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Vehicle steering system

A steering device and vehicle technology, which is applied to steering mechanisms, vehicle components, transmission parts, etc., can solve problems such as increased gaps, and achieve the effect of preventing noise

Inactive Publication Date: 2008-10-08
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the wear of the teeth of the intermediate gear and changes over time, the gap may become larger

Method used

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  • Vehicle steering system
  • Vehicle steering system
  • Vehicle steering system

Examples

Experimental program
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Embodiment Construction

[0016] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[0017] figure 1 It is a schematic diagram of a schematic configuration of an electric power steering device as a vehicle steering device according to an embodiment of the present invention.

[0018] refer to figure 1 The electric steering device 1 has: a steering wheel 2 as a steering member that is steered (rotated) by a driver, a steering mechanism 4 that turns a steering wheel 3 in conjunction with the steering of the steering wheel 2, and a steering wheel 2 and a steering mechanism 4 that are connected. , the steering shaft 5 and the intermediate shaft 6 that transmit the rotation of the steering wheel 2 to the steering mechanism 4 .

[0019] The steering shaft 5 passes through the cylindrical steering column 7 and is rotatably supported in the steering column 7 . One end of the steering shaft 5 is connected to the steering wheel 2 . In addition, th...

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PUM

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Abstract

A motor vehicle steering system (1) includes a transmission mechanism (26) for transmitting a power of an electric motor (25) to a steering mechanism (4). The transmission mechanism (26) includes an intermediate gear (32) meshed with a driving gear (31) and a driven gear (33). The intermediate gear (32) includes: an annular teeth forming portion (47) rotatably supported by an outer periphery (37a) of a support shaft (36) via a rolling bearing (63), the support shaft (36) supported by a housing (23); and an annular elastic member (46) interposed between an inner periphery (47a) of the teeth forming portion (47) and an outer ring (63a) of the rolling bearing (63) and interconnecting the teeth forming portion (47) and the outer ring (63a) in a manner permitting torque transmission. An axis (P4) of the support shaft (36) and an axis (P2) of the teeth forming portion (47) are mutually offset, whereby an inner periphery (48a) of the elastic member (46) is located eccentrically to an outer periphery (48b) thereof. A pre-load to press the teeth forming portion (47) against the driving gear (31) and the driven gear (33) is provided by an elastic restorative force of the elastic member (46).

Description

technical field [0001] The present invention relates to a vehicle steering device. Background technique [0002] As a steering device for a vehicle, there is a so-called rack assist type electric steering device. This type of electric steering device includes an electric motor for assisting steering, a speed reducer, and a ball screw mechanism. The ball screw mechanism has: a ball screw shaft and a ball nut. The ball screw shaft is connected to a gear shaft constituting a part of the steering mechanism. The output of the motor is transmitted to the gear shaft through the reduction gear and the ball screw mechanism (see, for example, JP-A-5-262243). [0003] In Japanese Unexamined Patent Publication No. 5-262243, the speed reducer has: a driving gear driven by a motor, a driven gear that can be rotated synchronously with the ball nut, and a gear that meshes with both gears and is disposed between the driving gear and the driven gear. intermediate gear. [0004] Appropria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/0424F16H2057/126
Inventor 黑川贵则
Owner JTEKT CORP