wire harness

Abstract

A wire harness capable of improving followability of a rotational operation of a link mechanism is provided. The wire harness (WH) includes a first protector (1) disposed on a fixed first link (110), a second protector (2) disposed on a second link (120) capable of relative rotation with respect to the first link, a flexible cylindrical outer member (3), and electric wires (4) respectively inserted through the first protector, the second protector, and the outer member and routed on the second link, the second link supporting a base (120a) on the first link via a rotation axis in a manner capable of relative rotation with respect to the first link with the base as a center, the first protector has a first cylindrical portion (11) that is open toward the rotation axis side, a first end portion (31) of the outer member is fixed with respect to the first cylindrical portion, and the outer member is stretched and contracted in accordance with a change in a wire length between the first protector and the second protector due to relative rotation of the second link with respect to the first link.

Description

Technical Field

[0001] This invention relates to wire harnesses. Background Technology

[0002] Previously, there were technologies for absorbing excess wire harness length. Patent Document 1 discloses a wire harness excess length absorption structure. For a first connecting rod rotatably supported on a base by a shaft and a second connecting rod rotatably supported on the front end side of the first connecting rod by a shaft, a wire harness protector is offset from the center of each shaft on the first connecting rod, so that the wire harness can be slidably inserted into the wire harness protector. One side of the wire harness is fixed to a wire harness fixing part on the base side, and the other side of the wire harness is fixed to a wire harness fixing part on the second connecting rod side.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-213315 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] There is room for improvement in the ability of the wiring harness to follow the rotational movements of the linkage mechanism. For example, in a wiring harness with wires and external components, if the external components can independently follow the rotational movements, the degree of freedom in absorbing excess wire length will be increased.

[0008] The purpose of this invention is to provide a wire harness that can improve the tracking accuracy of the rotational movements of a linkage mechanism.

[0009] Technical means for solving problems

[0010] The wiring harness of the present invention is characterized by comprising: a first protector disposed on a fixed first link; a second protector disposed on a second link capable of rotating relative to the first link; a flexible cylindrical outer component having a first end fixed to the first protector and a second end fixed to the second protector; and wires respectively inserted into the first protector, the second protector, and the outer component, and disposed on the second link, the second link having a base at one end in the longitudinal direction, and the base being supported by the first link via a rotation axis, such that the second link can rotate relative to the first link about the base, the first protector having a first cylindrical portion opening toward the rotation axis, the first end of the outer component being fixed to the first cylindrical portion, and the outer component extending and retracting according to the change in wire length between the first protector and the second protector caused by the relative rotation of the second link relative to the first link.

[0011] Invention Effects

[0012] The wiring harness of the present invention comprises: a first protector disposed on a fixed first link; a second protector disposed on a second link capable of rotating relative to the first link; and a flexible cylindrical outer component having a first end fixed to the first protector and a second end fixed to the second protector. The outer component extends and retracts according to the change in wire length between the first and second protectors caused by the relative rotation of the second link relative to the first link. The wiring harness according to the present invention provides the effect of improving the tracking accuracy of the rotational movements of the linkage mechanism. Attached Figure Description

[0013] Figure 1 This is a perspective view of the wiring harness involved in the implementation method.

[0014] Figure 2 This is a top view showing the wire harness in a half-open position.

[0015] Figure 3 This is a top view showing the wire harness in the fully closed position.

[0016] Figure 4 This is a top view showing the wire harness in the fully open position.

[0017] Figure 5 This is an enlarged perspective view of the wiring harness involved in the implementation method.

[0018] Figure 6 This is a cross-sectional view of the wiring harness involved in the implementation method.

[0019] Figure 7 This is a cross-sectional view of the wiring harness involved in the implementation method.

[0020] Figure 8 This is a cross-sectional view of the wiring harness involved in the implementation method.

[0021] Figure 9 This is a diagram illustrating the accommodating space involved in the first variation of the implementation method.

[0022] Symbol Explanation

[0023] 1: First protector; 2: Second protector; 3: External components; 4: Wires

[0024] 11: First cylindrical section, 11a: First straight section, 11b: Second straight section

[0025] 11c: First opening; 11d: Second opening

[0026] 21: Second cylindrical section; 21a: Opening

[0027] 22: Third cylindrical section; 22a: Opening; 22b: Inner wall; 22c: Outer wall

[0028] 23: Curved section; 24: Accommodation space

[0029] 31: First end; 32: Second end

[0030] 41: Remaining length

[0031] 100: Vehicle; 100A: Linkage mechanism; 110: First link

[0032] 120: Second link, 120a: Base, 120b: Front end

[0033] 121: Internal space; 122: Bottom wall; 123: First side wall; 123a: Notch

[0034] 124: Second sidewall

[0035] 130: Third Link

[0036] 140: Rotating axis, 150: Door, 160: Body, 170: Rotating axis

[0037] WH: Wire harness

[0038] X: Vehicle forward / backward direction; Z: Vehicle up / down direction Detailed Implementation

[0039] Hereinafter, the wire harness according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, the present invention is not limited to these embodiments. Additionally, the structural elements of the following embodiments include elements readily conceived by those skilled in the art or substantially the same elements.

[0040] [Implementation Method]

[0041] Reference Figures 1 to 8 The implementation method will be described. This implementation method relates to wire harnesses. Figure 1 This is a perspective view showing the wiring harness involved in the implementation method. Figure 2 This is a top view showing the wire harness in a half-open position. Figure 3 This is a top view showing the wire harness in the fully closed position. Figure 4 This is a top view showing the wire harness in the fully open position. Figure 5 This is an enlarged perspective view of the wiring harness involved in the implementation method. Figures 6 to 8 This is a cross-sectional view of the wire harness involved in the implementation method.

[0042] exist Figure 6 The middle shows Figure 2 Section VI-VI. In Figure 7 The middle shows Figure 3 Section VII-VII. Figure 8 The middle shows Figure 4 Section VIII-VIII.

[0043] like Figure 1 As shown, the wiring harness WH of this embodiment includes a first protector 1, a second protector 2, an external component 3, and a wire 4. The wiring harness WH of this embodiment is applied, for example, to a linkage mechanism 100A of a vehicle 100. The example linkage mechanism 100A constitutes an opening and closing device for opening and closing a door 150 of the vehicle 100.

[0044] The linkage mechanism 100A includes a first link 110, a second link 120, a third link 130, and rotation shafts 140 and 170. The first link 110, second link 120, and third link 130 are formed, for example, from sheet metal. The first link 110 is a component fixed to the body 160 of the vehicle 100. The first link 110 is bent into a generally U-shaped form, opening towards the vehicle width direction Y.

[0045] The second link 120 is a component that rotates relative to the first link 110. The second link 120 is formed in a slot shape, having an internal space 121 for the power supply line 4. The second link 120 has a bottom wall 122, a first side wall 123, and a second side wall 124. The first side wall 123 and the second side wall 124 are erected from the edge of the bottom wall 122. The first side wall 123 and the second side wall 124 are opposite each other in the width direction of the bottom wall 122. The internal space 121 is formed by the bottom wall 122 and the two side walls 123 and 124. The illustrated second link 120 is configured such that the first side wall 123 faces upward in the vehicle's vertical direction Z and the second side wall 124 faces downward.

[0046] The second link 120 has a base 120a and a front end 120b. The base 120a is located at a first end in the longitudinal direction of the second link 120. The front end 120b is located at a second end in the longitudinal direction of the second link 120. The base 120a is rotatably supported by the first link 110 via a rotation shaft 140. More specifically, the base 120a is inserted into the interior of the first link 110. The rotation shaft 140 passes through a first sidewall 123 and a second sidewall 124 of the second link 120, rotatably supporting the second link 120. Both ends of the rotation shaft 140 are supported by the first link 110. The axial direction of the illustrated rotation shaft 140 is the vehicle vertical direction Z.

[0047] The second link 120 can rotate relative to the first link 110 about the rotation axis 140 as the center of rotation. For example... Figures 2 to 4 As shown, the second link 120 rotates in such a way that the front end 120b moves in the vehicle's longitudinal direction X. Figure 1 and Figure 2 Linkage mechanism 100A indicates the position of door 150 when it is in the half-open position. Figure 3 Linkage mechanism 100A indicates the fully closed position of door 150. Figure 4 The linkage mechanism 100A indicates the fully open position of the door 150.

[0048] The third link 130 is connected to the front end 120b of the second link 120. The third link 130 is rotatably supported by the second link 120 via a rotating shaft 170. The third link 130 is connected to the door 150.

[0049] The first protector 1 and the second protector 2 are components that protect the wire 4 and restrict the path of the wire 4. The first protector 1 and the second protector 2 are, for example, molded from insulating synthetic resin. Figure 5 As shown, the first protector 1 is disposed on the first link 110. The first protector 1 can be fixed relative to the first link 110 or relative to the vehicle body 160. In the example shown, the first protector 1 is disposed in contact with the first link 110.

[0050] The first protector 1 has a first cylindrical portion 11 formed in a cylindrical shape. The first cylindrical portion 11 accommodates and protects the wire 4 and restricts the path of the wire 4. Viewed from above, the first cylindrical portion 11 has a roughly V-shaped or roughly L-shaped form formed by bending in the middle. The first cylindrical portion 11 has a first straight portion 11a and a second straight portion 11b. The first straight portion 11a and the second straight portion 11b extend in a straight line. The first straight portion 11a and the second straight portion 11b are connected in an intersecting manner when viewed from above. The illustrated shape of the first straight portion 11a and the second straight portion 11b is a rectangular cylindrical shape.

[0051] The first straight section 11a has a first opening 11c that opens toward the rotation axis 140. In this embodiment, the first protector 1 is configured such that, when viewed from above, the rotation axis 140 is located on the extension line of the first straight section 11a. For example, the first protector 1 is configured such that the central axis of the first straight section 11a intersects the central axis of the rotation axis 140. The central axis of the first straight section 11a and the central axis of the rotation axis 140 may also be orthogonal to each other. The second straight section 11b has a second opening 11d. The illustrated second opening 11d opens toward the vehicle's longitudinal direction X.

[0052] The second protector 2 is disposed on the second link 120. A notch 123a is provided on the first sidewall 123 of the second link 120. The notch 123a is disposed at or near the base 120a. When viewed from above, the shape of the notch 123a is, for example, rectangular. The second protector 2 is disposed at and held by the notch 123a.

[0053] The second protector 2 has a second cylindrical portion 21, a third cylindrical portion 22, and a bent portion 23. The second cylindrical portion 21, the third cylindrical portion 22, and the bent portion 23 are each formed in a square cylindrical shape. The second cylindrical portion 21 extends along the length direction of the second connecting rod 120 and opens toward the rotation axis 140. That is, the second cylindrical portion 21 has an opening 21a toward the rotation axis 140. In this embodiment, the second protector 2 is fixed relative to the second connecting rod 120 such that, when viewed from above, the rotation axis 140 is located on the extension line of the second cylindrical portion 21. For example, the second protector 2 is arranged such that the central axis of the second cylindrical portion 21 intersects the central axis of the rotation axis 140. The central axis of the second cylindrical portion 21 and the central axis of the rotation axis 140 may also be orthogonal to each other.

[0054] The third cylindrical portion 22 extends in a direction orthogonal to the length direction of the second connecting rod 120 and engages with the notch 123a. The illustrated third cylindrical portion 22 extends along the vertical direction Z of the vehicle. The third cylindrical portion 22 has an opening 22a facing the interior space 121 of the second connecting rod 120. The opening 22a is opposite to the second sidewall 124.

[0055] The bent portion 23 is located between the second cylindrical portion 21 and the third cylindrical portion 22, connecting the second cylindrical portion 21 and the third cylindrical portion 22. The bent portion 23 shown in the example is bent at a right angle. That is, in the second protector 2 of this embodiment, the second cylindrical portion 21 and the third cylindrical portion 22 are orthogonal to each other.

[0056] The outer component 3 is a flexible, cylindrical component configured to extend and retract. The outer component 3 is, for example, molded from an insulating synthetic resin. The outer component 3 is, for example, a bellows. The illustrated outer component 3 has a cylindrical shape. Figure 6As shown, the external component 3 has a first end 31 and a second end 32. The first end 31 is fixed to the first cylindrical portion 11 of the first protector 1. Figure 6 As shown, the first cylindrical portion 11 has a protrusion 15 for holding the outer component 3. The protrusion 15 protrudes from the inner wall surface of the first straight portion 11a. The first end portion 31 of the outer component 3 is inserted into the first straight portion 11a and is locked by the protrusion 15. In the case that the outer component 3 is a bellows, the protrusion 15 engages with the annular recess of the outer component 3.

[0057] The second end 32 of the outer component 3 is fixed relative to the second cylindrical portion 21 of the second protector 2. For example... Figure 6 As shown, the second cylindrical portion 21 has a protrusion 25 for holding the outer component 3. The protrusion 25 protrudes from the inner wall surface of the second cylindrical portion 21. The second end portion 32 of the outer component 3 is inserted into the second cylindrical portion 21 and is locked by the protrusion 25. In the case that the outer component 3 is a bellows, the protrusion 25 engages with the annular recess of the outer component 3.

[0058] like Figure 1 , Figure 5 as well as Figure 6 As shown, wire 4 is inserted into the first protector 1, the second protector 2, and the external component 3. The illustrated wire 4 connects the equipment on the vehicle body 160 side to the equipment on the door 150 side. Wire 4 is, for example, a bundle of power and signal wires. One end of wire 4 extends from the second opening 11d of the first protector 1. Wire 4 extending from the second opening 11d connects to the power supply and control devices of the vehicle 100. The other end of wire 4 is disposed within the internal space 121 of the second link 120 and connects to the equipment located on the door 150.

[0059] like Figure 6 As shown, the wire 4 is arranged inside the first protector 1, inside the outer component 3, inside the second protector 2, and inside the space 121 of the second connecting rod 120. The wire 4 is bent inside the second protector 2. More specifically, the wire 4 is bent along the shape of the bend 23 inside the bend 23. Figure 6 The wire 4 shown is bent at an obtuse angle θ with respect to the central axis in the bend 23. The wire 4 is further bent at the opening 22a of the second protector 2. The wire 4 is led out from the interior space 121 at the front end 120b of the second link 120 and connected to the equipment on the side of the door 150.

[0060] The third cylindrical portion 22 of the second protector 2 has an inner wall 22b and an outer wall 22c. The inner wall 22b and the outer wall 22c are opposite each other in the longitudinal direction of the second connecting rod 120. That is, the inner wall 22b and the outer wall 22c are opposite each other in the radial direction when the second connecting rod 120 rotates. The inner wall 22b is located closer to the rotation axis 140 than the outer wall 22c. That is, compared with the outer wall 22c, the inner wall 22b is located on the center side in the aforementioned radial direction.

[0061] The distance W1 between the inner wall 22b and the outer wall 22c is larger than the diameter of the wire 4. Therefore, the wire 4 can extend inside the third cylinder 22 in a direction inclined relative to the vertical direction Z of the vehicle.

[0062] The second protector 2 is configured to accommodate the excess length of the wire 4 generated when the second link 120 rotates. For example... Figure 6 As shown, a gap G1 is provided between the outer peripheral surface of the wire 4 and the inner wall surface of the second protector 2. The gap G1 is formed at least between the inner wall surface of the third cylindrical portion 22 and the wire 4.

[0063] The wire 4 is fixed to the vehicle body 160 side and the second link 120 side, respectively. The object to which the wire 4 is fixed on the vehicle body 160 side is, for example, the first protector 1. The wire 4 is fixed to the first protector 1, for example, by a strap or other binding material or tape. The object to which the wire 4 is fixed on the second link 120 side is, for example, the second protector 2. The wire 4 is fixed to the second protector 2, for example, at the opening 22a. The wire 4 can also be fixed relative to the outer wall 22c.

[0064] Here, in the linkage mechanism 100A of this embodiment, the linear length between the first protector 1 and the second protector 2 changes due to the relative rotation of the second link 120 relative to the first link 110. Figure 2 In the rotational position shown, the first opening 11c of the first protector 1 and the opening 21a of the second protector 2 are opposite each other, and the shape of the outer component 3 is a straight line. In this case, the line length between the first protector 1 and the second protector 2 is the maximum.

[0065] In contrast, Figure 3 The fully closed rotational position shown and Figure 4 In the fully open rotational position shown, the orientation of the first opening 11c intersects with the orientation of the opening 21a. In this case, with Figure 2 Compared to the rotational position, the straight-line distance between the first opening 11c and the opening 21a is shorter. That is, the line length between the first opening 11c and the opening 21a in the fully closed position and the fully open position is shorter than... Figure 2 The length of the line when rotating to a certain position.

[0066] In the wiring harness WH of this embodiment, the outer component 3 extends and contracts according to changes in the wire length. The outer component 3 is configured to elastically deform and extend and contract axially. The outer component 3 can elongate so that its length L becomes greater than its free length L0. Furthermore, the outer component 3 can contract so that its length L becomes less than its free length L0. The outer component 3 flexes and contracts axially while simultaneously extending and contracting according to changes in the position of the second protector 2 caused by the rotation of the second link 120. Therefore, the outer component 3 can absorb changes in wire length and follow the rotation of the second link 120.

[0067] In this embodiment, the external component 3 is... Figure 3 The fully enclosed position shown is fixed such that the length of the outer component 3 becomes its free length L0. Here, the length L of the outer component 3 is typically the length of its central axis C1. In this case, in Figure 2 In the partially open position shown, the length L of the outer component 3 becomes longer than the free length L0. That is, when the second link 120 is facing... Figure 2 When rotating to the position shown, the outer component 3 follows the second protector 2 while making its length L greater than its free length L0. Figure 4 The length L of the external component 3 at the fully open position shown is, for example, the same as the free length L0.

[0068] Furthermore, the wiring harness WH in this embodiment has a receiving space that accommodates the excess length of the wire 4 generated as the second link 120 rotates. The receiving space of the illustrated wiring harness WH is the internal space of the second protector 2.

[0069] exist Figure 6 The image shows the second link 120 in position. Figure 2 The second protector 2 and the wire 4 are shown in the half-open position. The wire 4 extends obliquely inside the third cylinder 22. More specifically, the wire 4 is obliquely inclined relative to the vertical direction Z of the vehicle as it approaches the outer wall 22c from the second cylinder 21 toward the opening 22a. At this time, the wire 4 is obliquely inclined relative to the outer wall 22c. The gap between the wire 4 and the outer wall 22c increases as it approaches the second cylinder 21 along the vertical direction Z of the vehicle. At this time, the gap G1 is located between the outer wall 22c and the wire 4.

[0070] exist Figure 7 The diagram shows the second protector 2 and the wire 4 when the second link 120 is in the fully closed position. As described above, in the fully closed position, the wire length between the first protector 1 and the second protector 2 becomes shorter. Therefore, when the second link 120 rotates from the half-open position towards the fully closed position, as... Figure 7As indicated by the middle arrow AR1, wire 4 is pressed into the interior of the second protector 2. As a result, wire 4 gains excess length. In the following description, the portion of wire 4 that is pressed into the interior of the second protector 2 due to the movement of the second link 120 is referred to as excess length portion 41. The excess length resulting from the rotation of the second link 120 corresponds to the length of excess length portion 41.

[0071] The second protector 2 accommodates the excess length 41 of the wire 4. For example... Figure 7 As shown, the wire 4 is accommodated in the third cylindrical portion 22 such that it extends along the outer wall 22c. At this time, the wire 4 can extend parallel to the outer wall 22c within the third cylindrical portion 22. That is, when the second link 120 rotates toward the fully closed position, the wire 4 moves inside the second protector 2, causing the angle of the bent portion to change. The second protector 2 has a accommodating space capable of allowing such movement of the wire 4 and the change in the bending angle of the wire 4. Therefore, the second protector 2 can accommodate the remaining length 41 of the wire 4, allowing the wire 4 to follow the rotation of the second link 120.

[0072] exist Figure 8 The image shows the second protector 2 and the wire 4 when the second link 120 is in the fully open position. When the second link 120 rotates from the half-open position to the fully open position, as shown... Figure 8 As indicated by the middle arrow AR2, the wire 4 is pressed into the interior of the second protector 2. The excess length 41 produced at this time is accommodated by the second protector 2.

[0073] like Figure 7 and Figure 8 As shown, when the second link 120 is in the fully closed and fully open positions, the wire 4 is separated from the inner wall 22b. Therefore, when the second link 120 rotates toward the half-open position, the wire 4 can follow the rotation of the second link 120 while extending its remaining length 41 from the second cylinder 21.

[0074] Thus, in this embodiment, the wiring harness WH accommodates the excess length 41 of the wire 4 generated due to the rotation of the second link 120 within the second protector 2. Therefore, the wiring harness WH in this embodiment has appropriate following capability for the rotational movement of the linkage mechanism 100A. Furthermore, in this embodiment, the wiring harness WH allows the outer component 3 and the wire 4 to independently follow the rotation of the second link 120. The outer component 3 follows the rotation of the second link 120 through its extensibility. The wire 4 follows the rotation of the second link 120 while changing shape within the accommodating space.

[0075] In the wiring harness WH of this embodiment, the wire 4 is not fixed relative to the outer component 3, but is slidable relative to the outer component 3. Therefore, the wire 4 does not hinder the extension and retraction of the outer component 3, and the outer component 3 does not hinder the relative movement of the wire 4 relative to the outer component 3. That is, while the outer component 3 and the wire 4 have a high degree of independence, they can follow the rotational movement of the second link 120.

[0076] Alternatively, the space for accommodating the excess length of the wire 4 can also be provided in the wiring path on the side of the first link 110. For example, the internal space of the first protector 1 can also serve as the accommodating space to accommodate the excess length. The accommodating space can be provided in either the wiring path on the side of the first link 110 or the wiring path on the side of the second link 120, or it can be provided in both wiring paths.

[0077] As described above, the wiring harness WH of this embodiment includes a first protector 1, a second protector 2, and a wire 4. The first protector 1 is disposed on a fixed first link 110. The second protector 2 is disposed on a second link 120 that is rotatable relative to the first link 110. The outer component 3 is a flexible cylindrical component. The outer component 3 has a first end 31 fixed to the first protector 1 and a second end 32 fixed to the second protector 2. The wire 4 is inserted into the first protector 1, the second protector 2, and the outer component 3, and is routed on the second link 120.

[0078] The second link 120 has a base 120a located at one end in the longitudinal direction. The base 120a of the second link 120 is supported on the first link 110 via a rotation shaft 140 in such a way that it can rotate relative to the first link 110 with the base 120a as the center. The first protector 1 has a first cylindrical portion 11 that opens toward the rotation shaft 140. The first end portion 31 of the outer component 3 is fixed to the first cylindrical portion 11. The outer component 3 extends and retracts according to the change in line length between the first protector 1 and the second protector 2 caused by the relative rotation of the second link 120 relative to the first link 110. The wiring harness WH of this embodiment can follow the rotating second link 120 by extending and retracting the outer component 3. Therefore, the wiring harness WH of this embodiment can improve the tracking of the rotational movement of the linkage mechanism 100A.

[0079] The outer component 3 preferably slides and extends relative to the wire 4 inserted inside the outer component 3. With this structure, the following motion of the outer component 3 can be independent of the following motion of the wire 4.

[0080] The second protector 2 in this embodiment has a second cylindrical portion 21 that opens toward the rotation shaft 140. The second end portion 32 of the outer component 3 is fixed to the second cylindrical portion 21. By making the first cylindrical portion 11 of the first protector 1 and the second cylindrical portion 21 of the second protector 2 open toward the rotation shaft 140, the extension and retraction of the outer component 3 can be performed smoothly.

[0081] The wiring harness WH of this embodiment has a accommodating space for accommodating the excess length of the wire 4. The excess length of the wire 4 is due to the relative rotation of the second link 120 relative to the first link 110. The accommodating space is provided in at least one of the wiring paths on the first link 110 side and the wiring paths on the second link 120 side. By providing a accommodating space for accommodating the excess length of the wire 4, the following ability of the wire 4 to follow the rotation of the second link 120 is improved.

[0082] The second protector 2 in this embodiment has a second cylindrical portion 21, a third cylindrical portion 22, and a bent portion 23 that open toward the rotation shaft 140. The third cylindrical portion 22 opens toward the internal space 121 of the second connecting rod 120. The bent portion 23 is cylindrical and connects the second cylindrical portion 21 and the third cylindrical portion 22. The wire 4 is bent inside the bent portion 23. The internal space of the second protector 2 serves as a receiving space to accommodate the excess length of the wire 4. With this structure, the excess length of the wire 4 can be easily absorbed by the bent portion of the wire 4.

[0083] Furthermore, the shape and configuration of the first protector 1 and the second protector 2 are not limited to those exemplified in the embodiments. For example, the excess length absorbing structure of the embodiments can also be applied to the second link 120 and the third link 130. In this case, for example, the first protector 1 is configured on the third link 130, and the second protector 2 is configured on the front end 120b of the second link 120.

[0084] The linkage mechanism 100A of the wiring harness WH in the application implementation method is not limited to the mechanism for opening and closing the door 150. The linkage mechanism 100A is not limited to the mechanism mounted on the vehicle 100.

[0085] [First variation of the implementation method]

[0086] A first variation of the implementation method will be described. Figure 9This diagram illustrates the receiving space involved in the first variation of the embodiment. The manner in which the excess length of the wire 4 is received in the receiving space is not limited to the manner exemplified in the above embodiment. In the first variation of the embodiment, the receiving space 24 is a straight passage. The receiving space 24 is provided, for example, in the second protector 2. The wire 4 is pre-laid in a meandering shape in the receiving space 24, for example, as shown by the dashed line. When the wire 4 has excess length, the wire 4 is deformed in a manner that increases the degree of meandering, as shown by arrow AR3. Thus, the excess length portion 41 of the wire 4 is received in the receiving space 24.

[0087] The contents disclosed in the above embodiments and variations can be implemented in appropriate combinations.

Claims

1. A wire harness, characterized in that, have: The first protector is mounted on the fixed first link; A second protector is disposed on a second link that is rotatable relative to the first link; A flexible, cylindrical outer component having a first end fixed to the first protector and a second end fixed to the second protector; as well as The wires are respectively inserted into the first protector, the second protector, and the external component, and are also laid on the second connecting rod. The second link has a base at one end along its length, and the base is supported by the first link via a rotation axis, such that the second link can rotate relative to the first link about the base. The first protector has a first cylindrical portion that opens toward the side of the rotation axis. The first end of the external component is fixed to the first cylindrical portion. The external component extends and retracts according to the change in linear length between the first protector and the second protector caused by the relative rotation of the second link relative to the first link.

2. The wire harness according to claim 1, characterized in that, The second protector has a second cylindrical portion that opens toward the side of the rotating shaft. The second end of the external component is fixed to the second cylindrical portion.

3. The wire harness according to claim 1 or 2, characterized in that, The wire harness has a receiving space that accommodates the excess length of the wire resulting from the relative rotation of the second link relative to the first link. The accommodating space is provided in at least one of the wiring paths on the first link side and the wiring paths on the second link side.

4. The wire harness according to claim 3, characterized in that, The second protector has: a second cylindrical portion that opens toward the rotation axis; a third cylindrical portion that opens toward the interior space of the second connecting rod; and a cylindrical bend that connects the second cylindrical portion to the third cylindrical portion. The wire bends inside the bend. The internal space of the second protector serves as the accommodating space to accommodate the excess length.

Images