JP2001186637A - Clamp fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp fitting structure which can be simply and surely fitted even when an ordinary clamp is used. SOLUTION: A clamp seat 26 is formed at a part of electric accessory elements accommodating case 12. The clamp seat 26 is provided with a through hole 16. A rib 25 is formed to surround the through hole 16 in the periphery of through hole 16. A clamp 17 for regulating a wire harness 15 is fitted to the through hole 16. In more detail, an engaging portion 18 provided at the end of the clamp 17 is inserted into the through hole 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp mounting structure.

[0002]

2. Description of the Related Art Conventionally, a wire harness provided in an automobile is focused on a clamp and fixed to a body directly or by an electric connection box or the like. Thereby, the clamp regulates the route of the wire harness. In addition, the wire harness is protected from heat, and the wire harness is prevented from being damaged by contact with the edge of the body.

[0003] As shown in FIG.
Is formed with a clamp seat 32 at a part thereof. The clamp seat 32 is provided with a through hole 33. Through hole 3
3 includes a clamp 34 for regulating the wire harness.
Are attached from outside the electrical component housing case 31. More specifically, the clamp 34 is attached to the clamp seat 32 by inserting the engaging portion 35 formed at the tip of the clamp 34 into the through hole 33.

[0004]

As shown in FIG. 4, the distance A1 between the lower end surface of the engaging portion 35 and the upper surface of the regulating plate 36 is
It is adjusted so as to have the same size as the plate thickness B1 of the clamp seat 32. In this case, the plate thickness B1 is smaller than the plate thickness of the other part of the electrical component housing case 31. Therefore, as shown in FIG. 5, the clamp seat 32 was easily deformed by the force for inserting the clamp 34. Therefore, it is difficult to insert the clamp 34 into the through hole 33, and the workability may be deteriorated. In addition, there is a possibility that the clamp 34 may be one-sided with respect to the clamp seat 32. In order to solve this problem, it is necessary to increase the thickness of the clamp seat 32 and use the corresponding clamp 34. However, since the clamp 34 was a special product, the cost was very high.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a clamp mounting structure that can easily and securely mount a general clamp even when a general clamp is used. It is in.

[0006]

According to the first aspect of the present invention, a clamp seat for attaching a clamp for regulating a wire harness is formed in a part of an electrical component housing case. In the clamp mounting structure in which the engaging portion at the tip of the clamp is inserted from the outside of the case into the through hole provided in the clamp seat, a reinforcing portion surrounding the through hole is formed in the clamp seat. Is the gist.

In the invention described in claim 2, the reinforcing portion is an annular rib, and the thickness of the portion where the rib is formed is set to be larger than the thickness of the portion other than the clamp seat. Make a summary.

[0008] In the invention described in claim 3, the rib is
The gist is that it is integrally formed on the outer wall surface of the case. Hereinafter, the “action” of the present invention will be described.

According to the first aspect of the present invention, the clamp seat is reinforced by the reinforcing portion. Therefore, the deformation of the clamp seat due to the force for inserting the clamp is prevented. Therefore, workability when inserting the clamp into the through hole can be improved.

According to the second aspect of the present invention, the rib is formed in an annular shape so as to cover the periphery of the clamp seat. Also,
The plate thickness of the rib is larger than the plate thickness of the clamp seat. Therefore, the deformation of the clamp seat can be more reliably prevented by the rib. Further, the rib can be easily formed integrally with the clamp seat.

According to the third aspect of the present invention, the rib is integrally formed on the outer wall surface of the electrical component housing case. For this reason, the cost for manufacturing the electrical component housing case can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric junction box embodying a clamp mounting structure according to the present invention will be described below in detail with reference to FIGS.

As shown in FIG. 1, an electrical component housing case 12 made of synthetic resin constituting the electrical junction box 11 has a substantially rectangular parallelepiped shape. The electrical component storage case 12 includes the upper case 1.
3 and a lower case 14. Each case 13,1
4 is assembled in a state of being vertically overlapped. On the upper surface of the upper case 13, a plurality of mounting portions 13b to which various electrical components such as relays and connectors can be mounted are provided. Electrical components (not shown) are mounted on portions corresponding to the mounting portions 13b. A wire harness 15 is connected to these mounting portions 13b. A lower surface 14a as a part of the outer wall surface of the lower case 14
Is provided with a circular through hole 16 communicating the inside and outside of the lower case 14.

A clamp 17 for regulating the wire harness 15 is inserted into the through hole 16. Clamp 17
Are formed by injection molding a synthetic resin. The clamp 17 includes an elastically deformable engaging portion 18, a disc-shaped regulating plate 19, and a binding portion 20. The regulating plate 19 comes into contact with the lower surface 14 a of the lower case 14. A connecting portion 21 is provided at the center of the upper surface of the regulating plate 19.
Are formed to protrude into the electrical component storage case 12. A pair of left and right engagement portions 18 are formed to extend obliquely from both sides at the tip of the connection portion 21. The engaging portion 18 is inserted inside the lower case 14. At each end of the engaging portion 18, a lock portion 22 is formed so as to protrude with a step. The lock portion 22 is inserted from the outside of the electrical component storage case 12 to the inside of the electrical component storage case 12. In addition, the regulating plate 19
A binding portion 20 for binding the wire harness 15 is formed at a central portion of the lower surface of the wire harness 15. Further, a disc-shaped regulating plate 19 is arranged in contact with the through hole 16 on the lower surface 14a of the electrical component housing case 12 in a state of contact with the through hole 16.

As shown in FIGS. 2A and 2B,
A portion near the through hole 16 on the lower surface 14 a of the lower case 14 serves as a clamp seat 26. A circular concave portion 27 is provided in the center of the clamp seat 26. The plate thickness T1 of the recess 27 is smaller than the plate thickness T2 of the electrical component housing case 12 excluding the recess 27. A circular through hole 16 is provided in the recess 27. The diameter of the through hole 16 is slightly smaller than the diameter of the recess 27.

The clamp seat 26 is formed integrally with a rib 25 as a reinforcing portion surrounding the through hole 16. The rib 25 is formed in an annular shape. The rib 25 protrudes from the lower surface 14 a of the electrical component storage case 12. The inner diameter of the rib 25 is substantially the same as the width of the engaging portion 18. The thickness T3 of the portion where the rib 25 is formed
Is set to be larger than the plate thickness T1 and the plate thickness T2. The position of the center axis of the rib 25 matches the position of the center axis of the through hole 16.

Next, a method of attaching the clamp 17 to the electric junction box 11 will be described. As shown in FIG. 1 and FIG. 2A, the clamp 17 is arranged below the electric connection box 11. Next, the wire harness 15 pulled out from the electrical component storage case 12 is bound to the binding portion 20. In this state, the engaging portion 18 of the clamp 17 is inserted into the through hole 16. As a result, as shown in FIG. 2B, the lock portion 22 abuts on the inner wall surface 23 at the peripheral edge of the through hole 16 in the electrical component housing case 12. Therefore, the clamp 17 is attached to the electric connection box 11.

Therefore, according to the present embodiment, the following effects can be obtained. (1) Clamp seat 26 in electrical component storage case 12
Is reinforced by surrounding the outer peripheral edge of the clamp seat 26 with the rib 25. Therefore, the clamp 17
Even if stress concentrates on the peripheral edge of the clamp seat 26 when inserting the clamp, the deformation of the clamp seat 26 is prevented. further,
The deformation of the through hole 16 is also prevented. Therefore, the clamp 17
Are smoothly inserted into the through holes 16. Therefore, the workability when attaching the clamp 17 to the electric connection box 11 can be improved.

(2) The rib 25 is formed in an annular shape so as to cover the periphery of the clamp seat 26. The thickness T of the rib 25
3 is larger than the plate thickness T2 other than the clamp seat 26. Therefore, the deformation of the clamp seat 26 is more reliably prevented.

(3) Lower surface 14a of electrical component housing case 12
, A rib 25 is integrally formed. Therefore, the cost for manufacturing the electrical component housing case 12 can be reduced.

(4) The rib 25 protruding from the outer peripheral edge of the clamp seat 26 is formed in an annular shape. With it,
The through hole 16 has a circular shape. Here, the through hole 16
The central axes of the ribs 25 coincide with each other. Therefore, even if the clamp 17 rotates in any direction about the connecting portion 21 as an axis,
The clamp 17 can be attached to the clamp seat 26.

The embodiment of the present invention may be modified as follows. -In the said embodiment, the rib 25 is the electrical component accommodation case 1
2 projecting from the lower surface 14a. In contrast, FIG.
As shown in FIG. 7, the rib 25 may be provided so as to protrude from the inner wall surface 23 of the electrical component storage case 12. With such a configuration, the clamp 17 is guarded by the rib 25 from an external impact or the like. Therefore, it is possible to prevent a direct force from being applied to the clamp 17.

In the above embodiment, the rib 25 is formed integrally with the lower surface 14a of the electrical component housing case 12. However, the rib 25 may be formed separately from the lower surface 14a of the electrical component housing case 12.

In the above-described embodiment, the rib 25 as the reinforcing portion is formed in an annular and continuous manner. However, the rib 25 may be formed discontinuously. In the above-described embodiment, the rib 25 is formed in an annular shape so as to surround the periphery of the engaging portion 18 of the clamp 17. On the other hand, the shape of the rib 25 may be other shapes such as a quadrangular cylindrical shape and a triangular cylindrical shape other than the annular shape.

In the above embodiment, the electrical component storage case 1
On the lower surface 14a side of the second 2, a rib 25 as a reinforcing portion was protruded. Instead, the peripheral edge of the clamp seat 26 may be formed as a hardened portion.

Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiments will be listed below together with their effects. (1) The clamp according to any one of claims 1 to 3, wherein the clamp is an elastically deformable engaging portion inserted into an inner wall side of the case, a disc-shaped regulating plate abutting on an outer wall surface of the case, And a binding portion for binding the wire harness on the side.

(2) A clamp seat for attaching a clamp for regulating a wire harness is formed in a part of the electrical component housing case, and a clamp at a tip end of the clamp with respect to a through hole provided in the clamp seat. An electric connection box in which a joining portion is inserted from the outside of a case, wherein a reinforcing portion surrounding the through hole is formed in the clamp seat.

(3) In claim 3, the rib is formed in an annular shape so as to surround the periphery of the engaging portion, and the center axis of the rib and the center axis of the through hole provided in the clamp seat are provided. Characterized in that they are arranged so as to coincide with each other. Therefore, according to the technical idea (3), the clamp can be attached to the clamp seat without being affected by the direction of the engaging portion.

[0029]

As described in detail above, according to the first aspect of the present invention, the workability in inserting the clamp into the through hole can be improved.

According to the second aspect of the present invention, the deformation of the clamp seat can be more reliably prevented by the rib. Further, the rib can be easily formed integrally with the clamp seat.

According to the third aspect of the present invention, it is possible to reduce the cost for manufacturing the electrical component housing case.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a clamp mounting structure according to an embodiment.

FIG. 2A is a cross-sectional view showing a state before a clamp is attached to a mounting portion, and FIG. 2B is a cross-sectional view showing a state after the clamp is mounted on the mounting portion.

FIG. 3 is a cross-sectional view showing a mounted portion and a clamp according to another example.

FIG. 4 is a cross-sectional view showing a mounted portion and a clamp according to a conventional technique.

FIG. 5 is a sectional view showing a problem in the related art.

[Explanation of symbols]

12: electrical component storage case, 14a: lower surface as a part of outer wall surface, 15: wire harness, 16: through hole, 17 ...
Clamp, 18 ... engaging part, 25 ... rib as reinforcing part,
26 ... Clamp seat.

Claims (3)

[Claims] 1. A clamp seat for attaching a clamp for regulating a wire harness is formed in a part of an electrical component housing case, and an engagement at a tip end of the clamp with a through hole provided in the clamp seat. A clamp mounting structure in which a portion is inserted from the outside of a case, wherein a reinforcing portion surrounding the through hole is formed in the clamp seat. 2. The method according to claim 1, wherein the reinforcing portion is an annular rib, and a thickness of a portion where the rib is formed is set to be larger than a thickness of a portion other than the clamp seat. The clamp mounting structure described. 3. The clamp mounting structure according to claim 2, wherein said rib is formed integrally with an outer wall surface of said case.