Dumbbell capable of smoothly adjusting weight

Abstract

The utility model relates to a dumbbell capable of smoothly adjusting weight. The dumbbell 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 central shaft rod penetrates through the inner end part of the counterweight frame, and the shaft end of the central shaft rod is rotationally positioned on the outer end part of the counterweight frame; the grab handle, the positioning turntable and the plurality of check discs are sleeved on the outer side of the central shaft rod and are linked with the circumferential direction of the central shaft rod; the check disc can clamp or loosen the balancing weight in the rotating process, so that the balancing weight is assembled in the balancing weight space or disengaged from the balancing weight space. When the dumbbell is used for weight adjustment, only friction exists between the end of the center shaft rod and the outer end of the balance weight frame, so that friction force is greatly reduced, and adjustment is smoother.

Description

Technical Field

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

[0002] Dumbbells, as an auxiliary equipment for weightlifting and fitness exercises, are simple in structure and easy to use. They can be used to enhance muscle strength training, so they are very popular. There are two main types of dumbbells in the prior art: one is a dumbbell with fixed weight, and the other is a dumbbell with adjustable weight. When using the former dumbbell with fixed weight, a set of dumbbells of different weight specifications must be prepared to meet the needs of the trainer; the latter is deeply loved by sports trainers because the weight can be adjusted.

[0003] For example, a Chinese utility model patent with the announcement number "CN205867408U" records a weight-adjustable dumbbell, which includes a plurality of dumbbell plates; a base with two ends for accommodating dumbbell plates placed upright; a gripping portion in the middle, which automatically locks dumbbell plates of different weights to the two ends when rotating at different angles, and the remaining dumbbell plates are left on a dumbbell rod in the base. The dumbbell rod includes a mandrel with a gripping portion in the middle; a weight adjustment dial fixed to the end of the mandrel; and a plurality of cam plates arranged at both ends of the mandrel, which match the shapes of the dumbbell plates respectively and rotate with the weight adjustment dial so that the dumbbell plates of corresponding weights are stuck to their outer edges, thereby locking the dumbbell plates thereon. When in use, the dumbbell plates are placed upright in the base, the dumbbell rod is placed on the dumbbell plates, and the weight adjustment dial is turned, so that the dumbbell plates of corresponding weights are locked to the dumbbell rod.

[0004] In this scheme, a weight adjustment dial needs to be provided on the end of the core shaft of the dumbbell, and the weight of the dumbbell plate 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.

[0005] On this basis, the applicant of this case previously submitted a Chinese invention patent application document with the application number "2024109737661". This solution relates to an adjustable-weight dumbbell, which includes a base, a dumbbell body, and multiple weight plates; the dumbbell body includes a central shaft rod, a handle sleeved on the center of the central shaft rod, and a weight unit connected to the central shaft rod at both ends of the handle; the weight unit includes a weight frame fixed on the central shaft rod, and a positioning turntable and multiple check disks arranged inside the weight frame; the handle, the positioning turntable, and the multiple check disks are rotatably arranged on the central shaft rod and are circumferentially linked. During the rotation of the check disk, it can catch or release the weight plate, so that the weight plate is assembled in the weight space or disengaged from the weight space. This solution cancels the weight adjustment turntables on both sides of the dumbbell body and instead controls the selection of the weight plate by rotating the handle, thereby adjusting the weight of the dumbbell; in this way, the structure of the dumbbell body can be simplified. However, in this solution, the friction between the handle, the positioning turntable, and the multiple check disks relative to the central shaft rod is relatively large, and it is more laborious for the user to adjust the weight. Summary of the Invention

[0006] In order to solve the above problems, the purpose of the present utility model is to provide an adjustable-weight dumbbell that can be smoothly adjusted. When adjusting the weight of the dumbbell in this solution, there is only friction between the end of the central shaft rod and the outer end of the weight frame, so the friction is greatly reduced and the adjustment is smoother.

[0007] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] An adjustable-weight dumbbell that can be smoothly adjusted, including a base, a dumbbell body, and multiple weight plates; on both sides of the upper end surface of the base, storage grooves are constructed, and multiple weight plates are placed on the storage grooves of the base; it is characterized in that: the dumbbell body includes a central shaft rod, a handle sleeved on the center of the central shaft rod, and a weight unit connected to the central shaft rod at both ends of the handle; the weight unit includes a weight frame fixed on the central shaft rod, and a positioning turntable and multiple check disks arranged inside the weight frame; a locking component for locking or unlocking the positioning turntable is constructed on the weight frame; a weight space for inserting the weight plate is formed between adjacent two check disks, and between the outermost check disk and the positioning turntable or the weight frame; the inner end of the central shaft rod passes through the weight frame and its shaft end is rotatably positioned on the outer end of the weight frame, and the handle, the positioning turntable, and the multiple check disks are sleeved outside the central shaft rod and are circumferentially linked with it; during the rotation of the check disk, it can catch or release the weight plate, so that the weight plate is assembled in the weight space or disengaged from the weight space.

[0009] The utility model adopts the above technical solution, which relates to a dumbbell with adjustable weights. The dumbbell body in the dumbbell with adjustable weights includes a central shaft rod, a handle, and a weight unit. A positioning turntable and multiple check disks are arranged in the weight frame of the weight unit. Rotating the handle can control the synchronous rotation of the positioning turntable and multiple check disks. During the rotation of the check disks, the weight blocks can be clamped or released, so that the weight blocks are assembled in or disengaged from the weight space.

[0010] In this solution, the weight adjustment turntables on both sides of the dumbbell body are cancelled, and the selection of the weight blocks can be controlled by rotating the handle, so as to adjust the weight of the dumbbell; in this way, the structure of the dumbbell body can be simplified.

[0011] On this basis, compared with the prior application case with the application number "2024109737661", the difference of this solution is that: the central shaft rod in the prior application case with the application number "2024109737661" is fixedly arranged, and the resistance is relatively large when the handle, the positioning turntable and multiple check disks rotate relative to the central shaft rod, so the adjustment is more laborious. In this solution: the inner end of the central shaft rod passes through the weight frame and its shaft end is rotationally positioned on the outer end of the weight frame, and the handle, the positioning turntable and multiple check disks are sleeved outside the central shaft rod and are circumferentially linked with it; that is to say, the central shaft rod in this solution is rotationally arranged, and the central shaft rod, the handle, the positioning turntable and multiple check disks rotate synchronously in the circumferential direction.

[0012] When adjusting the weight of the dumbbell in this solution, only the friction exists between the end of the central shaft rod and the outer end of the weight frame, so the friction force is greatly reduced and the adjustment is smoother.

[0013] Such a solution can also synchronously adjust the weights on both sides by rotating the handle, so as to simplify the weight adjustment process.

[0014] In a specific implementation, the weight frame includes an outer end plate, an inner end plate, and a connecting bridge for connecting the outer end plate and the inner end plate together; the central shaft rod passes through the central hole of the inner end plate and its shaft end is rotationally connected to the center of the outer end plate; the positioning turntable and multiple check disks are sleeved on the central shaft rod between the inner end plate and the outer end plate, and both ends of the handle are circumferentially linked with the positioning turntable and multiple check disks in sequence. In this solution, the outer end plate and the inner end plate in the weight frame are connected together by the connecting bridge, and the central shaft rod passes through the central hole of the inner end plate and its shaft end is rotationally connected to the center of the outer end plate. In this way, on the one hand, the central shaft rod is rotationally arranged on the weight frame, and on the other hand, it axially tightens the weight frames on both sides, so as to form a stable frame structure.

[0015] In the first embodiment, both end portions of the handle pass through the central holes of the inner end disks on both sides and are circumferentially meshed and linked with the adjacent positioning turntable or ticking disk. This solution can refer to the prior application case with the application number "2024109737661".

[0016] In the second embodiment, a bushing is sleeved on the central shaft rod in the central hole of the inner end disk. The inner end of the bushing is meshed and circumferentially linked with the end of the handle, and the outer end of the bushing is meshed and circumferentially linked with the adjacent positioning turntable or ticking disk; the outer circumferential wall surface of the bushing is rotationally matched with the inner wall surface of the central hole of the inner end disk. In this solution, a bushing is arranged in the central hole of the inner end disk. The bushing connects the inner handle and the outer positioning turntable or ticking disk. By rotating the bushing and the central hole of the inner end disk, the friction is reduced.

[0017] Furthermore, the following two solutions can also be adopted. In the first solution, the end of the handle or the outer end of the bushing is circumferentially meshed and linked with the positioning turntable, and the positioning turntable is sequentially circumferentially meshed and linked with multiple ticking disks inside it.

[0018] In the second solution, the multiple ticking disks are sequentially circumferentially meshed and linked. Multiple protrusions axially extend from the inner end of the outermost ticking disk. The ends of the protrusions pass through the through holes on the positioning turntable and are inserted into the end of the handle or the outer end of the bushing to achieve circumferential linkage; the protrusions drive the positioning turntable to circumferentially link. This solution can be understood as that the end of the handle or the outer end of the bushing is circumferentially linked with the outermost ticking disk, and the positioning turntable is sleeved on the protrusions and linked together.

[0019] In the above solutions, the meshing structure can adopt a mutually matching tooth groove structure.

[0020] Preferably, a gear position mark is arranged on the outer side wall surface of the positioning turntable and / or the outer side wall surface of the ticking disk, and a gear position through hole for the gear position mark to be exposed is constructed on the connecting bridge. During the linked rotation of the positioning turntable and the ticking disk, the gear position mark on the positioning turntable or the ticking disk can leak out from the gear position through hole and be observed, so as to represent the current counterweight weight.

[0021] Preferably, pressing components are fixedly connected to both ends of the central shaft rod. The pressing components on both sides axially press the multiple ticking disks, the positioning turntable, the bushing and the handle and are circumferentially linked with the central shaft rod; the pressing components are located inside the outer end disks of the counterweight frames on both sides, and at least part of the end of the central shaft rod extends out of the pressing components and is rotationally positioned at the center of the outer end disk. The pressing components here can be nuts. After the pressing components on both sides are connected to both ends of the central shaft rod, the ticking disks, the positioning turntable, the bushing and the handle between them are pressed, so that they can be linked with the central shaft rod together. The extended part of the end of the central shaft rod is used for rotational support on the outer end disk.

[0022] Furthermore, a groove is provided at the center of the outer end surface of the outer end plate, and the end of the central shaft rod is inserted into the groove at the center of the outer end plate and axially fixed by bolts; a cover is detachably provided on the groove. Here, the end of the central shaft rod is axially fixed by bolts, so that the central shaft rod and the outer end plate are axially tightened, and then the cover is closed on the groove to achieve a covering and beautiful effect.

[0023] Preferably, the inner end plate is further provided with an elastic pin assembly, and the positioning turntable is further provided with a plurality of positioning holes along its circumference; when the positioning turntable rotates, the steel balls on the elastic pin assembly can be inserted into or removed from the positioning holes. The cooperation between the elastic pin assembly and the plurality of positioning holes can provide feedback to the user on the sound of the steel balls being inserted into the positioning holes, so that the user knows that the adjustment has been completed.

[0024] Preferably, the locking assembly is fixed on the inner end disk, and the positioning turntable is constructed with a plurality of locking holes along its circumference. The locking assembly is inserted into any of the locking holes to lock the positioning turntable relative to the inner end disk. A cover body is fixedly connected to the end surface of the inner end disk facing the positioning turntable, and the locking assembly includes a locking block, an unlocking block and a locking spring in the cover body. The locking spring is supported on the locking block, and the locking block is provided with a locking shaft extending from the cover body. The unlocking block is slidably arranged on the inner end disk and wedge-matched with the locking block. When the dumbbell body is placed on the base, the unlocking component on the base acts on the unlocking block and drives the locking shaft on the locking block to retract by means of inclined surface pressure. In the scheme here, the locking assembly on the counterweight frame can be used to lock or unlock the positioning turntable, thereby controlling the circumferential movement or locking of the positioning turntable and its linked ticking disk. In addition, the unlocking component is arranged on the upper end surface of the base, so that only when the dumbbell body is placed on the base, the locking assembly is unlocked, and the counterweight can be rotated to adjust. When the dumbbell body is removed from the base, the positioning turntable and its linked ticking disk are locked. Specifically, only under the effect of the locking spring, the lock shaft on the locking block extends out of the cover body and clamps the positioning rotating disk. When an external force acts on the unlocking block, the unlocking block slides and the inclined surface squeezes the locking block to unlock.

[0025] Preferably, at least one disk surface of the ticking disk is constructed with an arc-shaped ridge, and the arc-shaped ridge is not closed along the circumference of the disk body of the ticking disk; a positioning protrusion protruding from the end surface is provided on one side disk surface of the counterweight block; when the ticking disk is selected to the point where the positioning protrusion is supported on the top of the arc-shaped ridge, the ticking disk clamps the counterweight block. During the rotation of the ticking disk, the arc-shaped ridge rotates with the disk body. When the arc-shaped ridge rotates to below the positioning protrusion. Pulling the dumbbell body upwards can make the arc-shaped ridge support the positioning protrusion upward, so that the ticking disk clamps the counterweight block.

[0026] Preferably, anti - detachment teeth are circumferentially and spacedly arranged along the edge of the positioning turntable, and a detachment opening is formed between two adjacent anti - detachment teeth; an anti - detachment hook is arranged on the base. When the ticking disc and the counterweight are not fully engaged or released, the anti - detachment hook engages with the anti - detachment teeth; when the selection disc and the counterweight are fully engaged or released, the anti - detachment hook and the anti - detachment teeth are released and can be separated from the detachment opening. The innovation of this solution lies in: an anti - detachment hook is arranged on the base, and through the cooperation of the anti - detachment hook and the edge structure of the positioning turntable, it is ensured that the positioning turntable and its linked ticking disc are adjusted in place (including fully engaging or releasing the counterweight), which can ensure that the ticking disc is firmly connected to the counterweight; if not adjusted in place, the dumbbell body cannot be detached from the base by the engagement of the anti - detachment hook and the anti - detachment teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic diagram of the dumbbell structure related to the present invention.

[0028] Figure 2 FIG. is a schematic diagram of the separated state of the dumbbell body and multiple counterweights in the dumbbell from the base.

[0029] Figure 3 FIG. is a three - dimensional structure schematic diagram of the dumbbell body.

[0030] Figure 4 FIG. is a structural sectional view of the dumbbell body.

[0031] Figure 5 For Figure 4 partial enlarged view of

[0032] Figure 6 FIG. is a partial exploded view of the dumbbell body.

[0033] Figure 7 FIG. is a partial assembly schematic diagram of the dumbbell body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the 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 thus should not be construed as a limitation to the present utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0037] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0039] Such as Figures 1 to 7As shown in the figure, the present embodiment aims to provide a dumbbell that can smoothly adjust its weight, including a base 1, a dumbbell body 2, and multiple weight blocks 3. On both sides of the upper end surface of the base 1, storage grooves 11 are constructed, and multiple weight blocks 3 are placed on the storage grooves 11 of the base 1. The dumbbell body 2 includes a central shaft rod 21, a grip 22 sleeved on the center of the central shaft rod 21, and a weight unit connected to the central shaft rod 21 at both ends of the grip 22. The weight unit includes a weight frame 23 fixed on the central shaft rod 21, and a positioning turntable 24 and multiple ticking plates 25 arranged inside the weight frame 23. A locking component for locking or unlocking the positioning turntable 24 is constructed on the weight frame 23. A weight space for inserting the weight block 3 is formed between two adjacent ticking plates 25, and between the ticking plate 25 at the edge and the positioning turntable 24 or the weight frame 23. The inner end of the central shaft rod 21 passes through the weight frame 23, and its shaft end is rotationally positioned on the outer end of the weight frame 23. The grip 22, the positioning turntable 24, and multiple ticking plates 25 are sleeved on the outside of the central shaft rod 21 and are circumferentially linked with it.

[0040] During the rotation of the ticking plate 25, it can catch or release the weight block 3, so that the weight block 3 is assembled in the weight space or disengaged from the weight space. Specifically, as Figure 6 shown, on at least one surface of the disc body of the ticking plate 25, arc-shaped convex ribs 251 are constructed, and the arc-shaped convex ribs 251 are not closed along the circumferential direction of the disc body of the ticking plate 25. On one side surface of the weight block 3, a positioning convex block 31 protruding from this end surface is provided. When the ticking plate 25 rotates to the position where the positioning convex block 31 is received above the arc-shaped convex rib 251, the ticking plate 25 catches the weight block 3. During the rotation of the ticking plate 25, the arc-shaped convex rib 251 rotates together with the disc body. When the arc-shaped convex rib 251 rotates to below the positioning convex block 31. By lifting the dumbbell body 2 upward, the arc-shaped convex rib 251 can support the positioning convex block 31 upward, so that the ticking plate 25 catches the weight block 3.

[0041] The dumbbell body 2 in the above dumbbell includes a central shaft rod 21, a grip 22, and a weight unit. In the weight frame 23 of the weight unit, a positioning turntable 24 and multiple ticking plates 25 are arranged. By rotating the grip 22, the positioning turntable 24 and multiple ticking plates 25 can be controlled to rotate synchronously. During the rotation of the ticking plate 25, it can catch or release the weight block 3, so that the weight block 3 is assembled in the weight space or disengaged from the weight space. In this solution, the weight adjustment turntables on both sides of the dumbbell body are cancelled, and by rotating the grip 22, the selection of the weight block 3 can be controlled, thereby adjusting the weight of the dumbbell. In this way, the structure of the dumbbell body can be simplified.

[0042] On this basis, compared with the prior application case with the application number "2024109737661", the difference of this solution is that: the central shaft rod 21 in the prior application case with the application number "2024109737661" is fixedly arranged, and the resistance is relatively large when the handle 22, the positioning turntable 24 and multiple ticking discs 25 rotate relative to the central shaft rod 21, so the adjustment is relatively laborious. In this solution: the inner end of the central shaft rod 21 passes through the inner end of the counterweight frame 23 and its shaft end is rotationally positioned on the outer end of the counterweight frame 23, and the handle 22, the positioning turntable 24 and multiple ticking discs 25 are sleeved outside the central shaft rod 21 and are circumferentially linked with it. That is to say, the central shaft rod 21 in this solution is rotationally arranged, and the central shaft rod 21, the handle 22, the positioning turntable 24 and multiple ticking discs 25 rotate synchronously in the circumferential direction. When the dumbbell of this solution is adjusted in weight, only the friction exists between the end of the central shaft rod 21 and the outer end of the counterweight frame 23, so the friction force is greatly reduced and the adjustment is smoother. Such a solution can also synchronously adjust the counterweights on both sides by rotating the handle 22, so that the weight adjustment process can be simplified.

[0043] In a specific implementation, 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 rod 21 passes through the central hole of the inner end plate 232 and its shaft end is rotationally connected to the center of the outer end plate 231. The positioning turntable 24 and multiple ticking discs 25 are sleeved on the central shaft rod 21 between the inner end plate 232 and the outer end plate 231, and the two ends of the handle 22 are circumferentially linked with the positioning turntable 24 and multiple ticking discs 25 in sequence. In this solution, 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 the central shaft rod 21 passes through the central hole of the inner end plate 232 and its shaft end is rotationally connected to the center of the outer end plate 231. In this way, on the one hand, the central shaft rod 21 is rotationally arranged on the counterweight frame 23, and on the other hand, it axially tightens the counterweight frames 23 on both sides, so as to form a stable frame structure.

[0044] The linkage structure between the handle 22 and the ticking disc 25 can adopt the following two solutions:

[0045] In the first implementation, the two ends of the handle 22 partially pass through the central holes of the inner end plates 232 on both sides and are circumferentially meshed and linked with the adjacent positioning turntable 24 or ticking disc 25. This solution can refer to the prior application case with the application number "2024109737661".

[0046] The second implementation is as Figure 4 and 7As shown, a shaft sleeve 26 is sleeved on a central shaft rod 21 in the central hole of the inner end plate 232. The inner end of the shaft sleeve 26 is meshed with the end of the handle 22 for circumferential linkage, and the outer end of the shaft sleeve 26 is circumferentially meshed and linked with the adjacent positioning turntable 24 or ticking plate 25. The outer circumferential wall surface of the shaft sleeve 26 is rotationally matched with the inner wall surface of the central hole of the inner end plate 232. In this solution, the shaft sleeve 26 is arranged in the central hole of the inner end plate 232. The shaft sleeve 26 connects the inner handle 22 and the outer positioning turntable 24 or ticking plate 25. By rotating the shaft sleeve 26 and the central hole of the inner end plate 232, the friction is reduced.

[0047] The further refined solution can also adopt one of the following two structures:

[0048] In the first solution, the end of the handle 22 or the outer end of the shaft sleeve 26 is circumferentially meshed and linked with the positioning turntable 24, and the positioning turntable 24 is sequentially circumferentially meshed and linked with multiple ticking plates 25 inside it. This solution can refer to the prior application case with the application number "2024109737661".

[0049] The second solution is as Figure 7 shown. The multiple ticking plates 25 are sequentially circumferentially meshed and linked. Multiple protrusions 252 axially protrude from the inner end of the outermost ticking plate 25. The ends of the protrusions 252 pass through the through holes 241 on the positioning turntable 24 and are inserted into the end of the handle 22 or the outer end of the shaft sleeve 26 to achieve circumferential linkage. The protrusions 252 drive the positioning turntable 24 for circumferential linkage. This solution can be understood as that the end of the handle 22 or the outer end of the shaft sleeve 26 is circumferentially linked with the outermost ticking plate 25, and the positioning turntable 24 is sleeved on the protrusions 252 and linked together.

[0050] In the above solutions, the meshing structure can adopt a tooth-groove structure that matches each other.

[0051] Preferably, a gear position mark is provided on the outer wall surface of the positioning turntable 24 and / or the outer wall surface of the ticking plate 25, and a gear position through hole 241 for the gear position mark to be exposed is constructed on the connecting bridge 233. The solution of setting the gear position mark on the positioning turntable 24 can refer to the prior application case with the application number "2024109737661". During the linked rotation of the positioning turntable 24 and the ticking plate 25, the gear position mark on the positioning turntable 24 or the ticking plate 25 can leak out from the gear position through hole 241 and be observed, so as to represent the current counterweight weight.

[0052] As Figure 4 and 6As shown, pressing components 27 are fixedly connected to both ends of the central shaft rod 21. The pressing components 27 on both sides axially press multiple ticking disks 25, positioning turntables 24, bushings 26, and handle 22, and are circumferentially linked with the central shaft rod 21. The pressing components 27 are located inside the outer end plates 231 of the two-sided counterweight frames 23. At least a part of the end of the central shaft rod 21 extends out of the pressing component 27 and is rotationally positioned at the center of the outer end plate 231. The pressing components 27 here can be nuts. After the pressing components 27 on both sides are connected to both ends of the central shaft rod 21, the ticking disks 25, positioning turntables 24, bushings 26, and handle 22 therebetween are pressed, so that they can be linked with the central shaft rod 21. The extending part of the end of the central shaft rod 21 is used for rotatably supporting on the outer end plate 231. Further, a groove 230 is provided at the center of the outer end face of the outer end plate 231. The end of the central shaft rod 21 is inserted into the groove 230 at the center of the outer end plate 231 and axially fixedly connected by a bolt 28. A cover 234 is detachably provided on the groove 230. In this solution, the end of the central shaft rod 21 is axially fixedly connected by the bolt 28, so that the central shaft rod 21 is axially tightened with the outer end plate 231. Then, the cover 234 is covered on the groove 230 to achieve the effects of covering and aesthetics.

[0053] As Figure 4 and 5 As shown in FIGS. 6 and 7, an elastic pin assembly 5 is further provided on the inner end plate 232, and a plurality of positioning holes 242 are further constructed along the circumference of the positioning turntable 24. When the positioning turntable 24 rotates, the steel balls on the elastic pin assembly 5 can be engaged with or disengaged from the positioning holes 242. The cooperation between the elastic pin assembly 5 and the plurality of positioning holes 242 can feedback the sound of the steel balls engaging with the positioning holes 242 to the user, so that the user can know that the adjustment is in place.

[0054] As Figure 4 and 5As shown in FIGS. 6 and 7, the locking assembly is fixed on the inner end plate 232. The positioning turntable 24 is provided with a plurality of locking holes 243 along its circumferential direction. The locking assembly is snapped into any of the locking holes 243 to lock the positioning turntable 24 relative to the inner end plate 232. A cover body is fixedly connected to the end surface of the inner end plate 232 facing the positioning turntable 24. The locking assembly includes a locking block 61, an unlocking block 62 and a locking spring (figure omitted) located in the cover body. The locking spring abuts against the locking block 61, and a locking shaft 611 extending out of the cover body is provided on the locking block 61. The unlocking block 62 is slidably arranged on the inner end plate 232 and is in wedge-shaped cooperation with the locking block 61. When the dumbbell main body 2 is placed on the base 1, the unlocking member 13 on the base 1 acts on the unlocking block 62 and drives the locking shaft 611 on the locking block 61 to retract by means of inclined surface pressing. In this solution, the locking assembly on the counterweight frame 23 can be used to lock or unlock the positioning turntable 24, so as to control the circumferential movement or locking of the positioning turntable 24 and its linked ticking plate 25. Moreover, the unlocking member 13 is arranged on the upper end surface of the base 1. In this way, only when the dumbbell main body 2 is placed on the base 1, the locking assembly is unlocked and the counterweight can be adjusted by rotation. When the dumbbell main body 2 is removed from the base 1, the positioning turntable 24 and its linked ticking plate 25 are locked. Specifically, only under the action of the locking spring, the locking shaft 611 on the locking block 61 extends out of the cover body to catch the positioning turntable 24. When an external force acts on the unlocking block 62, the unlocking block 62 slides and the inclined surface presses the locking block 61 to unlock.

[0055] As Figure 7 shown, anti-detachment teeth 244 are arranged at intervals along the circumferential direction on the edge of the positioning turntable 24, and a detachment opening 245 is formed between two adjacent anti-detachment teeth 244. An anti-detachment hook 12 is arranged on the base 1. When the ticking plate 25 is not fully engaged or released with the counterweight block 3, the anti-detachment hook 12 engages with the anti-detachment teeth 244. When the selection plate is fully engaged or released with the counterweight block 3, the anti-detachment hook 12 is disengaged from the anti-detachment teeth 244 and can be separated from the detachment opening 245. The innovation point of this solution is that an anti-detachment hook 12 is arranged on the base 1, and the anti-detachment hook 12 is matched with the edge structure of the positioning turntable 24, so as to ensure that the positioning turntable 24 and its linked ticking plate 25 are adjusted in place (including fully engaging or releasing the counterweight block 3), and the ticking plate 25 can be firmly connected to the counterweight block 3. If the adjustment is not in place, the dumbbell main body 2 cannot be detached from the base 1 by the engagement of the anti-detachment hook 12 and the anti-detachment teeth 244.

[0056] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0057] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Without departing from the principles and purposes of the present utility model, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A dumbbell that can be smoothly adjusted in weight, comprising a base (1), a dumbbell body (2) and multiple weight plates (3); on both sides of the upper end surface of the base (1), storage grooves (11) are constructed, and the multiple weight plates (3) are placed on the storage grooves (11) of the base (1); it is characterized in that: The dumbbell body (2) includes a central shaft rod (21), a handle (22) sleeved on the center of the central shaft rod (21), and a counterweight unit connected to the central shaft rod (21) at both ends of the handle (22); the counterweight unit includes a counterweight frame (23) fixed on the central shaft rod (21), a positioning turntable (24) and multiple ticking plates (25) arranged inside the counterweight frame (23); a locking component for locking or unlocking the positioning turntable (24) is constructed on the counterweight frame (23); a counterweight space for clamping the counterweight block (3) is formed between two adjacent ticking plates (25), and between the edge ticking plate (25) and the positioning turntable (24) or the counterweight frame (23); the inner end of the central shaft rod (21) passes through the counterweight frame (23) and its shaft end is rotationally positioned on the outer end of the counterweight frame (23), and the handle (22), the positioning turntable (24) and multiple ticking plates (25) are sleeved outside the central shaft rod (21) and are circumferentially linked with it; during the rotation of the ticking plate (25), the counterweight block (3) can be clamped or loosened, so that the counterweight block (3) is assembled in the counterweight space or disengaged from the counterweight space.

2. The dumbbell capable of smoothly adjusting weight according to claim 1, wherein: 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 rod (21) passes through the central hole of the inner end plate (232) and its shaft end is rotatably connected to the center of the outer end plate (231); the positioning turntable (24) and multiple ticking plates (25) are sleeved on the central shaft rod (21) between the inner end plate (232) and the outer end plate (231), and both ends of the handle (22) are circumferentially linked with the positioning turntable (24) and multiple ticking plates (25) in sequence.

3. The dumbbell capable of smoothly adjusting the weight according to claim 2, wherein: Both end parts of the handle (22) partially pass through the central holes of the inner end plates (232) on both sides and are circumferentially meshed and linked with the adjacent positioning turntable (24) or ticking plate (25); alternatively, a shaft sleeve (26) is sleeved on the central shaft rod (21) in the central hole of the inner end plate (232), the inner end of the shaft sleeve (26) is meshed and circumferentially linked with the end part of the handle (22), and the outer end of the shaft sleeve (26) is meshed and circumferentially linked with the adjacent positioning turntable (24) or ticking plate (25); the outer wall surface of the shaft sleeve (26) is in rolling fit with the inner wall surface of the central hole of the inner end plate (232).

4. The dumbbell capable of smoothly adjusting the weight according to claim 3, characterized in that: The end part of the handle (22) or the outer end of the shaft sleeve (26) is circumferentially meshed and linked with the positioning turntable (24), and the positioning turntable (24) is circumferentially meshed and linked with multiple ticking plates (25) inside it in sequence; alternatively, multiple ticking plates (25) are circumferentially meshed and linked in sequence, and multiple convex blocks (252) axially protrude from the inner end of the outermost ticking plate (25), and the end of the convex block (252) passes through the through hole (241) on the positioning turntable (24) and is inserted into the end part of the handle (22) or the outer end of the shaft sleeve (26) to achieve circumferential linkage; the convex block (252) drives the positioning turntable (24) to circumferentially move.

5. The dumbbell capable of smoothly adjusting the weight according to claim 2, wherein: Gear position markings are provided on the outer wall surface of the positioning turntable (24) and / or the outer wall surface of the ticking disc (25), and a gear position through-hole (241) for exposing the gear position markings is formed on the connecting bridge (233).

6. The dumbbell capable of smoothly adjusting the weight according to claim 2, wherein: Pressing components (27) are fixedly connected to both ends of the central shaft rod (21). The pressing components (27) on both sides axially press multiple ticking discs (25), positioning turntables (24), bushings (26) and handle grips (22) and are circumferentially linked with the central shaft rod (21); the pressing components (27) are located inside the outer end discs (231) of the counterweight frames (23) on both sides, and at least part of the end of the central shaft rod (21) extends out of the pressing components (27) and is rotationally positioned at the center of the outer end disc (231).

7. The dumbbell capable of smoothly adjusting weight according to claim 6, wherein: A groove (230) is provided at the center of the outer end face of the outer end disc (231). The end of the central shaft rod (21) is inserted into the groove (230) at the center of the outer end disc (231) and is axially fixed by a bolt (28); a cover (234) is detachably arranged on the groove (230).

8. The dumbbell capable of smoothly adjusting the weight according to claim 2, wherein: An elastic pin assembly (5) is further provided on the inner end disc (232), and a plurality of positioning holes (242) are formed along the circumference of the positioning turntable (24); when the positioning turntable (24) rotates, the steel balls on the elastic pin assembly (5) can be inserted into or withdrawn from the positioning holes (242).

9. The dumbbell capable of smoothly adjusting the weight according to claim 2, wherein: The locking assembly is fixed on the inner end disc (232). A plurality of locking holes (243) are formed along the circumference of the positioning turntable (24). The locking assembly is inserted into any of the locking holes (243) to lock the positioning turntable (24) relative to the inner end disc (232); a cover body is fixedly connected to the end face of the inner end disc (232) facing the positioning turntable (24). The locking assembly includes a locking block (61), an unlocking block (62) and a locking spring in the cover body; the locking spring abuts against the locking block (61), and a locking shaft (611) extending out of the cover body is arranged on the locking block (61); the unlocking block (62) is slidably arranged on the inner end disc (232) and is in wedge-shaped cooperation with the locking block (61); when the dumbbell body (2) is placed on the base (1), the unlocking component (13) on the base (1) acts on the unlocking block (62) and drives the locking shaft (611) on the locking block (61) to retract by means of inclined plane pressing.

10. The dumbbell capable of smoothly adjusting weight according to claim 1, wherein: An arc-shaped convex rib (251) is formed on at least one disc surface of the disc body of the ticking disc (25), and the arc-shaped convex rib (251) is not closed along the circumference of the disc body of the ticking disc (25); a positioning convex block (252)(31) protruding from the end face is arranged on one disc surface of the counterweight block (3); when the ticking disc (25) is selected so that the positioning convex block (252)(31) is received above the arc-shaped convex rib (251), the ticking disc (25) catches the counterweight block (3).

11. The dumbbell capable of smoothly adjusting the weight according to claim 1, wherein: Anti - detachment teeth (244) are circumferentially spaced along the edge of the positioning turntable (24), and a detachment opening (245) is formed between two adjacent anti - detachment teeth (244); an anti - detachment hook (12) is provided on the base (1). When the ticking disc (25) and the counterweight (3) are not fully engaged or released, the anti - detachment hook (12) engages with the anti - detachment teeth (244); when the selection disc and the counterweight (3) are fully engaged or released, the anti - detachment hook (12) disengages from the anti - detachment teeth (244) and can be separated from the detachment opening (245).

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