WO2023159816A1

WO2023159816A1 - Counterweight-adjustable dumbbell

Info

Publication number: WO2023159816A1
Application number: PCT/CN2022/099943
Authority: WO
Inventors: 童晓蓉
Original assignee: 童晓蓉
Priority date: 2022-02-27
Filing date: 2022-06-20
Publication date: 2023-08-31

Abstract

Disclosed in the present invention is a counterweight-adjustable dumbbell, which comprises a dumbbell rod, a handle, dials, dumbbell rack assemblies, a plurality of counterweight adjustment assemblies, and counterweight pieces. Each dumbbell rack assembly comprises inner and outer supporting racks, and a connecting rack fixedly connected to the inner and outer supporting racks. The inner supporting rack is in rotatable fit with the handle, and the outer supporting rack is in rotatable fit with the dumbbell rod. A locking mechanism for locking the inner supporting rack to rotate relative to the dial is arranged on the inner supporting rack. The plurality of counterweight adjustment assemblies are correspondingly connected onto the connecting racks. Each counterweight adjustment assembly comprises a counterweight adjustment shell, a cam rotatably arranged in the counterweight adjustment shell, and a counterweight connecting assembly. The cams are sleeved on the dumbbell rod and provided with protruding teeth arranged according to the counterweight. The counterweight connecting assemblies are in fit with the protruding teeth and are driven by the protruding teeth to be connected to the corresponding counterweight pieces. By using the structure, the dumbbell has the advantages that the operation is simple, multiple adjustment gears are provided, the counterweight is conveniently adjusted, the weight of the counterweight can be directly read and the like.

Description

Weight adjustable dumbbells

technical field

The invention relates to the technical field of sports and fitness equipment, in particular to a dumbbell with an adjustable counterweight that adjusts the weight of the dumbbell by rotating a handle.

Background technique

With the improvement of living standards, people pay more and more attention to bodybuilding and body shape, and dumbbells are popular with people as the most commonly used fitness equipment for bodybuilding and body shape training. Traditional dumbbells are formed in one piece, so the counterweight cannot be changed. In order to meet the training requirements of different stages, multiple dumbbells of different weights must be purchased, which has problems such as high purchase cost and unfavorable storage. Existing dumbbells include a dumbbell bar and a plurality of counterweight plates sleeved at both ends of the dumbbell bar. The counterweight plates need to be assembled to the main shaft one by one to adjust the weight of the counterweight. It is inconvenient to adjust the counterweight. The counterweight of the dumbbell needs to be calculated one by one. The counterweight weight of the counterweight plate cannot be obtained intuitively, and the user experience is poor.

In order to facilitate the adjustment of the dumbbell counterweight and obtain the weight of the counterweight directly, the Chinese patent authorization announcement number CN100337706C discloses an adjustable dumbbell device. The selector knob can combine the weight sheet of the required weight with the dumbbell, and the unnecessary weight sheet remains on the support base. If the user needs to adjust the weight of the dumbbell, put the dumbbell back into the support base and re- Turn the left and right selector knobs to combine the desired weight stack with the dumbbell. This structure also has the following problems in the use process: one is that the weight adjustment on the left and right sides of the dumbbell cannot be carried out synchronously, and it needs to be implemented step by step. First adjust the weight on one side, and then adjust the weight on the other side. Can be further improved. The second is that although there are scale indicators when adjusting the left and right weights of the dumbbell, due to inattention, there will still be low-level mistakes that the left and right weights are inconsistent. For this reason, many manufacturers and people of insight carry out development and research, but there is not yet relatively desirable product to come out so far.

Contents of the invention

In order to overcome the above-mentioned problems in the prior art, the purpose of the invention is to provide an adjustable weight dumbbell with simple operation, multiple adjustment gears, convenient weight adjustment and direct reading of weight.

The present invention creates a technical solution for solving the above-mentioned technical problems, which includes a dumbbell bar, a handle arranged on the dumbbell bar, dials affixed to both sides of the handle, rotating dumbbell rack components arranged on both sides of the dumbbell bar, a plurality of A counterweight adjustment assembly, a weight sheet matched with the counterweight adjustment assembly, the dumbbell rack assembly includes an inner support frame, an outer support frame and a connecting frame fixedly connecting the inner support frame and the outer support frame, and the inner support frame and the handle rotate Cooperate, the outer support frame and the dumbbell bar rotate and cooperate, and the inner support frame is provided with a locking mechanism that locks the inner support frame to rotate relative to the dial;

The plurality of counterweight adjustment assemblies are correspondingly connected to the connecting frame. The counterweight adjustment assembly includes a counterweight adjustment housing, a rotatable cam disposed in the counterweight adjustment housing, and a counterweight connection assembly. The cam is sleeved on the dumbbell Convex teeth arranged in sequence according to the counterweight are arranged on the rod, and the counterweight connecting component cooperates with the protruding teeth and is driven by the protruding teeth to connect to the corresponding counterweight plate.

In a further solution created by the present invention, the counterweight connection assembly includes a pusher that can slide longitudinally relative to the counterweight adjustment housing and cooperate with the protruding teeth, and a sliding member that can laterally slide relative to the counterweight adjustment housing and can be elastically reset, The sliding part is provided with a pin connected with the counterweight plate, and the cams on the multiple counterweight adjustment components are engaged with each other and then engaged with the handle. When the handle is turned to drive the cams on the multiple counterweight adjustment components to rotate, different cams will The protruding teeth on the top press the pusher, and the pusher pushes the slider, so that the pins on the slider are connected with different weight plates to adjust the counterweight.

In a further solution created by the present invention, the dial is provided with gear scales that are evenly distributed and used to indicate the weight, and the positions of the convex teeth set by the cams on the plurality of counterweight adjustment assemblies are consistent with the gear scales.

In a further solution created by the present invention, the counterweight adjustment housing includes a counterweight seat and a counterweight cover fixed on the counterweight seat. The counterweight seat and the counterweight cover are correspondingly provided with a rotating positioning sleeve, and the two sides of the cam Correspondingly, a sleeve is provided, and the sleeve is rotatably matched with the rotating positioning sleeve on the counterweight seat and the counterweight cover.

In a further solution created by the present invention, the connecting frame is provided with slide rails, and the counterweight base is provided with slide grooves, and the counterweight base is installed on the connecting frame through the slide grooves and slide rails, and the connecting frame is provided with a decorative build.

In a further solution created by the present invention, the pusher is provided with a guide groove, and a guide pin passing through the guide groove is provided between the weight seat and the weight cover.

In a further solution created by the present invention, the weight plate is provided with an open slot, the lower part of the open slot is provided with a concave insertion slot, the two sides of the concave insertion slot are provided with cover plates, and the lower part of the counterweight adjustment assembly is provided with an inner The socket part matched with the concave socket groove, the two sides of the cam are set on the semicircular groove of the corresponding cover plate, and the cover plate on one or both sides is provided with a connecting hole of the balance plate matched with the column pin .

In a further solution created by the present invention, the locking mechanism includes a spring and a locking block. The locking block is provided with a locking block guide groove, and the dial is provided with rotating locking rings evenly distributed on the circumference and corresponding to the gear scale. There is an assembly groove on the inner side of the inner support frame. The assembly groove is provided with a rotation guide groove for the rotating locking piece to pass through when the dial rotates. The spring and the locking block are installed on the assembly groove correspondingly, and the locking block is lifted up When the locking block is locked, the guide groove of the locking block coincides with the rotating guide groove, and the rotating locking piece can pass through smoothly. When the locking block is released, the locking block guiding groove and the rotating guiding groove are misaligned, and the locking block blocks the rotating locking piece to prevent the dial from rotating. .

In a further solution created by the present invention, the dial is provided with positioning recesses uniformly distributed on the circumference and corresponding to the gear scale, the inner support frame is provided with a fixed positioning bracket, and the positioning bracket is provided with positioning recesses Cooperating elastic locators.

In a further solution created by the present invention, the dumbbell also includes a dumbbell seat, the dumbbell seat is provided with a top block that cooperates with the locking block, and when the top block cooperates with the locking block, the locking mechanism releases the locking of the dial. Correspondingly, an inner support frame positioning groove for positioning and placing the inner support frame and a weight plate positioning groove for positioning and placing the weight plate are provided.

After adopting the above-mentioned structure, compared with the prior art, there are the following advantages and effects: First, when adjusting the counterweight, the dial and all the cams rotate with the handle and the dumbbell bar, and the protruding teeth on the cam drive the counterweight adjustment assembly and the corresponding The counterweight plate is connected so that the weight of the counterweight adjustment assembly connected to the counterweight plate is consistent with the gear scale on the dial, and the weight of the dumbbell can be directly read from the dial. The second is that the positions of the protruding teeth on different cams are arranged reasonably, so that the dumbbells can be combined to form more gears with different counterweight weights. The third is that when the counterweight is adjusted, the handle can be operated both forward and reverse to hang the counterweight plates of different weights. The counterweight adjustment is simple and convenient, and the controllability is good.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional structure created by the present invention.

Fig. 2 is a schematic diagram of the decomposition structure created by the present invention.

Fig. 3 is a schematic diagram of the matching structure created by the present invention.

Fig. 4 is a schematic diagram of an exploded structure of a dumbbell rack on one side of the present invention.

Fig. 5 is a schematic diagram of an exploded structure of the counterweight adjustment assembly of the present invention.

Fig. 6 is a schematic diagram of an exploded structure of another direction of the counterweight adjusting assembly of the present invention.

Fig. 7 is a schematic diagram of the exploded structure of the counterweight adjustment assembly and the counterweight plate of the present invention.

Fig. 8 is a schematic diagram of cooperation between the counterweight adjustment assembly and the counterweight plate of the present invention when they are separated.

Fig. 9 is a schematic view of the combination of the counterweight adjustment assembly and the counterweight plate of the present invention.

Fig. 10 is a schematic diagram of an exploded structure of the locking mechanism of the present invention.

Fig. 11 is a schematic diagram of an exploded structure of another direction of the locking mechanism of the present invention.

Fig. 12 is a schematic diagram of the distribution of convex teeth on the first cam of the present invention.

Fig. 13 is a schematic diagram of the distribution of convex teeth on the second cam of the present invention.

Fig. 14 is a schematic diagram of the distribution of convex teeth on the third cam of the present invention.

Fig. 15 is a schematic diagram of the distribution of convex teeth on the fourth cam of the present invention.

Among them, 1 dumbbell seat, 2 weight plates, 3 handles, 4 dumbbell rack components, 5 inner support frame, 6 dial, 7 outer support frame, 8 decorative end cap, 9 weight adjustment assembly, 10 weight plate connecting hole, 11 Top block, 12 Positioning slot of inner support frame, 13 Positioning slot of counterweight plate, 14 Locking mechanism, 15 Compression block, 16 Decorative upper cover, 17 Connecting frame, 18 Counterweight cover, 19 Counterweight seat, 20 Dumbbell bar , 21 cam, 22 pusher, 23 slider, 24 return spring, 25 locking block, 26 spring, 27 first cam, 28 second cam, 29 third cam, 30 fourth cam, 31 chute, 32 slide Rail, 33 rotating positioning sleeve, 34 key, 35 convex tooth, 36 sleeve, 37 socket, 38 pin, 39 guide pin, 40 pin hole, 41 open slot, 42 cover plate, 43 concave socket slot , 44 socket, 45 handle slot, 46 positioning bracket, 47 elastic positioning piece, 48 gland, 49 gland key, 50 assembly groove, 51 rotating guide groove, 52 top block guide groove, 53 locking block guide Groove, 54 rotating locking piece, 55 positioning recess, 56 gland socket, 60 counterweight connection assembly.

Detailed ways

As shown in Fig. 1 to Fig. 15, it is a specific implementation of the present invention to create a dumbbell with adjustable counterweight, which includes a dumbbell bar 20, a handle 3 arranged on the dumbbell bar 20, and dials affixed to both sides of the handle 3 6. Rotate the dumbbell rack assembly 4 arranged on both sides of the dumbbell bar, a plurality of counterweight adjustment assemblies 9, the counterweight plate 2 matched with the counterweight adjustment assembly 9, and the handle 3 is socketed on the dumbbell bar 20 and fixed by a latch. The dumbbell rack assembly 4 includes an inner support frame 5, an outer support frame 7 and a connecting frame 17 affixed to the inner support frame 5 and the outer support frame 7, the inner support frame 5 is rotatably matched with the handle 3, and the outer support frame 7 is connected to the dumbbell The bar 20 is rotated and matched, and the end face of the dumbbell bar 20 is fixed with a compression stop 15 that compresses the outer support frame 7 and can rotate relative to the outer support frame 7. The outer support frame 7 is fixed with a decorative end cover 8 for covering the central hole. The inner support frame 5 is provided with a locking mechanism 14 that locks the rotation of the inner support frame 5 relative to the dial 6, which can ensure that the weight plate 2 is reliably connected with the weight adjustment assembly 9 during training. The end face of the handle 3 is fixed with a gland 48 for positioning the inner support frame 5. The handle 3 is provided with a handle slot 45, and the gland 48 is provided with a gland plug key 49 that cooperates with the handle slot 45 to facilitate assembly and positioning. The other side of 48 is provided with gland socket 56.

As shown in Fig. 4, Fig. 5 and Fig. 6, the plurality of counterweight adjustment assemblies 9 are correspondingly connected on the connecting frame 17, and the counterweight adjustment assembly 9 includes a counterweight adjustment housing, is arranged in the counterweight adjustment housing and can The rotating cam 21 and the counterweight connection assembly 60, the cam 21 is sleeved on the dumbbell bar 20 and is provided with convex teeth 35 arranged in sequence according to the counterweights, the counterweight connection assembly 60 cooperates with the convex teeth 35 and is driven by the convex teeth 35 to connect the phases Corresponding weight stack 2.

As shown in Fig. 5, Fig. 6, Fig. 8 and Fig. 9, the counterweight connection assembly 60 includes a pusher 22 that can slide longitudinally relative to the counterweight adjustment housing and cooperates with the protruding teeth 35, and a relative counterweight adjustment housing. The slider 23 slides horizontally and is elastically reset by the return spring 24. The pusher 22 is slidingly matched with the slider 23. The slider 23 is provided with a column pin 38 connected with the weight plate 2, and the cam 21 is correspondingly provided with mutual plugging. Insert key 34 and insert interface 37, the cams 21 on multiple counterweight adjustment assemblies 9 engage with each other through insert key 34 and insert interface 37, and the inner cam 21 connects with the gland fixed on the handle 3 through insert key 34 48 gland plug-in interface clamping; when the handle 3 is turned to adjust the counterweight, the handle 3 drives the cams 21 on a plurality of counterweight adjustment assemblies 9 to rotate, and the protruding teeth 35 on different cams 21 press the pusher 22, and the pusher 22 Push the slider 23 and move the pin 38 on the slider 23 laterally, and the pin 38 protrudes from the pin hole 40 on the counterweight adjustment housing and inserts into the corresponding weight plate connection hole of the weight plate 2 10, so as to realize the adjustment of counterweight.

Fig. 1, Fig. 2, as shown in Fig. 12 to Fig. 15, the gear scales that are evenly distributed and used to indicate the weight are arranged on the dial 6, and the convex teeth provided by the cams 21 on the plurality of counterweight adjustment assemblies 9 The 35 position is consistent with the gear scale.

As shown in Figures 5 and 6, the counterweight adjustment housing includes a counterweight base 19 and a counterweight cover 18 fixed on the counterweight base 19, and the counterweight base 19 and the counterweight cover 18 are correspondingly provided with rotation positioning Sleeve 33, the both sides of cam 21 are provided with sleeve sleeve 36 correspondingly, sleeve sleeve 36 and the rotation positioning sleeve 33 on the counterweight seat 19 and counterweight cover 18 rotate and cooperate. The pushing member 22 is provided with a guide groove, and a guide pin 39 passing through the guide groove is provided between the counterweight base 19 and the counterweight cover 18 .

As shown in Fig. 4, described connecting frame 17 is provided with slide rail 32, and counterweight seat 19 is provided with slide groove 31, and counterweight seat 19 cooperates with slide rail 32 to be installed on connecting frame 17 through chute 31, connects The frame 17 is provided with a decorative upper cover 16 .

As shown in Figure 7, the weight plate 2 is provided with an open slot 41, the bottom of the open slot 41 is provided with a concave insertion slot 43, and the two sides of the concave insertion slot 43 are provided with cover plates 42, and the counterweight adjustment The lower part of the assembly 9 is provided with the socket part 44 matched with the concave socket groove 43, and the two sides of the cam 21 are arranged on the semicircular groove corresponding to the cover plate 42, and the cover plate 42 on one side or both sides is provided with The weight plate connection hole 10 matched with the column pin 38 can not only prevent the weight plate 2 from shaking when the insertion part 44 of the counterweight adjustment assembly 9 lower part is inserted into the concave insertion groove 43 of the weight plate 2, but also can The column pin 38 is reliably connected with the counterweight plate 2 to ensure safe use.

As shown in Figure 2, the dumbbell also includes a dumbbell base 1, the dumbbell base 1 is provided with a top block 11 that cooperates with the locking block 25, and when the top block 11 cooperates with the locking block 25, the locking mechanism 14 releases the dial 6 The dumbbell seat 1 is correspondingly provided with an inner support frame positioning groove 12 for positioning and placing the inner support frame 5 and a weight plate positioning groove 13 for positioning and placing the weight plate 2 .

As shown in Figures 10 and 11, the locking mechanism 14 includes a spring 26 and a locking block 25, the locking block 25 is provided with a locking block guide groove 53, and the dial 6 is provided with a circle evenly distributed and aligned with the gear position. Scale corresponds to the rotation locking piece 54, the inner side of the inner support frame 5 is provided with an assembly groove 50 and a top block slot 52 connected with the assembly groove 50, and the assembly groove 50 is provided with a dial 6 that can be rotated and locked when it rotates. The rotation guide groove 51 through which the piece 54 passes, the spring 26 and the locking block 25 are correspondingly installed on the assembly groove 50; when the dumbbell is put into the dumbbell stand 1, as shown in Figure 1 and Figure 3, the inner support frame 5 is correspondingly inserted into the inner support On the frame positioning groove 12, the counterweight plate 2 is correspondingly inserted into the counterweight plate positioning groove 13, and the top block 11 passes through the top block slot 52 to lift up the locking block 25, and the locking block guide groove 53 coincides with the rotation guide groove 51 Realize unlocking, at this moment, turn handle 3, and handle 3 drives the rotation lock piece 54 on the dial 6 to pass through smoothly; Reset under the action, the locking block guide groove 53 and the rotating guide groove 51 are misaligned, the locking block 25 blocks the rotating locking plate 54 to prevent the dial 6 from rotating, thereby realizing locking, and making the connection between the counterweight plate 2 and the counterweight adjustment assembly 9 reliable , to ensure safe use, as shown in Figure 10 and Figure 11.

As shown in Figures 10 and 11, in order to ensure a clear shifting feel when the counterweight is adjusted, the dial 6 is provided with positioning recesses 55 that are evenly distributed around the circumference and correspond to the gear scale, and the inner support frame 5 A positioning bracket 46 is fixed on the top, and an elastic positioning member 47 cooperating with the positioning recess 55 is provided on the positioning bracket 46 .

The working principle is further described below in conjunction with this embodiment. In this embodiment, four counterweight plates 2 are provided, and four sets of counterweight adjustment assemblies 9 corresponding to the counterweight plates 2 are installed on the connecting frame 17, from outside to inside The first cam 27, the second cam 28, the third cam 29 and the fourth cam 30 are correspondingly installed on the four groups of counterweight adjustment assemblies 9, and the dial 6 is provided with twelve gears in total, and 30 degrees is a gear. The protruding teeth 35 on the first cam 27 , the second cam 28 , the third cam 29 and the fourth cam 3 are distributed as shown in FIGS. 12 to 15 .

When adjusting the counterweight, first put the dumbbell into the dumbbell seat 1, as shown in Figure 1, the locking block guide groove 53 coincides with the rotating guide groove 51 to realize unlocking, at this time, the handle 3 can drive the rotating locking piece on the dial 6 54 smoothly through the locking block guide groove 53 and the rotation guide groove 51. Then turn the handle 3, the handle 3 can be rotated forward or reversely, and the handle 3 drives the dial 6, the dumbbell bar 20 and the first cam 27, the second cam 28, the third cam 29 and the fourth cam 3 to rotate correspondingly The gear scale, the convex teeth 35 on the first cam 27, the second cam 28, the third cam 29 and the fourth cam 3 press the pusher 22, and the pusher 22 pushes the slider 23 and makes the slider 23 The column pin 38 moves laterally and is inserted into the corresponding weight plate connection hole 10 of the weight plate 2 to realize the balance weight adjustment.

When lifting the dumbbell, the top block 11 is separated from the locking block 25, and the locking block 25 resets under the elastic force of the spring 26, the locking block guide groove 53 and the rotation guide groove 51 are dislocated, and the locking block 25 blocks the rotation locking piece 54 Prevent the rotation of the dial 6, so as to achieve locking, so that the weight plate 2 is reliably connected with the weight adjustment assembly 9 during the training process, ensuring safe use, and the weight plate 2 that is not selected to hang remains on the corresponding weight of the dumbbell seat 1 On the sheet positioning groove 13.

During the first gear, all four cams do not have protruding teeth 35 to be neutral, and the dumbbell rack does not hang the weight plate 2, and now the dumbbell has the lightest weight and only has the weight of the dumbbell rack.

During the second gear, the first cam 27 is provided with a protruding tooth 35, and the other three cams do not have a protruding tooth 35, and the dumbbell rack is correspondingly articulated with the counterweight plate 2 corresponding to the first cam 27.

During the third gear, the second cam 28 is provided with a protruding tooth 35, and the other three cams do not have a protruding tooth 35, and the weight plate 2 corresponding to the second cam 28 is articulated on the dumbbell rack.

During the fourth gear, the third cam 29 is provided with a protruding tooth 35, and the other three cams do not have a protruding tooth 35, and the dumbbell rack is correspondingly articulated with the counterweight plate 2 corresponding to the third cam 29.

During the fifth gear, the first cam 27 and the second cam 28 are provided with convex teeth 35, and the other two cams do not have convex teeth 35, and the dumbbell rack is correspondingly articulated with the counterweight plates corresponding to the first cam 27 and the second cam 28 2.

During the sixth gear, the fourth cam 30 is provided with protruding teeth 35, and the other three cams do not have protruding teeth 35, and the corresponding counterweight plate 2 corresponding to the fourth cam 30 is articulated on the dumbbell rack.

During the seventh gear, the second cam 28 and the third cam 29 are provided with convex teeth 35, and the other two cams do not have convex teeth 35, and the dumbbell rack is correspondingly articulated with the counterweight plates corresponding to the second cam 28 and the third cam 29 2.

During the eighth gear, the third cam 29 and the fourth cam 30 are provided with convex teeth 35, and the other two cams do not have convex teeth 35, and the dumbbell rack is correspondingly articulated with the counterweights corresponding to the third cam 29 and the fourth cam 30 slice 2.

During nine gears, the first cam 27, the second cam 28 and the fourth cam 30 are provided with protruding teeth 35, the third cam 29 does not have protruding teeth 35, and the dumbbell rack is correspondingly articulated with the first cam 27, the second cam 28 and the first cam 27. The fourth cam 30 corresponds to the weight plate 2 .

During the tenth gear, the first cam 27, the third cam 29 and the fourth cam 30 are provided with convex teeth 35, the second cam 28 does not have the convex teeth 35, and the dumbbell rack is correspondingly articulated with the first cam 27, the third cam 29 and the first cam 27. The fourth cam 30 corresponds to the weight plate 2 .

During the eleventh gear, the second cam 28, the third cam 29 and the fourth cam 30 are provided with protruding teeth 35, the first cam 27 has no protruding teeth 35, and the dumbbell rack is correspondingly articulated with the second cam 28, the third cam 29 The counterweight plate 2 corresponding to the fourth cam 30 .

During twelve gears, the first cam 27, the second cam 28, the third cam 29 and the fourth cam 30 are all provided with protruding teeth 35, and the dumbbell rack is correspondingly articulated with the first cam 27, the second cam 28, the third The counterweight plate 2 corresponding to the cam 29 and the fourth cam 30 .

The above is only a specific embodiment of the invention, and does not impose any formal restrictions on the invention. On the basis of not departing from the technical solution of the invention, any simple modification, equivalent change or modification shall fall into the The scope of protection created by the present invention.

Claims

A dumbbell with adjustable counterweight, comprising a dumbbell bar (20), a handle (3) arranged on the dumbbell bar (20), dials (6) fixed on both sides of the handle (3), The dumbbell rack assembly (4) on both sides, a plurality of counterweight adjustment assemblies (9), and the counterweight plate (2) matched with the counterweight adjustment assembly (9), are characterized in that: the dumbbell rack assembly (4) Including the inner support frame (5), the outer support frame (7) and the connecting frame (17) fixedly connecting the inner support frame (5) and the outer support frame (7), the inner support frame (5) is rotatably matched with the handle (3) , the outer support frame (7) is rotationally matched with the dumbbell bar (20), and the inner support frame (5) is provided with a locking mechanism (14) for locking the inner support frame (5) to rotate relative to the dial (6);

The plurality of counterweight adjustment assemblies (9) are correspondingly connected to the connecting frame (17), and the counterweight adjustment assembly (9) includes a counterweight adjustment housing, a rotatable cam (21) arranged in the counterweight adjustment housing. ), the counterweight connection assembly (60), the cam (21) is sleeved on the dumbbell bar (20) and is provided with convex teeth (35) arranged according to the counterweight sequence, the counterweight connection assembly (60) and the convex teeth (35) Cooperate and drive to connect the corresponding counterweight plate (2) by the protruding teeth (35).
The dumbbell with adjustable counterweight according to claim 1, characterized in that: the counterweight connection assembly (60) includes a pusher (22) that can slide longitudinally relative to the counterweight adjustment housing and cooperates with the protruding teeth (35) ), a slider (23) that can slide laterally relative to the counterweight adjustment housing and can be elastically reset, the slider (23) is provided with a pin (38) connected to the counterweight plate (2), and multiple counterweight adjustments The cams (21) on the component (9) are clamped with each other and then clamped with the handle (3). When the handle (3) is turned to drive the cams (21) on the multiple counterweight adjustment components (9) to rotate, different cams ( The protruding teeth (35) on the 21) press the pusher (22), and the pusher (22) pushes the slider (23), so that the pins (38) on the slider (23) are aligned with different weight plates (2 ) connection to adjust the counterweight.
The adjustable weight dumbbell according to claim 1, characterized in that: the dial (6) is provided with gear scales that are evenly distributed and used to indicate the weight, and the multiple weight adjustment components (9) The position of the convex tooth (35) provided by the cam (21) is consistent with the gear scale.
The adjustable weight dumbbell according to claim 1, characterized in that: the weight adjustment housing comprises a weight seat (19) and a weight cover (18) fixed on the weight seat (19), The counterweight seat (19) and the counterweight cover (18) are correspondingly provided with a rotating positioning sleeve (33), and the both sides of the cam (21) are correspondingly provided with sleeves (36), and the sleeve sleeve (36) and the counterweight seat ( 19) and the rotation positioning sleeve (33) on the counterweight cover (18) is rotationally matched.
The adjustable weight dumbbell according to claim 4 is characterized in that: the connecting frame (17) is provided with a slide rail (32), and the counterweight seat (19) is provided with a chute (31). Heavy base (19) cooperates and is installed on the connecting frame (17) by chute (31) and slide rail (32), and connecting frame (17) is provided with decorative loam cake (16).
The dumbbell with adjustable counterweight according to claim 2, characterized in that: said pusher (22) is provided with a guide groove, and there is a passage between the counterweight seat (19) and the counterweight cover (18). Guide pin (39) for guide groove.
The adjustable weight dumbbell according to claim 2 is characterized in that: said weight plate (2) is provided with an open slot (41), and the lower part of the open slot (41) is provided with a concave insertion slot ( 43), the two sides of the concave insertion groove (43) are provided with cover plates (42), the lower part of the counterweight adjustment assembly (9) is provided with the insertion part (44) matched with the concave insertion groove (43), and the cam ( 21) The two sides are set on the semicircular grooves of the corresponding cover plates (42), and the cover plates (42) on one or both sides are provided with connecting holes for counterweight plates that match the pins (38) (10).
The adjustable weight dumbbell according to claim 1, characterized in that: the locking mechanism (14) includes a spring (26), a locking block (25), and a locking block (25) is provided on the locking block (25). The guide groove (53), the dial (6) is provided with the rotation locking piece (54) which is evenly distributed on the circumference and corresponds to the gear scale, and the inner side of the inner support frame (5) is provided with an assembly groove (50), and the assembly The groove (50) is provided with a rotating guide groove (51) that can pass through the rotating locking piece (54) when the dial (6) rotates, and the spring (26) and the locking block (25) are installed in the assembly groove (50) correspondingly. ), when the locking block (25) is lifted up, the locking block guide groove (53) coincides with the rotating guide groove (51), and the rotating locking piece (54) can pass through smoothly. When the locking block (25) is loosened Lock block guide groove (53) and rotation guide groove (51) dislocation, and lock block (25) blocks rotation lock plate (54) and stops dial (6) from rotating.
According to the adjustable weight dumbbell according to claim 7, it is characterized in that: said dial (6) is provided with positioning recesses (55) uniformly distributed on the circumference and corresponding to the gear scale, and the inner support frame (5 ) is provided with a fixed positioning bracket (46), and the positioning bracket (46) is provided with an elastic positioning piece (47) that cooperates with the positioning recess (55).
According to the adjustable weight dumbbell according to any one of claims 1 to 9, it is characterized in that: the dumbbell also includes a dumbbell seat (1), and the dumbbell seat (1) is provided with a locking block (25). Top block (11), when the top block (11) cooperates with the locking block (25), the locking mechanism (14) releases the locking of the dial (6), and the dumbbell seat (1) is correspondingly provided with an inner support frame for positioning and placing (5) the inner support frame positioning groove (12) and the weight plate positioning groove (13) for positioning and placing the weight plate (2).