Position adjustment device for electric steering wheel

Abstract

In order to improve the support rigidity of steering column device parts, a position adjustment device for an electric steering wheel according to this invention is configured such that a steering shaft (2b) and a steering column (5b) are non-extendable, and the members thereof are capable of displacement in a forward and backward direction. Retaining holes (22a) are formed in at least two separate sites at the front and the rear of the upper side of a column holder (31) that holds the steering column (5b), and a slide plate (35), an elastic member (37), and a lid body (38) are provided in each retaining hole (22a). The elastic member (37) causes the slide plate (35) to press the outer circumferential surface of the steering column (5b).

Description

technical field [0001] The present invention relates to an electric position adjustment device of a steering wheel, more specifically, relates to a device that uses an electric motor as a driving source to adjust the front and rear positions and up and down positions of the steering wheel. Background technique [0002] Electric position adjustment devices for steering wheels are known in various designs, some of which are already used in steering devices for motor vehicles. Figure 21 A first example of the conventional configuration described in JP 2010-116042 A is shown. The steering shaft 2 to which the steering wheel 1 is fixed is composed of a cylindrical outer shaft 3 and a round rod-shaped inner shaft 4 inserted into the outer shaft 3 so as to be slidable in the axial direction and capable of transmitting rotational force. More specifically, the inner peripheral surface of the outer shaft 3 from the middle to the front end is spline-fitted to the outer peripheral surf...

AI Technical Summary

Problems solved by technology

However, in this mechanism, if the pushing force on the outer peripheral surface of the steering inner column 7b of the pad 26 is increased to an amount that can prevent sloshing, the frictional force when the steering outer column 6b and the steering inner column 7b slide will become smaller. Therefore, there is a problem that the driving load of motors such as electric motors increases, and the operating noise becomes louder.

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