Foot stretching and diagnosis device, and method for calculating stiffness of foot
AssigneeKorea Advanced Institute of Science and Technology
InventorsHyungsoon Park, Yusung Kim
Life of this patent
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Abstract
A foot stretching/checkup device includes: a motor unit; a footrest unit including a lower footrest configured to be rotated about a first rotation axis, an upper footrest configured to be rotated about a second rotation axis and a connecting member connecting the upper footrest and the lower footrest; and a coupling unit including an arm portion rotated by the motor unit and a rotary coupler coupled to the upper footrest. The upper footrest is configured to be rotated by a predetermined angle about the second rotation axis by the rotation of the arm portion. The lower footrest is configured not to be rotated about the first rotation axis by rotation of the arm portion until the upper footrest is rotated by the predetermined angle.
Claims14
A foot stretching device comprising:
- a motor unit;
- a footrest unit including a lower footrest configured to be rotated about a first rotation axis, an upper footrest configured to be rotated about a second rotation axis and a connecting member connecting the upper footrest and the lower footrest;
- and
- a coupling unit including an arm portion rotated by the motor unit and a rotary coupler coupled to the upper footrest,
- wherein the upper footrest is configured to be rotated by a predetermined angle about the second rotation axis by the rotation of the arm portion, and
- the lower footrest is configured not to rotate about the first rotation axis by rotation of the arm portion until the upper footrest is rotated by the predetermined angle.
A foot checkup device comprising:
- a motor unit;
- a footrest unit including a lower footrest configured to be rotated about a first rotation axis, an upper footrest configured to be rotated about a second rotation axis and a connecting member connecting the upper footrest and the lower footrest;
- a sensor unit configured to measure stiffness of a metatarsal joint of a user during the rotation of the upper footrest;
- and
- a coupling unit including an arm portion rotated by the motor unit and a rotary coupler coupled to the upper footrest,
- wherein the upper footrest is configured to be rotated by a predetermined angle about the second rotation axis by the rotation of the arm portion, and
- the lower footrest is configured not to be rotated about the first rotation axis by the rotation of the arm portion until the upper footrest is rotated by the predetermined angle.
A foot stiffness calculation method for calculating stiffness of a foot by using a foot stretching/checkup device that comprises a motor unit, a footrest unit including a lower footrest configured to be rotated about a first rotation axis, an upper footrest configured to be rotated about a second rotation axis and a connecting member connecting the upper footrest and the lower footrest, a sensor unit configured to measure stiffness of a metatarsal joint of a user during the rotation of the upper footrest, and a coupling unit including an arm portion rotated by the motor unit and a rotary coupler coupled to the upper footrest, wherein the upper footrest is configured to be rotated by a predetermined angle about the second rotation axis by the rotation of the arm portion, and the lower footrest is configured not to be rotated about the first rotation axis by the rotation of the arm portion until the upper footrest is rotated by the predetermined angle, the method comprising:
- rotating the upper footrest about the second rotation axis;
- and
- calculating stiffness of a foot of a user based on a rotation angle and a torque of the upper footrest measured by a first sensor unit during the rotation of the upper footrest.
Dependencies are inferred from the claim text.