JP2573696B2 - Mounting structure of the electric junction box on the car body - Google Patents

Description

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

[Conventional technology]

In general, the electric connection box has been attached to a vehicle body or the like by fixing the box body to a bracket provided on both sides of the box so as to face the wall surface by bolting or the like.

However, installation work in a narrow engine room or instrument panel is difficult, and it is inconvenient to check or replace mounted electric components, for example, relays and fuses, and the maintenance is poor.

Therefore, a structure in which one side of the electric connection box is rotatably mounted and the other side is fixed with one touch has been devised.

6 and 7 show an example of such a mounting structure. The electrical connection box 10 is mounted with electrical components such as a plurality of fuses 11, relays 12, and circuit breakers 13. The electric connection box 10 has a mounting piece 14 provided with a locking frame 16 on one side and a bearing hole 15 having a slit 15a on the other side. 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 protruded from an end of one bracket 17.

Attachment of the electric connection box 10 is performed by mounting the shaft member 18 in the bearing hole 15 from the slit 15a on the one bracket 17 side so as to be rotatable, rotating in the direction of the arrow, and attaching the bracket to the other locking frame 16. It can be done simply by inserting 17 '. The same applies to the case where the shaft member 18 is provided in the electric connection box 10 and the bearing hole 15 is provided in the bracket 17 and vice versa.

[Problems to be solved by the invention]

In the conventional mounting structure shown in FIGS.
7, 17 'are generally made of metal such as steel, and the electric connection box 10 is made of synthetic resin. When the electric connection box 10 is repeatedly rotated at each maintenance, the fulcrum, especially the bearing hole 15 (or the shaft member 18) is worn. , Rattling occurs at the fitting portion.

In addition, a clearance (clearance) is always required between the shaft member 18 and the bearing hole 15 constituting the fulcrum due to the dimensional tolerance of each.
Is inevitable. Therefore, driving a car,
The vibration may cause unpleasant noise.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in a structure for fixing an electric junction box to a vehicle body or the like, it is necessary to suppress abrasion of a rotation fulcrum and to prevent rattling and abnormal noise due to dimensional tolerances and the like. It is an object of the present invention to provide a mounting structure that can perform mounting.

[Means for solving the problem]

In order to achieve the above object, according to the present invention, a pair of brackets facing a wall of a vehicle body or a panel are provided, and a bearing is provided on one of the brackets. In a mounting structure in which a shaft member integrally projecting from one side of a synthetic resin electric connection box is rotatably inserted into a bearing portion and the other side of the electric connection box is fixed to the other bracket, A metallic collar is extrapolated, and at least one slit extending in the axial direction is provided in the outer peripheral wall of the collar to provide spring properties in the circumferential direction, and the shaft member is provided with an annular rib inscribed in the collar. Is characterized by the fact that
Further, as described in the second aspect, an elastic locking claw formed at an outer end of the collar is engaged with a flange formed at an end of the shaft member.

(Operation)

According to the present invention, a metal collar is extrapolated to a shaft member made of a synthetic resin material for rotatably fixing one side of the electric connection box, so that the shaft member is protected without direct contact with the bearing portion. Therefore, wear is prevented.

In addition, since the collar is provided with a spring property in the circumferential direction, a gap due to a dimensional tolerance or the like with respect to the bearing portion is absorbed, so that there is no backlash and generation of abnormal noise can be prevented.

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

〔Example〕

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

In these drawings, reference numeral 1 denotes a synthetic resin insulating case of the electric connection box A, and reference numeral 8 denotes a bracket that rotatably supports one side of the electric connection box.

The brackets 8 are made of sheet metal and are opposed to each other via a connecting plate portion 8a.
Has been established. The bearing groove 9 has an inclined introduction portion 9b following the opening 9a and a folded introduction portion 9c ending with a circular bearing portion 9d.
Thus, it is formed in a substantially U-shape. The bracket 8 is fixed to a vehicle body (not shown) in advance by bolting or the like.

In the electrical junction box A, on the upper surface of the insulating case 1, various insertion portions such as a fuse insertion portion 2 having a plurality of fuse insertion holes 2a, a relay insertion portion 3, and a connector insertion portion 4 are formed. ing. At one end of the insulating case 1, bosses 5 are integrally protruded from both side walls as shaft members.
A metal collar 6 is extrapolated to the boss. A receiving seat 6a is provided around one end of the collar 6, and an elastic locking claw 6b is formed by bending the elastic locking claw 6b inward at the other end. It is displaced by the elasticity, gets over the flange 5a on the end face of the boss, and returns and engages with the flange 5a, thereby preventing the boss from coming off.

In the above configuration, the electric junction box A is configured such that the boss 5 with the collar 6 extrapolated is inserted into the bearing 9d from the opening 9a in the bearing groove 9 of the bracket 8 through the introduction portions 9b and 9c.
One side thereof is rotatably supported.

In this state, since the boss 5 is protected by the collar 6, even when the electric junction box A is repeatedly rotated during mounting or maintenance, wear is prevented.

Note that the other side of the electric connection box A is fixed with a bolt B or the like to a mounting plate 7 provided on the other end side of the insulating case 1 to a bracket (not shown) provided on the side opposite to the brackets 8,8. I just need.

FIG. 4 is an exploded perspective view of a main part showing another embodiment of the present invention, and FIG. 5 is a sectional view of an attached state thereof.

The collar 6 'shown in this embodiment has a slit 6c extending in the axial direction on the outer peripheral wall thereof together with the locking claw 6b.
At the center of the boss 5, a cushioning rib 5b for floating the collar 6 'from the outer peripheral surface of the boss 5 is provided.

As shown in FIG. 5, a collar 6 'extrapolated to the boss 5
The locking claw 6b engages with the flange portion 5a to prevent the collar 5a from coming off, the rib 5b is inscribed in the collar 6 ', and a gap V is formed between the boss 5 and the collar 6'.

Here, the bearing portion 9d of the outer diameter [Phi _A and bearing groove 9 of the collar 6 '
By forming the inner diameter [Phi _B in advance Φ _A> Φ _B of are fitted from collar 6 'is springy in the circumferential direction is imparted by the slit 6c, the elastically the bearing portions 9d Will be. That is, while the tip of the rib 5b is crushed, the collar 6 'is elastically displaced within the range of the gap V and rotatably elastically contacts the bearing 9d.

As a result, the play due to the dimensional tolerance between the boss 5 and the bearing groove 9 is absorbed, and the occurrence of abnormal noise and the wear of the boss 5 can be prevented at the same time.

〔The invention's effect〕

As described above, the present invention provides a pair of brackets facing a wall surface of a vehicle body, a panel, or the like, a bearing portion provided on one bracket, and the bearing portion integrally formed on one side of a synthetic resin electric connection box. In a mounting structure in which a projecting shaft member is rotatably inserted and the other side of the electric connection box is fixed to the other bracket, a metal collar is extrapolated to the shaft member and axially attached to the outer peripheral wall of the collar. At least one slit is provided to provide spring properties in the circumferential direction, and the shaft member is provided with an annular rib that is inscribed in the collar. By avoiding the abrasion of the rotating fulcrum, it is possible to eliminate backlash and abnormal noise due to dimensional tolerances and vibration of the car, etc. Also, elastic locking formed on the outer end of the collar Collar formed at the end of the shaft member To by engaged, it is easy mounting of the collar is so elastic locking claws in the color at the time of mounting with respect to the shaft member engages automatically the flange.

[Brief description of the drawings]

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 point of the same, FIG. 3 is a cross-sectional view of the mounting state in FIG. FIG. 5 is an exploded perspective view of a main part showing another embodiment of the present invention. FIG. 5 is a cross-sectional view of the mounting state of FIG. 4, FIG. 6 is an explanatory view of a conventional mounting structure, and FIG. It is a disassembled perspective view of the rotation fulcrum part of the figure. A: Electric connection box, 1: Insulation case, 5: Boss, 5b
... Rib, 6, 6 '... Collar, 6b ... Locking claw, 6c ... Slit, 8 ... Bracket, 9 ... Bearing groove.

Claims (2)

(57) [Claims] 1. A pair of brackets facing a wall surface of a vehicle body or a panel are provided, and one of the brackets is provided with a bearing portion.
In a mounting structure in which a shaft member integrally projecting from one side of a synthetic resin electric connection box is rotatably inserted into the bearing portion and the other side of the electric connection box is fixed to the other bracket, A metal collar is extrapolated to the member, and at least one slit extending in the axial direction is formed in the outer peripheral wall of the collar to provide a spring property in the circumferential direction, and the shaft member is provided with an annular rib inscribed in the collar. A structure for mounting an electric junction box on a vehicle body or the like, characterized in that the electric connection box is mounted on the vehicle. 2. The body of an electric junction box according to claim 1, wherein an elastic locking claw formed at an outer end of the collar is engaged with a flange formed at an end of the shaft member. Mounting structure to etc.