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Wheel assembly of exercise machine capable of presetting resistance parameters

Wheel assembly of exercise machine capable of presetting resistance parameters description/claims

1. Field of the Invention

The present invention relates, generally to an exercise machine, and more particularly to a wheel assembly of an exercise machine which may preset the resistance parameters.

2. Description of the Related Art

Conventional exercise machines include indoor bike, which is equipped with a resistance wheel 70, as shown in FIG. 6. The resistance wheel 70 includes a motor 71 driving a cable pulling device 72. The cable pulling device 72 pulls a magnet (not shown) through a cable 74 to adjust a distance between the magnet and a flywheel 76 that changes the resistance of the flywheel.

To adjust the resistance of the conventional resistance wheel 70, the magnet is moved through the motor 71, the cable pulling device 72 and the cable 74 that cannot provides a precise control. Therefore, the minimum pulling force of the cable pulling device 72 is adjusted by a screw 78 to generate different pulling distances and get a minimum torque. The motor is electrically connected to an electronic control panel for control of the motor.

The conventional resistance wheel provides the motor moving the magnet through the cable 74. The magnet is mounted on a frame of the flywheel 76 and the motor is mounted on a base of the resistance wheel, therefore it has to adjust the torque after the resistance wheel is made. Typically, the resistance wheel is put on an adjusting machine for adjustment of torque that is a long time and heavy loading job with no help in production. The conventional resistance wheel could not preset the pulling force or preset the parameters of pulling force before the resistance wheel is assembled. Besides, the cable is flexible and the screw 78 provides a single point adjustment (zero point adjustment), therefore there is no chance to provide a precise adjustment of pulling force by the cable 74.

In addition, after we adjust the pulling force to a correct value, it has to input the values of the pulling force and angle into the memory of the electronic control panel to complete the setting process. The electronic control panel is separated from the resistance wheel with a wire connected therebetween, so that the torque set goes incorrect and the control of the pulling force goes incorrect when any one of the electronic control panel, the cable pulling device, the screw or the cable is damaged or replaced.

The primary objective of the present invention is to provide a wheel assembly of an exercise machine, which preset resistance parameters.

The secondary objective of the present invention is to provide a wheel assembly of an exercise machine, which may control the resistance precisely.

The third objective of the present invention is to provide a wheel assembly of an exercise machine, which the set of the resistance parameters will not affected by the damage or replacement of any element.

According to the objectives of the present invention, a wheel assembly of an exercise machine includes a base having a fixed disk. A flywheel is provided on the base. A damper, which is provided on the fixed disk, has a displacement mechanism and a magnet assembly connected to the displacement mechanism and moved by the displacement mechanism toward or away from the flywheel. A motor is provided on the fixed disk and connected to the displacement mechanism for adjusting a position of the magnet assembly. A control circuit, which has a processor, an angle sensor connected to the processor and a memory, is connected to the motor and the damper to sense the position of the magnet assembly and control the motor driving the displacement mechanism to adjust the position of the magnet assembly. Therefore, the memory stores resistance parameters of presetting the magnet assembly acting on the flywheel to achieve the presetting function.

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

FIG. 2 is an exploded view in parts of the preferred embodiment of the present invention;

FIG. 3 is a circuit diagram of the preferred embodiment of the present invention, showing the control circuit;

FIG. 4 and FIG. 5 are top views of the preferred embodiment of the present invention, showing the actions of the present invention; and

FIG. 6 is a perspective view of the conventional wheel assembly of an indoor bike.

• Provisional Patent
• Utility Patent

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