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Electric power steering apparatus

A technology of electric steering and steering torque, which is applied in the direction of electric steering mechanism, electromechanical device, power steering mechanism, etc. It can solve the problems of complex motor connection structure and achieve the effect of reducing size and manufacturing steps

Inactive Publication Date: 2008-01-23
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem is: the connection structure on the motor side is complex

Method used

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  • Electric power steering apparatus
  • Electric power steering apparatus
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Examples

Experimental program
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Embodiment Construction

[0033] Referring to the drawings, an embodiment will be described below. Fig. 1 is a structural principle diagram of an embodiment of an electric power steering device. The electric steering device includes, for example: a steering member (steering wheel and handle) 67 for steering; a motor 52, as a steering assist brushless motor, which is driven according to the steering of the steering member 67; The gear mechanism 68 transmits to the transmission 64 of the steering mechanism 63 ; the drive controller 51 for controlling the drive of the motor 52 . The steering member 67 is connected to the input shaft 66 .

[0034] The transmission 64 includes: an output shaft 69 connected to the input shaft 66 by a torsion bar (not shown); a connecting shaft 70 connected to the output shaft 69 by a universal joint; a small shaft connected to the connecting shaft 70 by a universal joint; Pinion shaft 61 ; rack shaft 62 , which has rack teeth that can engage with the pinion of pinion shaft...

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PUM

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Abstract

In an electric power steering apparatus which includes a brushless motor composed of a cylindrical motor case with a bottom; a bracket for covering an opening of the motor case; an end housing for supporting a non-output-shaft side bearing located on one side; a bus bar housing in a ring shape for storing a plurality of bus bars; and a rotational angle sensor, and drives the brushless motor with a flow of current according to the detected steering torque, the end housing has a cylindrical section with a flange surrounding the end on one side and is inserted into the motor case from the opening until the flange comes into contact with the bottom of the motor case, the bus bar housing is placed to surround the outer circumferential surface of the cylindrical section of the end housing, and the rotational angle sensor is placed in the cylindrical section.

Description

technical field [0001] The invention relates to an electric steering device, which includes a torque sensor for measuring steering torque and a steering assist brushless motor, and drives the brushless motor with current according to the steering torque measured by the torque sensor. Background technique [0002] An electric steering device used to reduce the driver's burden includes: an input shaft connected to a steering member (steering wheel, handle); an output shaft connected to a wheel through a pinion, a rack, etc.; a connecting shaft together; and a torque sensor that measures a steering torque applied to the input shaft based on a torsion angle induced on the connecting shaft, and the electric power steering apparatus controls driving of a steering assist motor based on the measured value of the steering torque, This is related to the output shaft. [0003] In such an electric steering apparatus, in recent years, a brushless motor has been adopted as a steering ass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCH02K11/0031H02K3/50H02K2203/09B62D5/0403H02K11/225
Inventor 神田尚武松原健新口升大槻荣高
Owner JTEKT CORP
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