A fitness upper limb traction device

Abstract

This utility model relates to the field of fitness equipment technology and discloses an upper limb traction device for fitness, including a support rod. A lifting sleeve is provided at the top of the support rod, and a circular outer shell is fixedly connected to the top of the lifting sleeve. Fixed traction frames are respectively provided at both ends of the circular outer shell, and traction ropes are fixedly connected to both ends of the fixed traction frames. A handle is detachably connected to the end of each traction rope. A height and shoulder distance adjustment mechanism is provided on the support rod, including a threaded rod A. A lifting groove is provided at the top of the support rod. In this utility model, the height and shoulder distance adjustment mechanism utilizes a worm gear, bevel gear, and bidirectional threaded rod transmission to achieve synchronous widening of the traction frame when raising and synchronous narrowing when lowering, accurately adapting to short people with narrow shoulders. The adjustment operation is convenient, and the limiting structure ensures stable operation, improving adaptability and stability.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to an upper limb traction device for fitness. Background Technology

[0002] The upper limb traction device for fitness is a common piece of equipment in existing fitness equipment used to exercise upper limb muscles and stretch the shoulders and neck. Through the cooperation of the traction rope and the grip, the user can complete the traction movement by exerting force with the arms, thereby enhancing upper limb strength and improving shoulder and neck flexibility.

[0003] When using the existing upper limb traction device for fitness, the user needs to first determine whether the device is suitable based on their own situation. If the height or shoulder distance is not suitable, it is necessary to operate the height adjustment component and shoulder distance adjustment component separately. After adjustment, hold the fixed grip structure with both hands and use the arms to stretch the traction rope to repeat the movement to achieve upper limb exercise.

[0004] However, existing devices adjust height and shoulder width independently, resulting in cumbersome operation and difficulty in accurately matching the shoulder width needs of people of different heights. This is especially true for shorter individuals with narrow shoulders, where the adjusted height and shoulder width may not be well-suited. Therefore, a fitness upper limb traction device is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an upper limb traction device for fitness, aiming to solve the problems of independent height and shoulder distance adjustment, cumbersome operation, poor adaptability and insufficient operational stability of existing upper limb traction devices for fitness.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an upper limb traction device for fitness, comprising a support rod, a lifting sleeve provided at the top of the support rod, a circular outer shell fixedly connected to the top of the lifting sleeve, fixed traction frames provided at both ends of the circular outer shell, traction ropes fixedly connected to both ends of the fixed traction frames, a handle detachably connected to the end of the traction ropes, and a height and shoulder distance adjustment mechanism provided on the support rod; The height and shoulder distance adjustment mechanism includes a threaded rod A. A lifting groove is formed at the top of the support rod. The bottom end of the threaded rod A is rotatably connected to the inner wall of the lifting groove via a bearing. A sliding groove is formed at the top of the threaded rod A. A threaded sleeve A is threadedly connected to the surface of the threaded rod A. A lifting sleeve is fixedly connected to the outer side of the threaded sleeve A. The top of the lifting sleeve is fixedly connected to the bottom of the circular outer shell. A telescopic rod is slidably connected to the inner wall of the sliding groove. The top of the telescopic rod movably penetrates the bottom of the circular outer shell and is fixedly connected to a drive bevel gear. The two ends of the circular outer shell are... A fixed sleeve is fixedly connected through the fixed sleeve. The inner wall of the fixed sleeve is rotatably connected to a bidirectional threaded rod via a bearing. A driven bevel gear is fixedly connected to the smooth surface of the bidirectional threaded rod. The top of the driven bevel gear meshes with the bottom of the driven bevel gear. Threaded sleeves B are threaded to both ends of the bidirectional threaded rod. The outer end of the threaded sleeve B movably penetrates the inner wall of the fixed sleeve. A guide groove is provided on the inner wall of the fixed sleeve. The outer side of the threaded sleeve B is slidably connected to the inner wall of the guide groove via a guide block. The two ends of the threaded sleeve B are fixedly connected to the ends of the fixed traction frame.

[0007] As a further description of the above technical solution: the bottom end of the traction rope is fixedly connected to a stud, the top of the grip handle is provided with a threaded groove, and the surface of the stud is threadedly connected to the inner wall of the threaded groove.

[0008] As a further description of the above technical solution: the guide block is rectangular, and the bottom of the guide block is fixedly connected to the outside of the threaded sleeve B.

[0009] As a further description of the above technical solution: a limiting strip is fixedly connected to the outer surface of the telescopic rod, a limiting groove is formed on the inner wall of the sliding groove, and the outer side of the limiting strip is slidably connected to the inner wall of the limiting groove.

[0010] As a further description of the above technical solution: the surface of the grip handle is provided with anti-slip texture.

[0011] As a further description of the above technical solution: a connecting block is fixedly connected to the outer side of the threaded sleeve A, a connecting groove is opened on the inner wall of the lifting groove, and the outer side of the connecting block is slidably connected to the inner wall of the connecting groove.

[0012] As a further description of the above technical solution: a worm gear is fixedly connected to the surface of the threaded rod A, an extension sleeve is fixedly connected through and to the outer side of the support rod, a worm is rotatably connected through and to the end of the extension sleeve, a knob is fixedly connected to the end of the worm, and the inner side of the worm meshes with the inner side of the worm gear.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the height and shoulder distance adjustment mechanism is set up, and the traction frame is synchronously widened when raised and synchronously narrowed when lowered through the transmission of worm gear, bevel gear and bidirectional threaded rod. It can accurately adapt to short people with narrow shoulders, the adjustment operation is convenient, the limit structure ensures stable operation, and improves adaptability and stability.

[0014] 2. In this utility model, the grip handle is made detachable by means of a threaded connection, which facilitates replacement and maintenance. Its surface anti-slip texture enhances the grip firmness and prevents slipping during use, which not only improves the safety of use, but also meets the grip needs of different users and optimizes the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of an upper limb traction device for fitness proposed in this utility model; Figure 2 This is a front sectional view of the upper limb traction device for fitness proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the stud and grip handle of the fitness upper limb traction device proposed in this utility model after disassembly. Figure 4 This utility model proposes an upper limb traction device for fitness. Figure 2 Enlarged view of point A in the middle; Figure 5 This utility model proposes an upper limb traction device for fitness. Figure 2 Enlarged view at point B in the middle; Figure 6 This is a schematic diagram of the meshing of the worm gear and worm wheel in the height and shoulder distance adjustment mechanism of the upper limb traction device for fitness proposed in this utility model.

[0016] Legend: 1. Support rod; 2. Lifting sleeve; 3. Circular outer shell; 4. Fixed traction frame; 5. Handle; 6. Height and shoulder distance adjustment mechanism; 601. Threaded rod A; 602. Lifting groove; 603. Threaded sleeve A; 604. Extension sleeve; 605. Driving bevel gear; 606. Driven bevel gear; 607. Bidirectional threaded rod; 609. Threaded sleeve B; 6010. Guide block; 6011. Guide groove; 6012. Worm gear; 6013. Worm wheel; 6014. Knob; 6015. Telescopic rod; 6016. Limiting strip; 6017. Fixing sleeve; 7. Traction rope; 8. Stud; 9. Threaded groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 The present invention provides an embodiment of an upper limb traction device for fitness, comprising a support rod 1, a lifting sleeve 2 at the top of the support rod 1, a circular outer shell 3 fixedly connected to the top of the lifting sleeve 2, so that the circular outer shell 3 rises and falls synchronously with the lifting sleeve 2, a fixed traction frame 4 is respectively provided at both ends of the circular outer shell 3, and a traction rope 7 is fixedly connected to both ends of the fixed traction frame 4 to realize the transmission of traction force, and a handle 5 is detachably connected to the end of the traction rope 7 for easy disassembly and replacement, and a height and shoulder distance adjustment mechanism 6 is provided on the support rod 1 for adjusting the height of the device and the distance between the traction frame.

[0019] Reference Figure 2 , Figure 4 , Figure 5 The height and shoulder distance adjustment mechanism 6 includes a threaded rod A601. A lifting groove 602 is provided at the top of the support rod 1 to provide installation space for the threaded rod A601. The bottom end of the threaded rod A601 is rotatably connected to the inner wall of the bottom of the lifting groove 602 via a bearing, allowing the threaded rod A601 to rotate flexibly. A sliding groove is provided at the top of the threaded rod A601 to provide sliding space for the telescopic rod 6015. A threaded sleeve A603 is threadedly connected to the surface of the threaded rod A601, realizing threaded transmission to drive lifting. A lifting sleeve 2 is fixedly connected to the outer side of the threaded sleeve A603, driving the lifting sleeve 2 to move synchronously. The top of the lifting sleeve 2 is fixedly connected to the bottom of the circular outer shell 3, driving the circular outer shell 3 to rise and fall synchronously. A connecting block is fixedly connected to the outer side of the threaded sleeve A603. The inner wall of the lifting groove 602 is provided with... The connecting block has a connecting groove, and the outer side of the connecting block is slidably connected to the inner wall of the connecting groove, restricting the rotation of the threaded sleeve A603 to only axial movement. The inner wall of the sliding groove is slidably connected to a telescopic rod 6015, allowing the telescopic rod 6015 to extend and retract along the sliding groove. The top end of the telescopic rod 6015 moves through the bottom of the circular outer shell 3 and is fixedly connected to an active bevel gear 605, driving the active bevel gear 605 to rise and fall synchronously. The two ends of the circular outer shell 3 are respectively connected to fixed sleeves 6017, providing installation support for the bidirectional threaded rod 607. The outer surface of the telescopic rod 6015 is fixedly connected to a limiting strip 6016. The inner wall of the sliding groove has a limiting groove 6011, and the outer side of the limiting strip 6016 is slidably connected to the inner wall of the limiting groove 6011, ensuring that the telescopic rod 6015 rotates synchronously with the threaded rod A601.

[0020] Reference Figure 4 , Figure 5 The inner wall of the fixed sleeve 6017 is rotatably connected to a bidirectional threaded rod 607 via bearings, allowing the bidirectional threaded rod 607 to rotate stably. A driven bevel gear 606 is fixedly connected to the smooth surface of the bidirectional threaded rod 607. The top of the driving bevel gear 605 meshes with the bottom of the driven bevel gear 606, realizing power transmission and changing the transmission direction. Threaded sleeves B609 are threadedly connected to both ends of the bidirectional threaded rod 607, driving the threaded sleeves B609 to move relative to or towards each other. The outer end of the threaded sleeve B609 movably penetrates the inner wall of the fixed sleeve 6017, facilitating threaded movement. The threaded sleeve B609 extends or retracts. The inner wall of the fixed sleeve 6017 is provided with a guide groove. The outer side of the threaded sleeve B609 is slidably connected to the inner wall of the guide groove through the guide block 6010, which restricts the rotation of the threaded sleeve B609 and allows it to move only axially. The guide block 6010 is rectangular, and the bottom of the guide block 6010 is fixedly connected to the outer side of the threaded sleeve B609, so that the guide block 6010 and the threaded sleeve B609 move synchronously. The two ends of the threaded sleeve B609 are respectively fixedly connected to the ends of the fixed traction frame 4, which drives the fixed traction frame 4 to adjust the spacing synchronously.

[0021] Reference Figure 5 The bottom end of the traction rope 7 is fixedly connected to a stud 8, and the top of the grip handle 5 is provided with a threaded groove 9. The surface of the stud 8 is threadedly connected to the inner wall of the threaded groove 9 to achieve a detachable connection. The surface of the grip handle 5 is provided with anti-slip texture to increase hand friction and prevent slipping.

[0022] Reference Figure 6 A worm gear 6013 is fixedly connected to the surface of the threaded rod A601, driving the threaded rod A601 to rotate synchronously. An extension sleeve 604 is fixedly connected through the outer side of the support rod 1 to provide mounting support for the worm 6012. The end of the extension sleeve 604 is rotatably connected to the worm 6012, allowing the worm 6012 to rotate flexibly. A knob 6014 is fixedly connected to the end of the worm 6012 for easy manual operation to drive the worm 6012. The inner side of the worm 6012 meshes with the inner side of the worm gear 6013 to achieve speed reduction transmission and improve adjustment stability.

[0023] Working principle: Before use, short people with narrow shoulders need to adjust the device according to their height and shoulder width. Turning knob 6014 drives the worm gear 6012 to rotate. Because the worm gear 6012 meshes with the worm wheel 6013 on the surface of the threaded rod A601, the rotation of the worm gear 6012 drives the worm wheel 6013 to rotate synchronously with the threaded rod A601. When the threaded rod A601 rotates, the threaded sleeve A603 on its surface moves axially along the threaded rod A601 under the sliding limit action of the connecting block and the connecting groove. If knob 6014 is turned clockwise, the threaded sleeve A603 drives the lifting sleeve 2 and the circular outer shell 3 to move upward. The telescopic rod 6015 in the top groove of the threaded rod A601 rises synchronously with the circular outer shell 3. The driving bevel gear 605 at the top of the telescopic rod 6015 drives the driven bevel gear 606 that meshes with it to rotate. The driven bevel gear 606 drives the bidirectional threaded rod 607 to rotate in the fixed sleeve 6017. When the bidirectional threaded rod 607 rotates, the threaded sleeves B609 at both ends move outward along the axial direction of the bidirectional threaded rod 607 under the sliding limit action of the rectangular guide block 6010 and the guide groove 6011, thereby pushing the fixed traction frame 4 to adjust the width. After adjusting to a suitable height and shoulder width, the knob 6014 is stopped from rotating.

[0024] If the user is short and has narrow shoulders, turn knob 6014 counterclockwise. The worm gear 6012 drives the worm wheel 6013 and threaded rod A601 to rotate in the opposite direction. The threaded sleeve A603 drives the lifting sleeve 2 and the circular outer shell 3 to move downwards. The telescopic rod 6015 descends synchronously with the circular outer shell 3. The driving bevel gear 605 drives the driven bevel gear 606 to rotate in the opposite direction. The bidirectional threaded rod 607 rotates in the opposite direction, causing the threaded sleeve B609 to move inwards. The fixed traction frame 4 is narrowed until it fits the user's body shape. After adjustment, the user holds the grip handle 5 with anti-slip texture and stretches the traction rope 7 with their arms to perform upper limb traction exercises. If the height and shoulder width need to be finely adjusted during the exercise, the above knob 6014 rotation operation can be repeated. After use, turn knob 6014 in the opposite direction to reset the device. If the grip handle 5 needs to be replaced or disassembled, it can be achieved by rotating the grip handle 5 to separate the stud 8 from the threaded groove 9.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fitness upper limb traction device, comprising a support rod (1), characterized in that: The top of the support rod (1) is provided with a lifting sleeve (2), and the top of the lifting sleeve (2) is fixedly connected with a circular shell (3). The two ends of the circular shell (3) are respectively provided with fixed traction frames (4), and the two ends of the fixed traction frames (4) are respectively fixedly connected with traction ropes (7). The end of the traction ropes (7) is detachably connected with a grip handle (5). The support rod (1) is provided with a height and shoulder distance adjustment mechanism (6). The height and shoulder distance adjustment mechanism (6) includes a threaded rod A (601), a lifting groove (602) is provided at the top of the support rod (1), the bottom end of the threaded rod A (601) is rotatably connected to the bottom inner wall of the lifting groove (602) through a bearing, a sliding groove is provided at the top of the threaded rod A (601), a threaded sleeve A (603) is threadedly connected to the surface of the threaded rod A (601), a lifting sleeve (2) is fixedly connected to the outside of the threaded sleeve A (603), the top of the lifting sleeve (2) is fixedly connected to the bottom of the circular outer shell (3), a telescopic rod (6015) is slidably connected to the inner wall of the sliding groove, the top of the telescopic rod (6015) moves through the bottom of the circular outer shell (3) and is fixedly connected to a drive bevel gear (605), and the two ends of the circular outer shell (3) respectively pass through A fixed sleeve (6017) is fixedly connected to the fixed sleeve (6017). The inner wall of the fixed sleeve (6017) is rotatably connected to a bidirectional threaded rod (607) via a bearing. A driven bevel gear (606) is fixedly connected to the smooth surface of the bidirectional threaded rod (607). The top of the driving bevel gear (605) meshes with the bottom of the driven bevel gear (606). Threaded sleeves B (609) are threadedly connected to both ends of the bidirectional threaded rod (607). The outer end of the threaded sleeve B (609) movably penetrates the inner wall of the fixed sleeve (6017). A guide groove is provided on the inner wall of the fixed sleeve (6017). The outer side of the threaded sleeve B (609) is slidably connected to the inner wall of the guide groove via a guide block (6010). The two ends of the threaded sleeve B (609) are fixedly connected to the ends of the fixed traction frame (4).

2. The upper limb traction device for fitness according to claim 1, characterized in that: The bottom end of the traction rope (7) is fixedly connected to a stud (8), and the top of the grip handle (5) is provided with a threaded groove (9). The surface of the stud (8) is threadedly connected to the inner wall of the threaded groove (9).

3. The upper limb traction device for fitness according to claim 1, characterized in that: The guide block (6010) is rectangular, and the bottom of the guide block (6010) is fixedly connected to the outside of the threaded sleeve B (609).

4. The upper limb traction device for fitness according to claim 1, characterized in that: The outer surface of the telescopic rod (6015) is fixedly connected to a limiting strip (6016), and the inner wall of the slide groove is provided with a limiting groove (6011). The outer side of the limiting strip (6016) is slidably connected to the inner wall of the limiting groove (6011).

5. The upper limb traction device for fitness according to claim 1, characterized in that: The surface of the grip handle (5) is provided with anti-slip texture.

6. The upper limb traction device for fitness according to claim 1, characterized in that: A connecting block is fixedly connected to the outer side of the threaded sleeve A (603), and a connecting groove is provided on the inner wall of the lifting groove (602). The outer side of the connecting block is slidably connected to the inner wall of the connecting groove.

7. The upper limb traction device for fitness according to claim 1, characterized in that: A worm gear (6013) is fixedly connected to the surface of the threaded rod A (601). An extension sleeve (604) is fixedly connected through the outer side of the support rod (1). A worm (6012) is rotatably connected through the end of the extension sleeve (604). A knob (6014) is fixedly connected to the end of the worm (6012). The inner side of the worm (6012) meshes with the inner side of the worm gear (6013).

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