CN109763975A - A kind of oil pump for DCT automatic transmission - Google Patents
A kind of oil pump for DCT automatic transmission Download PDFInfo
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- CN109763975A CN109763975A CN201811474727.8A CN201811474727A CN109763975A CN 109763975 A CN109763975 A CN 109763975A CN 201811474727 A CN201811474727 A CN 201811474727A CN 109763975 A CN109763975 A CN 109763975A
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- oil pump
- dashpot
- rotor
- oil
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Abstract
The invention discloses a kind of oil pumps for DCT automatic transmission, mainly include drive shaft, thrust washer, oil pump cover, needle roller, rotor-support-foundation system, oil pump body, bushing and driven gear.Drive shaft sequentially passes through oil pump cover, rotor-support-foundation system and oil pump body, and is fixedly connected with driven gear.Drive shaft passes through oil pump cover one end and is cased with thrust washer.One end of the fixed driven gear of the drive shaft is cased with bushing.Oil pump cover and oil pump body constitute a cavity.Rotor-support-foundation system is fixed in the cavity that oil pump cover and oil pump body are constituted by needle roller.Rotor-support-foundation system mainly includes internal rotor and outer rotor.The engagement system of internal rotor and outer rotor is two teeth difference cycloid internal messing.The present invention improves the volumetric efficiency of oil pump, avoids the occurrence of cavitation, reduces the noise of oil pump.
Description
Technical field
The present invention relates in Technology of Automatic Transmission for vehicle field, specifically a kind of oil pump for DCT automatic transmission.
Background technique
In automobile DCT automatic transmission, power source and case of the oil pump as the entire Hynautio-steering of automatic transmission
Interior each friction lubricating device is one of the key components and parts for being related to vehicle dynamic quality, economy and comfort etc..Oil pump
Working principle is the oil Pump rotor component rotation being meshed, by changing the rotor being meshed and having inhalation port and outlet side
Mouthful the shell volume variation that is formed suck and exhaust fluid.
By the structure type of oil Pump rotor, ATF pump is divided into external gear rotary pump and crescent gear pump two
Kind.Compared with crescent gear pump, external gear rotary pump there are flow pulse rates it is high, noise is higher, pocketed oil is serious the disadvantages of, from
And cause automatic transmission level of NVH lower.However due to the restriction of speed changer structure, existing automatic gearbox, especially
It is to mostly use external gear rotary pump in DCT automatic transmission.In order to improve the NVH of DCT automatic transmission, being badly in need of one kind can expire
The internal messing oil pump for automatic transmission that sufficient DCT automatic transmission structure requires.
Summary of the invention
Present invention aim to address problems of the prior art.
To realize the present invention purpose and the technical solution adopted is that a kind of such, oil pump for DCT automatic transmission,
It is characterized in that, mainly including drive shaft, thrust washer, oil pump cover, needle roller, rotor-support-foundation system, oil pump body, bushing and passive tooth
Wheel.
The drive shaft sequentially passes through oil pump cover, rotor-support-foundation system and oil pump body, and is fixedly connected with driven gear.
Oil pump cover is passed through after one end socket thrust washer of the drive shaft.
Driven gear is fixed after being socketed bushing in one end that the drive shaft extends oil pump body.
The oil pump cover and oil pump body constitute a cavity.
The oil pump cover mainly includes positioning pin, screw and oil pump cover main body.
The freedom degree of the positioning pin limitation oil pump cover main body.
Oil pump cover main body and oil pump body are fixedly connected as a cavity by several screws.
The rotor-support-foundation system is fixed in the cavity that oil pump cover and oil pump body are constituted by needle roller.
The rotor-support-foundation system mainly includes internal rotor and outer rotor.
The engagement system of the internal rotor and outer rotor is two teeth difference cycloid internal messing.
The center of the outer rotor and internal rotor eccentric setting, outer rotor and internal rotor is away from for 5.5~6.5mm.
The line at the internal rotor center and outer rotor center is denoted as l.
The internal rotor drives outer rotor rotation.
The outer rotor with a thickness of 15mm~17mm, outside diameter is 73mm~78mm, tip diameter be 51mm~
57mm.The number of teeth of the outer rotor is 10.
The internal rotor with a thickness of 15mm~17mm, the center of the internal rotor have passed through for the drive shaft it is logical
Hole.The internal rotor tip diameter is 52.4mm~58.4mm.The number of teeth of the internal rotor is 8.
The oil pump body mainly includes oil inlet, low pressure chamber, swing link, dashpot, high pressure chest and oil outlet.
The oil inlet is provided with one end of oil pump body.
The oil inlet is connected to low pressure chamber.
The swing link is provided between internal rotor and outer rotor.
The dashpot is provided in oil pump body.
The dashpot shares 5, is denoted as dashpot I, dashpot II, dashpot III, dashpot IV and dashpot respectively
V。
The tangent line and line of centres l angle of the mid point of curve of the dashpot I are denoted as j.J=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot II are denoted as e.E=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot III are denoted as k.K=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot IV are denoted as f.F=25 °~32 °.
The tangent line of the mid point of curve of the dashpot V and the linear distance at internal rotor center are denoted as h.H=4mm~6mm.
The tangent line of the mid point of curve of the dashpot V and the angle of straight line p are denoted as g.G=7 °~13 °.
The dashpot V is located at the tail end of swing link.
Dashpot I, dashpot II, dashpot III, dashpot IV and dashpot V are semiellipse type groove.
The high pressure chest is connected to oil outlet.
The oil outlet is provided with the other end of oil pump body.
The solution have the advantages that unquestionable.The present invention uses two teeth difference cycloid internally meshed rotor, significantly reduces
The flow pulse rate of oil pump, so as to improve the fluid noise of oil pump.The present invention is mentioned by the design intracorporal dashpot of oil pump
The high volumetric efficiency of oil pump, avoids the occurrence of cavitation, reduces the noise of oil pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oil pump；
Fig. 2 is oil pump schematic diagram；
Fig. 3 is internal rotor schematic diagram；
Fig. 4 is outer rotor schematic diagram；
Fig. 5 is the tank structure schematic diagram of oil pump body；
Fig. 6 is dashpot I, dashpot III position view in oil pump body oil groove；
Fig. 7 is dashpot II, dashpot IV, dashpot V position view in oil pump body oil groove；
Fig. 8 is drive shaft structural schematic diagram；
Fig. 9 is locating pin structure schematic diagram；
Figure 10 is 7 structural schematic diagram of bushing；
Figure 11 is 8 structural schematic diagram of driven gear；
In figure: drive shaft 1, thrust washer 2, oil pump cover 3, needle roller 4, rotor-support-foundation system 5, oil pump body 6, bushing 7, driven gear
8, positioning pin 31, screw 32, oil pump cover main body 33, internal rotor 51, outer rotor 52, oil inlet 61, low pressure chamber 62, swing link 63,
High pressure chest 65, dashpot I641, dashpot II642, dashpot III643, dashpot IV644 and dashpot V645 and oil outlet
66。
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment 1:
Referring to Fig. 1 to Figure 11, a kind of oil pump for DCT automatic transmission, which is characterized in that mainly include drive shaft 1,
Thrust washer 2, oil pump cover 3, needle roller 4, rotor-support-foundation system 5, oil pump body 6, bushing 7 and driven gear 8.
The drive shaft 1 sequentially passes through oil pump cover 3, rotor-support-foundation system 5 and oil pump body 6, and is fixedly connected with driven gear 8.
Oil pump cover 3 is passed through after one end socket thrust washer 2 of the drive shaft 1.
Driven gear 8 is fixed after being socketed bushing 7 in one end that the drive shaft 1 extends oil pump body 6.
The oil pump cover 3 and oil pump body 6 constitute a cavity.
The oil pump cover 3 mainly includes positioning pin 31, screw 32 and oil pump cover main body 33.
The positioning pin 31 limits the freedom degree of oil pump cover main body 33.
Positioning pin is the part for participating in limited object freedom degree, there is certain answer in the equipment of some mechanical movements
With the position for being mainly used for two-dimensional space determines
Positioning pin is to participate in the part of limited object freedom degree using workpiece hole as positioning datum, controls article in X, Y, Z
The linear motion of three axial directions, and six free movement degree of the rotary motion around X, Y, Z.By two parts or more
In the mold of composition, make the adjacent two parts accurate positionin of mold and the pin of design.
Oil pump cover main body 33 and oil pump body 6 are fixedly connected as a cavity by several screws 32.
Oil pump cover main body and oil pump body 6 match.
The rotor-support-foundation system 5 is fixed in the cavity that oil pump cover 3 and oil pump body 6 are constituted by needle roller 4.
The rotor-support-foundation system 5 mainly includes internal rotor 51 and outer rotor 52.
The engagement system of the internal rotor 51 and outer rotor 52 is two teeth difference cycloid internal messing.
The center of 51 eccentric setting of the outer rotor 52 and internal rotor, outer rotor 52 and internal rotor 51 away from for 5.5~
6.5mm。
The line at 51 center of internal rotor and 52 center of outer rotor is denoted as l.
The internal rotor 51 drives outer rotor 52 to rotate.
The outer rotor 52 with a thickness of 15mm~17mm, outside diameter is 73mm~78mm, tip diameter 51mm
~57mm.The number of teeth of the outer rotor 52 is 10.
The internal rotor 51 with a thickness of 15mm~17mm, the center of the internal rotor 51 has wears for the drive shaft 1
The through-hole crossed.The tip diameter is 52.4mm~58.4mm.The number of teeth of the internal rotor 51 is 8.
The oil pump body 6 mainly includes oil inlet 61, low pressure chamber 62, swing link 63, dashpot, high pressure chest 65 and oil outlet
66。
The oil inlet 61 is provided with one end of oil pump body 6.
The oil inlet 61 is connected to low pressure chamber 62.
The swing link 63 is provided between internal rotor 51 and outer rotor 52.
The dashpot is provided in oil pump body 6.
The dashpot shares 5, is denoted as dashpot I641, dashpot II642, dashpot III643, dashpot respectively
IV644 and dashpot V645.
The tangent line and line of centres l angle of the mid point of curve of the dashpot I641 are denoted as j.J=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot II642 are denoted as e.E=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot III643 are denoted as k.K=20 °~27 °.
The tangent line and line of centres l angle of the mid point of curve of the dashpot IV644 are denoted as f.F=25 °~32 °.
The tangent line of the mid point of curve of the dashpot V645 and the linear distance at internal rotor center are denoted as h.H=4mm~
6mm。
The tangent line of the mid point of curve of the dashpot V645 and the angle of straight line p are denoted as g.G=7 °~13 °.
The dashpot V645 is located at the tail end of swing link 63.
Dashpot I641, dashpot II642, dashpot III643, dashpot IV644 and dashpot V645 are semiellipse
Type groove.
The high pressure chest 65 is connected to oil outlet 66.
The oil outlet 66 is provided with the other end of oil pump body 6.
Claims (7)
1. a kind of oil pump for DCT automatic transmission, it is characterised in that: mainly include drive shaft (1), thrust washer (2), institute
State oil pump cover (3), needle roller (4), rotor-support-foundation system (5), oil pump body (6), bushing (7) and driven gear (8)；
The drive shaft (1) sequentially passes through oil pump cover (3), rotor-support-foundation system (5) and oil pump body (6), and fixed with driven gear (8)
Connection；
One end socket thrust washer (2) of the drive shaft (1) passes through oil pump cover (3) afterwards；
One end socket bushing (7) that the drive shaft (1) extends oil pump body (6) fixes driven gear (8) afterwards；
The oil pump cover (3) and oil pump body (6) constitute a cavity；
The rotor-support-foundation system (5) is fixed in the cavity that oil pump cover (3) and oil pump body (6) are constituted by needle roller (4)；
The rotor-support-foundation system (5) mainly includes internal rotor (51) and outer rotor (52)；
The engagement system of the internal rotor (51) and outer rotor (52) is two teeth difference cycloid internal messing；
The line at internal rotor (51) center and outer rotor (52) center is denoted as l；
The internal rotor (51) center is crossed, and is denoted as p perpendicular to the straight line of oil inlet (61) end face；
The internal rotor (51) drives outer rotor (52) rotation；
The oil pump body (6) mainly include oil inlet (61), low pressure chamber (62), swing link (63), dashpot, high pressure chest (65) and
Oil outlet (66)；
The oil inlet (61) is provided with one end of oil pump body (6)；
The oil inlet (61) is connected to low pressure chamber (62)；
The swing link (63) is provided between internal rotor (51) and outer rotor (52)；
The dashpot is provided in oil pump body (6)；
The dashpot shares 5, is denoted as dashpot I (641), dashpot II (642), dashpot III (643), buffering respectively
Slot IV (644) and dashpot V (645)；
The tangent line and line of centres l angle of the mid point of curve of the dashpot I (641) are denoted as j；
The tangent line and line of centres l angle of the mid point of curve of the dashpot II (642) are denoted as e；
The tangent line and line of centres l angle of the mid point of curve of the dashpot III (643) are denoted as k；
The tangent line and line of centres l angle of the mid point of curve of the dashpot IV (644) are denoted as f；
The tangent line of mid point of curve and the linear distance at internal rotor center of the dashpot V (645) are denoted as h；
The tangent line of mid point of curve and the angle of straight line p of the dashpot V (645) are denoted as g；
The dashpot V (645) is located at the tail end of swing link (63)；
The high pressure chest (65) is connected to oil outlet (66)；
The oil outlet (66) is provided with the other end of oil pump body (6).
2. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: j=20 °~27 °；k
=20 °~27 °；E=20 °~27 °；F=25 °~32 °；G=7 °~13 °；H=4mm~6mm.
3. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: the outer rotor
(52) with a thickness of 15mm~17mm, outside diameter is 73mm~78mm, and tip diameter is 51mm~57mm；The outer rotor
(52) the number of teeth is 10.
4. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: the internal rotor
(51) with a thickness of 15mm~17mm；
The center of the internal rotor (51) has the through-hole passed through for the drive shaft (1)；
Internal rotor (51) tip diameter is 52.4mm~58.4mm；The number of teeth of the internal rotor (51) is 8；Turn in described
The number of teeth difference of sub (51) and outer rotor (52) is 2.
5. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: the outer rotor
(52) and internal rotor (51) eccentric setting, the center of outer rotor (52) and internal rotor (51) is away from for 5.5~6.5mm.
6. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: the oil pump cover (3)
It mainly include positioning pin (31), screw (32) and oil pump cover main body (33)；
The freedom degree of positioning pin (31) limitation oil pump cover main body (33)；
Oil pump cover main body (33) and oil pump body (6) are fixedly connected as a cavity by several screws (32).
7. a kind of oil pump for DCT automatic transmission according to claim 1, it is characterised in that: dashpot I (641),
Dashpot II (642), dashpot III (643), dashpot IV (644) and dashpot V (645) are semiellipse type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474727.8A CN109763975A (en) | 2018-12-04 | 2018-12-04 | A kind of oil pump for DCT automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474727.8A CN109763975A (en) | 2018-12-04 | 2018-12-04 | A kind of oil pump for DCT automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109763975A true CN109763975A (en) | 2019-05-17 |
Family
ID=66450490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474727.8A Pending CN109763975A (en) | 2018-12-04 | 2018-12-04 | A kind of oil pump for DCT automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763975A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701042A (en) * | 2019-11-06 | 2020-01-17 | 绵阳富临精工机械股份有限公司 | Electronic oil pump transmission structure |
| CN111043294A (en) * | 2019-12-30 | 2020-04-21 | 綦江齿轮传动有限公司 | Cycloid inner rotor oil pump device for front power takeoff |
| CN111173737A (en) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | Integrated oil pumping device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69521950T2 (en) * | 1994-09-15 | 2002-01-24 | Eaton Corp | Internal gear system |
| CN107035682A (en) * | 2016-02-04 | 2017-08-11 | 株式会社捷太格特 | Oil pump |
| CN206562991U (en) * | 2016-08-29 | 2017-10-17 | 重庆红宇精密工业有限责任公司 | A kind of ATF pump with oil guide groove |
| CN207920846U (en) * | 2018-02-13 | 2018-09-28 | 杭州前进通用机械有限公司 | A kind of oil pump anti-cavitation noise reducing structure |
-
2018
- 2018-12-04 CN CN201811474727.8A patent/CN109763975A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69521950T2 (en) * | 1994-09-15 | 2002-01-24 | Eaton Corp | Internal gear system |
| CN107035682A (en) * | 2016-02-04 | 2017-08-11 | 株式会社捷太格特 | Oil pump |
| CN206562991U (en) * | 2016-08-29 | 2017-10-17 | 重庆红宇精密工业有限责任公司 | A kind of ATF pump with oil guide groove |
| CN207920846U (en) * | 2018-02-13 | 2018-09-28 | 杭州前进通用机械有限公司 | A kind of oil pump anti-cavitation noise reducing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173737A (en) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | Integrated oil pumping device |
| CN110701042A (en) * | 2019-11-06 | 2020-01-17 | 绵阳富临精工机械股份有限公司 | Electronic oil pump transmission structure |
| CN110701042B (en) * | 2019-11-06 | 2024-03-01 | 四川芯智热控技术有限公司 | Electronic oil pump transmission structure |
| CN111043294A (en) * | 2019-12-30 | 2020-04-21 | 綦江齿轮传动有限公司 | Cycloid inner rotor oil pump device for front power takeoff |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
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| RJ01 | Rejection of invention patent application after publication |