An adjustable arm strengthener

Abstract

The utility model belongs to arm strength device technical field, especially relates to a adjustable arm strength device, including main spring, the both ends of main spring are provided with mounting rod respectively, be provided with the handle for the user's grip on mounting rod, be provided with mounting hole on handle, mounting rod is passed into mounting hole and is connected with handle sliding, be provided with at least two positioning holes on mounting rod, positioning hole sets gradually along mounting rod extension direction, be provided with elastic buckle on handle, elastic buckle and different positioning hole cooperation can make handle fixed on different positions of mounting rod, elastic buckle can be separated from positioning hole, thereby make handle can slide with mounting rod, be provided with locking piece on handle activity, be provided with limiting portion on locking piece, limiting portion can abut on elastic buckle and make elastic buckle and positioning hole keep cooperation, the utility model discloses the purpose lies in providing the adjustable arm strength device of stable installation and the user's exercise of convenient use.

Description

Technical Field

[0001] This utility model belongs to the field of arm strength training technology, and specifically relates to an adjustable arm strength training device. Background Technology

[0002] Arm strength trainers, also known as grip strength bars, allow fitness enthusiasts to exercise by controlling the bending of springs through the grips, thereby strengthening arm and chest muscles, and also assisting in strengthening wrist muscles.

[0003] Traditional arm exercisers mostly rely on a handle to control the bending of a spring for exercise. To make arm exercisers more convenient for different users, some arm exercisers allow adjustment of the relative position of the handle and the spring. For example, Chinese utility model patent application CN202322824668.5 discloses a multifunctional arm exerciser, which includes a spring and connecting rods connected to both ends of the spring, as well as a handle sleeved on the two connecting rods. The handle has a button with a positioning pin, and the end of the positioning pin has a positioning head. The two connecting rods have multiple axially arranged stop holes, which are connected by a strip-shaped through groove. The outer end of the connecting rod is recessed along the axial direction to form a guide groove. The bottom of the inner end of the guide groove has a through hole, which is connected to the strip-shaped through groove. When adjusting the position of the handle, the positioning pin slides to the through hole of the guide groove and is limited to prevent the handle from detaching from the connecting rod. When disassembling the handle, the positioning head of the positioning pin enters the guide groove through the through hole and slides out of the connecting rod along the guide groove, separating the handle from the connecting rod.

[0004] During use, the buttons are easily accidentally pressed, causing the positioning head to detach from the gear hole. At this time, the handle is prone to sliding relative to the connecting rod, affecting the normal use and exercise of the arm strength trainer. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable arm strength trainer that is stable to install and convenient for users to exercise.

[0006] The purpose of this utility model is achieved as follows:

[0007] An adjustable arm strength trainer includes a main spring with mounting rods at both ends. Each mounting rod has a handle for the user to grip, and the handle has mounting holes. The mounting rods pass through the mounting holes and are slidably connected to the handle. The mounting rods have at least two positioning holes arranged sequentially along the extension direction of the mounting rods. The handle has spring-loaded buckles that engage with different positioning holes to fix the handle at different positions on the mounting rods. The spring-loaded buckles can disengage from the positioning holes, allowing the handle to slide relative to the mounting rods.

[0008] A locking element is movably provided on the grip, and a limiting part is provided on the locking element. The limiting part can abut against the spring buckle and keep the spring buckle in cooperation with the positioning hole.

[0009] The present invention is further configured such that: a positioning groove is provided on the grip or spring buckle, and the locking member cooperates with the positioning groove to fix the locking member and the grip relatively, and keep the limiting part close to the spring buckle; under the action of external force, the locking member can disengage from the positioning groove, and the locking member and the grip can move relative to each other.

[0010] The present invention is further configured such that: the side of the snap fastener and / or the positioning hole is provided with an inclined guide surface; the control limiting part moves away from the snap fastener and drives the handle with external force, so that the snap fastener can disengage from the positioning hole under the guidance of the guide surface, thereby allowing the handle to move relative to the mounting rod.

[0011] The present invention is further configured such that the spring buckle and the grip are integrated, the spring buckle includes an elastic arm and a positioning protrusion adapted to the positioning hole, and the elastic arm can drive the positioning protrusion to engage or disengage from the positioning hole.

[0012] The present invention is further configured such that: the locking member is rotatably connected to the handle, and the locking member is also provided with a clearance groove, the limiting part and the clearance groove are arranged circumferentially along the rotation direction of the locking member; the locking member is controlled to rotate relative to the handle, the limiting part can move away from the spring buckle, and the clearance groove moves to the side of the spring buckle, the spring buckle can move towards the clearance part and disengage the spring buckle from the positioning hole.

[0013] The present invention is further configured such that: the locking member is provided with an installation cavity, the limiting part and the clearance groove are both provided on the inner wall of the installation cavity, and the spring buckle is provided in the installation cavity and can cooperate with the limiting part and the clearance groove respectively.

[0014] The present invention is further configured such that: the grip is provided with a first indicator for indicating the position of the snap fastener, and the locking member is provided with a second indicator for indicating the position of the limiting part.

[0015] The present invention is further configured such that: the grip is provided with a threaded portion, and the locking member is threadedly connected to the threaded portion; the locking member is controlled to rotate relative to the grip, the limiting portion rotates toward the side of the spring buckle and rotates to the side of the spring buckle, or the limiting portion moves axially along the threaded portion and moves away from the spring buckle.

[0016] The present invention is further configured such that: a guide groove is provided on the mounting rod, and a guide protrusion adapted to the guide groove is provided on the handle; the handle is controlled to move along the axial direction of the mounting rod, and the guide protrusion and the guide protrusion can guide the movement of the handle and the snap fastener, so that the snap fastener can move sequentially to one side of each positioning hole.

[0017] The present invention is further configured such that: a limiting wall is provided at one end of the mounting rod near the main spring, a limiting block is also fixedly provided on the mounting rod, a pressing surface is provided on the handle, the pressing surface can abut against the limiting block and prevent the handle from separating from the mounting rod, a movable groove is provided on the side wall of the mounting hole, and the pressing surface is provided on the side of the mounting hole and located at the end of the movable groove.

[0018] The advantages of this utility model compared to the prior art are:

[0019] 1. In this utility model, the handle is fixed to different positions on the mounting rod by engaging with different positioning holes using a spring-loaded buckle. Users can adjust the grip's position on the mounting rod to regulate the training intensity of the arm exerciser, making it convenient for different users. The locking mechanism ensures the spring-loaded buckle and positioning holes remain engaged, preventing the buckle from snapping shut during use. This promotes stable installation of the handle and mounting rod, facilitating user exercise. Furthermore, this structure prevents the handle from rapidly rebounding due to relative movement between the handle and mounting rod, avoiding potential accidents and improving the safety of the arm exerciser.

[0020] 2. The positioning groove in this utility model facilitates the fixed installation of the locking part and the handle, prevents the spring buckle from separating from the positioning hole during the use of the arm strength exerciser, and is conducive to the stable installation of the handle and the mounting rod, making it convenient for users to use the arm strength exerciser for exercise.

[0021] 3. The guide surface in this invention facilitates the automatic disengagement of the spring clip from the positioning hole. During adjustment of the arm exerciser, the user does not need to directly drive the spring clip, making it convenient for adjustment. The integrated spring clip and handle not only facilitate stable installation of the spring clip but also reduce the number of parts in the arm exerciser, simplifying assembly and production.

[0022] 4. The rotating locking mechanism in this invention facilitates user control. Because the relative rotation of the locking mechanism and the handle allows the clearance groove to move to the spring clip side, and the locking mechanism and spring clip move in opposite directions, the spring clip will not drive the locking mechanism and handle to rotate relative to each other during use. This promotes stable installation of the locking mechanism and handle, preventing the spring clip from disengaging from the positioning hole during use, and ensuring stable installation of the handle and mounting rod. The mounting cavity allows the spring clip to be concealed during adjustment, preventing debris from affecting its disengagement from the positioning hole and reducing aging and damage, thus extending the lifespan of the arm exerciser. The first and second indicator sections allow users to easily understand the relative positions of the spring clip and the limiting part, facilitating user control of the engagement or disengagement of the limiting part and the spring clip, and allowing users to adjust the relative positions of the handle and mounting rod, ultimately facilitating arm exerciser adjustment.

[0023] 5. The threaded locking component and handle in this utility model facilitate the disassembly and installation of the locking component, and facilitate the assembly and production of the arm strength device.

[0024] 6. The guide groove and guide protrusion in this invention facilitate stable sliding between the handle and the mounting rod, preventing misalignment of the spring clip and positioning hole during handle adjustment, which could affect the fixed installation of the handle and mounting rod, and making the adjustment of the arm exerciser convenient. The limiting wall and limiting block help maintain the connection between the handle and the mounting rod, preventing accidental detachment of the handle and mounting rod during use, and avoiding the mounting rod rebounding and injuring the user, thus improving the safety of the arm exerciser. The movable groove allows the end of the mounting rod to pass through the mounting hole, which helps extend the range of motion of the handle on the mounting rod, thereby reducing the minimum training intensity of the arm exerciser. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model;

[0026] Figure 2 This is a partial cross-sectional view of Embodiment 1 of this utility model;

[0027] Figure 3 This is a cross-sectional view of Embodiment 1 of this utility model;

[0028] Figure 4 This is a partial explosion diagram of Embodiment 1 of this utility model;

[0029] Figure 5 This is a partial structural schematic diagram of the main spring and mounting rod in Embodiment 1 of this utility model;

[0030] Figure 6 This is one of the structural schematic diagrams of the handle in Embodiment 1 of this utility model;

[0031] Figure 7 This is the second schematic diagram of the grip structure in Embodiment 1 of this utility model;

[0032] Figure 8 This is a schematic diagram of the locking component in Embodiment 1 of this utility model;

[0033] Figure 9 This is a partial sectional view of Embodiment 2 of this utility model;

[0034] Figure 10 This is a schematic diagram of the grip structure in Embodiment 2 of this utility model;

[0035] Figure 11 This is a cross-sectional view of the locking component in Embodiment 2 of this utility model.

[0036] The labels in the diagram have the following meanings: 1-Main spring; 11-Mounting rod; 12-Positioning hole; 13-Guide groove; 14-Limiting wall; 15-Fixing hole; 16-Limiting block; 2-Grip; 21-Mounting hole; 22-Guide protrusion; 23-Side flange; 24-Hinge groove; 25-Spring buckle; 251-Elastic arm; 252-Positioning protrusion; 253-Positioning groove; 254-Guide surface; 26-Moving groove; 27-Firming surface; 28-First indicator part; 29-Threaded part; 3-Locking element; 31-Mounting cavity; 32-Limiting part; 33-Clearing groove; 34-Second indicator part; 35-Internal thread. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0038] See Figures 1 to 11 As shown, an adjustable arm exerciser includes a main spring 1, with mounting rods 11 at both ends of the main spring 1. A handle 2 for the user to grip is mounted on each mounting rod 11. The handle 2 has mounting holes 21, through which the mounting rods 11 pass and slidably connect with the handle 2. At least two positioning holes 12 are provided on the mounting rods 11, arranged sequentially along the extension direction of the mounting rods 11. A spring clip 25 is provided on the handle 2. The spring clip 25 engages with different positioning holes 12 to fix the handle 2 at different positions on the mounting rod 11. The spring clip 25 can disengage from the positioning holes 12, allowing the handle 2 to slide relative to the mounting rod 11. In this structure, the spring clip 25 engages with different positioning holes 12 to fix the handle 2 at different positions on the mounting rod 11. Users can adjust the mounting position of the handle 2 on the mounting rod 11 to adjust the training intensity of the arm exerciser, making it convenient for different users.

[0039] A locking element 3 is movably mounted on the handle 2. The locking element 3 has a limiting part 32, which abuts against the spring buckle 25 and keeps the spring buckle 25 engaged with the positioning hole 12. The locking element 3 keeps the spring buckle 25 engaged with the positioning hole 12, preventing the spring buckle 25 from misaligning with the positioning hole 12 during use. This facilitates the stable installation of the handle 2 and the mounting rod 11, making it convenient for users to exercise with the arm strength device. Furthermore, this structure prevents the handle 2 from rapidly rebounding due to relative movement between the handle 2 and the mounting rod 11, thus avoiding accidents and improving the safety of the arm strength device.

[0040] The spring-loaded buckle 25 of this invention is a deformable or displaceable latch. During use, the spring-loaded buckle 25 can engage or disengage with the positioning hole 12 under external force. The spring-loaded buckle 25 may include a detachable ball and a spring. Preferably, the spring-loaded buckle 25 and the handle 2 are integrally formed. The spring-loaded buckle 25 includes an elastic arm 251 and a positioning protrusion 252 adapted to the positioning hole 12. The elastic arm 251 can drive the positioning protrusion 252 to engage or disengage with the positioning hole 12. The integrally formed spring-loaded buckle 25 and handle 2 not only facilitate the stable installation of the spring-loaded buckle 25, but also reduce the number of parts in the arm exerciser, facilitating the assembly and production of the arm exerciser. The elastic arm 251 of this invention can drive the positioning protrusion 252 to engage with the positioning hole 12.

[0041] The limiting part 32 described in this utility model can directly abut against the spring buckle 25 and make the spring buckle 25 cooperate with the positioning hole 12. The limiting part 32 can also be set on one side of the spring buckle 25. When the spring buckle 25 is deformed by force, the spring buckle 25 can abut against the limiting part 32, thereby preventing the spring buckle 25 from separating from the positioning hole 12.

[0042] The grip 2 or spring buckle 25 is provided with a positioning groove 253. The locking member 3 cooperates with the positioning groove 253 to fix the locking member 3 and the grip 2 relatively, and keep the limiting part 32 close to the spring buckle 25. Under the action of external force, the locking member 3 can disengage from the positioning groove 253, and the locking member 3 and the grip 2 can move relative to each other. The setting of the positioning groove 253 facilitates the fixed installation of the locking member 3 and the grip 2, avoids the spring buckle 25 from disengaging from the positioning hole 12 during the use of the arm strength exerciser, and is conducive to the stable installation of the grip 2 and the mounting rod 11, making it convenient for users to use the arm strength exerciser for exercise.

[0043] In this utility model, an independent positioning part can be provided on the locking part 3. The positioning part cooperates with the positioning groove 253 to fix the locking part 3 and the handle 2 respectively. Preferably, the positioning groove 253 is provided on the spring buckle 25. The limiting part 32 cooperates with the positioning groove 253 to fix the locking part 3 and the handle 2 respectively. The limiting part 32 abuts against the positioning groove 253 and keeps the spring buckle 25 and the positioning hole 12 in cooperation.

[0044] The side of the snap fastener 25 and / or the positioning hole 12 is provided with an inclined guide surface 254, which facilitates the quick engagement or disengagement of the snap fastener 25 and the positioning hole 12.

[0045] If the spring clip 25 can automatically disengage from the positioning hole 12 under natural conditions, during the adjustment process of the arm strength device, the locking member 3 is first controlled to move and the limiting part 32 is moved away from the spring clip 25. At this time, the spring clip 25 will automatically disengage from the positioning hole 12. Then, the spring clip 25 is controlled to move to the other side of the positioning hole 12. Finally, the locking member 3 drives the spring clip 25 to cooperate with the positioning hole 12. At this time, the setting of the guide surface 254 can make the spring clip 25 quickly cooperate with the positioning hole 12.

[0046] If the spring clip 25 can automatically engage with the positioning hole 12 under natural conditions, during the adjustment of the arm exerciser, first control the movement of the locking member 3 and move the limiting part 32 away from the spring clip 25. Then, use external force to drive the handle 2 to move axially along the mounting rod 11. Under the guidance of the guide surface 254, the spring clip 25 can disengage from the positioning hole 12. Continue to control the movement of the handle 2 until the spring clip 25 moves to the other side of the positioning hole 12. The spring clip 25 will automatically engage with the positioning hole 12 under its own elasticity. At this time, the setting of the guide surface 254 can also make the spring clip 25 quickly engage with the positioning hole 12. During this adjustment process, the user does not need to directly drive the spring clip 25 to engage or disengage with the positioning hole 12, which makes it convenient for the user to adjust the arm exerciser.

[0047] The mounting rod 11 is provided with a guide groove 13, and the handle 2 is provided with a guide protrusion 22 that matches the guide groove 13. Controlling the handle 2 to move axially along the mounting rod 11, the guide protrusion 22 guides the movement of the handle 2 and the spring buckle 25, allowing the spring buckle 25 to move sequentially to one side of each positioning hole 12. The guide groove 13 and guide protrusion 22 facilitate stable sliding between the handle 2 and the mounting rod 11, preventing misalignment of the spring buckle 25 and the positioning hole 12 during handle 2 adjustment, thus ensuring the secure installation of the handle 2 and the mounting rod 11 and facilitating the adjustment of the arm strength device.

[0048] In this invention, a limiting wall 14 is provided at the end of the mounting rod 11 near the main spring 1, and a limiting block 16 is also fixedly provided on the mounting rod 11. A pressing surface 27 is provided on the handle 2, which abuts against the limiting block 16 and prevents the handle 2 from detaching from the mounting rod 11. The limiting wall 14 and the limiting block 16 help maintain the connection between the handle 2 and the mounting rod 11, preventing accidental detachment of the handle 2 from the mounting rod 11 during use, and avoiding the rebound of the mounting rod 11 that could injure the user, thus improving the safety of the arm strength device. A fixing hole 15 is provided on the side wall of the mounting rod 11, and the limiting block 16 is fixedly installed in the fixing hole 15.

[0049] Preferably, a movable groove 26 is provided on the side wall of the mounting hole 21, and a mating surface 27 is provided on the side of the mounting hole 21 and located at the end of the movable groove 26. The movable groove 26 allows the end of the mounting rod 11 to pass into the mounting hole 21, which helps to extend the range of motion of the grip 2 on the mounting rod 11, thereby reducing the minimum training intensity of the arm strength trainer.

[0050] The locking member 3 can be slidably disposed on the handle 2, the locking member 3 can also be rotatably disposed on the handle 2, and the locking member 3 can also be threadedly connected to the handle 2. Specifically, it has the following implementation methods:

[0051] Example 1

[0052] In this embodiment, the locking member 3 is rotatably connected to the handle 2. The locking member 3 is also provided with a clearance groove 33. The limiting part 32 and the clearance groove 33 are arranged circumferentially along the rotation direction of the locking member 3. By controlling the relative rotation of the locking member 3 and the handle 2, the limiting part 32 can move away from the spring buckle 25, and the clearance groove 33 can move to the side of the spring buckle 25. The spring buckle 25 can move into the clearance groove 33 and disengage from the positioning hole 12. The rotatably arranged locking member 3 is easy for the user to drive and control. In this structure, the movement directions of the locking member 3 and the spring buckle 25 are different. During the use of the arm strength exerciser, the spring buckle 25 will not be forced to drive the locking member 3 and the handle 2 to rotate relative to each other. This is conducive to the stable installation of the locking member 3 and the handle 2, and prevents the spring buckle 25 from disengaging from the positioning hole 12 during the use of the arm strength exerciser. This is also conducive to the stable installation of the handle 2 and the mounting rod 11.

[0053] Preferably, the locking member 3 is provided with a mounting cavity 31, and the limiting part 32 and the clearance groove 33 are both provided on the inner wall of the mounting cavity 31. The spring buckle 25 is disposed in the mounting cavity 31 and can cooperate with the limiting part 32 and the clearance groove 33 respectively. The setting of the mounting cavity 31 is conducive to the concealment of the spring buckle 25 during the adjustment of the arm strength device, avoiding the interference of debris on the disengagement of the spring buckle 25 from the positioning hole 12, and can reduce the aging and damage of the spring buckle 25, which is conducive to extending the service life of the arm strength device.

[0054] The handle 2 is provided with an annular hinge groove 24, which surrounds the outer periphery of the mounting cavity 31. The locking member 3 is annular and fitted into the hinge groove 24, and a retaining edge 23 is glued or ultrasonically welded to one side of the hinge groove 24. During the assembly of the arm strength device, the locking member 3 is first controlled to engage with the hinge groove 24, and then the retaining edge 23 is fixed to one side of the hinge groove 24 by gluing or ultrasonic welding. At this time, the limiting part 32 and the clearance groove 33 are only provided in the hinge groove 24, and prevent foreign objects from entering the clearance groove 33.

[0055] In this embodiment, the grip 2 is provided with a first indicator 28 for indicating the position of the snap 25, and the locking member 3 is provided with a second indicator 34 for indicating the position of the limiting part 32. The first indicator 28 and the second indicator 34 make it easy for the user to understand the relative position of the snap 25 and the limiting part 32, so that the user can control the engagement or disengagement of the limiting part 32 and the snap 25, and adjust the relative position of the grip 2 and the mounting rod 11, and adjust the arm strength trainer.

[0056] Example 2

[0057] In this embodiment, the handle 2 is provided with a threaded portion 29, and the locking member 3 is threadedly connected to the threaded portion 29. Controlling the relative rotation of the locking member 3 and the handle 2 causes the limiting portion 32 to rotate towards the side of the spring buckle 25 and to one side of the spring buckle 25; alternatively, the limiting portion 32 moves axially along the threaded portion 29 and away from the spring buckle 25. The threaded connection between the locking member 3 and the handle 2 facilitates the disassembly and installation of the locking member 3, and facilitates the assembly and production of the arm strength trainer.

[0058] In the plate embodiment, the locking member 3 is provided with a mounting cavity 31, and the mounting cavity 31 is provided with an internal thread 35 that connects with the threaded part 29. The limiting part 32 is the side wall of the mounting cavity 31.

[0059] Example 3

[0060] In this embodiment, the locking member 3 is slidably disposed on the grip 2, and the spring buckle 25 is disposed between the locking member 3 and the mounting rod 11. By controlling the sliding of the locking member 3, the locking member 3 can disengage from the side of the spring buckle 25 away from the mounting rod 11, thereby allowing the spring buckle 25 to move and disengage from the positioning hole 12. This structure is a simple mechanical structure. Although it is not specifically shown in the accompanying drawings, those skilled in the art can implement this technical solution based on their own knowledge.

[0061] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An adjustable arm strength trainer, comprising a main spring (1), with mounting rods (11) respectively provided at both ends of the main spring (1), and a handle (2) for the user to grip on the mounting rods (11), characterized in that: The grip (2) is provided with a mounting hole (21), and the mounting rod (11) passes through the mounting hole (21) and is slidably connected to the grip (2). The mounting rod (11) is provided with at least two positioning holes (12), and the positioning holes (12) are arranged sequentially along the extension direction of the mounting rod (11). The grip (2) is provided with a spring buckle (25). The spring buckle (25) cooperates with different positioning holes (12) to fix the grip (2) at different positions on the mounting rod (11). The spring buckle (25) can disengage from the positioning hole (12), so that the grip (2) can slide relative to the mounting rod (11). A locking member (3) is movably provided on the grip (2), and a limiting part (32) is provided on the locking member (3). The limiting part (32) can abut against the spring buckle (25) and keep the spring buckle (25) in cooperation with the positioning hole (12).

2. The adjustable arm strength trainer according to claim 1, characterized in that: The grip (2) or spring buckle (25) is provided with a positioning groove (253). The locking member (3) cooperates with the positioning groove (253) to fix the locking member (3) and the grip (2) relatively, and keep the limiting part (32) close to the spring buckle (25). Under the action of external force, the locking member (3) can disengage from the positioning groove (253) and allow the locking member (3) and the grip (2) to move relative to each other.

3. An adjustable arm strength trainer according to claim 1 or 2, characterized in that: The snap fastener (25) and / or the positioning hole (12) are provided with an inclined guide surface (254); the control limit part (32) moves away from the snap fastener (25) and drives the handle (2) with external force, so that the snap fastener (25) can disengage from the positioning hole (12) under the guidance of the guide surface (254), thereby allowing the handle (2) to move relative to the mounting rod (11).

4. An adjustable arm strength trainer according to claim 3, characterized in that: The spring clip (25) is integrated with the grip (2). The spring clip (25) includes an elastic arm (251) and a positioning protrusion (252) adapted to the positioning hole (12). The elastic arm (251) can drive the positioning protrusion (252) to engage or disengage from the positioning hole (12).

5. An adjustable arm strength trainer according to claim 1, 2, or 4, characterized in that: The locking member (3) is rotatably connected to the handle (2). The locking member (3) is also provided with a clearance groove (33). The limiting part (32) and the clearance groove (33) are circumferentially arranged along the rotation direction of the locking member (3). By controlling the relative rotation of the locking member (3) and the handle (2), the limiting part (32) can move away from the spring buckle (25) and the clearance groove (33) can move to the side of the spring buckle (25). The spring buckle (25) can move towards the clearance part and disengage the spring buckle (25) from the positioning hole (12).

6. An adjustable arm strength trainer according to claim 5, characterized in that: The locking member (3) is provided with an installation cavity (31), and the limiting part (32) and the clearance groove (33) are both provided on the inner wall of the installation cavity (31). The spring buckle (25) is provided in the installation cavity (31) and can cooperate with the limiting part (32) and the clearance groove (33) respectively.

7. An adjustable arm strength trainer according to claim 6, characterized in that: The grip (2) is provided with a first indicator (28) for indicating the position of the snap (25), and the locking member (3) is provided with a second indicator (34) for indicating the position of the limiting part (32).

8. An adjustable arm strength trainer according to claim 1, 2, or 4, characterized in that: The grip (2) is provided with a threaded part (29), and the locking part (3) is threadedly connected to the threaded part (29); the locking part (3) is controlled to rotate relative to the grip (2), the limiting part (32) rotates to the side of the spring buckle (25) and rotates to the side of the spring buckle (25), or the limiting part (32) moves axially along the threaded part (29) and away from the spring buckle (25).

9. An adjustable arm strength trainer according to claim 1, 2, 4, 6, or 7, characterized in that: The mounting rod (11) is provided with a guide groove (13), and the handle (2) is provided with a guide protrusion (22) that matches the guide groove (13). The handle (2) is controlled to move axially along the mounting rod (11). The guide protrusion (22) and the guide protrusion (22) can guide the movement of the handle (2) and the spring buckle (25), so that the spring buckle (25) can move sequentially to one side of each positioning hole (12).

10. An adjustable arm strength trainer according to claim 9, characterized in that: The mounting rod (11) is provided with a limiting wall (14) near the end of the main spring (1). A limiting block (16) is also fixedly provided on the mounting rod (11). A pressing surface (27) is provided on the handle (2). The pressing surface (27) can abut against the limiting block (16) and prevent the handle (2) from separating from the mounting rod (11). A movable groove (26) is provided on the side wall of the mounting hole (21). The pressing surface (27) is provided on the side of the mounting hole (21) and located at the end of the movable groove (26).

Images