Dumbbell capable of rapidly replacing balancing weights
The counterweight block is quickly removed by combining threaded rods and oblique rods, and adjusting the grip length with long plates and springs, the problem of cumbersome disassembly of traditional dumbbell counterweight blocks is solved, and replacement efficiency and convenience of use are improved.
Patent Information
- Application Number
- CN202421775447.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The disassembly and replacement of traditional dumbbell counterweights is complicated and affects the enthusiasm for exercise.
The combined structure of threaded rod, movable block, oblique rod and clamp block is adopted. By rotating the first handle, the threaded rod is rotated, driving the movable block and oblique rod to move, thereby quickly removing the counterweight block; at the same time, the grip length is adjusted through the long plate, jack and spring structure to improve the convenience of use.
It realizes rapid disassembly and replacement of counterweight blocks, improves operating efficiency, and enhances the practicality and convenience of use of dumbbells.
Smart Images
Figure CN223042067U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fitness equipment, and particularly relates to a dumbbell with quickly replaceable counterweights. Background Art
[0002] A dumbbell is a simple equipment for enhancing muscle strength training. Its main material is cast iron, and some are wrapped with a layer of rubber on the outside. It is an auxiliary equipment for weightlifting and fitness exercises. It is smaller than a barbell. For patients with muscle weakness caused by motor paralysis, pain, long-term inactivity, etc., holding a dumbbell, they can use the weight of the dumbbell to perform active anti-resistance exercises to train muscle strength.
[0003] With the development and progress of society, people's living standards have been improved, and more and more people attach importance to physical exercise. Due to its small volume, the dumbbell is favored by people who like to exercise at home. However, in the actual use process of traditional dumbbells, most of their counterweights are fixed by threaded blocks. However, this method is cumbersome to operate when disassembling and replacing the counterweights. The operator needs to repeatedly turn the block, which takes a long time and is likely to reduce the enthusiasm of the operator for exercise. Therefore, it needs to be improved. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the above problems. The utility model provides a dumbbell with quickly replaceable counterweights, which has the advantage of being convenient for quickly disassembling and replacing the counterweights.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A dumbbell with quickly replaceable counterweights includes mounting rods. The number of the mounting rods is two. The middle parts of the opposite surfaces of the two mounting rods are respectively fixedly installed with support rods. The number of the support rods is two. The outer surfaces of the two support rods are respectively movably sleeved with counterweights. The middle parts of the inner parts of the two support rods are respectively movably sleeved with threaded rods. The number of the threaded rods is two. The outer sides of the outer surfaces of the two threaded rods are respectively fixedly sleeved with first handles. The number of the first handles is two. The opposite surfaces of the two first handles are respectively movably connected with the opposite surfaces of the two support rods. The outer surfaces of the two threaded rods are respectively threadedly sleeved with movable blocks. The inner surface of the bottom end of the movable block is movably sleeved with a limiting rod. The limiting rod is fixedly sleeved at the bottom of the inner part of the support rod. The top end of the movable block is hinged with an inclined rod. The other end of the inclined rod is hinged with a clamping block. The top end of the clamping block penetrates through the support rod and the counterweight and extends into the counterweight. The bottom parts of the outer surfaces of the two support rods are respectively fixedly installed with positioning blocks located below the clamping block. The outer surface of the positioning block is movably sleeved with the inner surface of the counterweight.
[0006] Preferably, a positioning hole located below the positioning block is formed at the bottom of the inner surface of the counterweight block. A hemispherical block is movably sleeved inside the positioning hole, and the top end of the hemispherical block penetrates through the positioning block and extends into the positioning block.
[0007] Preferably, a circular plate is movably sleeved at the bottom end inside the positioning block. The bottom end of the circular plate is fixedly connected to the top end of the hemispherical block, and a first spring is fixedly installed at the top end of the circular plate. The other end of the first spring is fixedly installed at the top end inside the positioning block.
[0008] Preferably, a handle is movably sleeved inside each of the two mounting rods, and a long plate is movably sleeved at the top end inside the handle.
[0009] Preferably, a vertical plate is fixedly installed in the middle of the bottom end of the long plate. The bottom end of the vertical plate penetrates through the handle and extends to the outside of the handle and is fixedly installed with a second handle. The outer surface of the second handle is movably sleeved with the inner surface of the bottom end of the handle.
[0010] Preferably, first jacks are respectively formed at the adjacent ends of the top parts of the outer surfaces of the two mounting rods, and second jacks are respectively formed on the outer sides of the top parts of the outer surfaces of the two mounting rods.
[0011] Preferably, inserting rods are respectively fixedly installed on the left and right sides of the top end of the long plate. The top ends of the inserting rods penetrate through the handle and extend to the outside of the handle. The top parts of the outer surfaces of the inserting rods are movably sleeved with the inner surfaces of the second jacks. Second springs are respectively fixedly installed on the left and right sides of the bottom end of the long plate. The other ends of the second springs are fixedly connected to the bottom ends inside the handle.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. By providing a threaded rod, a first handle, a movable block, an inclined rod and a clamping block, when the first handle is rotated, the threaded rod will rotate. Since the outer surface of the threaded rod is threadedly sleeved with the inner surface of the movable block, as the threaded rod rotates, the movable block will drive one end of the inclined rod to move along the outer surface of the limiting rod, so that the other end of the inclined rod generates a pulling force on the clamping block, pulling the clamping block to move, thereby realizing the rapid disassembly and replacement of the counterweight block, and improving the replacement efficiency of the counterweight block.
[0014] 2. In the present utility model, by providing a long board, a first jack, a second jack, a plug rod and a second spring, when the second handle is pulled, the vertical board will drive the long board to move along the inner surface of the grip and compress the second spring. Since the plug rod is fixedly connected to the long board, the plug rod will move together and retract into the interior of the grip and separate from the second jack. When the first jack is aligned with the plug rod, under the restoring action of the second spring, the plug rod will be reset, thereby realizing the extension of the grip. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the present utility model;
[0016] Figure 2 is a schematic cross-sectional structural diagram of the top of the present utility model;
[0017] Figure 3 is a schematic cross-sectional structural diagram of the counterweight of the present utility model;
[0018] Figure 4 is Figure 2 a partial enlarged structural diagram at A in
[0019] Figure 5 is Figure 3 a partial enlarged structural diagram at B in
[0020] In the figure: 1. mounting rod; 2. support rod; 3. counterweight; 4. threaded rod; 5. first handle; 6. movable block; 7. limiting rod; 8. inclined rod; 9. clamping block; 10. positioning block; 11. positioning hole; 12. hemispherical block; 13. circular plate; 14. first spring; 15. grip; 16. long board; 17. vertical board; 18. second handle; 19. first jack; 20. second jack; 21. plug rod; 22. second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] As Figures 1 to 5As shown in the figure, the utility model provides a dumbbell with a quickly replaceable counterweight, which comprises two mounting rods 1. The middle parts of the opposite sides of the two mounting rods 1 are respectively fixedly provided with support rods 2. The number of the support rods 2 is two. The outer surfaces of the two support rods 2 are respectively movably sleeved with counterweights 3. The middle parts inside the two support rods 2 are respectively movably sleeved with threaded rods 4. The number of the threaded rods 4 is two. The outer sides of the outer surfaces of the two threaded rods 4 are respectively fixedly sleeved with first handles 5. The number of the first handles 5 is two. The opposite surfaces of the two first handles 5 are respectively movably connected with the opposite sides of the two support rods 2. The outer surfaces of the two threaded rods 4 are respectively threadedly sleeved with movable blocks 6. The inner surface of the bottom end of the movable block 6 is movably sleeved with a limiting rod 7. The limiting rod 7 is fixedly sleeved at the bottom inside the support rod 2. The top end of the movable block 6 is hinged with an inclined rod 8. The other end of the inclined rod 8 is hinged with a clamping block 9. The top end of the clamping block 9 penetrates through the support rod 2 and the counterweight 3 and extends into the counterweight 3. The bottom parts of the outer surfaces of the two support rods 2 are respectively fixedly provided with positioning blocks 10 positioned below the clamping block 9. The outer surfaces of the positioning blocks 10 are movably sleeved with the inner surfaces of the counterweights 3.
[0023] When the first handle 5 is rotated, the threaded rod 4 will rotate along the inner surface of the support rod 2, so that the movable block 6 threadedly sleeved with the threaded rod 4 will move along the outer surface of the limiting rod 7. Since the upper and lower ends of the inclined rod 8 are respectively hinged with the clamping block 9 and the movable block 6, the inclined rod 8 will move together with the movable block 6, so that the other end of the inclined rod 8 will generate a pulling force on the clamping block 9, pulling the clamping block 9 to move towards the inside of the support rod 2. When the clamping block 9 is completely separated from the counterweight 3, the quick disassembly and replacement of the counterweight 3 can be realized.
[0024] Reference Figures 2 to 5 Refer to
[0025] As a technical optimization scheme of the utility model, the existence of the positioning hole 11 and the hemispherical block 12 will play an auxiliary positioning role for the counterweight 3.
[0026] Reference Figures 2 to 5 Refer to
[0027] As a technical optimization solution of the present utility model, when the hemispherical block 12 drives the circular plate 13 to move, the first spring 14 will be compressed, and under the restoring action of the first spring 14, the circular plate 13 will be forced to return to its original position.
[0028] Reference Figure 2 , inside both of the two mounting rods 1, there is a grip 15 movably sleeved, and at the top end inside the grip 15, there is a long plate 16 movably sleeved.
[0029] As a technical optimization solution of the present utility model, the inner surface of the grip 15 and the outer surface of the long plate 16 are both smooth, ensuring that the long plate 16 will not get stuck when moving along the inside of the grip 15.
[0030] Reference Figure 1 and Figure 2 , at the middle of the bottom end of the long plate 16, there is a vertical plate 17 fixedly installed, the bottom end of the vertical plate 17 penetrates through the grip 15 and extends to the outside of the grip 15 and is fixedly installed with a second handle 18, and the outer surface of the second handle 18 and the inner surface of the bottom end of the grip 15 are movably sleeved.
[0031] As a technical optimization solution of the present utility model, when the second handle 18 is pulled, the vertical plate 17 will drive the long plate 16 to move.
[0032] Reference Figure 2 and Figure 3 , at the adjacent ends of the top parts of the outer surfaces of the two mounting rods 1, first jacks 19 are respectively opened, and at the outer sides of the top parts of the outer surfaces of the two mounting rods 1, second jacks 20 are respectively opened.
[0033] As a technical optimization solution of the present utility model, the shapes and sizes of the first jack 19 and the second jack 20 are the same, and the existence of the first jack 19 and the second jack 20 realizes the adjustment of the distance between the two mounting rods 1.
[0034] Reference Figure 2 , at the left and right sides of the top end of the long plate 16, there are plug rods 21 fixedly installed respectively, the top ends of the plug rods 21 penetrate through the grip 15 and extend to the outside of the grip 15, the top parts of the outer surfaces of the plug rods 21 and the inner surfaces of the second jacks 20 are movably sleeved, and at the left and right sides of the bottom end of the long plate 16, there are second springs 22 fixedly installed respectively, and the other ends of the second springs 22 are fixedly connected to the bottom end inside the grip 15.
[0035] As a technical optimization solution of the present utility model, when the long plate 16 moves, it will drive the plug rods 21 to move together and compress the second springs 22.
[0036] The working principle and usage process of the present utility model:
[0037] First, when an operator uses the dumbbell and needs to disassemble and replace the counterweight block 3, the operator can rotate the first handle 5, causing the threaded rod 4 to rotate. At this time, the movable block 6 threadedly sleeved on the threaded rod 4 will drive the inclined rod 8 to move along the outer surface of the limiting rod 7, so that the other end of the inclined rod 8 generates a pulling force on the clamping block 9, pulling the clamping block 9 to move into the support rod 2 until the clamping block 9 is separated from the counterweight block 3. Then, the operator can extract the counterweight block 3. During the extraction process of the counterweight block 3, the inner wall of the positioning hole 11 presses against the hemispherical block 12, causing the hemispherical block 12 to drive the round plate 13 to move along the inner surface of the positioning block 10 and compress the first spring 14. When the replacement of the counterweight block 3 is completed, under the restoring action of the first spring 14, the hemispherical block 12 will return to its original position, thus cooperating with the positioning block 10 to position the counterweight block 3. Then, rotate the first handle 5 to reset the clamping block 9, and the disassembly and replacement of the counterweight block 3 can be completed. The mutual cooperation of each mechanism improves the efficiency and convenience of the disassembly and replacement of the counterweight block 3.
[0038] When the operator needs to adjust the length of the grip 15 for double-handed exercise, pull the second handle 18, causing the vertical plate 17 to drive the long plate 16 to move and compress the second spring 22, so that the insertion rod 21 moves together and separates from the second insertion hole 20. Then, the operator can push the installation rod 1 until the first insertion hole 19 is aligned with the insertion rod 21, and then release the second handle 18. At this time, under the restoring action of the second spring 22, the insertion rod 21 will be inserted into the first insertion hole 19, thus completing the locking of the position of the installation rod 1, and the extension of the grip 15 can be realized in this way, thereby improving the practicability of the dumbbell.
[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.
[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dumbbell for quickly changing counterweights, comprising a mounting rod (1), characterized in that: There are two installation rods (1), and support rods (2) are fixedly installed in the middle of the back sides of the two installation rods (1). There are two support rods (2). The outer surfaces of the two support rods (2) are movably sleeved with counterweights (3). The middle ends of the inner parts of the two support rods (2) are movably sleeved with threaded rods (4). There are two threaded rods (4). The outward sides of the outer surfaces of the two threaded rods (4) are fixedly sleeved with first handles (5). There are two first handles (5). The opposite surfaces of the two first handles (5) are movably connected to the back sides of the two support rods (2). The two threaded rods (4) are movably sleeved with counterweights (3). The outer surface of the rod (4) is respectively threadedly sleeved with a movable block (6), the inner surface of the bottom end of the movable block (6) is movably sleeved with a limit rod (7), the limit rod (7) is fixedly sleeved on the bottom inside the support rod (2), the top end of the movable block (6) is hinged with an inclined rod (8), the other end of the inclined rod (8) is hinged with a clamping block (9), the top end of the clamping block (9) passes through the support rod (2) and the counterweight block (3) and extends to the inside of the counterweight block (3), the bottom of the outer surface of the two support rods (2) is respectively fixedly installed with a positioning block (10) located below the clamping block (9), the outer surface of the positioning block (10) and the inner surface of the counterweight block (3) are movably sleeved.
2. A dumbbell with a quick-change weight block according to claim 1, characterized in that: A positioning hole (11) located below the positioning block (10) is provided at the bottom of the inner surface of the counterweight block (3); a hemispherical block (12) is movably sleeved inside the positioning hole (11); the top end of the hemispherical block (12) penetrates the positioning block (10) and extends into the interior of the positioning block (10).
3. A dumbbell with a quick-change weight block according to claim 1, characterized in that: A circular plate (13) is movably sleeved at the bottom end of the positioning block (10); the bottom end of the circular plate (13) is fixedly connected to the top end of the hemispherical block (12); a first spring (14) is fixedly mounted at the top end of the circular plate (13); the other end of the first spring (14) is fixedly mounted at the top end of the positioning block (10).
4. A dumbbell with a quick-change weight block according to claim 1, characterized in that: The insides of the two installation rods (1) are both movably sleeved with a handle (15), and the top ends of the handles (15) are movably sleeved with a long plate (16).
5. A dumbbell with a quick-change weight block according to claim 4, characterized in that: A vertical plate (17) is fixedly mounted in the middle of the bottom end of the long plate (16); the bottom end of the vertical plate (17) passes through the handle (15) and extends to the outside of the handle (15) and is fixedly mounted with a second handle (18); the outer surface of the second handle (18) is movably sleeved with the inner surface of the bottom end of the handle (15).
6. A dumbbell with a quick-change weight block according to claim 1, characterized in that: First plug holes (19) are respectively provided at adjacent ends of the top of the outer surface of the two mounting rods (1), and second plug holes (20) are respectively provided at the outward side of the top of the outer surface of the two mounting rods (1).
7. A dumbbell with a quick-change weight block according to claim 4, characterized in that: An insertion rod (21) is fixedly mounted on the left and right sides of the top end of the long board (16), the top end of the insertion rod (21) passes through the handle (15) and extends to the outside of the handle (15), the top of the outer surface of the insertion rod (21) is movably connected to the inner surface of the second insertion hole (20), and a second spring (22) is fixedly mounted on the left and right sides of the bottom end of the long board (16), the other end of the second spring (22) is fixedly connected to the bottom end inside the handle (15).