Harness wiring structure and vehicle seat

Abstract

To easily prevent disconnection of a harness wired to a vehicle body side from a seat cushion capable of being flipped up to a seat back side.SOLUTION: In a harness wiring structure, a hinge part 38A provided on a rear end of a seat cushion frame is connected to a hinge bracket fixed to a floor part of a vehicle body, and a seat cushion is supported so as to be capable of being flipped up to a seat back side. A resin cover 58R covering the hinge part 38A has a plurality of engagement claws 76 on an edge part on the rear side of the seat cushion, and an excess length part 78 of the harness wired to the vehicle body side from the seat cushion is engage with the plurality of engagement claws 76.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a harness routing structure for a seat cushion. [Background technology]

[0002] The following Patent Document 1 discloses a folding seat in which the seat cushion can be flipped up toward the seat back. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-210009 A Summary of the Invention [Problem to be solved by the invention]

[0004] In some cases, a harness for a seating sensor is routed from the seat cushion to the vehicle body. If the seat cushion can be flipped up, measures must be taken to prevent the harness from breaking.

[0005] SUMMARY OF THE PRESENT INVETION The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a harness routing structure and a vehicle seat that are easy to prevent disconnection of a harness routed from a seat cushion that can be flipped up toward the seat back side to the vehicle body side. [Means for solving the problem]

[0006] The harness routing structure of the first embodiment is a harness routing structure applied to a vehicle seat in which a hinge portion provided at the rear end of a seat cushion frame is connected to a hinge bracket fixed to the floor portion of the vehicle body, and the seat cushion can be flipped up toward the seat back, and includes a resin cover that covers the hinge portion and has a harness locking portion on the rear edge portion of the seat cushion, and a harness that is routed from the seat cushion to the vehicle body side and has a portion locked to the harness locking portion.

[0007] In the harness routing structure of the first aspect, a hinge portion provided at the rear end of the seat cushion frame is connected to a hinge bracket fixed to the floor of the vehicle body, and the seat cushion is supported so as to be able to be flipped up toward the seat back. A resin cover placed over the hinge portion has a harness locking portion at the rear edge of the seat cushion, and a part of the harness routed from the seat cushion to the vehicle body is locked to the harness locking portion. This allows the harness to deform as designed when the seat cushion is flipped up, making it easier to prevent the harness from breaking.

[0008] The second aspect of the harness routing structure is the first aspect, in which the harness has an excess portion bent in a U-shape toward the upper side of the seat cushion, and the excess portion is engaged with the harness engaging portion.

[0009] In the harness arrangement structure of the second aspect, the excess length of the harness arranged from the seat cushion to the vehicle body is locked to a harness locking portion of a resin cover that covers a hinge portion of a seat cushion frame. When the seat cushion is flipped up, the excess length can be deformed as designed, which makes it easier to prevent the harness from breaking.

[0010] A third aspect of the harness routing structure is the second aspect, wherein the harness locking portion has a plurality of locking claws aligned in the vertical direction of the seat cushion and staggered in the left-right direction of the seat cushion, and the excess portion is locked to the plurality of locking claws.

[0011] In the harness routing structure of the third aspect, the excess length of the harness is engaged with a plurality of engagement claws provided on the resin cover. The plurality of engagement claws are arranged in a line in the vertical direction of the seat cushion and are arranged alternately in the left-right direction of the seat cushion, so that the engagement of the excess length is completed by inserting the excess length between the alternately arranged engagement claws. This makes it easy to engage the excess length.

[0012] The vehicle seat of the fourth aspect comprises a seat cushion on which an occupant sits, a seat back that supports the back of the occupant, and a hinge bracket that supports the seat cushion so that it can be flipped up toward the seat back, and a harness arrangement structure of any one of the first to third aspects is applied.

[0013] In the vehicle seat of the fourth aspect, the seat cushion on which the occupant sits can be flipped up toward the seat back that supports the occupant's back. Since the harness arrangement structure of any one of the first to third aspects is applied to this vehicle seat, the above-mentioned effects can be obtained. Effect of the Invention

[0014] As described above, according to the present invention, it is easy to prevent disconnection of the harness routed from the seat cushion that can be flipped up toward the seat back side to the vehicle body side. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment; [Diagram 2] 2 is a perspective view showing a state in which a hinge cover is removed from the configuration shown in FIG. 1. [Diagram 3] 1 is a perspective view showing a frame of a vehicle seat according to an embodiment; [Figure 4] FIG. 2 is a perspective view showing a portion of a frame of the vehicle seat according to the embodiment. [Diagram 5]FIG. 5 is a perspective view showing a part of the configuration shown in FIG. [Figure 6] 6 is a perspective view showing a state in which a hinge bracket is removed from the configuration shown in FIG. 5. FIG. [Figure 7] 7 is a perspective view showing a state in which a resin cover is removed from the configuration shown in FIG. 6. FIG. [Figure 8] 7 is a perspective view showing a state in which a hinge portion of a seat cushion frame is removed from the configuration shown in FIG. 6. FIG. [Figure 9] FIG. 4 is a perspective view showing a resin cover and a part of a harness. [Figure 10] FIG. [Figure 11] 7 is a side view of the configuration shown in FIG. 6 as viewed from the right side of the seat. [Figure 12] 12 is a side view corresponding to FIG. 11, illustrating a state in which a hinge portion of a seat cushion frame is flipped up. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a vehicle seat 10 according to one embodiment of the present invention will be described with reference to Figs. 1 to 12. In each drawing, some reference numerals may be omitted in order to make the drawings easier to see. Arrows FR, LH, and UP, which are appropriately written in each drawing, respectively indicate the front, left, and top of the vehicle seat 10. Hereinafter, when the front-rear, left-right, top-bottom directions are used in the description, they are taken to indicate directions relative to the vehicle seat 10.

[0017] 1 and 2, a vehicle seat 10 according to this embodiment is a rear seat for seating three people, and includes a seat cushion 12, a seat back 14, and two headrests 16. As an example, the seat cushion 12 is divided into a right seat cushion 12R for seating two people and a left seat cushion 12L for seating one person.

[0018] The seat cushion 12 has a seat cushion frame 18 (see Figures 3 and 4) that forms its skeleton, a seat cushion pad (not shown) that is a cushioning material supported by the seat cushion frame 18, a seat cushion cover 22 (see Figures 1 and 2) that is a cover material that covers the surface of the seat cushion pad, a carpet material (not shown) that covers the underside of the seat cushion pad, and three harnesses 26R, 26S, 26L (see Figures 3 and 4) that are arranged between the seat cushion pad and the carpet material.

[0019] The seat back 14 has a seat back frame 30 (see FIG. 3) constituting the skeleton thereof, a seat back pad (see FIG. 1 and FIG. 2) supported by the seat back frame 30, and a seat back skin 32 (see FIG. 1 and FIG. 2) covering the surface of the seat back pad. The head rest 16 has a head rest frame 34 (see FIG. 3) constituting the skeleton thereof, a head rest pad (not shown) supported by the head rest frame 34, and a head rest skin 36 (see FIG. 1 and FIG. 2) covering the surface of the head rest pad.

[0020] The seat cushion frame 18 is divided into a right cushion frame 18R constituting the framework of the right seat cushion 12R and a left cushion frame 18L constituting the framework of the left seat cushion 12L. The seat cushion pad is divided into a right cushion pad (not shown) constituting the cushion material of the right seat cushion 12R and a left cushion pad (not shown) constituting the cushion material of the left seat cushion 12L. The seat cushion skin 22 is divided into a right cushion skin 22R constituting the skin material of the right seat cushion 12R and a left cushion skin 22L constituting the skin material of the left seat cushion 12L. Similarly, the carpet material is divided into a right carpet material (not shown) covering the lower surface of the right cushion pad and a left carpet material (not shown) covering the lower surface of the left cushion pad.

[0021] 3 and 4, the right cushion frame 18R has a frame-shaped frame main body 38 and a plurality of wire frames 42 fixed to the frame main body 38. The left cushion frame 18L has a frame-shaped frame main body 40 and a plurality of wire frames 44 fixed to the frame main body 40. The frame main bodies 38, 40 are formed by, for example, joining metal pipe material or press-formed metal plate material by means of welding or the like, and form a substantially rectangular frame shape in a plan view of the seat cushion 12. The plurality of wire frames 42, 44 are formed, for example, of metal wire material, are arranged in a lattice pattern, and are fixed to the frame main bodies 38, 40 by means of welding or the like.

[0022] A pair of left and right hinge portions 38A are provided at both ends in the left-right direction (seat width direction) of the rear end of the frame main body 38. The left and right hinge portions 38A are made of press-formed metal plate material and are arranged with the left-right direction being the plate thickness direction. The left and right hinge portions 38A are approximately L-shaped when viewed in the left-right direction. Similarly, a pair of left and right hinge portions 40A are provided at both ends in the left-right direction of the rear end of the frame main body 40. The left and right hinge portions 40A are made of press-formed metal plate material and are arranged with the left-right direction being the plate thickness direction of the main portion. The left and right hinge portions 40A are approximately L-shaped when viewed in the left-right direction.

[0023] The right hinge portion 38A of the frame body 38 is connected to the floor of the vehicle body (not shown) via a right hinge bracket 46R, and the left hinge portion 38A of the frame body 38 is connected to the floor of the vehicle body via a central hinge bracket 46S. The right hinge portion 40A of the frame body 40 is connected to the floor of the vehicle body (not shown) via a central hinge bracket 46S, and the left hinge portion 40A of the frame body 40 is connected to the floor of the vehicle body via a left hinge bracket 46L. The right hinge bracket 46R, the central hinge bracket 46S, and the left hinge bracket 46L are made of, for example, press-formed metal plate material, and are arranged with the plate thickness direction of the main parts being in the left-right direction.

[0024] The right hinge bracket 46R is disposed at the right end of the vehicle seat 10, the central hinge bracket 46S is disposed at the center of the vehicle seat 10 in the left-right direction, and the left hinge bracket 46L is disposed at the left end of the vehicle seat 10. The right hinge bracket 46R, the central hinge bracket 46S, and the left hinge bracket 46L are fixed to a floor of the vehicle body (not shown) by means of bolt fastening or the like. The right hinge bracket 46R and the left hinge bracket 46L correspond to the "hinge bracket" in the present invention. The right hinge bracket 46R and the left hinge bracket 46L are covered from the outside in the left-right direction by a resin hinge cover 54 (see FIG. 1).

[0025] The upper portions of the left and right hinge portions 38A of the frame body 38 are rotatably connected to the right hinge bracket 46R and the central hinge bracket 46S via connecting shafts 48R and 48S whose axial direction is the left-right direction. The upper ends of the left and right hinge portions 40A of the frame body 40 are rotatably connected to the left hinge bracket 46L and the central hinge bracket 46S via connecting shafts 48L and 48S whose axial direction is the left-right direction. As a result, the frame bodies 38 and 40 can be flipped up toward the seat back 14 with the rear end as the center, and the right seat cushion 12R and the left seat cushion 12L are supported by the right hinge bracket 46R, the central hinge bracket 46S, and the left hinge bracket 46L so as to be flipped up toward the seat back 14.

[0026] A plurality of rubber cushion members 50 (see FIGS. 3 and 4) that come into contact with the floor of the vehicle body when the right seat cushion 12R and the left seat cushion 12L are in a non-flip-up state (as shown in FIGS. 1 and 2) are attached to the front ends of the frame bodies 38, 40. When the right seat cushion 12R and the left seat cushion 12L are in a non-flip-up state, the front-rear, left-right, up-down and front-rear, left-right, up-down directions of the right seat cushion 12R and the left seat cushion 12L coincide with the front-rear, left-right, up-down and front-rear directions of the vehicle seat 10.

[0027] The frame body 38 of the right cushion frame 18R is mostly embedded in the right cushion pad, and the multiple wire frames 42 of the right cushion frame 18R are mostly exposed on the underside of the right cushion pad. The right cushion pad is made of a foam that is foam-molded integrally with the right cushion frame 18R. The multiple wire frames 42 are covered from the lower side of the seat cushion 12 by the right carpet material that covers the underside of the right cushion pad.

[0028] Similarly, the frame body 40 of the left cushion frame 18L is mostly embedded in the left cushion pad, and the wire frames 44 of the left cushion frame 18L are mostly exposed on the underside of the left cushion pad. The left cushion pad is made of a foam that is foam-molded integrally with the left cushion frame 18L. The wire frames 44 are covered from the lower side of the seat cushion 12 by the left carpet material that covers the underside of the left cushion pad.

[0029] Two harnesses 26R, 26S are arranged between the right cushion pad and the right carpet material, and one harness 26L is arranged between the left cushion pad and the left carpet material. The two harnesses 26R, 26S are electrically connected to two seating sensors 52R, 52S (see Figs. 3 and 4) arranged on the right seat cushion 12R, and the one harness 26L is electrically connected to one seating sensor 52L (see Figs. 3 and 4) arranged on the left seat cushion 12L.

[0030] The seating sensors 52R, 52S, 52L are, for example, pressure sensors embedded in the right and left cushion pads. These seating sensors 52R, 52S, 52L detect whether or not an occupant is seated on the left and right seat cushions 12L, 12R. These seating sensors 52R, 52S, 52L form part of a seat belt reminder that reminds the occupants seated on the left and right seat cushions 12L, 12R to fasten their seat belts.

[0031] The two harnesses 26R, 26S are inserted into a corrugated tube 56R at the right side of the right seat cushion 12R, and the one harness 26L is inserted into a corrugated tube 56L at the left side of the left seat cushion 12L. Parts of the two harnesses 26R, 26S inserted into the corrugated tube 56R are engaged with a resin cover 58R that covers the right hinge portion 38A of the right cushion frame 18R, and part of the one harness 26L inserted into the corrugated tube 56L is engaged with a resin cover 58L that covers the left hinge portion 40A of the left cushion frame 18L. These resin covers 58R, 58L are manufactured by, for example, injection molding of resin.

[0032] The resin cover 58R, together with the harnesses 26R and 26S, constitutes the harness routing structure 60R according to the embodiment of the present invention, and the resin cover 58L, together with the harness 26L, constitutes the harness routing structure 60L according to the embodiment of the present invention. The harness routing structures 60R and 60L are configured substantially symmetrically, so hereinafter, the right-side harness routing structure 60R will be described with reference to Figs. 5 to 12, and a description of the left-side harness routing structure 60L will be omitted. In addition, when the following description is given simply using the front-rear, left-right, top-bottom directions, these directions are intended to indicate the directions when the right-side seat cushion 12R is in the non-flip-up position, unless otherwise specified.

[0033] 9 and 10, the resin cover 58R has a right wall 62 covering the hinge portion 38A from the right side, a left wall 64 covering the hinge portion 38A from the left side, a front wall 66 covering the hinge portion 38A from the front side, an upper wall 68 covering the hinge portion 38A from above, and a rear wall 70 covering the hinge portion 38A from the rear side. The right wall 62 and the left wall 64 are connected together by the front wall 66, the upper wall 68, and the rear wall 70.

[0034] The upper wall 68 has an arc shape that protrudes upward when viewed in the left-right direction. Extensions 64A, 66A, 70A extending to the left are formed in the lower parts of the left wall 64, the front wall 66, and the rear wall 70. Openings 72, 74 penetrating in the left-right direction are formed in the upper parts of the right wall 62 and the left wall 64. A slit 74 extending from the lower end of the opening 72 to the lower end of the right wall 62 is formed in the right wall 62.

[0035] 6 and 7, the hinge portion 38A has a hinge body portion 38A1 covered with the resin cover 58R, and a front extension portion 38A2 extending forward from the lower end of the hinge body portion 38A1. The upper end of the hinge body portion 38A1 bulges rightward around the connecting shaft 48R, forming a cylindrical shape with a bottom, and the bulging portion fits into the opening 72. When the resin cover 58R is placed on the hinge body portion 38A1, the resin cover 58R is elastically deformed so that the slit 74 widens.

[0036] A rear wall 70 of the resin cover 58R, i.e., the rear edge of the resin cover 58R, is provided with a plurality of locking claws 76 arranged vertically and staggered in the left-right direction. As shown in Figs. 9 and 10, the rear portion of the right locking claw 76R curves in an arc toward the left, and the rear portion of the left locking claw 76L curves in an arc toward the right. The plurality of locking claws 76 correspond to the "harness locking portion" in the present invention. A portion of the harness 26R, 26S inserted into the corrugated tube 56R is locked to the plurality of locking claws 76.

[0037] Specifically, the harnesses 26R, 26S and the corrugated tube 56R have an excess length 78 bent upward in a U-shape. The excess length 78 is disposed on the rear side of the resin cover 58R, and has a front excess length 78F and a rear excess length 78R aligned in the front-to-rear direction. The front excess length 78F is inserted between the right locking claw 76R and the left locking claw 76L, and is locked to the resin cover 58R by these locking claws 76R, 76L. Note that the harnesses 26R, 26S are not shown in Figs. 6 to 9, 11, and 12.

[0038] The harnesses 26R, 26S and the corrugated tube 56R have a front side routing portion 80 extending forward from the lower end of the front side extra length portion 78F passing below the hinge portion 38A, and a rear side routing portion 82 extending rearward and leftward from the lower end of the rear side extra length portion 78R. The front side routing portion 80 is engaged with the lower surface of the hinge portion 38A by using a plastic clip 84. The lower end of the rear side extra length portion 78R is engaged with the right side hinge bracket 46R by using a plastic clip 86. The rear side routing portion 82 is engaged with the reinforcing bracket 90 by using a plastic clip 88. In this embodiment, since the harnesses 26R, 26S are inserted into the corrugated tube 56R, the signs of the extra length portion 78, the front side routing portion 80, and the rear side routing portion 82 are attached to the corrugated tube 56R in Figs. 5 to 9, 11, and 12.

[0039] The reinforcing bracket 90 is fixed to the floor of the vehicle body together with the rear end of the right hinge bracket 46R by means of bolt fastening or the like, for example, using a press-formed metal plate material. A resin connector 92 attached to the tip of the rear wiring portion 82 is engaged with the reinforcing bracket 90. Another connector 94 is fitted to the connector 92. The connector 94 is attached to the tip of a harness (not shown) that is inserted into a corrugated tube 96 and wired from the vehicle body side, and the harness wired from the vehicle body side and the harnesses 26R and 26S are electrically connected via the connectors 92 and 94.

[0040] As shown in Fig. 11, when the hinge portion 38A, i.e., the right seat cushion 12R, is in the non-flip-up position, the front excess portion 78F and the rear excess portion 78R are disposed close to each other in the front-rear direction. As shown in Fig. 12, when the hinge portion 38A, i.e., the right seat cushion 12R, is rotated to the flip-up position, the front excess portion 78F rotates forward and upward together with the resin cover 58R, and the rear excess portion 78R is deformed.

[0041] In the harness routing structure 60R configured as described above, the hinge portion 38A provided at the rear end portion of the right cushion frame 18R is connected to the right hinge bracket 46R fixed to the floor portion of the vehicle body, and the right seat cushion 12R is supported so as to be able to be flipped up toward the seat back 14. The resin cover 58R covering the hinge portion 38A has a plurality of locking claws 76 at its rear edge portion, and the harnesses 26R, 26S routed from the right seat cushion 12R side to the vehicle body side are locked to the plurality of locking claws 76 in a state where they are inserted into the corrugated tube 56R. This allows the harnesses 26R, 26S to deform as set when the right seat cushion 12R is flipped up, making it easier to prevent the harnesses 26R, 26S from breaking.

[0042] In this embodiment, the harnesses 26R, 26S and the corrugated tube 56R have an excess length 78 bent into a U-shape toward the upper side of the right seat cushion 12R, and the excess length 78 is engaged with a plurality of engaging claws 76. When the seat cushion is flipped up, the excess length 78 can be deformed as designed, which makes it easier to prevent the harnesses 26R, 26S from breaking.

[0043] In this embodiment, the multiple locking claws 76 of the resin cover 58R are aligned in the up-down direction of the right-side seat cushion 12R and are alternately disposed in the left-right direction of the right-side seat cushion 12R, so that the locking of the excess length portion 78 is completed by inserting the excess length portion 78 between the alternately disposed locking claws 76. This makes it easy to perform the locking operation of the excess length portion 78.

[0044] In the above embodiment, the seat cushion 12 is divided into the right seat cushion 12R and the left seat cushion 12R, but the present invention is not limited to this and the seat cushion may be configured not to be divided.

[0045] In the above embodiment, the harnesses 26R, 26S and the corrugated tube 56R have the excess length 78 bent into a U-shape toward the upper side of the right seat cushion 12R, and the excess length 78 is locked by the multiple locking claws 76 of the resin cover 58R, but the present invention is not limited to this. The manner in which the harness is locked to the resin cover can be changed as appropriate depending on the wiring path of the harness, etc.

[0046] In addition, the harness locking portion is configured by a plurality of locking claws 76 arranged in a vertical direction of the right seat cushion 12R and staggered in a horizontal direction of the right seat cushion 12R, but the present invention is not limited to this. The configuration of the harness locking portion can be changed as appropriate.

[0047] In the above embodiment, the seat cushion 12 is configured with three harnesses 26R, 26S, and 26L routed therethrough, but the number of harnesses is not limited to this and can be changed as appropriate.

[0048] In addition, the present invention can be implemented in various modifications without departing from the spirit and scope of the present invention. Furthermore, the scope of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0049] 10 Vehicle seats 12 Seat cushion 12R right seat cushion 12L Left side seat cushion 14 Seat back 18 Seat cushion frame 18R Right side cushion frame 18L Left side cushion frame 26R, 26S, 26L Harness 38A, 40A Hinge part 46R Right side hinge bracket (hinge bracket) 46L Left side hinge bracket (hinge bracket) 58L resin cover 58R Resin cover 60L Harness wiring structure 60R Harness wiring structure 76 Locking claw (harness locking part) 78 Extra length

Claims

1. A harness arrangement structure applied to a vehicle seat in which a hinge portion provided at a rear end portion of a seat cushion frame is connected to a hinge bracket fixed to a floor portion of a vehicle body, and the seat cushion can be flipped up toward a seat back, a resin cover that is placed over the hinge portion and has a harness locking portion on an edge portion of the rear side of the seat cushion; a harness that is routed from the seat cushion to a vehicle body side and has a portion locked to the harness locking portion; A harness routing structure comprising:

2. 2. The harness routing structure according to claim 1, wherein the harness has an excess length portion bent in a U-shape toward an upper side of the seat cushion, the excess length portion being engaged with the harness engaging portion.

3. 3. The harness arrangement structure according to claim 2, wherein the harness locking portion has a plurality of locking claws arranged in a vertical direction of the seat cushion and staggered in a left-right direction of the seat cushion, and the excess portion is locked to the plurality of locking claws.

4. A seat cushion on which an occupant sits; A seat back that supports the back of the occupant; a hinge bracket that supports the seat cushion so that the seat cushion can be flipped up toward the seat back; Equipped with A vehicle seat to which the harness routing structure according to any one of claims 1 to 3 is applied.

Images