JPH10181473A - Wire harness arrangement structure in door hinge part of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a wire harness, being off from a hinge and a weather strip toward the passenger compartment. SOLUTION: In an accommodation casing having a space in which a wire harness is wound and accommodated, an insertion port and a draw-out port 10g opposed to each other, a harness fixing piece projected from the outer surface of the insertion port, the wire harness is inserted into the casing through the insertion port and is wound on a spring piece 30, and thereafter, it is led out through the draw-out port 10g. The casing is secured to one of the door and the vehicle body, and the wire harness led out from the draw-out port is led to the other one of the door or the vehicle body, and is locked thereto by means of a clamp. With this arrangement, the winding diameter of the wire harness set in the casing varies in response to opening and closing operation of the door so as to extend and retract the wire harness following the operation of the door.

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 in a door hinge portion of an automobile, and more particularly to a wiring harness arranging a wiring harness inside a weather strip on a room side from a hinge fulcrum. This facilitates simplification and simplification of waterproofing measures.

[0002]

2. Description of the Related Art In a door hinge portion which connects a vehicle body side and a door side of an automobile so as to be freely opened and closed, a door harness is routed from the door side to the vehicle body side, 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 hinge fulcrum position and changed in the vertical direction, and only twisting occurs in the wire harness with opening and closing of the door. Thus, the wire harness does not need to expand and contract, and the twist is absorbed by twisting the wire harness.

As described above, when the wire harness is routed at the hinge fulcrum position, as shown in FIG.
And the hinge H of the door D is attached substantially at the center of the end face 1a of the door panel 1, so that the door harness W / H passes through the inside of the door panel 1 and the through hole 1b formed in the end face 1a.
Must be taken out of the door through the door panel 1
There is a problem that it takes time and effort to route the wire harness into the inside and to pass through the through hole 1b.

[0004] A weather strip 2 is attached to the door D for waterproofing. Since the weather strip 2 is attached to the indoor side of the hinge H, the wire harness W / H is also attached to the weather strip. 2
It is more outdoor. Therefore, the location where the wire harness W / H is routed cannot be waterproofed by the weather strip 2, so that a waterproof structure is required. 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 waterproof measure for the wire harness W / H, which increases the cost and increases the trouble. Was.

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

[0006] Japanese Unexamined Patent Publication No. 8-48 discloses a structure in which a wire harness is routed on the indoor side of the weather strip.
No. 146. That is, as shown in FIGS. 12 and 13, a bellows-shaped duct 4 for covering the air-conditioning duct is attached between the side cover 3 of the instrument panel and the door inner surface 1c opposed thereto.
The wire harness W / H is spirally wound inside and is provided with a margin.

[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. When the wire harness W / H passes 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, when a part W of the wire harness W / H enters the concave portion of the bellows portion of the duct 4, the duct 4 cannot be contracted. If the door is closed in this state, the duct 4 and the wire harness W / H may be damaged by the door panel and the side cover, and the electric wires may be disconnected.

When the bellows-like wire harness W / H expands and contracts, it does not always restore to a constant shape. When the outer diameter of the wire harness becomes larger than the inner 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 external force. In this case, the bellows-like wire harness W / H inside enters the recess of the duct 4, and the above-mentioned problem is solved. Likely to happen.

When the door is opened and closed, in addition to the force for opening and closing the door, an operating force for expanding and contracting the bellows-shaped duct 4 is required, 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 and arranges a wire harness having both a twist absorbing function and a telescopic function at a position indoors from the hinge fulcrum and inside the weather strip. It is an object of the present invention to facilitate work and simplify waterproofing measures.

[0012]

In order to solve the above-mentioned problems, according to the present invention, a wire harness to be routed between a vehicle body and a door is attached to a vehicle door hinge for connecting the vehicle body and the door. In the wiring routed indoors from the position and the weather strip, a housing having a hollow portion in which a wire harness is wound and housed, an insertion opening and an outlet of a harness opposed to each other, and a harness fixing piece protruding from an outer surface of the decayed and pulled out harness. A case is provided, a protrusion for a stopper projecting into the space is provided inside the housing case, and one end of a spring piece having an arc shape is fixed to the protrusion. After energizing the wire so that it extends along the harness insertion space, the wire harness is inserted from the insertion port and wound once along the outer peripheral surface of the spring piece in the space. Pull out from the outlet is inserted,
The housing case is fixed to either the door side or the vehicle body side, and the wire harness pulled out from the housing case is routed to the door side or the vehicle body side and locked with a clamp, and the door is opened. In response to the operation, the wire harness inside the storage case is pulled out against the spring piece, and at the time of the door closing operation, the wire harness is pulled back into the storage case by the urging force of the spring piece to respond to the door opening / closing operation. There is provided a wiring harness wiring structure in a door hinge portion of an automobile, wherein the wiring harness is configured to be able to follow by expanding and contracting the wiring harness.

The spring piece has a thin circular arc-shaped tip so that no load is applied to the wire harness, and the speed at which the wire harness is returned to the housing case by the spring piece is set faster than the closing speed of the door. Claim 2).

The housing case is a so-called harness spool, and is composed of a main body and a lid integrally formed of resin. The lid is connected to the main body via a thin hinge. The insertion opening and the outlet are cut out on opposing side surfaces of the main body, and the wire harness is passed through the insertion opening, rotated once, pulled out from the outlet and stored, the lid is closed, and the main body is closed. It is locked by a lock portion and a locked portion provided at a location corresponding to the portion and the lid portion.

When the housing case passing through the wire harness is fixed to the door side, the wire harness wound in the housing case is pulled out and extended in accordance with the opening operation of the door. At this time, the wire harness urged in the radially expanding direction by the spring piece is pulled out while reducing the diameter against the urging force of the spring piece. Since the wire harness drawn out of the storage case can be freely twisted, it extends while being twisted. Therefore, it is possible to follow the opening operation of the door. On the other hand, when the door is closed, the wire harness is pushed by the door and is fixed at the insertion port side of the storage case, so that the wire harness is returned inside the storage case by an extended amount. At this time, since the spring piece exerts the original restoring force, the wire harness is quickly pulled back into the housing case and housed in a state of being wound with the original large diameter. Because the retracting speed of this wire harness is set faster than the closing speed of the door,
The wire harness does not bite between the door and the vehicle body.

Further, since the wire harness is wound via the spring piece attached to the stopper projection, even when the door is opened at the maximum angle and the extension of the wire harness is maximized, the wire harness remains in the housing case. Since it is wrapped around the inner protrusion and does not become linear, it is smoothly rewound into the storage case.

The fixing position of the storage case on the door side is as follows:
A recess formed in the inner surface of the door inner plate or the interior trim, and the portion fixed to the vehicle body side is a pillar on the door side end surface of the instrument panel or the lower side surface of the instrument panel. The location where the storage case is attached is not limited to the above location, and the door side may be attached to the end face on the vehicle body side of the door, or the vehicle body side may be attached to the end face on the door side.

For example, if the housing case is attached to the inner surface of the door inner plate, it is not necessary to route the wire harness inside the door, and the routing operation can be simplified. Further, when the housing case is mounted on the instrument panel, the mounting of the housing case becomes easier as compared with the case where the housing case is mounted.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 8 show a first embodiment, in which a door harness D · W / H is extended from a front end surface 1a of a door panel 1 to a vehicle body side, and is routed to a door hinge between the door D and the vehicle body C. ing. The above door harness D
・ The front side of the door hinge part of the W / H is the door D
After passing through the housing case 10 having the shape shown in FIGS. 2 to 4 and fixed to the vehicle body C, the opening is formed in the side of the instrument panel 20 on the door side on the vehicle body C side.
As shown in FIG. 8, the clamp 21 is engaged with the inner surface of the instrument panel 20 by the clamp 21.

The housing case 10 is a so-called harness spool, and is formed by integrally molding a main body 10a and a lid 10b with a resin. The main body 10a and the lid 10b are connected by a thin hinge 10c. When the lid 10b is closed, the wire harness D · W / H can slide in the hollow portion 10
d is a substantially semicircular thin box.

The main body 10a of the housing case 10 is opposed to both ends of the curved side surface 10e, and has an insertion opening 10 for a harness.
f and the outlet 10g are cut out, and a harness fixing piece 10h protrudes from the outer peripheral edge of the insertion opening 10f. Further, a columnar projection 1 protruding from the bottom 10j.
0k is provided. Further, while a lock piece having a lock hole 10m provided at the tip of the lid 10b is protruded, the lid 10b
The locking claw 1 is attached to the side of the main body 10a corresponding to
0n is protruded.

An arc-shaped spring piece 30 having a central end inserted and locked in a locking groove 10k-1 formed in the projection 10k is mounted in the housing case 10, and the spring piece 30 is attached to the projection 10k.
k in the form of an arc, and its outer peripheral portion 30a
Are urged so as to expand so as to extend along the inner peripheral surface of the side surface 10e and the harness insertion space 10p. In addition, as will be described later, when the door harness D · W / H is pulled out and pulled back into the case, the diameter is set to be larger than the closing speed of the door and return to the original position. The thickness of the spring piece 30 is reduced at its arc-shaped tip portion 30a.

The door harness D / W / H is inserted through the insertion opening 10f, and is fixed to the harness fixing piece 10h with the tape 12 at the entrance of the insertion opening 10f. Storage case 10
Inside, as shown in FIG. 6, the spring piece 30 attached to the projection 10k is wound in a single winding so as to surround it, and then pulled out from the outlet 10g. At this time, since the spring piece 30 has a harness insertion space 10p between the spring piece 30 and the side surface 10e whose outer peripheral portion is curved as described above, the spring piece 30 has a large diameter through the space 10p and along the inner surface of the side surface 10e. Rolled up. After the door harness D / W / H is passed through the housing case 10 with an extra length, the cover 10b is closed and the lock hole 1 is closed.
The locking claw 10n is locked at 0m and locked.

As shown in FIG. 1, a weather strip 2 is attached to the door panel 1 of the door D to which the housing case 10 is attached, from the hinge joint H to the vehicle body C, on the indoor side. A notch 1g for harness insertion is formed in a corner portion extending from the door panel end surface 1a on the indoor side to the inner plate 1h further from the position, and is communicated with the notch 1g to closely fit the housing case 10 into the door inner plate 1h. Is formed.

As shown in FIG. 6, the door harness D · W / H passing through the front portion of the housing case 10 is routed along the inner surface of the inner plate 1h of the door panel 1, and the housing case 10 is placed in the recess 1k. In this state, the housing 10 is fixed inside the door by covering the inner plate 1h with a trim (not shown).

The door harness D · W / H drawn from the outlet 10g of the storage case 10 extends to the vehicle body C, and as described above, the side surface 20 of the instrument panel 20.
Through the opening 20 a of FIG. a, the clamp 21 is engaged with the inner surface of the instrument panel 20 by the clamp 21. The mounting state shown in FIG. 6 is a state in which the door D is in a closed state. At this time, the length of the door harness D · W / H from the storage case 10 mounted on the door side to the position locked on the vehicle body side As L1
The length wound in the storage case 10 is set as the extra length.

As described above, the concave portion 1k formed on the indoor side relative to the fulcrum position of the hinge H and the weather strip 2
The accommodation case 10 is accommodated in the instrument panel 2
0, the door harness D · W / H is
When the door is opened, it must be extended while twisting according to the opening and closing angle of the door. Similarly, when the door is closed, it is necessary to shrink while twisting back.

When the door D is opened from the door closed state shown in FIGS. 6 and 8A, the door harness D · W / H in the storage case 10 The piece 30 is bent and pulled out from the outlet 10g while reducing the winding diameter of the door harness D · W / H. At that time,
Since the tip portion 30a of the spring piece 30 is thin, it can smoothly follow the movement of the door harness D / W / H, and does not damage the door harness D / W / H. In the fully opened state of the door, as shown in FIGS. 7 and 8B, the length of the door harness extends from the storage case 10 to the clamp 21 as L2. The difference (L2-L1) between the length L2 and the original length L1 is drawn out of the storage case 10.
In addition, in the housing case 10, the door harness D · W is attached to the spring piece 30 attached to the protrusion 10k for the drawer stopper.
/ H is wrapped around, preventing further pull-out, and pulling out the door harness D · W / H.
Between the vehicle body C and the vehicle body C.

As described above, when the door D is opened, the door harness D · W / H extends to follow the opening of the door D, and the door harness D · W / H pulled out of the housing case 10 Since the harness itself can be twisted, it can be stretched while being twisted.

When closing the door from the open state of the door D,
Since the spring piece 30 around which the door harness D · W / H is wound has a spring force that returns to its original shape, when the door D moves in the closing direction, the return force of the spring piece 30 causes the door D to return to its original shape.
6 is rewound into the storage case 10 at a speed faster than that of the closing operation, and the state shown in FIG. 6 is obtained. Also at this time, since the tip portion 30a of the spring piece 30 is made thin, the door harness D / W / H can be pulled back without damaging the door harness D / W / H. in this way,
Since the door harness D · W / H shrinks smoothly, it is possible to follow the door closing operation and prevent the harness from being caught between the door and the vehicle body.

FIGS. 9, 10A and 10B show a second embodiment, in which the housing case 10 is fixed to the inner side of the door side surface 20a of the instrument panel 20 on the vehicle body C side. That is, the housing case 10 is fixed inside the instrument panel 20 and passes through the door harness D · W / H arranged from the door side into the housing case 10. on the other hand,
On the door D side, the door harness D · W /
H is fixed by a clamp 21 '. Note that the instrument panel harness may be inserted into the housing case 10, the instrument panel harness may be routed to the door side, locked to the door side by a clamp, and then connected to the door harness with a connector.

The operation of the second embodiment is the same as that of the first embodiment. When the door is opened from the door closed state shown in FIG. 10A, the door harness is twisted as shown in FIG. Extends to follow the opening of the door. on the other hand,
When the door is closed from the door open state of (B), the spring piece 30 around which the door harness D / W / H is wound is returned to the state of (A), and at the same time, is pushed by the door closing operation and is placed in the housing case 10. It is rewound while expanding the winding diameter, and the door harness D / W / H shrinks.

The present invention is not limited to the above embodiment. If a step is provided between the insertion opening and the outlet of the storage case and the bottom surface of the storage case is inclined, the harnesses inside the storage case are directly crossed with each other. It can be wound without entanglement because it does not come into contact.

[0034]

As is apparent from the above description, the wiring harness to be routed between the door and the vehicle body of the automobile according to the present invention is not located at the same position as the hinge position but at the interior position on the indoor side. Therefore, when opening and closing the door, the wire harness is required to have both the function of expanding and contracting and the function of twisting, but since the housing case with the harness expanding and contracting mechanism is provided,
The wire harness can be expanded and contracted when opening and closing the door,
In addition, since the wire harness drawn out of the housing case can be twisted, it is possible to smoothly follow the opening and closing operation of the door.

Further, since the wire harness in the housing case is urged by the spring piece in the direction of being drawn into the housing case, the wire harness can be drawn into the housing case faster than the closing speed of the door when the door is closed. The wire harness is not bitten between the vehicle body.

Further, since the above-mentioned housing case has a small shape that can be inserted while being wound with a wire harness, it can be mounted without taking up space, and is not exposed much to the indoor side, so that the appearance is not impaired. . Further, even when the storage case is provided on the door side, since the size is small and lightweight, the opening / closing operation force of the door does not increase and the opening / closing of the door does not become heavy.

Further, since the wire harness is routed inside the hinge position and inside the weather strip, it is not necessary to take a waterproofing measure for the wire harness. Can be eliminated.

Further, since the wire harness can be routed on the inner surface side of the inner panel of the door panel, the wiring harness is routed to the inside of the door panel, which is conventionally required, and the wire harness is taken out from the through hole formed in the front surface of the door panel. Can be eliminated, and the work of arranging the wire harness on the door panel can be made much easier than in the past.

[Brief description of the drawings]

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

FIG. 2 shows a storage case used in the first embodiment,
(A) is a plan view, (B) is a front view, and (C) is a side view.

FIG. 3 is a perspective view showing a state where the storage case is closed.

FIG. 4 is a perspective view showing a state where the storage case is opened.

FIG. 5A is an exploded perspective view of a main part in the accommodation case, and FIG. 5B is a view showing a connected state of FIG.

FIG. 6 is a perspective view showing a state where a wire harness is inserted into a storage case when the door is closed.

FIG. 7 is a perspective view showing a state where the wire harness is pulled out when the door is opened.

FIGS. 8A and 8B are schematic plan views showing a positional relationship between a housing case and a wire harness during door opening / closing operation.

FIG. 9 is a perspective view of a second embodiment.

FIGS. 10A and 10B are schematic plan views showing the positional relationship between a housing case and a wire harness during a door opening / closing operation according to a second embodiment.

FIG. 11 is an exploded perspective view of a door hinge part showing a conventional example.

FIG. 12 is a perspective view of another conventional example.

FIG. 13 is an enlarged sectional view of a main part of the conventional example of FIG.

[Explanation of symbols]

 C Body D Door D / W / H Door harness H Hinge position 1 Door panel 1a End face 1k Depression 2 Weather strip 10 Housing case 10a Main body 10b Lid 10f Insertion opening 10g Pullout 10h Harness fixing piece 10k Projection 20 Instrument panel 30 Arc Shaped spring piece

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02G 3/28 B60J 5/04 L Z

Claims (2)

[Claims] 1. A wiring harness to be routed between a vehicle body and a door, wherein the wiring harness is routed to a vehicle interior side from a mounting position of a door hinge of a vehicle connecting the vehicle body and the door and a weather strip, and the wire harness is wound and accommodated. Provide a housing case having a hollow portion to be inserted, a harness insertion port and a draw-out port facing each other, and a harness fixing piece protruding from the decayed outer surface, and a protrusion for a stopper projecting into the space is provided inside the housing case. ,
One end of an arc-shaped spring piece is fixed to the projection, and the outer peripheral portion of the spring piece is urged so as to expand so as to extend along the inner peripheral surface of the housing case and the harness insertion space, and The wire harness is inserted from the insertion port, wound once along the outer peripheral surface of the spring piece in the space, pulled out from the outlet, and inserted, and the storage case is inserted into either the door side or the vehicle body side. The wiring harness pulled out from the housing case is routed to either the door side or the vehicle body side and locked with a clamp, and the wire harness inside the housing case is moved in accordance with the door opening operation by the spring. At the same time, the wire harness is pulled back into the housing case by the urging force of the spring piece when the door is closed, and the wire harness is expanded and contracted according to the door opening / closing operation to follow the door. A wiring harness routing structure in a door hinge portion of an automobile, wherein the wiring harness routing structure has a structure that can be cut. 2. The spring piece has a thin arc-shaped tip so that a load is not applied to a wire harness.
The speed at which the wire harness is pulled back to the housing case by the spring piece is set faster than the closing speed of the door.
The wiring harness wiring structure in the door hinge part of the automobile according to the above.