Knee joint assisting mechanism having automatic switchover function

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 new type of mechanical exoskeleton mechanism, specifically, a knee joint assist mechanism that can be automatically switched. 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 squats, the burden on the knee joint is even greater. The knee joint is also prone to fatigue, causing people to suffer from arthritis and other diseases. Mechanical exoskeleton It is an effective tool to solve this problem. In the field of exoskeleton assistance, people always hope to obtain a purely passive knee joint assistance mechanism. No additional power structure is needed. It only needs to be completed with spring energy storage. The general knee joint passive assistance mechanism will use springs and springs. It can be compressed to produce a boosting effect when the human body is squatting. However, this similar structure has a problem tha...

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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