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Damping structure of electric steering shaft

A technology of electric steering and rotation axis, which is applied in the direction of steering mechanism, steering rod, spring/shock absorber, etc. It can solve the problems of short service life, aging deformation of rubber ring, heat resistance, and decline in shock absorption effect, and achieve improved use Life, reduce vibration wear, reduce the effect of vibration transmission

Active Publication Date: 2021-10-22
杭州琳达汽配有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned related technologies, the inventor believes that the rubber ring is prone to aging deformation and has poor heat resistance. After long-term use, the shock-absorbing effect decreases and has the defect of short service life.

Method used

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  • Damping structure of electric steering shaft
  • Damping structure of electric steering shaft
  • Damping structure of electric steering shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The embodiment of the present application discloses a damping structure of an electric steering shaft. refer to figure 2 , the damping structure of the electric steering shaft includes a central column 2 and a sliding sleeve 3 slidably arranged on the central column 2, the central column 2 is rotationally connected with the tie rod 1, the sliding sleeve 3 is rotationally connected with the hub bracket 12, and the central column 2 The rotation axis of the tie rod 1 is parallel to the rotation axis of the sliding sleeve 3 and the hub bracket 12 , and both rotation axes are parallel to the sliding track of the sliding sleeve 3 . When the road surface is bumpy, the hub bracket 12 fluctuates up and down relative to the vehicle body. At this time, the sliding sleeve 3 and the central column 2 slide relative to each other along the height direction, and the transmission of vibration is alleviated by sliding, thereby playing a shock absorbing effect.

[0044] refer to image...

Embodiment 2

[0054] refer to Image 6 , a damping structure for an electric steering shaft. The difference between it and Embodiment 1 is that the end of the central column 2 away from the sliding sleeve 3 is fixed with a cylindrical housing 4, and the housing 4 and the vehicle body are fixed by bolts to This avoids changes in the height difference between the accommodation cylinder 4 and the tie rod 1 . combine Figure 7 As shown, a piston 44 made of rubber is provided slidingly along the height direction in the storage cylinder 4, and the piston 44 divides the space in the storage cylinder 4 into a buffer chamber 42 and a buffer chamber 41, and the buffer chamber 42 and the buffer chamber 41 Both are passed with gas or liquid, preferably an inert gas such as nitrogen in this embodiment.

[0055] One end of the housing tube 4 near the sliding sleeve 3 is provided with a circular sliding hole, and a buffer rod 43 is inserted through the sliding hole along the sliding direction of the sli...

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PUM

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Abstract

The invention relates to a damping structure of an electric steering shaft, which comprises a center column rotatably connected with one end of a transverse pull rod and a sliding sleeve vertically connected with the center column in a sliding mode; the sliding sleeve is rotatably connected with a hub bracket; the rotating axis of the center column and the rotating axis of the transverse pull rod are parallel to the rotating axis of the sliding sleeve and the rotating axis of the hub bracket; and the two rotating axes are parallel to the sliding track of the sliding sleeve. The damping structure of the electric steering shaft provided by the invention has the effects of protecting transmission structures such as racks, achieving the damping effect and prolonging the service life of the electric steering shaft.

Description

technical field [0001] The present application relates to the field of automobile steering shafts, in particular to a shock absorbing structure of an electric steering shaft. Background technique [0002] The electric steering shaft is a crucial part of the electric power steering system (EPS) of a car. Generally, the sensor detects the rotation angle and torque of the steering wheel driven by the driver, as well as the current speed of the vehicle, and then the electronic control unit (ECU) based on the The rotation angle, torque and vehicle speed of the steering wheel distribute power assistance, and then the electronic control unit controls the output of the motor to control the steering of the car hub, thereby reducing the labor intensity of the driver. [0003] The Chinese invention whose authorization notification number is CN105987779B discloses a magnetostrictive torque sensor and an electric power steering device. The electric power steering device has a steering w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/02F16F15/023F16F15/04F16F15/06B62D7/16B62D15/02
CPCF16F15/02F16F15/022F16F15/023F16F15/0232F16F15/046F16F15/06B62D7/16B62D15/024F16F2222/12F16F2222/126F16F2238/026
Inventor 王虎华国祥瞿国仁
Owner 杭州琳达汽配有限公司