CN203453050U - Automatic transmission oil pump for vehicle - Google Patents
Automatic transmission oil pump for vehicle Download PDFInfo
- Publication number
- CN203453050U CN203453050U CN201320483809.5U CN201320483809U CN203453050U CN 203453050 U CN203453050 U CN 203453050U CN 201320483809 U CN201320483809 U CN 201320483809U CN 203453050 U CN203453050 U CN 203453050U
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- CN
- China
- Prior art keywords
- oil pump
- pump
- boss
- automatic transmission
- rotor
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- 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 - Lifetime
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to the technical field of automotive automatic transmissions and in particular relates to an automatic transmission oil pump for a vehicle. The automatic transmission oil pump comprises a pump body, a pump cover, an inner rotor and an outer rotor, wherein the outer rotor is arranged in a shell on the pump body; the inner rotor is arranged inside the outer rotor; a boss is arranged at the bottom of the pump body; a shaft sleeve is assembled on the boss; an annular slotted hole is formed in the middle of the inner rotor; a bushing is assembled on the annular slotted hole; when the inner rotor is arranged inside the outer rotor, the shaft sleeve is positioned in the bushing of the inner rotor and is in clearance fit with the bushing. According to connection between the bushing and the shaft sleeve, the positioning accuracy between the inner rotor and the pump body is improved, so that the volume efficiency of the oil pump is improved, the oil consumption is reduced, and the noise of the oil pump is reduced.
Description
Technical field
The utility model relates to Technology of Automatic Transmission for vehicle field, is specifically related to a kind of oil pump for automatic transmission of automobile.
Background technique
At present vehicle automatic transmission kind is roughly divided three kinds: i.e. tri-kinds of structural types of CVT, AT and DCT, its Clutch Control, lubricated, cooling be all to realize by hydraulic system, and the dynamical element of hydraulic system is oil pump.
For car load, noise level and fuel consumption are two important indexs.Oil pump is a main noise source, so will control the noise of oil pump.The spent power of oil pump is idle work, accounts for the major part of the fuel consume of whole speed changer.Power and the discharge capacity of oil pump are proportional, so, require oily pump delivery as far as possible little, to reduce power loss.Due to the requirement on manufacturing, between the rotor and the pump housing of oil pump, and between inner and outer Rotator, all there is gap, oil pump inevitably exists and leaks and noise problem, if leak conference, caused volumetric efficiency to decline, the flow of the actual output of oil pump reduces, thereby produces the negative consequence that similar oil pump capacity reduces.
So, must reduce the leakage rate of oil pump, improve volumetric efficiency.For same speed changer, improve volumetric efficiency and can make the discharge capacity of oil pump reduce, reduce the input torque of oil pump, thereby improve fuel economy.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of oil pump that can effectively reduce leakage rate, raising volumetric efficiency, reduce noise is provided.
The utility model adopts following technological scheme to achieve these goals: a kind of oil pump for automatic transmission of automobile, comprises the pump housing, pump cover, internal rotor and external rotor; Described external rotor is arranged in the housing on the pump housing, and described internal rotor is arranged on external rotor inside, in the bottom of the described pump housing, is provided with boss, on this boss, is equipped with axle sleeve; The middle part of described internal rotor has annular slotted hole, on this annular slotted hole, is equipped with lining; When internal rotor is arranged on external rotor inside, lining and lining that described axle sleeve is positioned at internal rotor form Spielpassung.
As optimal way of the present utility model, the bottom of the described pump housing is provided with cylindrical boss, and axle sleeve is assemblied on this boss.
As another kind of optimal way of the present utility model, the bottom of the described pump housing is provided with the cylindrical boss of hollow, and axle sleeve is assemblied in this boss.
For making to coordinate closely between parts, prevent that it from use becoming flexible or coming off, above-mentioned axle sleeve and boss are interference fit, lining and annular slotted hole are interference fit.
The utility model has the advantages that:
1, by being connected between lining and axle sleeve, having improved the positioning precision of internal rotor and the pump housing, thereby improved in the running the volumetric efficiency of oil pump.Because volumetric efficiency improves, can make oil pump under less discharge capacity, reach the working effect of larger displacement oil pump, reduce oil consumption;
2, the utility model, due to the positioning precision having improved between internal rotor and the pump housing, reduces oil pump noise.
Accompanying drawing explanation
The indefiniteness embodiment that device of the present utility model can provide by accompanying drawing further illustrates.
Fig. 1 is oil pump assy structural representation of the present utility model;
Fig. 2 is the sectional view of the utility model oil pump;
Fig. 3 is the plan view of the utility model oil pump;
In figure: the 1-pump housing, 2-internal rotor, 3-external rotor, 4-boss, 5-axle sleeve, 7-lining.
Embodiment
Below in conjunction with accompanying drawing, be described further.
Embodiment 1:
As shown in Figure 2: a kind of oil pump for automatic transmission of automobile, comprises the pump housing 1, pump cover, internal rotor 2 and external rotor 3; Described external rotor 3 is arranged in the housing on the pump housing 1, and described internal rotor 2 is arranged on external rotor 3 inside, in the bottom of the described pump housing 1, is provided with cylindrical boss 4, on this boss 4, is equipped with axle sleeve 5; The middle part of described internal rotor 2 has annular slotted hole, is equipped with lining 7 on this annular slotted hole; When internal rotor 2 is arranged on external rotor 3 inside, the lining 7 that described axle sleeve 5 is positioned at internal rotor 2 forms Spielpassung with lining 7.Between above-mentioned axle sleeve 5 and boss 4, be interference fit between lining 7 and annular slotted hole.
Embodiment 2:
Referring to accompanying drawing: a kind of oil pump for automatic transmission of automobile, comprises the pump housing 1, pump cover, internal rotor 2 and external rotor 3; Described external rotor 3 is arranged in the housing on the pump housing 1, and described internal rotor 2 is arranged on external rotor 3 inside, is provided with the cylindrical boss 4 of hollow in the bottom of the described pump housing 1, in this boss 4, is equipped with axle sleeve 5; The middle part of described internal rotor 2 has annular slotted hole, is equipped with lining 7 on this annular slotted hole; When internal rotor 2 is arranged on external rotor 3 inside, the lining 7 that described axle sleeve 5 is positioned at internal rotor 2 forms Spielpassung with lining 7.Between above-mentioned axle sleeve 5 and boss 4, be interference fit between lining 7 and annular slotted hole.
Oil pump for automatic transmission of automobile of the present utility model, by being connected between lining and axle sleeve, having improved the positioning precision of internal rotor and the pump housing, thereby has improved in the running the volumetric efficiency of oil pump, reduces oil consumption, reduces noise.
Claims (5)
1. an oil pump for automatic transmission of automobile, comprises the pump housing (1), pump cover, internal rotor (2) and external rotor (3); Described external rotor (3) is arranged in the housing on the pump housing (1), and described internal rotor (2) is arranged on external rotor (3) inside, it is characterized in that:
In the bottom of the described pump housing (1), be provided with boss (4), on this boss (4), be equipped with axle sleeve (5); The middle part of described internal rotor (2) has annular slotted hole, is equipped with lining (7) on this annular slotted hole; When internal rotor (2) is arranged on external rotor (3) inside, the lining (7) that described axle sleeve (5) is positioned at internal rotor (2) forms Spielpassung with lining (7).
2. oil pump for automatic transmission of automobile according to claim 1, is characterized in that: the bottom of the described pump housing (1) is provided with cylindrical boss (4), and axle sleeve (5) is assemblied on this boss (4).
3. oil pump for automatic transmission of automobile according to claim 1, is characterized in that: the bottom of the described pump housing (1) is provided with the cylindrical boss (4) of hollow, and axle sleeve (5) is assemblied in this boss (4).
4. according to arbitrary described oil pump for automatic transmission of automobile in claim 1-3, it is characterized in that: described axle sleeve (5) is interference fit with boss (4).
5. oil pump for automatic transmission of automobile according to claim 1, is characterized in that: described lining (7) is interference fit with annular slotted hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320483809.5U CN203453050U (en) | 2013-08-09 | 2013-08-09 | Automatic transmission oil pump for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320483809.5U CN203453050U (en) | 2013-08-09 | 2013-08-09 | Automatic transmission oil pump for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453050U true CN203453050U (en) | 2014-02-26 |
Family
ID=50132932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320483809.5U Expired - Lifetime CN203453050U (en) | 2013-08-09 | 2013-08-09 | Automatic transmission oil pump for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246953A (en) * | 2015-06-15 | 2016-12-21 | 现代自动车株式会社 | Valve for vehicle |
-
2013
- 2013-08-09 CN CN201320483809.5U patent/CN203453050U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246953A (en) * | 2015-06-15 | 2016-12-21 | 现代自动车株式会社 | Valve for vehicle |
| US10190453B2 (en) | 2015-06-15 | 2019-01-29 | Hyundai Motor Company | Valve for vehicle transmission oil cooler bypass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |