JPH03155315A - Mounting structure for electric connection box to car body or the like - Google Patents

Abstract

PURPOSE:To suppress wearing in pivotal supporting point part by externally inserting a metal-made collar to a shaft member for pivotably fixing one side of an electric connection box. CONSTITUTION:In one end of an insulating case 1 in an electric connection box A, a boss 5, which serves as a shaft member, is projected in both side walls of the case 1, and a metal-made collar 6 is externally inserted to the boss 5. A receiving seat 6a is peripherally provided in one end of the collar 6 with a stopper pawl 6b formed in the other end, when the collar 6 is externally inserted to the boss 5, the stopper pawl 6b is engaged with a flange part 5a in an end face of the boss to prevent falling off. While in the electric connection box A, the boss 5, to which the collar 6 is externally inserted, is mounted to a bearing part 9d via introducing parts 9b, 9c from an opening part 9a in a bearing groove 9 of a bracket 8, and one side of the box A is turnably supported. Thus by protecting the boss 5 by the collar 6, wearing can be prevented even when the electric connection box A is repeatedly pivoted in the case of mounting or maintenance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a mounting structure for fixing an electrical connection box used for interconnecting wire harnesses to a vehicle body or the like.

[Conventional technology]

An electrical junction box has generally been attached to a vehicle body or the like by fixing both sides of the box body to brackets provided facing a wall surface by tightening bolts or the like.

However, it is difficult to install in a narrow engine room or instrument panel, and it is inconvenient to inspect or replace installed electrical components such as relays and fuses.
Poor maintainability.

Therefore, a structure has been devised in which one side of the electrical junction box can be rotatably mounted and the other side can be fixed with a single touch.

Figures 6 and 7 show one side of such a mounting structure.

The electrical connection box 10 includes a plurality of fuses 1) and relays 12.
, a circuit breaker 13, and other electrical components are installed. This electrical connection box IO has a mounting piece 1 having a locking frame 16 on the negative side and a bearing hole 15 having a swan 15a on the other side.
It has 4. On the other hand, a pair of brackets 17 and 17' are provided on the panel P of the automobile, and a shaft member 18 is provided protruding from the end of one of the brackets 17.

The electrical connection box 10 is installed by attaching the shaft member 18 from the swan 15a to the bearing hole 15 on one side of the bracket 17, rotatably attaching it, rotating it in the direction of the arrow, and attaching it to the locking frame 16 on the other side. This can be easily done by inserting the bracket 17' into the bracket 17'.

The same applies to the case where the shaft member 18 is provided in the electrical connection box 10 and the bearing hole 15 is provided in the bracket 17.

[Problem to be solved by the invention]

In the conventional mounting structure shown in Figures 6 and 7, the bracket)
17 and 17' are generally made of metal such as netting, and the electrical junction box 1O is made of synthetic resin, and if they are rotated repeatedly each time maintenance is performed, the fulcrum part, especially the bearing hole 15 (or shaft member 18), will wear out. , looseness occurs in the fitting part.

Furthermore, it is inevitable that a gap (clearance) will necessarily occur between the shaft member 18 constituting the fulcrum portion and the bearing hole 15 due to the dimensional tolerances of each member.

Therefore, the driving and vibrations of the automobile cause unpleasant noises to be generated.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to suppress the wear of the rotational fulcrum part in a structure for fixing an electrical connection box to a vehicle body, etc., and to prevent rattling and abnormal noise caused by dimensional tolerances, etc. The objective is to provide a mounting structure that allows for

[Means to solve the problem]

In order to achieve the above object, as claimed in claim 1,
In the present invention, a pair of brackets are provided facing each other on a wall surface such as a vehicle body or a panel, one bracket is provided with a bearing portion, and a bearing material protruding from one side of an electrical connection box is rotated in the bearing portion. In the mounting structure in which the electric junction box is movably inserted and the other side of the electric junction box is fixed to the other bracket, a metal collar is fitted onto the shaft member.

This metallic collar, as claimed in claim 2.3,
It is preferable to provide a locking means between the shaft member and to provide springiness in the circumferential direction.

[For production]

According to the present invention, a metal collar is attached to the shaft member for rotatably fixing one side of the electrical junction box, so that there is no direct contact with the bearing part and it is protected, thereby preventing wear. be done.

Additionally, by giving the collar elasticity in the circumferential direction, gaps due to dimensional tolerances between the collar and the bearing can be absorbed.
There is no rattling and the generation of abnormal noise can be prevented.

Hereinafter, the above configuration and operation will be specifically explained with reference to drawings showing examples.

〔Example〕

FIG. 1 is a perspective view of the mounting structure according to the present invention, FIG. 2 is an enlarged exploded perspective view of the pivot portion of the same as above, and FIG. 3 is a sectional view of the mounting state shown in FIG. 2.

In these figures, ■ indicates the insulation case of electrical junction box A;
Reference numeral 8 indicates a bracket that rotatably supports one side of the electrical connection box.

The brackets 8 are of a sheet metal type, and are arranged opposite to each other via a connecting plate part 8a, and each bracket 8 has a bearing groove 9.
has been established. This bearing groove 9 is formed into a substantially dogleg shape with an inclined introduction part 9b following an opening 9a and a folded introduction part 9c ending at a circular bearing part 9d. This bracket 8 is fixed in advance to a vehicle body (not shown) by bolting or the like.

In the electrical junction box A, various insertion parts such as a fuse insertion part 2 having a plurality of fuse insertion holes 2a, a relay insertion part 3, and a connector insertion part 4 are formed on the upper surface of the insulating case 1. ing. At one end of the insulating case l, a boss 5 as a shaft member is provided protruding from both side walls, and a metal collar 6 is fitted onto the boss. A catch seat 6a is provided around one end of the collar 6, and a locking pawl 6b is formed at the other end, and when the collar 6 is inserted onto the boss 5, the locking pawl 6b engages with the flange 5a on the end face of the boss. Throughput is prevented.

In the above configuration, the electrical junction box A is constructed by inserting the boss 5 with the collar 6 inserted into the bearing part 9d from the opening 9a in the bearing groove 9 of the bracket 8 through the introduction parts 9b and 9c, so that the - side thereof can be rotated. movably pivoted.

In this state, the boss 5 is protected by the collar 6, so when installing or maintaining the electrical junction box A.
Wear is prevented even after repeated rotations.

In addition, on the other side of the electrical junction box A, fix the mounting plate 7 provided on the other end side of the insulating case 1 to the bracket (not shown) provided on the side opposite to the brackets 8, 8 with bolts B etc. Bye.

FIG. 4 is an exploded perspective view of main parts showing another embodiment of the present invention;
FIG. 5 is a sectional view of the attached state.

The collar 6' shown in this embodiment has a locking claw 6b and a slit 6C extending in the axial direction on its outer peripheral wall. Further, a buffering rib 5b is provided around the central portion of the boss 5 to lift the collar 6' from the outer peripheral surface of the boss 5.

As shown in FIG. 5, the collar 6' fitted onto the boss 5 is prevented from being removed by engaging the collar 5a with its locking claw 6b, and the lip 5b is inscribed in the collar 6'. , a gap V is formed between the boss 5 and the collar 6'.

Here, the outer diameter Φ of the collar 6' and the bearing part 9d of the bearing groove 9 are
By forming the inner diameter Φ8 in advance to Φ, 〉Φ8, the collar 6' is given elasticity in the circumferential direction by the slit 6C, so that it can be elastically fitted into the bearing part 9d. Become.

That is, as the tip of the rib 5b is crushed, the collar 6' is elastically displaced within the range of the gap (2), and the bearing part 9d
and in rotatable elastic contact.

As a result, backlash due to dimensional tolerance between the boss 5 and the bearing groove 9 is absorbed, making it possible to prevent abnormal noise and wear of the boss 5 at the same time.

〔Effect of the invention〕

As explained above, according to the present invention, in a structure in which one side of an electrical connection box is rotatably mounted, wear of the rotational fulcrum part is prevented, and the occurrence of rattling and abnormal noise due to dimensional tolerances, vibrations of automobiles, etc. can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the mounting structure of the present invention, Fig. 2 is an enlarged exploded perspective view of the pivot portion of the same as above, Fig. 3 is a sectional view of the mounting state shown in Fig. 2, and Fig. 4 Figure 5 is an exploded perspective view of the main parts showing another embodiment of the present invention, Figure 5 is a sectional view of the attached state shown in Figure 4, Figure 6 is an explanatory diagram of the conventional mounting structure, and Figure 7 is the 6th FIG. 3 is an exploded perspective view of the rotation fulcrum portion in the figure. A... Electrical junction box, 1... Insulating case, 5... Boss, 5b... Lip, 6, 6'... Color 6b...
・Latching claw, 6C...slit, 8...bracket,
9...Bearing groove.

Claims (3)

[Claims] (1) A pair of brackets is provided facing the wall surface of the vehicle body, panel, etc., one bracket is provided with a bearing part, and a bearing material protruding from one side of the electrical junction box is rotatably inserted into the bearing part. 1. A mounting structure for mounting an electrical junction box on a vehicle body, etc., characterized in that a metal collar is extrapolated onto the shaft member, in the mounting structure for fixing the other side of the electrical junction box to the other bracket. (2) The mounting structure according to claim 1, wherein a flange is formed at the end of the shaft member, and a locking pawl that engages with the flange is provided at the outer end of the collar. (3) At least one slit extending in the axial direction is formed in the outer peripheral wall of the collar to provide springiness in the circumferential direction, and a rib inscribed in the collar is provided around the center of the shaft member. Mounting structure in item 1 or 2.