CN101042167A

CN101042167A - Dust cap components

Info

Publication number: CN101042167A
Application number: CN 200710068256
Authority: CN
Inventors: 杨梅; 郑晓敏; 冯兵团
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2007-09-26

Abstract

It relates to a dust cap component that mainly comprises the dust cap plate and the dust cap body with holes on the plate, the said dust cap body being a cylinder with an opening at one end, the other end having dust cap body hole corresponding to that on the dust cap hole, with the side wall of the dust cap made of equal radius section and progressive shrinking section and spacing point at their connecting point, and buffer cavity inside the dust cap of the progressive shrink section. It can eliminate the risk of the direct press of the dust cap on the oil seal, preventing the drop of abnormal parts into the oil seal, greatly reducing the opportunity of scratching the oil seal by the abnormal part, extending the durability of the oil seal and the shocker, four to six heat radiating holes evenly on the oblique circumference to avoid the rate of deformation of the oil seal de to high temperature.

Description

A kind of dust-proof cover

Technical field

The present invention relates to the dust cover field, especially a kind of automobile dust-proof cover of independent suspension vibration damper.

Background technique

For the independent suspension vibration damper; dust cover generally is equipped with on top at the vibration damper fuel tank; the effect of dust cover is the main Sealing oil sealing of protection vibration damper; stop outside foreign matter, silt to immerse and the scuffing oil sealing; prevent that simultaneously the suspension part from directly striking on the oil sealing, if the oil seal lip damage then causes the vibration damper leakage of oil to be lost efficacy.Fig. 1 is a kind of combination dustproof cover structure of existing structure, and advantage is that manufacturing process is ripe, two part spot welding of reason are formed, and intensity can guarantee when being subjected to external impacts; Fig. 2 is a kind of monomer-type dustproof cover structure of existing structure, and advantage is that manufacturing process is simple, because of be directly be stamped to form, cost is lower, and is but because single-piece intensity is lower, yielding when being subjected to external impacts.

But the shortcoming that above-mentioned two kinds of structures exist, identical really, specific as follows: 1, the gap H on plane is less as shown in

erection drawing

3,4 on dust cover internal surface and the oil sealing, and dust cover easily compressing has worsened the operate outside condition of oil sealing in the upper-end surface of inner oil sealing; The H value of A, existing structure 1 is generally 0.5-1.0mm; Though B, existing structure 2 improve to some extent, the H value is generally 0.9-1.5mm, and is excessive because of pressure when press-fiting aborning because of it is three points location, the easy indent distortion of locating face, and gap H value can corresponding reducing.2, lack sink in the dust cover, the heat that causes the mutual fricting movement of connecting rod and oil sealing to produce can not in time distribute, and makes oil sealing easily cause high temperature deformation.3, (original structure h can not be little greatly as shown in

erection drawing

2,4 for the radial clearance h of dust cover endoporus and connecting rod, because avoid oil sealing, generally be greater than the oil sealing diameter), be generally 1.5-2.0mm, can not prevent effectively that foreign matter from falling into oil sealing, oil sealing causes the vibration damper leakage of oil to be lost efficacy after being scratched by foreign matter.

Summary of the invention

The present invention will solve the shortcoming of above-mentioned prior art, and a kind of dust-proof cover is provided.

The present invention solves the technological scheme that its technical problem adopts: this dust-proof cover, mainly comprise dust cover and dustproof lid, have the dust cover plate hole on the dust cover, described dustproof lid is the cylindrical shell of an end opening, have on the other end and the corresponding dust cover body opening of dust cover plate hole, the sidewall of dustproof lid is made of isometrical section and converging transition, and isometrical section and converging transition joint form spacing point, form buffer cavity in the dustproof lid at converging transition place.

Described dust cover and dustproof lid are fixed together by spot welding, also can be used as integrative-structure.

On the sidewall of the dustproof lid at converging transition place, have one group of radiation hole.

The gap h of described dust cover plate hole and connecting rod is 0.5-1.0mm.

The effect that the present invention is useful is: 1, the gap H on plane is bigger on dust cover internal surface and the oil sealing, can reach 5.5-6.5mm, has thoroughly eliminated dust cover and directly has been pressed in potential risk above the oil sealing; 2, the gap h of dust cover endoporus and connecting rod is less, and general 0.5-1.0mm can prevent better that foreign matter from falling into oil sealing, has reduced the chance that oil sealing is scratched by foreign matter greatly, the therefore relative prolongation of the life-span of oil sealing and vibration damper; 3, inclined-plane circumference 4-6 the radiation hole that evenly distribute, the heat that the mutual fricting movement of connecting rod and oil sealing is produced in time distributes, and has avoided oil sealing Yin Gaowen and the probability of being out of shape; 4, enough big because of the space, outside impact force can not act on the oil sealing, has eliminated oil sealing because of directly being subjected to the risk that outside impact is out of shape; 5, two part spot welding of this structure reason are formed, and enough impact strengths are arranged, and when being subjected to the external impacts of normal suspension part, dust cover, oil sealing all can not be out of shape.6, technology is ripe.

Description of drawings

Fig. 1 is the main TV structure schematic representation of prior art 1;

Fig. 2 is the main TV structure schematic representation of prior art 2;

Fig. 3 is the structural representation after prior art 1 assembling;

Fig. 4 is the structural representation after prior art 2 assemblings;

Fig. 5 is master's TV structure schematic representation of the present invention;

Fig. 6 is a plan structure schematic representation of the present invention;

Fig. 7 is the structural representation after the present invention assembles;

Description of reference numerals: dust cover 1, dust cover 1-1, dustproof lid 1-2, dust cover plate hole 1-3, dust cover body opening 1-4, connecting rod 2, oil sealing 3, fuel tank 4, radiation hole 5, spot welding 6, buffer cavity 7.

Embodiment

The invention will be further described below in conjunction with accompanying drawing:

As Fig. 5, Fig. 6 and shown in Figure 7, this dust-proof cover mainly comprises dust cover 1-1 and dustproof lid 1-2, and dust cover 1-1 and dustproof lid 1-2 are fixed together by spot welding 6.Have dust cover plate hole 1-3 on the dust cover 1-1, dustproof lid 1-2 is the cylindrical shell of an end opening, have on the other end and the corresponding dust cover body opening of dust cover plate hole 1-3 1-4, the sidewall of dustproof lid 1-2 constitutes with converging transition by isometrical section, isometrical section and converging transition joint form the spacing point of fuel tank 4, in the dustproof lid 1-2 at converging transition place, form buffer cavity 7, the gap H that is plane on dust cover internal surface and the oil sealing is bigger, can reach 5.5-6.5mm, thoroughly eliminate dust cover and directly be pressed in potential risk above the oil sealing.

The circumference heat that 4-6 radiation hole 5 can make the mutual fricting movement of connecting rod and oil sealing produce that evenly distributes in time distributes on the sidewall of the dustproof lid 1-2 at converging transition place, has avoided oil sealing Yin Gaowen and the probability of being out of shape.

The gap h of described dust cover plate hole 1-3 and connecting rod 2 is 0.5-1.0mm, can prevent better that foreign matter from falling into oil sealing, has reduced the chance that oil sealing is scratched by foreign matter greatly, the therefore relative prolongation of the life-span of oil sealing and vibration damper.

This practical modified model dust-proof cover promptly designs at above-mentioned defective, this structure not only makes the gap H on plane on dust cover internal surface and the oil sealing 3 increase greatly as shown in erection drawing 7, also consider intensity and thermal diffusivity, overcome the shortcoming of above-mentioned two kinds of structures.

Structure of the present invention it should be noted that: foozle can cause dust cover to cooperate tension with the fuel tank circumference, and then press-fits difficulty.

In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.

Claims

1, a kind of dust-proof cover, mainly comprise dust cover (1-1) and dustproof lid (1-2), have dust cover plate hole (1-3) on the dust cover (1-1), it is characterized in that: described dustproof lid (1-2) is the cylindrical shell of an end opening, have on the other end and the corresponding dust cover body opening of dust cover plate hole (1-3) (1-4), the sidewall of dustproof lid (1-2) constitutes with converging transition by isometrical section, isometrical section and converging transition joint form spacing point, formation buffer cavity (7) the dustproof lid (1-2) at converging transition place in.

2, dust-proof cover according to claim 1 is characterized in that: described dust cover (1-1) and dustproof lid (1-2) are fixed together by spot welding (6).

3, dust-proof cover according to claim 1 and 2 is characterized in that: have one group of radiation hole (5) on the sidewall of the dustproof lid (1-2) at converging transition place.

4, dust-proof cover according to claim 1 and 2 is characterized in that: described dust cover plate hole (1-3) is 0.5-1.0mm with the gap h of connecting rod.