Electric power steering system

A technology of electric power steering and electric motor, which is applied in the direction of electric steering mechanism, etc., can solve the problems of stable use and increased maintenance cost, and achieve the effect of flexible assembly and simple structure

Pending Publication Date: 2016-02-10
ADVANCED MICRO ELECTRONIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the introduction of many electronic units, the cost of manufacturing and maintenance will increase accordingly, and the stability of use is not as reliable as that of mechanical hydrauli

Method used

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  • Electric power steering system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example one

[0035] Electric power steering system, such as figure 1 Shown, including ball screw 1, ball nut 2, motor 5, swing arm 6;

[0036] The ball nut 2 is adapted to the ball screw 1, the circumferential rotation is restricted and the ball screw 1 rotates in the positive and negative directions to move axially along the ball screw 1;

[0037] The outer edge of the ball nut 2 is provided with external teeth;

[0038] External teeth are provided on the outer edge of one end of the swing arm 6;

[0039] The external teeth provided at one end of the swing arm 6 mesh with the external teeth provided at the outer edge of the ball nut 2, so that the other end of the swing arm 6 can swing with the axial movement of the ball nut 2;

[0040] The motor 5 is used to drive the ball screw 1 to rotate;

[0041] The ball screw 1 is connected with the steering wheel.

[0042] Preferably, the ball screw 1 is elastically connected to the steering wheel through the input shaft, so that the elec...

Example Embodiment

[0044] Example two

[0045] Based on the first embodiment, the electric power steering system further includes a first driving element and a second driving element;

[0046] The first driving element is coaxially combined with the output shaft of the electric motor 5;

[0047] The second driving element is coaxially combined with the ball screw 1;

[0048] The electric motor 5 drives the ball screw 1 to rotate through the first driving element and the second driving element.

[0049] Preferably, the first driving element is a gear;

[0050] The outer edge of the second driving element is uniformly provided with external teeth that can be matched with the gear in the axial direction.

[0051] Preferably, the first driving element is a worm;

[0052] The second driving element is a worm gear matched with the worm.

[0053] Preferably, the transmission between the first driving element and the second driving element is through a transmission belt 4;

[0054] The motor 5 drives the ball screw 1 ...

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PUM

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Abstract

The invention discloses an electric power steering system which comprises a ball screw, a ball nut, a swing arm and a motor; the ball nut is matched with the ball screw, is restricted from rotating circumferentially and can move axially along the ball screw along forward rotation and reverse rotation of the ball screw; external teeth arranged at one end of the swing arm are meshed with external teeth arranged on the periphery of the ball nut, so that the other end of the swing arm can swing along the axial movement of the ball nut; the motor is used for driving the ball screw to rotate; the ball screw is connected with a steering wheel. According to the electric power steering system, the structure is simple, and the assembly is flexible.

Description

technical field [0001] The invention relates to automobile steering technology, in particular to an electric power steering system. Background technique [0002] In order to reduce the operating force of the driver's action on the steering wheel (also called the steering wheel), it is necessary to use external power to generate steering assist force, and the device that uses external power to generate steering assist force is called a steering assist device. [0003] There are three common types of power steering: mechanical hydraulic power steering, electronic hydraulic power steering, and electric power steering. [0004] Mechanical hydraulic power steering system, the main components are hydraulic pump, oil pipe, pressure fluid control valve, V-shaped transmission belt, oil storage tank and so on. This power assist method is to convert part of the engine power output into hydraulic pump pressure, and apply auxiliary force to the steering system to turn the tires. Accord...

Claims

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Application Information

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IPC IPC(8): B62D5/04
Inventor 杰克陈
Owner ADVANCED MICRO ELECTRONIS CO LTD
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