A trampoline-based fitness equipment and its usage method

Abstract

The present invention discloses a fitness equipment based on a trampoline, including a trampoline. The trampoline is composed of a frame, springs and a trampoline fabric. There are more than 3 springs. The trampoline fabric is connected to the frame through the springs. It further includes a correction rod; the correction rod is connected to the frame, the correction rod is located directly above the trampoline fabric, and the length direction of the correction rod is the vertical direction. This is to solve the problem in the prior art that people need to jump actively, which is difficult for people who do not like sports or are not suitable for strenuous exercise to keep using.

Description

Technical Field

[0001] The present invention relates to a fitness equipment based on a trampoline and its usage method, belonging to the technical field of fitness equipment display. Background Art

[0002] When using a trampoline, people usually stand on the trampoline cloth and actively jump up and down, so that the whole body can be exercised. However, the disadvantage of this exercise method is that people need to actively jump, which is difficult for people who don't like sports or are not suitable for strenuous exercise to keep using. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a fitness equipment based on a trampoline and its usage method to overcome the deficiencies of the prior art.

[0004] The technical solution of the present invention is: a fitness equipment based on a trampoline, including a trampoline, the trampoline is composed of a frame, springs and a trampoline cloth, the number of springs is more than 3, the trampoline cloth is connected to the frame through springs, and a correction rod is further included;

[0005] The correction rod is connected to the frame, the correction rod is located directly above the trampoline cloth, and the length direction of the correction rod is the vertical direction.

[0006] Further, a first sliding sleeve, a sliding rod and a connecting rod are further included. The lower end of the sliding rod is fixedly connected to the frame, the direction of the sliding rod is the vertical direction, and the first sliding sleeve is slidably sleeved on the sliding rod up and down;

[0007] The first sliding sleeve is fixedly connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to the middle part of the correction rod, and the central axis of the correction rod is parallel to the central axis of the first sliding sleeve.

[0008] Further, a controller, a motor, a lead screw, a housing, a conductive slip ring, a ball nut, an electromagnet and a power supply are further included;

[0009] The sliding rod is hollow, and a groove is provided on the side wall of the sliding rod along the length direction of the sliding rod. The groove makes the projection of the sliding rod on the plane perpendicular to the central axis of the sliding rod not closed. The sliding rod is made of metal, and the motor is arranged at the upper end of the sliding rod;

[0010] The motor shaft is fixedly connected to the lead screw, the central axis of the lead screw coincides with the central axis of the motor shaft and the inner cavity of the sliding rod, the lead screw is distributed from the trampoline cloth to the upper end of the sliding rod, and the ball nut is threadedly connected to the lead screw;

[0011] The ball nut is arranged inside the housing. The housing is made of metal. The outer side surface of the housing matches the inner cavity of the sliding rod. A guide block matching the groove body is provided on the side wall of the housing. The housing is slidably mounted up and down in the inner cavity of the sliding rod. The housing and the ball nut are fixedly connected through an upper insulating plate and a lower insulating plate. The upper insulating plate, the lower insulating plate, the housing and the ball nut enclose a cylindrical cavity with a screw hole in the center. An electromagnet is arranged inside the cylindrical wall.

[0012] One pole of the electromagnet is electrically connected to the ball nut, and the other pole of the electromagnet is electrically connected to the housing.

[0013] A conductive slip ring is connected to the lead screw outside the stroke range of the ball nut. The conductive slip ring is electrically connected to one pole of the power supply.

[0014] The sliding rod is electrically connected to the other pole of the power supply.

[0015] The motor is electrically connected to the controller, and the power supply is electrically connected to the controller.

[0016] The first sliding sleeve is made of metal.

[0017] Further, a deformation prevention block is also provided near the outer side surface of the sliding rod in the groove body. The deformation prevention block is made of insulating material.

[0018] Further, a second sliding sleeve and an elastic support plate are also included.

[0019] The upper end of the elastic support plate is fixedly connected to the connecting rod, and the lower end of the elastic support plate is fixedly connected to the middle of the second sliding sleeve. The elastic force of the elastic support plate makes the central axes of the first sliding sleeve, the second sliding sleeve and the connecting rod form an angle greater than 0° with the central axis of the sliding rod when the first sliding sleeve, the second sliding sleeve and the connecting rod are not subject to external forces other than gravity, and the central axes of the first sliding sleeve and the second sliding sleeve incline in opposite directions to the connecting rod. The second sliding sleeve is made of metal.

[0020] Further, a linkage rod is also included. The upper end of the linkage rod is hinged to the lower end of the first sliding sleeve, and the lower end of the linkage rod is hinged to the upper end of the second sliding sleeve. The hinge joints of the linkage rod with the first sliding sleeve and the second sliding sleeve are located on one side of the connecting rod.

[0021] Further, the elastic force of the elastic support plate satisfies the following formula:

[0022]

[0023] Among them, F2 represents the elastic force, a represents the maximum upward acceleration of the electromagnet, g represents the acceleration due to gravity, m represents the average weight of the user, l1 represents the distance between the correction rod and the first sliding sleeve, and l2 represents the distance between the upper end of the elastic support plate and the first sliding sleeve.

[0024] Furthermore, it also includes a strap, which includes more than one strap, and the strap is fixedly connected to the correction rod, and the strap is distributed along the length direction of the correction rod.

[0025] A method for using a fitness equipment, the method comprising:

[0026] Sit on the trampoline with your legs straight, and lean your back against the correction bar so that your upper body and lower body are at 90 degrees;

[0027] Vibrating trampoline cloth.

[0028] Further, the method of vibrating the trampoline cloth comprises:

[0029] Free vibration, using the initial kinetic energy when a person sits on the trampoline to make the trampoline vibrate freely, the motor does not rotate, and the electromagnet is not energized;

[0030] Forced vibration, using the rotation of the motor to drive the electromagnet to reciprocate up and down, and the electromagnet is energized;

[0031] Damping vibration, the motor does not rotate, but the electromagnet is energized to generate damping on the first sliding sleeve and the second sliding sleeve.

[0032] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a correction bar on the trampoline, so that a person can sit on the trampoline cloth with both legs straight during exercise, and lean the back against the correction bar so that the upper body and the lower body are at 90 degrees. During exercise, as long as the trampoline cloth vibrates, the leg muscles can be activated, thereby exercising the human body. During exercise, there is no need for a person to actively jump, which is beneficial for people who do not like exercise or are not suitable for strenuous exercise, making it easier for them to persist in exercise. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional view of the present invention;

[0034] Figure 2 is a side view of the present invention;

[0035] Figure 3 for Figure 2 Section view at section line AA;

[0036] Figure 4 for Figure 3 Partial view at D in the middle;

[0037] Figure 5 for Figure 3 Partial view at G in the middle;

[0038] Figure 6 for Figure 5 Partial view at H in the middle;

[0039] Figure 7 for Figure 3Partial view at F in [Chinese name];

[0040] Figure 8 is Figure 7 Partial view at I in [Chinese name];

[0041] Figure 9 is Figure 3 Cross-sectional view at the G-G section line in [Chinese name];

[0042] Figure 10 is Figure 3 Partial view at C in [Chinese name];

[0043] Figure 11 Isometric view of the housing of the present invention;

[0044] Figure 12 Schematic diagram of the internal structure of the housing of the present invention;

[0045] Figure 13 Isometric structure diagram of the electromagnet of the present invention;

[0046] Figure 14 Is the circuit structure block diagram of the present invention. Detailed implementation mode

[0047] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and the specific implementation mode.

[0048] Example 1: Refer to Figure 1-14 , this embodiment adopts a fitness equipment based on a trampoline, including a trampoline, the trampoline is composed of a frame 1, springs 3 and a trampoline cloth 2, the springs 3 include more than 3, the trampoline cloth 2 is connected to the frame 1 through the springs 3, and further includes a correction rod 4; the correction rod 4 is connected to the frame 1, the correction rod 4 is located directly above the trampoline cloth 2, and the length direction of the correction rod 4 is the vertical direction. Here, through the correction rod 4, the exerciser can lean the back against the correction rod 4 so that the upper body and the lower body form a 90° angle.

[0049] In order to reduce the friction between the correction rod 4 and the back of a person during vibration on the trampoline, which may cause abrasions on the back of the person, in this embodiment, further, it also includes a first sliding sleeve 6-1, a sliding rod 5 and a connecting rod 7. The lower end of the sliding rod 5 is fixedly connected to the frame 1, the direction of the sliding rod 5 is the vertical direction, and the sliding rod 5 is slidably sleeved with the first sliding sleeve 6-1 up and down; the first sliding sleeve 6-1 is fixedly connected to one end of the connecting rod 7, and the other end of the connecting rod 7 is fixedly connected to the middle of the correction rod 4, and the central axis of the correction rod 4 is parallel to the central axis of the first sliding sleeve 6-1. When in use, a person moves up and down under the drive of the trampoline cloth 2. Since the correction rod 4 is slidably connected to the sliding rod 5, when the person moves up and down, the sliding rod 5 also moves up and down, thus avoiding the problem of abrasions caused by relative movement between the person and the sliding rod 5.

[0050] In addition to the initial kinetic energy provided by a person, in order to enable a person to move up and down on the trampoline cloth 2, in this embodiment, further included are a controller 18, a motor 8, a lead screw 11, a housing 14, a conductive slip ring 17, a ball nut 12, an electromagnet 13, and a power source 9; the slide bar 5 is hollow, and a groove 5-1 is provided on the side wall of the slide bar 5 along the length direction of the slide bar 5, and the groove 5-1 causes the projection of the slide bar 5 on a plane perpendicular to the central axis of the slide bar 5 not to be closed. The slide bar 5 is made of metal. The motor 8 is arranged at the upper end of the slide bar 5; the rotating shaft of the motor 8 is fixedly connected to the lead screw 11, and the central axis of the lead screw 11 coincides with the central axes of the rotating shaft of the motor 8 and the inner cavity of the slide bar 5. The lead screw 11 is distributed from the trampoline cloth 2 to the upper end of the slide bar 5. The ball nut 12 is threadedly connected to the lead screw 11; the ball nut 12 is arranged in the housing 14. The housing 14 is made of metal, and the outer side surface of the housing 14 matches the inner cavity of the slide bar 5. A guide block 12-1 matching the groove 5-1 is provided on the side wall of the housing 14. The housing 14 is slidably installed up and down in the inner cavity of the slide bar 5. The housing 14 and the ball nut 12 are fixedly connected through an upper insulating plate 16 and a lower insulating plate 15. The upper insulating plate 16, the lower insulating plate 15, the housing 14, and the ball nut 12 enclose a cylindrical cavity with a screw hole in the center, and an electromagnet 13 is arranged in the cylindrical wall; one pole of the electromagnet 13 is electrically connected to the ball nut 12, and the other pole of the electromagnet 13 is electrically connected to the housing 14; a conductive slip ring 17 is connected to the lead screw 11 outside the stroke range of the ball nut 12, and the conductive slip ring 17 is electrically connected to one pole of the power source 9; the slide bar 5 is electrically connected to the other pole of the power source 9; the motor 8 is electrically connected to the controller 18, and the power source 9 is electrically connected to the controller 18; the first sliding sleeve 6-1 is made of metal. When in use, the power source 9 is used to supply power to the electromagnet 13 to generate a magnetic field, and the motor 8 is used to drive the electromagnet 13 to move up and down. The electromagnet 13 moves up and down and passes through the first sliding sleeve 6-1. The first sliding sleeve 6-1 is made of metal. According to Lenz's law, the first sliding sleeve 6-1 will generate a magnetic field that hinders the movement of the electromagnet 13 due to electromagnetic induction. According to Newton's third theorem, the action force and the reaction force are equal in magnitude and opposite in direction. The force that hinders the movement of the electromagnet 13 will act on the first sliding sleeve 6-1 in the opposite direction, thereby driving the first sliding sleeve 6-1 to move. The movement of the first sliding sleeve 6-1 drives the first correction rod 4 to move. As long as a person ties himself to the correction rod 4, the up and down movement of the first correction rod 4 can also drive the person to move up and down, thereby realizing the up and down movement of a person on the trampoline driven by an external force.

[0051] It should be noted that in this patent, the groove 5-1 is used to cut off the induced current in the slide bar 5, so that a circular induced current that hinders the movement of the electromagnet 13 will not be formed in the slide bar 5.

[0052] In order to avoid the groove body 5-1 being provided outside the sliding rod 5, which may cause the diameter of the sliding rod 5 to be easily changed, in this embodiment, further, an anti-deformation clamping block 5-2 is further provided near the outer side surface of the sliding rod 5 inside the groove body 5-1, and the anti-deformation clamping block 5-2 is made of insulating material.

[0053] When the first sliding sleeve 6-1 is fitted with the sliding rod 5, in order to ensure that the first sliding sleeve 6-1 can move smoothly on the sliding rod 5, a certain gap is left between the first sliding sleeve 6-1 and the sliding rod 5. However, in this patent, the external force received by the first sliding sleeve 6-1 is the downward force on the side of the connecting rod 7. This makes the forces on both sides of the first sliding sleeve 6-1 asymmetric, resulting in an angle between the central axes of the first sliding sleeve 6-1 and the sliding rod 5, and this angle is located on the side of the connecting rod 7. This angle will cause a problem. This angle will make the contact points between the first sliding sleeve 6-1 and the sliding rod 5 be at two points, up and down. And when the first sliding sleeve 6-1 moves upward, the pressure between the upper point and the sliding rod 5 is relatively large, causing the air gap between the first sliding sleeve 6-1 and the sliding rod 5 to disappear, resulting in a relatively large frictional force borne by the first sliding sleeve 6-1.

[0054] When the electromagnet 13 drives the first sliding sleeve 6-1 to accelerate upward, the acceleration borne by the first sliding sleeve 6-1 includes the acceleration of the person moving upward and the gravitational acceleration. The forces generated by these two accelerations are greater than the human body gravity. This causes the electromagnet 13 to require a very large current to push the human body upward. Coupled with the frictional force borne by the first sliding sleeve 6-1, the current required by the electromagnet 13 is even greater, and it may even cause the first sliding sleeve 6-1 to be stuck and unable to move upward.

[0055] To solve the above problems, in this embodiment, further provided are a second sliding sleeve 6-2 and an elastic support plate 10; the upper end of the elastic support plate 10 is fixedly connected to the connecting rod 7, the lower end of the elastic support plate 10 is fixedly connected to the middle of the second sliding sleeve 6-2, and the elastic force of the elastic support plate 10 enables the central axis of the first sliding sleeve 6-1 and the central axis of the sliding rod 5 to form an angle θ greater than 0°, and the central axis of the second sliding sleeve 6-2 and the central axis of the sliding rod 5 to form an angle γ greater than 0° when the first sliding sleeve 6-1, the second sliding sleeve 6-2 and the connecting rod 7 are not subject to external forces other than gravity, and the central axes of the first sliding sleeve 6-1 and the second sliding sleeve 6-2 are inclined in opposite directions towards the connecting rod 7. The second sliding sleeve 6-2 is made of metal. When in use, the human back is tied to the correction rod 4, and the human body gravity is applied to the correction rod 4. After the correction rod 4 is subjected to force, a torque is applied to the connecting rod 7, causing the first sliding sleeve 6-1 to rotate in the reverse direction, making the angle between the central axis of the first sliding sleeve 6-1 and the central axis of the sliding rod 5 approach 0°. The elastic force of the elastic support plate 10, on the one hand, can balance the torque and the elastic force after the angle between the central axis of the first sliding sleeve 6-1 and the central axis of the sliding rod 5 approaches 0°, and will not continue to rotate in the opposite direction to cause the same problem, thereby increasing the contact area between the first sliding sleeve 6-1 and the sliding rod 5, and generating an air gap between the first sliding sleeve 6-1 and the sliding rod 5 to reduce the friction force; on the other hand, the elastic force of the elastic support plate 10 can continue to push the second sliding sleeve 6-2 to rotate, making the angle between the central axis of the first sliding sleeve 6-1 and the central axis of the sliding rod 5 approach 0°, thereby increasing the contact area between the first sliding sleeve 6-1 and the sliding rod 5, and generating an air gap between the first sliding sleeve 6-1 and the sliding rod 5 to reduce the friction force.

[0056] It should be noted that the structures of the second sliding sleeve 6-2 and the elastic support plate 10 of the present invention provide a force for the initial deflection of the first sliding sleeve 6-1 and do not affect the up and down movement of the first sliding sleeve 6-1.

[0057] With the above settings of the present invention, on the premise that the force received by the first sliding sleeve 6-1 is an asymmetric force, the friction force during the upward movement of the sliding sleeve structure can be reduced, the current magnitude required by the electromagnet 13 can be reduced, and the risk of jamming during the upward movement can be reduced.

[0058] When the electromagnet 13 moves up and down, the force generated on the second sliding sleeve 6-2 can only be applied to the first sliding sleeve 6-1 through the elastic support plate 10, which results in a certain lag in the movement of the first sliding sleeve 6-1. To solve this problem, in this embodiment, further, a linkage rod 6-3 is included. The upper end of the linkage rod 6-3 is hinged to the lower end of the first sliding sleeve 6-1, and the lower end of the linkage rod 6-3 is hinged to the upper end of the second sliding sleeve 6-2. The hinge points of the linkage rod 6-3 with the first sliding sleeve 6-1 and the second sliding sleeve 6-2 are located on one side of the connecting rod 7. During use, if the second sliding sleeve 6-2 moves due to the thrust of the electromagnet 13, the movement of the second sliding sleeve 6-2 will push the first sliding sleeve 6-1 to move through the linkage rod 6-3. Since the linkage rod 6-3 is rigid, the movement of the second sliding sleeve 6-2 can immediately drive the first sliding sleeve 6-1 to move. Additionally, because the linkage rod 6-3 is hingedly connected to the first sliding sleeve 6-1 and the second sliding sleeve 6-2, the rotation of the first sliding sleeve 6-1 does not necessarily drive the rotation of the second sliding sleeve 6-2.

[0059] Further, the elastic force of the elastic support plate 10 satisfies the following formula:

[0060]

[0061] Wherein, F2 represents the elastic force, a represents the maximum acceleration of the electromagnet 13 moving upward, g represents the acceleration due to gravity, m represents the average weight of the user, l1 represents the distance between the correction rod 4 and the first sliding sleeve 6-1, and l2 represents the distance between the upper end of the elastic support plate 10 and the first sliding sleeve 6-1.

[0062] In order to enable a person to be fixed on the correction rod 4, in this embodiment, further, a strap 11 is included. The strap 11 includes more than 1 piece, and the strap 11 is fixedly connected to the correction rod 4 and is distributed along the length direction of the correction rod 4.

[0063] A usage method of a fitness device, the method being:

[0064] Sit straight on the trampoline cloth 2 with both legs, and lean the back against the correction rod 4 so that the upper body and the lower body form a 90° angle;

[0065] Vibrate the trampoline cloth 2.

[0066] Further, the method of vibrating the trampoline cloth 2 includes:

[0067] Free vibration, using the initial kinetic energy when a person sits on the trampoline to vibrate freely on the trampoline, the motor 8 does not rotate, and the electromagnet 13 is not energized;

[0068] Forced vibration, using the rotation of the motor 8 to drive the electromagnet 13 to reciprocate up and down, and the electromagnet 13 is energized;

[0069] Damped vibration. The motor 8 does not rotate, but the electromagnet 13 is energized to generate damping on the first sliding sleeve 6-1 and the second sliding sleeve 6-2.

[0070] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A trampoline-based fitness equipment, including a trampoline, the trampoline is composed of a frame (1), springs (3) and a trampoline cloth (2), the number of the springs (3) is more than 3, and the trampoline cloth (2) is connected to the frame (1) through the springs (3), characterized in that, It further includes a correction rod (4); The correction rod (4) is connected to the frame (1). The correction rod (4) is located directly above the trampoline cloth (2). The length direction of the correction rod (4) is the vertical direction. By relying on the correction rod (4) with the back, the upper body and the lower body of the exerciser can form a 90° angle; It further includes a first sliding sleeve (6-1), a sliding rod (5) and a connecting rod (7). The lower end of the sliding rod (5) is fixedly connected to the frame (1). The direction of the sliding rod (5) is the vertical direction. The first sliding sleeve (6-1) is sleeved on the sliding rod (5) and can slide up and down; One end of the first sliding sleeve (6-1) is fixedly connected to one end of the connecting rod (7). The other end of the connecting rod (7) is fixedly connected to the middle part of the correction rod (4). The central axis of the correction rod (4) is parallel to the central axis of the first sliding sleeve (6-1); It further includes a second sliding sleeve (6-2) and an elastic support plate (10); The upper end of the elastic support plate (10) is fixedly connected to the connecting rod (7). The lower end of the elastic support plate (10) is fixedly connected to the middle part of the second sliding sleeve (6-2). When no external force other than gravity acts on the first sliding sleeve (6-1), the second sliding sleeve (6-2) and the connecting rod (7), the central axes of the first sliding sleeve (6-1) and the second sliding sleeve (6-2) form an angle greater than 0° with the central axis of the sliding rod (5), and the central axes of the first sliding sleeve (6-1) and the second sliding sleeve (6-2) incline in opposite directions of the connecting rod (7). The second sliding sleeve (6-2) is made of metal.

2. The trampoline-based fitness equipment according to claim 1, wherein It further includes a controller (18), a motor (8), a lead screw (11), a housing (14), a conductive slip ring (17), a ball nut (12), an electromagnet (13) and a power supply (9); The sliding rod (5) is hollow, and a groove (5-1) is provided on the side wall of the sliding rod (5) along the length direction of the sliding rod (5). The groove (5-1) makes the projection of the sliding rod (5) on the plane perpendicular to the central axis of the sliding rod (5) not closed. The sliding rod (5) is made of metal. The motor (8) is arranged at the upper end of the sliding rod (5); The rotating shaft of the motor (8) is fixedly connected to the lead screw (11). The central axis of the lead screw (11) coincides with the central axis of the rotating shaft of the motor (8) and the central axis of the inner cavity of the sliding rod (5). The lead screw (11) is distributed from the trampoline cloth (2) to the upper end of the sliding rod (5). The ball nut (12) is threadedly connected to the lead screw (11); The ball nut (12) is arranged in the housing (14). The housing (14) is made of metal. The outer side surface of the housing (14) matches the inner cavity of the sliding rod (5). A guide block (12-1) matching the groove (5-1) is provided on the side wall of the housing (14). The housing (14) is slidably mounted up and down in the inner cavity of the sliding rod (5). The housing (14) and the ball nut (12) are fixedly connected by an upper insulating plate (16) and a lower insulating plate (15). The upper insulating plate (16), the lower insulating plate (15), the housing (14) and the ball nut (12) enclose a cylindrical cavity with a central screw hole, and an electromagnet (13) is arranged in the cylindrical cavity; One pole of the electromagnet (13) is electrically connected to the ball nut (12), and the other pole of the electromagnet (13) is electrically connected to the housing (14); A conductive slip ring (17) is connected to the lead screw (11) outside the stroke range of the ball nut (12), and the conductive slip ring (17) is electrically connected to one pole of the power supply (9); The slide bar (5) is electrically connected to the other pole of the power supply (9); The motor (8) is electrically connected to the controller (18), and the power supply (9) is electrically connected to the controller (18); The first sliding sleeve (6-1) is made of metal.

3. The trampoline-based fitness equipment according to claim 2, characterized in that, A deformation prevention block (5-2) is further provided inside the groove body (5-1) near the outer side surface of the slide bar (5), and the deformation prevention block (5-2) is made of insulating material.

4. The trampoline-based fitness equipment according to claim 2, characterized in that, It further includes a linkage rod (6-3). The upper end of the linkage rod (6-3) is hinged to the lower end of the first sliding sleeve (6-1), the lower end of the linkage rod (6-3) is hinged to the upper end of the second sliding sleeve (6-2), and the hinge joints of the linkage rod (6-3) with the first sliding sleeve (6-1) and the second sliding sleeve (6-2) are located on one side of the connecting rod (7).

5. The trampoline-based fitness equipment according to claim 2, characterized in that, The elastic force of the elastic support plate (10) satisfies the following formula: Among them, represents the elastic force, represents the maximum acceleration of the electromagnet (13) moving upward, and g represents the acceleration due to gravity, represents the average weight of the user, represents the distance between the correction rod (4) and the first sliding sleeve (6-1), represents the distance between the upper end of the elastic support plate (10) and the first sliding sleeve (6-1).

6. The trampoline-based fitness equipment according to any one of claims 1 to 5, characterized in that, It further includes straps. There are more than 1 strap, and the straps are fixedly connected to the correction rod (4) and are distributed along the length direction of the correction rod (4).

7. A method for using the fitness equipment according to claim 2, characterized in that, The method is as follows: Sit straight-legged on the trampoline cloth (2), and lean the back against the correction rod (4) so that the upper body and the lower body form a 90° angle; Vibrate the trampoline cloth (2).

8. The method for using a fitness device according to claim 7, characterized in that, The method for vibrating the trampoline cloth (2) includes: Free vibration, using the initial kinetic energy when a person sits on the trampoline to vibrate freely on the trampoline, the motor (8) does not rotate, and the electromagnet (13) is not energized; Forced vibration, using the rotation of the motor (8) to drive the electromagnet (13) to move up and down reciprocally, and the electromagnet (13) is energized; Damped vibration, the motor (8) does not rotate, but the electromagnet (13) is energized to generate damping on the first sliding sleeve (6-1) and the second sliding sleeve (6-2).

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