JP2006306267A - Slide door power supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide door power supply device which has a small number of parts of a flat harness, is easily and inexpensively formed, and can stably perform electrical connection between a slide door side and a body side for a long time of period. <P>SOLUTION: The slide door power supply device is equipped with a flat harness 15 which is wired in a U-turn shape between a fixed part 6 at the slide door side and a fixed part at a body side, has an intermediate U-turn part 17 displaced according to opening/closing operation of the slide door, and electrically connects the slide door side and the body side. A plurality of pieces of flat harness 15 is wired so that a straight line part 18 except the U-turn part 17 is a curved shape 18a in the width direction, and a clearance S is formed between flat harnesses 15 in the U-turn part 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention electrically connects between a sliding door side fixing part and a body side fixing part for power supply and signal transmission necessary for opening / closing of a sliding door window glass, half-door detection, etc. in an automobile or other vehicle. The present invention relates to a sliding door power feeding device to be connected.

  As a conventional sliding door power feeding device, one having a structure as shown in a plan view of a main part in FIG. 7 is known. The sliding door 1 opens and closes by guiding and moving a roller unit 4 attached thereto via a lower arm 3 along a lower rail 5 provided on a body 2 of the vehicle. This sliding door power supply device is U-turned in the space below the lower rail 5 between the fixed part 6 on the slide door 1 side and the fixed part 7 on the body 2 side so that the width direction faces the vertical direction of the vehicle. The U-turn part (direction changing part) 9 is displaced according to the opening / closing operation of the slide door 1 to electrically connect the fixed part 6 on the slide door 1 side and the fixed part 7 on the body 2 side. A flat harness 8 is provided.

  As shown in FIG. 8, the flat harness 8 includes a flexible flat electric wire 10 in which insulators 12 are provided on both surfaces (peripheries) of a plurality of flat conductors 11 arranged in parallel at a predetermined interval in the width direction, and the electric wire. The flexible flat electric wire 10 is provided on one side of the wire 10 by an adhesive, heat fusion, or the like, and is held in a curved shape 10a so that the opposite side of the electric wire 10 that is changed in the width direction and the U-turn shape becomes a convex surface. It consists of the strip-shaped steel plate 13 which carries out. Reference numeral 14 denotes a heat shrinkable tube coated on the outer periphery of the flat harness 8 (see Patent Document 1).

JP 2000-177392 A

  In the conventional sliding door power feeding device, the flat harness 8 is firmly reinforced by the strip steel plate 13 over its entire length, and is bent in the width direction over the entire length including the intermediate U-turn portion 9. For this reason, although the uprightness is sufficiently maintained, there is a problem that the number of parts is increased and it takes time to form, and the cost of the sliding door power feeding device is increased. Moreover, since the U-turn part 9 also has a curved shape, it is not easy to change the direction of the flat harness 8 in the U-turn part 9, and the U-turn part 9 can be smoothly displaced according to the opening / closing operation of the slide door 1. become unable. For this reason, there is a problem that the flat harness 8 swells and the operation becomes unstable, and the electrical connection between the slide door 1 side and the body 2 side cannot be stably performed for a long time without maintenance.

  The present invention solves the above-described problems, and the number of parts of the flat harness is small, the formation is easy and the cost is low, and the slide that can stably make electrical connection between the slide door side and the body side for a long period of time. It aims at providing a door electric power feeder.

  The invention described in claim 1 of the present invention is arranged in a U-turn shape between the fixed component on the slide door side and the fixed component on the body side, and an intermediate U-turn portion according to the opening / closing operation of the slide door. In the slide door power supply apparatus provided with a flat harness that electrically connects the slide door side and the body side, the flat harness has a straight portion bent in the width direction except for the U-turn portion. It is characterized by that.

  The invention described in claim 2 of the present invention is the sliding door power supply device according to claim 1, wherein a plurality of flat harnesses are routed so that a gap is formed between the flat harnesses in the U-turn portion. It is characterized by being.

  According to a third aspect of the present invention, in the slide door power feeding device according to the first or second aspect, the flat harness is protected by being loosely inserted into a flexible cylindrical member having a smaller rigidity. It is characterized by this.

  According to the slide door power feeding device of the first aspect of the present invention, the flat harness has a straight portion excluding the U-turn portion that is bent in the width direction, so that the uprightness in the straight portion of the flat harness is Well maintained. Therefore, the strip-shaped steel plate which reinforces the flat harness is not required, the number of parts is reduced, the labor for forming the flat harness is not required, and the cost of the power feeding device can be reduced. In addition, since the U-turn portion has a linear shape in the width direction, the direction of the flat harness in the U-turn portion is changed, the shape change from the curved shape in the width direction of the straight portion to the straight shape of the U-turn portion, It becomes easy to change the shape from the straight shape in the width direction to the curved shape of the straight portion. Therefore, the U-turn part can be smoothly displaced according to the opening / closing operation of the sliding door, the operation of the flat harness is stable, and the electrical connection between the sliding door side and the body side is stable for a long time without maintenance. It can be carried out.

  According to the slide door power feeding device of the second aspect of the present invention, since the plurality of flat harnesses are routed so that a gap is formed between the flat harnesses in the U-turn portion, the flat harness is provided in the U-turn portion. When the direction changes to a U-turn shape, even if a difference occurs in the radius of curvature of the inner and outer flat harnesses, the difference in wire length of the flat harness is absorbed, and unreasonable compressive stress or tensile stress does not act on each flat harness. Therefore, the flat harness, the mounting and fixing of the flat harness and the sliding door side and body side fixing parts, and the connection structure are not adversely affected. In addition, even if a plurality of flat harnesses are wired, the direction of the flat harness in the U-turn part and the displacement of the U-turn part can be smoothly performed, and the electrical connection between the slide door side and the body side is the same. For a long period of time. Furthermore, since the thickness of the flat harness can be reduced by the thickness of the strip steel plate, it does not become bulky even if the number of flat harnesses increases, and the feeding capacity and signal transmission capacity can be increased as necessary. it can.

  According to the slide door power feeding device of the third aspect of the present invention, the flat harness is loosely inserted and protected by the flexible cylindrical member having a rigidity lower than that of the flat door. It becomes easy to change the direction of the cylindrical member. Therefore, the flexible tubular member does not change direction with a larger radius of curvature than the flat harness and does not spread excessively, and the flat harness routing shape can be prevented from being disturbed or collapsed. Further, since the flat harness is loosely inserted into the flexible cylindrical member, the direction change is not hindered by the flexible cylindrical member when the flat harness changes the direction in the U-turn portion. . Therefore, even if the flat harness is protected by the flexible tubular member, the U-turn portion can be smoothly displaced without hindrance according to the opening / closing operation of the sliding door of the sliding door.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of an essential part showing an embodiment of a sliding door power feeding device according to the present invention. FIG. 2 is a wiring diagram between a sliding door side fixing component and a body side fixing component in the sliding door power feeding device. FIG. 3 is a perspective view of a flat harness arranged in a U-turn shape between the two fixed parts. In addition, the same code | symbol is attached | subjected to the same fixed component as the sliding door electric power feeder of a prior art.

  As shown in FIG. 1, the sliding door power feeding device according to the present embodiment is arranged in a U-turn shape between a fixing component 6 on the sliding door 1 side and a fixing component 7 on the body 2 side, and opens and closes the sliding door 1. An intermediate U-turn part (direction changing part) 17 is displaced according to the operation, and a flat harness 15 that electrically connects the slide door 1 side and the body 2 side is provided. The sliding door 1 opens and closes by guiding and moving a roller unit 4 attached thereto via a lower arm 3 along a lower rail 5 provided on a body 2 of the vehicle. The flat harness 15 is arranged in a U-turn shape in the space below the lower rail 5 between the fixed component 6 on the slide door 1 side and the fixed component 7 on the body 2 side so that the width direction faces the vertical direction of the vehicle. Searched for.

  As shown in FIG. 2, the flat harness 15 is formed by, for example, molding a plurality of (three in the illustrated example) copper, aluminum, and alloy materials thereof arranged in parallel at a predetermined interval in the width direction. A film made of a plastic material such as polyethylene, polyethylene terephthalate, polyamide, polyimide, etc. is laminated on both sides (periphery) of the formed flat conductor (flat rectangular conductor) 20 and bonded, heat-sealed, or the like. It is comprised by the flexible flat electric wire (FFC) which provided the insulator 25 by carrying out extrusion coating.

  As shown in FIG. 3, the flat harness 15 is polymerized in the thickness direction in a non-bonded (non-adhered) state so that a plurality of the flat harnesses can move relative to each other. They are routed so that gaps S are formed.

  In addition, each flat harness 15 has a U-turn portion (including the vicinity thereof; hereinafter the same) 17 has a linear shape 17a in the width direction, and a portion excluding the U-turn portion 17, that is, both sides of the U-turn portion 17. The straight portion 18 is curved in a width direction and the curved portion 18a is formed so that the side facing the straight portion 18a of the flat harness 15 whose direction is changed into a U-turn shape is concave. Uprightness in the vertical direction is maintained. Along with this, the uprightness of the U-turn portion 17 is similarly maintained. As a result, the flat harness 15 does not swell particularly in the U-turn portion 17 in accordance with the opening / closing operation of the slide door 1, and the U-turn portion 17 is smoothly displaced even in a narrow wiring space. The operation is stable and good electrical connection between the slide door 1 side and the body 2 side is maintained.

  In order to make the straight portion 18 of the flat harness 15 into a curved shape 18a, as shown in FIG. 2, both ends of the flat harness 15 are fixed to the fixed component 6 on the slide door 1 side and the fixed component 7 on the body 2 side (not shown). ) So that both ends of the flat harness 15 are in the width direction, and the direction in which the straight portion 18a of the flat harness 15 that is changed in the direction of the arrow in FIG. This is done by bending and fixing to the fixing parts 6 and 7. Thus, even if both ends of the flat harness 15 are bent, the U-turn portion 17 is changed into a U-turn shape, so that the U-turn portion 17 is not bent in the width direction. The direction is maintained in a linear shape 17a.

  When the curvature radius of the curved shape 18 a of the straight portion 18 of the flat harness 15 is changed, the U-turn (direction changing) radius of the U-turn portion 17 in the middle of the flat harness 15 can be changed. When the curvature radius of the curved shape 18a of the straight portion 18 is increased, the U-turn radius of the flat harness 15 is reduced, and the durability of the flat harness 15, that is, the number of operations of the slide door 1 can be increased. Therefore, by selecting the curvature radius of the curved shape 18a of the straight portion 18 of the flat harness 15 in accordance with the number of opening / closing operations of the sliding door 1, an optimal sliding door power feeding device can be designed and manufactured.

  Further, by arranging a plurality of flat harnesses 15 so that a gap S is formed between the flat harnesses 15 in the U-turn portion 17, the flat harness 15 is oriented in a U-turn shape in the U-turn portion 17. When converting, even if a difference occurs in the radius of curvature of the inner and outer flat harness 15, the difference in wire length of the flat harness 15 is absorbed, and an excessive compressive stress or tensile stress does not act on each flat harness 15. Therefore, there is no adverse influence on the mounting and fixing structure of the flat harness 15 and the flat harness 15 and the fixing parts 6 and 7 on the slide door 1 side and the body 2 side. Further, even if a plurality of flat harnesses 15 are wired, the direction of the flat harness 15 in the U-turn part 17 and the displacement of the U-turn part 17 can be smoothly performed, and the sliding door 1 side and the body 2 side Similarly, the electrical connection can be performed stably for a long period of time. Furthermore, since the thickness of the flat harness 15 can be reduced by the thickness of the strip steel plate 13, it does not become bulky even if the number of the flat harness 15 increases, and the feeding capacity and signal transmission capacity can be increased as necessary. Can be increased.

  The sliding door power feeding device of the present invention has the above-described configuration. Therefore, as shown in FIG. 1, when the slide door 1 moves in the closing direction (the arrow direction in FIG. 1), that is, in the vehicle front side (left side in FIG. 1), the U-turn of the flat harness 15 follows this. The part 17 is also displaced in the direction in which the slide door 1 is closed, that is, moving forward (to the left in FIG. 1). On the other hand, when the sliding door 1 opens, that is, moves to the rear side of the vehicle (to the right in FIG. 1), the U-turn part 17 of the flat harness 15 follows the direction, that is, the sliding door 1 opens. Then, it moves to the rear side of the vehicle (displaced to the right in FIG. 1). Thereby, even during the opening / closing operation of the slide door 1, the slide door 1 side and the body 2 side are electrically connected, and power feeding and signal transmission are performed between them.

  The flat harness 15 is preferably protected by a flexible tubular member 24 as shown in FIG. 4 in order to increase the durability and the number of times it can be used. In the example shown in FIG. 4, a plurality of flat harnesses 15 are loosely inserted and protected by a flexible cylindrical member 24 having a lower rigidity. The flexible cylindrical member 24 has, for example, a semi-elliptical cross section (kamaboko shape), and is made of a plastic mesh tube, a braided tube, a polyvinyl chloride tube or the like in order to make the rigidity smaller than that of the flat harness 15. It is composed of a soft and flexible member.

  Since the flat harness 15 is loosely inserted and protected by the flexible tubular member 24 having a lower rigidity than the flat harness 15, the direction of the flexible tubular member 24 is easily changed in the intermediate U-turn portion 17. . Therefore, the flexible cylindrical member 24 does not change direction with a radius of curvature larger than that of the flat harness 15 and does not spread excessively, and the arrangement shape of the flat harness 15 is prevented from being disturbed or collapsed. Can do. In addition, since the flat harness 15 is loosely inserted into the flexible tubular member 24, the direction change is inhibited by the flexible tubular member 24 when the flat harness 15 changes the direction in the U-turn portion 17. There is no such thing. Therefore, even if the flat harness 15 is protected by the flexible cylindrical member 24, the U-turn portion 17 of the flat harness 15 can be smoothly displaced without hindrance according to the opening / closing operation of the slide door 1.

  In order to make the straight part 18 of the flat harness 15 bend in the width direction 18a, the flat harness 26 has a concave surface on the side facing the straight part 18 in the width direction as shown in FIG. It is also possible to use one that is self-held by the curved shape 18a. The insulators 28 provided on both surfaces (outer periphery) of the flat conductor 20 of the flat harness 26 are made of the same material as the insulator 22 but are harder and more rigid. Even when such a flat harness 26 is used, when the direction is changed from the straight portion 18 to the U-turn portion 17, the width is changed from the curved shape 18 a to the straight shape 17 a and the direction change from the U-turn shape 17 to the straight portion 18. When doing so, it smoothly and smoothly transitions from the linear shape 17a to the curved shape 18a in the width direction.

  In the case of manufacturing the flat harness 26, for example, as shown in FIG. 6, a plurality of flat conductors 20 are fed out in a parallel state in the direction of the arrow from the delivery drum 30 and placed in the crosshead 34 of the extruder 32. Supply. The crosshead 34 has an extrusion die (not shown) having a curved shape hole having a shape that matches the curved shape 18 a of the flat harness 26 and a radius of curvature, and a nipple having a plurality of guide holes for guiding the flat conductor 20. (Not shown). The flat conductor 20 is inserted into the nipple of the crosshead 34 and the extrusion die and travels in the direction of the arrow, and the plastic material melted and kneaded in the extrusion machine 32 passes through the resin passage between the extrusion die and the nipple and is flattened. An insulator 28 is provided by extrusion coating on both surfaces (outer periphery) of the conductor 20. The flat harness 26 provided with the insulator 28 is cooled and solidified in the cooling water tank 36 and wound around the winding drum 38.

  When the flat harness 26 has a curved shape 18a, the flat conductor 20 may also have a curved shape with the same radius of curvature as the insulator 28. If only the insulator 28 has a curved shape, the flat harness 26 can be easily shaped into a curved shape 18a, and labor can be saved. The insulator 28 may be mixed with an insulating reinforcing material such as glass fiber to increase its rigidity. The insulator 28 may be provided by a laminate coating of a plastic film having high rigidity.

  According to the sliding door power feeding device of the present invention, the flat harnesses 15 and 26 have the straight portions 18 excluding the U-turn portion 17 having a curved shape 18a in the width direction. The uprightness at is sufficiently maintained. Therefore, the strip-shaped steel plate 13 that reinforces the flat harnesses 15 and 26 is not necessary, the number of parts is reduced, the labor for forming the flat harnesses 15 and 26 is reduced, and the cost of the sliding door power feeding device can be reduced. it can. Further, since the U-turn portion 17 has a linear shape in the width direction, the direction change of the flat harnesses 15 and 26 in the U-turn portion 17, the curved shape 18 a in the width direction of the straight portion 18 to the straight shape 17 a of the U-turn portion 17. It is easy to change the shape of the U-turn portion 17 from the linear shape 17a in the width direction to the curved shape 18a of the linear portion 18. Therefore, the U-turn portion 17 can be smoothly displaced according to the opening / closing operation of the slide door 1, the operations of the flat harnesses 15 and 26 are stabilized, and the electrical connection between the slide door 1 side and the body 2 side is maintained. It can be performed stably for a long time without.

  If the flat harnesses 15 and 26 are routed so that the width direction thereof faces the vertical direction of the vehicle, the flat harnesses 15 and 26 are less likely to swing up and down due to their own weight or vibration of the vehicle, and interfere with contact with surrounding equipment fixing parts. This is preferable because it can be suppressed. Further, the flat harnesses 15 and 26 are routed so that the U-turn portion 17 is closer to the vehicle front side (the direction in which the slide door 1 is closed) than the fixed component 7 on the body 2 side. Thus, when the flat harnesses 15 and 26 are routed, the U-turn portions 17 of the flat harnesses 15 and 26 can be smoothly displaced following the opening / closing operation of the slide door 1. Moreover, even if the flat harnesses 15 and 26 are repeatedly bent many times, they are not easily damaged, so that stable quality can be maintained for a long period of time and maintenance work can be saved, which is preferable. The flat harnesses 15 and 26 may be routed so that the U-turn portion 17 is closer to the vehicle rear side (the direction in which the slide door 1 opens) than the fixed component 7 on the body 2 side. Even if it is wired in this way, the same effect can be obtained.

It is a principal part top view which shows one Embodiment of the sliding door electric power feeder which concerns on this invention. FIG. 2 is an enlarged cross-sectional view of a flat harness that is routed between a sliding door-side fixing component and a body-side fixing component in the sliding door power feeding device of FIG. 1. FIG. 2 is a perspective view illustrating a state in which a flat harness is routed in a U-turn shape between a sliding door-side fixing component and a body-side fixing component in the sliding door power feeding device of FIG. 1. It is a front view which shows the state by which the flexible cylindrical member was loosely inserted in the outer periphery of the flat harness shown to FIG. It is an expansion cross-sectional view which shows the modification of the flat harness shown to FIG. It is a schematic diagram which shows the manufacturing method of the flat harness shown in FIG. It is a principal part top view which shows the conventional slide door electric power feeder. In the sliding door electric power feeder of FIG. 7, it is XX arrow expanded sectional view of a flat harness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door 2 Body 3 Lower arm 4 Roller unit 5 Lower rail 6 Fixed component 7 Fixed component 13 Strip | belt-shaped steel plate 15 Flat harness 17 U-turn part 17a Linear shape 18 Linear part 18a Curved shape 20 Flat conductor 22 Insulator 24 Flexible cylindrical shape Member 26 Flat harness 28 Insulator 30 Delivery drum 32 Extruder 34 Crosshead 36 Cooling water tank 38 Winding drum S Gap

Claims (3)

  It is routed in a U-turn shape between the fixed part on the sliding door side and the fixed part on the body side, and the middle U-turn part is displaced according to the opening / closing operation of the sliding door, and the sliding door side and the body side are electrically connected. A slide door power supply apparatus including a flat harness connected to the flat harness, wherein the flat harness has a straight portion excluding the U-turn portion bent in a width direction.   The sliding door power feeding device according to claim 1, wherein a plurality of flat harnesses are routed so that a gap is formed between the flat harnesses in the U-turn portion.   3. A sliding door power feeding device according to claim 1, wherein the flat harness is protected by being loosely inserted into a flexible cylindrical member having a rigidity lower than that of the flat harness.

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