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US 7,753,632 B2Granted
Fastening device
AssigneeHonda Motor Co., Ltd.
InventorsTadashi Naitou, Yuta Urushiyama, Shunji Suzuki, Katsuaki Taguchi
Life of this patent
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Abstract
A fastening device includes a fastening member that fixedly fastens fastened members, and a driving member that is capable of releasing a fastening state of the fastening member by applying a driving force to a moving portion provided in the fastening member to drive it, wherein the driving member is formed of a shape memory alloy, and the driving force is a restoring force of the shape memory alloy to its memory shape.
Claims8
A fastening device comprising:
- a fastening member that fixedly fastens fastened members;
- and
- a driving member configured to release a fastening state of the fastening member by applying a driving force to a moving portion provided in the fastening member to drive the moving portion either coaxially or orthogonally relative to a longitudinal axis of the fastening member,
- wherein the driving member is formed of a shape memory alloy having a coil shape, is deformed in the fastening state of the fastening member, and the driving force is a restoring force of the shape memory alloy, and
- wherein the deformed shape of the driving member is an oblong coil while the memory shape thereof is a circular coil so that in the fastening state a distance between-two predetermined positions of the coil shape becomes closer than a distance in the memory shape.
2 more elements
Dependencies are inferred from the claim text.