Position adjusting-type steering device

A steering device and adjustable technology, applied in steering control, steering mechanism, transportation and packaging, etc., can solve problems such as harsh and abnormal noise, and achieve the effect of suppressing abnormal noise

Active Publication Date: 2016-02-24
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the case of such a position-adjustable steering device, in order to adjust the position of the steering wheel 1, when the adjustment handle 34 is rotated in a predetermined direction (unlocked), there is a possibility that the two stepped portions 39, 40 may strongly move against each other. Harsh abnormal noise (metal contact noise) caused by contact (collision)

Method used

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  • Position adjusting-type steering device
  • Position adjusting-type steering device
  • Position adjusting-type steering device

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0119] Figure 1-7The first embodiment of the present invention is shown. In addition, this embodiment is characterized in that an abnormal noise suppression structure (structure including the sub-arm 49, the receiving side member 52, and the buffer member 54) is added for suppressing: When the axial dimension of the cam device 31a is reduced) and rotates, the stepped portions 39, 40 of the two cam surfaces 32, 33 on the driving side and the driven side (refer to Figure 12 ) harsh abnormal noise (metal contact sound) produced by strong contact (collision) with each other. The structure and function of other parts, except for one part, are the same as the above-mentioned Figure 10-12 The shown conventional structures are basically the same, therefore, overlapping illustrations and descriptions are omitted or simplified, and the following description will focus on the characteristic parts of this embodiment and the parts different from the above-mentioned conventional struct...

no. 2 Embodiment approach

[0137] Figure 8 The second embodiment of the present invention is shown. In this embodiment, when adjusting handle 34a (for example, refer to Figure 4 , 5 ) is turned downward in the unlocked state, the front end portion 58 of the sub-arm 49 comes into contact with the flat portion 57a ​​of the receiving side member 52a in a state where a preload is applied due to the elastic deformation of the sub-arm 49 . Thereby, in the unlocked state, it is possible to reliably prevent the adjustment lever 34a from rattling in the width direction.

[0138] Also in this embodiment, since the flat portion 57 is provided with the stroke s behind the flat surface 59a of the sub-arm 49 that is in contact with the buffer member 54, the inclination can be adjusted smoothly.

[0139] The other configurations and functions are the same as those of the above-mentioned first embodiment, and therefore redundant illustrations and descriptions are omitted.

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Abstract

In the present invention, fixed to a base end part of an adjustment lever (34a) is a sub-arm (49) that rotates with the adjustment lever (34a). A reception-side member (52) is fixed to the outer surface of one support plate part (23a) of a support bracket (22a), and a buffer member (54) made of an elastic material is fixed to the reception-side member (52). In a case where the adjustment lever (34a) is rotated in a specific direction, prior to the step parts of both driving side and driven side cam surfaces (32, 33) making contact with each other, the tip end part of the sub-arm (49) makes contact with the buffer member (54). Due to this configuration, in a case where the adjustment lever (34a) is caused to rotate in a specific direction (the direction in which the axial direction dimensions of a cam device (31a) are reduced) so as to adjust the position of a steering wheel, the generation of unpleasant noise that accompanies the coming into contact of the step parts present on both the driving side and driven side cam surfaces (32, 33) can be prevented.

Description

technical field [0001] The present invention relates to an improvement of a position-adjustable steering device having a function of adjusting at least one of a front-rear position and a vertical position of a steering wheel according to a driver's physique and driving posture. Background technique [0002] The steering device for automobiles is constituted as Figure 9 As shown, the rotation of the steering wheel 1 is transmitted to the input shaft 3 of the steering gear unit 2, and the left and right pair of tie rods 4, 4 are pushed and pulled along with the rotation of the input shaft 3, and the steering angle is given to the front wheels. The steering wheel 1 is supported and fixed to a rear end portion of a steering shaft 5 , and the steering shaft 5 is rotatably supported by the steering column 6 in a state of being inserted in the axial direction through a cylindrical steering column 6 . The front end of the steering shaft 5 is connected to the rear end of the interme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/184B62D1/189
CPCB62D1/184B62D1/185B62D1/187
Inventor 寺泽大辅渡边将司郎
Owner NSK LTD
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