Supercharge Your Innovation With Domain-Expert AI Agents!

Electric power steering device

An electric power steering, electric motor technology, applied in the direction of electric steering mechanism, etc., can solve the problems of influence, position accuracy deviation, inability to assemble, etc.

Inactive Publication Date: 2008-07-09
NSK LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Depending on the configuration of the circuit module, there are: or the connection terminals of the circuit part become longer; or in the case of deviations in the positional accuracy of the front end of the connection terminal of the circuit part, etc., when assembled to the circuit module, the connection terminal is bent. It cannot be assembled; it is difficult to assemble, or the connection terminal may be damaged, etc., which will affect the assembly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric power steering device
  • Electric power steering device
  • Electric power steering device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0041] Next, a first embodiment of the present invention will be described.

[0042] 1 is an external view of the main components of the electric power steering system according to the first embodiment, FIG. 2 is an exploded perspective view of the main components, FIG. 3 is a perspective view illustrating the shape of a gear box, and FIG. 5 is a perspective view illustrating a state in which the motor and covers are removed from the structure shown in FIG. 1 . In addition, in order to avoid complicating the drawing, illustrations of the steering shaft, the input shaft, the output shaft, and the reduction gear connected thereto are omitted.

[0043] In Fig. 1 to Fig. 5, 11 is the gearbox of the steering device, and 12 is the electric motor. Although not shown, inside the gearbox 11, a cylindrical input shaft connected to the steering shaft, a torsion bar coaxially arranged inside it, and a torsion bar connected to the torsion bar and coaxially arranged with the input shaft T...

no. 2 approach

[0082] Next, an electric power steering system according to a second embodiment of the present invention will be described. The electric power steering system of the second embodiment is different from the electric power steering system of the first embodiment except for the shapes of the gear box and the module mounting parts of the first embodiment, and other structural components are not changed. The same structural components of the electric power steering device are marked with the same symbols and their descriptions are omitted, and only the differences are described.

[0083] FIG. 10 is a diagram illustrating an outline of a gear case 25 and a module mounting member 26 of an electric power steering system according to a second embodiment, which is similar to FIG. 17(a) and FIG. 17(b) described in the subject to be solved by the present invention. It is easy to understand the structure by comparison. 10( a ) shows the state before mounting of the module mounting member ...

no. 3 approach

[0095] Next, an electric power steering system according to a third embodiment of the present invention will be described. FIG. 15 is a diagram illustrating an outline of a gear box 31 and a module mounting member 33 of an electric power steering system according to a second embodiment, which is similar to FIG. 17(a) and FIG. 17(b) described in the subject to be solved by the present invention. It is easy to understand the structure by comparison. 15( a ) shows the state before mounting of the module mounting member 13 , and FIG. 15( b ) shows the state after mounting.

[0096] In the gear case 31 of the third embodiment, the first plane 31b1 and the second plane 31b2 intersect each other substantially perpendicularly in an L-shape.

[0097] Furthermore, the output terminal of the torque sensor 15 is on a plane including the above-mentioned input shaft, and the front end portion of the output terminal is arranged obliquely in a direction away from the input shaft.

[0098] O...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is an electric power steering device which is arranged with the circuit module of the control device, namely a power module, a car frame module or control module and is easy to be installed on the car and has less effect caused by heating or noise. The upper half part of the gear box is formed on the box body of the rectangular solid which is arranged with a worm speed reducer at the inner side. The first plane which is outsider comparing with the axis of the electric motor shaft on the gear box viewed from the auxiliary engaging surface of the worm wheel, and the second plane intersectant with the first plane is taken as the installing surface of the car frame module and the control module. As the first plane spaces the auxiliary engaging surface of the worm wheel for farthest, therefore the effect of the heat generated from the power module can be alleviated and the effect of heat or noise to the car frame module arranged on the second plane can be alleviated.

Description

technical field [0001] The present invention relates to an electric power steering device for a vehicle, and more particularly to an arrangement structure of a circuit module of a control device thereof. Background technique [0002] The electric power steering device for vehicles is configured to detect the steering torque generated on the steering shaft connecting the steering wheel and the steering mechanism, and control the output power of the motor according to the detected steering torque and the vehicle speed detected by the vehicle speed sensor, and through gears and other The reduction gear transmits the driving force of the electric motor to the steering shaft to appropriately assist the steering torque of the steering wheel. [0003] In this kind of electric power steering control device, it is necessary to have a torque detection circuit for detecting the steering torque, a control circuit for controlling the magnitude of the motor current based on the detected s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
Inventor 樫本圭司新乡正宪川田秀明筱原茂雄佐藤浩一
Owner NSK LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com