Seat suspension utilizing nonlinear stiffness design

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United States of America Patent

PATENT NO 12122272
APP PUB NO 20240092239A1
SERIAL NO

17931244

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Abstract

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A suspension system with vibration isolation is described. The system can incorporate a kinematic structure comprising pairs of X-shaped supporting structures connected in parallel. The kinematic structure limits motion in the vertical direction to a single degree of freedom. Tensioning/damping of the kinematic structure orthogonally to the vertical motion limits horizontal motion of the kinematic structure with a corresponding constraint of motion of in the vertical direction. The tensioning/damping imparts passive nonlinear stiffness and nonlinear damping of the vibrational energies across the suspension system. A tuning mechanism can be incorporated enabling tension/damping adjustment to accommodate different heights and payloads. The system can provide vibration isolation at low frequencies and over a wide range of operational frequencies. The suspension system has tunable ultra-low resonant frequencies with anti-resonance characteristics. In an example application, the suspension system can be incorporated into a seat for applications experiencing whole body vibrations.

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Patent Owner(s)

Patent OwnerAddress
CITY UNIVERSITY OF HONG KONG4/F ACADEMIC 2 83 TAT CHEE AVENUE KOWLOON

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jing, Xingjian Shatin, HK 10 7

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