CN204200663U - A kind of oil pump shaft coupling - Google Patents
A kind of oil pump shaft coupling Download PDFInfo
- Publication number
- CN204200663U CN204200663U CN201420618837.8U CN201420618837U CN204200663U CN 204200663 U CN204200663 U CN 204200663U CN 201420618837 U CN201420618837 U CN 201420618837U CN 204200663 U CN204200663 U CN 204200663U
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- CN
- China
- Prior art keywords
- power transmission
- locating cylinder
- pump rotor
- positioning hole
- cylindrical
- Prior art date
- 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.)
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Abstract
The utility model relates to a kind of oil pump shaft coupling, is provided with locating cylinder and power transmission cylindrical body, and the external diameter Φ E of locating cylinder is greater than power transmission cylindrical external diameter Φ F, the endoporus interference fit of locating cylinder and pump rotor; The cylindrical periphery of power transmission is arranged with the projection of two transmitting torques, the groove match of projection and pump rotor; The heart of locating cylinder is provided with flat hole, and flat hole is done power transmission with the plat part of machine shaft and coordinated; The cylindrical heart of power transmission is provided with positioning hole, and the cylindrical portion of positioning hole and machine shaft does location fit.The beneficial effects of the utility model are: shaft coupling entirety of the present utility model is placed in pump rotor, therefore, have the advantage of compact structure.In addition, because the utility model and the positioning hole of machine shaft location fit are arranged on the external diameter power transmission cylindrical body less than locating cylinder, therefore, the endoporus interference fit of locating cylinder and pump rotor can not affect the size of positioning hole, so the matching gap of machine shaft and positioning hole is constant, ensure pump rotor smooth rotation.
Description
Technical field
The utility model relates to a kind of component of oil pump, particularly relates to a kind of oil pump shaft coupling.
Background technique
As shown in Figure 1, for the rotor 1 of the oil pump of prior art to drive the usual structure of pump rotor 3 by shaft coupling 2, shaft coupling 2 is arranged between rotor 1 and pump rotor 3, occupy certain space, and shaft coupling 2 and easily there is the bad phenomenon of quality of fit between pump rotor 3 and machine shaft 4, sometimes there is pump rotor 3 and to operate unstable shortcoming.
Model utility content
The purpose of this utility model overcomes the deficiencies in the prior art, provides the oil pump shaft coupling of a kind of compact structure, smooth running.
To achieve these goals, technical solution of the present utility model is such: a kind of oil pump shaft coupling, be provided with locating cylinder and power transmission cylindrical body, the external diameter Φ E of described locating cylinder is greater than described power transmission cylindrical external diameter Φ F, the endoporus interference fit of described locating cylinder and pump rotor; The cylindrical periphery of described power transmission is arranged with the projection of two transmitting torques, described projection and the groove match of pump rotor; The heart of described locating cylinder is provided with flat hole, and described flat hole is done power transmission with the plat part of machine shaft and coordinated; The cylindrical heart of described power transmission is provided with positioning hole, and described positioning hole and the cylindrical portion of machine shaft do location fit.
The beneficial effects of the utility model are: shaft coupling entirety of the present utility model is placed in pump rotor, therefore, have the advantage of compact structure.In addition, because the utility model and the positioning hole of machine shaft location fit are arranged on the external diameter power transmission cylindrical body less than locating cylinder, therefore, the endoporus interference fit of locating cylinder and pump rotor can not affect the size of positioning hole, so the matching gap of machine shaft and positioning hole is constant, ensure pump rotor smooth rotation.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of prior art;
Fig. 2 is assembling schematic diagram of the present utility model;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the right elevation of Fig. 3;
Fig. 5 is the left view of Fig. 3;
Fig. 6 is the A-A sectional view of Fig. 4;
Fig. 7 is structural perspective of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As illustrated in figs. 2-7, a kind of oil pump shaft coupling, is provided with locating cylinder 5 and power transmission cylindrical body 6, and the external diameter Φ E of described locating cylinder 5 is greater than the external diameter Φ F of described power transmission cylindrical body 6, described locating cylinder 5 and the endoporus interference fit of pump rotor 7; The periphery of described power transmission cylindrical body 6 is arranged with the projection 8 of two transmitting torques, described projection 8 and the groove match of pump rotor 7; The heart of described locating cylinder 5 is provided with flat hole 9, and described flat hole 9 is done power transmission with the plat part 10 of machine shaft and coordinated; The heart of described power transmission cylindrical body 6 is provided with positioning hole 11, and described positioning hole 11 does location fit with the cylindrical portion 12 of machine shaft.
The internal diameter Φ D in described flat hole 9 is greater than the cylindrical portion 12 of machine shaft and the external diameter Φ C of plat part 10.The benefit of such structure is that flat hole 9 can not by the impact of locating cylinder 5 with the endoporus interference fit of pump rotor 7 with plat part 10 assembly precision of machine shaft.
Claims (2)
1. an oil pump shaft coupling, is characterized in that: be provided with locating cylinder and power transmission cylindrical body, and the external diameter Ф E of described locating cylinder is greater than described power transmission cylindrical external diameter Ф F, the endoporus interference fit of described locating cylinder and pump rotor; The cylindrical periphery of described power transmission is arranged with the projection of two transmitting torques, described projection and the groove match of pump rotor; The heart of described locating cylinder is provided with flat hole, and described flat hole is done power transmission with the plat part of machine shaft and coordinated; The cylindrical heart of described power transmission is provided with positioning hole, and described positioning hole and the cylindrical portion of machine shaft do location fit.
2. a kind of oil pump shaft coupling according to claim 1, is characterized in that: the internal diameter Ф D in described flat hole is greater than the cylindrical portion of machine shaft and the external diameter Ф C of plat part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618837.8U CN204200663U (en) | 2014-10-17 | 2014-10-17 | A kind of oil pump shaft coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618837.8U CN204200663U (en) | 2014-10-17 | 2014-10-17 | A kind of oil pump shaft coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200663U true CN204200663U (en) | 2015-03-11 |
Family
ID=52658627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420618837.8U Active CN204200663U (en) | 2014-10-17 | 2014-10-17 | A kind of oil pump shaft coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782112A (en) * | 2016-04-20 | 2016-07-20 | 天佑电器（苏州）有限公司 | Fan blade positioning structure and blowing and sucking machine using same |
-
2014
- 2014-10-17 CN CN201420618837.8U patent/CN204200663U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782112A (en) * | 2016-04-20 | 2016-07-20 | 天佑电器（苏州）有限公司 | Fan blade positioning structure and blowing and sucking machine using same |
| CN105782112B (en) * | 2016-04-20 | 2018-09-18 | 天佑电器（苏州）有限公司 | A kind of fan blade location structure and the blower using the structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |