Tension dorsal muscle trainer for physical training

Abstract

The invention discloses a tensile dorsal muscle trainer for physical training, which comprises a bottom plate, a vertical rod is fixedly connected to the upper side of the bottom plate, a top plate is fixedly connected to the upper end of the vertical rod, a lifting plate is slidably connected to the vertical rod, a threaded lifting device is arranged on the side wall of the lifting plate, and a moving plate is slidably connected to the top of the vertical rod. An extrusion spring is fixedly connected between the moving plate and the lifting plate, the vertical rod is sleeved with the extrusion spring, the extrusion spring is in a compressed state, a stretching part is fixedly connected to the bottom side wall of the moving plate, a guide device is arranged on the bottom side wall of the top plate, and the stretching part is connected with a magnetic block through the guide device. And the magnetic block is connected with a handle through an electromagnetic damping device. The high-tension dorsal muscle training device is reasonable in design, by means of electromagnetic resistance of the Lenz's law, in the stretching and falling process of the high-tension dorsal muscle training device, rapid pulling recovery cannot be generated, arms are prevented from being pulled, and safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of back muscle training, in particular to a tension back muscle trainer for sports training. Background Art

[0002] With the improvement of people's health awareness, the importance of fitness has been paid attention to, and various fitness methods have become more and more popular. Usually some students study and work for a long time, and often maintain the same sitting posture. In addition, the posture is incorrect and the study intensity is high, which inevitably causes back muscle soreness and muscle fatigue, and then causes low back pain. In severe cases, it can cause symptoms such as back muscle strain and lumbar disc herniation. The high-tension back muscle trainer mainly exercises the latissimus dorsi, trapezius, deltoid and biceps, which can improve the strength of the back muscles, enhance the stretching force of the back muscles and abdominal muscle ligaments, strengthen the coordination and cooperation ability of the small back muscle groups, increase the flexibility and flexibility of the back muscles, and effectively improve the exercise endurance of the spine.

[0003] In the process of stretching and falling back, the existing high-tension back muscle trainer for physical education teaching has a large reaction force, which can easily cause the handle to fall off due to the trainer's hand slipping, etc., which brings certain hidden dangers to the trainer's safety. Summary of the invention

[0004] The present invention provides a back muscle tension training device for sports training to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A back muscle tension trainer for sports training comprises a bottom plate, a vertical rod is fixedly connected to the upper side of the bottom plate, the upper end of the vertical rod is fixedly connected to the top plate, a lifting plate is slidably connected to the vertical rod, a threaded lifting device is provided on the side wall of the lifting plate, a moving plate is slidably connected to the top of the vertical rod, an extrusion spring is fixedly connected between the moving plate and the lifting plate, the extrusion spring is sleeved on the vertical rod, the extrusion spring is in a compressed state, a stretching device is fixedly connected to the bottom side wall of the moving plate, a guide device is provided on the bottom side wall of the top plate, the stretching device is connected to a magnetic block through the guide device, and the magnetic block is connected to a handle through an electromagnetic damping device.

[0006] Preferably, the threaded lifting device comprises a threaded rod, the threaded rod is rotatably connected to the side wall of the base plate via a bearing, a handle cover is fixedly connected to the threaded rod, and the lifting plate is threadedly connected to the threaded rod.

[0007] Preferably, the handle cover is located at the bottom of the threaded rod, and the handle cover is provided with anti-slip grooves.

[0008] Preferably, the guide device includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are both fixedly connected to the bottom side wall of the top plate, and the bottom ends of the first mounting plate and the second mounting plate are rotatably connected to a first pulley and a second pulley respectively.

[0009] Preferably, the guide device includes an L-shaped rod, which is fixedly connected to the bottom side wall of the top plate, the bottom end of the L-shaped rod is fixedly connected to a fixing cylinder, an induction wire is wound on the fixing cylinder, the upper end of the bottom plate is fixedly connected to a fixing column, the upper end of the fixing column is fixedly connected to a vertically arranged sliding rheostat, the sliding piece of the sliding rheostat is fixedly connected to the lifting plate, a DC power supply is provided on the side wall of the fixing column, one end of the induction wire is electrically connected to the upper end of the sliding rheostat, the other end of the induction wire is electrically connected to the DC power supply, the sliding piece is electrically connected to the DC power supply through an electric wire, the magnetic block is slidably connected in the fixing cylinder, the bottom side wall of the magnetic block is fixedly connected to a connecting rod, the bottom end of the connecting rod extends out of the fixing cylinder and is fixedly connected to a handle.

[0010] Preferably, the fixing tube is made of copper.

[0011] Preferably, when the slider slides downward, the resistance increases, the current in the induction wire decreases, and the magnetic flux in the fixed cylinder decreases; when the slider slides upward, the resistance decreases, the current in the induction wire increases, and the magnetic flux in the fixed cylinder increases.

[0012] Preferably, the stretching is a steel wire rope.

[0013] Preferably, a seat is fixedly connected to the bottom side wall of the base plate, and the handle is located above the seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The invention is reasonably designed and utilizes the electromagnetic resistance of Lenz's law so that rapid pulling recovery will not occur during the process of stretching and falling back using the high-tension back muscle trainer, thereby preventing arm strain and having high safety.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1This is a schematic diagram of the three-dimensional structure of a back muscle tension training device for sports training proposed by the present invention; Figure 2 This is a three-dimensional cross-sectional structural schematic diagram of a back muscle tension training device for sports training proposed by the present invention; Figure 3 It is a schematic diagram of the connection structure between the fixed cylinder and the sliding rheostat in the present invention; Figure 4 It is a schematic diagram of the front cross-sectional structure of the fixing cylinder in the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Top plate; 2. Moving plate; 3. First mounting plate; 4. Extrusion spring; 5. First pulley; 6. Lifting plate; 7. Sliding rheostat; 8. DC power supply; 9. Vertical rod; 10. Threaded rod; 11. Handle cover; 12. Bottom plate; 13. Seat; 14. Fixed column; 15. Handle; 16. Fixed cylinder; 17. Induction wire; 18. Connecting rod; 19. Magnetic block; 20. Second pulley; 21. Stretching; 22. L-shaped rod; 23. Second mounting plate; 24. Slide. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0019] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] See also Figures 1 to 4In an embodiment of the present invention, a back muscle tension trainer for sports training includes a bottom plate 12, a vertical rod 9 is fixedly connected to the upper side of the bottom plate 12, an upper end of the vertical rod 9 is fixedly connected to a top plate 1, a lifting plate 6 is slidably connected to the vertical rod 9, a threaded lifting device is provided on the side wall of the lifting plate 6, a moving plate 2 is slidably connected to the top of the vertical rod 9, an extrusion spring 4 is fixedly connected between the moving plate 2 and the lifting plate 6, the extrusion spring 4 is sleeved on the vertical rod 9, the extrusion spring 4 is in a compressed state, a stretching 21 is fixedly connected to the bottom side wall of the moving plate 2, the stretching 21 is a steel wire rope, a guide device is provided on the bottom side wall of the top plate 1, the stretching 21 is connected to a magnetic block 19 through the guide device, the magnetic block 19 is connected to a handle 15 through an electromagnetic damping device, a seat 13 is fixedly connected to the bottom side wall of the bottom plate 12, and the handle 15 is located above the seat 13.

[0022] Specifically, the threaded lifting device includes a threaded rod 10, which is rotatably connected to the side wall of the base plate 12 through a bearing. A handle cover 11 is fixedly connected to the threaded rod 10. The lifting plate 6 is threadedly connected to the threaded rod 10. The handle cover 11 is located at the bottom of the threaded rod 10 and is provided with anti-slip grooves.

[0023] Specifically, the guide device includes a first mounting plate 3 and a second mounting plate 23, both of which are fixedly connected to the bottom side wall of the top plate 1, and the bottom ends of the first mounting plate 3 and the second mounting plate 23 are rotatably connected to the first pulley 5 and the second pulley 20 respectively.

[0024] Specifically, the guide device includes an L-shaped rod 22, which is fixedly connected to the bottom side wall of the top plate 1, and the bottom end of the L-shaped rod 22 is fixedly connected to a fixed cylinder 16, on which an induction wire 17 is wound, and the upper end of the bottom plate 12 is fixedly connected to a fixed column 14, and the upper end of the fixed column 14 is fixedly connected to a vertically arranged sliding rheostat 7, and a slide 24 of the sliding rheostat 7 is fixedly connected to the lifting plate 6, and a DC power supply 8 is provided on the side wall of the fixed column 14, one end of the induction wire 17 is electrically connected to the upper end of the sliding rheostat 7, and the other end of the induction wire 17 is electrically connected to the DC power supply 8, and the slide 24 is electrically connected to the DC power supply 8 through an electric wire, and a magnetic block 19 is slidably connected in the fixed cylinder 16, and the bottom side wall of the magnetic block 19 is fixedly connected to a connecting rod 18, and the bottom end of the connecting rod 18 extends out of the fixed cylinder 16 and is fixedly connected to a handle 15, and the fixed cylinder 16 is made of copper; When the slider 24 slides downward, the resistance increases, the current in the induction wire 17 decreases, and the magnetic flux in the fixed cylinder 16 decreases; when the slider 24 slides upward, the resistance decreases, the current in the induction wire 17 increases, and the magnetic flux in the fixed cylinder 16 increases.

[0025] The working principle of the present invention is: When the user sits on the seat 13, he can grab the handle 15 and pull it downward. When the handle 15 is downward, the connecting rod 18 and the magnetic block 19 can drive the stretching 21 to pull downward. The stretching 21 compresses the squeezing spring 4 through the moving plate 2, and then the back muscles can be exercised by pulling the handle 15 downward. When the handle 15 is released, the squeezing spring 4 drives the moving plate 2 to rise. The moving plate 2 can drive the magnetic block 19 to rise through the stretching 21. The magnetic block 19 is in the fixed tube 16. Since the fixed tube 16 is wrapped with an energized induction wire 17, the movement of the magnetic block 19 in the fixed tube 16 is affected by the electromagnetic resistance. The magnetic block 19 will rise slowly, and will not produce a rapid pull recovery, thereby preventing arm strain; When it is necessary to adjust the pulling force of the handle 15, the handle sleeve 11 can be grasped to drive the threaded rod 10 to rotate forward and backward. The rotation of the threaded rod 10 can drive the lifting plate 6 to move up and down, and then adjust the tightness of the extrusion spring 4 to adjust the pulling force of the handle 15. Therefore, the lifting plate 6 rises, the greater the pulling force and the recovery force of the handle 15, the lower the lifting plate 6 drops, the smaller the pulling force and the recovery force of the handle 15, and the lifting and lowering of the lifting plate 6 can drive the resistance of the sliding rheostat 7 to decrease and increase respectively, and then drive the magnetic flux in the fixed cylinder 16 to increase and decrease. According to Lenz's law, the electromagnetic resistance of the magnetic block 19 in the fixed cylinder 16 is positively correlated with the size of the magnetic flux. Therefore, when the pulling force and the recovery force are greater, the movement of the magnetic block 19 in the fixed cylinder 16 is more affected by the electromagnetic resistance, thereby ensuring the stability of the lifting and recovery process of the handle 15.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A back muscle training device for sports training, comprising a bottom plate (12), characterized in that: The upper side of the bottom plate (12) is fixedly connected to a vertical rod (9), the upper end of the vertical rod (9) is fixedly connected to a top plate (1), the vertical rod (9) is slidably connected to a lifting plate (6), a threaded lifting device is provided on the side wall of the lifting plate (6), the top of the vertical rod (9) is slidably connected to a moving plate (2), a pressing spring (4) is fixedly connected between the moving plate (2) and the lifting plate (6), the pressing spring (4) is sleeved on the vertical rod (9), the pressing spring (4) is in a compressed state, a stretching device (21) is fixedly connected to the bottom side wall of the moving plate (2), a guiding device is provided on the bottom side wall of the top plate (1), the stretching device (21) is connected to a magnetic block (19) through the guiding device, and the magnetic block (19) is connected to a handle (15) through an electromagnetic damping device.

2. A back muscle tension training device for sports training according to claim 1, characterized in that: The threaded lifting device comprises a threaded rod (10), wherein the threaded rod (10) is rotatably connected to the side wall of a base plate (12) via a bearing, a handle cover (11) is fixedly connected to the threaded rod (10), and the lifting plate (6) is threadedly connected to the threaded rod (10).

3. A back muscle tension training device for sports training according to claim 2, characterized in that: The handle cover (11) is located at the bottom of the threaded rod (10), and anti-slip grooves are provided on the handle cover (11).

4. A back muscle tension training device for sports training according to claim 3, characterized in that: The guide device comprises a first mounting plate (3) and a second mounting plate (23), the first mounting plate (3) and the second mounting plate (23) are both fixedly connected to the bottom side wall of the top plate (1), and the bottom ends of the first mounting plate (3) and the second mounting plate (23) are rotatably connected to a first pulley (5) and a second pulley (20), respectively.

5. A back muscle tension training device for sports training according to claim 4, characterized in that: The guide device comprises an L-shaped rod (22), the L-shaped rod (22) being fixedly connected to the bottom side wall of the top plate (1), the bottom end of the L-shaped rod (22) being fixedly connected to a fixing cylinder (16), the fixing cylinder (16) having an induction wire (17) wound around it, the upper end of the bottom plate (12) being fixedly connected to a fixing column (14), the upper end of the fixing column (14) being fixedly connected to a vertically arranged sliding rheostat (7), the sliding piece (24) of the sliding rheostat (7) being fixedly connected to the lifting plate (6), the fixing column (14) A DC power supply (8) is provided on the side wall of the sliding resistor (14), one end of the induction wire (17) is electrically connected to the upper end of the sliding resistor (7), the other end of the induction wire (17) is electrically connected to the DC power supply (8), the sliding plate (24) is electrically connected to the DC power supply (8) through the wire, the magnetic block (19) is slidably connected in the fixed cylinder (16), the bottom side wall of the magnetic block (19) is fixedly connected to a connecting rod (18), and the bottom end of the connecting rod (18) extends out of the fixed cylinder (16) and is fixedly connected to a handle (15).

6. A back muscle tension training device for sports training according to claim 5, characterized in that: The fixing cylinder (16) is made of copper.

7. A back muscle tension training device for sports training according to claim 6, characterized in that: When the sliding piece (24) slides downward, the resistance increases, the current in the induction wire (17) decreases, and the magnetic flux in the fixed cylinder (16) decreases; when the sliding piece (24) slides upward, the resistance decreases, the current in the induction wire (17) increases, and the magnetic flux in the fixed cylinder (16) increases.

8. The back muscle tension training device for sports training according to claim 7, characterized in that: The stretching (21) is a steel wire rope.

9. A back muscle tension training device for sports training according to claim 8, characterized in that: A seat (13) is fixedly connected to the bottom side wall of the bottom plate (12), and the handle (15) is located above the seat (13).

Images