Weight-adjustable dumbbell

Abstract

The utility model discloses a weight-adjustable dumbbell. The weight-adjustable dumbbell comprises a handle, a plurality of dumbbell pieces and a pair of adjusting assemblies, two ends of the handle are respectively provided with a fixed disc; the fixed plates are sequentially arranged along the fixed plate and are movably connected with one another; a second sliding groove corresponding to the first sliding groove is formed in the fixed disc; a pair of first sliding grooves are formed in the dumbbell pieces and penetrate through the dumbbell pieces. The two ends of the pair of adjusting assemblies are connected with the fixing disc correspondingly and correspond to the pair of first sliding grooves correspondingly. The adjusting assembly comprises a hanging rod, a shell, a driving mechanism and a limiting assembly; a connecting hole is formed in the outer side of the shell; the hanging rod is movably arranged in the shell; the driving mechanism is movably connected with the shell through the connecting hole; the limiting assembly is fixedly connected with the shell and matched with the driving mechanism. The weight of the dumbbell can be quickly selected, and the structure is stable; a self-locking function is realized, so that chip falling can be prevented; and the requirement for production precision is low, manufacturing is easy, and the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of dumbbell technology, and in particular to a dumbbell with adjustable weight. Background Technology

[0002] Dumbbells are widely used as fitness equipment, satisfying the preferences of fitness enthusiasts. Due to the widespread use of adjustable dumbbells, users often need many dumbbell plates of different weights, and adjustable dumbbells allow users to frequently adjust different weights to meet their training requirements.

[0003] Patent document CN218187698U discloses a weight-adjustable dumbbell, comprising several dumbbell plates, a dumbbell rod assembly for hanging the dumbbell plates, and a base for storing the dumbbell plates. The dumbbell rod assembly includes a drive shaft, on which several cam structures are fixedly connected. Each cam structure includes a cam plate, and each cam plate includes a load-bearing layer for hanging the dumbbell plates. The outer layers on both sides of the load-bearing layer are respectively provided with anti-wear layers, and one side of the anti-wear layer has several protrusions on its outer surface. The anti-wear layers on both sides of the cam plate of the cam structure, and the protrusions on the outer surface of one side of the anti-wear layer, with a hardness lower than that of the dumbbell plates, effectively reduce wear on the dumbbell plates by the cam plates, extend the service life of the dumbbell plates, and improve the stability of the dumbbell plate connection. However, although the dumbbell in this patent is easy to adjust, the varying contours of the cam structures and the high precision requirements of the cams complicate the manufacturing process, significantly increasing production costs. Furthermore, the dumbbell in this patent lacks a self-locking function. Summary of the Invention

[0004] According to an embodiment of the present invention, a weight-adjustable dumbbell is provided, comprising:

[0005] The handle has a fixing plate at each end;

[0006] Several dumbbell plates are arranged sequentially along a fixed plate and are movably connected to each other;

[0007] The fixed plate is provided with a second slide groove corresponding to the first slide groove;

[0008] The dumbbell plate is provided with a pair of first grooves, and the first grooves pass through the dumbbell plate;

[0009] A pair of adjusting components, each end of which is connected to a fixed plate and corresponds to a pair of first sliding grooves;

[0010] The adjustment assembly includes a hook rod, a housing, a drive mechanism, and a limit assembly;

[0011] Connection holes are provided on the outside of the housing;

[0012] The mounting rod is movably mounted inside the housing and can slide within the housing;

[0013] The drive mechanism is located in the connection hole and is movably connected to the housing through the connection hole, which can drive the hanging rod into the corresponding first slide groove;

[0014] The limiting component is fixedly connected to the housing and cooperates with the drive mechanism to provide self-locking for the drive mechanism.

[0015] Furthermore, the drive mechanism includes: a rack, a gear, a pair of hooks, a rotating shaft, and a knob;

[0016] The rack is connected to the connecting rod;

[0017] The shaft is detachably connected to the housing;

[0018] The gear is mounted on the rotating shaft and meshes with the rack;

[0019] A pair of hooks are fixedly connected to the gears, and the gears and hooks move synchronously.

[0020] The knob is rotatably mounted on the shaft. The knob is equipped with a pair of driving components, which are connected to the hook. Rotating the knob can drive the hook to move through the driving components.

[0021] Furthermore, the limiting component includes: a limiting ring, which is fixedly connected to the housing, and a number of limiting protrusions are arranged sequentially along the circumferential direction on the inner ring of the limiting ring, the limiting protrusions being arc-shaped and gradually thickening;

[0022] The hook includes: a connecting part, an elastic part, and a hook-shaped part;

[0023] The connecting part is fixedly connected to the gear, and the connecting part, the elastic part, and the hook-shaped part are connected in sequence.

[0024] A snap-fit ​​part is provided on the outer side of the elastic part, which can cooperate with the limiting protrusion;

[0025] The hook-shaped part and the connecting part can be used with the driving component.

[0026] Furthermore, the elastic part is arc-shaped, and the opening between the elastic part and the hook-shaped part is V-shaped and gradually increases from the connection point.

[0027] Furthermore, the connecting rod is provided with a long groove, in which a rack and gear are installed, and a rotating shaft passes through the long groove.

[0028] Furthermore, the housing is provided with a weight marking, which is distributed along the circumference of the knob.

[0029] Furthermore, the top of the hanging rod is equipped with a weight mark, and the housing is equipped with a marking observation window, which corresponds to the weight mark.

[0030] Furthermore, the bottom of the housing is evenly provided with several positioning grooves, and the bottom of the hook rod is provided with an elastic plunger, which matches the positioning groove.

[0031] Furthermore, the upper ends of the dumbbell plates are provided with a first upper hanging protrusion and a first upper hanging groove on both sides respectively; the lower ends of the dumbbell plates are provided with a first lower hanging protrusion and a first lower hanging groove on both sides respectively; the first upper hanging protrusion and the first lower hanging protrusion are located on opposite sides of the dumbbell plates.

[0032] Furthermore, the upper end of the fixed plate near the dumbbell plate is provided with a second upper hanging groove coupled to the first upper hanging protrusion, and the lower end is provided with a second lower hanging protrusion coupled to the first lower hanging groove.

[0033] Furthermore, the upper end of the dumbbell plate is provided with a first positioning hole and a third upper hanging groove on both sides, and a first hanging member is detachably provided in the first positioning hole; the lower end of the dumbbell plate is provided with a second positioning hole and a second lower hanging groove on both sides, and a second hanging member is detachably provided in the second positioning hole; the first hanging member and the second hanging member are located on opposite sides of the dumbbell plate.

[0034] Furthermore, a third positioning hole is provided on the upper end of the fixed plate near the dumbbell plate, and a third hooking component coupled to the third upper hooking groove is detachably installed in the third positioning hole; a third lower hooking groove coupled to the second hooking component is provided at the lower end.

[0035] The weight-adjustable dumbbell according to the present invention allows for quick selection of dumbbell weight, has a stable structure, a self-locking function to prevent weight loss, and requires lower production precision and is simple to manufacture, thus greatly reducing production costs.

[0036] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0037] Figure 1 This is a perspective view schematic diagram according to an embodiment of the present utility model;

[0038] Figure 2 for Figure 1 Top view;

[0039] Figure 3 for Figure 2 Sectional view along axis AA;

[0040] Figure 4 for Figure 2 BB-direction sectional view;

[0041] Figure 5 for Figure 4 Enlarged view of point A;

[0042] Figure 6 for Figure 4 Enlarged view of point D;

[0043] Figure 7 This is a schematic diagram of the structure of one type of dumbbell plate according to an embodiment of the present utility model;

[0044] Figure 8 for Figure 7 Rear view;

[0045] Figure 9 This is a schematic diagram of the structure of a fixing disk according to one embodiment of the present utility model;

[0046] Figure 10 This is a schematic diagram of the structure of a second type of dumbbell plate according to an embodiment of the present utility model;

[0047] Figure 11 This is a schematic cross-sectional view of the second type of dumbbell plates assembled according to an embodiment of the present invention;

[0048] Figure 12 for Figure 11 Enlarged view of point B;

[0049] Figure 13 for Figure 11 Enlarged view of point C;

[0050] Figure 14 This is a first-view structural schematic diagram of the second type of fixed disk according to an embodiment of the present utility model;

[0051] Figure 15 This is a schematic diagram of the second fixed disk structure according to an embodiment of the present utility model from a second perspective.

[0052] Figure 16 This is a schematic diagram of the internal structure of the adjustment component according to an embodiment of the present utility model;

[0053] Figure 17 for Figure 14 The right view;

[0054] Figure 18 for Figure 17 Enlarged view of point E. Detailed Implementation

[0055] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0056] First, combine Figures 1-18 The present invention describes a weight-adjustable dumbbell according to an embodiment of the present invention, which is used in fitness training and has a wide range of applications.

[0057] like Figures 1-18 As shown, the weight-adjustable dumbbell of this utility model embodiment includes:

[0058] Handle 1, with a fixing plate 11 at each end of handle 1;

[0059] Several dumbbell plates 2 are arranged at both ends of the handle 1, and are sequentially arranged along the fixed plate 11 and movably connected to each other;

[0060] The dumbbell plate 2 is provided with a pair of first sliding grooves 21, which pass through the dumbbell plate 2; the dumbbell plate 2 is provided with a pair of first sliding grooves 21, so that the dumbbell plate 2 can be placed at both ends of the handle 1, and can also be upside down.

[0061] The fixed plate 11 is provided with a pair of second slide grooves 110 corresponding to a pair of first slide grooves 21, and the second slide grooves 110 penetrate the fixed plate 11;

[0062] A pair of adjusting components 3, with both ends of the pair of adjusting components 3 connected to the fixed plate 11 respectively, and corresponding to a pair of first sliding grooves 21 and a pair of second sliding grooves 110 respectively;

[0063] Adjustment component 3 includes a hook rod 31, a housing 32, a drive mechanism, and a limit mechanism;

[0064] A connection hole 320 is provided on the outer side of the housing 32;

[0065] The hanging rod 31 is movably disposed within the housing 32 and can slide within the housing 32. The housing 32 serves to support and protect the dumbbell plate 2.

[0066] The drive mechanism is located in the connection hole 320 and is movably connected to the housing 32 through the connection hole 320. It can drive the hanging rod 31 from the second slide groove 110 into the corresponding first slide groove 21. When the hanging rod 31 enters the first slide groove 21, lifting the handle 1 can lift the corresponding dumbbell plate 2.

[0067] The limiting component is fixedly connected to the housing 32 and cooperates with the drive mechanism for self-locking of the drive mechanism.

[0068] Furthermore, such as Figure 1 , 4 As shown in ~5, 16~18, in this embodiment, the drive mechanism includes: rack 33, gear 34, rotating shaft 35, knob 36 and a pair of hooks 30;

[0069] The rack 33 is connected to the connecting rod 31;

[0070] The rotating shaft 35 is detachably and fixedly connected to the housing 32;

[0071] Gear 34 is sleeved on shaft 35 and meshes with rack 33;

[0072] A pair of hooks 30 are fixedly connected to the gears 34 respectively, and the gears 34 and hooks 30 move synchronously.

[0073] The knob 36 is rotatably mounted on the rotating shaft 35. A pair of driving members 361 are provided on the knob 36. The driving members 361 are connected to the hook 30. Rotating the knob 36 can drive the hook 30 to move through the driving members 361. The hook 30 drives the gear 34 to move synchronously. The gear 34 drives the rack 33 and the hanging rod 31 to move in opposite directions, so that the hanging rod 31 enters the dumbbell plates 2 at both ends of the handle 1 respectively.

[0074] Furthermore, such as Figure 16 , 18 As shown, in this embodiment, the limiting component includes: a limiting ring 7, which is fixedly connected to the housing 32. The inner ring of the limiting ring 7 is provided with a plurality of limiting protrusions 71 in sequence along the circumferential direction. The limiting protrusions 71 are arc-shaped and gradually thicken.

[0075] The hook 30 includes: a connecting part 301, an elastic part 302, and a hook-shaped part 303;

[0076] The connecting part 301 is fixedly connected to the gear 34, and the connecting part 301, the elastic part 302 and the hook-shaped part 303 are connected in sequence.

[0077] A snap-fit ​​part 3021 is provided on the outer side of the elastic part 302, which can cooperate with the limiting protrusion 71.

[0078] Furthermore, such as Figure 18 As shown, in this embodiment, the elastic part 302 is arc-shaped, and the opening between the elastic part 302 and the hook-shaped part 303 is V-shaped and gradually increases from the connection point. The elastic part 302 is made of elastic material (which belongs to the prior art) and can undergo a certain degree of elastic deformation.

[0079] When the drive component 361 rotates clockwise with the knob 36, it contacts the connecting part 301, causing the connecting part 301 to rotate. After each unit angle of rotation, the locking part 3021 engages with the corresponding limiting protrusion 71, causing the knob 36 to stop rotating. This creates a self-locking mechanism between the locking part 3021 and the limiting protrusion 71, thus achieving a self-locking state for the gear 34 and rack 33, preventing the plates from falling off during exercise. When the drive component 361 rotates counterclockwise with the knob 36, it first moves away from the connecting part 301, then enters the opening between the elastic part 302 and the hook-shaped part 303, gradually contacting the hook-shaped part 303. It then drives the hook-shaped part 303 and the elastic part 302 towards the center of the rotation axis until the locking part 3021 disengages from the limiting protrusion 71. The hook 30 then rotates together with the drive component 361 and the knob 36.

[0080] Furthermore, such as Figures 4-5 As shown, in this embodiment, the hanging rod 31 is provided with a long groove 311, the rack 33 and the gear 34 are arranged in the long groove 311, and the rotating shaft 35 is perpendicular to and passes through the long groove 311. The long groove 311 plays a guiding and limiting role.

[0081] Furthermore, in this embodiment, the housing 32 is provided with a weight marking, which is distributed along the circumference of the knob 36. When the knob 36 is rotated to the corresponding weight marking, the handle 1 can be lifted to move the dumbbell plate 2 of the corresponding weight.

[0082] Furthermore, such as Figures 1-2 As shown in Figure 5, in this embodiment, the top of the hanging rod 31 is provided with a weight mark, and the housing 32 is provided with a mark observation window 321. The mark observation window 321 corresponds to the weight mark. As the hanging rod 321 slides in the housing 32, the corresponding weight mark will appear in the observation window 321, which is convenient for knowing the hanging weight.

[0083] Furthermore, such as Figures 5-6 As shown, in this embodiment, the bottom of the housing 32 is uniformly provided with a plurality of positioning grooves 322, and the bottom of the hook rod 31 is provided with an elastic plunger 312. The elastic plunger 312 matches the positioning groove 322. When the elastic plunger 312 enters the positioning groove 322, it will make a clicking sound to indicate that it is in place.

[0084] Furthermore, such as Figures 7-9 As shown, in this embodiment, the upper ends of the dumbbell plates 2 are respectively provided with a first upper hanging protrusion 22 and a first upper hanging groove 23 on both sides; the lower ends of the dumbbell plates 2 are respectively provided with a first lower hanging protrusion 24 and a first lower hanging groove 25 on both sides; the first upper hanging protrusion 22 and the first lower hanging protrusion 24 are located on opposite sides of the dumbbell plates 2. Thus, the first upper hanging groove 23 of the inner dumbbell plate 2 is coupled with the first upper hanging protrusion 22 of the adjacent outer dumbbell plate 2, and the first lower hanging protrusion 24 of the inner dumbbell plate 2 is coupled with the first lower hanging groove 25 of the connected outer dumbbell plate 2; when the inner dumbbell plate 2 is lifted, it will not drive the outer dumbbell plate 2, but when the outer dumbbell plate 2 is lifted, it will cooperate with the hanging rod 31 to drive the inner dumbbell plate 2.

[0085] Furthermore, such as Figure 9 As shown, in this embodiment, the upper end of the fixing plate 11 is provided with a second upper hanging groove 111 coupled to the first upper hanging protrusion 22 on the side close to the dumbbell plate 2, and the lower end is provided with a second lower hanging protrusion 112 coupled to the first lower hanging groove 25.

[0086] Furthermore, such as Figures 7-9As shown, in this embodiment, the first upper hook protrusion 22, the first lower hook protrusion 24, and the second lower hook protrusion 112 have the same structure; the first upper hook groove 23, the first lower hook groove 25, and the second upper hook groove 111 have the same structure.

[0087] Furthermore, such as Figures 10-13 As shown, in this embodiment, the upper ends of the dumbbell plate 2 are respectively provided with a first positioning hole 26 and a third upper hanging groove 27, and a first hanging member 4 is detachably provided in the first positioning hole 26; the lower ends of the dumbbell plate 2 are respectively provided with a second positioning hole 28 and a second lower hanging groove 29, and a second hanging member 5 is detachably provided in the second positioning hole 28; the first hanging member 4 and the second hanging member 5 are located on opposite sides of the dumbbell plate 2.

[0088] Furthermore, such as Figures 14-15 As shown, in this embodiment, a third positioning hole 113 is provided on the side of the upper end of the fixed plate 11 near the dumbbell plate 2, and a third hook 6 coupled to the third upper hook groove 27 is detachably provided in the third positioning hole 113; a third lower hook groove 114 coupled to the second hook 5 is provided at the lower end.

[0089] Furthermore, such as Figures 10-15 As shown, in this embodiment, the first hook member 4, the second hook member 5, and the third hook member 6 have the same structure; the third upper hook groove 27, the second lower hook groove 29, and the third lower hook groove 114 have the same structure.

[0090] Working principle: Rotate knob 36 as needed to extend the hook rod 31 by a certain length, so that when handle 1 is lifted, the dumbbell plate 2 within the extended length range of the hook rod 31 is lifted. Furthermore, the extended lengths of the two hook rods 31 can be the same or different. Hook 30 drives the gear 34 and locks it in place.

[0091] Above, refer to Figures 1-18 The present invention describes a weight-adjustable dumbbell according to an embodiment of the present invention, which allows for quick selection of dumbbell weight, has a stable structure, has a self-locking function to prevent weight loss, and has low production precision requirements and is simple to manufacture, thus greatly reducing production costs.

[0092] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0093] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A weight-adjustable dumbbell, characterized by, The utility model relates to a weight-adjustable dumbbell, comprising: a handle provided with a fixing disc at each end; a plurality of dumbbell pieces arranged in sequence along the fixing disc and movably connected to each other; a pair of first sliding grooves provided on the dumbbell piece and penetrating the dumbbell piece; a second sliding groove corresponding to the first sliding groove provided on the fixing disc; a pair of adjusting assemblies connected to the fixing disc at each end and corresponding to the pair of first sliding grooves respectively; the adjusting assembly comprising a hanging rod, a shell, a driving mechanism and a limiting assembly; a connecting hole provided on the outer side of the shell; the hanging rod movably arranged in the shell and slidable in the shell; the driving mechanism arranged in the connecting hole and movably connected to the shell through the connecting hole, capable of driving the hanging rod into the corresponding first sliding groove; the limiting assembly fixedly connected to the shell and matched with the driving mechanism, used for self-locking of the driving mechanism; the driving mechanism comprising a rack, a gear, a pair of hooks, a rotating shaft and a knob; the rack connected to the hanging rod; the rotating shaft detachably connected to the shell; the gear sleeved on the rotating shaft, and the gear engaged with the rack; the pair of hooks fixedly connected to the gear, the gear and the hooks moving synchronously; the knob rotatably sleeved on the rotating shaft, a pair of driving members provided on the knob, the driving members in engagement with the hooks, and the knob rotated to drive the hooks to move through the driving members.

2. The weight-adjustable dumbbell according to claim 1, wherein: the limiting assembly comprising a limiting ring fixedly connected to the shell, a plurality of limiting protrusions arranged in sequence along the inner circle of the limiting ring in the circumferential direction, the limiting protrusions being arc-shaped and gradually thickening; the hook comprising a connecting part, an elastic part and a hook-shaped part; the connecting part fixedly connected to the gear, the connecting part, the elastic part and the hook-shaped part connected in sequence; the elastic part provided with a clamping part on the outer side, the clamping part matched with the limiting protrusion.

3. The weight adjustable dumbbell of claim 2, wherein, the elastic part being arc-shaped, the opening between the elastic part and the hook-shaped part starting from the connection part being V-shaped and gradually increasing.

4. The weight adjustable dumbbell of claim 1, wherein, a long slot provided on the hanging rod, the rack and the gear arranged in the long slot, and the rotating shaft penetrating the long slot.

5. The weight adjustable dumbbell of claim 1, wherein, a plurality of positioning grooves uniformly arranged on the bottom of the shell, an elastic plunger arranged on the bottom of the hanging rod, and the elastic plunger matched with the positioning grooves.

6. The weight adjustable dumbbell of claim 1, wherein, a first upper hanging protrusion and a first upper hanging slot arranged on the two sides of the upper end of the dumbbell piece respectively, a first lower hanging protrusion and a first lower hanging slot arranged on the two sides of the lower end of the dumbbell piece respectively, and the first upper hanging protrusion and the first lower hanging protrusion arranged on different sides of the dumbbell piece.

7. The weight adjustable dumbbell of claim 6, wherein, a second upper hanging slot arranged on the side of the upper end of the fixing disc close to the dumbbell piece and coupled with the first upper hanging protrusion, and a second lower hanging protrusion arranged on the lower end of the fixing disc and coupled with the first lower hanging slot.

8. The weight adjustable dumbbell of claim 1, wherein, The upper end of the dumbbell piece is provided with a first positioning hole and a third upper hanging groove on both sides respectively, and a first hanging piece is detachably arranged in the first positioning hole; the lower end of the dumbbell piece is provided with a second positioning hole and a second lower hanging groove on both sides respectively, and a second hanging piece is detachably arranged in the second positioning hole; the first hanging piece and the second hanging piece are arranged on different sides of the dumbbell piece.

9. The weight adjustable dumbbell of claim 8, wherein, The upper end of the fixed disc is provided with a third positioning hole near one side of the dumbbell piece, and a third hanging piece coupled with the third upper hanging groove is detachably arranged in the third positioning hole; the lower end is provided with a third lower hanging groove coupled with the second hanging piece.

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