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Integrated fixing piston type variable-damping hydraulic cylinder

A technology of variable damping and hydraulic cylinders, applied in liquid shock absorbers, spring/shock absorber design features, passive exercise equipment, etc., can solve problems such as discomfort, gait asymmetry, and increased energy consumption of patients , to achieve the effect of improving battery life, reducing energy consumption, and simple hydraulic cylinder structure

Inactive Publication Date: 2018-07-10
SHENZHEN ROBO MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comfort of the rehabilitation robot is mainly determined by the followability of the swing speed, because if the joint drive damping cannot be changed, the rehabilitation robot cannot change with the pace of the healthy limb, resulting in an asymmetrical gait and increased energy consumption of the patient. cause great discomfort

Method used

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  • Integrated fixing piston type variable-damping hydraulic cylinder
  • Integrated fixing piston type variable-damping hydraulic cylinder
  • Integrated fixing piston type variable-damping hydraulic cylinder

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Embodiment Construction

[0024] Such as Figure 1 to Figure 3 As shown, an integrated fixed piston type variable damping hydraulic cylinder is used in knee joint rehabilitation equipment. Specifically, the knee joint rehabilitation equipment includes a thigh shell and a calf shell that are fixedly arranged on the human thigh and calf respectively. body, the thigh housing and the shank housing are hinged, and the two ends of the damping hydraulic cylinder of the present invention are respectively hinged with the thigh housing and the shank housing, which includes a cylinder body 1, a piston rod 2 that is movably connected with the cylinder body 1, and sets In the plug body in the cylinder body 1, the piston rod 2 drives the thigh to rotate relative to the calf during the contraction and extension process, so as to realize the bending and straightening of the knee joint. The plug body includes a fixed plug 3 arranged in the middle of the inner chamber of the cylinder body 1, And the first piston 4 and t...

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Abstract

The invention discloses an integrated fixing piston type variable-damping hydraulic cylinder. The integrated fixing piston type variable-damping hydraulic cylinder comprises a cylinder body, a pistonrod movably connected with the cylinder body and a piston body arranged in the cylinder body; the piston body comprises a fixing piston, a first piston and a second piston, the first piston is fixedlyconnected with the end of the piston rod, a first cavity is formed by the first piston and the fixing piston, a second cavity is formed by the second piston and the fixing piston, and the first piston and the second piston are connected with a first elastic part and a second elastic part which are arranged at the two ends of the cylinder body respectively; and an oil control cavity is formed in the middle of the fixing piston, the side wall of the fixing piston is provided with a first oil way communicating with the first cavity and the oil control cavity and a second oil way communicating with the second cavity and the oil control cavity, and an adjusting mechanism is arranged in the oil control cavity. According to the integrated fixing piston type variable-damping hydraulic cylinder, the structure is simple, piston rod extension and contraction two-way damping adjusting can be achieved, and then the speed of knee joints in the swinging period and the stability of the knee joints inthe supporting period can be adjusted.

Description

technical field [0001] The invention relates to the field of medical rehabilitation equipment, in particular to an integrated fixed-piston variable damping hydraulic cylinder for a rehabilitation robot. Background technique [0002] The performance of a rehabilitation robot depends largely on the comfort and safety of the wearer. The comfort of the rehabilitation robot is mainly determined by the followability of the swing speed, because if the joint drive damping cannot be changed, the rehabilitation robot cannot change with the pace of the healthy limb, resulting in an asymmetrical gait and increased energy consumption of the patient. Creates a great sense of discomfort. At the same time, the stability of the rehabilitation robot during the support period is an important guarantee for walking safety. The traditional simple rehabilitation robot uses mechanical damping, and its size cannot be adjusted or automatically changed with the pace. Therefore, when the rehabilitati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/16F16F9/44F16F9/32A61H1/02A61H3/00
CPCF16F9/16A61H1/0237A61H3/00A61H2003/007A61H2201/1238F16F9/3207F16F9/44F16F2230/42
Inventor 张剑韬沈林鹏胡昆吴少立田贵彬
Owner SHENZHEN ROBO MEDICAL TECH CO LTD
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