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An electric power-assisted steering device which can overcome self amortization

An electric power steering and damping technology, which is applied in the direction of mechanical steering, can solve the problems of complex mechanical structure and control method, high power, high cost, etc., to avoid mechanical mechanism and control method, improve return performance, and consume less power Effect

Inactive Publication Date: 2008-04-09
株洲卓越高科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing electric power steering device, in order to overcome its own damping and improve the performance of returning to the center, when returning to the center, an auxiliary centering force is generated by controlling the reverse rotation of the motor to help return to the center. For this reason, it is necessary to add a set of mechanical structures Angle sensing device with complicated control method
This makes the electric power steering device more complicated, more expensive, and less reliable on the one hand;

Method used

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  • An electric power-assisted steering device which can overcome self amortization
  • An electric power-assisted steering device which can overcome self amortization
  • An electric power-assisted steering device which can overcome self amortization

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Embodiment Construction

[0011] As can be seen from the above drawings, the present invention contains a worm gear casing 1, a worm gear 2, a torque sensing device 3, a servo motor 4, a rack and pinion transmission 5 composed of a rack 10 and a rack sleeve 11, two Tie rods 9a, 9b. A return device 8 is provided in the inner cavity of the rack sleeve 11, and a collar groove 16 is provided on the rack 10. The return device 8 consists of a spring 13 with two sliders 12a, 12b, and two clips. Ring 15a, 15b, two stoppers 14a, 14b are formed. The two ends of the spring 13 are respectively fixed to the two sliders 12a, 12b, and the two ends of the spring 13 with the sliders 12a, 12b are respectively connected to the collars 15a, 15b. When the vehicle is turning, the rack gear 10 moves left and right. The two collars 15a, 15b of the return device 8 are respectively clamped in the two collar grooves 16 of the rack 10, and the spring 13 with the sliders 12a, 12b is limited between the two collars 15a, 15b. Two...

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PUM

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Abstract

The invention relates to an electric-powered steering device used in vehicles to overcome self-damping, the electric-powered steering device comprises a worm and gear, a torque sensor, a servo motor, and a gear rack transmission device consisting of a rack and a rack sleeve. The invention is characterized in that an aligning device is arranged in the rack sleeve; the rack is provided with a stopping ring groove; the aligning device consists of a sliding block, a spring, a stopping ring and a stopping block. When a vehicle is in turning, the spring is compressed, while the vehicle is in aligning, the spring releases actively and generates a force which can be used by the invention for overcoming the damping of the electric-powered steering device to help align, thereby improving the aligning performance; the invention can overcome self-damping without controlling the rotating of the motor and changing the control method, thereby avoiding complex mechanical structure and control method. The invention has simple structure, low cost and power consumption.

Description

technical field [0001] The invention relates to a steering device for a vehicle, in particular to an electric power steering device capable of overcoming its own damping. Background technique [0002] With the development of vehicle electronic technology, the electric power steering device of vehicles has been widely used due to its advantages of environmental protection, power saving, small footprint, flexible design, and convenient adjustment of control strategies. However, the electric power steering device itself has a large damping, which makes the centering performance of the vehicle worse, and the vehicle's centering performance is an important aspect of the vehicle's handling stability. In the existing electric power steering device, in order to overcome its own damping and improve the performance of returning to the center, when returning to the center, an auxiliary centering force is generated by controlling the reverse rotation of the motor to help return to the c...

Claims

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Application Information

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IPC IPC(8): B62D3/12
Inventor 陈五亮曹阳黄志平
Owner 株洲卓越高科技实业有限公司
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