Interval constant-force device capable of realizing stepless adjustment

Abstract

An interval constant-force device capable of realizing stepless adjustment comprises a rope used for transmitting tension, a spring barrel, a spring shaft, a spring and an adjusting mechanism; the center end of the spring is connected to the spring shaft; the outer end of the spring is connected to the inner wall of the spring barrel; a cam is fixedly connected to one side of the spring barrel; one end of the rope is fixedly connected to the cam and is connected with an external stress mechanism after bypassing the cambered surface of the cam; the tightening degree of the spring is increased when the rope pulls the cam and the spring barrel to rotate around the spring shaft, and meanwhile, the corresponding radius vector on the cam is increased, so that the tension transmitted by the ropeis kept constant; the adjusting mechanism comprises a motor, a motor driver and a worm gear and worm reducer; the output end of the motor is connected with the input end of the worm gear and worm reducer; and the output end of the worm gear and worm reducer is connected with the spring shaft through a connecting assembly. According to the device, stepless adjustment of the tension on the cervicalvertebra of a patient can be realized, and the tension most suitable for the neck of the patient can be found.

Description

technical field [0001] The invention relates to the technical field of medical and health care equipment, in particular to an interval constant force device capable of realizing stepless adjustment. Background technique [0002] As we all know, the cervical traction frame is a device for treating cervical spondylosis. Because effective traction can relieve the compression of nerves, blood vessels, and spinal cord, and quickly relieve the symptoms of cervical spondylosis. The common cervical traction frame is inconvenient to use, because the pulling force of the traction frame on the human cervical spine requires the therapist to manually control the number of heavy objects to change, so the tensile force can only be approximately equal to that of a single heavy object. Integer multiples of gravity, the tension cannot be adjusted steplessly. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to propose...

AI Technical Summary

Problems solved by technology

The common cervical traction frame is inconvenient to use, because the pulling force of the traction frame on the human cervical spine requires the therapist to manually control the number of heavy objects to change, so the tensile force can only be approximately equal to that of a single heavy object. Integer multiples of gravity, unable to realize stepless adjustment of pulling force

Images