JP2022100388A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit a reinforcement member from stopping forward movement of a seat belt to inhibit a large load from being applied to the seat belt.

SOLUTION: In a vehicle seat (a vehicle seat S), a buckle BC to which a seat belt is detachably attached is disposed at one side of a seat cushion S1 as seen in a lateral direction. The seat cushion S1 includes: a cushion frame 1; a reinforcement member 2 provided at one side of the cushion frame 1 and disposed at the front side relative to the buckle BC; and a pad 3 attached onto the cushion frame 1 and the reinforcement member 2. The reinforcement member 2 has: a base part 21 extending to one side from the cushion frame 1; and a protruding part 22 protruding rearward from the base part 21. A space A between the protruding part 22 and the cushion frame 1 opens to the rear side.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

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

Conventionally, there is known 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 (see Patent Document 1).

Japanese Patent No. 6074500

By the way, when the cushion pad to be put on 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 this reinforcing member. Sometimes.

However, in such a structure, when the upper body of the occupant falls forward with respect to the vehicle seat in the case of a frontal collision of the vehicle, the seat belt moves forward as the upper body of the occupant tilts, and the seat belt Movement may be stopped by the reinforcing member. If 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 the forward movement of the seat belt from being stopped by the reinforcing member, thereby suppressing a large load from being applied to the seat belt.

The present invention that solves the above-mentioned problems is a vehicle seat in which a buckle to which a seat belt can be attached and detached is arranged on one side in the left-right direction of the seat cushion.
The seat cushion includes a cushion frame, a reinforcing member provided on one side of the cushion frame and arranged in front of the buckle, and a pad covering 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. There is.

According to this configuration, the space between the protrusion and the cushion frame is opened to the rear, so that even if the seatbelt attached to the buckle moves forward with the occupant in the event of a frontal collision of the vehicle, the seatbelt 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 forming the reinforcing member with wires.

Further, the protruding portion has a first portion extending rearward from the base portion, a bent portion that bends inward in the left-right direction from the rear end of the first portion, and a second portion extending forward from the bent portion. You may be doing it.

According to this, since the protruding portion has a U shape, the rigidity of the protruding portion is increased, and the pad can be satisfactorily supported.

Further, the length of the second portion may be shorter than that of the first portion.

According to this, since the second portion is less likely to bend than the first portion, it is possible to prevent the pad from being dented between the first portion and the cushion frame by the second portion.

Further, the reinforcing member may have a third portion extending from the second portion to the cushion frame, and the base portion and the third portion 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 satisfactorily supported by the reinforcing member.

Further, the fixed portions of the base portion and 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 portion and the third portion to the cushion frame by welding or the like can be efficiently performed.

Further, 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 surface shape of the seat cushion.

Further, the third portion may have a portion that extends diagonally from the cushion frame side toward the one side and the upper side.

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

Further, at least a part of the protruding 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 well supported by the protrusion.

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 portion and the second portion arranged in parallel.

According to the present invention, it is possible to suppress the forward movement of the seat belt from being stopped by the reinforcing member, so that it is possible to suppress the application of a large load to the seat belt.

Further, by forming the reinforcing member with wires, the weight of the vehicle seat can be reduced.

Further, by forming the protruding portion into a U shape having the first portion, the bent portion and the second portion, the rigidity of the protruding portion is increased and the pad can be satisfactorily supported.

Further, by making the length of the second part shorter than that of the first part, the second part is less likely to bend than the first part, so that the pad is dented between the first part and the cushion frame. It can be suppressed depending on the part.

Further, by fixing both ends of the reinforcing member, which is a wire, to the cushion frame, the pad can be satisfactorily supported by the reinforcing member.

Further, by setting the fixing points of the base portion and the third portion with respect to the cushion frame at different positions in the left-right direction, the work of fixing the base portion and the third portion to the cushion frame by welding or the like can be efficiently performed.

Further, by fixing the third portion to the lower surface of the cushion frame, it is possible to suppress the fixing portion of the third portion from affecting the seat surface shape of the seat cushion.

Further, since the third portion has a portion that extends diagonally from the cushion frame side toward one side and the upper side, the third portion has a portion that extends diagonally upward even when a load is applied to the protruding portion from above. It is possible to receive a load from above satisfactorily by the three parts, and it is possible to prevent the pad from sinking excessively.

Further, by locating at least a part of the protruding portion within the range of the buckle in the left-right direction, the pad can be extended to the front of the buckle, and the extended pad can be satisfactorily supported by the protruding portion.

Further, by arranging the first portion and the second portion in parallel, when a load is applied to the upper surface of the seat cushion, the load can be firmly supported.

It is a perspective view of the vehicle seat which shows one Embodiment of the vehicle seat which concerns on this invention. It is a top view of the cushion frame. FIG. 2 is a cross-sectional view taken along the line II of FIG. It is a figure (a)-(c) which shows the action effect of the reinforcing member at the time of a frontal collision of a vehicle.

Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to the accompanying drawings. The vehicle seat of one embodiment is configured as a vehicle seat S mounted on an automobile, for example, as shown in FIG. 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 up and down are based on the occupant sitting on the seat.

The vehicle seat S constitutes a seat on the right side of the seat in the second row of the vehicle, and a buckle BC to which a seat belt SB (see FIG. 4) can be attached and detached is arranged on the left side of the seat cushion S1. .. The buckle BC is supported at a position away from the floor of the vehicle by being supported by the long support member SP. Specifically, the buckle BC is arranged 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 load of a spring.

The seat cushion S1 is arranged at a position away from the floor of the vehicle by supporting the front side portion by two front legs F1 and supporting the rear end portion by two rear legs F2 (only one is shown). There is.

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 covered with the cushion frame 1 and the reinforcing member 2. The pad 3 is made of a cushioning material such as urethane foam. The pad 3 is covered with a skin material 4 (see FIG. 1) such as synthetic leather or cloth.

The pad 3 has a first surface 31 arranged on the leftmost side as a side surface (left side) on the side where the buckle BC is provided, a second surface 32 arranged on the right side of the first surface 31, and a second surface 32. It has a third surface 33 arranged on the right side of the surface. 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 with the reinforcing member 2 when viewed from the left-right direction.

The second surface 32 is arranged 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 arranged 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 the second step surface 3B along the left-right direction. By forming the shape of the left side portion of the pad 3 in this way, the buckle BC is arranged in the recess recessed from the first surface 31 toward the right side.

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

The fourth surface 34 is arranged on the right side of the reinforcing member 2. The fifth surface 35 is arranged 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 in the left-right direction. The fourth surface 34 overlaps the reinforcing member 2 and the buckle BC when viewed from the front-rear direction. The third stepped surface 3C overlaps with the reinforcing member 2 when viewed from the front-rear 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 extends from the front end 11A extending in the left-right direction, the arcuate bending portion 11B that bends backward from each end portion in the left-right direction of the front portion 11A, and the rear end of each bending portion 11B toward the rear. It has a side portion 11C. In addition to the base frame 11, the cushion frame 1 also includes other frames such as a frame connecting both ends of the base frame 11, but the description thereof will be omitted for convenience.

The reinforcing member 2 is made of a metal wire and is arranged in front of the buckle BC. The reinforcing member 2 has a base portion 21 extending to the left side from the cushion frame 1, a protruding portion 22 projecting rearward from the base portion 21, and a third portion 23.

The base portion 21 is a portion extending along the left-right direction, and the right end portion is fixed to the left end portion 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 diagonally front upper portion of the pipe-shaped front portion 11A. The base portion 21 is preferably arranged below the upper end of the pipe-shaped front portion 11A.

The protruding portion 22 is a first portion 22A extending rearward from the left end portion of the base portion 21 and a U bending inward in the left-right direction (center side in the left-right direction of the vehicle seat S), that is, to the right from the rear end of the first portion 22A. It has a bent portion 22B having a shape and a second portion 22C extending forward from the bent portion 22B. The first part 22A and the second part 22C are arranged with a space in the left-right direction so as to be parallel to each other. A space A is formed between the second portion 22C and the base frame 11. This space A is open to the rear.

Further, the length of the second portion 22C in the anteroposterior 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, a part of the first portion 22A and the bent portion 22B is 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. Therefore, the fixing points of the base portion 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-back direction. Specifically, the fixing portion of the base portion 21 is located in front 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 of the third portion 23 is fixed to the lower end of the pipe-shaped bent portion 11B. Further, the third portion 23 has a fixing portion 23A fixed to the base frame 11 and an inclined portion 23B extending diagonally 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 portion 22C. Further, the above-mentioned first portion 22A, bending portion 22B, and second portion 22C are arranged at the same position in the vertical direction.

Next, the action and effect of the reinforcing member 2 will be described with reference to FIG.
As shown in FIGS. 4 (a), when the occupant P wearing the seatbelt SB is driving the vehicle and the vehicle collides in 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 tilts. As a result, the seatbelt 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 seatbelt 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, and the protruding portion 22 of the reinforcing member 2 and the base. Enter the space A between the frames 11. As a result, it is possible to prevent 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 seatbelt SB attached to the buckle BC moves forward together with the occupant P at the time of a frontal collision of the vehicle, the seatbelt 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, the weight of the vehicle seat S can be reduced as compared with the case where the reinforcing member is made of an iron plate or the like, for example.

Since the protruding portion 22 is U-shaped, the rigidity of the protruding portion 22 is increased, and the pad 3 can be satisfactorily supported by the protruding portion 22.

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

Since both ends of the reinforcing member 2 which 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 satisfactorily supported by the reinforcing member 2.

Since the fixing points of the base 21 and the third part 23 with respect to the base frame 11 are set at different positions in the left-right direction, the work of fixing the base 21 and the third part 23 to the base frame 11 by welding, for example, can be efficiently performed. Can be done.

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

Since the third portion 23 has an inclined portion 23B extending diagonally upward, even when a load is applied to the protruding portion 22 from above, the third portion 23 having the inclined portion 23B satisfactorily receives the load from above. It is possible to prevent the pad 3 from sinking excessively.

Since a part of the protrusion 22 is located 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 satisfactorily supported by the protrusion 22. ..

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

Although the embodiment of the present invention has been described above, the present invention can be appropriately modified and carried out as shown in the following other embodiments.

In the above embodiment, a part of the protrusion 22 is arranged within 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 the range of the buckle in the left-right direction. It suffices if it is located inside. For example, the entire protrusion may be located within the buckle in the left-right direction.

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

In the above embodiment, the third portion 23 is fixed to the lower end of the pipe-shaped base frame 11, but the present invention is not limited to this, for example, among the semi-cylindrical curved surfaces of the lower half of the pipe-shaped base frame. The third part may be fixed at a place other than the lower end.

In the above embodiment, the vehicle seat S used in an automobile is exemplified as the vehicle seat, but the present invention is not limited to this, and other vehicle seats, for example, a seat used in a ship, an aircraft, or the like. It can also be applied to.

Each element described in the above-described embodiment and modification may be arbitrarily combined and carried out.

1 Cushion frame 2 Reinforcing member 3 Pad 21 Base 22 Protruding part A Space BC Buckle S Vehicle seat S1 Seat cushion SB Seat belt

Claims (1)

A vehicle seat in which a buckle to which a seat belt can be attached and detached is arranged on one side of the seat cushion in the left-right direction.
The seat cushion is
Cushion frame and
A reinforcing member provided on one side of the cushion frame and arranged in front of the buckle, and
The cushion frame and the pad to be put on the reinforcing member are provided.
The reinforcing member includes a base extending from the cushion frame to the one side and a base portion extending from the cushion frame to the one side.
It has a protrusion that protrudes rearward from the base.
By opening the space between the protrusion and the cushion frame to the rear, when the seat belt moves forward together with the occupant, the seat belt does not get caught in the reinforcing member and enters the space. A vehicle seat characterized by entering and moving forward.

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