CN201448232U - Oil pump with built-in pump cover - Google Patents
Oil pump with built-in pump cover Download PDFInfo
- Publication number
- CN201448232U CN201448232U CN200920046177XU CN200920046177U CN201448232U CN 201448232 U CN201448232 U CN 201448232U CN 200920046177X U CN200920046177X U CN 200920046177XU CN 200920046177 U CN200920046177 U CN 200920046177U CN 201448232 U CN201448232 U CN 201448232U
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- CN
- China
- Prior art keywords
- pump
- capping
- housing
- casing
- oil
- 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 an oil pump with a built-in pump cover, which comprises a casing and a close cover, wherein a pump shaft hole is formed at the middle part of the close cover; an inner cavity is arranged in the casing; an outer rotor and an inner rotor are arranged in the inner cavity; the close cover is embedded in the casing and is in interference fit with the casing; an oil inlet and outlet groove formed on the close cover is communicated with the oil inlet and outlet groove formed on the casing; a pump shaft passing through the pump shaft hole is fixedly connected with the center hole of the inner rotor; and an axial bulge on the inner edge of the end surface of the casing forms a seam allowance. In the utility model, a protruding ring is formed on the inner edge of the end surface of the casing, the side surface of the outer ring of a bearing is attached to the seam allowance at the inner edge of the end surface of the casing, oozed oil infiltrates into the machine body from the inner side of the seam allowance directly and flows back to an oil tank through the bearing hole, and the phenomena of leakage on the exterior and oil drip can not be caused.
Description
Technical field
The utility model designs a kind of oil pump, the built-in embedded oil pump of particularly a kind of pump cover.
Background technique
The patent No. is that 992301246 Chinese utility model patent discloses the built-in embedded oil pump of a kind of pump cover.This oil pump comprises housing, is arranged on external rotor, internal rotor and the corresponding capping of the inner chamber with housing in the housing inner chamber, the centre of capping is provided with the pump shaft hole, pump shaft passes the pump shaft hole and is connected with the internal rotor mesopore, and is fixed with it by a pump shaft pin; This capping is provided with the turnover oil groove and is connected with turnover oil groove on the housing; And this capping is connected with the interference fit that is connected to form of the inner chamber of housing, and gapped between capping and the inside and outside rotor; In capping end face outer rim one prominent ring is arranged, during use, the outer shroud side of bearing closely contacts with the prominent ring of described capping end face outer rim.The utility model has solved the defective of existing oil pump engine oil leakage substantially owing to adopt damascene structures (being that capping embedding people crosses in the housing) and capping is connected with interference fit between the housing; But after the product long-time running, foundry goods fatigue deformation behind frequent rising-heat contracting-cold, cause capping external diameter and oil pump housing junction to produce the gap, machine oil outwards oozes out under pressure, because of the prominent ring of pump cover end face outer rim closely contacts with the outer shroud side of bearing,, can't enter in the body so the machine oil that oozes out is blocked, the pressure oil that oozes out forms the oil dripping phenomenon from the outside seepage of screw.
The model utility content
The technical problems to be solved in the utility model is at above-mentioned the deficiencies in the prior art, and a kind of good seal performance is provided, and effectively solves the built-in embedded oil pump of pump cover of oil dripping phenomenon.
For realizing above-mentioned technical purpose, the technological scheme that the utility model is taked is: the built-in embedded oil pump of a kind of pump cover comprises that housing and middle part are provided with the capping in pump shaft hole; Be provided with inner chamber in the housing, be provided with external rotor and internal rotor in the internal control, capping embed in the capping and with the capping interference fit; Capping is provided with the turnover oil groove and is connected with turnover oil groove on the housing; Pump shaft passes the pump shaft hole and the internal rotor mesopore is fixedly connected; Described housing end face inner edge has an axial projection to form seam.
As the further improved technological scheme of the utility model, in capping, have two axial restraint holes, fastening piece passes fixed hole fixedlys connected capping with housing.
The utility model convexes to form prominent ring at housing end face inner edge, the outer shroud side of bearing touch the seam of housing end face inner edge, when causing pump cover external diameter and oil pump housing junction, the product long-time running produces the gap, thereby when causing oil impregnate, the oil that oozes out is from directly inboard and in bearing hole infiltrates body from seam, flow back to oil sump, can not form seepage and also can not form the oil dripping phenomenon the outside.
Description of drawings
Fig. 1 is a cross-sectional schematic of the present utility model.
Embodiment
Referring to Fig. 1, the built-in embedded oil pump of the utility model pump cover comprises that housing 1 and middle part are provided with the capping 4 in pump shaft hole, is provided with inner chamber in the housing 1, is provided with internal rotor 7 and external rotor 6 in the inner chamber, capping 4 embed in the housings 1 and with housing 1 interference fit; Capping 4 is provided with the turnover oil groove and is connected with turnover oil groove 9 on the housing 1; Housing end face inner edge has an axial projection to form in seam 2. cappings to have two axial restraint holes 3, it is fixedly connected with housing 1 with capping 4 that fastening piece passes fixed hole 3. and pump shaft 5 passes the pump shaft hole and is connected with the mesopore of internal rotor 7 during work, and is fixed by fixed hole on fastening piece and the pump shaft 8 and internal rotor 7.
Claims (2)
1. the built-in embedded oil pump of pump cover comprises that housing and middle part are provided with the capping in pump shaft hole; Be provided with inner chamber and capping chamber in the housing, be provided with external rotor and internal rotor in the internal control, capping embeds in the housing and capping and housing interference fit; Capping is provided with the turnover oil groove and is connected with turnover oil groove on the housing; Pump shaft passes the pump shaft hole and the internal rotor mesopore is fixedly connected; It is characterized in that: described housing end face inner edge has an axial projection to form seam.
2. the built-in embedded oil pump of pump cover according to claim 1 is characterized in that: have two axial restraint holes in capping, fastening piece passes fixed hole fixedlys connected capping with housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920046177XU CN201448232U (en) | 2009-06-18 | 2009-06-18 | Oil pump with built-in pump cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920046177XU CN201448232U (en) | 2009-06-18 | 2009-06-18 | Oil pump with built-in pump cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448232U true CN201448232U (en) | 2010-05-05 |
Family
ID=42552947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920046177XU Expired - Fee Related CN201448232U (en) | 2009-06-18 | 2009-06-18 | Oil pump with built-in pump cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448232U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003385A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Inner pump cover rotor oil pump installed on backside of pump cover |
| CN109931489A (en) * | 2019-04-08 | 2019-06-25 | 湖南机油泵股份有限公司 | A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump |
| CN110159390A (en) * | 2019-06-03 | 2019-08-23 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that can reduce installation deformation |
-
2009
- 2009-06-18 CN CN200920046177XU patent/CN201448232U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003385A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Inner pump cover rotor oil pump installed on backside of pump cover |
| CN109931489A (en) * | 2019-04-08 | 2019-06-25 | 湖南机油泵股份有限公司 | A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump |
| CN110159390A (en) * | 2019-06-03 | 2019-08-23 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that can reduce installation deformation |
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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: 20100505 Termination date: 20170618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |