Bounce limiter for hanging apparatus

Abstract

The present invention provides a bounce limiter for a suspension device, the bounce limiter is made of foamed polyurethane, does not produce unpleasant noise caused by friction, and is used for the suspension of vehicles with shock absorbers and coil springs The cylindrical elastic body on the device allows the piston rod to pass through the central hole (47), and at the same time, the upper end (60) is fitted and retained in the concave fitting part of the spring seat in an embedded state, so that when the vehicle bounces and shock absorption The outer peripheral surface (70) of the axial lower end surface (65) and the lower end portion (52) of the bounce limiter (46) made of foamed polyurethane that is elastically abutted against the cylinder of the device is made Formed into a wrinkle-forming surface (68) composed of fine concavo-convex groups.

Description

technical field [0001] The present invention relates to a bounce limiter for a suspension device. The bounce limiter is a cylindrical foamed polyurethane bounce limiter used for a vehicle suspension device having a shock absorber and a coil spring as constituent elements. It relates to a bouncing limiter characterized in the technical means of preventing noise. Background technique [0002] Conventionally, in a suspension device of a vehicle including a shock absorber and a coil spring as constituent elements, a bounce limiter that abuts against a cylinder of the shock absorber during a bounce to limit excessive contraction displacement of the shock absorber is used. [0003] The bounce limiter has a cylindrical shape as a whole, and is mounted such that the piston rod of the shock absorber is inserted into the center hole. [0004] The bounce limiter, when the vehicle is bouncing, its lower end abuts against the cylinder of the shock absorber and undergoes compression and ...

AI Technical Summary

Problems solved by technology

[0014] However, when this is done, the lower end of the bounce limiter becomes thinner (radial wall thickness) and easily deformed, and friction is more likely to occur with its large deformation, and therefore, there is a problem that noise is more likely to be generated here. question

[0015] This problem occurs very easily on suspensions in which the piston rod rotates relative to the mounting fitting, i.e. in relation to the bounce limiter, but sometimes also occurs in other suspensions

[0016] In addition, regardless of whether the bounce limiter and the piston rod rotate integrally or independently of each other, when the conventional bounce limiter is compressed and deformed in the axial direction during the braking action of the bounce, it is fitted in the piston rod. The upper end in the concave fitting part of the mounting fitting, specifically, the outer peripheral surface and the upper end surface of the upper end rub against the inner peripheral surface and the upper bottom surface of the concave fitting part of the mounting fitting, and noise may also occur here. The problem

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