JPH0937437A - Wire fastening structure of electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable wire fastening structure of an electric connection box whereby the wires drawn out from the electric connection box are so fastened precisely to it that their abnormal vibrations are prevented and the generations of the abnormal sounds and their damages which are caused by the vibrations are eliminated. SOLUTION: A bent flexible grasping piece 5 is provided additionally on a sidewall 1a of a main body 1 of an electric connection box (A). Thereby, when the main body 1 is stored in a lower case 3, the flexible grasping piece 5 is so pressed on an inner wall 3c of the lower case 3 while they are stuck closely onto each other that wires 8 introduced into the inside of the flexible grasping piece 5 are taken up to be fastened to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire fixing structure for an electric junction box, which is mainly used for interconnecting wire harnesses of automobiles.

[0002]

2. Description of the Related Art As a conventional electrical junction box, for example,
In Japanese Utility Model Publication No. 3-106818, as shown in FIG.
An electrical junction box J is disclosed. The electric junction box J is composed of a lid b that covers the main body a and a lower lid c that is attached below the main body a. The electric connection box J has a plurality of electric wires for connecting to the electrical components d and the connectors e arranged in the main body a. f is led out to the outside through the wire drawing groove g provided on the side wall a ₁ of the main body a.

When such an electric junction box J is mounted on an automobile and used, since the electric wire f is only held by the holding band h, the electric wire d is not attached due to vibration of the vehicle body caused by traveling. A phenomenon of violent (violent vibration) occurs in the wire drawing groove e, the wire d is repeatedly hit against the wire drawing groove e, and abnormal noise is generated, or the insulation coating is worn or damaged due to friction between the wires d. Occurs, which causes a problem such as a failure in an electric circuit.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to prevent the abnormal vibration of the electric wire by accurately fixing the electric wire led out from the electric junction box. An object of the present invention is to provide a highly reliable electric wire fixing structure for an electric junction box that does not cause abnormal noise or damage to the electric wire due to the above.

[0005]

In order to achieve the above-mentioned object, the electric wire fixing structure for an electric connection box of the present invention is an electric connection box in which a main body of the electric connection box is housed in a case.
A curved flexible gripping piece is attached to the side wall of the main body, and when the main body and the case are assembled, the inner wall of the case presses the flexible gripping piece and tightens the wire introduced inside the flexible gripping piece. It is characterized by being fixed by fixing. It is preferable that the flexible gripping piece is a flexible gripping piece having a holding claw protruding inward.

According to the present invention, when the main body and the case are assembled, the flexible gripping piece provided on the main body is held in close contact with the inner wall of the case while being pressed, so that the electric connection box can be removed. The drawn-out electric wire is elastically tightened inside the flexible gripping piece, so that the electric wire does not vibrate violently even when the electric connection box is vibrated, and the so-called violent phenomenon of the electric wire is eliminated. Therefore, generation of abnormal noise and damage to the electric wire due to vibration are prevented. In particular, it is effective to provide a holding claw protruding inward at the free end of the flexible gripping piece.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific examples of the present invention will be described. FIG. 1 shows an electrical junction box A according to an embodiment of the present invention.
It is a perspective view which shows the state which opened. The electric junction box A is a main body 1 in which various electric parts are arranged and an electric circuit is housed.
And an upper case 2 which covers the upper side of the main body 1, and a lower case 3 which accommodates the main body 1 from below.

A plurality of electric components 4 such as a relay block are arranged in the main body 1, and a flexible gripping piece 5 curved inward is attached to one end of the side wall 1a. Flexible gripping piece 5
At its free end, a holding claw 5a protruding inward is provided. An electric wire introducing port 6 is provided at the other end of the side wall 1a, and a terminal connector (not shown) of the wire harness 7 introduced into the main body 1 through the electric wire introducing port 6 is connected to the electric component 4. is there.

On the other hand, a plurality of electric wires 8 are connected to each electric component 4 via another connector, and the electric wires 8 are bundled and routed inside the flexible gripping piece 5 to be flexed. It is arranged to be led out to the outside via the gripping piece 5. The upper case 2 is a cover for hermetically closing the main body 1, and both ends of the upper case 2 are locking hooks 9 for coupling and locking the lower case 3.
have.

The lower case 3 is a case for accommodating the main body 1 inside and attaching it to a structure such as a vehicle body. The outer wall 3a has a fixing portion 3b having a fixing hole 10 at a predetermined position. Is attached, and the upper case 2 is provided near the fixed portion 3b.
A locking projection 11 that engages with the locking hook 9 is provided.
Further, an electric wire drawing groove 12 is vertically provided in the outer peripheral wall 3a at a position corresponding to the vicinity of the flexible gripping piece 5 of the main body 1.

When the main body 1 is housed in the lower case 3, FIG.
As shown in, the flexible gripping piece 5 is in close contact with the inner wall 3c of the lower case 3, and the plurality of electric wires 8 gripped by the flexible gripping piece 5 are pressed in the direction of converging. Since the flexible gripping piece 5 is provided with the holding claw 5a at its free end, the bundled electric wire 8
Is tightened without separating from the inside of the flexible gripping piece 5.

The electric wire 8 held by the flexible holding piece 5 is led out to the outside through the electric wire drawing groove 12 of the lower case 3. After storing the main body 1 in the lower case 3, the upper case 2
The main body 1 is sealed between the upper case 2 and the lower case 3 by covering the upper case 2 and engaging the locking hook 9 of the upper case 2 with the locking projection 11 of the lower case 3.

[0013]

According to the present invention, since the flexible gripping piece provided on the main body is held in a state of being pressed between the flexible gripping piece and the inner wall of the case, the electric wire led out from the electric junction box is held by the flexible gripping piece. Even if the electric connection box is tightened and the electric junction box is vibrated, the electric wires vibrate violently. Therefore, there is an advantage that the generation of abnormal noise due to vibration and the damage of the electric wire are prevented, and the reliability and durability of the electric junction box are significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main body of an electrical junction box according to an exemplary embodiment of the present invention separated from a case.

FIG. 2 is a plan view showing a state in which the flexible gripping piece of FIG. 1 is in close contact with the inner wall of the case and grips an electric wire.

FIG. 3 is a perspective view showing a lead-out state of an electric wire of a conventional electric junction box.

[Explanation of symbols]

 A Electrical connection box 1 Main body 1a Side wall 2 Upper case 3 Lower case 3c Inner wall 5 Flexible gripping piece 5a Holding claw 8 Electric wire

Claims (2)

[Claims] 1. An electric connection box in which the main body of the electric connection box is housed in a case, wherein a curved flexible gripping piece is attached to a side wall of the main body, and when the main body and the case are assembled, An electric wire fixing structure for an electric connection box, wherein an inner wall presses the flexible gripping piece to tighten and fix an electric wire introduced inside the flexible gripping piece. 2. The electric wire fixing structure for an electric junction box according to claim 1, wherein the flexible gripping piece is a flexible gripping piece having a holding claw protruding inward.