CN210583480U - Dumbbell set - Google Patents

Abstract

The utility model discloses a dumbbell group, which comprises a base, two groups of weight units accommodated in the base and a dumbbell, wherein each weight unit comprises a plurality of balancing weights, and each balancing weight is concavely provided with at least one embedding hole; the dumbbell comprises a grab handle and two counterweight adjusting modules which are respectively arranged at two ends of the grab handle, wherein each counterweight adjusting module is provided with a base and a plurality of clamping units which are respectively accommodated in the base and respectively correspond to the counterweight blocks, and each clamping unit is provided with a driving component arranged on the grab handle and at least one bolt connected with the driving component. The beneficial effects of the utility model reside in that: the user can drive the grab handle to rotate relative to the counterweight adjusting module, so that the bolt is driven by the driving component to protrude outwards out of the base, is embedded into the embedding hole and is combined with the counterweight block, and the effect of adjusting the counterweight is achieved.

Description

Dumbbell set

Technical Field

The utility model relates to a body-building apparatus, in particular to a dumbbell group with adjustable balance weight.

Background

The dumbbell is a sports equipment who tempers hand muscle, and the dumbbell only has single weight and can't change the counter weight usually, when the user need adjust different training intensity, just will prepare the dumbbell of a plurality of different weights simultaneously and use, not only spends money, also is difficult for accomodating.

Taiwan patent TW201725062 discloses a dumbbell set with adjustable weight, which mainly comprises a receptacle and a dumbbell. The dumbbell is provided with a grab handle and two counterweight units which are respectively arranged at two ends of the grab handle, and each counterweight unit is mainly provided with a plurality of hook plates which can rotate along with the grab handle and a plurality of counterweight blocks. Each hook disc is provided with a hook unit, and the hook unit is provided with at least one convex part and at least one gap positioned beside the convex part. Each weight block has a hook-joint convex part. The handle is rotated to adjust the relative positions of the at least one convex part and the at least one gap of the hook disc and the hooking convex part, so that the balancing weight can be selectively assembled on the handle or separated from the handle to be placed in the containing seat, and further the effect of the dumbbell weight can be adjusted.

Although the dumbbell set can adjust the balance weight of the dumbbell, each balance weight block is connected with the hook plate in an abutting mode through the hooking convex part, so that the weight of the balance weight block is intensively stressed on the hooking convex part, the hooking convex part is not connected to the body of the balance weight block in an integrally forming mode usually, if flaws exist on the manufacturing of the hooking convex part and the body of the balance weight block, the hooking convex part is easy to break and separate from the body of the balance weight block, and if the body of the balance weight block breaks during training and use, the balance weight block is directly broken downwards, which is quite dangerous.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a dumbbell set that overcomes at least one of the disadvantages of the prior art.

The purpose of the utility model is realized through the following technical scheme:

the utility model discloses dumbbell group contains base, two sets of weight units, and dumbbell, the base includes seat body, and defines two and controls the interval ground and concavely to be established in the holding area of seat body top surface, each holding area has a plurality of front and back interval arrangement's holding groove; the weight units can be separately accommodated in the accommodating areas, each weight unit comprises a plurality of balancing weights which can be separately accommodated in the accommodating grooves of the accommodating areas, and each balancing weight is concavely provided with at least one embedding hole; the dumbbell comprises a grab handle extending leftwards and rightwards, and two counterweight adjusting modules which are respectively arranged at two ends of the grab handle and respectively correspond to the weight units, wherein each counterweight adjusting module is provided with a base for defining a plurality of adjusting spaces arranged leftwards and rightwards at intervals, and a plurality of clamping units which are respectively accommodated in the adjusting spaces and respectively correspond to the counterweight blocks of the respective weight units, each clamping unit is provided with a driving component arranged on the grab handle, and bolts of which the number corresponds to that of the clamping holes and are connected with the driving component; the grab handle can be driven to rotate relative to the counterweight adjusting module, each embedded and clamped unit is driven to be switched between a combined state and a loosening state, and when the embedded and clamped unit is changed from the loosening state to the combined state, the plug pin is driven by the driving assembly to protrude outwards out of the base, is embedded into the embedded hole of the corresponding counterweight block and is combined with the counterweight block.

The dumbbell group of the utility model is characterized in that each driving component is provided with a driving block which can be rotationally driven and arranged on the grab handle, and a driven block which is vertically stacked with the driving block and can be driven to move vertically, the driving block is provided with a driving body part and at least one convex part which is convexly arranged on the outer periphery of the driving body part, the driven block is provided with a driven body part and a connecting part which protrudes outwards from the driven body part and is propped against the driving block, the driven body part is provided with guide surfaces which correspond to the bolts in quantity and extend obliquely up and down, the bolts abut against the guide surfaces, when the clamping unit changes from the loosening state to the combining state, the driving block rotates to push the connecting part by the convex part, so that the driven body part moves relative to the bolt, and the guide surface drives the bolt to transversely protrude out of the base.

The utility model discloses a dumbbell group, each the concave at least one constant head tank that is equipped with in outer peripheral edges of convex part, inlay the card unit and be in during the bonding state, connecting portion with the constant head tank corresponds about and inlays the card joint.

The utility model discloses a dumbbell group, each the drive block the convex part has a plurality of constant head tanks, the inlay card unit is in during the bonding state, each driven block connecting portion are one of them constant head tank that can liftoff inlay card location in respective drive block.

The utility model discloses a dumbbell group, each counterweight adjustment module the drive block is followed grab handle axial mutual projection, the convex part has partial overlap and partial non-overlap.

The utility model discloses a dumbbell group, each one of them at least one of counter weight adjustment module the drive block has a plurality of convex parts.

The utility model discloses a dumbbell group, each counter weight adjustment module still have install in on the base and cover the upper cover in adjustment space, and a plurality ofly set up respectively in inlay the card unit with first elastic component between the upper cover, each first elastic component is permanent relative the upper cover pushes up down separately inlay the card unit, and will it converts extremely to inlay the card unit the pine takes off the state.

The utility model discloses a dumbbell group, each the bolt has can stretch out the base is outer and be used for imbedding respective embedding portion that inlays the hole, and connects embedding portion leans on to correspond inlay card unit and external diameter and be greater than the head of embedding portion, each inlay card unit still have quantity and correspond bolt and cover are located embedding portion and elasticity top support in the head with second elastic component between the base, work as each inlay card unit follow the joint state conversion extremely during the pine takes off the state, the second elastic component for the horizontal top of base pushes up the head, and makes the bolt restore to the throne in the base.

The utility model discloses a dumbbell group, each counterweight adjustment module still have a plurality of interval arrangements set up in the limiting plate of base, adjacent two the limiting plate with the base defines an installation space jointly, and each installation space can supply to correspond the balancing weight holding.

The utility model discloses a dumbbell group, each the side of balancing weight is radial concave establishes the confession and corresponds the slot that the balancing weight adjustment module was planted, each balancing weight has and delimits the groove wall of slot, each groove wall is concave establishes two and inlays the hole, and each inlays the card unit and has two to be located respectively both sides can insert respectively around the driven piece and correspond the bolt in caulking hole, each driven piece have two and supply respectively the guide surface that the bolt leaned on to.

The beneficial effects of the utility model reside in that: the counterweight adjusting module is safely combined with the counterweight block through the embedding combination of the embedding hole on the counterweight block and the bolt of the embedding and clamping unit, thereby achieving the purpose of adjusting the counterweight of the dumbbell.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of an embodiment of the dumbbell assembly of the present invention;

FIG. 2 is an exploded perspective view of the embodiment illustrating the arrangement of a base, two weight units, and a dumbbell;

FIG. 3 is an exploded perspective view of the dumbbell of this embodiment;

FIG. 4 is a top view of the dumbbell of this embodiment without the weight cell;

fig. 5 is a sectional view taken along line a-a of fig. 4, illustrating a state in which an inserting unit located at the innermost side is in a released state;

fig. 6 is a sectional view taken along the line B-B in fig. 4, illustrating a state in which the click unit located in the middle is in the released state;

fig. 7 is a sectional view taken along the line C-C in fig. 4, illustrating a state in which the click unit located at the outermost side is located in the released state;

FIG. 8 is a schematic view illustrating a state in which three driving blocks of the chucking unit are overlapped in the axial projection of a grip;

FIG. 9 is a top view of the dumbbell of this embodiment in combination with the outermost two weight blocks in the weight cell;

fig. 10 is a sectional view taken along line D-D in fig. 9, illustrating a state in which the click unit located at the innermost side is in the released state;

fig. 11 is a sectional view taken along line E-E in fig. 9, illustrating a state in which the click unit located in the middle is in the released state;

fig. 12 is a sectional view taken along line F-F of fig. 9, illustrating a state in which the click unit located at the outermost side is located in an engaged state;

FIG. 13 is a top view of the dumbbell of this embodiment in combination with two of the weight blocks located in the middle of the weight cells;

fig. 14 is a sectional view taken along line G-G in fig. 13, illustrating a state in which the click unit located at the innermost side is in the released state;

fig. 15 is a sectional view taken along line H-H in fig. 13, illustrating a state in which the card insertion unit located in the middle is in the coupling state;

fig. 16 is a sectional view taken along line I-I in fig. 13, illustrating a state in which the click unit located at the outermost side is located in the released state;

FIG. 17 is a top view of the dumbbell of this embodiment in combination with the innermost two of the weights in the weight cells;

fig. 18 is a sectional view taken along line J-J of fig. 17, illustrating a state in which the card insertion unit located at the innermost side is in the coupling state;

fig. 19 is a sectional view taken along line K-K in fig. 17, illustrating a state in which the click unit located in the middle is in the released state;

fig. 20 is a sectional view taken along the line L-L in fig. 17, illustrating a state in which the click unit located at the outermost side is located in the released state;

FIG. 21 is a top view of the dumbbell of this embodiment in combination with the innermost two of the weights and the middle two of the weights in the weight unit;

fig. 22 is a sectional view taken along the line M-M in fig. 21, illustrating a state in which the card insertion unit located at the innermost side is in the coupling state;

fig. 23 is a sectional view taken along the line N-N in fig. 21, illustrating a state in which the card insertion unit located in the middle is in the coupling state;

fig. 24 is a sectional view taken along the line O-O in fig. 21, illustrating a state in which the click unit located at the outermost side is located in the released state;

FIG. 25 is a top view of the dumbbell of this embodiment in combination with all of the weight cells;

fig. 26 is a sectional view taken along the line P-P in fig. 25, illustrating a state in which the card insertion unit located at the innermost side is in the coupling state;

fig. 27 is a sectional view taken along the line Q-Q in fig. 25, illustrating a state in which the card insertion unit located in the middle is in the coupling state; and

fig. 28 is a sectional view taken along the line R-R in fig. 25, illustrating a state in which the card-inserting unit located at the outermost side is located at the coupling state.

Detailed Description

Referring to fig. 1, 2 and 3, an embodiment of the dumbbell set of the present invention includes a base 1, two weight units 2, and a dumbbell 3. A left-right direction X and a front-back direction Y perpendicular to the left-right direction X are defined.

The base 1 includes a base body 11 and two protrusions 13 protruding from the base body 11, and defines two accommodation areas 12 recessed on the top surface of the base body 11 at intervals along the left-right direction X and respectively located on opposite sides of the protrusions 13, each accommodation area 12 having three accommodation grooves 121 arranged at intervals along the left-right direction X.

The weight units 2 are detachably received in the receiving areas 12, each weight unit 2 includes three weight blocks 21 respectively received in the receiving grooves 121 of the receiving areas 12, and an upper side of each weight block 21 is concavely provided with a slot 20 having an upward opening and a U shape and having a slot wall 211 defining the slot 20. Each weight 21 further has two insertion holes 212 recessed in the two extending ends of the groove wall 211 at a distance from each other (see fig. 12). The weight member 21 of each weight unit 2 has different thickness and weight, the outermost weight member 21 is thinnest and lightest, and the innermost weight member 21 is thickest and heaviest.

The dumbbell 3 includes a handle 31 extending left and right, two weight adjusting modules 32 respectively installed at two ends of the handle 31, and two anti-rotation modules 33 respectively installed at the weight adjusting modules 32.

Each of the weight adjusting modules 32 has a base 321, four limiting plates 322 spaced apart from each other on the base 321, three engaging units 323, an upper cover 324, and three first elastic members 325. The two adjacent limiting plates 322 cooperate with the base 321 to define an installation space 302, so that the base 321 and the limiting plates 322 define three installation spaces 302 with left and right intervals, the base 321 can be inserted into the corresponding slot 20 of the weight member 21 of the weight unit 2, and the weight members 21 are respectively accommodated in the installation spaces 302. The base 321 defines three adjusting spaces 301 with openings facing upward and spaced left and right.

The inserting units 323 of each weight adjusting module 32 are respectively disposed in the adjusting space 301 and respectively correspond to the weight blocks 21 of the weight units 2. Each of the engaging units 323 has a driving member 400 mounted on the handle 31, two pins 500 connected to the front and rear opposite sides of the driving member 400, and two second elastic members 600 respectively sleeved on the pins 500. Each driving assembly 400 has a driving block sleeved on the handle 31 and capable of being driven by the handle 31 to rotate, and a driven block 42 capable of being moved up and down to be overlapped on the driving block. For convenience of explanation, the driving blocks are divided into a driving block 41' located at the innermost side near the center of the grip 31, a driving block 41 ″ located at the middle, and a driving block 41 ″ located at the outermost side.

Referring to fig. 4-7, the drive block shape of each counterweight adjustment module 32 is different. Wherein, the driving block 41' located at the innermost side near the center of the handle 31 has a driving body 411', and a protrusion 412' protruding from the outer periphery of the driving body 411' and having four positioning slots 413 recessed from the outer periphery of the protrusion 412' (see fig. 5); wherein, the driving block 41' located in the middle has a driving body 411' and two protrusions 412' protruding from the outer periphery of the driving body 411', the protrusions 412' are spaced 180 degrees apart along the outer periphery of the driving body 411', and the outer periphery of each protrusion 412' is recessed with two positioning slots 413 (see fig. 6), and the area around the handle 1 extending along the protrusion 412' of the driving block 41' at the innermost side is smaller than the area around the handle 1; the driving block 41'″ located at the outermost side has a driving body 411' ″ and four protrusions 412'″ protruding from the outer periphery of the driving body 411' ″, the protrusions 412'″ are equiangularly distributed along the outer periphery of the driving body 411' ″, two adjacent protrusions 412'″ are spaced apart by 90 degrees, and a positioning groove 413 (see fig. 7) is recessed in the outer periphery of each protrusion 412' ″, and each protrusion 412'″ is smaller than the area of the protrusions 412', 412 ″ extending around the grip handle 31.

Referring to fig. 8, the projections 412', 412' of the driving blocks 41', 41' of each weight adjusting module 32, which are spaced left and right, have partially overlapping and partially non-overlapping regions when projected onto each other along the axial direction of the handle 31.

Referring to fig. 4 to 7, each driven block 42 has a driven body 421 and a connecting portion 422 protruding downward from the driven body 421 and abutting against the corresponding driving block. Each of the driven body 421 has two guiding surfaces 423 located at the front and rear sides thereof respectively and extending from top to bottom in an outward-inclined arc, and the guiding surfaces 423 are respectively used for the plug 500 to abut against.

Referring to fig. 3, each pin 500 abuts against the respective guiding surface 423 and is located in the respective adjusting space 301, and has a head 52 abutting against the guiding surface 423 and having a curved end, and an insertion portion 51 extending outward from the head 52 in the front-back direction and inserted into the base 321, wherein an outer diameter of the head 52 is larger than an outer diameter of the insertion portion 51. Each second elastic element 600 is sleeved on the embedding portion 51 and elastically abuts against the space between the head 52 and the base 321.

The upper cover 324 is mounted on the base 321 and covers the adjustment space 301. The first elastic members 325 are respectively installed between the top sides of the driven blocks 42 and the upper cover 324, and each first elastic member 325 constantly pushes the corresponding driven block 42 downward relative to the upper cover 324.

Referring to fig. 7 and 12, the card-inserting unit 323 located at the outermost side is illustrated, the card-inserting unit 323 can be driven by the handle 31 to switch between a combined state and a released state, when the inserting unit 323 changes from the releasing state (fig. 7) to the coupling state (fig. 11), the driving block 41'″ is rotated to push the connection portion 422 upward by one of the protrusions 412' ″, and the connecting portion 422 is engaged with the positioning slot 413 of the protrusion 412' ″ to drive the driven body 421 to move upward relative to the base 321, and then moves upward relative to the pin 500 to push the guiding surface 423 upward against the head 52 of the pin 500, the pins 500 are driven to protrude from the base 321 back and forth, so that the embedding portions 51 are respectively embedded into the embedding holes 212 of the weight member 21, and the weight adjustment module 32 is combined with the weight member 21. At the same time, the corresponding first elastic element 325 is elastically compressed by the driven body 421 moving upward relatively, and further accumulates elastic restoring force, so as to press the connecting portion 422 to be clamped against the positioning groove, and prevent the connecting portion 422 from sliding off the protruding portions 412', 412 "', so that the card-inserting unit 323 can be maintained in the engaged state. The second elastic member 600 is pressed by the head 52 moving outward and also accumulates elastic restoring force.

To drive the inserting unit 323 to change from the engaging state to the disengaging state, the handle 31 is rotated to drive the driving block 41' ″ to rotate relative to the driven block 42, so that the protrusion 412' ″ is separated from the connecting portion 422, the connecting portion 422 is located between the two protrusions 412' ″, at this time, the driven block 42 loses the force pushed upward, the first elastic member 325 releases the accumulated elastic restoring force to push the driven block 42 downward relative to the pin 500, and the second elastic member 600 also releases the accumulated elastic restoring force to push the head portions 52, so that the pins 500 gradually retract into the base 321 along the guiding surfaces 423, and are separated from the inserting holes 212 of the weight 21, respectively, thereby separating the weight adjusting module 32 from the weight 21.

Since the relative positions of the driving blocks 41', 41 "' are fixed, when the driving blocks 41', 41"' are rotated by the handle 31, the specific areas of the driving blocks 41', 41 "' can be selectively turned upward, so that the protrusions 412', 412"' can be respectively acted on the connecting portion 422 in different overlapping states, and the engagement unit 323 can be respectively and independently switched between the engaged state and the disengaged state.

Referring to fig. 2 and 3, the rotation prevention modules 33 are mounted on the handle 31 and located on opposite sides of the weight adjustment module 32. The rotation prevention module 33 can prevent the handle 31 from rotating relative to the weight adjustment module 32 when the dumbbell 3 is not placed on the base 1, and can be driven by the protrusion 13 to rotate the handle 31 relative to the weight adjustment module 32 when the dumbbell 3 is placed on the base 1, thereby switching the state of the inserting unit 323. Since the rotation-preventing module 33 is not the focus of the present invention, it will not be described in detail.

Referring to fig. 1 and 2, in the embodiment, in use, the weight units 2 are respectively placed in the accommodating areas 12, and the base 321 of the dumbbell 3 is inserted downward onto the weight block 21 to form the state shown in fig. 1, at this time, the protrusions 13 of the base 1 respectively drive the rotation prevention modules 33, so that the user can drive the handle 31 to rotate relative to the weight adjustment module 32. Since the left and right sides of the dumbbell set are symmetrically disposed, only the mechanism on the right side of the dumbbell set will be described below for convenience of description.

Referring to fig. 4 to 7, when the user wants to use the lightest weight, that is, the dumbbell 3 is not combined with any weight block 21 at all, the user rotates the handle 31 to adjust the driving body 411', 411 "' so that the areas without the protrusions 412', 412"' face upward, so that all the card-inserting units 323 are in the releasing state, and when the user lifts the handle 31 upward, the weight block 21 is not combined with the weight adjusting module 32 and remains in the accommodating groove 121, respectively, so as to achieve the lightest weight of the dumbbell 3.

Referring to fig. 9 to 12, if a user wants to change the weight, for example, only the outermost weight 21 is combined to form a lighter weight, the dumbbell set needs to be returned to the state shown in fig. 1, and then the handle 31 is rotated to drive the specific areas of the driving blocks 41', 41 ", and 41' ″ to face upward, so that only the outermost wedging unit 323 is switched to the combined state, the other two wedging units 323 are maintained in the released state, and after the adjustment is completed, the user can take out the handle 31 to obtain the weight 21 with the required weight.

Referring to fig. 13-16, the handle 31 can also be rotated to adjust other specific areas of the driving blocks 41', 41' ″ to face upward, so that only the middle counterweight 21 is combined with the counterweight adjustment module 32, or, referring to fig. 17-20, only the innermost counterweight 21 is combined with the counterweight adjustment module 32, so as to achieve different counterweight effects when combined with different counterweights 21.

Referring to fig. 21 to 24, the handle 31 may also be rotated to simultaneously convert the middle inserting unit 323 and the innermost inserting unit 323 into the combined state, and convert the outermost inserting unit 323 into the loose state, so that the counterweight adjusting module 32 combines the two counterweight blocks 21, thereby achieving the effect of assembling the two counterweight blocks 21 to generate a heavier counterweight. Of course, the handle 31 may be rotated to simultaneously switch the card-inserting unit 323 located at the outermost side and the card-inserting unit 323 located at the middle side to the combination state, or to switch the card-inserting unit 323 located at the outermost side and the card-inserting unit 323 located at the innermost side to the combination state, so as to switch any two different counterweight blocks 21 to be combined with the counterweight adjusting module 32.

Referring to fig. 25 to 28, the handle 31 is rotated to adjust the driving blocks 41', 41' ″ so that the specific areas of the protruding portions 412', 412' ″ face upward, and the engaging units 323 are switched to the engaging state, so that the balance weight blocks 21 are fully engaged with the balance weight adjusting module 32, thereby achieving the effect of combining all the balance weight blocks 21 of the dumbbell 3 to generate the heaviest balance weight.

It should be noted that, in the embodiment, the left and right widths of the balancing weight 21 of each weight unit 2 are different, and have different weights, and the width of the accommodating groove 121 corresponding to the balancing weight 21 is also changed correspondingly, but the implementation is not limited thereto, and the balancing weight 21 and the accommodating groove 121 may be designed to have the same size, and the effect of adjusting the balancing weight is not affected. And the quantity of the balancing weight 21 of each weight unit 2 is not limited to three, also can be two or four, the quantity of the embedding card unit 323 corresponding to the collocation quantity and the convex part quantity of each driving block of the adjustment design and the structure of partial overlapping and non-overlapping can reach the effect of the adjustment counterweight of the utility model.

It should be noted that each counterweight block 21 has two said embedding holes 212, each card-inserting unit 323 has two pins 500 that can be inserted into the embedding holes 212 respectively, and in addition to more stable combination, the balance of the whole structure can be maintained, but the implementation is not limited thereto, in other variations of this embodiment, each counterweight block 21 may have only one embedding hole 212, and each card-inserting unit 323 has only one corresponding pin 500 inserted into the embedding hole 212, and one guiding surface 423, which can still achieve the effect of combining the counterweight adjustment module 32 with the counterweight block 21.

To sum up, the utility model discloses dumbbell group's efficiency lies in: through the structural design of the convex parts 412', 412' and 412 'of the driving blocks 41', 41 'and 41', the card embedding unit 323 can be driven to be fully or partially changed to the combination state and partially or fully changed to the loosening state, so that a user can conveniently select and take the combination of the balancing weights 21 with different weights to achieve the purpose of adjusting the balance weight of the dumbbell 3; each engagement unit 323 is engaged with the corresponding weight 21 by engaging the engagement hole 212 of the weight 21 with the plug 500 of the engagement unit 323, so as to replace the engagement method in which the existing weight is engaged with the dumbbell only by connecting an additional engaging protrusion, thereby avoiding the disengagement of the weight due to the breaking of the engaging protrusion; each balancing weight 21 is embedded and combined through the two pins 500, when one of the pins 500 is broken and damaged, the balancing weight 21 can not fall off immediately, and the maintenance only needs to replace the pin 500 without replacing the whole balancing weight 21, so that the balancing weight adjusting module 32 and the balancing weight 21 are combined together safely, and the maintenance cost can be reduced.

The above-mentioned detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and it is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.

Claims (10)

1. A dumbbell set comprises a base, two sets of weight units and dumbbells, wherein the base comprises a base body and defines two containing areas which are concavely arranged on the top surface of the base body at intervals from left to right, and each containing area is provided with a plurality of containing grooves which are arranged at intervals from left to right; the weight units can be separately accommodated in the accommodating areas, each weight unit comprises a plurality of balancing weights which can be separately accommodated in the accommodating grooves of the accommodating areas, the dumbbell comprises a handle extending forwards and backwards, and the dumbbell is characterized in that: each balancing weight is concavely provided with at least one embedding hole; the dumbbell also comprises two balance weight adjusting modules which are respectively arranged at two ends of the grab handle and respectively correspond to the weight units, each balance weight adjusting module is provided with a base which defines a plurality of adjusting spaces which are arranged at intervals left and right, and a plurality of inserting and clamping units which are respectively accommodated in the adjusting spaces and respectively correspond to the balance weights of the respective weight units, each inserting and clamping unit is provided with a driving component which is arranged on the grab handle, and bolts of which the number corresponds to that of the inserting holes and is connected with the driving component; the grab handle can be driven to rotate relative to the counterweight adjusting module, so that each clamping unit is driven to be switched between a combination state and a loosening state, and when the clamping unit is changed from the loosening state to the combination state, the bolt is driven by the driving assembly to protrude outwards out of the base and is embedded into the corresponding embedding hole of the counterweight block, so that the bolt is combined with the counterweight block.

2. The dumbbell group of claim 1, wherein: each driving assembly is provided with a driving block which can be rotatably installed on the grab handle and a driven block which is vertically stacked with the driving block and can be driven to move vertically, the driving block is provided with a driving body part and at least one convex part which is convexly arranged on the outer periphery of the driving body part, the driven block is provided with a driven body part and a connecting part which protrudes outwards from the driven body part and is propped against the driving block, the driven body part is provided with guide surfaces which correspond to the pins in number and extend obliquely vertically, the pins are propped against the guide surfaces, when the card embedding unit is changed from the loosening state to the combining state, the driving block rotates to push the connecting part by the convex part, so that the driven body part moves relative to the pins, and the pins are driven by the guide surfaces to protrude transversely from the base.

3. The dumbbell group of claim 2, wherein: the outer periphery of each convex part of the driving block is concavely provided with at least one positioning groove, and the connecting part is correspondingly embedded and jointed with the positioning grooves up and down when the embedding and clamping unit is in the combined state.

4. The dumbbell group of claim 3, wherein: the convex part of each driving block is provided with a plurality of positioning grooves, and when the embedding and clamping unit is in the combined state, the connecting part of each driven block is detachably embedded and clamped in one of the positioning grooves of the corresponding driving block.

5. The dumbbell group of claim 2, wherein: the driving blocks of each counterweight adjusting module are projected to each other along the axial direction of the grab handle, and the convex parts are partially overlapped and partially not overlapped.

6. The dumbbell group of claim 2, wherein: at least one of the driving blocks of each counterweight adjusting module has a plurality of protrusions.

7. The dumbbell group of claim 1, wherein: each counterweight adjusting module is also provided with an upper cover which is arranged on the base and covers the adjusting space, and a plurality of first elastic pieces which are respectively arranged between the card embedding units and the upper cover, wherein each first elastic piece constantly pushes the respective card embedding unit downwards relative to the upper cover so as to convert the card embedding units to the loosening state.

8. The dumbbell group of claim 1, wherein: each plug pin is provided with an embedding part which can protrude out of the base and is used for embedding into the respective embedding hole, and a head part which is connected with the embedding part and abuts against the corresponding embedding and clamping unit, the outer diameter of the head part is larger than that of the embedding part, each embedding and clamping unit is also provided with second elastic pieces, the number of the second elastic pieces corresponds to that of the plug pins, the second elastic pieces are sleeved on the embedding part and elastically abut against the head part and the base, and when each embedding and clamping unit is switched from the combination state to the loosening state, the second elastic pieces transversely push the head part relative to the base so as to enable the plug pin to be reset and retracted in the base.

9. The dumbbell group of claim 1, wherein: each counterweight adjusting module is also provided with a plurality of limiting plates which are arranged on the base at intervals, two adjacent limiting plates and the base define an installation space together, and each installation space can be used for accommodating the corresponding counterweight.

10. The dumbbell group of claim 2, wherein: the side edge of each balancing weight is radially and concavely provided with a slot for inserting the corresponding balancing weight adjusting module, each balancing weight is provided with a slot wall surface for defining the slot, each slot wall surface is concavely provided with two embedding holes, each embedding and clamping unit is provided with two bolts which are respectively positioned at the front side and the rear side of the driven block and can be respectively inserted into the corresponding embedding holes, and each driven block is provided with two guide surfaces for respectively leaning against by the bolts.

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