An automatic switching knee assist mechanism

Abstract

The invention discloses a knee joint assisting mechanism having an automatic switchover function. The knee joint assisting mechanism mainly consists of a thigh supporting rod, a shank supporting rod, a joint bearing, bearing supporting seat, a spring compressed rod, a sliding part, a fixing part, hinge parts, a sliding and supporting rod and a thenar supporting part, wherein the thigh supporting rod is connected with the shank supporting rod by the joint bearing and the bearing supporting seat; the upper end of the spring compressed rod is fixed to the lower end of the thigh supporting rod by one of the hinge parts and the fixing part; the lower end of the compressed rod is fixed to the sliding part on the shank supporting rod by another hinge part; the sliding part and the sliding and supporting rod in the shank supporting rod are in interference fixation by a pin shaft; and the thenar supporting part is closely fixed to the bottom of the shank supporting rod by a screw, and is used for bearing the gravity from a knee joint. When a thenar touches the ground, the knee joint bends, the spring rod works to generate assisting effects; and when a human body walks, a thenar part is away from the ground, the sliding and supporting rod is free, and the spring rod cannot be compressed for working, so that walking interference cannot be generated to the human body.

Description

technical field [0001] The invention relates to a novel mechanical exoskeleton mechanism, specifically, an automatically switchable knee joint assisting mechanism. Background technique [0002] In human activities, the knee joint is the part that bears the greatest burden on the human body, especially when the human body is squatting. It is an effective tool to solve this problem. In the field of exoskeleton assisting, people always hope to obtain a purely passive knee assisting mechanism, which does not require additional power structures, and only needs to be completed with spring energy storage originals; general passive knee assisting mechanisms use springs, springs It can be compressed to produce a boosting effect when the human body squats down. However, there is a problem in this similar structure, which cannot solve the spring interference caused by the bending of the knee joint when the human body walks. The present invention is a concrete solution to this problem...

AI Technical Summary

Problems solved by technology

In the field of exoskeleton assisting, people always hope to obtain a purely passive knee assisting mechanism, which does not require additional power structures, and only needs to be completed with spring energy storage originals; general passive knee assisting mechanisms use springs, springs It can be compressed when the human body squats to produce a power-assisted effect. However, there is a problem in this similar structure, which cannot solve the spring interference caused by the bending of the knee joint when the human body walks.

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