Elbow structure for electronic artificial arm
AssigneeMand.Ro Co., Ltd.
InventorSang Ho Yi
Life of this patent
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Abstract
Disclosed is an elbow structure, for an electronic artificial arm, which hinge-connects the humeral part and radioulnar part and enables the joint movement of the humeral part and radioulnar part about one central axis. The elbow structure for an electronic artificial arm comprises: a first connection unit of which one end is connected to the radioulnar part and which has inside the other end a plurality of driving portions provided concentrically with and a predetermined distance away from the central axis and each having a gear on one end; and a second connection unit of which one end is connected to the humeral part and which has teeth portions aligned in a circle so as to interlock and rotate with the gears of the plurality of driving portions in the outer direction.
Claims5
An elbow structure of an electronic prosthetic hand in which an upper arm and a lower arm are hinge-connected and which jointly moves the upper arm and the lower arm about one central axis z, the elbow structure comprising:
- a first connection part that has one end connected to the lower arm and is provided with a plurality of driving units disposed on a concentric circle spaced a predetermined interval (h) from the one central axis (z) in another end thereof and provided with gears;
- and
- a second connection part that has one end connected to the upper arm and has a toothed part disposed in a circular shape to be engaged with the gears of the plurality of driving units in an outward direction and rotated therewith,
- wherein the gears of the plurality of driving units are rotated while being engaged with the toothed part,
- wherein the toothed part is provided in a pair and includes a first toothed part located in one side surface direction with respect to the first connection part and a second toothed part located in another side surface direction,
- wherein the plurality of driving units are classified into a first driving group facing the one side surface direction so that the gears are engaged with the first toothed part and a second driving group facing the another side surface direction so that the gears are engaged with the second toothed part, and
- wherein the first driving group and the second driving group are arranged sequentially with each other.
Dependencies are inferred from the claim text.