CN204403753U - A kind of novel oil pump external rotor - Google Patents
A kind of novel oil pump external rotor Download PDFInfo
- Publication number
- CN204403753U CN204403753U CN201420830784.6U CN201420830784U CN204403753U CN 204403753 U CN204403753 U CN 204403753U CN 201420830784 U CN201420830784 U CN 201420830784U CN 204403753 U CN204403753 U CN 204403753U
- Authority
- CN
- China
- Prior art keywords
- external rotor
- oil pump
- tooth
- rotor
- utility
- 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
The utility model discloses a kind of novel oil pump external rotor, comprise external rotor body, the inner peripheral surface of described novel external rotor body is distributed with several serrate slots be meshed with the tooth on internal rotor equably, form arc convex between adjacent serrate slot, arc convex one end face between described adjacent serrate slot is provided with that 0.3mm is dark, diameter is the counterbore of 3mm.Compared with prior art, external rotor of the present utility model and internal rotor tooth are under the condition keeping certain throw of eccentric, run by the conjugate curve of the circle-arc tooth of fixed ratio geared motion, operationally the back lash mobility is little to make internal rotor, improve the working efficiency of oil pump, reduce the kinetic equation loss of oil pump, extend the working life of inner and outer rotors.
Description
Technical field
The utility model relates to oil pump component technical field, particularly a kind of novel oil pump external rotor.
Background technique
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.
At present because the throw of eccentric between existing inside and outside rotor in oil pump and tooth curve deposit deficiency in design, operationally the back lash mobility is large to make inner and outer rotors, and cause oil pump inefficiency, kinetic equation loss is large, and produce noise, even cause inner and outer rotors damaged.
Summary of the invention
The purpose of this utility model to provide a kind of novel oil pump external rotor.
For achieving the above object, the utility model is implemented according to following technological scheme:
A kind of novel oil pump external rotor, comprise external rotor body, the inner peripheral surface of described novel external rotor body is distributed with several serrate slots be meshed with the tooth on internal rotor equably, form arc convex between adjacent serrate slot, arc convex one end face between described adjacent serrate slot is provided with that 0.3mm is dark, diameter is the counterbore of 3mm.
As further preferred version of the present utility model, the distance in the axle center of described counterbore and the axle center of external rotor body is 38.8mm.
As further preferred version of the present utility model, described serrate slot is set to 10.
Compared with prior art, external rotor of the present utility model and internal rotor tooth are under the condition keeping certain throw of eccentric, run by the conjugate curve of the circle-arc tooth of fixed ratio geared motion, operationally the back lash mobility is little to make internal rotor, improve the working efficiency of oil pump, reduce the kinetic equation loss of oil pump, extend 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.
A kind of novel oil pump external rotor as shown in Figure 1 and Figure 2, comprise external rotor body 1, the inner peripheral surface of external rotor body 1 is distributed with equably 10 serrate slots 2 be meshed with the tooth on internal rotor, arc convex is formed between adjacent serrate slot 2, arc convex one end face between adjacent serrate slot 2 is provided with the counterbore 3 that 0.3mm is dark, diameter is 3mm, and the distance in the axle center of counterbore 3 and the axle center of external rotor body 1 is 38.8mm.
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. a novel oil pump external rotor, comprise external rotor body (1), the inner peripheral surface of described external rotor body (1) is distributed with equably several serrate slots (2) be meshed with the tooth on internal rotor, form arc convex between adjacent serrate slot (2), it is characterized in that: arc convex one end face between described adjacent serrate slot (2) is provided with the counterbore (3) that 0.3mm is dark, diameter is 3mm.
2. novel oil pump external rotor according to claim 1, is characterized in that: the distance in the axle center of described counterbore (3) and the axle center of external rotor body (1) is 38.8mm.
3. novel oil pump external rotor according to claim 1, is characterized in that: described serrate slot (2) is set to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830784.6U CN204403753U (en) | 2014-12-25 | 2014-12-25 | A kind of novel oil pump external rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830784.6U CN204403753U (en) | 2014-12-25 | 2014-12-25 | A kind of novel oil pump external rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204403753U true CN204403753U (en) | 2015-06-17 |
Family
ID=53427609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420830784.6U Expired - Fee Related CN204403753U (en) | 2014-12-25 | 2014-12-25 | A kind of novel oil pump external rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204403753U (en) |
-
2014
- 2014-12-25 CN CN201420830784.6U patent/CN204403753U/en not_active Expired - Fee Related
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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: 20151225 |
|
| EXPY | Termination of patent right or utility model |