Unlock instant, AI-driven research and patent intelligence for your innovation.

Steering system actuator, and use of the actuator in a steer-by-wire steering system

A steering system and actuator technology, applied in steering rods, steering mechanisms, electric steering mechanisms, etc., can solve problems such as stress increase, and achieve the effect of improving service life

Active Publication Date: 2020-05-19
ZF FIEDRICHSHAFEN AG
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems can arise for such actuators if transverse forces act on the yoke and thus also on the main journal, wherein the transverse forces can cause bending moments in the main shaft , so that an increase in stress occurs for the components of the spindle

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
  • Steering system actuator, and use of the actuator in a steer-by-wire steering system
  • Steering system actuator, and use of the actuator in a steer-by-wire steering system
  • Steering system actuator, and use of the actuator in a steer-by-wire steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 Shown is a known actuator 1 , also referred to as servomotor 1 , which has a housing 2 fastened to an axle carrier of a motor vehicle and two articulation forks 3 arranged diametrically opposite one another, 4. The knuckle yokes are generally also referred to as knuckle joints 3, 4, and they are used to connect to tie rods (not shown). The actuator 1 comprises a spindle drive with an axially displaceable spindle 5 which can be driven, that is to say displaceable, by an electric motor 7 via a spindle nut 6 . In the region of the spindle nut 6 , the spindle 5 has a self-locking running thread 5 a in the form of a trapezoidal thread, which cooperates with a corresponding internal thread 6 a of the spindle nut 6 . During rotation of the spindle nut 6 , the spindle nut 6 executes (in the figure) an axial movement to the right or to the left, wherein the spindle 5 is prevented from twisting in a manner not shown. The main shaft 5 has two opposite main shaft or fixe...

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

Disclosed is a steering system actuator comprising: a housing (2); a spindle drive that is arranged in the housing (2) and includes an axially movable spindle (5) which engages an axially stationarilymounted spindle nut (6) and which has at least one fastening end (8, 9); at least one bearing journal (10, 11) which is arranged in an axially movable manner in the housing (2) and is connected to the at least one fastening end (8, 9) of the spindle (5); and at least one link joint part (3, 4) which is arranged outside the housing (2) and is connected to the at least one bearing journal (10, 11).The at least one bearing journal (10, 11, 110) has a constriction (10v, 11v) that forms a flexible zone (122).

Description

technical field [0001] The invention relates to an actuator according to the preamble of claim 1 and to a use of said actuator. Background technique [0002] From DE 10 2014 206 934 A1 is known a servomotor for a rear axle steering system of a motor vehicle, also referred to as an actuator or simply as a regulator. The actuator is fixed centrally on the axle carrier of the motor vehicle and acts simultaneously on the steering of the two rear wheels. The actuator is therefore part of the steering system and has a spindle drive consisting of a spindle and a spindle nut which is mounted rotatably in the housing and is fixed axially. The spindle nut is driven by an electric motor and causes an axial movement of the spindle either to one side or to the other. The spindle has an approximately centrally arranged threaded section with a moving thread in engagement with the spindle nut and two conical spindle ends which are each connected via a threaded sleeve to a bearing The sle...

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): B62D5/04B62D7/15F16H25/20F16H25/24
CPCB62D5/0424B62D5/0445B62D7/1581F16H2025/2081F16H2025/2037B62D5/0403F16H25/20
Inventor D·格雷厄尔P·F·沃宁
Owner ZF FIEDRICHSHAFEN AG