CN2886133Y - Internal rotor of lubricating pump - Google Patents
Internal rotor of lubricating pump Download PDFInfo
- Publication number
- CN2886133Y CN2886133Y CN 200620101886 CN200620101886U CN2886133Y CN 2886133 Y CN2886133 Y CN 2886133Y CN 200620101886 CN200620101886 CN 200620101886 CN 200620101886 U CN200620101886 U CN 200620101886U CN 2886133 Y CN2886133 Y CN 2886133Y
- Authority
- CN
- China
- Prior art keywords
- internal rotor
- main shaft
- rotors
- oil pump
- interior
- 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.)
- Expired - Fee Related
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to an important component in an engine oil pump, in particular to rotors in the engine oil pump, wherein a host axis (1) and interior rotors (2) are fixedly connected on the basis of original interior rotors by adopting cool pressure interference fit fixation connection. The circle surface of the terminal of the host axis (1) and the interior rotors (2) is equipped with straight lines knurling, and the terminal of the host axis with straight lines knurling is provided with reverse angles, thereby greatly promoting the reliability of the connection of the interior rotors (2) and the host axis (1), completely eliminating the slide phenomenon of the prior interior rotors (2) and the host axis (1), changing the situation of noise increasing caused by the pin connection conformation and high cost caused by to many processing procedures, and prolonging the service life of the engine pump with continuant operation under high temperatures.
Description
Technical field
The utility model relates to the vitals in the oil pump, particularly the oil pump internal rotor.
Background technique
Oil pump internal rotor in the past, itself and main shaft be connected with 2 kinds of structures: the one, optical axis hot pressing makes main shaft and internal rotor close-fitting, reaches to be fastenedly connected, prior must the heating internal rotor, internal rotor center hole expanded by heating is enlarged, then main shaft is compressed into, just main shaft is tightly embraced after cooling, but because oil pump is successively to operate at the condition of high temperature, thereby make internal rotor center hole expanded by heating again, cause main shaft in the internal rotor center hole, to skid, lose the effect of pump; The 2nd, adopt pin to be located by connecting at main shaft and internal rotor connecting part, all must slot on main shaft and the internal rotor center hole like this, manufacturing procedure increases, precision also requires height, thereby increased cost, owing to the wearing and tearing of pin, main shaft has been swung in the internal rotor center hole after the long-term operation, produce bigger noise, also influence oil pump performance.
The model utility content
The purpose of this utility model is at above-mentioned defective, and a kind of novel oil pump internal rotor is provided.
The technical solution of the utility model is the oil pump internal rotor, comprises main shaft (1), internal rotor (2), and main shaft (1) and internal rotor (2) are fastenedly connected, and it is characterized in that it is that the interference fit of colding pressing is fastenedly connected that said main shaft (1) and internal rotor (2) are fastenedly connected.
Said main shaft (1) is gone up and this end of internal rotor (2) connecting part, and its circumferential surface is provided with straight knurling, and main shaft (1) is gone up this end face of straight knurling chamfering.
The utility model has the advantages that because this end of main shaft (1) and internal rotor (2) connecting part adopt the interference fit of colding pressing to be fastenedly connected, especially main shaft (1) is gone up and internal rotor (2) connecting part its circumferential surface of this end is provided with straight knurling, its diameter is bigger slightly than internal rotor (2) center-hole diameter, the interference fit of colding pressing closely cooperates internal rotor (2) center hole and main shaft (1), thereby improved the reliability that connects greatly, and reduced manufacturing procedure, saved cost.
Description of drawings
Fig. 1 is the utility model structural drawing.
Fig. 2 is main shaft (a 1) structural drawing.
Fig. 3 is the right elevation of Fig. 1.
Embodiment
Further specify embodiment below in conjunction with accompanying drawing.
With reference to Fig. 1 Fig. 2 Fig. 3,1-main shaft, 2-internal rotor.As shown, in order to improve the reliability that main shaft (1) is connected with internal rotor (2), adopt main shaft (1) optical axis and internal rotor (2) hot pressing close-fitting at the past connection, and at main shaft (1) connecting part and internal rotor (2) center hole fluting, place the structure of pin, make connection reliability poor, oil pump occurs in long-term running continuously that main shaft (1) skids or because the pin wearing and tearing make the defective of noise increase in internal rotor (2) center hole, main shaft (1) connecting part is provided with straight knurling, straight knurling place diameter is bigger slightly than internal rotor (2) center-hole diameter, the employing interference fit of colding pressing is fastenedly connected, and improves the reliability that main shaft (1) is connected with internal rotor (2) greatly.Aim at the location for making to cold pressing smoothly and be convenient to, on main shaft (1), have this end face of straight burr stream flower that chamfering is arranged.Internal rotor (2) adopts high-abrasive material to make, and main shaft (1) is gone up and adopted steel to make.
Claims (2)
1, oil pump internal rotor comprises main shaft (1), internal rotor (2), and main shaft (1) and internal rotor (2) are fastenedly connected, and it is characterized in that it is that the interference fit of colding pressing is fastenedly connected that said main shaft (1) and internal rotor (2) are fastenedly connected.
2, according to the said oil pump internal rotor of claim 1, it is characterized in that last and this end of internal rotor (2) connecting part of said main shaft (1), its circumferential surface is provided with straight knurling, and main shaft (1) is gone up this end face of straight knurling chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101886 CN2886133Y (en) | 2006-03-18 | 2006-03-18 | Internal rotor of lubricating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101886 CN2886133Y (en) | 2006-03-18 | 2006-03-18 | Internal rotor of lubricating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886133Y true CN2886133Y (en) | 2007-04-04 |
Family
ID=37961223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620101886 Expired - Fee Related CN2886133Y (en) | 2006-03-18 | 2006-03-18 | Internal rotor of lubricating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886133Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019041960A1 (en) * | 2017-08-31 | 2019-03-07 | 杭州三花研究院有限公司 | Oil pump |
| CN112564435A (en) * | 2021-02-25 | 2021-03-26 | 海顿直线电机(常州)有限公司 | Automatic assembling method for motor rotor knurling shaft and rotor iron core |
-
2006
- 2006-03-18 CN CN 200620101886 patent/CN2886133Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019041960A1 (en) * | 2017-08-31 | 2019-03-07 | 杭州三花研究院有限公司 | Oil pump |
| CN112564435A (en) * | 2021-02-25 | 2021-03-26 | 海顿直线电机(常州)有限公司 | Automatic assembling method for motor rotor knurling shaft and rotor iron core |
| CN112564435B (en) * | 2021-02-25 | 2021-06-08 | 海顿直线电机(常州)有限公司 | Automatic assembling method for motor rotor knurling shaft and rotor iron core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070404 Termination date: 20150318 |
|
| EXPY | Termination of patent right or utility model |