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1. (WO2018087112) METHOD FOR THE SIMPLIFIED ASSEMBLY OF A RACK-AND-PINION STEERING BOX OF A RACK-AND-PINION STEERING SYSTEM

Pub. No.:    WO/2018/087112    International Application No.:    PCT/EP2017/078536
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Nov 09 00:59:59 CET 2017
IPC: B62D 5/04
B62D 3/12
Applicants: THYSSENKRUPP PRESTA AG
THYSSENKRUPP AG
Inventors: STECK, Philippe
BAUMGARTNER, Patrick
Title: METHOD FOR THE SIMPLIFIED ASSEMBLY OF A RACK-AND-PINION STEERING BOX OF A RACK-AND-PINION STEERING SYSTEM
Abstract:
The invention relates to a method for assembling a rack-and-pinion steering box of a rack-and-pinion steering system having a pinion shaft (13) that is connected to a steering shaft (2) and that has a steering pinion (8) which engages with a steering rack (5) mounted to move along a longitudinal axis in a housing (10), in order to pivot steerable wheels, wherein the entire assembly is accommodated in a steering box housing (10) and the rack-and-pinion steering system has an electric motor (12) which drives the pinion shaft (13) by means of a reduction gear (11). The pinion shaft (13) has a narrow section (17) between the steering pinion (8) and the end (13") furthest away from the steering shaft, the diameter of said narrow section being less than that of the steering pinion (8). The following method steps are provided: introducing the pinion shaft (13) into a housing opening, provided for this purpose, of the steering box housing (10) sufficiently far that the region of the narrow section (17) of the pinion shaft (13) is level with the steering rack (5) to be inserted; introducing the steering rack (5) into the housing opening, provided for this purpose, of the steering box housing (10), the steering rack (5) being pushed past the narrow section (17) of the pinion shaft (13) until an end position is reached; moving the pinion shaft (13) further inside the steering box housing (10) until an end position is reached, such that a toothing region (9) of the steering rack (5) engages with the toothing of the steering pinion (8).