Automotive electric hydraulic power-assisted steering pump assembly

Abstract

The invention relates to an automotive electric hydraulic power-assisted steering pump assembly comprising a motor, an oil tank and a hydraulic pump which are integrated. A controller assembly is arranged between the motor and the oil tank, the motor comprises a motor body and a motor shaft, the hydraulic pump comprises a pump body, a pump cover and a pump shaft, the pump body sequentially comprises a pump body main part, a pump body connection end cap and a valve mounting portion from front to rear, the front end of the pump body main part is connected with the pump cover, the pump body mainpart and the pump cover are arranged inside the oil tank, the pump connection end cap is connected with the rear end of the oil tank, the rear end of the valve mounting portion is fixedly connected with a motor front end cap, the motor shaft is connected with the pump shaft through a connection sleeve, and the controller assembly is mounted on the motor front end cap. The motor, the oil tank and the hydraulic pump are integrated, and the controller assembly is mounted on the motor front end cap, so that outside space is saved, and the whole structure is more compact.

Description

Technical field [0001] The invention relates to a steering pump assembly, in particular to an electric hydraulic power steering pump assembly for vehicles. Background technique [0002] At present, the electro-hydraulic power steering pump assemblies used on medium and large passenger cars, medium and heavy trucks are still purchased from different suppliers for motors, controller assemblies, and vane pump heads, and then assembled, controllers The assembly with the motor often requires more wires and adapters for electrical connection, and the oil tank needs to be installed separately, which takes up a large internal space of the car, and the process is cumbersome, which is not conducive to reducing production costs and shortening the production cycle. [0003] Such as Picture 9 As shown, the oil outlet on the double-acting vane pump commonly used in the existing steering pumps is arranged horizontally, while the spool valve mounting hole 5-232 is arranged longitudinally, and the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the electro-hydraulic power steering pump assembly used in medium and large passenger cars, medium and heavy trucks still purchases motors, controller assemblies, and vane pump pump heads from different suppliers, and then assembles them. The assembly with the motor often requires more wires and adapters for electrical connection, and the oil tank needs to be installed separately, occupying a large interior space of the car, and the process is cumbersome, which is not conducive to reducing production costs and shortening the production cycle

[0003] like Figure 9 As shown, the oil outlet hole on the double-acting vane pump commonly used in the existing steering pump is arranged horizontally, while the slide valve installation hole 5-232 is arranged vertically, and the two ends of the pressure oil hole 5-233 must be connected respectively The slide valve mounting hole 5-232 and the oil outlet hole are close to the outer part, resulting in a relatively long length of the pressure oil hole 5-233, generally about 50 mm, while the diameter of the pressure oil hole 5-233 is only 3 -4mm, and it belongs to non-planar drilling, which has high requirements for factory processing, and scrapped products are very likely to appear during the processing, and the processing of this hole belongs to the back end of the processing process. Once the front end is scrapped, the process from casting to processing will be wasted. High cost, not conducive to reducing production costs

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