CN2360674Y

CN2360674Y - Spring with protective sleeve

Info

Publication number: CN2360674Y
Application number: CN 98223900
Authority: CN
Inventors: 张俊
Original assignee: Shanghai Automotive Co ltd Chi
Current assignee: Shanghai Automotive Co ltd Chi
Priority date: 1998-04-30
Filing date: 1998-04-30
Publication date: 2000-01-26
Anticipated expiration: 2008-04-30

Abstract

The utility model discloses a spring with a protective sleeve, which is composed of the protective sleeve which is arranged on a spiral spring and the spiral spring. The spring has the advantage of good shock absorbing performance. The spring can reduce impact noise in a use process and enhance ride comfortability when the spring is particularly used on vehicle suspension.

Description

The spring of band sheath

The utility model relates to a kind of helical spring, relates in particular to a kind of helical spring that is suitable for the band sheath that automotive suspension uses.

Existing automotive suspension helical spring, generally be directly the elastic material wire-wound to be formed, though have damping effect, because it is a metallic material, bumping between spring coil when being subjected to external force deformation easily produces noise or assemblage gap frictional noise, and shock-absorbing is also undesirable.

The purpose of this utility model is exactly in order to overcome above helical spring shortcoming in use, and a kind of spring with sheath that provides.

The purpose of this utility model is achieved in that a kind of spring with sheath, it is characterized in that: be made of the helical spring of elastic material coiling and the sheath that is provided with on its spring section; Described sheath is one section pipe box, provides a breach on its tube wall.

Of the present utility modelly advance a feature and be: described helical spring can be continuous variation from the diameter of certain section its spring material of spring, and described sheath is located at the position of described helical spring variable cross section material.

Described sheath also can be located on the bearing ring at helical spring two ends.

Because the utility model has adopted above structure, make the helical spring of making produce shock-absorbing and to become rigidity effective, under big load, have high shock-absorbing damping performance, and can reduce the impact noise in the using process greatly and the gap frictional noise when using.

Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.

Accompanying drawing 1 is the utility model one embodiment's a structural representation;

Accompanying drawing 2 is sectional views of the utility model the foregoing description band jacket portions.

See also accompanying drawing:

The utility model embodiment one is used for the helical spring of rear overhang rack, is made of the spring 1 of an elastic wire coiling and the sheath 2 that is provided with on the spring section.For improving shock-proof effect, the utility model adopts the variable cross section material structure, be continuous variation at described helical spring certain section diameter that plays its spring material, this spring material diameter variation can be the end variation to spring, also can be to change simultaneously to the two ends of spring, present embodiment be from the two ends of spring from the coarse to fine simultaneously.Pitch of the present utility model also can be as required be nonlinear change from certain section of spring, and the diameter of its spring coil also can successively decrease to two ends to an end or while from certain section.Present embodiment is that its pitch and spring coil are to the upper end from large to small from figure one performance, can improve the rigidity intensity of whole spring like this.

Be better absorbing vibration, improve the flexibility of whole system, and the intensity that improves spring, the utility model is provided with a sheath 2 at the reducing position of spring, described sheath is one section pipe box, provides a breach 21 (see figure 2)s on its tube wall, is convenient to be sleeved on the spring 1.Spring at first is that the contact between the sheath produces damping function when the effect distortion that is subjected to external force like this, to improve the flexibility of whole system, has avoided the collision noise in the spring using process simultaneously.

Sheath of the present utility model also can be arranged on the bearing ring of both ends of the spring (not shown) on request.

The spring of the utility model band sheath is applicable to any occasion that needs distortion and stored energy work, is particularly useful for the automotive suspension shock-absorbing.

Claims

1. the spring with sheath is characterized in that: be made of the helical spring of elastic material coiling and the sheath that is provided with on its spring section; Described sheath is one section pipe box, provides a breach on its tube wall.

2. a kind of spring with sheath according to claim 1 is characterized in that: described helical spring can be continuous variation from the diameter of certain section its spring material of spring, and described sheath is located at the position of described helical spring variable cross section material.

3. a kind of spring with sheath according to claim 1, it is characterized in that: described sheath can be located on the bearing ring at helical spring two ends.

4. a kind of spring with sheath according to claim 1 is characterized in that: the described spring of described spiral bullet can be nonlinear change to an end or while to two ends from its pitch of spring section.

5. a kind of spring with sheath according to claim 1 is characterized in that: but described spring is from the diameter Xiang Yiduan of spring section its spring coil or successively decrease to two ends simultaneously.