STEERING COLUMN DRIVE ASSEMBLY WITH AN ANGULAR END-OF-TRAVEL STOP DEVICE

FR3151827B1Active Publication Date: 2025-07-18ROBERT BOSCH AUTOMOTIVE STEERING VENDOME SAS
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
FR2023008259
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-07-31
Publication Date
2025-07-18
Estimated Expiration
2043-07-31

AI Technical Summary

Technical Problem

In 'Steer by Wire' (SbW) type steering systems, the absence of mechanical connection between the steering wheel and the steering mechanism leads to high average torque requirements and increased friction, necessitating an angular stop device that reduces these issues while maintaining stable friction torque throughout the angular travel.

Method used

A rotational drive assembly with a fixed support element, central steering shaft, and an end-of-travel angular stop device featuring a rotating front ring, fixed rear ring, and intermediate transmission rings, utilizing radial centering means and axial compression springs to minimize friction and absorb shocks, ensuring stable torque throughout the angular travel.

Benefits of technology

The solution reduces the impact of the angular stop device on the average torque applied to the steering wheel, providing a stable friction torque and enhancing comfort by minimizing friction-related noise and shock absorption.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 00000014_0000
    Figure 00000014_0000
  • Figure 00000014_0001
    Figure 00000014_0001
  • Figure 00000015_0000
    Figure 00000015_0000
Patent Text Reader

Abstract

The present invention relates to a rotational drive assembly for a steering column comprising a fixed support element (16), a steering shaft (14) and an end-of-travel angular stop device which comprises a rotating front ring (26) linked in rotation to the steering shaft, a fixed rear angular stop ring (28) and at least one intermediate transmission ring (30i) interposed axially between the rotating front ring (26) and the fixed rear ring (28), and in which the rotating front ring (26), the at least one intermediate ring (30i) and the fixed rear ring (28) comprise means for mutual rotational drive, characterized in that the rotating front ring (26) and the fixed rear ring (28) each comprise means for radially centering the intermediate ring (30i) which is axially traversed with radial play by the central steering shaft (14). Figure for abstract: 3
Need to check novelty before this filing date? Find Prior Art