JPS5849862Y2 - seat lifting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat elevating device, and is particularly suitable for application to a driver's seat in an automobile or the like.

Conventionally, seats in automobiles, etc. have only been configured so that they can be moved forward and backward and the inclination of the seat back can be adjusted, and the seats have not been able to satisfy the demands of a wide range of posture changes depending on the body shape and preferences of the occupant. I couldn't.

In particular, drivers are forced to drive in an uncomfortable position because they cannot find a seat that suits their height and body shape, which causes fatigue when driving for long periods of time.

Therefore, in order to eliminate the conventional drawbacks, the present invention provides a seat lifting device that allows adjustment of the overall height of the seat cushion and separate adjustment of the front and rear heights, that is, inclination adjustment. It is something to do.

An embodiment of the device of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 indicates the entire seat, and the seat 1 is constructed by connecting a seat cushion 2 and a seat back 3 by a reclining device 4, and a seat frame 5 of the seat 1 is equipped with a lifting device 6 of the present invention.

This elevating device 6 is comprised of left-right symmetrical operating parts 7, 7'.

That is, the upper frame 8 fixed to the seat frame 5
, 8' and the lower frames 9, 9' disposed on the floor side have buttons 10, 1 at the front and rear thereof as supporting means.
1, 10', 11', and this link 10,
11,10'.

The upper frames 8, 8' are raised, lowered and tilted relative to the lower frames 9, 9' by raising and lowering the upper frames 11' by the interlocking operation means 12.

Links 10, 11, 10', 11' are the main link pieces 1, respectively.
0a, 11a, 10a', lla' and auxiliary link piece 10
Consists of main link pieces 10a, 11a, 10a', 11a.
The upper end of the upper frame 8, 8' is pivotally connected to the front and rear ends of the upper frames 8, 8' by shaft pins 13, 14, 13', 14', and the lower end is attached to the front and rear ends of the lower frame 9, 9'. The main link pieces 10a and lla, and 10a' and 11a' are arranged so as to correspond to each other in the shape of an intrusion character, engaging with the elongated holes 15, 16, 15', and 16' in the directions.

These main link pieces 10a, 11a, 10a',
11a' is engaged with the elongated holes 15°16.15' and 16' by horizontally spanning between the lower frame 9 and the gamma groove, and both ends thereof are engaged with the elongated holes 15°15', 16, 16'. This is achieved by pivotally attaching the front moving rod 17 and the rear moving rod 1B to both ends thereof.

Also, an auxiliary link piece 10b. 11b, 10b', llb'
The upper end is the main link piece 10a.

11a, 10a', 11a' are pivotally connected to the substantially intermediate portions by shaft pins 19, 20, 19', 20', and the lower ends are connected to the front and rear ends of the lower frame 9,9' by shaft pins 21, 22, 21', 22'.

The interlocking operation means 12 consists of a screw shaft lever 23 and a screw tube 24, and the screw tube 24 is screwed into a nut 26 fixed to the front frame 25 between the front ends of the lower frames 9, 9'.
The threaded shaft rod 23 is rotatably inserted into the threaded cylinder 24, passes through the front side moving rod 17 and the rear side moving rod 18, and extends rearward, and the portions penetrating both rods 17 and 18 are oriented in opposite directions. The through screw holes 17a and 18a of both rods 17 and 18 are provided with screw portions 23a and 23b.
The screw shaft rod 23 is axially locked to both front and rear end surfaces of the screw tube 24 by locking bodies 29 and 30 via thrust washers 27 and 28.

An operation dial 31 integral with the locking body 29 is fixed to the front end of the screw shaft 23, and an operation dial 32 having a larger diameter than the operation dial 31 described above is attached to the front end surface of the screw tube 24.
are integrally provided.

Next, to explain the operation of this example configured as described above, first, when the screw shaft rod 23 is rotated clockwise using the operation dial 31, the front side moving rod 17 is screwed into the screw portion 23a.
is moved forward, while on the other hand, the rear moving rod 1
8 is moved rearward by the threaded portion 23b in the opposite direction to the threaded portion 23a described above, so that the links 10, 11, 10
', 11' are respectively rotated in the standing direction.

That is, the main link pieces 10a, lla, 10a', 11a' are connected to the upper frames 8, 8' by the shaft pins 13, 14,
13'.

The auxiliary link pieces 10b, 11b, 10b',
11b' is the lower frame 9 as the main link piece rotates.
The upper frames 8, 8' are raised parallel to the lower frames 9, 9' (the first (Dotted chain line in Figure 5A) The height of the seat cushion 2 of the seat 1 from the floor is increased.

Further, when the screw shaft rod 23 is rotated to the left, the front moving rod 17 is moved rearward, contrary to the above-mentioned operation.

On the other hand, the rear moving rod 18 is moved forward, and therefore each link piece of links 10, 11, 10', 11' is rotated in the direction of collapse, and the upper frame 8° 8' is lowered (5th (Double-dot chain line in Figure A) The seat cushion 2 is set at a low position.

In this way, by rotating the screw shaft rod 23 left and right using the operation dial 31, the link 10°11.10'
, 11' are rotated up and down, and the height of the seat cushion 2 of the seat 1 is adjusted by raising and lowering the upper frames 8, 8' accordingly.

Next, when the screw tube 24 is rotated in the screwing direction with respect to the nut 26 using the operation dial 32, the screw shaft rod 23 is moved rearward as the screw tube 24 is screwed in, and at this time, the screw shaft rod 23 is moved backward.
3 is not rotated, so both plane moving rods 17 and 18 are moved rearward while their spacing is maintained.

Due to the parallel movement of both moving rods 17°18, that is, the rearward movement of the front side moving rod 17, the links i o and i
o' is rotated in the direction of lodging, and on the other hand, the links 11 and 11' are rotated in the direction of standing up due to the rear movement of the rear moving rod 18, so that the upper frames 8 and 8' are rotated in the direction of the collapse.
, 10' side, that is, the front side, the links 11 and 11 are lowered.
'llI, that is, on the rear side, it is raised and tilted forward (dotted chain line in Fig. 5B).

Further, when the threaded cylinder 24 is rotated relative to the nut 26 in the unscrewing direction, the threaded shaft rod 23 is moved forward, and both moving rods 1
7 and 18 are both translated forward and the front link 10
, 10' in the standing direction, and the rear links 11, 11
Therefore, the front sides of the upper frames 8, 8' are raised, the rear sides are lowered, and the upper frames 8, 8' are tilted forward (as shown by the two-dot chain line in FIG. 5B).

Therefore, the inclination of the seat cushion 2 is adjusted in the longitudinal direction by the longitudinal tilting movement of the upper frames 8, 8'.

As described above, by continuously performing both operations of the upper frames 8, 8', that is, the lifting and lowering operations and the tilting operation, the height, inclination direction and angle of the seat cushion 2 can be adjusted as desired.

In addition, in this example, links 10, 11, 1 are used as support means for supporting the upper frame 8° 8' in a vertically movable manner.
0' and 11', and a screw shaft rod 23 and a screw tube 24 are used as operation means for operating these, but the upper frames 8 and 8 are not limited to these configurations.
The upper frames 8, 8' are raised and lowered by operating the front support means and the rear support means symmetrically, which support the front and rear parts of the upper frames 8 and 8'. Any structure that can be tilted back and forth may be used.

Although it is possible to attach the lower frame 92g to a sliding rail device to adjust the movement of the seat cushion 20 in the front and back direction, this is not directly related to the present invention, so a description thereof will be omitted.

As described above, according to the present invention, the height of the seat cushion as a whole can be adjusted, and the height of the front and rear sides can be adjusted separately, that is, the front and rear inclination of the seat cushion can be adjusted. This can be done by operating only one operating screw, so the occupant can easily and quickly set the seat surface to suit the seating position according to their body shape and preferences. If applied, the driver will be able to adopt a driving posture that is most suitable for driving operations depending on his/her body type, and will be able to drive comfortably even for long periods of time without becoming fatigued, which will lead to safer driving. have

[Brief explanation of the drawing]

Figure 1 is a front view of a seat to which the device of the present invention is applied, Figure 2 is a side view of the same, Figure 3 is a plan view of an example of the device of the present invention, and Figure 4 is a portion of Figure 3. Omitted enlarged cross-sectional view along line I-I, No. 5
Figures A and B are explanatory diagrams of the operation of the device of the present invention. In the figure, 1 is a seat, 2 is a seat cushion, 6 is a lifting device, 8, 8' are upper frames, 9, 9' are lower frames, 10. il, 10', 11' are links as supporting means, 12 is an operating means, 17°18 is a movable rond, 2
3 is a screw shaft rod, and 24 is a screw tube.

Claims (1)

[Scope of utility model registration request] The upper frame installed on the seat cushion side is connected to the lower frame installed on the floor side via a rotation support mechanism at the front and rear, and the rotation support mechanism is connected to the lower frame installed on the floor side through a rotation support mechanism. A single screw shaft rod is rotatably supported by a screw tube that is screwed together so that it can move forward and backward in the direction, and is locked in the axial direction. In addition to being operated symmetrically, the screw shaft lever is moved in the front and back direction by the screw tube, so that the circumferential movement support mechanism is operated reciprocally, and the upper frame is caused to move in the circumferential direction relative to the lower frame. A seat lifting device characterized in that the seat cushion is raised and lowered by symmetrical movements of the dynamic support mechanism and tilted by the reciprocal movements of the rotary support mechanism to adjust the elevation and inclination of the seat cushion.