JPH1044773A - Wire harness distribution structure in door hinge part of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To distribute wire harness so as to be expanded/contracted without being twisted by fitting a roller to the other ends of compression spring members with one ends thereof fixed to the door inner surface, extending the wire harness, fixed to a door, in an opposite direction to the hinge part side to wind the wire harness around a roller, and then distributing the wire harness on the body side. SOLUTION: A connector 11 connected to one end of door harness D.W/H distributed at the inner surface of a door inner plate 10 is fixed to a support frame 12 provided protrusively from the inner surface of the door inner plate 10. The door harness D.W/H is extended in an opposite direction to the hinge part side from a door side fixed position N by the connector 11, and wound around a harness winding rotary roller 15 provided at the tips of a pair of compression spring members 14 with one ends thereof fixed to the door inner plate 10, then wound around a guide rotary roller 16 fitted to the door inner plate 10 and further wound around a fixed roller 17 provided on the body C side. An expansion function is thereby imparted by the compression spring members 14, and the wire harness itself has torsion absorbing function so as to be able to smoothly follow door opening/closing action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring harness arranging structure for a door hinge of an automobile, and more particularly, to arranging a wiring harness inside a weather strip on the indoor side from a hinge fulcrum. This facilitates simplification and simplification of waterproofing measures.

[0002]

2. Description of the Related Art A door hinge is connected to a vehicle body side from the door side to open / close a vehicle body side and a door side of an automobile, and an instrument panel harness (hereinafter referred to as an instrument panel) is provided on the vehicle body side. Harness), or the instrument panel harness is routed from the vehicle body side to the door side, and is connected to the door harness on the door side. Conventionally, the wire harness routed to this door hinge portion is routed at a position substantially the same as the position of the door hinge portion and at a position changed in the vertical direction, and only twisting occurs in the wire harness with opening and closing of the door. The wire harness does not have to expand and contract, and the twist is absorbed by the wire harness being twisted.

When the wire harness is routed at the hinge fulcrum position as described above, as shown in FIGS.
The hinge H between the vehicle body side C and the door D is connected to the end face 1 of the door panel 1.
a, the door harness D / W
/ H must pass through the inside of the door panel 1 and be taken out of the door from the through hole 1b provided in the end face 1a.
There was a problem that it took time and effort to pass through b.

A weather strip 2 is attached to the door D for waterproofing. Door hinge H
Is mounted on the outdoor side of the weather strip 2, the wire harness W / H is also on the outdoor side of the weather strip 2. Therefore, the wire harness W /
Since H is not waterproofed by the weather strip 2, it is necessary to have a waterproof structure. Therefore, conventionally, it is necessary to attach the waterproof grommet G to the penetrating position on the door side and the vehicle body side, and also to provide a waterproofing measure for the wire harness W / H, resulting in a problem that the cost is increased and the number of steps is increased.

[0005] The above problem can be solved by disposing the wire harness W / H closer to the indoor side than the weather strip 2, but in this case, the fulcrum position of the door hinge H and the wiring position of the wire harness W / H. Therefore, it is necessary to expand and contract the wire harness as the door is opened and closed.
That is, the wire harness routed to the door hinge part is required to have both the function of expanding and contracting and the function of absorbing torsion.

A structure in which a wire harness is arranged on the indoor side of the weather strip 2 is disclosed in Japanese Patent Application Laid-Open No. H8-4.
No. 8146. That is, as shown in FIGS. 8 and 9, a bellows-shaped duct 4 for covering an air conditioning duct is attached between a side cover 3 of an instrument panel and a door inner surface 1 c opposed thereto, and a wire is provided inside the duct 4. The harness W / H is spirally wound and arranged with a sufficient length.

[0007]

However, in the above structure, since the bellows-like wire harness W / H is routed inside the bellows-like duct 4, the following problems occur.

FIG. 10A shows a wiring harness W / H.
As shown in (B), when passing through the center position inside the bellows-like duct, both the bellows-like duct 4 and the bellows-like wire harness W / H can expand and contract in a normal state. However, as shown in FIG.
When a portion W of / H enters the concave portion 4a of the bellows portion of the duct 4, the duct 4 cannot be contracted. In this state, FIG.
When the door D is closed as shown in (B), an excessive force may be applied to the duct 4 and the wire harness W / H between the door panel 1 and the side cover 3.

When the bellows-like wire harness W / H expands and contracts, it does not always restore to a constant shape. If the outside diameter of the wire harness becomes larger than the inside diameter of the bellows-like duct 4, the bellows-like duct becomes It is destroyed and cannot shrink.

Since the bellows-shaped duct 4 is exposed to the indoor side, there is a possibility that the bellows-shaped duct 4 is deformed by an external force.
And the above problem is likely to occur.

When the door is opened and closed, an operation force for expanding and contracting the bellows-shaped duct 4 is required in addition to the force for opening and closing the door, which causes a problem that the occupant feels that the opening and closing of the door is heavy.

The present invention solves the above-mentioned problems, and arranges a wiring harness so as to expand and contract without twisting at a position indoors from a fulcrum position of a door hinge and inside a weather strip, thereby facilitating a wiring operation. Another object of the present invention is to simplify waterproofing measures.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a wire harness routed between a vehicle body and a door is attached to a hinge for connecting the vehicle body and the door. A wire for wiring a harness is attached to the other end of the compression spring material, one end of which is fixed to the inner surface of the door.
The wire harness fixed to the door at the hinge portion side from the installation position of the roller is extended in the opposite direction to the hinge portion side, wound around the roller, and then routed to the vehicle body side, and the door opening operation is performed. Thus, the compression spring material is pulled back, the compression spring material returns to a compressed state by the closing operation of the door, and the wire harness wound around the roller can follow the door opening / closing operation. It offers a workaround structure.

In the above arrangement, since the wire harness is pulled by opening the door, the compression spring material wound around the roller by the wire harness is pulled and expanded, and the wire harness is pulled out to the vehicle body side. The restoring force is accumulated in the spring material, and when the door is moved from the open state to the closing direction, the wire harness is pulled back into the door by the extended length while maintaining the tensioned state by the restoring force of the compression spring material via the roller. It is. As described above, the wire harness expands and contracts following the opening and closing operation of the door, and the wire harness itself can be easily twisted. Therefore, the wire harness expands while being twisted at the time of opening and closing the door, and shrinks while returning the twist.

A pair of the above-mentioned compression spring members is arranged in parallel, a support frame supporting a rotary roller is erected between the distal ends of the above-mentioned compression spring members, and a wire harness is wound around the above-mentioned rotation roller to constitute a routing structure. (Claim 2). Since the roller is supported by a pair of spring materials, the expansion and contraction operation can be performed more stably, and the restoring force applied to the roller when the door is closed can be increased, so that the wire harness can quickly follow the closing of the door. Can be.

A connector is connected to the door fixed side of the wire harness, the connector is fixed to a support frame projecting from the inner surface of the door with a clip or the like, and the wire harness to be routed to the door is connected to the connector. Is preferable (claim 3). When the connector is connected to the harness arranged inside the door in this way, a wire harness for a hinge portion that is expanded and contracted by a spring can be easily connected.

Furthermore, it is preferable that a roller for guiding the wire harness is attached to the door and the vehicle body side of the route of the wire harness which is routed to the door hinge portion after being wound around the roller. As described above, when the wire harness is supported by the guide roller, a smoother expansion / contraction operation can be performed.

As the compression spring material used in the present invention, a coil spring is preferable. As the wire harness, a flexible printed circuit (FPC), a flexible wiring circuit (FWC), or the like is preferably used, but an ordinary wire harness in which a wire bundle is wound with a tape can also be used.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 to FIG. 5 show a first embodiment, in which an FP for connecting to a vehicle body is arranged along the inner surface of a door inner plate 10.
C, a door harness D · W / H is provided, a connector 11 is connected to one end of the door harness D · W / H, and the connector 11 protrudes from the inner surface of the door inner plate 10.
Is fixed with a clip 13. The connector 11 is connected to a door harness (not shown) that is connected to electrical components in the door.

Door side fixed position N by the connector 11
, The door harness D · W / H was extended rearward on the opposite side to the door hinge side, and one end was wound around a harness winding rotary roller 15 at the tip of a pair of compression spring members 14 fixed to the door inner plate 10. Then, the guide rotating roller 16 is extended forward to the door hinge side and attached to the door inner plate 10.
After being wound around the vehicle body C, it is pulled out to the vehicle body C side, and the opening 21 of the door side surface 20a of the instrument panel 20 is
Is wound around the fixed roller 17 provided in the above.

The support frame 12 is provided with a column-shaped fixing portion 12b having a flat front surface cut between the L-shaped mounting portions 12a on both sides protruding from the door inner plate 10, and the connector 11 is mounted on the fixing portion 12b. It is fixed with a clip 13. Door harness D / FPC made of FPC with the tip connected to connector 11
W / H is wound around the front half of the fixed portion 12b,
It extends toward the rear compression spring material 14 side.

One end of the pair of compression spring members 14 is fixed to both sides of a horizontal shaft portion 18a of a T-shaped base 18 fixed to the door inner plate 10, and is disposed in parallel along both sides of a vertical axis 18b. . The other end of the compression spring member 14 is connected by a connecting member 19, and the connecting member 19 is rotatably fitted with the rotation roller 15 for winding the harness.

After the door harness fixed to the support frame 12 and extended rearward is wound around the rotating roller 15,
It extends to the front and is routed to the vehicle body side through the door hinge part, and the guide rotation roller 16 is provided along the path on the door inner plate 1.
It protrudes from 0. Further, a fixed roller 17 is provided so as to protrude from an opening edge so as to protrude from an opening 21 on a side surface of the instrument panel 20 on the vehicle body side. Door harness D
As described above, the W / H is wound around the rotating roller 15 and then arranged so as to be in contact with the guiding rotating roller 16, and the fixed roller 17 is fixed on the instrument panel side.
After that, it is routed inside the instrument panel 20. After the door harness is routed on the door inner plate 10 in this way, as shown in FIG. 3, the interior of the vehicle is covered with the trim 1C so as to be invisible from the interior.

The guide-side rotating roller 20 on the door side is mounted on the fulcrum of the door hinge H and on the inner surface of the door on the indoor side of the weather strip 2. The fixed roller 21 on the vehicle body side is also provided on the indoor side with respect to the door hinge H. Therefore, since the door harness D · W / H routed to the door hinge portion is located closer to the indoor side than the door hinge H, the door harness D · W / H has an opening / closing angle of the door when the door is opened on the route. It needs to stretch accordingly and shrink when the door is closed.

With the door closed, FIG.
As shown in FIG. 5A and FIG.
Is a contracted state where no tensile force is applied, and the door harness D / W / H is pulled behind the door. FIG.
As shown in FIG. 2 (B), the door harness is pulled forward with the opening operation of the door, and as shown in FIG. 2 (B), against the spring force of the compression spring 14, 14
, The rotary roller 15 is pulled forward, and the door harness D · W / H is pulled out. At this time, the door harness is regulated by the guide rollers 20 so as to extend along the inner surface of the door inner plate 10.

When the door is operated in the closing direction from the open state,
The compression spring material 14 is rotated by the rotating roller 1 due to the accumulated restoring force.
5 is pulled back, and the door harness D · W / H wound around the rotary roller 15 is drawn back to the door. The compression spring member 14 contracts by the amount of extension, thereby absorbing the extra length of the door harness DW / H, and returns to the original contracted state. Also, due to the restoring force of the compression spring member 14, the wire harness is pulled back into the door while maintaining the tension without sagging.

It should be noted that the present invention is not limited to the above embodiment, and it is not always necessary to provide a pair of compression spring members 14,
It may be one. Further, the door fixing side may be fixed to the fixing piece projecting from the door inner plate by tape winding without fixing with the connector.

[0029]

According to the wiring harness wiring structure in the door hinge portion of the automobile according to the present invention, since the wiring harness is routed on the indoor side of the door hinge portion, the wire harness has a telescopic function and a torsion absorbing function when the door is opened. Function is required, but with the expansion and contraction function provided by the compression spring material, and
Since the wire harness itself has a torsion absorbing function, it can follow the opening and closing of the door.

Also, since a roller for winding the wire harness is attached to the tip of the compression spring material, the excess length of the wire harness is absorbed by the compression force of the compression spring material.
If the wire harness is stretched against the spring force when the door is opened, the restoring force of the spring material acts and the wire harness can expand and contract faster than the door closing speed by closing the door, causing slack and causing the wire harness to move with the door. It can be prevented from being caught between the vehicle body.

The mechanism for expanding and contracting the wire harness can be made thin, lightweight and compact, and can be easily mounted without opening and closing the door.

Since the wire harness is routed inside the hinge position and the weather strip, the wire harness does not need to be provided with a waterproof measure such as a grommet conventionally used. Further, since the wire harness can be routed on the inner surface of the door panel inner plate, the work of routing the wire harness to the door panel can be made more efficient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

2A and 2B show the operation of a compression spring material used in the first embodiment, wherein FIG. 2A is a perspective view when the door is closed, and FIG. 2C is a perspective view when the door is opened.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

4A is an enlarged perspective view of a connector fixing portion of the door harness of FIG. 1, and FIG. 4B is a plan view of FIG.

FIGS. 5A and 5B are plan views illustrating the operation of the wiring harness routing structure of the present invention.

FIG. 6 is an exploded perspective view of a door hinge part showing a conventional example.

FIG. 7 is a plan view showing a positional relationship between a hinge position and a weather strip.

FIG. 8 is a perspective view of another conventional example.

FIG. 9 is an enlarged sectional view of a main part of the conventional example of FIG.

10A and 10B are schematic diagrams showing a normal state of the conventional example of FIG.

11A and 11B are schematic diagrams showing an abnormal state of the conventional example of FIG.

[Explanation of symbols]

 C Body D Door D / W / H Door harness H Hinge position 1 Door panel 1c Trim 10 Door inner plate 12 Support frame 13 Clip 14 Compression spring material 15 Harness winding rotary roller 16 Guide roller 17 Fixed roller 20 Instrument panel 21 opening

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuhiro Ando 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (4)

[Claims] A wiring harness routed between a vehicle body and a door is routed indoors from a mounting position of a hinge connecting the vehicle body and the door and a weather strip, and one end of the wire harness is an inner surface of the door. At the other end of the compression spring material fixed to the above, a roller for harness winding is attached, and the wire harness fixed to the door at the hinge portion side from the installation position of the roller is extended in the direction opposite to the hinge portion side, and After being wound around the roller, it is routed to the vehicle body side, and the compression spring material is pulled by the opening operation of the door,
A wire harness routing structure in a door hinge portion of an automobile, wherein a compression spring material returns to a compressed state by a door closing operation, and a wire harness wound around the roller can follow a door opening / closing operation. 2. The compression spring member according to claim 1, wherein a pair of compression spring members are arranged in parallel, a support frame supporting a rotary roller is supported between the ends of the compression spring member, and a wire harness is wound around the rotary roller. A wiring harness wiring structure in a door hinge part of the automobile as described in the above. 3. A connector is connected to a door fixing side of the wire harness, the connector is fixed to a support frame projecting from an inner surface of the door, and a wire harness to be routed to the door is connected to the connector. The wiring harness wiring structure in the door hinge part of the automobile according to claim 1 or 2. 4. The wire harness guide roller according to claim 1, further comprising a wire harness guide roller attached to a door of a wire harness path routed to the vehicle body after being wound around the roller and a vehicle body side. Wire harness routing structure in the door hinge part of the automobile of Japan.