CN201517500U - Drive shaft and inner rotor structure of rotor type fuel oil pump - Google Patents
Drive shaft and inner rotor structure of rotor type fuel oil pump Download PDFInfo
- Publication number
- CN201517500U CN201517500U CN2009200658985U CN200920065898U CN201517500U CN 201517500 U CN201517500 U CN 201517500U CN 2009200658985 U CN2009200658985 U CN 2009200658985U CN 200920065898 U CN200920065898 U CN 200920065898U CN 201517500 U CN201517500 U CN 201517500U
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- CN
- China
- Prior art keywords
- internal rotor
- transmission shaft
- inner rotor
- drive shaft
- oil pump
- 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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Abstract
A drive shaft and inner rotor structure of a rotor type fuel oil pump, comprises a drive shaft (1) and an inner rotor (2), an inner rotor installed segment for installing the inner rotor (1) is arranged at the middle part of the drive shaft (1), the cross section of the inner rotor installed segment of the drive shaft (1) is flat square, the inner rotor (2) is provided with a flat square shaft hole (21) corresponding to the inner rotor installed segment of the drive shaft (1), the inner rotor (2) is sleeved on the inner rotor installed segment of the drive shaft (1) by an axle hole (21) on the inner rotor (2), the inner rotor installed segment of the drive shaft (1) is in clearance fit with the axle hole (21) of the inner rotor (2). The drive shaft and inner rotor structure has simple structure, easy installation and high volume efficiency, and is safe and reliable.
Description
Technical field
The utility model relates to a kind of fuel of internal combustion engine oil transportation pump structure, particularly a kind of transmission shaft of rotator type fuel oil pump and inner rotor core.
Background technique
At present, the transmission shaft of existing rotor fuel oil pump and the connection part of internal rotor are to adopt circular cooperating structure, so just need between transmission shaft and internal rotor, be provided with the key piece and drive connecting structure, make in the axis hole of internal rotor and have the keyway that is used for the fitting key piece, diminish the intensity of internal rotor, the Accident due to quality because of the stuck oil pump of internal rotor cracking takes place easily.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and transmission shaft and inner rotor core that a kind of rotator type fuel oil pump is provided, its simple in structure, easy installation, safe and reliable, volumetric efficiency is high.
The technical solution of the utility model is: a kind of transmission shaft of rotator type fuel oil pump and inner rotor core, it comprises transmission shaft and internal rotor, the two ends of transmission shaft are installed on respectively in the axis hole of the pump housing of oil pump and pump cover, the middle part of transmission shaft is provided with the internal rotor construction section that is used to install internal rotor, the cross section of the internal rotor construction section of transmission shaft is non-circular, internal rotor is provided with the non-circular axis hole that the internal rotor construction section with transmission shaft adapts, internal rotor is contained in by the shaft hole sleeve on it on internal rotor construction section of transmission shaft, the internal rotor construction section of transmission shaft and the axis hole Spielpassung of internal rotor.
The further technological scheme of the utility model is: the cross section of the internal rotor construction section of transmission shaft is a deltiod, the deltiod that the axis hole of internal rotor adapts for the internal rotor construction section with transmission shaft.
The utility model compared with prior art has following characteristics:
1, the utility model is owing to adopt this drive mechanism of deltiod shape, again with the flat square hole Spielpassung of compression moulding internal rotor, the parallelism error of the coaxality that can cause because of processing, end face run-out, molded lines does not impact assembly precision, stationarity when having guaranteed transmission, symmetrical balance effect when particularly the deltiod internal rotor construction section of transmission shaft is to the deltiod hole impacting start of internal rotor has improved Security, the stability of internal rotor and has reduced the generation of rotor CRACKING ACCIDENT.
2, because Spielpassung is adopted in the deltiod hole of the deltiod internal rotor construction section of transmission shaft and internal rotor, when guaranteeing the oil pump running, the inner and outer rotors molded lines is meshing with each other steadily accurate, thereby reduced noise, improved the volumetric efficiency of oil transfer pump, and further improved the stability of fuel transfer pressure and flow, promote motor to reach the environmental protection purpose that reduces discharging noise reduction.
3, flat square hole is easy to process, but the flat square hole press forming of internal rotor, and the hardness of its flat square hole internal surface, intensity and surface quality are higher, have improved wear resistance, impact resistance, reliability and the working life of internal rotor.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment
Embodiment
As shown in Figure 1: a kind of transmission shaft of rotator type fuel oil pump and inner rotor core, it comprises transmission shaft 1 and internal rotor 2, the two ends of transmission shaft 1 are installed on respectively in the axis hole of the pump housing 3 of oil pump and pump cover 4, the middle part of transmission shaft 1 is provided with the internal rotor construction section that is used to install internal rotor 2, the cross section of the internal rotor construction section of transmission shaft 1 is deltiod (shape of transmission shaft 1 as shown in fig. 1), internal rotor 2 is provided with the deltiod axis hole 21 that the internal rotor construction section with transmission shaft 1 adapts, internal rotor 2 is sleeved on by the axis hole on it 21 on the internal rotor construction section of transmission shaft 1, axis hole 21 Spielpassung of the internal rotor construction section of transmission shaft 1 and internal rotor 2.
The cross section that transmission shaft 1 middle part is used to install the internal rotor construction section of internal rotor 2 also can be other non-circular structure, the axis hole 21 of internal rotor 2 for the internal rotor construction section with transmission shaft 1 adapt non-circular.
The utility model is not limited to above-mentioned concrete structure, and the internal rotor construction section that needs only internal rotor 3 and transmission shaft 1 is that the transmission shaft and the inner rotor core of the rotator type fuel oil pump of non-circular Spielpassung just drops within the protection domain of the present utility model.
Claims (2)
1. the transmission shaft of a rotator type fuel oil pump and inner rotor core, it comprises transmission shaft (1) and internal rotor (2), the two ends of transmission shaft (1) are installed on respectively in the axis hole of the pump housing (3) of oil pump and pump cover (4), the middle part of transmission shaft (1) is provided with the internal rotor construction section that is used to install internal rotor (2), it is characterized in that: the cross section of the internal rotor construction section of transmission shaft (1) is non-circular, internal rotor (2) is provided with the non-circular axis hole (21) that the internal rotor construction section with transmission shaft (1) adapts, internal rotor (2) is sleeved on by the axis hole on it (21) on the internal rotor construction section of transmission shaft (1), axis hole (21) Spielpassung of the internal rotor construction section of transmission shaft (1) and internal rotor (2).
2. the transmission shaft of rotator type fuel oil pump according to claim 1 and inner rotor core, it is characterized in that: the cross section of the internal rotor construction section of described transmission shaft (1) is a deltiod, the deltiod that the axis hole (21) of internal rotor (2) adapts for the internal rotor construction section with transmission shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658985U CN201517500U (en) | 2009-09-12 | 2009-09-12 | Drive shaft and inner rotor structure of rotor type fuel oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200658985U CN201517500U (en) | 2009-09-12 | 2009-09-12 | Drive shaft and inner rotor structure of rotor type fuel oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517500U true CN201517500U (en) | 2010-06-30 |
Family
ID=42498222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200658985U Expired - Fee Related CN201517500U (en) | 2009-09-12 | 2009-09-12 | Drive shaft and inner rotor structure of rotor type fuel oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517500U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895807A (en) * | 2015-06-04 | 2015-09-09 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN105452663A (en) * | 2013-08-09 | 2016-03-30 | 爱信精机株式会社 | Fluid-pump inner rotor |
| CN109424542A (en) * | 2017-08-31 | 2019-03-05 | 杭州三花研究院有限公司 | Electronic oil pump |
-
2009
- 2009-09-12 CN CN2009200658985U patent/CN201517500U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105452663A (en) * | 2013-08-09 | 2016-03-30 | 爱信精机株式会社 | Fluid-pump inner rotor |
| CN104895807A (en) * | 2015-06-04 | 2015-09-09 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN109424542A (en) * | 2017-08-31 | 2019-03-05 | 杭州三花研究院有限公司 | Electronic oil pump |
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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: 20100630 Termination date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |