Adjustable dumbbell

Abstract

The utility model provides an adjustable dumbbell which comprises a base for containing dumbbell pieces, the dumbbell pieces, a gear disc, a plurality of chucks installed on a rod body and a handle, the handle is rotationally connected to the middle of the rod body in a sleeved mode, and the handle drives the gear disc to drive the gear pieces on the chucks to rotate. The clamping columns are pushed out and clamped into the clamping holes of the dumbbell pieces by the pushing blocks of the gear pieces; the chucks are symmetrically installed on the rod body, at least two chucks are arranged on each side, the blocking pieces of the chucks on each side are connected in a clamped mode, bearing discs and fixing pieces are further arranged in the chucks, at least two reinforcing rings are arranged in the bearing discs, a plurality of reinforcing ribs are further arranged between the reinforcing rings in a connected mode, and the two clamping columns are symmetrically installed between the reinforcing rings and the reinforcing ribs of the bearing discs. The clamping columns are wrapped and fixed to the bearing disc through the fixing pieces. A firmer and more reliable chuck and a dual protection mechanism are adopted, the weight of the dumbbell pieces is effectively transmitted to the rod body, and it is effectively ensured that the dumbbell pieces cannot fall off in the using process.

Description

Technical Field

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

[0002] Dumbbells are simple equipment used to enhance muscle strength training. The current dumbbell adjustment method on the market is usually to install the dumbbell plates on the dumbbell rod from the side, and then lock the dumbbell plates with a compression nut. This adjustment method requires manual disassembly and assembly of the dumbbell plates to achieve, and the operation is relatively cumbersome. In order to facilitate the adjustment of the dumbbell weight, Chinese utility model patent 2023208767923 discloses an adjustable dumbbell, including a handle, a toothed disc is provided at both ends of the handle, and a plurality of external teeth are provided at intervals along the circumferential direction on the outer side of the toothed disc. When the handle is rotated, it is suitable for driving the two toothed discs to rotate and pushing the two spindles to make linear motion in opposite directions, so that each spindle hangs on the corresponding one or more counterweights. In actual use, the teeth and spindles of the toothed disc will wear, resulting in the spindle being unable to stably hang on the counterweight, and it will fall during use, which poses a very large safety hazard. To this end, an adjustable dumbbell is proposed to solve the above problems. Utility Model Content

[0003] In view of this, the present disclosure provides an adjustable dumbbell, aiming to solve the problems of low safety of the existing adjustable dumbbells in the background technology.

[0004] The disclosed embodiment provides an adjustable dumbbell, comprising a base for placing dumbbell plates, dumbbell plates, a shift plate, a plurality of chucks mounted on a rod body, a handle, and a fixing plate and a fixing strip for fixing the plurality of chucks, wherein the handle is rotatably sleeved in the middle of the rod body, and the handle drives the shift plate and then the shift plate on the chuck to rotate, so that the push block of the shift plate pushes the clamping column out and clamps it into the clamping hole of the dumbbell plate; the chucks are symmetrically installed on the rod body, at least two chucks are provided on each side, and the shift plates of the chucks on each side are clamped with each other, the chuck also includes a carrying plate and a fixing member, the carrying plate is provided with at least two circles of reinforcing rings, and a plurality of reinforcing ribs are connected between the reinforcing rings, the clamping column has two and is symmetrically installed between the reinforcing ring and the reinforcing rib of the carrying plate, and the fixing member wraps the clamping column and fixes it on the carrying plate.

[0005] As an improvement, an outer spring is provided on the outer side of the clamping column to rebound the clamping column to the recessed position of the shifting plate, and an inner spring and a bead are provided on the inner side of the clamping column. The inner spring pops the bead toward the side of the shifting plate so that the bead contacts the push block of the shifting plate.

[0006] Further description of the aforementioned scheme, the fixing plate fixes the chucks in series, the fixing plates at both ends are connected by fixing strips and fixing rods passing through the chucks, and a safety lock is provided at the bottom of the fixing plate near the handle, the safety lock includes an elastic member and a locking block, the elastic member pops the locking block out toward the bottom, an opening is provided at the bottom of the fixing plate for connecting to the locking block from the outside, a protrusion corresponding to the opening is provided on the base, when the protrusion is inserted into the opening and lifts the locking block, the locking block is separated from the shift disk, and the handle can be easily rotated, and when the locking block is pressed down and reset by the elastic member, the locking block jams the shift disk so that the handle cannot be rotated.

[0007] As an improvement, the shift plate is provided with a scale, and the two ends of the shift plate are respectively engaged with the handle and the shift plate to transmit the rotation angle of the handle to the shift plate.

[0008] Further description of the above scheme, the circumferential area occupied by the push blocks of the shift plates on the same side of the handle increases from close to the handle to far away from the handle, and the push blocks are symmetrically arranged on both sides of the sleeve, and the shift plates on the same side are inserted into the sleeve through a transmission shaft to realize transmission.

[0009] Further description of the above scheme, the base is provided with a plurality of grooves for fixing dumbbell plates, the dumbbell plates are in a "U" shape, and the clamping hole is located in the middle of the inner side of the dumbbell plates. When the chuck is clamped with the dumbbell plates, the bottom of the chuck abuts against the inner side of the dumbbell plates, and the clamping column is inserted into the clamping hole.

[0010] Further describing the above scheme, the circumference of the shift plate is evenly distributed with limit grooves, and a limit column is provided on the fixed plate close to the handle. When the shift plate rotates a certain angle, the limit column is inserted into the limit groove to limit the rotation of the shift plate and the handle.

[0011] Compared with the prior art, the utility model adopts a more solid and reliable chuck, which effectively transfers the weight of the dumbbell pieces to the rod body, and is safer and more reliable; a double protection mechanism is adopted, by adding a safety lock on the fixing plate, which is immediately locked when the dumbbell leaves the base, ensuring that the handle cannot be rotated during use, effectively preventing the dumbbell pieces from falling off, and at the same time, a limit groove is designed on the peripheral side of the gear plate, and a limit column is designed on the fixing plate, ensuring that the handle cannot be rotated under slight force. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 An overall schematic diagram provided for an embodiment of the utility model;

[0014] Figure 2 An explosion diagram provided for an embodiment of the utility model;

[0015] Figure 3 Another explosion diagram provided for an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of the rod body and chuck structure provided in an embodiment of the utility model;

[0017] Figure 5 , 6 A schematic diagram of a chuck structure provided in an embodiment of the utility model;

[0018] Figure 7 , 8 An exploded view of a chuck provided in an embodiment of the utility model;

[0019] Fig. 9 An overall cross-sectional view provided for an embodiment of the utility model;

[0020] Fig.10 An enlarged view of a part A provided in an embodiment of the utility model;

[0021] Fig.11 An enlarged view of a part B provided in an embodiment of the utility model;

[0022] Fig.12 A horizontal cross-sectional view provided for an embodiment of the utility model;

[0023] Fig.13 An enlarged view of a local area C provided in an embodiment of the utility model;

[0024] Fig.14 A reference diagram of a non-working state of a chuck provided for an embodiment of the utility model;

[0025] Fig.15 A reference diagram of the working state of the chuck provided in the embodiment of the utility model;

[0026] Fig.16 A reference diagram of the usage status provided for an embodiment of the utility model.

[0027] Among them, the reference numerals in the figure are:

[0028] 1. Base; 11. Groove; 12. Protrusion (12); 2. Dumbbell plate; 21. Clamping hole; 3. Handle; 31. Shift plate; 311. Limiting groove; 32. Rod body; 4. Chuck; 41. Clamping column; 411. Bead; 412. Inner spring; 413. Outer spring; 42. Fixing piece; 43. Shift plate; 431. Sleeve; 4311. Positioning groove; 4312. Transmission shaft; 4313. Positioning plate; 432. Push block; 44. Carrying plate; 441. Reinforcement ring; 442. Reinforcement rib; 5. Fixing plate; 51. Fixing strip; 52. Fixing rod; 53. Locking block; 54. Elastic piece; 55. Limiting column; 56. Bolt.

[0029] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] The directional nouns involved in the embodiments of the present disclosure, such as "upper", "lower", "side", etc., are generally based on the relative directional relationship between the structures when the thermos cup or the cup cover is usually placed, and these directional nouns are used only to more clearly describe the relationship between the structures, not to describe the absolute directional. When the product is placed in different postures, the directional position may change, for example, "upper" and "lower" may be interchangeable.

[0032] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1-16 As shown, the embodiment of the present disclosure provides an adjustable dumbbell, including a base 1 for placing dumbbell plates 2, dumbbell plates 2, a shift plate 31, a plurality of chucks 4 mounted on a rod body 32, a handle 3, and a fixing plate 5 and a fixing bar 51 for fixing the plurality of chucks 4. Figure 2 , 3As shown, the handle 3 is rotatably sleeved in the middle of the rod body 32, and the handle 3 drives the shift plate 31 and then drives the shift plate 43 on the chuck 4 to rotate, so that the push block 432 of the shift plate 43 pushes the clamping column 41 out and clamps it into the clamping hole 21 of the dumbbell plate 2. The chuck 4 is symmetrically installed on the rod body 32, with at least two chucks 4 on each side, and the shift plates 43 of the chucks 4 on each side are mutually clamped. Figure 6 , 7 As shown in FIG. 8 , the chuck 4 also includes a carrier plate 44 and a fixing member 42. The carrier plate 44 is provided with at least two reinforcing rings 441, and a plurality of reinforcing ribs 442 are connected between the reinforcing rings 441. The clamping column 41 has two and is symmetrically installed between the reinforcing rings 441 and the reinforcing ribs 442 of the carrier plate 44. The fixing member 42 wraps and fixes the clamping column 41 on the carrier plate 44, and the bolt 56 fixes the fixing member 42 to the end of the rod body 32. Fig.13 , 14 As shown in Figure 15, an outer spring 413 is provided on the outer side of the clamping column 41 for rebounding the clamping column 41 to the recessed position of the shifting plate 43. An inner spring 412 and a bead 411 are also provided on the inner side of the clamping column 41. The inner spring 412 pops the bead 411 toward the side of the shifting plate 43 so that the bead 411 contacts the push block 432 of the shifting plate 43.

[0034] like Figure 3 , 4 As shown, the fixing plate 5 fixes the chucks 4 in series, and the fixing plates 5 at both ends are connected by fixing strips 51 and fixing rods 52 that penetrate the chucks 4, and a safety lock is provided at the bottom of the fixing plate 5 near the handle 3. Figure 3 , 11 As shown, the safety lock includes an elastic member 54 and a lock block 53. The elastic member 54 pops the lock block 53 toward the bottom. The bottom of the fixing plate 5 is provided with an opening that is connected to the lock block 53 from the outside. The base 1 is provided with a protrusion 12 corresponding to the opening. When the protrusion 12 is inserted into the opening and lifts the lock block 53, the lock block 53 is separated from the shift plate 31, and the handle 3 can be easily rotated. When the lock block 53 is pressed down and reset by the elastic member 54, the lock block 53 clamps the shift plate 31 so that the handle 3 cannot be rotated. The shift plate 31 is provided with a scale, and the two ends of the shift plate 31 are respectively clamped with the handle 3 and the shift plate 43 to transmit the rotation angle of the handle 3 to the shift plate 43.

[0035] like Figure 5 , 6As shown, the circumferential area occupied by the push blocks 432 of the shifting pieces 43 on the same side of the handle 3 increases in sequence from the direction close to the handle 3 to the direction away from the handle 3, and the push blocks 432 are symmetrically arranged on both sides of the sleeve 431, and the shifting pieces 43 on the same side are inserted into the sleeve 431 through the transmission shaft 4312 to realize transmission. A positioning groove 4311 is provided on the inner side of the sleeve 431, and a positioning piece 4313 is provided on the transmission shaft 4312. During installation, the positioning piece 4313 of the transmission shaft 4312 is inserted into the positioning groove 4311 to ensure that the installation angle between the chucks 4 is accurate.

[0036] like Fig. 9 As shown, the base 1 is provided with a plurality of grooves 11 for fixing the dumbbell plate 2. The dumbbell plate 2 is in a "U" shape, and the clamping hole 21 is located in the middle of the inner side of the dumbbell plate 2. When the chuck 4 clamps the dumbbell plate 2, the bottom of the chuck 4 abuts against the inner side of the dumbbell plate 2, and the clamping column 41 is inserted into the clamping hole 21.

[0037] like Figure 3 As shown, the circumference of the shift plate 31 is evenly distributed with limiting grooves 311, and a limiting column 55 is provided on the fixing plate 5 close to the handle 3. When the shift plate 31 rotates a certain angle, the limiting column 55 is inserted into the limiting groove 311 to limit the rotation of the shift plate 31 and the handle 3.

[0038] In order to have a more thorough and comprehensive understanding of the disclosed content of the utility model, the principle thereof is further explained below in combination with the usage method.

[0039] This exemplary embodiment uses a 25-pound dumbbell as an example. Figure 2 As shown, the dumbbell weighs only 5 pounds without dumbbell plates 2, and each additional 2 dumbbell plates adds 5 pounds. When the user needs to add dumbbell plates 2 to both ends of the handle 3, the handle 3 is first placed in the dumbbell plates 2, so that the safety lock of the fixing plate 5 close to the handle 3 is unlocked, that is, the protrusion 12 of the base 1 is inserted into the opening and the locking block 53 is pushed in, so that the locking block 53 is separated from the shift plate 31, and the handle 3 can be rotated at this time.

[0040] When the handle 3 is rotated, the handle 3 drives the shift plate 31 to rotate, and the shift plate 31 drives the shift plate 43 to rotate. If it is only rotated to the 10-pound position, due to the small rotation angle, except for the chuck 4 close to the handle 3, the chuck column 41 can be ejected, and the others are not ejected. When the handle 3 is picked up, two dumbbell plates 2 are brought up, that is, 10 pounds; when it is rotated to the 15-pound position again, Figure 6 , 16 As shown, at this time, four clamping columns 41 of the chucks 4 are pushed out by the push blocks 432 and inserted into the clamping holes 21 of the dumbbell plates 2. After picking up the dumbbell, the safety lock is reset under the elastic force of the elastic member 54, and the lock block 53 clamps the shift plate 31, so that the handle 3, the shift plate 31, and the shift plate 43 cannot rotate, thereby ensuring that the clamping columns 41 cannot be detached from the clamping holes 21 of the dumbbell plates 2.

[0041] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0042] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An adjustable dumbbell, characterized in that: The dumbbell plate (2) comprises a base (1) for placing a dumbbell plate (2), a shift plate (31), a plurality of chucks (4) mounted on a rod body (32), a handle (3), a fixing plate (5) for fixing the plurality of chucks (4), and a fixing strip (51); the handle (3) is rotatably sleeved in the middle of the rod body (32); the handle (3) drives the shift plate (31) and then drives the shift plate (43) on the chuck (4) to rotate, so that a push block (432) of the shift plate (43) pushes the clamping column (41) out and clamps it into a clamping hole (21) of the dumbbell plate (2); the chuck (4) is mounted on the rod body (32), at least two chucks (4) are provided on each side, and the stoppers (43) of the chucks (4) on each side are mutually engaged, the chucks (4) also include a carrier plate (44) and a fixing member (42), the carrier plate (44) is provided with at least two circles of reinforcing rings (441), and a plurality of reinforcing ribs (442) are connected between the reinforcing rings (441), the clamping column (41) has two and is symmetrically installed between the reinforcing rings (441) and the reinforcing ribs (442) of the carrier plate (44), and the fixing member (42) wraps the clamping column (41) and fixes it on the carrier plate (44).

2. An adjustable dumbbell according to claim 1, characterized in that: An outer spring (413) is provided on the outer side of the clamping column (41) for rebounding the clamping column (41) to a recessed position of the stop plate (43); an inner spring (412) and a bead (411) are also provided on the inner side of the clamping column (41); the inner spring (412) pops the bead (411) toward one side of the stop plate (43) so that the bead (411) contacts a push block (432) of the stop plate (43).

3. An adjustable dumbbell according to claim 1, characterized in that: The fixing plate (5) fixes the chucks (4) connected in series. The fixing plates (5) at both ends are connected by fixing strips (51) and fixing rods (52) penetrating the chucks (4). A safety lock is provided at the bottom of the fixing plate (5) close to the handle (3). The safety lock comprises an elastic member (54) and a locking block (53). The elastic member (54) ejects the locking block (53) toward the bottom. An opening is provided at the bottom of the fixing plate (5) for connecting the locking block (53) from the outside. A protrusion (12) corresponding to the opening is provided on the base (1). When the protrusion (12) is inserted into the opening and lifts the locking block (53), the locking block (53) is separated from the shift plate (31), and the handle (3) can be easily rotated. When the locking block (53) is pressed down and reset by the elastic member (54), the locking block (53) clamps the shift plate (31) so that the handle (3) cannot be rotated.

4. The adjustable dumbbell according to claim 1, characterized in that: The shift plate (31) is provided with a scale, and the two ends of the shift plate (31) are respectively engaged with the handle (3) and the shift plate (43), so that the rotation angle of the handle (3) is transmitted to the shift plate (43).

5. The adjustable dumbbell according to claim 1, characterized in that: The circumferential area occupied by the push blocks (432) of the shifting plates (43) on the same side of the handle (3) increases in sequence from the direction close to the handle (3) to the direction away from the handle (3), and the push blocks (432) are symmetrically arranged on both sides of the sleeve (431), and the shifting plates (43) on the same side are inserted into the sleeve (431) through the transmission shaft (4312) to realize transmission.

6. The adjustable dumbbell according to claim 1, characterized in that: The base (1) is provided with a plurality of grooves (11) for fixing the dumbbell plate (2); the dumbbell plate (2) is in a U-shape; the clamping hole (21) is located in the middle of the inner side of the dumbbell plate (2); when the chuck (4) is clamped with the dumbbell plate (2), the bottom of the chuck (4) abuts against the inner side of the dumbbell plate (2), and the clamping column (41) is inserted into the clamping hole (21).

7. The adjustable dumbbell according to claim 1, characterized in that: Limiting grooves (311) are evenly distributed on the circumference of the shift plate (31), and a limiting column (55) is provided on the fixing plate (5) close to the handle (3). When the shift plate (31) rotates a certain angle, the limiting column (55) is inserted into the limiting groove (311) to limit the rotation of the shift plate (31) and the handle (3).

Images