Back muscle training device for physical exercise

Abstract

The utility model relates to the technical field of exercise equipment, and particularly discloses a back muscle training device for physical exercise, which comprises a seat and a backrest, the backrest is rotatably connected with the seat, and the seat is arranged on a base; a resistance adjusting rod is arranged on the side, away from the seat, of the backrest, the tail end of the resistance adjusting rod is connected with a piston, and the piston is located in the sealing tank. When the buffer solution storage device is used, the pressure pump is started to feed air on the outer side into the pressure cavity or pump the air out of the pressure cavity to increase or reduce the air pressure in the pressure cavity, so that the height adjusting plate moves upwards or downwards, and the pressure intensity of the cavity for storing the buffer solution on the upper layer of the sealing tank is adjusted; the higher the pressure intensity is, the poorer the flowability of the buffer solution is, and the higher the resistance when the backrest moves downwards is, so that the resistance when the backrest moves downwards can be adjusted according to needs, and the requirements of different people or the same person for training in different stages are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of exercise equipment, and particularly relates to a back muscle training device for physical exercise. BACKGROUND

[0002] Sit-ups mainly exercise abdominal muscles, especially rectus abdominis, and can also effectively exercise lumbar muscles, and help reduce waist fat and make the waist healthier.

[0003] However, in the process of physical exercise, different personnel have different physical qualities, and the required force is also different in the training process of back muscles. Even if a single person trains, the required resistance in the training process is also different as the training progresses improves. Therefore, the application provides a back muscle training device for physical exercise, which can adjust the resistance received in the sit-up process according to requirements to adapt to the training requirements of different people or different stages of the same person. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a back muscle training device for physical exercise to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme, a back muscle training device for physical exercise, including seat, backrest, the backrest is rotatably connected with the seat, the seat is arranged on the base;

[0006] The side, away from the seat, of the backrest is provided with a resistance adjusting rod, the resistance adjusting rod is connected with a piston at the tail end, the piston is located in the inside of a sealed tank, the resistance adjusting rod and the sealed tank can slide up and down relative to each other, a plurality of flow-through holes are arranged in the inside of the piston, and the sealed tank is filled with a buffer solution.

[0007] The inside bottom of the sealed tank is provided with a height adjusting plate that can move along the inner wall of the sealed tank, the height adjusting plate and the inner wall of the bottom of the sealed tank surround a pressurizing cavity, and the pressurizing cavity is communicated with a pressurizing pump.

[0008] Preferably, the side, close to the backrest, of the base is provided with a support, two steel pipes are rotatably connected at the two sides of the support, handrails are installed on the steel pipes, and the two handrails on the two steel pipes are located at the two sides of the seat respectively.

[0009] Preferably, the flow-through holes are arranged in a narrow-mouth shape at the positions of the two end faces of the piston, and the plurality of flow-through holes are distributed in a circumferential array around the center line of the piston.

[0010] Preferably, the resistance adjusting rod penetrates through a sealing element, the sealing element is installed at the top of the sealed tank, a sealing groove is arranged in the inside of the sealing element, a sealing ring is clamped in the sealing groove, and the sealing ring is sleeved on the outside of the resistance adjusting rod.

[0011] Preferably, a pressure relief valve is mounted on the top of the sealed tank, and the pressure relief valve is communicated with the receiving box.

[0012] Preferably, a square rod is mounted on the side of the backrest away from the seat, the square rod is inserted into the resistance pipe and is slidably connected with the resistance pipe, the square rod is inserted into the connecting sleeve, and the connecting sleeve is embedded into the top of the resistance pipe.

[0013] Preferably, a spring is connected to the end of the square rod, the spring is arranged in the resistance pipe, the resistance pipe is mounted on a square frame, the square frame is connected with the support, and a plurality of transverse plates are arranged in the square frame in parallel.

[0014] Compared with the prior art, the back muscle training device has the following beneficial effects:

[0015] The sealed tank is filled with a buffer solution, the aperture of the flow-through hole is small, and the buffer solution has poor flowability, so in the process of back muscle training, the backrest is driven to rotate downward by the back muscles, the resistance adjusting rod connected with the backrest moves downward together, the resistance adjusting rod is hindered by the buffer solution in the moving process, the buffer solution slowly flows to the other side through the flow-through hole, resistance is provided for the movement of the backrest, the purpose of exercising back muscles is achieved, the pressurizing pump is started to send air outside into the pressurizing cavity or to draw air out of the pressurizing cavity, the air pressure in the pressurizing cavity is increased or reduced, the height adjusting plate moves upward or downward, the pressure of the cavity storing the buffer solution on the sealed tank is adjusted, the flowability of the buffer solution in the cavity on the upper side of the sealed tank is adjusted, the greater the pressure is, the poorer the flowability of the buffer solution is, and the greater the resistance of the backrest in the moving process is, so the resistance of the backrest in the moving process can be adjusted as required, and the training needs of different people or the same person at different stages can be met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic view of a back muscle training device for physical exercise in the utility model.

[0017] Figure 2 FIG. 2 is another structural schematic view of the back muscle training device for physical exercise in the utility model.

[0018] Figure 3 FIG. 3 is a structural schematic view of a sealed tank in the utility model.

[0019] Figure 4 FIG. 4 is a structural schematic view of a resistance pipe in the utility model.

[0020] In the drawing: 1, seat; 2, backrest; 3, base; 4, armrest; 5, support; 6, resistance adjusting rod; 7, piston; 701, flow-through hole; 8, sealed tank; 9, pressure relief valve; 10, sealing element; 11, height adjusting plate; 12, pressurizing cavity; 13, pressurizing pump; 14, resistance pipe; 15, square rod; 16, connecting sleeve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Referring to Figures 1-4 A back muscle training device for physical exercise, comprising a seat 1, a backrest 2, the backrest 2 is rotatably connected with the seat 1, the seat 1 is arranged on a base 3, a support 5 is arranged on the side close to the backrest 2 of the base 3, two steel pipes are rotatably connected on the two sides of the support 5, handrails 4 are arranged on the steel pipes, and the two handrails 4 on the two steel pipes are respectively arranged on the two sides of the seat 1.

[0023] Referring to Figure 1 , Figure 2 The two handrails 4 on the seat 1 are rotatable relative to the support 5, so that the angle of the handrails 4 can be adjusted according to needs, the handrails 4 are lifted to prevent the handrails 4 from blocking the sides of the seat 1, and when getting on or off the seat 1, the seat 1 can be accessed from the side, so that the getting on and off is more convenient.

[0024] During the back muscle training process, the resistance needs to be adjusted according to needs, therefore, a resistance adjusting rod 6 is arranged on the side away from the seat 1 of the backrest 2, the resistance adjusting rod 6 is connected with a piston 7 at the end, the piston 7 is arranged in a sealed tank 8, the resistance adjusting rod 6 and the sealed tank 8 are slidably arranged relative to each other, a plurality of flow-through holes 701 are arranged in the piston 7, the flow-through holes 701 are arranged in a narrow-mouth shape corresponding to the positions of the two end faces of the piston 7, that is, the flow-through holes 701 are narrow on both sides and wide in the middle, and the plurality of flow-through holes 701 are circumferentially arranged around the center line of the piston 7.

[0025] Specifically, the sealed tank 8 is filled with a buffer solution, because the flow-through holes 701 have small diameters and the buffer solution has poor flowability, during the back muscle training process, the backrest 2 is driven to rotate downward by the muscles of the back, the resistance adjusting rod 6 connected with the backrest 2 moves downward together, the resistance adjusting rod 6 is hindered by the buffer solution during the downward movement, the buffer solution slowly flows to the other side through the flow-through holes 701, the movement of the backrest 2 is resisted, and the purpose of training the back muscles is achieved.

[0026] The backrest 2 itself has a tendency to return to the original position, and can slowly lift after moving downward, that is, when the back muscles do not exert pressure on the backrest 2 to move downward, the backrest 2 slowly lifts, and the tendency to return to the original position also serves as resistance when the backrest 2 moves downward.

[0027] More specifically, the resistance adjusting rod 6 passes through the sealing member 10, the sealing member 10 is installed on the top of the sealed tank 8, and a sealing groove is arranged inside the sealing member 10, a sealing ring is clamped in the sealing groove, the sealing ring is sleeved on the outside of the resistance adjusting rod 6, and the sealing member 10 can guide the movement of the resistance adjusting rod 6, and the sealing member 10 can seal the sliding connection between the resistance adjusting rod 6 and the sealing member 10, so as to avoid the buffer solution from flowing out from the position.

[0028] In order to adjust the resistance received by the backrest 2 during the falling process, a height adjusting plate 11 that can move along the inner wall of the sealed tank 8 is arranged at the bottom of the inside of the sealed tank 8, the height adjusting plate 11 surrounds the inner wall at the bottom of the sealed tank 8 to form a pressurizing cavity 12, the pressurizing cavity 12 is communicated with a pressurizing pump 13, the pressurizing pump 13 can send air outside into the pressurizing cavity 12 or exhaust air from the pressurizing cavity 12, so as to increase or decrease the air pressure inside the pressurizing cavity 12, so that the height adjusting plate 11 moves upward or downward, thereby adjusting the pressure of the cavity storing the buffer solution on the upper side of the sealed tank 8, adjusting the fluidity of the buffer solution inside the cavity on the upper side of the sealed tank 8, and adjusting the resistance when the backrest 2 moves downward.

[0029] In order to avoid excessive pressure in the upper area of the sealed tank 8, a pressure relief valve 9 is installed on the top of the sealed tank 8, the pressure relief valve 9 is communicated with a storage box, and the pressure relief valve 9 is used to discharge part of the buffer solution after the pressure on the upper side of the sealed tank 8 exceeds a limited value, so as to control the pressure inside the sealed tank 8 to be below a set value, and the storage box is used to store the buffer solution discharged from the pressure relief valve 9.

[0030] In a further embodiment, a square rod 15 is installed on the side of the backrest 2 away from the seat 1, the square rod 15 is inserted into the resistance pipe 14 and is in sliding connection with the resistance pipe 14, the square rod 15 is inserted into a connecting sleeve 16, the connecting sleeve 16 is embedded into the top of the resistance pipe 14, the square rod 15 is connected with a spring at the end, the spring is received into the resistance pipe 14, the resistance pipe 14 is installed on a square frame, the square frame is connected with the support 5, and a plurality of transverse plates are arranged inside the square frame.

[0031] During the process of moving the backrest 2 downward, the square rod 15 moves downward together, and the spring is compressed during the process, and the compressed spring can provide resistance for back muscle exercise, and even if the buffer solution in the sealed tank 8 is discharged, the training of the back muscles with a smaller degree can also be carried out.

[0032] Working principle:

[0033] The sealed tank 8 is filled with buffer solution, because the aperture of the flow-through hole 701 is small, and the buffer solution itself has poor flowability, therefore in the process of back muscle training, the backrest 2 is pushed downward by the back muscles, and the resistance adjusting rod 6 connected with the backrest 2 moves downward together, in the process of moving downward, the resistance adjusting rod 6 is hindered by the buffer solution, the buffer solution slowly flows to the other side through the flow-through hole 701, the movement of the backrest 2 can be provided with resistance, and the purpose of exercising back muscles is achieved.

[0034] The starting pressurizing pump 13 can send air outside into the pressurizing cavity 12 or extract air from the pressurizing cavity 12, increase or decrease the air pressure inside the pressurizing cavity 12, make the height adjusting plate 11 move upward or downward, thereby adjusting the pressure of the cavity of the sealed tank 8 storing buffer solution on the upper layer, thereby adjusting the flowability of the buffer solution inside the cavity on the upper side of the sealed tank 8, the greater the pressure is, the poorer the flowability of the buffer solution is, and the greater the resistance of the backrest 2 moving downward is, so the resistance of the backrest 2 moving downward can be adjusted according to the requirement.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A back muscle training device for physical exercise, comprising a seat (1), a backrest (2), characterized in that, The backrest (2) is rotatably connected with the seat (1), and the seat (1) is arranged on the base (3); The backrest (2) is provided with a resistance adjusting rod (6) on the side away from the seat (1), the resistance adjusting rod (6) is connected with a piston (7) at the end, the piston (7) is located in the inside of a sealed tank (8), the resistance adjusting rod (6) and the sealed tank (8) can slide up and down, the piston (7) is provided with a plurality of flow holes (701) in the inside, and the sealed tank (8) is filled with a buffer solution; The inside bottom of the sealed tank (8) is provided with a height adjusting plate (11) which can move along the inner wall of the sealed tank (8), the height adjusting plate (11) and the inner wall of the bottom of the sealed tank (8) surround a pressurizing cavity (12), and the pressurizing cavity (12) is communicated with a pressurizing pump (13).

2. The back muscle training device for physical exercise according to claim 1, wherein The base (3) is provided with a support (5) on the side close to the backrest (2), two steel pipes are rotatably connected on the two sides of the support (5), and handrails (4) are installed on the steel pipes, and the two handrails (4) on the two steel pipes are located on the two sides of the seat (1) respectively.

3. The back muscle training device for physical exercise according to claim 1, wherein The flow holes (701) are provided in the shape of narrow mouths at the positions of the two end faces of the piston (7), and a plurality of flow holes (701) are distributed in a circumferential array around the center line of the piston (7).

4. The back muscle training device for physical exercise according to claim 1, wherein The resistance adjusting rod (6) penetrates through a sealing element (10), the sealing element (10) is installed on the top of the sealed tank (8), a sealing groove is arranged in the inside of the sealing element (10), a sealing ring is clamped in the sealing groove, and the sealing ring is sleeved on the outside of the resistance adjusting rod (6).

5. The back muscle training device for physical exercise according to claim 1, wherein A pressure relief valve (9) is installed on the top of the sealed tank (8), and the pressure relief valve (9) is communicated with a receiving box.

6. The back muscle training device for physical exercise according to claim 1, wherein A square rod (15) is installed on the side of the backrest (2) away from the seat (1), the square rod (15) is inserted into a resistance pipe (14) and is slidably connected with the resistance pipe (14), the square rod (15) is inserted into a connecting sleeve (16), and the connecting sleeve (16) is embedded into the top of the resistance pipe (14).

7. The back muscle training device for physical exercise according to claim 6, wherein A spring is connected with the end of the square rod (15), the spring is received into the inside of the resistance pipe (14), the resistance pipe (14) is installed on a square frame, the square frame is connected with the support (5), and a plurality of transverse plates are arranged in parallel in the inside of the square frame.

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