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Built-in type positioning and unloading device for auto power diverter

A technology of power steering gear and unloading device, which is applied in mechanical steering gear, fluid steering mechanism, etc., can solve the problems of difficult installation, poor sealing performance, increased pressure of hydraulic system, etc., and achieves simple positioning and unloading structure, automatic Good sealing performance and timely unloading effect

Inactive Publication Date: 2007-10-17
JIANGSU GANGYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the rack piston moves to the limit position, the resistance increases obviously, causing the pressure of the oil pressure system to rise, which will easily damage the oil pressure system and other related components. carry out the necessary unloading
The unloading device is connected by the middle oil plug installed on the rack piston and the unloading ejector rod, and the steel balls are supported by springs at both ends. Because the unloading structure is complex, the installation is difficult, and the sealing performance is poor, the unloading effect not ideal

Method used

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  • Built-in type positioning and unloading device for auto power diverter

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Embodiment Construction

[0012] The automotive power steering gear has a built-in positioning and unloading device, which consists of valve seat 1, left unloading valve 2, oil delivery channel 3, housing 4, positioning rod 5, left positioning sleeve 6, rack piston 7, radial oil channel 8 , right unloading valve 9, right positioning sleeve 10, process plug 11, threaded column 12, middle oil plug 13, screw assembly 14 and inner oil passage 15 are jointly formed. The screw assembly 14 is screwed with the rack piston 7, and the rack piston can move left and right in the housing 4. The right side of the valve seat 1 is axially threaded to the left unloading valve 2, and the inner oil passage 15 communicates with the left end of the left unloading valve 2. On one side of the left end face of the rack piston 7 and the corresponding position of the left unloading valve 2 installed on the right end face of the valve seat 1, there is an axial blind hole for installing the left positioning sleeve 6, and the posi...

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Abstract

The built-in locating and relieving device for automobile power steering gear consists of valve seat, left relief valve, oil path, casing, locating rod, left locating sleeve, rack piston, radial oil channel, right relief valve, right locating sleeve, technological plug, thread column, middle oil plug, screw assembly and inner oil channel. When the rack piston is shifted downwards to the left or the right limit position under the push of the screw assembly, the corresponding valve core is pushed with the locating rod or the right locating sleeve to conduct the relief valve to relieve. The present invention has simple structure, and timely and complete reliable relief, and is especially suitable for use in heavy and middle duty car.

Description

technical field [0001] The invention relates to an unloading device, in particular to an unloading device for an automobile power steering gear. Background technique [0002] The car driver rotates the screw rod of the car power steering gear by manipulating the steering wheel, so that the matched rack piston moves linearly to drive the car to turn. In the prior art, in order to reduce the labor intensity of the driver, an oil pressure system is provided in the automobile power steering gear to boost the movement of the rack piston. However, when the rack piston moves to the limit position, the resistance increases obviously, causing the pressure of the oil pressure system to rise, which will easily damage the oil pressure system and other related components. Perform necessary unloading. The unloading device is connected by the middle oil plug installed on the rack piston and the unloading ejector rod, and the steel balls are supported by springs at both ends. Because the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/065B62D3/04
Inventor 宋海兵张如清王春宏谭国强
Owner JIANGSU GANGYANG
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