JP7350453B2 - Harness arrangement structure and vehicle seat - Google Patents

Description

The present invention relates to a harness arrangement structure and a vehicle seat using the same.

A wire harness (hereinafter also referred to as a harness) provided on a vehicle seat may be fixed to a seat back frame, a seat cushion frame, or the like of the vehicle seat with a clip, tie wrap, or the like. The arrangement structure of a type of harness in which the wire harness is fixed with a clip is described in, for example, Japanese Patent Application Publication No. 2019-51842.

JP2019-51842A

The harness was fixed to the wire frame (spring frame) of the seat cushion frame using a clip, but it was necessary to pass the harness inside the trim cover. Therefore, it takes a long time to assemble the vehicle seat, and the efficiency of the vehicle seat assembly may be reduced.

An object of the present invention is to provide a harness arrangement technique that can improve work efficiency in assembling a vehicle seat.

Other objects and novel features will become apparent from the description of this specification and the accompanying drawings.

A brief overview of typical aspects of the present invention is as follows.

That is, it includes a trim cover , a first fixing member attached to the trim cover , and a harness. The first fixing member includes a first attachment part attached to the trim cover with a suture thread, and a first curved part into which the harness is fitted in a cross-sectional view. The first fixing member is provided with a harness arrangement technique for fixing the harness along the extending direction of the first curved portion in plan view.

According to the harness arrangement technique described above, it is possible to improve the work efficiency of assembling a vehicle seat.

FIG. 1 is a perspective view showing a vehicle seat according to an embodiment. FIG. 2 is a perspective view partially showing the seat frame of the vehicle seat shown in FIG. 1. FIG. FIG. 3 is a plan view illustrating the arrangement structure of the wire harness. FIG. 4 is a diagram showing a cross-sectional view of the wire harness and the fixing member taken along line AA in FIG. 3. FIG. 5 is a plan view illustrating the arrangement structure of a wire harness according to a comparative example. FIG. 6 is a conceptual plan view illustrating the arrangement structure of the wire harness according to the embodiment.

Embodiments of the present invention will be described below with reference to the drawings.

The disclosure is merely an example, and the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual embodiment in order to make the explanation clearer. It does not limit interpretation. In addition, in this specification and each figure, the same elements as those described above with respect to the previously shown figures are denoted by the same reference numerals, and detailed explanations may be omitted as appropriate. In addition, in the drawings, the front arrow indicates the front of the vehicle, the back arrow indicates the rear of the vehicle, the left arrow indicates the left side of the vehicle, the right arrow indicates the right side of the vehicle, and the top arrow indicates the top of the vehicle. The lower part of the arrow indicates the lower part of the vehicle. In addition, in the following explanation, unless otherwise specified, front, rear, top, bottom, left, and right mean the front, rear, top, bottom, left, and right of the vehicle. .

FIG. 1 is a perspective view showing a vehicle seat according to an embodiment. As shown in FIG. 1, a vehicle seat 1 includes a seat cushion 2, a seat back 3 tiltably attached to the seat cushion 2, a headrest 4 attached to the upper side of the seat back 3, and a seat cushion 2. A pair of left and right seat rails 5 are attached to the lower side of the seat rail. The seat cushion 2 constitutes a seat surface, and the seat back 3 constitutes a backrest. The vehicle seat 1 has a reclining mechanism that allows angle adjustment between the seat cushion 2 and the seat back 3, and the seat cushion 2 and the seat back 3 are connected by the reclining mechanism. The seat rail 5 supports the seat cushion 2 so as to be slidable in the front-rear direction.

FIG. 2 is a perspective view partially showing the seat frame of the vehicle seat shown in FIG. 1. FIG. The seat frame 1F of the vehicle seat includes a seat cushion frame 50 and a seat back frame 70.

The seat cushion frame 50 includes a pair of left and right cushion side frames 55, a front panel frame 53 provided between the upper front end portions of the pair of left and right cushion side frames 55, and a rear end portion of the pair of left and right cushion side frames 55. It includes a rear pipe frame 54 provided between the rear pipe frame 54 and a wire frame 51 provided between the rear pipe frame 54 and the front panel frame 53. A pair of left and right seat rails 5 are provided below the pair of left and right cushion side frames 55.

The seat back frame 70 includes a pair of left and right back side frames 71 and a rectangular main pipe frame 72. The left and right sides of the backside frame 71 are attached to the backside frame 71.

FIG. 3 is a plan view illustrating the arrangement structure of the wire harness. FIG. 4 is a diagram showing a cross-sectional view of the wire harness and the fixing member taken along line AA in FIG. 3.

FIG. 3 shows a state in which a plurality of wire harnesses (hereinafter also referred to as harnesses) WH are arranged using a plurality of fixing members 30 to 37. FIG. 3 also shows three wire harnesses 10, 11, and 12 as an example of a plurality of wire harnesses (hereinafter also referred to as harnesses) WH. The harnesses 10, 11, and 12 are arranged by a plurality of fixing members 30 to 37 fixed to the rear surface of the trim cover 20. That is, the wiring route of each harness 10, 11, 12 is determined based on the plurality of fixing members 30 to 37 in plan view. A connector (not shown) is attached to each end of each harness 10, 11, 12. The trim cover 20 is attached to the back side of the seat cushion 2 so as to cover the back side of the seat cushion 2.

FIG. 4 shows, as a representative example, a sectional view of the fixing member 33 to which the harness 11 is attached. In one example, the fixing member 33 can be configured using a J-shaped hook made of resin. The fixing member 33 includes a mounting portion 33a and a curved portion 33b in a cross-sectional view. One end of the attachment portion 33a is sewn to the trim cover 20 at a suture line 40 using a suture thread. The harness 11 is fitted into the space inside the curved portion 33b. The harness 11 includes a tubular or hose-shaped protective cover 110 made of resin, and a harness main body 111 housed inside the protective cover 110. The harness main body 111 is composed of one or more metal wires and a resin covering material that covers each of the metal wires. The fixing members 30 to 32 and 34 to 37 also fix corresponding harnesses in the same manner as the fixing member 33 shown in FIG. 4.

As shown in FIG. 3, the first harness 10 is attached to three fixing members 30, 31, and 32. Each of the fixing members 30, 31, and 32 has a rectangular shape. The longitudinal direction of the fixing member 30 is provided along the second direction Y orthogonal to the first direction X. The fixing member 30 fixes the first harness 10 along the second direction Y. The longitudinal direction of the fixing member 31 is provided along an oblique direction that is different from the second direction Y. The fixing part 31 fixes the first harness 10 along a direction obliquely inclined with respect to the second direction Y. The longitudinal direction of the fixing member 32 is provided along the second direction Y. The fixing member 32 fixes the first harness 10 along the second direction Y.

The second harness 11 is attached to fixing members 33, 34, and 35. Each of the fixing members 33, 34, and 35 has a rectangular shape. The longitudinal direction of the fixing members 33 and 35 is provided along the second direction Y. The fixing members 33 and 35 fix the second harness 11 along the second direction Y. On the other hand, the longitudinal direction of the fixing member 34 is provided along the first direction X. The fixing member 34 fixes the second harness 11 along the first direction X.

The third harness 12 is attached to fixing members 36 and 37. Each of the fixing members 36 and 37 has a rectangular shape. The longitudinal direction of the fixing members 36 and 37 is provided along the second direction Y. The fixing members 36 and 37 fix the third harness 12 along the second direction Y.

As shown in FIG. 3, a plurality of fixing members (30-32, 33-35, or 36-37) can be installed for one harness (10, 11, or 12). Further, the fixing members 30 to 37 are tilted diagonally with respect to the second direction Y (in this example, the vertical direction), the first direction X (in this example, the lateral direction), the second direction Y, or the first direction It can be installed freely in any direction.

In other words, when sewing the fixing members 30 to 37 to the trim cover 20, the direction in which the harness is fixed in the fixing members 30 to 37 (in the example of FIG. 3, the longitudinal direction of the fixing members 30 to 37, the direction of the suture line 40, , or the extending direction of the curved portion 33b), the arrangement positions and arrangement directions of the harnesses 10, 11, and 12 can be relatively freely set. In other words, the desired arrangement positions and arrangement directions of the harnesses 10, 11, and 12 are determined, and the harnesses are fixed in the fixing members 30 to 37 so as to correspond to the desired arrangement positions and arrangement directions of the harnesses 10, 11, and 12. The direction (the longitudinal direction of the fixing members 30 to 37, the direction of the suture line 40, or the extending direction of the curved portion 33b) is determined, and the fixing members 30 to 37 are sewn to the trim cover 20.

The plurality of wire harnesses WH provided in the vehicle seat 1 include, for example, an airbag harness, an electric headrest harness, a seat back reclining adjustment harness, a lumbar support adjustment harness, and a seat cushion sliding harness. There is a harness for adjustment. The multiple wire harnesses WH further include a harness for adjusting the height of the seat cushion, a harness for adjusting the front and back inclination of the seat cushion, a harness for the seat cushion heater, a harness for the seat back heater, and a seat belt back. There are harnesses for seatbelt rewarders, harnesses for seating sensors, etc.

FIG. 5 is a plan view illustrating the arrangement structure of a wire harness according to a comparative example. FIG. 5 shows the configuration of a seat cushion frame 50r of a vehicle seat 1r according to a comparative example when viewed from the back side.

As shown in FIG. 5, for example, the harnesses 10r, 11r, and 12r are fixed to a wire frame (also referred to as a spring frame) 52r of the seat cushion frame 50r using clips 60, and the harnesses are fixed to the seat cushion frame 50r. It is fixed to the frame 52 using a clip 61. The connectors provided at one ends of the harnesses 10r, 11r, and 12r are finally connected to connectors arranged on the back surface of the front panel frame 53r of the seat cushion frame 50r. Further, the harnesses 13r and 14r are fixed to the harness fixing frame 52 using clips 61.

In addition, the harness 10r is, in one example, a harness for a seat back heater, the harness 11r is, in one example, a harness for a seat cushion heater, and the harness 12r is, in one example, a harness for an air bag. . In one example, the harness 13r is a seatbelt back harness, and the harness 14r, in one example, is a harness for a seat cushion heater.

FIG. 6 is a conceptual plan view illustrating the arrangement structure of the wire harness according to the embodiment. FIG. 6 shows the configuration of the seat cushion frame 50 of the vehicle seat 1 of FIG. 1 when viewed from the back side. Further, in FIG. 6, the harness 10r-14r in FIG. 5 is shown as a harness 10-14 for comparison with FIG.

In FIG. 6, as explained in FIG. 3, the fixing members 30 to 39 are sewn to the back surface of the trim cover 20 at a suture line 40 (not shown) using a suture thread.

The harness 10 is attached to fixing members 30, 31, and 32. The harness 11 is attached to fixing members 33, 34, and 35. The harness 12 is attached to fixing members 36 and 37. The harness 13 is attached to a fixing member 38. Further, the harness 14 is attached to a fixing member 39. The arrangement position and arrangement direction of the harness 10-14 are determined by the fixing members 30 to 39 as in FIG. 3. Note that, as shown in FIG. 6, the trim cover 20 is partially provided so as to cover a necessary portion of the back side of the seat cushion frame 50, but the trim cover 20 is not limited thereto. The trim cover 20 may be provided so as to cover the entire back side of the seat cushion frame 50.

Here, since the harness 10-14 shown in FIG. 6 is attached to the fixing members 30 to 39, the plurality of clips 60, 61 and the harness fixing frame 52 shown in FIG. 5 are unnecessary.

Therefore, it is not necessary to provide the harness fixing frame 52 shown in FIG. 5 in the seat cushion 2 according to the embodiment. Thereby, the seat cushion 2 according to the example can be lighter in weight than the seat cushion frame 50r of the vehicle seat according to the comparative example, since the harness fixing frame 52 is not provided.

Depending on the embodiment, one or more of the following effects can be obtained.

1) The flexibility of the harness fixing location can be improved. Further, the harness does not need to be passed through the trim cover, and the work efficiency of the vehicle seat assembly work can be improved.

2) Since the harness fixing member uses a J-shaped hook instead of a clip, it is possible to reduce costs.

3) To arrange the harness, it is sufficient to attach one or more fixing members consisting of J-shaped hooks only to necessary locations on the back surface of the trim cover, and it is also possible to provide directionality of the harness.

Above, the invention made by the present inventor has been specifically explained based on examples, but it goes without saying that the present invention is not limited to the above embodiments and examples, and can be modified in various ways. .

1: Vehicle seat 2: Seat cushion 3: Seat back WH, 10, 11, 12, 13, 14: Wire harness 20: Trim cover 30 to 39: Multiple fixing members (J-shaped hooks)
33a: J-shaped hook attachment part 33b: J-shaped hook curved part 40: Suture line 50: Seat cushion frame 51: Wire frame 53: Front panel frame 54: Rear pipe frame 55: Cushion side frame 70: Seat back frame 71 : Back side frame 72: Main pipe frame 110: Protective cover 111: Harness body

Claims (12)

a trim cover provided to cover the back surface of the seat cushion, having a front surface and a back surface, and configured such that the back surface faces the seat cushion;
a first fixing member attached to the back surface of the trim cover;
including a harness;
The first fixing member is
a first attachment part attached to the back surface of the trim cover with a suture;
In a cross-sectional view, a first curved portion into which the harness is fitted;
The first fixing member has a rectangular shape in a plan view, the longitudinal direction of the first fixing member is the extending direction of the first curved portion, and the fix the harness,
Harness arrangement structure. The harness arrangement structure according to claim 1,
A harness arrangement structure in which the first fixing member includes a J-shaped hook. The harness arrangement structure according to claim 1, further comprising:
a second fixing member attached to the back surface of the trim cover;
The second fixing member is
a second attachment portion attached to the trim cover with a suture;
In a cross-sectional view, a second curved portion into which the harness is fitted;
The second fixing member has a rectangular shape in plan view, the longitudinal direction of the second fixing member is the extending direction of the second curved part, and along the extending direction of the second curved part, fixing the harness;
The first curved portion of the first fixing member fixes the harness along a second direction that is a left-right direction of the seat cushion orthogonal to a first direction that is the front-back direction of the seat cushion,
The second curved portion of the second fixing member fixes the harness along the second direction or a direction different from the second direction. The harness arrangement structure according to claim 3,
The second fixing member is a harness arrangement structure including a J-shaped hook. The harness arrangement structure according to claim 3,
A harness arrangement structure, wherein the direction different from the second direction is the first direction. The harness arrangement structure according to claim 3,
A harness arrangement structure, wherein the direction different from the second direction is a direction obliquely inclined with respect to the second direction. seat cushion and
a seat back tiltably attached to the seat cushion;
including a harness;
The seat cushion is
a trim cover provided to cover the back surface of the seat cushion, having a front surface and a back surface, and with the back surface facing the seat cushion ;
a first fixing member attached to the back surface of the trim cover;
The first fixing member is
a first attachment part attached to the back surface of the trim cover with a suture;
In a cross-sectional view, a first curved portion into which the harness is fitted;
The first fixing member has a rectangular shape in plan view, the longitudinal direction of the first fixing member is the extending direction of the first curved part, and along the extending direction of the first curved part, A vehicle seat to which the harness is fixed. The vehicle seat according to claim 7,
a second fixing member attached to the back surface of the trim cover;
The second fixing member is
a second attachment part attached to the back surface of the trim cover with a suture;
In a cross-sectional view, a second curved part into which the harness is fitted,
The second fixing member has a rectangular shape in plan view, the longitudinal direction of the second fixing member is the extending direction of the second curved part, and along the extending direction of the second curved part, A vehicle seat to which the harness is fixed. The vehicle seat according to claim 8,
The first curved portion of the first fixing member fixes the harness along a second direction that is a left-right direction of the seat cushion orthogonal to a first direction that is the front-back direction of the seat cushion,
In the vehicle seat, the second curved portion of the second fixing member fixes the harness along the second direction or a direction different from the second direction. The vehicle seat according to claim 9,
A vehicle seat, wherein the direction different from the second direction is the first direction. The vehicle seat according to claim 9,
A vehicle seat, wherein the direction different from the second direction is a direction obliquely inclined with respect to the second direction. The vehicle seat according to claim 8,
The vehicle seat, wherein the first fixing member and the second fixing member include a J-shaped hook.

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