JPH0712164Y2 - Vehicle seat - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention is for a vehicle in which a seat back is tiltably supported in an upright position and a forward tilted position at an installation location to enhance the ability to get in and out of a seat rearward. Regarding the seat.

"Prior Art" Conventionally, as a vehicle seat of this type, for example, there is one as shown in FIG.

That is, the seat back 2 is supported on the rear end portion of the seat cushion 1 via the base member 3 so as to be able to tilt forward, and the front end portion of the base member 3 connected to the intermediate portion of the seat cushion 1 in the front-rear direction is centered. By inclining the seat back 2 forward, a space behind the seat back 2 is secured.

[Problems to be solved by the invention] However, in such a conventional vehicle seat, since the seat back 2 leans forward around an intermediate portion of the seat cushion 1 in the front-rear direction, the seat back 2 leans forward. When this is done, the rear end portion of the seat cushion 1 is left behind, and the rear end portion of the seat cushion 1 becomes an obstacle when getting in and out of the rear of the seat, which is not good for getting on and off. was there.

The present invention has been made in view of such a conventional problem, and the seat back is tilted forward by the biasing force only when the seat cushion bounces up from the installation position. It is an object of the present invention to provide a vehicle seat that can secure a sufficient space behind the seat and can improve the ease of getting on and off without the end being left behind.

[Means for Solving the Problem] The gist of the present invention for achieving such an object is to allow a seat back to be tilted between a standing position and a forward tilt position through a base member of a reclining device at an installation location. In a vehicle seat that supports and enhances the ability to get in and out of the seat rear, the seat back is biased in a direction in which the seat back is tilted forward, and the seat cushion is brought into contact with the base member of the reclining device to seat the seat back. The seat cushion is supported so that it can be displaced between a seating position that restrains the standing position against the biasing force and a jumping position where the rear end of the seat cushion jumps up around the front end of the seat cushion. The vehicle seat is characterized by comprising a lock mechanism for restraining the vehicle from the seated position so that the vehicle cannot jump up.

[Operation] When the seat is in the sitting posture, the seat cushion is in a substantially horizontal seating position and abuts against the seat back to restrain the seat back in the standing position against the biasing force.

At this time, the seat cushion is constrained to the seated position by the lock mechanism so as not to jump up.

When the lock mechanism is released and the rear end of the seat cushion jumps up around the front end of the seat cushion, the seat cushion separates from the seat back and the seat back tilts forward due to the biasing force to the forward tilt position. Become.

As a result, the rear end of the seat cushion is not left behind and a sufficient space behind the seat is secured.

In order to return the seat to the seated posture, the seat back is tilted rearward against the biasing force to the standing position, and the seat cushion that was in a jumped up state is tilted rearward and brought into contact with the seat back.

Next, when the lock mechanism is operated, the seat cushion is constrained to the seating position so that the seat cushion cannot jump up, and the seat back is constrained to the standing position so that the seat back cannot lean forward.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.

Seats on the floor 10 of the vehicle, as shown in FIGS. 1 and 2.
20a is supported via a seat slide device 30a so that the front-back position can be adjusted. The seat slide device 30a includes a pair of rail units 30 arranged below both side portions of the seat cushion 20.

The rail unit 30 includes a support bracket 11 on the vehicle body floor 10.
A vehicle body side rail 31 fixedly mounted via the vehicle body side rail, and a seat side rail 32 that is fitted to the vehicle body side rail 31 so as to be movable back and forth and supports the seat cushion 20.

A seat back 21 is supported by a seat side rail 32 via a reclining device 40 so that the tilt angle can be adjusted. The base member 41 of the reclining device 40 is extended forward,
The front end portion 42 of the base member 41 has a front-rear intermediate portion 33 of the seat-side rail 32 so that the seat back 21 can be tilted forward.
Is pivotally supported by a pin member 43.

The seat back 21 is biased by a spring member (not shown) in a direction of tilting from the standing position to the forward tilt position.

Base portions of the short link member 51 and the long link member 52 are pivotally attached to the front portion 34 of the seat-side rail 32, and the front end portions of the short link member 51 and the long link member 52 are respectively seat cushions. It is rotatably connected to 20 frames 22.

Frame 22 of seat cushion 20, rail 32 on the seat side,
The seat cushion 20 is configured such that the rear end portion 24 of the seat cushion 20 jumps up with the front end portion 23 thereof substantially at the center by a four-bar rotary chain composed of the short link member 51 and the long link member 52.

The rear end portion of the frame 22 of the seat cushion 20 is in contact with the base member 41 of the reclining device 40 so that the seat back
A stopper member 25 capable of restraining 21 in the standing position without being tilted forward is fixed.

At the rear end 35 of the seat-side rail 32, the seat cushion 20
A lock mechanism 60 for restraining the rear end portion 24 of the rear end portion 24 from jumping up is attached.

A striker 26 is fixedly mounted on the rail 32 on the seat side, and a latch member 61 for restraining the seat cushion 20 from flipping up is supported by swinging on the rear end portion 24 of the seat cushion 20 and engaging with and disengaging from the striker 26. Has been done. The latch member 61 is biased in a direction to engage with the striker 26 by a spring member (not shown).

Next, the operation will be described.

In FIG. 2, the seat 20a is in the seated position. At this time, the stopper member 25 is in contact with the base member 41 of the reclining device 40, and the seat back 21 is restrained in the standing position without being able to lean forward.

At this time, the latch member 61 is engaged with the striker 26, and the seat cushion 20 is constrained so that it cannot jump up.

When the latch member 61 is operated against the urging force of a spring member (not shown) in order to get on and off, and the seat cushion 20 is released from the striker 26, the seat cushion 20 is released from the restraint and can be flipped up.

When the seat cushion 20 is flipped up, the stopper member 25 is separated from the base member 41, and the base member 41 is pinned by the pin member 43.
The seat back 21 can be tilted forward because it can be swung about.

Next, the rear end portion 21 of the seat cushion 20 jumps up around the front end portion 23, and the rear end portion of the seat cushion 20
When 24 passes through so as to grab the front side of the seat back 21, the base member 41 swings back and forth around the front end portion 42 by a biasing force (not shown), whereby the seat back 21 gradually moves forward. Tilt.

When the seat cushion 20 greatly jumps up to the jumping position, the seat back 21 tilts back and forth to the forward tilt position.

This ensures a sufficient space behind the seat 20a.

In order to return the seat 20a to the seated posture, the seat back 21 is raised from the forward leaning position against the biasing force, and the seat cushion 20 is tilted rearward from the jumping position, so that the stopper member 25 contacts the base member 41. In contact with each other, the base member 41 is constrained so as not to swing.

Next, when the latch member 61 is engaged with the striker 25, the seat cushion 20 is constrained to the seating position so that it cannot jump up, and the seat back 21 is constrained to the standing position so that the seat back 21 cannot lean forward and is initially seated. Return.

In the above embodiment, since the base member 41 of the reclining device 40 is swingably supported on the seat side rail 32,
The seat back 21 can be folded down without requiring a special member, and the cost can be reduced.

[Advantage of Invention] According to the vehicle seat of the present invention, the seat cushion is supported at the installation location so that the rear end of the seat cushion can be lifted up with its front end substantially at the center, and the seat cushion can be lifted up for the first time. Since the back is tilted forward due to the biasing force, the rear end of the seat cushion is not left behind when getting on or off, and it does not get in the way, and a sufficient space behind the seat can be secured. It is possible to improve the boarding / alighting property.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a vehicle seat, FIG. 2 is a side view of the same, FIG. 3 is a side view of the same, and FIG. [Fig. 6] shows a conventional example, and is a side view of a vehicle seat. 10 …… Vehicle floor 20a …… Seat 20 …… Seat cushion 21 …… Seat back 25 …… Stopper member 26 …… Strike 30a …… Seat slide device 30 …… Rail unit 31 …… Vehicle side rail 32 …… Seat Side rail 40 …… Recliner 41 …… Base member 51 …… Short link member 52 …… Long link member 60 …… Lock mechanism

Claims (1)

[Scope of utility model registration request] 1. A vehicle seat in which a seat back is tiltably supported between a standing position and a forward leaning position via a base member of a reclining device at an installation location to enhance the ability to get in and out of a seat rearward. The seat cushion at the seating position where the seat cushion is abutted against the base member of the reclining device to restrain the seat back at the standing position against the biasing force, and the front end portion of the seat cushion. A lock mechanism is provided which is displaceably supported in a jumping-up position in which a rear end portion of the seat cushion is about to be centered up and is disengaged from the seat cushion to restrain the seat cushion from jumping up to the seating position. Vehicle seats.