JP2024029985A - vehicle seat - Google Patents

Abstract

An object of the present invention is to provide a vehicle seat including a first device and a second device, which prevents increase in cost while suppressing the unruliness of each harness connected to the first device and the second device. [Solution] A vehicle seat 10 includes seat bodies 12, 14, 16, a buckle harness 30 connected to a buckle device (first device), and an SAB harness 40 connected to an SAB device (second device). , is provided. The buckle harness 30 is fixed to the seat body 12, 14, 16. Further, the SAB harness 40 is wound around the buckle harness 30. [Selection diagram] Figure 1

Description

The present invention relates to a vehicle seat.

Patent Document 1 discloses a harness routing structure for a vehicle seat.

JP 2021-146939 Publication

By the way, some vehicle seats are equipped with a side airbag device (hereinafter referred to as "SAB device") and some are not. Therefore, unlike a vehicle seat without an SAB device, a vehicle seat equipped with an SAB device requires a structure for fixing a wire harness (hereinafter simply referred to as a "harness") connected to the SAB device. Further, providing a structure for fixing a harness connected to the SAB device only to a vehicle seat equipped with the SAB device prevents commonality of parts and leads to an increase in costs.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to suppress the unruliness of each harness connected to the first device and the second device while avoiding an increase in cost in a vehicle seat equipped with a first device and a second device. do.

A vehicle seat according to a first aspect includes a seat body including a seat cushion and a seat back, a first harness connected to a first device and fixed to the seat body, and a first harness connected to a second device and connected to the first harness. and a second harness wrapped around the harness.

In this aspect, the vehicle seat includes a seat body, a first harness connected to the first device, and a second harness connected to the second device.

Here, the first harness is fixed to the seat body. Therefore, it is possible to suppress the first harness from swinging against the seat body. Moreover, the second harness is wound around the first harness. Therefore, even if the second harness is not fixed to the seat main body or the number of fixing points is small, it is possible to appropriately suppress the second harness from swinging wildly.
Therefore, according to this aspect, the structure for fixing the second harness can be omitted or reduced, and as a result, it is possible to prevent an increase in cost while suppressing the unruliness of the first harness and the second harness.

In the vehicle seat of the second aspect, in the first aspect, the second device is a device provided in a vehicle seat of a more limited type of vehicle than the first device.

In this aspect, the second device is a device provided in a vehicle seat of a more limited type of vehicle than the first device. In other words, a harness connected to a device provided in vehicle seats of relatively more car types than the second device is fixed to the seat body. Therefore, it is easy to use the structure for fixing the first harness to the seat body in a vehicle seat that includes only the first device among the first device and the second device.

The vehicle seat according to a second aspect of the first aspect further includes a storage rail for supporting an undertray arranged under the seat cushion, and a storage rail for supporting an undertray arranged under the seat cushion, and a storage rail for supporting an undertray arranged under the seat cushion. The wrapped portion passes near the storage rail.

In this aspect, the portion of the second harness that is wrapped around the first harness passes near the storage rail. Note that "nearby" here means that the shortest distance between the storage rail and the second harness is 3 cm or less.
Therefore, since the routing route is set in the vicinity of the storage rail, the space under the seat cushion can be efficiently used for routing. Furthermore, since the SAB harness is restrained from swinging wildly, even if the SAB harness passes near the storage rail, it is possible to prevent the harness from getting caught on the storage rail.

The vehicle seat of a third aspect further includes a first connector connected to the first harness and a second connector connected to the second harness in the first or second aspect, A second connector is arranged near the first connector.

In this aspect, the second connector is located near the first connector. Note that "nearby" here means that the shortest distance between the second connector and the first connector is 3 cm or less.
Therefore, compared to a mode in which the second connector is not disposed near the first connector, the second harness can be effectively wrapped around the first harness and the unruly movement of the second harness can be suppressed.

The vehicle seat of the fourth aspect further includes a vehicle body side member fixed to the vehicle body in the third aspect, the seat body is configured to be movable with respect to the vehicle body side member, and the first connector and the second connector is attached to the vehicle body side member, and the first harness is fixed to the vehicle body side member at a first fixing portion closest to the first connector, and is attached to the first connector. The second harness is fixed to the seat body at a second fixing part that is the second closest, and the second harness is wrapped around the first harness from the first fixing part to the second fixing part one or more times. There is.

In this aspect, the first connector and the second connector are attached to the vehicle body side member. For this reason, the structure is such that the portions of the first harness and the second harness that are close to the respective connectors are likely to become loose due to movement of the seat body.
Here, the first harness is fixed to the vehicle body side member at a first fixing part closest to the first connector, and fixed to the seat body at a second fixing part second closest to the first connector. The second harness is wound around the first harness from the first fixing part to the second fixing part one or more times.
Therefore, it is possible to effectively suppress the vibrations of the portions of the first harness and the second harness that are close to the respective connectors.

In the vehicle seat according to a fifth aspect, in any one of the first to fourth aspects, the seat cushion includes a cushion lower member that supports the seat pad of the seat cushion from below the seat, and the cushion lower member supports the seat pad of the seat cushion from below the seat. The first harness is fixed, and the second harness is not fixed to the cushion lower member.

In this aspect, the first harness is fixed to the cushion lower member that supports the seat pad of the seat cushion from below the seat, and the second harness is not fixed to the cushion lower member.
Therefore, there is no need to provide the cushion lower member with a structure (for example, a fixing hole) for fixing the second harness. Therefore, a cushion lower member having the same structure as a cushion lower member included in a vehicle seat that includes only one of the first device and the second device can be used.

In the vehicle seat according to a fifth aspect, in any one of the first to fourth aspects, the first device is a seat belt device, and the second device is an airbag device.

In this aspect, in a vehicle seat equipped with an airbag device (not limited to a side airbag device), an increase in cost can be avoided while suppressing the unruliness of the harness connected to the airbag device. Note that in the present disclosure, a seatbelt device broadly refers to a device related to a seatbelt, and a buckle device is included in the seatbelt device.

As explained above, in the vehicle seat according to the present invention, it is possible to suppress the unruliness of the second harness and avoid an increase in cost.

FIG. 1 is a perspective view showing the vehicle seat of the embodiment from diagonally below the seat. FIG. 2 is an enlarged perspective view of a part of FIG. 1;

Hereinafter, a vehicle seat 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
Note that arrow FR, arrow UP, and arrow RH, which are appropriately indicated in each figure, indicate the front of the seat, the upper part of the seat, and the right side of the seat, respectively. Hereinafter, when a description is made simply using front and rear, left and right, and up and down directions, unless otherwise specified, this refers to the front and back, left and right (width direction), and up and down directions of the vehicle seat.

FIG. 1 shows a vehicle seat 10 according to this embodiment.

The vehicle seat 10 includes seat bodies 12, 14, and 16. The seat bodies 12, 14, and 16 include a seat cushion 12, a seat back 14, and a headrest 16.
The vehicle seat 10 also includes a pair of left and right slide rails 20 that allow the seat bodies 12, 14, and 16 to slide in the front-back direction of the seat with respect to a vehicle body (not shown), and a plurality of leg members 22. Each slide rail 20 includes a lower rail 20L and an upper rail 20U fixed to the seat cushion 12. Each lower rail 20L is fixed to the vehicle body via a front leg member 22 and a rear leg member 22. As a result, the plurality of leg members 22 and the pair of left and right lower rails 20L are fixed to the vehicle body, and correspond to "vehicle body side members."

The vehicle seat 10 also includes a buckle device (not shown, which corresponds to the "first device" of the present invention) having a seat belt attachment confirmation function, and a buckle harness 30 ("first harness") connected to the buckle device. and a buckle connector 32 (“first connector”) fixed to the terminal of the buckle harness 30. The buckle device is disposed on the outside in the seat width direction (in the present embodiment, on the right side) with respect to the seat cushion 12, and is hidden behind the seat cushion 12 in FIG. The buckle connector 32 is a connector for connecting the buckle harness 30 and a harness on the vehicle body side.

The vehicle seat 10 also includes a side airbag device (hereinafter referred to as an SAB device, which corresponds to the “second device” of the present invention), not shown, and an SAB harness 40 (“second harness”) connected to the SAB device. and an SAB connector 42 (“second connector”) fixed to the terminal of the SAB harness 40. The SAB device is provided inside one or both of the pair of left and right side portions 14S of the seat back 14. The SAB connector 42 is a connector for connecting the SAB harness 40 and a harness on the vehicle body side.
In addition, it can be said that the buckle device having the seat belt wearing confirmation function of this embodiment corresponds to a "common device", and the SAB device corresponds to a "special device". The term "common device" here refers to a device that is commonly installed in vehicle seats of relatively more car models than a special device, and the term "special device" refers to a device that is commonly provided in vehicle seats of relatively more vehicle models than a common device. means a device specially installed on the seat.

As shown in FIG. 2, the buckle connector 32 and the SAB connector 42 are attached to a bracket 24 fixed to the right and front leg member 22 by welding or the like. Therefore, the positions of the connectors 32 and 42 relative to the vehicle body do not change. The SAB connector 42 is arranged below the buckle connector 32.

The buckle harness 30 is fixed to the bracket 24 at a portion near the buckle connector 32 by a clip 50A (“first fixing portion”). Further, the SAB harness 40 is also fixed to the bracket 24 by a clip 50A at a portion near the SAB connector 42. This prevents a strong force from being applied to the connection between the buckle harness 30 and the buckle connector 32, and also prevents a strong force from being applied to the connection between the SAB harness 40 and the SAB connector 42.

The seat cushion 12 includes a cushion pan 52 ("cushion lower member") that supports the lower surface of the seat pad (not shown). The cushion pan 52 is a plate-shaped member made of metal, resin, or the like. Clips 50B and 50C for fixing the buckle harness 30 are attached to the cushion pan 52. The clips 50B and 50C are attached to the cushion pan 52 using fixing holes (not shown) formed in the cushion pan 52. Thereby, the route of the buckle harness 30 below the seat cushion 12 is determined.

As shown in FIG. 1, the two (plural) clips 50B and 50C of the cushion pan 52 are fixed at a position along the outer edge of the cushion pan 52 in the seat width direction (the right edge in this embodiment). be. Thereby, the routing route of the buckle harness 30 is a route that extends in the seat front-rear direction in an area on the outside in the seat width direction (in the illustrated example, on the same right side as the buckle device) on the lower side of the seat cushion 12.

On the other hand, the SAB harness 40 is not fixed to the cushion pan 52 with a clip or the like. Therefore, a fixing hole for attaching a clip for fixing the SAB harness 40 is not formed in the cushion pan 52. However, since the SAB harness 40 is wound around the buckle harness 30 multiple times in the above-mentioned routing route, its unruliness is suppressed.

With the above configuration, the buckle harness 30 is fixed to the bracket 24, which is a vehicle body side member, in the first fixing part (clip 50A), and the buckle harness 30 is fixed in the second fixing part (clip 50B). is fixed to the cushion pan 52 which is the seat body. Note that the fixing part of the buckle harness 30 that is closest to the buckle connector 32 is called a first fixing part, and the fixing part that is next closest to it is called a second fixing part.
The SAB harness 40 is wrapped around the buckle harness 30 at least once (twice in this embodiment) around the portion between the first fixing part 50A and the second fixing part 50B. Thereby, it is possible to effectively suppress the unruliness of the portion of the SAB harness 40 that is close to the SAB connector 42.
Furthermore, the SAB harness 40 is also wound around the portion of the buckle harness 30 between the second fixing part 50B and the third fixing part 50C one or more times.

The vehicle seat 10 also includes a storage rail 60 on the lower side of the seat cushion 12. The storage rail 60 is a rail that supports an undertray (not shown) disposed below the seat cushion 12 so as to be slidable in the front-rear direction of the seat. The storage rail 60 is formed by, for example, bending a rod-shaped member. The storage rail 60 has a pair of right and left overhang portions 62 that overhang inward in the seat width direction. A pair of projecting portions 62 function to support the undertray from below.

The part of the buckle harness 30 between the first fixing part 50A and the second fixing part 50B and the part of the SAB harness 40 that is wrapped around the part are in the vicinity of the storage rail 60 and are attached to the storage rail 60. In contrast, it is arranged so as to pass on the outside in the seat width direction.

<Effect>
Next, the effects of this embodiment will be explained.

In this embodiment, the vehicle seat 10 includes seat bodies 12, 14, and 16, a buckle harness 30 connected to a buckle device, and an SAB harness 40 connected to an SAB device.

Here, the buckle harness 30 is fixed to the seat bodies 12, 14, and 16. Therefore, it is possible to suppress the buckle harness 30 from swinging against the seat body 12, 14, 16. Further, the SAB harness 40 is wound around the buckle harness 30. Therefore, even if the SAB harness 40 is not fixed to the seat main body 12, 14, 16, or the number of fixing points is small, the swinging of the SAB harness 40 can be appropriately suppressed.
Therefore, according to the present embodiment, the structure for fixing the SAB harness 40 can be omitted or reduced, and as a result, it is possible to suppress the swinging of the SAB harness 40 and avoid an increase in cost.

Further, in this embodiment, the portion of the SAB harness 40 that is wrapped around the buckle harness 30 passes near the storage rail 60. Note that "nearby" here means that the shortest distance between the storage rail and the SAB harness (second harness) is 3 cm or less.
Therefore, since the wiring route is set in the vicinity of the storage rail 60, the space under the seat cushion 12 can be efficiently used for wiring. Furthermore, since the SAB harness 40 is restrained from swinging wildly, even if the SAB harness 40 passes near the storage rail 60, it is possible to prevent the harnesses 30, 40 from getting caught on the storage rail.

Further, in this embodiment, the SAB connector 42 is arranged near the buckle connector 32. Note that "nearby" here means that the shortest distance between the SAB connector 42 and the buckle connector 32 is 3 cm or less.
Therefore, compared to a mode in which the SAB connector 42 is not disposed near the buckle connector 32, the SAB harness 40 can be effectively wrapped around the buckle harness 30 and the swinging of the SAB harness 40 can be suppressed.

Further, in this embodiment, the buckle connector 32 and the SAB connector 42 are attached to the bracket 24, which is a vehicle body side member. For this reason, the structure is such that the portions of the buckle harness 30 and the SAB harness 40 that are close to the respective connectors 32 and 42 are likely to become violent due to the movement of the seat bodies 12, 14, and 16.
Here, the buckle harness 30 is fixed to the bracket 24, which is a vehicle body side member, at a first fixing portion 50A closest to the buckle connector 32, and to the seat body 12 at a second fixing portion 50B second closest to the buckle connector 32. , 14, 16 are fixed to the cushion pan 52. The SAB harness 40 is wound around the buckle harness 30 from the first fixing part 50A to the second fixing part 50B one or more times.
Therefore, it is possible to effectively suppress the vibrations of the portions of the buckle harness 30 and the SAB harness 40 that are close to the respective connectors 32 and 42.

Further, in this embodiment, the buckle harness 30 is fixed to the cushion pan 52, and the SAB harness 40 is not fixed to the cushion pan 52.
Therefore, it is not necessary to provide the cushion pan 52 with a structure for fixing the SAB harness 40 (for example, a fixing hole formed in the cushion pan 52). Therefore, it is possible to use a cushion pan 52 having the same structure as a cushion pan provided in a vehicle seat not equipped with an SAB device. Furthermore, a clip for fixing the SAB harness 40 can be omitted, and in this respect as well, an increase in cost can be suppressed.

〔supplementary explanation〕
In addition, in the said embodiment, the buckle connector 32 and SAB connector 42 as a 1st connector and a 2nd connector demonstrated the example attached to the vehicle body side member (bracket 24). However, the first connector and the second connector of the present disclosure are not limited to this, and may be attached to the seat body.

Further, in the above embodiment, an example has been described in which a portion of the SAB harness 40 serving as the second harness near the SAB connector 42 is fixed. However, the second harness of the present disclosure is not limited to this, and may not be fixed at a portion near the second connector.

Further, in the above embodiment, an example in which the "cushion lower member" is a cushion pan has been described. However, the "cushion lower member" of the present disclosure is not limited thereto, and may be, for example, a member consisting of a rectangular frame member and a spring attached to the frame member. The first harness may be fixed to the frame member or spring of this member (via a resin member such as a clip).
Furthermore, in the above embodiment, an example has been described in which the buckle harness 30 as the first harness is fixed to the cushion pan 52 as the cushion lower member. However, the member to which the first harness of the present disclosure is fixed is not limited to the cushion lower member, but may be another member of the seat body.

Furthermore, in the above embodiment, an example has been described in which the "first device" is a common device and the "second device" is a special device. However, the first device and second device of the present disclosure are not limited thereto. For example, the first device may be a special device and the second device may be a common device.

10 Vehicle seats 12, 14, 16 Seat body 12 Seat cushion 14 Seat back 20 Slide rail 20L Lower rail (vehicle body side member)
20U Upper rail 22 Leg member (vehicle side member)
24 Bracket (vehicle body side member)
30 Buckle harness (first harness)
32 Buckle connector (first connector)
40 SAB harness (second harness)
42 SAB connector (second connector)
50A clip (first fixing part)
50B Clip (second fixing part)
50C clip (third fixing part)
52 Cushion pan (seat body)
60 Storage rail

Claims (7)

a seat body including a seat cushion and a seat back;
a first harness connected to a first device and fixed to the seat body;
a second harness connected to a second device and wrapped around the first harness;
A vehicle seat equipped with. The second device is a device provided in a vehicle seat of a more limited number of vehicle types than the first device.
The vehicle seat according to claim 1. further comprising a storage rail for supporting an undertray arranged under the seat cushion,
A portion of the second harness that is wrapped around the first harness passes near the storage rail.
The vehicle seat according to claim 1 or 2. a first connector connected to the first harness;
further comprising a second connector connected to the second harness,
the second connector is located near the first connector,
The vehicle seat according to claim 1 or 2. Further comprising a vehicle body side member fixed to the vehicle body,
The seat body is configured to be movable relative to the vehicle body side member,
The first connector and the second connector are attached to the vehicle body side member,
The first harness is fixed to the vehicle body side member at a first fixing part closest to the first connector, and fixed to the seat body at a second fixing part second closest to the first connector. ,
The second harness is wound one or more times around a portion of the first harness from the first fixing part to the second fixing part,
The vehicle seat according to claim 4. The seat cushion includes a cushion lower member that supports the seat pad of the seat cushion from below the seat,
the first harness is fixed to the cushion lower member;
the second harness is not fixed to the cushion lower member;
The vehicle seat according to claim 1 or 2. The first device is a seat belt device,
the second device is an airbag device;
The vehicle seat according to claim 1 or 2.