CN209801130U - Oil pump - Google Patents
Oil pump Download PDFInfo
- Publication number
- CN209801130U CN209801130U CN201920414914.0U CN201920414914U CN209801130U CN 209801130 U CN209801130 U CN 209801130U CN 201920414914 U CN201920414914 U CN 201920414914U CN 209801130 U CN209801130 U CN 209801130U
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- China
- Prior art keywords
- positioning
- pump
- hole
- positioning hole
- pump body
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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 - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses an oil pump, which comprises a pump body, a pump cover, an inner rotor and an outer rotor, wherein an engine body is used as the pump body; the pump body is provided with a cavity for installing the inner rotor and the outer rotor, and the pump body is provided with at least one first positioning hole. The edge of the pump cover is provided with at least one second positioning hole. After the pump cover and the pump body are installed in a matched mode, a positioning bushing is embedded into each first positioning hole and a corresponding second positioning hole, and one half of the positioning bushing is located in the first positioning hole, and the other half of the positioning bushing is located in the second positioning hole; and a positioning pin is inserted into the positioning bushing. The engine body is used as the pump body of the oil pump, so that the installation space and the material are saved. Through setting up positioning sleeve, it is low to have reduced the processing cost, and the pump cover convertibility is strong, and convenient assembling, raises the efficiency, reduces assembly cost.
Description
Technical Field
The utility model belongs to the technical field of the oil pump, concretely relates to oil pump.
Background
Due to the large market demand for light trucks, especially low speed and high load vehicle models, such engines have high quality requirements for oil pumps. Long-term practice proves that in the operation of the engine oil pump, the three factors of pressure, flow and flow rate of lubricating oil at each lubricating part are different from each other in strict meaning, and reliable and reasonable oil supply at each different part is more important.
The oil pump has high assembly precision requirement, positioning holes are formed in the pump cover and the pump body of the traditional oil pump, and then positioning pins are inserted into the corresponding positioning holes to enable the pump cover and the pump body to be installed in a matched mode. However, the positioning pin can be inserted after the corresponding positioning holes of the pump cover and the pump body are coaxially aligned, and the process of coaxially aligning the corresponding positioning holes of the pump cover and the pump body is difficult, time-consuming and inconvenient to assemble. In addition, if the pump cover or pump body is damaged and needs to be replaced, the pump cover or pump body cannot be assembled.
disclosure of Invention
An object of the utility model is to provide an oil pump, solve among the prior art all seted up the locating hole on the pump cover and the pump body, could insert the locating pin after the coaxial alignment of the corresponding locating hole of the pump cover and the pump body, with the in-process of the coaxial alignment of the corresponding locating hole of the pump cover and the pump body, more difficult, time-consuming, the installation is inconvenient, and pump cover or the pump body damage the poor technical problem of replaceability back.
The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme:
An oil pump comprises a pump body, a pump cover, an inner rotor and an outer rotor, wherein an engine body is used as the pump body; the pump body is provided with a cavity for installing the inner rotor and the outer rotor, and the pump body is provided with at least one first positioning hole.
An oil inlet channel and an oil outlet channel are formed in the pump cover; the pump cover edge is provided with at least one second positioning hole, and the number of the first positioning holes is the same as that of the second positioning holes.
After the pump cover and the pump body are installed in a matched mode, a positioning bushing is embedded into each first positioning hole and one corresponding second positioning hole, and one half of the positioning bushing is located in the first positioning hole, and the other half of the positioning bushing is located in the second positioning hole; and a positioning pin is inserted into the positioning bushing.
A through hole is formed in the pump cover, the inner rotor is connected with one end of the rotating shaft through a key, and the other end of the rotating shaft penetrates through the through hole and is located outside the cavity.
The engine body is used as the pump body of the oil pump, so that the installation space and the material are saved.
In the prior art, a positioning bush is not arranged, a positioning pin is directly inserted into a corresponding first positioning hole and a corresponding second positioning hole for positioning assembly, the machining error of the first positioning hole and the second positioning hole cannot exceed one thread, the machining cost is high, if the error is too large, the assembly can be realized through the transitional fit installation of the positioning pin, but the pump cover needs to be replaced if the pump cover is damaged subsequently, and the new pump cover cannot be assembled due to the machining error and the assembly error which exist previously. And in the application, the positioning bush is arranged, the machining precision requirement of the first positioning hole and the second positioning hole can be reduced, the allowable machining error is 3-4 threads, the assembly can be realized through the transitional fit installation of the positioning pin, then the positioning pin is inserted into the first positioning hole and the second positioning hole to realize the positioning, the machining precision of the positioning bush and the positioning pin is only required to meet the requirement, and if the pump cover is damaged later, the positioning bush is replaced simultaneously when the pump cover is replaced, and the new pump cover and the pump body can be assembled.
Through setting up positioning sleeve, it is low to have reduced the processing cost, and the pump cover convertibility is strong, and convenient assembling, raises the efficiency, reduces assembly cost.
In a further improvement, one end of the rotating shaft, which is positioned outside the cavity, is fixedly connected with the transmission gear. The inner rotor is driven to rotate through the rotating gear, the structure is compact, and the transmission efficiency is high.
The improved structure is characterized in that a copper bush is embedded in the through hole and sleeved on the rotating shaft. The copper bush plays a role in sealing and prevents oil leakage.
In a further improvement, the second positioning hole is a stepped hole, and the aperture of the side close to the pump body is smaller. After the pump cover and the pump body are assembled, the positioning bushing is pressed by the step surface of the stepped hole, so that the limiting effect is achieved, and the positioning bushing is prevented from falling off.
in a further improvement, the number of the second positioning holes is two.
Compared with the prior art, the beneficial effects of the utility model are that:
1. The engine body is used as the pump body of the oil pump, so that the installation space and the material are saved.
2. through setting up positioning sleeve, it is low to have reduced the processing cost, and the pump cover convertibility is strong, and convenient assembling, raises the efficiency, reduces assembly cost.
Drawings
Fig. 1 is the structure diagram of the pump cover of the present invention.
Fig. 2 is a schematic view a-a of fig. 1.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will combine the embodiments of the present invention to clearly and completely describe the technical solution of the present invention.
The first embodiment is as follows:
As shown in fig. 1 and 2, an oil pump includes a pump body, a pump cover 4, an inner rotor 6 and an outer rotor 8, and an engine body is used as the pump body; the pump body is provided with a cavity for installing the inner rotor and the outer rotor, and the pump body is provided with two first positioning holes.
an oil inlet channel and an oil outlet channel are formed in the pump cover 4; two second positioning holes 10 are formed in the edge of the pump cover.
after the pump cover 4 is matched with the pump body, a positioning bush 5 is embedded in each first positioning hole and a corresponding second positioning hole 10, and one half of the positioning bush 5 is positioned in the first positioning hole, and the other half of the positioning bush 5 is positioned in the second positioning hole 10; and a positioning pin is inserted into the positioning bushing. The pump cover and the pump body are fastened through bolts 1.
A through hole is formed in the pump cover 4, the inner rotor 6 is connected with one end of the rotating shaft 7 through a key, and the other end of the rotating shaft 7 penetrates through the through hole to be located outside the cavity.
The engine body is used as the pump body of the oil pump, so that the installation space and the material are saved.
in the prior art, a positioning bush is not arranged, a positioning pin is directly inserted into a corresponding first positioning hole and a corresponding second positioning hole for positioning assembly, the machining error of the first positioning hole and the second positioning hole cannot exceed one thread, the machining cost is high, if the error is too large, the assembly can be realized through the transitional fit installation of the positioning pin, but the pump cover needs to be replaced if the pump cover is damaged subsequently, and the new pump cover cannot be assembled due to the machining error and the assembly error which exist previously. And in the application, the positioning bush is arranged, the machining precision requirement of the first positioning hole and the second positioning hole can be reduced, the allowable machining error is 3-4 threads, the assembly can be realized through the transitional fit installation of the positioning pin, then the positioning pin is inserted into the first positioning hole and the second positioning hole to realize the positioning, the machining precision of the positioning bush and the positioning pin is only required to meet the requirement, and if the pump cover is damaged later, the positioning bush is replaced simultaneously when the pump cover is replaced, and the new pump cover and the pump body can be assembled.
Through setting up positioning sleeve, it is low to have reduced the processing cost, and the pump cover convertibility is strong, and convenient assembling, raises the efficiency, reduces assembly cost.
In this embodiment, one end of the rotating shaft 7 located outside the cavity is fixedly connected with the transmission gear 9. The inner rotor is driven to rotate through the rotating gear, the structure is compact, and the transmission efficiency is high.
In this embodiment, the through hole is embedded with a copper bush 3, and the copper bush 3 is sleeved on the rotating shaft 7. The copper bush plays a role in sealing and prevents oil leakage.
In this embodiment, the second positioning hole 10 is a stepped hole, wherein the diameter of the hole is smaller on the side close to the pump body. After the pump cover 4 is assembled with the pump body, the positioning bushing 5 is pressed by the step surface of the stepped hole to play a limiting role and prevent the positioning bushing from falling off.
example two:
An assembly method of an oil pump, comprising the steps of:
1) Embedding the positioning sleeve in a corresponding second positioning hole on the pump cover, wherein one half of the positioning bushing is positioned in the second positioning hole, and the other half of the positioning bushing is exposed;
2) A copper bush is embedded in the through hole of the pump cover, one end of the rotating shaft is fixedly connected with the inner rotor through a key, and the other end of the rotating shaft penetrates through the copper bush and is fixedly connected with the transmission gear;
3) The outer rotor is placed into a cavity of the pump body, then the pump cover together with the inner rotor is installed in a matched mode with the pump body, one half of the exposed portion of the positioning bushing is inserted into the corresponding first positioning hole, then the positioning pin is inserted into the positioning bushing, and the pump cover and the pump body are fastened through the bolts.
What has not been described in detail in the present invention is the prior art or can be realized by the prior art, and the specific embodiment of the present invention is only the preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (5)
1. An oil pump comprises a pump body, a pump cover, an inner rotor and an outer rotor, and is characterized in that an engine body is used as the pump body; the pump body is provided with a cavity for mounting the inner rotor and the outer rotor, and the pump body is provided with at least one first positioning hole;
An oil inlet channel and an oil outlet channel are formed in the pump cover; the edge of the pump cover is provided with at least one second positioning hole, and the number of the first positioning holes is the same as that of the second positioning holes;
After the pump cover and the pump body are installed in a matched mode, a positioning bushing is embedded into each first positioning hole and one corresponding second positioning hole, and one half of the positioning bushing is located in the first positioning hole, and the other half of the positioning bushing is located in the second positioning hole; a positioning pin is inserted into the positioning bushing;
A through hole is formed in the pump cover, the inner rotor is connected with one end of the rotating shaft through a key, and the other end of the rotating shaft penetrates through the through hole and is located outside the cavity.
2. the oil pump of claim 1, wherein one end of the rotating shaft, which is located outside the cavity, is fixedly connected with the transmission gear.
3. the oil pump according to claim 1 or 2, characterized in that a copper bush is embedded in the through hole, and the copper bush is sleeved on the rotating shaft.
4. the oil pump of claim 3, wherein the second positioning hole is a stepped hole, and the diameter of the hole is smaller on the side close to the pump body.
5. The oil pump according to claim 1, wherein the number of the second positioning holes is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920414914.0U CN209801130U (en) | 2019-03-28 | 2019-03-28 | Oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920414914.0U CN209801130U (en) | 2019-03-28 | 2019-03-28 | Oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209801130U true CN209801130U (en) | 2019-12-17 |
Family
ID=68827130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920414914.0U Expired - Fee Related CN209801130U (en) | 2019-03-28 | 2019-03-28 | Oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209801130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882728A (en) * | 2019-03-28 | 2019-06-14 | 南京创新机油泵制造有限公司 | A kind of lubricating oil pump and assembly method |
-
2019
- 2019-03-28 CN CN201920414914.0U patent/CN209801130U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882728A (en) * | 2019-03-28 | 2019-06-14 | 南京创新机油泵制造有限公司 | A kind of lubricating oil pump and assembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |