JP4570407B2 - Power supply device for sliding door - Google Patents

Description

  The present invention relates to a sliding door power supply device for constantly supplying power and transmitting signals to a device in a sliding door from a vehicle body side of an automobile.

  Sliding doors are used in one-box cars and wagon cars. In order to operate the equipment in the sliding door (power window motor, switch, speaker, etc.), the equipment on the vehicle body (power supply, control device, etc.) and the equipment in the sliding door are always connected regardless of whether the sliding door is opened or closed. Must be electrically connected. Such a constant connection function is required for the sliding door power supply device.

  Conventionally, as a power supply device for a sliding door, a corrugated flexible tube containing a wire harness is routed between a predetermined position on the vehicle body side and the sliding door with a bend margin, and one of the flexible tubes is arranged. A device in which an end portion is fixed to a slide door and the vicinity of the other end portion is supported by a metal fitting attached to a vehicle body so as to be swingable in a horizontal direction is known (see Patent Document 1).

  As another type of power supply device for a sliding door, a flexible tube containing a wire harness is routed between a predetermined position on the vehicle body side and the sliding door with a bend margin. The other end is fixed to the vehicle body side and the vicinity of the other end is supported so as to be swingable in the horizontal direction by a metal fitting slidably attached to the sliding door (see Patent Document 2).

JP 2002-79892 A JP 2002-19546 A

  A conventional power supply device for a sliding door has a structure in which a flexible tube containing a wire harness is swung in a horizontal direction on the vehicle body side or the sliding door side in accordance with opening / closing of the sliding door. However, since the flexible tube containing the wire harness has a relatively large bending rigidity and a large allowable bending radius, a large space is required to move the flexible tube containing the wire harness while swinging. Further, when swinging, the flexible tube and the wire harness are forcibly bent, and are easily damaged while the swinging is repeated.

  An object of the present invention is to provide a power supply device for a slide door that can flexibly move a flexible tube in a relatively small space according to opening and closing of the slide door.

A power supply device for a sliding door according to the present invention includes a fixed block attached to a vehicle body, a moving block attached to the sliding door directly or via a slide rail, a flexible tube connecting the fixed block and the moving block, A flat cable wired from the vehicle body side to the sliding door side through the fixed block, the flexible tube and the moving block,
The fixed block and the moving block limit the swing range when the tube end gripping portion that grips the end of the flexible tube and the flexible tube gripped by the tube end gripping portion swings in the horizontal direction. And a swing limiter that
One end of the flexible tube is gripped by the tube end gripping portion of the fixed block so that it can swing in the lateral direction with respect to the fixed block, and the other end is connected to the tube end gripping portion of the moving block. It is gripped and can swing in the horizontal direction with respect to the moving block,
The flat cable is held by a fixed block and a moving block so that the width direction is directed vertically in the flexible tube,
The swing limiter of the fixed block and the moving block has a plurality of guide projections on both front sides of the tube end gripping portion, and these guide projections have a virtual plane connecting the flexible tube contact portion. It is arranged to be a curved surface where the interval gradually increases as it moves away from the gripping part, so that the bending radius of the flexible tube does not become smaller than the allowable bending radius.
It is characterized by this.

  In the sliding door power supply apparatus according to the present invention, it is preferable that the guide protrusion is formed of a rubber elastic body.

  In the slide door power supply device according to the present invention, the moving block is slidably attached to a slide rail fixed to the slide door, and the slide rail is used when the moving block slides on the slide rail. It is preferably formed integrally with a U-turn box that accommodates the U-turn portion of the flat cable necessary to absorb the expansion and contraction of the flat cable.

  In the sliding door power supply apparatus according to the present invention, the flat cable enters the fixed block from the vehicle body side, enters the moving block through the flexible tube from the fixed block, enters the U turn box from the moving block, and enters the U turn box. It is preferable to be composed of a continuous one without a connection part on the way until it leaves.

  In the power supply apparatus for a sliding door according to the present invention, the flexible tube having both ends held by the fixed block and the moving block can swing in the horizontal direction in the fixed block and the moving block, and when swinging Since the bending radius of the flexible tube is regulated by the guide projection so that it does not become smaller than the allowable bending radius, there is no possibility that the flexible tube will be bent forcibly on the vehicle body side and the sliding door side. Space required for bending movement can be reduced. The flat cable is bent to the left and right together with the flexible tube in the fixed block and the moving block, but the width direction is in the vertical direction in the flexible tube, and the allowable bending radius when bent to the left and right in this posture. Is much smaller than a round wire harness, so there is no risk of applying an excessive bending stress to the flat cable. Therefore, it is possible to provide a sliding door power supply device that is small in size and has high long-term reliability.

  In addition, if the guide protrusions of the fixed block and the moving block are formed of a rubber elastic body, even when the sliding door is suddenly opened and closed, the impact when the flexible tube hits the guide protrusion is mitigated. The tube and the flat cable in the tube are not easily damaged, and the generation of abnormal noise can be prevented.

  1 and 2 show an embodiment of the present invention. In the figure, 10 is a fixed block attached under a step of the vehicle body, 12 is a slide rail fixed horizontally to the lower part of the slide door, 14 is a moving block attached slidably to the slide rail 12, and 16 is A flexible tube 18 connecting between the fixed block 10 and the moving block 14 is a flat cable wired from the vehicle body side to the sliding door side through the fixed block 10, the flexible tube 16 and the moving block 14. 1 (A1) and (A2) show a state in which the slide door is closed, (B1) and (B2) show a state in the middle of opening and closing the slide door, (C1) and (C2) show a state in which the slide door is opened, and FIG. The door is shown closed and open at the same time.

  As shown in FIGS. 1 and 3, the fixed block 10 includes a bracket 20 fixed to the vehicle body, a lead-out portion 22 that leads the flat cable 18 into the vehicle body, and a direction change that accommodates the direction change portion of the flat cable 18. The passage 24, the tube end gripping portion 26 for gripping the end of the flexible tube 16, and the swing range when the flexible tube 16 gripped at the end by the tube end gripping portion 26 swings in the lateral direction. And a swing limiter 28 for limiting. The fixed block 10 is configured by joining an upper molded product 10a and a lower molded product 10b.

  The moving block 14 is also configured by joining the upper molded product 14a and the lower molded product 14b shown in FIG. 4A as shown in FIG. The moving block 14 holds the flat cable 18 so that the width direction is in the vertical direction, the lead-out portion 30 that leads the flat cable 18 to the slide door side, the direction changing passage 32 that houses the direction changing portion of the flat cable 18. The vertical slot 34, the tube end gripping portion 36 for gripping the end of the flexible tube 16, and the neck when the flexible tube 16 gripped by the tube end gripping portion 36 swings in the lateral direction. A swing limiter 38 that limits the swing range and upper and lower grooves 40 that are slidably mounted on the slide rail 12 are provided.

  A rib 42 is formed on the inner surface of the tube end gripping portion 36 to hold the flexible tube so that it does not pull out by falling into the groove on the outer peripheral surface of the flexible tube.

  The swing limiter 38 has a plate-like shape extending inwardly from the left and right side walls 44A and 44B in a space surrounded by the left and right side walls 44A and 44B, the bottom plate 46, and the top plate 48. The guide protrusion 50 is formed. The guide projections 50 on both sides are arranged so that a virtual plane connecting the tip portions (portions where the flexible tube contacts) becomes curved surfaces that gradually increase in distance as the distance from the tube end gripping portion 36 increases. The bending radius is not smaller than the allowable bending radius. The guide protrusion 50 is made of rubber so that the impact when the flexible tube hits is reduced. In addition, parts other than the guide protrusion 50 of the moving block 14 are plastic moldings.

  The internal structure of the fixed block 10 shown in FIG. 3 is the same as the internal structure of the moving block 14.

  Since the flat cable 18 is regulated in the vertical direction in the width direction by the vertical slot 34 of the moving block 14 and the vertical slot (not shown) in the fixed block 10, the flat cable 18 is also shown in FIG. As shown in FIG. 4, the posture is maintained with the width direction directed vertically. The flexible tube 16 is provided with flexibility by corrugation, but is formed with a vertically long cross section in order to bend easily in the horizontal direction and difficult to bend in the vertical direction and to regulate the direction of the flat cable 18. ing. Although only one flat cable 18 is shown in the drawing, a plurality of flat cables 18 may be laminated.

  One end of the flexible tube 16 is gripped by the tube end gripping portion 26 of the fixed block 10 and can swing in the lateral direction within the swing limiter 28, while the other end moves. In a state of being gripped by the tube end gripping portion 36 of the block 14, the head can be swung in the lateral direction within the swing limiter 38.

  The moving block 14 is attached to the slide rail 12 as shown in FIG. That is, the slide rail 12 is composed of a pair of upper and lower parallel rails, and the moving block 14 is slidably mounted by attaching the groove portion 40 (see FIG. 4) formed on the upper and lower surfaces to the slide rail 12. It has been.

  The slide rail 12 is formed integrally with a U-turn box 52 having a substantially U-shaped cross section that accommodates the U-turn portion 18a (see FIG. 1) of the flat cable 18 (see FIG. 2). The moving block 14 has a flat cable lead-out portion 30 located at the lower part in the U-turn box 52. The lead-out portion 30 leads the flat cable 18 from the moving block 14 into the U-turn box 52 with its width direction oriented horizontally and the longitudinal direction directed to the sliding direction of the moving block 14. The flat cable 18 is bent in the direction changing passage 32 of the moving block 14 so as to be led out from the lead-out portion 30 in the above-described posture.

  The flat cable 18 exiting from the lead-out portion 30 to the U-turn box 52 makes a U-turn from the bottom to the top in the U-turn box 52 and is drawn out of the U-turn box 52. The end of the flat cable 18 drawn out of the U-turn box is connected to wiring or equipment in the slide door by a connector or the like. The U-turn portion 18 a of the flat cable 18 moves following the slide of the moving block 14, thereby absorbing the expansion and contraction of the flat cable 18 necessary for the sliding of the moving block 14.

  The fixed cable 10 is also formed with a flat cable lead-out portion 22 similar to the moving block 14. The end portion of the flat cable 18 on the vehicle body side is drawn out from the lead-out portion 22 into the vehicle body. However, the direction of the end of the flat cable 18 on the vehicle body side and the direction in the width direction are determined by the wiring structure on the vehicle body side, and need not be the same structure as the moving block 14. As the flat cable 18, a continuous cable having no connection part on the way from the vehicle body side to the inside of the slide door is used.

  The above is the configuration of the sliding door power supply apparatus. Next, the operation of this apparatus will be described. When the sliding door is closed, as shown in FIG. 1 (A1), the flexible tube 16 is in a state where the middle is almost extended, and both ends are bent in the fixed block 10 and the moving block 14. is there. When the slide door moves from this state in the opening direction, the slide rail 12 first moves together with the slide door, and the moving block 14 stays in the same position (moves relative to the slide rail 12). When the slide rail 12 moves by a predetermined distance, a stopper (not shown) hits the moving block 14 and the moving block 14 moves together with the slide rail 12 in the direction in which the slide door opens. In the middle of this, the swinging direction of the flexible tube 16 with respect to the moving block 14 is reversed, and the flexible tube 16 is bent into a substantially U shape as shown in FIG. When the sliding door further opens, the swinging direction of the flexible tube 16 with respect to the fixed block 10 is reversed in the middle. When the sliding door is fully opened, the flexible tube 16 is in a state where the middle is almost extended and both end portions are bent in the fixed block 10 and the movable block 14 as shown in FIG.

  When the sliding door closes, the process is almost reversed. First, the slide rail 12 moves integrally with the slide door. When the slide rail 12 moves a predetermined distance, a stopper (not shown) on the opposite side hits the moving block 14 and moves the moving block 14 in the closing direction. In the middle of this, the swinging direction of the flexible tube 16 with respect to the moving block 14 is reversed, and the flexible tube 16 bends in a substantially U-shape on the side opposite to when the door is opened. When the sliding door is further closed, the swinging direction of the flexible tube 16 with respect to the fixed block 10 is reversed in the middle of the sliding door. When the sliding door is fully closed, the state returns to the state shown in FIG.

  Since the power supply device for a sliding door is configured as described above, there is no possibility that the flexible tube will be bent forcibly on the vehicle body side or the sliding door side, and the space necessary for the bending movement of the flexible tube is eliminated. Can be small. In addition, the flat cable is held in the flexible tube so that the width direction is vertical, and the allowable bending radius when bent to the left and right in this position is significantly smaller than that of a round wire harness. There is no risk of excessive bending stress being applied.

  Further, since the guide protrusions of the fixed block and the moving block are formed of a rubber elastic body, even when the sliding door is suddenly opened and closed, the impact when the flexible tube hits the guide protrusion is mitigated. The tube and the flat cable in the tube are not easily damaged, and the generation of abnormal noise can be prevented.

  In the above embodiment, the case where the moving block 14 is attached to the sliding door via the slide rail 12 has been shown. However, when the opening / closing stroke of the sliding door is small, the sliding block is omitted and the moving block 12 is moved. It can also be attached directly to the sliding door.

  FIG. 6 shows another embodiment of the moving block used in the sliding door power feeding device of the present invention. The moving block 14 is different from the moving block 14 shown in FIG. 4 in that the guide protrusion 50 is formed in a column shape. Since the other configuration is the same as that of the moving block 14 shown in FIG. 4, the same parts are denoted by the same reference numerals and description thereof is omitted. The fixed block can also have the same configuration as the moving block 14 in FIG.

1 shows an embodiment of a power supply device for a sliding door according to the present invention, wherein (A1) is a plan view when the door is closed, (A2) is a front view inside the U-turn box when the door is closed, and (B1) is a door. (B2) is a front view inside the U-turn box while opening the door, (C1) is a plan view when the door is opened, and (C2) is a front view inside the U-turn box when the door is opened. . The perspective view which shows simultaneously the state at the time of the door closing of the apparatus of FIG. 1, and a door opening. The perspective view of the fixed block in the apparatus of FIG. 2A is an exploded perspective view of the moving block in the apparatus of FIG. 1, and FIG. The perspective view which shows the flexible tube in the apparatus of FIG. 1, and the flat cable accommodated in it. The other embodiment of the moving block in the electric power feeder for sliding doors of this invention is shown, (A) is a disassembled perspective view, (B) is a perspective view of an assembly state.

Explanation of symbols

10: fixed block 12: slide rail 14: moving block 16: flexible tube 18: flat cable 26: tube end gripping portion 28: swing limiter 30: lead-out portion 34: vertical slot 36: tube end gripping portion 38: Swing restriction part 40: groove part 50: guide protrusion 52: U turn box

Claims (4)

A fixed block attached to the vehicle body, a moving block attached to the slide door directly or via a slide rail, a flexible tube connecting the fixed block and the moving block, and passing through the fixed block, the flexible tube and the moving block. And a flat cable wired from the vehicle body side to the sliding door side,
The fixed block and the moving block limit the swing range when the tube end gripping portion that grips the end of the flexible tube and the flexible tube gripped by the tube end gripping portion swings in the horizontal direction. And a swing limiter that
One end of the flexible tube is gripped by the tube end gripping portion of the fixed block so that it can swing in the lateral direction with respect to the fixed block, and the other end is connected to the tube end gripping portion of the moving block. It is gripped and can swing in the horizontal direction with respect to the moving block,
The flat cable is held by a fixed block and a moving block so that the width direction is directed vertically in the flexible tube,
The swing limiter of the fixed block and the moving block has a plurality of guide projections on both front sides of the tube end gripping portion, and these guide projections have a virtual plane connecting the flexible tube contact portion. It is arranged to be a curved surface where the interval gradually increases as it moves away from the gripping part, so that the bending radius of the flexible tube does not become smaller than the allowable bending radius.
A power supply device for a sliding door characterized by that.   2. The sliding door power supply apparatus according to claim 1, wherein the guide protrusion is formed of a rubber elastic body.   The power supply device for a slide door according to claim 1 or 2, wherein the moving block is slidably attached to a slide rail fixed to the slide door, and the slide block includes a slide rail. A power supply device for a sliding door, characterized in that it is formed integrally with a U-turn box that accommodates a U-turn portion of a flat cable necessary to absorb expansion and contraction of the flat cable when sliding. The power supply device for a sliding door according to claim 3, wherein the flat cable enters the fixed block from the vehicle body side, enters the moving block through the flexible tube from the fixed block, enters the U-turn box from the moving block, A power supply device for a sliding door, characterized in that it is composed of a continuous one without a connection part on the way until it leaves the turn box.

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