JPH03262738A - Seat slide interlocking type variable-seat device - Google Patents

Abstract

PURPOSE:To easily and correctly perform the variable adjustment of a seat by determining the standard seated body form based on the slide position of a seat cushion, and controlling a seat back and the seat cushion in response to this body form. CONSTITUTION:A driver is seated on a seat 4, operates a seat slide switch 32, slides the seat 4 to the position easy to drive, then turns on a set switch 43. The seat slide position thus set is read into the RAM of a CPU not shown in the figure. A seat height device 6 and a reclining device 20 are controlled respectively by an ECU not shown in the figure, and respective motors 8a, 8b, 21 are driven. A seat back 5b and a seat cushion are displaced respectively to obtain the proper reclining angle and height position. Individual displacements are detected by individual sensors and fed back to the CPU.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a variable seat device used in automobiles and the like, in which the seating position can be adjusted.

(Prior art) Seat front and rear positions to obtain an appropriate seat position;
The vertical position, the inclination of the seat back, etc. differ depending on the physique of the driver.

Therefore, in automobiles, seat cushions that can be slid forward and backward, and even moved up and down, have traditionally been equipped with seat cushions.
A seat device combined with a reclining seat back is used to allow a driver to adjust the position to suit his/her physique.

(Problem to be solved by the invention) However, in order to obtain an appropriate driving position with such a seat device, the driver must individually adjust the slide of the seat cushion, the seat position, and the reclining angle. Therefore, adjusting the position was troublesome.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to provide a variable seat device that is interlocked with a seat slide and allows the user to easily adjust the position that suits him/her.

(Means for Solving the Problems) In order to achieve the above object, the variable seat device of the present invention combines a seat cushion that is slidable in the front-back direction and movable in the vertical direction and a seat back that is reclinable. a seat constituted by a seat; a seatback driving means for rotationally driving the seatback in the front-rear direction;
height driving means for driving the seat cushion in the vertical direction; body shape determining means for determining a standard seated body shape at the sliding position from the sliding position of the seat cushion; An interlocking drive means for driving the drive means is provided.

(Function) According to the variable seat device of the present invention, when the driver sits on the seat and slides the seat in the longitudinal direction to a position that is appropriate for the driver, the standard seating shape is determined only from the sliding position. Then, the seatback drive means and the height drive means are driven in accordance with this standard seating body shape, and the refly nib angle and seat surface height are adjusted to positions that match the standard seating body shape.

In other words, the driver simply adjusts the sliding position of the seat, and the seat is automatically adjusted to the appropriate seat height and recline angle for the driver.

Therefore, the only adjustment operation is to adjust the slide position, and the position adjustment becomes easy.

In particular, in this invention, the seat slide position is used as the standard for setting the standard seating configuration, but this is because the distance to the steering wheel can be adjusted by adjusting the reclining angle, and rearward visibility can be secured by adjusting the mirror. On the other hand, accelerator pedals, brake pedals, etc. are generally not adjustable, so it is necessary to be able to operate each pedal safely, and securing appropriate forward visibility is greatly affected by the front and back position of the seat. First, after adjusting the seat slide position, the seat back tilt and vertical position are automatically adjusted.

(Example) The present invention will be described below based on an example shown in FIGS. 1 to 5. FIG. 1 shows the front side of an automobile to which the present invention is applied, where 1 is the cabin of the automobile and 2 is the front door. A variable seat device 3 is installed on the driver's side of the cabin 1. The variable seat system rIt3 is composed of a combination of a seat structure and a control system that controls the seat structure.

[Seat structure] Tribirds seat 4 (hereinafter simply referred to as the seat) is
It is configured by providing a seat cushion 5a that is slidable in the front-rear direction and movable in the up-down direction, and a seat back 5b that can be reclined. Inside the seat cushion 5a, there are a front seat height device 6 that drives the front part of the seat cushion 5a in the vertical direction, and a rear seat height device 7 that drives the rear part of the seat cushion 5a in the vertical direction. (Both height driving means) are provided. The seat height device 6.7 includes a lifting mechanism 10 driven by a motor 8 (shown in FIG. 2), a sensor 11 (shown in FIG. 2) that detects the height position, and a height adjustment area. It is constructed by combining limit switches 12 and 13 (shown in FIG. 2) for stopping the motor drive at the upper limit position and the lower limit position. In addition, in order to distinguish between the front seat height device 6 and the rear seat height device 6.7 in the drawings, the parts of the front seat height device 6 are given the suffix raJ, and the parts of the rear seat height device 6 are The symbol rbJ is added to the end of the word.

Furthermore, a seat slide device W14 for slidingly driving the seat 4 in the front-rear direction is provided inside the seat cushion 5a. This seat slide device 14 includes a slide mechanism 16 using a motor 15 as a drive source, a sensor 17 (shown in FIG. 2) that detects the seat slide position, and a motor that stops driving at the front and rear end positions of the slide area. It is constructed by combining limit switches 18 and 19 (shown in FIG. 2) for controlling the load.

Further, inside the seat 4, there is a reclining device 20 for rotationally driving (reclining) the seat back 5b in the front-rear direction.
(seat back driving means) is also provided. This reclining device 20 includes a tilting mechanism 22 using a motor 21 as a driving source, and a sensor 23 that detects the reclining angle.
It is composed of a combination of. [Control System The circuit shown in FIG. 2 is used in the control system. In other words, 30 is the CPU 30a connected to the CPU 30a and the RAM 30b connected to the CPU 30a.
It is an ECU with a built-in The seat height devices 6, 7, seat slide device 14, and reclining device 20 are connected to this ECU 3O.

Further, 31 is an operation panel provided, for example, on the side of the seat cushion 5a on the door side. This operation panel 31 includes a seat slide switch 32 for operating the seat 4 in the longitudinal direction, a front seat height switch 33 for raising and lowering the front side of the seat cushion 5a, and a rear seat height switch 33 for raising and lowering the front side of the seat cushion 5a. Side seat height switch 3
4 and a seat reclining switch 35 for reclining the seat. These switch groups are connected to the ECU 3O, and by turning each switch on and off, the seat 4 can be manually slid, raised (forward/backward), or refried. There is.

The CPU 30a includes each of the sensors 11a.

A counter is provided to count the detection signals from 11b and 17.23. Specifically, the CPU 30a includes a slide counter 36 that counts the amount of slide, and a tilt counter 37 that counts the amount of inclination of the seat back 5b.
, a height (front) counter 38 that counts the height amount on the front side, and a height (rear) counter 40 that counts the height amount on the rear side.

Further, data necessary for determining a standard seating shape as shown in FIG. 3 is inputted into the RAM 30b as a map. Specifically, this data is based on an investigation of how the standard drive position relates to the seat height and leg length to changes in the seat slide position. As a result, it was found that the sitting height of the standard drive position becomes appropriate for most people by increasing the reclining angle from a certain position as the amount of seat slide increases. It was found that if the front and rear heights, which determine the leg condition in the drive position, are lowered from a certain position as the seat slide amount increases, the height will be appropriate for most people. Therefore, these data must be input in advance as a body shape map. Note that the diagram showing the height on the front side stagnates near the rear end of the seat slide position, and then increases as the seat slide position increases, but this is at the limit of the variable height range. On the other hand, to ensure a comfortable posture, the thighs are placed high, allowing even people with fairly long legs to maintain an appropriate driving position.

On the other hand, an operation panel 42 installed near the room mirror 41, for example, is connected to the ECU 3O. This operation panel 42 is provided with a set switch 43. The ECU 3O is set to be able to operate the seat height device 6.7 and the reclining device 20 independently (independently) until the set switch 43 of the operation panel 42 is turned on. When the ON operation is performed, the CPU 30b sends the seat height device 6,
7 and the reclining device 20, the RAM 30 is
8a to each motor so that each reclining angle and front and rear height correspond to the seat slide position stored in b.
, 8b, and 15 are output.

Note that in the drawings, 46 indicates a steering wheel.

Next, the operation of the variable seat device 3 configured as described above will be explained based on the flowchart shown in FIG. 4.

When the driver adjusts the drive position, the driver first sits on the seat 4 through the front door 2. Next, operate the seat slide switch 32 disposed on the side of the seat as indicated by "Sl" to position the pedals 45 (accelerator pedal, brake pedal, etc.) for easy operation as shown in FIG. Then seat 4 is electrically slid. The seat slide position at this time is CPU30
At step a, it is determined according to the detection signal output from the sensor 17.

Then, when the seat slide adjustment is finished, press "S2"
Turn on the set switch 43 as shown in . Then, the seat position ts determined by the CPU 30a is stored in the RAM 3.
0b is loaded, and as shown in "S3", the optimal seat back angle position (
The reclining angle θ), the height (front) HF, and the height (rear) HR (all height positions) are determined using a map (shown in FIG. 3) stored in the RAM 30b. For example, if the seat slide position is slid from ``position (a)'' to ``position (b)'' in Figure 3, the position of each angle from the map will be the Q point corresponding to position (b). Similarly, the optimum positions are set at the R position where the height (front) HF is slightly higher, and the S point position where the height (rear) HR is also slightly higher.

Next, a drive signal is outputted from the ECU 30a to the seat notebook device 6゜7 and the reclining device 20.
As shown by "S5" to "S7", the motor 8a of each device
, 8b, and 21 are turned on.

As a result, the above-mentioned reclining angle θ, node (front) H
As shown by the two-dot chain line in Fig. 5, as shown by the two-dot chain line in Fig. 5, the engine position 5b rises from its initial state, and the entire engine position 4b lifts up to reach the positions of F and height (rear) HR. Seat position: high).

The displacements of the seat back 4a and seat cushion 4b at this time are measured by the sensors 2B and lla.

11b to the CPU 30a.

Based on this feedback, the seat back 4a
When the seat back 4a reaches the Q point position, the CPU 30a determines that the seat back 4a has been set to an appropriate position, as indicated by "S8", and the reclining device 20
motor 21 is stopped. Similarly, when the front and rear height positions of the seat cushion 4b are raised to the R and S positions, the CPU 30. a determines that the front and rear height positions of the seat tension 4b are set to appropriate positions as shown by rS 10J and rS 12J, and activates each motor lla of the seat height devices 6 and 7.
, llb is stopped.

When all of these adjustments of the seat 4 are completed as indicated by rS 13J, the control for adjusting the seat position to an appropriate position based on the sliding position of the seat 4 is completed.

That is, by simply adjusting the sliding position of the seat 4, the seat height and reclining angle are automatically set to appropriate positions. According to experiments, a person with a normal body shape has a
% to 90%, and it was possible to set one's own position without requiring any fine adjustment.

Therefore, the adjustment operation by the driver is almost completed by simply adjusting the slide position, and the height and seat back can be adjusted only when necessary, so position adjustment is extremely easy.

In the above embodiment, the present invention is applied to the driver's side seat, but it goes without saying that the present invention is not limited to this and may also be applied to the passenger side seat, rear side seat, etc. Nor.

[Effects of the Invention] As explained above, according to this invention, the driver simply adjusts the slide position of the seat, and the seat height and reclining angle are automatically adjusted to an appropriate position that suits the driver. I can do it.

In other words, you can very easily adjust the position that suits you.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention.
The figure is a perspective view showing the variable seat device installed in a car, Figure 2 is a diagram showing the control system, Figure 3 is a diagram showing the correlation between the seat slide position, seat back angle position and height, and Figure 4 is the seat A flowchart showing the progress of adjustments,
FIG. 5 is a diagram showing the state of the seat back and seat cushion that are adjusted according to the seat slide.

Claims (1)

[Claims] a seat configured by combining a seat cushion that is slidable in the front-rear direction and movable in the up-down direction and a seat back that is reclinable; a seat back drive means that rotationally drives the seat back in the front-rear direction; height driving means for driving the seat cushion in the vertical direction; body shape determining means for determining a standard seated body shape at the sliding position from the sliding position of the seat cushion; and height driving means for driving the seat back and height according to the standard seated body shape A variable seat device that is interlocked with a seat slide, comprising an interlocking drive means for driving a drive means.