SU937245A1 - Seat suspension - Google Patents

Description

(54) SUSPENSION SEAT

one

This invention relates to mechanical engineering and concerns the construction of seats, in particular their suspensions.

 A known seat suspension comprising an elastic member mounted between the base and the seat cushion, and a correction device. stiffness of the elastic element 1.

The disadvantage of this suspension is the need to manually adjust the stiffness of its elastic element.

Closest to the proposed, technical essence and the achieved result is a seat suspension containing a base, an elastic element of constant stiffness, installed between the base and the seat booster, and the following load-bearing capacity adjustment system having a stiffness corrector 2.

A disadvantage of the known suspension is with the complexity of its design and low speed.

The purpose of the invention is to simplify the design and increase the speed of the suspension.

The goal is achieved by the fact that the suspension is equipped with a mechanism for continuous adjustment of the stiffness corrector, made in the form of a fluid-filled cup, in which the sleeve, which surrounds the stem fixed on the support, and the tracking spring located between the stem and the cup, are telescopically mounted, and the stiffness corrector is made in the form cantilever-mounted on the base of vertical leaf springs supported by free ends through self-supporting supports on said sleeve.

In this case, the pillow is mounted on the base by means of a stand having a flange connected to the base through an elastic support.

The drawing shows the suspension seat.

Claims (2)

The suspension of the seat containing the cushion 1 has a brush 2 mounted in the intermediate sleeve 3. The following system 20 of adjusting the carrying capacity of the suspension having a stiffness corrector is equipped with a continuous adjustment mechanism of this corrector. The mechanism is made in the form of a glass filled with liquid 4, in which a telescopically rod 2 is installed. Between the inner surface of the bottom of the glass and the rod 2 a tracking spring 5 is installed. The glass is movably mounted in the rack 6. Between the outer surface of the bottom of the glass and the lower part of the rack there is an elastic element of constant stiffness, made in the form of a spiral spring 7. The stiffness corrector is made in the form of vertical cantilever plate springs 8, the lower ends of which are fixed on the rack 6. Free The ends of the springs are supported by self-aligning supports 9 on the prisms 10 fixed on the sleeve 3. The rod 2 has a head 11 which is mounted relative to the walls of the glass with a small gap. As a result, the head 11 divides the cup into two cavities A and B, which are interconnected by the specified gap. The lower part of the pillar has a flange 12, mounted inside the base 13 by means of an elastic support 14, made of rubber and pressed against the bottom of the cover 15. The suspension of the seat works as follows. When a load is applied to the pillow 1 and in the absence of oscillations of the base 13, the springs 5 and 7 are compressed and the rod 2 and the cup 4 are lowered down. The sleeve 3 remains at a constant height in the middle of the stroke of the prism 10 in the pillars of the stand 6, since during the compression of the spring 5, part of the liquid from cavity A is distilled into the cavity B. When the load on the cushion 1 decreases, the springs 5 and 7 expand, the brushes 2 and the cup 4 rise up but. sleeve 3 remains at a constant height, as the spring 5, uncoupling, distills the liquid from cavity B to cavity A. With constant load on the pillow 1 and with vertical oscillations of the base 13 with the stand 6 support 1 with the rod 2 and links 3, 4, 5 and 10 remain fixed, since the total vertical force transmitted from the stand 6 by the spring 7, the springs 8 and the supports 9 remains almost constant in the oscillation cycle time and therefore cannot cause vibrations. The vertical movement of the sleeve 3 relative to the stem 2 and the glass 4 under the action of the forces of the springs 8 transmitted through the supports 9 is excluded by the introduction of an appropriate temperature using the head 11. The elastic support 14 reduces the effect of longitudinal and transverse vibrations of the vehicle and isolates the stand 6 and the pillow 1 from high frequency oscillations of the latter. With a continuously varying load on the cushion 1 and oscillations of the base 13 with the resistant b, both processes proceed simultaneously. Since the prism 10 stroke in the windows of the rack 6 exceeds the oscillation range of the vibrating object, the correction effect of the springs 8 is carried out continuously and the overall rigidity of the suspension remains close to zero, although the carrying capacity of the suspension increases or decreases. The proposed seat suspension design provides a significant simplification of its design and improved speed. Claims I. A seat suspension comprising a base, an elastic element of constant stiffness, installed between the base and the seat cushion, and the following load capacity adjustment system, having a stiffness corrector, characterized in that, in order to simplify the design of the follower system and increase its speed, it is equipped with a mechanism for continuous adjustment of the stiffness corrector, made in the form of a glass filled with liquid, in which the sleeve, which covers the jaws, is telescopically mounted, The carrier and the tracking spring are located between the rod and the cup, and the stiffness corrector is made in the form of plate springs fixed on the base, supported by free ends through a self-aligning support on the said sleeve. 2. Suspension according to claim 1, characterized in that the sheet is mounted on the base by means of a stand having a flange connected to the base through. elastic support. Sources of information taken into account in the examination 1. USSR author's certificate number 420490, cl. In 61 33/00, 1971. 2.Galynina N. А. Development and research of vibroprotective chairs for machinists locomotives. Author. dis. MHSSO NETI, 1974, p. 22 (prototype).