Fitness equipment for back stretching exercise

Abstract

The invention discloses fitness equipment for back stretching exercise, and belongs to the technical field of fitness equipment, the fitness equipment comprises a bottom plate and an ABS plate arranged on the upper portion of the bottom plate, a cavity is formed in the bottom plate, a pair of sliding grooves are formed in the upper surface of the bottom plate, and U-shaped sliding blocks are slidably connected to the inner walls of the two sliding grooves; the two ends of the ABS plate are hinged to the upper surfaces of the U-shaped sliding blocks. According to the bridge type back stretching exercise device, the moving distances of two racks are always the same through cooperative arrangement of gears, the waist of a lying straight body is located at the center line of the upper surface of an ABS plate, the phenomenon that the waist inclines towards one side in the bridge type back stretching exercise process is relieved, and a motor works to drive a U-shaped sliding block to drive a piston rod to reciprocate left and right on the inner wall of a first piston barrel; air in the rubber air bag is increased and the rubber air bag is continuously expanded to drive the two sides of the waist of the stretched trainer to get close to the middle of the ABS plate, and the phenomenon that the back of the trainer inclines towards one side during stretching training is relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of fitness equipment, and in particular relates to fitness equipment for back stretching exercises. Background Art

[0002] As people's pursuit of health and body beauty increases, back exercises have become an important part of fitness. Back muscles not only affect the overall beauty of the body, but are also closely related to the health of the spine. Back stretching exercises include cat-cow pose, baby pose, downward dog pose and bridge pose. By persisting in back stretching exercises, you can effectively enhance the strength and flexibility of the back muscles, relieve back pain, and improve posture. At the same time, these exercise methods also help to improve the body's overall coordination and balance.

[0003] The bridge pose is a common method of back extension exercise. The practitioner lies on his back with his knees bent and his feet flat on the floor. When inhaling, the buttocks are lifted off the floor and the body is supported by the feet and hands. When exhaling, the buttocks are lowered and the body is returned to the starting position. The exercise is repeated. However, the body is prone to tilt to one side during the bridge pose. This is because when the body is lifted, the waist position shifts to one side, or the legs are not parallel and the body position is not located on the midline between the legs. This causes imbalance when the buttocks are lifted, which in turn causes the back to tilt. Existing back exercise equipment is difficult to slow down this phenomenon. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the existing back exercise equipment is difficult to slow down the body from leaning to one side during the bridge-type back stretching exercise, and to propose a fitness equipment for back stretching exercise.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fitness equipment for back stretching exercise, comprising a bottom plate and an ABS plate arranged on the upper part of the bottom plate, a cavity is provided inside the bottom plate, and a pair of slide grooves are provided on the upper surface of the bottom plate, the inner walls of the two slide grooves are slidably connected with U-shaped sliders, the two ends of the ABS plate are hinged to the upper surface of the U-shaped slider, the reciprocating screws rotatably connected to the outer surfaces of the two U-shaped sliders are respectively threadedly connected to a nut fixedly connected to the inner wall of the slide groove, the ends of the two reciprocating screws close to each other are fixedly connected with a motor, the inner wall of a first piston cylinder fixedly connected to the inner wall of the cavity is slidably connected with two symmetrical piston rods, the two piston rods are respectively fixedly connected to a U-shaped slider, the first piston cylinder is connected to a rubber airbag fixedly connected to the middle part of the upper surface of the ABS plate through a first telescopic tube, the inner wall of the adjusting cylinder fixedly connected to the left side of the bottom plate is rotatably connected with a gear, the outer surface of the gear is meshed with two symmetrical racks, and the outer surfaces of the two racks are fixedly connected with a block through a telescopic rod.

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

[0008] The inner top wall and the inner bottom wall of the cavity are both provided with a first slide groove, the outer surface of the motor is fixedly connected with a pair of first sliding blocks slidably connected with two first slide grooves, the motor does not contact the outer surface of the first piston cylinder, and the output end of the motor is fixedly connected to the reciprocating screw.

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

[0010] A group of balls are rotatably connected to the outer surface of the rubber airbag, the upper end of the first telescopic tube is connected to the rubber airbag, and the lower end of the first telescopic tube is connected to the interior of the first piston cylinder, the piston rod extends to the outside of the first piston cylinder, and the piston rod passes through the cavity to the interior of the slide groove and is fixedly connected to the outer surface of the U-shaped slider, and the piston rod is slidably connected to the penetration point of the cavity.

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

[0012] An arc-shaped groove is provided in the middle of the upper surface of the ABS plate, and a rubber layer is fixedly connected to the inner wall of the arc-shaped groove.

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

[0014] The inner top wall and the inner bottom wall of the adjusting cylinder are both provided with a second slide groove, and the second sliding block fixedly connected to the side surface away from the two racks is slidably connected to the inner wall of a second slide groove respectively, and the two racks are parallel.

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

[0016] The ends of the two racks that are close to each other are fixedly connected with telescopic rods, and the two telescopic rods do not contact the outer surface of the gear. A through groove is opened on the left side of the adjusting cylinder, and the two telescopic rods pass through the through groove and are fixedly connected to the outer surface of the block, and the two telescopic rods are slidably connected to the inner wall of the through groove.

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

[0018] The inner wall of the adjusting cylinder is fixedly connected with a rubber block matched with the outer surface of the telescopic rod, and the inner walls of the two clamping blocks are fixedly connected with rubber membranes.

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

[0020] The inner wall of the second piston cylinder fixedly connected to the upper surface of the base plate is slidably connected with a piston plate, the extended end of the electric telescopic rod fixedly connected to the right side of the second piston cylinder is fixedly connected to the right side of the piston plate, and the second piston cylinder is connected to the interior of the two rubber airbags through two second telescopic tubes.

[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, the distances moved by the two racks are always the same through the coordinated setting of the gears, and the waist of the lying body is located at the midline of the upper surface of the ABS plate, thereby alleviating the phenomenon of tilting to one side during the bridge-type back extension exercise. The operation of the motor drives the reciprocating screw to rotate, and the reciprocating screw drives the U-shaped slider to move back and forth on the inner wall of the slide groove under the setting of the nut, so that the bending degree of the ABS plate changes continuously, thereby actively exercising the trainee's back extension. During the process, the U-shaped slider drives the piston rod to move back and forth on the inner wall of the first piston cylinder, so that the air inside the rubber airbag increases and continuously expands, driving the two sides of the waist of the trainee after stretching to move closer to the middle of the ABS plate, thereby alleviating the phenomenon of the trainee's back extension training tilting to one side. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a front cross-sectional structure of a fitness equipment for back stretching exercise proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the front cross-sectional structure of a first piston cylinder of a fitness equipment for back stretching exercise proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the right side cross-sectional structure of the first piston cylinder of a fitness equipment for back stretching exercise proposed by the present invention;

[0026] Figure 4It is a right side cross-sectional structural diagram of a chute of a fitness equipment for back stretching exercise proposed by the present invention;

[0027] Figure 5 A schematic diagram of the structure of a fitness equipment for back stretching exercise proposed by the present invention from a top view;

[0028] Figure 6 This is a schematic diagram of the left side cross-sectional structure of an adjustment cylinder of a fitness equipment for back stretching exercise proposed by the present invention;

[0029] Figure 7 A fitness equipment for back stretching exercise proposed by the present invention Figure 1 Schematic diagram of the structure at point A in the middle.

[0030] Legend: 1. Bottom plate; 2. ABS plate; 3. Cavity; 4. Slide groove; 5. U-shaped slider; 6. Reciprocating screw rod; 7. Nut; 8. Motor; 9. First piston cylinder; 10. Piston rod; 11. First telescopic tube; 12. Rubber airbag; 13. Adjusting cylinder; 14. Gear; 15. Rack; 16. Telescopic rod; 17. Block; 18. First slide groove; 19. First slider; 20. Ball bearing; 21. Arc groove; 22. Rubber layer; 23. Second slide groove; 24. Second slider; 25. Through groove; 26. Rubber block; 27. Rubber membrane; 28. Second piston cylinder; 29. ​​Piston plate; 30. Electric telescopic rod; 31. Second telescopic tube. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-7The present invention provides a technical solution: a fitness equipment for back stretching exercise, comprising a bottom plate 1 and an ABS plate 2 arranged on the top of the bottom plate 1, the ABS plate 2 having a certain flexibility. Generally speaking, a thinner ABS plate 2 is easier to bend, while a thicker plate may need to be bent with the assistance of heating or a special process. In order to increase the flexibility of the ABS plate 2, some plasticizers or other additives are sometimes added to the plate. These additives can reduce the glass transition temperature of the ABS plate 2, thereby making it easier to bend at a lower temperature. An arc-shaped groove 21 is provided in the middle of the upper surface of the ABS plate 2, and a rubber layer 22 is fixedly connected to the inner wall of the arc-shaped groove 21. The arrangement of the arc-shaped groove 21 and the rubber layer 22 not only provides a certain buffer for the spine of the back, but also provides space for the trainer's waist to move toward the middle of the ABS plate 2. The interior of the bottom plate 1 is provided with a space The two ends of the ABS plate 2 are hinged to the upper surface of the U-shaped slider 5, and the reciprocating screw rods 6 rotatably connected to the outer surfaces of the two U-shaped sliders 5 are respectively threadedly connected to a nut 7 fixedly connected to the inner wall of a slide groove 4. The ends of the two reciprocating screw rods 6 that are close to each other are fixedly connected to a motor 8. The motor 8 is located inside the cavity 3. The inner top wall and the inner bottom wall of the cavity 3 are both provided with a first slide groove 18. The outer surface of the motor 8 is fixedly connected to a pair of first sliders 19 that are slidably connected to the two first slide grooves 18. The matching setting of the first slide groove 18 and the first slider 19 limits the motor 8, so that the motor 8 can reciprocate horizontally left and right when working. The motor 8 does not contact the outer surface of the first piston cylinder 9 to prevent the motor 8 from rubbing against the outer surface of the first piston cylinder 9. The output end of the motor 8 is fixedly connected to the reciprocating screw rod 6.

[0033] The inner wall of the first piston cylinder 9 fixedly connected to the inner wall of the cavity 3 is slidably connected with two symmetrical piston rods 10, and the two piston rods 10 are respectively fixedly connected to a U-shaped slider 5. The piston rod 10 extends to the outside of the first piston cylinder 9, and the piston rod 10 passes through the cavity 3 to the inside of the slide groove 4 and is fixedly connected to the outer surface of the U-shaped slider 5. The piston rod 10 is slidably connected to the penetration of the cavity 3 to prevent the piston rod 10 from generating friction with the penetration of the cavity 3. The first piston cylinder 9 is connected to a rubber airbag 12 fixedly connected to the middle part of the upper surface of the ABS plate 2 through a first telescopic tube 11. The first telescopic tube 11 is connected to the outer surface of the first telescopic tube 11. The upper end is connected with the rubber airbag 12, and the lower end of the first telescopic tube 11 is connected with the interior of the first piston cylinder 9. The inner wall of the second piston cylinder 28 fixedly connected to the upper surface of the bottom plate 1 is slidably connected with the piston plate 29. The extended end of the electric telescopic rod 30 fixedly connected to the right side of the second piston cylinder 28 is fixedly connected to the right side of the piston plate 29. The second piston cylinder 28 is connected with the interior of the two rubber airbags 12 through two second telescopic tubes 31, that is, the lower end of the second telescopic tube 31 is fixedly connected with the interior of the second piston cylinder 28, and the upper end of the second telescopic tube 31 is fixedly connected with the interior of the rubber airbag 12.

[0034] The operation of the motor 8 drives the reciprocating screw 6 to rotate. The reciprocating screw 6 drives the U-shaped slider 5 to move back and forth on the inner wall of the slide groove 4 under the setting of the nut 7, so that the bending degree of the ABS plate 2 changes continuously, thereby actively exercising the trainee's back extension. During the process, the U-shaped slider 5 drives the piston rod 10 to move back and forth on the inner wall of the first piston cylinder 9, so that the air inside the first piston cylinder 9 circulates with the inside of the rubber airbag 12 through the first telescopic tube 11. The operation of the electric telescopic rod 30 drives the piston plate 29 to move back and forth in the second piston cylinder 28, so that the air inside the second piston cylinder 28 circulates with the inside of the rubber airbag 12. When the bending degree of the ABS plate 2 is large, the air inside the rubber airbag 12 increases and continuously expands, driving the two sides of the waist of the trainee after stretching to move closer to the middle part of the ABS plate 2, and this process has a buffering effect, which reduces the pressure on the muscles of the trainee's back extension, that is, the adjustment process of the bridge back extension anti-tilt is more comfortable, and the phenomenon of the trainee's back extension training tilting to one side is reduced.

[0035] The outer surface of the rubber airbag 12 is rotatably connected to a group of balls 20. The setting of the balls 20 is conducive to the expanded balls 20 driving the trainer's waist to move toward the middle of the ABS board 2. The inner wall of the adjustment cylinder 13 fixedly connected to the left side of the bottom plate 1 is rotatably connected to the gear 14. The gear 14 is located on the same plane as the extension line of the center line of the ABS board 2. The outer surface of the gear 14 is meshed with two symmetrical racks 15. The inner top wall and the inner bottom wall of the adjustment cylinder 13 are both provided with a second slide groove 23. The side away from the two racks 15 is fixedly connected to the second slide groove 23. The two sliders 24 are respectively slidably connected to the inner wall of a second slide groove 23, and the two racks 15 are parallel. The cooperation of the second slide groove 23 and the second slider 24 limits the left and right movement of the rack 15. At the same time, the moving distance of the two racks 15 in the opposite direction or in the opposite direction is always the same. The outer surfaces of the two racks 15 are fixedly connected with a block 17 through a telescopic rod 16. The inner wall of the adjusting cylinder 13 is fixedly connected with a rubber block 26 adapted to the outer surface of the telescopic rod 16. The rubber block 26 is set so that the telescopic rod 16 is in the adjusting cylinder 1 3 plays a buffering effect, the inner walls of the two blocks 17 are fixedly connected with rubber membranes 27, the setting of the rubber membranes 27 increases the friction of the inner wall of the block 17, which is conducive to the block 17 limiting the position of the trainer's feet, the ends of the two racks 15 close to each other are fixedly connected with telescopic rods 16, the two telescopic rods 16 do not contact the outer surface of the gear 14, and prevent the telescopic rods 16 from rubbing against the outer surface of the gear 14, the left side of the adjusting cylinder 13 is provided with a through slot 25, the two telescopic rods 16 both penetrate the through slot 25 and are fixed to the outer surface of the block 17 The two telescopic rods 16 are fixedly connected, and the two telescopic rods 16 are slidably connected to the inner wall of the through groove 25. The movement of the trainer's feet drives the block 17 and the telescopic rod 16 to move, and the telescopic rod 16 drives the rack 15 to move inside the adjusting cylinder 13. Under the coordinated setting of the gear 14, the moving distance of the two racks 15 is always the same, that is, after the trainer adjusts the distance between his feet, the waist of the lying body is located at the midline of the upper surface of the ABS plate 2, and the rubber airbags 12 are located on both sides of the trainer's waist, which further reduces the phenomenon of tilting to one side during the bridge back extension exercise.

[0036] Working principle: When in use, the motor 8 and the electric telescopic rod 30 are connected to the power supply, the trainer's feet are connected to the clamping block 17, the movement of the trainer's feet drives the clamping block 17 and the telescopic rod 16 to move, and the telescopic rod 16 drives the rack 15 to move inside the adjustment tube 13. Under the coordinated setting of the gear 14, the moving distance of the two racks 15 is always the same, that is, after the trainer adjusts the distance between the feet, the waist of the lying body is located at the midline of the upper surface of the ABS plate 2, and the rubber airbags 12 are located on both sides of the trainer's waist, which further slows down the phenomenon of tilting to one side during the bridge back stretching exercise. The work of the motor 8 drives the reciprocating screw 6 to rotate, and the reciprocating screw 6 drives the U-shaped slider 5 under the setting of the nut 7. The inner wall of the slide groove 4 moves back and forth left and right, so that the bending degree of the ABS plate 2 changes continuously, thereby actively exercising the trainee's back extension. During the process, the U-shaped slider 5 drives the piston rod 10 to move back and forth left and right on the inner wall of the first piston cylinder 9, so that the air inside the first piston cylinder 9 circulates with the inside of the rubber airbag 12 through the first telescopic tube 11. The air inside the rubber airbag 12 increases and continues to expand, driving the two sides of the trainee's waist after stretching to move closer to the middle of the ABS plate 2, and this process has a buffering effect, which reduces the pressure on the trainee's back extension muscles, that is, the adjustment process of the bridge back extension anti-tilt is more comfortable, which reduces the phenomenon of the trainee's back extension training tilting to one side.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fitness equipment for back stretching exercise, comprising a base plate (1) and an ABS plate (2) arranged on the upper part of the base plate (1), characterized in that: A cavity (3) is provided inside the base plate (1), and a pair of slide grooves (4) are provided on the upper surface of the base plate (1). The inner walls of the two slide grooves (4) are slidably connected to U-shaped sliders (5). The two ends of the ABS plate (2) are hinged to the upper surfaces of the U-shaped sliders (5). The reciprocating screw rods (6) rotatably connected to the outer surfaces of the two U-shaped sliders (5) are respectively threadedly connected to a nut (7) fixedly connected to the inner wall of a slide groove (4). The ends of the two reciprocating screw rods (6) that are close to each other are fixedly connected to a motor (8). The inner wall of the first piston cylinder (9) fixedly connected to the inner wall of the cavity (3) is The wall is slidably connected to two symmetrical piston rods (10), the two piston rods (10) are respectively fixedly connected to a U-shaped slider (5), the first piston cylinder (9) is connected to a rubber airbag (12) fixedly connected to the middle of the upper surface of the ABS plate (2) through a first telescopic tube (11), the inner wall of an adjustment cylinder (13) fixedly connected to the left side of the bottom plate (1) is rotatably connected to a gear (14), the outer surface of the gear (14) is meshed with two symmetrical racks (15), and the outer surfaces of the two racks (15) are fixedly connected to a clamping block (17) through a telescopic rod (16).

2. A fitness equipment for back stretching exercise according to claim 1, characterized in that: The inner top wall and the inner bottom wall of the cavity (3) are both provided with a first slide groove (18); the outer surface of the motor (8) is fixedly connected with a pair of first sliders (19) which are slidably connected to the two first slide grooves (18); the motor (8) does not contact the outer surface of the first piston cylinder (9); and the output end of the motor (8) is fixedly connected to the reciprocating screw rod (6).

3. The fitness equipment for back stretching exercise according to claim 1, characterized in that: A group of balls (20) are rotatably connected to the outer surface of the rubber airbag (12); the upper end of the first telescopic tube (11) is connected to the rubber airbag (12), and the lower end of the first telescopic tube (11) is connected to the interior of the first piston cylinder (9); the piston rod (10) extends to the outside of the first piston cylinder (9), and the piston rod (10) passes through the cavity (3) to the interior of the slide groove (4) and is fixedly connected to the outer surface of the U-shaped slider (5); the piston rod (10) is slidably connected to the penetration point of the cavity (3).

4. The fitness equipment for back stretching exercise according to claim 1, characterized in that: An arc-shaped groove (21) is provided in the middle of the upper surface of the ABS plate (2), and a rubber layer (22) is fixedly connected to the inner wall of the arc-shaped groove (21).

5. The fitness equipment for back stretching exercise according to claim 1, characterized in that: The inner top wall and the inner bottom wall of the adjusting cylinder (13) are both provided with a second sliding groove (23), and a second sliding block (24) fixedly connected to the side faces away from the two racks (15) is slidably connected to the inner wall of one second sliding groove (23) respectively, and the two racks (15) are parallel.

6. The fitness equipment for back extension exercise according to claim 1, characterized in that: The ends of the two racks (15) that are close to each other are fixedly connected with telescopic rods (16), the two telescopic rods (16) do not contact the outer surface of the gear (14), a through slot (25) is provided on the left side of the adjustment cylinder (13), the two telescopic rods (16) pass through the through slot (25) and are fixedly connected to the outer surface of the block (17), and the two telescopic rods (16) are slidably connected to the inner wall of the through slot (25).

7. The fitness equipment for back extension exercise according to claim 1, characterized in that: A rubber block (26) adapted to the outer surface of the telescopic rod (16) is fixedly connected to the inner wall of the adjustment cylinder (13), and a rubber membrane (27) is fixedly connected to the inner walls of the two clamping blocks (17).

8. The fitness equipment for back stretching exercise according to claim 1, characterized in that: The inner wall of the second piston cylinder (28) fixedly connected to the upper surface of the bottom plate (1) is slidably connected to a piston plate (29); the extended end of the electric telescopic rod (30) fixedly connected to the right side of the second piston cylinder (28) is fixedly connected to the right side of the piston plate (29); the second piston cylinder (28) is connected to the interior of the two rubber airbags (12) through two second telescopic tubes (31).

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