A body weight adjustment mechanism for automatic adjustment to a balanced point is provided to improve vibration absorption characteristics and impact absorption characteristics. A torsion angle of a lower frame-side torsion bar (141c) when an upper frame (200) is at a balanced point (balanced point torsion angle) is found in advance, a torsion angle of the lower frame-side torsion bar (141c) in a state in which a person is seated is detected, the detected torsion angle is compared with the aforesaid balanced point torsion angle, a control signal is sent to an elastic force adjusting unit, and torsion angles of upper frame-side torsion bars (141a, 141b) are adjusted so that the torsion angle of the lower frame-side torsion bar (141c) becomes equal to the balanced point torsion angle. It is possible to automatically set the upper frame (200) to an appropriate position in an initial state and a static state in which a person is seated. Further, since it is possible to constantly guide the upper frame (200) to the balanced point during traveling, vibration absorption characteristics and impact absorption characteristics are improved.
SEAT SUSPENSION MECHANISM
SITZAUFHÄNGUNGSMECHANISMUS
MÉCANISME DE SUSPENSION DE SIÈGE
2024-02-21
Patent
Electronic Resource
English