A booster leg based on multi-stage spring lock mechanism

Abstract

The invention discloses an assistant leg based on a multi-stage spring lock mechanism, and belongs to the field of medical auxiliary sports apparatuses. The assistant leg comprises a calf supporting structure, a spring energy-storage device, a foot fixing device and a knee joint supporting structure, wherein the calf supporting structure comprises a calf connecting plate and a calf fixing plate; one end of a tension spring on the spring energy-storage device is fixed to a support frame and the other end of the tension spring is linked to a chain; a fiber rope is connected to the other end of the chain; meanwhile, a steel wire rope is connected to the lower end of a movable pulley, and the steel wire rope is connected to a fixed piece; a disc brake group is arranged on one side of a chain wheel; a disc brake cable is arranged on the disc brake group, and the disc brake cable is connected to a disc brake switch; a foot base plate of the foot fixing device is connected to a pedal; one end of a pneumatic rod on the knee joint supporting device is fixedly arranged on the support frame; and the other end of the pneumatic rod is connected to a thigh fixing plate. The device (the assistant leg) is simple and convenient to wear and is capable of assisting a leg in normal walking; the problem that energy is stored without bouncing when a user takes a step and the energy is released for assisting when the user walks forwards is solved; and in addition, a knee joint torque when sitting down and standing up can be also relieved, so that physical consumption is reduced.

Description

technical field [0001] This patent relates to a power-assisted leg based on a multi-stage spring lock mechanism, which belongs to the field of medical auxiliary exercise equipment. Background technique [0002] At present, the artificial limb market for the disabled is considering the use of elastic materials to ensure the normal walking of people. Most of them use materials to simulate cushioning, or simply support them to meet the walking needs of disabled people. However, energy storage is used intensively in the field of sports for the disabled. Prosthetic limbs with high energy storage, due to their high elasticity and toughness, have extremely strong elasticity at each step and are not suitable for normal walking. Especially middle-aged and elderly people with disabilities or normal people, prosthetics or wearable exoskeletons need a mechanical structure considered from the perspective of normal walking, so as to solve the problem of energy storage not rebounding when...

AI Technical Summary

Problems solved by technology

However, energy storage is used intensively in the field of sports for the disabled. Prosthetic limbs with high energy storage, due to their high elasticity and toughness, have extremely strong elasticity at each step and are not suitable for normal walking.

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