JP4878780B2 - Wire harness holding structure - Google Patents

Description

  The present invention relates to a holding structure for a wire harness arranged across a fixed structure such as a vehicle body of an automobile and a movable structure such as a slide seat and a slide door that slide and move relative to the vehicle body, and in particular, the movable structure. The present invention relates to a wire harness holding structure for absorbing a surplus length of a wire harness that occurs as a body slides.

  Among automobile parts, a slide seat and a slide door are parts having a relatively large amount of sliding movement with respect to the vehicle body. In order to mount the electrical component on the part, it is necessary to route the wire harness across the vehicle body, but there is a difficulty in the capacity of the wire harness.

  For example, since a slide sheet used in a popular one-box car in recent years has a large slide movement amount, an extra length is generated in the wire harness 6 as the slide sheet 5 slides as shown in FIG. Problems such as catching a foot on the slack of the wire harness 6 may occur.

  In view of this, a wire harness holding structure has been proposed in which a wire harness routed between a slide seat and a vehicle body is expanded and contracted according to the sliding movement of the slide seat (see, for example, Patent Document 1).

  As shown in FIG. 6, the wire harness holding structure disclosed in Patent Document 1 includes a protector 1 whose longitudinal direction is parallel to the slide movement direction of the slide sheet, and a fixed side provided at the front end of the protector 1. The connector 2 includes a slider 3 that engages with the protector 1 and is connected to the slide sheet so as to be slidable in the longitudinal direction of the protector 1.

  The wire harness 4 is folded back into a substantially U shape and housed in the protector 1, one end of which is connected to the fixed connector 2 and the other end is connected to the slider 3. As the slider 3 slides, the wire harness 4 expands and contracts in the protector 1 while moving the folded portion back and forth along the sliding movement direction. As a result, the extra length of the wire harness 4 generated as the slider 3 slides is absorbed.

JP 10-112922 A

  In the wire harness holding structure disclosed in Patent Document 1, the fixed connector 2 and the slider 3 are aligned in the sliding movement direction of the slider 3, and the wire harness 4 extending from the fixed connector 2 includes the slider 3. After being routed rearwardly, it is folded back into a substantially U shape and connected to the slider 3 from the rear. In other words, the wire harness 4 is always led out from the slider 3 toward the fixed connector 2 from the slider 3.

  Then, in order to avoid damage due to extreme bending at the folded portion of the wire harness 4, an extra length L for keeping the bent radius of the folded portion at an allowable value or more in the maximum stretched state of the wire harness 4 shown in FIG. 7. Is secured behind the slider 3.

  This may be disadvantageous for downsizing the wire harness holding structure. That is, in a thick wire harness such as a general electric wire (ground wire) that requires current capacity, the allowable bending radius tends to increase, and accordingly, the surplus length L needs to be set large. Therefore, there is a possibility that it may be disadvantageous for miniaturization of the wire harness holding structure. In addition, there is a problem in that it is inferior in versatility because it is designed exclusively for each vehicle model according to the stroke of the slide seat and the bending radius of the wire harness.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a movable structure in a wire harness holding structure that holds a wire harness that is routed across a fixed structure and a movable structure. It is an object of the present invention to provide a wire harness holding structure that is capable of absorbing the extra length of the wire harness that occurs along with the sliding movement of the wire and that is small and excellent in versatility.

  The above object is achieved by the following wire harness holding structures (1) to (7) according to the present invention.

(1) A wire harness holding structure for holding a wire harness arranged over a fixed structure and a movable structure that is slidably assembled to the fixed structure,
A movable side holding part that holds a part of the wire harness in the movable structure, and a fixed side holding part that holds the other part of the wire harness in the fixed structure,
The movable side holding portion is arranged so that the wire harness led out from the movable side holding portion toward the fixed side holding portion turns around the movable side holding portion as the movable structure slides. The wire harness is pivotally supported and bent,
The wire harness is covered with a reinforcing member except for the bent portion that is pivotally supported ,
The movable side holding portion is fixed to the movable structure, a fixed member provided with a shaft hole and a lead-out hole communicating with the shaft hole and expanding in a fan shape around the shaft hole; The reinforcing member that is externally attached to the wire harness that is sequentially inserted through the shaft hole and the outlet hole of the fixing member and led out toward the movable side holding portion,
The reinforcing member is supported by the opening of the outlet hole so as to be rotatable around the axis of the shaft hole;
The reinforcing member is a corrugated tube in which annular irregularities are alternately formed on the outer surface along the longitudinal direction,
A guide rail is formed at the opening of the lead-out hole so as to fit in the concave and convex portions of the corrugated tube and extend in an arc shape around the axis of the shaft hole so as to guide the corrugated tube slidably around the axis. <br/> A wire harness holding structure characterized by the above.
(2) The wire harness holding structure according to (1) , wherein the wire harness led out from the shaft hole of the fixing member is fixed to the fixing member.
(3) above, wherein the wire harness is further provided with a clamp for fixing the wire harness along a direction perpendicular to the sliding direction in the vicinity of the stationary side holding portion to the fixed structure ( The wire harness holding structure according to 1) or (2) .
(4) Any one of the above (1) to (3), wherein the movable side holding portion and the fixed side holding portion are spaced apart from each other in a direction perpendicular to the sliding movement direction of the movable structure. wire harness holding structure according to any.

According to the wire harness holding structure described in (1) above, the wire harness led out from the movable side holding part toward the fixed side holding part turns around the movable side holding part as the movable structure slides. By doing so, the surplus length of the wire harness generated by the sliding movement of the movable structure is absorbed. Thereby, a wire harness can be routed without slack.
Then, the wire harness turns and the lead-out direction of the wire harness from the movable side holding portion in the fully extended state of the wire harness is directed to the fixed side holding portion, so that the movable side holding portion and the fixed side holding portion are shortened with a shorter wire harness. Can be connected. Thereby, size reduction of a wire harness holding structure can be achieved.

In addition, according to the wire harness holding structure described in (1) above, the wire harness led out from the movable side holding part toward the fixed side holding part can turn around the movable side holding part.

Further , according to the wire harness holding structure described in the above (1) , the wire harness is reinforced by the reinforcing member so as not to be bent immediately after being led out from the outlet hole, and the reinforcing member is formed of the shaft hole. The opening of the lead-out hole is supported so as to be pivotable about an axis. Thereby, the wire harness led out from the lead-out hole toward the fixed side holding part can turn around the movable side holding part.

Further , according to the wire harness holding structure described in the above (1) , the corrugated tube is constituted by the corrugated tube as the reinforcing member, and the unevenness formed on the outer surface of the corrugated tube and the guide rail formed on the opening of the outlet hole. The tube can be guided in the turning direction and can be prevented from being pulled out from the opening of the outlet hole of the corrugated tube.

According to the wire harness holding structure described in (2) above , twisting occurs mainly in the wire harness housed in the shaft hole as the wire harness led out from the lead-out hole turns. Thereby, the stress which acts on a wire harness can be relieved.

According to the wire harness holding structure described in the above (3) , the wire harness is fixed in a state in which a part thereof is along a direction orthogonal to the sliding movement direction in the vicinity of the fixed side holding portion. As a result, the behavior of the wire harness is stabilized and the occurrence of slack is suppressed between the movable side holding portion and the fixed side holding portion that are spaced apart in the direction orthogonal to the sliding movement direction of the movable structure. Can do.

According to the wire harness holding structure described in the above (4) , the distance between the movable side holding portion and the fixed side holding portion in the direction orthogonal to the slide movement direction is appropriately set within the range of the extra length absorption capability by turning the wire harness. By adjusting, it can be applied to various movable structures having different slide movement amounts, and is excellent in versatility.

  ADVANTAGE OF THE INVENTION According to this invention, the wire harness holding structure holding the wire harness arranged ranging over a fixed structure and a movable structure absorbs the extra length of the wire harness which arises with the sliding movement of a movable structure. Therefore, it is possible to provide a wire harness holding structure that is small and excellent in versatility.

Preferred embodiments of the present invention will be described below with reference to the drawings.
1 is a perspective view of a vehicular slide seat to which a wire harness holding structure is applied according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of a main part of the wire harness holding structure shown in FIG. 3 is an assembly perspective view of the main part shown in FIG. 2, FIG. 4 is a diagram for explaining the operation of the wire harness holding structure shown in FIG. 1, and is a plan view seen from the bottom side of the vehicle slide seat, FIG. It is 2nd Embodiment of this invention, Comprising: It is a perspective view of the slide seat for vehicles to which the wire harness holding structure was applied.

First, the sliding movement structure of the vehicle slide seat will be described.
As shown in FIG. 1, a pair of sliders 11, 11 extending in the front-rear direction of a vehicle body (fixed structure) (not shown) are provided on the bottom surface of the vehicle slide seat (movable structure) 10. The front end portions of the sliders 11 are connected to each other by a connecting bar 12 horizontally mounted between the pair of sliders 11 and 11.

  A pair of guide rails 13, 13 extends in the front-rear direction of the vehicle body corresponding to the pair of sliders 11, 11 on the floor of the vehicle body. As the sliders 11 move along the corresponding guide rails 13, the seat 10 slides in the front-rear direction of the vehicle body.

  The wire harness 15 is routed across the vehicle body and the seat 10, and the wire harness holding structure of the present embodiment includes a movable side holding portion 16 that holds the wire harness 15 in the seat 10, and the vehicle body. And a fixed side holding portion for holding the wire harness.

  The fixed side holding portion is a floor-bound connector 14 attached to the inside of the front end portion of one guide rail 13, and one end of the wire harness 15 is connected thereto. In addition, the movable side holding portion 16 is attached to the connecting bar 12 and holds a part of the wire harness 15.

  As shown in FIGS. 2 and 3, the movable side holding portion 16 includes a corrugated tube 17 and a fixing member 18 fixed to the sheet 10, both of which are made of synthetic resin.

  The fixing member 18 is provided with a shaft hole 24 that opens on the upper surface of the fixing member 18 and extends vertically downward, and a lead-out hole 25 that communicates with the lower end of the shaft hole 24. The opening 25a of the lead-out hole 25 is formed so as to expand and open in a fan shape around the axis of the shaft hole 24 at a predetermined center angle (approximately 90 degrees in the illustrated example).

  The wire harness 15 is sequentially inserted through the shaft hole 24 and the lead-out hole 25 while being bent at the connecting portion between the shaft hole 24 and the lead-out hole 25 of the fixing member 18 and is led out toward the floor-bound connector 14. The wire harness 15 led out from the lead-out hole 25 is covered with a corrugated tube 17 over a predetermined length. The corrugated tube 17 has appropriate rigidity and reinforces the wire harness 15 so that the wire harness 15 is not bent immediately after being led out from the lead-out hole 25.

  In the corrugated tube 17, annular irregularities 19 are alternately formed on the outer surface along the longitudinal direction, and one end of the corrugated tube 17 is inserted into the opening 25 a of the outlet hole 25. A guide rail 20 is formed on the peripheral edge of the opening 25 a of the lead-out hole 25 so as to be fitted to the irregularities 19 at one end of the corrugated tube 17 and extend in an arc shape around the axis of the shaft hole 24. The corrugated tube 17 is guided by the guide rail 20 and supported by the opening 25a of the outlet hole 25 so as to be rotatable around the axis of the shaft hole 24, and the guide rail 20 regulates the removal of the outlet hole 25 from the opening 25a. Has been.

  The shaft hole 24 is formed to have a larger diameter than the wire harness 15, and thus the wire harness 15 is rotatably supported in the shaft hole 24. The wire harness 15 led out from the shaft hole 24 is firmly attached to a support piece 26 erected at a position adjacent to the opening edge of the shaft hole 24 with a binding member such as an adhesive tape 30. It is fixed. For this reason, as the wire harness 15 led out from the lead-out hole 25 turns around the axis of the shaft hole 24 together with the corrugated tube 17, twisting occurs in the portion of the wire harness 15 that is mainly accommodated in the shaft hole 24. .

  The movable side holding portion 16 configured in this way is engaged with the connecting bar 12 by engaging the hook 31 provided on the fixed member 18 with the locking hole 32 (see FIG. 4) provided on the connecting bar 12. It is attached. As shown in FIG. 4, a plurality of locking holes 32 are provided at predetermined intervals in the longitudinal direction of the connecting bar 12, and by engaging the hooks 31 with the appropriate locking holes 32, The width direction of the sheet 10, that is, the direction orthogonal to the sliding movement direction of the sheet 10 (in this embodiment, the width direction of the sheet 10 horizontal to the floor, but the direction orthogonal to the sliding movement direction in the present invention is The distance between the floor-bound connector 14 and the movable side holding portion 16 along the floor (including horizontal, vertical, and the combination thereof) can be adjusted.

Next, with reference to FIG. 4, operation | movement of the above-mentioned wire harness holding structure is demonstrated.
4A to 4D show a state in which the seat 10 sequentially slides forward.

  In the initial state shown in FIG. 4A, the floor-bound connector 14 is spaced in the width direction of the seat 10 and is positioned in front of the movable side holding portion 16. The corrugated tube 17 extends substantially forward.

  When the seat 10 slides forward from the state shown in FIG. 4A to the state shown in FIG. 4B, the floor connector 14 and the movable side holding portion 16 approach each other. For this reason, an extra length is generated in the wire harness 15 and the wire harness 15 bends. However, torque acts on the corrugated tube 17 due to the rigidity (restoring force) of the wire harness 15, and the corrugated tube 17 rotates around the axis of the shaft hole 24. Turn to. Then, the wire harness 15 turns together with the corrugated tube 17, and the lead-out direction of the wire harness 15 from the tip of the corrugated tube 17 changes around the axis of the shaft hole 24. Thereby, the extra length of the wire harness 15 is absorbed.

  When the seat 10 slides forward from the state shown in FIG. 4B to the state shown in FIGS. 4C and 4D, the floor-bound connector 14 and the movable side holding portion 16 are separated from each other. Then, the corrugated tube 17 is turned by being pulled by the wire harness 15. When the corrugated tube 17 turns and the tip of the corrugated tube 17 faces the floor-bound connector 14 in the fully extended state of the wire harness 15 shown in FIG. 4D, the movable side holding portion 16 and the floor can be connected with the shorter wire harness 15. The outgoing connector 14 can be connected, and thereby the size of the wire harness holding structure is reduced.

  Here, as the wire harness 15 turns around the axis of the shaft hole 24 together with the corrugated tube 17, twisting occurs in a portion of the wire harness 15 that is mainly accommodated in the shaft hole 24. The stress applied to the harness 15 is relaxed.

  Further, the wire harness 15 is fixed to the vehicle body by a clamp 33 so as to be along the width direction of the seat 10 in the vicinity of the floor-bound connector 14. Thereby, the behavior of the wire harness 15 is stabilized and the occurrence of slack is regulated.

  Furthermore, the corrugated tube 17 and the fixed member 18 constituting the movable side holding part 16 are both made of synthetic resin, and are excellent in recyclability.

  In addition, this invention is not limited to each embodiment mentioned above, In the range which does not deviate from the summary of this invention, it can change suitably.

1 is a perspective view of a vehicular slide seat to which a wire harness holding structure is applied according to a first embodiment of the present invention. It is a disassembled perspective view of the principal part of the wire harness holding structure shown in FIG. FIG. 3 is an assembled perspective view of the main part shown in FIG. 2. It is a figure explaining operation | movement of the wire harness holding structure shown in FIG. 1, Comprising: It is the top view seen from the bottom face side of the vehicle slide seat. It is a perspective view which shows the state in which extra length generate | occur | produces in a wire harness with the slide movement of a slide sheet. It is a disassembled perspective view of the conventional wire harness holding structure. It is a top view explaining operation | movement of the wire harness holding structure shown in FIG.

Explanation of symbols

10 Vehicle slide seat (movable structure)
14 Floor connector (fixed side holding part)
15 Wire harness 16 Movable side holding part 17 Corrugated tube (reinforcing member)
18 Fixing member 19 Corrugated tube unevenness 20 Guide rail 24 Shaft hole 25 Lead-out hole 33 Clamp

Claims (4)

A wire harness holding structure for holding a wire harness arranged over a fixed structure and a movable structure that is slidably assembled to the fixed structure,
A movable side holding part that holds a part of the wire harness in the movable structure, and a fixed side holding part that holds the other part of the wire harness in the fixed structure,
The movable side holding portion is arranged so that the wire harness led out from the movable side holding portion toward the fixed side holding portion turns around the movable side holding portion as the movable structure slides. The wire harness is pivotally supported and bent,
The wire harness is covered with a reinforcing member except for the bent portion that is pivotally supported ,
The movable side holding portion is fixed to the movable structure, a fixed member provided with a shaft hole and a lead-out hole communicating with the shaft hole and expanding in a fan shape around the shaft hole; The reinforcing member that is externally attached to the wire harness that is sequentially inserted through the shaft hole and the outlet hole of the fixing member and led out toward the movable side holding portion,
The reinforcing member is supported by the opening of the outlet hole so as to be rotatable around the axis of the shaft hole;
The reinforcing member is a corrugated tube in which annular irregularities are alternately formed on the outer surface along the longitudinal direction,
A guide rail is formed at the opening of the lead-out hole so as to fit in the concave and convex portions of the corrugated tube and extend in an arc shape around the axis of the shaft hole so as to guide the corrugated tube slidably around the axis. <br/> A wire harness holding structure characterized by the above. The wire harness holding structure according to claim 1 , wherein the wire harness led out from the shaft hole of the fixing member is fixed to the fixing member. 3. The clamp according to claim 1 , further comprising a clamp for fixing the wire harness to the fixed structure so that the wire harness is along a direction orthogonal to the sliding movement direction in the vicinity of the fixed side holding portion. The wire harness holding structure as described in. The movable-side holding portion and the fixed-side holding part, according to any one of claims 1 to 3, characterized in that it is disposed apart from the direction perpendicular to the sliding direction of the movable structure Wire harness holding structure.

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