CN201377422Y - Anti-rotation structure for piston - Google Patents
Anti-rotation structure for piston Download PDFInfo
- Publication number
- CN201377422Y CN201377422Y CN200820238550U CN200820238550U CN201377422Y CN 201377422 Y CN201377422 Y CN 201377422Y CN 200820238550 U CN200820238550 U CN 200820238550U CN 200820238550 U CN200820238550 U CN 200820238550U CN 201377422 Y CN201377422 Y CN 201377422Y
- Authority
- CN
- China
- Prior art keywords
- piston
- rotation
- swash plate
- protecgulum
- projection
- 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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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model relates to an anti-rotation structure for a piston, wherein the lower part of the piston is connected with a swash plate while the upper part thereof is positioned between the swash plate and a front cover, the piston is in clearance fit with the front cover, and the utility model is characterized in that: the upper part of the piston is provided with an anti-rotation projection. The utility model reduces the offset angle of the piston, prevents free rotation of the piston, avoids intervention of the piston with the swash plate and reduces noise, friction and power consumption of a compressor.
Description
Technical field
The utility model relates to the piston of Vehicular air-conditioner compressor, is specifically related to a kind of rotation prevention structure of piston.
Background technique
At present, the piston of Vehicular air-conditioner compressor is assemblied in the cylinder body, and the top of piston is opened and is provided with two semicircle steel balls that the bottom surface is parallel to each other in the shelves, and swash plate is embedded between the working plane that is parallel to each other of two semicircle steel balls, and can slide betwixt.Because protecgulum and piston top have certain interval, behind the compressor start, piston crown had certain rotation skew when piston moved reciprocatingly, and piston can free rotate about 13 ° around center, cylinder piston hole.Compressor is when operation, and piston rotates freely around center, cylinder hole, easily causes out shelves and swash plate to be interfered.Vibration, the noise of compressor are big, and power consumption increases, and because point of contact rubs for a long time, and piston wear aggravates, the angle of piston rotation skew will further enlarge, and finally cause taking place between piston and swash plate the locking stuck phenomenon.
Summary of the invention
The purpose of this utility model provides a kind of rotation prevention structure of piston, and it reduces the angle of piston skew, prevents that piston from rotating freely, and avoids the interference of piston and swash plate; Reduce noise, friction and the power consumption of compressor.
The purpose of this utility model is achieved in that the bottom of piston crown is connected with swash plate, and top is between swash plate and protecgulum, and the Spielpassung of piston and protecgulum is characterized in that; The top of described piston is provided with the anti-rotation projection.
Described anti-rotation projection is positioned at the extended surface on piston top, is symmetricly set on the extended surface on piston top.
Described piston is around angle of swing≤5 at center, cylinder piston hole °
Owing to adopt technique scheme, the top of piston crown is provided with the anti-rotation projection, projection increases outer surface of piston curvature, the gap of piston and protecgulum reduces, when the protecgulum rotating band is moved piston rotation, the anti-rotation projection promptly contacts with protecgulum, because piston is around center, cylinder piston hole angle of swing≤5 °, reduce greatly with respect to traditional piston 13 °, can prevent the further rotation of piston, make and hold shelves and can not contact with swash plate around center, cylinder piston hole angle of swing, eliminated and opened the shelves and the interference of swash plate, it is stuck to avoid that locking takes place between piston and swash plate, reduces the collision of piston and protecgulum, reduces the noise of compressor, friction and power consumption.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation after the utility model piston rotation.
In the accompanying drawing, 1 is swash plate, and 2 is piston crown top, and 2a is that piston is opened shelves, and 2b is the anti-rotation projection, and 3 is protecgulum, and 4 is the piston crown bottom.
Embodiment
Referring to Fig. 1, the bottom 4 of piston crown is opened grade 2a by the piston of groove-fastening type and is connected with swash plate 1, and the piston clearance is assemblied in the compressor protecgulum 3, and the top 2 of described piston crown is provided with anti-rotation projection 2b.The anti-rotation projection is positioned at the extended surface on the top of piston crown, and the anti-rotation projection is symmetricly set on the extended surface on piston crown top, and the gap of piston and protecgulum is reduced, and is used for the limited piston rotation angle, and described piston is around angle of swing≤5 at center, cylinder piston hole °.
Referring to Fig. 2, during pistons work, piston moves reciprocatingly in the piston hole of cylinder body, and the top of piston crown has certain rotation skew with reciprocating motion of the pistons in protecgulum.When piston rotation skew, the extended surface in the top of piston crown moves upward, because the anti-rotation projection reduces piston face and protecgulum gap, projection contacts with protecgulum, the piston rotation angle is limited in about 5 °, anti-rotation projection contact with protecgulum spacing after, piston is opened grade and swash plate also has certain distance, avoid piston to open the shelves place and interfere, reduce friction with swash plate; When piston rotated round about, the anti-rotation of another extended surface of top of piston crown projection contacted spacing with protecgulum, avoided piston to open the shelves place equally and interfered with swash plate, reduced friction, reduced the noise of compressor simultaneously, reduced consumption of compressor.
Claims (4)
1. the rotation prevention structure of a piston, the bottom of piston crown is connected with swash plate, and top is between swash plate and protecgulum, and the Spielpassung of piston and protecgulum is characterized in that; The top of described piston is provided with the anti-rotation projection.
2. the rotation prevention structure of piston according to claim 1, it is characterized in that: described anti-rotation projection is positioned at the extended surface on piston top.
3. the rotation prevention structure of piston according to claim 2, it is characterized in that: described anti-rotation projection is symmetricly set on the extended surface on piston top.
4. the rotation prevention structure of piston according to claim 1, it is characterized in that: described piston is≤5 ° around the angle of swing at center, cylinder piston hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820238550U CN201377422Y (en) | 2008-12-31 | 2008-12-31 | Anti-rotation structure for piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820238550U CN201377422Y (en) | 2008-12-31 | 2008-12-31 | Anti-rotation structure for piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377422Y true CN201377422Y (en) | 2010-01-06 |
Family
ID=41517530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820238550U Expired - Fee Related CN201377422Y (en) | 2008-12-31 | 2008-12-31 | Anti-rotation structure for piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377422Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843422A (en) * | 2020-08-04 | 2020-10-30 | 中国工程物理研究院总体工程研究所 | Auxiliary anti-rotation structure containing micro-gap dissimilar material assembly body |
| WO2021109087A1 (en) * | 2019-12-04 | 2021-06-10 | 惠州海卓科赛医疗有限公司 | Pumping system |
-
2008
- 2008-12-31 CN CN200820238550U patent/CN201377422Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021109087A1 (en) * | 2019-12-04 | 2021-06-10 | 惠州海卓科赛医疗有限公司 | Pumping system |
| CN111843422A (en) * | 2020-08-04 | 2020-10-30 | 中国工程物理研究院总体工程研究所 | Auxiliary anti-rotation structure containing micro-gap dissimilar material assembly body |
| CN111843422B (en) * | 2020-08-04 | 2022-06-24 | 中国工程物理研究院总体工程研究所 | Auxiliary anti-rotation structure containing micro-gap dissimilar material assembly body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Building Vehicle Use Air-Conditioner Co., Ltd. Assignor: Chongqing Jianshe Motorcycle Co., Ltd. Contract record no.: 2013500000069 Denomination of utility model: Anti-rotation structure for piston Granted publication date: 20100106 License type: Exclusive License Record date: 20130829 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160708 Address after: 400052 Chongqing Jiulongpo Huajian branch No. 1 Patentee after: Chongqing Building Vehicle Use Air-Conditioner Co., Ltd. Address before: Zheng Jie 400050 Xiejiawan Jiulongpo District of Chongqing City No. 47 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20171231 |