Wire harness

Abstract

A crossover part (11) passes through the inside of a tubular part (614) of an arm member (610), is drawn out from a first opening (610a) of the arm member toward a vehicle body-side assembly structure (20), and is drawn out from a second opening (610b) of the arm member toward a door-side assembly structure (30). The vehicle body-side assembly structure has: a harness sliding part (21a) which is fixed to a vehicle (510) and at which the crossover part drawn out from the first opening slides in the door opening / closing direction along the axial direction thereof; and a harness holding part (21b) which is fixed to the vehicle, and which holds and maintains the position of a vehicle body-side end part at the end of a part that is drawn out in the door opening direction from the harness sliding part and then bent back in a U-shape. The door-side assembly structure is provided with a harness holding member (31) which is fixed to a sliding door (520) and which holds and maintains the position of a door-side end part of the crossover part. The crossover part, in conjunction with a door opening / closing operation, slides inside the tubular part in the tube axis direction and slides at the harness sliding part in the door opening / closing direction.

Description

Wire harness

[0001] The present invention relates to a wire harness.

[0002] Conventionally, vehicles such as automobiles are equipped with a power supply device for a sliding door that electrically connects a power source (such as a secondary battery) on the vehicle body side to switches and electrical components on the sliding door side. In this power supply device for a sliding door, the electrical connection is performed by a wire harness. This wire harness has a crossover section of an electric wire that spans between the vehicle body and the sliding door, with one end of the crossover section fixed to a fixed section on the vehicle body side and the other end of the crossover section fixed to a fixed section on the door side. The crossover section is routed along an arm member of a link mechanism that also spans between the vehicle body and the sliding door. For example, Patent Document 1 listed below discloses a wire harness in which the crossover section passes through the arm member.

[0003] Japanese Patent Application Laid-Open No. 2017-1514

[0004] In this wire harness, the shortest path connecting the vehicle body-side fixed portion and the door-side fixed portion varies depending on the open / closed position of the sliding door relative to the vehicle body. Therefore, in the wire harness, when the shortest path between the vehicle body-side fixed portion and the door-side fixed portion is longest, the electric wires are routed without slack between the vehicle body-side fixed portion and the door-side fixed portion, and the path length of the electric wires is set as the length of the crossing portion. Here, the path length of the electric wires routed without slack between the vehicle body-side fixed portion and the door-side fixed portion is shorter when the shortest path between the vehicle body-side fixed portion and the door-side fixed portion is shortest than when the shortest path between the vehicle body-side fixed portion and the door-side fixed portion is longest. Therefore, the excess length of the crossing portion appears as an excess length when the shortest path between the vehicle body-side fixed portion and the door-side fixed portion is shortest. In conventional wire harnesses, the excess length of the crossing portion may detract from the appearance of the wires.

[0005] Therefore, an object of the present invention is to provide a wire harness that can improve the appearance.

[0006] The present invention provides a harness main body including a crossover section that is traversed along an arm member having one end journaled to the vehicle body via a vehicle-body-side rotation shaft whose axial direction is the vertical direction and the other end journaled to the sliding door via a door-side rotation shaft whose axial direction is the vertical direction, a vehicle-body-side routing section routed at a tip of the vehicle-body-side end of the crossover section, and a door-side routing section routed at a tip of the door-side end of the crossover section; a vehicle-body-side assembly structure that assembles the crossover section to the vehicle body; and a door-side assembly structure that assembles the crossover section to the sliding door, wherein the arm member has a bottom wall whose groove bottom faces in the door-opening direction or the door-closing direction of the sliding door, a pair of side walls that hang down from each end of the bottom wall in the same direction in the door-opening / closing direction of the sliding door, and a blocking wall that closes an opening formed by each free end of the pair of side walls, leaving a first opening on the vehicle body side and a second opening on the sliding door side, and the crossover section is disposed between the free ends of the pair of side walls and the bottom wall. and a harness slide portion fixed to the vehicle body for sliding the crossover portion drawn out from the first opening in the door opening / closing direction along its axial direction, and a harness holding portion fixed to the vehicle body for holding the vehicle-body-side end portion of the crossover portion drawn out from the harness slide portion in the door opening direction and folded back in a U-shape to maintain that position. The door-side assembly structure includes a harness holding member fixed to the sliding door for holding the door-side end portion of the crossover portion and maintaining that position. The crossover portion slides within the cylindrical portion in the axial direction of the cylindrical portion in conjunction with the door opening / closing operation of the sliding door, and is slid in the door opening / closing direction by the harness slide portion.

[0007] In the wire harness according to the present invention, the transition portion passes through the tubular portion of the arm member, thereby preventing deterioration of the appearance due to exposure of the transition portion and improving the appearance. Furthermore, in the wire harness according to the present invention, the transition portion slides in the axial direction within the tubular portion in conjunction with the opening and closing of the sliding door. In this wire harness, when slack occurs due to excess length of the transition portion as the sliding door opens and closes, a force acts on the transition portion. However, the transition portion can slide axially within the tubular portion to release the force, preventing deterioration of the appearance due to exposure of the transition portion and improving the appearance. Furthermore, the wire harness according to the present invention includes a harness slide portion, and the transition portion connects the harness slide portion and the harness holding portion in a U-shape. Therefore, the harness slide portion slides the transition portion pulled out from the first opening of the arm member in the door opening and closing direction in conjunction with the opening and closing of the sliding door. Therefore, this wire harness can absorb excess length in the bridge portion when the door is opened and closed, and the location where the excess length is absorbed can be controlled to the vehicle body side where the harness slide portion and harness holding portion are located, thereby improving the appearance.

[0008] FIG. 1 is a perspective view showing a wire harness of an embodiment when the door is fully open. FIG. 2 is a plan view of the wire harness of the embodiment when viewed from above the vehicle when the door is fully open. FIG. 3 is a perspective view of the wire harness of the embodiment when the door is fully closed. FIG. 4 is a plan view of the wire harness of the embodiment when viewed from above the vehicle when the door is fully closed. FIG. 5 is a perspective view of a wire harness of a modified example when the door is fully open. FIG. 6 is a plan view of the wire harness of a modified example when viewed from above the vehicle when the door is fully open. FIG. 7 is a perspective view of the wire harness of a modified example when the door is fully closed. FIG. 8 is a plan view of the wire harness of a modified example when viewed from above the vehicle when the door is fully closed.

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a wire harness according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0010] [Embodiment] One embodiment of a wire harness according to the present invention will be described with reference to Figs.

[0011] 1 to 4, reference numeral 1 denotes a wire harness according to this embodiment.

[0012] For example, a vehicle such as an automobile is known that is equipped with a sliding door 520 that can slide (move back and forth in a sliding direction) relative to a vehicle body 510. In this vehicle, a link mechanism provided with an arm member 610 or the like is interposed between the vehicle body 510 and the sliding door 520, and by operating this link mechanism, the sliding door 520 is opened and closed relative to the vehicle body 510 between a door fully closed position and a door fully open position.

[0013] One end of the arm member 610 is pivotally supported by the vehicle body 510 via a rotation shaft 621 on the vehicle body 510 side (hereinafter referred to as the "vehicle body-side rotation shaft") whose axial direction is the vertical direction (FIGS. 1 to 4). A first arm holding member 622 is fixed to the vehicle body 510, which holds one end of the arm member 610 rotatably around the axis of the vehicle body-side rotation shaft 621. The other end of the arm member 610 is pivotally supported by the sliding door 520 via a rotation shaft 623 on the sliding door 520 side (hereinafter referred to as the "door-side rotation shaft") whose axial direction is the vertical direction (FIGS. 1 to 4). A second arm holding member 624 is fixed to the sliding door 520, which holds the other end of the arm member 610 rotatably around the axis of the door-side rotation shaft 623.

[0014] The arm member 610 has a bottom wall 611 with the groove bottom facing the door-opening or door-closing direction of the sliding door 520, a pair of side walls 612, 612 extending downward from each vertical end of the bottom wall 611 in the same direction in the door-opening or door-closing direction of the sliding door 520, and a blocking wall 613 that closes the openings formed by the free ends of the pair of side walls 612, 612, leaving a first opening 610a on the vehicle body 510 side and a second opening 610b on the sliding door 520 side (FIGS. 1 to 4). Thus, the arm member 610 has a cylindrical portion 614 formed by the bottom wall 611, the pair of side walls 612, 612, and the blocking wall 613.

[0015] The arm member 610 shown here has a bottom wall 611 with the groove bottom facing the door opening direction (FIGS. 1 to 4). The arm member 610 shown here has the bottom wall 611, side wall 612, and closing wall 613 formed in a rectangular flat plate shape (FIGS. 1 to 4). Therefore, in this arm member 610, the tubular portion 614 has a square cylindrical shape, and the first opening 610a and the second opening 610b have a rectangular shape.

[0016] This vehicle is equipped with a power supply device for a sliding door that supplies power from a power source (such as a secondary battery) on the vehicle body 510 to electrical connection objects on the sliding door 520. The electrical connection objects are installed on the sliding door 520, such as electrical components and switches. For example, the electrical components of the sliding door 520 refer to a drive device for operating a power window, a speaker, etc. Furthermore, the switches of the sliding door 520 refer to switches for operating a power window, a power seat, etc. The power supply device for a sliding door includes a wire harness 1 that electrically connects the power source on the vehicle body 510 to the electrical connection objects on the sliding door 520.

[0017] The wire harness 1 includes a harness body 10 having one end electrically connected to a power source and the other end electrically connected to an object to be electrically connected (FIGS. 1 to 4). The harness body 10 may be a bundle of multiple electric wires, or multiple electric wires covered and protected by an exterior member such as a corrugated tube.

[0018] The harness main body 10 has a bridge portion 11 that is stretched along the arm member 610 between the vehicle body 510 and the sliding door 520, a vehicle body-side routing portion 12 that is routed at one end of the bridge portion 11 (hereinafter referred to as the "vehicle body-side end"), and a door-side routing portion 13 that is routed at the other end of the bridge portion 11 (hereinafter referred to as the "door-side end") (Figures 1 to 4).

[0019] The crossover portion 11 is passed through the inside of the tubular portion 614 of the arm member 610 and is stretched between the vehicle body 510 and the sliding door 520 ( FIGS. 1 to 4 ). The wire harness 1 includes a vehicle-body-side assembly structure 20 that assembles the crossover portion 11 to the vehicle body 510, and a door-side assembly structure 30 that assembles the crossover portion 11 to the sliding door 520 ( FIGS. 1 to 4 ). The crossover portion 11 passes through the inside of the tubular portion 614 and is drawn out from a first opening 610 a of the arm member 610 toward the vehicle-body-side assembly structure 20, and is also drawn out from a second opening 610 b of the arm member 610 toward the door-side assembly structure 30.

[0020] In this manner, the arm member 610 causes the transition portion 11, which passes through the cylindrical portion 614, to be pulled outward from the first opening 610a and the second opening 610b at both ends of the cylindrical portion 614. Therefore, it is desirable to set the position and length of the cylindrical portion 614 (i.e., the position and length of the blocking wall 613) so that the transition portion 11 can maintain a predetermined bending radius or greater throughout the entire trajectory of the arm member 610 during the door opening and closing operation. The predetermined bending radius is the minimum bending radius that can be achieved without applying an excessive load to the transition portion 11 (e.g., without applying excessive compressive stress or tensile stress). It is also desirable to form the end of the blocking wall 613 on the first opening 610a side and the end of the blocking wall 613 on the second opening 610b side into an arc shape, for example, so that they are curved outward, and to form both ends of the cylindrical portion 614 in the cylindrical axis direction into a trumpet shape. As a result, in this arm member 610, it is possible to prevent the transition portion 11 being pulled out from the first opening 610a or the second opening 610b from getting caught, and to prevent a decrease in the durability of the transition portion 11.

[0021] The vehicle body-side assembly structure 20 has a harness slide portion that slides the crossover portion 11, which is pulled out from the first opening 610a of the arm member 610, along its axial direction in the door opening / closing direction, and a harness holding portion that holds the vehicle body-side end of the crossover portion 11, which is pulled out from the harness slide portion in the door opening direction and folded back in a U-shape, to maintain that position. The harness slide portion and harness holding portion are fixed to the vehicle body 510. The crossover portion 11 has a U-shaped portion 11a that spans in a U-shape between the harness slide portion and the harness holding portion (FIGS. 1 to 4).

[0022] The harness slide portion is formed, for example, as a through hole through which the crossover portion 11 is inserted and held so as to be freely movably in the axial direction. The crossover portion 11 shown here is pulled out from the harness slide portion in the door opening direction and folded back in a U-shape toward the inside of the vehicle compartment. The harness holding portion holds the vehicle body side end of the crossover portion 11 at the end of the U-shape. For example, the harness holding portion is formed so that the crossover portion 11 is inserted into the through hole along its axial direction, and the valleys and crests of the inner circumferential surface of the through hole are fitted into the crests and valleys of the bellows portion of the corrugated tube at the vehicle body side end of the crossover portion 11, thereby holding the vehicle body side end in that position. The U-shaped crossover portion 11 is inserted into the through hole in the door closing direction.

[0023] The vehicle body-side assembly structure 20 shown here includes a first harness holding member 21 having a harness slide portion 21a and a harness holding portion 21b (FIGS. 1 to 4). The first harness holding member 21 is fixed to a vehicle body 510. The first harness holding member 21 shown here includes a flat base portion 21c fixed to the vehicle body 510, a main portion 21d that supports the harness slide portion 21a and the harness holding portion 21b, and a U-shaped wall portion 21e that surrounds the U-shaped portion 11a of the transition portion 11 (FIGS. 1 to 4). The main portion 21d and the wall portion 21e are provided on the upper surface of the base portion 21c.

[0024] The vehicle body-side assembly structure 20 may include a harness slide member having a harness slide portion and a first harness holding member having a harness holding portion. In this case, the harness slide member and the first harness holding member are fixed to the vehicle body 510.

[0025] The vehicle body side assembly structure 20 shown here is disposed on the door opening direction side of one end of the arm member 610 .

[0026] The door-side assembly structure 30 includes a second harness holding member 31 that holds the door-side end of the transition portion 11 and maintains that position (FIGS. 1 to 4). The second harness holding member 31 is fixed to the sliding door 520. The second harness holding member 31 shown here routes the door-side end of the transition portion 11, which has been pulled out from the second opening 610b of the arm member 610, vertically upward.

[0027] For example, the second harness holding member 31 shown here is formed in a cylindrical shape, and the door-side end of the transition portion 11 is pulled in through a through-hole on the outer circumferential surface and routed vertically upward along the interior of the cylinder (FIGS. 1 and 3). For example, the second harness holding member 31 is formed so that the transition portion 11 is inserted axially through the through-hole, and the peaks and valleys of the bellows portion of the corrugated tube at the door-side end of the transition portion 11 are fitted into the valleys and valleys of the inner circumferential surface of the through-hole, thereby holding the door-side end in place.

[0028] The door-side assembly structure 30 is fixed to the sliding door 520 and includes bearing members 32 that rotatably support the respective ends of the second harness holding member 31 in the axial direction (FIGS. 1 to 4). The second harness holding member 31 is fixed to the sliding door 520 via the bearing members 32. The second harness holding member 31 receives a force from the door-side end of the bridge portion 11 in conjunction with the opening and closing of the sliding door 520, and rotates around the axis of the axial shaft.

[0029] The door-side assembly structure 30 shown here is disposed on the door opening direction side of the other end of the arm member 610 .

[0030] For example, in this wire harness 1, if the harness slide portion 21a is not present, the path length of the crossing portion 11 connecting the harness holding portion 21b and the second harness holding member 31 via the shortest path is shortest when the door is in the fully open position, and the path length of the crossing portion 11 connecting the harness holding portion 21b and the second harness holding member 31 via the shortest path is longest when the door is in the fully closed position. In such a wire harness 1, the crossing portion 11 is set to the path length when the door is in the fully closed position. Therefore, in the crossing portion 11, excess length increases like slack as the sliding door 520 in the fully closed position moves in the door opening direction, and the excess length is maximized when the door is in the fully open position.

[0031] However, in this wire harness 1, the transition portion 11 is passed through the tubular portion 614 between one end and the other end of the arm member 610, so that deterioration in appearance due to exposure of the transition portion 11 is suppressed, and the appearance can be improved. Furthermore, in this wire harness 1, the transition portion 11 slides in the axial direction of the tube within the tubular portion 614 in conjunction with the opening and closing of the sliding door 520. In this wire harness 1, when slack occurs in the transition portion 11 due to excess length as the sliding door 520 is opened and closed, a force acts on the transition portion 11. However, since the transition portion 11 can be slid in the axial direction within the tubular portion 614 to release the force, deterioration in appearance due to exposure of the transition portion 11 is suppressed, and the appearance can be improved.

[0032] On the other hand, in this wire harness 1, by sliding the crossover portion 11 inside the tubular portion 614 in conjunction with the door opening and closing operation, when the sliding door 520 in the fully closed position moves in the door opening direction, there is a possibility that slack will occur due to excess length in the crossover portion 11 pulled out from the first opening 610a and the crossover portion 11 pulled out from the second opening 610b.

[0033] However, this wire harness 1 includes the harness slide portion 21a, and the crossover portion 11 connects the harness slide portion 21a and the harness holding portion 21b in a U-shape. Therefore, the crossover portion 11 pulled out from the first opening 610a slides in the door opening / closing direction by the harness slide portion 21a in conjunction with the opening and closing movement of the sliding door 520. The crossover portion 11 shown here slides within the cylindrical portion 614 in conjunction with the movement of the sliding door 520 in the door opening direction from the fully closed position, and also slides in the door opening direction by the harness slide portion 21a. Therefore, this wire harness 1 can control the increasing trajectory of slack in the crossover portion 11 due to excess length without applying excessive tension or compression force.

[0034] Furthermore, when the sliding door 520 in the fully open position moves in the door closing direction, the wire harness 1 slides the crossing portion 11 within the cylindrical portion 614, and also slides the crossing portion 11 drawn out from the first opening 610a in the door closing direction. Therefore, even at this time, the wire harness 1 can follow the change in slack due to the excess length of the crossing portion 11.

[0035] In this way, this wire harness 1 can absorb the excess length of the bridge portion 11 when the door is opened or closed, and the location where the excess length is absorbed can be controlled to the vehicle body 510 side where the harness slide portion 21a and the harness holding portion 21b are present, thereby improving the appearance.

[0036] As described above, the wire harness 1 of the present embodiment can improve its appearance.

[0037] 5 to 8, reference numeral 2 denotes a wire harness according to this modification. In this wire harness 2, the vehicle body side assembly structure 20 in the wire harness 1 according to the above-described embodiment is replaced with a vehicle body side assembly structure 120 described below.

[0038] The vehicle body side assembly structure 120 of this modified example includes a harness slide portion and a harness holding portion, similar to the vehicle body side assembly structure 20 of the embodiment.

[0039] Here, the first harness holding member 21 exemplified in the embodiment is replaced with a first harness holding member 121 described below ( FIGS. 5 to 8 ). The first harness holding member 121 of this modification has a harness slide portion 121a and a harness holding portion 121b formed in the same manner as the first harness holding member 21 of the embodiment ( FIGS. 5 to 8 ). The first harness holding member 121 of this modification also has a base portion 121c, a main portion 121d, and a wall portion 121e formed in the same manner as the first harness holding member 21 of the embodiment ( FIGS. 5 to 8 ).

[0040] The vehicle body-side assembly structure 120 of this modified example further includes an elastic member 122 that applies a tensile load in the door-opening direction as a preload to the U-shaped portion 11a of the transition portion 11 when the door is in the fully open position (FIGS. 5 to 8). As a result, the elastic member 122 applies a tensile load in the door-opening direction to the U-shaped portion 11a of the transition portion 11 when the door is in the fully closed position.

[0041] For example, the vehicle body side assembly structure 120 shown here includes an excess length absorbing member 123 that holds the U-shaped portion 11a of the transition portion 11 and slides in the door opening / closing direction along a guide portion on the vehicle body 510 to absorb excess length of the transition portion 11 (FIGS. 5 to 8). The elastic member 122 is preloaded with respect to the excess length absorbing member 123 that holds the U-shaped portion 11a when the door is in the fully open position.

[0042] The excess length absorbing member 123 has a U-shaped fitting groove 123a into which the U-shaped portion 11a of the transition portion 11 is fitted and slides in the axial direction (FIGS. 5 to 8). The excess length absorbing member 123 slides the U-shaped portion 11a in the axial direction within the fitting groove 123a in accordance with movement of the excess length absorbing member 123 in the door opening / closing direction along the guide portion.

[0043] The elastic member 122 has one end connected to the slack absorption member 123 and the other end connected to the wall portion 121e of the first harness holding member 121 ( FIGS. 5 to 8 ). The slack absorption member 123 is provided with a holding portion 123b that holds one end of the elastic member 122 ( FIGS. 5 to 8 ). The wall portion 121e of the first harness holding member 121 is provided with a holding portion 121f that holds the other end of the elastic member 122 ( FIGS. 6 and 8 ). Here, a helical spring is used as the elastic member 122. One end of the elastic member 122 is hooked and held by the holding portion 123b of the slack absorption member 123, and the other end is hooked and held by the holding portion 121f of the first harness holding member 121.

[0044] In the vehicle body side assembly structure 120, a guide portion 121g is provided on the base portion 121c of the first harness holding member 121, and the slack absorber 123 slides along the guide portion 121g in the door opening / closing direction (FIGS. 5 to 8). The guide portion 121g is a rectangular flat plate portion held in a state of being lifted above the upper surface of the base portion 121c, and has a pair of side portions 121g along the door opening / closing direction. １ , 121g １ For example, the excess length absorbing member 123 has a side portion 121g １ The guide rail portion that slides in the door opening / closing direction is the side portion 121g. １ The guide portion 121g positions the excess length absorbing member 123 closest to the door opening direction when the door is in the fully open position, and positions the excess length absorbing member 123 closest to the door closing direction when the door is in the fully closed position.

[0045] Furthermore, in this vehicle body-side assembly structure 120, a first locking wall 121h that locks the slack absorber 123 from the door-opening direction when the door is fully open and a second locking wall 121i that locks the slack absorber 123 from the door-closing direction when the door is fully closed are provided on the base portion 121c of the first harness holding member 121 (FIGS. 5 to 8). The first locking wall 121h and the second locking wall 121i are provided vertically from the upper surface of the base portion 121c. The guide portion 121g is held in a state where it is raised above the upper surface of the base portion 121c by connecting one of the remaining pair of sides to the first locking wall 121h and connecting the other of the pair of sides to the second locking wall 121i.

[0046] The elastic member 122 also applies a tensile load in the door opening direction to the slack absorbing member 123 at the fully closed door position and the U-shaped portion 11a of the transition portion 11. Therefore, in the wire harness 2 of this modified example, when the sliding door 520 at the fully closed door position moves in the door closing direction, the U-shaped portion 11a of the transition portion 11 pushes the slack absorbing member 123 in the door closing direction along the guide portion 121g, thereby stretching the elastic member 122 and increasing the tensile load. As a result, in the wire harness 2 of this modified example, when the sliding door 520 at the fully closed door position moves in the door opening direction, the elastic member 122 assists the movement of the slack absorbing member 123 and the U-shaped portion 11a of the transition portion 11 in the door opening direction. Therefore, in the wire harness 2 of this modification, even if the rigidity of the harness main body 10 changes with a change in the ambient temperature or even if the rigidity of the harness main body 10 increases with an increase in the number of circuits (i.e., an increase in the number of electric wires), the movement of the slack absorbing member 123 and the U-shaped portion 11a of the transition portion 11 in the door opening / closing direction can be stabilized, and stable slack absorption is thereby possible. Furthermore, in the wire harness 2 of this modification, the elastic member 122 applies tension to the U-shaped portion 11a of the transition portion 11 via the slack absorbing member 123, so that generation of abnormal noise due to vibration or the like can be suppressed.

[0047] REFERENCE SIGNS LIST 1, 2 Wire harness 10 Harness main body 11 Crossover portion 11a U-shaped portion 12 Vehicle body side wiring portion 13 Door side wiring portion 20, 120 Vehicle body side assembly structure 21a, 121a Harness slide portion 21b, 121b Harness holding portion 30 Door side assembly structure 31 Second harness holding member (harness holding member) 121g Guide portion 122 Elastic member 123 Excess length absorbing member 510 Vehicle body 520 Sliding door 610 Arm member 610a First opening 610b Second opening 611 Bottom wall 612 Side wall 613 Blocking wall 614 Cylinder portion 621 Vehicle body side rotating shaft 623 Door side rotating shaft

Claims

a harness main body including a crossover section that is traversed along an arm member, one end of which is journaled to the vehicle body via a vehicle body-side rotating shaft having an axial direction in the vertical direction and the other end of which is journaled to the sliding door via a door-side rotating shaft having an axial direction in the vertical direction; a vehicle body-side routing section that is routed at a tip of the vehicle body-side end of the crossover section; and a door-side routing section that is routed at a tip of the door-side end of the crossover section; a vehicle body side assembly structure that assembles the bridge portion to the vehicle body; a door-side assembly structure for assembling the bridge portion to the sliding door; Equipped with The arm member has a bottom wall with a groove bottom facing the door-opening direction or the door-closing direction of the sliding door, a pair of side walls extending downward from each vertical end of the bottom wall in the same direction in the door-opening and door-closing direction of the sliding door, and a blocking wall that blocks an opening formed by each free end of the pair of side walls, leaving a first opening on the vehicle body side and a second opening on the sliding door side, the bridge portion passes through a cylindrical portion formed by the bottom wall, the pair of side walls, and the closing wall, and is pulled out from the first opening toward the vehicle body-side assembly structure, and is pulled out from the second opening toward the door-side assembly structure, The vehicle body side assembly structure includes: a harness slide portion that is fixed to the vehicle body and slides the crossing portion pulled out from the first opening in the door opening / closing direction along the axial direction of the crossing portion; and a harness holding portion that is fixed to the vehicle body and holds the vehicle body side end portion that is pulled out from the harness slide portion in the door opening direction and folded back in a U-shape, and maintains it in that position. the door-side assembly structure includes a harness holding member fixed to the sliding door, which holds the door-side end of the transition portion and maintains it in position; The wire harness is characterized in that the crossover portion slides in the cylindrical direction within the cylindrical portion in conjunction with the door opening and closing operation of the sliding door, and also slides in the door opening and closing direction by the harness slide portion. 　 the vehicle body side assembly structure is disposed on the door opening direction side of the one end of the arm member, the door-side assembly structure is disposed on the door opening direction side of the other end of the arm member, The wire harness according to claim 1 , wherein the arm member has the bottom wall with the groove bottom facing the door opening direction.

3. The wire harness according to claim 2, wherein the transition portion slides within the cylindrical portion in conjunction with movement of the sliding door in the door closing direction when the sliding door is in the fully open position, and the harness slide portion slides in the door closing direction, while the transition portion slides within the cylindrical portion in conjunction with movement of the sliding door in the door opening direction when the sliding door is in the fully closed position, and the harness slide portion slides in the door opening direction. 　 the bridge portion has a U-shaped portion that spans between the harness slide portion and the harness holding portion, 4. The wire harness according to claim 3, wherein the vehicle body side assembly structure includes an elastic member that applies a tensile load in the door opening direction as a preload to the U-shaped portion when the door is in a fully open position. 　 the vehicle body side assembly structure includes an excess length absorption member that holds the U-shaped portion and slides along the vehicle body side guide portion in the door opening / closing direction to absorb excess length of the bridge portion, 5. The wire harness according to claim 4, wherein the elastic member applies the preload to the slack absorbing member that holds the U-shaped portion when the door is in a fully open position.

Images