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Steering shaft for electric boosting steering system

A technology of electric power steering and steering shaft, which is applied in the direction of electric steering mechanism, automatic steering control components, steering mechanism, etc., and can solve problems such as small matching surface, torque fluctuation of torsion bar, complex processing of input shaft and output shaft, etc.

Inactive Publication Date: 2007-10-17
SHANGHAI SHENZHOU VEHICLE RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mating process of the input shaft and the output shaft is relatively complicated, and the mating surface is small, which is prone to torque fluctuations on the torsion bar

Method used

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  • Steering shaft for electric boosting steering system
  • Steering shaft for electric boosting steering system

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Embodiment Construction

[0011] As shown in FIGS. 1 and 2 , the present invention mainly includes: an input shaft 10 , an output shaft 11 , and a torsion bar 12 . The connection method is as follows: in Fig. 1, 1 and 2 are the shell of the torque-angle composite sensor, 3 is the output end of the data line, and 4 and 5 are the inner rings that can rotate relative to the shell. 4 is called the position rotor, which is connected with the output shaft 11, and 5 is called the torque rotor, which is connected with the input shaft 10.

[0012] FIG. 2 is an assembly diagram of the installation device of the torque-rotation-angle composite sensor 13 designed in the present invention. The upper end of the input shaft 10 is fixedly connected to the steering wheel, and the lower end is connected to the output shaft 11 through the torsion bar 12 to transmit the driver's torque on the steering wheel; the output shaft 11 is connected to the wheel to be steered through the universal transmission and the rack steerin...

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Abstract

An electronic power-assisted steering system steering spindle, including input shaft 10, output shaft 11, torsion bar 12. Installation location and overload protection functions can be realized for torque rotation angle compound sensor 13. The moment torsion rotor 5 of torque rotation angle sensor 13 matches the input shaft 10 by key 14, the sensor position rotor 4 matches the output shaft 11 by key 15, and the fitting surface 16 of output shaft 11 and sensor 13 is knurl roll. Both ends of torsion bar 12 respectively interference fits with the input shaft 10 and the output shaft 11 hole. Angle of input shaft 10 between the tip plane6 and the tip plane 7 which fit the output shaft 11 is 168 degree, and the tip is the central symmetry shape. Output shaft 11 fits output shaft 10 are plane 8, plane 9.

Description

technical field [0001] The invention relates to a steering shaft of an electric power steering system, which is used for installing a torque angle sensor so as to realize precise positioning and overload protection of the torque angle sensor, and belongs to the field of transportation tools. Background technique [0002] The electric power steering system is a new type of power steering system that has appeared in recent years. It is mainly composed of sensors, control devices, reduction mechanisms and executive motors. One of the most important points is that the signal sent by the sensor on the rotating shaft must truly reflect the torque and steering angle on the rotating shaft. [0003] Usually, in the design of the steering shaft of the electric power steering system, most of them design a sensor transmission mechanism, that is, a sliding sleeve is arranged on the upper steering shaft, and an annular groove is arranged on the outer peripheral surface of the sliding slee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D6/10B62D5/04
Inventor 李欣陈杰赵学平
Owner SHANGHAI SHENZHOU VEHICLE RES & DEV
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