JP2021066209A - Vehicle seat - Google Patents

Abstract

【Task】
Provided is a vehicle seat that allows the upper body to be turned backward more quickly and easily when only the upper body is to be turned.
SOLUTION:
The vehicle seat according to the present invention is a vehicle seat having a seat cushion and a seat back, and the seat back includes an upper frame 50 and a lower frame 40 which are vertically divided inside, and the upper frame 50 and the upper frame 50. A single rotation shaft 60 is provided between the lower frame 40 and the upper frame 50 so that the upper frame 50 can rotate in the horizontal direction.
[Selection diagram] Fig. 2

Description

The present invention relates to vehicle seats.

Various vehicle seats have been proposed in which the seat cushion and the seat back (seat body) of the vehicle seat are integrally rotated horizontally with respect to the vehicle floor. For example, it is provided with a rotation mechanism provided between the seat body and the first slide mechanism to rotatably support the seat body, and a rotation lock mechanism provided in the rotation mechanism to lock the seat body at a plurality of rotation lock positions. The movable side operating part and the fixed side operating part are arranged in a positional relationship in which the fixed side operating part can be operated by the movable side operating part regardless of the rotation lock position of the seat body. Has been proposed (Patent Document 1).

By rotating the seat body horizontally in this way, it is possible to easily get on and off the vehicle by the occupant and to easily put a child on the child seat.

However, there is a problem that only the seat back cannot be rotated when you want to turn only the upper body toward the rear side when you put your luggage on the back seat or talk with the person in the back seat while the vehicle is stopped. It was.

Japanese Unexamined Patent Publication No. 2005-1499

The present invention has been made in view of these problems, and an object of the present invention is to provide a vehicle seat capable of turning the upper body backward more quickly and easily when it is desired to turn only the upper body.

The present invention has adopted the following means in order to achieve the above-mentioned object.

The vehicle seat according to the present invention is
In a vehicle seat having a seat cushion and a seat back,
The seat back includes an upper frame and a lower frame that are vertically divided inside.
Between the upper frame and the lower frame, one rotation shaft is provided so that the upper frame can rotate in the horizontal direction.

According to the vehicle seat according to the present invention, since the seat back is formed of the upper frame and the lower frame, each of which is supported by one rotation shaft, only the upper frame can be rotated. Therefore, only the seat back can be rotated without rotating the seat cushion. Therefore, when the occupant puts the luggage on the back seat or wants to have a conversation with the occupant on the back seat, only the upper body can be turned to the side or the rear. In addition, since only one rotating shaft is used as the rotating structure, it is possible to reduce the number of parts and provide a vehicle seat capable of turning the upper body side at low cost. it can.

Further, in the vehicle seat according to the present invention, one or both of the lateral lower ends of the upper frame are provided with a tapered portion so that a space is formed between the upper frame and the lower frame. It may be something to do.

When returning the upper frame to the initial position after rotating the upper frame and the lower frame, there is a possibility that a hand may be caught between the upper frame and the lower frame. However, since a space is formed between the upper frame and the lower frame, it is possible to prevent the hands from being pinched.

Further, in the vehicle seat according to the present invention,
An urging member may be provided between the upper frame and the lower frame.

By providing an urging member between the upper frame and the lower frame, the rotated upper frame can be automatically returned to the initial position.

Further, in the vehicle seat according to the present invention, the urging member is installed so as to be substantially vertical between the tapered portion of the upper frame and the side of the lower frame. It may be something to do.

Further, in the vehicle seat according to the present invention,
The urging member may be characterized in that it is installed in the horizontal direction between the upper frame and the lower frame.

By arranging the urging member at such a position, the effectively rotated upper frame can be returned to the initial position.

Further, in the vehicle seat according to the present invention, the lower frame may be provided with a regulating member that regulates the rotation of the upper rail.

By providing such a regulating member, the rotation angle of the upper frame can be regulated.

Further, the vehicle seat according to the present invention may be characterized in that a drive motor is provided on the rotating shaft.

By providing the motor, it is possible to actively rotate in addition to the passive rotation by pressing by the body. For example, it may be rotated by operating a switch by an occupant, or may be automatically rotated by using an action control technique using a sensor provided on the seat back, an occupant monitoring camera, or the like.

Further, in the vehicle seat according to the present invention, the upper frame and the lower frame have separate upper cushions and lower cushions, respectively.
The upper cushion and the lower cushion are provided with an upper cover and a lower cover that cover the cushions, respectively.
A folding sheet may be provided between the upper cover and the lower cover.

By providing such a folding sheet, the possibility of pinching a hand between the upper frame and the lower frame can be reduced.

Further, the vehicle seat according to the present invention may be characterized in that the vehicle seat is rotatable with respect to the floor surface.

By adopting such a configuration, the rotation angles of both the rotation of the vehicle seat and the rotation of the upper frame are added, so that even when the same angle is rotated, each rotation angle can be reduced. ..

FIG. 1 is a perspective view of a vehicle seat 100 according to an embodiment. FIG. 2 is a perspective view showing the internal structure of the vehicle seat 100 according to the embodiment. FIG. 3 is a perspective view of the seat back frame 30 of the vehicle seat 100 according to the embodiment. FIG. 4 is a perspective view showing a state in which the upper frame 50 of the seat back frame 30 of the vehicle seat 100 according to the embodiment is rotated. FIG. 5 is an enlarged view of part A in FIG. FIG. 6 is a perspective view showing a state in which the seat back 2 of the vehicle seat 100 according to the embodiment is rotated. FIG. 7 is a cross-sectional view of the seat back 2 of the vehicle seat 100 according to the embodiment. FIG. 8 is a cross-sectional view showing a state in which the upper cushion 4 of the seat back 2 of the vehicle seat 100 according to the embodiment is rotated. FIG. 9 is a perspective view showing a state in which the seat cushion 1 of the vehicle seat 100 according to the embodiment is rotated with respect to the vehicle floor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations. Further, the corresponding components in each figure are designated by the same or similar reference numerals.

The vehicle seat 100 according to the present embodiment is a seat attached to the vehicle, and includes a seat cushion 1 and a seat back 2 as shown in FIG. FIG. 2 shows a perspective view of the internal structure excluding the cushion and the covering cover. As shown in FIG. 2, the internal structure of the vehicle seat 100 according to the present embodiment mainly includes a seat cushion frame 20 that is directly attached to the slide rail 10 or indirectly via an intermediate member 11 having various functions. It mainly includes a seat back frame 30 that can be recliningly attached to the seat cushion frame 20.

The slide rail 10 and the seat cushion frame 20 are not particularly limited, and known slide rails 10 and seat cushion frame 20 can be selected and used, respectively.

The seat back frame 30 includes a lower frame 40 attached to the seat cushion frame 20 via a reclining mechanism 13, and an upper frame 50 attached above the lower frame 40 via a rotating shaft 60. ..

As shown in FIG. 3, the lower frame 40 is formed in a substantially inverted U shape, and one rotating shaft 60 to which the upper frame 50 can be fixed is attached to the center.

The upper frame 50 is a frame for holding the shape of the seat back 2, and includes an upper frame 51 that supports the upper side of the seat back 2, a side frame 52 that supports both sides, and a lower frame 53 that is located below. And have. The lower frame 53 is formed horizontally near the center, is inclined diagonally upward from the middle, and is connected to the side frame 52, and the upper frame 50 is narrowed in width from the middle to the bottom. It is formed in a tapered shape, and as a whole, it has a shape like a combination of a quadrangle and an inverted trapezoid. The upper frame 50 is fixed to the above-mentioned rotating shaft 60 near the center of the lower frame 53, and as shown in FIG. 4, the upper frame 50 can rotate about the rotating shaft 60 with respect to the lower frame 40. Further, since the lower portions on both sides of the upper frame 50 are formed in a tapered shape, a large space α is formed between the upper frame 50 and the lower frame 40 as compared with the vicinity of the center. By forming such a space α, when the upper frame 50 is rotated, the upper frame is placed with the hands on the lower frame 40 (actually, the hands are placed through the cushion and the covering cover). Even when the 50 is returned to the initial position (the position where the seat back frame 30 faces the front), it is possible to prevent the hand from being caught between the upper frame 50 and the lower frame 40.

Spring members 61 are erected as urging members on both sides of the lower frame 40 and on both sides of the upper frame 50 so as to be substantially vertical. By erection of such a spring member 61, positioning can be performed when no force is applied to the upper frame 50. Therefore, after rotating the upper frame 50, if the rotating force is released, the upper frame 50 automatically returns to the initial position.

Further, as shown in FIG. 5, a spring member 62 is arbitrarily urged between the upper frame 50 and the lower frame 40 so that the urging force becomes zero and the direction is opposite to the rotation direction at the initial position. May be arranged in the horizontal direction. By providing the spring member 62 in the horizontal direction, a stronger force can be applied in the direction opposite to the direction of rotation in the lateral direction as compared with the spring member 61 in the vertical direction alone. The vertical spring member 61 and the horizontal spring member 62 may be provided in either one or both. By selecting the strength of these spring members 61 and 62, it is possible to adjust the force with respect to the rotation of the upper frame 50.

Further, when it is desired to rotate the upper frame 50 in only one direction, as shown in FIG. 5, a regulating member 70 for restricting the rotation of the upper frame 50 may be provided. In the present embodiment, the lower frame 40 is formed with protrusions that regulate the rotation of the upper frame 50 by abutting against the upper frame 50. By providing the regulating member 70, when viewed from above in FIG. 5, it can be rotated only in the clockwise direction (direction of the arrow).

As shown in FIG. 1, the internal structure of the vehicle seat 100 produced as described above is such that the seat cushion 3 is attached to the seat cushion frame 20, and the upper cushion 4 and the lower frame 40 are attached to the upper cushion 4 and the lower frame 40, respectively. The lower cushion 5 is attached to the vehicle seat 100. The vehicle seat 100 thus produced has only the upper body turned backward when the occupant gets off the vehicle, puts luggage behind, or turns around and talks with a person in the back seat. In this case, as shown in FIG. 6, when the upper frame 50 rotates with respect to the lower frame 40, the upper cushion 4 rotates and the upper body can be easily turned around greatly. Further, when the lower cushion 4 is turned around, even if the upper cushion 4 is returned with the hand placed, there is a space between the upper frame 50 and the lower frame 40. Since it is formed, it is possible to prevent the upper frame 50 and the lower frame 40 from pinching their hands. As described above, according to the present embodiment, the vehicle seat 100 in which the upper cushion 4 rotates can be manufactured with a simple structure.

In the above embodiment, as shown in FIG. 7, the upper cushion 4 and the lower cushion 5 are covered with the upper cover 4a and the lower cover 5a, respectively, and the front surface of the upper cover 4a is placed between the upper cover 4a and the lower cover 5a. A folding sheet 90 attached to the lower end of the side and the upper end of the lower cover 5a on the front side may be provided. By providing such a folding sheet 90, when the upper cushion 4 is rotated, as shown in FIG. 8, the folding sheet 90 is arranged between the folding sheet 90 and the lower cushion 5, which makes it difficult to place a hand. The possibility of pinching a hand can be further reduced.

Further, in the above-described embodiment, the upper cushion 4 and the lower cushion 5 are separated from each other, but a more flexible cushion material and a highly elastic upper cover 4a and lower cover 5a are used to use the upper cushion. 4 and the lower cushion 5 may be integrally formed, and the upper cover 4a and the lower cover 5a may be integrally formed.

Further, in the above embodiment, as shown in FIG. 5, a drive motor 65 may be provided on the rotating shaft 60 instead of the spring members 61 and 62 or in addition to the spring members 61 and 62. By providing the drive motor 65, the upper cushion 4 can be rotated by a switch operation (not shown) connected to the drive motor 65 without depending on the pressure caused by twisting the body. It is also possible to install an occupant surveillance camera in the vehicle to detect the movement of the body and use the behavior control technology to detect the movement of the occupant trying to turn around and rotate the vehicle. ..

Further, in the above embodiment, as shown in FIG. 9, the seat cushion 1 (seat cushion frame 20) may also be provided so as to be rotatable in the horizontal direction with respect to the vehicle floor. The mechanism for rotating the seat cushion 1 in the horizontal direction is not limited, and known means can be selected and used. By adopting such a configuration, the rotation angles of both the rotation of the seat cushion 1 and the rotation of the upper frame 50 are added to the vehicle seat 100, so that even when the same angle is rotated, each of them is rotated. The rotation angle can be reduced.

As shown in the above-described embodiment, it can be industrially used as a vehicle seat for an automobile.

1 ... Seat cushion, 2 ... Seat back, 4 ... Upper cushion, 4a ... Upper cover, 5 ... Lower cushion, 5a ... Lower cover, 10 ... Slide rail, 11 ... Intermediate member, 20 ... Seat cushion frame, 30 ... Seat back frame , 40 ... lower frame, 50 ... upper frame, 51 ... upper frame, 52 ... side frame, 53 ... lower frame, 60 ... rotating shaft, 61 ... spring member, 62 ... spring member, 65 ... drive motor, 70 ... Regulatory member, 90 ... folding seat, 100 ... vehicle seat, 130 ... reclining mechanism

Claims (9)

In a vehicle seat having a seat cushion and a seat back,
The seat back includes an upper frame and a lower frame that are vertically divided inside.
A vehicle seat characterized by having one rotating shaft between the upper frame and the lower frame so that the upper frame can rotate in the horizontal direction. The vehicle seat according to claim 1, wherein one or both of the lateral lower ends of the upper frame are provided with a tapered portion so that a space is formed between the upper frame and the lower frame. The vehicle seat according to claim 1 or 2, wherein an urging member is provided between the upper frame and the lower frame. The vehicle seat according to claim 3, wherein the urging member is installed so as to be substantially perpendicular to the tapered portion of the upper frame and the side of the lower frame. The vehicle seat according to claim 3, wherein the urging member is installed in a horizontal direction between the upper frame and the lower frame. The vehicle seat according to any one of claims 1 to 5, wherein the lower frame is provided with a regulating member that regulates the rotation of the upper rail. The vehicle seat according to any one of claims 1 to 6, wherein a drive motor is provided on the rotating shaft. The upper frame and the lower frame each have a separate upper cushion and lower cushion.
The upper cushion and the lower cushion are provided with an upper cover and a lower cover that cover the cushions, respectively.
The vehicle seat according to any one of claims 1 to 7, wherein a folding seat is provided between the upper cover and the lower cover. The vehicle seat according to any one of claims 1 to 8, wherein the vehicle seat is rotatable with respect to the floor surface.

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