JP6917320B2 - Wire harness wiring structure - Google Patents

Description

The present invention relates to a wire harness wiring structure.

In the wiring structure of the wire harness shown in FIGS. 6 and 7 of Patent Document 1 below, the shaft having a hollow inside is rotatably supported by the armrest support bracket arranged on the side frame of the seat back. There is. The skeleton member of the armrest is fixed to this shaft, and the wire harness that has passed through the through hole of the side frame is guided to the inside of the skeleton member through the inside of the shaft.

Japanese Unexamined Patent Publication No. 2001-45641

In the above-mentioned prior art, since the wire harness is arranged at the center of the shaft, the wire harness may be repeatedly twisted and broken due to the rotation of the armrest.

In consideration of the above facts, the present invention considers the above facts, and the wire harness arranged between the first vehicle interior product and the second vehicle interior product is disconnected by the relative rotation between the first vehicle interior product and the second vehicle interior product. The purpose is to obtain a wire harness wiring structure that can prevent or suppress this.

The wire harness wiring structure according to the invention according to claim 1 is composed of a first vehicle interior product and a second vehicle interior product connected to each other so as to be relatively rotatable via a shaft, and the inside of the first vehicle interior product. It is arranged inside the second vehicle interior along the axis of the shaft, and has an extra length portion extending in the circumferential direction of the shaft around the shaft, and the extra length portion is formed by the relative rotation. It is equipped with a deformable wire harness.

The "along the axis of the shaft" according to claim 1 includes a case where the wire harness passes through the inside of the shaft and a case where the wire harness is locked to the outer peripheral surface of the shaft.

In the wire harness wiring structure according to claim 1, the first vehicle interior product and the second vehicle interior product are connected to each other via a shaft so as to be relatively rotatable. A wire harness is laid from the inside of the first vehicle interior to the inside of the second vehicle interior along the axis of the shaft. This wire harness has an extra length portion extending around the shaft in the circumferential direction of the shaft, and the extra length portion is deformed by the relative rotation described above. As a result, it is possible to prevent or suppress the wire harness from being repeatedly twisted by the relative rotation, so that it is possible to prevent or suppress the disconnection of the wire harness.

The wire harness wiring structure according to the invention according to claim 2 is the wire harness wiring structure according to claim 1, wherein the first vehicle interior part is a seat back of a vehicle seat, and the second vehicle. The interior product is the arm rest of the vehicle seat.

In the wire harness wiring structure according to claim 2, when the armrest rotates relative to the seat back of the vehicle seat, the extra length portion of the wire harness arranged between the seat back and the armrest is deformed. This makes it possible to prevent or suppress the wire harness from being broken due to the relative rotation of the armrest with respect to the seat back.

The wire harness wiring structure according to the invention according to claim 3 is the wire harness wiring structure according to claim 1 or 2, wherein the second vehicle interior product accommodates the extra length portion. An extra length accommodating chamber is formed to regulate the direction of the deformation of the extra length portion.

In the wire harness wiring structure according to claim 3, the extra length portion of the wire harness is housed in the extra length portion accommodating chamber formed in the interior product of the second vehicle. As a result, it is possible to prevent the appearance quality from being impaired by the extra length portion of the wire harness. Moreover, the direction of deformation of the extra length portion is regulated by the extra length portion accommodating chamber. As a result, it is possible to prevent or suppress the load on the wire harness due to the extra length portion being deformed in an unintended direction.

The wire harness wiring structure according to the invention according to claim 4 is the wire harness wiring structure according to any one of claims 1 to 3, wherein the second vehicle interior product is an axis of the shaft. It is configured to include a skeleton member having a pair of facing walls facing in a direction, the shaft rotatably penetrates the pair of facing walls, and one end thereof is fixed to the first vehicle interior product. A retaining member attached to the other end of the wall is used to retain the pair of facing walls, and the retaining member can be attached to and detached from the other end from the side opposite to the first vehicle interior product. ing.

In the wire harness wiring structure according to claim 4, the shaft rotatably penetrates a pair of facing walls included in the skeleton member of the second vehicle interior product. One end of the shaft is fixed to the interior product of the first vehicle, and a retaining member is attached to the other end of the shaft. The retaining member retains the shaft from the pair of facing walls. The retaining member is detachable from the other end of the shaft from the side opposite to the first vehicle interior product. Therefore, when the second vehicle interior product is attached to the first vehicle interior product, the shaft fixed to the first vehicle interior product is passed through the pair of facing walls of the second vehicle interior product, and the shaft is inserted. A retaining member can be attached to the other end of the vehicle from the side opposite to the first vehicle interior product. This facilitates the work of assembling the second vehicle interior product to the first vehicle interior product.

The wire harness wiring structure according to the invention according to claim 5 is the wire harness wiring structure according to any one of claims 1 to 4, wherein the shaft is the same as the extra length portion. It has a tubular portion that faces the radial direction of the shaft and has an opening on the side of the first vehicle interior product, and the portion of the wire harness on the side of the first vehicle interior product side with respect to the extra length portion is , It is inserted into the tubular portion through a hole formed in the peripheral wall of the tubular portion and is arranged to the side of the first vehicle interior product.

According to the wire harness wiring structure according to claim 5, the shaft connecting the first vehicle interior product and the second vehicle interior product faces the extra length portion of the wire harness in the radial direction of the shaft. Moreover, a tubular portion having a tubular shape with an opening on the interior component side of the first vehicle is provided. Then, a portion of the wire harness on the side of the first vehicle interior product is inserted into the tubular portion through a hole formed in the peripheral wall of the tubular portion and is routed to the side of the first vehicle interior product. .. This facilitates the wiring of the wire harness around the shaft.

The wire harness wiring structure according to claim 6 is the wire harness wiring structure according to claim 5, wherein the wire harness has a bent portion between a portion located in the tubular portion and the extra length portion. The portion between the bent portion and the portion located in the tubular portion is restrained by the shaft by the deformation restricting member attached to the tubular portion.

According to the wire harness wiring structure according to claim 6, the wire harness has a bent portion between a portion located in the tubular portion of the shaft and an extra length portion. Then, the portion of the wire harness between the portion located in the tubular portion and the bent portion is restrained by the shaft by the deformation regulating member attached to the tubular portion. Thereby, it is possible to prevent or suppress the deformation of the extra length portion due to the relative rotation between the first vehicle interior product and the second vehicle interior product from extending to the portion located in the tubular portion. As a result, it is possible to regulate the deformation of the wire harness so that it occurs only in the extra length portion.

The wire harness wiring structure according to the invention according to claim 7 is the wire harness wiring structure according to claim 6, wherein the bending radius of the bending portion of the deformation restricting member is equal to or less than a preset radius. It has a bending radius regulation part to prevent this.

According to the wire harness wiring structure according to claim 7, the bending radius of the deformation restricting member attached to the tubular portion of the shaft prevents the bending radius of the bending portion from becoming less than a preset radius. There is a regulatory department. As a result, it is possible to prevent or suppress the wire harness from being broken at the bent portion.

The wire harness wiring structure according to the invention according to claim 8 is the wire harness wiring structure according to any one of claims 5 to 7, wherein the wire harness is on the side of the first vehicle interior product. A connector is attached to the end portion so that the connector can pass through the hole.

Since the wire harness wiring structure according to claim 8 is configured as described above, the connector is attached to the wire harness before the work of inserting the wire harness into the hole formed in the tubular portion of the shaft. Can be assembled.

The wire harness wiring structure according to the invention according to claim 9 is the shaft in the wire harness wiring structure according to any one of claims 4 to 8, which cites claim 3 or claim 3. The extra length accommodating chamber is provided on one end side of the second vehicle interior product, and the extra length portion accommodates electrical components on the other end side of the second vehicle interior product and is provided by a partition portion. An electrical component storage chamber partitioned from the storage chamber is formed, and the wire harness is connected to the electrical component and has a harness insertion hole formed in the partition on the other end side of the shaft. It extends through the extra length accommodating chamber.

In the wire harness wiring structure according to claim 9, a shaft and an extra length accommodating chamber are provided on one end side of the second vehicle interior product, and the extra length portion of the wire harness is accommodated in the extra length accommodating chamber. ing. On the other end side of the second vehicle interior component, an electrical component accommodating chamber is formed by accommodating the electrical component and a partition portion, and a wire harness is connected to the above electrical component. This wire harness extends into the extra length accommodating chamber through the harness insertion hole formed in the partition portion on the other end side (electrical component side) of the second vehicle interior component with respect to the shaft. As a result, the wiring route of the wire harness in the interior parts of the second vehicle can be shortened.

As described above, according to the wire harness wiring structure according to the present invention, the wire harness allocated between the first vehicle interior product and the second vehicle interior product is the first vehicle interior product and the second vehicle interior product. It is possible to prevent or suppress disconnection due to relative rotation with the vehicle interior parts.

It is a perspective view of the vehicle seat configured by applying the wire harness wiring structure which concerns on embodiment of this invention. It is a perspective view which shows the armrest (second vehicle interior part) and the wire harness. It is a perspective view which shows the center shaft (shaft) and the armrest mounting bracket. It is a rear view which shows the structure of the periphery including an armrest and an armrest mounting bracket as seen from the rear side of a seat. It is sectional drawing which shows the cut surface along the F5-F5 line of FIG. It is a perspective view which shows the state which the armrest is attached to the armrest mounting bracket via the center shaft. It is a perspective view which shows the armrest in a state where a part of the epidermis is broken. It is a perspective view which shows the state which the skin and the finisher were removed from the armrest. It is sectional drawing which shows the cut surface along the line F9-F9 of FIG. FIG. 5 is an exploded perspective view showing a part of the configuration shown in FIG. 8 in an exploded manner. It is an exploded perspective view which shows the component member of an armrest and its surroundings. It is a perspective view which shows the situation when the wire harness attached to the armrest is inserted into the hole of a center shaft. It is a perspective view which shows the situation when a harness guide (deformation regulation member) is attached to the tubular part of a center shaft. It is a perspective view which shows the situation when an armrest is attached to a center shaft. It is a perspective view which shows the situation when the bolt (the retaining member) is attached to the other end of the center shaft. It is a perspective view which shows the structure around the extra length accommodating chamber in the armrest, and is the figure of the state which the armrest is located at the use position. It is a side view which shows the structure around the extra length accommodating chamber in an armrest, and is the figure of the state which the armrest is located at the use position. It is a side view corresponding to FIG. 17 which shows the state which the armrest is located in the retracted position.

Hereinafter, the wire harness wiring structure 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 18. The arrows FR, UP, and LH appropriately shown in each drawing indicate the front direction, the upward direction, and the left direction of the vehicle seat 12 configured by applying the wire harness wiring structure 10. Hereinafter, when the description is simply made using the front-rear, left-right, up-down directions, the directions with respect to the vehicle seat 10 are shown. Further, in each drawing, some reference numerals may be omitted in order to make the drawings easier to see.

As shown in FIG. 1, the vehicle seat 10 according to the present embodiment includes a seat cushion 14 that supports the buttocks and thighs of a seated person (not shown), a seat back 16 that supports the back of the seated person, and a seat. It includes a headrest 18 that supports a person's head and an armrest 50 that supports a seated person's arm (here, the left arm). The vehicle seat 12 is, for example, a driver's seat of a vehicle (not shown) and is arranged on the right side of the vehicle interior. The front-rear, left-right, up-down directions of the vehicle seat 12 coincide with the front-rear, left-right, up-down directions of the vehicle. When the vehicle seat 12 is arranged on the left side of the vehicle interior, the configuration is symmetrical with that of the present embodiment.

The seat cushion 14 is connected to the vehicle body floor portion (not shown) via the left and right slide rails 22, and the seat back 16 is connected to the rear end portion of the seat cushion 14 via a reclining mechanism (not shown). Further, the headrest 18 is rotatably connected to the upper end portion of the seat back 16, and the armrest 50 is rotatably connected to the side portion (here, the left side portion) of the seat back 16. The seat back 16 corresponds to the "first vehicle interior product" in the present invention, and the armrest 50 corresponds to the "second vehicle interior product" in the present invention. Then, in the present embodiment, the wire harness 94 is continuously arranged from the inside of the seat back 16 to the inside of the armrest 50. Hereinafter, a specific description will be given.

As shown in FIG. 2, the armrest 50 is formed in a long rectangular parallelepiped shape, and the frame 30 of the seat back 16 (hereinafter, “seat back frame”) is formed via a center shaft 24 (see FIG. 3) as a shaft. It is connected to (referred to as "30"). The armrest 50 is rotatable around the center shaft 24 between the use position shown by the solid line in FIG. 1 and the storage position shown by the alternate long and short dash line in FIG. When the armrest 50 is located at the used position, the front-back, left-right, up-down directions of the armrest 50 and the front-back, left-right, up-down directions of the vehicle seat 12 are configured to coincide with each other. In the following description, the front-back, left-right, up-down directions described with respect to the armrest 50 shall indicate the direction with respect to the vehicle seat 12 in the state where the armrest 50 is located at the use position.

The seat back frame 30 includes a left side frame 32 (see FIGS. 4 and 5) extending in the vertical direction of the seat back 16 in the left side portion of the seat back 16 and an armrest fixed to the left side surface of the left side frame 32. It is provided with a mounting bracket 36. The armrest mounting bracket 36 includes a vertical wall 36A facing the left side frame 32 from the left side (outside in the seat width direction), and a front wall 36B extending from both ends of the vertical wall 36A in the front-rear direction to the right side (inside in the seat width direction). It is composed of a rear wall 36C, and the front wall 36B and the rear wall 36C are fixed to the left side frame 32 by means such as welding. A circular through hole 38 is formed in the central portion of the vertical wall 36A, and a circular through hole 34 (see FIG. 5) is formed in the left side frame 32 at a position facing the through hole 38. .. Further, an arcuate arc hole 40 is formed on the upper side of the through hole 38 in the vertical wall 36A. The arc hole 40 is curved concentrically with the through hole 38.

The center shaft 24 (not shown in FIGS. 8 to 10) is formed of, for example, a stepped substantially cylindrical shape made of metal, and is arranged outside the vertical wall 36A in the seat width direction in a posture in which the axial direction is along the seat width direction. Has been done. The center shaft 24 is coaxially and integrally provided with a cylindrical shaft portion 24A and a bottomed tubular shaft portion 24A at one end in the axial direction (inner end in the seat width direction). It is provided with a cylindrical portion 24B that has been formed. A screw hole 26 is coaxially formed at the other end of the shaft portion 24A in the axial direction (the outer end portion in the seat width direction). The tubular portion 24B opens toward the side opposite to the shaft portion 24A (seat back 16 side; right side). The inner portion of the tubular portion 24B in the seat width direction is fitted in the through hole 38 of the vertical wall 36A and is fixed to the vertical wall 36A by means such as welding. A rectangular hole (opening) 28 is formed in a portion of the peripheral wall 24B1 (reference numeral is omitted except for FIG. 3) of the tubular portion 24B facing the rear side of the seat. The hole 28 is located outside the vertical wall 36A in the seat width direction.

As shown in FIGS. 1, 2, and 4 to 11, the armrest 50 includes an armrest frame 52 which is a skeleton member, an outer pad 60 which is a pad material, an inner pad 66 and a center pad 74, and a trim which is a skin. It includes 78, a finisher 80 as an exterior material, and an electrical component 92 formed in a rectangular block shape and attached to the front portion of the armrest frame 52. One end of the wire harness 94 is connected to the electrical component 92.

The armrest frame 52 is formed by, for example, press-molding a steel plate, and has a long plate-shaped bottom wall 52A having a longitudinal direction of the armrest 50 as a longitudinal direction and a vertical direction of the armrest 50 as a plate thickness direction, and a bottom. It is provided with a pair of facing walls 52B and 52C extending upward from the left and right ends of the rear portion of the wall 52A to the upper side of the armrest 50. The bottom wall 52A is bent to the upper side of the armrest 50 on the front side of the armrest 50 with respect to the pair of facing walls 52B and 52C. An electrical component 92 is fixed to the upper surface of the front portion of the bottom wall 52A by means such as screwing. The pair of facing walls 52B and 52C face each other with a gap in the seat width direction. Circular bearing holes 54 and 56 (reference numerals omitted in FIG. 5) are formed in the central portion of the pair of facing walls 52B and 52C. A stopper pin 58 is fixed to the front end of the facing wall 52C on the right side. The stopper pin 58 extends from the facing wall 52C on the right side to the right side (inside in the seat width direction).

The outer pad 60, the inner pad 66, and the center pad 74 are made of a foam such as urethane foam. The outer pad 60 is formed in a long box shape having a longitudinal direction in the front-rear direction of the seat and an opening inside in the width direction of the seat. An armrest frame 52 is housed inside the outer pad 60, and an electrical component accommodating chamber 62 accommodating the electrical component 92 is formed in the front portion of the outer pad 60. The electrical component storage chamber 62 is open toward the upper side of the seat. Further, on the left wall portion of the outer pad 60, a circular through hole 64 (reference numeral omitted in FIG. 5) is formed at a position facing the bearing holes 54 and 56 described above. The through hole 64 is arranged coaxially with the bearing holes 54 and 56.

The inner pad 66 is formed in the shape of a long plate having the front-rear direction of the seat as the longitudinal direction and the width direction of the seat as the thickness direction, and is overlapped inside the outer pad 60 in the width direction of the seat. The inner pad 66 closes the opening inside the outer pad 60 in the seat width direction. At the rear portion of the inner pad 66, an extra length accommodating chamber 68 that opens toward the right side (inside in the seat width direction) is formed. The extra length accommodating chamber 68 has a substantially circular shape when viewed from the seat width direction. A circular through hole 70 (reference numeral omitted in FIG. 5) is formed in the central portion of the extra length accommodating chamber 68. The through hole 70 is arranged coaxially with the bearing holes 54 and 56 described above.

Further, a front extension portion 68A extending to the front side of the armrest 50 is provided in the front portion of the extra length portion accommodating chamber 68. A harness insertion hole 71 that penetrates the inner pad 66 in the seat width direction is formed at the front end portion of the front extension portion 68A. An intermediate portion of the wire harness 94 is inserted into the harness insertion hole 71. Further, the inner pad 66 is formed with a pin insertion hole 72 that penetrates the inner pad 66 in the seat width direction in the vicinity of the upper side of the front extension portion 68A. The above-mentioned stopper pin 58 is inserted into the pin insertion hole 72.

The center pad 74 is formed in a rectangular block shape, and is fitted between a pair of facing walls 52B and 52C. A through hole 76 that penetrates the center pad 74 in the seat width direction is formed in the central portion of the center pad 74. The through hole 76 is arranged coaxially with the bearing holes 54 and 56 described above.

The trim 78 is formed in a substantially long rectangular bag shape by sewing a plurality of base fabrics made of, for example, cloth material, leather, synthetic leather, etc. to each other, and covers the outer pad 60 and the inner pad 66. Has been done. A lid 78A for opening and closing the upper end opening of the electrical component storage chamber 62 is provided on the front portion of the trim 78. A finisher 80 formed in a rectangular plate shape is fixed to the upper surface of the lid portion 78A. Further, a circular through hole 82 through which the above-mentioned stopper pin 58 is inserted is formed in the wall portion on the right side of the trim 78. Further, in the left and right wall portions of the trim 78, circular through holes 84 are located at positions facing the bearing holes 54 and 56 of the armrest frame 52, the through holes 64 of the outer pad 60, and the through holes 70 of the inner pad 66 (FIG. 12, FIG. 14, FIG. 15) and through hole 86 (see FIGS. 2 and 11) are formed.

Then, the center shaft 24 inserted into the armrest 50 from the through hole 86 formed in the wall portion on the right side of the trim 78 is inserted into the above-mentioned through holes 70 and 76 and the bearing holes 54 and 56. The shaft portion 24A of the center shaft 24 is rotatably fitted in the bearing holes 54 and 56. Then, the bolt (retaining member) 88 is screwed (mounted) into the screw hole 26 of the center shaft 24 to prevent the armrest 50 from coming off from the center shaft 24. As a result, the armrest 50 and the seat back 16 are connected to each other via the center shaft 24 so as to be relatively rotatable. Further, the stopper pin 58 described above is inserted into the arc hole 40 of the armrest mounting bracket 36. As a result, the rotation range of the armrest 50 with respect to the seat back 16 is limited between the above-mentioned use position and the storage position.

The head of the bolt 88 is arranged in the through hole 64 of the outer pad 60, and is seated by a resin cap 90 (see FIGS. 11 and 15) fitted in the through hole 84 on the left side of the trim 78. It is covered from the outside in the width direction. The bolt 88 is detachable from the side opposite to the seat back 16 with respect to the other end of the center shaft 24 in the axial direction.

The wire harness 94 is routed from the inside of the seat back 16 to the inside of the armrest 50 along the axis of the center shaft 24. One end of the wire harness 94 located in the armrest 50 is connected to the electrical component 92 via a connector 96 attached to the one end. The other end of the wire harness 94 is connected to a wire harness (not shown) on the vehicle body side via a connector 98 attached to the other end and a connector (not shown). As a result, the electrical component 92 and the electrical device on the vehicle body side are electrically connected, and the electrical device can be controlled by operating a switch or the like provided on the electrical component 92. Note that, in FIGS. 2 and 11 to 13, the wire harness 94 is shown shorter than it actually is.

The wire harness 94 extends from the electrical component 92 to the rear end side (one end side; the side where the center shaft 24 and the extra length accommodating chamber 68 are provided) of the armrest 50, and is inserted into the harness insertion hole 71 of the inner pad 66. , Is guided into the extra length containment chamber 68. The inner pad 66 constitutes a partition portion that separates the extra length accommodating chamber 68 and the electrical component accommodating chamber 62. In the middle portion of the wire harness 94 located in the extra length portion accommodating chamber 68, an extra length portion 94A extending toward the rear end side of the armrest 50 and protruding downward of the armrest 50 and bent in a substantially arc shape is formed. Has been done. The extra length portion 94A is located below the armrest 50 with respect to the tubular portion 24B of the center shaft 24, and faces the tubular portion 24B in the radial direction of the tubular portion 24B. The extra length portion 94A extends around the center shaft 24 in the circumferential direction of the center shaft 24 (curves substantially concentrically with the center shaft 24).

Further, in the middle portion of the wire harness 94 located in the extra length portion accommodating chamber 68, a bent portion 94B bent from the rear end portion of the extra length portion 94A to the front side of the armrest 50, and an armrest rather than the bent portion 94B. An inner bent portion 94C that is bent to the right side (inside in the seat width direction) on the front side of the 50 is provided. The portion of the wire harness 94 between the bent portion 94B and the inner bent portion 94C is inserted into the hole 28 of the center shaft 24. The hole 28 is formed in a size that allows the connector 98 (see FIG. 1) described above to pass through. The inner bent portion 94C is located inside the tubular portion 24B of the center shaft 24, and corresponds to the “portion located in the tubular portion” in the present invention. Further, the portion of the wire harness 94 on the seat back 16 side of the inner bent portion 94C extends inward in the width direction of the seat back 16 through the through hole 34 of the left side frame 32.

Further, a harness guide 100 as a deformation regulating member is attached to the tubular portion 24B of the center shaft 24. The harness guide 100 is made of, for example, resin, and has a substantially C-shaped plate shape in which the rear end side of the armrest 50 is open when viewed from the seat width direction. The harness guide 100 is mounted on the outside of the tubular portion 24B. The harness guide 100 is provided with a fitting projection 101 (reference numeral omitted except for FIG. 13) fitted in a turning hole 25 (reference numeral omitted except for FIG. 16) formed in the peripheral wall 24B1 of the tubular portion 24B. There is. As a result, the relative rotation of the harness guide 100 with respect to the tubular portion 24B is restricted. Further, a portion of the wire harness 94 between the bent portion 94B and the inner bent portion 94C is sandwiched between the upper and lower open ends 100A and 100B of the harness guide 100. As a result, the portion of the wire harness 94 between the bent portion 94B and the inner bent portion 94C is constrained by the center shaft 24. Further, the lower open end portion 100B is curved so as to be convex upward and rearward of the armrest 50. The lower open end portion 100B (hereinafter referred to as “bending radius regulating portion 100B”) abuts or approaches the bent portion 94B from the front side and the lower side of the armrest 50.

When the vehicle seat 12 having the above configuration is manufactured, the wire harness 94 is incorporated into the armrest 50 before the armrest 50 is attached to the seat back frame 30. Then, as shown in FIG. 12, the wire harness 94 extending from the armrest 50 is inserted into the hole 28 of the center shaft 24 and the through hole 38 of the armrest mounting bracket 36 together with the connector 98 attached to the other end portion. It is inserted. Next, as shown in FIG. 13, the harness guide 100 is attached to the tubular portion 24B of the center shaft 24. Although the seat back frame 30 is not shown in FIGS. 12 and 13, the wire harness 94 inserted through the through hole 38 of the armrest mounting bracket 36 is the through hole 34 of the left side frame 32 (FIG. 5). See also).

Further, when the wire harness 94 is inserted as described above, as shown in FIG. 14, the shaft portion 24A of the center shaft 24 has a through hole 86 of the trim 78 and a through hole 70 of the inner pad 66. , Is inserted into the bearing holes 54 and 56 of the armrest frame 52 and the through holes 76 of the center pad 74. After that, as shown in FIG. 15, the bolt 88 is screwed into the screw hole 26 of the shaft portion 24A, and the cap 90 is fitted into the through hole 84 of the trim 78. Note that in FIGS. 14 and 15, the wire harness 94 and the seat back frame 30 are not shown.

Here, in the present embodiment, when the armrest 50 attached to the seat back 16 is located at the used position, as shown in FIGS. 16 and 17, the extra length portion 94A of the wire harness 94 is the center shaft 24. The tubular portion 24B and the harness guide 100 are arranged apart from each other on the lower side of the armrest 50. Then, when the armrest 50 is rotated from the used position to the retracted position, as shown in FIG. 18, the extra length portion 94A is deformed so as to approach the tubular portion 24B and the harness guide 100, and the harness guide 100 It is configured to wrap around the outer peripheral surface.

The extra length accommodating chamber 68 in which the extra extra length portion 94A is accommodated is set so that the dimension in the seat width direction is the same as the diameter of the wire harness 94, and the deformation direction of the extra length portion 94A is the diameter of the center shaft 24. It regulates in the direction. That is, the extra length portion accommodating chamber 68 is configured to prevent or suppress the extra length portion 94A from being deformed in the axial direction of the center shaft 24. Further, as shown in FIG. 18, when the armrest 50 is located at the retracted position, the bending angle of the bent portion 94B is larger than when the armrest 50 is located at the used position. Then, by engaging the bending radius regulating portion 100B of the harness guide 100 with the bending portion 94B, the bending radius of the bending portion 94B is prevented from becoming less than a preset radius. ..

(Action and effect)
Next, the operation and effect of this embodiment will be described.

In the present embodiment, the seat back 16 and the armrest 50 are connected to each other via the center shaft 24 so as to be relatively rotatable. Then, the wire harness 94 is arranged from the inside of the seat back 16 to the inside of the armrest 50 along the axis of the center shaft 24. The wire harness 94 has an extra length portion 94A extending in the circumferential direction of the center shaft 24 around the center shaft 24, and the extra length portion 94A is deformed by the relative rotation described above. As a result, the wire harness 94 can be prevented or suppressed from being repeatedly twisted by the relative rotation, so that the wire harness 94 can be prevented or suppressed from being broken. That is, since the deformation of the wire harness 94 is dispersed over the entire extra length portion 94A, it is possible to prevent or suppress the bending load of the wire harness 94 from concentrating at one place. Can prevent or suppress disconnection.

Further, in the present embodiment, the armrest 50 accommodates the extra length portion 94A of the wire harness 94 in the extra length portion accommodating chamber 68 formed in the armrest 50. As a result, the appearance quality can be prevented from being impaired by the extra length portion 94A of the wire harness 94. Moreover, the direction of deformation of the extra length portion 94A is regulated by the extra length portion accommodating chamber 68. As a result, it is possible to prevent or suppress the load on the wire harness 94 due to the extra length portion 94A being deformed in an unintended direction.

Further, in the present embodiment, the shaft portion 24A of the center shaft 24 rotatably penetrates the pair of facing walls 52B and 52C of the armrest frame 52. One end of the center shaft 24 (the end on the seat back 16 side) is fixed to the seat back frame 30, and a bolt 88 is attached (screwed) to the other end of the center shaft 24. The center shaft 24 is retained from the pair of facing walls 52B and 52C by the bolt 88. The bolt 88 can be attached to and detached from the other end of the center shaft 24 from the side opposite to the seat back 16. Therefore, when the armrest 50 is attached to the seat back 16, the center shaft 24 fixed to the seat back 16 is passed through the pair of facing walls 52B and 52C, and the other end of the center shaft 24. The bolt 88 can be mounted from the side opposite to the seat back 16. This facilitates the work of assembling the armrest 50 to the seat back 16.

That is, in the wire harness wiring structure described in the background technology column, only the inner wall portion in the seat width direction of the skeleton member of the armrest is supported by the shaft, so that the work of assembling the armrest to the seat back is complicated. However, this can be avoided in the present embodiment.

Further, in the present embodiment, the center shaft 24 connecting the seat back 16 and the armrest 50 faces the extra length portion 94A of the wire harness 94 in the radial direction of the center shaft 24 and the seat back 16 side is opened. A tubular portion 24B having a tubular shape is provided. Then, the portion of the wire harness 94 on the seat back 16 side of the extra length portion 94A is inserted into the tubular portion 24B through the hole 28 formed in the peripheral wall 24B1 of the tubular portion 24B and is distributed to the seat back 16 side. Has been done. This facilitates the wiring of the wire harness 94 around the center shaft 24.

Further, in the present embodiment, the wire harness 94 has a bent portion 94B between a portion (inner bent portion 94C) located in the tubular portion 24B of the center shaft 24 and the extra length portion 94A. The portion of the wire harness 94 between the inner bent portion 94C and the bent portion 94B is restrained by the center shaft 24 by the harness guide 100 attached to the tubular portion 24B. As a result, it is possible to prevent or suppress the deformation of the extra length portion 94A due to the relative rotation of the armrest 50 with respect to the seat back 16 from extending to the inner bent portion 94C. As a result, it is possible to regulate the deformation of the wire harness 94 so that it occurs only in the extra length portion 94A.

Further, in the present embodiment, the harness guide 100 is provided with a bending radius regulating portion 100B for preventing the bending radius of the bending portion 94B from becoming less than a preset radius. As a result, it is possible to prevent or suppress the wire harness 94 from being broken at the bent portion 94B.

Further, in the present embodiment, the connector 98 attached to the other end of the wire harness 94 (the end arranged in the seat back 16) can pass through the hole 28 of the center shaft 24. Therefore, before the work of inserting the wire harness 94 into the hole 28 of the center shaft 24, the connector 98 can be attached to the wire harness 94 and assembled.

Further, in the present embodiment, the center shaft 24 and the extra length accommodating chamber 68 are provided on one end side (rear end side) of the armrest 50. On the other end side of the armrest 50, an electrical component storage chamber 62 that accommodates the electrical component 92 and is separated from the extra length storage chamber by the inner pad 66 is formed, and one end of the wire harness 94 is formed in the electrical component 92. It is connected. The wire harness 94 extends into the extra length accommodating chamber 68 through the harness insertion hole 71 formed in the inner pad 66 on the other end side (front end side; electrical component 92 side) of the armrest 50 with respect to the center shaft 24. ing. As a result, the wiring path of the wire harness 94 in the armrest 50 can be shortened.
<Supplementary explanation of the embodiment>

In the above embodiment, the harness insertion hole 71 is formed on the front end side (the other end side) of the armrest 50 with respect to the center shaft 24 (shaft), but the harness insertion hole 71 is not limited to this. The armrest 50 may be formed on the rear end side, the upper end side, or the lower end side with respect to the center shaft 24.

Further, in the above embodiment, the connector 98 attached to the wire harness 94 is configured to be able to pass through the hole 28 of the center shaft 24, but the present invention is not limited to this, and the connector 98 is not allowed to pass through the hole 28. The configuration may be changed.

Further, in the above-described embodiment, the harness guide 100 as a deformation restricting member attached to the tubular portion 24B of the center shaft 24 is configured to include the bending deformation regulating portion 100B, but the present invention is not limited to this. The configuration may be such that the portion 100B is omitted, or the harness guide 100 may be omitted.

Further, in the above-described embodiment, the wire harness 94 is passed through the inside of the tubular portion 24B of the center shaft 24 (shaft), but the present invention is not limited to this. That is, for example, the wire harness 94 may be locked to the outer peripheral surface of the shaft formed in a cylindrical or cylindrical shape by using a binding tool or the like.

Further, in the above embodiment, both the pair of facing walls 52B and 52C of the armrest frame 52 are supported by the center shaft 24 (shaft), but the present invention is not limited to this, and only one facing wall 52C is centered. It may be configured to be supported by the shaft 24. Further, in the present embodiment, the bolt 88 (retaining member) is screwed into the screw hole 26 formed at the tip end portion (the other end portion of the shaft) of the shaft portion 24A of the center shaft 24 (shaft). However, the retaining member may be an E-ring or the like.

Further, the embodiment can also be regarded as an embodiment of the invention of a vehicle seat having a configuration in which a wire harness is arranged from the inside of the seat back to the inside of the armrest.

Further, in the above embodiment, the case where the seat back 16 is the first vehicle interior product and the armrest 50 is the second vehicle interior product has been described, but the present invention is not limited to this, and the first vehicle interior product and the second vehicle are not limited to this. The interior parts may be provided in the vehicle interior and are connected to each other so as to be relatively rotatable.

In addition, the present invention can be implemented with various modifications without departing from the gist thereof. Further, it goes without saying that the scope of rights of the present invention is not limited to the above-described embodiment.

10 Wire harness wiring structure 12 Vehicle seat 16 Seat back (1st vehicle interior)
24 Center shaft (axis)
24B tubular part 24B1 peripheral wall 28 holes 50 armrests (second vehicle interior parts)
52 Armrest frame (skeleton member)
52B, 52C Opposing wall 62 Electrical equipment storage room 66 Inner pad (partition)
68 Extra length storage chamber 71 Harness insertion hole 88 Bolt (retaining member)
92 Electrical components 94 Wire harness 94A Extra length part 94B Bending part 94C Inner bending part (part located in the tubular part)
98 Connector 100 Harness guide (deformation control member)
100B bending radius regulation part

Claims (9)

The first vehicle interior and the second vehicle interior, which are rotatably connected to each other via a shaft,
It is arranged from the inside of the first vehicle interior product to the inside of the second vehicle interior product along the axis of the shaft, and has an extra length portion extending in the circumferential direction of the shaft around the shaft. A wire harness whose extra length is deformed by the relative rotation,
Wire harness wiring structure with. The wire harness wiring structure according to claim 1, wherein the first vehicle interior product is a seat back of a vehicle seat, and the second vehicle interior product is an armrest of the vehicle seat. The wire according to claim 1 or 2, wherein the second vehicle interior product is formed with an extra length accommodating chamber for accommodating the extra length portion and regulating the direction of the deformation of the extra length portion. Harness wiring structure. The second vehicle interior product is configured to include a skeleton member having a pair of facing walls facing each other in the axial direction of the shaft.
The shaft rotatably penetrates the pair of facing walls, one end thereof is fixed to the first vehicle interior product, and a retaining member attached to the other end prevents the shaft from being pulled out from the pair of facing walls. Has been done,
The wire harness wiring structure according to any one of claims 1 to 3, wherein the retaining member can be attached to and detached from the other end portion from the side opposite to the first vehicle interior product. The shaft has a tubular portion having a tubular shape that faces the extra length portion in the radial direction of the shaft and has an opening on the side of the first vehicle interior product.
The portion of the wire harness on the side of the first vehicle interior product with respect to the extra length portion is inserted into the tubular portion through a hole formed in the peripheral wall of the tubular portion and arranged on the side of the first vehicle interior product. The wire harness wiring structure according to any one of claims 1 to 4. The wire harness has a bent portion between a portion located in the tubular portion and the extra length portion, and a portion between the portion located in the tubular portion and the bent portion has a tubular shape. The wire harness wiring structure according to claim 5, wherein the shaft is restrained by a deformation regulating member attached to the portion. The wire harness wiring structure according to claim 6, wherein the deformation restricting member has a bending radius regulating portion for preventing the bending radius of the bending portion from becoming less than a preset radius. According to any one of claims 5 to 7, a connector is attached to the end of the wire harness on the side of the interior component of the first vehicle, and the connector can pass through the hole. The described wire harness routing structure. The shaft and the extra length accommodating chamber are provided on one end side of the second vehicle interior product.
On the other end side of the second vehicle interior component, an electrical component accommodating chamber for accommodating the electrical component and being partitioned from the extra length accommodating chamber by the partition portion is formed.
The wire harness is connected to the electrical equipment, the claims extend through the harness insertion hole formed in the partition portion at the other end to the extra length portion accommodating chamber from shaft 3 or The wire harness wiring structure according to any one of claims 4 to 8, which cites claim 3.

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