JP4444028B2 - 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,
Each of the fixed block and the moving block has a tube end grip portion for gripping an end portion of the flexible tube, and one end portion of the flexible tube is gripped by a tube end grip portion of the fixed block, and the other end Part is gripped by the tube end gripping part of the moving block,
The flat cable is held in its posture by a fixed block and a moving block so that the width direction is in the vertical direction in the flexible tube,
An annular projecting part is attached to the outer periphery of the flexible tube at a distance that allows the flexible tube to swing in the lateral direction from the tube end gripping portion of the fixed block and the tube end gripping portion of the moving block.
On both sides of the tube end gripping portion of the fixed block and the moving block, when the flexible tube swings its head in the lateral direction, the annular protruding component hits so that the bending radius of the flexible tube does not become smaller than the allowable bending radius. The receiving part to be regulated is formed,
It is characterized by this.

  In the power supply device for a sliding door according to the present invention, it is preferable that one or both of a portion that contacts the receiving portion of the annular protruding component and a portion that contacts the annular protruding component of the receiving portion are 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 device for a sliding door according to the present invention, the flexible tube gripped at both ends by the fixed block and the moving block can swing in the lateral direction near the tube end gripping portion of the fixed block and the moving block. In addition, since the bending radius of the flexible tube when swinging is regulated by the annular projecting part and the receiving portion so that the bending radius is not smaller than the allowable bending radius, the flexible tube is forcibly bent on the vehicle body side and the slide door side. There is no fear, and the space required for bending movement of the flexible tube can be reduced. In addition, the flat cable is bent to the left and right together with the flexible tube in the vicinity of the tube end gripping portion of the fixed block and the moving block. Since the allowable bending radius is much smaller than that of the round wire harness, there is no possibility that an excessive bending stress is applied 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 either or both of the part that contacts the receiving part of the annular projecting part and the part that contacts the annular projecting part of the receiving part are made of a rubber elastic body, the annular projecting part can receive even when the sliding door is suddenly opened and closed. The impact at the time of hitting the portion is alleviated, and therefore, the flexible tube and the flat cable therein 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 where the sliding door is closed, (B1) and (B2) show a state where the sliding door is being opened, (C1) and (C2) show a state where the sliding door is opened, and FIG. The slide 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 to the vehicle body side, 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 receiving portion 28 to be limited. 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 receiving portion 38 for limiting the swing range and an upper and lower groove portion 40 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. In addition, a bottom plate portion 44 and a top plate portion 46 that restrict vertical deflection of the flexible tube 16 are formed above and below the tube end gripping portion 36.

  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 by the vertical slot 34 in the movable block 14 and the vertical slot (not shown) in the fixed block 10, the flat cable 18 is also illustrated in the flexible tube 16. As shown in FIG. 5, the posture is maintained with the width direction directed in the vertical direction. The flexible tube 16 is given flexibility by corrugation, but it is easy to bend in the horizontal direction and difficult to bend in the vertical direction, and to keep the posture of the flat cable 18 so that the width direction is in the vertical direction. In addition, the cross section is formed vertically long. 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 the other end is gripped by the tube end gripping portion 36 of the moving block 14. On the outer periphery of the flexible tube 16, annular projecting parts 48 </ b> A and 48 </ b> B are attached apart from the tube end grips 26 and 36. The distance (the distance along the axis of the flexible tube) between one annular projecting part 48A and the tube end gripping part 26 of the fixed block 10 and the other annular projecting part 48B and the pipe end gripping part 36 of the moving block 14 The distance (same as above) is set so that the flexible tube 16 can swing in the horizontal direction between them. As shown in FIG. 6, the annular projecting parts 48 </ b> A and 48 </ b> B are divided in half so as to grip the flexible tube from above and below, and are joined and integrated with each other on both sides of the flexible tube. Ribs 50 are formed on the inner peripheral surfaces of the annular projecting parts 48A and 48B so as to fall in grooves on the outer peripheral surface of the flexible tube and prevent movement in the axial direction of the flexible tube.

  The receiving portions 28 and 38 formed on the fixed block 10 and the moving block 14 are bent by the annular projecting parts 48 </ b> A and 48 </ b> B when the flexible tube 16 sways in the lateral direction. The radius is regulated so as not to be smaller than the allowable bending radius.

  Further, the outer peripheral surfaces of the annular projecting parts 48A and 48B are formed of a rubber elastic body in order to mitigate an impact when it hits the receiving portions 28 and 38 of the fixed block 10 and the moving block 14. The part other than the rubber elastic body is a plastic molded body.

  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, the flexible tube 16 is in a state where the middle is almost extended as shown in FIG. 1 (A1), and both end sides are the tube end gripping portions 26, 36 of the fixed block 10 and the moving block 14. It is in a bent state in the vicinity. The bending radii at both ends of the flexible tube 16 are kept so as not to be smaller than the allowable bending radius when the annular projecting parts 48A and 48B abut against the receiving portions 28 and 38. 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 almost fully extended as shown in FIG. 1 (C1), and both ends are bent near the tube end gripping portions 26 and 36 of the fixed block 10 and the moving block 14. It will be in the state. Also at this time, the bending radii on both ends of the flexible tube 16 are kept so as not to be smaller than the allowable bending radius by the annular projecting parts 48A and 48B coming into contact with the receiving portions 28 and 38.

  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 slide door power supply apparatus is configured as described above, there is no risk of the flexible tube 16 being bent forcibly on the vehicle body side or the slide door side, and a space necessary for the bending movement of the flexible tube. Can be reduced. Further, the flat cable 18 is held in the flexible tube 16 so that the width direction is directed in the vertical direction, and the allowable bending radius when bent to the left and right in this posture is significantly smaller than that of the round wire harness. There is no possibility that an excessive bending stress is applied to the flat cable.

  Further, since the outer peripheral surfaces of the annular projecting parts 48A and 48B are formed of a rubber elastic body, even when the sliding door is suddenly opened and closed, the impact when the annular projecting parts 48A and 48B hit the receiving portions 28 and 38 is affected. As a result, the flexible tube 16 and the flat cable 18 in the flexible tube 16 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.

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 disassembled perspective view of the cyclic | annular protrusion component in the apparatus of FIG.

Explanation of symbols

10: fixed block 12: slide rail 14: moving block 16: flexible tube 18: flat cable 26: tube end gripping portion 28: receiving portion 34: vertical slot 36: tube end holding portion 38: receiving portion 40: groove 48A 48B: annular projecting part 52: U-turn box

Claims (4)

A fixed block attached to the 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, 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,
Each of the fixed block and the moving block has a tube end grip portion for gripping an end portion of the flexible tube, and one end portion of the flexible tube is gripped by a tube end grip portion of the fixed block, and the other end Part is gripped by the tube end gripping part of the moving block,
The flat cable is held in its posture by a fixed block and a moving block so that the width direction is in the vertical direction in the flexible tube,
An annular projecting part is attached to the outer periphery of the flexible tube at a distance that allows the flexible tube to swing in the lateral direction from the tube end gripping portion of the fixed block and the tube end gripping portion of the moving block.
On both sides of the tube end gripping portion of the fixed block and the moving block, when the flexible tube swings its head in the lateral direction, the annular protruding component hits so that the bending radius of the flexible tube does not become smaller than the allowable bending radius. The receiving part to be regulated is formed,
A power supply device for a sliding door characterized by that.   2. The power supply device for a sliding door according to claim 1, wherein one or both of the portion of the annular projecting part that contacts the receiving part and the part of the receiving part that contacts the annular projecting part are formed of a rubber elastic body. A power supply device for a sliding door.   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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