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Device for pressing a gear rack against a pinion

A pinion and rack technology, applied in the direction of belts/chains/gears, hoisting devices, components with teeth, etc., can solve the problem of the steering wheel being stuck by the pressing device and troublesome

Active Publication Date: 2015-05-20
TRW AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to keep the pressing device substantially free of play, two separate wedges are provided, but the assembly of the device (in particular the radial orientation and centering of the wedges with respect to the pressure piece) and via the two inclined Precise loading of the pressure part by the wedge surfaces in the axial direction proved to be laborious
An eccentric or not exactly axially oriented loading of the pressure piece can lead to jamming of the pressure device and thus to an undesired "jump" of the steering wheel during steering

Method used

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  • Device for pressing a gear rack against a pinion
  • Device for pressing a gear rack against a pinion
  • Device for pressing a gear rack against a pinion

Examples

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Embodiment Construction

[0030] figure 1 and 2 Shown is a part of a rack-type steering mechanism 10 for a motor vehicle, which has a housing 12, a toothed rack 14 mounted longitudinally displaceably in the housing 12, a The pinion 16 in and a pressing device 18 load the rack 14 to the pinion 16 . Here, the hold-down device 18 according to figure 1 shown in assembled state and according to figure 2 Shown in use.

[0031] The housing 12 of the pressing device 18 is in the present case formed in one piece with the housing 12 of the rack steering 10 . Alternatively, however, the pressing device 18 can also have a separate housing which is attached to the housing of the rack steering 10 .

[0032] The device 18 for pressing the rack 14 onto the pinion 16 comprises a housing 12, a pressure element 20 guided movably in the housing 12 along the pressing axis A, a A bearing element 22 on the housing 12 and a plurality of radially loaded wedges 24 , which are respectively supported on the pressure part 2...

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PUM

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Abstract

The invention relates to a device (18) for pressing a gear rack (14) against a pinion (16), comprising a housing (12), a pressure piece (20), which is movably guided in the housing (12) along a pressing axis (X), a bearing element (22), which can be axially fixed on the housing (12), and radially loaded wedge bodies (24), which are each supported on the pressure piece (20) and on the bearing element (22) and act on the pressure piece (20) axially away from the bearing element (22), wherein the pressure piece (20) is designed as a frustum of a cone on a face facing the bearing element (22) and / or the bearing element (22) is designed as a frustum of a cone on a face facing the pressure piece (20), and wherein at least three wedge bodies (24) evenly distributed in the circumferential direction (26) are provided.

Description

technical field [0001] The invention relates to a device for pressing a rack on a pinion, which has a housing, a pressure element guided movably in the housing along a pressing axis, an axially movable a support element fastened to the housing and a plurality of radially loaded wedges which are respectively supported on the pressure part and on the support element and which act on the pressure part axially away from the support element . Background technique [0002] Various embodiments of rack steering systems for vehicles are known from the prior art. Based on the principle of operation of rack-and-pinion steering, all rack-and-pinion steering gears have a steering gear with a rack and a pinion, wherein the pinion meshes with the gearing area of ​​the rack. Here, the rotational force exerted by the steering wheel on the steering shaft and the pinion is converted into a rack normal force and transmitted to the steerable wheels of the vehicle. At present, the rack-type st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/12F16H55/28
CPCB62D3/123F16H55/283Y10T74/19623F16H2055/281
Inventor M·林格曼
Owner TRW AUTOMOTIVE GMBH
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