Multi-stage torque adjusting resistance system

Abstract

The utility model discloses a resistance system with multi-stage torque adjustment, which is used for fitness equipment and comprises a resistance module used for providing resistance and recovery speed; one end of the torque transmission module is connected with the output end of the resistance module, and the torque transmission module is used for transmitting the resistance output by the resistance module; and the input end of the resistance control module is connected with the other end of the torque transmission module, and the output end of the resistance control module is connected with an external take-up reel. The resistance system capable of adjusting the multi-stage torque can output constant adjustable resistance, and noise generated by the resistance system is small. The resistance recovery speed is controllable; and when the large constant resistance needs to be output, the large constant resistance can be output without using a high-power servo motor, so that the use convenience is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance systems used in fitness equipment, and particularly relates to a resistance system with multi-stage torque adjustment. Background Art

[0002] The resistance system used in traditional fitness equipment realizes the change of resistance by using counterweights of different masses. However, the counterweights usually provide fixed resistance, which is difficult to adjust according to actual needs, and this resistance system will also generate a lot of noise during use; during the resistance recovery process, the traditional resistance recovery relies on the self-gravity of the counterweights to achieve the resistance recovery, and this resistance system cannot control the recovery speed during recovery. Summary of the Utility Model

[0003] According to an embodiment of the present utility model, there is provided a resistance system with multi-stage torque adjustment for fitness equipment, comprising:

[0004] A resistance module, which is used to provide resistance and the speed during resistance recovery;

[0005] A torque transmission module, one end of which is connected to the output end of the resistance module, and the torque transmission module is used to transmit the resistance output by the resistance module;

[0006] A resistance control module, the input end of which is connected to the other end of the torque transmission module, and the output end of the resistance control module is connected to an external wire reel.

[0007] Further, the resistance module comprises: a power element and a first gear, and a first gear is provided at the output end of the power element.

[0008] Further, the torque transmission module comprises:

[0009] A first rotating shaft;

[0010] A second gear, which is sleeved on one end of the first rotating shaft, and the second gear meshes with the first gear;

[0011] A second rotating shaft, which is arranged parallel to the first rotating shaft;

[0012] A pair of synchronous pulleys, one synchronous pulley is sleeved on the other end of the first rotating shaft, and the other synchronous pulley is sleeved on the second rotating shaft;

[0013] A synchronous belt, which is used to connect the pair of synchronous pulleys.

[0014] Further, the first gear and the second gear are herringbone helical gears.

[0015] Further, the module number of the second gear is greater than that of the first gear.

[0016] Further, the diameter of the synchronous pulley sleeved on the first rotating shaft is smaller than the diameter of the synchronous pulley sleeved on the second rotating shaft.

[0017] Further, the torque transmission module further includes: a tension pulley, which is arranged between a pair of synchronous pulleys and is in contact with the synchronous belt.

[0018] Further, the resistance control module is a magnetic powder clutch, and the magnetic powder clutch is sleeved on the second rotating shaft.

[0019] According to the multi-stage torque adjustment resistance system of the embodiment of the present invention, it can output a constant adjustable resistance, and the noise generated by it is small; the speed of recovering the resistance is controllable; and when a very large constant resistance needs to be output, it can be achieved without using a high-power servo motor, ensuring the convenience of use.

[0020] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a fitness equipment equipped with the multi-stage torque adjustment resistance system of the embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the multi-stage torque adjustment resistance system according to the embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following will combine with the drawings to describe in detail the preferred embodiments of the present invention and further elaborate on the present invention.

[0024] First, it will be combined with Figures 1 - 2 Describe the multi-stage torque adjustment resistance system according to the embodiment of the present invention, which is applied to fitness equipment and has a wide range of application scenarios.

[0025] As Figure 2 shown, the multi-stage torque adjustment resistance system of the embodiment of the present invention has a resistance module 1, a torque transmission module 2, and a resistance control module 3.

[0026] Specifically, as Figure 2 shown, the resistance module 1 is used to provide the resistance and the speed during resistance recovery; one end of the torque transmission module 2 is connected to the output end of the resistance module 1, and the torque transmission module 2 is used to transmit the resistance output by the resistance module 1; the resistance control module 3, the input end of the resistance control module 3 is connected to the other end of the torque transmission module 2, and the output end of the resistance control module 3 is connected to an external wire reel. The resistance control module 3 is used to control the entire system to output a constant adjustable resistance.

[0027] Furthermore, as shown in Figure 1 and 2 , the resistance module 1 includes: a power element 11 and a first gear 12. The first gear 12 is provided at the output end of the power element 11. In this embodiment, the power element 11 is a servo motor, and the servo motor provides the resistance source and the speed during resistance recovery.

[0028] Furthermore, as shown in Figure 1 and 2 , the torque transmission module 2 includes: a first rotating shaft 21, a second gear 22, a second rotating shaft 23, a pair of synchronous pulleys 24 and a synchronous belt 25; the second gear 22 is sleeved at one end of the first rotating shaft 21, and the second gear 22 meshes with the first gear 12; the second rotating shaft 23 and the first rotating shaft 21 are arranged in parallel; one synchronous pulley 24 is sleeved at the other end of the first rotating shaft 21, and the other synchronous pulley 24 is sleeved on the second rotating shaft 23; the synchronous belt 25 is used to connect the pair of synchronous pulleys 24. In this embodiment, by using the synchronous pulleys 24, the synchronous belt 25, the first gear 12 and the second gear 22, the torque output by the motor is amplified, so that the resistance provided by the whole system to the outside is large enough. At the same time, the connection method using the synchronous pulleys 24 and the synchronous belt 25 belongs to a soft connection, and the generated noise is very small, which can meet the requirement of low noise in the fitness field.

[0029] Furthermore, as shown in Figure 2 , the first gear 12 and the second gear 22 are humanoid helical gears, which can achieve efficient, stable and quiet transmission.

[0030] Furthermore, the module number of the second gear 22 is greater than that of the first gear 12, and the primary amplification of the torque can be achieved through the first gear 12 and the second gear 22.

[0031] Furthermore, the diameter of the synchronous pulley 24 sleeved on the first rotating shaft 21 is smaller than the diameter of the synchronous pulley 24 sleeved on the second rotating shaft 23, which can achieve further amplification of the torque, that is, the secondary amplification of the torque. In this embodiment, a small-power servo motor can provide a large resistance. Through the multi-stage amplification of the torque by the small-power servo motor, the torque finally acting on the magnetic powder clutch becomes larger, and a large resistance can be achieved. There is no need to use a high-power servo motor to provide a large resistance. At the same time, since a servo motor is used, during resistance recovery, the speed control of the resistance recovery can also be achieved. The faster the rotation speed of the servo motor, the faster the resistance recovery speed, and vice versa.

[0032] Furthermore, as shown in Figure 1 and 2As shown, the torque transmission module 2 further includes: a tension pulley 26, which is arranged between a pair of synchronous pulleys 24, and the tension pulley 26 is in contact with the synchronous belt 25. The tension pulley 26 is used to achieve the tensioning of the synchronous belt 25.

[0033] Further, as Figure 1 , 2 shown, the resistance control module 3 is a magnetic powder clutch. The magnetic powder clutch is sleeved on the second rotating shaft 23, and the magnetic powder clutch is also connected to the wire reel. A rope is connected to the wire reel. In this embodiment, the magnetic powder clutch controls the resistance of the entire system. When different magnitudes of resistance are required, only the corresponding current needs to be provided to the magnetic powder clutch, and the entire system can provide the required constant resistance to the outside world through the control of the magnetic powder clutch for the user to select. Moreover, this constant resistance is easier to adjust and control than the resistance generated by traditional counterweights.

[0034] When the user is training, by controlling the rotation of the servo motor, the first gear 12 is driven to rotate. The first gear 12 drives the second gear 22 to rotate. The second gear 22 and the first rotating shaft 21 rotate together. At the same time, the second gear 22 drives one of the synchronous pulleys 24 arranged coaxially to rotate. Through the synchronous belt 25, the other synchronous pulley 24 located on the second rotating shaft 23 is driven to rotate. When the synchronous pulley 24 rotates, it drives the second rotating shaft 23 to rotate together. The second rotating shaft 23 finally drives the input end of the magnetic powder clutch to rotate. At this time, there is no input current to the magnetic powder clutch, and there is no resistance transmission at the output end of the magnetic powder clutch. Then the user controls the magnitude of the current input to the magnetic powder clutch to control the magnitude of the constant resistance output by the entire system to the outside world. When the force exerted by the user during the confrontation training is greater than this constant resistance, at this time, the wire reel connected to the output end of the magnetic powder clutch rotates in the opposite direction to the input end of the magnetic powder clutch, and the rope is pulled out; when the force exerted by the user during the confrontation training is less than this constant resistance, at this time, the wire reel connected to the output end of the magnetic powder clutch rotates in the same direction and at the same speed as the input end of the magnetic powder clutch, and the rope is recovered, and the recovery speed can be controlled by the servo motor.

[0035] As described above, with reference to Figure 1 , 2 the resistance system with multi-stage torque adjustment according to the embodiment of the present invention is described. It can output a constant adjustable resistance, and the noise generated by it is small; the speed of recovering the resistance is controllable; and when it is necessary to output a very large constant resistance, it can be achieved without using a high-power servo motor, ensuring the convenience of use.

[0036] It should be noted that in this specification, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0037] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be construed as a limitation on the present utility model. After those skilled in the art have read the above content, various modifications and alternatives to the present utility model will be obvious. Therefore, the protection scope of the present utility model shall be defined by the appended claims.

Claims

1. A resistance system with multi-stage torque adjustment, used for fitness equipment, characterized in that: Include: A resistance module, the resistance module is used to provide resistance and speed when the resistance is recovered; A torque transmission module, one end of which is connected to the output end of the resistance module, and the torque transmission module is used to transmit the resistance output by the resistance module; A resistance control module, wherein the input end of the resistance control module is connected to the other end of the torque transmission module, and the output end of the resistance control module is connected to an external take-up reel.

2. The multi-stage torque-adjustable resistance system according to claim 1, characterized in that: The resistance module comprises: a power element and a first gear, and the output end of the power element is provided with the first gear.

3. The multi-stage torque-adjustable resistance system according to claim 2, characterized in that: The torque transmission module comprises: The first rotating shaft; a second gear, the second gear being sleeved on one end of the first rotating shaft and meshing with the first gear; a second rotating shaft, the second rotating shaft being arranged in parallel with the first rotating shaft; A pair of synchronous wheels, one of which is sleeved on the other end of the first rotating shaft, and the other of which is sleeved on the second rotating shaft; A synchronous belt is used to connect the pair of synchronous wheels.

4. The multi-stage torque-adjustable resistance system according to claim 3, characterized in that: The first gear and the second gear are anthropomorphic helical gears.

5. The multi-stage torque-adjustable resistance system according to claim 4, characterized in that: The module of the second gear is greater than the module of the first gear.

6. The multi-stage torque-adjustable resistance system according to claim 3, characterized in that: The diameter of the synchronous wheel sleeved on the first rotating shaft is smaller than the diameter of the synchronous wheel sleeved on the second rotating shaft.

7. The multi-stage torque-adjustable resistance system according to any one of claims 3 to 6, characterized in that: The torque transmission module further comprises: a tension wheel, which is arranged between the pair of synchronous wheels and contacts the synchronous belt.

8. The multi-stage torque-adjustable resistance system according to claim 3, characterized in that: The resistance control module is a magnetic powder clutch, and the magnetic powder clutch is sleeved on the second rotating shaft.

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