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Hydrostatic drive for steering system

A technology of steering device and transmission device, which is applied in the direction of transmission device, transmission device parts, steering mechanism, etc.

Inactive Publication Date: 2013-09-25
THYSSENKRUPP PRESTA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Hydrostatic drive for steering system
  • Hydrostatic drive for steering system
  • Hydrostatic drive for steering system

Examples

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Embodiment Construction

[0013] figure 1 Part of a rack 1 is shown, which is provided with a thread 2 . The thread 2 has a thread shape with a trapezoidal cross section. However, other cross-sectional shapes of the threads are also possible, for example rectangular thread shapes.

[0014] Nut 3 engages with thread 2. When the nut 3 is rotated, the toothed rack, which is non-rotatable and displaceable along its longitudinal axis, is moved in the direction of its axis, since the nut is likewise mounted rotatably in the steering housing. It is therefore also a transmission which converts the rotational movement of the nut 3 into an axial movement of the toothed rack 1 .

[0015] The nut 3 generally comprises a first part 4 of relatively small diameter and a second part 5 of relatively large diameter. In the portion 4, four oil pressure regulators 6 are uniformly arranged on the substantially cylindrical outer peripheral surface. In the part 5 there is an outer bearing ring 7 which serves to support ...

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Abstract

The invention relates to a rack-and-pinion power steering system for motor vehicles, with a steering housing, in which a gear rack (1) is mounted such as to be longitudinally displaceable, and with a gear system for converting a rotational movement of a servomotor into a longitudinal movement of the gear rack (1), with which the gear system for converting a rotational movement into a longitudinal movement is a hydrostatic spindle drive with a nut (3).

Description

technical field [0001] The invention relates to a motor vehicle steering system having the features of the preamble of claim 1 . Background technique [0002] Such a steering device is known from the prior art, for example DE 10 2006 053 244 A1. These rack-and-pinion steering devices with electric servo assistance have an elongated tubular steering housing arranged transversely to the direction of travel, in which a rack is mounted displaceably in the longitudinal direction. The rack is in turn connected to the steered wheels of the motor vehicle via tie rods such that linear movement in the direction of the longitudinal axis of the rack causes rotation of the steered wheels. [0003] When using a rotary drive such as an electric motor, a gear must be provided which converts the rotary motion into a linear motion. In this type of prior art, these are screw drives with recirculating ball drives, which are equipped with ball nuts arranged coaxially with the toothed rack. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D3/06B62D5/04B62D5/22F16H25/24F16H57/04
CPCF16H57/0497F16H25/2003B62D5/0445
Inventor 丹尼斯·孔特纳亚历山大·基福留克
Owner THYSSENKRUPP PRESTA AG