CN2680955Y - Lubricating pump of internal combustion engine - Google Patents
Lubricating pump of internal combustion engine Download PDFInfo
- Publication number
- CN2680955Y CN2680955Y CN 200420025724 CN200420025724U CN2680955Y CN 2680955 Y CN2680955 Y CN 2680955Y CN 200420025724 CN200420025724 CN 200420025724 CN 200420025724 U CN200420025724 U CN 200420025724U CN 2680955 Y CN2680955 Y CN 2680955Y
- Authority
- CN
- China
- Prior art keywords
- pump
- pump shell
- oil
- axle
- rotor
- 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 - Lifetime
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- Rotary Pumps (AREA)
Abstract
The utility model relates to an oil pump of the inner combustion engine. The inventor firstly applies a gear pump of inner engagement, which solves the series oil leakage problem of the original oil pump but still the installation bolt holes of a few pumps have oil leakage phenomenon. The utility model comprises a pump shell, an inner rotor, an outer rotor, an axle and a port plate. The inner rotor is positioned in the outer rotor and fixed on the axle to be installed in the pump shell. The pump shell is in a concave plate shape. The opening end of the pump shell is provided with a positioning convex table. The port plate is screwed into and fixed on the opening portion of the pump shell. One end of the axle is sheathed in the center hole of the port plate. The utility model changes the positioning convex table when assembly the oil pump and the diesel into the pump shell and thus a little amount off oil leaking from the assembly seam of the port plate and the pump shell can not be blocked by the contact surface formed by the pump shell, the diesel body and the outer ring of the bearing to naturally enter into the diesel to thoroughly eliminate the phenomenon of oil leakage.
Description
Affiliated technical field
The utility model relates to a kind of engine oil pump of internal combustion engine, particularly the engine oil pump of internal combustion engine that uses in the single cylinder diesel lubrication system.
Background technique
By my patent No. of application is a kind of interior engagement cycloid gear pump of ZL00216717.4, and it is improved to whole containment type structure with the structure of former oil pump split superposed type.In this structure, plane valving surface has just in time formed the positioning boss that oil pump is installed a little more than the pump case end face.The engagement cycloid gear pump has solved the serious problem of former oil pump leakage of oil in this, and the while output oil pressure is can regulate also.Yet in actual use, we find to still have the construction bolt hole of minority pump that the oil impregnate phenomenon is arranged.
Summary of the invention
The purpose of this utility model is to provide a kind of engine oil pump of internal combustion engine of stopping oil leakage phenomenon.
Mentality of designing of the present utility model is the diameter that reduces thrust plate, positioning boss during with oil pump and diesel engine installation changes pump case into by original thrust plate, the a small amount of oil that leaks out the assembling slit between thrust plate and pump case just is not subjected to the obstruct of the surface of contact of pump case and diesel-engine body, bearing outer ring formation like this, enters in the diesel engine and take advantage of a situation.According to above-mentioned mentality of designing, technical solution of the present utility model is: a kind of engine oil pump of internal combustion engine, it is made up of pump case, internal rotor, external rotor, axle and thrust plate, the flank profil of inside and outside rotor is a cycloid, internal rotor is positioned at external rotor, and be fixed on the axle, certain throw of eccentric is arranged between the inside and outside rotor, and be contained in the pump case, pump case is the dish type of inner concavity, the opening end of pump case has a boss that matches and locate with diesel-engine body, and thrust plate embeds and also is fixed on the pump case opening, and an end of axle is enclosed within the thrust plate center hole.
The utility model is because the positioning boss during with the installation of oil pump and diesel engine changes pump case into by original thrust plate, the a small amount of oil that leaks out the assembling slit between thrust plate and pump case just is not subjected to the obstruct of the surface of contact of pump case and diesel-engine body, bearing outer ring formation like this, enter in the diesel engine and take advantage of a situation, thoroughly stopped oil leakage phenomenon.
Description of drawings
Accompanying drawing is the utility model sectional view.
Among the figure: 1, pump case, 2, thrust plate, 3, internal rotor, 4, axle, 5, external rotor, 6, boss.
Embodiment
As figure, a kind of engine oil pump of internal combustion engine, it is by pump case (1), internal rotor (3), external rotor (5), axle (4) and thrust plate (2) are formed, in, external rotor (3,5) flank profil is a cycloid, internal rotor (3) is positioned at external rotor (5), and be fixed on the axle (4), in, external rotor (3, certain throw of eccentric is arranged 5), and be contained in the pump case (1), pump case (1) is the dish type of inner concavity, and the opening end of pump case (1) has a positioning boss (6), and thrust plate (2) embeds and be fixed on pump case (1) opening, thrust plate (2) surface is a little less than boss (6) surface, and an end of axle (4) is enclosed within thrust plate (2) center hole.
Claims (1)
1, a kind of engine oil pump of internal combustion engine, it is made up of pump case, internal rotor, external rotor, axle and thrust plate, the flank profil of inside and outside rotor is a cycloid, and internal rotor is positioned at external rotor, and is fixed on the axle, certain throw of eccentric is arranged between the inside and outside rotor, and be contained in the pump case, pump case is the dish type of inner concavity, and thrust plate embeds and is fixed on the pump case opening, one end of axle is enclosed within the thrust plate center hole, it is characterized in that: the opening end of pump case has a boss that matches and locate with diesel-engine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025724 CN2680955Y (en) | 2004-03-26 | 2004-03-26 | Lubricating pump of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025724 CN2680955Y (en) | 2004-03-26 | 2004-03-26 | Lubricating pump of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2680955Y true CN2680955Y (en) | 2005-02-23 |
Family
ID=34607087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420025724 Expired - Lifetime CN2680955Y (en) | 2004-03-26 | 2004-03-26 | Lubricating pump of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2680955Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389284C (en) * | 2004-03-24 | 2008-05-21 | 陈杰余 | Machine oil pump of I.C. engine |
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN103758607A (en) * | 2014-01-07 | 2014-04-30 | 陈锐志 | Engine oil pump with warping-preventive screw |
-
2004
- 2004-03-26 CN CN 200420025724 patent/CN2680955Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389284C (en) * | 2004-03-24 | 2008-05-21 | 陈杰余 | Machine oil pump of I.C. engine |
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN102829315B (en) * | 2012-08-30 | 2015-05-20 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN103758607A (en) * | 2014-01-07 | 2014-04-30 | 陈锐志 | Engine oil pump with warping-preventive screw |
| CN103758607B (en) * | 2014-01-07 | 2016-07-06 | 陈锐志 | A kind of with the anti-lubricating oil pump sticking up screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080521 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |