Triceps brachii stretching exercise training device

Abstract

The invention discloses a triceps brachii stretching exercise training device, and belongs to the technical field of sports equipment, the triceps brachii stretching exercise training device comprises a bottom cylinder, two sliding grooves formed in the upper surface of the bottom cylinder and a holding rod slidably connected with the inner walls of the two sliding grooves, and two reciprocating threads are formed in the outer surface of a straight rod rotationally connected with the inner wall of the bottom cylinder. According to the device, through body fluctuation, a pull rope drives a first piston plate to move up and down in a first square cylinder under the action of body fluctuation of a trainer, so that a nut drives two holding rods to get close to each other and then get away from each other, the distance between the two hands of the trainer is automatically adjusted in the training process, and the training difficulty of the device on triceps brachii muscles is increased; the protruding block is discontinuously in contact with the piston rod, so that the piston rod moves up and down on the inner wall of the piston cylinder, water in the water tank flows into the air bag, the mass of the air bag on the back of the trainee is continuously increased, then the weight training effect on the trainee is achieved, and the effect of the device on the triceps brachii muscle of the trainee is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sports equipment, and particularly relates to a triceps extension exercise training device. Background Art

[0002] With the continuous improvement of people's living standards, fitness has become a part of many people's daily lives. As one of the important muscle groups in the upper limbs, the triceps brachii is of great significance for improving the strength, endurance and coordination of the upper limbs. Therefore, during fitness, training for the triceps brachii is essential.

[0003] The triceps brachii is an important muscle in the posterior group of the upper arm of the human body, located at the posterior side of the upper arm. Its main function is to straighten or extend the forearm, that is, when the arm changes from a bent state to a straight state, the triceps brachii contracts. Narrow-grip push-ups are an exercise specifically for the triceps brachii, the inner part of the chest muscles and the anterior deltoids. The distance between the hands in narrow-grip push-ups has an important impact on the training effect. By adjusting the distance between the hands, different muscle groups can be exercised. Existing narrow-grip push-up devices are difficult to automatically adjust the difficulty, and the trainer needs to interrupt the training for adjustment. For the triceps brachii exercise that requires continuous training, the training effect of the device is not good. Summary of the Invention

[0004] The purpose of the present invention is to propose a triceps extension exercise training device to solve the problem that existing narrow-grip push-up devices are difficult to automatically adjust the difficulty, resulting in poor training effects of the devices.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A triceps extension exercise training device includes a bottom cylinder, two chutes opened on the upper surface of the bottom cylinder, and a grip rod slidably connected to the inner walls of the two chutes. The outer surface of a straight rod rotatably connected to the inner wall of the bottom cylinder is provided with two reciprocating threads. The two grip rods are threadedly connected to the outer surface of the reciprocating threads through nuts. The inner walls of two first square cylinders fixedly connected to the upper surface of the bottom cylinder are both slidably connected with first piston plates. The two first piston plates are fixedly connected to a back strap arranged above the bottom cylinder through pull ropes. A toothed ring is fixedly connected to the outer surface of the straight rod through a one-way bearing. The toothed belts fixedly connected to the bottom ends of the two first piston plates are respectively hinged to a toothed ring. The inner wall of a piston cylinder fixedly connected to the inner bottom wall of the bottom cylinder is slidably connected with a piston rod. The upper end of the piston rod extends into the bottom cylinder and is slidably connected with a set of raised blocks fixedly connected to the outer surface of the straight rod. The piston cylinder is communicated with an airbag embedded in the bottom surface of the back strap through a telescopic tube, and the piston cylinder is fixedly connected to a water tank arranged outside the bottom cylinder through a first one-way valve. A set of compression springs is fixedly connected to the bottom surface of the piston cylinder.

[0007] As a further description of the above technical solution:

[0008] The upper end of the compression spring is fixedly connected to the bottom surface of the piston rod. A second one-way valve is provided at the fixed communication position between the telescopic tube and the piston cylinder. The liquid inlet end of the second one-way valve is communicated with the inside of the piston cylinder, and the liquid outlet end of the second one-way valve is communicated with the airbag.

[0009] As a further description of the above technical solution:

[0010] The water tank is fixedly connected to the left side surface of the bottom cylinder, and an observation window is provided on the outer surface of the water tank. The liquid inlet end of the first one-way valve is communicated with the inside of the water tank, and the liquid outlet end of the first one-way valve is communicated with the inside of the piston cylinder.

[0011] As a further description of the above technical solution:

[0012] A second piston plate is slidably connected to the inner walls of a pair of second square tubes fixedly connected to the upper surface of the bottom cylinder. One ends of the two toothed belts away from the first piston plate are fixedly connected to the bottom surface of the second piston plate.

[0013] As a further description of the above technical solution:

[0014] The telescopic spring fixedly connected to the bottom surface of the second piston plate is fixedly connected to the inner bottom wall of the second square tube. The toothed belt does not contact the through position of the second square tube. The inner ring of the one-way bearing is fixedly connected to the outer surface of the straight rod, and the outer ring of the one-way bearing is fixedly connected to the toothed ring.

[0015] As a further description of the above technical solution:

[0016] A bracket is fixedly connected to the upper surface of the first square tube. A roller is rotatably connected to the outer surface of the bracket. The return spring fixedly connected to the upper surface of the first piston plate is fixedly connected to the inner top wall of the first square tube. The pull rope passes through the return spring and the first square tube and contacts the outer surface of the roller.

[0017] As a further description of the above technical solution:

[0018] A pair of rubber bands are fixedly connected to the bottom surface of the back strap. The bottom ends of the two rubber bands are fixedly connected with magic tapes, and the two magic tapes are adapted to each other.

[0019] As a further description of the above technical solution:

[0020] A threaded rubber plug is threadedly connected to the outer surface of the airbag, and the airbag is located directly above the bottom cylinder. Rubber layers are fixedly connected to the outer surfaces of the two grip rods.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] In the present invention, by positioning the airbag on the back of the trainer, the trainer holds the grip rod and does narrow-grip push-ups. During the process of the body rising and falling, the pull rope drives the first piston plate to move up and down inside the first square tube under the action of the body rising and falling of the trainer. The first piston plate drives the toothed belt to move, so that the toothed ring drives the one-way bearing and the straight rod to rotate. Furthermore, the nut drives the two grip rods to approach and then move away from each other, so that the distance between the two hands of the trainer is automatically adjusted during the training process, increasing the training difficulty of the device for the triceps brachii. At the same time, the raised block intermittently contacts the piston rod, so that the piston rod moves up and down on the inner wall of the piston cylinder, so that the water in the water tank flows into the inside of the airbag, so that the mass of the airbag on the back of the trainer continuously increases, thereby playing a role in weight-bearing training for the trainer and further increasing the effect of the device on the triceps brachii of the trainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a front sectional structure schematic diagram of a triceps brachii stretching exercise training device proposed by the present invention;

[0024] Figure 2 is a front structure schematic diagram of a triceps brachii stretching exercise training device proposed by the present invention;

[0025] Figure 3 is a top structure schematic diagram of a triceps brachii stretching exercise training device proposed by the present invention;

[0026] Figure 4 is a left sectional structure schematic diagram of the first square tube of a triceps brachii stretching exercise training device proposed by the present invention;

[0027] Figure 5 is a left sectional structure schematic diagram of the piston cylinder of a triceps brachii stretching exercise training device proposed by the present invention;

[0028] Figure 6 is a triceps brachii stretching exercise training device proposed by the present invention Figure 1 Schematic diagram of the enlarged structure at A in

[0029] Legend: 1. Bottom cylinder; 2. Slide groove; 3. Grip bar; 4. Straight bar; 5. Reciprocating thread; 6. Nut; 7. First square cylinder; 8. First piston plate; 9. Pull rope; 10. Shoulder strap; 11. One-way bearing; 12. Tooth ring; 13. Tooth belt; 14. Piston cylinder; 15. Piston rod; 16. Protruding block; 17. Telescopic tube; 18. Airbag; 19. First one-way valve; 20. Water tank; 21. Compression spring; 22. Second one-way valve; 23. Observation window; 24. Second square cylinder; 25. Second piston plate; 26. Telescopic spring; 27. Bracket; 28. Drum; 29. Return spring; 30. Rubber band; 31. Velcro; 32. Threaded rubber plug; 33. Rubber layer. Detailed implementation

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-6, the present invention provides a technical solution: a triceps extension exercise training device, including a bottom cylinder 1, two chutes 2 opened on the upper surface of the bottom cylinder 1, and a grip rod 3 slidably connected to the inner walls of the two chutes 2. Rubber layers 33 are fixedly connected to the outer surfaces of the two grip rods 3. The rubber layers 33 increase the friction on the outer surface of the grip rod 3, facilitating the trainer to grasp. A straight rod 4 rotatably connected to the inner wall of the bottom cylinder 1 has two reciprocating threads 5 on its outer surface. The two grip rods 3 are threadedly connected to the outer surface of the reciprocating threads 5 through nuts 6, that is, the grip rod 3 is fixedly connected to the outer surface of the nut 6, and the nut 6 is threadedly connected to the reciprocating threads 5. Two first square cylinders 7 fixedly connected to the upper surface of the bottom cylinder 1 have first piston plates 8 slidably connected to their inner walls. The two first piston plates 8 are fixedly connected to a back strap 10 arranged above the bottom cylinder 1 through a pull rope 9. One end of the pull rope 9 is fixedly connected to the first piston plate 8, and the other end of the pull rope 9 is fixedly connected to the outer surface of the back strap 10. A pair of rubber bands 30 are fixedly connected to the bottom surface of the back strap 10. The bottom ends of the two rubber bands 30 are fixedly connected with magic tapes 31. The magic tape 31 consists of two sides. One side is soft and fine fibers, called round hair, and the other side is harder hook-like hair. When the two sides are attached, the hook-like structure will catch the fibers and form a firm bond; while with a gentle pull, they can be easily separated. The two magic tapes 31 are adapted to each other, that is, the two magic tapes 31 can be adhered to each other. The cooperation of the rubber bands 30 and the magic tapes 31 has a limiting effect on the trainer. A bracket 27 is fixedly connected to the upper surface of the first square cylinder 7. A roller 28 is rotatably connected to the outer surface of the bracket 27. The cooperation of the bracket 27 and the roller 28 has a limiting and guiding effect on the pull rope 9, preventing the movement of the pull rope 9 from rubbing against the outer surface of the first square cylinder 7. A return spring 29 fixedly connected to the upper surface of the first piston plate 8 is fixedly connected to the inner top wall of the first square cylinder 7. Figure 6 The return spring 29 in it is in a natural state. The return spring 29 plays a role in resetting the first piston plate 8. The pull rope 9 passes through the return spring 29 and the first square cylinder 7 and contacts the outer surface of the roller 28.

[0032] A toothed ring 12 is fixedly connected to the outer surface of the straight rod 4 through a one-way bearing 11. The one-way bearing 11, also known as a check bearing, a clutch bearing or an overrunning clutch, is a bearing that only allows the shaft to rotate in one direction. The one-way bearing 11 utilizes the cooperation of internal rolling elements and a wedge-shaped groove to achieve one-way transmission. When the shaft rotates in the allowed direction, the rolling elements roll freely in the wedge-shaped groove, and the shaft and the inner ring rotate together while the outer ring remains stationary. When the shaft attempts to rotate in the opposite direction, the rolling elements are forced to move to the narrow part of the wedge-shaped groove, forming a locking state to prevent the relative rotation of the inner ring and the shaft. The inner ring of the one-way bearing 11 is fixedly connected to the outer surface of the straight rod 4, and the outer ring of the one-way bearing 11 is fixedly connected to the inner wall of the toothed ring 12. The toothed belts 13 fixedly connected to the bottom ends of the two first piston plates 8 are respectively hinged to a toothed ring 12. Second piston plates 25 are slidably connected to the inner walls of a pair of second square cylinders 24 fixedly connected to the upper surface of the bottom cylinder 1. One ends of the two toothed belts 13 far from the first piston plates 8 are fixedly connected to the bottom surface of the second piston plates 25. The toothed belts 13 do not contact the through parts of the second square cylinders 24 and the bottom cylinder 1 to prevent friction between the toothed belts 13 and the through parts of the second square cylinders 24 and the bottom cylinder 1. A telescopic spring 26 fixedly connected to the bottom surface of the second piston plate 25 is fixedly connected to the inner bottom wall of the second square cylinder 24. The setting of the telescopic spring 26 plays a role in resetting the second piston plate 25. Figure 4 The telescopic spring 26 in Figure 4 is in a natural state, and the cooperation setting of the second square cylinder 24, the second piston plate 25 and the telescopic spring 26 drives the toothed belt 13 to reset.

[0033] A piston rod 15 is slidably connected to the inner wall of a piston cylinder 14 fixedly connected to the inner bottom wall of the bottom cylinder 1. The upper end of the piston rod 15 extends into the bottom cylinder 1 and is slidably connected to a set of raised blocks 16 fixedly connected to the outer surface of the straight rod 4. The piston rod 15 is slidably connected to the through part of the bottom cylinder 1. The piston cylinder 14 is communicated with an airbag 18 inlaid on the bottom surface of the back strap 10 through a telescopic tube 17, and the piston cylinder 14 is fixedly communicated with a water tank 20 arranged outside the bottom cylinder 1 through a first one-way valve 19. One end of the telescopic tube 17 is fixedly communicated with the piston cylinder 14, and the other end of the telescopic tube 17 is communicated with the airbag 18. A threaded rubber plug 32 is threadedly connected to the outer surface of the airbag 18, and the airbag 18 is located directly above the bottom cylinder 1. The threaded rubber plug 32 usually consists of a rubber main body and a threaded part. The rubber main body part has good elasticity and sealing performance, while the threaded part is used to connect with the corresponding threaded hole or pipeline. This design enables the threaded rubber plug 32 to be tightly fixed in the required position and provides an effective sealing effect at the same time. The main body part of the threaded rubber plug 32 is usually made of high-quality rubber materials such as nitrile rubber, silicone rubber, fluororubber, etc. These materials have excellent properties such as oil resistance, water resistance, acid and alkali resistance, high temperature resistance and low temperature resistance, and can meet the requirements of different working environments. By detaching the threaded rubber plug 32 from the airbag 18, the water inside the airbag 18 can be led out to decompress and reset the airbag 18.

[0034] The water tank 20 is fixedly connected to the left side surface of the bottom cylinder 1, and an observation window 23 is arranged on the outer surface of the water tank 20. The arrangement of the observation window 23 facilitates observing the remaining amount of water inside the water tank 20. A second one-way valve 22 is arranged at the fixed connection between the telescopic pipe 17 and the piston cylinder 14. The liquid inlet end of the second one-way valve 22 is communicated with the inside of the piston cylinder 14, and the liquid outlet end of the second one-way valve 22 is communicated with the airbag 18. The liquid inlet end of the first one-way valve 19 is communicated with the inside of the water tank 20, and the liquid outlet end of the first one-way valve 19 is communicated with the inside of the piston cylinder 14, ensuring the flow direction of the water inside the piston cylinder 14. That is, when the piston rod 15 moves up and down inside the piston cylinder 14, the water inside the water tank 20 flows through the first one-way valve 19, the piston cylinder 14, the second one-way valve 22 and the telescopic pipe 17 into the inside of the airbag 18. A set of compression springs 21 are fixedly connected to the bottom surface of the piston cylinder 14. Figure 5 The compression spring 21 in [description] is in a compressed state. The upper end of the compression spring 21 is fixedly connected to the bottom surface of the piston rod 15, and the compression spring 21 plays a role in resetting the piston rod 15.

[0035] Appropriately add water into the water tank 20. The trainer winds the rubber band 30 around the chest, and by the way that the two magic tapes 31 adhere to each other, the airbag 18 is limited to the back of the trainer. The trainer holds the grip 3 and does narrow-grip push-ups. During the process of the body rising and falling, under the setting of the return spring 29, the pull rope 9 drives the first piston plate 8 to move up and down inside the first square cylinder 7 under the action of the body rising and falling of the trainer. The first piston plate 8 drives the toothed belt 13 to move, so that the toothed ring 12 meshing with the toothed belt 13 drives the one-way bearing 11 and the straight rod 4 to rotate. Furthermore, the nut 6 threadedly connected to the outer surface of the reciprocating thread 5 drives the two grips 3 to approach each other and then move away from each other, so that the distance between the two hands of the trainer is automatically adjusted during the training process, increasing the training difficulty of the triceps brachii of the device. At the same time, the convex block 16 intermittently contacts the piston rod 15, and under the cooperative setting of the compression spring 21, the piston rod 15 moves up and down on the inner wall of the piston cylinder 14, so that the water in the water tank 20 flows through the first one-way valve 19, the piston cylinder 14, the second one-way valve 22 and the telescopic pipe 17 into the inside of the airbag 18, making the mass of the airbag 18 on the back of the trainer continuously increase, thereby playing a role in weight-bearing training for the trainer and further increasing the effect of the device on the triceps brachii of the trainer.

[0036] Working principle: When in use, the trainer wraps the rubber band 30 around the chest, and the two magic tapes 31 are adhered to each other, so that the airbag 18 is limited to the back of the trainer. The trainer holds the grip rod 3 and does narrow-grip push-ups. During the process of the body rising and falling, the pull rope 9 drives the first piston plate 8 to move up and down inside the first square tube 7 under the action of the body rising and falling of the trainer. The first piston plate 8 drives the toothed belt 13 to move, so that the toothed ring 12 drives the one-way bearing 11 and the straight rod 4 to rotate. Furthermore, the nut 6 drives the two grip rods 3 to approach and then move away from each other, so that the distance between the two hands of the trainer is automatically adjusted during the training process, increasing the training difficulty of the device for the triceps brachii. At the same time, the convex block 16 intermittently contacts the piston rod 15, so that the piston rod 15 moves up and down on the inner wall of the piston cylinder 14, so that the water in the water tank 20 flows into the inside of the airbag 18, so that the mass of the airbag 18 on the back of the trainer continuously increases, and thus plays a role in weight-bearing training for the trainer, further increasing the effect of the device on the triceps brachii of the trainer.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A triceps stretching exercise training device, comprising a bottom tube (1), two slide grooves (2) provided on the upper surface of the bottom tube (1), and a gripping rod (3) slidably connected to the inner walls of the two slide grooves (2), characterized in that: The outer surface of the straight rod (4) rotatably connected to the inner wall of the bottom tube (1) is provided with two reciprocating threads (5); the two gripping rods (3) are threadedly connected to the outer surface of the reciprocating threads (5) through nuts (6); the inner walls of the two first square tubes (7) fixedly connected to the upper surface of the bottom tube (1) are both slidably connected to the first piston plates (8); the two first piston plates (8) are fixedly connected to the shoulder strap (10) arranged above the bottom tube (1) through a pull rope (9); the outer surface of the straight rod (4) is fixedly connected to a toothed ring (12) through a one-way bearing (11); the toothed belts (13) fixedly connected to the bottom ends of the two first piston plates (8) are ) are respectively hinged to a gear ring (12); the inner wall of the piston cylinder (14) fixedly connected to the inner bottom wall of the bottom cylinder (1) is slidably connected to a piston rod (15); the upper end of the piston rod (15) extends into the interior of the bottom cylinder (1) and is slidably connected to a group of protrusions (16) fixedly connected to the outer surface of the straight rod (4); the piston cylinder (14) is connected to an air bag (18) embedded in the bottom surface of the shoulder strap (10) through a telescopic tube (17); the piston cylinder (14) is fixedly connected to a water tank (20) arranged outside the bottom cylinder (1) through a first one-way valve (19); and the bottom surface of the piston cylinder (14) is fixedly connected to a group of compression springs (21).

2. A triceps stretching exercise training device according to claim 1, characterized in that: The upper end of the compression spring (21) is fixedly connected to the bottom surface of the piston rod (15), and a second one-way valve (22) is provided at the fixed connection point between the telescopic tube (17) and the piston cylinder (14). The liquid inlet end of the second one-way valve (22) is connected to the interior of the piston cylinder (14), and the liquid outlet end of the second one-way valve (22) is connected to the air bag (18).

3. A triceps stretching exercise training device according to claim 1, characterized in that: The water tank (20) is fixedly connected to the left side surface of the bottom cylinder (1), and an observation window (23) is provided on the outer surface of the water tank (20); the liquid inlet end of the first one-way valve (19) is connected to the interior of the water tank (20), and the liquid outlet end of the first one-way valve (19) is connected to the interior of the piston cylinder (14).

4. A triceps stretching exercise training device according to claim 1, characterized in that: The inner walls of a pair of second square cylinders (24) fixedly connected to the upper surface of the bottom cylinder (1) are both slidably connected to a second piston plate (25), and the ends of the two toothed belts (13) away from the first piston plate (8) are both fixedly connected to the bottom surface of the second piston plate (25).

5. A triceps stretching exercise training device according to claim 4, characterized in that: The telescopic spring (26) fixedly connected to the bottom surface of the second piston plate (25) is fixedly connected to the inner bottom wall of the second square tube (24), the toothed belt (13) does not contact the penetration point of the second square tube (24), the inner ring of the one-way bearing (11) is fixedly connected to the outer surface of the straight rod (4), and the outer ring of the one-way bearing (11) is fixedly connected to the gear ring (12).

6. A triceps stretching exercise training device according to claim 1, characterized in that: A bracket (27) is fixedly connected to the upper surface of the first square cylinder (7), and a roller (28) is rotatably connected to the outer surface of the bracket (27). A return spring (29) fixedly connected to the upper surface of the first piston plate (8) is fixedly connected to the inner top wall of the first square cylinder (7), and the pull rope (9) passes through the return spring (29) and the first square cylinder (7) and contacts the outer surface of the roller (28).

7. The triceps stretching exercise training device according to claim 1, characterized in that: A pair of rubber bands (30) are fixedly connected to the bottom surface of the shoulder strap (10), and the bottom ends of the two rubber bands (30) are fixedly connected to Velcro (31), and the two Velcro (31) are adapted to each other.

8. The triceps stretching exercise training device according to claim 1, characterized in that: The outer surface of the airbag (18) is threadedly connected to a threaded rubber plug (32), and the airbag (18) is located directly above the bottom tube (1). The outer surfaces of the two grip rods (3) are fixedly connected to a rubber layer (33).

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