JPH0613937U - Suspension device for automobile seat - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the suspension function in a suspension device for a vehicle seat. [Structure] Upper frame (1) and lower frame (2)
X-shaped links (51) and (52) are interposed between the upper frame (1) and the lower frame (2), and a shock absorber (3) in a slanted shape and a vertical shape in the rear part. It is characterized in that an auxiliary spring (4) consisting of a compression coil spring is arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suspension device for a vehicle seat with adjustable weight, and more specifically, a pair of left and right X-shaped links are provided between an upper frame on which a seat cushion is placed and a lower frame fixed to a vehicle floor. The present invention relates to improvement of a suspension device that is interposed.

[0002]

[Prior art]

 In this type of conventional suspension device, a shock absorber wound with a compression support spring is placed between the upper frame and the lower frame to absorb the vibration transmitted from the vehicle floor to the seat cushion and By adjusting the elasticity of the coil springs, cushioning properties can be obtained according to the weight of the seated person. By the way, there are two types of shock absorbers, which are arranged vertically between the upper frame and the lower frame and those arranged in an inclined manner.

[0003]

[Problems to be solved by the device]

 The vertical shock absorber has the advantage that the damping force, the spring reaction force of the compression coil spring, and the piston speed increase as the upper frame descends, but there is a problem that the vertical stroke cannot be made large. . On the other hand, in the case where the shock absorber is installed in an inclined shape, the inclination of the shock absorber becomes further lower as the upper frame descends, so there is a problem that the damping force, spring reaction force, and piston speed gradually decrease. The advantage is that the vertical stroke can be increased. Then, this invention aims at eliminating such a malfunction of the said conventional product.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a shock absorber having a compression support spring for weight adjustment wound in a front portion between the upper frame and the lower frame in a tilted manner and in a rear portion. It is characterized in that auxiliary springs composed of coil springs are vertically arranged. It is desirable that the above-mentioned auxiliary springs be disposed so as to be located below the hip points in the upper frame.

[0005]

[Action]

 Since the shock absorber is installed in an inclined shape, the stroke between the upper frame and the lower frame is large, and there is no feeling of bottoming. Will be resolved.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a frame-shaped upper frame on which a seat cushion (not shown) is placed, (2) is a lower frame fixed to a vehicle rail or a slide rail for adjusting the longitudinal position of a seat fixed to the vehicle floor, (3) Is a shock absorber that is attached to the front side of the upper frame (1) and the lower frame (2) in a laterally inclined manner, and (4) is the lateral center of the rear part of the upper frame (1) and the lower frame (2). Auxiliary springs consisting of compression coil springs arranged vertically are shown in each.

A pair of left and right X-shaped links (51), (52) and (53) are interposed between the upper frame (1) and the lower frame (2), and the links (51) ... Therefore, the upper frame (1) can be moved in the vertical direction. In the figure, (11) and (21) are rails, and rollers (51a) and (52a) provided on the movable sides of the links (51) and (52) are slidably fitted in the rails (11) and (21). ing. The upper frame (1) is always urged upward by a torsion bar (not shown).

The shock absorber (3) is arranged in front of the upper frame (1) and the lower frame (2), and is provided with a hydraulic damper (31) and a compression support wound around the damper (31) for body weight adjustment. The compression support spring (32) is configured with a spring (32). That is, the repulsive resilience of the compression support spring (32) can be adjusted according to the weight of the seated person, and the cushioning property desired by the seated person can be obtained.

The auxiliary spring (4) is arranged so as to be located in the rear center of the upper frame (1) and the lower frame (2), that is, below the hip point of the seated person. Reference numerals (41) and (42) in the figure denote support plates for supporting the auxiliary spring (4). A rubber damper (6) is installed upward at a position rearward and close to the auxiliary spring (4) to prevent bottoming of the upper frame (1).

Thus, since the shock absorber (3) is attached in an inclined shape, a large stroke can be obtained, but the inclination becomes lower as the stroke (the upper frame (1) lowers), and therefore the hydraulic damper. The piston speed of (31) is slow, and the damping force and the reaction force of the compression support spring (32) are reduced. On the other hand, since the auxiliary spring (4) is arranged vertically, the damping force and the spring reaction force increase as the upper frame (1) descends, and the defect of the shock absorber (3) can be replenished. Then, when the upper frame (1) descends to the lowest position, the support plate (41) of the upper frame (1) is joined to the rubber damper (6).

[0011]

[Effect of device]

 According to the present invention, since the shock absorber is mounted in an inclined shape and the auxiliary spring is mounted in a vertical shape, the stroke is large, and a wide range of weight adjustment by a compression support spring wound around the shock absorber can be set. Moreover, since the auxiliary spring is arranged at the rear portion, it is located below the hip point of the seated person, and the sitting comfort is improved. Further, the elastic force of the auxiliary spring reduces the load of the reaction force of the compression support spring of the shock absorber, and the operation force when adjusting the weight by adjusting the elastic force of the compression support spring can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an apparatus according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

[Explanation of symbols]

 1 Upper frame 2 Lower frame 3 Shock absorber 4 Auxiliary spring

Claims (1)

[Scope of utility model registration request] 1. A suspension device for a vehicle seat, wherein an X-shaped link is interposed between a frame-shaped upper frame on which a seat cushion is placed and a lower frame fixed to a vehicle floor side, A shock absorber wound with a compression support spring for weight adjustment is arranged in an inclined shape in the front part between the upper frame and the lower frame, and an auxiliary spring consisting of a compression coil spring is arranged in a vertical form in the rear part. An automotive seat suspension device characterized by being installed.