CN102425543A - Oil pump structure of gear box - Google Patents
Oil pump structure of gear box Download PDFInfo
- Publication number
- CN102425543A CN102425543A CN2011102378603A CN201110237860A CN102425543A CN 102425543 A CN102425543 A CN 102425543A CN 2011102378603 A CN2011102378603 A CN 2011102378603A CN 201110237860 A CN201110237860 A CN 201110237860A CN 102425543 A CN102425543 A CN 102425543A
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- oil
- rotor
- groove
- external rotor
- internal rotor
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- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 58
- 206010044565 Tremor Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to an oil pump structure of a gear box and belongs to the field of rotor oil pumps. The structure comprises a front shell, a rear shell, an inner rotor and an outer rotor, wherein the inner rotor and the outer rotor are arranged in a pump cavity of the front shell; the inner rotor is sleeved in the outer rotor; an eccentric circle structure is formed by the inner rotor and the outer rotor; an oil seal is arranged outside the front shell; a sealing ring is arranged outside the rear shell; an oil outlet slot and an oil suction slot are formed on the front shell; a guide slot is formed at the inlet end of the oil outlet slot and along the oil outlet slot; the width of the guide slot is less than that of the inlet end of the oil outlet slot; and the distance between the suction end of the oil suction slot and a central connecting line of an eccentric circle formed by the inner rotor and the outer rotor is longer than that between the discharging end of the oil outlet slot and the central connecting line of the eccentric circle formed by the inner rotor and the outer rotor. According to the problems of unstable oil pressure, cavitation, noise, even tightly blocking, and the like, occurring during the working process of the oil pump can be solved. The structure provided by the invention has the advantages of simple structure, excellent manufacturability, convenience in implementation and extensive use in rotor oil pump.
Description
Technical field
The present invention relates to a kind of rotor oil pump structure, especially relate to a kind of gear box oil pump structure.
Background technique
The oil pump device of automatic transmission case generally adopts oil pump front case, rear case, external rotor, internal rotor, on front case, is provided with pump chamber in the market; Internal rotor is inserted in external rotor; Inner and outer rotors attaches together in the pump chamber of front case, loads onto the oil pump device that forms an integral body behind the rear case, though simple in structure; Easy to operate; But the end that goes out the suction end of oil groove is not provided with than does not suck the little steering channel of end width, thereby makes oil pressure locate rapid change at this, causes the phenomenon of oil pressure shakiness, air pocket, noise; The distance of circle center line connecting that the oil suction groove sucks the eccentric circle that end and internal rotor and external rotor constitute is more identical with the distance of the circle center line connecting of the eccentric circle of external rotor formation with internal rotor than going out the oil groove end that spues, and is shut interference generation noise between inner and outer rotors easily because of oil.
Summary of the invention
The purpose of this invention is to provide a kind of gear box oil pump structure, solve present oil pump in the work engineering, the time regular meeting oil pressure shakiness, air pocket, noise even problem such as stuck appear.
The technical solution adopted for the present invention to solve the technical problems is: a kind of gear box oil pump structure; Comprise front case, rear case is arranged on internal rotor, external rotor in the pump chamber of front case; Internal rotor is enclosed within the external rotor, and internal rotor and external rotor are an eccentric circle structure; In the front case arranged outside oil sealing is arranged, seal ring is arranged in the arranged outside of rear case; Described front case is provided with out oil groove and oil suction groove; For avoiding the oil pressure rapid change to produce air pocket, be provided with one along the steering channel that goes out the oil groove direction at the inlet end that goes out oil groove, it is narrow that the width ratio of steering channel goes out the oil groove inlet end.
For avoiding inner and outer rotors in running; Going out oil groove spues between end and the oil suction groove suction end; Oil is shut; Cause that inner and outer rotors interfere to produce noise, described oil suction groove suck the eccentric circle that end and internal rotor and external rotor constitute circle center line connecting distance than go out oil groove spue end and the internal rotor and the eccentric circle of external rotor formation circle center line connecting apart from length.
Beneficial effect of the present invention: be provided with one along the steering channel that goes out the oil groove direction at the suction end that goes out oil groove, suppressed the oil pressure rapid change, avoid the generation of air pocket.The oil suction groove suck the eccentric circle that end and internal rotor and external rotor constitute circle center line connecting distance than go out oil groove spue end and the internal rotor and the eccentric circle of external rotor formation circle center line connecting apart from length; Can avoid inner and outer rotors in running; Going out oil groove spues between end and the oil suction groove suction end; Oil is shut, and causes that the inner and outer rotors interference produces noise even stuck.
Below will combine accompanying drawing and embodiment, the present invention will be carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the plan view of front case.
Fig. 2 is the decomposition view of this oil pump structure.
Embodiment
Like Fig. 1, shown in Figure 2, a kind of gear box oil pump structure comprises front case 1, and rear case 2 is arranged on internal rotor 3, external rotor 4 in the pump chamber of front case 1, and internal rotor 3 is enclosed within the external rotor 4, and internal rotor 3 is an eccentric circle structure with external rotor 4; In front case 1 arranged outside oil sealing 5 is arranged, seal ring 6 is arranged in the arranged outside of rear case 2; Described front case is provided with out oil groove 7 and oil suction groove 8; In the oil pump working procedure; External rotor 4 drives internal rotor 3 and does friction speed rotation in the same way, and oil suction groove 8 end internal rotors 3 break away from engagement gradually with external rotor 4, form cavity; Accomplish oil suction; Go out oil groove 7 end internal rotors 3 and mesh gradually with external rotor 4, the volume that internal rotor 3 and external rotor are 4 diminishes, and hydraulic oil is extruded from the end 72 that spues that goes out oil groove 7.For avoiding the oil pressure rapid change to produce air pocket; Be provided with one along the steering channel 9 that goes out oil groove 7 directions at the inlet end that goes out oil groove 7 71; The width of steering channel 9 is narrower than the inlet end 71 that goes out oil groove 7; For reaching better guiding effect, described steering channel 9 width be oil groove 7 inlet end 71 width 1/4th.
Described oil suction groove 8 suck the eccentric circle that end 81 and internal rotor and external rotor constitute circle center line connecting 10 distance than go out oil groove 7 spue the eccentric circle that end 72 and internal rotor and external rotor constitute circle center line connecting 10 apart from length; Avoid inner and outer rotors in running; Going out oil groove 7 spues between end 72 and the oil suction groove 8 suction ends 81; Oil is shut, and causes that inner and outer rotors interfere to produce noise, even the stuck generation of internal rotor 3 and external rotor 4.For reaching better effect, describedly go out oil groove 7 and spue distance that end 72 and oil suction groove 8 suck end 81 than internal rotor 3 and the distance 3.5mm of external rotor 4 between these position two mesh tooth faces.
Claims (4)
1. a gear box oil pump structure comprises front case, and rear case is arranged on internal rotor, external rotor in the pump chamber of front case, and internal rotor is enclosed within the external rotor, and internal rotor and external rotor are an eccentric circle structure; In the front case arranged outside oil sealing is arranged, seal ring is arranged in the arranged outside of rear case; Described front case is provided with out oil groove and oil suction groove; It is characterized in that: be provided with one along the steering channel that goes out the oil groove direction at the inlet end that goes out oil groove, it is narrow that the width ratio of steering channel goes out the oil groove inlet end.
2. gear box oil pump structure as claimed in claim 1 is characterized in that: described oil suction groove suck the eccentric circle that end and internal rotor and external rotor constitute circle center line connecting distance than go out oil groove spue end and the internal rotor and the eccentric circle of external rotor formation circle center line connecting apart from length.
3. gear box oil pump structure as claimed in claim 1 is characterized in that: described steering channel width is oil groove to suck 1/4th of end width.
4. gear box oil pump structure as claimed in claim 2 is characterized in that: described oil suction groove sucks the distance of circle center line connecting of the eccentric circle that end and internal rotor and external rotor constitute than going out the spue distance 3.5mm of circle center line connecting of eccentric circle of end and internal rotor and external rotor formation of oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102378603A CN102425543A (en) | 2011-08-18 | 2011-08-18 | Oil pump structure of gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102378603A CN102425543A (en) | 2011-08-18 | 2011-08-18 | Oil pump structure of gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102425543A true CN102425543A (en) | 2012-04-25 |
Family
ID=45959563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102378603A Pending CN102425543A (en) | 2011-08-18 | 2011-08-18 | Oil pump structure of gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102425543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514538A (en) * | 2017-09-22 | 2017-12-26 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump for reducing noise |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200238A (en) * | 1995-01-31 | 1996-08-06 | Nissan Motor Co Ltd | Pump for automatic transmission |
| JP2003227474A (en) * | 2002-02-06 | 2003-08-15 | Sumitomo Electric Ind Ltd | Internal gear pump |
| JP2006017092A (en) * | 2004-07-05 | 2006-01-19 | Aisin Aw Co Ltd | Oil pump for automatic transmission |
| CN201892017U (en) * | 2010-11-13 | 2011-07-06 | 湖南机油泵股份有限公司 | Rotor oil pump of gear box |
| CN102141037A (en) * | 2011-03-08 | 2011-08-03 | 孙国校 | High-pressure hydraulic pressure vane pump |
| CN201916685U (en) * | 2010-11-17 | 2011-08-03 | 宁波圣龙汽车动力系统股份有限公司 | Lube pump body of speed changing box |
-
2011
- 2011-08-18 CN CN2011102378603A patent/CN102425543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200238A (en) * | 1995-01-31 | 1996-08-06 | Nissan Motor Co Ltd | Pump for automatic transmission |
| JP2003227474A (en) * | 2002-02-06 | 2003-08-15 | Sumitomo Electric Ind Ltd | Internal gear pump |
| JP2006017092A (en) * | 2004-07-05 | 2006-01-19 | Aisin Aw Co Ltd | Oil pump for automatic transmission |
| CN201892017U (en) * | 2010-11-13 | 2011-07-06 | 湖南机油泵股份有限公司 | Rotor oil pump of gear box |
| CN201916685U (en) * | 2010-11-17 | 2011-08-03 | 宁波圣龙汽车动力系统股份有限公司 | Lube pump body of speed changing box |
| CN102141037A (en) * | 2011-03-08 | 2011-08-03 | 孙国校 | High-pressure hydraulic pressure vane pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514538A (en) * | 2017-09-22 | 2017-12-26 | 湖南机油泵股份有限公司 | A kind of rotor-type oil pump for reducing noise |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160713 Address after: 241000 Wuhu economic and Technological Development Zone, Changchun Road, No. 8, No. Applicant after: Chery Holding Co., Ltd. Address before: 241000 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road Applicant before: Saic Chery Automobile Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120425 |