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Twist prevention of the rack by complementary shapes

A rack and geometric shape technology, applied in the field of steering systems, can solve the problem of no rack torsion, etc., and achieve the effect of simplifying installation

Inactive Publication Date: 2021-04-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of steering with a ball screw drive is that, unlike steering with a pinion-and-rack arrangement, there is no inherent torsion resistance of the rack

Method used

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  • Twist prevention of the rack by complementary shapes
  • Twist prevention of the rack by complementary shapes
  • Twist prevention of the rack by complementary shapes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 1 Shown is a longitudinal section through a toothed shaft 4 with a housing 3 , wherein an intermediate element 6 is arranged between the housing 3 and the toothed shaft 4 , which implements a connection between the toothed shaft 4 and the housing 3 . Better friction characteristics, thus reducing friction and wear. The shown insert sleeve 10 is alternatively present and associated with the housing 3 . Mounting and / or fixing of the intermediate element 6 on the housing 3 can be facilitated by means of the insert sleeve 10 . Alternatively, the intermediate element 6 can also be firmly connected to the toothed rod 4 , wherein in this case a sliding movement takes place between the housing 3 and / or the housing-fixed insert sleeve 10 and the intermediate element 6 .

[0036] figure 2 A cross section of the toothed shaft 4 is shown, wherein an intermediate element 6 is arranged between the toothed shaft 4 and the housing 3 . In particular, the outer contour of the...

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PUM

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Abstract

A steering system for steering a wheel of a vehicle, comprising a track rod (11) for deflecting the wheel, a rack (4) which, by axial movement, leads to control of the track rod (11), and a housing (3), wherein the rack (4) is at least partially arranged within the housing, wherein the rack (4) has a convex and / or concave cross-sectional portion, wherein the housing-mounted complementary geometry comprises a complementary concave and / or convex shaping, as a result of which a form-fitting connection is produced for realizing the twist prevention.

Description

technical field [0001] The invention relates to a steering system and a vehicle. Background technique [0002] In the prior art, pinion-and-rack arrangements and ball screw drives are known as part of steering systems. [0003] The term "pinion rod" is synonymous with steering rod. The toothed rod is axially displaceable, wherein the toothed rod can wedge into wheels of the vehicle which are articulated via tie rods. [0004] A disadvantage of steering with a ball screw drive is that, unlike steering with a pinion-and-rack arrangement, there is no inherent torsional resistance of the rack. Torsion resistance is necessary for the function of the ball screw drive. If only one ball screw drive is present to apply the steering torque during steering, for example during steer-by-wire, an additional torsional resistance must therefore be provided. [0005] In a typical steering system with a helical gear transmission by means of a pinion-rack arrangement, there is automaticall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/12F16H55/26
CPCB62D5/0448B62D3/126F16C2326/24F16C3/03F16C29/002F16H2019/046F16H55/28
Inventor B·豪瑟尔J·赫尔施J·海因M·布尔克特
Owner ROBERT BOSCH GMBH