Chest expander for safe fitness
By designing trapezoidal support frame and leg limiting assembly on the tensioner, the combination of adjustment frame, rotating frame and sliding rod can achieve flexible limiting of the user's legs, solving the problem that existing tensioners cannot adapt to users of different heights, and improving stability and functionality.
Patent Information
- Application Number
- CN202422427369.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The leg limiting components of the existing tensioner cannot be effectively adapted to users of different heights, resulting in inconvenience and insufficient stability, which affects the fitness process.
A tensioner including a trapezoidal support frame, an L-shaped mounting frame, and a leg limiting assembly is designed. The leg limiting assembly achieves horizontal and vertical adjustment of the user's legs through the combination of an adjustment frame, a rotating frame and a sliding rod, and limiting the position with a fastening rod and a locking rod to ensure stability.
It realizes flexible limits on the leg heights of different users, improves user stability and safety, reduces operation difficulty, and enhances the functionality and applicability of the device.
Smart Images
Figure CN223248712U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fitness equipment, and in particular relates to a safe fitness puller. Background Art
[0002] A back exercise machine, also known as a pull-up machine, is a piece of fitness equipment specifically designed to strengthen the back muscles. It typically features an adjustable lever and seat cushion, allowing the user to adjust the seat height to suit their height and needs. Pulling the lever downward effectively targets the latissimus dorsi and teres major muscles. This machine not only strengthens the back muscles but also improves posture and prevents problems like rounded shoulders. Proper use of a back exercise machine can increase shoulder flexibility and strength.
[0003] At present, when people use a puller to train their back muscles, they need to use their upper limbs to exert force. In order to ensure the stability of the user, the user's legs need to be limited to a certain extent. The leg limiting assembly set up on the existing puller usually includes a support rod and limiting wheels symmetrically set up on both sides of the support rod. When in use, the user sits on the seat of the puller and places his legs under the limiting wheels. The above method has certain disadvantages: for users of different heights, the height of their legs after sitting on the seat is different, and the positions where the legs need to be limited are also different. This brings severe tests to the practicality of the leg limiting assembly. Most of the existing leg limiting assemblies can only be adjusted in the vertical direction, and the operation is relatively inconvenient. They cannot effectively meet the different usage needs of different users, which affects the user's fitness process and has poor functionality. Utility Model Content
[0004] In response to the technical problems existing in the use of the above-mentioned puller, the utility model proposes a safe fitness puller with reasonable design, simple structure, easy processing, and the ability to limit the different leg heights and positions of different users, effectively improving the stability of the user in the process of applying force, ensuring safety, and fully improving the functionality of the device, reducing the difficulty of operation, and effectively meeting the needs of use.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is a safe fitness puller, including a puller body, the puller body including a support frame designed in a trapezoidal shape, a mounting frame designed in an L shape is provided below the support frame, a seat is provided above the outer side of the mounting frame, and a leg limit assembly is provided on the mounting frame located on one side of the seat, the leg limit assembly includes an adjustment frame designed in a concave shape, a first fastening rod is provided below the adjustment frame to fasten it to the mounting frame, a rotating frame with a J-shaped cross section is provided on the adjustment frame, a connecting ear seat is provided between the adjustment frame and the rotating frame, a sliding rod is provided in the rotating frame, a second fastening rod for fastening the sliding rod is provided on the outer side of the rotating frame, a moving rod is provided in the sliding rod, and a limiting frame is provided at the end of the moving rod.
[0006] Preferably, a limiting hole is provided in the movable rod, and a locking rod is provided on the outer side of the sliding rod.
[0007] Preferably, the limiting frame includes a plate frame, a mounting seat is provided on the inner side of the plate frame, a rotating rod is provided in the mounting seat and is connected to the moving rod, and a pad is provided below the plate frame.
[0008] Preferably, a concave frame is provided above the support frame, pulleys are provided on the left and right sides of the concave frame, a vertical rod is provided on the inner side of the support frame, a gravity plate is provided on the vertical rod, an insertion rod is provided at the geometric center of the gravity plate, a positioning rod is provided in front of the gravity plate, a pull rope is provided above the insertion rod and is wound around the pulley, and a pull rod is provided at the end of the pull rope.
[0009] Compared with the prior art, the advantages and positive effects of the present invention are:
[0010] 1. The utility model provides a safe fitness puller. Through the leg limit assembly, when the user sits on the seat, the adjustment frame is first adjusted in the horizontal direction according to the position and height of the user's legs, and then the first fastening rod is used to limit it to prevent it from deflecting. Then, according to the height of the user's legs, the position of the sliding rod is first adjusted, especially so that its lower end abuts against the upper end surface of the mounting frame, and then the position of the moving rod within the sliding rod is adjusted, especially so that the lower end of the limit frame abuts against the user's legs. When the lower end of the sliding rod abuts against the mounting frame, the limit frame also abuts against the user's legs, and then the second fastening rod and the locking rod are respectively adjusted. Tighten it to limit its position. In this state, the upper part of the leg limit assembly limits the user's legs with a lever-like principle. This design not only ensures the stability of the user in the process of applying force and ensures the effective implementation of fitness work, but also allows the user to make free adjustments, with strong adaptability. At the same time, the process of placing or removing the legs is more convenient and has strong functionality. The device has a reasonable design, simple structure, and easy processing, and can limit the different leg heights and positions of different users, effectively improving the stability of the user in the process of applying force, ensuring safety, and fully improving the functionality of the device, reducing the difficulty of operation, and effectively meeting the needs of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0012] Figure 1 This is a schematic diagram of the structure of a safe fitness puller;
[0013] Figure 2 This is a structural diagram of a safe fitness puller from another perspective;
[0014] Figure 3 This is a side view of the structure of a safety fitness puller;
[0015] In the above figures, 1. support frame; 2. mounting frame; 3. seat; 4. leg limit assembly; 41. adjustment frame; 42. first fastening rod; 43. rotating frame; 44. connecting ear seat; 45. sliding rod; 46. second fastening rod; 47. moving rod; 471. limiting hole; 472. locking rod; 5. limiting frame; 51. plate frame; 52. mounting seat; 53. rotating rod; 54. pad; 6. concave frame; 7. pulley; 8. vertical rod; 9. gravity plate; 10. insertion rod; 11. positioning rod; 12. pull rope; 13. pull rod. DETAILED DESCRIPTION
[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0018] Examples, such as Figures 1 to 3As shown, a safe fitness puller includes a puller body, which includes a support frame 1 designed in a trapezoidal shape to ensure the stability of the device. A mounting frame 2 designed in an L shape is provided below the support frame 1. The upper end of the mounting frame 2 is connected to the upper end of the support frame 1, and a frame leg is extended from the lower end to ensure that the device has good performance. A seat 3 is provided above the outer side of the mounting frame 2, which provides convenient conditions for the user's sitting posture; in order to effectively limit the user's legs, especially to ensure stability during the force application process, a mounting frame 2 located on one side of the seat 3 is provided A leg limit assembly 4 is provided, which includes an adjustment frame 41 with a concave shape design, a first fastening rod 42 is provided below the adjustment frame 41 to fasten it to the mounting frame 2, a rotating frame 43 with a J-shaped cross section is provided on the adjustment frame 41, a connecting ear seat 44 is provided between the adjustment frame 41 and the rotating frame 43, a sliding rod 45 is provided in the rotating frame 43, and a second fastening rod 46 for fastening the sliding rod 45 is provided on the outside of the rotating frame 43, a moving rod 47 is provided in the sliding rod 45, and a limiting frame 5 is provided at the end of the moving rod 47, which is specifically described as follows: the adjustment frame 41 can be relative to the mounting frame 2 is moved and adjusted in the horizontal direction to adapt to different leg positions. The rotating frame 43 can be rotated relative to the adjusting frame 41 under the action of the connecting ear seat 44 to adapt to different leg heights. Further, the adjusting frame 41 is first adjusted in the horizontal direction, and then the first fastening rod 42 is used to limit it to prevent it from deflecting. Then, according to the height of the user's legs, the position of the sliding rod 45 is first adjusted, especially so that its lower end abuts against the upper end surface of the mounting frame 2, and then the position of the moving rod 47 in the sliding rod 45 is adjusted, especially so that the limiting rod 42 is fixed to the upper end surface of the mounting frame 2. The lower end of the positioning frame 5 is against the user's leg. When the lower end of the sliding rod 45 is against the mounting frame 2, the limiting frame 5 is also against the user's leg. Then, the second fastening rod 46 and the locking rod 472 are tightened respectively to limit their positions. In this state, the upper half of the leg limiting assembly 4 limits the user's leg by the principle of a lever. This design not only ensures the stability of the user in the process of applying force and ensures the effective implementation of fitness work, but also facilitates the user to make free adjustments and has strong adaptability. At the same time, the process of placing or removing the legs is more convenient and has strong functionality.
[0019] In the above process: through the leg limit assembly 4, when the user sits on the chair seat 3, the adjustment frame 41 is first adjusted in the horizontal direction according to the position and height of the user's legs, and then the first fastening rod 42 is used to limit it to prevent it from deflecting. Then, according to the height of the user's legs, the position of the sliding rod 45 is first adjusted, especially so that its lower end abuts against the upper end surface of the mounting frame 2, and then the position of the moving rod 47 in the sliding rod 45 is adjusted, especially so that the lower end of the limit frame 5 abuts against the user's legs. When the lower end of the sliding rod 45 abuts against the mounting frame 2, the limit frame 5 also abuts against the user's legs, and then the second fastening rod 46 and the locking rod 47 are respectively adjusted. The rod 472 is tightened to limit its position. In this state, the upper half of the leg limit assembly 4 limits the user's legs using a lever-like principle. This design not only ensures the stability of the user during the force application process and ensures the effective implementation of fitness work, but also allows the user to make free adjustments, with strong adaptability. At the same time, the leg placement or removal process is more convenient and has strong functionality. The device has a reasonable design, simple structure, and easy processing, and can limit the different leg heights and positions of different users, effectively improving the stability of the user during the force application process, ensuring safety, and fully improving the functionality of the device, reducing the difficulty of operation, and effectively meeting usage needs.
[0020] The locking rod 472 is used to fix the moving rod 47 and the sliding rod 45 so that the user can move the leg limiter 40 in a fixed position.
[0021] In order to further improve the functionality of the limit frame 5, the limit frame 5 includes a plate frame 51, a mounting seat 52 is provided on the inner side of the plate frame 51, a rotating rod 53 is provided in the mounting seat 52, and is connected to the moving rod 47, and a pad 54 is provided under the plate frame 51. The specific description is: the mounting seat 52 and the plate frame 51 are fixedly connected, the rotating rod 53 is placed in the moving rod 47, and the mounting seat 52 and the rotating rod 53 can rotate relative to the moving rod 47. When adjusting the position of the leg limit assembly 4, it is especially ensured that the pad 54 can be maintained in a vertical state, and its lower end is against the user's leg, thereby realizing the limitation of the user's leg, ensuring the stability of the user's force application process, and then ensuring the effective implementation of fitness work to meet the use requirements.
[0022] In order to ensure the normal use of the tensioner equipment and provide users with good exercise performance, a concave frame 6 is provided above the support frame 1, and pulleys 7 are provided on the left and right sides of the concave frame 6. A vertical rod 8 is provided on the inner side of the support frame 1, and a gravity plate 9 is provided on the vertical rod 8. An insertion rod 10 is provided at the geometric center of the gravity plate 9, a positioning rod 11 is provided in front of the gravity plate 9, and a pull rope 12 is provided above the insertion rod 10 and is wound on the pulley 7. A pull rod 13 is provided at the end of the pull rope 12. It can be described as follows: a socket is also provided in the insertion rod 10, which facilitates the positioning rod 11 to pass through the process hole of the gravity plate 9 and cooperate with the socket. According to different usage requirements, the position of the insertion rod 10 can be freely adjusted, and then the gravity plate 9 and the insertion rod 10 are fixed together using the positioning rod 11. People pull the pull rod 13 downward to make the pull rope 12 slide on the pulley 7, and drive the insertion rod 10 and a certain number of gravity plates 9 limited by the positioning rod 11 to be lifted together, thereby ensuring the realization of fitness movements and meeting usage requirements.
[0023] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.
Claims
1. A safe fitness puller, comprising a puller body, characterized in that: The tensioner body includes a support frame designed in a trapezoidal shape, a mounting frame designed in an L shape is provided below the support frame, a seat is provided above the outer side of the mounting frame, and a leg limit assembly is provided on the mounting frame located on one side of the seat, and the leg limit assembly includes an adjustment frame designed in a concave shape, a first fastening rod is provided below the adjustment frame to fasten it to the mounting frame, a rotating frame with a J-shaped cross section is provided on the adjustment frame, a connecting ear seat is provided between the adjustment frame and the rotating frame, a sliding rod is provided in the rotating frame, a second fastening rod for fastening the sliding rod is provided on the outer side of the rotating frame, a moving rod is provided in the sliding rod, and a limiting frame is provided at the end of the moving rod.
2. A safe fitness puller according to claim 1, characterized in that: A limiting hole is provided in the movable rod, and a locking rod is provided on the outer side of the sliding rod.
3. A safe fitness puller according to claim 2, characterized in that: The limiting frame includes a plate frame, a mounting seat is provided on the inner side of the plate frame, a rotating rod is provided in the mounting seat and is connected to the moving rod, and a pad is provided below the plate frame.
4. A safe fitness puller according to claim 3, characterized in that: A concave frame is provided above the support frame, pulleys are provided on the left and right sides of the concave frame, a vertical rod is provided on the inner side of the support frame, a gravity sheet is provided on the vertical rod, an insertion rod is provided at the geometric center of the gravity sheet, a positioning rod is provided in front of the gravity sheet, a pull rope is provided above the insertion rod and is wound around the pulley, and a pull rod is provided at the end of the pull rope.