Dumbbell with adjustable balance weight

Abstract

The utility model relates to the field of fitness equipment, in particular to a dumbbell with adjustable balancing weights, which comprises a base, a dumbbell main body and a plurality of balancing weights, the dumbbell body comprises a center shaft rod, a grab handle connected to the center of the center shaft rod in a sleeving mode and balance weight units connected to the positions, at the two ends of the grab handle, of the center shaft rod. The balance weight unit comprises a balance weight frame fixed to the center shaft rod, a positioning rotary disc and a plurality of check discs, wherein the positioning rotary disc and the check discs are arranged in the balance weight frame. The grab handle, the positioning rotary disc and the multiple hooking discs are rotationally arranged on the center shaft rod and are in linkage in the circumferential direction, and the balancing weights can be clamped or loosened in the rotating process of the hooking discs so that the balancing weights can be assembled in the balance weight space or disengaged from the balance weight space. According to the scheme, weight adjusting rotating discs on the two sides of the dumbbell body are omitted, selection of the balancing weights can be controlled by rotating the grab handle, and therefore the weight of the dumbbell is adjusted; therefore, the structure of the dumbbell body can be simplified.

Description

Technical Field

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

[0002] Dumbbells, as an auxiliary equipment for weightlifting and fitness exercises, are simple in structure, easy to use, and can be used to enhance muscle strength training, making them very popular. Dumbbells are mainly of two types in the prior art: fixed-weight dumbbells and adjustable-weight dumbbells. The fixed-weight dumbbells require a set of dumbbells of different weights to meet the needs of the trainee; the adjustable-weight dumbbells are popular among athletes because of their adjustable weight.

[0003] For example, a Chinese utility model patent with the publication number "CN205867408U" describes a weight-adjustable dumbbell, comprising a plurality of dumbbell plates; a base at both ends for accommodating the dumbbell plates in an upright position; a grip portion in the middle, which automatically locks dumbbell plates of different weights to the two ends when rotated to different angles, leaving the remaining dumbbell plates in the base. The dumbbell bar includes a core shaft with a grip portion in the middle; a weight adjustment dial fixed to the end of the core shaft; and a plurality of cams at both ends of the core shaft, which respectively match the shape of each dumbbell plate and rotate with the weight adjustment dial to cause dumbbell plates of corresponding weights to engage their outer edges, thereby locking the dumbbell plates thereto. During use, the dumbbell plates are placed upright in the base, the dumbbell bar is placed on the dumbbell plates, and the weight adjustment dial is rotated, and the dumbbell plates of corresponding weights are locked to the dumbbell bar.

[0004] In this solution, a weight adjustment dial is required on the end of the dumbbell's core shaft, and the weight of the dumbbell plates can be adjusted by rotating the weight adjustment dial. Not only is the structure complicated, but the left and right sides of the dumbbell need to be adjusted separately, which is inconvenient. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a dumbbell with adjustable counterweight. This solution eliminates the weight adjustment dials on both sides of the dumbbell body, and instead controls the selection of the counterweight block by rotating the handle, thereby adjusting the dumbbell weight; this can simplify the structure of the dumbbell body.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] The dumbbell with adjustable counterweight comprises a base, a dumbbell body and a plurality of counterweight blocks; storage grooves are constructed on both sides of the upper end surface of the base, and the plurality of counterweight blocks are placed on the storage grooves of the base; it is characterized in that: the dumbbell body comprises a central shaft, a handle sleeved on the center of the central shaft, and a counterweight unit on the central shaft connected to both ends of the handle; the counterweight unit comprises a counterweight frame fixed on the central shaft, and a positioning turntable and a plurality of ticking disks arranged inside the counterweight frame; a counterweight space for clamping the counterweight block is formed between adjacent two ticking disks, and between the edge ticking disk and the positioning turntable or the counterweight frame; the handle, positioning turntable and the plurality of ticking disks are rotatably arranged on the central shaft and are circumferentially linked, and the ticking disk can clamp or release the counterweight block during rotation, so that the counterweight block is assembled in or disengaged from the counterweight space.

[0008] The utility model adopts the above-mentioned technical solution, which relates to a dumbbell with adjustable counterweight. The dumbbell body of the dumbbell with adjustable counterweight includes a central shaft, a handle, and a counterweight unit. A positioning turntable and a plurality of check disks are arranged between the counterweight frame of the counterweight unit. The handle, the positioning turntable, and the plurality of check disks are rotatably arranged on the central shaft and are circumferentially linked. That is, rotating the handle can control the synchronous rotation of the positioning turntable and the plurality of check disks. During the rotation of the check disk, the counterweight can be locked or released, so that the counterweight can be assembled in or disengaged from the counterweight space.

[0009] In this solution, the weight adjustment dials on both sides of the dumbbell body are eliminated. Instead, the weight block selection can be controlled by rotating the handle to adjust the dumbbell weight; this can simplify the structure of the dumbbell body.

[0010] In addition, this solution can also adjust the weights on both sides synchronously by rotating the handle, which can simplify the weight adjustment process.

[0011] In a specific embodiment, the counterweight frame includes an outer end plate, an inner end plate, and a connecting bridge for connecting the outer and inner end plates. The central shaft passes through the center of the inner end plate and its end is fixedly connected to the center of the outer end plate. The positioning turntable and multiple checker plates are rotatably arranged on the central shaft between the inner and outer end plates. In this solution, the outer and inner end plates of the counterweight frame are connected together by the connecting bridge. The central shaft then passes through the inner end plate and is fixedly connected to the outer end plate. The central shaft connects the counterweight frames on both sides of the handle together, forming a stable frame structure.

[0012] In a specific embodiment, the ticking disc has a curved ridge on at least one surface, which is arranged unclosed along the circumference of the disc. A positioning bump protruding from one end of the surface of the counterweight is provided on one side of the disc. When the ticking disc is selected and the positioning bump is positioned above the curved ridge, the ticking disc engages the counterweight. During rotation of the ticking disc, the curved ridge rotates with the disc. When the curved ridge rotates below the positioning bump, the dumbbell body is lifted upward, causing the curved ridge to support the positioning bump, thereby engaging the counterweight.

[0013] In a further solution, the counterweight unit further includes a spacer disc disposed between the two ticking discs, with a counterweight space formed between the spacer disc and the ticking discs on either side; each ticking disc has arcuate ridges on both sides. In this solution, a spacer disc is disposed between the two ticking discs, separating the counterweight space between the ticking discs on both sides. Compared to the ticking discs, the spacer disc used in this solution does not need to be provided with arcuate ridges, thereby simplifying the structure and reducing costs. However, in order to enable the counterweight space between the spacer disc and the ticking disc to be clamped with the counterweight block, each ticking disc is required to have arcuate ridges on both sides.

[0014] In a specific solution, a groove is provided on one side of the counterweight, and the positioning protrusion is fixed in the groove. In this solution, the positioning protrusion can be embedded in the groove by a screw-fixing component.

[0015] Preferably, docking rings are provided at the center of the positioning disc, the selection disc, and the spacer disc, as well as at both ends of the handle; adjacent docking rings are provided with circumferentially intermeshing tooth-groove structures. In this embodiment, the handle, positioning disc, selection disc, and spacer disc are circumferentially intermeshed through the circumferential intermeshing of the tooth-groove structures to achieve circumferential linkage.

[0016] In another alternative, the handle includes relatively movable left and right grips. The left grip is circumferentially linked to the positioning dial and multiple selector discs of the left counterweight unit; the right grip is circumferentially linked to the positioning dial and multiple selector discs of the right counterweight unit. In this alternative, the handle is divided into relatively movable left and right grips. During use, the weight of the counterweights on both sides can be adjusted separately by operating the left and right grips. This differs from the aforementioned approach, which uses the handle to adjust both counterweights simultaneously.

[0017] In a further embodiment, a flange extends outward from the edge of the inner end disc, with the positioning dial positioned within the flange. In this embodiment, the flange covers the positioning dial, preventing interference with its rotation or positioning. Furthermore, a gear position indicator is provided on the outer wall of the positioning dial, and a gear position hole is provided on the flange of the inner end disc or on the connecting bridge, through which the gear position indicator is exposed. During the coordinated rotation of the positioning dial and the checkbox disc, the gear position indicator on the positioning dial can be observed through the gear position hole, thereby indicating the current counterweight weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the dumbbell structure involved in the present invention.

[0019] Figure 2 This is a schematic diagram of the dumbbell body being removed from the base.

[0020] Figure 3 Schematic diagram of the structure of the dumbbell body.

[0021] Figure 4 This is an exploded view of the structure of one side of the dumbbell body.

[0022] Figure 5 The present invention is a cross-sectional view of the dumbbell structure involved.

[0023] Figure 6 Schematic diagram of the structure of the counterweight.

[0024] Figure 7 A schematic diagram of the base structure. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] like Figures 1 to 7As shown, this embodiment relates to a dumbbell with adjustable counterweights, comprising a base 1, a dumbbell body 2, and a plurality of counterweights 3. Receiving slots 10 are constructed on both sides of the upper end surface of the base 1, and the plurality of counterweights 3 are placed in the receiving slots 10 of the base 1. The dumbbell body 2 includes a central shaft 21, a handle 22 that is sleeved on the center of the central shaft 21, and a counterweight unit connected to the central shaft 21 at both ends of the handle 22. The counterweight unit includes a counterweight frame 23 fixed to the central shaft 21, a positioning dial 24 and a plurality of check discs 25 disposed within the counterweight frame 23. The counterweight frame 23 is constructed with a locking assembly for locking or unlocking the positioning dial 24. Counterweight spaces 20 for receiving the counterweights 3 are formed between two adjacent check discs 25, and between the edge check discs 25 and the positioning dial 24 or the counterweight frame 23. The handle 22, positioning dial 24, and multiple ticking discs 25 are rotatably mounted on the central shaft 21 and are circumferentially linked. During rotation, the ticking disc 25 can engage or disengage the counterweight 3, allowing the counterweight 3 to be assembled into or disengaged from the counterweight space 20. The dumbbell body 2 of the adjustable weight dumbbell comprises a central shaft 21, a handle 22, and a counterweight unit. The positioning dial 24 and multiple ticking discs 25 are disposed between the counterweight frame 23 of the counterweight unit. The handle 22, positioning dial 24, and multiple ticking discs 25 are rotatably mounted on the central shaft 21 and are circumferentially linked. Rotating the handle 22 controls the synchronous rotation of the positioning dial 24 and multiple ticking discs 25. During rotation, the ticking disc 25 can engage or disengage the counterweight 3, allowing the counterweight 3 to be assembled into or disengaged from the counterweight space 20.

[0031] In this solution, the weight adjustment dials on both sides of the dumbbell body are eliminated. Instead, the weight of the dumbbell can be adjusted by rotating the handle 22 to control the selection of the counterweight 3. This simplifies the structure of the dumbbell body. In addition, this solution allows the counterweights on both sides to be adjusted simultaneously by rotating the handle 22, thus simplifying the weight adjustment process.

[0032] In a specific embodiment, the counterweight frame 23 includes an outer end plate 231, an inner end plate 232, and a connecting bridge 233 for connecting the outer end plate 231 and the inner end plate 232 together. The central shaft 21 passes through the center of the inner end plate 232 and its end is fixedly connected to the center of the outer end plate 231. The positioning turntable 24 and the multiple check plates 25 are rotatably arranged on the central shaft 21 between the inner end plate 232 and the outer end plate 231. In the scheme here, the outer end plate 231 and the inner end plate 232 in the counterweight frame 23 are connected together by the connecting bridge 233, and then the central shaft 21 passes through the inner end plate 232 and is fixedly connected to the outer end plate 231. The counterweight frames 23 on both sides of the handle 22 can be connected together through the central shaft 21, thereby forming a stable frame structure.

[0033] like Figure 4 and 6 In the specific scheme shown, an arcuate ridge 251 is constructed on at least one disk surface of the ticking disk 25, and the arcuate ridge 251 is not closed along the circumference of the disk body of the ticking disk 25. A positioning protrusion 31 protruding from the end surface is provided on one side disk surface of the counterweight 3. In the specific scheme, a groove is provided on one side disk surface of the counterweight 3, and the positioning protrusion 31 is fixed in the groove. In this scheme, the positioning protrusion 31 can be embedded in the groove by a screw-fixing component. When the ticking disk 25 is selected to when the positioning protrusion 31 is supported on the top of the arcuate ridge 251, the ticking disk 25 clamps the counterweight 3. During the rotation of the ticking disk 25, the arcuate ridge 251 rotates with the disk body. When the arcuate ridge 251 rotates to below the positioning protrusion 31. Lifting the dumbbell body 2 upward causes the curved ridge 251 to support the positioning protrusion 31, thereby allowing the check plate 25 to engage the counterweight 3. In a further embodiment, the counterweight unit further includes a spacer plate 27 disposed between the two check plates 25, with the spacer plate 27 and the check plates 25 on either side also forming a counterweight space 20. Each check plate 25 has a curved ridge 251 on both surfaces. In this embodiment, a spacer plate 27 is disposed between the two check plates 25, separating the counterweight space 20 between the check plates 25 on either side. Compared to the check plates 25, the spacer plate 27 employed in this embodiment does not require the curved ridge 251, thereby simplifying the structure and reducing costs. However, in order to ensure that the counterweight space 20 between the spacer plate 27 and the check plates 25 can engage the counterweight 3, each check plate 25 is required to have a curved ridge 251 on both surfaces. In this solution, the position and arc length of the arc-shaped ridge 251 on the ticking plate 25 are not exactly the same, and can be designed according to the adjustment solution, so that the counterweight can be adjusted according to the rotation angle. That is, by rotating the angle of the ticking plate 25, it is possible to achieve whether to hook or disengage any counterweight block 3, so that each counterweight block 3 can be independently selected.

[0034] like Figure 4 As shown, docking rings 26 are provided at the center of the positioning turntable 24, the ticking disk 25, and the spacer disk 27, as well as on both ends of the handle 22. A tooth-groove structure 261 that meshes circumferentially with each other is constructed on two adjacent docking rings 26. In this solution, the handle 22, the positioning turntable 24, the ticking disk 25, and the spacer disk 27 are circumferentially meshed with each other through the tooth-groove structure 261 to achieve circumferential linkage. As shown in the figure, the tooth-groove structure 261 includes protrusions arranged circumferentially on the outer wall of one end, and grooves arranged circumferentially on the inner wall of the other end.

[0035] like Figure 1 and 5As shown, a flange 234 is constructed on the edge of the inner end disk 232 extending outward, and the positioning turntable 24 is located on the inner side of the flange 234. In the scheme here, the flange 234 is used to cover the positioning turntable 24 to prevent the rotation or positioning of the positioning turntable 24 from being interfered with. In addition, a gear mark is provided on the outer wall surface of the positioning turntable 24, and a gear through-hole 235 for exposing the gear mark is constructed on the flange 234 of the inner end disk 232 or on the connecting bridge 233. During the coordinated rotation of the positioning turntable 24 and the check disk 25, the gear mark on the positioning turntable 24 can leak out of the gear through-hole 235 and be observed, thereby indicating the current counterweight weight. The above-mentioned inner end disk 232 is provided with a locking component 4 for locking or unlocking the positioning turntable 24, including but not limited to the locking scheme recorded in the prior patent with the announcement number "CN205867408U". It can also be as follows Figure 5 and 7 As shown, an unlocking component 13 is provided on the upper end surface of the base 1; when the dumbbell body 2 is placed on the base 1, the unlocking component 13 acts on the locking assembly to drive the locking assembly to unlock. In this solution, the locking assembly on the counterweight frame 23 can be used to lock or unlock the positioning turntable 24, thereby controlling the circumferential movement or locking of the positioning turntable 24 and its linked check disk 25. In addition, the unlocking component 13 is provided on the upper end surface of the base 1, so that only when the dumbbell body 2 is placed on the base 1, the locking component is unlocked, and the counterweight can be rotated to adjust. When the dumbbell body 2 is removed from the base 1, the positioning turntable 24 and its linked check disk 25 are locked, thereby ensuring safe use.

[0036] In another alternative, the handle 22 includes relatively movable left and right grips. The left grip is circumferentially linked to the positioning dial 24 and multiple selector discs 25 of the left counterweight unit. The right grip is circumferentially linked to the positioning dial 24 and multiple selector discs 25 of the right counterweight unit. In this alternative, the handle 22 is divided into relatively movable left and right grips. During use, the weight of the counterweights on both sides can be adjusted separately by operating the left and right grips. This differs from the aforementioned alternative, which uses the handle 22 to adjust the counterweights on both sides simultaneously.

[0037] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A dumbbell with adjustable counterweight, comprising a base (1), a dumbbell body (2) and a plurality of counterweight blocks (3); receiving grooves (10) are constructed on both sides of the upper end surface of the base (1), and the plurality of counterweight blocks (3) are placed on the receiving grooves (10) of the base (1); characterized in that: The dumbbell body (2) includes a central shaft (21), a handle (22) sleeved on the center of the central shaft (21), and a counterweight unit connected to the central shaft (21) at both ends of the handle (22); the counterweight unit includes a counterweight frame (23) fixed on the central shaft (21), and a positioning turntable (24) and a plurality of ticking disks (25) arranged inside the counterweight frame (23); between two adjacent ticking disks (25), and at the edges thereof. A counterweight space (20) for clamping a counterweight (3) is formed between the ticking disc (25) and the positioning turntable (24) or the counterweight frame (23); the handle (22), the positioning turntable (24) and the plurality of ticking discs (25) are rotatably arranged on the central shaft (21) and are circumferentially linked to each other. During the rotation of the ticking disc (25), the counterweight (3) can be clamped or released, so that the counterweight (3) is assembled in the counterweight space (20) or disengaged from the counterweight space (20).

2. The dumbbell with adjustable weight according to claim 1, characterized in that: The counterweight frame (23) includes an outer end disc (231), an inner end disc (232), and a connecting bridge (233) for connecting the outer end disc (231) and the inner end disc (232); the central shaft (21) passes through the center of the inner end disc (232) and its end is fixedly connected to the center of the outer end disc (231); the positioning turntable (24) and the plurality of ticking discs (25) are rotatably arranged on the central shaft (21) between the inner end disc (232) and the outer end disc (231).

3. The dumbbell with adjustable weight according to claim 1, characterized in that: An arcuate ridge (251) is constructed on at least one disk surface of the ticking disk (25), and the arcuate ridge (251) is not closed along the circumference of the disk body of the ticking disk (25); a positioning protrusion (31) protruding from the end surface is provided on one side disk surface of the counterweight (3); when the ticking disk (25) is selected and the positioning protrusion (31) is supported on the upper part of the arcuate ridge (251), the ticking disk (25) clamps the counterweight (3).

4. The dumbbell with adjustable weight according to claim 3, characterized in that: The counterweight unit further includes a spacer disc body (27) arranged between the two ticking discs (25), and a counterweight space (20) is formed between the spacer disc body (27) and the ticking discs (25) on both sides thereof; arc-shaped ridges (251) are constructed on both disc surfaces of each ticking disc (25).

5. The dumbbell with adjustable weight according to claim 3, characterized in that: A groove is provided on one side of the disk surface of the counterweight (3), and the positioning protrusion (31) is fixed in the groove.

6. The dumbbell with adjustable weight according to claim 4, characterized in that: The positioning turntable (24), the ticking disk (25), the spacer disk (27) are provided with docking rings (26) at the center of the disk body, and at both ends of the handle (22); and two adjacent docking rings (26) are constructed with circumferentially meshed tooth groove structures (261).

7. The dumbbell with adjustable weight according to claim 1, characterized in that: The handle (22) includes a left grip and a right grip that are relatively movable. The left grip is circumferentially linked to the positioning turntable (24) and the plurality of ticking discs (25) of the left counterweight unit; and the right grip is circumferentially linked to the positioning turntable (24) and the plurality of ticking discs (25) of the right counterweight unit.

8. The dumbbell with adjustable weight according to claim 2, characterized in that: A flange (234) is formed on the edge of the inner end disc (232) extending outward, and the positioning turntable (24) is located inside the flange (234); a gear mark is provided on the outer wall surface of the positioning turntable (24), and a gear through hole (235) for exposing the gear mark is formed on the flange (234) of the inner end disc (232) or on the connecting bridge (233).

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