Damping structure with double magnetic powder dampers

Abstract

According to the scheme, the double-magnetic-powder-damper damping structure comprises magnetic powder brakes used for providing damping force when a stay wire is stretched, and the two magnetic powder brakes are symmetrically arranged; the take-up assemblies are in one-to-one correspondence with the magnetic powder brakes and are in driving connection with the magnetic powder brakes through transmission structures, each take-up assembly is provided with a winding groove, and each take-up assembly provides take-up force through a built-in coil spring; the winding wheel sets are in one-to-one correspondence with the take-up assemblies; and the pull wires correspond to the take-up assemblies one to one, one end of each pull wire is connected with the winding groove of the corresponding take-up assembly, and the other end of each pull wire penetrates through the winding wheel set to be connected with a handle. The double-channel damping force is provided, so that single-hand and double-hand strength training can be conveniently achieved, and the training flexibility degree is greatly improved.

Description

Technical Field

[0001] This application relates to a resistance structure, specifically to the damping structure of a double magnetic powder damper. Background Art

[0002] Power type fitness equipment mainly consists of two major parts: an operating mechanism and a counterweight mechanism. The operating mechanism has its own corresponding special structure according to the muscle position being trained, while the counterweight mechanism is mostly basically the same in a series of products. However, most counterweight mechanisms are large in volume and heavy in weight, and are not suitable for small fitness equipment, which is not conducive to the popularization of fitness equipment.

[0003] Therefore, there are more and more electronically controlled resistance mechanisms emerging to replace the traditional counterweight mechanism. However, the current electronically controlled resistance mechanisms, such as the resistance system composed of magnetic powder brakes, mostly adopt the form of a single resistance source, and cannot achieve single-handed training. Moreover, magnetic powder brakes are not suitable for fly exercises because there is no special structure to automatically wind the wire, and a motor needs to be used for assistance, or the magnetic powder brake is directly replaced by a motor. The former requires an additional motor, resulting in a higher cost, and the latter has higher performance requirements for the motor and also has a high-cost problem.

[0004] Therefore, there is an urgent need for a damping structure of a double magnetic powder damper that can reduce costs and facilitate single-handed training. Utility Model Content

[0005] The purpose of this application is to provide a damping structure of a double magnetic powder damper for the above problems existing in the prior art.

[0006] In order to achieve the above application purpose, the following technical solutions are adopted in this application: The damping structure of the double magnetic powder damper includes:

[0007] Magnetic powder brakes, used to provide damping force when stretching the wire rope. Two magnetic powder brakes are symmetrically arranged;

[0008] Wire winding assemblies, corresponding to the magnetic powder brakes one by one, and drivingly connected to the magnetic powder brakes through a transmission structure. Each wire winding assembly is provided with a wire winding groove, and each wire winding assembly provides a wire winding force through an internal coil spring;

[0009] Wire winding wheel sets, corresponding to each wire winding assembly one by one;

[0010] Wire ropes, corresponding to each wire winding assembly one by one. One end of each wire rope is connected to the wire winding groove of the wire winding assembly, and the other end passes through the wire winding wheel set and is connected to a handle.

[0011] Working Principle and Beneficial Effects: 1. Compared with the prior art, the magnetic powder brake - wire winding assembly - wire winding wheel set - wire rope in this application is a set, and the two systems can operate independently, and the left and right wire winding do not interfere with each other. Therefore, single-handed training and two-handed training can be achieved.

[0012] 2. Compared with the prior art, when the drawstring is stretched in the present application, the coil spring of the wire take-up assembly will wind up and store elastic force. After the drawstring is released, the coil spring provides the wire take-up force, so that there is no need for an additional motor to provide the wire take-up force, significantly reducing the cost and making the structure more compact, which can be applied to smaller fitness equipment and is thus convenient for popularization.

[0013] Furthermore, each wire take-up assembly is drivingly connected to the magnetic powder brake through belt drive or gear drive or chain drive.

[0014] With this setting, by different transmission ratios or gear sizes, the movement speed of the wire take-up assembly connected to the magnetic powder brake can be adjusted, so as to achieve different resistance levels. The transmission system can provide more precise resistance control because they allow for fine adjustments to meet the specific needs of users. Belt drive, gear drive or chain drive are generally more durable and stable than direct drive, which helps to extend the lifespan of the fitness equipment and reduce maintenance requirements.

[0015] Furthermore, a driven wheel is provided on the wire take-up assembly, and a driving wheel is provided on the magnetic powder brake. The driven wheel and the driving wheel are drivingly connected through a belt or a chain.

[0016] With this setting, since the driving wheel and the magnetic powder brake are separated, maintenance becomes easier and more economical. The parts that need to be repaired or replaced can be accessed independently without affecting the operation of the entire system.

[0017] Furthermore, each wire take-up assembly includes a winding body provided with a winding groove, a coil spring disposed in the mounting groove of the winding groove, a front cover for closing the winding groove, and a one-way bearing partially disposed in the inner ring of the winding body. The two wire take-up assemblies are both connected to the same main shaft. The two ends of the main shaft respectively pass through the two wire take-up assemblies and are coaxially rotationally connected to each coil spring through a fixed bushing. Each driven wheel is connected to the main shaft through a one-way bearing.

[0018] With this setting, the presence of the coil spring enables it to automatically wind the cord back into the winding groove when the drawstring is released, thus realizing an automatic wire take-up process. The use of the one-way bearing allows the driven wheel to be connected to the main shaft, but only allows one-way rotation. Therefore, when the drawstring is released, the coil spring only drives the main shaft and the winding body to rotate, but does not drive the driven wheel to rotate. That is, the user can freely stretch the drawstring. When the user relaxes, the one-way bearing will prevent the driven wheel from rotating, so that the wire take-up cannot be completed due to the damping of the magnetic powder brake.

[0019] Furthermore, reinforcing ribs are provided on the winding body. The reinforcing ribs can increase the bending strength and stiffness of the winding body, enabling it to withstand greater tensile force and torque. This is very important for withstanding the stress generated by the user's strength and movement. By reducing the deformation of the winding body, the reinforcing ribs can also help reduce vibration and noise inside the system, providing a smoother and quieter training experience.

[0020] Furthermore, the outer diameter of the driven wheel is larger than that of the driving wheel. Due to the larger outer diameter of the driven wheel, it can provide a larger lever arm, thereby increasing the mechanical advantage. This means that at a given force, the driven wheel can generate a greater torque or rotational force, which is very useful for providing sufficient resistance to meet the user's training needs.

[0021] Furthermore, it also includes a battery, which is electrically connected to the two magnetic particle brakes respectively.

[0022] With this setting, it can be used without plugging in, which is more convenient for moving the fitness equipment equipped with the damping structure of this application. It can be used in more places, greatly improving the convenience level.

[0023] Furthermore, each winding wheel group includes a first winding wheel, a steering wheel, and a second winding wheel. The pull wire passes through the first winding wheel, the steering wheel, and the second winding wheel in sequence after passing through the wire take-up assembly.

[0024] This setting helps to guide the pull wire, change the direction, evenly distribute the force, and provide smooth movement, which can improve the performance of the fitness equipment and the user experience. They can play an important role in different fitness equipment and training movements.

[0025] Furthermore, the steering wheel turns the pull wire horizontally by 90°, and the second winding wheel turns the pull wire vertically by 90°. A significant change in the movement direction can be achieved. This is very important for simulating different movements and training actions, enabling the user to perform various complex movements, such as weightlifting, rowing, squatting, etc.

[0026] Furthermore, each winding wheel group also includes a guide wheel group. Each guide wheel group includes two symmetrically arranged guide wheels, so that the pull wire can pass through the guiding gap between the two guide wheels. The design of the guide wheel group ensures that the pull wire always stays on the correct path and will not deviate or get stuck. This helps to ensure the smoothness and stability of the movement. At the same time, it also helps to reduce the friction between the pull wire and other surfaces, thereby reducing the wear of the rope or pull wire and extending their service life. It also reduces the possibility of the pull wire getting stuck or jammed, ensuring that the user can train smoothly and reducing unnecessary interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the structural schematic of this application Figure 1 ;

[0028] Figure 2 is the structural schematic of the present application Figure 2 ;

[0029] Figure 3 is the exploded view of the wire take-up assembly;

[0030] Figure 4 is the cross-sectional view of the wire take-up assembly.

[0031] In the figure, 1 is the magnetic powder brake; 2 is the wire take-up assembly; 3 is the wire winding wheel set; 4 is the pulling wire; 5 is the battery; 11 is the driving wheel; 21 is the wire winding body; 22 is the coil spring; 23 is the front cover; 24 is the one-way bearing; 25 is the main shaft; 26 is the fixed bushing; 27 is the driven wheel; 211 is the wire winding groove; 212 is the reinforcing rib; 213 is the second bushing; 214 is the second deep groove ball bearing; 271 is the first bushing; 272 is the first deep groove ball bearing; 31 is the first wire winding wheel; 32 is the steering wheel; 33 is the second wire winding wheel; 34 is the guide wheel set. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0033] Those skilled in the art should understand that in the disclosure of the present application, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present application.

[0034] As Figures 1-4 shown, the double magnetic powder damper damping structure of the present application includes:

[0035] The magnetic powder brake 1 is used to provide the damping force when stretching the pulling wire 4, and two magnetic powder brakes 1 are symmetrically arranged;

[0036] In this embodiment, the magnetic powder brake 1 can select a multi-purpose digital resistance device and its application disclosed in CN114307038A. The magnetic powder brake 1 is smaller in length and volume relative to the motor, which is more conducive to reducing the volume of the power equipment. Therefore, it is very suitable for use as the brake of the present application.

[0037] The wire take-up assembly 2 corresponds to the magnetic powder brake 1 one by one and is drivingly connected to the magnetic powder brake 1 through a transmission structure. Each wire take-up assembly 2 is provided with a wire winding groove 211 (there are holes on the wire winding groove 211 for fixing the pulling wire 4), and each wire take-up assembly 2 provides a wire take-up force through a built-in coil spring 22;

[0038] Among them, as Figure 3 and Figure 4 shown, each wire take-up assembly 2 is drivingly connected to the magnetic powder brake 1 through belt drive or gear drive or chain drive. Preferably, a driven wheel 27 is provided on the wire take-up assembly 2, and a driving wheel 11 is provided on the magnetic powder brake 1. The driven wheel 27 and the driving wheel 11 are drivingly connected through a belt or a chain. In this embodiment, the belt drive mode is selected, that is, both the driving wheel 11 and the driven wheel 27 are belt wheels, and the two wheels are connected through an elastic belt. Compared with other drive modes, the belt drive is more silent, can provide a more stable power transmission, and has low lubrication requirements, which is more suitable for fitness equipment.

[0039] Specifically, each wire take-up assembly 2 includes a wire winding body 21 provided with a wire winding groove 211, a coil spring 22 arranged in the installation groove of the wire winding groove 211, a front cover 23 for closing the wire winding groove 211, and a one-way bearing 24 partially arranged in the inner ring of the wire winding body 21. The two wire take-up assemblies 2 are both connected to the same main shaft 25. The two ends of the main shaft 25 respectively pass through the two wire take-up assemblies 2 and are coaxially rotatably connected to each coil spring 22 through a fixed bushing 26. Each driven wheel 27 is connected to the main shaft 25 through a one-way bearing 24. The presence of the coil spring 22 enables it to automatically wind the cord back into the wire winding groove 211 when the pulling wire 4 is released, thus realizing an automatic wire take-up process. The use of the one-way bearing 24 allows the driven wheel 27 to be connected to the main shaft 25, but only allows one-way rotation. Therefore, when the pulling wire 4 is released, the coil spring 22 will only drive the main shaft 25 and the wire winding body 21 to rotate, but will not drive the driven wheel 27 to rotate, that is, the user can freely stretch the pulling wire 4. When the user relaxes, the one-way bearing 24 will prevent the driven wheel 27 from rotating, so that the wire take-up cannot be completed due to the damping of the magnetic powder brake 1.

[0040] Preferably, the wire winding body 21 is provided with reinforcing ribs 212. The shape of the reinforcing ribs 212 is not limited, and the purpose is to increase the strength of the wire winding body 21.

[0041] Preferably, the outer diameter of the driven wheel 27 is larger than the outer diameter of the driving wheel 11. Since the outer diameter of the driven wheel 27 is larger, it can provide a larger lever arm, thereby increasing the mechanical advantage.

[0042] Specifically, there is not only a one-way bearing 24 (one-way needle roller bearing) between the main shaft 25 and the driven wheel 27, but also multiple other bearings. As Figure 4As shown in the figure, the inner ring of the driven wheel 27 is provided with a first shaft sleeve 271. The first shaft sleeve 271 is injection-molded and integrated with the driven wheel 27, and a square frame is provided on the driven wheel 27 to prevent rotation failure. A first deep groove ball bearing 272 is installed in the shaft sleeve. The first deep groove ball bearing 272 can ensure that the smoothness of the wire winding is not affected even when the driven wheel 27 bears a high load tension. The one-way bearing 24 is also installed in the first shaft sleeve 271. The inner ring of the winding body 21 is also provided with a second shaft sleeve 213. There are two second deep groove ball bearings 214 between the inner ring of the second shaft sleeve 213 and the main shaft 25, and the one-way bearing 24 is arranged between the outer ring of the second shaft sleeve 213 and the inner ring of the first shaft sleeve 271. Among them, the second shaft sleeve 213 has basically the same structure as the first shaft sleeve 271, and is also injection-molded and integrated with the winding body 21, and a square frame is provided on the winding body 21 to prevent rotation failure. The two second deep groove ball bearings 214 can evenly distribute the conduction generated by the large pressure of the wire 4, so that the rotation is smooth and not affected after release.

[0043] The wire winding wheel set 3 corresponds to each wire winding component 2 one by one;

[0044] In this embodiment, each wire winding wheel set 3 includes a first wire winding wheel 31, a steering wheel 32 and a second wire winding wheel 33. The wire 4 passes through the first wire winding wheel 31, the steering wheel 32 and the second wire winding wheel 33 in sequence after passing through the wire winding component 2. The steering wheel 32 turns the wire 4 horizontally by 90°, and the second wire winding wheel 33 turns the wire 4 vertically by 90°. The purpose is to enable the wire 4 to be tightened while also being able to turn, providing a smooth stretching experience.

[0045] Preferably, each wire winding wheel set 3 further includes a guide wheel set 34. Each guide wheel set 34 includes two symmetrically arranged guide wheels, so that the wire 4 can pass through the guide gap between the two guide wheels. The main purpose is to ensure that the wire 4 always stays on the correct path, while reducing the possibility of the wire 4 being stuck or jammed, ensuring that users can train smoothly.

[0046] The wire 4 corresponds to each wire winding component 2 one by one. One end of each wire 4 is connected to the wire winding groove 211 of the wire winding component 2, and the other end passes through the wire winding wheel set 3 and is connected to the handle.

[0047] In this embodiment, the material of the wire 4 is not limited and is an existing technology. The handle connected to the wire 4 can be other parts. The handle is an essential part for bird flying exercises or other strength training, which belongs to conventional technical means, and its structure and principle will not be elaborated here.

[0048] The battery 5 is electrically connected to the two magnetic powder brakes 1 respectively.

[0049] In this embodiment, the battery 5 is a common lithium battery 5, which can provide sufficient electrical energy for the magnetic powder brake 1. It can more conveniently facilitate the movement of the fitness equipment with the damping structure of the present application, can be used in more places, and greatly improves the convenience.

[0050] The parts not detailed in this application are prior arts, so they are not elaborated in this application.

[0051] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" cannot be understood as a limitation on the quantity.

[0052] Although terms such as magnetic powder brake 1, wire winding assembly 2, wire winding wheel set 3, wire 4, battery 5, driving wheel 11, wire winding body 21, coil spring 22, front cover 23, one-way bearing 24, main shaft 25, fixed bushing 26, driven wheel 27, wire winding groove 211, reinforcing rib 212, second bushing 213, second deep groove ball bearing 214, first bushing 271, first deep groove ball bearing 272, first wire winding wheel 31, steering wheel 32, second wire winding wheel 33, guide wheel set 34 are used more frequently in this application, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of this application; any interpretation of them as any additional limitation is contrary to the spirit of this application.

[0053] This application is not limited to the above best implementation manner. Anyone can obtain other various forms of products under the inspiration of this application. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as this application, it falls within the protection scope of this application.

Claims

1. Double magnetic powder damper damping structure, characterized in that, Comprising: Magnetic powder brakes, which are used to provide damping force when stretching the wire rope. The two magnetic powder brakes are symmetrically arranged. Wire take-up assemblies, which correspond to the magnetic powder brakes one by one and are drivingly connected to the magnetic powder brakes through a transmission structure. Each wire take-up assembly is provided with a wire winding groove, and each wire take-up assembly provides a wire take-up force through an internal torsion spring. Wire winding wheel sets, which correspond to each wire take-up assembly one by one. Wire ropes, which correspond to each wire take-up assembly one by one. One end of each wire rope is connected to the wire winding groove of the wire take-up assembly, and the other end passes through the wire winding wheel set and is connected to a handle.

2. The damping structure of the double magnetic powder damper according to claim 1, wherein Each wire take-up assembly is drivingly connected to the magnetic powder brake through belt drive or gear drive or chain drive.

3. The damping structure of the double magnetic powder damper according to claim 2, characterized in that A driven wheel is provided on the wire take-up assembly, and a driving wheel is provided on the magnetic powder brake. The driven wheel and the driving wheel are drivingly connected through a belt or a chain.

4. The damping structure of the double magnetic powder damper according to claim 3, characterized in that, Each wire take-up assembly includes a wire winding body provided with a wire winding groove, a torsion spring arranged in the installation groove of the wire winding groove, a front cover for closing the wire winding groove, and a one-way bearing partially arranged on the inner ring of the wire winding body. The two wire take-up assemblies are both connected to the same main shaft. Two ends of the main shaft respectively pass through the two wire take-up assemblies and are coaxially rotatably connected to each torsion spring through a fixed bushing. Each driven wheel is connected to the main shaft through the one-way bearing.

5. The damping structure of the dual magnetic particle damper according to claim 4, wherein, Reinforcing ribs are provided on the wire winding body.

6. The damping structure of the double magnetic powder damper according to claim 3, wherein The outer diameter of the driven wheel is larger than the outer diameter of the driving wheel.

7. The damping structure of the double magnetic powder damper according to claim 1, wherein, It further includes a battery, which is electrically connected to the two magnetic powder brakes respectively.

8. The damping structure of the double magnetic powder damper according to any one of claims 1-7, characterized in that Each wire winding wheel set includes a first wire winding wheel, a turning wheel, and a second wire winding wheel. The wire rope passes through the first wire winding wheel, the turning wheel, and the second wire winding wheel in sequence after passing out of the wire take-up assembly.

9. The damping structure of the double magnetic powder damper according to claim 8, characterized in that, The turning wheel turns the wire rope horizontally by 90°, and the second wire winding wheel turns the wire rope vertically by 90°.

10. The damping structure of the double magnetic powder damper according to claim 8, wherein, Each wire winding wheel set further includes a guide wheel set. Each guide wheel set includes two symmetrically arranged guide wheels, so that the wire rope can pass through the guiding gap between the two guide wheels.

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