JPH0577667A - Seat for automobile - Google Patents

Abstract

PURPOSE:To retain a sitter's body to avoid lateral movement while taking a seat and to easily get in and out an automobile in getting in and out the automobile by convertibly composing a normal state in which the seat surface of a body part locates at a position lower than side panel parts and a getting in and out state in which the seat face elevates above the normal state. CONSTITUTION:A seat bottom 1 comprises a body part 3 in which a seat face 31 is formed, and side panel parts 4 placed at both side parts in wheel axial direction of the body part 3. And, the side panel parts 4 are mounted on slide rails 5 so that upper end parts 41 may be an upper position than the seat face 31 when the body part 3 is in a normal state. Where, the body part 3 is supported on a car body through a lift means. When the body part 3 is elevated with the lift means, the seat face 31 is converted into a getting in and out state in which the seat face 31 elevates above the normal state. Thus, a driver's body is retained to avoid lateral movement by the side panel parts 4 while taking a seat and is allowed to easily get in and out an automobile in getting in and out automobile.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat that is easy to get on and off.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat as shown in FIG. 6 is generally known. This is because the seat bottom 10 is formed of a main body portion 30 having a seat surface 301 formed thereon and bank portions 40 on both sides of the main body portion 30, and the bank portion 40 is raised so as to be higher than the seat surface 301. The bank portion 40 prevents lateral displacement of the seated person in the vehicle width direction.

[0003]

In the conventional vehicle seat described above, since the bank portion 40 is formed to be higher than the seat surface 301, the seated state can be maintained when seated. On the other hand, there is an inconvenience that the bank portion 40 is an obstacle to getting on and off when getting on and off.

The present invention has been made in view of such circumstances, and when seated, the body of the seated person can be held so as not to laterally shift, and the vehicle seat that can be easily got on and off when getting on and off. Is intended to provide.

[0005]

In order to achieve the above object, according to claim 1, in a vehicle seat comprising a seat back and a seat bottom, the seat bottom has a main body portion having a seating surface, and the main body. A bank portion supported by the vehicle body so as to be arranged on both sides in the vehicle width direction of the portion, and a lift means for vertically moving the main body portion, the main body portion being supported by the vehicle body via the lift means, The lift means is configured to be convertible between a normal state in which the seat surface of the main body portion is lower than the bank portion and a boarding / alighting state in which the seat surface is raised above the normal state.

According to a second aspect of the present invention, the lift means comprises a parallel link member and a cylinder for rotationally driving the parallel link member. One end of the cylinder is the vehicle body or the main body portion, and the other end is the parallel link member. And the parallel link members are arranged so as to be undulated by the expansion and contraction of the rod.

[0007]

According to the first aspect of the present invention, when the main body is in the normal state, the bank portion is above the seat surface, so that the body of the seated person is held by the bank portion so as not to laterally shift, and the main body portion is held. When the vehicle is lifted by the lift means to be in a boarding / alighting state, it becomes easier to get in and out as much as the amount of protrusion of the bank portion above the seat surface decreases.

According to claim 2, the claim 1
In addition to the action of the above, the parallel link member is undulated by the expansion and contraction of the cylinder, so that the lift means is operated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, an automobile seat is basically composed of a seat bottom 1 and a seat back 2. The seat bottom 1 has a main body 3 having a seating surface 31, and a vehicle width of the main body 3. It is composed of bank portions 4 arranged on both sides in the direction. The bank portion 4 has a slider rail 5 so that the upper end portion 41 of the bank portion 4 is higher than the seat surface 31 when the main body 3 is in a normal state (state shown by a solid line in FIG. 2). Installed on. Further, the body portion 3 is integrally connected to the seat back 2, and the body portion 3
Is attached to the upper rail 51 of the slider rail 5 via the lift means 6 shown in FIG. 1, whereby the main body 3 is supported by the vehicle body 7 via the lift means 6 and the slider rail 5.

The lift means 6 are arranged on both sides of the main body 3 in the vehicle width direction, and the ends thereof rotate around a horizontal axis around the upper rail 51 or the bottom frame 32 of the main body 3 as shown in FIGS. A pair of front and rear parallel link members 61a and 61b rotatably attached to the front air cylinder 62 and an air cylinder 62 for undulating the front parallel link member 61a.
And the air cylinder 62 and the front parallel link member 6
It is composed of a pair of first actuating pieces 63 for connecting 1a and a pair of second actuating pieces 64 for guiding the operation of the first actuating pieces 63. A bracket 65 for supporting the front parallel link member 61a and the second actuating piece 64 is provided on a cross member 511 spanning between the upper rails 51 on both sides in the vehicle width direction, and the base end of the air cylinder 62 is It is attached to the upper rail 51 behind the cross member 511 so as to be rotatable around a horizontal axis.

As shown in FIG. 4, one end 611 of the front parallel link member 61a is the rear portion 6 of the bracket 65.
51 around the horizontal axis a and the other end 612 is the bottom frame 3
2 (see FIG. 3) and a mounting portion 321 that is rotatable about a horizontal axis b.
1 around the intermediate portion 613 of the link member 61a and the horizontal axis c, and the other end portion 632 of the rod member 6 of the air cylinder 62.
21 and one end 641 of the second operating piece 64 are rotatably connected to each other about the horizontal axis d.
The other end 642 is attached to the front portion 652 of the bracket 65 so as to be rotatable around the horizontal axis e.

The air cylinder 62 is connected to an operation switch (not shown) provided at a proper place in the vehicle around the seated person, and when the operation switch is turned on, the air cylinder 62 is in a contracted state (shown by a chain double-dashed line in FIG. 5). State), and is released by an OFF operation to be in an extended state (state shown by a solid line in FIG. 5). The air cylinder 62 has the horizontal axis c of the first operating piece 63 and the second operating piece 64 in the extended state.
The rod length is set such that d and e are aligned in a straight line in a side view in the tangential direction of the rotation locus about the horizontal axis a. Then, the main body portion 3 is supported by the link member 61a which is obliquely supported in the laid-down state (state shown by the solid line in FIG. 5) via the horizontal axis c in such a state.
Is kept in the normal state as shown by the alternate long and short dash line in FIG.

When the air cylinder 62 is contracted, the link member 6 is inserted through the first operating piece 63.
1a is rotated in the clockwise direction of FIG. 5 around the horizontal axis a to reach an upright state (a state indicated by a chain double-dashed line in FIG. 5), and the main body 3 is supported by the link member 61a in the upright state. The vehicle is held in the boarding / alighting state indicated by the chain double-dashed line in FIG. In this boarding / alighting state, as shown in FIG. 2, the seat surface 31 of the main body portion 3 is arranged above the upper end portion 41 of the bank portion 4.

In the above structure, the air cylinder 62 is normally turned off and the main body 3 is held in the normal state. In this state, the first operating piece 63 and the second operating piece 64 overlap each other in parallel, and the horizontal axes c, d and e arranged on the same plane are aligned with each other along the horizontal axis a which is the rotation axis of the link member 61a. It is arranged in the tangential direction of the center of rotation locus. Therefore, the link member 61a is restricted from rotating counterclockwise around the horizontal axis a due to the top load from the main body portion 3, whereby the main body portion 3 is loaded onto the seated person or the like. It is kept in the normal condition against. In this normal state, since the upper end portion 41 of the bank portion 4 projects above the seat surface 31 of the main body portion 3, a seated person sitting on the seat surface 41 does not laterally shift in the vehicle width direction by the bank portion 4. To be retained.

When the seated person gets off the vehicle, the operation switch may be turned on. This ON operation causes the air cylinder 62 to contract, the horizontal axis d is pulled by this contraction operation, and the second operating piece 64 rotates in the clockwise direction in FIG. 5 about the horizontal axis e, and the link member 61a.
The operating force is transmitted via the horizontal axis c, which is a connection point with the first operating piece 63, and the link member 61a is rotated about the horizontal axis a in the clockwise direction in FIG. When the air cylinder 62 is in the contracted state, the link member 61a is in the upright state, and the main body portion 3 and the seat back 2 connected to the main body portion 3 are held in the riding state in which they are elevated from the normal state. In this boarding / alighting state, the seat surface 31 of the main body portion 3 is arranged higher than the upper end portion 41 of the bank portion 4, so that the bank portion 4 does not become an obstacle when getting off from the seat surface 31. .. Similarly, when the passenger gets on the vehicle, the operation of the operation switch is turned on to bring the main body 3 into the getting on / off state, so that the bank portion 4 does not become an obstacle. After the ride, the main body 3 is restored to the normal state by turning off the operation switch, so that the seated person is held in a state in which lateral displacement is restricted.

As described above, in this embodiment, since the body portion 3 of the seat bottom 1 is kept in a normal state when the seated person is seated, the bank portion 4 does not laterally shift the seated person's body. Can be held securely. At the time of getting on and off, the main body 3 can be put in and out by turning on the operation switch of the lift means 6, so that the user can get on and off smoothly.

Moreover, since the conversion of the main body portion 3 between the normal state and the entry / exit state is simply an ON / OFF operation of the operation switch, the work can be easily performed.

Further, in the above embodiment, the air cylinder 62
In the OFF state of the first operating piece 63 and the second operating piece 6
4 is arranged so as to regulate the rotation of the link member 61a in the fall direction (counterclockwise direction in FIG. 5), so that the main body 3 is supported in a normal state without providing a special stopper member or the like. It can be carried out. Further, as a result, in order to maintain the normal state, it is not necessary to drive the air cylinder 62 in order to keep it in the extended state, and the labor can be saved accordingly.

Other aspects of the above embodiment will be described below.

A. Although the parallel link member or the air cylinder is used as the lift means in the above embodiment, the lift means is not limited to this, and may be formed using, for example, an X-type link member, a hydraulic cylinder, or an electric motor. ..

B. In the above embodiment, the air cylinder is used as the lift means. However, the lift means is not limited to the air cylinder. The conversion may be manually performed.

C. In the above embodiment, the seat surface is configured to be higher than the upper end portion of the bank in the getting on / off state, but the present invention is not limited to this, and for example, both may have the same height, Further, it may be configured to be slightly lower than the upper end of the bank. Even if it is in a lower level, it is sufficient that the bank does not become a substantial obstacle for getting on and off.

[0023]

As described above, according to the automobile seat of claim 1 of the present invention, when the main body portion is in the normal state, the bank portion projects above the seat surface. It is possible to securely hold the seated person's body so that it does not laterally shift, and by raising the main body part by the lift means to the getting on and off state, it becomes easier to get on and off as much as the seat surface rises, It can be done smoothly.

According to claim 2, the above-mentioned claim 1
In addition to the effect of the above, the parallel link member can be undulated by vertically expanding and contracting the cylinder to move the main body part up and down. This makes it possible to easily and surely construct the lift means for converting the main body portion into the normal state and the getting-on / off state.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the seat of the above embodiment.

FIG. 3 is a perspective view showing lift means.

FIG. 4 is an exploded perspective view of the lift means.

5 is an enlarged view of the front link member and the like in FIG. 1. FIG.

FIG. 6 is a cross-sectional explanatory view showing a conventional automobile seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat bottom 2 Seat back 3 Body part 4 Bank part 6 Lifting means 7 Car body 31 Seat surface 41 Upper part of bank part 61a, 61b Parallel link member 62 Air cylinder 613 Middle part of front parallel link member

Claims (2)

[Claims] 1. A vehicle seat comprising a seat back and a seat bottom, wherein the seat bottom is supported by a vehicle body such that a main body portion having a seat surface is formed and both sides of the main body portion in the vehicle width direction. And a lift means for moving the main body portion up and down. The main body portion is supported by the vehicle body via the lift means, and the lift means includes the main body portion whose seat surface is the bank portion. A vehicle seat, which is configured to be convertible between a lower normal state and a riding state in which the seat surface is raised above the normal state. 2. The lift means comprises a parallel link member and a cylinder for rotationally driving the parallel link member, and one end of the cylinder is a vehicle body or a main body portion.
The vehicle seat according to claim 1, wherein the other end is connected to an intermediate portion of the parallel link member, and the parallel link member is arranged so as to be undulated by expansion and contraction of a rod.