CN201925395U - Piston of shock absorber - Google Patents
Piston of shock absorber Download PDFInfo
- Publication number
- CN201925395U CN201925395U CN2011200189566U CN201120018956U CN201925395U CN 201925395 U CN201925395 U CN 201925395U CN 2011200189566 U CN2011200189566 U CN 2011200189566U CN 201120018956 U CN201120018956 U CN 201120018956U CN 201925395 U CN201925395 U CN 201925395U
- Authority
- CN
- China
- Prior art keywords
- piston
- oil seal
- oil
- shock absorber
- piston body
- 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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Abstract
The utility model discloses a piston of a shock absorber, which comprises a piston body (1). An annular oil seal groove (2) is arranged on the circumferential wall of the piston body (1), the piston body (1) is further provided with at least two small holes uniformly distributed circumferentially, one end of each small hole (3) is communicated with the annular oil seal groove (2), and the other end of each small hole (3) penetrates though the upper end surface of the piston body (1). After the structure is adopted, oil pressure of the end surface of the piston acts on an inner ring of an oil seal via the small holes under the condition of abrasion of the oil seal, accordingly the oil seal can expand outwards until the outer surface of the oil seal hermetically contacts with the inner wall of a cylinder barrel, and oil leakage of the oil seal is avoided.
Description
Technical field
The utility model relates to the auto parts and components field, specifically is a kind of shock absorber piston that is used for the automobile shockproof system.
Background technique
Automobile is through uneven road surface the time, though the shock-absorbing spring in the shockproof system can filter the vibrations on road surface, spring self also has to-and-fro motion, and vibration damper is used for suppressing this spring jump.The structure and the oil cylinder of vibration damper are similar, are that the piston rod that has piston inserts in the cylinder barrel, under the effect of power piston are moved back and forth in cylinder barrel.At present, be embedded with oil sealing on the circumferential surface of the piston of prior art, make piston circumferential surface and inner wall of cylinder reach the effect of sealing by oil sealing, piston can not produce oil leakage phenomenon during to-and-fro motion in cylinder barrel like this.But there is following shortcoming in the piston of this structure: because oil sealing and inner wall of cylinder are a kind of contact relation of friction all the time, piston is for a long time in cylinder barrel after the to-and-fro motion, can make the oil sealing outer surface on the piston produce wearing and tearing, like this, to cause the oil sealing oil leakage phenomenon, not reach the seal action of oil sealing.
The model utility content
Technical problem to be solved in the utility model is that a kind of shock absorber piston that can avoid oil sealing to produce oil leakage phenomenon owing to wearing and tearing is provided.
For solving the problems of the technologies described above, the shock absorber piston that the utility model provides, comprise piston only, has the annular oil seal groove on the outer circle wall of described piston only, described piston only also has at least two along the circumferential direction equally distributed apertures, one end of described aperture all communicates with the annular oil seal groove, and the other end all connects the upper-end surface to piston only.
After adopting above structure, the utility model compared with prior art, have the following advantages: owing on piston only, increased the aperture that communicates with the annular oil seal groove, make oil sealing under the situation of wearing and tearing, act on the inner ring of oil sealing by aperture by the oil pressure of piston end surface, thereby oil sealing is expanded outwardly, contact with the inner wall of cylinder sealing, avoid occurring the phenomenon of oil sealing leakage of oil then until the outer surface of oil sealing.
As improvement, the quantity of described aperture is four, along the circumferential direction evenly distributes.After adopting the aperture quantity of this best, make oil sealing under the oil pressure effect, expand more evenly, make better tightness.
Description of drawings
Fig. 1 is the main TV structure schematic representation of the utility model shock absorber piston;
Fig. 2 is the cross-sectional schematic of A-A direction among Fig. 1.
Wherein: 1, piston only; 2, annular oil seal groove; 3, aperture.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail, but and be confined to the embodiment of the following stated.
By the structural representation of the utility model shock absorber piston illustrated in figures 1 and 2 as can be known, it comprises piston only 1, has annular oil seal groove 2 on the outer circle wall of described piston only 1.Described piston only 1 also has at least two along the circumferential direction equally distributed apertures 3, and an end of described aperture 3 all communicates with annular oil seal groove 2, and the other end all connects to the upper-end surface of piston only 1.
The quantity of described aperture 3 is four, along the circumferential direction evenly distributes.
The utility model is not limited to above-described structure, and wherein the quantity of aperture also can be 3,5,6 or the like, and these apertures along the circumferential direction evenly distribute.
More than change and fall within the protection domain of the present utility model.
Claims (2)
1. shock absorber piston, comprise piston only (1), has annular oil seal groove (2) on the outer circle wall of described piston only (1), it is characterized in that: described piston only (1) also has at least two along the circumferential direction equally distributed apertures (3), one end of described aperture (3) all communicates with annular oil seal groove (2), and the other end all connects to the upper-end surface of piston only (1).
2. shock absorber piston according to claim 1 is characterized in that: the quantity of described aperture (3) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189566U CN201925395U (en) | 2011-01-18 | 2011-01-18 | Piston of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189566U CN201925395U (en) | 2011-01-18 | 2011-01-18 | Piston of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925395U true CN201925395U (en) | 2011-08-10 |
Family
ID=44429244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200189566U Expired - Fee Related CN201925395U (en) | 2011-01-18 | 2011-01-18 | Piston of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804970A (en) * | 2014-12-31 | 2016-07-27 | 华域三电汽车空调有限公司 | Compressor piston |
-
2011
- 2011-01-18 CN CN2011200189566U patent/CN201925395U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804970A (en) * | 2014-12-31 | 2016-07-27 | 华域三电汽车空调有限公司 | Compressor piston |
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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: 20110810 Termination date: 20140118 |