WO2019203012A1

WO2019203012A1 - Vehicle seat

Info

Publication number: WO2019203012A1
Application number: PCT/JP2019/015010
Authority: WO
Inventors: 柴山裕樹; 藤原幸星; 秋元正行; 河本康伸; 原田雄太; 渡邊英範
Original assignee: テイ・エステック株式会社; 本田技研工業株式会社
Priority date: 2018-04-17
Filing date: 2019-04-04
Publication date: 2019-10-24
Also published as: JP2019182367A; JP7068018B2

Abstract

In this vehicle seat (wheeled vehicle seat (S)), a buckle (BC) to which a seatbelt can be attached and detached is disposed on one side, in a left-right direction, of a seat cushion (S1). The seat cushion (S1) is provided with a cushion frame (1), a reinforcement member (2) which is provided on one side of the cushion frame (1) and is disposed in front of the buckle (BC), and a pad (3) which is covered over the cushion frame (1) and the reinforcement member (2). The reinforcement member (2) has a base (21) which extends to one side from the cushion frame (1), and a protrusion (22) which protrudes rearward from the base (21). The space (A) between the protrusion (22) and the cushion frame (1) is open rearward.

Description

Vehicle seat

The present invention relates to a vehicle seat in which a buckle to which a seat belt can be attached and detached is disposed on one side of a cushion frame in the left-right direction.

Conventionally, a vehicle seat in which a buckle is arranged on the left side of a cushion frame formed by bending a cylindrical pipe into a frame shape is known (see Patent Document 1).

Japanese Patent No. 6074500

By the way, when the cushion pad that covers the cushion frame is extended to the front of the buckle, a reinforcing member such as a wire is joined to the cushion frame so as to protrude outward in the left-right direction from the cushion frame, and the cushion pad is put on the reinforcing member. Sometimes.

However, in such a structure, when the upper body of the occupant falls forward with respect to the vehicle seat at the time of a frontal collision of the vehicle, the seat belt moves forward with the tilt of the upper body of the occupant. The movement may be stopped by the reinforcing member. When the movement of the seat belt is stopped by the reinforcing member in this way, there is a problem that a large load is applied to the seat belt.

Therefore, an object of the present invention is to suppress a large load from being applied to the seat belt by suppressing the forward movement of the seat belt from being stopped by a reinforcing member.

This invention which solves an above-mentioned subject is a vehicle seat by which a buckle which can attach or detach a seatbelt is arranged on one side of a horizontal direction of a seat cushion.
The seat cushion includes a cushion frame, a reinforcing member that is provided on the one side of the cushion frame and is disposed in front of the buckle, and a pad that covers the cushion frame and the reinforcing member.
The reinforcing member has a base portion extending from the cushion frame to the one side and a protruding portion protruding rearward from the base portion, and a space between the protruding portion and the cushion frame is opened rearward. Yes.

According to this configuration, even if the seat belt mounted on the buckle moves forward together with the occupant in the event of a frontal collision of the vehicle, the seat belt is opened by opening the space between the protrusion and the cushion frame to the rear. However, since it moves forward through the space without being caught by the reinforcing member, it is possible to suppress a large load from being applied to the seat belt.

Further, the reinforcing member may be a wire.

According to this, the weight of the vehicle seat can be reduced by configuring the reinforcing member with a wire.

The protrusion has a first part extending rearward from the base part, a bent part bent inward in the left-right direction from the rear end of the first part, and a second part extending forward from the bent part. You may do it.

According to this, since the projecting portion is U-shaped, the rigidity of the projecting portion is increased and the pad can be favorably supported.

The length of the second part may be shorter than the first part.

According to this, since the second portion is less likely to bend than the first portion, the second portion can suppress the pad from being recessed between the first portion and the cushion frame.

The reinforcing member may have a third part extending from the second part to the cushion frame, and the base and the third part may be fixed to the cushion frame.

According to this, since both ends of the reinforcing member, which is a wire, are fixed to the cushion frame, the pad can be favorably supported by the reinforcing member.

Further, the base portion and the fixed portion of the third portion with respect to the cushion frame may be located at different positions in the left-right direction.

According to this, the work of fixing the base and the third portion to the cushion frame by welding or the like can be performed efficiently.

The third portion may be fixed to the lower surface of the cushion frame.

According to this, since the third portion is fixed to the lower surface of the cushion frame, it is possible to suppress the fixing portion of the third portion from affecting the seat cushion shape of the seat cushion.

Further, the third portion may have a portion extending obliquely from the cushion frame side toward the one side and the upper side.

According to this, even when a load is applied to the protrusion from above, the load from above can be satisfactorily received by the third portion having a portion extending obliquely upward, and the pad sinks excessively. Can be suppressed.

Further, at least a part of the projecting portion may be located within the range of the buckle in the left-right direction.

According to this, the pad can be extended to the front of the buckle, and the extended pad can be favorably supported by the protruding portion.

Further, the first part and the second part may be arranged in parallel.

According to this, when a load is applied to the upper surface of the seat cushion, the load can be firmly supported by the first part and the second part arranged in parallel.

1 is a perspective view of a vehicle seat showing an embodiment of a vehicle seat according to the present invention. It is the top view which looked at the cushion frame from the top. FIG. 3 is a sectional view taken along the line II in FIG. 2. FIG. 6 is a diagram (a) to (c) showing the function and effect of the reinforcing member when the vehicle collides front.

Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to the accompanying drawings. For example, as shown in FIG. 1, the vehicle seat according to the embodiment is configured as a vehicle seat S mounted on an automobile. The vehicle seat S includes a seat cushion S1, a seat back S2, and a headrest S3. In the present invention, front and rear, left and right, and top and bottom are based on a passenger sitting on the seat.

The vehicle seat S constitutes the right seat of the second row of seats of the vehicle, and a buckle BC to which the seat belt SB (see FIG. 4) can be attached and detached is disposed on the left side of the seat cushion S1. . The buckle BC is supported by the long support member SP, so that the buckle BC is disposed at a position away from the floor of the vehicle. Specifically, the buckle BC is disposed at a position overlapping the seat cushion S1 when viewed from the left-right direction. The support member SP is rotatably supported by a bracket BR fixed to the floor by a spring load.

The seat cushion S1 is disposed at a position away from the floor of the vehicle, with a front portion supported by two front legs F1 and a rear end supported by two rear legs F2 (only one shown). Yes.

As shown in FIG. 2, the seat cushion S1 includes a cushion frame 1, a reinforcing member 2 provided on the left side of the cushion frame 1, and a pad 3 that covers the cushion frame 1 and the reinforcing member 2. The pad 3 is made of a cushion material such as urethane foam. The pad 3 is covered with a skin material 4 (see FIG. 1) such as synthetic leather or fabric.

The pad 3 has a first surface 31 that is disposed on the leftmost side, a second surface 32 that is disposed on the right side of the first surface 31, and a second surface 32 on the side (left side) on which the buckle BC is provided. 3rd surface 33 arrange | positioned rather than the right side. The first surface 31, the second surface 32, and the third surface 33 are along the front-rear direction.

The first surface 31 is arranged on the left side of the buckle BC. Further, the first surface 31 overlaps the reinforcing member 2 when viewed from the left-right direction.

The second surface 32 is disposed behind the first surface 31, and is connected to the rear end of the first surface 31 via the first step surface 3A along the left-right direction. The second surface 32 is disposed on the right side of the buckle BC and overlaps the buckle BC when viewed from the left-right direction.

The third surface 33 is arranged behind the second surface 32 and is connected to the rear end of the second surface 32 via a second step surface 3B along the left-right direction. In this manner, the shape of the left side portion of the pad 3 is formed, so that the buckle BC is disposed in a recess that is recessed from the first surface 31 toward the right side.

Further, the pad 3 has, as front side surfaces, a fourth surface 34 that is disposed on the foremost side and a fifth surface 35 that is disposed on the rear side of the fourth surface 34. The fourth surface 34 and the fifth surface 35 are along the left-right direction.

The fourth surface 34 is disposed on the right side of the reinforcing member 2. The fifth surface 35 is disposed on the left side of the fourth surface 34 and is connected to the left end of the fourth surface 34 via a third step surface 3C inclined with respect to the left-right direction. The fourth surface 34 overlaps the reinforcing member 2 and the buckle BC when viewed from the front-rear direction. 3rd level | step difference surface 3C has overlapped with the reinforcement member 2 seeing from the front-back direction.

The cushion frame 1 has a base frame 11 formed by bending a metal pipe material into a U shape. The base frame 11 includes a front portion 11A extending in the left-right direction, an arc-shaped bent portion 11B bent backward from each end portion in the left-right direction of the front portion 11A, and a rear portion extending from the rear end of each bent portion 11B. Side part 11C. The cushion frame 1 includes other frames such as a frame that connects both ends of the base frame 11 in addition to the base frame 11, but the description thereof is omitted for the sake of convenience.

The reinforcing member 2 is made of a metal wire and is disposed in front of the buckle BC. The reinforcing member 2 includes a base portion 21 that extends to the left from the cushion frame 1, a protruding portion 22 that protrudes rearward from the base portion 21, and a third portion 23.

The base 21 is a portion extending in the left-right direction, and the right end is fixed to the left end of the front portion 11A of the base frame 11 by welding or the like. Specifically, the right end of the base 21 is joined to the front oblique upper portion of the pipe-shaped front portion 11A. In addition, it is preferable to arrange | position the base 21 below the upper end of 11 A of pipe-shaped front parts.

The protruding portion 22 is bent to the first portion 22A extending rearward from the left end portion of the base portion 21 and the left and right direction inner side (the center side in the left and right direction of the vehicle seat S) from the rear end of the first portion 22A. A bent portion 22B having a shape and a second portion 22C extending forward from the bent portion 22B are provided. 22 A of 1st site | parts and 22 C of 2nd site | parts are located in a line with the space | interval in the left-right direction so that it may become mutually parallel. A space A is formed between the second portion 22 </ b> C and the base frame 11. This space A is opened rearward.

Further, the length of the second portion 22C in the front-rear direction is shorter than that of the first portion 22A. A part of the protruding portion 22 configured as described above is located within the range of the buckle BC in the left-right direction. Specifically, the first portion 22A and a part of the bent portion 22B are located within the range of the buckle BC in the left-right direction.

The third portion 23 is formed so as to extend from the front end portion of the second portion 22C to the base frame 11. The right end of the third portion 23 is fixed to the rear end of the bent portion 11B of the base frame 11 by welding or the like. For this reason, the fixing portions of the base 21 and the third portion 23 with respect to the base frame 11 are located at different positions in the left-right direction and the front-rear direction. Specifically, the fixing portion of the base portion 21 is located forward of the fixing portion of the third portion 23 and on the center side in the left-right direction of the vehicle seat S.

As shown in FIG. 3, the right end of the third portion 23 is fixed to the lower surface of the base frame 11. Specifically, the right end portion of the third portion 23 is fixed to the lower end of the pipe-shaped bent portion 11B. The third portion 23 has a fixing portion 23A fixed to the base frame 11, and an inclined portion 23B extending obliquely from the left end of the fixing portion 23A toward the left side and the upper side. The left end of the inclined portion 23B is connected to the second part 22C. Further, the first portion 22A, the bent portion 22B, and the second portion 22C described above are arranged at the same position in the vertical direction.

Next, the effect by the reinforcement member 2 is demonstrated with reference to FIG.
As shown in FIG. 4 (a), when an occupant P wearing the seat belt SB is running the vehicle, when the vehicle collides front, as shown in FIGS. 4 (b) and 4 (c), The upper body of the occupant P is pulled forward by the inertial force and tilted. Accordingly, the seat belt SB attached to the buckle BC is pulled toward the center side and the front side in the left-right direction of the vehicle seat S. Therefore, the adjacent portion AP of the seat belt SB adjacent to the second surface 32 of the pad 3 moves to the front side and the center side in the left-right direction while deforming the pad 3, so that the protruding portion 22 of the reinforcing member 2 and the base It enters the space A between the frames 11. Thereby, it is possible to suppress the seat belt SB from interfering with the reinforcing member 2.

As described above, according to the vehicle seat S of the present embodiment, the following effects can be obtained.
Even if the seat belt SB mounted on the buckle BC moves forward together with the occupant P at the time of a frontal collision of the vehicle, the seat belt SB moves forward through the space A without being caught by the reinforcing member 2. It is possible to suppress a large load from being applied to the seat belt SB.

Since the reinforcing member 2 is made of a wire, for example, the vehicle seat S can be reduced in weight as compared with a case where the reinforcing member is made of an iron plate or the like.

Since the protruding portion 22 has a U shape, the rigidity of the protruding portion 22 is increased, and the pad 3 can be supported favorably by the protruding portion 22.

By making the length of the second part 22C shorter than the first part 22A, the second part 22C is less likely to bend than the first part 22A, so the pad 3 is between the first part 22A and the base frame 11. Indentation can be suppressed by the second portion 22C.

Since both ends of the reinforcing member 2 that is a wire are fixed to the base frame 11, the rigidity of the reinforcing member 2 is increased, and the pad 3 can be favorably supported by the reinforcing member 2.

Since the fixing portions of the base portion 21 and the third portion 23 with respect to the base frame 11 are set at different positions in the left-right direction, the work of fixing the base portion 21 and the third portion 23 to the base frame 11 by, for example, welding is efficiently performed. Can do.

Since the third portion 23 is fixed to the lower surface of the base frame 11, it is possible to suppress the fixed portion of the third portion 23 from affecting the seat surface shape of the seat cushion S1.

Since the third portion 23 has the inclined portion 23B extending obliquely upward, even when a load is applied to the protruding portion 22 from above, the third portion 23 having the inclined portion 23B receives the load from above satisfactorily. And the pad 3 can be prevented from sinking excessively.

Since a part of the protrusion 22 is positioned within the range of the buckle BC in the left-right direction, the pad 3 can be extended to the front of the buckle BC, and the extended pad 3 can be favorably supported by the protrusion 22. .

Further, since the first portion 22A and the second portion 22C are arranged in parallel, the load can be firmly supported when a load is applied to the upper surface of the seat cushion S1.

Although the embodiments of the present invention have been described above, the present invention can be implemented with appropriate modifications as shown in other embodiments below.

In the embodiment, a part of the protrusion 22 is arranged in the range of the buckle BC in the left-right direction, but the present invention is not limited to this, and at least a part of the protrusion is in the range of the buckle in the left-right direction. It only has to be located within. For example, the whole protrusion part may be located in the range of a buckle in the left-right direction.

In the above embodiment, the present invention is applied to the seat disposed on the right side with respect to the center in the left-right direction of the vehicle. However, the present invention is not limited to this, and the seat disposed on the left side, that is, the buckle is disposed on the right side. The present invention may be applied to the formed sheet. Further, the present invention is not limited to the second row sheet, and may be applied to the first row or third row sheet.

In the said embodiment, although the 3rd site | part 23 was fixed to the lower end of the pipe-shaped base frame 11, this invention is not limited to this, For example, among the semi-cylindrical curved surface of the lower half of a pipe-shaped base frame You may fix a 3rd site | part to locations other than a lower end.

In the said embodiment, although the vehicle seat S used by a motor vehicle was illustrated as a vehicle seat, this invention is not limited to this, For example, the sheet | seat used for a ship, an aircraft, etc. It can also be applied to.

The elements described in the above-described embodiments and modifications may be implemented in any combination.

Claims

A vehicle seat in which a buckle capable of attaching and detaching a seat belt is disposed on one side of the seat cushion in the left-right direction,
The seat cushion is
Cushion frame,
A reinforcing member provided on the one side of the cushion frame and disposed in front of the buckle;
A pad that covers the cushion frame and the reinforcing member;
The reinforcing member includes a base extending from the cushion frame to the one side;
A protrusion protruding backward from the base,
A vehicle seat, wherein a space between the projecting portion and the cushion frame is opened rearward.
2. The vehicle seat according to claim 1, wherein the reinforcing member is a wire.
The protrusion is
A first portion extending rearward from the base;
A bent portion bent inward in the left-right direction from the rear end of the first portion;
The vehicle seat according to claim 2, further comprising: a second portion extending forward from the bent portion.
4. The vehicle seat according to claim 3, wherein a length of the second part is shorter than that of the first part.
The reinforcing member has a third portion extending from the second portion to the cushion frame,
The vehicle seat according to claim 3 or 4, wherein the base portion and the third portion are fixed to the cushion frame.
The vehicle seat according to claim 5, wherein each of the fixed portions of the base portion and the third portion with respect to the cushion frame is located at different positions in the left-right direction.
The vehicle seat according to claim 5 or 6, wherein the third portion is fixed to a lower surface of the cushion frame.
The vehicle seat according to any one of claims 5 to 7, wherein the third portion has a portion extending obliquely from the cushion frame side toward the one side and the upper side.
The vehicle seat according to any one of claims 1 to 8, wherein at least a part of the protrusion is positioned within the range of the buckle in the left-right direction.
The vehicle seat according to claim 3, wherein the first part and the second part are arranged in parallel.