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Servo transmission mechanism and steering system for motor vehicle

A technology of servo transmission and steering system, which is applied in the direction of motor vehicles, mechanical steering gears, electric steering mechanisms, etc.

Pending Publication Date: 2021-06-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Furthermore, in order to secure the bearing axially between the worm shaft and the hub, a certain preload must be produced in order to prevent the bearing inner ring of the bearing from rotating on the bearing seat during operation, which would lead to functional and / or acoustic The problem

Method used

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  • Servo transmission mechanism and steering system for motor vehicle
  • Servo transmission mechanism and steering system for motor vehicle
  • Servo transmission mechanism and steering system for motor vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] figure 1 A longitudinal sectional view of a partial section of a servo drive for a steering system of a motor vehicle according to a preferred embodiment of the invention is shown.

[0037] The servo drive 10 for the steering system 1 of a motor vehicle has a worm shaft 12 , a roller bearing 14 , a hub 16 and an electric motor 18 operatively connected to the hub 16 . Other components of servo drive 10 which are not essential for the invention are therefore not shown.

[0038] The rolling bearing 14 serves to support a worm shaft 12 , wherein the worm shaft 12 is inserted, in particular with a transition fit, into a bearing inner ring 14 a of the rolling bearing 14 .

[0039] Furthermore, the hub 16 is pressed onto the worm shaft 12 . The hub 16 is designed to transmit the torque generated by the electric motor 18 of the servo drive to the worm shaft 12 .

[0040] In this embodiment, the bearing inner ring 14a of the rolling bearing 14 can be clamped at a predetermine...

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PUM

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Abstract

The invention relates to a servo drive (10) for a steering system (1) of a motor vehicle, comprising a worm shaft (12); a rolling bearing (14) for supporting the worm shaft (12), wherein the worm shaft (12) is inserted into a bearing inner ring (14a) of the rolling bearing (14), in particular in a transition fit; a hub (16) pressed onto a worm shaft (12), the hub (16) being designed to transmit a torque generated by an electric motor (18) of the servo drive (10) to the worm shaft (12), wherein the bearing inner ring (14a) of the rolling bearing (14) can be clamped between the worm shaft (12) and the hub (16) by means of at least one deformation element (20a, 20b) arranged on the bearing inner ring (14a) and / or on a component of the servo drive (10) arranged axially adjacent to the bearing inner ring (14a) with a predefined preload (F). The invention further relates to a steering system (1) for a motor vehicle.

Description

technical field [0001] The invention relates to a servo drive for a steering system of a motor vehicle. Furthermore, the invention relates to a steering system for a motor vehicle. Background technique [0002] Conventional servo drives for steering systems have an electric motor which transmits the generated torque to the worm shaft by means of a hub. Usually, a bearing, for example a roller bearing, for axially supporting the worm shaft is arranged between the hub and the worm shaft. [0003] In this case, the hub is pressed onto the outer circumference of the worm shaft in the region of the axial end section of the worm shaft, wherein the torque transmission from the electric machine to the worm shaft takes place via the toothed connection of the hub to the worm shaft. [0004] Furthermore, in order to secure the bearing axially between the worm shaft and the hub, a certain preload must be produced in order to prevent the bearing inner ring of the bearing from rotating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/04B62D5/04F16H57/021F16C35/06
CPCB62D3/04B62D5/04F16H57/021F16C35/06F16H2057/0213F16H2057/02082F16C2229/00F16C2326/02F16C2226/12F16H1/16B62D5/0409F16C2380/27F16C2326/24F16C19/06F16C2226/52F16C35/063
Inventor B·沃尔普P·阿诺尔德
Owner ROBERT BOSCH GMBH