Link mechanism with wire harness, and wire harness

Abstract

A link mechanism (10) comprises: a vehicle body-side arm (20); a door-side arm (30); and a pair of coaxial rotary shafts (40) for rotatably connecting one end portion of the vehicle body-side arm (20) and one end portion of the door-side arm (30) to each other. A harness body (120) has a bridging portion (121) that is passed between pairs of main walls (22, 32) of each of the vehicle body-side arm (20) and the door-side arm (30) and between pairs of support walls (24, 34) of each of the vehicle body-side arm (20) and the door-side arm (30), thereby bridging between a vehicle body and a sliding door (510). Among the vehicle body-side arm (20) and the door-side arm (30), the one having the pair of support walls (24, 34) disposed on the bridging portion (121) side is configured such that the vertically upper wall surface of the vertically lower main wall (22, 32) is offset vertically above the vertically upper end portion of the vertically lower rotary shaft (40).

Description

Link mechanism with wire harness and wire harness

[0001] The present invention relates to a link mechanism with a wire harness and 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 a switch or electrical components on the sliding door side. In this power supply device for a sliding door, the wire harness is responsible for the electrical connection. This wire harness includes a harness body provided with a crossing portion that crosses between the vehicle body and the sliding door. In this wire harness, the crossing portion is routed along a plurality of arms of a link mechanism that also crosses between the vehicle body and the sliding door. This type of wire harness is disclosed in, for example, Patent Document 1 below.

[0003] Japanese Unexamined Patent Application Publication No. 2023-124959

[0004] By passing the crossing portion through the arm in the wire harness, the crossing portion can be protected from the surroundings and the appearance can be improved between the vehicle body and the sliding door. However, in this wire harness, interference between the crossing portion and the rotation axis between the plurality of arms appears as a concern when the crossing portion is passed through the arm.

[0005] Therefore, an object of the present invention is to provide a link mechanism with a wire harness and a wire harness that can suppress interference between the crossing portion and the rotation axis of the arm. [[ID=...]]

[0006] The wire harness link mechanism according to the present invention comprises a link mechanism for moving a sliding door back and forth in the sliding direction relative to the vehicle body, and a wire harness provided with a harness body for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, respectively provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, One of the rotating shafts rotatably connects the vertically upward support walls of the vehicle body side arm and the door side arm around a vertical axis, and the other rotating shaft rotatably connects the vertically downward support walls of the vehicle body side arm and the door side arm around a vertical axis, and the harness body has a connecting portion that is passed between the vehicle body and the sliding door through the space between the pair of main walls of the vehicle body side arm and the pair of support walls of the door side arm, and the vehicle body side arm and the door side arm, which have the pair of support walls arranged on the connecting portion side, are characterized in that the vertically upward wall surface of the vertically downward main wall is offset vertically upward from the vertically upward end of the other rotating shaft.

[0007] The wire harness according to the present invention is a wiring component that electrically connects a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, and comprises a harness body having a connecting portion that is passed between the vehicle body and the sliding door along a link mechanism that moves the sliding door back and forth in the sliding direction relative to the vehicle body, a vehicle body side harness support member that supports the vehicle body side end of the connecting portion, and a door side harness support member that supports the door side end of the connecting portion, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side and the sliding The system comprises a door-side arm installed on the door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle-side arm and the door-side arm. The vehicle-side arm and the door-side arm each have an arm body with a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end. One of the rotating shafts rotatably connects the respective support walls of the vehicle-side arm and the door-side arm, which are vertically above each other, around a vertical axis. The other rotation axis is formed by rotatably connecting the respective support walls vertically downward on the vehicle body side arm and the door side arm around a vertical axis, and the connecting section is stretched between the vehicle body and the sliding door through the gap between the pair of main walls and the pair of support walls on the vehicle body side arm and the door side arm, and the vehicle body side arm and the door side arm that have the pair of support walls located on the connecting section side have the vertically upward wall surface of the vertically downward main wall from the vertically upward end of the other rotation axis The harness support member is fixed inside the arm body of the arm on the body side and supports the end of the vehicle side of the connecting portion from vertically below, lifting it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft. The harness support member is fixed inside the arm body of the arm on the door side and supports the end of the door side of the connecting portion from vertically below, lifting it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft.

[0008] In the wire harness link mechanism and wire harness according to the present invention, a pair of support walls are positioned on the crossover side of either the vehicle body side arm or the door side arm. Even if the crossover sags under its own weight and approaches the other rotation axis (vertically downward rotation axis), the arm on the crossover side rests on the vertically upward wall surface of the vertically downward main wall. Therefore, in this wire harness link mechanism and wire harness, a gap can be created between the end of the other rotation axis (vertically downward rotation axis), thus avoiding interference with this end. Consequently, the wire harness link mechanism and wire harness according to the present invention can suppress interference between the crossover and the other rotation axis (vertically downward rotation axis) at any timing, whether the sliding door is fully closed, fully open, or during opening and closing.

[0009] Figure 1 is a perspective view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 2 is a side view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 3 is a magnified view of the area around the rotation axis of the link mechanism with wire harness and the wire harness in the fully closed position, viewed from the side. Figure 4 is a top view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 5 is a perspective view showing the link mechanism with wire harness and the wire harness in the fully open position. Figure 6 is a plan view of the link mechanism with wire harness and the wire harness in the fully open position, viewed from the front of the vehicle. Figure 7 is a plan view of the link mechanism with wire harness and the wire harness in the fully open position, viewed from the rear of the vehicle. Figure 8 is a top view showing the link mechanism with wire harness and the wire harness in the fully open position. Figure 9 is a perspective view showing the harness support member on the vehicle body side. Figure 10 is a perspective view showing the harness support member on the door side.

[0010] Embodiments of the link mechanism with wire harness and the wire harness according to the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to these embodiments.

[0011] [Embodiment] One embodiment of the link mechanism with wire harness and wire harness according to the present invention will be described based on Figures 1 to 10.

[0012] Reference numeral 1 in Figures 1 to 8 indicates the link mechanism with wire harness according to this embodiment.

[0013] For example, in vehicles such as automobiles, there are known vehicles equipped with a sliding door 510 that can slide relative to the vehicle body (reciprocating movement in the sliding direction) (Figure 1). In this vehicle, a link mechanism 10 is provided to move the sliding door 510 back and forth relative to the vehicle body in the sliding direction, and a wire harness 110 routed along this link mechanism 10 electrically connects the vehicle body side and the sliding door 510 side (Figures 1 to 8). The link mechanism with wire harness 1 is provided with the link mechanism 10 and the wire harness 110 assembled together.

[0014] The link mechanism 10 connects the vehicle body to, for example, the sliding door 510 on the side of the vehicle, and opens and closes the sliding door 510 between the fully closed position (Figures 1 to 4) and the fully open position (Figures 5 to 8) relative to the vehicle body.

[0015] This link mechanism 10 comprises a vehicle-side arm 20 installed on the vehicle body side, a door-side arm 30 installed on the sliding door 510 side, and a pair of coaxial rotating shafts 40 that rotatably connect one end each of the vehicle-side arm 20 and the door-side arm 30 (Figures 1 to 8). In this link mechanism 10, the vehicle-side arm 20, the door-side arm 30, and the rotating shafts 40 are made of metal materials such as steel or aluminum alloy.

[0016] The vehicle body side arm 20 and the door side arm 30 are each provided with arm bodies 21 and 31 (Figures 1 to 8).

[0017] Each arm body 21, 31 has a pair of main walls 22, 32 that are positioned opposite each other with a vertical gap between them (Figures 1 to 8). The main walls 22, 32 shown here each have a horizontal surface and are formed in the shape of a rectangular flat plate that extends between the vehicle body and the sliding door 510. Each arm body 21, 31 has a closing wall 23, 33 that connects the edges of the pair of main walls 22, 32 along the extending direction and closes the opening between those edges (Figure 1).

[0018] Furthermore, the vehicle body side arm 20 and the door side arm 30 are each provided with a pair of support walls 24, 34 that are positioned opposite each other with a vertical gap between them at one end (Figures 1 to 5, 7 and 8).

[0019] The vehicle-side arm 20 shown here is provided with a protruding piece that projects in a single-piece shape from one end of each of the pair of main walls 22 on the same plane. In the vehicle-side arm 20, each of these protruding pieces is used as a support wall 24 (Figures 1 to 5 and 8).

[0020] Furthermore, the door-side arm 30 shown here includes a support arm member 35 which is molded as a separate component from the arm body 31, and the arm body 31 and the support arm member 35 are joined together, for example by welding, to form a single component (Figures 1 to 8).

[0021] The support arm member 35 has a pair of main walls 36 that are positioned opposite each other with a gap in the vertical direction (Figures 1 to 8). These main walls 36 are formed in the shape of an L-shaped plate with a horizontal surface. The support arm member 35 also has a closing wall 37 that connects the edges of the L-shaped long pieces of the pair of main walls 36 along the extending direction and closes the opening between the edges (Figure 1).

[0022] In this support arm member 35, the arm body 31 is not placed between the L-shaped short pieces of each main wall 36, but rather the L-shaped long pieces of each main wall 36 are joined to the respective main walls 32 of the arm body 31. In this way, in this support arm member 35, each of the L-shaped short pieces is used as a support wall 24. Here, with the extending direction of the L-shaped long piece aligned with the extending direction of the main wall 32, the L-shaped long piece is overlapped and joined to the outer wall surface of the main wall 32.

[0023] In the link mechanism 10, the vertically upward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 are superimposed, and the vertically downward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 are superimposed. Here, the outer surface of each support wall 34 is superimposed (Figures 2 to 5, 7 and 8).

[0024] One rotating shaft 40 connects the vertically upward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 so that they can rotate around a vertical axis. The other rotating shaft 40 connects the vertically downward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 so that they can rotate around a vertical axis.

[0025] Each of the support walls 24 and 34 has a circular through-hole (not shown) that serves as a bearing for the rotating shaft 40. For example, a rivet member is used for the rotating shaft 40 here. The rotating shaft 40 has disc-shaped locking portions 41 with a diameter larger than the through-holes in the overlapping support walls 24 and 34, which are provided at both ends by riveting or the like (Figures 1 to 8). In this rotating shaft 40, one locking portion 41 is positioned facing the outer wall surface of the support wall 24 at one end in the axial direction, and the other locking portion 41 is positioned facing the inner wall surface of the support wall 34 at the other end in the axial direction, thereby connecting the overlapping support walls 24 and 34 so that they can rotate freely around a vertical axis.

[0026] The vehicle body side arm 20 and the door side arm 30 are positioned such that when the sliding door 510 is in the fully closed position, the extending direction of their respective pair of main walls 22 and 32 is aligned with the sliding direction of the sliding door 510 (Figures 1 to 4).

[0027] Here, the link mechanism 10 may include a vehicle-side arm 20 as the arm positioned closest to the vehicle body, or it may have another arm closer to the vehicle body than the vehicle-side arm 20. Also, the link mechanism 10 may include a door-side arm 30 as the arm positioned closest to the sliding door 510, or it may have another arm closer to the sliding door 510 than the door-side arm 30.

[0028] The vehicle body-side arm 20 shown here is positioned as close to the vehicle body as possible and fixed to the vehicle body. The link mechanism 10 shown here comprises, in order from the vehicle body side to the sliding door 510 side, the vehicle body-side arm 20 as the first arm, the door-side arm 30 as the second arm, and the third arm 50 (Figure 5). This link mechanism 10 also includes an arm support member 60 fixed to the sliding door 510 (Figure 5).

[0029] In this link mechanism 10, one end of the third arm 50 is rotatably connected to the arm support member 60 via a rotating shaft 71 (Figure 5). The rotating shaft 71 rotatably connects the arm support member 60 and one end of the third arm 50 around a vertical axis. In addition, in this link mechanism 10, the other ends of the door-side arm 30 and the third arm 50 are rotatably connected via a rotating shaft 72 (Figure 5). The rotating shaft 72 rotatably connects the other ends of the door-side arm 30 and the third arm 50 around a vertical axis.

[0030] The wire harness 110 is provided with a harness body 120, which serves as a wiring component for electrically connecting a first electrical connection target 550 installed on the vehicle body and a second electrical connection target 560 installed on the sliding door 510 (Figures 1 to 8). In this harness body 120, multiple electric wires (not shown) are bundled together.

[0031] The first electrical connection target 550 refers to items installed on the vehicle body side, such as a power source (secondary battery, etc.) and electrical components. For example, these vehicle body-side electrical components refer to audio equipment related to the speaker of the sliding door 510, or a drive unit that operates the power seat. On the other hand, the second electrical connection target 560 refers to items installed on the sliding door 510, such as electrical components and switches. For example, these electrical components of the sliding door 510 refer to a drive unit that operates the power window, or a speaker. Also, the switches of the sliding door 510 refer to switches for operating the power window, switches for operating the power seat, etc.

[0032] The harness body 120 has a connecting section 121 that runs along the link mechanism 10 between the vehicle body and the sliding door 510 (Figures 1 to 8). For example, the connecting section 121 is provided with an exterior member (not shown) such as a corrugated tube through which multiple electric wires pass inward or a resin tape wrapped around multiple electric wires.

[0033] Furthermore, in this harness body 120, one end of the connecting portion 121 on the vehicle body side (hereinafter referred to as the "vehicle body side end") has another end on the vehicle body side beyond it. And in this harness body 120, the other end of the connecting portion 121 on the sliding door 510 side (hereinafter referred to as the "door side end") has another end on the sliding door 510 side beyond it. Therefore, the harness body 120 has a vehicle body side routing portion 122 routed at the end of the vehicle body side end of the connecting portion 121, and a door side routing portion 123 routed at the end of the door side end of the connecting portion 121 (Figures 1, 2, 4 to 6 and 8).

[0034] The connecting section 121 is passed between the vehicle body and the sliding door 510, through the inside of the vehicle body side arm 20 and the door side arm 30 (Figures 1 to 6 and 8). The vehicle body side wiring section 122 is pulled outward from the other end of the vehicle body side arm 20 (Figures 1, 2, 4 to 6 and 8). The door side wiring section 123 is pulled outward from in front of the rotating shaft 72 at the other end of the door side arm 30 (Figures 1, 2, 4 to 6 and 8). A notch 32a is formed in the main wall 32 on the other end side of the arm body 31 in front of the rotating shaft 72 (Figures 1, 2, 4 to 6 and 8). The door side wiring section 123 is pulled outward from this notch 32a.

[0035] Specifically, the connecting section 121 is stretched between the vehicle body and the sliding door 510, passing between the pair of main walls 22, 32 and the pair of support walls 24, 34 of the vehicle body side arm 20 and the door side arm 30. Therefore, when the sliding door 510 is opened and closed between the fully closed position and the fully open position, the connecting section 121 passes between the pair of rotating shafts 40 at least one of the following timings: the fully closed position, the fully open position, or during opening and closing the door. Accordingly, the connecting section 121 is routed between the pair of support walls 24, 34 and between the pair of rotating shafts 40, at a distance from each of the rotating shafts 40.

[0036] However, the connecting portion 121 may sag under its own weight, and when passing between the pair of rotating shafts 40, it may get caught on the vertically upper end of the other rotating shaft 40 (that is, the vertically upper locking portion 41 (hereinafter referred to as "locking portion 41A") of the vertically lower rotating shaft 40 (hereinafter referred to as "rotating shaft 40A")) and interfere with it. Therefore, the wire harness link mechanism 1 is configured as follows to avoid interference between the connecting portion 121 and the rotating shaft 40A.

[0037] Here, one pair of support walls 24(34) of either the vehicle body side arm 20 or the door side arm 30 is positioned inward from the other pair of support walls 34(24), and is positioned on the connecting portion 121 side relative to the other pair of support walls 34(24) of the other arm (Figures 2, 3, and 7). Therefore, the vehicle body side arm 20 and the door side arm 30 that have the pair of support walls 24(34) positioned on the connecting portion 121 side offsets the vertically upward wall surface of the vertically downward main wall 22(32) vertically upward from the vertically upward end (locking portion 41A) of the rotation axis 40A (Figures 2 and 3). As a result, even if the connecting section 121 hangs down under its own weight and approaches the end of the rotating shaft 40A (locking section 41A), it rests on the vertically upward wall surface of the main wall 22 (32) vertically below it, creating a gap between it and the end of the rotating shaft 40A (locking section 41A), thus avoiding interference with this end.

[0038] In this example, a pair of support walls 34 of the door-side arm 30 are positioned on the crossover portion 121 side. As previously shown, the door-side arm 30 comprises a support arm member 35 that positions a pair of support walls 34 inside the vehicle body-side arm 20, and an arm body 31 that positions the ends of a pair of main walls 32 inside the support arm member 35. In the support arm member 35, a portion of the vertically downward main wall 36 (hereinafter referred to as "main wall 36A") becomes a vertically downward support wall 34 (hereinafter referred to as "support wall 34A"), and the vertically downward main wall 32 of the arm body 31 (hereinafter referred to as "main wall 32A") is joined to the vertically upward wall surface (inner wall surface) of the main wall 36A on the same plane as the vertically upward wall surface (inner wall surface) of the support wall 34A. In the door-side arm 30, the vertically upward wall surface (inner wall surface) 32b of the main wall 32A of the arm body 31 must be offset vertically upward from the locking portion 41A of the rotation axis 40A (Figures 2 and 3).

[0039] Therefore, in this case, the thickness of the locking portion 41A of the rotating shaft 40A is made thinner than the thickness of the main wall 32A, and the inner wall surface 32b of the main wall 32A is offset vertically upward from the locking portion 41A of the rotating shaft 40A (Figures 2 and 3).

[0040] Furthermore, the door-side arm 30 may be offset vertically upward from the locking portion 41A of the rotating shaft 40A by offsetting the inner wall surface of the support wall 34A vertically downward from the inner wall surface to which the main wall 32A of the arm body 31 is joined at the main wall 36A of the support arm member 35 (not shown). In this case, by making the plate thickness of the locking portion 41A of the rotating shaft 40A thinner than the plate thickness of the main wall 32A, the inner wall surface of the main wall 32A can be further offset vertically upward from the locking portion 41A of the rotating shaft 40A.

[0041] Furthermore, in this example, the door-side arm 30 is configured to include two arm members: an arm member forming the arm body 31 and a support arm member 35 provided with a pair of support walls 34. However, the door-side arm 30 may also be composed of a single arm member having both the arm body 31 and the pair of support walls 34 (not shown). In this case, the door-side arm 30 is configured to offset the inner wall surface of the main wall 32A of the arm body 31 vertically upward relative to the locking portion 41A by offsetting the inner wall surface of the support wall 34A vertically downward by a greater amount than the plate thickness of the locking portion 41A of the rotating shaft 40A. In this case, by making the plate thickness of the locking portion 41A of the rotating shaft 40A as thin as possible, the inner wall surface of the main wall 32A can be further offset vertically upward relative to the locking portion 41A of the rotating shaft 40A.

[0042] Thus, the wire harness-equipped link mechanism 1 and wire harness 110 of this embodiment can prevent interference between the connecting portion 121 and the rotating shaft 40A at any timing, whether the door is fully closed, fully open, or during door opening and closing (Figures 2, 3, and 7).

[0043] In this wire harness-equipped link mechanism 1 and wire harness 110, in addition to such offset arrangement, the interference suppression effect between the connecting portion 121 and the rotating shaft 40A can be further enhanced by restricting the vertical position of the connecting portion 121 inside the vehicle body side arm 20 and the door side arm 30.

[0044] Therefore, the wire harness 110 is fixed inside the arm main body 21 of the vehicle body side arm 20, and the vehicle body side harness support member 130 that lifts the vehicle body side end portion of the crossing portion 121 vertically upward to a position that avoids contact between the crossing portion 121 and the locking portion 41A of the rotating shaft 40A and supports it from vertically below, and the door side harness support member 140 that is fixed inside the arm main body 31 of the door side arm 30 and lifts the door side end portion of the crossing portion 121 vertically upward to a position that avoids contact between the crossing portion 121 and the locking portion 41A of the rotating shaft 40A and supports it from vertically below are provided (FIGS. 1, 2, and 4 to 10). The vehicle body side harness support member 130 and the door side harness support member 140 are formed of, for example, a synthetic resin material.

[0045] The vehicle body side harness support member 130 is fixed to the arm main body 21 of the vehicle body side arm 20 using a fixing member such as a screw member.

[0046] Specifically, the vehicle body side harness support member 130 is provided with a main body portion 131 that allows the harness main body 120 to pass through and lifts the vehicle body side end portion of the crossing portion 121 vertically upward to support it from vertically below (FIGS. 2, 3, and 9). In the main body portion 131, the crossing portion 121 whose vehicle body side end portion is supported is pulled out inward of the arm main body 21 toward one end portion of the vehicle body side arm 20. Also, in this main body portion 131, the vehicle body side cable laying portion 122 is pulled out inward of the arm main body 21 toward the other end portion of the vehicle body side arm 20.

[0047] For example, the bridging portion 121 includes, as an exterior member, a corrugated tube having a bellows portion in which annular recesses and annular protrusions are alternately arranged in the axial direction (not shown). The main body portion 131 shown here is provided with a fitting protrusion 131a that fits concentrically into the annular recess of the corrugated tube and a fitting recess 131b that fits concentrically the annular protrusion of the corrugated tube (FIG. 9). The fitting protrusion 131a is formed in a semi-arc shape that fits concentrically into the annular recess of the corrugated tube and supports the bellows portion from vertically below. Further, the fitting recess 131b is formed in a semi-arc shape that fits concentrically the annular protrusion of the corrugated tube and supports the bellows portion from vertically below. In the main body portion 131, the corrugated tube at the vehicle body side end of the bridging portion 121 is fitted into the fitting protrusion 131a and the fitting recess 131b to support the vehicle body side end thereof from below. The vehicle body side harness support member 130 can regulate the axial position of the bridging portion 121 inside the vehicle body side arm 20 by the fitting protrusion 131a and the fitting recess 131b.

[0048] After the bridging portion 121 is drawn out from the main body portion 131, it is passed inside the door side arm 30 through between the pair of support walls 24 and 34 in the vehicle body side arm 20 and the door side arm 30, respectively. The vehicle body side harness support member 130 is arranged closer to one end (that is, the pair of rotation shaft 40 sides) than the center between one end and the other end of the vehicle body side arm 20 so that the bridging portion 121 does not hang down by its own weight and contact the locking portion 41A of the rotation shaft 40A (FIGS. 2, FIG. 4, and FIG. 8). The vehicle body side harness support member 130 shown here is moved closer to one end of the vehicle body side arm 20 to a position where the bridging portion 121 drawn out from the main body portion 131 does not contact the locking portion 41A of the rotation shaft 40A even if it hangs down by its own weight. Therefore, after the vehicle body side cable portion 122 is drawn out from the main body portion 131, it passes inside the arm main body 21 and is drawn out outward from the other end of the vehicle body side arm 20.

[0049] Furthermore, the vehicle-side harness support member 130 is provided with protrusions 132 that project vertically upward and vertically downward from the main body portion 131 (Figures 2, 3, and 9). The vertically upward protrusion 132 extends until it contacts the main wall 22 vertically upward of the vehicle-side arm 20. The vertically downward protrusion 132 extends until it contacts the main wall 22 vertically downward of the vehicle-side arm 20. Thus, the vehicle-side harness support member 130 is held in place by its pair of main walls 22. Consequently, in the vehicle-side harness support member 130, the support position of the vehicle-side end of the connecting portion 121 on the main body portion 131 can be adjusted vertically by adjusting the amount of protrusion of each protrusion 132.

[0050] Furthermore, the door-side harness support member 140 is fixed to the arm body 31 of the door-side arm 30 using, for example, a fixing member such as a screw.

[0051] The door-side harness support member 140 is provided with a main body portion 141 through which the harness body 120 is inserted, and which supports the door-side end of the connecting portion 121 by lifting it vertically upward and from vertically below (Figures 2 and 10). The main body portion 141 causes the connecting portion 121, whose door-side end is supported, to be pulled out from inside the arm body 31 toward one end of the door-side arm 30. In addition, the main body portion 141 causes the door-side cable routing portion 123 to be pulled out from inside the arm body 31 toward the other end of the door-side arm 30.

[0052] For example, if the connecting section 121 is equipped with a corrugated tube as an exterior member, the main body 141 shown here is provided with a fitting projection 141a that fits concentrically into the annular recess of the corrugated tube, and a fitting recess 141b that fits concentrically into the annular projection of the corrugated tube (Figure 10). The fitting projection 141a is formed in a semi-circular shape that fits concentrically into the annular recess of the corrugated tube to support the bellows section from vertically below. The fitting recess 141b is also formed in a semi-circular shape that fits concentrically into the annular projection of the corrugated tube to support the bellows section from vertically below. In the main body 141, the corrugated tube at the door-side end of the connecting section 121 is fitted into the fitting projection 141a and the fitting recess 141b to support the door-side end. The door-side harness support member 140 can restrict the axial position of the connecting portion 121 inside the door-side arm 30 through the fitting projection 141a and fitting recess 141b.

[0053] The door-side harness support member 140 shown here is positioned inside the door-side arm 30, closer to the other end (i.e., the side of the rotation axis 72) (Figures 1, 2, 4 to 6, and 8). Here, the door-side harness support member 140 is positioned in front of the notch 32a (i.e., one end of the door-side arm 30 closer to the notch 32a). Therefore, after the door-side wiring section 123 is pulled out from the main body 141, it is pulled out from the notch 32a to the outside of the door-side arm 30.

[0054] Here, the connecting portion 121, which has been routed from the vehicle body side arm 20, passes between the pair of support walls 24 and 34, and then enters the inside of the door side arm 30 and into the inside of the main body 141 of the door side harness support member 140. Therefore, the door side harness support member 140 may be positioned closer to one end (i.e., the side of the pair of rotating shafts 40) than the center between one end and the other end of the door side arm 30 so that the connecting portion 121 does not hang down under its own weight and come into contact with the locking portion 41A of the rotating shaft 40A (not shown). In this case, the door side harness support member 140 is positioned closer to one end of the door side arm 30 to a location where, even if the connecting portion 121 drawn out from the main body 141 hangs down under its own weight, the connecting portion 121 will not come into contact with the locking portion 41A of the rotating shaft 40A.

[0055] As described above, the wire harness link mechanism 1 and wire harness 110 of this embodiment offset the inner wall surface (vertically upward wall surface) of the main wall 32A vertically upward from the locking portion 41A of the rotating shaft 40A, and the vehicle body side harness support member 130 and the door side harness support member 140 lift and support the connecting portion 121 vertically upward. Therefore, this wire harness link mechanism 1 and wire harness 110 can further enhance the interference suppression effect between the connecting portion 121 and the rotating shaft 40A at any timing, whether the door is fully closed, fully open, or during door opening and closing.

[0056] Incidentally, in this wire harness link mechanism 1 and wire harness 110, the fitting projection 131a and fitting recess 131b of the vehicle body side harness support member 130 restrict the axial position of the connecting portion 121 inside the vehicle body side arm 20, and the fitting projection 141a and fitting recess 141b of the door side harness support member 140 restrict the axial position of the connecting portion 121 inside the door side arm 30. In other words, in this wire harness link mechanism 1 and wire harness 110, the length between the vehicle body side end and the door side end of the connecting portion 121 can be adjusted by adjusting the support positions of the vehicle body side end and the door side end of the connecting portion 121. Therefore, this wire harness link mechanism 1 and wire harness 110 can also suppress interference between the connecting portion 121 and the rotating shaft 40A by adjusting the amount of sagging due to the weight of the connecting portion 121.

[0057] Furthermore, in this embodiment, if interference between the connecting portion 121 and the rotating shaft 40A can be suppressed solely by restricting the vertical position of the connecting portion 121 with the vehicle body-side harness support member 130 and the door-side harness support member 140, then it is not necessary to use an offset arrangement of the inner wall surface of the main wall 32A and the locking portion 41A of the rotating shaft 40A.

[0058] 1 Link mechanism with wire harness 10 Link mechanism 20 Body side arm 21 Arm body 22 Main wall 24 Support wall 30 Door side arm 31 Arm body 32, 32A Main wall 32b Wall surface 34, 34A Support wall 40, 40A Rotating shaft 41, 41A Locking part (end) 110 Wire harness 120 Harness body 121 Crossover part 130 Body side harness support member 140 Door side harness support member 510 Sliding door 550 First electrical connection target 560 Second electrical connection target

Claims

1. A link mechanism for moving a sliding door back and forth in the sliding direction relative to the vehicle body, and a wire harness provided with a harness body for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, wherein the vehicle body side arm and the door side arm are each provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, wherein one of the rotating shafts rotatably connects the respective vertically upper support walls of the vehicle body side arm and the door side arm around a vertical axis. The other rotation axis rotatably connects the respective support walls vertically downward on the vehicle body side arm and the door side arm around a vertical axis, the harness body has a connecting portion that is passed between the vehicle body and the sliding door through the pair of main walls on the vehicle body side arm and the pair of support walls on the door side arm, and the link mechanism with a wire harness is characterized in that the vehicle body side arm and the door side arm having a pair of support walls arranged on the connecting portion side have the vertically upward wall surface of the vertically downward main wall offset vertically upward from the vertically upward end of the other rotation axis.

2. The wire harness link mechanism according to claim 1, further comprising: a vehicle-side harness support member fixed inside the arm body of the vehicle-side arm, and supporting the vehicle-side end of the connecting portion from vertically below by lifting it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft; and a door-side harness support member fixed inside the arm body of the door-side arm, and supporting the door-side end of the connecting portion from vertically below by lifting it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft.

3. The link mechanism with a wire harness according to claim 2, wherein the vehicle body side harness support member is positioned between the one end and the other end of the vehicle body side arm, and is closer to the one end than to its center.

4. The link mechanism with a wire harness according to claim 1, 2, or 3, wherein the vehicle body side arm is fixed to the vehicle body.

5. A wiring component for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, comprising: a harness body having a connecting portion that is passed between the vehicle body and the sliding door along a link mechanism that moves the sliding door back and forth in the sliding direction relative to the vehicle body; a vehicle body side harness support member that supports the vehicle body side end of the connecting portion; and a door side harness support member that supports the door side end of the connecting portion, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, wherein the vehicle body side arm and the door side arm are each provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, One of the rotational shafts is configured to rotatably connect the respective vertically upward support walls of the vehicle body side arm and the door side arm around a vertical axis, the other rotational shaft is configured to rotatably connect the respective vertically downward support walls of the vehicle body side arm and the door side arm around a vertical axis, the connecting section is provided between the vehicle body and the sliding door through the pair of main walls and the pair of support walls of the vehicle body side arm and the door side arm, and the vehicle body side arm and the door side arm that have a pair of support walls arranged on the connecting section side have the vertically upward wall surface of the vertically downward main wall offset vertically upward from the vertically upward end of the other rotational shaft, A wire harness characterized in that the vehicle body side harness support member is fixed inside the arm body of the vehicle body side arm and supports the vehicle body side end of the connecting portion from vertically below, raising it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft, and the door side harness support member is fixed inside the arm body of the door side arm and supports the door side end of the connecting portion from vertically below, raising it vertically upward to a position that avoids contact between the connecting portion and the end of the other rotating shaft.

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