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Rack-and-pinion steering gear unit

A technology of rack and pinion, steering gear, applied in mechanical steering gear, mechanical equipment and other directions, can solve the problems of increased manufacturing cost, increased weight of gear housing, etc., and achieve the effect of low manufacturing cost

Active Publication Date: 2015-04-15
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the problems of increased weight and increased manufacturing cost of the gear case are not actually solved.

Method used

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  • Rack-and-pinion steering gear unit
  • Rack-and-pinion steering gear unit
  • Rack-and-pinion steering gear unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040][First example of embodiment]

[0041] figure 1 It is a partially cutaway front view showing key parts of the diverter unit 103a of this example. The steering gear 103a of this example is attached to an unillustrated vehicle frame such as a front side frame. and figure 1 The near front side of the paper plane is the upper side of the vehicle body, and figure 1 The orthogonal inner side of the paper is the lower side of the vehicle body, figure 1 The left-right direction of is equivalent to the vehicle width direction, figure 1 The upper direction corresponds to the rear side of the vehicle body, figure 1 The downward direction of corresponds to the front side of the vehicle body.

[0042] The diverter 103a of this example has figure 1 The pinion side housing 10 on the right side, figure 1 The left side anti-pinion case 20 and the intermediate cylindrical portion 30 connecting these pinion side case 10 and the anti-pinion side case 20 .

[0043] Among the...

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PUM

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Abstract

A lightweight and low cost gear housing for a steering gear unit is achieved. Together with forming an outward-facing flange shaped convex engagement section 43 around the middle section in the axial direction of a rack shaft 40, a gear housing is constructed that comprises a pinion-side housing 10, a non-pinion-side housing 20, and an intermediate cylindrical section 30. As a result, movement of the rack shaft 40 toward the pinion side and the non-pinion side is restricted by both ends of the pinion-side housing 10. Therefore, portions that require large strength can be limited to the pinion-side housing 10 that is short in the width direction of the vehicle, so by reducing the wall thickness of the intermediate cylindrical section 30, or by making the intermediate cylindrical section 30 using a flexible material, it is possible to make the member lightweight, as well as processing become easier, so it becomes possible to reduce the manufacturing cost.

Description

technical field [0001] The present invention relates to a rack and pinion steering unit constituting a steering device for providing a steering angle to steered wheels of an automobile. Background technique [0002] A rack and pinion steering unit is used as a mechanism for converting rotational motion input from a steering wheel into linear motion for providing a steering angle. A steering device having a rack-and-pinion steering unit is described in Japanese Patent Application Laid-Open No. 61-129670, Japanese Patent Laid-Open No. 2005-96591, Japanese Patent Laid-Open No. 2009-56827, etc., and is widely known conventionally. . Figure 14 The structure of an example of a steering device incorporating a rack and pinion steering unit is shown. In this steering device, in order to reduce the operating force of the steering wheel 101 , a steering assist force of a motor 102 attached to a middle portion of a steering column 105 is provided to a steering shaft. And, the action ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D3/12
CPCB62D3/12Y10T74/18096
Inventor 上野星治新井利幸杉原亮太
Owner NSK LTD