Weight-adjustable dumbbell

Abstract

The weight-adjustable dumbbell comprises a grip, the left end and the right end of the grip are each connected with a hexagonal prism support, a first installation groove is formed in each hexagonal prism support, a first supporting rod is arranged in each first installation groove, a first balancing weight and a second balancing weight are connected to each first supporting rod in a sliding mode, and the first balancing weight and the second balancing weight are arranged on the first supporting rods in a sliding mode. The first supporting rod is connected with a first threaded rod, the first threaded rod is in threaded connection with a supporting plate, and two locking assemblies used for assisting in fixing the first balancing weight and the second balancing weight are arranged on each hexagonal prism support in a mirror image mode. According to the utility model, the problems that the balancing weights and fastening bolts are abraded due to frequent friction among the balancing weights in the exercising process, so that the balancing weights are loosened, the balancing weights possibly fall off, and potential safety hazards are generated are solved.

Description

Technical Field

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

[0002] A dumbbell is a simple device used for enhancing muscle strength training. Its main material is cast iron, and some are wrapped with a layer of rubber. Its purpose is for muscle strength training and compound muscle movement training. 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] In an existing dumbbell with adjustable weight, multiple counterweights are installed through fastening bolts. However, during exercise, frequent friction between the counterweights will cause wear on the counterweights and the fastening bolts, resulting in loosening between the counterweights and potentially causing the counterweights to fall off, posing a safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the existing defects and provide a dumbbell with adjustable weight, which can effectively prevent the counterweights from falling off and reduce potential safety hazards.

[0005] The technical solution for achieving the above purpose is: a dumbbell with adjustable weight, including a grip. A hexagonal prism bracket is respectively connected to both the left and right ends of the grip. A first installation groove is formed in each of the hexagonal prism brackets. A first support rod is provided in each of the first installation grooves. A first counterweight and a second counterweight are slidably connected to the first support rod. A first threaded rod is connected to the first support rod. A support plate is threadedly connected to the first threaded rod. The support plate is in close contact with the second counterweight and also in close contact with the corresponding hexagonal prism bracket. Two locking components for assisting in fixing the first counterweight and the second counterweight are mirror-symmetrically formed on each of the hexagonal prism brackets.

[0006] Preferably, a first support hole is formed in the first counterweight, and a corresponding first through hole is formed in the second counterweight. Two threaded holes are mirror-symmetrically provided on the support plate. A second threaded rod is threadedly connected to each of the threaded holes. The second threaded rod passes through the first through hole and is in close contact with the inner wall of the first support hole.

[0007] Preferably, the locking assembly includes a sliding plate, two springs and two second support rods. Two second mounting grooves are mirror - symmetrically formed on each hexagonal prism bracket. Two of the springs are mirror - symmetrically arranged in the second mounting grooves. One end of each spring is connected to the hexagonal prism bracket, and the other end of the spring is connected to a sliding plate. Two of the second support rods are mirror - symmetrically connected to the sliding plate. Two second through - holes are mirror - symmetrically formed in the second mounting grooves. Corresponding second support holes are formed on the first counterweight and the second counterweight. The second support rods pass through the corresponding second through - holes and are in close contact with the inner walls of the corresponding second support holes.

[0008] Preferably, the handle is provided with anti - slip patterns.

[0009] Preferably, two holding grooves are mirror - symmetrically formed on each sliding plate.

[0010] The beneficial effects of the present utility model are as follows: A support plate is threadedly connected to the first threaded rod. The support plate is in close contact with the second counterweight and also in close contact with the corresponding hexagonal prism bracket. By squeezing the first counterweight and the second counterweight by the support plate, the first counterweight and the second counterweight are fixed together in the first mounting groove. Then, under the action of the spring force, the two second support rods are inserted into the second support holes, thereby assisting in fixing the first counterweight and the second counterweight. This structure can ensure the stability of the fixation of the first counterweight and the second counterweight, effectively prevent the first counterweight and the second counterweight from loosening, and prevent the first counterweight and the second counterweight from falling off from the hexagonal prism bracket, greatly reducing the safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three - dimensional view of the present utility model;

[0012] Figure 2 is a part schematic diagram of the hexagonal prism bracket of the present utility model;

[0013] Figure 3 is an exploded view of the present utility model.

[0014] In the figure: 1. Handle; 2. Hexagonal prism bracket; 3. First mounting groove; 4. First support rod; 5. First counterweight; 6. First threaded rod; 7. Second counterweight; 8. Support plate; 9. Second threaded rod; 10. First support hole; 11. First through - hole; 12. Sliding plate; 13. Spring; 14. Second support rod; 15. Second mounting groove; 16. Second through - hole; 17. Second support hole; 18. Holding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0016] The present utility model will be further described below with reference to the accompanying drawings.

[0017] Embodiment 1: As Figures 1-3 shown, an adjustable-weight dumbbell includes a grip 1, two hexagonal prism brackets 2, two first support rods 4, two first counterweight blocks 5, two second counterweight blocks 7, two support plates 8, and two locking assemblies.

[0018] Specifically, a hexagonal prism bracket 2 is respectively connected to each of the left and right ends of the grip 1. A first installation groove 3 is formed in each hexagonal prism bracket 2. A first support rod 4 is provided in each first installation groove 3. A first counterweight block 5 and a second counterweight block 7 are slidably connected to the first support rod 4. A first threaded rod 6 is connected to the first support rod 4. A support plate 8 is threadedly connected to the first threaded rod 6. By rotating the support plate 8, the support plate 8 can be installed or removed from the first threaded rod 6. The support plate 8 is in close contact with the second counterweight block 7. The first counterweight block 5 and the second counterweight block 7 are fixed together in the first installation groove 3 through the support plate 8. The support plate 8 is also in close contact with the corresponding hexagonal prism bracket 2. Two locking assemblies are mirror-symmetrically arranged on each hexagonal prism bracket 2 for assisting in fixing the first counterweight block 5 and the second counterweight block 7.

[0019] Specifically, a first support hole 10 is formed in the first counterweight block 5. A corresponding first through hole 11 is formed in the second counterweight block 7. Two threaded holes are mirror-symmetrically arranged on the support plate 8. A second threaded rod 9 is threadedly connected to each threaded hole. The second threaded rod 9 passes through the first through hole 11 and is in close contact with the inner wall of the first support hole 10. The second threaded rod 9 can be received into the first through hole 11 and the first support hole 10 through the first through hole 11, ensuring aesthetics. At the same time, the two second threaded rods 9 can fasten the first counterweight block 5.

[0020] Specifically, the locking assembly includes a sliding plate 12, two springs 13 and two second support rods 14. Two second mounting grooves 15 are mirror - image formed on each hexagonal prism bracket 2. Two springs 13 are mirror - image arranged in the second mounting grooves 15. One end of each spring 13 is connected to the hexagonal prism bracket 2, and the other end of the spring 13 is connected to a sliding plate 12. Two second support rods 14 are mirror - image connected to the sliding plate 12. Under the action of the elastic force of the springs 13, the two second support rods 14 are inserted into the second support holes 17, thereby assisting in fixing the first counterweight 5 and the second counterweight 7. Two second through - holes 16 are mirror - image formed in the second mounting grooves 15. Corresponding second support holes 17 are formed on both the first counterweight 5 and the second counterweight 7. The second support rods 14 pass through the corresponding second through - holes 16 and are in close contact with the inner walls of the corresponding second support holes 17.

[0021] Specifically, the grip 1 is provided with anti - slip patterns, which can increase the friction and prevent the hand from slipping. Two holding grooves 18 are mirror - image formed on each sliding plate 12. The holding grooves 18 can facilitate lifting the sliding plate 12, thereby lifting or inserting the two second support rods 14.

[0022] Embodiment 2: When it is necessary to reduce the weight of the dumbbell, first rotate the two second threaded rods 9, take out the second threaded rods 9 from the support plate 8, then rotate the support plate 8 and take out the support plate 8 from the first threaded rod 6. Then lift the two sliding plates 12. At this time, the two sliding plates 12 will drive the two second support rods 14 each to disengage from the corresponding second support holes 17. At this time, the second counterweight 7 can be taken out;

[0023] Then reinstall the support plate 8 until the support plate 8 is in close contact with the corresponding hexagonal prism bracket 2, and then install the two second threaded rods 9 until the second threaded rods 9 are in close contact with the inner wall of the first support hole 10. The first counterweight 5 can be fixed by the two second threaded rods 9.

[0024] Embodiment 3: When the lightest gear is required, following the steps of Embodiment 2, lift the two sliding plates 12. After taking out the first counterweight 5 and the second counterweight 7 at the same time, make the support plate 8 in close contact with the corresponding hexagonal prism bracket 2, and screw the two second threaded rods 9 completely into the first mounting groove 3.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable-weight dumbbell, characterized in that, It includes a grip (1), and a hexagonal prism support (2) is respectively connected to both the left and right ends of the grip (1). A first installation groove (3) is provided in each of the hexagonal prism supports (2), and a first support rod (4) is provided in each of the first installation grooves (3). A first counterweight (5) and a second counterweight (7) are slidably connected to the first support rod (4). A first threaded rod (6) is connected to the first support rod (4), and a support plate (8) is threadedly connected to the first threaded rod (6). The support plate (8) is in close contact with the second counterweight (7) and also in close contact with the corresponding hexagonal prism support (2). Two locking components for assisting in fixing the first counterweight (5) and the second counterweight (7) are mirror - symmetrically provided on each of the hexagonal prism supports (2).

2. The weight-adjustable dumbbell according to claim 1, wherein A first support hole (10) is provided in the first counterweight (5), and a corresponding first through - hole (11) is provided in the second counterweight (7). Two threaded holes are mirror - symmetrically provided on the support plate (8), and a second threaded rod (9) is threadedly connected in each of the threaded holes. The second threaded rod (9) passes through the first through - hole (11) and is in close contact with the inner wall of the first support hole (10).

3. A weight-adjustable dumbbell according to claim 1, characterized in that, The locking component includes a sliding plate (12), two springs (13), and two second support rods (14). Two second installation grooves (15) are mirror - symmetrically provided in each of the hexagonal prism supports (2). Two of the springs (13) are mirror - symmetrically provided in the second installation grooves (15). One end of each spring (13) is connected to the hexagonal prism support (2), and the other end of the spring (13) is connected to the sliding plate (12). Two of the second support rods (14) are mirror - symmetrically connected to the sliding plate (12). Two second through - holes (16) are mirror - symmetrically provided in the second installation grooves (15). Second support holes (17) corresponding to them are provided in both the first counterweight (5) and the second counterweight (7). The second support rod (14) passes through the corresponding second through - hole (16) and is in close contact with the inner wall of the corresponding second support hole (17).

4. A weight-adjustable dumbbell according to claim 1, characterized in that, The grip (1) is provided with anti - slip patterns.

5. The weight-adjustable dumbbell according to claim 3, characterized in that, Two holding grooves (18) are mirror - symmetrically provided on each of the sliding plates (12).

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