Resistance mechanism with self-locking function

Abstract

The utility model provides a resistance mechanism with a self-locking function, which is used in fitness equipment, and comprises a motor, a hoisting mechanism and a self-locking driving mechanism, the self-locking driving mechanism is used for locking and unlocking the rotation of the hoisting mechanism, the self-locking driving mechanism is arranged in the span range of a winding space, and the self-locking driving mechanism is connected with the motor. The self-locking driving mechanism comprises a driving unit and a second locking matching unit, and the driving unit is used for driving the second locking matching unit to be connected with or separated from the first locking matching unit, so that the rotation of the hoisting mechanism is locked and unlocked. The self-locking driving mechanism is located in the span range of the winding space, so that the winding space can be used for arranging the self-locking driving mechanism, the overall size of the resistance mechanism with the self-locking function is smaller, and full utilization of the space of fitness equipment and miniaturization of products are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, and in particular to a resistance mechanism for fitness equipment with a self-locking function. The design effectively provides safety protection for users in the event of a power outage so that they will not be injured. Background Art

[0002] Existing fitness equipment, such as stretching machines, typically requires a mechanism to provide motion resistance, typically in the form of elastic components, weights, or resistance wheels. In recent years, fitness equipment that utilizes motors as resistance mechanisms has also emerged. When using traditional weights for rapid strength training, the increased speed of movement often leads to a sharp increase in resistance at the weight end. Using motors as resistance mechanisms, however, eliminates this problem, ensuring that the resistance remains balanced.

[0003] However, when using a resistance motor as the resistance mechanism, when the fitness person needs to temporarily leave or 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 using the exercise equipment to suddenly accelerate under the action of inertia, creating a safety risk. Therefore, how to manufacture a resistance mechanism for fitness equipment with a self-locking function, with higher equipment integration and smaller space occupation, has always been the pursuit of the industry. Utility Model Content

[0004] Therefore, in order to solve the above problems, the present invention provides a resistance mechanism with a self-locking function.

[0005] The utility model is implemented by the following scheme:

[0006] The utility model provides a resistance mechanism with a self-locking function, which is used in fitness equipment and includes:

[0007] A motor for providing resistance in a fitness device, the motor comprising a stator assembly and a rotor assembly, the rotor assembly being rotatable relative to the stator assembly;

[0008] a hoisting mechanism for winding the rope member at the force-applying end, the hoisting mechanism being in driving connection with the rotor assembly of the motor, the hoisting mechanism comprising a winding drum for winding the wire and a flange baffle located at the outer end of the drum, at least one of the flange baffles being provided with a first locking engagement unit;

[0009] A self-locking drive mechanism is used to lock and unlock the rotation of the hoisting mechanism. The self-locking drive mechanism includes a drive unit and a second locking mating unit. The drive unit is used to drive the second locking mating unit to engage or disengage with the first locking mating unit, thereby locking and unlocking the rotation of the hoisting mechanism.

[0010] In one embodiment, the reel and the flange baffle form a winding space, and the self-locking drive mechanism is arranged within the span of the winding space.

[0011] In one embodiment, a shell is further included, in which the motor, the hoisting mechanism and the self-locking drive mechanism are installed. A wire outlet hole is provided on the shell, and a guide mechanism is provided between the wire outlet hole and the reel, and the guide mechanism includes a guide roller.

[0012] In one embodiment, the self-locking drive mechanism is roughly within the axial projection range of the hoisting mechanism.

[0013] In one embodiment, the first locking and fitting unit and the second locking and fitting unit are a set of pin shafts and pin holes that can be locked and fitted with each other.

[0014] In one embodiment, the first locking and fitting unit is a brake pin hole arranged in the circumferential direction of the rotation center of the flange baffle, and the second locking and fitting unit is a brake pin shaft; the driving unit includes a mounting frame, an elastic element and an electromagnet assembly, the brake pin shaft is slidably mounted on the mounting frame, and the brake pin shaft can slide and be stuck in 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 to the brake pin shaft toward the flange baffle; the electromagnet assembly acts on the brake pin shaft and applies an electromagnetic force to the brake pin shaft away from the flange baffle, and the electromagnetic force is greater than the elastic force.

[0015] In one embodiment, a proximity switch is further provided at the other end of the mounting bracket, 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.

[0016] In one embodiment, the self-locking drive mechanism is located on a side of the reel opposite to the line outlet direction.

[0017] In one embodiment, the system further includes a controller, the motor and the self-locking drive mechanism are electrically connected to the controller; the self-locking drive mechanism receives a control signal from the controller to perform locking and unlocking operations on the rotation of the hoisting mechanism; and / or

[0018] The self-locking drive mechanism performs an operation of locking the rotation of the hoisting mechanism due to a power-off state.

[0019] In one embodiment, when the fitness equipment is set to at least one of the following states, the controller sends the control signal to lock the rotation of the hoisting mechanism: temporary leaving state, shutdown state or transportation state.

[0020] In one embodiment, the drum is connected to one side of the rotor assembly of the motor, and the flange baffle is provided on the side of the drum away from the motor.

[0021] In one embodiment, the resistance mechanism further includes a shell and a human-computer interaction device, the motor, hoisting mechanism and self-locking drive mechanism are all installed in the shell, and the human-computer interaction device is arranged on the shell for adjusting and displaying the working parameters of the resistance mechanism.

[0022] The technical solution provided by the utility model has the following technical effects:

[0023] 1. The resistance mechanism with a self-locking function of the present invention includes a self-locking drive mechanism for locking and unlocking the rotation of the hoisting mechanism. The hoisting mechanism includes a winding drum for winding a wire and a flange baffle located at the outer end of the drum. At least one flange baffle is provided with a first locking mating unit. The self-locking drive mechanism includes a drive unit and a second locking mating unit. The drive unit is configured to drive the second locking mating unit to engage or disengage with the first locking mating unit, thereby locking and unlocking the rotation of the hoisting mechanism. In this way, when a fitness user needs to temporarily leave or shut down the fitness equipment for an emergency, they can actively lock the resistance mechanism to prevent the fitness equipment from being touched by children and posing a safety risk. In addition, the resistance mechanism of the fitness equipment can also be actively locked during transportation to prevent damage to the resistance mechanism caused by continuous vibration during transportation.

[0024] 2. The self-locking drive mechanism of the utility model cooperates with the flange baffle of the winch mechanism to achieve locking, and the locking torque generated is large, which makes it easier and more direct to lock and stop the winch mechanism, and has higher safety.

[0025] 3. The self-locking drive mechanism is located within the span of the winding space, so that the winding space can be used to arrange the self-locking drive mechanism, making the overall size of the resistance mechanism with a self-locking function smaller, which is conducive to full space utilization of fitness equipment and miniaturization of the product.

[0026] 4. The self-locking resistance mechanism of the present invention employs an elastic element that applies a spring force toward the flange baffle to the brake pin, while the electromagnet assembly applies an electromagnetic force away from the flange baffle. This electromagnetic force is greater than the spring force. Consequently, when the fitness device is powered normally, the electromagnet assembly is energized and generates an electromagnetic force that overcomes the spring force, causing the brake pin to retract and separate from the brake pin hole in the flange baffle. If the fitness device suddenly loses power, the electromagnet assembly loses power and generates no electromagnetic force. The brake pin, under the action of the spring force, moves toward the flange baffle, causing it to engage in the brake pin hole due to the spring force. This brakes the moving rotor assembly and winch mechanism, stopping them. This prevents the fitness device from suddenly losing resistance and creating safety risks.

[0027] 5. The reel is connected to one side of the rotor assembly of the motor, and a flange baffle is provided on the side of the reel away from the motor, so that the brake pin hole of the flange baffle can be closer to the center of rotation and arranged along the circumferential direction of the flange baffle, and the self-locking drive mechanism cooperates with the brake pin hole, so that the overall product size is more compact and the space utilization rate is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional diagram of the resistance mechanism of this embodiment;

[0029] Figure 2 is a perspective view of the resistance mechanism of this embodiment with part of the housing removed;

[0030] Figure 3 is a three-dimensional diagram of the motor, hoisting mechanism, guide mechanism and self-locking drive mechanism of this embodiment;

[0031] Figure 4 1 is an exploded view of the motor, hoisting mechanism and self-locking drive mechanism of this embodiment;

[0032] Figure 5 is a perspective view of the self-locking drive mechanism of this embodiment;

[0033] Figure 6 This is a three-dimensional view of the self-locking drive mechanism of this embodiment from another direction;

[0034] Figure 7 is a perspective view of the rope member of this embodiment being passed through the guide mechanism;

[0035] Figure 8 It is a three-dimensional diagram of the resistance mechanism of another embodiment. DETAILED DESCRIPTION

[0036] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0037] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0038] like Figure 1-7 As shown, the present invention provides a resistance mechanism 1 with a self-locking function for use in fitness equipment. The mechanism comprises a housing 10, a motor 20, a self-locking drive mechanism 30, a controller 40, a hoisting 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, such as a resistance source for a stretching trainer. The controller 40 is electrically connected to the motor 20 and is used to control the magnitude and direction of the resistance provided by the motor 20.

[0039] The motor 20, self-locking drive mechanism 30, and controller 40 are mounted within a housing 10. The housing 10 is provided with heat dissipation holes 12 and a cooling fan 13 to enhance heat dissipation from the motor 20, self-locking drive mechanism 30, and 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 is rotatable relative to the stator assembly 21.

[0040] The hoisting mechanism 50 is used for winding the rope member at the force-applying end. The hoisting mechanism 50 is transmission-connected to the rotor assembly 22 of the motor 20. The hoisting mechanism 50 includes a reel 51 for winding and a flange baffle 52 located at the outer end of the reel. A first locking mating unit 521 is provided on at least one flange baffle 52.

[0041] The hoisting mechanism 50 is connected to the rotor assembly 22 in a transmission manner. The hoisting mechanism 50 can be directly connected to the rotor assembly 22 or connected to the rotor assembly 22 through a speed change assembly. The hoisting mechanism 50 can rotate together with the rotor assembly 22. The hoisting mechanism 50 is used to wind the rope member at the force-applying end of the fitness equipment, thereby providing resistance to the fitness equipment. Figure 1 As shown, a wire hole 11 is provided above the housing 10 for passing the rope member through. Preferably, the motor 20 is a servo motor, so that the adjustment and control of the resistance is more precise.

[0042] like Figure 1-4As shown, a flange baffle 52 is provided on one side of the drum 51. In some embodiments, flange baffles 52 may be provided on both sides of the drum 51. The flange baffle 52 can serve as a baffle to facilitate the winding of the tension rope on the drum 51, and can cooperate with the self-locking drive mechanism 30 to act as a locking member when the device needs to be locked.

[0043] The self-locking drive mechanism 30 is used to lock and unlock the rotation of the hoisting mechanism 50. The self-locking drive mechanism 30 includes a drive unit 31 and a second locking and engaging unit 32. The drive unit 31 is used to drive the second locking and engaging unit 32 to engage or disengage with the first locking and engaging unit 521, thereby locking and unlocking the rotation of the hoisting mechanism 50.

[0044] The first locking and mating unit 521 and the second locking and mating unit 32 are a set of pins and pin holes that can lock and mat with each other. In this embodiment, the first locking and mating unit 521 is a brake pin hole 521 arranged in the circumferential direction around the rotation center of the flange baffle 52, and the second locking and mating unit 32 is a brake pin 32.

[0045] In other embodiments, the self-locking drive mechanism 30 can be locked with the rotor assembly 22 of the motor 20, thereby locking the resistance mechanism 1. However, the rotor assembly 22 of the motor 20 typically has high torque and high speed, making it difficult to lock. In this embodiment, the self-locking drive mechanism 30 is locked by cooperating with the flange baffle 52 of the hoisting mechanism 50. The generated locking torque is large, making it easier and more direct to lock the hoisting mechanism 50 and improve safety.

[0046] The reel 51 and the flange baffle 52 form a winding space, and the self-locking drive mechanism 30 is arranged within the span of the winding space, that is, within the span formed by the reel 51 and the flange baffle 52 .

[0047] In some other embodiments, the self-locking drive mechanism 30 can be located outside the flange baffle 52 of the hoisting 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 hoisting mechanism 50, the overall length of the motor 20 in the axial direction will be further increased, so that the external 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 long length, the rope member cannot be wound around the entire drum 51. The outer ring of the drum 51 has a remaining winding space. 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 product can be miniaturized.

[0048] Further, if Figure 3 As shown, the self-locking drive mechanism 30 is roughly within the axial projection range of the hoisting mechanism 50 or the rotor assembly 22, thereby fully utilizing the remaining winding space and improving the miniaturization of the product.

[0049] Furthermore, the self-locking drive mechanism 30 is located on the side opposite to the wire-out direction relative to the drum 51. In this embodiment, the wire-out direction is upward, and the self-locking drive mechanism 30 is located below the drum 51, thereby fully utilizing the remaining winding space without interfering with the normal wire-out of the rope member.

[0050] Reference Figure 2-3 A guide mechanism 60 is provided between the outlet hole 11 and the reel 51, and the guide mechanism 60 includes a guide roller 61. Figure 2 、 7 As shown, the rope passes around the guide roller 61 and then passes out of the housing 10 through the outlet hole 11. The guide mechanism 60 can guide the rope on the reel 51 during the process of passing through the housing 10, so that the rope can be accurately aligned with the outlet hole 11, preventing the rope from scratching the housing 10 and causing wear and tear, which would affect the service life.

[0051] like Figure 5-6As shown, the drive unit 31 includes a mounting bracket 312, a spring 311, and an electromagnet assembly 313. The mounting bracket 312 is fixedly mounted on the housing 10. The electromagnet assembly 313 is electrically connected to the controller 40. The brake pin 32 is slidably mounted on the mounting bracket 312, and can slide out of one end of the mounting bracket 312 and engage the brake pin hole 521. The spring 311 is connected to the mounting bracket 312 at one end and to the brake pin 32 at the other end, thereby applying an elastic force F1 toward the flange baffle 52. The electromagnet assembly 313 acts on the brake pin 32 and applies an electromagnetic force F2 away from the flange baffle 52. The electromagnetic force F2 is greater than the elastic force F1. Therefore, when the fitness device is powered normally, the electromagnet assembly 313 is energized and generates an electromagnetic force F2 that overcomes 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 device suddenly loses power, the electromagnet assembly 313 loses power and no longer generates electromagnetic force. The brake pin 32, under the action of the elastic force F1 of the spring 311, moves toward the flange baffle 52, causing the brake pin 32 to engage with the brake pin hole 521 due to the elastic force F1. This brakes the moving rotor assembly 22 and reel 51, preventing them from losing resistance and creating safety risks. In other words, the self-locking drive mechanism 30 locks the rotation of the hoist mechanism 50 due to the power outage.

[0052] In some other embodiments, the brake pin hole 521 may be a hole of other shapes, such as an arc-shaped long hole, which is more conducive to the engagement between the brake pin shaft 32 and the brake pin hole 521.

[0053] In other embodiments, the spring 311 may also be other elastic elements, such as an elastic tube.

[0054] In this embodiment, the self-locking drive mechanism 30 is electrically connected to the controller 40; upon receiving a control signal from the controller 40, the self-locking drive mechanism 30 can lock and unlock the rotation of the hoisting mechanism 50. The controller 40 issues a control signal to lock the rotation of the hoisting mechanism when the fitness equipment is in at least one of the following states: temporary departure, shutdown, or transport. This allows users to proactively lock the resistance mechanism when temporarily leaving or shutting down the fitness equipment to prevent children from touching it and posing a safety risk. Furthermore, the resistance mechanism can also be proactively locked during transport to prevent damage from continuous vibration during transport.

[0055] Reference Figure 1-2The resistance mechanism 1 also includes a human-machine interaction device 70, which is provided on the housing 10 for adjusting and displaying the working parameters of the resistance mechanism 1. The human-machine interaction device 70 is specifically a shuttle knob display assembly 70, which is electrically connected to the controller 40. The shuttle knob display assembly 70 includes a shuttle knob and a display device provided on the front of the shuttle knob. The shuttle knob can be used to adjust the various working parameters of the resistance mechanism 1, such as resistance, number of times and power, etc. A display device, such as an electronic watch, is provided on the front of the shuttle knob, which can display multiple data such as resistance, number of times, power, maximum explosive force, etc. In some other embodiments, refer to Figure 8 The resistance mechanism 1' may also not be provided with the shuttle knob display assembly 70, and control and display can be achieved through the overall control and display device of the fitness equipment itself.

[0056] 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 the hoisting mechanism 50 by the friction clutch mechanism or the magnetic clutch mechanism.

[0057] 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 center of rotation and arranged along the circumferential direction of the flange baffle 52. 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.

[0058] 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 hoisting mechanism 50 may be directly integrated into the fitness equipment, which is also a feasible technical solution.

[0059] like Figure 5-6 As shown, a proximity switch 35 is also installed at the other end of the mounting bracket 312. The proximity switch 35 can be a photoelectric switch, for example. When the brake pin 32 retracts and separates from the brake pin hole 521, the tail 321 of the brake pin 32 extends out of the mounting bracket 312 and activates the proximity switch 35 to generate an electrical signal. The proximity switch 35 is connected to the controller 40, which activates the motor 20 only after receiving the electrical signal generated by the proximity switch 35. This prevents the motor 20 from being activated if the brake pin 32 is stuck in the brake pin hole 521, which could cause damage to the equipment and associated safety risks.

[0060] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A resistance mechanism with a self-locking function, used in fitness equipment, characterized in that: include: A motor for providing resistance in a fitness device, the motor comprising a stator assembly and a rotor assembly, the rotor assembly being rotatable relative to the stator assembly; a hoisting mechanism for winding the rope member at the force-applying end, the hoisting mechanism being in driving connection with the rotor assembly of the motor, the hoisting mechanism comprising a winding drum for winding the wire and a flange baffle located at the outer end of the drum, at least one of the flange baffles being provided with a first locking engagement unit; A self-locking drive mechanism is used to lock and unlock the rotation of the hoisting mechanism. The self-locking drive mechanism includes a drive unit and a second locking mating unit. The drive unit is used to drive the second locking mating unit to engage or disengage with the first locking mating unit, thereby locking and unlocking the rotation of the hoisting mechanism.

2. The resistance mechanism according to claim 1, characterized in that: The reel and the flange baffle form a winding space, and the self-locking drive mechanism is arranged within the span of the winding space.

3. The resistance mechanism according to claim 2, characterized in that: It also includes a shell, the motor, the hoisting mechanism and the self-locking drive mechanism are installed in the shell, the shell is provided with a wire outlet hole, a guide mechanism is provided between the wire outlet hole and the reel, and the guide mechanism includes a guide roller.

4. The resistance mechanism according to claim 2, characterized in that: The self-locking drive mechanism is roughly within the axial projection range of the hoisting mechanism.

5. The resistance mechanism according to claim 2, characterized in that: The first locking and fitting unit and the second locking and fitting unit are a set of pin shafts and pin holes that can be locked and fitted with each other.

6. The resistance mechanism according to claim 5, characterized in that: The first locking and fitting unit is a brake pin hole arranged in the circumferential direction of the rotation center of the flange baffle, and the second locking and fitting unit is a brake pin shaft; the driving unit includes a mounting frame, an elastic element and an electromagnet assembly, the brake pin shaft can be slidably mounted on the mounting frame, and the brake pin shaft can slide and be stuck in 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 to the brake pin shaft toward the flange baffle; the electromagnet assembly acts on the brake pin shaft and applies an electromagnetic force to the brake pin shaft away from the flange baffle, and the electromagnetic force is greater than the elastic force.

7. The resistance mechanism according to claim 6, characterized in that: A proximity switch is also provided at the other end of the mounting bracket. 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.

8. The resistance mechanism according to claim 2, characterized in that: The self-locking drive mechanism is located on a side of the drum opposite to the line outlet direction.

9. The resistance mechanism according to claim 1, characterized in that: The system further includes a controller, the motor and the self-locking drive mechanism being electrically connected to the controller; the self-locking drive mechanism receiving a control signal from the controller thereby performing locking and unlocking operations on the rotation of the hoisting mechanism; and / or The self-locking drive mechanism performs an operation of locking the rotation of the hoisting mechanism due to a power-off state.

10. The resistance mechanism according to claim 9, characterized in that: The controller sends the control signal for locking the rotation of the hoisting mechanism when the fitness equipment is set to at least one of the following states: a temporary leaving state, a power-off state, or a transporting state.

11. The resistance mechanism according to claim 1, characterized in that: The reel is connected to one side of the rotor assembly of the motor, and the flange baffle is provided on the side of the reel away from the motor.

12. The resistance mechanism according to claim 1, characterized in that: The resistance mechanism also includes a shell and a human-machine interaction device. The motor, hoisting mechanism and 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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