Hand exercise device with adjustable balance weight

Abstract

The utility model discloses a hand exercise device with an adjustable balance weight, and relates to the field of fitness equipment. The hand exercise device capable of adjusting the balance weight comprises a fixed part and a rotating part, the fixed part is used for forming a path, and the rotating part rotates along the path. A plurality of balance weight parts are arranged on the rotating part, and balance weight adjustment is achieved through the following scheme that according to the scheme A, each balance weight part is detachably connected with the rotating part, or according to the scheme B, every two adjacent balance weight parts are detachably connected, and one balance weight part is detachably connected with the rotating part. According to the hand exercise device capable of adjusting the balance weight, the balance weight can be adjusted according to actual requirements, and therefore the use requirements of different crowds are met. In addition, various adjusting modes can be selected to adjust the balance weight, so that the adjusting modes are more flexible, simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of fitness equipment, in particular to a hand exercise device with adjustable counterweights. Background Art

[0002] With the progress of society, people's living standards are getting higher and higher. So people are gradually paying attention to health issues and starting to exercise. Due to the busy work schedule, more people choose to exercise at home. Therefore, various exercise equipment have begun to enter thousands of households. Among these exercise equipment, there are those that exercise the whole body, and those that exercise the arms, waist, back, legs, etc. Among them, those used to exercise hand strength include: Flying Rod, Arm Strengthener, Gyro Wrist Ball, etc. However, whether it is Flying Rod, Arm Strengthener, Gyro Wrist Ball, etc., they all have the following problems:

[0003] For beginners without a foundation in exercise, it's incredibly difficult to master. The gyroball, in particular, is nearly impossible for beginners to start and get going. Even with a starting aid, once the assistive start-up effect wears off, the gyroball won't continue spinning, thus negating the effectiveness of the exercise.

[0004] Therefore, hand exercise equipment with counterweights has appeared on the market. The main function of these equipment is to generate centrifugal force during the rotation process, making it easier and more convenient to start the equipment, so that novices and ordinary people can also use this equipment, rather than those who have a basic training foundation.

[0005] However, the weights of such hand exercise equipment are all fixed and cannot be adjusted according to the needs of the user, so that the user can only perform exercises with a single weight and cannot perform exercises with a variety of different weights. Utility Model Content

[0006] The present invention aims at solving the above problems and overcoming at least one of the drawbacks by providing a hand exercise device with adjustable counterweights.

[0007] The technical solutions adopted by this utility model are as follows:

[0008] A hand exercise device with adjustable counterweights includes a fixed portion and a rotating portion. The fixed portion is used to form a path, and the rotating portion rotates along the path. The rotating portion is provided with a plurality of counterweights. Counterweight adjustment is achieved through the following scheme:

[0009] Solution A: Each counterweight part is detachably connected to the rotating part.

[0010] In actual use, according to the needs of users, several counterweight parts are directly connected to the rotating part one by one to form an integral counterweight part.

[0011] or,

[0012] Solution B: Adjacent counterweight parts are detachably connected, and one of the counterweight parts is detachably connected to the rotating part.

[0013] In actual use, based on user needs, several counterweights are first connected to form a whole. Then, one of the counterweights in the whole is connected to the rotating part, thereby connecting the whole counterweight to the rotating part. Alternatively, one of the several counterweights is first connected to the rotating part as the first counterweight; then the second counterweight is connected to the first, the third counterweight is connected to the second, and so on, to form a whole counterweight.

[0014] Whether using Plan A or Plan B, several counterweights can be installed or removed according to actual user needs, thereby adjusting the number of counterweights to achieve the purpose of adjusting the counterweights, thereby meeting the needs of more different users for different exercise weights.

[0015] In one embodiment of the present invention, when the counterweight adjustment is achieved through scheme A, a first connecting portion is provided on each counterweight portion, and a plurality of second connecting portions are provided on the rotating portion. The plurality of first connecting portions correspond to the plurality of second connecting portions one by one and are detachably connected.

[0016] In actual use, by providing a plurality of second connection parts on the rotating part, it is convenient for the plurality of counterweight parts to be quickly installed or removed from the rotating part through their own first connection parts, thereby realizing the function of convenient adjustment of the counterweight.

[0017] In one embodiment of the present invention, when the counterweight adjustment is achieved through solution B, each counterweight portion is provided with a first connecting portion and a second connecting portion; adjacent first connecting portions and second connecting portions between adjacent counterweight portions are detachably connected;

[0018] The rotating part is provided with at least one first connecting part or second connecting part; the second connecting part or first connecting part of one of the plurality of counterweight parts is adapted to and detachably connected to the rotating part.

[0019] During actual use, the first of the plurality of counterweight parts is detachably connected to the corresponding second connection part on the rotating part through its first connection part.

[0020] Next, the second connection portion on the first counterweight portion is detachably connected to the first connection portion on the second counterweight portion.

[0021] Then, the second connecting portion on the second counterweight portion and the first connecting portion on the third counterweight portion are detachably connected.

[0022] Furthermore, when the first connecting portion replaces the second connecting portion on the rotating portion, the connection order of the first connecting portion and the second connecting portion can be interchanged.

[0023] When using Option B to adjust the counterweight, since the multiple counterweights are connected end-to-end, multiple counterweights can be removed at once, making counterweight adjustment faster. For example, if there are three counterweights connected to the rotating part and you want to remove two of them, you can simply disconnect the first counterweight from the second, and then remove the second and third counterweights together, without having to remove them one by one.

[0024] In one embodiment of the present invention, the first connection portion and the second connection portion are threadedly connected; the first connection portion is one of the stud and the screw hole, and the second connection portion is the other one;

[0025] or,

[0026] The first connecting portion and the second connecting portion are connected by a snap-fit connection; the first connecting portion is one of the snap-fit protrusion and the snap-fit recess, and the second connecting portion is the other one;

[0027] or,

[0028] It also includes a pin, the first connecting part and the second connecting part are plugged together to form a plug-in part, and the pin is inserted into the plug-in part; the first connecting part is one of the plug-in outside and the plug-in inside, and the second connecting part is the other one.

[0029] Whether it is a threaded connection, a snap connection, or a pin connection, the connection or disassembly between each other can be achieved simply, conveniently and quickly without the need for complicated operations.

[0030] In one embodiment of the present invention, a weight cavity is provided inside the weight portion, and weights of different weights are placed in the weight cavity.

[0031] In actual use, based on Plan A or Plan B, more precise weight adjustment can be achieved by choosing to place or not place weights of different amounts in the weight cavity.

[0032] Therefore, a hand exercise device with adjustable weights not only has multiple weight adjustment methods to choose from, but also has different adjustment precisions, thereby better meeting different usage requirements.

[0033] In one embodiment of the present invention, solution C is used to replace solution A and / or solution B;

[0034] Plan C: A counterweight cavity is provided inside the counterweight portion, and counterweight objects of different weights are arranged in the counterweight cavity.

[0035] In actual use, after solution C replaces the previous two solutions, the counterweight can be adjusted solely through solution C. That is, the counterweight can be adjusted by placing or not placing a counterweight in the counterweight cavity.

[0036] In one embodiment of the present invention, a grid is provided in the counterweight cavity, which divides the counterweight cavity into a plurality of spaces, in which counterweight objects are placed; the counterweight objects are counterweight blocks, counterweight liquid, or counterweight sand.

[0037] In actual use, the weight of the counterweight part itself can be adjusted by selectively placing or not placing counterweight objects in multiple spaces.

[0038] In one embodiment of the present invention, a cover portion is provided on one side of the counterweight cavity, and the cover portion is detachably connected to the counterweight portion.

[0039] In actual use, after the cover is installed, a closed space is formed in the counterweight cavity to prevent the counterweight from falling out of the counterweight cavity. The cover and the counterweight can be detachably connected by means of threads, buckles, etc.

[0040] In one embodiment of the present invention, a sealing portion adapted to the grille is provided on the cover portion.

[0041] When the balancing weight is balancing liquid or balancing sand, the sealing portion can play a sealing role, thereby preventing the balancing liquid or balancing sand from leaking.

[0042] In one embodiment of the present invention, a sealing portion made of soft rubber is provided on the side of the cover portion facing the grille. When the cover portion abuts the grille, the sealing portion is located between the two and the two squeeze the sealing portion.

[0043] In actual use, soft rubber materials are generally: silicone, TPE, TPR, latex, PE, rubber. Because soft rubber materials will deform after being squeezed, the deformed part will be squeezed into the gap of the joint, thereby preventing the balancing liquid or balancing sand from leaking out of the gap, thereby acting as a seal.

[0044] The beneficial effects of the present invention are as follows: a hand exercise device with adjustable counterweights can not only adjust the counterweights according to actual needs, thereby meeting the needs of different groups of people, but also can select a variety of adjustment methods to adjust the counterweights, making the adjustment method more flexible, simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 2 is a schematic structural diagram of a hand exercise device with adjustable weights in an embodiment.

[0046] Figure 2 Schematic diagram of an exploded structure of a hand exercise device with adjustable weights in an embodiment.

[0047] Figure 3 Schematic diagram of the connection between the counterweight part and the rotating part in the embodiment.

[0048] Figure 4 2 is a schematic structural diagram of the counterweight portion in the embodiment.

[0049] Figure 5 The structure of the cover portion in the embodiment is shown in FIG. Figure 1 .

[0050] Figure 6 The structure of the cover portion in the embodiment is shown in FIG. Figure 2 .

[0051] The reference numerals in the figures are:

[0052] 1. Fixed part; 2. Rotating part; 3. Hand-held part; 4. Counterweight part; 5. Cavity; 6. Roller; 8. Opening; 11. First connecting part; 12. Second connecting part; 13. Counterweight cavity; 14. Counterweight; 15. Grille; 16. Covering part; 17. Sealing part; 18. Groove. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0054] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0055] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings.

[0057] Example 1

[0058] like Figures 1 to 2 As shown, a hand exercise device with adjustable weights includes a fixed portion 1 and a rotating portion 2. The fixed portion 1 is used to form a path, and the rotating portion 2 is annular and rotates along the path. The diameter of the annular rotating portion 2 is approximately 25-30 cm. Therefore, the overall space occupied is significantly reduced compared to existing exercise equipment. This not only significantly reduces the requirements for the use scenario of a hand exercise device with adjustable weights, but also makes it easier and more convenient to pack, store, and transport.

[0059] Moreover, compared with the slender exercise equipment in the prior art, the circular ring structure is more resistant to pressure and collision, making the whole body less likely to be damaged.

[0060] The fixing part 1 is annular, with a hand-held part 3 in the middle or in its axial direction; both ends of the hand-held part 3 are fixedly connected to the fixing part 1. The hand-held part 3 is convenient for the user to hold, so that the user can exercise the hands more effectively.

[0061] A cavity 5 is provided inside the fixed part 1 and surrounds the center of the fixed part 1 . The cavity 5 is in the shape of a circular ring as a whole and provides a path for the rotation of the rotating part 2 .

[0062] An opening 8 is provided on one side of the fixing portion 1 away from its own center. The opening 8 extends around the circumference of the fixing portion 1 to form an overall annular opening 8 . The opening 8 connects the cavity 5 with the outside of the fixing portion 1 .

[0063] The provision of the opening 8 facilitates assembly during the production process, and the counterweight portion 4 can be easily passed through the opening 8, thereby being exposed outside the fixed portion 1. The generally circular opening 8 ensures that the counterweight portion 4 exposed outside the fixed portion 1 can smoothly rotate around the fixed portion 1, thereby allowing the counterweight portion 4 to continuously generate centrifugal force, thereby continuously driving the rotation of the rotating portion 2.

[0064] The rotating part 2 is accommodated in the cavity 5 , and a counterweight part 4 is fixedly or detachably connected to the outside of the rotating part 2 .

[0065] The detachable counterweight portion 4, after being separated from the rotating portion 2, can facilitate the storage and transportation of the entire unit. In addition, the rotating portion 2 is provided with a plurality of counterweight portions 4, each of which is detachably connected to the rotating portion 2 (not shown in the figure). In actual use, according to the needs of the user, the plurality of counterweight portions 4 are directly connected to the rotating portion 2 one by one, thereby forming a counterweight as a whole. Since the plurality of counterweight portions 4 are detachable, the plurality of counterweight portions 4 can be installed or removed according to the actual needs of the user, thereby adjusting the number of counterweight portions 4 and achieving the purpose of adjusting the counterweight, thereby meeting the needs of more different users.

[0066] Each counterweight 4 is provided with a first connection portion 11, and the rotating portion 2 is provided with a plurality of second connection portions 12. The plurality of first connection portions 11 corresponds to the plurality of second connection portions 12 and is detachably connected. In actual use, by providing multiple second connection portions 12 on the rotating portion 2, the plurality of counterweights 4 can be quickly installed or removed from the rotating portion 2 via their respective first connection portions 11, thereby facilitating the adjustment of the counterweight.

[0067] The first connection portion 11 and the second connection portion 12 are threadedly connected; the first connection portion 11 is one of the stud and the screw hole, and the second connection portion 12 is the other;

[0068] or,

[0069] The first connecting portion 11 and the second connecting portion 12 are connected by a snap fit; the first connecting portion 11 is one of the snap fit protrusion and the snap fit concave portion, and the second connecting portion 12 is the other;

[0070] or,

[0071] It also includes a pin, the first connection part 11 and the second connection part 12 are connected and the overlapping part of the two forms a plug-in part, and the pin is inserted into the plug-in part; the first connection part 11 is one of the two, plugging into the outside and plugging into the inside, and the second connection part 12 is the other one.

[0072] Whether it is a threaded connection, a snap connection, or a pin connection, the connection or disassembly between each other can be achieved simply, conveniently and quickly without the need for complicated operations.

[0073] In addition, a counterweight cavity 13 is provided inside the counterweight portion 4, and counterweights 14 of different weights are placed inside the counterweight cavity 13. During actual use, the counterweight cavity 13 can be used to place or not place counterweights 14 of different weights to achieve more precise counterweight adjustment. That is, when a single counterweight portion 4 is installed, it feels too heavy; when it is removed, it feels too light. In this case, by placing counterweights 14 of different weights inside the counterweight cavity 13, the weight of the counterweight portion 4 itself can be adjusted, thereby making the overall counterweight adjustment more precise. Therefore, a hand exercise device with adjustable counterweights can not only adjust the overall counterweight of the counterweight portion 4, but also locally adjust its internal weight to achieve different adjustment accuracies, thereby better meeting different usage requirements.

[0074] Reference Figure 4 The counterweight cavity 13 is provided with a partition 15, which divides the counterweight cavity 13 into a plurality of spaces. Each space contains a counterweight 14. The counterweight 14 may be a counterweight block, a counterweight liquid, or a counterweight sand. In actual use, the weight of the counterweight portion 4 can be adjusted by selectively placing or not placing the counterweight 14 in the plurality of spaces.

[0075] Reference Figure 5 A cover portion 16 is provided on one side of the counterweight cavity 13, and the cover portion 16 is detachably connected to the counterweight portion 4. In actual use, after the cover portion 16 is installed, a closed space is formed in the counterweight cavity 13, preventing the counterweight 14 from falling out of the counterweight cavity 13. The cover portion 16 and the counterweight portion 4 can be detachably connected by means of threads, snap fasteners, or other connection methods.

[0076] The cover portion 16 is provided with a sealing portion 17 adapted to the grating 15. When the ballast 14 is a ballast liquid or ballast sand, the sealing portion 17 can play a sealing role, thereby preventing the ballast liquid or ballast sand from leaking.

[0077] A sealing portion 17 made of a soft rubber material is provided on the side of the cover portion 16 facing the grille 15. This sealing portion 17 completely covers the side of the cover portion 16, or alternatively, its covering shape matches the end face of the grille 15 facing the cover portion 16. When the cover portion 16 and grille 15 abut, the sealing portion 17 is located between them, and the two squeeze the sealing portion 17. In actual use, the soft rubber material is generally made of silicone, TPE, TPR, latex, PE, or rubber. Since the soft rubber material deforms when squeezed, the deformed portion is squeezed into the gap at the joint, preventing the ballast liquid or sand from leaking out of the gap, thereby providing a seal.

[0078] Reference Figure 6A groove 18 corresponding to the grille 15 may be further provided on the side of the cover portion 16 facing the grille 15, and a sealing portion 17 is provided on the inner wall of the groove 18. When the cover portion 16 abuts against the grille 15, one end of the grille 15 is stuck in the groove 18 and squeezes the sealing portion 17, thereby forming a seal.

[0079] When the weight 14 is a weighted liquid, the weighted liquid is generally water, but may be other liquids. This allows the weighted hand exercise device to be transported or stored by first pouring out the water, thereby reducing its weight and making it easier to transport or store. When the weighted hand exercise device is needed, the water can be simply poured in, which is very convenient and simple.

[0080] The counterweight 4 passes through the opening 8 and is exposed outside the fixed portion 1. Placing the counterweight 4 outside the rotating portion 2 is easier to use and more easily drives the rotating portion 2 to rotate than placing it inside the rotating portion 2. The effect is particularly noticeable when the counterweight 4 is exposed outside the fixed portion 1.

[0081] When the counterweight 4 is swung, centrifugal force is generated and drives the rotating part 2 to rotate along the path in the cavity 5. At this time, the counterweight 4 itself will revolve around the circumference of the fixed part 1.

[0082] An accommodating chamber is provided on the inner wall of the cavity 5 , and a power assisting device is provided in the accommodating chamber; the power assisting device abuts against the outer wall surface of the rotating part 2 .

[0083] The power assist device includes a fixed shaft, both ends of which are fixed in the accommodating cavity, and a roller 6 is sleeved on the outer ring of the fixed shaft, and the roller 6 abuts against the outer wall surface of the rotating part 2.

[0084] or,

[0085] The power assist device includes a ball (not shown in the figure), which is accommodated in the accommodating cavity and abuts against the outer wall surface of the rotating part 2.

[0086] Whether it is the setting of the roller 6 or the setting of the ball, the contact area between the outer wall of the rotating part 2 and the inner wall of the cavity 5 can be reduced, thereby reducing the corresponding friction resistance, and then the rotating part 2 can rotate smoothly and fluently along the path in the cavity 5 when rotating.

[0087] During production, the fixed portion 1 and the handle portion 3 are integrally molded, and the entire assembly is divided into upper and lower sections. During assembly, the upper and lower sections are respectively placed over the upper and lower sides of the rotating portion 2 and secured together using clips or screws. The rotating portion 2 can be integrally molded separately or with the counterweight 4.

[0088] In actual use, the user first grasps the handheld portion 3 and then performs a small, circular shaking motion. Because the counterweight 4 is located outside the rotating portion 2, the counterweight 4 is swung, generating centrifugal force that drives the rotating portion 2 to rotate. At this point, the counterweight 4 itself orbits around the outside of the fixed portion 1. As the duration of this shaking motion increases, the user's hands become stronger.

[0089] Compared with existing exercise equipment, the presence of the weight portion 4 makes the hand exercise device with adjustable weights very easy to use, and can easily drive the rotating portion 2 to rotate. Even users with no exercise experience, or users with weak arm strength such as women and children, can easily rotate the rotating portion 2 and maintain its rotation, thereby achieving the effect of exercising the hands.

[0090] Example 2

[0091] The difference between this embodiment and embodiment 1 is that:

[0092] Not all of the counterweight parts 4 are directly and detachably connected to the rotating part 2 .

[0093] Reference Figure 3 , adjacent counterweight parts 4 are detachably connected, and one of the counterweight parts 4 is detachably connected to the rotating part 2.

[0094] In actual use, according to user needs, several counterweights 4 are first connected to each other to form a whole. Then, one of the counterweights 4 in the whole is connected to the rotating part 2, thereby connecting the whole counterweight to the rotating part 2. Alternatively, one of the several counterweights 4 is first connected to the rotating part 2 as the first counterweight 4; then the second counterweight 4 is connected to the first counterweight 4, and then the third counterweight 4 is connected to the second counterweight 4, and so on, to form a whole counterweight.

[0095] Among them, each counterweight part 4 is provided with a first connecting part 11 and a second connecting part 12; between adjacent counterweight parts 4, the adjacent first connecting parts 11 and second connecting parts 12 are detachably connected; for example, the first connecting part 11 of the previous counterweight part 4 is detachably connected to the second connecting part 12 of the next counterweight part 4.

[0096] The rotating part 2 is provided with at least one first connecting part 11 or second connecting part 12; the second connecting part 12 or first connecting part 11 of one of the counterweight parts 4 is adapted to and detachably connected to the rotating part 2.

[0097] During actual use, the first of the plurality of counterweights 4 is detachably connected to the corresponding second connection portion 12 on the rotating portion 2 via its first connection portion 11 .

[0098] Next, the second connection portion 12 on the first counterweight portion 4 and the first connection portion 11 on the second counterweight portion 4 are detachably connected.

[0099] Then, the second connection portion 12 on the second counterweight portion 4 and the first connection portion 11 on the third counterweight portion 4 are detachably connected.

[0100] Furthermore, when the first connecting portion 11 replaces the second connecting portion 12 on the rotating portion 2, the connection order of the first connecting portion 11 and the second connecting portion 12 can be interchanged.

[0101] Because the counterweights 4 are connected end-to-end, multiple counterweights 4 can be removed at once, enabling faster counterweight adjustment. For example, if three counterweights 4 are connected to the rotating portion 2 and two of them need to be removed, the connection between the first counterweight 4 and the second counterweight 4 can be disconnected. This allows the second and third counterweights 4 to be removed together, without having to remove them one by one.

[0102] Example 3

[0103] The difference between this embodiment and embodiment 1 is that:

[0104] When there is only one counterweight unit 4, it is detachably connected to the rotating unit 2. Furthermore, a counterweight cavity 13 is provided within the counterweight unit 4, within which counterweights 14 of varying weights are placed. In actual use, the weight of the counterweight unit 4 can be adjusted by adjusting the weight within the counterweight unit 4 alone, thereby adjusting the overall counterweight. Specifically, the counterweight can be adjusted by placing multiple counterweights 14, or no counterweight 14, within the counterweight cavity 13.

[0105] The above description is only a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, directly or indirectly applied in other related technical fields, is also included in the scope of protection of the present invention.

Claims

1. A hand exercise device with adjustable weights, comprising a fixed portion and a rotating portion, wherein the fixed portion is used to form a path and the rotating portion rotates along the path, characterized in that: There are several counterweights on the rotating part, and the counterweight adjustment is achieved through the following scheme: Plan A: Each counterweight is detachably connected to the rotating part. or, Solution B: Adjacent counterweight parts are detachably connected, and one of the counterweight parts is detachably connected to the rotating part.

2. The hand exercise device with adjustable weights according to claim 1, wherein: When the counterweight adjustment is achieved through solution A, each counterweight part is provided with a first connecting part, and the rotating part is provided with a plurality of second connecting parts. The plurality of first connecting parts correspond to the plurality of second connecting parts one by one and are detachably connected.

3. The hand exercise device with adjustable weights according to claim 1, wherein: When the counterweight adjustment is achieved through solution B, each counterweight portion is provided with a first connecting portion and a second connecting portion; adjacent first connecting portions and second connecting portions between adjacent counterweight portions are detachably connected; The rotating part is provided with at least one first connecting part or second connecting part; the second connecting part or first connecting part of one of the plurality of counterweight parts is adapted to and detachably connected to the rotating part.

4. A hand exercise device with adjustable weights as claimed in claim 2 or 3, characterized in that: The first connection portion and the second connection portion are threadedly connected; the first connection portion is one of the stud and the screw hole, and the second connection portion is the other one; or, The first connecting portion and the second connecting portion are connected by a snap-fit connection; the first connecting portion is one of the snap-fit protrusion and the snap-fit recess, and the second connecting portion is the other one; or, It also includes a pin, the first connecting part and the second connecting part are plugged together to form a plug-in part, and the pin is inserted into the plug-in part; the first connecting part is one of the plug-in outside and the plug-in inside, and the second connecting part is the other one.

5. The hand exercise device with adjustable weights according to claim 1, wherein: A counterweight cavity is provided inside the counterweight part, and counterweight objects of different weights are arranged in the counterweight cavity.

6. The hand exercise device with adjustable weights according to claim 1, wherein: Replace Plan A and / or Plan B with Plan C; Plan C: A counterweight cavity is provided inside the counterweight portion, and counterweight objects of different weights are arranged in the counterweight cavity.

7. A hand exercise device with adjustable weights as claimed in claim 5 or 6, characterized in that: A partition is provided in the counterweight cavity, which divides the counterweight cavity into a plurality of spaces. Counterweight objects are arranged in the spaces; the counterweight objects are counterweight blocks, counterweight liquid or counterweight sand.

8. The hand exercise device with adjustable weights according to claim 7, wherein: A sealing portion is provided on one side of the counterweight cavity, and the sealing portion is detachably connected to the counterweight portion.

9. The hand exercise device with adjustable weights according to claim 8, wherein: The cover part is provided with a sealing part adapted to the grille.

10. The hand exercise device with adjustable weights according to claim 9, wherein: A sealing portion made of soft rubber material is provided on the side of the cover portion facing the grille; when the cover portion abuts against the grille, the sealing portion is located between the two and the two squeeze the sealing portion.

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