CN221074613U - Press-in type pump head structure - Google Patents
Press-in type pump head structure Download PDFInfo
- Publication number
- CN221074613U CN221074613U CN202322649922.2U CN202322649922U CN221074613U CN 221074613 U CN221074613 U CN 221074613U CN 202322649922 U CN202322649922 U CN 202322649922U CN 221074613 U CN221074613 U CN 221074613U
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- China
- Prior art keywords
- pump
- pump cover
- oil
- installation cavity
- pump head
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- 238000009434 installation Methods 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005461 lubrication Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 40
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to the technical field of vehicle-mounted oil pumps. The utility model provides a push-in pump head structure, includes the oil pump shell, has seted up the installation cavity in the oil pump shell, is equipped with the external rotor in the installation cavity, and the internal rotor is equipped with to the internal eccentric of external rotor, and installation cavity top is equipped with the pump cover, and the pump cover is interference fit with the installation cavity, and one side is equipped with into oil pipe on the pump cover, and the pump cover opposite side is equipped with out oil pipe. The invention provides the press-in pump head structure which can flexibly adjust the assembly depth of the pump head according to the size deviation, has better lubrication effect, can effectively reduce the volume of an oil pump, can reduce the cost to a certain extent and increases the yield; the mounting method solves the technical problems that in the prior art, the mounting mode of the oil pump head is single, the mounting clearance cannot be adjusted according to the size deviation of parts, the sizes of the pump head and the inner and outer rotors are required to be strictly controlled, and the cost is greatly increased.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted oil pumps, in particular to a press-in type pump head structure.
Background
Automobiles have become one of the most preferred transportation tools in modern society. The automobile industry rapidly develops, and as automobile performance develops towards safer, more reliable, more stable, environment-friendly and energy-saving directions, a perfect executing mechanism needs to be equipped for ensuring the stable operation of an automobile power assembly, so that various actuators with motors are used on the automobile power assembly in a large number, including hydraulic actuators, gear selecting and shifting actuators, brake assistance and the like.
In order to ensure the cooling and lubrication of all parts of the engine, an electronic oil pump is needed to provide power for oil circulation, the electronic oil pump is powered by an internal motor to drive an impeller (an inner rotor and an outer rotor) to drive the oil circulation so as to cool and lubricate related parts, and in order to ensure the lubrication and cooling effects, the efficiency and the control accuracy must be improved. The traditional inner rotor and the outer rotor are fixed on the shell by utilizing the bolts after the processing is finished, so that the processing precision requirement on the product is high, and the size deviation of the product has great influence on the flow of the oil pump because the mode of the bolt fixing cannot be flexibly adjusted, if the deviation is required to be reduced, the tolerance range requirement on the size of the product is very high, a large number of defective products can be produced, the product cost is increased, and the improvement is necessary.
Disclosure of Invention
The invention provides the press-in pump head structure which can flexibly adjust the assembly depth of the pump head according to the size deviation, has better lubrication effect, can effectively reduce the volume of an oil pump, can reduce the cost to a certain extent and increases the yield; the mounting method solves the technical problems that in the prior art, the mounting mode of the oil pump head is single, the mounting clearance cannot be adjusted according to the size deviation of parts, the sizes of the pump head and the inner and outer rotors are required to be strictly controlled, and the cost is greatly increased.
The technical problems of the utility model are solved by the following technical scheme: the utility model provides a push-in pump head structure, includes the oil pump shell, the oil pump shell in set up the installation cavity, be equipped with the external rotor in the installation cavity, the internal eccentric inner rotor that is equipped with of external rotor, the installation cavity top is equipped with the pump cover, pump cover and installation cavity are interference fit, one side is equipped with the oil feed pipe on the pump cover, the pump cover opposite side is equipped with out oil pipe. The utility model relates to a pump cover, which comprises an oil inlet pipe and an oil outlet pipe, wherein the oil inlet pipe and the oil outlet pipe are arranged on the pump cover in an injection molding way, during installation, an inner rotor and an outer rotor are firstly assembled at the bottom of an installation cavity of the oil pump housing, then the pump cover is installed, the pump cover is pressed into the installation cavity through interference fit, the actual assembly height of the inner rotor and the outer rotor and the height of the pump cover are firstly measured before the pump cover is pressed into the pump cover through a press, then data are input into the press, the press-fit depth of the pump cover is calculated according to the required reserved installation gap, finally the pump cover is pressed into the installation cavity to finish the assembly, the pump cover is fixed on the surface of the oil pump housing through screws, only the pump cover can be fastened on the surface of the oil pump housing, the deviation cannot be adjusted according to the size, if the gap is required to be ensured, the sizes of a pump head and the inner rotor and the outer rotor are strictly controlled, the cost can be greatly increased.
Preferably, the diameter of the installation cavity is smaller than the maximum diameter of the bottom of the pump cover. Because the firm installation of pump cover is to be guaranteed, so the diameter that needs the installation cavity is less than the maximum diameter of pump cover bottom installation position, pump cover and installation cavity interference fit just can guarantee that the pump cover is impressed firmly and can guarantee sealedly to a certain extent.
Preferably, an installation gap is reserved between the pump cover and the outer rotor. The installation clearance is reserved between the pump cover and the outer rotor when the pump cover is installed and is used for circulating oil, the pump cover is fastened on the surface of the oil pump shell through bolts in the traditional installation mode of the pump cover, because the size deviation is difficult to control the installation clearance between the pump cover and the outer rotor, if the installation clearance is too large, the flow of the oil is difficult to control, and if the installation clearance is too small, the outer rotor is easy to wear with the pump cover.
Preferably, the pump cover comprises a circulation cavity and a mounting ring, and a sealing ring is embedded at the outer side of the mounting ring. The pump cover comprises the circulation chamber at top and the collar of bottom, and the collar interference fit at pump cover bottom is impressed into the installation cavity in, and the sealing washer effect of inlaying the installation in the collar outside is guaranteed to seal between oil pump shell and the pump cover, avoids fluid to reveal away from between pump cover and the installation cavity, also can adopt laser welding's mode to weld the pump cover firmly in the installation cavity.
Preferably, the surface of the mounting ring is integrally formed with a plurality of positioning protrusions, and the oil pump housing is provided with positioning grooves correspondingly matched with the positioning protrusions. The positioning bulge is integrally injection molded on the mounting ring, and the positioning bulge is matched with a positioning groove formed in the oil pump shell to realize mounting and positioning.
Therefore, the press-in pump head structure of the invention has the following advantages: need not the bolt and decides the part and fix, impress the pump cover through interference fit, can adjust the assembly degree of depth when the pump cover is impressed in a flexible way according to the size deviation, lubrication effect is better, and fluid Liu Liang in the oil pump can reach fine control, can also effectively reduce the oil pump volume, can reduce cost to a certain extent, increases the yields.
Drawings
Fig. 1 is a schematic perspective view of a press-in pump head structure according to the present utility model.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a schematic cross-sectional front view of fig. 1.
Fig. 4 is a schematic perspective view of the oil pump housing of fig. 1.
In the figure, an oil pump housing 1, a mounting cavity 2, an outer rotor 3, an inner rotor 4, a pump cover 5, a mounting gap 6, a circulation cavity 7, a mounting ring 8, an oil inlet pipe 9, an oil outlet pipe 10, a sealing ring 11, a positioning protrusion 12 and a positioning groove 13.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Examples:
As shown in fig. 1, 2, 3 and 4, a press-in pump head structure comprises an oil pump housing 1, wherein an installation cavity 2 is formed in the top of the oil pump housing 1, an outer rotor 3 is installed in the installation cavity 2, and an inner rotor 4 is eccentrically installed in the outer rotor 3.
The top of the installation cavity 2 of the oil pump shell 1 is embedded with a pump cover 5, the pump cover 5 and the installation cavity are in interference fit, and the diameter of the installation cavity 2 is smaller than the maximum diameter of the bottom of the pump cover 5.
An installation gap 6 is left between the pump cover 5 and the outer rotor 3.
The pump cover 5 comprises a circulation cavity 7 at the top and a mounting ring 8 at the bottom, an oil inlet pipe 9 is integrally formed on one side of the outer wall of the circulation cavity 7, and an oil outlet pipe 10 is integrally formed on the outer wall of the other side of the circulation cavity 7.
The outside of the mounting ring 8 is embedded with a sealing ring 11, the side wall of the mounting ring 8 is integrally formed with a positioning bulge 12, and the oil pump housing 1 is provided with a positioning groove 13 corresponding to the positioning bulge 12.
During installation, the inner rotor 4 and the outer rotor 3 are assembled at the bottom of the installation cavity 2 of the oil pump shell 1, then the pump cover 5 is installed, the pump cover 5 is pressed into the installation cavity 2 through interference fit, the pump cover 5 is pressed in through a press, the actual assembly height of the inner rotor 4 and the outer rotor 3 and the height of the pump cover 5 are measured before the pump cover 5 is pressed in, then data are input into the press, the press-fitting depth of the pump cover 5 is calculated according to the installation gap 6 which is needed to be reserved, finally the pump cover 5 is pressed into the installation cavity 2 to complete the assembly, the pump cover 5 is pressed into the oil pump shell 1 through interference fit, the oil pump volume can be effectively reduced, and meanwhile, the cost can be reduced to a certain extent without fixing parts such as screws.
The positioning protrusion 12 on the pump cover 5 is correspondingly blocked into the positioning groove 13 on the oil pump shell 1 to assist positioning during installation.
Claims (5)
1. A push-in pump head structure which is characterized in that: the oil pump comprises an oil pump shell, wherein an installation cavity is formed in the oil pump shell, an outer rotor is arranged in the installation cavity, an inner rotor is eccentrically arranged in the outer rotor, a pump cover is arranged at the top of the installation cavity, the pump cover and the installation cavity are in interference fit, an oil inlet pipe is arranged on one side of the pump cover, and an oil outlet pipe is arranged on the other side of the pump cover.
2. A push-in pump head structure according to claim 1, characterized in that: the diameter of the installation cavity is smaller than the maximum diameter of the bottom of the pump cover.
3. A push-in pump head structure according to claim 1, characterized in that: and a mounting gap is reserved between the pump cover and the outer rotor.
4. A push-in pump head structure according to claim 3, wherein: the pump cover comprises a circulation cavity and a mounting ring, and a sealing ring is embedded at the outer side of the mounting ring.
5. The push-in pump head structure of claim 4, wherein: the mounting ring surface integrated into one piece have a plurality of location arch, set up on the oil pump shell with location protruding corresponding complex constant head tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322649922.2U CN221074613U (en) | 2023-09-28 | 2023-09-28 | Press-in type pump head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322649922.2U CN221074613U (en) | 2023-09-28 | 2023-09-28 | Press-in type pump head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074613U true CN221074613U (en) | 2024-06-04 |
Family
ID=91261399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322649922.2U Active CN221074613U (en) | 2023-09-28 | 2023-09-28 | Press-in type pump head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074613U (en) |
-
2023
- 2023-09-28 CN CN202322649922.2U patent/CN221074613U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |