An electromagnetically controlled wheel resistance adjusting device includes a motor, a magnetic tile, a potentiometer, a circuit board, a socket, a connecting rod and an output gear. The socket, the motor and the potentiometer are electrically connected to the circuit board, respectively. An external controller may, through the socket and the circuit board, provide power to the motor and control operation of the motor. The external controller may, through the socket and the circuit board, provide power for the potentiometer and receive an output voltage sent by the potentiometer. The motor drives the magnetic tile to move through the output gear and the connecting rod. The output voltage of the potentiometer varies with the rotation angle of the output gear. The external controller may drive the magnetic tile to rotate through the motor, and determine the moving angle of the magnetic tile through the output voltage of the potentiometer.

Systems and methods for adjusting resistance on an exercise apparatus include a first resistance apparatus having an adjusting bracket, magnetic members mounted on an inner surface of the adjusting bracket, a stepper motor having an adjusting shaft and operable to traverse a portion of the length of the adjusting shaft. At a first position, the magnetic members are disposed above a flywheel, and in a second position, the magnetic members are disposed on opposite sides of the flywheel, providing resistance thereto. A load cell couples the adjusting bracket to the frame and generates a signal corresponding to the movement of the adjusting bracket. A computing system calculates resistance, rpms, power from load cell signal, stepper motor position, shaft rotational position and other sensor inputs.

Embodiments disclosed herein provide an exercise system that facilitates a varying load. During operation, the system produces a load-control pattern using a control module, and varies a load using a load-varying mechanism based on the load-control pattern, thereby facilitating varying-load during exercise for effective muscle stimulation.

This invention reveals an electric bicycle system including an electric bicycle and a docking device. When the electric bicycle is uprightly prop against the docking device, the electric bicycle can be driven with a pedal, making the electric bicycle system a training equipment.

An exercise machine with resistance selector system for selecting the number of bias members applying a resistance force against a movable platform. The exercise machine with resistance selector system generally includes one or more switches which are connected to the movable platform. Each of the one or more switches is adapted to engage or disengage a corresponding latch. When engaged, the latch will connect a corresponding bias member to the movable platform. When disengaged, the latch will disconnect a corresponding bias member from the movable platform. In this manner, an exerciser may easily adjust the number of bias members connected to the movable platform so as to adjust the resistance force applied against movement of the movable platform along a rail.

A fluid-damped direct-drive bicycle riding platform includes a rack for supporting, a main shaft, a transmission shaft and a fluid resistor, wherein the rack includes a front bottom foot tube, a rear bottom foot tube, a front support rod, a main beam and an angle adjuster; the front support rod is fixed on the front bottom foot tube, the main beam is fixed on the rear bottom foot tube, the angle adjuster is fixed on the main beam, the upper end of the front support rod is hinged to the angle adjuster through a spline, the main beam is provided with the main shaft and the transmission shaft, the main shaft is press-fitted on the main beam in an interference fit, the main shaft and transmission shaft are driven by a pulley and a belt to drive the liquid resistor fixed to the left end of the transmission shaft.

Exercise machines having a user support and at least one user engagement actuator assembly wherein motion of the at least one user engagement actuator assemblies is resisted in both the push and pull directions by the resisted rotation of a one-direction flywheel that is operatively engaged with a braking mechanism. The resistance of the push direction can be less, greater, or equal to the resistance of the pull direction. Each user engagement actuator assembly can be configured to create various unique push and pull exercise stations. Multiple exercise stations can be mounted on each machine that can be operated independently or concurrently.

A magnetic control device for directly sensing the motion load value especially the one that has a magnetic resistance mechanism which is “floating” and pivoted on the inner edge of the outer ring body of a flywheel; an acting rod, one end of is locked on the outside of the magnetic resistance mechanism and synchronized with it, and the other end has a pressure applied member connected to the beam load cell; a torque value conversion unit for converting the load value of the beam load cell into a torque value; so as to achieves directly measuring the motion load value, which has the effect of improving the detection accuracy.

An elliptical exercise device includes a pedal assembly, the pedal assembly including at least one pedal member configured to receive a force exerted thereon by a user, the at least one pedal member configured to rotate in an elliptical pedal path when the force is exerted thereon; a drivetrain assembly operatively coupled to the pedal assembly; and a resistance assembly operatively coupled to the drivetrain assembly, the drivetrain assembly configured to transfer the motive power generated by the user from the pedal assembly to the resistance assembly, and the resistance assembly configured to provide a resistance force to oppose a rotational movement of one or more components of the resistance assembly. In some embodiments, the elliptical exercise device is configured to accommodate a user in a generally supine position.

A training device includes a force receiving component, a location detector, a resistance generator, and a controller. The force receiving component moves along a closed trajectory. The location detector is configured to detect a location of the force receiving component in the closed trajectory and to output a location signal. The resistance generator is configured to exert a resistance on the force receiving component. The controller controls the resistance generator to adjust the resistance based on the location signal.