Title:
SEAT SUSPENSION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2021/079943
Kind Code:
A1
Abstract:
The present invention is provided with a body weight adjustment mechanism for automatically adjusting to an equilibrium point and improves vibration absorption characteristics and impact absorption characteristics. The present invention: acquires in advance a predetermined torsion angle (equilibrium point torsion angle) of a lower-frame-side torsion bar (141c) when being positioned at an equilibrium point; detects a torsion angle of the lower-frame-side torsion bar (141c) in a state where a person is seated; compares the detected torsion angle with the equilibrium point torsion angle; transmits a control signal to an elastic power adjustment unit; and adjusts torsion angles of upper-frame-side torsion bars (141a,141b) so as to match the equilibrium point torsion angle. An upper frame (200) can be automatically set to an appropriate position in a standstill state and in an initial state in which a person is seated. In addition, since guiding to the equilibrium point is always possible even during traveling, vibration absorption characteristics and impact absorption characteristics are improved.
Inventors:
FUJITA ETSUNORI (JP)
MAKITA SOICHI (JP)
MAEDA SHINICHIRO (JP)
MASUMURA SHOGO (JP)
OKA KATSUMI (JP)
MAKITA SOICHI (JP)
MAEDA SHINICHIRO (JP)
MASUMURA SHOGO (JP)
OKA KATSUMI (JP)
Application Number:
PCT/JP2020/039739
Publication Date:
April 29, 2021
Filing Date:
October 22, 2020
Export Citation:
Assignee:
DELTA KOGYO CO (JP)
International Classes:
F16F6/00; B60N2/50; B60N2/54; B60N2/90; F16F1/06; F16F15/03
Foreign References:
| JP2018095018A | 2018-06-21 | |||
| JP2017210073A | 2017-11-30 | |||
| JP2003320884A | 2003-11-11 | |||
| JPS6072707U | 1985-05-22 | |||
| JPH1130274A | 1999-02-02 | |||
| JP2018095018A | 2018-06-21 |
Other References:
See also references of EP 4050233A4
Attorney, Agent or Firm:
MUGISHIMA Takashi (JP)
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