support part according to claim 2, wherein the screw receiving piece is formed with a projection that projects toward the inner surface of the box body.

4. 4. The mounting structure for a supporting part according to claim 1, wherein the contact portion is provided with a conductive portion that allows electrical connection with the electrical device storage box.

5. 5. An electrical equipment storage box comprising the support part mounting structure according to claim 1.

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