JPS6223645Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat adjustment device for adjusting the seat angle and height of a vehicle seat or other seat.

Conventionally, seat angle adjustment mechanisms for seats in automobiles, etc. have either used a hinge on the rear side of the seat and changed the height of the front side to adjust the seat angle, or adjusted the height of the front and rear sides of the seat respectively. In both cases, the hip point moves at the same time as the seat angle is adjusted, and in the latter case, the operability is very poor and it is not practical. It had the following characteristics.

In view of the above-mentioned drawbacks, the present invention aims to eliminate this problem by providing a seat angle adjustment mechanism that can adjust the seat angle without changing the hip point of the seater, and also maintains the seat angle. The present invention also provides a seat height adjustment mechanism that allows the user to change the height of the seat while keeping the seat in place. The gist of this invention to achieve this purpose is as follows:
Guide grooves are provided in the front and back directions on the lower surface of both sides of the front end of the seat frame consisting of a frame, and both ends of the horizontal rod are slidably fitted into the guide grooves, and both ends of the horizontal rod are slidably fitted into the guide grooves. and the support arm between the mounting bracket on the floor side,
Further, in a seat in which arm members are connected between both sides of the rear end of the seat frame and a mounting bracket on the floor side so as to be rotatable in the front and rear direction, at least one of the arm members is attached to the floor side. A lever section is provided that extends downward from the pivot point with the mounting bracket of the arm member, and the lever section of the arm member and the approximately central portion of the one support arm are connected to each other by a linkage consisting of two members connected by a turnbuckle. Connected with a rod to form a seat height adjustment mechanism,
By operating the turnbuckle of the seat height adjustment mechanism, the length of the connecting rod is changed, and the support arm and the arm member rotate in the same direction (forward or backward), and the seat frame is adjusted up and down. be.

Further, the seat angle can be adjusted by attaching a female screw member orthogonally to the horizontal rod, and screwing into the female screw member a seat angle adjustment screw arranged in the front and back direction of the seat frame. By configuring the mechanism, by rotating the seat angle adjustment screw, the support arm is rotated via the horizontal rod, and the arm is rotated in a direction different from that of the support arm by the connecting rod connected to this support arm. The angle of the seat frame in the front and back direction is adjusted by rotating the member.

Hereinafter, one embodiment of the seat adjustment device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a seat frame, and FIG. 2 is a front view thereof.

The seat has a frame 1 approximately in the shape of a seat cushion 2.
A back frame is pivotally mounted to the rear end of a seat frame consisting of a reclining hinge, and brackets 4, 4 are fixedly fixed downward from the rear ends of both side frames 1a, 1a, respectively. do.
On the other hand, mounting metal fittings 5, 5 are installed upright on the floor or a longitudinal position adjustment mechanism (not shown), which is the floor side facing the brackets 4, 4.

The lower ends of arm members 6, 7 are pivotally attached to the upper ends of the mounting fittings 5, 5 so as to be rotatable together with the rotation shaft 3, and the lower ends of these arm members 6, 7 serve as pivot parts. and,
A lever portion 6b extends below the pivot portion of one arm member 6.

Further, the swinging ends 6a, which are the upper ends of the arm members 6 and 7,
7a is pivotally connected to the brackets 4, 4 with pins 8, 8.

In the figure, reference numerals 9 and 9 indicate guide grooves made of metal plates having a U-shaped cross section and are fixed to the lower front sides of the side frames 1a and 1a so that the openings face each other. Or sliding pins protruding from the side of each tip of support arms 12, 13 rotatably pivoted via pins 11, 11, respectively, to mounting brackets 10, 10 erected on the longitudinal position adjustment mechanism. 14, 14 are slidably fitted into each other, and the other end of the connecting rod 15 is formed by rotatably pivoting one end approximately at the center of one of the supporting arms 12. Lever section 6 extending to the end
It is rotatably connected to b. Reference numeral 16 denotes a horizontal rod connecting the sliding pins 14, 14, and a female screw 18 screwed into a bracket 17 fixed at the center has a bearing member 19 fixed to the lower center of the front frame 1b. A male screw portion 20a of a seat angle adjustment screw 20 is rotatably supported and arranged in the front-rear direction of the frame body 1.
are screwed together, and the screwing position changes depending on the rotation of the rotation knob 20b.

The seat angle adjustment mechanism with the above configuration is the seat angle adjustment screw 2.
The angle of the frame body 1 is changed by turning the rotation knob 20b. That is, when turning the rotation knob 20b,
Due to the screwing action of the bracket 17 and the seat angle adjustment screw 20, both the sliding pins 14, 14 slide in the guide grooves 9, 9 via the horizontal rod 16, and at the same time, the support arms 12, 1
3 swings about the pins 11, 11, respectively, and the lever portion 6b of the arm member 6 acts through the connecting rod 15, so that the arm members 6, 7 fixed to both ends of the rotating shaft 3 are attached to the support. The arms 12 and 13 swing in the opposite direction. Therefore, when the tip of the frame 1 rises, the rear end descends in proportion to the amount of rise, and conversely, when the tip of the frame 1 descends, the rear end rises in proportion to the amount of descent. Therefore, the angle of the frame 1 can be adjusted without substantially moving the hip point of the seat cushion 2.

Next, Figure 5 explains the sitting height adjustment mechanism.
In the middle of the connecting rod 15, there is a seat height adjustment mechanism 2, such as a turnbuckle, for adjusting the length of the connecting rod 15.
1, and in this embodiment, male screw portions 22a, 22b with different screwing directions are formed at the ends of the connecting rods 15a, 15b extending from the lever portion 6b and the support arm 12, respectively, and both male screw portions 22a , 22b are screwed onto both ends of the shaft portion of the seat height adjustment knob 23.
3b, respectively.

Therefore, when the seat height adjustment knob 23 is rotated, the two connecting rods 15a and 15b extend or contract, allowing the arm member 6 and the supporting arm 12 to swing in the same direction, thereby maintaining the seat angle. The frame body 1 moves up and down in parallel, and the sitting height changes.

As explained above, the seat adjustment device of the present invention can adjust the sitting angle of the seat frame without moving the hip point by using the swinging arm and the action of the link mechanism. The seat height can be adjusted while holding the seat.
The seat height or seat angle does not change due to the adjustment of the seat angle, and the seat angle does not change due to the seat height adjustment, and the seat height or seat angle can be easily adjusted by operating the turnbuckle or seat angle adjustment screw. . The seat adjustment device of the present invention has a very simple structure, so it can be provided at low cost, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

The drawings show one embodiment of the seat adjustment device of the present invention, and FIG. 1 is a perspective view of the seat frame, FIG. 2 is a front view of the same, FIG. 3 is a side view of the same, and FIG. FIG. 5 is a side view showing the sitting height adjustment mechanism. 1...Seat frame, 3...Rotation axis, 4, 17
... Bracket, 5, 10 ... Mounting bracket, 6, 7
... Arm member, 9 ... Guide groove, 12, 13 ... Support arm, 14 ... Sliding pin, 15, 15a, 15b ...
...Continuous rod, 16...Horizontal rod, 19...Bearing member, 20
... Seat angle adjustment screw, 21 ... Seat height adjustment mechanism, 23
...Seating height adjustment knob.

Claims (1)

[Scope of utility model registration request] Guide grooves are provided facing each other in the front and back direction on the lower surface of both sides of the front end of the seat frame consisting of a frame body, and both ends of the horizontal rod are slidably fitted into both guide grooves, and the Support arms are connected between both ends and the floor-side mounting bracket, and arm members are connected between both sides of the rear end of the seat frame and the floor-side mounting bracket so as to be swingable in the front-rear direction. In the seat, the at least one arm member is provided with a lever portion extending downward from the pivot point with the floor-side mounting bracket, and the lever portion of the arm member and a substantially central portion of the one support arm are provided. are connected by a connecting rod consisting of two members connected by a turnbuckle, and a female screw member is attached orthogonally to the horizontal rod, and a female screw member is attached to the seat frame in the front and back direction thereof. A seat adjustment device made by screwing together seat angle adjustment screws arranged in the same direction.