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Rack bar and rack bar manufacturing method

A manufacturing method, rack bar technology, applied to components with teeth, transportation and packaging, belts/chains/gears, etc., can solve the problem of limiting the weight of double-pinion rack bars, etc., and achieve the effect of improving precision

Inactive Publication Date: 2018-06-08
NETUREN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This limits the lightweight of double rack and pinion rods

Method used

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  • Rack bar and rack bar manufacturing method
  • Rack bar and rack bar manufacturing method
  • Rack bar and rack bar manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 The figure shows a steering device 1 according to an embodiment of the invention.

[0014] The steering device 1 has a rack housing 2 and a rack bar 10 accommodated in the rack housing 2 so as to be slidable in the axial direction.

[0015] The tie rod 3 is coupled to both end portions of the rack bar 10 through coupling portions, and by the movement of the rack bar 10 , the wheels are steered by the tie rod 3 and the steering mechanism to which the tie rod 3 is coupled.

[0016] At one axial end portion of the rack housing 2, a steering gear case 4 is provided. Inside the steering gear box 4, a steering gear (not shown) formed on an input shaft 5 coupled to a steering shaft is provided. At the other axial end portion of the rack housing 2, an auxiliary gear case 6 is provided. Inside the auxiliary gear box 6, an auxiliary gear (not shown) driven by the motor 7 of the auxiliary mechanism is provided.

[0017] The rack bar 10 has a first toothing 20 and a se...

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PUM

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Abstract

A rack bar (10) includes a first bar member (11) having a first toothed portion (20), a second bar member (12) having a second toothed portion (21), and a joint member coaxially coupling the first andsecond bar members. The joint member (13) has a first joining portion (23) and a second joining portion (25) that are provided coaxially with each other. Each of the first and second joining portionshas a hollow cylindrical shape. An inner peripheral surface of the first joining portion and an outer peripheral surface of an end portion (22) of the first bar member are joined to each other with an adhesive. An inner peripheral surface of the second joining portion and an outer peripheral surface of an end portion (24) of the second bar member are joined to each other with an adhesive.

Description

technical field [0001] The present invention relates to a rack bar and a method of manufacturing the rack bar. Background technique [0002] Some vehicle steering devices of automobiles etc. have a double rack and pinion bar which has rack teeth at two positions, one teeth meshes with the steering gear of the steering shaft and the other teeth meshes with the auxiliary mechanism The auxiliary gear meshes. Depending on the positional relationship between the steering shaft and the auxiliary mechanism in the vehicle, the teeth at two positions of the double-pinion rack bar can be designed to have an angular difference around the center line of the rack bar. [0003] According to the manufacturing method of such a double rack and pinion bar in the prior art, in order to improve the accuracy of the angle difference between the teeth at two positions, between the first rod part having the first tooth part and the second rod part having the second tooth part coaxially arranged, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/76B62D3/12F16H55/26
CPCB62D3/126F16H55/26B21K1/76B62D3/12B29C65/48B29C66/5221B29C66/721B29K2307/04B29L2031/30F16H55/06
Inventor 稻垣孝一松本涉
Owner NETUREN CO LTD