JP2020120549A - Wiring harness routing device - Google Patents

Abstract

To suppress size increase of a housing part for a wiring harness.SOLUTION: A wiring harness routing device includes: a rail 20; a wiring harness 11 whose one end is fixed to a slider 30, which is slidable with respect to the rail 20, and the other end is drawn outside from the rail 20; an extra length housing part 70 which can house the wiring harness 11 in a straight line shape; a first curve restriction part 76 which bends the wiring harness 11, introduced into the extra length housing part 70, toward the front end part 70F side; a second curve restriction fixed pulley 80 to bend the wiring harness 11 toward the rear end part 70B side; and a third curve restriction movable pulley 90 which bends the wiring harness 11 toward the front end part side. The first curve restriction part 76 and the third curve restriction movable pulley 90 can be connected and disconnected to the second curve restriction fixed pulley 80, and are energized toward a direction apart from the second curve restriction fixed pulley 80 by a constant load spring P.SELECTED DRAWING: Figure 6

Description

The technique disclosed by the present specification relates to a wire harness routing device.

Conventionally, as a wire harness wiring device for electrically connecting a vehicle and a slide component such as a slide seat mounted on the vehicle, those described in JP2012-045994A (Patent Document 1 below). It has been known. This wire harness installation device includes a rail, a slider slidably attached to the rail, a wire harness arranged in the rail and having one end connected to the slider, and a wire harness drawn from the rail. And a wire harness accommodating portion for accommodating.

The other end of the wire harness is led out from one end of the rail. The wire harness accommodating portion is attached to one end of the rail and is arranged along the longitudinal direction of the rail. The wire harness accommodating portion bends and accommodates the wire harness led out from one end of the rail in a U shape.

JP 2012-045994 A

By the way, according to the above configuration, when the sliding amount of the slider increases, the size of the wire harness accommodating portion increases and the size of the wire harness routing device also increases.

This specification discloses a technique for suppressing an increase in the size of the wire harness accommodating portion.

A technique disclosed by the present specification includes a rail, a wire harness having one end fixed to a slider slidably arranged on the rail, and the other end pulled out from the rail to the outside, and the rail. An extra length accommodating portion capable of linearly accommodating the wire harness between one end into which the wire harness pulled out from the other end is introduced and the other end opposite to the one end, A first curving restricting portion that is arranged closer to the other end than the one end in the long accommodating portion, and bends the wire harness introduced into the extra length accommodating portion toward the one end, and the extra length A second bending restricting portion that is disposed on the one end side in the accommodating portion and that bends the wire harness extending from the first bending restricting portion toward the other end side, and the one end rather than the first bending restricting portion. A third bend restricting portion that is provided integrally with the first bend restricting portion on the part side and that bends the wire harness extending from the second bend restricting portion toward the one end portion side. The restricting portion and the third curving restricting portion are configured to be capable of coming into contact with and separating from the second curving restricting portion, and being biased by a biasing member in a direction away from the second curving restricting portion. ..

According to such a configuration, the wire harness accommodated in the extra length accommodation portion is folded into three or more by the three bending regulation portions, and the wire harness is wound around the three bending regulation portions. It is possible to make the length dimension 1/3 or less of that when the length is linearly extended.

Then, when the slider moves on the rail and the wire harness pulled out from the rail side is introduced into the extra length accommodation portion, the first bending restricting portion and the third bending restricting portion cause the second bending by the urging force of the urging member. Move away from the control section. Therefore, the length of the wire harness between the first bending restriction portion and the third bending restriction portion and the second bending restriction portion is increased.
Further, when the slider moves on the rail and the wire harness is pulled out from the extra length accommodation portion to the rail side, the first bending restriction portion and the third bending restriction portion resist the second bending restriction against the urging force of the urging member. Move to approach the club. Therefore, the length of the wire harness between the first bending restriction portion and the third bending restriction portion and the second bending restriction portion is shortened.

That is, when the wire harness is taken in and out of the extra length accommodation portion as the slider moves, the first bending restriction portion and the third bending restriction portion come into contact with and separate from the second bending restriction portion, and the first bending restriction portion is moved. The length dimension of the wire harness between the portion and the third bending restriction portion and the second bending restriction portion changes. As a result, the extra length portion of the wire harness can be accommodated in the extra length accommodation portion.

That is, the extra length accommodating portion can be downsized as compared with the conventional case where the wire harness is accommodated in two in the extra length accommodating portion, and the wire harness routing device is prevented from increasing in size. be able to.

The wire harness routing device disclosed by the present specification may have the following configuration.
The wire harness may be curved so as to be internally wound in the first bending restriction portion and the second bending restriction portion.
According to such a configuration, it is possible to prevent the extra length accommodation portion from increasing in size, as compared with, for example, a case where the wire harness is curved outwardly or in a bellows shape.

The biasing member may be configured as a winding type constant load spring that biases the first bending restriction portion and the third bending restriction portion with a constant force.

For example, when urging the first bending restriction portion and the third bending restriction portion by the coil spring, the urging force of the coil spring changes depending on the positions of the first bending restriction portion and the third bending restriction portion. When the biasing force of the coil spring changes, there is concern that the slider may not slide smoothly.
However, according to such a configuration, since the biasing force that biases the first bending restriction portion and the third bending restriction portion by the constant load spring is constant, the slider can be slid smoothly.

The wire harness may be formed by flatly arranging and fixing a plurality of electric wires in which a core wire is covered with an insulating coating on a sheet-shaped base substrate.
With such a configuration, the wire harness is flat, and therefore, when the wire harness is folded and wound around the first bending restriction portion and the second bending restriction portion, it is possible to prevent the wiring harness from becoming bulky. it can. Thereby, the housing portion of the wire harness can be downsized.

The base material of the wire harness may be made of a synthetic resin having a smooth outer surface.
According to this structure, the outer surface of the base material is smooth and the friction is small. That is, when the wire harnesses are overlapped with each other, the wire harnesses are slippery with each other, and the wire harnesses are smoothly moved. Therefore, the movement of the wire harness installation device can be improved.

The first bending restriction portion, the second bending restriction portion, and the third bending restriction portion are made of synthetic resin, and the first bending restriction portion and the third bending restriction portion are on the other end side. May have a rounded curved surface, and the second bending restriction portion may have a rounded curved surface at the end portion on the one end side.

With such a configuration, the wire harness can be smoothly curved on the curved surface of each bending restriction portion, and the friction between the wire harness and the curved surface can be reduced. Thus, when the first bending restriction portion and the third bending restriction portion come into contact with and separate from the second bending restriction portion, the wire harness slides smoothly on the respective bending restriction portions, and the slider slides smoothly. You can

The radius of curvature of the curved surface of the third bending restriction portion may be set to be smaller than the radius of curvature of the curved surface of the first bending restriction portion.
With such a configuration, the wire harness curved by the curved surface of the third bending restriction portion is curved to have a smaller diameter than the wire harness curved by the curved surface of the first bending restriction portion. That is, it is possible to prevent contact between the wire harness extending from the introduction portion to the first bending restriction portion and the wire harness extending from the second bending restriction portion to the third bending restriction portion. Further, it is possible to prevent contact between the wire harness extending from the first bending restriction portion to the second bending restriction portion and the wire harness curved in the third bending restriction portion toward the second bending restriction portion side. Thereby, the wire harnesses can be prevented from sliding with each other, and the slider can be slid smoothly.

The second bending restricting portion and the third bending restricting portion may be formed by a pulley having a shaft portion made of synthetic resin that is rotatable in a bending direction of the wire harness.
With such a configuration, the second bending restricting portion and the third bending restricting portion are formed by the pulleys, so that the wire harness can be moved smoothly. This allows the slider to slide smoothly.

The first bending restricting portion is a curved surface made of synthetic resin having a rounded end on the other end side, and the radius of curvature of the shaft portion of the third bending restricting portion is equal to the first radius. It may be configured to be set smaller than the radius of curvature of the curved surface of the bending restriction portion.

According to such a configuration, the wire harness curved by the curved surface of the third bending restriction portion is curved to a smaller diameter than the wire harness curved by the curved surface of the first bending restriction portion. That is, it is possible to prevent contact between the wire harness extending from the introduction portion to the first bending restriction portion and the wire harness extending from the second bending restriction portion to the third bending restriction portion. Further, it is possible to prevent contact between the wire harness extending from the first bending restriction portion to the second bending restriction portion and the wire harness curved in the third bending restriction portion toward the second bending restriction portion side. Thereby, the wire harnesses can be prevented from sliding with each other, and the slider can be slid smoothly.

Further, the technology disclosed by the present specification, a rail, and a wire harness in which one end is fixed to a slider slidably arranged with respect to the rail, and the other end is pulled out from the rail to the outside. An extra length accommodating portion capable of linearly accommodating the wire harness between one end portion into which the wire harness pulled out from the rail is introduced and the other end portion opposite to the one end portion; The other-end bending restricting portion that is disposed closer to the other end than the one end in the extra length accommodation portion and bends the wire harness introduced into the extra length accommodation portion toward the one end portion side; One end curving restricting portion that is arranged on one end side in the long accommodating portion and that curves the wire harness extending from the other end curving restricting portion toward the other end side, wherein the wire harness is the other end. It is arranged so as to be wound a plurality of times over the bending restriction portion and the one-end bending restriction portion, and the other-end bending restriction portion is capable of coming into contact with and separating from the one-end bending restriction portion and an urging member. Is configured to be urged in a direction away from the one-end bending restriction portion.

With such a configuration, when the number of windings around the other-end bending restricting portion and the one-end bending restricting portion is N, the length dimension of the wire harness can be shortened to about 1/(2×N).
Then, when the slider moves along the rail and the wire harness pulled out from the rail is introduced into the extra length accommodation portion, the other end curving regulation portion is separated from the one curving regulation portion by the urging force of the urging member. It moves to the other end side of the accommodation section. Then, the length of the wire harness between the other end curving restricting portion and the one end curving restricting portion becomes long. Further, when the slider moves along the rail and the wire harness is pulled into the rail, the other-end bending restricting portion moves toward the one-end bending restricting portion against the biasing force of the biasing member. Then, the length of the wire harness between the other-end bending restricting portion and the one-end bending restricting portion is shortened.

That is, when the wire harness is taken in and out of the extra length accommodation portion with the movement of the slider, the other end bending restriction portion comes into contact with and separates from the one end bending restriction portion and the other end bending restriction portion and the one end bending restriction portion. The length dimension of the wire harness between is changed. As a result, the extra length portion of the wire harness can be accommodated in the extra length accommodation portion. Therefore, as compared with the conventional case where the wire harness is folded and stored in the extra length accommodation portion, the extra length accommodation portion can be downsized, and the wire harness routing device is prevented from increasing in size. be able to.

The wire harness may be formed by flatly arranging and fixing a plurality of electric wires in which a core wire is covered with an insulating coating on a sheet-shaped base substrate.
According to this structure, since the wire harness is flat, it is possible to prevent the wire harness from becoming bulky when the wire harness is wound around the first bending restriction portion and the second bending restriction portion. ..

The base material of the wire harness may be made of a synthetic resin having a smooth outer surface.
According to this structure, the outer surface of the base material is smooth and the friction is small. Therefore, when the wire harnesses are overlapped with each other, the wire harnesses are easily slipped, and the wire harnesses are smoothly moved to move the wire harness. The movement of the routing device can be improved.

According to the technique disclosed in the present specification, it is possible to prevent the accommodation portion of the wire harness from increasing in size.

1 is a perspective view showing a state in which the wire harness routing device according to the first embodiment is attached to a seat. Side view showing a state in which the wire harness routing device is attached to the seat Enlarged perspective view of main parts of the wire harness routing device in which the slider is arranged at the front position. Enlarged plan view of the main parts of the wire harness routing device with the slider placed in the front position Enlarged side view of the main parts of the wire harness routing device with the slider located in the front position BB line sectional view of FIG. An enlarged view of the main part taken along the line AA in FIG. Sectional drawing which corresponds to the section of FIG. 6 of the wire harness installation device in which the slider is arranged at the rear position. Sectional drawing which corresponds to the section of FIG. 7 of the wire harness wiring device in which the slider is arranged at the rear position. CC sectional view taken on the line of FIG. Perspective view of constant force spring FIG. 3 is an enlarged perspective view of a main part of the wire harness routing device according to the second embodiment, showing a state in which a lid of a harness housing part is removed. Sectional drawing corresponding to the section of FIG. 6 of a wire harness installation device. Sectional drawing corresponded to the cross section of FIG. 6 of the wire harness installation apparatus concerning Embodiment 3.

<Embodiment 1>
A first embodiment of the technology disclosed in this specification will be described with reference to FIGS. 1 to 11.
The present embodiment exemplifies a wire harness arranging device 10 for arranging a wire harness 11 between a floor (not shown) of a vehicle and a seat S, as shown in FIG. 1 or 2.

The seat S is slidable in the front-rear direction with respect to a pair of rails 20 fixed to the floor of the vehicle compartment by bolt fastening or the like.

The seat S is provided with various electric components such as an electric reclining device, a seat heater, a sensor for detecting whether or not a passenger is seated, and a socket for supplying power.
As shown in FIGS. 3 to 8, the wire harness wiring device 10 accommodates a rail 20, a slider 30 slidably arranged in the rail 20, a wire harness 11, and a part of the wire harness 11. The harness accommodating portion 50 is provided.

The rails 20 are made of metal, and a pair of the rails 20 are provided on the floor with respect to the seat S. As shown in FIG. 1, the pair of rails 20 are arranged side by side in parallel with an interval left and right. As the metal forming the rail 20, any metal such as stainless steel, aluminum, and aluminum alloy can be appropriately selected as needed. Each rail 20 is formed to linearly extend in the front-rear direction, and as shown in FIG. 10, a flat plate-shaped bottom plate 22 extending in the front-rear direction and extending upward from both lateral edges of the bottom plate 22. And a pair of upper plates 26 extended so as to approach each other from the upper end edges of the pair of side plates 24.

Further, in each rail 20, an insertion hole 21 through which the slider 30 is inserted in the front-rear direction is provided so as to penetrate in the front-rear direction. The insertion hole 21 is formed in a generally rectangular shape in front view that is long in the left-right direction.

As shown in FIGS. 3 and 4, a through groove 23 that communicates the outside with the insertion hole 21 is formed between the pair of upper plates 26 and extends in the front-rear direction.

In addition, as shown in FIGS. 6 and 8, a region of the insertion hole 21 of the rail 20 on the front side of the slider 30 is a wiring region 28 for accommodating and wiring the wire harness 11 together with the harness accommodating portion 50. Has been done.

The wire harness 11 is routed under the floor or mat of the vehicle body or under the floor. The end portion of the wire harness 11 on the vehicle body side is connected to a device such as an ECU (Electronic Control Unit), and power supply and signal transmission between the device on the vehicle body side and the electrical components of the seat S are performed via the wire harness 11. Transmission and reception is performed.

As shown in FIG. 10, the wire harness 11 has a plurality of covered electric wires W in which a core wire is covered with an insulating coating, and a pair of base base materials 12 that sandwich and fix the plurality of covered electric wires W from both sides. There is. The wire harness 11 in the present embodiment is configured such that five covered electric wires W are sandwiched between a pair of base materials 12 from both sides.

Each covered electric wire W is connected to various electric components provided on the sheet S. It should be noted that one end of the covered electric wire W drawn out from the guide protector 40 described later to the seat side and the other end of the covered electric wire W drawn out to the vehicle body side from the harness accommodating portion 50 described below are the base substrate 12. It is installed without being fixed to.

The pair of base substrates 12 are formed of sheet-shaped non-woven fabric. The non-woven fabric is a fabric formed by entwining or adhering fibers, and examples thereof include a fiber sheet, a web (a thin film-like sheet composed of only fibers), or a bat (blanket-like fibers). To be In this embodiment, the base material 12 is made of a fiber sheet. In addition, the base substrate 12 may be a woven fabric made by weaving natural fibers or synthetic fibers.

As shown in FIG. 10, a plurality of covered electric wires W are fixed to the base material 12 so as to be aligned in the vertical direction in the substantially central portion thereof.

The covered electric wire W is fixed to the base member 12 by joining the covered electric wire W to the base member 12 by ultrasonic welding or heat welding, fixing the covered electric wire W by an adhesive or an adhesive, or the covered electric wire W. Is fixed to the base material 12 by a known fixing method such as sewing. The plurality of covered electric wires W fixed to the base material 12 are arranged side by side so as not to create a gap between adjacent covered electric wires W.

A portion where the plurality of covered electric wires W are fixed to the base material 12 is a harness main body 13, and the harness main body 13 is in a direction (vertical direction) orthogonal to a direction (vertical direction) in which the plurality of covered electric wires W are arranged. It can be curved in the direction in which the mounting surface 12A is arranged).

The slider 30 is made of, for example, synthetic resin or metal, and as shown in FIGS. 3 to 7, the slider 30 is disposed at the front end portion 70F of the rail 20 at a front position, and as shown in FIG. The slider 30 is slidable in the front-rear direction between the slider 30 and a rear position arranged at the rear end portion 70B of the rail 20.

As shown in FIG. 6, the slider 30 has a horizontally long rectangular parallelepiped insertion portion 31 arranged in the insertion hole 21, and a mounting portion 32 protruding upward from the upper surface of the insertion portion 31 in a plate shape. The mounting portion 32 is formed over the entire length of the slider 30 in the front-rear direction, and is fixed to the lower end portion of the seat S by a bolt or the like, for example, as shown in FIG. Therefore, when the mounting portion 32 is fixed to the seat S, the seat S moves in the front-rear direction as the slider 30 slides in the rail in the front-rear direction.

Further, a guide protector 40 is attached to the front end of the slider 30, as shown in FIG.
The guide protector 40 is made of an insulating synthetic resin, and changes the direction of the wire harness 11 forward while accommodating the wire harness 11 pulled downward from the seat S inside.

The guide protector 40 is fixed to the slider 30 by a known method such as a bolt or an adhesive, and has a rectangular tube-shaped first insertion portion 42 extending in the up-down direction, and a substantially L-shape from the lower end portion of the first insertion portion 42. The second insertion portion 44 has a rectangular tubular shape and extends in a rectangular shape.

The first insertion portion 42 is arranged inside and outside the rail 20 through the through groove 23 in the rail 20, and guides the wire harness 11 pulled out downward from the seat S to the second insertion portion 44.

The second insertion portion 44 guides the wire harness 11 guided from the first insertion portion 42 to the front end portion of the guide protector 40. The second insertion portion 44 is arranged in the wiring region 28 of the rail 20, and is configured to extend rightward from the first insertion portion 42 and then extend forward.

The front end portion of the second insertion portion 44 is open in the wiring region 28 so as to face the front. At the front end portion of the second insertion portion 44, the wire harness 11 is held by an electric wire holding mechanism (not shown), and the wire harness 11 is pulled out forward from the opening at the front end portion of the second insertion portion 44.

Therefore, the wire harness 11 arranged in the rail 20 is fixed to the front end portion of the slider 30, and follows the movement of the slider 30 in the front-rear direction and moves in the rail 20 in the front-rear direction. There is.

As shown in FIGS. 6 and 8, the front end of the rail 20 has a front end opening that opens forward, and the front end of the rail 20 is pulled out from the front end opening of the rail 20. A harness accommodating portion 50 that accommodates the extra length portion of the wire harness 11 is attached.

As shown in FIGS. 3 and 15, the harness accommodating portion 50 has a synthetic resin lower case 51 and an upper case 52.

As shown in FIG. 4, the lower case 51 has a substantially L-shape in plan view extending from the front end of the rail 20 along the left side portion of the rail 20, and is formed in a box shape that opens upward.

The upper case 52 is substantially L-shaped in a plan view like the lower case 51. The upper case 52 is assembled from above to the lower case 51 so as to close the opening above the lower case 51. The upper case 52 is fixed to the lower case 51 by a lock mechanism 53 provided between the lower case 51 and the upper case 52.

As shown in FIGS. 6 and 8, a portion of the lower case 51 arranged in front of the rail 20 serves as a guide portion 60 for guiding the extra length portion of the wire harness 11 pulled out from the rail 20 toward the left side. There is. In the lower case 51, a portion arranged on the left side portion of the rail 20 is an extra length accommodating portion 70 that accommodates an extra length portion of the wire harness 11 guided by the guide portion 60.

The guide part 60 has an insertion opening 61 for drawing the wire harness 11 drawn out from the front end opening of the rail 20 into the harness accommodating part 50, and the wire harness 11 inserted through the insertion opening 61 is gently L-shaped toward the left side. It is provided with a guide constant pulley 62 which is curved to guide to the extra length accommodation portion 70.

The insertion opening 61 is an opening that is larger in the vertical and horizontal directions than the thickness of the wire harness 11.

As shown in FIGS. 6 and 8, the guide constant pulley 62 includes a support shaft 63 that is long in the vertical direction, and a rotating portion 64 that is rotatably assembled to the support shaft 63.

The support shaft 63 has a substantially cylindrical shape, and the support shaft 63 is fixed to the lower case 51 by a fixing bolt (not shown).

The rotating portion 64 is configured to include a substantially columnar shaft portion 65 and a pair of flange portions 66 provided at both upper and lower end portions of the shaft portion 65.

The wire harness 11 is arranged on the outer peripheral surface of the shaft portion 65 along the shaft portion 65 by bending the harness main body 13 of the wire harness 11.

A support shaft 63 is inserted through the shaft center of the shaft portion 65 in the up-down direction. When the shaft portion 65 rotates about the support shaft 63, the guide constant pulley 62 is inserted into the insertion opening 61 and the extra length. The wire harness 11 can be smoothly moved to and from the housing portion 70.

The pair of flange portions 66 are circumferentially provided on both ends of the shaft portion 65 in the vertical direction so as to project radially. The overhanging dimension of the flange portion 66 is set larger than the thickness dimension of the harness main body 13 in the wire harness 11. The wire harness 11 can prevent the wire harness 11 from coming off from the shaft portion 65 when the wire harness 11 moves along the shaft portion 65 by the flange portion 66.

As shown in FIGS. 6 and 8, the extra length accommodating portion 70 has a long shape in the front-rear direction along the rail 20. The extra length accommodating portion 70 is a rear end located on the opposite side of the front end portion (an example of “one end portion”) 70F into which the wire harness 11 pulled out from the rail 20 via the guide portion 60 is introduced and the front end portion 70F. The wire harness 11 can be linearly housed between the wire harness 11 and the portion (an example of the “other end portion”) 70B.

The extra length accommodating portion 70 has a harness introducing portion 71 that introduces the wire harness 11 from the guide portion 60 and bends it backward.

The harness introducing portion 71 is formed integrally with the lower case 51 so as to extend upward from the bottom portion 51U of the lower case 51 at the front end portion 70F of the extra length accommodation portion 70. The harness introducing portion 71 has a shape that is long in the left-right direction and has a left end portion curved rearward. The wire harness 11 guided from the guide portion 60 is gently curved rearward by being arranged along the front surface 71A of the harness introducing portion 71, and the rear end portion of the extra length accommodating portion 70 from the harness introducing portion 71. It is adapted to be accommodated linearly toward the 70B side.

In addition, at a position slightly rearward of the harness introducing portion 71 in the extra length accommodating portion 70, a harness holding portion 72 that holds the end portion of the wire harness 11 on the vehicle body side of the harness body 13 and a plurality of electric wires in the wire harness 11 are provided. And an outlet 70A for drawing the

The harness holding portion 72 holds the wire harness 11 so as not to be displaced in the front-rear direction by sandwiching the wire harness 11 from the horizontal direction orthogonal to the direction in which the covered electric wires W are arranged.

The outlet 70A has a substantially rectangular shape in a plan view, and the plurality of covered electric wires W of the wire harness 11 held by the harness holding portion 72 are led out to the floor of the vehicle body from the outlet 70A.

Now, as shown in FIG. 6 and FIG. 8, the surplus length accommodating portion 70 is a first bending restriction that bends the wire harness 11 extending from the harness introducing portion 71 toward the rear end portion 70B side toward the front end portion 70F side. The portion 76, a second bending regulation constant pulley (an example of a "second bending regulation portion") 80 for bending the wire harness 11 extending from the first bending regulation portion 76 toward the front end portion 70F, and a second bending regulation pulley. A third bending restriction movable pulley (an example of a “third bending restriction portion”) 90 that bends the wire harness 11 extending from the first bending restriction portion 76 toward the front end portion 70F on the front end portion 70F side. ing.

As shown in FIGS. 7 and 9, the first bending restriction portion 76 is integrally formed with a pair of support arms 91 for holding a third bending restriction moving pulley 90 described later. The 1st curving regulation part 76 is made into the form which curved gently toward the back. The gently curved rear surface of the first curving restricting portion 76 serves as a first curving surface 77 along which the wire harness 11 is arranged. The length dimension of the first bending restriction portion 76 in the left-right direction is set to a size such that the wire harness 11 can be inserted between the side walls 70W arranged on both sides of the first bending restriction portion 76 in the left-right direction. It is set.

Therefore, the first bending restriction portion 76 extends the wire harness 11 from the left end portion 76L to the right end portion 76R along the first curved surface 77, thereby causing the wire harness 11 to move in the front end portion of the first bending restriction portion 76. It can be curved toward the 70F side. Further, since the first bending restriction portion 76 runs the wire harness 11 along the first bending surface 77, the wire harness 11 is smoothly slid to face the harness introducing portion 71 or the second bending restriction constant pulley 80. Can be moved.

The second bending regulation constant pulley 80 has the same configuration as the guide constant pulley 62 of the guide portion 60, and as shown in FIGS. 6 and 8, a support shaft 81 fixed to the lower case 51 and a support shaft 81. The rotary unit 82 is rotatably assembled.

The support shaft 81 has a substantially columnar shape, like the guide constant pulley 62. The support shaft 81 is bolted to the bottom portion 51U of the lower case 51 with a fixing bolt B. As a result, the second bending regulation constant pulley 80 is fixed immediately after the harness introducing portion 71 in the lower case 51.

The rotating portion 82 is configured to include a substantially columnar shaft portion 83 and a pair of flange portions 84 provided at both upper and lower end portions of the shaft portion 83.

As shown in FIGS. 7 and 9, the shaft portion 83 is inserted through the shaft center of the shaft portion 83 so that the support shaft 81 penetrates in the vertical direction. The outer peripheral surface of the shaft portion 83 is a second curved surface 85 arranged along the harness main body 13 of the wire harness 11 in a curved state. Since the pair of flange portions 84 has the same configuration as the guide constant pulley 62, the description thereof will be omitted.

Therefore, the second bending regulation constant pulley 80 can bend the wire harness 11 toward the rear end portion 70B side by disposing the wire harness 11 along the second bending surface 85 of the shaft portion 83. .. Further, in the second bending regulation constant pulley 80, the shaft portion 83 rotates about the support shaft 81, so that the wire harness 11 is smoothly moved toward the first bending regulation portion 76 or the third bending regulation moving pulley 90. It can be done.

As shown in FIGS. 6 and 8, the third bending regulation movable pulley 90 is rotatably assembled to the support shaft 93, and a cylindrical support shaft 93 that is long in the up-down direction and is supported by a pair of support arms 91. The rotary unit 94 is provided.

As shown in FIGS. 7 and 9, the pair of support arms 91 each have a substantially L-shaped plate shape having a support plate 92 at the front end. The rear ends of the pair of support arms 91 are arranged close to each other in the vertical direction, and the pair of support plates 92 are arranged on both sides of the support shaft 93 in the vertical direction. The support shaft 93 is integrally assembled to the pair of support arms 91 by fastening the fixing bolts B penetrating the support plate 92 from both sides in the vertical direction.

Further, at a position behind the portion of the pair of support plates 92 where the support shaft 93 is fixed, the first bending restriction portion 76 is arranged integrally with the pair of support plates 92. In other words, the third bending restriction moving pulley 90 is arranged closer to the front end portion 70F than the first bending restriction portion 76.

The rotating portion 94 is configured to include a substantially cylindrical shaft portion 95 and a pair of flange portions 96 provided at both upper and lower end portions of the shaft portion 95, similarly to the second bending regulation constant pulley 80.

As shown in FIGS. 6 and 8, the shaft portion 95 has a diameter smaller than the length dimension of the first bending restriction portion 76 in the left-right direction. A support shaft 93 is inserted through the shaft center of the shaft portion 95 so as to vertically pass therethrough. The outer peripheral surface of the shaft portion 95 is a third curved surface 97 arranged along the harness main body 13 of the wire harness 11 in a curved state. As shown in FIG. 6, the radius of curvature of the third curved surface 97 is set to be smaller than the radius of curvature of the first curved surface 77 of the first bending restriction portion 76.

Therefore, when the wire harness 11 is arranged along the third curved surface 97 of the shaft portion 95, the wire harness 11 can be bent toward the front end portion 70F side in the third bending regulation movable pulley 90. ..

That is, as shown in FIGS. 6 and 8, the wire harness 11 accommodated in the extra length accommodating portion 70 includes the first curving regulating portion 76, the second curving regulating fixed pulley 80, and the third curving regulating movable pulley 90. It is folded into three or more pieces by and is wound around the first bending restriction portion 76, the second bending restriction constant pulley 80, and the third bending restriction movable pulley 90. That is, the extra length accommodating portion 70 can accommodate the wire harness 11 with the length dimension thereof being ⅓ or less of that when the wire harness 11 is linearly extended.

The length dimension of the first bending restriction portion 76 in the left-right direction is larger than the diameter of the shaft portion 95. Therefore, when the wire harness 11 is arranged along the third curved surface 97 of the shaft portion 95, the wire harness 11A arranged between the harness introducing portion 71 and the first bending regulating portion 76 and the second bending regulation. The wire harness 11C arranged between the constant pulley 80 and the third bending restriction movable pulley 90 does not come into contact with the left-right direction, but is arranged in the left-right direction. Further, the wire harness 11B arranged between the first bending regulation portion 76 and the second bending regulation fixed pulley 80, and the wire harness 11D arranged between the third bending regulation moving pulley 90 and the harness holding portion 72. It becomes a state where and are lined up in the left-right direction without contacting in the left-right direction.

That is, by rotating the shaft portion 95 around the support shaft 93 in a state where the wire harness 11 is arranged along the third curved surface 97 of the shaft portion 95, the wire harness 11 is moved to the second bending regulation constant pulley 80 or. The harness holding portion 72 can be smoothly moved.

Further, as shown in FIGS. 7 and 9, the third curving regulation movable pulley 90 is movable in the front-rear direction in the surplus length accommodating portion 70 together with the first curving restricting portion 76, and the surplus length accommodating portion 70 is also movable. A constant load spring P provided at the rear end portion 70B urges the spring rearward.

The support plates 92 of the pair of support arms 91 that hold the third curving regulation movable pulley 90 can be fitted into the pair of groove portions 73 provided in the bottom portion 51U of the lower case 51 and the upper case 52, respectively. Further, the head portion B1 of the fixing bolt B fastened to the support shaft 93 is fitted into a through groove 74 that is vertically penetrated between the bottom portion 51U of the lower case 51 and the pair of groove portions 73 of the upper case 52. It is possible.

Each groove 73, the through groove 74, and the support plate 92 are formed to extend in the front-rear direction. As each support plate 92 slides in the groove portion 73 and the head B1 of the fixing bolt B slides in the through groove 74, the third bending restriction moving pulley 90 together with the first bending restriction portion 76 has an extra length. It is configured to move in the front-rear direction inside the housing portion 70.

The constant load spring P is a biasing member that biases the third bending restriction pulley 90 and the first bending restriction portion 76 rearward, and is attached to the rear end portions of the pair of support arms 91.

As shown in FIG. 11, the constant force spring P includes a cylindrical holding shaft P1 extending in the left-right direction, a drum P2 having a pair of disc-shaped guide plates P3 attached to the holding shaft P1, and a pair of guide plates. A long metal plate spring P4 wound around the drum P2 is provided between P3.

As shown in FIGS. 6 and 8, the holding shaft P1 is attachable to a pair of bearing portions 75 provided on both sides in the left-right direction of the rear end portion 70B of the extra length accommodation portion 70. The constant load spring P is rotatable about the holding shaft P1 by fitting both ends of the holding shaft P1 into the bearings 75.

As shown in FIGS. 7 and 9, the leaf spring P4 is fastened and fixed to the pair of support arms 91 by a mounting bolt T1 and a mounting nut T2. The leaf spring P4 is bent with a constant curvature, and the return force (load) generated when the leaf spring P4 is stretched straight is constant regardless of the stroke.

That is, when the excess length portion of the wire harness 11 is introduced into the excess length storage portion 70 through the guide portion 60 of the harness storage portion 50, the wire harness 11 sent from the harness introduction portion 71 is moved to the first bend restricting portion 76. While being slid on the first curved surface 77, it is sent toward the second curved regulation constant pulley 80. Further, the wire harness 11 sent from the first bending restriction portion 76 is sent toward the third bending restriction moving pulley 90 while moving on the second bending surface 85 of the second bending restriction constant pulley 80.

Then, when the wire harness 11 sent from the second bending regulation fixed pulley 80 moves on the third bending surface 97 of the third bending regulation moving pulley 90, the third bending regulation moving pulley urged by the constant load spring P. 90 and the first bending restriction portion 76 move rearward.

Then, as shown in FIG. 6, between the wire harness 11A arranged between the harness introducing section 71 and the first bending restriction section 76, and between the first bending restriction section 76 and the second bending restriction constant pulley 80. The length dimension in the front-back direction with the arranged wire harness 11B becomes long. In addition, the wire harness 11C arranged between the second bending regulation fixed pulley 80 and the third bending regulation moving pulley 90, and the wire harness arranged between the third bending regulation moving pulley 90 and the harness holding portion 72. The length dimension in the front-back direction with 11D becomes long. Thereby, the extra length of the wire harness 11 pulled out from the rail 20 is accommodated in the extra length accommodating portion 70.

On the other hand, when the seat S moves rearward, the slider 30 moves rearward from the front position, and the force with which the wire harness 11 is drawn into the rail 20 resists the biasing force of the constant load spring P. The 3-curve regulation movable pulley 90 moves forward together with the first curving regulation portion 76. Then, as shown in FIG. 8, the wire harness 11D arranged between the harness holding portion 72 and the third bending restriction moving pulley 90 moves on the third bending surface 97 of the third bending restriction moving pulley 90, It is sent toward the second curving regulation fixed pulley 80. Further, the wire harness 11 sent to the second curving regulation constant pulley 80 moves on the second curving surface 85 of the second curving regulation constant pulley 80 and is sent toward the first curving regulation portion 76. Then, the wire harness 11 sent to the first bending restriction portion 76 is pulled out from the harness accommodating portion 50 through the guide portion 60 from the harness introducing portion 71 while sliding on the first bending surface 77 of the first bending regulation portion 76. Be done.

That is, when the wire harness 11 is taken in and out of the extra length accommodation portion 70, the wire harness 11 smoothly moves between the first bending regulation portion 76, the second bending regulation fixed pulley 80, and the third bending regulation moving pulley 90. Moving. Then, the first bending restriction portion 76 and the third bending restriction moving pulley 90 are moved toward and away from the second bending restriction fixed pulley 80, so that the first bending restriction portion 76 and the third bending restriction moving pulley 90 and the second bending restriction movable pulley 90 The length dimension of the wire harness 11 between the curved regulation fixed pulley 80 changes. As a result, the wire harness 11 is accommodated in the extra length accommodating portion 70 with a length dimension that is ⅓ or less of the amount of movement of the slider 30.

The present embodiment is configured as described above, and subsequently, the operation and effect of the wire harness routing device 10 will be described.

For example, when the wire harness is accommodated in a folded manner in an extra length accommodating portion for accommodating the extra length of the wire harness, the extra length accommodating portion becomes large and the wire harness routing device becomes There is a concern that it will become large.

Then, the present inventors found out the structure of this embodiment as a result of earnestly studying in order to solve the said subject. That is, in this embodiment, one end is fixed to the rail 20 and the slider 30 slidably arranged on the rail 20, and the other end is pulled out from the rail 20 to the outside. The wire harness 11 is linearly provided between a front end portion (one end portion) 70F into which the wire harness 11 pulled out from the front end is introduced and a rear end portion (other end portion) 70B located on the opposite side of the front end portion 70F. An extra length accommodating portion 70 capable of accommodating is provided. In addition, in the present embodiment, the wire harness 11 that is disposed in the extra length accommodation portion 70 on the rear end portion 70B side of the front end portion 70F and is introduced into the extra length accommodation portion 70 is bent toward the front end portion 70F side. The first curving restricting portion 76 and the second curving restricting pulley that is disposed on the front end portion 70F side in the extra length accommodation portion 70 and that curves the wire harness 11 extending from the first curving restricting portion 76 toward the rear end portion 70B side. The wire harness 11 that is integrally provided with the (second bending restriction portion) 80 and the first bending restriction portion 76 on the front end portion 70F side of the first bending restriction portion 76 and that extends from the second bending restriction fixed pulley 80 is the front end portion. A third bending restriction moving pulley (third bending restriction portion) 90 that bends toward the side is provided. Then, the first bending restriction portion 76 and the third bending restriction moving pulley 90 can be brought into and out of contact with the second bending restriction constant pulley 80, and the second bending restriction constant is fixed by the constant load spring (biasing member) P. It is urged in a direction away from the pulley 80 (rearward).

That is, according to the present embodiment, as shown in FIGS. 6 and 8, the wire harness 11 accommodated in the extra length accommodating portion 70 has the first bending regulation portion 76, the second bending regulation fixed pulley 80, and the third bending regulation. It is folded into three or more parts by the moving pulley 90, and is wound around the first bending restriction portion 76, the second bending restriction constant pulley 80, and the third bending restriction movable pulley 90. As a result, the length of the wire harness 11 becomes 1/3 or less of that when it is linearly extended.
Then, when the slider 30 moves forward and the extra length portion of the wire harness 11 pulled out from the rail 20 is introduced into the extra length accommodation portion 70, as shown in FIG. The 76 and the third bending regulation moving pulley 90 are moved backward by the biasing force of the constant load spring P so as to be separated from the second bending regulation constant pulley 80. Then, the length dimension of the wire harness 11 between the first bending restriction portion 76 and the third bending restriction moving pulley 90 and the second bending restriction constant pulley 80 becomes long.
Further, when the wire harness 11 is pulled out from the extra length accommodation portion 70, as shown in FIG. 8, the first bending restriction portion 76 and the third bending restriction moving pulley 90 resist the urging force of the constant load spring P and move to the first position. 2 Move so as to approach the curved regulation fixed pulley 80. Then, the length dimension of the wire harness 11 between the first bending restriction portion 76 and the third bending restriction moving pulley 90 and the second bending restriction constant pulley 80 becomes short.

That is, the wire harness 11 is accommodated in the extra length accommodating portion 70 in a state that the length dimension in the front-rear direction is 1/3 or less of that when linearly extended.
Then, when the wire harness 11 is taken in and out of the extra length accommodation portion 70 as the slider 30 moves, the first bending restriction portion 76 and the third bending restriction moving pulley 90 are changed to the second bending restriction constant pulley 80. Contact and separate from each other. As a result, the length dimension of the wire harness 11 between the first bending restriction portion 76 and the third bending restriction moving pulley 90 and the second bending restriction constant pulley 80 changes, and the wire harness 11 in the extra length accommodation portion 70. The extra length is stored without being entangled. That is, the extra length accommodating portion 70 can be downsized, and the wire harness routing device 10 can be increased in size, as compared with the conventional case where the wire harness is folded in two and accommodated in the extra length accommodating portion. Can be suppressed.

In addition, according to the present embodiment, the first bending restriction portion 76 and the third bending restriction moving pulley 90 are biased rearward by the winding type constant load spring P that biases the first bending restriction portion 76 and the third bending restriction dynamic pulley 90 with a constant force. Thereby, compared with a case where the first bending restriction portion and the third bending restriction moving pulley are biased by a coil spring or the like, for example, it is possible to suppress the slider 30 from not smoothly sliding due to a change in the biasing force, The slider 30 can be slid smoothly.

Further, according to the present embodiment, the wire harness 11 is curved so as to be inwardly wound in the first bending restriction portion 76 and the second bending restriction constant pulley 80. Therefore, for example, the wire harness is externally wound or bellows-shaped. It is possible to prevent the extra length accommodating portion 70 from increasing in size as compared with the case where the extra length accommodation portion 70 is curved.

Further, according to the present embodiment, the wire harness 11 is formed by arranging and fixing a plurality of covered electric wires W, each of which has a core wire covered with an insulating coating, flatly arranged on the sheet-shaped base substrate 12. Therefore, since the wire harness 11 is flat, when the wire harness 11 is folded and wound around the first bending restriction portion 76, the second bending restriction constant pulley 80, and the third bending restriction movable pulley 90. It is possible to prevent the wire harness 11 from being bulky. Thereby, the extra length accommodation portion 70 that accommodates the extra length portion of the wire harness 11 can be downsized.

Further, according to the present embodiment, the second curving regulation fixed pulley 80 and the third curving regulation moving pulley 90 are pulleys having the synthetic resin shaft portions 83 and 95 rotatable in the bending direction of the wire harness 11. Has been formed. Therefore, the wire harness 11 can be smoothly moved between the second curving regulation fixed pulley 80 and the third curving regulation moving pulley 90. Thereby, the slider 30 can be slid smoothly.

Further, the first bending restricting portion 76 of the present embodiment is a synthetic resin first curved surface 77 having a rounded rear end that is an end opposite to the harness introducing portion 71. The radius of curvature of the shaft portion 95 of the three-curve regulation movable pulley 90 is set to be smaller than the radius of curvature of the first curved surface 77 of the first bend regulation portion 76. That is, the wire harness 11 that is bent by the third bending restriction movable pulley 90 is bent to a smaller diameter than the wire harness 11 that is bent by the first bending surface 77 of the first bending restriction portion 76. It is possible to prevent the wire harnesses 11 arranged in the bending regulation portion 76, the second bending regulation fixed pulley 80 and the third bending regulation moving pulley 90 from coming into contact with each other. Accordingly, it is possible to prevent the wire harnesses 11 from sliding and the slider 30 from not smoothly sliding.

<Embodiment 2>
Next, a second embodiment will be described with reference to FIGS. 12 and 13.
The wire harness routing device 110 of the second embodiment changes the second bending restriction constant pulley 80 and the third bending restriction movable pulley 90 of the first embodiment, and also changes the base material 12 of the wire harness 11 of the first embodiment. Since the configuration is changed, and the configuration, operation, and effect common to those of the first embodiment are duplicated, the description thereof will be omitted. The same components as those in the first embodiment are designated by the same reference numerals.

In the second embodiment, the portion that bends the wire harness 11 extending from the first bending restriction portion 76 toward the rear side is the second bending restriction portion 180 integrally formed with the lower case 51. Further, the portion that bends the wire harness 11 extending from the second bending restriction portion 180 toward the front side is the third bending restriction portion 190 that is integrally formed with the pair of support arms 91.

As shown in FIGS. 12 and 13, the second bending restriction portion 180 is formed in a block shape having a substantially semicircular shape in plan view, and the front end portion of the second bending restriction portion 180 bends forward. It has two curved surfaces 185.

The third curving restricting portion 190 is formed in a block shape having a substantially semicircular shape in plan view, and the rear end of the third curving restricting portion 190 is a third curving surface 197 that curves rearward.

The base material 112 of the wire harness 111 is formed of a very thin plate of synthetic resin having a smooth surface.

That is, in the present embodiment, the front end portion, which is the end portion of the second bending restriction portion 180 on the harness introducing portion 71 side, has the rounded second curved surface 185. Further, the rear end of the third curving restricting portion 190 has a rounded third curving surface 97. The surface of the base material 112 of the wire harness 111 is smooth.
That is, the wire harness 11 is smoothly curved on the curved surfaces 185 and 197, and the friction between the wire harness 11 and the curved surfaces 185 and 197 can be reduced. Thereby, when the first bending restriction portion 76 and the third bending restriction portion 190 come into contact with and separate from the second bending restriction portion 180, the wire harness 11 slides smoothly with respect to each member, and the slider 30 is moved. It can be slid smoothly.

<Embodiment 3>
Next, a third embodiment will be described with reference to FIG.
As shown in FIG. 14, the wire harness routing device 210 of the third embodiment eliminates the harness introducing portion 71 and the first bending restricting portion 76 of the first embodiment, and the base material of the wire harness 11 of the first embodiment. 12 is changed, and the configuration, operation, and effect common to those of the first embodiment are duplicated, and thus the description thereof will be omitted. The same components as those in the first embodiment are designated by the same reference numerals.

Therefore, as shown in FIG. 14, the wire harness 11 according to the third embodiment is arranged so as to wind around the harness holding portion 72 around the third bending restriction moving pulley 90 and the second bending restriction fixed pulley 80. Further, the wire harness 11 extending rearward from the second curving regulation fixed pulley 80 is arranged so as to be wound around the third curving regulation moving pulley 90 and the second curving regulation fixed pulley 80 again. Then, the wire harness 11 is pulled out from the second curving regulation constant pulley 80 toward the guide portion 60.

That is, in the third embodiment, the wire harness 11 that is disposed on the rear end portion 70B side of the front end portion 70F in the extra length accommodation portion 70 and bends the wire harness 11 introduced into the extra length accommodation portion 70 toward the front end portion side. A three-curve regulation movable pulley (an example of “other-end curb regulation portion”) 90, and a wire harness 11 which is disposed on the front end side in the extra length accommodation portion 70 and extends from the third curb regulation movable pulley 90 to the rear end side. A second curving regulation fixed pulley (an example of “one-end curving regulation section”) 80 that bends toward the front. In addition, the wire harness 11 is arranged so as to be wound twice (a plurality of times) over the third bending restriction movable pulley 90 and the second bending restriction constant pulley 80, and the third bending restriction movable pulley 90 is It is movable toward and away from the curving regulation constant pulley 80, and is biased by the constant load spring P in a direction away from the second curving regulation constant pulley 80.

Therefore, according to the third embodiment, since the wire harness 11 is wound twice around the third bending restriction dynamic pulley 90 and the second bending restriction constant pulley 80, the length dimension of the wire harness 11 is linearly extended. It can be about 1/4 of the time.

Further, according to the present embodiment, as in the second embodiment, the base substrate 212 of the wire harness 211 is formed of a very thin plate of synthetic resin having a smooth surface. Therefore, even when the wire harness 11 is heavily wound around the third curving regulation moving pulley 90 and the second curving regulation fixed pulley 80 when the wire harness 11 is taken in and out of the extra length accommodation portion 70, the wire harness 11 The two slide smoothly. Thereby, the slider 30 can be slid smoothly.

<Other Embodiments>
The technology disclosed in this specification is not limited to the embodiments described by the above description and the drawings, and includes various aspects such as the following.

(1) In the above-described embodiment, the third bending restriction moving pulley 90 or the third bending restriction portion 190 is biased rearward by the constant load spring P. However, the configuration is not limited to this, and the third bending restriction movable pulley or the third bending restriction portion may be configured to be biased by a coil spring or the like.

(2) In the above embodiment, the extra length accommodating portion 70 is arranged on the left side from the front end of the rail 20. However, the configuration is not limited to this, and the extra length accommodation portion may be configured to be arranged from the front end portion of the rail to the right side portion, or may be configured to extend from the front end portion to either the left or right direction.

(3) In the above-described embodiment, the wire harness 11 in which a plurality of covered electric wires W are flatly arranged and fixed on the base materials 12, 112, 212 is used. However, the present invention is not limited to this, and a configuration in which a wire harness in which a plurality of covered electric wires are bundled with a binding band or the like may be used may be used.

(4) In the third embodiment, the wire harness 11 is doubly wound around the third curving regulation moving pulley 90 and the second curving regulation fixed pulley 80. However, the configuration is not limited to this, and the wire harness may be wound three or more times around the third curving regulation moving pulley and the second curving regulation fixed pulley.

10, 110, 210: Wire harness wiring device 11: Wire harness 20: Rails 21, 121, 221: Base material 30: Slider 70: Extra length accommodating portion 70F: Front end portion (an example of "one end portion")
70B: Rear end (an example of "other end")
76: 1st curving regulation part 77: 1st curving surface (an example of "curving surface")
80, 180: Second curved regulation fixed pulley (an example of "second curved regulation section" or "one-end curved regulation section")
83: Shafts 90, 190: Third curving regulation moving pulley (an example of "third curving regulation section" or "other end curving regulation section")
95: Shaft 185: Second curved surface (an example of "curved surface")
197: Third curved surface (an example of “curved surface”)
P: Constant force spring (an example of "biasing member")
W: Coated electric wire (an example of "electric wire")

Claims (12)

Rails,
One end is fixed to a slider slidably arranged with respect to the rail, and the other end is a wire harness pulled out from the rail to the outside,
An extra length accommodating portion capable of linearly accommodating the wire harness between the one end into which the wire harness pulled out from the rail is introduced and the other end located on the opposite side of the one end,
A first curving restricting portion that is arranged closer to the other end than the one end in the extra length accommodating portion, and bends the wire harness introduced into the extra length accommodating portion toward the one end.
A second bending restricting portion that is arranged on the one end side in the extra length accommodation part and bends the wire harness extending from the first bending restricting portion toward the other end side;
A third bending regulation that is provided integrally with the first bending regulation section on the one end side with respect to the first bending regulation section and that bends the wire harness extending from the second bending regulation section toward the one end side. And a section,
The first bending restriction portion and the third bending restriction portion can be brought into contact with and separated from the second bending restriction portion, and are biased by a biasing member in a direction away from the second bending restriction portion. Wire harness installation device. The wire harness routing device according to claim 1, wherein the wire harness is curved so as to be internally wound in the first bending restriction portion and the second bending restriction portion. The wire harness wiring according to claim 1 or 2, wherein the biasing member is a take-up type constant load spring that biases the first bending restriction portion and the third bending restriction portion with a constant force. apparatus. The wire harness according to any one of claims 1 to 3, wherein the wire harness is formed by flatly arranging and fixing a plurality of electric wires in which core wires are covered with an insulating coating on a sheet-shaped base substrate. Routing device. The wire harness routing device according to claim 4, wherein the base material of the wire harness is made of a synthetic resin having a smooth outer surface. The first bending restriction portion, the second bending restriction portion, and the third bending restriction portion are made of synthetic resin,
The first bending restriction portion and the third bending restriction portion each have a curved surface with a rounded end on the other end side,
The wire harness routing device according to any one of claims 1 to 5, wherein the second bend restricting portion has a rounded curved surface at an end portion on the one end side. The wire harness routing device according to claim 6, wherein a radius of curvature of the curved surface of the third bend restricting portion is set to be smaller than a radius of curvature of the curved surface of the first bend restricting portion. The second bending restricting portion and the third bending restricting portion are formed by pulleys having a synthetic resin shaft portion rotatable in a bending direction of the wire harness. The wire harness installation device according to claim 1. The first bending restricting portion is a curved surface made of synthetic resin with a rounded end on the other end side,
The wire harness routing device according to claim 8, wherein a radius of curvature of the shaft portion of the third bend restricting portion is set to be smaller than a radius of curvature of the curved surface of the first bend restricting portion. Rails,
One end is fixed to a slider slidably arranged with respect to the rail, and the other end is a wire harness pulled out from the rail to the outside,
An extra length accommodating portion capable of linearly accommodating the wire harness between the one end into which the wire harness pulled out from the rail is introduced and the other end located on the opposite side of the one end,
The other end curving restricting portion that is disposed closer to the other end portion than the one end portion in the extra length accommodating portion, and that bends the wire harness introduced into the extra length accommodating portion toward the one end portion side,
One end curving restricting portion that is disposed on the one end side in the extra length accommodating portion and that curls the wire harness extending from the other end curving restricting portion toward the other end side,
The wire harness is arranged so as to be wound a plurality of times over the other end bending restriction portion and the one end bending restriction portion,
The other-end bending restricting portion is capable of coming into contact with and separating from the one-end bending restricting portion, and is biased by a biasing member in a direction away from the one-end bending restricting portion. The wire harness routing device according to claim 10, wherein the wire harness is formed by arranging and fixing a plurality of electric wires, each having a core wire covered with an insulating coating, on a sheet-shaped base substrate. The wire harness routing device according to claim 11, wherein the base material of the wire harness is made of synthetic resin having a smooth outer surface.

Images