CN201851645U - Piston assembly - Google Patents
Piston assembly Download PDFInfo
- Publication number
- CN201851645U CN201851645U CN2010206189616U CN201020618961U CN201851645U CN 201851645 U CN201851645 U CN 201851645U CN 2010206189616 U CN2010206189616 U CN 2010206189616U CN 201020618961 U CN201020618961 U CN 201020618961U CN 201851645 U CN201851645 U CN 201851645U
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- CN
- China
- Prior art keywords
- piston
- piston assembly
- utility
- sealing
- model
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a piston assembly, which comprises a piston and a sealing element. The utility model has the main design scheme that a lug boss is arranged on a piston post body, the sealing element is an annular sleeve body capable of being matched with the piston post body, and a groove embedded with the lug boss is arranged on the inner wall of the sleeve body. Compared with the existing piston assembly, the piston assembly with the design has the advantages that the sealing effect can be improved by more than two times, and the service life can be prolonged by more than two times.
Description
Technical field
The utility model relates to piston assembly, the piston assembly that uses in the cylinder of specifically shifting gears.
Background technique
Piston assembly includes piston, Sealing.Piston in the existing gearshift cylinder is typically provided with compression on its cylinder, and seal ring is housed in compression.Piston under the effect of seal ring, can form obturator with cylinder when axial motion." O " type seal ring that existing seal ring is normally made by rubber material, it very easily weares and teares, is out of shape in high temperature, hyperbaric environment, therefore usually can cause the generation of phenomenons such as the inclined to one side cylinder of piston, cylinder draining.The decylization phenomenon also takes place in seal ring easily when reciprocating motion of the pistons in addition.In order to address these problems, people need running check, change piston packing ring, may cause serious negative consequence otherwise arrive.Yet the replacing piston packing ring need arrive specialized maintenance department and change, and has not only strengthened maintenance man's workload thus, has also increased consumer cost.
The model utility content
The purpose of this utility model is exactly the piston assembly that a kind of novel structure will be provided, with the sealability of further raising piston and the working life of piston seal.
The purpose of this utility model is achieved in that
The piston assembly that the utility model provides includes piston, Sealing, and its key points in design is to be provided with boss on the piston cylinder, and Sealing is the annular cover that can be complementary with the piston cylinder, the inwall of this body be provided with can with the groove of boss tabling.
She Ji piston assembly is compared with existing piston assembly thus, and its sealing effect and working life all can improve more than the twice.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model includes piston 1, Sealing, and piston 1 cylinder is provided with boss 5, and Sealing is the annular cover 2 that can be complementary with the piston cylinder, the inwall of this body be provided with can with the groove 3 of boss 5 tablings.During use groove 3 in the annular cover 2 and the boss 5 on piston 1 cylinder are entrenched togather.The sealing contact surface that the utility model has increased Sealing amasss, and has improved sealing effect thus, has also overcome the problem that existing seal ring has wearing and tearing promptly must change because of the part slightly.
The utility model can be provided with slope 4 on the upper and lower edge of the outer wall of annular cover 2, piston is when pushing away gas thus, under the rubbing action of Sealing outer wall and cylinder inner wall, groove 3 in annular cover 2 inwalls is spreading slightly outward, the radial depth of groove 3 thereby shoal, further improved the sealing effect of piston thus, the piston axial motion of also being more convenient for simultaneously.
Claims (2)
1. piston assembly, include piston (1), Sealing, it is characterized in that piston (1) cylinder is provided with boss (5), Sealing is the annular cover (2) that can be complementary with the piston cylinder, the inwall of this body be provided with can with the groove (3) of boss (5) tabling.
2. piston assembly according to claim 1 is characterized in that the upper and lower edge of the outer wall of described annular cover (2) is provided with slope (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206189616U CN201851645U (en) | 2010-11-23 | 2010-11-23 | Piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206189616U CN201851645U (en) | 2010-11-23 | 2010-11-23 | Piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851645U true CN201851645U (en) | 2011-06-01 |
Family
ID=44094036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206189616U Expired - Fee Related CN201851645U (en) | 2010-11-23 | 2010-11-23 | Piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851645U (en) |
-
2010
- 2010-11-23 CN CN2010206189616U patent/CN201851645U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20151123 |