JP2009153260A - Device for winding wiring harness for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To independently reel out both ends of a wiring harness, to avoid an effect caused by the elongation of one side, and to change reel-out lengths of both the ends. <P>SOLUTION: A device for winding a wiring harness for vehicle is configured such that: a first winding drum (10) and a second winding drum (20) are overlapped and connected with each other; the wiring harness (1) is wound around internal peripheral surfaces of both the winding drums; a hole (22) for making the wiring harness pass therethrough is formed at a boundary of both the winding drums; a locking bracket (30) for stopping the reel-out of the wiring harness is arranged at the hole; winding springs (2), (2') which act so as to be wound to internal sides of wiring-harness winding portions in both the winding drums so as to oppose each other are arranged; and both ends (1A), (1B) of an electric line of the wiring harness are pulled out on external peripheral surfaces of both the winding drums so that both the ends reversely oppose each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wire harness winding device for a vehicle in which, for example, a wire harness arranged between a vehicle body side and a door side of an automobile is drawn out and wound up following the opening / closing operation of the door.

  As a conventional winding device, in a place where the door is hinged to the vehicle body, a case for accommodating the extra length portion of the door harness routed from the vehicle body side in a meandering manner is disposed. Is known in which a plurality of coil springs are arranged in parallel, and a harness receiver is connected to one end side of one coil spring and the other end side of another adjacent coil spring. That is, the harness receivers are arranged in a staggered pattern alternately on one end side and the other end side of the adjacent coil springs, and the extra length of the door harness is alternately arranged on the harness receivers arranged in the staggered pattern inside the case. It is housed in a meandering state. Therefore, with the opening and closing operation of the door, the meandering length portion of the door harness is pulled out of the case and pulled back each time. When such traction force acts on the door harness, the harness receiver moves against the coil spring or moves back and forth on the spring axis with its elastic force.

  In such a conventional device, the extra length of the door harness is withdrawn in a meandering manner against the elastic force of the coil spring and pulled back inside the case. There was a drawback that it was easy to cause disconnection. In addition, since many coil springs are used, the entire structure is complicated and the manufacturing cost is increased. Furthermore, coupled with the fact that a large number of coil springs are arranged to complicate the structure, the size of the case itself that accommodates them increases in size, which is disadvantageous if the installation space is severely restricted like an automobile.

Therefore, in order to eliminate these drawbacks, the one described in Patent Document 1 below has been developed. That is, one end side of the wire harness is connected to the structure main body, the other end side is connected to a movable body that opens and closes with respect to the structure main body, and the wire harness is rotatably provided inside the winding case. The winding drum is fed out and wound up following the opening and closing movement of the movable body, and the winding drum is rotated and urged in the normal rotation direction that is the winding direction of the wire harness by the winding spring provided inside the winding case. This is a wire harness winding device. More specifically, the take-up drum has a circular drum body that rotates on a rotating shaft. The first-stage take-up drum is on one side of the drum body, and the second-stage take-up drum is on the other side. Are provided on concentric circles, and a part of the drum body is cut out to provide a harness passage opening, in which a guide roller is rotatably supported to support the extra length of the wire harness. Wound around the first-stage winding drum, passed through the harness passage port, guided by a guide roller, and U-turned, and the extra length of the U-turned wire harness was further wound around the second-stage winding drum. It is what.
JP 2001-218350 A (2nd page, FIG. 4)

  In the conventional apparatus described in Patent Document 1, since there is one winding drum, the wire harness can be fed and wound only at both ends simultaneously. In addition, the length of the wire harness can be set only with the same length around the rotation axis.

  In view of this, the present invention provides two winding drums that overlap each other with respect to the expansion and contraction of the wire harnesses at both ends so that the winding harnesses are independent from each other so that they are not affected by the expansion and contraction of the wire harnesses on one side. An object of the present invention is to provide a wire harness winding device for a vehicle that can change the angle.

  In order to achieve the above-mentioned object, the present invention relates to a first winding drum and a second winding drum which are overlapped and connected, and a wire harness is wound around the inner peripheral surface of both winding drums. A hole for passing the wire harness is opened at the boundary of the drum, and a bracket for locking the wire harness is provided in this hole, and the inside of the wire harness winding portion in both winding drums is opposite to each other. Winding springs acting so as to wind in the direction are arranged, and both ends of the wire harness are pulled out on the outer peripheral surfaces of the winding drums so as to face in opposite directions.

  According to the present invention, the first winding drum and the second winding drum are overlapped and connected, the wire harness is wound around the inner peripheral surface of both winding drums, and the wire harness is formed at the boundary between both winding drums. A hole for passing the wire harness is provided, and a bracket for locking the wire harness is provided in the hole so that the wire harness winding portions in the winding drums are wound in opposite directions on the inner sides of the wire harness winding portions. Since the winding spring acting is arranged and both ends of the electric wire of the wire harness are drawn out so as to face opposite directions on the outer peripheral surface of both winding drums, both ends of the electric wire can be independently fed out, Also, the feeding length at both ends of the electric wire can be changed.

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

  FIG. 1 shows a state in which the first winding drum 10 and the second winding drum 20 are overlapped and connected, and only the first winding drum 10 is disassembled. The first winding drum 10 is housed by winding the wire harness 1 around its inner peripheral surface, and one wire end that is an extra length of the wire harness 1 is 1A of the first winding drum 10. It is pulled out on the outer peripheral surface and connected to, for example, the upper back panel (part of the vehicle body) side of an automobile. A winding spring 2 is disposed inside the wound wire harness 1 for unwinding one wire end 1A after unwinding. The winding spring 2 uses a spiral spring. The first winding drum 10 has an upper flange 10A and an intermediate flange 10B formed on the outer peripheral surface, has a cylindrical inner peripheral surface, and both upper and lower ends are open. The opening at the lower end is blocked by the fixed base 3, and the first winding drum 10 is fixed to the fixed base 3. A bearing cylinder 5 is provided on the central shaft 4 provided on the fixed base 3, and first and second winding drums 10 and 20 are provided on the coaxial concentric circle of the bearing cylinder 5.

  FIG. 2 is an exploded perspective view of the second winding drum 20, and the wire harness 1 shown in FIG. 1 is accommodated in the second winding drum 20 through a hole 22 formed in the bottom portion 21. The accommodation state of the wire harness 1 is wound around the inner peripheral surface in the same manner as in FIG. 1, and the surplus portion is drawn out to the outer peripheral surface as the other wire end 1B. This electric wire end 1B is connected to the luggage door side of an automobile, for example. In another example, the connection destinations of both the wire ends 1A and 1B are connected to the door side and the vehicle body side in the case of operating the side airbag provided on the door of the automobile.

  The outer periphery of the bottom portion 21 on the lower end side of the second winding drum 20 forms a flange 20A, and the other wire end 1B is drawn out to the body portion between the second winding drum 20 and the intermediate flange 20B. The bottom 21 is attached to the winding drum 10 so as to cover the upper end opening of the first winding drum 10. The bearing cylinder 5 is inserted into the second winding drum 20 from the center hole 23 of the bottom 21. A winding spring 2 ′ similar to that shown in FIG. 1 is disposed inside the wire harness 1 in the second winding drum 20 with the winding direction opposite to that of the winding spring 2. Further, the upper end opening of the second winding drum 20 is covered with a fixing base 3 ′ similar to the fixing base 3 shown in FIG. 1, and the fixing base 3 ′ is attached to the winding drum 20. The fixed base 3 ′ is also provided with a central shaft 4 ′, and a bearing cylinder 5 is attached to the central shaft 4 ′.

  FIG. 3 is a side view showing a state in which the first winding drum 10 and the second winding drum 20 are overlapped and connected, and one wire end 1A and the other wire end 1B are drawn out in opposite directions. And rewinded. The wire harness 1 accommodated in the first and second winding drums 10 and 20 can draw the respective wire ends 1A and 1B to the outside from a drawing hole (not shown). Further, the movement of the wire harness 1 is stopped at a position where the wire harness 1 accommodated in the first and second winding drums 10 and 20 moves from one drum to the other drum, that is, at the position of the hole 22. Keep it. Thereby, the feeding amount of the wire harness 1 in the first winding drum 10 is also determined, and the feeding amount of the wire harness 1 in the second winding drum 20 is also determined. Then, when the wire end 1A or 1B is extended, the wound wire harness 1 is reduced in diameter, and the winding spring 2 or 2 'is reduced in diameter. When the pulling-out spring 2 (2 ′) having a reduced diameter is released from the pulling-out force of the wire end 1A (1B), the diameter of the winding spring 2 (2B) is increased to return by the spring force, and the wire end 1A (1B) is rewound into the drum. .

  In FIG. 4, a bracket 30 for locking the wire harness 1 is provided at the location of the hole 22, and the movement of the wire harness 1 at this location is stopped. As shown in FIG. 5, the bracket 30 is provided with a locking hole 30A for holding the wire harness 1 at the center, and the two members 30B and 30C are connected by a hinge 30D so as to divide the locking hole 30A. It is configured to be openable and closable, and when the two members 30B and 30C are closed, the closed state is held by the lock member 30E. Then, the wire harness 1 in the locking hole 30A is held. If the wire harness 1 is locked by the bracket 30 in the middle of the length from the wire end 1A to the wire end 1B, the amount of wire harness fed out is the same in both the first winding drum 10 and the second winding drum 20. However, if the locking position of the wire harness 1 by the bracket 30 is changed, it is possible to easily set different lengths in both feeding directions.

  In addition to the above-described driver side airbag, the winder includes a rear seat side airbag, a curtain airbag, an automobile seat harness, a knee airbag, an ITS head airbag, a motorcycle airbag, and a driver airbag. It can also be applied to wiring such as a back, passenger airbag, bonnet airbag, cushion airbag, and bumper airbag.

1 is a partially exploded perspective view showing an embodiment of the present invention. The exploded perspective view of the 2nd winding drum. Side view when assembled. The figure of the attached state which shows the bracket for wire harness latching. The top view of a bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire harness 1A, 1B Electric wire end 2, 2 'Winding spring 3, 3' Fixing base 10 1st winding drum 20 2nd winding drum 22 Hole 30 Bracket

Claims (2)

The first winding drum and the second winding drum are overlapped and connected,
Wrap a wire harness around the inner peripheral surface of both winding drums,
A hole for passing the wire harness is opened at the boundary between the winding drums, and a locking bracket for stopping the wire harness is provided in this hole.
Winding springs that act to wind in opposite directions to each other inside the wire harness winding parts in both winding drums,
A wire harness winding device for a vehicle, wherein both ends of the electric wire of the wire harness are drawn out on the outer peripheral surfaces of both winding drums so as to face in opposite directions.   The bracket for locking the wire harness is for holding the wire harness by holding the wire harness with two members that can be opened and closed by a hinge, and can hold the wire harness at an arbitrary position of the wire harness. The wire harness winding device for a vehicle according to claim 1.

Images