CN201382111Y

CN201382111Y - Novel spring with rubber jacket

Info

Publication number: CN201382111Y
Application number: CN200920070004U
Authority: CN
Inventors: 张俊; 徐筱叶
Original assignee: SHANGHAI CHINA SPRING Corp Ltd
Current assignee: SHANGHAI CHINA SPRING Corp Ltd; China Spring Corp Ltd
Priority date: 2009-04-07
Filing date: 2009-04-07
Publication date: 2010-01-13
Anticipated expiration: 2019-04-07

Abstract

The utility model discloses a novel spring with a rubber jacket, which comprises a spring main body and the rubber jacket. An elastic material is wound into a spiral structure to form the spring main body; each coil in the spiral structure is called a spring coil, so that the diameter of the spring coil of the spring main body is gradually reduced from center to the two ends, and the spacing of adjacent spring coils is also gradually reduced; the rubber jacket is sheathed outside the spring main body, and at least covers parts at the two ends of the spring main body respectively accounting for 1/4 of the total length. The novel spring with the rubber jacket can effectively improve the shock avoiding and rigidity changing effects of the spiral spring, and also has strong shock-absorbing/reducing performance under heavy load. Meanwhile, the novel spring can also greatly lower colliding noise and clearance friction noise in the using process.

Description

A kind of novel band protects the spring of gum cover

Technical field

The utility model relates to a kind of spring, relates in particular to a kind of helical spring that is applicable to automotive suspension.

Background technique

Existing automotive suspension helical spring generally is directly the elastic material wire-wound to be formed, though have damping effect, but because it is a metallic material, when being subjected to external force deformation, bumping between spring coil is easy to generate noise or the gap frictional noise occurs, and its shock-proof effect is also not ideal.

The model utility content

In view of this, the utility model provides a kind of novel band to protect the spring of gum cover, to overcome the shortcoming that helical spring in the prior art is easy to generate noise.

For solving the problems of the technologies described above, the utility model has adopted following technological means:

A kind of novel band protects the spring of gum cover, comprise the spring body and protect gum cover, described spring body turns to spiral-shaped structure by an elastic material, each circle in the described spiral-shaped structure is called spring coil, and to two ends, the diameter of its spring coil reduces then described spring body gradually from central authorities, and the spacing of adjacent coils thereof also reduces gradually, wherein, the described gum cover that protects is sheathed on outside the spring body, and covers the part that described spring body two ends respectively account for 1/4th length overalls at least.

Further, the described gum cover that protects can be made up of two-part, is set in the two ends of described spring body respectively, and the length that each part is protected gum cover all is not less than 1/4th of spring body length overall.The described gum cover that protects also can be sheathed on outside the whole spring body.

Further, a described side of protecting gum cover is provided with an opening.

Band of the present utility model protects the spring of gum cover, by narrower local of spring body two ends coil space or outside whole spring body, coat one deck and protect gum cover, can effectively improve helical spring shock-absorbing and become the rigidity effect, under big load, also can have high shock-absorbing damping performance, simultaneously, can also reduce impact noise and the gap frictional noise that produces in the using process greatly.

Description of drawings

Fig. 1 is the structural representation that the band of the utility model one preferred embodiment protects the spring of gum cover;

Fig. 2 is the schematic cross-section that band protects the spring of gum cover.

Embodiment

Below in conjunction with accompanying drawing the spring that band of the present utility model protects gum cover is described in further detail.

See also Fig. 1 and Fig. 2, the spring that the band of the utility model one preferred embodiment protects gum cover is the helical spring that is used for rear overhang rack, it is formed by an elastic material (for example steel wire) coiling, type structure in the shape of a spiral, if each circle in the described spiral-shaped structure is called spring coil, then as shown in Figure 1, spring body 1 in the present embodiment from central authorities to two ends, the diameter of its spring coil reduces gradually, and the spacing of adjacent coils thereof also reduces gradually, be the structure that dredge closeer centre, two ends, adopt this structure can improve the rigidity intensity of whole spring 1.

For absorbing vibration better, improve the flexibility of whole spring damper system, can be on spring body 1 the sheathed gum cover 2 that protects, this protects gum cover 2 should cover the narrower part of spring body 1 two ends coil space at least, for example spring body 1 two ends respectively account for the part of 1/4th length overalls.A kind of mode of execution is to protect gum cover 2 to adopt two-part to form, and is set in the two ends of spring body 1 respectively, and the length that each part is protected gum cover all is not less than 1/4th of spring body 1 length overall.Another kind of mode of execution be adopt the same with spring body 1 grow protect gum cover 2, be set in outside the whole spring body 1.Protect gum cover 2 by coating one deck, except can absorbing vibration, increase the flexibility, can also effectively suppress the noise that spring body 1 produces because of friction in compression and drawing process.

Protect the sheathed of gum cover 2 for convenience, also can offer opening 21 (see figure 2)s in a side of protecting gum cover 2.When spring body 1 produces deformation in the effect that is subjected to external force like this, mainly be to protect the contact between the gum cover 2 and the damping function that produces, can improve the flexibility of whole system, in addition, also avoided the collision noise in the spring using process.

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

Though the utility model discloses as above with preferred embodiment, so it is not in order to limit the utility model.Have in the technical field under the utility model and know the knowledgeable usually, in not breaking away from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is as the criterion when looking claims person of defining.

Claims

1, a kind of novel band protects the spring of gum cover, comprise the spring body and protect gum cover, described spring body turns to spiral-shaped structure by an elastic material, each circle in the described spiral-shaped structure is called spring coil, and to two ends, the diameter of its spring coil reduces then described spring body gradually from central authorities, and the spacing of adjacent coils thereof also reduces gradually, it is characterized in that the described gum cover that protects is sheathed on outside the spring body, and cover the part that described spring body two ends respectively account for 1/4th length overalls at least.

2, band as claimed in claim 1 protects the spring of gum cover, it is characterized in that, the described gum cover that protects is made up of two-part, is set in the two ends of described spring body respectively, and the length that each part is protected gum cover all is not less than 1/4th of spring body length overall.

3, band as claimed in claim 1 protects the spring of gum cover, it is characterized in that, the described gum cover that protects is sheathed on outside the whole spring body.

4, protect the spring of gum cover as claim 2 or 3 described bands, it is characterized in that a described side of protecting gum cover is provided with an opening.