CN204403751U - The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy - Google Patents
The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy Download PDFInfo
- Publication number
- CN204403751U CN204403751U CN201420825169.6U CN201420825169U CN204403751U CN 204403751 U CN204403751 U CN 204403751U CN 201420825169 U CN201420825169 U CN 201420825169U CN 204403751 U CN204403751 U CN 204403751U
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- CN
- China
- Prior art keywords
- internal rotor
- denticle
- flat key
- powder metallurgy
- double wedge
- 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 discloses the multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy, comprise denticle, double wedge is provided with outside described denticle, inner concave arc surface is formed between described adjacent double wedge, be provided with axis hole in the middle part of described denticle, be provided with through axial flat key at shaft hole inner wall, between described flat key two side bottom and shaft hole inner wall, be provided with through axial notch, the thickness of described denticle is 9.45-9.48mm, and one end distance axis hole outer rim of described flat key is 1.5mm.Compared with prior art, the utility model makes internal rotor, and operationally the back lash mobility is little, improves the working efficiency of oil pump, reduces the kinetic equation loss of oil pump, extends the working life of inner and outer rotors.
Description
Technical field
The utility model relates to internal rotor technical field, particularly the multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy.
Background technique
The oil pump cycloid inner and outer rotors adopting powdered metallurgical material to produce is widely used in recent years, and what particularly use on automobile, motorcycle is more general.
Oil pump is used to make engine oil pressure raise and ensure certain oil mass, and force the component of fuel feeding to each friction surface, wherein the most frequently used is rotor engine oil pump.The rotor engine oil pump used at present, comprise oil pump casing, oil pump cover, oil sealing and interior, external rotor, internal rotor initiatively and driven external rotor are all contained in oil pump casing, the perisporium of internal rotor is provided with outer double wedge, the inwall of external rotor is provided with interior double wedge, many one of the number of teeth of the outer double wedge of the gear ratio internal rotor of the interior double wedge of external rotor, fit depressions between the outer double wedge of internal rotor and the interior double wedge of external rotor, make to be linear contact between the flank of tooth, in, just multiple active chamber is defined between the external rotor gear teeth, internal rotor central shaft hole is fixed on driving shaft, when driving the rotating in same direction of external rotor by internal rotor, rotating speed due to internal rotor is greater than the rotating speed of external rotor, when engagement thrown off by rotor, volume increases gradually, produce vacuum, suck lubricant oil, be rotated further again, when rotor engages gradually, oil pocket volume reduces gradually, oil is compressed, just lubricant oil is extruded.
The internal rotor used at present, usual employing casting turning forms, during use, live axle to be connected with internal rotor by key, pin or rotor shaft one end is processed into irregular flat and is directly inserted the running driving inner and outer rotors in internal rotor endoporus, but not too reasonable due to its structure, easily cause sealing not good, to such an extent as to oil pump inefficiency, kinetic equation loss is large, and produce noise, the problem such as even cause inner and outer rotors damaged.
Summary of the invention
The purpose of this utility model to provide a kind of powder metallurgy multiple tooth shape internal rotor of lubricating pump.
For achieving the above object, the utility model is implemented according to following technological scheme:
The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy, comprise denticle, double wedge is provided with outside described denticle, inner concave arc surface is formed between described adjacent double wedge, axis hole is provided with in the middle part of described denticle, be provided with through axial flat key at shaft hole inner wall, between described flat key two side bottom and shaft hole inner wall, be provided with through axial notch.
As preferred version of the present utility model, the thickness of described denticle is 9.45-9.48mm, and one end distance axis hole outer rim of described flat key is 1.5mm.
As preferred version of the present utility model, described double wedge is set to 9.
Compared with prior art, the utility model makes internal rotor, and operationally the back lash mobility is little, improves the working efficiency of oil pump, reduces the kinetic equation loss of oil pump, extends the working life of inner and outer rotors.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, is used for explaining the utility model in the illustrative examples of this model utility and explanation, but not as to restriction of the present utility model.
The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy as shown in Figure 1 and Figure 2, comprise denticle 1, double wedge 2 is provided with outside denticle 1, form inner concave arc surface between adjacent double wedge 2, in the middle part of described denticle 1, be provided with axis hole 3, be provided with through axial flat key 4 at axis hole 3 inwall, through axial notch 5 is provided with between flat key 4 liang of side bottoms and axis hole 3 inwall, the thickness of denticle 1 is 9.45-9.48mm, and one end distance axis hole 3 outer rim of flat key 4 is 1.5mm, and double wedge 2 is set to 9.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion made according to the technical solution of the utility model, all falls within protection domain of the present utility model.
Claims (3)
1. the multiple tooth shape internal rotor of lubricating pump of powder metallurgy, comprise denticle (1), double wedge (2) is provided with outside described denticle (1), it is characterized in that: between described adjacent double wedge (2), form inner concave arc surface, described denticle (1) middle part is provided with axis hole (3), be provided with through axial flat key (4) at axis hole (3) inwall, between described flat key (4) two side bottom and axis hole (3) inwall, be provided with through axial notch (5).
2. the multiple tooth shape internal rotor of lubricating pump of powder metallurgy according to claim 1, is characterized in that: the thickness of described denticle (1) is 9.45-9.48mm, and one end distance axis hole (3) outer rim of described flat key (4) is 1.5mm.
3. the multiple tooth shape internal rotor of lubricating pump of powder metallurgy according to claim 1, is characterized in that: described double wedge (2) is set to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825169.6U CN204403751U (en) | 2014-12-24 | 2014-12-24 | The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825169.6U CN204403751U (en) | 2014-12-24 | 2014-12-24 | The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204403751U true CN204403751U (en) | 2015-06-17 |
Family
ID=53427607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420825169.6U Expired - Fee Related CN204403751U (en) | 2014-12-24 | 2014-12-24 | The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204403751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288286A (en) * | 2018-12-10 | 2020-06-16 | 通用汽车环球科技运作有限责任公司 | Gear assembly |
-
2014
- 2014-12-24 CN CN201420825169.6U patent/CN204403751U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288286A (en) * | 2018-12-10 | 2020-06-16 | 通用汽车环球科技运作有限责任公司 | Gear assembly |
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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: 20150617 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |