JP2008094132A - Harness wiring structure for link type movable structure body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly absorb an excessive length without an anxiety of disconnection or the like even in a thick wiring harness, and to attain space saving by particularly eliminating a bent space of the wiring harness at a fixed structure body side. <P>SOLUTION: A movable structure body 1 is connected to the fixed structure body 3 so as to be turnable by a link arm 2, and the wiring harness 10 is horizontally wired from the fixed structure body to the movable structure body along the link arm. The wiring harness 10 is bent at the end side of the link arm 2 at the fixed structure body side to form a vertical part 10b on the wiring harness, and the vertical part is made twistable in a peripheral direction accompanied by the turning of the movable structure body. A harness protector 9 is provided at the link arm 2, and a cylindrical member 14 is vertically provided at the end side of the harness protector. A rotation grommet 16 is engaged with the cylindrical member so as to be turnable, and the vertical part 10b of the wiring harness is penetrated from the cylindrical member along the rotation grommet. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a harness routing structure for a link-type movable structure that supports, for example, a door of an automobile as a movable structure so as to be opened and closed with a link and routes a power supply wire harness along the link.

  FIG. 4 shows one form of a conventional harness routing structure for a link type movable structure (see Patent Document 1).

  This link type movable structure is a link type door 62, and the door 62 is supported on the vehicle body 70 by a single substantially L-shaped support arm 71 so as to be swingable. The support arm 71 has high rigidity to support the dead weight of the door 62.

  In addition to the support arm 71, a pair of front and rear link arms 65, 66 are provided in parallel. The base ends of the link arms 65, 66 are pivotally supported by the vehicle body 70, and the distal ends of the link arms 65, 66 are provided. Is rotatably supported by a slider 64, and the slider 64 is slidably engaged with a horizontal guide rail 63 on the door side.

  As a harness support structure, a wire harness 68 is routed from the vehicle body side along the outer surface of the front link arm 66, fixed to the link arm 66 by a holder 72, and a caterpillar following the slider 64 in the guide rail on the door side. It is introduced into the door while being bent in a substantially U-shape or J-shape along the outer casing member 69, and is connected to auxiliary equipment and electrical equipment in the door. The right side in FIG. 4 is the vehicle front side.

  Examples of the auxiliary machine include a power window motor, a door lock unit, a speaker, a door opening / closing drive device, and the like. Link arms 65, 66, a guide rail 63, a slider 64, and an exterior member 69 are employed as a mechanism for absorbing the opening / closing stroke of the door 62 in order to constantly supply power to these auxiliary machines. The exterior member 69 is received by a storage case 67 below the guide rail 63.

  When the door 62 is fully closed, the support arm 71 and the link arms 65 and 66 extend forward, the slider 64 moves to the front end side of the guide rail 63, and one of the wire harnesses 68 is accommodated by the bending operation of the exterior member 69. 67. The wire harness 68 rotates together with the link arm 66.

When the door 62 is fully opened, the link arms 65 and 66 maintain the door half-open state of FIG. 4, the support arm 71 extends rearward, the slider 64 moves to the rear end side of the guide rail 63, and the wire harness 68 It is pulled out backward together with the member 69.
Japanese Patent Application Laid-Open No. 10-175483 (FIGS. 5 and 9)

  However, in the conventional harness routing structure for a link type movable structure, the wire harness 68 is bent in a substantially U shape on the guide rail 63 side. There is a concern that it cannot be applied due to an increase in the number of circuits and an increase in the wire diameter due to an increase in the door mounting system and an increase in the capacity of the door opening / closing motor.

  Further, since the wire harness 68 is bent on the vehicle body 70 side (base end side of the link arm 66) when the door 62 is opened and closed (the bendable portion is indicated by reference numeral 68a), in addition to absorbing the extra length on the door side. Therefore, care must be taken so that the wire harness 68 does not bite into the link arm 66 or the like on the vehicle body side, and there is a concern that management is difficult, and a space for bending the wire harness 68 on the vehicle body side is secured. There was a concern that it had to be kept.

  Even when a door other than an automobile door or other movable structure is used as the movable structure, the same problem as described above occurs when the harness wiring structure for the link movable structure is applied. There was concern. Corresponding to the movable structure, the vehicle body and the like are collectively referred to as a fixed structure.

  In view of the above-described points, the present invention can absorb a surplus length without worrying about disconnection or the like even with a thick wire harness in response to an increase in the number of circuits on the movable structure side, and is accompanied by bending of the wire harness. An object of the present invention is to provide a harness wiring structure for a link-type movable structure that eliminates the concern about biting and that can save space by eliminating the bending space of the wire harness especially on the fixed structure side. To do.

  In order to achieve the above object, a harness routing structure for a link type movable structure according to claim 1 of the present invention is such that the movable structure is rotatably connected to a fixed structure by a link arm. A harness wiring structure for a link type movable structure in which a wire harness is routed horizontally from the fixed structure to the movable structure along the wire harness on the end side of the link arm on the fixed structure side Is bent to form a vertical portion in the wire harness, and the vertical portion can be twisted in the circumferential direction as the movable structure rotates.

  With the above configuration, the harness surplus length is absorbed by the vertical portion of the wire harness being twisted in the circumferential direction on the fixed structure side as the movable structure rotates. When the vertical portion is twisted, the length of the vertical portion is increased and extended, and when the vertical portion is untwisted, the vertical portion is shortened. In this way, the vertical portion is expanded and contracted.

  The harness routing structure for a link type movable structure according to claim 2 is the harness routing structure for a link type movable structure according to claim 1, wherein a harness protector is provided on the link arm, and the end of the harness protector is provided. A cylindrical member is provided vertically on the side of the part, a rotating grommet is rotatably engaged with the cylindrical member, and the vertical part of the wire harness is inserted from the cylindrical member along the rotating grommet. Features.

  With the above configuration, one end side of the vertical portion of the wire harness is supported by the cylindrical member, the other end side of the vertical portion is supported by the rotating grommet, and the vertical portion is twisted in the circumferential direction in the inner space between the cylindrical member and the rotating grommet. Arranged freely and waterproof and dustproof. The wire harness is routed from the harness protector through the tubular member to the stationary structure through the rotating grommet. When the movable structure rotates, the cylindrical member rotates integrally with the harness protector, and the rotating grommet rotates relative to the cylindrical member (the rotating grommet itself does not rotate). Twisted.

  The harness routing structure for a link type movable structure according to claim 3 is the harness routing structure for a link type movable structure according to claim 2, wherein the harness protector is a slide type. To do.

  With the above configuration, when the harness protector expands and contracts with respect to the link arm as the movable structure rotates in the forward / reverse direction (open / close), the wire harness extra length on the movable structure side is forced to the fixed structure side The extra length of the wire harness is reliably absorbed by the twisting operation of the vertical portion of the wire harness, and when the length is shortened, the extra length of the wire harness on the movable structure side is eliminated. Examples of the sliding harness protector include an inner protector that is slidable in the outer protector (the outer protector is fixed to the link arm and the wire harness is fixed to the inner protector), and the harness protector itself is linked. What slides along the guide part of an arm is employable.

  The harness routing structure for a link type movable structure according to claim 4 is the harness routing structure for a link type movable structure according to claim 2 or 3, wherein the harness protector has a vertical direction at an intermediate portion in the longitudinal direction of the harness protector. A step portion is formed, and the vertical portion is raised from the lower end side of the harness protector.

  With the above configuration, the vertical part of the wire harness is extended from the link arm up and down with a substantially equal length, so the vertical part does not protrude greatly from the link arm, and the extra length absorption structure is made compact and space-saving. The Further, when the harness protector is largely rotated together with the link arm, the harness portion following the vertical portion is accommodated in the step portion of the harness protector, thereby saving space. Further, when the harness protector is largely rotated together with the link arm, the harness portion following the vertical portion is accommodated in the step portion of the harness protector.

  The harness routing structure for a link type movable structure according to claim 5 is the harness routing structure for a link type movable structure according to any one of claims 1 to 4, wherein the rotating grommet is disposed on the fixed structure side. It is formed integrally with a cylindrical grommet.

  With the above configuration, the rotating grommet is stably supported on the fixed structure side together with the cylindrical grommet. The wire harness portion following the vertical portion is routed horizontally from the rotating grommet into the cylindrical grommet.

  The harness wiring structure for a link type movable structure according to claim 6 is the harness wiring structure for a link type movable structure according to any one of claims 1 to 5, wherein the link arm on the movable structure side is provided. The wire harness is bent at the end side to form a second vertical portion in the wire harness, and the second vertical portion can be twisted in the circumferential direction as the movable structure rotates. Features.

  As the movable structure rotates, the second vertical portion of the wire harness is twisted in the circumferential direction on the movable structure side to absorb the extra length. Absorption of excess length by twisting of the vertical portion of the wire harness on the fixed structure side is performed at the same time.

  According to the first aspect of the present invention, the wire harness absorbs the surplus length by the twisting operation instead of the conventional bending operation on the fixed structure side, so that the thick wire harness corresponds to the increase in the number of circuits on the movable structure side. However, the extra length can be absorbed without worrying about disconnection, etc., and the worry of biting of the wire harness caused by the bending operation and the expansion of the bending space of the wire harness on the fixed structure side are eliminated. In addition to improving the reliability of constant power supply to the battery, it is possible to save space on the fixed structure side and to increase the degree of freedom of layout of components and the like.

  According to the second aspect of the present invention, the vertical portion of the wire harness is smoothly and reliably twisted by the relative rotation operation of the tubular portion following the harness protector and the rotating grommet, and the extra length is reliably absorbed. Further, the vertical portion is safely protected from interference with the outside, rainwater, dust and the like inside the cylindrical portion and the rotating grommet. As a result, the reliability of constant power supply is improved.

  According to the third aspect of the present invention, the wire harness surplus length on the movable structure side is corrected and fed out to the fixed structure side by the sliding motion of the harness protector, and the surplus length absorption (twisting motion) in the vertical portion of the wire harness is smooth. And it is performed reliably and the extra length absorptivity improves.

  According to the invention of claim 4, the vertical portion of the wire harness is arranged in a space-saving manner by the step portion of the harness protector, and the wire harness portion extending from the vertical portion to the fixed structure side is also arranged in a space-saving manner. The

  According to the invention of claim 5, the rotating grommet is stably supported on the fixed structure side together with the cylindrical grommet, and the harness surplus length absorbability is increased.

  According to the sixth aspect of the present invention, the vertical portion of the wire harness is twisted on both the movable structure side and the fixed structure side, and the harness surplus length is reliably absorbed. In addition, since the bending of the conventional wire harness does not occur even on the movable structure side, it is possible to reliably absorb the extra length without worrying about disconnection or the like even with a thick wire harness corresponding to the increase in the number of circuits on the movable structure side. The concern about the biting of the wire harness caused by the bending operation and the expansion of the bending space of the wire harness on the movable structure side are eliminated.

  1 to 3 show an embodiment of a harness wiring structure for a link type movable structure according to the present invention.

  As shown in FIG. 1, the link type movable structure is a link type door 1 of an automobile, and the link type door 1 is supported by a link arm 2 so as to be swingable (rotatable) on a vehicle body 3 (FIG. 3) which is a fixed structure. Has been. The link arm 2 is formed of a metal material such as iron or aluminum alloy, for example, in a rectangular tube shape, and has high strength and rigidity. It is to be noted that another link arm (not shown) is provided facing the upper side of the link arm 2, another link arm (not shown) is provided in front of or behind the link arm 2, or the link arm 2. Alternatively, the door 1 can be supported on the vehicle body side by a guide rail (not shown).

  The distal end portion of the link arm 2 is rotatably supported by a link bracket 4 on the door (fixed structure) side by a shaft portion 6, and the base end portion of the link arm 2 is supported by a link bracket 5 on the vehicle body side by a shaft portion 7. It is supported rotatably. The link bracket 5 on the vehicle body (fixed structure) side is disposed inside a metal rocker portion 8 (FIG. 3) having a substantially U-shaped cross section. When a pair of front and rear parallel link arms is used, the pair of link arms are connected by a pair of left and right long link brackets.

  In FIG. 1, the left side is the vehicle front side, and the right side is the vehicle rear side. In FIG. 1, the solid line indicates the fully closed state of the door 1, and the chain line indicates the fully open state of the door 1. The door 1 is a door on the right side of the vehicle. When the door 1 is fully opened, the link arm 2 protrudes outward from the vehicle body 3 and extends obliquely rearward. An opening for getting on and off is formed on the front side of the door 1, and a crossing space is formed between the door 1 and the vehicle body 3. When the door 1 is fully closed, the link arm 2 falls to the front side, and the door 1 and the vehicle body 3 come into close contact with each other. When the door 1 is opened and closed, the link arm 2 swings, and the link brackets 4 and 5 are always positioned in parallel.

  A synthetic resin hollow substantially rectangular tubular harness protector 9 is horizontally disposed on the outer surface (front side surface) of the link arm 2, and the wire harness 10 is inserted into the harness protector 9. The harness protector 9 has a step portion 11 in the vertical direction in the middle portion in the longitudinal direction, the protector portion 12 closer to the door is located on the upper side via the step portion 11, and the protector portion 13 closer to the vehicle body is located on the lower side. ing.

  The harness protector 9 of this example is of a slide type and is slidable in the longitudinal direction with respect to the link arm 2. Thereby, when the door 1 is opened and closed, the eccentricity difference between the axis of the link arm 2 and the axis of the harness protector 9 is absorbed.

  For example, the harness protector 9 is composed of an outer protector and an inner protector, the outer protector is fixed to the link arm 2, and the inner protector is slidably engaged inside the protector portion 13 near the vehicle body of the outer protector. The wire harness 10 is fixed to the protector by fixing means such as tape winding or a band.

  Alternatively, the slide engaging portion of the harness protector 9 is slidably engaged with a guide rail provided on the link arm 2, and the wire harness 10 is fixed to the harness protector 9 by the fixing means.

  2 is a cross-sectional view taken along the line AA in FIG. 1 (showing a cross-sectional view of the harness protector 9 shown in FIG. 1 in a cross-sectional view), for example, a cylinder at the tip of the protector portion 13 of the harness protector 9 near the vehicle body. A cylindrical member 14 having a shape is provided so as to be integrally or separately fixed upward (perpendicular), and a cap-like (cylindrical) cap made of synthetic rubber (elastic) is provided on the flange portion 15 on the outer periphery of the upper end of the cylindrical member 14. A rotating grommet 16 is engaged so as to be rotatable in the circumferential direction.

  The wire harness portion 10a led out from the harness protector 9 is introduced into the inner space 17 and the inner space 18 of the rotary grommet 16 from the lower side of the cylindrical member 14, is vertically raised, and is accommodated in a circumferentially twistable manner and rotated. It is led out horizontally from the upper part of the grommet 16 toward the vehicle body. The wire harness 10 is bent in a substantially crank shape from the harness protector 9 to the vehicle body side.

  As the door 1 is opened and closed (rotation of the link arm 2), the cylindrical member 14 is rotated in the circumferential direction as indicated by an arrow B, and the rotating grommet 16 is fixed without being rotated. The harness surplus length is absorbed by the rising portion (vertical portion) 10 b being twisted in the circumferential direction (forward / reverse direction) between the tubular member 14 and the rotating grommet 16. The rotating grommet 16 rotates relative to the tubular member 14.

  As shown in FIG. 2, the wire harness portion 10 a is led obliquely downward along the distal end side wall portion of the outer protector 13 from the opening 21 of the inner protector 20 of the harness protector 9 and introduced into the cylindrical member 14. The inner protector 20 advances and retreats like a chain line and a solid line by a sliding operation.

  When the inner protector 20 moves forward, the extra length of the wire harness 10 is pushed out from the door side along the harness protector 9, and the extra length, that is, the wire accompanying the rotation of the link arm 2 by the twisting operation of the rising portion 10b of the wire harness 10. The slack of the harness 10 is absorbed. By twisting the rising portion 10b, the length of the electric wire portion in the rising portion 10b is increased as compared to before twisting, and this increased amount becomes the extra length absorption.

  In addition, when the extrusion amount (extra length) of the wire harness 10 is large when the inner protector 20 moves forward, the inclined portion 10c can be bent along the wall portion on the distal end side of the outer protector 13 to absorb the extra length. It is.

  When the harness protector 9 is slidably engaged along the guide rail of the link arm 2, the tubular member 14 is integrally provided at the tip of the harness protector 9, and the tubular member 14 is integrated with the harness protector 9. The tubular member 14 rotates integrally with the link arm 2 (harness protector 9) while slightly moving forward and backward along the link arm 2, and a wire harness is formed in the inner spaces 17, 18 between the tubular member 14 and the rotating grommet 16. Ten rising portions 10b are twisted in the circumferential direction.

  The cylindrical member 14 includes a bottom wall 22, an annular peripheral wall 23, and a flange 15 on the upper end outside, and has a slightly wider opening 24 for introducing a harness on the lower side portion of the peripheral wall 23. The opening 25 on the upper end side communicates with the inner space 18 of the rotating grommet 16.

  The rotating grommet 16 has an annular peripheral wall 26 and a rotary engagement member having a substantially U-shaped peripheral groove that is rotatably (slidably) engaged with the flange portion 15 of the cylindrical member 14 on the lower end side of the peripheral wall 26. It is comprised by the joint part 27, the ceiling wall 28 of a surrounding wall upper part, and the side part opening 19 narrow (it closely_contact | adheres to the wire harness part 10d) of a surrounding wall upper part.

  The rotating grommet 16 protrudes above the protector portion 13 of the harness protector 9 near the vehicle body. Vertical harness housing spaces 17 and 18 having a height (length) H are formed between the bottom wall 22 of the tubular member 14 and the top wall 28 of the rotating grommet 16, and the wire harness 10 is formed in the harness housing spaces 17 and 18. The rising portion 10b is located to be twistable and waterproof and dustproof from the outside.

  The height H of the harness housing spaces 17 and 18 is ensured in a space-saving manner by forming the harness protector 9 in a step shape at the intermediate portion in the longitudinal direction (the step portion is indicated by reference numeral 11 in FIG. 1).

  As shown in FIG. 1, the harness portion 10 d that is horizontally led out from the rotating grommet 16 includes a horizontal protector 29 on the side of the rocker portion 8 of the vehicle body 3 (FIG. 3) and a horizontal elastic waterproof grommet 30 that follows the protector 29. After that, it is introduced into the vehicle body (vehicle interior).

  A cylindrical grommet 31 made of synthetic rubber or the like is preferably disposed between the rotating grommet 16 and the protector 29, and the rotating grommet 16 is integrally formed at the tip of the cylindrical grommet 31. In this case, the narrow opening 19 of the rotary grommet 31 is not necessary, and the opening (19) communicates with the internal space of the cylindrical grommet 31.

  When the door 29 is opened, the protector 29 and the cylindrical grommet 31 enter a stepped space (replaced by reference numeral 11) above the protector portion 13 near the vehicle body of the harness protector 9, and the protectors 9 and 29 are linked. In the vicinity of the arm 2, it is located in a space-saving manner in the vertical direction.

  The protector 29 is formed in a rectangular cylindrical shape with a main body portion and a cover portion fixed to each other by a locking means. The waterproof grommet 30 includes a cylindrical portion 32 and a flange-shaped portion 33, a connector 34 is held inside the flange-shaped portion 33, and terminals of terminals of each wire of the wire harness 10 are accommodated in the connector 34. The hook-shaped portion 33 is in close contact with the peripheral edge of a hole (not shown) of the vehicle body 3, and the connector 34 protrudes into the hole and is connected to a wire harness (not shown) on the vehicle body side (power supply side). .

  As shown in FIG. 1, the wire harness portion 10e led out to the door side from the harness protector 9 on the link arm 2 side is raised vertically in an elastic waterproof grommet 35 arranged vertically on the door side, The rising portion (second vertical portion) 10f is twisted in the circumferential direction as the door 1 is opened and closed, and the extra length is absorbed. In this case, the rising portion 10f of the wire harness 10 is fixed to the tip portion of the bellows portion 35a of the grommet 35 by tape winding or the like.

  When the twist is not absorbed in the grommet 35, the wire harness 10 penetrates the grommet 35 and is vertically raised along the vertical portion 36 a of the synthetic resin protector 36 on the door side, and this raised portion 10 f is the door 1. As it is opened and closed, it is twisted in the circumferential direction to absorb the excess length.

  The wire harness 10 is bent along the horizontal portion 36b from the vertical portion 36a of the protector 36, and is fixed at the intersection of the vertical portion 36a and the horizontal portion 36b. The door inner panel passes through a door-penetrating elastic waterproof grommet 37. Introduced in 1a.

  The grommets 35 and 37 and the protector 36 are disposed inside the skirt (concave portion) 1 b of the door 1. A waterproof weather strip (not shown) is disposed on the outer periphery of the door inner panel 1a. The grommet 35 prevents water or the like from entering the protector 36.

  It should be noted that the grommet 35 on the lower side of the door is eliminated and the rising portion 10f of the wire harness 10 is introduced directly from the harness protector 9 on the link arm side to the door side protector 36, or the wire harness 10 is connected to the door side protector. It is also possible to fix it to a vertical flexible plate (not shown) below 36 by tape winding or the like so that it can swing in the horizontal direction (this configuration has been proposed separately).

  Without twisting the wire harness 10 at the door side (absorption of surplus length), the surplus length is absorbed by twisting the rising portion 10b of the wire harness 10 only in the tubular member 14 and the rotating grommet 16 on the vehicle body side. It is also possible to make it. In this case, the surplus length management points of the wire harness 10 are integrated into one point on the vehicle body side, and management becomes easier. Even when the wire harness 10 is twisted on both the door side and the vehicle body side to absorb the excess length, the wire harness 10 does not bend as in the conventional case, and thus management is easy (unnecessary).

  As shown in FIG. 3, when the door 1 is fully closed (shown by a solid line), the link arm 2 is rotated forward with the shaft portion 7 of the link bracket 5 on the vehicle body 3 side integrally with the harness protector 9. The rising portion 10b of the wire harness 10 is twisted in the circumferential direction in the space between the tubular member 14 on the vehicle body side and the rotating grommet 16 to absorb the excess length.

  Thereby, for example, without providing the rising part 10b of the wire harness 10, the cylindrical member 14, and the rotating grommet 16, the vertical cross section of the vehicle body 3 from the harness protector 9 as shown by the chain line 10 '. Compared to the case where the extra length is absorbed by bending the portion led out into the locker portion 8, the space for bending the wire harness 10 'in the locker portion 8 (accommodating recess indicated by reference numeral 39) becomes unnecessary, and the locker portion 8 is saved. Space and size are reduced, and the degree of freedom of arrangement of other parts in the locker is improved. Further, since the wire harness 10 does not bend (is only twisted) as described above, the concern that the bent portion (slack portion) of the wire harness 10 'is pinched when the door is closed is eliminated.

  When the chain-line door 1 is fully opened (when the link arm 2 swings backward), the vehicle body side rising portion 10b of the wire harness 10 is not twisted at all (no extra length). Is preferred. It is also possible to make the rising portion 10b untwisted when the door 1 is half-opened and twist it clockwise, for example, when the door 1 is fully opened, and counterclockwise when it is fully closed.

  In the above embodiment, a slide protector is used as the harness protector 9 on the link arm side. However, a single rectangular tubular harness protector is used instead of the slide protector, and the wire harness 10 is waved in the harness protector. By bending and accommodating, it is also possible to replace the expansion / contraction operation of the slide protector. In this case, the wire harness 10 extends linearly in the protector when the door is fully opened, and bends in a wave shape or a spiral shape in the protector when the door is fully closed.

  Moreover, in the said embodiment, although the synthetic rubber rotation grommet 16 was used, as the rotation grommet 16, the synthetic resin (hard) thing can also be used. In this case, the rotating grommet 16 is formed separately from the cylindrical grommet 31. The protector 29 on the vehicle body side can be replaced with a long cylindrical grommet (not shown) integrated with the front and rear grommets 30 and 31.

  Moreover, in the said embodiment, although the harness protector 9 was arrange | positioned along the link arm 2, it is also possible to abolish the harness protector 9 and to route the wire harness 10 along the outer surface or the inner surface of the link arm 2, for example. It is. In this case, the wire harness 10 is routed in the cylindrical member 14 so as to be able to be twisted in the vicinity of the shaft portion 7 of the link arm 2 or on the shaft center.

  Moreover, in the said embodiment, although the starting part 10b of the wire harness 10 was twisted by the relative rotation of the cylindrical member 14 and the rotation grommet 16 on the vehicle body side, for example, the rotation grommet 16 is eliminated. Then, the upper end side of the rising portion 10b is fixed to the rocker portion 8 of the vehicle body 3 with a fixing means such as a tape or a band, or the cylindrical member 14 is eliminated (using the rotating grommet 16). The lower end side of 10b is fixed to the tip of the harness protector 9 with fixing means, or the cylindrical member 14 and the rotating grommet 16 are eliminated, and the lower end side of the rising portion 10b is fixed to the tip of the harness protector 9 with fixing means. And it is also possible to fix the upper end side of the starting part 10b to the rocker part 8 of the vehicle body 3 by a fixing means. However, in this case, the waterproof and dustproofing of the wire harness 10 is not performed. This configuration is also applicable to the rising portion 10f of the wire harness 10 on the door side.

  In the above embodiment, the wire harness 10 is raised from the end of the link arm 2 on the vehicle body side (the raised portion is indicated by reference numeral 10b) and routed to the protector 29 on the vehicle body side. When the position of the body side protector 29 or the like is low, the wire harness 10 can be lowered (suspended) from the end of the link arm 2 and routed to the vehicle body side protector 29 or the like. In this case, the rising part 10b is called a hanging part. The rising portion 10b and the hanging portion are collectively referred to as a vertical portion.

  In addition to the link type door 1 of the automobile as a link type movable structure, a harness for the link type movable structure is used for a link type door of a train or the like, a link type door of a processing machine, an inspection device, or the like. It is also possible to apply a routing structure. In this case, a vehicle body of a train, a machine body of a processing machine, an apparatus body of an inspection apparatus, and the like are referred to as a fixed structure.

It is a perspective view which shows one Embodiment of the harness wiring structure for link type movable structures which concerns on this invention (a solid line is a fully closed state, and a chain line is a fully open state). It is AA sectional drawing of FIG. 1 which shows a harness surplus length absorption part. It is a top view (description figure) which shows the outline | summary of the harness wiring structure for link type movable structures. It is a perspective view which shows one form of the harness wiring structure for the conventional link type movable structures.

Explanation of symbols

1 Door (movable structure)
2 Link arm 3 Vehicle body (fixed structure)
9 Harness protector 10 Wire harness 10b Start-up part (vertical part)
10f Rising part (second vertical part)
11 Stepped portion 14 Tubular member 16 Rotating grommet 31 Tubular grommet

Claims (6)

  A harness for a link-type movable structure in which a movable structure is rotatably connected to a fixed structure by a link arm, and a wire harness is horizontally routed from the fixed structure to the movable structure along the link arm. In the routing structure, the wire harness is bent on the end side of the link arm on the fixed structure side to form a vertical portion in the wire harness, and the vertical portion is surrounded by the rotation of the movable structure. A harness routing structure for a link-type movable structure characterized by being freely twistable in the direction.   A harness protector is provided on the link arm, a cylindrical member is vertically provided on an end side of the harness protector, a rotating grommet is rotatably engaged with the cylindrical member, and the vertical portion of the wire harness is connected to the cylindrical arm. 2. The harness routing structure for a link type movable structure according to claim 1, wherein the harness is inserted along the rotary grommet from a cylindrical member.   The harness wiring structure for a link type movable structure according to claim 2, wherein the harness protector is a slide type.   The link according to claim 2 or 3, wherein a step portion in the vertical direction is formed at a longitudinal intermediate portion of the harness protector, and the vertical portion is raised from the lower end side of the harness protector. Harness wiring structure for a movable structure.   The harness routing structure for a link type movable structure according to any one of claims 1 to 4, wherein the rotating grommet is integrally formed with a cylindrical grommet on the fixed structure side.   The wire harness is bent on the end side of the link arm on the movable structure side to form a second vertical portion in the wire harness, and the second vertical portion is moved along with the rotation of the movable structure. 6. The harness routing structure for a link type movable structure according to any one of claims 1 to 5, wherein the harness routing structure can be twisted in a circumferential direction.

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