TWM669095U - Resistance mechanism with self-locking function - Google Patents

Abstract

A resistance mechanism with a self-locking function is used in a fitness equipment, comprising a motor, a winding mechanism and a self-locking driving mechanism. The self-locking driving mechanism is arranged within the span of a winding space. The self-locking driving mechanism comprises a driving unit and a second locking matching unit. The driving unit is used to drive the second locking matching unit to engage or separate with the first locking matching unit, thereby performing locking and unlocking operations on the rotation of the winding mechanism. The self-locking driving mechanism is located within the span of the winding space, so that the winding space can be used to arrange the self-locking driving mechanism, so that the overall size of the resistance mechanism with the self-locking function is smaller, which is beneficial to full utilization of the space of the fitness equipment and miniaturization of the product.

Description

Resistance mechanism with self-locking function

The present invention relates to a resistance mechanism, in particular a resistance mechanism with a self-locking function.

Existing fitness equipment, such as stretching trainers, usually requires a mechanism to provide movement resistance. The resistance mechanism is usually an elastic component, a weight block or a resistance wheel. In recent years, there are also fitness equipment that uses motors as resistance mechanisms. When using traditional weight equipment for rapid strength training, it is easy for the resistance at the weight end to increase sharply due to the increase in movement speed; using motors as the resistance mechanism of fitness equipment will not have this problem, and the resistance of the equipment can always remain balanced.

However, when the resistance motor is used as the resistance mechanism, when the fitness personnel need to leave temporarily or need to shut down the fitness equipment for something, the resistance mechanism needs to be locked to prevent the fitness equipment from being touched by children and causing safety risks. In addition, during transportation, the resistance mechanism of the fitness equipment also needs to be locked to prevent the resistance mechanism from being damaged by continuous vibration during transportation. In addition, when the fitness equipment encounters a sudden power outage or circuit failure, the resistance motor will fail due to the sudden power outage and lose resistance, causing the person who is using the sports equipment to suddenly accelerate under the action of inertia, which creates a safety risk. Therefore, how to manufacture a resistance mechanism for fitness equipment with a self-locking function, and with a higher degree of equipment integration and smaller space occupation, has always been the pursuit of the industry.

Therefore, the purpose of this new model is to provide a resistance mechanism with a self-locking function that effectively provides safety protection for users in the event of a power outage without causing them to be injured.

Therefore, the new resistance mechanism with self-locking function is used in a fitness equipment, including a motor, a winding mechanism, and a self-locking driving mechanism.

The motor is used to provide resistance in fitness equipment, and includes a stator assembly and a rotor assembly, wherein the rotor assembly can rotate relative to the stator assembly.

The winding mechanism is used to wind a rope member at the force application end. The winding mechanism is connected to the rotor assembly of the motor. The winding mechanism includes a winding drum and at least one flange baffle at the outer end of the drum. The at least one flange baffle is provided with a first locking mating unit.

The self-locking driving mechanism is used to perform locking and unlocking operations on the rotation of the rolling mechanism. The self-locking driving mechanism includes a driving unit and a second locking matching unit. The driving unit is used to drive the second locking matching unit to engage or separate with the first locking matching unit, thereby performing locking and unlocking operations on the rotation of the rolling mechanism.

The function of this new model is that when the user temporarily leaves or needs to shut down the fitness equipment, the resistance mechanism can be automatically locked to prevent the fitness equipment from being touched by children and causing safety risks.

1: Resistance mechanism

10: Shell

11: Wire outlet hole

12: Heat dissipation hole

13: Cooling fan

20: Motor

21: Stator assembly

22: Rotor assembly

30: Self-locking drive mechanism

31: Drive unit

311: Spring

312: Mounting frame

313: Electromagnetic iron assembly

32: Second locking mating unit/brake pin

321: Tail

35: Proximity switch

40: Controller

50: Hoisting mechanism

51: Reel

52: Flange baffle

521: First locking mating unit/brake pin hole

60: Guidance mechanism

61: Guide roller

70: Human-computer interaction device/jump knob display component

71: Shuttle button

72: Display device

8: Rope parts

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a three-dimensional diagram illustrating an embodiment of the resistance mechanism with a self-locking function of the present invention; FIG. 2 is an incomplete three-dimensional diagram of the embodiment; FIG. 3 is an incomplete three-dimensional diagram illustrating a motor, a winding mechanism, a guide mechanism and a self-locking drive mechanism of the embodiment; FIG. 4 is an incomplete three-dimensional diagram similar to FIG. 3, but viewed from another angle; FIG. 5 is an incomplete three-dimensional diagram illustrating the self-locking drive mechanism of the embodiment; FIG. 6 is an incomplete three-dimensional diagram similar to FIG. 5, but viewed from another angle; FIG. 7 is an incomplete three-dimensional diagram illustrating a rope member of the embodiment being threaded through a guide mechanism; and FIG. 8 is a three-dimensional diagram illustrating a variation in the embodiment.

Referring to Figures 1 to 7, an embodiment of the new resistance mechanism 1 with a self-locking function is used in a fitness equipment (not shown). The resistance mechanism 1 includes a housing 10, a motor 20, a self-locking drive mechanism 30, a controller 40, a rolling mechanism 50, a guide mechanism 60 and a shuttle knob display assembly 70. The motor 20 is used to provide resistance in the fitness equipment, for example, as a resistance source for a stretching trainer. The controller 40 is electrically connected to the motor 20 and is used to control the size or direction of the resistance provided by the motor 20.

The motor 20, the self-locking drive mechanism 30 and the controller 40 are installed in the housing 10. The housing 10 is provided with a plurality of heat dissipation holes 12 and a heat dissipation fan 13 for enhancing the heat dissipation of the motor 20, the self-locking drive mechanism 30 and the controller 40. The motor 20 includes a stator assembly 21 and a rotor assembly 22. The stator assembly 21 is fixedly mounted to the housing 10. The rotor assembly 22 can rotate relative to the stator assembly 21.

The winding mechanism 50 is used for winding a rope member 8 at the force application end. The winding mechanism 50 is connected to the rotor assembly 22 of the motor 20. The winding mechanism 50 includes a winding drum 51 and at least one flange baffle 52 at the outer end of the drum 51. The flange baffle 52 is provided with a first locking mating unit 521.

The reeling mechanism 50 is connected to the rotor assembly 22 in a transmission manner, and the reeling mechanism 50 can be directly connected to the rotor assembly 22, or the reeling mechanism 50 can be connected to the rotor assembly 22 through a speed change assembly (not shown). The reeling mechanism 50 can rotate together with the rotor assembly 22. The reeling mechanism 50 is used to wrap around the rope member 8 at the force end of the fitness equipment, thereby providing resistance for the fitness equipment. As shown in FIG1 , a wire outlet hole 11 is provided above the housing 10, so as to pass the rope member 8 out. Preferably, the motor 20 is configured as a servo motor, so that the adjustment and control of the resistance is more precise.

Referring to Figures 1 to 4, the flange baffle 52 is disposed on one side of the drum 51. In some embodiments, two flange baffles 52 may be disposed on both sides of the drum 51. The flange baffle 52 may serve as a baffle to facilitate the winding of the rope member 8 on the drum 51, and may cooperate with the self-locking drive mechanism 30 to act as a locking member when the device requires the locking.

The self-locking drive mechanism 30 is used to perform locking and unlocking operations on the rotation of the rolling mechanism 50. The self-locking drive mechanism 30 includes a drive unit 31 and a second locking mating unit 32. The drive unit 31 is used to drive the second locking mating unit 32 to engage or separate with the first locking mating unit 521, thereby performing locking and unlocking operations on the rotation of the rolling mechanism 50.

The first locking and fitting unit 521 and the second locking and fitting unit 32 are a set of pins and pin holes that can be locked and fitted with each other. In this embodiment, the first locking and fitting unit 521 is configured as a plurality of brake pin holes 521 arranged around the circumferential direction of the rotation center of the flange baffle 52. The second locking and fitting unit 32 is configured as a brake pin 32.

In some other embodiments, the self-locking drive mechanism 30 can be locked with the rotor assembly 22 of the motor 20, so that the resistance mechanism 1 is locked. However, the rotor assembly 22 of the motor 20 usually has a technical problem of large torque and high speed, which makes it difficult to lock. In this embodiment, the self-locking drive mechanism 30 cooperates with the flange baffle 52 of the winding mechanism 50 to achieve locking, and the locking torque generated is large, which makes it easier and more directly to lock and stop the winding mechanism 50, and the safety is higher.

The reel 51 and the flange baffle 52 form a winding space. The self-locking drive mechanism 30 is arranged within the span range of the winding space, that is, within the span range formed by the reel 51 and the flange baffle 52.

In some other embodiments, the self-locking drive mechanism 30 may be located outside the flange baffle 52 of the winding mechanism 50, that is, outside the range of the winding space. However, since the drum 51 is connected to one side of the rotor assembly 22 of the motor 20, there is a problem that the overall length of the motor 20 is too long; if the self-locking drive mechanism 30 is located outside the flange baffle 52 of the winding mechanism 50, the overall length of the motor 20 in the axial direction will be further increased, so that the outer dimensions of the product will be further increased. Therefore, in this embodiment, the self-locking drive mechanism 30 is arranged within the span of the winding space. Since the drum 51 has a relatively long length, the rope member 8 cannot wrap around the entire drum 51. The outer ring of the drum 51 has a remaining winding space, and the remaining winding space can be fully utilized to arrange the self-locking drive mechanism 30, so that the overall size of the product can be reduced, and the miniaturization of the product can be achieved.

Furthermore, as shown in FIG3 , the self-locking drive mechanism 30 is roughly within the axial projection range of the winding mechanism 50 or the rotor assembly 22, thereby making full use of the remaining winding space and improving the miniaturization of the product.

In addition, the self-locking driving mechanism 30 is located on the side opposite to the wire outlet direction relative to the drum 51. In this embodiment, the wire outlet direction is upward, and the self-locking driving mechanism 30 is located below the drum 51, so that the remaining winding space is fully utilized and the normal wire outlet of the rope member 8 is not interfered.

Referring to Figures 2 and 3, a guide mechanism 60 is provided between the outlet hole 11 and the drum 51. The guide mechanism 60 includes a guide roller 61. As shown in Figures 4 and 2, the rope member 8 passes through the guide roller 61 and then passes through the outlet hole 11 out of the housing 10. The guide mechanism 60 can guide the rope member 8 on the drum 51 in the process of passing through the housing 10, so that the rope member 8 can accurately align with the outlet hole 11, preventing the rope member 8 from scratching the housing 10 and causing wear and affecting the service life.

As shown in Fig. 5-Fig. 6, the driving unit 31 includes a mounting frame 312, a spring 311 and an electromagnetic iron assembly 313. The mounting frame 312 is fixedly mounted on the housing 10. The electromagnetic iron assembly 313 is electrically connected to the controller 40. The brake pin 32 can be slidably mounted on the mounting frame 312, and the brake pin 32 can slide out of one end of the mounting frame 312 and can be inserted into the brake pin hole 521. One end of the spring 311 is connected to the mounting frame 312, and the other end is connected to the brake pin 32, so as to apply an elastic force F1 to the brake pin 32 in the direction of the flange baffle 52. The electromagnetic iron assembly 313 acts on the brake pin 32 and applies an electromagnetic force F2 to the brake pin 32 in a direction away from the flange baffle 52. The electromagnetic force F2 is greater than the elastic force F1, so when the fitness equipment is powered normally, the electromagnetic iron assembly 313 is energized to generate an electromagnetic force F2 that can overcome the elastic force F1, causing the brake pin 32 to retract and separate from the brake pin hole 521 of the flange baffle 52. When the fitness equipment is suddenly powered off, the electromagnetic iron assembly 313 loses power and does not generate electromagnetic force. The brake pin 32 moves toward the flange baffle 52 under the elastic force F1 of the spring 311, so that the brake pin 32 is stuck in the corresponding brake pin hole 521 due to the elastic force F1, thereby braking the moving rotor assembly 22 and the reel 51 to stop moving, preventing the fitness equipment from losing resistance due to sudden power failure and causing safety risks. That is, the self-locking drive mechanism 30 performs a locking operation on the rotation of the winding mechanism 50 due to the power-off state. In other embodiments, the spring 311 can also be other elastic elements, such as an elastic tube. In this embodiment, the self-locking drive mechanism 30 is electrically connected to the controller 40; the self-locking drive mechanism 30 can also perform locking and unlocking operations on the rotation of the hoisting mechanism 50 after receiving the control signal from the controller 40.

In some other embodiments, each of the brake pin holes 521 can be a hole of other shapes, such as an arc-shaped long hole, so as to be more conducive to the engagement of the brake pin shaft 32 with the corresponding brake pin hole 521.

In other embodiments, the spring 311 may also be other elastic elements, such as an elastic tube. In this embodiment, the self-locking drive mechanism 30 is electrically connected to the controller 40; the self-locking drive mechanism 30 can also perform locking and unlocking operations on the rotation of the winding mechanism 50 after receiving the control signal of the controller 40. When the fitness equipment is set to at least one of the following states, the controller 40 sends a control signal to perform a locking operation on the rotation of the winding mechanism 50: temporary leave state, shutdown state or transportation state. In this way, when the fitness personnel need to leave temporarily or need to shut down the fitness equipment, they can actively lock the resistance mechanism 1 to prevent the fitness equipment from being touched by children and causing safety risks. In addition, during transportation, the resistance mechanism 1 of the fitness equipment can also be actively locked to prevent the resistance mechanism 1 from being damaged by continuous vibration during transportation.

Referring to Fig. 1-Fig. 2, the resistance mechanism 1 further includes a human-machine interaction device 70. The human-machine interaction device 70 is arranged on the housing 10 to adjust and display the working parameters of the resistance mechanism 1'. The human-machine interaction device 70 is configured as a shuttle display assembly 70, which is electrically connected to the controller 40 and includes a shuttle 71 and a display device 72 arranged on the front of the shuttle 71. The shuttle 71 can be used to adjust various working parameters of the resistance mechanism 1, such as resistance, number of times and power. The display device 72, such as an electronic watch, can display multiple data such as resistance, number of times, power, maximum explosive force, etc. In some other embodiments, referring to FIG. 8 , a resistance mechanism 1 'may also not be provided with the shuttle knob display assembly 70, and control and display may be achieved through the overall control of the fitness equipment itself and the display device 72.

In other embodiments, the self-locking drive mechanism 30 may be a friction clutch mechanism or a magnetic clutch mechanism. That is, the self-locking drive mechanism 30 brakes and stops the winding mechanism 50 through the friction clutch mechanism or the magnetic clutch mechanism.

In this embodiment, the reel 51 is connected to one side of the rotor assembly 22 of the motor 20, and the flange baffle 52 is provided on the side of the reel 51 away from the motor 20, so that the brake pin hole 521 can be closer to the rotation center and arranged along the circumferential direction of the flange baffle 52, and the self-locking drive mechanism 30 cooperates with the brake pin hole 521, so that the overall product size is more compact and the space utilization rate is higher.

In this embodiment, the reel 51 is connected to one side of the rotor assembly 22 of the motor 20, and a flange baffle 52 is provided on the side of the reel 51 away from the motor 20, so that the brake pin hole 521 can be closer to the rotation center and arranged along the circumferential direction of the flange baffle 52, and the self-locking drive mechanism 30 cooperates with the brake pin hole 521, so that the overall product size is more compact and the space utilization rate is higher.

Of course, in some embodiments, the housing 10 may not be provided, and the motor 20, the self-locking drive mechanism 30, the controller 40 and the rolling mechanism 50 may be directly integrated into the fitness equipment, which is also a feasible technical solution.

Referring to Figures 5 and 6, a proximity switch 35 is also provided at the other end of the mounting frame 312. The proximity switch 35 can be a photoelectric switch, etc. When the brake pin shaft 32 retracts and separates from the brake pin hole 521, a tail 321 of the brake pin shaft 32 extends out of the mounting frame 312 and activates the proximity switch 35 to generate an electrical signal. The proximity switch 35 is connected to the controller 40. The controller 40 controls the motor 20 to start only after receiving the electrical signal generated by the proximity switch 35. This prevents the motor 20 from being started when the brake pin shaft 32 is stuck in the corresponding brake pin hole 521, thereby preventing damage to the equipment and related safety risks.

Through the above description, the advantages of the aforementioned embodiments can be summarized as follows:

1. When the fitness person needs to leave temporarily or needs to shut down the fitness equipment, the resistance mechanism 1 can be locked actively to prevent the fitness equipment from being touched by children and causing safety risks. In addition, during transportation, the resistance mechanism 1 of the fitness equipment can also be locked actively to prevent the resistance mechanism 1 from being damaged by continuous vibration during transportation.

2. The new self-locking drive mechanism 30 cooperates with the flange baffle 52 of the winding mechanism 50 to achieve locking, and the generated locking torque is large, which makes it easier and more direct to lock and stop the winding mechanism 50, and has higher safety.

3. The self-locking driving mechanism 30 is located within the span of the winding space, so that the winding space can be used to arrange the self-locking driving mechanism 30, making the overall size of the resistance mechanism 1 with a self-locking function smaller, which is conducive to full utilization of the space of the fitness equipment and miniaturization of the product.

4. When the fitness equipment is suddenly powered off, the electromagnetic iron assembly 313 loses power and does not generate electromagnetic force. The brake pin 32 moves toward the flange baffle 52 under the elastic force of the spring 311, so that the brake pin 32 is stuck in the brake pin hole 521 due to the elastic force, thereby braking the moving rotor assembly 22 and the winding mechanism 50 to stop moving, preventing the fitness equipment from losing resistance due to sudden power failure and causing safety risks.

5. The reel 51 is connected to one side of the rotor assembly 22 of the motor, and the flange baffle 52 is arranged on the side of the reel 51 away from the motor 20, so that the brake pin hole 521 of the flange baffle 52 can be closer to the rotation center and arranged along the circumferential direction of the flange baffle 52, and the self-locking drive mechanism 30 cooperates with the corresponding brake pin hole 521, so that the overall product size is more compact and the space utilization rate is higher.

However, the above is only an example of the implementation of this new model, and it cannot be used to limit the scope of the implementation of this new model. All simple equivalent changes and modifications made according to the scope of the patent application of this new model and the content of the patent specification are still within the scope of this new patent.

1: Resistance mechanism

10: Shell

11: Wire outlet hole

12: Heat dissipation hole

13: Cooling fan

20: Motor

30: Self-locking drive mechanism

40: Controller

50: Hoisting mechanism

52: Flange baffle

521: First locking mating unit/brake pin hole

60: Guidance mechanism

61: Guide roller

70: Human-computer interaction device/jump knob display component

71: Shuttle button

72: Display device

8: Rope parts

Claims (12)

A resistance mechanism with a self-locking function, used in a fitness equipment, comprising: a motor, used to provide resistance in the fitness equipment, including a stator assembly and a rotor assembly, the rotor assembly being able to rotate relative to the stator assembly; a winding mechanism, used to wind a rope member at the force application end, the winding mechanism being transmission-connected to the rotor assembly of the motor, the winding mechanism including a winding drum and at least one flange baffle at the outer end of the drum, the at least one flange baffle being provided with a first locking mating unit; and A self-locking driving mechanism is used to perform locking and unlocking operations on the rotation of the rolling mechanism. The self-locking driving mechanism includes a driving unit and a second locking matching unit. The driving unit is used to drive the second locking matching unit to engage or separate with the first locking matching unit, thereby performing locking and unlocking operations on the rotation of the rolling mechanism. A resistance mechanism with a self-locking function as described in claim 1, wherein the drum and the at least one flange baffle form a winding space, and the self-locking drive mechanism is arranged within the span of the winding space. The resistance mechanism with a self-locking function as described in claim 2 also includes a housing, in which the motor, the winding mechanism and the self-locking drive mechanism are installed, and a wire outlet hole is provided on the housing. A guide mechanism is provided between the wire outlet hole and the reel, and the guide mechanism includes a guide roller. A resistance mechanism with a self-locking function as described in claim 2, wherein the self-locking drive mechanism is roughly within the axial projection range of the rolling mechanism. A resistance mechanism with a self-locking function as described in claim 2, wherein the first locking mating unit and the second locking mating unit are a set of pins and pin holes that can be locked and mated with each other. The resistance mechanism with self-locking function as described in claim 5, wherein the first locking mating unit is a brake pin hole arranged around the circumferential direction of the rotation center of the flange baffle, the second locking mating unit is a brake pin shaft, the driving unit includes a mounting frame, an elastic element and an electromagnetic iron assembly, and the brake pin shaft can be slidably mounted on the mounting frame The elastic element is connected to the mounting frame and can be inserted into the brake pin hole. One end of the elastic element is connected to the mounting frame, and the other end is connected to the brake pin shaft, thereby applying an elastic force toward the at least one flange baffle to the brake pin shaft. The electromagnetic iron assembly acts on the brake pin shaft and applies an electromagnetic force away from the flange baffle to the brake pin shaft, and the electromagnetic force is greater than the elastic force. A resistance mechanism with a self-locking function as described in claim 6, wherein a proximity switch is also provided at the other end of the mounting frame, and when the brake pin shaft retracts and separates from the brake pin hole, the tail of the brake pin shaft can actuate the proximity switch. A resistance mechanism with a self-locking function as described in claim 2, wherein the self-locking drive mechanism is located on the side of the reel opposite to the line output direction. The resistance mechanism with a self-locking function as described in claim 1 further includes a controller, and the motor and the self-locking drive mechanism are electrically connected to the controller. When the self-locking drive mechanism receives a control signal from the controller, it performs a locking and unlocking operation on the rotation of the winding mechanism, or performs a locking operation on the rotation of the winding mechanism when the power is off. A resistance mechanism with a self-locking function as described in claim 9, wherein when the fitness equipment is set to at least one of a temporary leave state, a shutdown state, and a transportation state, the controller sends a control signal to perform a locking operation on the rotation of the winding mechanism. A resistance mechanism with a self-locking function as described in claim 1, wherein the reel is connected to one side of the rotor assembly of the motor, and the flange baffle is provided on a side of the reel away from the motor. The resistance mechanism with a self-locking function as described in claim 1 also includes a shell and a human-machine interaction device. The motor, the hoisting mechanism and the self-locking drive mechanism are all installed in the shell. The human-machine interaction device is arranged on the shell to adjust and display the working parameters of the resistance mechanism.

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