JP2836484B2 - Steering wire harness guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness guiding device for a steering system for a vehicle having a telescopic mechanism, which guides and stores a wire harness which expands and contracts with the adjustment of the steering.

[0002]

2. Description of the Related Art A steering having a telescopic mechanism requires a wire harness wired to the steering to expand and contract (approximately 50 mm) by adjusting the position of a steering wheel. Therefore, a wire harness guide device that accommodates an intermediate portion of the wire harness and allows the wire harness to expand and contract with respect to the steering is provided. There are examples.

That is, the known example (see FIG. 4)
A harness case 4 having a harness spool portion 3 for guiding and storing an intermediate portion of the wire harness 1 guided from the steering 2 in a loop shape and a curved shape is a main part. The loop shape of the wire harness 1 stored in the harness case 4 Basically, the wire harness 1 pushed into the harness opening 7 is guided and stored in the harness spool portion 3 by the change of the harness opening 7 or freely pulled out from the harness opening 7 so that the wiring harness 1 can be extended and contracted with respect to the steering 2. It has a structure. Note that 5 in FIG.
Is a cover of the harness case 4.

[0004]

In the conventional wire harness guide device described above, the surplus portion of the wire harness 1 due to the adjustment of the steering 2 is pushed in from the harness opening 7 and stored, so that the wire harness 1 itself has its pushing force. Needs to be transmitted to the portion stored in the harness spool portion 3. However, since the wire harness 1 is formed of a thin lead wire and is rich in flexibility, the wire harness 1 lacks rigidity against a pushing force in the longitudinal direction. As shown in FIG. Then, a loop-shaped swelling deformation portion 15 is formed outside the harness port 7, and the swelling deformation portion 1
There is a problem that the steering wheel 5 contacts another device of the steering wheel 2 to hinder the operation of the device or to generate abnormal noise during traveling.

[0005] The present invention provides a wire harness guide device which solves the above-mentioned disadvantages of the prior art.

[0006]

According to a wire harness guide device of the present invention which solves the above technical problem, a wire harness disposed in a steering having a telescopic mechanism is inserted into a harness opening through a loop-shaped wire harness. In a steering wire harness guide device having a harness spool portion that is housed in a curved shape and makes a wire harness extendable from the harness opening, a rigid column body is provided in an intermediate portion of the wire harness in a longitudinal direction of the wire harness. In the maximum extension state in which the wire harness is pulled out from the harness port, a rear end is present in the wire harness port, and a portion protruding from the harness port is provided. And a structure having a protruding length equal to or longer than the maximum expansion / contraction stroke of the wire harness. "

[0007] The rigid column is made of a resin, metal, bar, cylinder, or plate, and is arbitrarily adopted and fixed to the wire harness. In some cases, the rigid wire portion and the steering wheel are connected by another rigid connecting member, and the rigid wire portion and the steering wheel have an interlocking structure.

[0008]

According to the steering wire harness guide device of the present invention having the above-mentioned structure, the steering is adjusted so that a portion which is pushed into the harness spool from the harness opening by the adjustment of the steering wheel is provided with
Since the rigid wire portion exists, the rigidity of the pushed-in portion of the wire harness which receives the pushing force for entering the harness opening is improved, and the buckling resistance is improved. Therefore, there is no possibility that a loop-shaped deformed portion of the buckling deformation due to the pushing force is generated at the entrance portion of the harness opening, and the wire harness passes through the harness opening in a straight shape, and an excess wire harness due to steering adjustment is removed. The guide can be smoothly stored in the harness spool.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given based on embodiments. First, referring to FIG. 1 showing a first embodiment of the present invention, an intermediate portion of a wire harness 1 arranged and extended on a steering 2 having a telescopic mechanism is connected to a harness case 4.
A wire for storing the wire harness 1 with respect to the steering 2 by changing the loop shape 8 by pulling out and inserting the harness from the harness opening 7 into the harness spool portion 3 of the main part and pulling it out from the harness opening 7. In the harness guiding device 6, the rigid wire portion 1
0 is provided.

That is, the rigid wire portion 10 has a holding groove 11 for holding the wire harness 1 on the outer periphery thereof, which is recessed in the longitudinal direction.
In addition, a rigid column member 9 made of resin having a required rigidity is fixed along a predetermined position of the wire harness 1 by a caulking piece 12, and the rigid wire portion 10 forms a rigid elongated column. .

The rigid wire portion 10 (see (C) and (D) of FIG. 1) has a structure in which the wire harness 1 is drawn to the steering 2 side to the maximum and the loop shape 8 becomes the minimum shape. In the maximum extension state, the rear end 1
4 is present in the harness opening 7 and has a shape in which the protruding length L2 from the harness opening 7 is larger than the maximum expansion / contraction stroke L1 of the wire harness 1 and a position along the wire harness 1.

In the above-described embodiment of FIG. 1, the rigid wire portion 10 has the above-described structure, and when the wire harness 1 is maximally extended, the maximum expansion stroke L of the wire harness 1 is reduced.
Since the wire harness 1 is pushed into the wire harness guide device 6 by adjusting the steering 2 from its maximum extended state, the rigid wire portion 10 protruding from the harness opening 7 has rigidity because the wire has a protruding length L2 larger than 1. It functions as a slender column and transmits the pushing force transmitted to the wire harness 1 to the wire harness 1 in the harness spool portion 3. Therefore, the wire harness 1 is smoothly pushed into the harness spool portion 3 in a straight shape without causing harmful loop-shaped bulging deformation at the entrance portion of the harness port 7 without causing harmful loop-shaped bulging deformation. It is possible to prevent the occurrence of the conventional running abnormality and the disturbance of peripheral devices due to the presence of the deformation.

Next, another embodiment and another embodiment of the present invention will be described with reference to FIGS. That is, the rigid column 9 used for the rigid wire portion 10 may be a cylindrical or solid rod as shown in FIG. 2 or a plate as shown in FIG.
Each of them may be fixed along the wire harness 1 by an arbitrary means such as a tape winding 15. Further, the rigid wire portion 10 may connect the steering 2 and the rigid column 9 with a rigid connecting member 13 to form an interlocking structure with the steering 2. The thing of the interlocking structure of this FIG.
Since the adjustment movement of the steering 2 and the expansion and contraction of the wire harness 1 are completely interlocked, the pushing and pulling action of the wire harness 1 into the wire harness guide device 6 is further stabilized. Incidentally, reference numeral 16 in the drawing denotes a connecting locking portion.

[0014]

As described above, according to the steering wire harness guide device of the present invention, the expansion / contraction guide storage of the wire harness accompanying the adjustment movement of the steering becomes smooth, and the bulging deformation in the middle of the wire harness is prevented. This has the effect of stabilizing the performance of the steering with the telescopic mechanism and preventing abnormal noise during running.

[Brief description of the drawings]

FIG. 1 shows a steering wire harness guide device according to a first embodiment of the present invention, in which (A) is a perspective view showing the configuration, (B) is an enlarged perspective view of a rigid column body, (C) and (D) in the figure are plan views in the operating state.

FIG. 2 is a perspective view of a rigid column of a wire harness guide device according to another embodiment of the present invention.

FIG. 3 is a partial perspective view of a wire harness guide device according to another embodiment of the present invention.

4A and 4B show a conventional steering wire harness guide device, in which FIG. 4A is a perspective view showing a configuration thereof, and FIGS. Cross section

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire harness 2 Steering 3 Harness spool part 4 Harness case 6 Wire harness guide device 7 Harness opening 8 Loop shape 9 Rigid pillar 10 Rigid wire part 11 Embedding part 12 Caulking piece 13 Connecting member 14 Rear end of rigid wire part 15 Tape Winding 16 locking part

Claims (2)

(57) [Claims] An intermediate portion of a wire harness disposed on a steering having a telescopic mechanism is inserted into a harness opening to be housed in a loop shape or a curved shape, and a harness spool portion that allows the wire harness to extend and contract from the harness opening is provided. In a steering wire harness guide device having a rigid wire portion provided with a rigid column along a longitudinal direction of the wire harness at an intermediate portion of the wire harness, the rigid wire portion is connected to the wire harness through the harness opening. The steering wire has a structure in which a rear end is present in the harness opening in a maximum extended state where the wiring harness is pulled out, and a protruding portion from the harness opening has a protruding length equal to or longer than a maximum expansion / contraction stroke of the wire harness. Harness guide device. 2. The steering wire harness guide device according to claim 1, wherein the rigid wire portion and the steering are connected by a rigid connecting member, and the steering and the rigid wire portion are linked.