JPH0885401A - Fixture for wire harness - Google Patents

Abstract

PURPOSE: To prevent the damage to a wire harness and prevent a harmful effect on other electric wires by shortening its arrangement size. CONSTITUTION: This fixture for a wire harness W/H is constituted of a lever 12 rotatably fitted to a vehicle front panel 6 and an exciting means 13 exciting the lever 12 to face its free end section upward. An insertion hole 19 insertably holding the slack section 7 of the wire harness W/H arranged between an alternator and the vehicle front panel 6 is formed at the free end section of the lever 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness fixture, and more particularly to a wire harness connecting a alternator to a battery and a junction box in an engine room with a looseness.

[0002]

2. Description of the Related Art Conventionally, a wire harness (an insulating tape formed by bundling a plurality of electric wires, which is arranged in an engine room of an automobile,
Among those covered with an insulating tube or the like), those extending from the alternator 3 arranged on the front side of the engine 2 in the engine room 1 as shown in FIG.
After passing through the rear side of the vehicle, it is connected to the battery 5, the junction box 4, etc., and is routed so as to supply electric power.

When connecting the alternator 3 arranged on the front side of the engine room and the battery 5 or the junction box 4 similarly arranged on the front side of the engine room, as shown in FIG. Wiring can be shortened by wiring on the front side without detouring.

However, when the wire harness W / H is routed from the front alternator directly to the vehicle body panel as described above, when the engine of the automobile is started,
When the vehicle suddenly starts or suddenly stops, the engine 2 slightly tilts due to inertia (about 30 mm), so the alternator 3 moves in conjunction with the engine and pulls on the wire harness W / H connected to the alternator 3. There was a risk that the wire harness would be broken due to the force.

If the wire harness is loosened so that the wire is not broken even if the pulling force acts, the wire harness interferes with peripheral members in a narrow space in front of the engine and the vehicle body, and the wire harness is damaged. I was afraid. Therefore, conventionally, as shown in FIG. 5, the wire harness has to be routed by making a detour to the rear side.

[0006]

However, conventionally, as described above, since the wire harness W / H is routed by detouring to the rear side, the dimension of the wire harness W / H becomes long and the cost is reduced. Had invited up. Moreover,
There is also a problem that noise generated from the alternator 3 is likely to have a bad influence because the section running in parallel with other electric wires is long.

In view of the above problems, the present invention lays a wire harness in a path on the front side to shorten the size of the wire harness and eliminate adverse effects on other electric wires.
An object of the present invention is to provide a wire harness fixture that holds a wire harness so as not to cause disconnection even if the engine slightly moves, and to hold the wire harness so as not to interfere with peripheral members even if the engine is loosened. .

[0008]

In order to achieve the above object, in the invention according to claim 1, a wire wired in the front side of the engine room for connecting an alternator attached to the engine, a battery, a junction box and the like. A harness attachment, which is rotatably attached to a vehicle front panel and has an insertion hole through which an extra length portion of a wire harness disposed between an alternator and a vehicle front panel is slidably inserted. The lever and the urging means for urging the lever so that the free end thereof is directed in one direction intersecting a straight line connecting both ends of the extra length portion.

According to a second aspect of the invention, the lever is
It is mounted so as to be rotatable in a vertical plane, and the biasing means is biased so that the lever rotates its free end upward.

[0010]

According to the present invention, when the extra length of the wire harness is extended by the engine moving to the rear side of the vehicle due to sudden start or the like, the lever has its free end portion against the biasing force of the spring. Rotate to approach a straight line connecting both ends of the extra length portion.

If the excess length of the wire harness bends due to the engine moving toward the front of the vehicle when the vehicle suddenly stops, the free end of the lever connects the opposite ends of the excess length due to the biasing force of the spring. It rotates so as to be separated from the straight line, and limits the bending range of the extra length portion.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an engine room 1 of an automobile, in which an outside of an engine 2, an alternator 3, a junction box 4, a battery 5 and the like are arranged inside. The members 2, 3, 4, 5 are electrically connected by electric wires (not shown) arranged in the engine room 1. A plurality of electric wires are bundled, and the outer peripheral portion is covered with a bellows-shaped insulating tube or insulating tape to form a wire harness W.
/ H is configured.

The wire harness W / H arranged between the alternator 3 and the vehicle front panel 6 is a substantially U-shaped extra length portion 7. The extra length portion 7 is for a wire harness according to the present invention. It is held by a fixture 11 (hereinafter abbreviated as a fixture).

As shown in FIG. 2, the fixture 11 is composed of a lever 12 and a spring 13 which is a biasing means for biasing the lever 12 so that its free end portion is directed upward. .

The lever 12 is a mounting piece 14 extending from the vehicle front panel 6 toward the inside of the engine room 1.
Is rotatably mounted on the support shaft 15. More specifically, as shown in FIG. 2, the lever 12 has a through hole (not shown) formed at one end thereof, with a washer 16a and a spring 13 interposed from one surface side of the bolt 1 so that the bolt 1
7 is inserted, and the nut 18 is screwed on the other surface side with the washer 16b interposed, so that the nut 18 is attached to the attachment piece 14. In this case, the screw part of the bolt 17 is provided only within a predetermined range from the tip, and the nut 18
A predetermined gap is formed between the head of the bolt 17 and the nut 18 in a state where the bolt is screwed. As a result, the lever 12 becomes rotatable. Also, the lever 1
An elongated hole (insertion hole) 19 is formed at the other end of the wire harness W / which extends from the insertion hole 6 a of the vehicle front panel 6.
The extra length portion 7 of H is inserted. Further, the lever 1
In the center of 2, the locking portion 13 of the spring 13 described below
A lock receiving portion 21 for locking a is projected.

The spring 13 is formed by bending a wire material made of an elastic material so as to form an annular shape in the central portion, and the both ends thereof are substantially J-shaped.
This is a configuration in which the locking portions 13a and 13b are formed by bending the same into a letter shape. As described above, the spring 13 is attached to the lever 12 with the bolt 17 and the nut 18, and the locking portion 13a on one end side is locked to the locking receiving portion 21 of the lever 12 and the locking portion 13b on the other end side. Are respectively locked to locking receiving portions 6a provided to project from the vehicle body panel 6, and the lever 12 urges the free end of the lever 12 in the upward direction (the arrow direction in FIG. 2).

The fixture 11 assembled in this way
Then, in a normal time, that is, when the engine 2 is in the normal position, as shown in FIGS.
Since the extra length portion 7 of the wire harness W / H arranged between the vehicle front panel 6 and the vehicle front panel 6 is bent and stretchable, the extra length portion 7 is bent by the spring 13 around the support shaft 15 in the arrow A direction. It is lifted upwards by a lever 12 biased by. Since this direction acts against the own weight of the wire harness W / H, the extra length portion 7 does not unnecessarily loosen, and it is possible to more effectively prevent contact with other members.

When the engine 2 moves due to a sudden start or stop of the vehicle, the lever 12 operates as follows. That is, if the engine 2 moves rearward by suddenly starting the vehicle, as shown in FIG.
The distance between the engine 2 and the vehicle front panel 6 is increased, and the wire harness W / H is extended by the pulling force. As a result, the lever 12 rotates in the direction of the arrow B around the support shaft 15 against the urging force of the spring 13 as shown in FIG. 4D, and prevents the extension operation of the wire harness W / H. There is no such thing.

On the other hand, when the engine 2 moves forward due to a sudden stop of the vehicle or the like, the distance between the engine 2 and the vehicle front panel 6 becomes narrow, and the slack in the extra length portion 7 of the wire harness W / H becomes large. Become. At this time, the lever 12 is rotated in the direction of the arrow A about the support shaft 15 by the urging force of the spring 13, so that the slackened range of the extra length portion 7 is restricted and the lever 12 does not come into contact with other members. The damage is prevented.

As described above, since it becomes possible to dispose the wire harness W / H in the narrow space formed in the front part of the engine room 1 by means of the fitting 11, as in the conventional case, the engine room 1 It is possible to shorten the wire harness W / H by 200 to 300 mm as compared with the case of arranging it on the rear side.

In the above embodiment, the lever 12 is biased in the direction in which its free end portion is directed upward.
You may make it urge | bias downward. Also,
Although the lever 12 is rotated in the vertical plane, it may be in the horizontal plane. In short, the free end of the lever 12 is
The wire harness W / H may be provided so as to rotate in one direction intersecting a straight line connecting both ends of the extra length portion.

[0022]

As is apparent from the above description, according to the first aspect of the invention, the wire harness disposed between the alternator and the vehicle front panel is provided with the extra length portion. Even if the engine moves back and forth due to sudden start, sudden stop, etc., the extra length portion bends and stretches, so that an unreasonable load is not applied to the connecting portion of the wire harness, etc., and disconnection is effectively prevented.

Further, since the flexure / extension range of the extra length portion of the wire harness is restricted by the lever urged by the spring, the extra length portion is slackened in an unnecessary place and is damaged by coming into contact with another member. Such a problem is avoided. Therefore, the wire harness can be disposed between the engine and the vehicle front panel, and the length can be significantly shortened as compared with the conventional one, and the cost and the influence of noise generated from the alternator can be suppressed. You can

According to the second aspect of the invention, since the biasing means biases the lever so as to oppose the own weight of the extra length portion of the wire harness, the length of the extra length portion can be kept to the minimum necessary. Therefore, in addition to being economical, it is possible to further reduce the possibility of damaging by contacting other members.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an engine room provided with a wire harness fixture according to a first embodiment.

FIG. 2 is a perspective view of the wire harness fixture of FIG.

3 is a partially enlarged view of FIG.

4 (a) to (f) are diagrams showing an operating state of the wire harness fixture of FIG.

FIG. 5 is a schematic perspective view of an engine room showing a wired state of a wire harness according to a conventional example.

[Explanation of symbols]

 6 Vehicle Front Panel 7 Extra Length 11 Wire Harness Fixture 12 Lever 13 Spring (Biasing Means) 19 Insertion Hole W / H Wire Harness

Claims (2)

[Claims] 1. A wire harness fitting for wiring an alternator attached to an engine, a battery, a junction box, and the like in a front side of an engine room, the fitting being rotatably mounted on a front panel of a vehicle. A lever having an insertion hole through which an extra length portion of a wire harness disposed between an alternator and a vehicle front panel is slidably inserted, and a free end portion of the lever has both end portions of the extra length portion. A wire harness fixture, comprising: a biasing unit that biases in a direction intersecting a straight line. 2. The lever is mounted so as to be rotatable in a vertical plane, and the urging means urges the lever to rotate its free end upward. A fitting for a wire harness characterized by.