A stretching device for sports and fitness

Abstract

This utility model relates to the field of stretching device technology and discloses a stretching device for sports and fitness, including a base plate. A tensioning assembly is disposed within the inner cavity of the base plate. A height adjustment assembly is fixedly connected to the top of the base plate. A stretching assembly is fixedly connected to one side of the tensioning assembly. The tensioning assembly includes a fixed seat, one side of which is fixedly connected to the base plate. A fixed plate is fixedly connected to one side of the fixed seat. A rotating handle is disposed within the inner cavity of one side of the fixed plate. A threaded tube is fixedly connected to one side of the rotating handle. Through the tensioning assembly, the rotating handle drives the threaded tube to rotate, causing the moving block to move. Combined with the elasticity of a spring, the force exerted by the tensioning plate on the stretching assembly can be precisely adjusted, achieving multi-level control of the stretching intensity to meet the different stretching strength needs of exercisers. Simultaneously, the buffering effect of the spring prevents sudden changes in stretching intensity from causing muscle damage.

Description

Technical Field

[0001] This utility model relates to the field of stretching device technology, and in particular to a stretching device for sports and fitness. Background Technology

[0002] In the field of sports and fitness, stretching machines, as a common auxiliary device, have long surpassed the scope of simple muscle relaxation. Whether it is professional athletes' pre-competition warm-up and post-competition muscle recovery, or ordinary fitness enthusiasts' daily exercise to improve flexibility, stretching machines play an indispensable role. They can help exercisers more accurately target muscle groups through targeted external force assistance, breaking the limitations of simply relying on their own strength for stretching, thereby more effectively improving the body's flexibility, relieving muscle tension, and reducing the risk of sports injuries.

[0003] In terms of adjusting the stretching intensity, most existing sports and fitness stretching devices use relatively simple mechanical structures. They either have coarse adjustment settings that cannot achieve fine control of the intensity, or the intensity changes abruptly during adjustment, which can easily cause discomfort or even muscle strains to users. The backrest height is often fixed, but different users have significant differences in height and body shape. A fixed backrest height cannot conform to the back curve of each person, which not only affects the comfort of stretching, but may also cause the body to lose balance due to improper support. These problems together make it difficult for existing stretching devices to truly meet the comprehensive needs of different fitness groups in terms of stretching intensity and comfort.

[0004] Therefore, those skilled in the art have provided a stretching device for sports and fitness to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the problems of inconvenient tension adjustment and fixed backrest height in traditional stretchers that cannot accommodate different users, this utility model provides a stretcher for sports and fitness, employing the following technical solution:

[0006] A stretching device for sports and fitness includes a base plate. A tensioning assembly is disposed in the inner cavity of the base plate. A height adjustment assembly is fixedly connected to the top of the base plate. A stretching assembly is fixedly connected to one side of the tensioning assembly. The tensioning assembly includes a fixed seat. One side of the fixed seat is fixedly connected to the base plate. A fixed plate is fixedly connected to one side of the fixed seat. A rotating handle is disposed in the inner cavity of one side of the fixed plate. A threaded tube is fixedly connected to one side of the rotating handle. A movable block is threadedly connected to the inner cavity of the threaded tube. A spring is sleeved in the inner cavity of the movable block. One side of the spring is fixedly connected to the movable block. A tensioning plate is fixedly connected to the other side of the spring. A fixed shaft is sleeved in the inner cavity of the spring. One side of the fixed shaft is fixedly connected to the tensioning plate. The other side of the fixed shaft extends through the inner cavity of the fixed seat.

[0007] The present invention is further configured such that the height adjustment component includes a vertical plate, the bottom of which is fixedly connected to a base plate. A fixing hole is provided on one side of the vertical plate, and the fixing holes are equidistant from each other. One side of the fixing hole extends to the other side of the vertical plate. Two card seats are fixedly connected to the surface of the vertical plate. A limit rod is fixedly connected to one side of each card seat. A limit sleeve is fitted on the surface of the limit rod. A locking rod is fixedly connected to one side of the limit sleeve. A second spring is fitted on one side of the locking rod. A backrest mechanism is fixedly connected to one side of the second spring. One side of the locking rod extends into the cavity of the fixing hole. One side of the limit rod is fixedly connected to the backrest mechanism. Control handles are fixedly connected to both sides of the limit sleeve.

[0008] The present invention is further configured such that the tensioning assembly includes a connecting plate, one side of the connecting plate is fixedly connected to a tensioning plate, a tensioning frame is fixedly connected to the top of the connecting plate, the number of tensioning frames is two, a tensioning rod is sleeved in the inner cavity of the tensioning frame, a contact rod is fixedly connected to both sides of the tensioning rod, and a moving mechanism is fixedly connected to both sides of the connecting plate.

[0009] The present invention is further provided that a handrail is fixedly connected to the top of the base plate, and the number of the handrails is two.

[0010] The present invention is further configured such that a support plate is fixedly connected to one side of the bottom of the base plate, and an installation hole is opened on the bottom of one side of the support plate. A second support plate is fixedly connected to the other side of the bottom of the base plate, and a pad is fixedly connected to the bottom of the second support plate. An installation hole is opened on both sides of the pad.

[0011] The present invention is further configured such that the backrest mechanism includes two stabilizing plates, one side of which is fixedly connected to a limiting rod, and the other side of which is fixedly connected to a cushion.

[0012] The present invention is further configured such that the moving mechanism includes a moving frame, and the number of moving frames is two. One side of the moving frame is fixedly connected to a connecting plate, and both sides of the bottom of the moving frame are fixedly connected to forks. The inner cavity of the forks is movably connected to moving wheels through bearings.

[0013] In summary, this utility model has the following beneficial effects:

[0014] 1. This utility model, through the setting of the tensioning component, rotates the handle to drive the threaded tube to rotate, causing the moving block to move. With the elastic effect of the first spring, the force of the tensioning plate on the stretching component can be precisely adjusted to achieve multi-level control of the stretching force, meet the stretching intensity needs of different exercisers, and at the same time, the buffering effect of the first spring can prevent sudden changes in stretching force from causing damage to the muscles.

[0015] 2. This utility model uses a control handle to drive the locking rod to disengage from or engage with the fixing holes at different positions. Combined with the reset effect of the second spring, the height of the backrest can be flexibly adjusted through the height adjustment component to adapt to the back support needs of users of different heights and body types, thereby improving the comfort of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the tensioning component of this utility model.

[0018] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the height adjustment component of this utility model.

[0020] Figure 5 This is a cross-sectional structural diagram of the height adjustment component of this utility model.

[0021] Figure 6 This is a utility model Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0022] Figure 7 This is a structural schematic diagram of the tensioning component of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base plate; 2. Tensioning assembly; 21. Fixed seat; 22. Fixed plate; 23. Rotating handle; 24. Threaded pipe; 25. Moving block; 26. Spring 1; 27. Tensioning plate; 28. Fixed shaft; 3. Height adjustment assembly; 31. Vertical plate; 32. Fixing hole; 33. Card seat; 34. Limiting rod; 35. Limiting sleeve; 36. Card rod; 37. Spring 2; 38. Backrest mechanism; 381. Stabilizing plate; 382. Cushion; 39. Control handle; 4. Tensioning assembly; 41. Connecting plate; 42. Tensioning frame; 43. Tensioning rod; 44. Contact rod; 45. Moving mechanism; 451. Moving frame; 452. Fork frame; 453. Moving wheel; 5. Handrail; 6. Support plate 1; 7. Mounting hole; 8. Support plate 2; 9. Pad plate. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] Example 1:

[0027] Please refer to Figure 1-7A sports and fitness stretching device includes a base plate 1, a tensioning component 2 disposed in the inner cavity of the base plate 1, a height adjustment component 3 fixedly connected to the top of the base plate 1, a stretching component 4 fixedly connected to one side of the tensioning component 2, the tensioning component 2 including a fixed seat 21, one side of the fixed seat 21 fixedly connected to the base plate 1, a fixed plate 22 fixedly connected to one side of the fixed seat 21, a rotating handle 23 disposed in the inner cavity of one side of the fixed plate 22, a threaded tube 24 fixedly connected to one side of the rotating handle 23, a moving block 25 threadedly connected to the inner cavity of the threaded tube 24, a spring 26 sleeved in the inner cavity of the moving block 25, one side of the spring 26 fixedly connected to the moving block 25, a tensioning plate 27 fixedly connected to the other side of the spring 26, a fixed shaft 28 sleeved in the inner cavity of the spring 26, one side of the fixed shaft 28 fixedly connected to the tensioning plate 27, and the other side of the fixed shaft 28 extending through the inner cavity of the fixed seat 21.

[0028] In this embodiment: the fixed base 21 is securely installed on one side of the base plate 1, the fixed plate 22 is fixed on one side of the fixed base 21, and the rotating handle 23 is embedded in the inner cavity of one side of the fixed plate 22. When the user pulls out the rotating handle 23 and rotates it, the threaded tube 24 fixedly connected to it will rotate synchronously. Since the moving block 25 and the threaded tube 24 are connected by threads, the moving block 25 will move horizontally along the axial direction of the threaded tube 24. A spring 26 is fitted inside the inner cavity of the movable block 25. One end of the spring 26 is fixed to the movable block 25, and the other end is connected to the tensioning plate 27. This connection method allows the displacement of the movable block 25 to be transmitted to the tensioning plate 27 through the spring 26. A fixed shaft 28 is also fitted inside the inner cavity of the spring 26. One end of the fixed shaft 28 is fixed to the tensioning plate 27, and the other end passes through the inner cavity of the fixed seat 21. This design effectively restricts the movement trajectory of the tensioning plate 27, ensuring that it can only move along the direction of the fixed shaft 28, and avoiding deviation during the tensioning process. When the movable block 25 moves toward the tensioning plate 27, the spring 26 is compressed and generates elastic force, pushing the tensioning plate 27 to achieve tension adjustment.

[0029] Example 2:

[0030] Reference Figure 1-7A sports and fitness stretching device, the height adjustment component 3 includes a vertical plate 31, the bottom of which is fixedly connected to a base plate 1. A fixing hole 32 is provided on one side of the vertical plate 31, the fixing holes 32 are equidistant from each other, and one side of the fixing hole 32 extends to the other side of the vertical plate 31. Two card holders 33 are fixedly connected to the surface of the vertical plate 31. A limit rod 34 is fixedly connected to one side of each card holder 33. A limit sleeve 35 is fitted onto the surface of the limit rod 34. A locking rod 36 is fixedly connected to one side of the limit sleeve 35. A second spring 37 is fitted onto one side of the locking rod 36. A backrest mechanism 38 is fixedly connected to one side of the second spring 37. One side of the locking rod 36 extends into the cavity of the fixing hole 32. One side of the limit rod 34 is fixedly connected to the backrest mechanism 38. Control handles 39 are fixedly connected to both sides of the limit sleeve 35. One side of a connecting plate 41 is fixedly connected to a tensioning plate 27. A stretching frame 42 is fixedly connected to the top of the connecting plate 41. There are two of them. The inner cavity of the tension frame 42 is fitted with a tension rod 43. Both sides of the tension rod 43 are fixedly connected with contact rods 44. Both sides of the connecting plate 41 are fixedly connected with a moving mechanism 45. The top of the base plate 1 is fixedly connected with a handrail 5. There are two handrails 5. One side of the bottom of the base plate 1 is fixedly connected with a support plate 6. The bottom of one side of the support plate 6 has a mounting hole 7. The other side of the bottom of the base plate 1 is fixedly connected with a support plate 8. The bottom of the support plate 8 is fixedly connected with a pad 9. Both sides of the pad 9 have mounting holes 7. There are two stabilizing plates 381. One side of the stabilizing plate 381 is fixedly connected with a limiting rod 34. The other side of the stabilizing plate 381 is fixedly connected with a cushion 382. There are two moving frames 451. One side of the moving frame 451 is fixedly connected with the connecting plate 41. Both sides of the bottom of the moving frame 451 are fixedly connected with forks 452. The inner cavity of the forks 452 is movably connected with moving wheels 453 through bearings.

[0031] In this embodiment: the bottom of the upright plate 31 is firmly connected to the base plate 1, and the fixing holes 32 equidistantly opened on its side provide multiple height adjustment options. Two card holders 33 fixed to the surface of the upright plate 31 are respectively connected to limit rods 34. One end of the limit rod 34 extends to the backrest mechanism 38 and is fixed thereto, forming a stable support structure. The limit sleeve 35 is sleeved on the surface of the limit rod 34, and one side of it is fixed to the card rod 36. The surface of the card rod 36 is covered with a second spring 37, and one side of the second spring 37 is connected to the backrest mechanism 38. When the user needs to adjust the height, he only needs to pull the control handles 39 on both sides of the limit sleeve 35, and the limit sleeve 35 will drive the card rod 36 along the limit. When the lever 34 moves in the direction of the position, the second spring 37 is compressed, and the locking lever 36 disengages from the inner cavity of the fixing hole 32. The backrest mechanism 38 can then move freely up and down. After adjusting to a suitable height, the control handle 39 is released, and the second spring 37 resets under the action of elasticity, pushing the locking lever 36 to re-engage into the corresponding inner cavity of the fixing hole 32, thus completing the height fixation. One side of the connecting plate 41 of the tension assembly 4 is fixedly connected to the tension plate 27, and the top is fixedly connected to two tension frames 42. The tension rod 43 is sleeved in the inner cavity of the tension frame 42, and the contact rods 44 on both sides of the tension rod 43 directly contact the user's body. The two armrests 5 on the top of the base plate 1 are symmetrically distributed in suitable positions for use. When performing stretching exercises, the user can naturally grip the handrails 5 for stable support. Support plates 6 and 8 at the bottom of the base plate 1 are located on either side, forming a stable support structure. The mounting holes 7 on the bottom of support plate 6 correspond to the mounting holes 7 on the pad 9, allowing the user to secure the stretcher to the ground using bolts or other connectors, preventing slippage due to stress during use. The two stabilizing plates 381 of the backrest mechanism 38 are fixedly connected to the limiting rods 34, forming a robust frame structure. The backrest 382 is fixed to the other side of the stabilizing plates 381, directly contacting the user's back. Two movable frames 451 of the structure 45 are symmetrically fixed on both sides of the connecting plate 41, and forks 452 are fixed on both sides of the bottom. The movable wheels 453 are movably connected to the inner cavity of the forks 452 through bearings. When the tension plate 27 moves under the action of the tensioning component 2, it will drive the connecting plate 41 to move synchronously. The connecting plate 41 will then drive the tension frame 42 and the tension rod 43 to move, realizing the stretching action for the user. During this process, the movable wheels 453 will roll along the base plate 1, converting the sliding friction of the connecting plate 41 into rolling friction, which greatly reduces the movement resistance, makes the stretching process more stable and smooth, and also reduces the wear of various components and extends the service life of the equipment.

[0032] The implementation principle of this utility model is as follows: During use, the device status can be adjusted according to individual needs. The rotating handle 23 in the inner cavity of one side of the fixed plate 22 is pulled out and rotated. The rotating handle 23 drives the threaded tube 24 to rotate. Since the moving block 25 is threadedly connected to the threaded tube 24, the moving block 25 moves horizontally along the axis of the threaded tube 24. The displacement of the moving block 25 is transmitted to the tensioning plate 27 through the spring 26. Simultaneously, the fixed shaft 28 slides within the inner cavity of the fixed seat 21, restricting the movement trajectory of the tensioning plate 27. The elastic force generated by the compression of the spring 26 pushes the tensioning plate 27, thereby… After completing the tension adjustment to accommodate different stretching force requirements, pull the control handles 39 on both sides of the limiting sleeve 35. The limiting sleeve 35 moves along the limiting rod 34, causing the locking rod 36 to disengage from the fixing hole 32 of the upright plate 31. At this time, the second spring 37 is compressed, and the backrest mechanism 38 can move up and down along the upright plate 31 with the limiting rod 34. When the appropriate height is adjusted, release the control handles 39. The second spring 37 resets and pushes the locking rod 36 to re-engage into the corresponding fixing hole 32, thereby fixing the height of the backrest mechanism 38 and meeting the back support needs of users of different heights.

[0033] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stretching device for physical fitness, comprising a base plate (1), characterized in that: The base plate (1) is provided with a tensioning component (2) in its inner cavity, and a height adjustment component (3) is fixedly connected to the top of the base plate (1). A tensioning component (4) is fixedly connected to one side of the tensioning component (2). The tensioning assembly (2) includes a fixed base (21), one side of which is fixedly connected to the base plate (1), and a fixed plate (22) is fixedly connected to one side of the fixed base (21). A rotating handle (23) is provided in the inner cavity of one side of the fixed plate (22), and a threaded tube (24) is fixedly connected to one side of the rotating handle (23). A moving block (25) is threadedly connected to the inner cavity of the threaded tube (24). A spring (26) is sleeved in the inner cavity of the moving block (25). One side of the spring (26) is fixedly connected to the moving block (25), and a tensioning plate (27) is fixedly connected to the other side of the spring (26). A fixed shaft (28) is sleeved in the inner cavity of the spring (26). One side of the fixed shaft (28) is fixedly connected to the tensioning plate (27), and the other side of the fixed shaft (28) extends through the inner cavity of the fixed base (21).

2. The stretching device for physical fitness according to claim 1, wherein: The height adjustment component (3) includes a vertical plate (31), the bottom of which is fixedly connected to the base plate (1). A fixing hole (32) is provided on one side of the vertical plate (31), and the fixing holes (32) are equidistant from each other. One side of each fixing hole (32) extends to the other side of the vertical plate (31). Two card holders (33) are fixedly connected to the surface of the vertical plate (31). A limit rod (34) is fixedly connected to one side of each card holder (33). A limiting sleeve (35) is fitted on the surface of the limiting rod (34). A locking rod (36) is fixedly connected to one side of the limiting sleeve (35). A second spring (37) is fitted on one side of the locking rod (36). A backrest mechanism (38) is fixedly connected to one side of the second spring (37). One side of the locking rod (36) extends through the inner cavity of the fixing hole (32). One side of the limiting rod (34) is fixedly connected to the backrest mechanism (38). Control handles (39) are fixedly connected to both sides of the limiting sleeve (35).

3. The stretching device for physical fitness according to claim 1, wherein: The tensioning assembly (4) includes a connecting plate (41), one side of which is fixedly connected to a tensioning plate (27). A tensioning frame (42) is fixedly connected to the top of the connecting plate (41). There are two tensioning frames (42). A tensioning rod (43) is sleeved in the inner cavity of the tensioning frame (42). A contact rod (44) is fixedly connected to both sides of the tensioning rod (43). A moving mechanism (45) is fixedly connected to both sides of the connecting plate (41).

4. The stretching device according to claim 1, wherein: The top of the base plate (1) is fixedly connected to a handrail (5), and there are two handrails (5).

5. The stretching device according to claim 1, wherein: A support plate (6) is fixedly connected to one side of the bottom of the base plate (1). A mounting hole (7) is provided on the bottom of one side of the support plate (6). A support plate (8) is fixedly connected to the other side of the bottom of the base plate (1). A pad (9) is fixedly connected to the bottom of the support plate (8). Mounting holes (7) are provided on both sides of the pad (9).

6. The stretching device for physical fitness according to claim 2, wherein: The backrest mechanism (38) includes a stabilizing plate (381), and there are two stabilizing plates (381). One side of the stabilizing plate (381) is fixedly connected to the limiting rod (34), and the other side of the stabilizing plate (381) is fixedly connected to a cushion (382).

7. The stretching device for physical fitness according to claim 3, wherein: The moving mechanism (45) includes a moving frame (451), and there are two moving frames (451). One side of the moving frame (451) is fixedly connected to the connecting plate (41). Forks (452) are fixedly connected to both sides of the bottom of the moving frame (451). The inner cavity of the fork (452) is movably connected to the moving wheel (453) through the bearing.

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