A muscle training back pedal machine and its use method

Abstract

The present invention relates to the technical field of sports training equipment, and discloses a back pedaling machine for muscle training and a method of using the same, comprising a back pedaling machine, a back pedaling bracket and a pedal seat provided on the back pedaling machine, the pedal seat being slidably mounted on the back pedaling bracket and being used for exercising a person's leg muscles, a pressure regulating box being provided on the back pedaling bracket for storing water flow, an open-hole pressure regulating plate being provided in the pressure regulating box, the open-hole pressure regulating plate and the pressure regulating box being in a sliding connection state, the present invention adopts the resistance generated by the movement between the open-hole pressure regulating plate and the water flow as training pressure, and adjusts the pressure during training by controlling the amount of water flow in the pressure regulating box, the adjustment is convenient, and the training pressure can be adjusted in time according to the training requirements required by different people, while ensuring the training effect, and the back pedaling machine exercised in this way has a low production cost and is easy to popularize, and during transportation, only the water flow needs to be discharged to reduce its own weight, which is more conducive to the transportation of the back pedaling machine.

Description

Technical Field

[0001] The present invention relates to the technical field of sports training equipment, in particular to a back-pedaling machine for muscle training and a use method thereof. Background Art

[0002] Muscle strength is the foundation of human athletic ability and directly affects an individual's athletic performance, body posture, metabolic efficiency, and quality of life. With changes in modern lifestyles (such as prolonged sitting and reduced exercise), the problems of muscle atrophy, decreased strength, and increased risk of sports injuries are becoming increasingly prominent. Therefore, scientific and efficient muscle training equipment has become an important need in the fields of sports rehabilitation, fitness training, and competitive sports.

[0003] There are many types of muscle training devices available, such as: dumbbells / barbells, which use free weights with adjustable weights to achieve resistance training for multiple muscle groups throughout the body. They are highly flexible but require users to control the movement trajectory themselves, making them suitable for trainers with a certain level of basic training skills; Smith machines, which combine a barbell with fixed slides to provide a stable vertical training path, reducing the risks of movements such as squats and bench presses, making them suitable for home or gym use; leg presses, also known as leg presses or leg presses, are one of the common strength training equipment in gyms, mainly used to train lower limb muscles.

[0004] Today's leg press machines transfer resistance directly to the legs through a fixed motion trajectory, which has the effect of maximizing the activation of the quadriceps. During training, the exerciser's gluteus maximus, hamstrings and calf muscles work together as auxiliary muscle groups in the movement, which can achieve the beneficial effect of improving the overall strength of the lower limbs. At the same time, it is safer during training. For example, the back is close to the cushion during training, avoiding vertical pressure on the spine during movements such as squats. The fixed motion trajectory of the equipment reduces the risk of joint injury due to movement deformation.

[0005] However, the back pedal machine also has the following disadvantages when used:

[0006] Existing leg presses are divided into traditional weight-plate leg presses and electromagnetic / pneumatic resistance leg presses. Weight-plate leg presses adjust resistance by adding or removing weight plates. The pressure is a fixed value, and the resistance is constant during training. It cannot simulate the characteristics of muscle force changing with angle in real exercise; electromagnetic / pneumatic resistance leg presses can achieve dynamic resistance adjustment through electromagnetic or pneumatic systems, but the equipment cost is high and the popularity is low. Most gyms still mainly use weight-plate type leg presses. Summary of the Invention

[0007] The object of the present invention is to provide a muscle training back pedal machine and a method of using the same, so as to solve the problems raised in the above background technology.

[0008] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0009] The present invention is a back pedaling machine for muscle training, comprising a back pedaling machine, a back pedaling bracket and a pedal seat being provided on the back pedaling machine, the pedal seat being slidably mounted on the back pedaling bracket and being used for exercising the leg muscles of an exerciser, a pressure regulating box being provided on the back pedaling bracket for storing water flow, an open-hole pressure regulating plate being provided in the pressure regulating box, the open-hole pressure regulating plate and the pressure regulating box being in a sliding connection with the pressure regulating box, a force transmission mechanism being provided on the back pedaling bracket, the force transmission mechanism being used for driving the open-hole pressure regulating plate to move in the pressure regulating box when the pedal seat moves, and converting the resistance of the water flow encountered by the open-hole pressure regulating plate during the movement into the resistance of the exerciser pushing the pedal seat to move, thereby achieving the purpose of training.

[0010] Furthermore, the force transmission mechanism is composed of a bow-shaped pressure connecting plate, a plate-type cable and a force transmission assembly. The bow-shaped pressure connecting plate is arranged above the pressure regulating box, and the bow-shaped pressure connecting plate is slidingly connected to the inverted pedal bracket. The plate-type cable is arranged on the inverted pedal bracket, one end of the plate-type cable is connected to the bow-shaped pressure connecting plate, and the other end of the plate-type cable is connected to the pedal seat. When the pedal seat moves, the bow-shaped pressure connecting plate is pulled up by the plate-type cable. The force transmission assembly is arranged on the inverted pedal bracket, and part of the force transmission assembly extends into the pressure regulating box, which is used to convert the rising force of the bow-shaped pressure connecting plate into the rising force of the open-hole pressure regulating plate.

[0011] Furthermore, the force transmission assembly is composed of an upper force transmission member, a lower force transmission member and a force transmission tube. The upper force transmission member is installed on the inverted pedal bracket, and the lower force transmission member is installed on the pressure regulating box. The upper force transmission member is composed of an upper air cylinder and an upper piston push rod. The upper air cylinder is installed on the inverted pedal bracket, and the upper piston push rod is slidably installed on the upper air cylinder. One end of the upper piston push rod is connected to the bow-shaped pressure connecting plate. The lower force transmission member is composed of a lower air cylinder and a lower piston push rod. The lower air cylinder is installed on the pressure regulating box, and the lower piston push rod is slidably installed on the lower air cylinder. One end of the lower piston push rod is connected to the open-hole pressure regulating plate. The force transmission tube is arranged on one side of the pressure regulating box, and both ends of the force transmission tube are respectively connected to the upper air cylinder and the lower air cylinder for conveying the airflow between the upper air cylinder and the lower air cylinder.

[0012] Furthermore, a pressure relief groove is provided on the open-hole pressure regulating plate, an inner hole partition plate is installed on the inner wall of the pressure relief groove, a plurality of water-passing grooves are provided on the inner hole partition plate, and a convex cylinder is installed on the open-hole pressure regulating plate. The convex cylinder is trapezoidal in shape, and both sides of the convex cylinder are openings. The convex cylinder and the pressure relief groove are coaxially arranged, and an opening blocking piece is provided in the convex cylinder. One side of the opening blocking piece is flush with one end of the convex cylinder, and the opening blocking piece is used to block the side port of the convex cylinder away from the pressure relief groove. A pressure regulating telescopic rod is installed on the inner hole partition plate, and the telescopic shaft of the pressure regulating telescopic rod is connected to the opening blocking piece. A telescopic spring is sleeved on the pressure regulating telescopic rod, one end of the telescopic spring is connected to the opening blocking piece, and the other end of the telescopic spring is connected to the inner hole partition plate.

[0013] Furthermore, when the open-hole pressure regulating plate rises, both open blocking pieces are subject to the resistance of the water flow above. The open blocking piece located above moves toward the inside of the convex cylinder, and the open blocking piece located below extends out of the convex cylinder. The water flow above flows downward through the pressure relief groove, reducing the resistance encountered by the open-hole pressure regulating plate. At the same time, when the open-hole pressure regulating plate descends, it is affected by the buoyancy of the water flow, slowing down the descending speed of the open-hole pressure regulating plate. By setting the open blocking piece, the buoyancy encountered by the open-hole pressure regulating plate can be increased.

[0014] Furthermore, an external pressure relief frame is installed on the pressure regulating box, and both sides of the external pressure relief frame are connected to the pressure regulating box. The ports on both sides of the external pressure relief frame connected to the pressure regulating box are symmetrically arranged on both sides of the open-hole pressure regulating plate in a static state. A directional pressure control block is slidably installed on the external pressure relief frame, and a horizontal thrust spring is installed on the external pressure relief frame. One end of the horizontal thrust spring is connected to the directional pressure control block. The directional pressure control block controls the flow of water above the open-hole pressure regulating plate to flow back to the pressure regulating box through the external pressure relief frame, thereby adjusting the water flow resistance of the open-hole pressure regulating plate, and further adjusting the force of the exerciser pushing the pedal seat, so that the training pressure of the exerciser is adjustable.

[0015] Furthermore, an adjusting motor is installed on the external pressure relief frame, and a pressure blocking bar is slidably installed on the external pressure relief frame. The pressure blocking bar is used to accurately adjust the movable range of the directional pressure control block. A horizontal thread moving component is provided on the external pressure relief frame. The horizontal thread moving component is used to connect the adjusting motor and the pressure blocking bar, so that the adjusting motor can drive the pressure blocking bar to move its position when it rotates.

[0016] Furthermore, a fixed cylinder is installed on the inverted pedal bracket, a pressure transmission bag is installed on the fixed cylinder, and a transmission bag pressure pushing frame is installed on the fixed cylinder. One end of the transmission bag pressure pushing frame extends out of the fixed cylinder, and an arc-shaped support plate is provided on one side of the fixed cylinder. The arc-shaped support plate is connected to the transmission bag pressure pushing frame. A water pipe is installed on the fixed cylinder, one end of the water pipe is connected with the pressure transmission bag, and the other end of the water pipe is connected with the pressure regulating box. When the water flow in the pressure regulating box is squeezed, the water flow enters the pressure transmission bag through the water pipe and pushes the pressure transmission bag to expand, pushing the transmission bag pressure pushing frame to move. In this way, when the pedal seat falls back, it contacts the arc-shaped support plate and squeezes the transmission bag pressure pushing frame and the pressure transmission bag, so that the falling speed of the pedal seat is reduced, thereby improving the safety of the pedal seat.

[0017] Furthermore, a manual valve is installed on the water pipe, which is used to control the water flow in the water pipe. The flow in the water pipe can be controlled according to the exercise needs of the exerciser. When the manual valve is opened, during the rising process of the open-hole pressure regulating plate, part of the water flow is discharged from the pressure regulating box through the water pipe, thereby reducing the water flow resistance of the open-hole pressure regulating plate. When the manual valve is closed, the water flow resistance of the open-hole pressure regulating plate can be avoided from being reduced. During the falling process of the pedal seat, the flow of the water pipe is controlled by the manual valve, which can indirectly control the falling speed of the conduction bag pressure push frame when it is squeezed, and then control the falling speed of the pedal seat, thereby improving the safety of the use of the pedal seat.

[0018] The present invention also includes a method for using a muscle training back pedal machine, comprising the following steps:

[0019] S1: Deliver / output appropriate amount of water flow into / out of the pressure regulating box according to exercise needs;

[0020] S2: Start the regulating motor to adjust the position of the pressure blocking strip, and control the movable range of the directional pressure control block according to the needs of exercise;

[0021] S3: The exerciser lies on the inverted pedal machine with both feet in contact with the pedal seat and legs stretched, pushing the pedal seat to move. The force transmission mechanism drives the perforated pressure regulating plate to move in the pressure regulating box. The water flow exerts resistance on the perforated pressure regulating plate, which is converted into resistance to the movement of the pedal seat, achieving the exercise effect.

[0022] S4: The legs perform contraction movements. The pedal seat is not affected by the resistance of the perforated pressure regulating plate. Its own weight provides training for the exerciser, reducing the pressure and alleviating the pressure on the exerciser's knees. The perforated pressure regulating plate is not affected by the thrust. Under the action of gravity, it falls back to its original state in the pressure regulating box, and then the exercise can be carried out again.

[0023] The present invention has the following beneficial effects:

[0024] (1) Compared with the traditional weight plate type back pedal machine and electromagnetic / pneumatic resistance back pedal machine, the present invention adopts the resistance generated by the movement between the open-hole pressure regulating plate and the water flow as the training pressure. The pressure during training is adjusted by controlling the amount of water flow in the pressure regulating box. The adjustment is convenient and the training pressure can be adjusted in time according to the training requirements of different people. At the same time, the training effect is guaranteed. In addition, the back pedal machine used for training in this way has a low production cost and is easy to popularize. During the transportation process, it only needs to discharge the water flow to reduce its own weight, which is more conducive to the transportation of the back pedal machine.

[0025] (2) The present invention can adjust the pressure of the water flow given by the perforated pressure regulating plate according to the speed at which the exerciser pushes the pedal seat by designing an external pressure relief frame, a directional pressure control block and a horizontal thrust spring, thereby achieving the effect of adjusting the reverse force brought by the water flow on the perforated pressure regulating plate. When the pedal seat is subjected to too much thrust and moves quickly, the rising speed of the perforated pressure regulating plate will also be accelerated synchronously. In this way, the perforated pressure regulating plate gives a greater pressure to the water flow, and the water flow resistance it encounters is also greater. The resistance plus the gravity of the pedal seat is the exercise pressure experienced by the exerciser, wherein part of the resistance will be converted into It is transformed into the thrust for pushing the directional pressure control block to move. When the resistance is greater, the moving distance of the directional pressure control block is greater, and the water flow rate flowing in the external pressure relief frame is greater. With the rapid loss of water flow above the open-hole pressure regulating plate, the pressure of the open-hole pressure regulating plate on the water flow is reduced, thereby reducing the resistance of the open-hole pressure regulating plate. When the resistance is reduced, the exercise pressure received by the exerciser is also reduced, and the directional pressure control block plays an adaptive adjustment effect, thereby enabling the inverted leg press machine to adaptively adjust the exercise pressure according to the exercise behavior of the exerciser, better cooperate with the exerciser's training, and improve the training effect.

[0026] (3) The present invention adjusts the position of the pressure blocking strip by setting an adjusting motor and a horizontal thread moving component, thereby limiting the moving range of the directional pressure control block, and then achieving the maximum flow rate of the water flowing through the external pressure relief frame. By controlling the maximum flow rate of the water flow through the external pressure relief frame, the maximum reduction value of the resistance of the water flow to the perforated pressure regulating plate is achieved. When the same pressure is applied to the perforated pressure regulating plate, the greater the water flow rate lost through the external pressure relief frame, the smaller the resistance encountered by the perforated pressure regulating plate. Conversely, the smaller the water flow rate lost, the greater the resistance encountered by the perforated pressure regulating plate. After limiting the flow rate of the external pressure relief frame, the maximum value of the gravity of the pedal seat plus the resistance of the perforated pressure regulating plate can be limited, and then the maximum value of the training pressure encountered by the trainee can be limited. This can limit the training behavior of the trainee, avoid excessive training of the trainee, and ensure the training safety of the trainee.

[0027] (4) The present invention transmits the water flow in the pressure regulating box by setting a water pipe so that the water flow can be delivered to the pressure transmission bag, and controls the flow in the water pipe by a manual valve, thereby further adjusting the resistance of the open-hole pressure regulating plate. The adjustment range is small, and the water flow moves into the pressure transmission bag, which can push the transmission bag pressure push frame and the arc-shaped support plate to move, thereby forming support for the pedal seat during the pedal seat falling back, slowing down the pedal seat falling back speed, and the falling back speed can be controlled by controlling the flow in the water pipe by the manual valve. The manual valve is close to the operator and is easy to operate. Therefore, when the trainee feels exhausted, the valve can be closed in time to achieve the effect of stopping the pedal from falling back, effectively increasing the safety of the back pedal machine.

[0028] (5) In the present invention, a pressure relief groove is provided on the perforated pressure regulating plate and is sealed by an open blocking piece. Thus, when the position of the directional pressure control block is fixed and the flow in the external pressure relief frame is fixed, when the perforated pressure regulating plate applies a greater pressure to the upper water flow, the water flow above the perforated pressure regulating plate can fall through the pressure relief groove, thereby reducing the pressure of the perforated pressure regulating plate on the upper water flow. In this way, when the exerciser applies a large thrust to the back pedal machine, when the thrust is greater than the pressure applied by the perforated pressure regulating plate to the upper water flow, the thrust can be further reduced by the pressure relief groove, thereby protecting the exerciser and preventing the exerciser from being injured by the reverse force due to the excessive thrust applied to the pedal seat, thereby ensuring the safety of the back pedal machine.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall structure of another aspect of the present invention;

[0033] Figure 3 It is a schematic cross-sectional view of some components of the present invention;

[0034] Figure 4It is a schematic cross-sectional view of the pressure regulating box and the external pressure relief frame in the present invention;

[0035] Figure 5 for Figure 4 The enlarged structural diagram of part A is shown;

[0036] Figure 6 Schematic diagram of the structure of the force transmission component 6 in the present invention;

[0037] Figure 7 Schematic diagram of the cross-sectional structure of the fixed cylinder in the present invention;

[0038] Figure 8 It is a schematic cross-sectional structural diagram of the perforated pressure regulating plate of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] In the figure: 1. Inverted pedal bracket; 2. Pedal seat; 3. Pressure regulating box; 4. Plate cable; 5. Bow-shaped pressure connecting plate; 6. Force transmission assembly; 601. Upper force transmitting member; 602. Lower force transmitting member; 603. Force transmission tube; 7. Open-hole pressure regulating plate; 8. Directional pressure control block; 9. External pressure relief frame; 10. Horizontal thrust spring; 11. Pressure blocking strip; 12. Horizontal thread moving assembly; 13. Adjusting motor; 14. Inner hole partition plate; 15. Open blocking piece; 16. Pressure regulating telescopic rod; 17. Telescopic spring; 18. Fixed cylinder; 19. Water pipe; 20. Pressure transmission bag; 21. Transmission bag pressure push frame; 22. Arc-shaped abutment plate; 23. Manual valve. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1-8As shown, the present invention is a muscle training back pedal machine, including a back pedal machine, a back pedal bracket 1 and a pedal seat 2 are provided on the back pedal machine, the pedal seat 2 is slidably installed on the back pedal bracket 1, and is used to exercise the leg muscles of the exerciser. The back pedal machine is constructed using existing technology, and a seat is provided on it for the exerciser to sit on. A pressure regulating box 3 is provided on the back pedal bracket 1 for storing water flow, and a water inlet pipe and a water outlet pipe are provided on one side of the pressure regulating box 3. Electromagnetic valves are provided on the water inlet pipe and the water outlet pipe to control the water flow in and out of the pressure regulating box 3 through signals. A pressure observation tube is provided on the pressure regulating box 3, and the water flow height in the pressure observation tube is observed, thereby Understand the water flow capacity in the pressure regulating box 3. An open-hole pressure regulating plate 7 is provided in the pressure regulating box 3. The open-hole pressure regulating plate 7 and the pressure regulating box 3 are in a sliding connection state. The outer wall of the open-hole pressure regulating plate 7 is in contact with the inner wall of the pressure regulating box 3 with a small gap, and does not need to be too precise, thereby reducing the production cost of the inverted pedaling machine. A force transmission mechanism is provided on the inverted pedaling bracket 1. The force transmission mechanism is used to drive the open-hole pressure regulating plate 7 to move in the pressure regulating box 3 when the pedal seat 2 moves, and converts the resistance of the water flow encountered by the open-hole pressure regulating plate 7 during the movement into the resistance of the exerciser to push the pedal seat 2 to move, thereby achieving the purpose of training.

[0043] The force transmission mechanism is composed of a bow-shaped pressure connecting plate 5, a plate-type cable 4 and a force transmission assembly 6. The bow-shaped pressure connecting plate 5 is arranged above the pressure regulating box 3, and the bow-shaped pressure connecting plate 5 is slidably connected to the inverted pedal bracket 1. The plate-type cable 4 is arranged on the inverted pedal bracket 1. One end of the plate cable 4 is connected to the bow-shaped pressure connecting plate 5, and the other end of the plate cable 4 is connected to the pedal seat 2. When the pedal seat 2 moves, the bow-shaped pressure connecting plate 5 is pulled up by the plate cable 4. The force transmission assembly 6 is arranged on the inverted pedal bracket 1, and part of the force transmission assembly 6 extends into the pressure regulating box 3, which is used to convert the rising force of the bow-shaped pressure connecting plate 5 into the rising force of the open-hole pressure regulating plate 7. The force transmission assembly 6 is composed of an upload force piece 601, a lower force transmission piece 602 and a force transmission tube 603. The upload force piece 601 is installed on the inverted pedal bracket 1, and the lower force transmission piece 602 is installed on the pressure regulating box 3. The upload force piece 601 is composed of an upload air cylinder and an upper active The piston push rod is composed of the upper air cylinder installed on the back pedal bracket 1, the upper piston push rod is slidably installed on the upper air cylinder, one end of the upper piston push rod is connected to the bow pressure connecting plate 5, the lower force transmission member 602 is composed of the lower air cylinder and the lower piston push rod, the lower air cylinder is installed on the pressure regulating box 3, the lower piston push rod is slidably installed on the lower air cylinder, one end of the lower piston push rod is connected to the open-hole pressure regulating plate 7, the force transmission tube 603 is arranged on one side of the pressure regulating box 3, and the two ends of the force transmission tube 603 are respectively connected to the upper air cylinder and the lower air cylinder for conveying the air flow between the upper air cylinder and the lower air cylinder. Through the use of the above-mentioned force transmission assembly 6, the pressure regulating box 3 can be in a sealed state, and there is no need to worry about water leakage, which ensures the safety of the back pedal machine. The piston push rod is specifically composed of a piston and a push rod, and the push rod is connected to the piston. The piston is used to control the flow of air in the cylinder, and the push rod is used to move with the movement of the piston.

[0044] The open-hole pressure regulating plate 7 is provided with a pressure relief groove, and an inner hole partition plate 14 is installed on the inner wall of the pressure relief groove. A plurality of water-passing grooves are provided on the inner hole partition plate 14. A convex cylinder is installed on the open-hole pressure regulating plate 7. The setting of the convex cylinder is used to increase the moving distance of the opening blocking piece 15 and increase the pressure regulating range of the open-hole pressure regulating plate 7. The convex cylinder is trapezoidal in shape, and both sides of the convex cylinder are openings. The convex cylinder is coaxially arranged with the pressure relief groove. An opening blocking piece 15 is provided in the convex cylinder, and one side of the opening blocking piece 15 is flush with one end of the convex cylinder. The opening blocking piece 15 is used to block the side port of the convex cylinder away from the pressure relief groove. A pressure regulating telescopic rod 16 is installed on the inner hole partition plate 14, and the telescopic axis of the pressure regulating telescopic rod 16 is connected to the opening blocking piece 15. A telescopic spring 17 is sleeved on the pressure regulating telescopic rod 16, and one end of the telescopic spring 17 The first end is connected to the opening blocking piece 15, and the other end of the telescopic spring 17 is connected to the inner hole partition plate 14. When the open hole pressure regulating plate 7 rises, the two open blocking pieces 15 are both subject to the resistance of the water flow above. The open blocking piece 15 located above moves toward the inside of the convex cylinder, and the open blocking piece 15 located below extends out of the convex cylinder. The water flow above flows downward through the pressure relief groove, reducing the resistance encountered by the open hole pressure regulating plate 7. At the same time, when the open hole pressure regulating plate 7 descends, it is affected by the buoyancy of the water flow, slowing down the descending speed of the open hole pressure regulating plate 7. By setting the opening blocking piece 15, the buoyancy encountered by the open hole pressure regulating plate 7 can be increased. In this embodiment, the convex cylinder, the inner hole partition plate 14, the pressure regulating telescopic rod 16 and the telescopic spring 17 are all set in multiple quantities and are symmetrically arranged on both sides of the open hole pressure regulating plate 7.

[0045] An external pressure relief frame 9 is installed on the pressure regulating box 3, and both sides of the external pressure relief frame 9 are connected to the pressure regulating box 3. The ports on both sides of the external pressure relief frame 9 connected to the pressure regulating box 3 are symmetrically arranged on both sides of the open-hole pressure regulating plate 7 in a static state. A directional pressure control block 8 is slidably installed on the external pressure relief frame 9, and a horizontal thrust spring 10 is installed on the external pressure relief frame 9. One end of the horizontal thrust spring 10 is connected to the directional pressure control block 8. The directional pressure control block 8 controls the flow of water above the open-hole pressure regulating plate 7 to flow back to the pressure regulating box 3 through the external pressure relief frame 9, thereby adjusting the water flow resistance of the open-hole pressure regulating plate 7, and further adjusting the force of the exerciser pushing the pedal seat 2, so that the exerciser's training pressure is adjustable. An adjusting motor 13 is installed on the external pressure relief frame 9. 9 is slidably installed with a pressure blocking strip 11, and a sliding groove is provided on the external pressure relief frame 9. The pressure blocking strip 11 passes through the sliding groove and is slidably connected to the sliding groove. The pressure blocking strip 11 is used to accurately adjust the movable range of the directional pressure control block 8. A horizontal threaded moving component 12 is provided on the external pressure relief frame 9. The horizontal threaded moving component 12 is used to connect the adjusting motor 13 and the pressure blocking strip 11, so that the adjusting motor 13 can drive the pressure blocking strip 11 to move its position when it rotates. The horizontal threaded moving component 12 consists of a threaded rod, a threaded barrel and two gears. The threaded rod is rotatably installed on the external pressure relief frame 9, and the threaded barrel is sleeved on the threaded rod. One end of the threaded barrel is connected to the pressure blocking strip 11, one of the two gears is sleeved on the threaded rod, and the other gear is sleeved on the output shaft of the adjusting motor 13, and the two gears are meshed and connected.

[0046] A fixed cylinder 18 is installed on the inverted pedal bracket 1, and a pressure transmission bag 20 is installed on the fixed cylinder 18. A transmission bag pressure pushing frame 21 is installed on the fixed cylinder 18. One end of the transmission bag pressure pushing frame 21 extends out of the fixed cylinder 18, and an arc-shaped abutment plate 22 is provided on one side of the fixed cylinder 18. The arc-shaped abutment plate 22 is connected to the transmission bag pressure pushing frame 21. A water pipe 19 is installed on the fixed cylinder 18. One end of the water pipe 19 is connected with the pressure transmission bag 20, and the other end of the water pipe 19 is connected with the pressure regulating box 3. When the water flow in the pressure regulating box 3 is squeezed, the water flow enters the pressure transmission bag 20 through the water pipe 19 and pushes the pressure transmission bag 20 to expand, pushing the transmission bag pressure pushing frame 21 to move. In this way, when the pedal seat 2 falls back, it contacts the arc-shaped abutment plate 22 and squeezes the transmission bag pressure pushing frame 21 and the pressure transmission bag 20, so that the pedal seat 2 The return speed is reduced, thereby improving the safety of the pedal seat 2. A manual valve 23 is installed on the water pipe 19. The manual valve 23 is used to control the water flow in the water pipe 19. The flow in the water pipe 19 can be controlled according to the exercise needs of the exerciser. When the manual valve 23 is opened, during the rising process of the open-hole pressure regulating plate 7, part of the water flows out of the pressure regulating box 3 through the water pipe 19, thereby reducing the water flow resistance of the open-hole pressure regulating plate 7. When the manual valve 23 is closed, the reduction of the water flow resistance of the open-hole pressure regulating plate 7 can be avoided. During the return process of the pedal seat 2, the flow of the water pipe 19 controlled by the manual valve 23 can indirectly control the return speed of the conductive bag pressure push frame 21 when it is squeezed, thereby controlling the return speed of the pedal seat 2 and improving the safety of the pedal seat 2.

[0047] Before use, first, according to the needs of exercise, an appropriate amount of water flow is delivered to the pressure regulating box 3, and then the regulating motor 13 is started according to the needs of exercise to drive the pressure blocking bar 11 to move through the horizontal thread moving component 12, thereby determining the moving range of the directional pressure control block 8, so as to prepare for the reverse leg training;

[0048] When in use, the exerciser lies on the inverted pedal machine, contacts the pedal seat 2 with both feet, and performs leg extension movements to push the pedal seat 2 up. In this process, the bow-shaped pressure connecting plate 5 is pulled up by the plate-type cable 4, and then the open-hole pressure regulating plate 7 is pushed to move in the pressure regulating box 3 through the force transmission component 6. During the movement of the open-hole pressure regulating plate 7, the water flow gives the open-hole pressure regulating plate 7 resistance, and this resistance is converted into the rising pressure of the pedal seat 2 under the action of the force transmission component 6, the bow-shaped pressure connecting plate 5 and the plate-type cable 4, thereby playing a role in training the exerciser. In the process of the open-hole pressure regulating plate 7 rising in the pressure regulating box 3, the water flow on the open-hole pressure regulating plate 7 will flow back to the bottom of the open-hole pressure regulating plate 7 along the external pressure relief frame 9. In this process, the directional pressure control block 8 controls the flow rate in the external pressure relief frame 9, thereby achieving the effect of water flow regulating the resistance of the open-hole pressure regulating plate 7, making the training pressure of the inverted pedal machine adjustable, and after the pressure reaches a certain level, the opening blocking plate The pressure regulating plate 7 is pressed down by the pressure relief groove, reducing the resistance and making the resistance of the open hole pressure regulating plate 7 within a controllable range, thereby avoiding the resistance of the open hole pressure regulating plate 7 exceeding the limit, which makes it impossible for the exerciser to push the pedal seat 2 up and cause injury to the legs, thereby ensuring the safety of the use of the reverse pedal machine.

[0049] At the same time, during the training process, the exerciser can control the water flow in the water pipe 19 through the manual valve 23. Through the flow control in the water pipe 19, the resistance given by the water flow when the open-hole pressure regulating plate 7 rises can be adjusted. Small-scale adjustments can be made according to the needs of the exerciser to make it more suitable for the needs of the exerciser. At the same time, during the falling process of the pedal seat 2, it contacts the arc-shaped abutment plate 22, and then the pedal seat 2's own gravity is applied to the pressure conduction bag 20 and the conduction bag pressure push frame 21. At this time, by controlling the flow in the water pipe 19 through controlling the manual valve 23, the falling speed of the pedal seat 2 can be controlled, which provides the exerciser with exercise safety when the exerciser is relatively tired.

[0050] The present invention also includes a method for using a muscle training back pedal machine, comprising the following steps:

[0051] S1: according to the exercise requirements, an appropriate amount of water is delivered to / output from the pressure regulating box 3;

[0052] S2: Start the adjustment motor 13 to adjust the position of the pressure blocking strip 11 and control the movable range of the directional pressure control block 8 according to the needs of the exercise;

[0053] S3: The exerciser lies on the inverted pedal machine, with both feet in contact with the pedal seat 2 and legs stretched, pushing the pedal seat 2 to move. The force transmission mechanism drives the perforated pressure regulating plate 7 to move in the pressure regulating box 3. The water flow exerts resistance on the perforated pressure regulating plate 7, which is converted into resistance to the movement of the pedal seat 2, achieving the exercise effect.

[0054] S4: The legs perform contraction movements, and the pedal seat 2 is not affected by the resistance of the perforated pressure regulating plate 7. The pedal seat 2 has its own weight to provide training for the exerciser, and the pressure is reduced, which reduces the pressure on the exerciser's knee bending. The perforated pressure regulating plate is not affected by the thrust. Under the action of gravity, it falls back to the initial state in the pressure regulating box 3, and then exercise can be carried out again.

[0055] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A muscle training back pedal machine, comprising a back pedal machine, a back pedal support (1) and a pedal seat (2) provided on the back pedal machine, the pedal seat (2) being slidably mounted on the back pedal support (1), and being used for training a person's leg muscles, characterized in that: A pressure regulating box (3) is provided on the inverted pedal bracket (1) for storing water flow, and an open-hole pressure regulating plate (7) is provided in the pressure regulating box (3), and the open-hole pressure regulating plate (7) and the pressure regulating box (3) are in a sliding connection state. A force transmission mechanism is provided on the inverted pedal bracket (1), and the force transmission mechanism is used to drive the open-hole pressure regulating plate (7) to move in the pressure regulating box (3) when the pedal seat (2) moves, and convert the resistance of the water flow encountered by the open-hole pressure regulating plate (7) during the movement into the resistance of the exerciser pushing the pedal seat (2) to move, thereby achieving the purpose of training; The force transmission mechanism is composed of a bow-shaped pressure connecting plate (5), a plate-type cable (4) and a force transmission assembly (6). The bow-shaped pressure connecting plate (5) is arranged above the pressure regulating box (3), and the bow-shaped pressure connecting plate (5) is slidably connected to the inverted pedal bracket (1). The plate-type cable (4) is arranged on the inverted pedal bracket (1). One end of the plate-type cable (4) is connected to the bow-shaped pressure connecting plate (5), and the other end of the plate-type cable (4) is connected to the pedal seat (2). When the pedal seat (2) moves, the bow-shaped pressure connecting plate (5) is pulled upward by the plate-type cable (4). The force transmission assembly (6) is arranged on the inverted pedal bracket (1), and a part of the force transmission assembly (6) extends into the pressure regulating box (3) for converting the upward force of the bow-shaped pressure connecting plate (5) into the upward force of the open-hole pressure regulating plate (7).

2. A muscle training back pedaling machine according to claim 1, characterized in that: The force transmission assembly (6) is composed of an upper force transmission member (601), a lower force transmission member (602) and a force transmission tube (603), wherein the upper force transmission member (601) is mounted on the inverted pedal bracket (1), and the lower force transmission member (602) is mounted on the pressure regulating box (3). The upper force transmission member (601) is composed of an upper air cylinder and an upper piston push rod, wherein the upper air cylinder is mounted on the inverted pedal bracket (1), and the upper piston push rod is slidably mounted on the upper air cylinder, and one end of the upper piston push rod is connected to the bow-shaped pressure connecting plate. (5) connection, the lower force transmission member (602) is composed of a lower air transmission cylinder and a lower piston push rod, the lower air transmission cylinder is installed on the pressure regulating box (3), the lower piston push rod is slidably installed on the lower air transmission cylinder, one end of the lower piston push rod is connected to the open hole pressure regulating plate (7), the force transmission tube (603) is set on one side of the pressure regulating box (3), and the two ends of the force transmission tube (603) are respectively connected to the upper air transmission cylinder and the lower air transmission cylinder, and are used to transport the air flow between the upper air transmission cylinder and the lower air transmission cylinder.

3. A muscle training back pedaling machine according to claim 2, characterized in that: A pressure relief groove is provided on the open-hole pressure regulating plate (7), an inner hole partition plate (14) is installed on the inner wall of the pressure relief groove, and a plurality of water-passing grooves are provided on the inner hole partition plate (14). A convex cylinder is installed on the open-hole pressure regulating plate (7), the convex cylinder is arranged in a trapezoidal shape, both sides of the convex cylinder are openings, the convex cylinder and the pressure relief groove are arranged coaxially, an opening blocking piece (15) is provided in the convex cylinder, one side of the opening blocking piece (15) is flush with one end of the convex cylinder, and the opening blocking piece (15) is used to block the side port of the convex cylinder away from the pressure relief groove, a pressure regulating telescopic rod (16) is installed on the inner hole partition plate (14), the telescopic shaft of the pressure regulating telescopic rod (16) is connected to the opening blocking piece (15), and a telescopic spring (17) is sleeved on the pressure regulating telescopic rod (16), one end of the telescopic spring (17) is connected to the opening blocking piece (15), and the other end of the telescopic spring (17) is connected to the inner hole partition plate (14).

4. A muscle training back pedaling machine according to claim 3, characterized in that: When the perforated pressure regulating plate (7) rises, both opening blocking pieces (15) are subject to the resistance of the water flow above. The opening blocking piece (15) located above moves toward the inside of the convex cylinder, and the opening blocking piece (15) located below extends out of the convex cylinder. The water flow above flows downward through the pressure relief groove, reducing the resistance of the perforated pressure regulating plate (7). At the same time, when the perforated pressure regulating plate (7) descends, it is subject to the buoyancy of the water flow, slowing down the descending speed of the perforated pressure regulating plate (7). By setting the opening blocking piece (15), the buoyancy of the perforated pressure regulating plate (7) can be increased.

5. A muscle training back pedaling machine according to claim 4, characterized in that: An external pressure relief frame (9) is installed on the pressure regulating box (3), and both sides of the external pressure relief frame (9) are connected to the pressure regulating box (3). The ports on both sides of the external pressure relief frame (9) connected to the pressure regulating box (3) are symmetrically arranged on both sides of the open-hole pressure regulating plate (7) in a static state. A directional pressure control block (8) is slidably installed on the external pressure relief frame (9), and a horizontal thrust spring (10) is installed on the external pressure relief frame (9). One end of the horizontal thrust spring (10) is connected to the directional pressure control block (8). The directional pressure control block (8) controls the flow of water above the open-hole pressure regulating plate (7) back to the pressure regulating box (3) through the external pressure relief frame (9), thereby adjusting the water flow resistance suffered by the open-hole pressure regulating plate (7), further adjusting the force of the exerciser pushing the pedal seat (2), and making the exerciser's training pressure adjustable.

6. A muscle training back pedaling machine according to claim 5, characterized in that: An adjusting motor (13) is installed on the external pressure relief frame (9), and a pressure blocking strip (11) is slidably installed on the external pressure relief frame (9). The pressure blocking strip (11) is used to accurately adjust the movable range of the directional pressure control block (8). A horizontal thread moving component (12) is provided on the external pressure relief frame (9). The horizontal thread moving component (12) is used to connect the adjusting motor (13) and the pressure blocking strip (11), so that the adjusting motor (13) can drive the pressure blocking strip (11) to move its position when rotating.

7. A muscle training back pedaling machine according to claim 6, characterized in that: A fixed cylinder (18) is installed on the inverted pedal bracket (1), a pressure transmission bag (20) is installed on the fixed cylinder (18), a transmission bag pressure push frame (21) is installed on the fixed cylinder (18), one end of the transmission bag pressure push frame (21) extends out of the fixed cylinder (18), an arc-shaped abutment plate (22) is provided on one side of the fixed cylinder (18), the arc-shaped abutment plate (22) is connected to the transmission bag pressure push frame (21), a water pipe (19) is installed on the fixed cylinder (18), and one end of the water pipe (19) is connected to the pressure transmission bag (20) The other end of the water conduit (19) is connected to the pressure regulating box (3). When the water flow in the pressure regulating box (3) is squeezed, the water flow enters the pressure conduction bag (20) through the water conduit (19) and pushes the pressure conduction bag (20) to expand, pushing the conduction bag pressure push frame (21) to move. In this way, when the pedal seat (2) falls back, it contacts the arc-shaped abutment plate (22) and squeezes the conduction bag pressure push frame (21) and the pressure conduction bag (20), so that the falling speed of the pedal seat (2) is reduced, thereby improving the use safety of the pedal seat (2).

8. The muscle training back pedaling machine according to claim 7, characterized in that: A manual valve (23) is installed on the water pipe (19). The manual valve (23) is used to control the water flow in the water pipe (19). The flow in the water pipe (19) can be controlled according to the exercise needs of the exerciser. When the manual valve (23) is opened, during the rising process of the open hole type pressure regulating plate (7), part of the water flows through the water pipe (19) and discharges the pressure regulating box (3), thereby reducing the water flow resistance of the open hole type pressure regulating plate (7). When the manual valve (23) is closed, the water flow resistance of the open hole type pressure regulating plate (7) can be avoided from being reduced. During the falling process of the pedal seat (2), the flow of the water pipe (19) can be controlled by the manual valve (23), which can indirectly control the falling speed of the conduction bag pressure push frame (21) when it is squeezed, and then control the falling speed of the pedal seat (2), thereby improving the use safety of the pedal seat (2).

9. The method for using the muscle training back kick machine according to claim 8, comprising the following steps: S1: according to the exercise requirements, an appropriate amount of water is delivered to / output from the pressure regulating box (3); S2: starting the regulating motor (13) to adjust the position of the pressure blocking strip (11) and controlling the movable range of the directional pressure control block (8) according to the needs of the exercise; S3: The exerciser lies on the inverted pedal machine, with both feet in contact with the pedal seat (2), and stretches his legs to push the pedal seat (2) to move, and drives the open-hole pressure regulating plate (7) to move in the pressure regulating box (3) through the force transmission mechanism. The water flow gives resistance to the open-hole pressure regulating plate (7), and the resistance is converted into movement resistance of the pedal seat (2), thereby achieving the exercise effect; S4: The legs perform a contraction movement. The pedal seat (2) is not affected by the resistance of the perforated pressure regulating plate (7). The pedal seat (2) provides the exerciser with its own weight, which reduces the pressure on the exerciser's knees. The perforated pressure regulating plate is not affected by the thrust. Under the action of gravity, it falls back to its initial state in the pressure regulating box (3), and the exerciser can continue.

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