CN203770074U - Brake pump piston ring of car air compressor - Google Patents
Brake pump piston ring of car air compressor Download PDFInfo
- Publication number
- CN203770074U CN203770074U CN201420042927.7U CN201420042927U CN203770074U CN 203770074 U CN203770074 U CN 203770074U CN 201420042927 U CN201420042927 U CN 201420042927U CN 203770074 U CN203770074 U CN 203770074U
- Authority
- CN
- China
- Prior art keywords
- ring
- air compressor
- piston
- brake pump
- piston ring
- 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
Links
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 abstract description 5
- 239000010721 machine oil Substances 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 2
- 210000001331 nose Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
Landscapes
- Compressor (AREA)
Abstract
The utility model discloses a brake pump piston ring of a car air compressor. The brake pump piston ring comprises a first ring and a second ring. A first piston ring groove embedded into the first ring and a second piston ring groove embedded into the second ring are formed in the circumferential direction in the top of a piston from top to bottom, and the first ring and the second ring are opposite in torsion direction and form a piston ring set. According to the piston ring, the torsion directions are opposite so that the sealing effect can be improved, downward exhaust gas of the air compressor is reduced, pressure of a crank case of the air compressor is controlled, machine oil upward pumping is avoided, and the oil pumping failure rate of the air compressor is reduced by 45%.
Description
Technical field
The utility model relates to a kind of piston ring, is specifically related to a kind of brake pump piston ring.
Background technique
Existing vehicle air compressor piston ring adopts nose shape taper-face ring, and the operation surface of taper-face ring is tapered, and the conical surface upwards reduces gradually, and the bottom of nose shape taper-face ring is provided with a small-rabbet, and notch down.Piston ring in vehicle air compressor is compression ring, Main Function is the sealing that ensures piston and cylinder wall, wherein, the sealing effect of first ring accounts for 80 ~ 90% of piston ring integral sealing effect, conventionally the first ring in vehicle air compressor is positive distortion external nose conical ring, be unfavorable for air compressor envelope gas, under air compressor, exhaust is larger.
Model utility content
Model utility object: the purpose of this utility model is for the deficiencies in the prior art, and a kind of brake pump piston ring of vehicle air compressor is provided, for solving the heavy problem of exhaust under air compressor.
Technological scheme: the utility model provides a kind of brake pump piston ring of vehicle air compressor, comprise first ring and second ring, from piston head, from top to bottom along circumferentially having the first piston annular groove that embeds first ring and the second-ring groove that embeds second ring, described first ring and second ring are the contrary piston ring of distortion; No matter on can effectively controlling in the sideshake of machinery oil between piston ring and piston ring groove, alter, be in piston stroking upward and descending process, and the contrary bipassage ring of distortion all forms linear sealing face with annular groove end face.
Further, described first ring is reverse torsion ring, and described second ring is positive twist type ring; In the time of up-stroke of piston, the outside, lower end surface of reverse torsion ring contacts with annular groove lower end surface, and inner side, positive twist type ring lower end surface contacts with piston ring groove lower end surface, thereby forms the oily passage of altering of sealing; On the other hand, in the time of descent of piston, inner side, reverse torsion ring upper-end surface contacts with annular groove upper-end surface, end in contact on outside, positive twist type ring upper-end surface and annular groove, and shape airtight passage reduces alters oil.
Preferably, the end-gaps of described first ring and second ring is 0.05 ~ 0.25mm, and this small closed end can dwindle the passage of altering that lubricates in brake pump crankcase effectively, alters oil thereby reduce brake pump.
Further, described first ring and second ring are taper-face ring, and taper-face ring not only has effect of the sealing gas of rectangular ring, also play the effect that increases frizing simultaneously.
Preferably, the conical surface angle of the second ring of described first ring is 2 ° ± 30 ', can increase the contact angle between piston ring and cylinder sleeve, increase the frizing ability of piston ring.
Beneficial effect: the utility model carrys out lift-off seal effect by the contrary direction of twist of piston ring, reduces the lower exhaust of air compressor, controls the air pressure in air compressor crankcase, prevents from altering on machine oil, makes air compressor alter oily failure of removal rate and declines 45%.
Brief description of the drawings
Fig. 1 is piston ring and the annular groove situation schematic diagram when up;
Fig. 2 is piston ring and the annular groove situation schematic diagram when descending;
Fig. 3 is the structural representation of piston ring;
Fig. 4 is the sectional drawing of first ring along A-A face in Fig. 3;
Fig. 5 is the sectional drawing of second ring along A-A face in Fig. 3
Embodiment
Below technical solutions of the utility model are elaborated, but protection domain of the present utility model is not limited to described embodiment.
embodiment:a kind of brake pump piston ring of vehicle air compressor, comprise first ring 1 and second ring 2, embed the first piston annular groove 4 of first ring 1 and the second-ring groove 5 of embedding second ring 2 along circumferentially having from top to bottom from piston 3 tops, the taper-face ring that first ring 1 is anti-twist, the taper-face ring that second ring 2 is positive distortion, the end-gaps S of bipassage ring is 0.10mm, as shown in Figure 3; The conical surface angle of first ring 1 is 2 ° ± 30 ', as shown in Figure 4; The conical surface angle of second ring 2 is 2 ° ± 30 ', as shown in Figure 5; In the time of piston 3 up stroke, as shown in Figure 1, the positive reverse torsion ring of working state produces small distortion angle α under distortion action, wherein, the anti-twist angle α that reverse torsion ring produces makes the outside, lower end surface of reverse torsion ring contact with annular groove lower end surface, the anti-twist angle α that positive twist type ring produces makes inner side, positive twist type ring lower end surface contact with piston ring groove lower end surface, thereby forms the oily passage of altering of sealing; In like manner, in the time that piston 3 is descending, as shown in Figure 2, inner side, reverse torsion ring upper-end surface contacts with annular groove upper-end surface, end in contact on outside, positive twist type ring upper-end surface and annular groove, channels in crankcase under the gas at shape airtight passage minimizing piston 3 tops, thereby reduces brake pump in the time of negative inspiratory pressure stroke, because the anticyclonic lubricant mist suck-back in crankcase enters piston head, and then discharge to form with gas and alter oil.
As mentioned above, although represented and explained the utility model with reference to specific preferred embodiment, it shall not be construed as the restriction to the utility model self.Not departing under the spirit and scope prerequisite of the present utility model of claims definition, can make in the form and details various variations to it.
Claims (5)
1. the brake pump piston ring of a vehicle air compressor, it is characterized in that: comprise first ring and second ring, from piston head, from top to bottom along circumferentially having the first piston annular groove that embeds first ring and the second-ring groove that embeds second ring, described first ring and second ring are the contrary piston ring group of distortion.
2. the brake pump piston ring of vehicle air compressor according to claim 1, is characterized in that: described first ring is reverse torsion ring, and described second ring is positive twist type ring.
3. the brake pump piston ring of vehicle air compressor according to claim 1, is characterized in that: the end-gaps of described first ring and second ring is 0.05 ~ 0.25mm.
4. the brake pump piston ring of vehicle air compressor according to claim 1, is characterized in that: described first ring and second ring are taper-face ring.
5. the brake pump piston ring of vehicle air compressor according to claim 4, is characterized in that: the conical surface angle of described first ring and second ring is 2 ° ± 30 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042927.7U CN203770074U (en) | 2014-01-23 | 2014-01-23 | Brake pump piston ring of car air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042927.7U CN203770074U (en) | 2014-01-23 | 2014-01-23 | Brake pump piston ring of car air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770074U true CN203770074U (en) | 2014-08-13 |
Family
ID=51287271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420042927.7U Expired - Fee Related CN203770074U (en) | 2014-01-23 | 2014-01-23 | Brake pump piston ring of car air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790803A (en) * | 2014-01-23 | 2014-05-14 | 南京飞燕活塞环股份有限公司 | Brake pump piston ring of car air compressor |
-
2014
- 2014-01-23 CN CN201420042927.7U patent/CN203770074U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790803A (en) * | 2014-01-23 | 2014-05-14 | 南京飞燕活塞环股份有限公司 | Brake pump piston ring of car air compressor |
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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: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |