Resistance mechanism for fitness equipment

Abstract

The utility model provides a resistance mechanism for fitness equipment, which comprises a shell, a resistance mechanism, a power mechanism and a driving mechanism, wherein a wire outlet hole is formed in the upper part of the shell; the motor is used for providing resistance in the fitness equipment, the motor is installed at the bottom of the shell, the motor comprises a stator assembly and a rotor assembly, and the rotor assembly can rotate relative to the stator assembly; the hoisting mechanism is used for winding a rope piece at a force application end, and the hoisting mechanism is arranged in the shell and is in transmission connection with one side of the motor; the guide mechanism is arranged in the shell and is positioned between the wire outlet hole and the hoisting mechanism; and the controller is installed in the shell and located above the motor, so that the internal space of the shell can be reasonably utilized, and the resistance mechanism is more compact in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a resistance mechanism for fitness equipment. Background Art

[0002] Existing fitness equipment, such as stretching trainers, usually requires a mechanism to provide movement resistance. The resistance mechanism is usually an elastic component, a counterweight or a resistance wheel. In recent years, there have also been some fitness equipment that uses motors as resistance mechanisms. When using traditional counterweight equipment for rapid strength training, it is easy for the resistance at the counterweight end to increase sharply due to the increase in movement speed. However, 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, the existing resistance mechanism that uses resistance motors as the source of resistance has a complex structure, occupies a large space, and has a low degree of equipment integration, resulting in a large size of fitness equipment. Utility Model Content

[0003] Therefore, in view of the above problems, the present invention provides a resistance mechanism for fitness equipment.

[0004] The utility model is implemented by the following scheme:

[0005] The utility model provides a resistance mechanism for fitness equipment, which is characterized by comprising:

[0006] A housing, wherein a wire outlet hole is provided on the upper portion of the housing;

[0007] a motor for providing resistance in the fitness equipment, the motor being mounted on the bottom of the housing, 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, wherein the hoisting mechanism is disposed in the housing and is transmission-connected to one side of the motor;

[0009] A controller is installed in the housing and located above the motor.

[0010] In one embodiment, a guide mechanism is further included, wherein the controller and the guide mechanism are located in the upper space of the shell, the motor and the hoisting mechanism are located in the lower space of the shell, and the axial direction of the motor is parallel to the length direction of the shell, the motor and the hoisting mechanism are coaxially arranged, and the hoisting mechanism is arranged opposite to the wire outlet hole, and the guide mechanism is arranged in the shell and between the wire outlet hole and the hoisting mechanism.

[0011] In one embodiment, the resistance mechanism further includes a human-machine interaction device, which is electrically connected to the controller and is disposed on the housing for adjusting and displaying the working parameters of the resistance mechanism.

[0012] In one embodiment, the human-computer interaction device is a jog shuttle knob display assembly, which includes a jog shuttle knob and a display device provided on the front of the jog shuttle knob.

[0013] In one embodiment, the resistance mechanism further includes a cooling fan, which is located on a side of the motor away from the hoisting mechanism. The housing is provided with cooling holes, and the cooling fan is arranged opposite to the cooling holes.

[0014] In one embodiment, the hoisting mechanism includes a reel for winding and a flange baffle located at the outer end of the reel, and a first locking mating unit is provided on at least one flange baffle; the resistance mechanism also includes a self-locking drive mechanism, and the self-locking drive mechanism is used to perform locking and unlocking operations on the rotation of the hoisting mechanism, and the self-locking drive mechanism includes a drive unit and a second locking mating unit, and the drive unit is used to drive the second locking mating unit to engage or disengage with the first locking mating unit, thereby performing locking and unlocking operations on the rotation of the hoisting mechanism.

[0015] 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.

[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 self-locking drive mechanism is roughly within the axial projection range of the hoisting mechanism.

[0018] In one embodiment, the flange baffle is provided on a side of the drum away from the motor.

[0019] 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.

[0020] In one embodiment, 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

[0021] The self-locking drive mechanism performs an operation of locking the rotation of the hoisting mechanism due to a power-off state.

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

[0023] The resistance mechanism for fitness equipment of the present invention is provided with a wire outlet hole above the shell; a motor is used to provide resistance in the fitness equipment, the motor is installed at the bottom of the shell, the motor includes a stator assembly and a rotor assembly, and the rotor assembly can rotate relative to the stator assembly; a hoisting mechanism is used to wind a rope member at the force-applying end, the hoisting mechanism is installed in the shell and is transmission-connected to one side of the motor; a guide mechanism is provided in the shell and is located between the wire outlet hole and the hoisting mechanism; a controller is installed in the shell and is located above the motor, so that the internal space of the shell can be reasonably utilized, making the resistance mechanism structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional diagram of the resistance mechanism of this embodiment;

[0025] Figure 2 is a perspective view of the resistance mechanism of this embodiment with part of the housing removed;

[0026] Figure 3 is a three-dimensional diagram of the motor, hoisting mechanism, guide mechanism and self-locking drive mechanism of this embodiment;

[0027] Figure 4 1 is an exploded view of the motor, hoisting mechanism and self-locking drive mechanism of this embodiment;

[0028] Figure 5 is a perspective view of the self-locking drive mechanism of this embodiment;

[0029] Figure 6 This is a three-dimensional view of the self-locking drive mechanism of this embodiment from another direction;

[0030] Figure 7 is a perspective view of the rope member of this embodiment being passed through the guide mechanism;

[0031] Figure 8 is a perspective view of a resistance mechanism according to another embodiment;

[0032] Figure 9 is a perspective view of a motor, a hoisting mechanism, a guide mechanism, and a self-locking drive mechanism according to another embodiment;

[0033] Figure 10 It is a three-dimensional diagram of the motor, hoisting mechanism, guide mechanism and self-locking drive mechanism of another embodiment. DETAILED DESCRIPTION

[0034] 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.

[0035] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0036] 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.

[0037] The motor 20, self-locking drive mechanism 30, and controller 40 are mounted within the housing 10. The controller 40 is located above the motor 20. The housing 10 is provided with heat dissipation holes 12 and a cooling fan 13. The cooling fan 13 is positioned opposite the heat dissipation holes 12 and is located on the side of the motor 20 away from the hoisting mechanism 50 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.

[0038] 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.

[0039] 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.

[0040] like Figure 1-4 As 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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 .

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 exits the housing 10 through the outlet hole 11. The guide mechanism 60 guides the rope on the drum 51 as it passes through the housing 10, ensuring accurate alignment with the outlet hole 11. This prevents the rope from scraping against the housing 10, causing wear and tear that could affect its service life. This arrangement also effectively utilizes the internal space of the housing 10, making the resistance mechanism more compact. Of course, in other embodiments, the guide mechanism 60 may not be provided.

[0049] Reference Figure 9In some other embodiments, the guide mechanism 60' between the cable outlet 11 and the reel 51 may also include a first guide roller 61' and a second guide roller 62' spaced apart along the cable outlet direction, with the second guide roller 62' being closer to the cable outlet 11 than the first guide roller 61', and the axes of the first guide roller 61' and the second guide roller 62' being substantially parallel. The rope member passes around the first guide roller 61', passes between the first guide roller 61' and the second guide roller 62', and then exits the housing 10 through the cable outlet 11. Alternatively, the rope member passes around the first guide roller 61' and exits the cable outlet 11 on the same side of the first guide roller 61' and the second guide roller 62'.

[0050] Reference Figure 10 In some other embodiments, the guide mechanism 60″ between the wire outlet hole 11 and the reel 51 may also include two guide rollers 61″ arranged in parallel and at an interval. The two guide rollers 61″ are arranged in parallel and perpendicular to the wire outlet direction. The rope passes between the two guide rollers 61″ and passes through the wire outlet hole 11 to the outside of the housing 10. The vertical here includes completely vertical and approximately vertical.

[0051] The controller 40 and the guide mechanism 60 are located in the upper space of the shell 10, the motor 20 and the hoisting mechanism 50 are located in the lower space of the shell 10, and the axial direction of the motor 20 is parallel to the length direction of the shell 10. The motor 10 and the hoisting mechanism 50 are coaxially arranged, and the hoisting mechanism 50 is arranged opposite to the wire outlet hole 11. In this way, the space arrangement is more reasonable and the resistance mechanism is more compact.

[0052] 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.

[0053] 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.

[0054] In other embodiments, the spring 311 may also be other elastic elements, such as an elastic tube.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 for fitness equipment, characterized in that: include: A housing, wherein a wire outlet hole is provided on the upper portion of the housing; a motor for providing resistance in the fitness equipment, the motor being mounted on the bottom of the housing, 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, wherein the hoisting mechanism is disposed in the housing and is transmission-connected to one side of the motor; A controller is installed in the housing and located above the motor.

2. The resistance mechanism for fitness equipment according to claim 1, characterized in that: It also includes a guide mechanism, the controller and the guide mechanism are located in the upper space of the shell, the motor and the hoisting mechanism are located in the lower space of the shell, and the axial direction of the motor is parallel to the length direction of the shell; the motor and the hoisting mechanism are coaxially arranged, and the hoisting mechanism is arranged opposite to the wire outlet hole, and the guide mechanism is arranged in the shell and between the wire outlet hole and the hoisting mechanism.

3. The resistance mechanism for fitness equipment according to claim 1, characterized in that: The resistance mechanism further includes a human-machine interaction device, which is electrically connected to the controller and is disposed on the housing for adjusting and displaying operating parameters of the resistance mechanism.

4. The resistance mechanism for fitness equipment according to claim 3, characterized in that: The human-computer interaction device is a jog shuttle knob display assembly, which includes a jog shuttle knob and a display device arranged on the front of the jog shuttle knob.

5. The resistance mechanism for fitness equipment according to claim 1, characterized in that: The resistance mechanism further includes a cooling fan, which is located on a side of the motor away from the hoisting mechanism. The housing is provided with cooling holes, and the cooling fan is arranged opposite to the cooling holes.

6. The resistance mechanism for fitness equipment according to claim 1, characterized in that: The hoisting mechanism includes a reel for winding and a flange baffle located at the outer end of the reel, and a first locking and mating unit is provided on at least one flange baffle; the resistance mechanism also includes a self-locking drive mechanism, and the self-locking drive mechanism is used to perform locking and unlocking operations on the rotation of the hoisting mechanism, and the self-locking drive mechanism includes a drive unit and a second locking and mating unit, and the drive unit is used to drive the second locking and mating unit to engage or disengage with the first locking and mating unit, thereby performing locking and unlocking operations on the rotation of the hoisting mechanism.

7. The resistance mechanism for fitness equipment according to claim 6, 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.

8. The resistance mechanism for fitness equipment according to claim 7, 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 for fitness equipment according to claim 6, characterized in that: The self-locking drive mechanism is substantially within the axial projection of the hoisting mechanism; and / or The flange baffle is provided on the side of the reel away from the motor; and / or 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.

10. The resistance mechanism for fitness equipment according to claim 6, characterized in that: 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 The self-locking drive mechanism performs an operation of locking the rotation of the hoisting mechanism due to a power-off state.

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