Oil Pump with Improved Structure

Abstract

An oil pump with improved structure comprises a motor casing, a motor cap, and an oil pump. The motor cap comprises a through hole, and is used for the enclosure of a motor in cooperation with the motor casing. The interior of the motor is assemblingly provided with a rotating shaft passing at one end thereof through the through hole of the motor cap and an oil pump joint. The oil pump comprises the oil pump joint, a cap body, and a rotor, the oil pump joint is projectingly provided on and integratedly formed with the motor cap. The rotor of the oil pump is assemblingly provided on the rotating shaft of the motor. In this case, neither the need for the connection or additional manufacture and assembly of a rotating shaft of the oil pump, nor the problem resulted from the interconnection may occur. Moreover, the concentricity may be assured, and the cost may be reduced significantly as well.

1 . An oil pump with improved structure, comprising:
 a motor casing;   a motor cap comprising a through hole, fixedly provided on one side of said motor casing, and used for the enclosure of a motor in cooperation with said motor casing, the interior of said motor being assemblingly provided with a rotating shaft passing at one end thereof through said through hole of said motor cap and an oil pump joint; and   an oil pump comprising said oil pump joint, a cap body, and a rotor, said oil pump joint being projectingly provided on and integratedly formed with said motor cap, said rotor of said oil pump being assemblingly provided on said rotating shaft of said motor, while said oil pump joint being sealingly covered by said cap body.   
     
     
         2 . The oil pump with improved structure according to  claim 1 , wherein said rotor comprises an inner rotor and an outer rotor, said inner rotor being assemblingly provided on said rotating shaft, while assemblingly provided inside said outer rotor, said rotating shaft being further cooperatively coupled with said outer rotor by means of cooperative coupling between itself and said inner rotor. 
     
     
         3 . The oil pump with improved structure according to  claim 1 , wherein said oil pump joint and said motor cap are formed intergratedly by casting.