Fitness device based on direct-drive motor
A fitness device includes a housing, a driving motor mounted on the housing, a fitness pull rope connected to the driving motor, and a control system connected to the driving motor. The control system comprises a main controller, a power module, a communication module, a driving circuit and a sampling module, the power module is electrically connected to the main controller and the communication module, the communication module is electrically connected to the main controller, the sampling module is electrically connected to the driving motor and the main controller, and the driving circuit is electrically connected to the power module, the main controller and the driving motor. The fitness pull rope is arranged on the driving motor functioning as a full driver, and the control system is used for controlling the pull force of the driving motor, thereby realizing smart fitness.
1 . A fitness device based on a direct-drive motor, comprising a housing, a driving motor mounted on the housing, a fitness pull rope connected to the driving motor, and a control system connected to the driving motor, wherein the control system comprises a main controller, a power module, a communication module, a driving circuit and a sampling module, the power moule is electrically connected to the main controller and the communication module, the communication module is electrically connected to the main controller, the sampling module is electrically connected to the driving motor and the main controller, and the driving circuit is electrically connected to the power module, the main controller and the driving motor;
wherein the driving motor comprises a base, a stator assembly arranged on an outer edge of the base, a rotary shaft assembly arranged in the base, a rotor assembly connected to the rotary shaft assembly and covering the stator assembly, and a motor control plate arranged on the base and connected to the driving circuit;
the rotor assembly comprises an outer end cover connected to the rotary shaft assembly, a connecting ring connected to the outer end cover and corresponding to an outer edge of the stator assembly, and a rotor element mounted to the connecting ring and corresponding to the stator assembly, an inner end cover is connected to a side, away from the outer end cover, of the connecting ring, the inner end cover is rotatably connected to an outer circumferential surface of the external end;
the outer end cover is fixedly connected to a pull rope reel, and the fitness pull rope is wound around the pull rope reel, extends out of the housing and is connected to a grip ring; and
wherein the sampling module is a current sampling module and used for sampling a current of the driving motor, the sampling module continuously compares a sampled current of the driving motor with an input instruction and adjusts the current continuously until the pull force output by the driving motor reaches the value in the input instruction.
2 . The fitness device based on a direct-drive motor according to claim 1 , wherein the housing is provided with an operation panel electrically connected to the communication module.
3 . The fitness device based on a direct-drive motor according to claim 2 , wherein the main controller is an MCU processor, and the communication module is a communication interface connected to the operation panel.
4 . The fitness device based on a direct-drive motor according to claim 1 , wherein the base comprises an internal end, an external end and a rotary mounting cavity passing through the internal end and the external end, the rotary shaft assembly is rotatably mounted in the rotary mounting cavity, a mounting stand is arranged at the internal end, an internal groove is formed in the external end, a convex ring is arranged on an outer edge of the mounting stand, a mounting hole is formed in the convex ring, a plurality of gaps are formed in the mounting stand, and through holes are formed in the external end, connected to the gaps and located on a side of the internal groove.
5 . The fitness device based on a direct-drive motor according to claim 4 , wherein the stator assembly comprises an iron core and coils regularly arranged on the iron core, the iron core comprises a plurality of teeth arranged in a circumferential direction thereof, the coils are wound around the teeth, and an outer circumferential surface of the internal end is provided with a plurality of fastening grooves corresponding to an inner circumferential surface of the iron core.
6 . The fitness device based on a direct-drive motor according to claim 5 , wherein the rotary shaft assembly comprises a bearing assembly mounted in the rotary mounting cavity and a rotary shaft rotatably mounted in the bearing assembly, one end of the rotary shaft is connected to the rotor assembly, and a fixing element is mounted at the other end of the rotary shaft; and the rotary mounting cavity is provided with a first limit groove and a second limit groove, the bearing assembly is provided with two bearings, and the two bearings are mounted in the first limit groove and the second limit groove respectively.
7 . The fitness device based on a direct-drive motor according to claim 1 , wherein the outer end cover is provided with a reinforcing stand, the reinforcing stand is provided with a connecting hole, a limit shoulder is arranged in the connecting hole, and the outer end cover is connected to the rotary shaft assembly through the connecting hole; and the inner end cover is connected to a connecting bearing, and the connecting bearing is disposed around the outer circumferential surface of the external end.