Rack-and-pinion gear mechanism

Details Rack-and-pinion gear mechanism Rack-and-pinion gear mechanism

2002-12-20

2009-11-10

Joyce, William C (Department: 3656)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S409000, C029S525120, C411S360000, C411S930000

Reexamination Certificate

active

07614317

ABSTRACT:
The invention relates to a rack-and-pinion gear mechanism (1), for example for use in a steering mechanism of a motor vehicle, and to a method for the production of the rack-and-pinion gear mechanism (1). The mechanism comprises a housing (101), in which a pinion shaft (102) is mounted so as to be rotatable about an axis (103). The pinion shaft (102) is connected to a rack (110) which is mounted in the housing (101) in such a way as to be longitudinally displaceable. A counter-pressure device (102, 123) compensates for reaction forces between the pinion shaft (102) and the rack (110), having a thrust piece (102) and an adjusting/closing nut (25), between which a spring (123) is supported. The adjusting/closing nut (25) is composed of a material which has a softening/melting point such that the adjusting/closing nut (25) can be softened and/or melted locally while installed in the housing (101) without damaging the housing (101). Softened and/or melted and resolidified partial areas of the adjusting/closing nut (25) are in form-locking engagement with the housing (101).

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Hoechst Technische Kunststoffe B.3.7 Ultraschallschweiben und-fugen von Formteilen aus technischen Kunststoffen (Hoeshst Technical Plastics B3.7 Ultrasound welding and jointing of moulded parts from technical plastics, 6t ed. Jan. 1990, p. 20, Chapter 7.3, Closing).
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