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Telescopic adjusting electric power steering apparatus

A technology of electric steering and telescopic adjustment, which is applied to the steering column, steering control, steering mechanism, etc., and can solve problems such as failure, inability to absorb impact energy stably, and increased motor load

Inactive Publication Date: 2008-04-02
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a relative rotational force for relatively rotating both the outer cover 1 and the outer cover inner cover 2 acts between the outer cover cover 1 and the outer cover inner cover 2, there is an unsolvable problem that the connecting rod 7 in the circumferential direction Twisted, tooth-to-tooth meshing of the reduction mechanism for transmitting the driving force of the motor 5 to the connecting rod through the worm gear structure will fail, and the load required for the motor to stretch and shrink the outer / inner column increases
[0004] Moreover, there is an unsolvable problem that since the connecting rod 7 is twisted, the contraction load of the breaking pin 8 becomes not constant, so that the impact energy cannot be stably absorbed

Method used

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  • Telescopic adjusting electric power steering apparatus
  • Telescopic adjusting electric power steering apparatus
  • Telescopic adjusting electric power steering apparatus

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Embodiment Construction

[0051] Embodiments of the present invention will be described below based on the drawings.

[0052] FIG. 1 is a view showing the entire construction of a telescopically adjustable electric power steering device of a vehicle assembly of the present invention. FIG. 2 is a view showing the entire construction of a first embodiment of the telescopically adjustable electric power steering apparatus of the present invention. FIG. 3 is a sectional view along line III-III of FIG. 2 . FIG. 4 is a sectional view along line IV-IV of FIG. 3 . Fig. 5 is a sectional view of the main part of the present invention. FIG. 6 is a cross-sectional view along line VI-VI of FIG. 5 . FIG. 7 is a cross-sectional view along line VII-VII of FIG. 5 .

[0053] In FIG. 1 , a steering column device 10 has a steering column 12 for rotatably supporting a steering shaft 11 . A steering wheel 13 is attached to the rear end of the steering shaft 11 . The intermediate shaft 15 is connected to the front end ...

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PUM

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Abstract

A telescopic adjusting electric power steering apparatus has a steering column 12 having an outer column 12 a and an inner column 12 b connected so as to be relatively extended and contracted, and rotatably supporting a steering shaft attaching a steering wheel 13 thereto; and an electric actuator 50 having one end portion attached to the outer column 12 a and the other end portion attached to the inner column 12 b, and extending and contracting the outer column 12 a and the inner column 12 b; wherein the electric actuator 50 has a rotation obstructing member 59 for obstructing relative rotation of the outer column 12 a and the inner column 12 b.

Description

technical field [0001] The present invention relates to a telescopically adjustable electric steering device, which has a steering column and an electric actuator, wherein the steering column has an outer column and an inner column connected so as to be relatively stretchable and retractable, and is rotatably supported and connected to The steering shaft of the steering wheel, the electric actuator has one end connected to the outer column and the other end connected to the inner column, and stretches and contracts the outer and inner columns. Background technique [0002] There has been proposed a telescopic electric steering device for operating a shaft arranged on an axis different from the shaft of a steering column driven by a motor in the axial direction, and the device can be extended and shortened connected to axis column. For example, the device shown in Fig. 19 is such a telescopic electric power steering device (see Japanese Patent Unexamined Publication JP-A-200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/19
CPCB62D1/181B62D1/195
Inventor 关井義幸力石一穗立脇修
Owner NSK LTD
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