Power steering pump establishment a cover plate for passageway improve and construction process

摘要

The present invention relates to a power steering pump is used in a car, from the low-pressure passage in detail 1 that the flow rate supplied to the low pressure portion is formed in both sides in the flow rate to the second low-pressure supplying portion of both the flow rate supplied from the first low-pressure portion in the same manner even in any environment of the sides so that it can be supplied to the second low-pressure installing a second balance passage communicating the lower side so that the low-pressure portion to be one to reduce the occurrence of vibration and noise when operating the pump. ; This invention is to allow access to the rotor and the rotor connected to the drive shaft Installed vanes and cam ring rotatably bui ; and the body built the cam ring and at the same time supporting the drive shaft; ; is inserted between the body and the cam ring section, In contrast to the suction area and the cam ring side plates provided respectively corresponding to the same time the high pressure port to the high pressure chamber in the body in communication with the low pressure port and a discharge area corresponding to the same manner; ; the outer periphery of the inner periphery of the body and cam ring is formed inside the body and formed at the same time as the clearance between the upper intake in communication with the low pressure passage for introducing the working oil from the outer chamber; ; to form a gap between the upper semicircular portion of the body the inner and outer cam ring the branch passage and the low pressure port and said suction silreul two prong-like communicating with each of said side plates; ; and one end surface of the body (1), the cam ring 30 at the same time coupled to the opening cross-section of the has a cross section in contact, the first low-pressure section 20 at a position corresponding to the suction chamber 10 is formed in the end face is formed in a concave shape, the branch groove formed on both sides from the first low-pressure section 20 6 and the associated "and is formed into a concave shape, the second low-pressure portion formed in the two sides (20, second low-pressure section 20 'in) is in communication with the lower side so that the balance passage 26 is formed in the cover plate (2) configuration is, ; cam ring has a through hole on the inside of the cover plate to the dowel insertion groove formed to a predetermined depth and at the same time having the alignment pin to protrude by a predetermined amount, so that the alignment pin through- was formed, and was brought to the side plate forming the insertion hole such that the dowel is inserted, ; a predetermined depth so as to support the end surface of the cover plate by inserting its end in a position corresponding to the drive shaft of grooved shaft will be inserted.