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Electric power steering box

A technology of electric power steering and steering gear, applied in the direction of electric steering mechanism, etc., can solve the problems of high heat generation, high manufacturing cost of steering power steering mechanism, low transmission efficiency, etc., and achieve long life, large transmission speed and power range, and mechanical efficiency high effect

Inactive Publication Date: 2015-07-22
CHANGZHOU INST OF MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the technical problems of low transmission efficiency of the rack-assisted steering gear in the prior art, large heat generation and high manufacturing cost of the steering assist mechanism

Method used

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  • Electric power steering box
  • Electric power steering box
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Examples

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Embodiment Construction

[0017] Such as figure 1 An electric power steering gear shown includes a left steering ball head 1, a rack 3, a booster motor 4, a steering gear housing 8, an input shaft 9, and a right steering ball head 10. A left end of the steering gear housing 8 is provided The support ring 2, the rack 3 are assembled in the support ring 2. The left steering ball head 1 and the right steering ball head 10 are respectively installed on the left and right ends of the rack 3. The booster motor 4 is installed on the support frame of the steering gear housing 8 through bolts On the power-assisted motor output shaft 6 is provided with a first transmission gear 5, the other end of the power-assisted motor output shaft 6 is mounted on the steering gear housing 8 through a ball bearing 7, and the rack 3 is provided with a steel ball lower spiral groove 31. A transmission nut 15 is mounted on the spiral groove of 3, and the first transmission gear 5 on the output shaft 6 of the booster motor is match...

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Abstract

The invention relates to a motor vehicle steering mechanism, in particular to an electric power steering box. The electric power steering box comprises a left steering ball, a rack, an assist motor, a steering box shell, an input shaft and a right steering ball, wherein the left end of the steering box shell is provided with a supporting ring; the rack is assembled inside the supporting ring; the left steering ball and the right steering ball are installed at the left and right ends of the rack respectively; the assist motor is installed on a supporting frame of the steering box shell through bolts; a first transmission gear is arranged on an output shaft of the assist motor; the other end of the output shaft of the assist motor is installed in the steering box shell through a ball bearing; the rack is provided with a steel ball lower spiral groove; a transmission nut is assembled on the spiral groove of the rack; the first transmission gear on the output shaft of the assist motor is matched with a second transmission gear on the transmission nut; the transmission nut is installed on a boss of the steering box shell through a needle bearing. The electric power steering box solves the technical problems that a rack power-assisting type steering box is low in transmission efficiency, large in heat value and the like in the prior art.

Description

Technical field [0001] The invention relates to a steering mechanism of a motor vehicle, in particular to an electric power steering gear. Background technique [0002] The electric power steering (Electric Power Steering, referred to as EPS) system is a new type of power steering system that emerged after the hydraulic power steering system. It has the incomparable advantages of the hydraulic power steering system. It not only saves energy, improves safety, but also Conducive to environmental protection, it is a high-tech that closely follows the development theme of modern automobiles and is an inevitable trend in the development of automobile steering systems. [0003] Compared with the traditional hydraulic power steering system, the electric power steering system has the following advantages: The oil pump of the hydraulic power steering system works even when it is not steering, which increases energy consumption. The EPS system only provides assistance when the electric moto...

Claims

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Application Information

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IPC IPC(8): B62D5/04
Inventor 田宏霞王峰
Owner CHANGZHOU INST OF MECHATRONIC TECH
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