US 11,143,265 B2Granted

SMA-STF based viscous damper

AssigneesLi Sun, Chunwei Zhang

InventorsLi Sun, Chunwei Zhang, Heming Zhang, Chunyang Zhu, Yinru Lv, Chuang Li

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Abstract

An SMA-STF based viscous damper includes a first connector, a piston rod, a piston which is sheathed on the piston rod; a damping cylinder; first and second end covers which are respectively provided at two sides of the damping cylinder; a second connector which is fixedly connected to the second end cover; and first and second SMA springs which are respectively sheathed on the piston rod. The damping cylinder has first and second damping cavities between which the piston is arranged. One end of the piston rod passes through the first end cover and is connected to the first connector, and the other end passes through the second connector. The first and second SMA springs are respectively held in the first and second damping cavities in an elastic state. The first and second damping cavities are respectively filled with the STF.

Claims7

Dependent claims

An SMA-STF based viscous damper, comprising:

a first connector;
a piston rod;
a damping cylinder;
a first end cover and a second end cover which are respectively provided at two ends of the damping cylinder;
a piston which is sheathed on the piston rod;
a first shape memory alloy (SMA) spring and a second SMA spring which are respectively sheathed on the piston rod;
and
a second connector which is fixedly connected to the second end cover;
wherein the damping cylinder has a first damping cavity and a second damping cavity between which the piston is arranged;
one end of the piston rod passes through the first end cover and is connected to the first connector, and the other end of the piston rod passes through the second connector;
the first SMA spring and the second SMA spring are respectively held in the first damping cavity and the second damping cavity in an elastic state;
and the first damping cavity and the second damping cavity are respectively filled with an shear thickening fluid (STF).

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/992,249Filed 13 Aug 2020 · continuation
Priority: JP 201811390707.221 Nov 2018
Published: US 2020/0370617 A126 Nov 2020
Granted: 12 Oct 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F16F 13/005
Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs: comprising both a wound spring and…
F16F 13/007
Comprising both a wound spring and a damper, e.g. a friction damper: the damper being a fluid damper
E04H 9/0237
Bearing, supporting or connecting constructions specially adapted for such buildings: structural braces with damping devices
F16F 1/021
Made of steel or other material having low internal friction ; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring…