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Multi-degree-of-freedom parallel mechanism vibration damping platform used for motor vehicle seat

A technology for motor vehicles and degrees of freedom, applied in vehicle seats, seat suspension devices, special positions of vehicles, etc. Isotropic, simple and compact structure, light weight effect

Active Publication Date: 2016-08-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing damping technologies for motor vehicles mainly include: using sponge pads for damping, and installing vertical seats, springs, and dampers to slow down the vibration of the seat. The main damping direction of this technology is the vertical direction, while The vibration source generated by the vehicle is multi-directional, and the vibration reduction effect is relatively poor, and the multi-directional vibration reduction of purely mechanical structures is complicated to achieve multi-directional vibration reduction in a limited space.

Method used

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  • Multi-degree-of-freedom parallel mechanism vibration damping platform used for motor vehicle seat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the multi-degree-of-freedom parallel mechanism vibration damping platform for motor vehicle seats includes a fixed platform 4 and a bearing platform 3 above the fixed platform 4, the bearing platform 3 is connected to the motor vehicle seat, and the connection between the bearing platform 3 and the fixed platform 4 The three branches are connected by three branches with the same structure, and the three branches are evenly distributed at 120° around the vertical centerline of the fixed platform 4. The three branches all include springs 7, dampers 8, moving pairs, cylindrical pairs and rotating pairs;

[0017] The fixed platform 4 is provided with a bracket 5, and the bracket 5 is equipped with a moving pair. The moving pair includes a sliding shaft 10 and a slider 6. The sliding shaft 10 is fixed on the bracket 5, and the sliding block 6 slides axially on the sliding shaft 10. A spring 7 and a damper 8 are installed between 6 and the bottom en...

Embodiment 2

[0022] On the basis of Embodiment 1, the damper 8 is a controllable passive electromagnetic damper, the electromagnetic damper is connected to the current regulation unit and the force sensor, and the current regulation unit and the force sensor are connected to the controller.

[0023] The control system can be turned on or off selectively. When the control system is turned off, the electromagnetic damper itself has a certain damping characteristic and works in a passive damping state. When the control system is turned on, the electromagnetic damper detected by the force sensor The data is transmitted to the controller, and the controller determines the magnitude of the current input to the electromagnetic damper according to the data simulation calculation, thereby changing the damping value, and optimizing the vibration reduction effect on the premise of avoiding the resonance frequency to the human body.

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Abstract

The invention relates to a multi-degree-of-freedom parallel mechanism vibration damping platform used for a motor vehicle seat and belongs to the technical field of mechanical vibration damping devices. The multi-degree-of-freedom parallel mechanism vibration damping platform comprises a fixed platform and a bearing platform fixed above the fixed platform, wherein the motor vehicle seat is connected to the bearing platform; the bearing platform is connected with the fixed platform by virtue of three branches with the same structure; and the three branches are uniformly distributed in an angle of 120 degrees around the vertical central line of the fixed platform and comprise springs, dampers, moving pairs, cylinder pairs and rotating pairs. By adopting the platform, space multi-degree-of-freedom seat vibration damping is realized, the influence of outside vibration on a driver and passengers is reduced, and the comfort and safety are improved.

Description

technical field [0001] The invention relates to a multi-degree-of-freedom parallel mechanism vibration damping platform used for motor vehicle seats, and belongs to the technical field of mechanical vibration damping devices. Background technique [0002] With the continuous development of science and technology, human beings are increasingly dependent on motor vehicles, and the requirements for the comfort of motor vehicles are also getting higher and higher. Heavy vehicles, passenger cars, commercial vehicles, etc. have serious vibration problems when driving under poor road conditions. Affect the comfort of drivers and passengers, and easy to fatigue. The vibration reduction technologies of existing motor vehicles mainly include: use sponge pads for vibration reduction, and slow down the vibration of seats by installing vertical seats, springs, and dampers. The main vibration reduction direction of this technology is the vertical direction, while The vibration source gen...

Claims

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Application Information

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IPC IPC(8): B60N2/50F16F15/04
CPCB60N2/502F16F15/04
Inventor 王晓君郭美卿戴震高志鹏
Owner TAIYUAN UNIV OF TECH
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