JP5545387B2 - Mounting device for wire harness for sliding door - Google Patents

Description

  The present invention relates to a mounting device for a wire harness for a sliding door, and more specifically, the wire harness spanned between the vehicle body and the sliding door suppresses a portion of the extra length from hanging down when the door is opened, and When it is stepped on by an occupant getting on and off, it follows and descends so that the wire harness is not damaged.

  In order to constantly supply power to the electrical components on the sliding door side, a wire harness is routed between the vehicle body and the sliding door. As this type of routing structure, for example, as shown in FIG. 10, a support device 3, 4 having a rotation mechanism is provided on a vehicle body 1 and a slide door 2, and a wire harness is installed in the support device 3, 4. A structure for supporting W / H is known.

  In the figure, the wire harness supported by the support devices 3 and 4 has a crossover portion of the wire harness W / H when the slide door 2 indicated by P1 is fully opened or at an intermediate point of opening and closing of the slide door 2 indicated by P2. Make a U-turn on the 1st boarding / exiting side. In this state, the wire harness is routed at a position that does not interfere with the occupant's stepping position, but when the occupant accidentally steps on or gets off, or when the occupant drops the load and hits the wire harness. There is. Since the wire harness has a low degree of freedom of movement in the vertical direction, if the wire harness is stepped on and an excessive load is applied from the vertical direction, the wire harness may be damaged.

  Therefore, in Japanese Patent Application Laid-Open No. 2004-25999 (Patent Document 1), the support devices 5 and 6 are not provided with the rotation mechanism as described above, and the wire harness W inserted through the caterpillar-shaped cable guide 7 as shown in FIG. A structure has been proposed in which / H is routed in an S shape between the vehicle body 1 and the slide door 2.

  When the wire harness is packaged with the caterpillar-shaped cable guide 7, the cable guide has high strength, so that the wire harness can be prevented from hanging when the door is opened and closed, and an excessive load is applied to the wire harness from the vertical direction. Can also protect the wire harness.

  However, when the wire harness is routed between the vehicle body and the slide door using the cable guide 7, the shortest distance between the vehicle body 1 and the slide door 2 by the cable guide 7 inserted through the wire harness W / H. Instead, it needs to be connected in an S shape. Therefore, the product cost increases, and there is a problem that the crossover portion of the wire harness W / H cannot be reduced by the cable guide.

  In addition, when the slide door 2 is opened and closed, the slide door 2 moves while tilting in the longitudinal direction of the vehicle body while tilting inward of the vehicle body, so that the support device 5 or 6 can be adapted to cope with the vertical movement of the slide door 2. It is necessary to provide a vertically movable mechanism that can swing in the vertical direction. However, there is a problem that the structure is further complicated and the cost is increased by the addition of such a mechanism.

  Moreover, in Unexamined-Japanese-Patent No. 2007-39030 (patent document 2), as shown in FIG. 12, the bending part protection member 9 curved in the up-down direction is arrange | positioned inside the slide door 2, and wire harness W / H is attached. It operates along the bending portion protection member 9, and the wire harness is bent upward to increase the degree of freedom of operation in the vertical direction. Therefore, it can operate in the vertical direction to absorb the impact of a fallen object such as a step or a plastic bottle.

  However, if it is set as the structure of patent document 2, as enclosed and shown with the continuous line 100 of FIG. 12 (B), the big space X for arrange | positioning the curved part protection member 9 inside a slide door is required. Speakers, motors, strength holding components, and the like are arranged at a relatively high density inside the slide door, and these components and the bending portion protection member 9 are likely to interfere with each other and are often difficult to arrange in space.

JP 2004-25999 A JP 2007-39030 A

  The present invention has been made in view of the above problems, and protects a wire harness that is routed between a vehicle body and a door without using the caterpillar-shaped cable guide of Patent Document 1 and protects the exterior of Patent Document 2 In this way, it is possible to prevent the wire harness from hanging down when the door is opened, and to follow the footstep when getting on and off the door without placing a protective member that takes up a large space in the vertical direction inside the sliding door. An object of the present invention is to prevent damage to the wire harness.

The apparatus for mounting a wire harness for a sliding door according to the present invention includes a wire that is bridged between a vehicle body side fixing bracket provided on a vehicle body and a door side fixing bracket provided at a position higher than the vehicle body side fixing bracket in the sliding door An apparatus for attaching a wire harness for a sliding door that supports a harness,
One end side of the door side fixing bracket is attached to the door side fixing bracket, the other end side supports one end side of the wire harness, and the one end side attached to the door side fixing bracket is the rotation center. the other end can and have been rotating body mounted rotating, and the rotary body, an urging member for urging the other end side to lift upward with one end of the wire harness is provided It is characterized by that.

  The wire harness bridged between the vehicle body and the slide door may be a round wire converging body whose core wire is covered with an insulating coating, or may be a belt-shaped flat harness.

  The wire harness of the present invention moves while taking a horizontal trajectory so as to avoid the position of getting on and off at the time of opening and closing the sliding door, but the wire harness may be stepped on or dropped by the passenger getting on and off. There is a risk that objects will hit the wire harness.

  In the present invention, in the door-side fixing bracket, a torsion coil spring for biasing the wire harness upward is interposed, and a force for constantly pulling the wire harness upward is applied. Therefore, when a load is applied from above, the degree of freedom of operation in the vertical direction is increased so that the load can be absorbed by absorbing downward. Therefore, the torsion coil spring can prevent the wire harness from drooping through the rotating body, and when the passenger is stepped on, the wire harness is extended downward, causing damage such as cutting of the wire harness due to the stepping. Can be prevented. Furthermore, after the stepping is released, the wire harness can be pulled up by the torsion coil spring and returned to the original position.

  Thus, in the present invention, without providing the large vertical bending portion protection member described in Patent Document 2, the biasing member is used to increase the vertical freedom of movement of the wire harness, and the wire harness hangs down. In addition, it prevents damage caused by stepping.

  The urging member is provided between the sliding door side fixing bracket and the rotating body. Although it may be provided between both the vehicle body side fixing bracket and the rotating body, since the sliding door side fixing bracket is disposed above the vehicle body side fixing bracket, the urging member for urging the wire harness upward is It is preferable to provide between the door side fixing bracket and the rotating body.

  Specifically, a cylindrical shaft portion is protruded from one of the door-side fixing bracket and the rotating body, and a bearing portion that rotatably fits the shaft portion is provided on the other side. A torsion coil spring is stretched between the outer peripheral portion of the bearing portion, and the rotating body is urged upward by the torsion coil spring, and the wire harness penetrating the rotating body is urged upward to prevent drooping. Yes. In addition, when a foot is stepped on by an occupant who gets on and off when the door is opened, or when a fallen object such as a plastic bottle hits the wire harness, the torsion coil spring extends and hangs down, absorbing the impact and damaging the wire harness. Occurrence can be prevented. In addition, after the impact load is released, the wire harness that is hung by the contraction of the torsion coil spring can be pulled up and returned to the original position.

  In addition, it is preferable to be able to rotate the axial part of a rotary body in a required angle range (for example, 90-120 degree | times). One end of the torsion coil spring is engaged with the shaft portion, and the other end is engaged with a spring engagement portion provided on the periphery of the bearing portion of the door-side fixing bracket. In a state in which the pair of door-side fixing brackets and the rotating body are combined, an insertion portion is provided to pass through the wire harness routed inside the slide door, and the wiring harness is provided to the rotating body from the insertion portion of the fixing bracket. The wire harness is pulled out from the other end opening of the rotating body. The pulled-out wire harness is covered with a corrugated tube and routed to the vehicle body side fixing bracket.

  The biasing means is not limited to the torsion coil spring, and may be a biasing means that is interposed between the door-side fixing bracket and the rotating body that is rotatably attached to the fixing bracket, and applies an upward biasing force to the rotating body. For example, a leaf spring may be used instead of the coil spring.

  In the invention according to claim 2, the door-side fixing bracket includes a substrate portion that is opposed to the rotating body from the vehicle body side and is pivotally attached to the rotating body.

  In the invention according to claim 3, the wire harness that is drawn out from the rotating body that is rotatably connected to the door side fixing bracket and is routed between the door and the vehicle body is covered with the corrugated tube.

  In Patent Literature 1, a caterpillar-shaped cable guide is used as an exterior material of a wire harness to increase the strength and protect the wire harness against the stepping. In the present invention, when the wire harness is stepped on, the torsion coil spring is used. Since the wire harness hangs down, the wire harness can be covered with a corrugated tube having a strength lower than that of the caterpillar-shaped cable guide.

  The corrugated tube is made of a resin molded product such as polypropylene, nylon, polypropylene terephthalate (PPT), or polyacetal (POM), and has a shape in which annular crests and troughs are alternately provided in the axial direction. The corrugated tube can be easily bent in a required direction, and is suitable as an exterior material for a wire harness that bends and operates when the door is opened and closed. In particular, the corrugated tube has an advantage that the exterior material can be downsized and is inexpensive.

  In addition, the exterior material of the wire harness at the transition portion between the slide door and the vehicle body is not limited to the corrugated tube, and is not particularly limited as long as it has a required strength and can be bent and bent smoothly. A tube made of rubber such as ethylene-propylene rubber (EPDM) or various elastomers may be used, and a tube made of rubber or elastomer is preferably provided with irregularities to form a bellows-like tube.

  In the invention according to claim 4, the urging member is a torsion coil spring interposed between the shaft portion provided on the rotating body and the bearing portion with respect to the shaft portion provided on the door-side fixing bracket, and the bearing portion. Is provided with a rotation stopper for restricting the rotation angle range of the shaft portion of the rotating body.

  According to the present invention, the wire harness routed between the slide door and the vehicle body is urged upward by the urging member provided on the door-side fixing bracket. Freedom of movement. Therefore, when the door is stepped on when the door is opened or a falling object hits, the wire harness can be hung downward to absorb the impact, and the wire harness can be prevented from being damaged. Thus, since the impact absorbing mechanism for the external load is achieved by interposing the biasing member, it is not necessary to protect the exterior with the high-strength caterpillar-shaped cable guide used in Patent Document 1. Moreover, since the reaction force which pulls up a wire harness is always added by the urging | biasing means, it can suppress that the part used as the extra length of a wire harness droops at the time of door opening. For this reason, unlike the patent document 2, it is not necessary to arrange | position the curved part protection member which takes a big space in an up-down direction inside a slide door.

The wire harness routed between the sliding door and the vehicle body of the embodiment of the present invention is shown, (A) is a schematic side view, (B) is a perspective view showing the operating state. It is a disassembled perspective view of the wire harness attachment apparatus by the side of a door. (A) (B) is a front view which shows a door side fixing bracket. The upper member of a rotary body is shown, (A) is a front view, (B) is sectional drawing. The lower member of a rotary body is shown, (A) is a front view, (B) is sectional drawing. A torsion coil spring is shown, (A) is a top view, (B) is a front view. It is a perspective view which shows a vehicle body side fixing bracket. The rotation locus | trajectory at the time of the opening / closing operation | movement of a door is shown, (A) is a top view, (B) is a side view. (A) (B) is a side view which shows the state in which a wire harness is stepped on in a fully open position. It is drawing which shows a prior art example. It is drawing which shows another prior art example. (A) and (B) are drawings showing still another conventional example.

Next, an embodiment in which the apparatus for mounting a wire harness for a sliding door of the present invention is embodied will be described with reference to the drawings.
1 to 9 show a first embodiment of the present invention.
An electric wire group in which a plurality of round electric wires (electric wires in which core wires are insulated and coated) is converged as a wire harness 10 spanned between the vehicle body 1 and a slide door 2 (hereinafter abbreviated as door 2). In addition, you may comprise a wire harness from the laminated body of a some flat harness.

  A door-side fixing bracket 11 and a vehicle-body-side fixing bracket 12 are attached to the door 2 and the vehicle body 1, respectively, and a rotating body 14 that guides the door-side fixing bracket 11 that is attached to the door 2 by penetrating and holding a wire harness within a required angle range ( In this embodiment, the shaft is rotatably attached at 120 degrees), and a torsion coil spring 15 is attached to the axially attached portion. The door side fixing bracket 11 is fixed to the door 2 at an intermediate position in the vertical direction of the door 2 as shown in FIG. 1, while the vehicle body side fixing bracket 12 is fixed to the floor side below the door 2. Yes.

  The wire harness 10 routed inside the door 2 is pulled out through the inside of the door-side fixing bracket 11 and the rotating body 14, the pulled-out wire harness 10 is covered with a corrugated tube 16, and the body-side fixing bracket 12 attached to the vehicle body 1 is attached. The inside of the vehicle body 1 is routed through the inside.

The door-side fixing bracket 11 and the rotating body 14 attached to the door 2 and the torsion coil spring 15 interposed between the door-side fixing bracket 11 and the rotating body 14 are configured as shown in FIGS.
The door-side fixing bracket 11 includes left and right side members 20 and 21, and a base end of one side portion of the rotating body 14 is rotatably sandwiched between the members and fixed to the door 2.

  As shown in FIGS. 2 and 3A and 3B, the left and right side members 20 and 21 of the door-side fixing bracket 11 include substrate portions 20a and 21a having substantially symmetrical shapes, and one corner portion of the substrate portion 20a. A door fixing hole 20b is provided at the front end of the protruding frame 21m at a position opposite to the board portion 21a. Further, door fixing holes 20c and 21c are provided at the corners and the corners at substantially diagonal positions. Further, a wire harness insertion frame portion 20e having a concave cross section from the upper end to the central portion is provided on the board portion 20a to form a wire harness insertion portion 20k, and an arc shape is formed at the lower end of the wire harness insertion frame portion 20e. The bearing portion 20f is provided. In addition, the bearing portion 20f is provided with a rotation stop portion 20i that restricts rotation of a shaft portion of the rotating body 14 to be described later within a range of 120 degrees. The other substrate portion 21a is provided with a lid portion 21e for closing the side opening of the wire harness insertion portion 20k, and a lower portion of the lid portion 21e is formed in an arc shape and a bearing portion 21f is provided. And the spring latching | locking part 21g connected to this bearing part 21f is provided.

  The rotating body 14 includes a lower member 30 shown in FIGS. 4A and 4B and an upper member 31 shown in FIGS. 5A and 5B, and the wire harness 10 is interposed between these members 30 and 31. The lock claw 30a provided on the lower member 30 is locked to the lock frame 31a provided on the upper member 31 in a locked state. Each of the lower member 30 and the upper member 31 is provided with elongated frame portions 30b and 31b having a recessed section shape on the connection side with the door-side fixing bracket 11, and the wire harness insertion portion by combining the frame portions 30b and 31b in the vertical direction. 32 is formed. A portion 30b-1 projecting in a fan shape in a side view is provided on the distal end side of the frame portion 30b of the lower member 30, and the portion 30b-1 communicates with the distal end opening of the frame portion 31b of the upper member 31 so that the lower side The wire harness 10 is pulled out from a rectangular opening 30b-2 provided in a tip portion 30b-1 of the member 30.

  Shaft portions 30c and 30d, 31c and 31d having a semi-annular shape are respectively protruded from the left and right sides of the base end side of the frame portions 30b and 31b, and the shaft portions 30c and 31c, 30d and 31d are vertically combined, As shown in FIG. 2, cylindrical shaft portions 33 and 34 are formed on both the left and right sides. A cylindrical shaft portion 33 protruding to the left side member 20 side of the door side fixing bracket 11 in the drawing is rotatably fitted in the bearing portion 20f of the door side fixing bracket 11 and protrudes to the right side member 21 side of the other side. The cylindrical shaft part 34 is rotatably fitted in the bearing part 21f of the member 21 on the other side.

  The cylindrical shaft portion 33 is longer than the cylindrical shaft portion 34, and a torsion coil spring 15 shown in FIG. 6 is wound around the outer periphery of the cylindrical shaft portion 33. A locking portion 15a protruding to the inner periphery of one end of the torsion coil spring 15 is locked to a locking hole (not shown) provided in the cylindrical shaft portion 33, while a locking portion protruding from the outer periphery of the other end. 15 b is locked to a spring locking portion 21 g provided on the right side member 21 of the door side fixing bracket 11.

  At the opposing positions of the inner surfaces of the lower member 30 and the upper member 31, concavo-convex portions 30e, 31e for locking the corrugated tube are provided. As described above, in the wire harness 10, the corrugated tube 16 is externally mounted on the cross wiring portion extending from the rotating body 14 to the vehicle body side fixing bracket 12, and one end of the corrugated tube 16 is placed in the rotating body 14. Positioned and locked to the concave and convex portions 30e and 31e.

  As shown in FIG. 7, the vehicle body side fixing bracket 12 attached to the vehicle body side is combined with substantially symmetrical upper and lower members 40 and 41 to form a wire harness insertion portion 42, and is provided on the upper and lower members 40 and 41. They are coupled by the lock coupling portion 43. In the coupled state, the bolt holes 44A and 44B provided on one side communicating with each other are fixed to the vehicle body 1, and the wire harness insertion portion 45 that expands in a fan shape is located on the other side, so that the wire harness is cross-routed 10 is drawn. On the inner peripheral surface surrounding the wire harness insertion part 42 of the upper and lower members 40, 41, a concavo-convex part 46 that fits in a mountain valley of the corrugated tube 16 is provided.

  After passing the wire harness 10 routed inside the door 2 through the wire harness insertion part 20k of the door side fixing bracket 11 fixed to the door 2 side as shown in FIG. The wire harness insertion portion 32 is passed through the cylindrical shaft portion of the rotating body 14. At that time, since the door-side fixing bracket 11 is formed by combining the left and right side members 20 and 21, and the rotating body 14 is formed by combining the upper and lower side members 30 and 31, the wire harness 10 is combined and locked and combined. The harness 10 can be easily passed through the inside of the door side fixing bracket 11 and the rotating body 14. The corrugated tube 16 that is externally mounted on the wire harness 10 is locked at one end inside the rotating body 14, is externally extended on the wire harness 10 to the vehicle body side fixing bracket 12, and is fixed to the vehicle body 1 side. The other end is locked by the concavo-convex portion 46.

  The wire harness 10 mounting device having the above-described configuration urges the rotating body 14 rotatably attached to the door-side fixing bracket 11 fixed to the door 2 in the direction of pulling it up by the torsion coil spring 15, and FIG. ), A reaction force for pulling upward is added so as to be substantially parallel to the vehicle front-rear direction at the door fully closed position (P3). The reaction force is about several N to 10N. When the door 2 is opened from the fully-closed position P3 to the fully-open position P1, the wire harness 10 operates along the rotation trajectory shown in FIGS. 8A and 8B, and the rotating body 14 is in FIG. Rotate as shown in (B). At that time, an upward reaction force is constantly applied to the rotating body 14 by the torsion coil spring 15 interposed between the rotary member 14 and the door side fixing bracket 11, and accordingly, the reaction force of the torsion coil spring 15 is increased according to the opening operation of the door 2. Against the force, at the intermediate position P2 in FIG. 8 (B), it operates while curving inward (inside the vehicle compartment) while inclining downward. In a state where the fully opened position P1 is reached, the tensile force generated by the wire harness 10 and the reaction force pulled upward by the torsion coil spring 15 are maintained in a balanced state, and the wire harness 10 does not rotate more than necessary, and the drooping of the wire harness 10 can be suppressed.

  The posture of the rotating body 14 at the fully open position P1 is a rotation state of about 60 degrees, which is about half of the rotatable angle range (120 degrees). Therefore, as shown in FIG. 9A, when the wire harness 10 at the crossing portion is stepped on at the fully open position P <b> 1 of the door 2, or a plastic bottle or luggage held by the occupant falls to the wire harness 10. When a downward load is applied from above, such as when hit, the rotating body 14 can rotate downward relative to the door side fixed bracket 11 against the reaction force of the torsion coil spring 15 as shown in FIG. The applied load can be absorbed by extending the wire harness 10 downward.

  Thus, since the wire harness follows the stepping or the like and extends downward, the exterior protection material of the wire harness 10 is not required to have high strength. Even if the exterior is covered with the corrugated tube 16 having a lower strength, the wire harness 10 can be prevented from being damaged. Further, when the load is released, the wire harness 10 extended downward by the reaction force of the torsion coil spring 15 is pulled upward, and the wire harness 10 can be prevented from drooping. Further, when the closing operation from the fully open position P1 to the fully closed position P3 is performed, the wire harness 10 operates in the reverse direction, and an upward biasing force is always applied by the torsion coil spring 15 at that time. The power can be reduced by the spring force of the torsion coil spring 15.

  In the above-described embodiment, the torsion coil spring 15 is used to route between the door 2 and the vehicle body 1 to increase the degree of freedom in the vertical operation of the wire harness 10 and to constantly pull the wire harness 10 upward. Since power is added, it is possible to suppress the hanging of the wire harness 10 at the crossover portion. In addition, the vertical operating range of the wire harness 10 is about 100 mm to 120 mm as shown by a one-dot chain line in FIG. 12B of the conventional example, and the movable dimension of the rotating body 14 in the front-rear direction is about 220 mm. Thus, it is less than half of the vertical operating range of Patent Document 2. Therefore, there is an advantage that the operation space of the wire harness is not taken inside the door and can be arranged so as not to interfere with the parts arranged inside the door.

  In addition, this invention is not limited to the said Example, Even if it always applies the force which pulls up the wire harness of a crossover part by attaching a rotary body to a vehicle body side fixed bracket rotatably and interposing a spring. Good. Furthermore, you may connect the rotary body which interposed the spring material in both the door side and the vehicle body side fixing bracket. Further, the urging member interposed between the door-side fixing bracket and the rotating body is not limited to the torsion coil spring, and even if a reaction force for pulling up the rotating body and the wire harness is applied via a leaf spring. Good.

1 ... body 2 ... door (sliding door)
DESCRIPTION OF SYMBOLS 10 ... Wire harness 11 ... Door side fixing bracket 12 ... Car body side fixing bracket 14 ... Rotating body 15 ... Torsion coil spring 16 ... Corrugated tube 20, 21 ... Both right and left members of door side fixing bracket 20k ... Wire harness insertion part 20f, 21f ... Bearing part 30, 31 ... Upper and lower both side members of rotating body 32 ... Wire harness insertion part 33, 34 ... Shaft part P1 ... Slide door fully open position P2 ... Intermediate position P3 ... Slide door fully closed position

Claims (4)

Mounting device for slide door wire harness for supporting a wire harness spanned between a vehicle body side fixing bracket provided on the vehicle body and a door side fixing bracket provided at a position higher than the vehicle body side fixing bracket in the sliding door Because
One end side of the door side fixing bracket is attached to the door side fixing bracket, the other end side supports one end side of the wire harness, and the one end side attached to the door side fixing bracket is the rotation center. the other end can and have been rotating body mounted rotating, and the rotary body, an urging member for urging the other end side to lift upward with one end of the wire harness is provided An apparatus for attaching a wire harness for a sliding door, characterized in that:   2. The wire harness for a sliding door according to claim 1, wherein the door-side fixing bracket has a substrate portion that is opposed to the rotating body from the vehicle body side and is pivotally attached to the rotating body. Mounting device.   The apparatus for attaching a wire harness for a sliding door according to claim 1 or 2, wherein the wire harness drawn out from the rotating body is covered with a corrugated tube.   The urging member is a torsion coil spring interposed between a shaft portion provided on the rotating body and a bearing portion with respect to the shaft portion provided on the door-side fixing bracket, and the rotation on the bearing portion. The apparatus for mounting a wire harness for a sliding door according to any one of claims 1 to 3, further comprising a rotation stopper that restricts a rotation angle range of the shaft portion of the body.

Images