Wiring fixing structure and electrical equipment

Abstract

To provide a wiring fixing structure by which wirings can be stably fixed on an inner surface of housing while making processing easier and saving a space by a simple configuration.SOLUTION: A wiring fixing structure for fixing wirings disposed inside a housing on an inner surface of the housing, where a rectangular through-hole penetrating in a thickness direction is formed on a tabular part of the housing. The wiring fixing structure comprises: a rectangular hook part which protrudes from a first side of the through-hole toward a second side opposing the first side, on the inside of the through-hole; and a band member for tightly binding the hook part and the wirings. The band member has a band-like band part. In the case where a length in a protruding direction of the hook part is A, a gap between a tip part in a protruding direction of the hook part and the second side of the through-hole is B, a width of the band part in a direction orthogonal to a lengthwise direction of the band part is C, and a thickness of the band part is D, the hook part and the band member fulfill the relation of A≥C>B>D.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a wiring fixing structure and an electrical installation. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 10-229283 (Patent Document 1) discloses an electric wire bundling fixing structure. This electric wire bundling fixing structure includes a cable tie for bundling electric wires and a hook portion provided on a fixing surface for fixing the cable tie. The hook portion extends inward from a part of the edge of an opening provided on the fixing surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-229283 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 discloses an embodiment in which a cable tie stopper is provided at the tip of the hook to prevent the cable tie from slipping off once fastened. This cable tie stopper is formed by widening the tip of the hook or by bending the tip of the hook at a substantially right angle. Patent Document 1 also discloses another embodiment in which two openings are formed in the fixing surface so that the edge of one opening, where the hook is provided, faces the edge of the other opening.

[0005] While the two embodiments described above can prevent the cable tie from falling off the hooks, there are concerns that the shapes of the hooks may become more complex or the number of hooks may increase, resulting in increased time and effort required to process the hooks. Furthermore, in the other embodiment described above, two openings are arranged side by side on the fixing surface, which may take up a lot of space.

[0006] The present disclosure has been made to solve such problems, and the purpose of the present disclosure is to provide a wiring fixing structure that can stably fix wiring to the inner surface of a housing while facilitating processing and saving space through a simple configuration. [Means for solving the problem]

[0007] A wiring fixing structure according to one embodiment of the present disclosure is a wiring fixing structure for fixing wiring arranged within a housing to the inner surface of the housing. A rectangular through-hole penetrating the housing in the thickness direction is formed in a plate-like portion of the housing. The wiring fixing structure includes a rectangular hook portion protruding from a first side of the through-hole toward a second side opposite the first side inside the through-hole, and a band member for binding the hook portion and the wiring. The band member has a belt-like band portion. When the length of the hook portion in the protruding direction is A, the gap between the tip end portion of the hook portion in the protruding direction and the second side of the through-hole is B, the width of the band portion in a direction perpendicular to the length direction of the band portion is C, and the thickness of the band portion is D, the hook portion and the band member satisfy the relationship A≧C>B>D. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to provide a wiring fixing structure that can stably fix wiring to the inner surface of a housing while facilitating processing and saving space through a simple configuration. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic external view of an electrical facility to which a wiring fixing structure according to an embodiment is applied; [Figure 2] 2 is an enlarged view of a part of the internal configuration of the housing shown in FIG. 1. FIG. [Figure 3] 1. FIG. 4 is an enlarged view showing another part of the internal configuration of the housing shown in FIG. [Figure 4] 1A and 1B are diagrams illustrating a wiring fixing structure according to an embodiment. [Figure 5]10A to 10C are diagrams for explaining the procedure for fixing the wiring to the inner surface of the housing. [Figure 6] 10A to 10C are diagrams for explaining the procedure for fixing the wiring to the inner surface of the housing. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following, the same or corresponding parts in the drawings will be denoted by the same reference numerals, and their description will not be repeated in principle.

[0011] FIG. 1 is a schematic external view of electrical equipment to which a wiring fixing structure according to this embodiment is applied. As shown in FIG. 1, the electrical equipment 100 includes a rectangular parallelepiped housing 110. The housing 110 houses multiple electrical devices 40 and wiring 50. The multiple electrical devices 40 include, for example, electrical components such as a power converter, a capacitor, a reactor, and a control circuit, as well as a fan for cooling these electrical components. FIG. 1 shows the internal configuration of the electrical equipment 100 with a cover 112 provided on the front of the housing 110 open. Some of the electrical devices 40 and some of the wiring 50 are shown in FIG.

[0012] The wiring 50 includes power lines for electrically connecting the plurality of electrical devices 40 to each other, power lines for electrically connecting some of the electrical devices 40 to other electrical equipment installed outside the housing 110, and communication lines for exchanging various signals with each electrical device 40. These wirings 50 can be publicly known wirings.

[0013] Inside the housing 110, the wiring 50 is arranged using the gaps between the electric devices 40 and the housing 110, or the gaps between adjacent electric devices 40. In such a configuration, the wiring 50 may come into contact with the electric device 40 and be damaged. Alternatively, as the length of the wiring 50 increases, the weight of the wiring 50 may cause the wiring 50 to become detached from the electric device 40. Furthermore, the wiring 50 may interfere with the workability of performing maintenance on the electric device 40, impairing the workability.

[0014] In order to avoid these problems, it is desirable to fix the wiring 50 to the inner surface of the housing 110. In this embodiment, a wiring fixing structure for fixing the wiring 50 to the inner surface of the housing 110 is proposed.

[0015] Fig. 2 is an enlarged view of a portion of the internal configuration of the housing 110 shown in Fig. 1. Fig. 2 shows an area RGN1 in Fig. 1. As shown in Fig. 2, a plurality of wires 50 are arranged vertically from the ceiling portion of the housing 110 toward the electrical device 40. The plurality of wires 50 are communication lines for transmitting various signals to the electrical device 40. In a portion 30 of an inner wall 114 on the rear side of the housing 110, the plurality of wires 50 are bound together by a band member 2 and fixed to the inner wall 114.

[0016] FIG. 3 is an enlarged view of another portion of the internal configuration of the housing shown in FIG. 1. FIG. 3 shows region RGN2 in FIG. 1. As shown in FIG. 3, first ends of a plurality of wires 50 are connected to conductors 45 arranged inside the housing 110, and second ends are arranged rearward of the inner wall 114 through insertion openings 116 provided in the inner wall 114 on the rear side of the housing 110. The plurality of wires 50 are power lines for transmitting power. In a portion 30 of the inner wall 114 on the rear side of the housing 110, the plurality of wires 50 are bundled together by a band member 2 and fixed to the inner wall 114. In FIGS. 2 and 3, the band member 2 is, for example, a cable tie.

[0017] 4A and 4B are diagrams illustrating a wiring fixing structure according to the present embodiment. Fig. 4A is a plan view of plate-like portion 120 of housing 110. The wiring fixing structure according to the present embodiment includes hook portion 1 and band member 2.

[0018] As shown in Fig. 4(A), the hook portion 1 is provided on the plate-like portion 120 of the housing 110. In the example of Figs. 2 and 3, the hook portion 1 is provided on the plate-like portion of the inner wall 114 on the rear side of the housing 110. A through-hole 10 is formed in the plate-like portion 120 of the housing 110, penetrating in the thickness direction.

[0019] The through hole 10 is rectangular and has a first side 11 and a second side 12 that face each other, and a third side 13 and a fourth side 14 that face each other. The third side 13 and the fourth side 14 are perpendicular to the first side 11 and the second side 12.

[0020] The hook portion 1 is disposed inside a rectangular through-hole 10. The hook portion 1 has a shape that protrudes from a first side 11 toward a second side 12 of the through-hole 10. The hook portion 1 has a rectangular shape that is smaller than the rectangle that forms the through-hole 10. Gaps are formed between both end portions of the hook portion 1 in a direction perpendicular to the protruding direction and a third side 13 and a fourth side 14 of the through-hole 10. A gap 15 is formed between the tip portion of the hook portion 1 in the protruding direction and the second side 12. These gaps give the through-hole 10 a U-shape.

[0021] The hook portion 1 is configured to be flush with the plate-like portion 120 of the housing 110. The hook portion 1 can be formed by punching out the plate-like portion 120 of the housing 110.

[0022] Fig. 4(B) is a side view of the band member 2, and Fig. 4(C) is a plan view of the band member 2. As shown in Fig. 4(B) and Fig. 4(C), the band member 2 has a belt-shaped band portion 20 and a head portion 22.

[0023] The band portion 20 has a length sufficient to surround the plurality of wirings 50. The band portion 20 has a uniform thickness. The head portion 22 is connected to a first end portion in the longitudinal direction of the band portion 20, and has an insertion hole 24 formed therein to allow insertion of a second end portion in the longitudinal direction of the band portion 20.

[0024] 2 and 3, the hook portion 1 is arranged on the plate-like portion 120 so that its protruding direction coincides with the arrangement direction of the wiring 50. In FIG. 2, the hook portion 1 is arranged so that its protruding direction is vertical to the wiring 50 that is arranged vertically. In FIG. 3, the hook portion 1 is arranged so that its protruding direction is horizontal to the wiring 50 that is arranged horizontally. This allows the hook portion 1 to overlap with the wiring 50.

[0025] Band member 2 is inserted into U-shaped through-hole 10 surrounding hook portion 1, and is wound around hook portion 1 and wiring 50. In this state, by inserting the second end of band portion 20 into insertion hole 24 of head portion 22 and pulling the second end, wiring 50 and hook portion 1 can be tightly bound together. This allows wiring 50 to be fixed to plate-like portion 120 of housing 110.

[0026] In the above configuration, if the length of the hook portion 1 in the protruding direction is A, the size of the gap 15 between the tip portion of the hook portion 1 in the protruding direction and the second side 12 of the through hole 10 is B, the width of the band portion 20 in a direction perpendicular to the longitudinal direction of the band portion 20 is C, and the thickness of the band portion 20 is D, then the hook portion 1 and the band member 2 satisfy the relationship A≧C>B>D.

[0027] That is, the width C of the band portion 20 is equal to or less than the length A of the hook portion 1 in the protruding direction, and is greater than the size B of the gap 15 between the tip portion of the hook portion 1 and the second side 12 of the through hole 10. The thickness D of the band portion 20 is smaller than the size B of the gap 15 between the tip portion of the hook portion 1 and the second side 12 of the through hole 10.

[0028] By making the width C of the band portion 20 larger than the size B of the gap 15 between the tip portion of the hook portion 1 and the second side 12 of the through-hole 10, it is possible to prevent the band portion 20, which binds the wiring 50 and the hook portion 1 tightly, from slipping out of the hook portion 1 in the gap 15.

[0029] However, by making the size B of the gap 15 narrower than the width C of the band portion 20, there is a concern that it will be time-consuming to insert the band portion 20 into the U-shaped through-hole 10 and wind the band portion 20 around the hook portion 1 and the wiring 50. This raises concerns that the workability of fixing the wiring 50 to the inner surface of the housing 110 will be reduced.

[0030] Therefore, in this embodiment, the size B of the gap 15 between the tip portion of the hook portion 1 and the second side 12 of the through-hole 10 is made larger than the thickness D of the band portion 20, thereby preventing a decrease in workability. The procedure for fixing the wiring 50 to the inner surface of the housing 110 will be described below.

[0031] 5 and 6 are diagrams for explaining the procedure for fixing the wiring 50 to the inner surface of the housing 110. In Fig. 5 and Fig. 6, steps 1 (Fig. 5[1]) to 8 (Fig. 6[8]) are shown in order. In each step, a side view of the plate-shaped portion 120 of the housing 110 as seen from the side is shown on the left, and a plan view of the plate-shaped portion 120 of the housing 110 as seen from inside the housing 110 is shown on the right.

[0032] 5[1], in the first step, the band portion 20 of the band member 2 is bent into a U-shape so as to fit along the U-shaped through-hole 10 formed to surround the hook portion 1. The bent band member 2 is arranged so that the width direction of the band portion 20 is perpendicular to the plate-like portion 120 of the housing 110.

[0033] Next, in the second step (see FIG. 5[2]), a portion of the band portion 20 bent into a U-shape is inserted into the gap 15 between the tip of the hook portion 1 and the second side 12 of the through-hole 10. At this time, the thickness D of the band portion 20 is smaller than the size B of the gap 15, so the band portion 20 can be inserted into the gap 15.

[0034] In the third step (see FIG. 5[3]), the band portion 20 is further inserted into the through-hole 10. The band portion 20 is also inserted into the gaps on both sides of the hook portion 1.

[0035] Next, referring to Figure 5 [4], in the fourth step, with the band portion 20 inserted into the through-hole 10, the orientation of the band portion 20 is changed so that the band portion 20 stands upright relative to the plate-shaped portion 120 of the housing 110.

[0036] In the fifth step (see FIG. 6[5]), the width direction of the band portion 20 is made horizontal to the plate-like portion 120. As a result, the band portion 20 is rotated 90° from the state in the first step (FIG. 5[1]).

[0037] In a sixth step (see FIG. 6[6]), the band portion 20 is moved horizontally relative to the plate-like portion 120 so that one end of the band portion 20 in the width direction abuts against the first side 11 of the through-hole 10.

[0038] Next, as shown in FIG. 6[7], in the seventh step, the wiring 50 is arranged so as to overlap the hook portion 1.

[0039] Finally, in the eighth step (see FIG. 6[8]), the second end of the band portion 20 in the longitudinal direction is inserted into the insertion hole 24 of the head portion 22. With the band portion 20 wound around the wiring 50 and the hook portion 1, the second end of the band portion 20 is pulled. As a result, the wiring 50 and the hook portion 1 are tightly bound by the band portion 20, and as a result, the wiring 50 is fixed to the plate-like portion 120.

[0040] 5 and 6, the procedure for inserting the band portion 20 into the through hole 10 and then inserting the second end portion in the longitudinal direction of the band portion 20 into the insertion hole 24 of the head portion 22 is described. However, the procedure may also be such that the second end portion in the longitudinal direction of the band portion 20 is first inserted into the insertion hole 24 to form the band portion 20 into a link shape, and then the band portion 20 is inserted into the through hole 10.

[0041] As described above, according to the wiring fixing structure of this embodiment, the size B of the gap 15 between the tip portion of the hook portion 1 and the through hole 10 is made smaller than the width C of the band portion 20 of the band member 2, thereby preventing the band portion 20, which is used to tightly bind the wiring 50 and the hook portion 1, from slipping out of the hook portion 1 in the gap 15.

[0042] Here, as a first method for preventing the band portion 20 from slipping off the hook portion 1, a configuration in which a band slip-off prevention piece is provided at the tip of the hook portion 1 is considered, as described in Patent Document 1. Alternatively, as a second method, a configuration in which two hook portions 1 are arranged side by side so that the first sides 11 of the through holes 10 face each other is considered, as described in Patent Document 1.

[0043] However, in the first method, the band slip-off prevention piece is formed by widening the tip of the hook portion 1 or by bending the tip of the hook portion 1 at a substantially right angle, which results in a complex shape of the hook portion 1. Therefore, there is a concern that processing the plate-like portion 120 of the housing 110 will require time and effort.

[0044] Furthermore, although the second method makes it easier to process each hook portion 1 compared to the first method, it requires space to arrange two hook portions 1 side by side on the plate-like portion 120 of the housing 110. Furthermore, there is a concern that the increased number of hook portions 1 will require more time and effort to process the plate-like portion 120.

[0045] In contrast, in the present embodiment, as described above, by adjusting the size B of the gap 15 between the tip of a single hook 1 and the through-hole 10, it is possible to prevent the band portion 20 from slipping off the hook 1, thereby avoiding the shape of the hook 1 becoming complicated and the number of hooks 1 increasing. As a result, compared to the first and second methods described above, it is possible to reduce the time and effort required to process the plate-like portion 120 of the housing 110. Furthermore, in the present embodiment, a single hook 1 is sufficient, so a large amount of space does not need to be occupied by arranging multiple hooks 1.

[0046] Furthermore, in this embodiment, the size B of the gap 15 between the tip portion of the hook portion 1 and the through hole 10 is made larger than the thickness D of the band portion 20 of the band member 2, making it easier to insert the band portion 20 into the through hole 10, thereby preventing a decrease in workability when binding the hook portion 1 and the wiring 50 with the band member 2.

[0047] Furthermore, in this embodiment, the direction in which the wiring 50 is arranged is determined by the protruding direction of the hook portion 1, so that the position of the hook portion 1 in the housing 110 can be determined in advance based on the ideal arrangement state of the wiring 50 at the design stage of the electrical equipment 100. This makes it possible to use the hook portion 1 to instruct the worker assembling the electrical equipment 100 on the ideal arrangement direction of the wiring 50. This makes it possible to prevent variations in the arrangement state of the wiring 50 from occurring depending on the skill level of the worker.

[0048] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0049] 1 hook portion, 2 band member, 10 through hole, 11 first side, 12 second side, 13 third side, 14 fourth side, 15 gap, 20 band portion, 22 head portion, 24 insertion hole, 40 electrical equipment, 45 conductor, 50 wiring, 100 electrical equipment, 110 housing, 112 cover, 114 inner wall, 116 insertion port, 120 plate-shaped portion.

Claims

1. A wiring fixing structure for fixing wiring arranged inside a housing to an inner surface of the housing, a rectangular through-hole penetrating through the plate-like portion of the housing in a thickness direction; a rectangular hook portion that protrudes from a first side of the through hole toward a second side opposite to the first side inside the through hole; a band member for binding the hook portion and the wiring, The band member has a belt-shaped band portion, A wiring fixing structure in which, when the length of the hook portion in the protruding direction is A, the gap between the tip portion of the hook portion in the protruding direction and the second side of the through hole is B, the width of the band portion in a direction perpendicular to the length direction of the band portion is C, and the thickness of the band portion is D, the hook portion and the band member satisfy the relationship A>C>B>D.

2. The wire fixing structure according to claim 1 , wherein the hook portion is disposed so that the protruding direction coincides with the direction in which the wire is disposed.

3. The wiring fixing structure according to claim 1 or 2, wherein the hook portion is configured to be flush with the plate-like portion.

4. The wiring fixing structure according to claim 3 , wherein the hook portion is formed by punching the plate-like portion.

5. The housing and an electrical device housed in the housing; Wiring arranged inside the housing and connected to the electrical device; a wiring fixing structure for fixing the wiring to the inner surface of the housing, a rectangular through-hole penetrating through the plate-like portion of the housing in a thickness direction; The wiring fixing structure includes: a rectangular hook portion that protrudes from a first side of the through hole toward a second side opposite to the first side inside the through hole; a band member for binding the hook portion and the wiring, The band member has a belt-shaped band portion, When the length of the hook portion in the protruding direction is A, the gap between the tip portion of the hook portion in the protruding direction and the second side of the through hole is B, the width of the band portion in a direction perpendicular to the length direction of the band portion is C, and the thickness of the band portion is D, the hook portion and the band member satisfy the relationship A>C>B>D.

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