CN203757350U - Oil pump assembly - Google Patents
Oil pump assembly Download PDFInfo
- Publication number
- CN203757350U CN203757350U CN201420172860.9U CN201420172860U CN203757350U CN 203757350 U CN203757350 U CN 203757350U CN 201420172860 U CN201420172860 U CN 201420172860U CN 203757350 U CN203757350 U CN 203757350U
- Authority
- CN
- China
- Prior art keywords
- main body
- pump
- binding end
- blind hole
- assembly
- 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
Links
Abstract
The utility model provides an oil pump assembly. The oil pump assembly comprises a pump cover and a pump body which are matched and connected with each other; the pump body comprises a main body portion, a combination end and a shaft hole end; the main body portion is in a cylinder shape; the combination end is formed at the inner end of the main body portion; the shaft hole end is formed at the outer end of the main body portion; the inner diameter of the combination end is equal to that of the main body portion; the outer diameter of the combination end is larger than that of the main body portion; the rear end of the combination end is provided with an annular surface which is connected with the outer wall of the main body portion; the annular surface is level with the inner end surface of the pump cover; an concave blind hole is machined at the inner end of the pump cover; the combination end is embedded into the concave blind hole; the combination end and the concave blind hole are in interference fit with each other. According to the oil pump assembly, the sealing effect is good, assembly of the assembly is convenient, the assembly efficiency is improved, and the manufacturing cost is reduced.
Description
Technical field
The utility model relates to a kind of engine oil pump assembly.
Background technique
Between the pump housing of existing engine oil pump assembly and pump cover, be generally end face and coordinate, utilize O-ring seals sealing.Such as the Chinese patent that notification number is CN2641323Y has been announced a kind of " diesel engine oil pump " (patentee: Li Zhimou), on pump cover and on the pump pump housing, be respectively equipped with turnover oil pocket (hole), between the pump housing and pump cover, adopt end face to coordinate, and utilize O shape rubber seal rings for seal.Because O shape rubber seal has elasticity, can overcome because junction plane between pump cover and the pump housing is coarse and planeness is difficult to ensure to cause the problem of seepage, thereby improve oil pump sealability.
In long-term use, finding, still there is following shortcoming in the pump housing, the pump cover fitted seal form of said engine oil pump assembly: the first, this structure is had relatively high expectations to the material of O shape rubber seal, such as oil resistance is when slightly poor, still there will be engine oil leakage.The second, harsher to the requirement of processing, assembling, when assembling, need to repeatedly adjust the concentricity between the pump housing, pump cover, mix up and fix with bolt afterwards.Cannot accurately ensure the two concentricity on the one hand, when use, dragging armature is lived, serious wear; Allotment of labor's skill is loaded down with trivial details on the other hand, and work efficiency is low.Three, this structure is accurately controlled the axial clearance between rotor and pump cover, the pump housing, and excesssive gap can affect oil pump capacity, too small be easy to stuck.
Model utility content
Technical problem to be solved in the utility model is, a kind of engine oil pump assembly is provided, and by changing the fit system between the pump housing and pump cover, further improves the sealability of assembly, and simplifies assembly technology.
To achieve these goals, the technological scheme that the utility model is taked is:
A kind of engine oil pump assembly, comprise pump cover and the pump housing of working in coordination and connecting, it is characterized in that: the pump housing comprises main body cylindraceous, the axis hole end of the binding end of main body the inner and main body outer end, wherein binding end has identical internal diameter with main body, but the external diameter of binding end is greater than the external diameter of main body, the rear end of binding end is with a ring surface joining with main body outer wall, and this ring surface is concordant with the interior edge face of pump cover; The inner of pump cover is processed with an indent blind hole; Described binding end embeds in described indent blind hole, the internal face interference fit of the outer wall of binding end and indent blind hole.
In the outer wall of described binding end and on the internal face of described indent blind hole, offer respectively semicircle orifice, and two semicircle orifices are just to forming axial circular hole, are provided with location pin in this circular hole.
Good effect of the present utility model is:
The pump housing of the present utility model is not established oil duct (hole), and binding end is embedded among pump cover, utilizes body binding end periphery and pump cover interference fit, has better sealing effect; Be easy to guarantee the concentricity between the pump housing and pump cover, be easy to accurately to control the axial clearance between rotor and pump cover, the pump housing, and general assembly be more convenient, has improved assembly efficiency.On the other hand, pump housing materials amount significantly reduces, and has saved O shape rubber seal and two connecting bolts, thereby has reduced manufacture cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.For more clearly showing structural feature of the present utility model, rotor, rotor shaft as engine oil pump assembly parts in figure, are saved.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As Fig. 1, the utility model comprises pump cover 1 and the pump housing 2 of working in coordination and connecting, and the rotor shaft that penetrates pump chamber from the axis hole of the pump housing 2 is provided with internal rotor and external rotor.On the inwall of pump cover 1, offer oil duct 1-3 and communicate with described oil duct 1-3 and as the oil-through hole 1-2 of engine oil pump assembly oil inlet and outlet, the lateral part of pump cover 1 also offers mounting hole 1-1.The inner of pump cover 1 is processed with an indent blind hole.
The pump housing 2 comprises main body 2-3 cylindraceous, the axis hole end 2-2 of the binding end 2-1 of main body 2-3 the inner and main body 2-3 outer end, wherein binding end 2-1 has identical internal diameter with main body 2-3, but the external diameter of binding end 2-1 is greater than the external diameter of main body 2-3, the rear end of binding end 2-1 is with a ring surface 2-4 who joins with main body 2-3 outer wall, and this ring surface 2-4 is concordant with the interior edge face of pump cover 1.
Described binding end 2-1 embeds in described indent blind hole, the internal face interference fit of the outer wall of binding end 2-1 and indent blind hole.
For ensureing the accurate eccentric location of rotor, in the outer wall of described binding end 2-1 and on the internal face of described indent blind hole, offer respectively semicircle orifice, and two semicircle orifices, just to forming axial circular hole, are provided with location pin in this circular hole, rotate to limit the pump housing 2.
Interior edge face with described ring surface 2-4 and pump cover 1 is made fitting surface, and places Gask-O-Seal at this fitting surface, by the bolt through described mounting hole 1-1, this engine oil pump assembly is fixed on diesel engine.
Engine oil pump assembly of the present utility model refers to the engine oil pump assembly for SD serial diesel engine.
Claims (2)
1. an engine oil pump assembly, comprise pump cover (1) and the pump housing (2) of working in coordination and connecting, it is characterized in that: the pump housing (2) comprises main body cylindraceous (2-3), the binding end (2-1) that main body (2-3) is inner and the axis hole end (2-2) of main body (2-3) outer end, wherein binding end (2-1) has identical internal diameter with main body (2-3), but the external diameter of binding end (2-1) is greater than the external diameter of main body (2-3), the rear end of binding end (2-1) is with a ring surface (2-4) joining with main body (2-3) outer wall, and this ring surface (2-4) is concordant with the interior edge face of pump cover (1), the inner of pump cover (1) is processed with an indent blind hole, described binding end (2-1) embeds in described indent blind hole, the outer wall of binding end (2-1) and the internal face interference fit of indent blind hole.
2. engine oil pump assembly as claimed in claim 1, it is characterized in that: in the outer wall of described binding end (2-1) and on the internal face of described indent blind hole, offer respectively semicircle orifice, and two semicircle orifices, just to forming axial circular hole, are provided with location pin in this circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172860.9U CN203757350U (en) | 2014-04-11 | 2014-04-11 | Oil pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172860.9U CN203757350U (en) | 2014-04-11 | 2014-04-11 | Oil pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203757350U true CN203757350U (en) | 2014-08-06 |
Family
ID=51252625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172860.9U Expired - Fee Related CN203757350U (en) | 2014-04-11 | 2014-04-11 | Oil pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203757350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972421A (en) * | 2016-07-20 | 2016-09-28 | 常州市恒泰源盛减速机配件厂 | All-dimensional leakage-free lubricating oil pump |
-
2014
- 2014-04-11 CN CN201420172860.9U patent/CN203757350U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972421A (en) * | 2016-07-20 | 2016-09-28 | 常州市恒泰源盛减速机配件厂 | All-dimensional leakage-free lubricating oil pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203757350U (en) | Oil pump assembly | |
| CN104500743A (en) | Sealing device between reverse-rotating shafts | |
| CN204402923U (en) | A kind of low noise liquid-ring vacuum pump | |
| CN203867961U (en) | Efficient centrifugal pump with impeller having a non-contact sealing function | |
| CN203627293U (en) | Sealing structure of pump shaft | |
| CN202546076U (en) | Rotary joint | |
| CN203584785U (en) | Single plunger ring structure for hydraulic plunger pump | |
| CN206592330U (en) | A kind of special sliding bearing holder structure of express pump | |
| CN105065464A (en) | High-sealability sealing ring structure for bearing | |
| CN211039213U (en) | Double-blade hydraulic servo swing motor | |
| CN203420873U (en) | Water-cooled mechanical sealing device for pumps | |
| CN203756324U (en) | Lubricating oil chamber wall structure applicable to supercharger | |
| CN204299860U (en) | A kind of internal messing water pump | |
| CN202326347U (en) | Automobile water pump | |
| CN206130508U (en) | Oil pump | |
| CN203835792U (en) | Double sealing structure of centrifugal pump | |
| CN103352887B (en) | A kind of single vane water pressure self-servo rotary valve | |
| CN201650729U (en) | Sealing gasket of master and auxiliary vane pump | |
| CN204082317U (en) | Turbine box venting valve transmitting assemblies | |
| CN209228683U (en) | A kind of double-layer seal cooling water pump of combustion engine | |
| CN202038362U (en) | Steering device casing assembly | |
| CN203114716U (en) | Piston rod sealing device of multiple-stage centrifugal pump | |
| CN202866926U (en) | Sealing oil plug structure and engine oil way | |
| CN203201677U (en) | Multiple sealing piston assembly | |
| CN201786729U (en) | Sealing device of submersible pump |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20210411 |