CN202007977U

CN202007977U - Rotor oil pump with internal pump cover

Info

Publication number: CN202007977U
Application number: CN2011200448842U
Authority: CN
Inventors: 许仲秋; 刘光明; 杨福柱
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2010-06-04
Filing date: 2011-02-23
Publication date: 2011-10-12
Anticipated expiration: 2021-02-23
Also published as: CN102128344A; CN101881200A

Abstract

A rotor oil pump with an internal pump cover comprises a pump cover 6, a pump body 2, an internal rotor 3 and an external rotor 4, wherein the external rotor 4 is mounted in a rotor hole of the pump body 2, the internal rotor 3 is sleeved in a hole of the external rotor 4, the internal rotor 3 is provided with a step-shaped positioning ring 31, the step-shaped positioning ring 31 is positioned on the left of the internal rotor 3, and the pump cover 6 is mounted on the backs of the internal rotor 3, the external rotor 4 and the pump body 2. Due to the fact that a front pump cover mounted on the front side of an engine is changed into the internal pump cover mounted on the back, the problem of superficial oil leakage is completely solved and material cost is reduced. Since the pump cover is mounted inside the oil pump and a combined surface of the pump cover with the pump body does not need a sealing pad, one procedure for processing a sealing groove is decreased, manufacturability of machining is improved, and production cost is reduced. Particularly, after the front pump cover is changed into the internal pump cover, a sealing ring hole of the front pump cover is in an integral structure, so that sealing degree of mounting of an oil sealing hole of a crank shaft of the front pump cover and the crank shaft is improved and sealing effect is enhanced.

Description

Interior pump cover rotor engine oil pump

Technical field

The utility model relates to a kind of rotor engine oil pump of motorcar engine, particularly a kind of interior pump cover rotor engine oil pump.

Background technique

The bottom of the aluminium matter front cover of existing motorcar engine is provided with the whole front pump cover rotor engine oil pump that connects, comprise that pump cover 1, the pump housing 2, internal rotor 3 and external rotor 4(are as shown in Figure 1), internal rotor 3 and external rotor 4 are installed in the rotor hole of the pump housing 2, stepped shape positioning ring 31 is arranged on the internal rotor 3, stepped shape positioning ring 31 is positioned at the right of internal rotor 3, pump cover 1 is installed in the front of inside and outside rotor, and pump cover 1 and the pump housing 2 junction planes are provided with fixing ring 5.Its deficiency is: because of pump cover 1 assembling centering difficulty big, influence the sealing of oil sealing and spindle nose, its sealability that connects the plane is relatively poor, seepage takes place easily, the seal groove difficulty of processing is bigger simultaneously, and precision is difficult to control, and manufacturing efficiency is low, the manufacture cost height is not suitable for the technical requirements that modernized high-performance enginer uses.

Summary of the invention

The purpose of this utility model is the deficiency that overcomes on the prior art, and a kind of interior pump cover rotor engine oil pump is provided, to improve the image appearance of oil pump integral body, solve the difficult problem of original pump cover, pump housing junction plane oil impregnate, improve machining accuracy and efficient, reduce production costs.

The technical solution of the utility model is: pump cover rotor engine oil pump in a kind of, comprise the pump housing, pump cover, internal rotor and external rotor, external rotor is installed in the rotor hole of the pump housing, and internal rotor is sleeved in the hole of external rotor, the stepped shape positioning ring is arranged on the internal rotor, and pump cover is installed in the back side of inside and outside rotor.

The further technological scheme of the utility model is: the stepped shape positioning ring is positioned at the left side of internal rotor.

The utility model makes appearance complete more attractive in appearance owing to change the positive oil pump front pump cover of installing of motor into back mounted interior pump cover, has solved the difficult problem of surperficial oil impregnate fully; Pump cover changes steel plate into by aluminium, can reduce cost of material, simultaneously, pump cover is contained in oil pump inside, does not need sealing gasket with the junction plane of the pump housing, has saved 0 RunddichtringO again, reduce the one procedure of processing seal groove, improved mach manufacturability, reduced cost of production; Behind the pump cover, the seal ring hole of front pump cover becomes overall structure, has improved the seal degree of front pump cover crank shaft oil seal hole and crankshaft installed, has improved sealing effect in particularly front pump cover being changed into.

Below in conjunction with the drawings and specific embodiments detailed content of the present utility model is further described.

Description of drawings

Fig. 1 is the structural representation of existing front pump cover rotor engine oil pump;

Fig. 2 is a structural representation of the present utility model.

Embodiment

As shown in Figure 2: pump cover rotor engine oil pump in a kind of, comprise pump cover 6, the pump housing 2, internal rotor 3 and external rotor 4, external rotor 4 is installed in the rotor hole of the pump housing 2, internal rotor 3 is sleeved in the hole of external rotor 4, stepped shape positioning ring 31 is arranged on the internal rotor 3, stepped shape positioning ring 31 is positioned at the left side of internal rotor 3, and pump cover 6 is installed in the back side of internal rotor 3, external rotor 4 and the pump housing 2.

Claims

1. pump cover rotor engine oil pump in a kind, comprise the pump housing, pump cover, external rotor and internal rotor, external rotor is installed in the rotor hole of the pump housing, and internal rotor is sleeved in the hole of external rotor, the stepped shape positioning ring is arranged on the internal rotor, it is characterized in that pump cover is installed in the back side of inside and outside rotor.

2. pump cover rotor engine oil pump in according to claim 1 is characterized in that the stepped shape positioning ring is positioned at the left side of internal rotor.