5results about How to "Adjustable resistance" patented technology

The utility model discloses rehabilitation training equipment for the neurology department. The rehabilitation training equipment comprises a core shell. A sliding blind hole shell is arranged on an upper plate of the square frame in a sliding manner; the middle of a lower plate of the core shell protrudes upwards to form a containing part, a fixed core nut is fixedly arranged on the upper portion of the containing part, a core screw is arranged on the fixed core nut, an auxiliary movable nut is arranged on a stud part of the core screw, and the auxiliary movable nut is in threaded fit with the stud part of the core screw. The auxiliary movable nut is provided with a spring, and the top of the spring abuts against the lower side of the inner top wall of the sliding type blind hole shell. Personalized training intensity adjustment: the user can freely adjust the compression degree of the spring by adjusting the position of the auxiliary movable nut, so that the force required for pressing the cushion body is changed. The personalized setting ensures that the equipment can adapt to different rehabilitation stages and different individual training requirements, so that the rehabilitation process is more scientific and efficient.

An abdominal exerciser includes a base, a vertical tube, a T-shaped handle, a first spring, and a second spring. The base includes a first container groove, a second container groove, and a vertical tube groove in the center of the base. The upper end of the vertical tube is connected to the T-shaped handle, and the lower end of the vertical tube is detachably arranged in the vertical tube groove. The lower ends of the first spring and the second spring are respectively detachably arranged in the first container groove and the second container groove. A user can select one of the first spring or the second spring to be installed in the vertical tube, and the upper end of the selected spring is connected to the T-shaped handle, and the lower end of the selected spring is connected to the vertical tube groove.

The application discloses a kind of power-assisted exoskeleton devices, including: bottom plate, pedestal being arranged on the bottom plate, and seat cushion being fixed at the top of the pedestal;It further includes two groups of exoskeleton support structures arranged in the front side of the pedestal;The front end of each group of the exoskeleton support structure is further provided with pedal structure;It further includes meshing transmission assembly arranged between each group of the pedal structure and exoskeleton support structure.The application is realized by the exoskeleton support structure of two groups arranged, cooperate with the pedal structure arranged in the front end of exoskeleton support structure, to realize the support of patient lower limbs, and improve the power-assisted effect of hip, knee, ankle joint rigid support, and under the action of exoskeleton support structure, cooperate with meshing transmission assembly, further realize the range of motion training of patient lower limb joint, the device component structure is simple, and realizes the activity training of lower limb multi-joint, and the rehabilitation effect is remarkable, and practicality is high.

The application provides a differential signal amplification circuit, which comprises a differential amplifier and a common-mode voltage module. The common-mode voltage module comprises a common-mode voltage detection circuit and a bias circuit, and the common-mode voltage detection circuit and the bias circuit are connected. The differential amplifier has a first signal input end, a second signal input end, a first signal output end and a second signal output end, the first signal input end and the second signal input end are connected with the common-mode voltage detection circuit, and the bias circuit is connected with the differential amplifier. By connecting the differential amplifier with the common-mode voltage module, and by comprising the common-mode voltage detection circuit and the bias circuit, the common-mode voltage range of the input high-speed signal is improved by automatically adjusting the DC working range of the differential amplifier through the common-mode voltage detection of the input signal, wide-range common-mode voltage input is realized, and the cost is low and easy to realize.

This utility model discloses an electromagnetic system for a molded case circuit breaker, including a magnetic yoke, a coil frame fixedly mounted on the magnetic yoke, and a coil sleeved on the outside of the coil frame. One end of the coil is connected to a stationary contact, and the other end of the coil is connected to a conductive element. A through slot is opened in the middle of the coil frame, and a moving iron core is slidably installed inside the through slot. A push rod is fixedly connected to one side of the moving iron core, and a reaction spring is sleeved on the outside of the push rod. A stationary iron core is rotatably installed at one end of the coil frame. A square slot is opened on one side of the stationary iron core, and a square block is slidably installed inside the square slot. A drive ring is integrally formed on one side of the square block. This utility model, through the square block, drive ring, internal thread, external thread, and stationary iron core, allows the resistance applied by the reaction spring to the moving iron core to be adjusted by rotating the stationary iron core, thereby changing the current required to trigger the movement of the moving iron core, so as to adapt to molded case circuit breakers with different rated current specifications.