CN201891457U

CN201891457U - Side engine front end cap engine oil pump

Info

Publication number: CN201891457U
Application number: CN201020649660XU
Authority: CN
Inventors: 许仲秋; 向志奇
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2010-11-27
Filing date: 2010-11-27
Publication date: 2011-07-06
Anticipated expiration: 2020-11-27

Abstract

The utility model relates to a side engine front end cap engine oil pump, which comprises a pump body 1, a pump cap 2, a transmission gear 3, a transmission shaft 4, an outer rotor 5 and an inner rotor 6, wherein the pump body 1 is arranged on an engine cylinder end cap and is arranged at one side on the engine cylinder body end cap, far away from a crank shaft 7, the transmission gear 3 is arranged at the upper part of the transmission shaft 4 and is connected with a gear arranged on the crank shaft, both ends of the transmission shaft 4 are respectively arranged in shaft holes of the pump body 1 and the pump cap 2, the outer rotor 5 and the inner rotor 6 are arranged in rotor holes of the pump body 1 and the pump cap 2, and during operation, the transmission gear 3 transmits the torque of an engine onto the engine oil pump through the gear arranged on the crank shaft. The side engine front end cap engine oil pump is applicable to rotor type engine oil pumps and gear type engine oil pumps. Compared with the prior art, the side engine front end cap engine oil pump has the characteristics of compact structure, safety, reliability and high volume efficiency and easiness in installation. When the oil pump operates, an inner rotor section line and an outer rotor section line are mutually engaged and are precise and stable, the noise is low, the engine oil pressure and the flow rate are stable, and the environment-protection goal of emission reduction and noise reduction are reached.

Description

Side putting type motor head lid oil pump

Technical field

The utility model relates to a kind of structure of engine oil pump of internal combustion engine, particularly a kind of side putting type motor head lid oil pump.

Background technique

At present, the motor that larger proportion is arranged is integrated cylinder end caps and rotor-type oil pump from saving the angle of cost, moves by the direct driving machine oil pump of bent axle internal rotor.This technology is used very ripe on the car of little discharge capacity, but on powerful motor, because the moment of torsion that transmits is big, the bent axle gap of beating is big, can produce periodical impulse force in the middle of the operation, crankshaft center is difficult for aliging with the rotor of engine oil pump center when adding the assembling oil pump, causes in the middle of the engine operation process, and inside and outside rotor engaged does not have the accident that the gap produces the rotor cracking.Meanwhile, owing to adopt the bent axle transmission, oil pump all uses cover plate structure, exists the defective of cover plate end face draining, and volumetric efficiency is not high.

Summary of the invention

The purpose of this utility model is the above-mentioned deficiency that overcomes prior art, and provides a kind of compact structure, installation easily, side putting type motor head safe and reliable, that volumetric efficiency is high to cover oil pump.

The technical solution of the utility model is: a kind of side putting type motor head lid oil pump, comprise the pump housing, pump cover, transmission shaft, external rotor and the internal rotor that are arranged on the engine cylinder-body end cap, the pump housing is arranged on the engine cylinder-body end cap side away from bent axle, the two ends of transmission shaft are installed in respectively in the axis hole of the pump housing and pump cover, and external rotor and internal rotor are installed in the rotor hole of the pump housing and pump cover.

The further technological scheme of the utility model is: comprise that also driving gear, driving gear are installed in the top of transmission shaft, and connect with gear on the bent axle.

During operation, driving gear by the gear on the bent axle the transmission of torque of motor on oil pump.

The utility model both had been applicable to rotor-type oil pump, also was suitable for gear type oil pump, compared with prior art, had following characteristics:

1, the utility model is owing to adopt the drive mechanism of driving gear, the bent axle gap has been stopped in the gap that driving gear is meshed effectively and operation is beated to the influence of rotor clearance, the impact of having transmitted when having eliminated the bent axle operation, reduced the load of rotor, improve the Security and the stability of internal rotor, avoided the generation of rotor CRACKING ACCIDENT.

2, the utility model is owing to used pump cover, and main shaft is a double supporting structure, has eliminated the defective of a large amount of drainings of cover plate structure oil pump end face, and the volumetric efficiency that has improved oil pump is more than 5%; Simultaneously, the oil pump rotor end-face gap can increase to 0.04-0.10mm and not influence the flow of oil pump, has reduced the dimensional accuracy of the rotor chamber degree of depth and rotor thickness, has saved processing cost.

3, since do not had bent axle to the rotor adverse influence, the back lash of inside and outside rotor can be in the past little direction repair, during the oil pump running, inside and outside molded lines of rotor is meshing with each other steadily accurate, thereby reduced noise, further improve the stability of engine oil pressure and flow, reached the environmental protection purpose that reduces discharging noise reduction.

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

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1.

Embodiment

Shown in Fig. 1-2: a kind of side putting type motor head lid oil pump, it comprises the pump housing 1, pump cover 2, driving gear 3, transmission shaft 4, external rotor 5 and the internal rotor 6 that is arranged on the engine cylinder-body end cap, the pump housing 1 is arranged on the engine cylinder-body end cap side away from bent axle 7, driving gear 3 is installed in the top of transmission shaft 4, and connect with gear on the bent axle, the two ends of transmission shaft 4 are installed in respectively in the axis hole of the pump housing 1 and pump cover 2, and external rotor 5 and internal rotor 6 are installed in the rotor hole of the pump housing 1 and pump cover 2.

During operation, driving gear 3 by the gear on the bent axle the transmission of torque of motor on oil pump.

The utility model is not limited to above-mentioned concrete structure, as long as adopt the end cover of engine oil pump, and the oil pump main body is in bent axle one side, and the structure by the operation of gear transmission oil pump just drops within the protection domain of the present utility model.

Claims

1. a side putting type motor head covers oil pump, it comprises the pump housing, pump cover, transmission shaft, external rotor and the internal rotor that is arranged on the engine cylinder-body end cap, the two ends of transmission shaft are installed in respectively in the axis hole of the pump housing and pump cover, external rotor and internal rotor are installed in the rotor hole of the pump housing and pump cover, it is characterized in that the pump housing is arranged on the engine cylinder-body end cap side away from bent axle.

2. side putting type motor head according to claim 1 lid oil pump is characterized in that also comprising that driving gear, driving gear are installed in the top of transmission shaft, and connects with gear on the bent axle.