JPH11123965A - Seat with lifting means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To incline the back face of a seatback forward until it becomes horizontal. SOLUTION: A hinge 4, which supports the lower face of a seat cushion 1 so as to turn at a fixed interval to a floor panel 3, is formed at the rear end of the lower face of the seat cushion 1 of a seat with a seatback 2 which can be turned forward. A lifting means consisting of a lifter 5 for lifting the seat cushion 1 is provided on the front end of the lower face to lower the front end of the seat cushion 1 until the back face of the seatback 2 becomes horizontal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a seat that can be turned forward in a vehicle having a luggage room.

[0002]

2. Description of the Related Art Conventionally, as an example of this type of sheet, the invention disclosed in Japanese Patent Application Laid-Open No. 5-221256 has been known. According to the present invention, like the seat 23 shown in FIGS. 4 and 5, the seat back 24 is tilted forward with respect to the seat cushion 27 so that the back surface 21 of the seat back 24 is horizontal. The disk plate 25 is pulled out from the back surface 21 of the camera and the surface is intended to be used as an office desk.

[0003]

However, in the conventional seat 23, the lower surface of the seat cushion 27 is installed parallel to a floor panel surface (not shown).
When the seat back 24 is moved forward with respect to the seat surface of the seat cushion 27, the seat back 2 having a normal shape is used.
In 4, the rear surface 21 of the seat back 24 that has been moved forward tilts, so in order to make the rear surface 21 horizontal, it is necessary to form the backrest surface of the seat back 24 into a shape corresponding to the seating surface of the seat cushion 27. Yes, for this,
There is a problem that the thickness of the cushion of the seat back 24 is reduced, the cushioning property is impaired, and the original riding comfort cannot be obtained.

[0004] Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a seat that can be moved forward until the back surface of the seat back becomes horizontal without impairing cushioning. .

[0005]

In order to achieve the above object, an invention according to a first aspect of the present invention provides a seat panel in which a seat back can be moved forward with respect to a seat cushion. And a hinge for rotatably supporting the seat cushion at a constant interval, and a lifting means for lifting and lowering the seat cushion at the front end of the lower surface.

In the present invention, the rear end of the lower surface of the seat cushion is maintained at a fixed height from the floor panel surface and is rotatable, the front end is movable up and down by an elevating means, and the front end of the seat cushion is lowered. By lowering the seat back, the rear surface of the seat back that has been moved forward can be made horizontal.

According to a second aspect of the present invention, there is provided a seat having the elevating means according to the first aspect, wherein the elevating means comprises a lifter for operating a link mechanism via a screw shaft which is rotated by a motor. And

According to the present invention, a simple structure is achieved by using a lifter comprising a link mechanism operated by driving a motor.

According to a third aspect of the present invention, there is provided a seat having the elevating means according to the first aspect, wherein the lifter has an up-and-down stroke capable of leveling the rear surface of the seat back which has been moved forward.

According to the present invention, the lifter has a stroke capable of lowering the rear surface of the seat back until the rear surface becomes horizontal when the front end is lowered with the rear end of the lower surface of the seat cushion as a rotation axis.

According to a fourth aspect of the present invention, there is provided a seat having the elevating means according to the first or second aspect, further comprising a sensor between the seat back and the seat cushion for detecting the forward or backward standing of the seat back. The seat cushion is raised and lowered by the signal.

According to the present invention, the sensor detects that the seat cushion has been moved forward or raised, and the lifter can be automatically operated based on the signal.

According to a fifth aspect of the present invention, there is provided a seat having the elevating means according to any one of the first to fourth aspects, wherein the rear surface of the seat back which is tilted forward horizontally has a height which is flush with the luggage floor. It is characterized by having done.

According to the present invention, the rear surface of the seat back which has been moved forward is made flush with the luggage floor, so that the area of the luggage floor can be enlarged and used.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention. FIG. 1 is a side view of a seat, and FIGS. 2 and 3 are views showing the operation of the seat.

As shown in FIG. 1, a seat cushion 1 in a rear seat having a seat back 2 which can be tilted forward.
The rear end of the lower surface is maintained at a predetermined height from the floor panel 3 and is rotatably supported by a hinge 4, and a lifter 5 serving as an elevating means for elevating the seat cushion 1 is provided at the front end of the lower surface.

The lifter 5 includes a motor 6, a screw shaft 7 rotated by driving the motor 6, and a link mechanism 8 operated via the screw shaft 7. The link mechanism 8 includes a link 8
a is rotatably connected to the lower surface of the seat cushion 1, one end of the link 8b is rotatably connected to the surface of the floor panel 3, and the other end of each of the link 8a and the link 8b is a female screw 8c.
, And the front end of the seat cushion 1 can be raised and lowered by moving the female screw 8c left and right by the rotation of the screw shaft 7.

As shown in FIG. 2, between the seat back 2 and the seat cushion 1, the seat back 2 is provided.
A sensor 9 for detecting the forward or standing of the vehicle is provided, and the motor 6 is operated by the detection signal of the sensor 9 so that the link mechanism 8
Allows the front end of the seat cushion 1 to be automatically raised and lowered.

Then, as shown in FIG. 3, the height of the hinge 4 and the lifter are adjusted so that the rear surface 2a of the seat back 2 which has been moved forward is horizontal, and the height of the rear surface 2a is the same as the surface of the luggage floor 10. 5 ascending and descending strokes are set.

Next, the operation of the seat having this configuration will be described.

As shown in FIG. 2, when the seat back 2 is moved forward, the sensor 9 detects that the seat back has been moved forward, and the motor 6 is actuated to automatically lower the lifter 5 according to the detection signal. Lower the front end.

As a result, as shown in FIG. 3, the rear surface 2a of the seat back 2 which has been moved forward is horizontal and is flush with the surface of the luggage floor 10.

Also, as shown in FIG.
Is raised in the use position, it is sensed that the sensor 9 has risen, and the lifter 5 automatically operates by the detection signal to return the front end of the seat cushion 1 to the original horizontal position.

[0025]

According to the first to third aspects of the present invention, the rear end of the lower surface of the seat cushion is configured to be rotatable while maintaining the rear end thereof at a fixed height from the floor panel surface, and the front end is lowered by a lifter as an elevating means. By lowering the front end of the seat cushion, it becomes possible to level the rear surface of the seat back that has been moved forward. Further, the lifter can be configured at a low cost by using a simple link mechanism.

The effect of claim 4 is that the operation is easy because the sensor detects that the seat cushion is moved forward and upright and the front end of the seat cushion is automatically raised and lowered.

According to the fifth aspect of the present invention, the rear surface of the seat back which has been moved forward is flush with the luggage floor, so that the area of the luggage floor can be enlarged and used.

[Brief description of the drawings]

FIG. 1 is a side view of a seat showing an embodiment of the present invention.

FIG. 2 is a side view showing the operation of the seat.

FIG. 3 is a side view showing the operation of the seat.

FIG. 4 is a side view of a conventional seat.

FIG. 5 is a side view of a conventional seat.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seat cushion 2 seat back 3 floor panel 4 hinge 5 lifter 6 motor 7 screw shaft 8 link mechanism 9 sensor 10 luggage floor

Claims (5)

[Claims] 1. A seat cushion with a seat back that can be tilted forward with respect to a seat cushion.
A hinge is provided for rotatably supporting the lower surface of the seat cushion with a predetermined interval with respect to the floor panel, and an elevating means for raising and lowering the seat cushion is provided at a front end of the lower surface. Sheet. 2. A seat having a lifting means according to claim 1, wherein said lifting means comprises a lifter which operates a link mechanism via a screw shaft which is rotated by driving a motor. Having sheet. 3. The seat having the lifting means according to claim 1 or 2, wherein the lifter has a lifting step capable of leveling a back surface of a seat back that has been tilted forward. Sheet. 4. A seat having the elevating means according to claim 1 or 2, further comprising a sensor between the seat back and the seat cushion for detecting the forward or backward standing of the seat back, and using a signal from the sensor. A seat having lifting means, wherein the seat cushion is raised and lowered. 5. A seat having the elevating means according to claim 1, wherein a rear surface of the seat back which is tilted forward horizontally has a height equal to the luggage floor. A sheet having a lifting means.