Adjustable damping device and treadmill

Abstract

The utility model relates to the technical field of fitness equipment, in particular to an adjustable damping device and a treadmill, the adjustable damping device comprises a top plate, a damper, a spring and a base, two ends of the spring are respectively connected with the top plate and the base, and the damper is sleeved with the spring; the shock absorber comprises a shell, a first electromagnet, a second electromagnet and a piston rod. The shell and the second electromagnet are fixedly installed on the base. The first electromagnet and the second electromagnet are located in the shell, and the piston rod connected with the first electromagnet is arranged at the top of the shell in a penetrating mode and can move up and down. The polarities of the magnetic poles on the opposite faces of the first electromagnet and the second electromagnet are the same, and the repulsive force between the first electromagnet and the second electromagnet is changed by controlling the magnitude of the energized current of the first electromagnet and the second electromagnet. The treadmill is provided with a plurality of adjustable vibration damping devices which can be independently controlled, so that the problem that the vibration damping effect is poor due to the fact that an existing vibration damping material achieves buffering through the intrinsic elasticity modulus is solved, and the vibration damping effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to an adjustable shock absorption device and a treadmill. Background Technology

[0002] With the increasing awareness of fitness among the general public, the demand for intelligent and personalized treadmills is becoming more prominent, and their shock absorption performance has become an important indicator for users' purchasing and experience. The impact on the treadmill varies depending on the user's weight, the speed at which they walk or run on the treadmill, or the different areas they are exercising on. Traditional treadmill shock absorption devices often use materials such as rubber or silicone, relying on the inherent elastic modulus of these materials for cushioning. This results in poor shock absorption, leading to significantly different exercise experiences for different users or under different exercise conditions.

[0003] Therefore, it is necessary to design an adjustable shock absorption device and treadmill that can adjust the level of cushioning to adapt to the exercise needs of different users and their different exercise states, thereby improving the user experience. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an adjustable shock absorption device and a treadmill.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An adjustable vibration damping device includes a top plate, a vibration damper, a spring, and a base. The spring is sleeved on the outside of the vibration damper, and its two ends are connected to the top plate and the base, respectively. The vibration damper includes a housing, a first electromagnet, a second electromagnet, and a piston rod. The housing is fixedly installed on the base, and the piston rod is movable up and down through the top of the housing and fixedly connected to the first electromagnet. The first and second electromagnets are installed inside the housing, and the second electromagnet is fixedly installed on the base. The first and second electromagnets are connected to an external circuit through wires. The magnetic poles on the opposite surfaces of the first and second electromagnets have the same polarity. The repulsive force between the first and second electromagnets is changed by controlling the magnitude of the current flowing through the first and second electromagnets.

[0007] Preferably, the piston rod includes a rod body and a mounting plate, the rod body passing through the top of the housing; the mounting plate is fixedly installed at one end of the rod body and located inside the housing; the bottom of the mounting plate is connected to the first electromagnet.

[0008] Preferably, the inner wall of the housing is provided with a guide post arranged longitudinally, and the side of the mounting plate is provided with a guide groove. The side of the guide post is adapted to the guide groove, and the mounting plate can move up and down along the guide post.

[0009] Preferably, the housing is made of aluminum, and the first electromagnet and the housing do not contact each other.

[0010] Preferably, a cushioning sponge is also included, which is installed on top of the second electromagnet.

[0011] Preferably, the mounting plate is provided with a first wire hole, the rod body is hollow, and the wire connected to the first electromagnet passes through the first wire hole and the rod body in sequence to connect to the external circuit.

[0012] Preferably, the side of the base is provided with a second wire hole, through which the wire connected to the second electromagnet passes to connect to the external circuit.

[0013] Preferably, the top of the base is provided with a mounting groove, in which the second electromagnet and the housing are both installed.

[0014] A treadmill includes a treadmill frame, a running platform, a pressure sensing device, a control circuit, and several adjustable shock absorption devices as described above. The running platform is mounted on the treadmill frame. The pressure sensing device is mounted on the running platform and electrically connected to the control circuit. The adjustable shock absorption devices are symmetrically arranged in pairs about the central axis of the running platform along the running direction at the bottom of the treadmill frame, and their wires are electrically connected to the control circuit. The control circuit is located inside the treadmill frame and is used to receive pressure data measured by the pressure sensing device and output commands to control the magnitude of the current energized by the first and second electromagnets.

[0015] Preferably, the treadmill support includes a sleeve that is fitted over the outside of the adjustable shock absorption device, and the top of the sleeve is fixedly connected to the top plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The adjustable vibration damping device proposed in this application adjusts the magnitude of the current energized by the first electromagnet and the second electromagnet, thereby changing the repulsive force between the first electromagnet and the second electromagnet and realizing the adjustment of the degree of impact buffering. It can adapt to the movement needs of different users or users in different movement states and improve the user's movement experience.

[0018] (2) The adjustable vibration damping device proposed in this application is provided with a guide column, so that the mounting plate of the piston rod and the first electromagnet connected to the mounting plate can move up and down along the guide column, ensuring that the first electromagnet remains stable when moving up and down, preventing the first electromagnet from deviating, so as to accurately control the degree of buffering of the impact force by the adjustable vibration damping device.

[0019] (3) The treadmill proposed in this application is equipped with several adjustable shock absorption devices and each adjustable shock absorption device is independently controlled to adjust the degree of impact buffering at different positions of the treadmill, improve the shock absorption effect, and reduce the noise caused by the vibration of the treadmill, so as to provide users with a comfortable experience. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of an adjustable vibration damping device proposed in this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of an adjustable vibration damping device proposed in this application;

[0022] Figure 3 This is a schematic diagram of the exploded structure of an adjustable vibration damping device proposed in this application;

[0023] Figure 4 This is a schematic diagram of the housing of an adjustable vibration damping device proposed in this application;

[0024] Figure 5 This is a schematic diagram of the structure of a treadmill proposed in this application;

[0025] Figure 6 This is a block diagram illustrating the control principle of a treadmill proposed in this application;

[0026] Reference numerals: 100, Adjustable vibration damping device; 1, Top plate; 2, Vibration damper; 21, Housing; 211, Guide column; 22, First electromagnet; 23, Second electromagnet; 24, Piston rod; 241, Rod body; 242, Mounting plate; 2421, Guide groove; 2422, First wire hole; 25, Wire; 3, Spring; 4, Base; 41, Second wire hole; 42, Mounting groove; 5, Cushioning sponge; 200, Treadmill frame; 201, Sleeve; 300, Running platform; 400, Pressure sensing device; 500, Control circuit. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are merely illustrative to facilitate understanding of the present invention, and their specific proportions can be adjusted according to design requirements. The vertical relationships of relative elements and the definitions of front / back in the graphics described herein should be understood by those skilled in the art to refer to the relative positions of the components; therefore, they can all be flipped to present the same component, and all of this should fall within the scope disclosed in this specification.

[0028] refer to Figures 1 to 6This application provides an embodiment of a treadmill, including a treadmill frame 200, a running platform 300, a pressure sensor 400, a control circuit 500, and several adjustable shock-absorbing devices 100 as described above. The running platform 300 is mounted on the treadmill frame 200; the pressure sensor 400 is mounted on the running platform 300 and electrically connected to the control circuit 500; the adjustable shock-absorbing devices 100 are symmetrically paired about the central axis of the running platform along the running direction at the bottom of the treadmill frame 200, and wires 25 are electrically connected to the control circuit 500. In this embodiment, each adjustable shock-absorbing device 100 is connected to the control circuit 500 via wires 25, and the control circuit 500 controls each adjustable shock-absorbing device 100 individually. Specifically, the treadmill frame 200 includes a sleeve 201, which is sleeved on the outside of the adjustable shock-absorbing device 100, and the top of the sleeve 201 is fixedly connected to the top plate 1. The control circuit 500 is installed inside the treadmill support 200. It receives pressure data measured by the pressure sensor 400 and outputs commands to control the current supplied to the first electromagnet 22 and the second electromagnet 23. When a user exercises on the treadmill, different inclines, speeds, or user movements result in varying impact forces. The pressure sensor 400 measures the pressure data on the running platform 300 and transmits it to the control circuit 500. The control circuit 500 calculates the current supplied to the first electromagnet 22 and the second electromagnet 23 of each adjustable shock absorber 100 based on the pressure data at different locations on the running platform 300, and outputs control commands to adjust the repulsive force between the first electromagnet 22 and the second electromagnet 23. This adjusts the impact buffering level of each adjustable shock absorber 100 to accommodate the needs of different users or different exercise states, providing a comfortable user experience. The adjustable vibration damping device 100 proposed in this application provides a hardware foundation for the algorithm to realize the intelligence and personalization of treadmills. Specifically, the control circuit 500 is connected to each adjustable vibration damping device 100 through wires 25, which is a common circuit structure in the prior art. The structure of the control circuit 500 and its algorithm for calculating the current based on pressure data are not the focus of this application. The structure of the control circuit 500 and its internal algorithm will not be described in detail here.

[0029] In a specific embodiment, refer to Figure 1 , Figure 2 and Figure 3The adjustable vibration damping device 100 includes a top plate 1, a vibration damper 2, a spring 3, and a base 4. The spring 3 is sleeved on the outside of the vibration damper 2, and its two ends are connected to the top plate 1 and the base 4 respectively. The vibration damper 2 includes a housing 21, a first electromagnet 22, a second electromagnet 23, and a piston rod 24. The housing 21 is fixedly installed on the base 4. The first electromagnet 22 and the second electromagnet 23 are installed inside the housing 21, and the second electromagnet 23 is fixedly installed on the base 4. The piston rod 24 is movably inserted through the top of the housing 21. One end of the piston rod 24 is fixedly connected to the first electromagnet 22, and the other end is embedded in the top plate 1. When the magnitude of the current energizing the first electromagnet 22 and the second electromagnet 23 changes, the repulsive force between the first electromagnet 22 and the second electromagnet 23 will change, so that the first electromagnet 22 and the piston rod 24 can move up and down inside the housing 21. The first electromagnet 22 and the second electromagnet 23 are connected to an external circuit via wires 25. The magnetic poles on the opposite surfaces of the first electromagnet 22 and the second electromagnet 23 have the same polarity. The repulsive force between the first electromagnet 22 and the second electromagnet 23 is changed by controlling the magnitude of the current flowing through them. Specifically, the housing 21 is made of aluminum and is non-magnetic. The first electromagnet 22 and the housing 21 do not contact each other, and the second electromagnet 23 does not contact the housing 21. This avoids friction between the housing 21 and the first electromagnet 22 and the second electromagnet 23, which would otherwise require the first electromagnet 22 and the second electromagnet 23 to overcome friction and do work. At the same time, friction may cause mechanical damage to the first electromagnet 22 and the second electromagnet 23, affecting the precise control of the first electromagnet 22 and the second electromagnet 23 by the control circuit 500.

[0030] For details, please refer to Figure 1 and Figure 3 The piston rod 24 includes a rod body 241 and a mounting plate 242. The rod body 241 passes through the top of the housing 21; the mounting plate 242 is fixedly mounted to one end of the rod body 241 and is located inside the housing 21; the bottom of the mounting plate 242 is connected to the first electromagnet 22. (Reference) Figure 3 and Figure 4 The inner wall of the housing 21 is provided with a longitudinally arranged guide post 211, and the side of the mounting plate 242 is provided with a guide groove 2421. The side of the guide post 211 is adapted to the guide groove 2421, and the mounting plate 242 can move up and down along the guide post 211. By setting the guide post 211, the mounting plate 242 of the piston rod 24 and the first electromagnet 22 connected to the mounting plate 242 can move up and down along the guide post 211, ensuring that the first electromagnet 22 remains stable when moving up and down, preventing the first electromagnet 22 from deviating, so as to accurately control the degree of impact buffering of the adjustable vibration damping device 100.

[0031] In a specific embodiment, a buffer sponge 5 is also included. The buffer sponge 5 is installed on top of the second electromagnet 23 to avoid mechanical damage caused by the collision between the first electromagnet 22 and the second electromagnet 23.

[0032] Specifically, the mounting plate 242 has a first wire hole 2422, the rod body 241 is hollow, and the wire 25 connected to the first electromagnet 22 passes through the first wire hole 2422 and the rod body 241 to connect to the external circuit; the side of the base 4 has a second wire hole 41, and the wire 25 connected to the second electromagnet 23 passes through the second wire hole 41 to connect to the external circuit. When the adjustable shock absorption device 100 is installed on the treadmill, the wire 25 connected to the first electromagnet 22 and the second electromagnet 23 extends out of the piston rod 24 and the base 4 to facilitate the connection of the wire 25 to the control circuit 500 of the treadmill.

[0033] For details, please refer to Figure 3 The top of the base 4 is provided with a mounting groove 42, and the second electromagnet 23 and the housing 21 are both installed in the mounting groove 42 to avoid the adjustable vibration damping device from easily shifting during use, thereby ensuring the structural stability of the adjustable vibration damping device 100.

[0034] The working principle of the adjustable vibration damping device 100 and the treadmill proposed in this application is further explained below.

[0035] refer to Figure 5 and Figure 6Adjustable shock absorbers 100 are installed at the front, middle, and rear of the treadmill. The adjustable shock absorbers 100 are installed at the bottom of the treadmill. Specifically, the adjustable shock absorbers 100 are fixedly connected to the treadmill support 200 via a top plate 1, or are fitted onto the outside of the adjustable shock absorbers 100 via a sleeve 201, with the top of the sleeve 201 fixedly connected to the top plate 1. When a user exercises on the treadmill, the pressure sensor 400 on the running platform 300 measures the pressure data in real time and transmits it to the control circuit 500. The control circuit 500 calculates the current energized by the first electromagnet 22 and the second electromagnet 23 in each adjustable shock absorber 100 based on the pressure data, and outputs corresponding commands to control and adjust the current energized by the first electromagnet 22 and the second electromagnet 23 in each adjustable shock absorber 100, thereby changing the repulsive force between the first electromagnet 22 and the second electromagnet 23. By adjusting the adjustable shock absorption device 100, the impact force can be buffered to different degrees to adapt to the exercise needs of different users or users in different exercise states, thereby improving the user's exercise experience. Moreover, the adjustable shock absorption devices 100 located at the front, middle and rear can buffer the impact force at different positions. By adjusting the degree of buffering of the adjustable shock absorption devices 100 at different positions, it is also possible to cope with the different magnitudes of impact force and different points of application of the treadmill under different inclines. Adjusting the degree of buffering of impact force at different positions can improve the shock absorption effect and reduce the noise generated by treadmill vibration, providing users with a comfortable experience.

[0036] The above embodiments are only used to further illustrate the technical solution of this utility model, but this utility model is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of the technical solution of this utility model.

Claims

1. An adjustable vibration damping device, characterized in that: The device includes a top plate, a shock absorber, a spring, and a base. The spring is sleeved on the outside of the shock absorber, and its two ends are connected to the top plate and the base, respectively. The shock absorber includes a housing, a first electromagnet, a second electromagnet, and a piston rod. The housing is fixedly mounted on the base. The piston rod is movable up and down through the top of the housing and is fixedly connected to the first electromagnet. The first and second electromagnets are installed inside the housing, and the second electromagnet is fixedly mounted on the base. The first and second electromagnets are connected to an external circuit through wires. The magnetic poles on the opposite surfaces of the first and second electromagnets have the same polarity. The repulsive force between the first and second electromagnets is changed by controlling the magnitude of the current flowing through them.

2. The adjustable vibration damping device according to claim 1, characterized in that: The piston rod includes a rod body and a mounting plate. The rod body passes through the top of the housing. The mounting plate is fixedly installed at one end of the rod body and is located inside the housing. The bottom of the mounting plate is connected to the first electromagnet.

3. The adjustable vibration damping device according to claim 2, characterized in that: The inner wall of the housing is provided with a guide post arranged longitudinally, and the side of the mounting plate is provided with a guide groove. The side of the guide post is adapted to the guide groove, and the mounting plate can move up and down along the guide post.

4. The adjustable vibration damping device according to claim 1, characterized in that: The housing is made of aluminum. The first electromagnet and the housing are not in contact. The second electromagnet and the housing are not in contact.

5. An adjustable vibration damping device according to claim 1, characterized in that: It also includes a cushioning sponge, which is mounted on top of the second electromagnet.

6. An adjustable vibration damping device according to claim 2, characterized in that: The mounting plate is provided with a first wire hole, the rod body is hollow, and the wire connected to the first electromagnet passes through the first wire hole and the rod body in sequence to connect to the external circuit.

7. The adjustable vibration damping device according to claim 1, characterized in that: The base has a second wire hole on its side, through which the wire connected to the second electromagnet passes to connect to the external circuit.

8. An adjustable vibration damping device according to claim 1, characterized in that: The base has a mounting groove on its top, and both the second electromagnet and the housing are installed in the mounting groove.

9. A treadmill, characterized in that: The device includes a treadmill frame, a running platform, a pressure sensing device, a control circuit, and several adjustable shock absorption devices as described in any one of claims 1 to 8. The running platform is mounted on the treadmill frame. The pressure sensing device is mounted on the running platform and electrically connected to the control circuit. The adjustable shock absorption devices are symmetrically arranged in pairs about the central axis of the running platform along the running direction at the bottom of the treadmill frame. The wires are electrically connected to the control circuit. The control circuit is located inside the treadmill frame and is used to receive pressure data measured by the pressure sensing device and output commands to control the magnitude of the current energized by the first and second electromagnets.

10. A treadmill according to claim 9, characterized in that: The treadmill support includes a sleeve, which is fitted onto the outside of the adjustable shock absorption device, and the top of the sleeve is fixedly connected to the top plate.

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