Dumbbell weight adjusting device

Abstract

The utility model provides a dumbbell weight adjusting device, and relates to the technical field of fitness equipment. The middle grabbing part of the exercise holding rod is hollowed out, the two ends of the exercise holding rod are in threaded connection with small nuts respectively, the two ends of the exercise holding rod are provided with inner sleeve screw cylinders respectively, and the ends of the inner sleeve screw cylinders are connected with large nuts; a balance weight shell is installed outside the inner sleeve screw cylinder, the interior of the balance weight shell is hollow, the balance weight shell is filled with balance weight steel balls, and the exterior of the balance weight shell is connected with a plugging bolt. According to different exercise intensities, the internal volume of the balance weight shell can be adjusted, the distance between the two outer shells is increased, the internal volume of the balance weight shell is correspondingly increased, the distance between the two outer shells is reduced, the internal volume of the balance weight shell is correspondingly reduced, the number of balance weight steel balls in the balance weight shell can be increased or decreased, and the weight of the dumbbell is changed. The weight of the dumbbell can be finely adjusted, and the use requirements of different weight exercises can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a dumbbell weight adjustment device. Background Art

[0002] Dumbbells are an auxiliary equipment for weightlifting and fitness exercises. They are smaller than barbells and are divided into light dumbbells and heavy dumbbells. Because they are silent during exercise, they are named dumbbells. Dumbbells are widely used as a fitness equipment, such as chest extension training, biceps training, deltoid muscle training, etc.

[0003] In order to facilitate weight adjustment, the existing dumbbells are mostly designed with detachable plate weights at the end. The weight of a single dumbbell plate ranges from 1 to 10 kg. When used for exercise, the weight of the dumbbell can only be increased or decreased by 1 kg. The weight adjustment amount is large, and it is very easy to exceed the exercise weight required by the user, resulting in poor application effect. Utility Model Content

[0004] The present invention relates to a dumbbell weight adjustment device, which solves the problem that in order to facilitate weight adjustment, the existing dumbbells mostly adopt a detachable plate design for the end weights, the weight of a single dumbbell plate is between 1 and 10 kilograms, and when used for exercise, the weight of the dumbbell can only be increased or decreased by 1 kilogram, the weight adjustment amount is large, it is very easy to exceed the exercise weight required by the user, and the application effect is not good.

[0005] In a first aspect of the present disclosure, a dumbbell weight adjustment device is provided, which specifically includes: an exercise grip; the middle gripping part of the exercise grip is hollow, small nuts are respectively threadedly connected at both ends of the exercise grip, inner sleeve screw barrels are respectively installed at both ends of the exercise grip, and large nuts are connected to the ends of the inner sleeve screw barrels; a counterweight shell is installed on the outside of the inner sleeve screw barrel, the inside of the counterweight shell is hollow, counterweight steel balls are filled inside the counterweight shell, and a blocking bolt is connected to the outside of the counterweight shell.

[0006] Furthermore, the counterweight shell is composed of two outer shells and an inner shell. The outer shell is communicated with the inner shell. A screw hole is provided inside the outer shell, and a sealing bolt is threadedly connected in the screw hole.

[0007] Furthermore, the outer side of the inner shell is in sliding contact with the two outer shells.

[0008] Furthermore, a guide slot is provided in a circumferential shape on the inner side of the outer shell, and a guide slider is provided in a circumferential shape on the outer side of the inner shell. The guide slider is slidably connected in the guide slot, and the internal volume of the counterweight shell can be adjusted according to the intensity of exercise. When the distance between the two outer shells increases, the internal volume of the counterweight shell becomes larger accordingly, and when the distance between the two outer shells decreases, the internal volume of the counterweight shell decreases accordingly. The number of counterweight steel balls inside the counterweight shell can be increased or decreased to change the weight of the dumbbells, thereby achieving fine adjustment of the weight of the dumbbells.

[0009] Furthermore, the inner sleeve screw barrel penetrates the counterweight shell, an insert block is provided in a circumferential shape on the outside of the inner sleeve screw barrel, and a positioning groove is provided in a circumferential shape on the outside of the outer shell, and the insert block is inserted into the positioning groove.

[0010] Furthermore, the large nut is threadedly connected to the inner sleeve barrel, and the large nut is in contact with the outer shell.

[0011] Furthermore, the training grip rod passes through the inner sleeve screw barrel, one end of the inner sleeve screw barrel contacts the training grip rod, and the other end of the inner sleeve screw barrel contacts the small nut;

[0012] By adopting the above technical scheme, the inner sleeve screw barrel is prevented from rotating by plugging and cooperating with the positioning groove through the insertion block. When the counterweight steel balls are filled in the counterweight shell, the inside of the counterweight shell is sealed by the sealing bolt, and the large nut is tightened by turning. The inner sleeve screw barrel and the large nut drive the two outer shells to gradually approach each other, reducing the internal volume of the counterweight shell. The counterweight steel balls are gradually concentrated due to the reduction in volume, so that the counterweight steel balls fill the inside of the counterweight shell, which has the effect of fixing the counterweight steel balls and preventing the counterweight steel balls inside the counterweight shell from shaking randomly during training. Then the inner sleeve screw barrel is fixed by the small nut.

[0013] The utility model provides a dumbbell weight adjustment device, which has the following beneficial effects:

[0014] When the utility model is in use, the outer shell and the inner shell are prevented from being separated by sliding cooperation between the guide slider and the guide slide groove. The internal volume of the counterweight shell can be adjusted according to the different exercise intensities. When the distance between the two outer shells is increased, the internal volume of the counterweight shell becomes larger accordingly. When the distance between the two outer shells is reduced, the internal volume of the counterweight shell is reduced accordingly. The number of counterweight steel balls inside the counterweight shell can be increased or decreased to change the weight of the dumbbell. The weight of the dumbbell can be finely adjusted to better meet the needs of different exercise intensities.

[0015] In addition, the inner sleeve thread barrel is prevented from rotating by plugging into the positioning groove. When the counterweight steel balls are filled inside the counterweight shell, the inside of the counterweight shell is sealed by the sealing bolt, and the large nut is tightened by turning. The inner sleeve thread barrel and the large nut drive the two outer shells to gradually approach each other, reducing the internal volume of the counterweight shell. The counterweight steel balls are gradually concentrated due to the reduction in volume, so that the counterweight steel balls fill the interior of the counterweight shell, which has the effect of fixing the counterweight steel balls and preventing the counterweight steel balls inside the counterweight shell from shaking randomly during training. Then the inner sleeve thread barrel is fixed by the small nut to ensure the stability of the connection state of the counterweight shell.

[0016] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture:

[0020] Figure 1 The overall axial side structure schematic diagram of the present application is shown;

[0021] Figure 2 A schematic diagram of the split structure of the exercise handle and the small nut of the present application is shown;

[0022] Figure 3 The schematic diagram of the disassembly structure of the counterweight housing, inner sleeve screw barrel and large nut of the present application is shown;

[0023] Figure 4 A schematic diagram of the axial side structure of the counterweight housing of the present application is shown;

[0024] Figure 5 A schematic diagram of the disassembled structure of the counterweight shell of the present application is shown.

[0025] Reference numerals list

[0026] 1. Exercise grip; 2. Small nut; 3. Counterweight shell; 31. Outer shell; 3101. Screw hole; 3102. Guide slide groove; 3103. Positioning groove; 32. Inner shell; 3201. Guide slide block; 4. Sealing bolt; 5. Inner sleeve screw barrel; 501. Insert block; 6. Large nut. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Please refer to Figures 1 to 5 :

[0029] The utility model proposes a dumbbell weight adjustment device, comprising: an exercise grip 1; the middle gripping part of the exercise grip 1 is hollow, small nuts 2 are respectively threadedly connected at both ends of the exercise grip 1, inner sleeve screw barrels 5 are respectively installed at both ends of the exercise grip 1, and large nuts 6 are connected to the ends of the inner sleeve screw barrel 5; a counterweight shell 3 is installed outside the inner sleeve screw barrel 5, the inside of the counterweight shell 3 is hollow, counterweight steel balls are filled inside the counterweight shell 3, and the weight of a single counterweight steel ball is 50 grams, and a blocking bolt 4 is connected to the outside of the counterweight shell 3; the counterweight shell 3 is composed of two outer shells 31 and an inner shell 32, the outer shell 31 is connected to the inner shell 32, a screw hole 3101 is arranged inside the outer shell 31, and the blocking bolt 4 is threadedly connected to the screw hole 3101; the outer side of the inner shell 32 is connected to the two outer shells The shell 31 is in sliding contact; a guide groove 3102 is provided in a surrounding shape on the inner side of the outer shell 31, and a guide slider 3201 is provided in a surrounding shape on the outer side of the inner shell 32. The guide slider 3201 is slidably connected to the guide groove 3102, and the outer shell 31 and the inner shell 32 are prevented from separating by sliding cooperation between the guide slider 3201 and the guide groove 3102. The internal volume of the counterweight shell 3 can be adjusted according to the intensity of exercise. When the distance between the two outer shells 31 increases, the internal volume of the counterweight shell 3 increases accordingly. When the distance between the two outer shells 31 decreases, the internal volume of the counterweight shell 3 decreases accordingly. The number of counterweight steel balls inside the counterweight shell 3 can be increased or decreased to change the weight of the dumbbells, so as to achieve fine adjustment of the weight of the dumbbells and better meet the needs of different exercise intensities.

[0030] Embodiment 2, on the basis of embodiment 1, the inner sleeve screw barrel 5 passes through the counterweight shell 3, the outer portion of the inner sleeve screw barrel 5 is provided with an insert block 501 in a surrounding shape, the outer portion of the outer shell 31 is provided with a positioning groove 3103 in a surrounding shape, the insert block 501 is inserted into the positioning groove 3103, the large nut 6 is threadedly connected with the inner sleeve screw barrel 5, the large nut 6 is in contact with the outer shell 31, the exercise grip bar 1 passes through the inner sleeve screw barrel 5, one end of the inner sleeve screw barrel 5 is in contact with the exercise grip bar 1, and the other end of the inner sleeve screw barrel 5 is in contact with the small nut 2; adopting the above technical solution, the insert block 501 is plugged into the positioning groove 3103 , preventing the inner sleeve screw barrel 5 from rotating. When the counterweight steel balls are filled in the counterweight shell 3, the inside of the counterweight shell 3 is sealed by the sealing bolt 4, and the large nut 6 is tightened by turning. The inner sleeve screw barrel 5 and the large nut 6 drive the two outer shells 31 to gradually approach each other, reducing the internal volume of the counterweight shell 3. The counterweight steel balls are gradually concentrated due to the reduction in volume, so that the counterweight steel balls fill the inside of the counterweight shell 3, which has the effect of fixing the counterweight steel balls and preventing the counterweight steel balls inside the counterweight shell 3 from shaking at will during training. Then the inner sleeve screw barrel 5 is fixed by the small nut 2 to ensure the stability of the connection state of the counterweight shell 3.

[0031] The working principle of this embodiment is as follows: the guide slider 3201 is slidably matched with the guide slot 3102 to prevent the outer shell 31 from separating from the inner shell 32; first, the internal volume of the counterweight shell 3 is adjusted according to the different exercise intensity of the user, the distance between the two outer shells 31 is increased, and the internal volume of the counterweight shell 3 is correspondingly increased, and the distance between the two outer shells 31 is reduced, and the internal volume of the counterweight shell 3 is correspondingly reduced, and the number of counterweight steel balls inside the counterweight shell 3 can be increased or decreased to change the weight of the dumbbell, so as to achieve fine adjustment of the dumbbell weight and better meet the needs of different exercise intensities; after the counterweight steel balls are filled in the counterweight shell 3, the inside of the counterweight shell 3 is sealed by the blocking bolt 4. The large nut 6 is rotated and tightened, and the inner sleeve screw barrel 5 and the large nut 6 drive the two outer shells 31 to gradually approach each other, reducing the internal volume of the counterweight shell 3. The counterweight steel balls are gradually concentrated due to the reduction in volume, so that the counterweight steel balls fill the inside of the counterweight shell 3, which has the effect of fixing the counterweight steel balls and preventing the counterweight steel balls inside the counterweight shell 3 from shaking at will during training; finally, the small nut 2 is rotated and tightened to make the small nut 2 contact with the inner sleeve screw barrel 5, which fixes the inner sleeve screw barrel 5 and ensures the stability of the connection state of the counterweight shell 3, and the middle part of the exercise grip 1 can be held for exercise.

[0032] In this article, there are a few points to note:

[0033] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0034] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0035] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A dumbbell weight adjustment device, comprising: An exercise grip (1); characterized in that the middle gripping portion of the exercise grip (1) is hollow, small nuts (2) are respectively threadedly connected to the two ends of the exercise grip (1), inner sleeve screw barrels (5) are respectively installed at the two ends of the exercise grip (1), and large nuts (6) are connected to the ends of the inner sleeve screw barrel (5); a counterweight shell (3) is installed outside the inner sleeve screw barrel (5), the inside of the counterweight shell (3) is hollow, counterweight steel balls are filled inside the counterweight shell (3), and a blocking bolt (4) is connected to the outside of the counterweight shell (3).

2. A dumbbell weight adjustment device according to claim 1, characterized in that: The counterweight shell (3) is composed of two outer shells (31) and an inner shell (32); the outer shell (31) is connected to the inner shell (32); a screw hole (3101) is provided inside the outer shell (31), and a blocking bolt (4) is threadedly connected in the screw hole (3101).

3. A dumbbell weight adjustment device according to claim 2, characterized in that: The outer side of the inner shell (32) is in sliding contact with the two outer shells (31).

4. A dumbbell weight adjustment device according to claim 2, characterized in that: The outer shell (31) is provided with a guide slide groove (3102) in a circumferential shape on the inner side, and the inner shell (32) is provided with a guide slider (3201) in a circumferential shape on the outer side. The guide slider (3201) is slidably connected in the guide slide groove (3102).

5. A dumbbell weight adjustment device according to claim 2, characterized in that: The inner sleeve screw barrel (5) passes through the counterweight housing (3); an insert block (501) is provided in a circumferential shape on the outside of the inner sleeve screw barrel (5); a positioning groove (3103) is provided in a circumferential shape on the outside of the outer housing (31); and the insert block (501) is inserted into the positioning groove (3103).

6. A dumbbell weight adjustment device according to claim 2, characterized in that: The large nut (6) is threadedly connected to the inner sleeve thread barrel (5), and the large nut (6) is in contact with the outer shell (31).

7. A dumbbell weight adjustment device according to claim 1, characterized in that: The training grip rod (1) passes through the interior of the inner sleeve screw barrel (5); one end of the inner sleeve screw barrel (5) contacts the training grip rod (1), and the other end of the inner sleeve screw barrel (5) contacts the small nut (2).

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