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US 12,042,406 B2Granted
Multi-articulated link knee joint
AssigneeNabtesco Corporation
InventorMasahiko Okuda
Life of this patent
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Abstract
A multi-articulated link knee joint includes: a knee unit in which an upper link unit rotates relative to a lower link unit by a multi-articulated link mechanism including a plurality of link units including the upper link unit and the lower link unit; a relative position detector for detecting a relative position of the upper link unit relative to the lower link unit; and an angle detector for obtaining a bending angle of the knee unit from the detected relative position.
Claims1
A multi-articulated link knee joint comprising:
- a knee unit in which an upper link unit is structured to rotate relative to a lower link unit by a four-articulated link mechanism including four link units consisting of the upper link unit, the lower link unit, and a front link unit and a rear link unit structured to rotatably support the upper link unit relative to the lower link unit;
- a relative position detector structured to detect a distance from the upper link unit to the front link unit;
- and
- an angle detector structured to obtain a bending angle of the knee unit from the detected distance,
- wherein the relative position detector includes:
- a magnet provided at the upper link unit;
- and
- a magnetic sensor provided at the front link unit, the magnetic sensor structured to detect an intensity of a magnetic field generated by the magnet.
5 more elements
Dependencies are inferred from the claim text.