CN201507655U - Dust shield of piston support - Google Patents
Dust shield of piston support Download PDFInfo
- Publication number
- CN201507655U CN201507655U CN2009203082328U CN200920308232U CN201507655U CN 201507655 U CN201507655 U CN 201507655U CN 2009203082328 U CN2009203082328 U CN 2009203082328U CN 200920308232 U CN200920308232 U CN 200920308232U CN 201507655 U CN201507655 U CN 201507655U
- Authority
- CN
- China
- Prior art keywords
- rubber body
- dust
- framework
- interference fit
- dust shield
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model belongs to a sealing device, in particular to a dustproof structure used for a piston support. The utility model provides a dust shield of a piston support, which comprises a framework and a rubber body, wherein the outer circumferential surface and the inner circumferential surface of the rubber body are respectively embedded with an outer framework and an inner framework; the outer framework and a seat bore are in interference fit; and the inner framework and a shaft are in interference fit, wherein the rubber body presents a radial ripple shape. When the mobility between the dust shield and a cooperating shaft is good, external dust can be effectively prevented from entering the piston cavity.
Description
Technical field
The utility model belongs to a kind of seal arrangement, relates in particular to a kind of piston holder dustproof construction.
Background technique
Existing piston support dust-proof cover generally is made up of rubber body and skeleton, wherein studs with inner frame and outer skeleton on the inside and outside circumferential surface of rubber body respectively, closely cooperates between inner frame and the running shaft, closely cooperates between outer skeleton and the seat hole wall.The shortcoming that this dust-proof cover exists is: when running shaft rotates or during beat, dust-proof cover can not cooperate preferably with running shaft, external dust is easy to enter in the piston cavity, and the effect of preventing dust is relatively poor.
Summary of the invention
The purpose of this utility model is to propose a kind of piston holder dust-proof cover with better dustproof effect, and the servo-actuated of itself and fitted shaft is good, prevents that effectively external dust etc. from entering piston cavity.
The utility model is to adopt following technological scheme to realize: a kind of piston holder dust-proof cover, comprise skeleton and rubber body, wherein stud with outer skeleton and inner frame respectively on the outer peripheral surface of rubber body and the inner peripheral surface, be interference fit between outer skeleton and the seat hole, be interference fit between inner frame and the axle, wherein, described rubber body is the radial corrugation shape.When the amplitude of fluctuation of fitted shaft was excessive, corrugated rubber body can well be swung with axle, prevented that external dust from entering in the piston cavity, guaranteed the sealing effect of dust-proof cover.
The beneficial effects of the utility model are: by the rubber body of dust-proof cover is made the radial corrugation shape, improved the servo-actuated between dust-proof cover and the fitted shaft greatly, even when the fitted shaft amplitude of fluctuation is big, also can effectively stop external dust, have better seal.
Description of drawings
Fig. 1 is a sectional drawing of the present utility model.
Embodiment
As shown in Figure 1, this dust-proof cover comprises rubber body 2, studs with outer skeleton 1 on the outer peripheral surface of rubber body 2, is interference fit between outer skeleton 1 and the seat hole inwall; Studding with inner frame 3 on the inner peripheral surface of rubber body 2, also is interference fit between inner frame 3 and the fitted shaft.The close-fitting effect of having played is installed in the use of outer skeleton 1 and 3 pairs of dust-proof cover of inner frame.Rubber body 2 is the radial corrugation shape, and the pliability of rubber body 2 increases, and when the amplitude of fluctuation of fitted shaft was big, rubber body 2 still can be followed the fitted shaft swing, prevents that at any time external dust from entering in the piston cavity, improved the sealing effect of dust-proof cover greatly.
Claims (1)
1. piston holder dust-proof cover, comprise skeleton and rubber body, wherein stud with outer skeleton and inner frame respectively on the outer peripheral surface of rubber body and the inner peripheral surface, be interference fit between outer skeleton and the seat hole, be interference fit between inner frame and the axle, it is characterized in that: described rubber body is the radial corrugation shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203082328U CN201507655U (en) | 2009-08-18 | 2009-08-18 | Dust shield of piston support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203082328U CN201507655U (en) | 2009-08-18 | 2009-08-18 | Dust shield of piston support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507655U true CN201507655U (en) | 2010-06-16 |
Family
ID=42468782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203082328U Expired - Fee Related CN201507655U (en) | 2009-08-18 | 2009-08-18 | Dust shield of piston support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016298A (en) * | 2012-12-14 | 2013-04-03 | 浙江鸿友压缩机制造有限公司 | Swash-plate oscillating reciprocating-piston oilless air compressor |
-
2009
- 2009-08-18 CN CN2009203082328U patent/CN201507655U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016298A (en) * | 2012-12-14 | 2013-04-03 | 浙江鸿友压缩机制造有限公司 | Swash-plate oscillating reciprocating-piston oilless air compressor |
| CN103016298B (en) * | 2012-12-14 | 2016-05-18 | 浙江鸿友压缩机制造有限公司 | The inclined disc type reciprocating-piston oil-free air compressor that waves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20120818 |