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Elbow joint

A technology of elbow joint and gear shaft, which is applied in the field of artificial limbs in rehabilitation engineering, can solve the problems of loud noise and heavy weight, and achieve the effect of convenient installation, light weight and beautiful appearance

Inactive Publication Date: 2017-01-25
JIANGSU RUIZHI MEDICAL INSTR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The myoelectrically controlled elbow joint widely used in the market is structurally powered by a micro motor, which is driven by gears at various levels to move the elbow joint. The advantage of this structure is that the elbow joint is controlled by the myoelectric signal. Up and down movement has the disadvantage of heavy weight and loud noise during work, which makes some patients dissatisfied. If there is an elbow joint with a simple and compact structure, which can reduce the processing errors and assembly errors of parts, it can improve the stability of product quality, and The operation is simple, so that patients can use the prosthesis more at ease and worry-free

Method used

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  • Elbow joint

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Embodiment Construction

[0008] Depend on figure 1 As shown, the elbow joint of the present invention includes a clutch 1, a reduction gear 2, a spring 3, an output shaft 4, a fork 5, a threaded gear shaft 6 and a motor, and the fork 5 and the threaded gear shaft 6 form a thread pair, and the reduction gear 2 The center hole and the output shaft 4 adopt clearance fit. The motor rotates forward, driving the threaded gear shaft 6 to rotate forward, the fork 5 moves axially along the threaded gear shaft 6, and when the fork 5 moves to the side wall of the annular groove of the reduction gear 2, it drives the reduction gear 2 and the clutch 1 Separated, the output shaft 4 rotates freely, thereby drives the forearm to swing freely. The motor reverses, and the threaded gear shaft also reverses, driving the fork 5 to move in the reverse direction along the threaded gear shaft 6, and the reduction gear 2 will move axially along the output shaft 4 in the opposite direction under the action of the spring 3 and...

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Abstract

The elbow joint is composed of a clutch, a reduction gear, a spring, an output shaft, a fork, a threaded gear shaft and a motor. When the fork moves to the side wall of the annular groove of the reduction gear, the reduction gear and the clutch are separated, and the output shaft rotates freely, thereby driving the forearm to swing freely; the motor reverses, and the threaded gear shaft also reverses, driving The fork moves in the reverse direction along the threaded gear shaft, and the reduction gear will move in the opposite direction along the output shaft axially under the action of the spring and contact with the clutch. After the teeth of the two are engaged, the rotation of the threaded gear shaft is transmitted to the output shaft, thereby driving Flexion of the forearm. The invention is an elbow joint with compact structure, beautiful appearance, light weight, simple assembly process and convenient installation.

Description

technical field [0001] The invention relates to the artificial limb field of rehabilitation engineering, specifically an elbow joint. Background technique [0002] The myoelectrically controlled elbow joint widely used in the market is structurally powered by a micro motor, which is driven by gears at various levels to move the elbow joint. The advantage of this structure is that the elbow joint is controlled by the myoelectric signal. Up and down movement has the disadvantage of heavy weight and loud noise during work, which makes some patients dissatisfied. If there is an elbow joint with a simple and compact structure, which can reduce the processing errors and assembly errors of parts, it can improve the stability of product quality, and The operation is simple, so that patients can use the prosthesis with more confidence and peace of mind. Contents of the invention [0003] In order to meet the above requirements, the object of the present invention is to provide an ...

Claims

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Application Information

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IPC IPC(8): A61F2/38
Inventor 李永君
Owner JIANGSU RUIZHI MEDICAL INSTR TECH CO LTD