Combined switch structure of dumbbell

Abstract

The utility model belongs to the technical field of dumbbells, and particularly relates to a combined switch structure of a dumbbell, which comprises a grip and a plurality of balancing weights, connecting seats for mounting the balancing weights are arranged on two sides of the grip, first sliding grooves are arranged on the connecting seats, and guide protrusions are arranged in the middles of one sides of the balancing weights close to the connecting seats. The guide protrusion is slidably connected with the first sliding groove, an elastic piece and two locking pieces are movably arranged on the balancing weight, the two locking pieces are arranged in the circumferential direction of the balancing weight at intervals, first clamping grooves matched with the locking pieces are formed in the connecting base, and the elastic piece drives the two locking pieces to reset and to be matched with the first clamping grooves. The utility model aims to provide the combined switch structure of the dumbbell, which is high in safety and convenient for a user to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of dumbbells, in particular to a combined switch structure of a dumbbell. Background Art

[0002] Dumbbells are simple equipment used to enhance muscle strength training and are an auxiliary equipment for weightlifting and fitness exercises. In order to make dumbbells suitable for different users and their different exercise needs, the weights on most dumbbells can be adjusted.

[0003] In order to facilitate users to quickly adjust the weight of dumbbells, many dumbbells are provided with detachable counterweights, such as the weight-adjustable dumbbell disclosed in Chinese utility model patent CN 202221738201.8, which includes a grab bar and dumbbell plates. The dumbbell plates include a first end face and a second end face, the first end face is provided with an assembly groove, the second end face is provided with an assembly block, the assembly block is provided with a movable locking block, the assembly groove is provided with a locking hole, and the assembly block is also provided with a locking block for controlling the state of the locking block. An assembly block and an assembly groove are provided on the dumbbell plate, and the assembly block is embedded in the assembly groove so that different dumbbell plates can be locked, thereby increasing the weight of the dumbbell. An unlocking block is provided to disengage the two dumbbell plates again, thereby reducing the weight of the dumbbell. It is convenient and fast, saving time and effort.

[0004] However, although the dumbbell plates in the above structure can be quickly disassembled, they are easily detached when the locking block is accidentally touched, which reduces safety. Especially when the dumbbells are in use, accidental falling of the dumbbell plates can easily cause accidental injury to the user. Utility Model Content

[0005] In order to overcome the deficiencies and problems in the prior art, the utility model provides a combined switch structure for a dumbbell that is highly safe and convenient for users to use.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A combination switch structure of a dumbbell includes a handle and several counterweights, wherein connecting seats for installing the counterweights are provided on both sides of the handle, a first slide groove is provided on the connecting seat, a guide protrusion is provided in the middle of the counterweight close to the connecting seat, the guide protrusion is slidably connected to the first slide groove, and an elastic member and two groups of locking members are movably provided on the counterweight, the two groups of locking members are arranged at intervals along the circumference of the counterweight, and first card grooves adapted to the locking members are respectively provided on the connecting seat, the elastic member drives the two groups of locking members to reset and respectively cooperate with the first card grooves, thereby fixing the connecting seat and the counterweight relatively.

[0008] The utility model is further configured as follows: it includes at least four counterweights, the counterweights are divided into two groups and are respectively installed on two connecting seats, the counterweights are provided with a second slide groove and a second clamping groove, the second slide groove and the second clamping groove are respectively the same in structure as the first slide groove and the second clamping groove, the second slide groove and the guide protrusion are respectively provided at both ends of the counterweight, the guide protrusions on the two adjacent counterweights on the same connecting seat cooperate with the second slide groove, and the locking piece cooperates with the second clamping groove, so that the two adjacent counterweights are relatively fixed.

[0009] The utility model is further configured as follows: the counterweight blocks are detachably connected in sequence, and an end cover is provided on the counterweight block farthest from the connecting seat, the end cover is provided at one end of the counterweight block away from the connecting seat and the second slide groove on the counterweight block is hidden.

[0010] The utility model is further configured as follows: a hook groove is provided on the counterweight block, and a hook adapted to the hook groove is provided on the end cover, and the hook cooperates with the hook groove so that the end cover is fixed relatively to the counterweight block.

[0011] The utility model is further configured as follows: one end of the first slide groove extends to the side wall of the connecting seat and forms an opening, the cross-sectional size of the first slide groove decreases as the distance from the opening increases, and the side walls of the guide protrusion are respectively pressed against the side walls of the first slide groove to prevent the guide protrusion from shaking in the first slide groove.

[0012] The present invention is further configured as follows: the first slide groove is a dovetail groove, the side walls of the dovetail groove are pressed against the guide protrusion and prevent the guide protrusion from shaking in the first slide groove, or the first slide groove is a T-shaped groove, both sides of the T-shaped groove are provided with inclined pressing walls connecting the adjacent two side walls of the T-shaped groove, and both sides of the guide protrusion are provided with pressing surfaces adapted to the pressing walls, the pressing walls are pressed against the pressing surfaces and prevent the guide protrusion from shaking in the first slide groove.

[0013] The utility model is further configured as follows: a guide groove is provided in the guide protrusion, the end of the guide groove extends to the side wall of the guide protrusion, the locking piece includes a clamping portion adapted to the first clamping groove, and the clamping portion is slidably arranged in the guide groove; the elastic piece drives the locking piece to reset, so that the clamping portion passes through the end of the guide groove, thereby making the clamping portion cooperate with the first clamping groove.

[0014] The utility model is further configured as follows: the first card slot is arranged on the side wall of the first slide slot, and an inclined driving surface is provided at the end of the first slide slot, the clamping portion can abut against the driving surface and displace the locking member, so that the clamping portion can cooperate with the first card slot on the side wall of the first slide slot.

[0015] The utility model is further configured as follows: control openings are respectively provided on two opposite sides of the counterweight block, and two groups of locking members respectively pass through the control openings on both sides of the counterweight block.

[0016] The present invention is further configured such that: the two groups of locking members are arranged opposite to each other, and the elastic member is arranged between the two groups of locking members, and the elastic member respectively abuts against the two groups of locking members and drives the two groups of locking members to reset.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. In the present invention, since two sets of locking members are movably provided on the counterweight block, and the elastic member drives the two sets of locking members to reset and respectively cooperate with the first slots, one set of locking members being accidentally touched during use will not cause the counterweight block to be separated from the connecting seat, which is beneficial to improving the safety of the dumbbell and making it convenient for the user to use. Moreover, since the two sets of locking members are arranged at intervals along the circumference of the counterweight block, the two sets of locking members are not easily touched at the same time, which is beneficial to further improving the safety of the dumbbell. The user can simultaneously drive the locking members to disengage from the first slots with one hand or both hands, making it convenient for the user to disassemble or install the dumbbell.

[0019] 2. The provision of the second slide groove and the second clamping groove in the present invention facilitates the sequential connection and cooperation of the counterweight blocks, facilitates the installation of multiple sets of counterweight blocks on the connecting seat, and facilitates the user to adjust the overall mass of the dumbbell by increasing or decreasing the number of counterweight blocks, making it convenient for the user to use; the counterweight blocks connected in sequence are conducive to reducing the types of dumbbell parts, facilitating the reduction of the production cost of the dumbbells, and facilitating the production and processing of the dumbbells, and the provision of the end cover can prevent debris from entering the second slide groove on the counterweight block at the end of the dumbbell, which is conducive to keeping the dumbbell clean and hygienic, and improving the aesthetics of the dumbbell; the arrangement of the clamping hook and the hook groove is simple, facilitates the connection and cooperation of the end cover and the counterweight block, and facilitates the assembly and production of the dumbbells.

[0020] 3. In the present invention, since the cross-sectional size of the first slide groove decreases as the distance from the opening increases, it is conducive to the tight fit of the first slide groove and the guide protrusion, which is conducive to the stable installation of the connecting seat and the counterweight block, and avoids the connecting seat and the counterweight block from shaking during use. In addition, this structure is convenient for reducing the friction between the guide protrusion and the first slide groove during installation and disassembly, and facilitates the rapid disassembly or installation of the guide protrusion and the first slide groove; the first slide groove of the dovetail groove or T-slot structure facilitates the stable installation of the guide protrusion and the first slide groove, and avoids accidental separation of the guide protrusion and the first slide groove, and the side wall or the abutting wall of the dovetail groove is conducive to dispersing the unidirectional force of the first slide groove, and avoiding damage to the first slide groove.

[0021] 4. The setting of the guide groove in the utility model facilitates the stable sliding of the clamping part, avoiding the deflection and dislocation of the clamping part during use to affect the connection and cooperation between the locking piece and the first clamping groove, and the locking piece arranged on the side wall of the guide protrusion facilitates the reduction of the force arm of the locking piece during use, avoiding the locking piece from being damaged by excessive force; the first clamping groove arranged on the side wall of the first slide groove is convenient for production and processing, and the setting of the driving surface facilitates the automatic displacement of the locking piece, and facilitates the rapid connection and cooperation between the connecting seat and the counterweight block.

[0022] 5. The control ports arranged on the opposite sides of the counterweight block in the present invention are not easily accidentally triggered at the same time, which prevents the counterweight block from detaching from the connecting seat, thereby improving the safety of the dumbbells and making it easier for users to use them. In this structure, an elastic member is used to drive the two sets of locking members to reset, which has a simple structure and is convenient for the assembly and production of dumbbells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is a partial cross-sectional view of the utility model;

[0025] Figure 3 It is an explosion diagram of the utility model;

[0026] Figure 4 This is a partial structural diagram of the handle of the utility model;

[0027] Figure 5 It is a cross-sectional view of the counterweight block in the utility model;

[0028] Figure 6 This is one of the structural diagrams of the counterweight block in the utility model;

[0029] Figure 7 This is the second structural diagram of the counterweight block in the utility model;

[0030] Figure 8 This is an exploded schematic diagram of the counterweight block in the utility model;

[0031] Figure 9 It is a structural schematic diagram of the housing in the utility model;

[0032] Figure 10 It is a structural diagram of the installation cover in the utility model;

[0033] Figure 11 It is a structural diagram of the locking member in the utility model;

[0034] Figure 12 It is an exploded schematic diagram of the end cover of the utility model.

[0035] In the figure: 1-handle; 11-connecting seat; 12-weight; 13-first slide; 14-first slot;

[0036] 2-counterweight; 21-housing; 22-mounting cover; 23-guide protrusion; 24-second slide groove; 25-second slot; 26-hook groove; 27-connecting groove; 28-mounting cavity; 29-guide groove; 281-control port; 3-locking piece; 31-clamping part; 4-elastic piece; 5-end cover; 51-hook; 52-connecting protrusion; 53-stop block. DETAILED DESCRIPTION

[0037] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 12 As shown, a combination switch structure of a dumbbell includes a handle 1 and several counterweights 2. A connecting seat 11 for installing the counterweight 2 is provided on both sides of the handle 1. A first slide 13 is provided on the connecting seat 11. A guide protrusion 23 is provided in the middle of the counterweight 2 near the connecting seat 11. The guide protrusion 23 is slidably connected to the first slide 13. An elastic member 4 and two groups of locking members 3 are movably provided on the counterweight 2. The two groups of locking members 3 are arranged at intervals along the circumference of the counterweight 2. First card slots 14 adapted to the locking members 3 are respectively provided on the connecting seat 11. The elastic member 4 drives the two groups of locking members 3 to reset and respectively cooperate with the first card slots 14 , so that the connecting seat 11 and the counterweight 2 are relatively fixed. Since two groups of locking pieces 3 are movably provided on the counterweight 2, and the elastic piece 4 drives the two groups of locking pieces 3 to reset and respectively cooperate with the first slots 14, one group of locking pieces 3 is accidentally touched during use and will not cause the counterweight 2 to be separated from the connecting seat 11, which is beneficial to improving the safety of the dumbbell and making it convenient for the user to use. Moreover, since the two groups of locking pieces 3 are arranged at intervals along the circumference of the counterweight 2, the two groups of locking pieces 3 are not easily touched at the same time, which is beneficial to further improving the safety of the dumbbell. The user can simultaneously drive the locking pieces 3 to disengage from the first slots 14 with one hand or both hands, making it convenient for the user to disassemble or install the dumbbell.

[0039] The counterweight block 2 described in the present invention is provided with control openings 281 on the opposite sides, and the two sets of locking members 3 respectively pass through the control openings 281 on the two sides of the counterweight block 2. The control openings 281 provided on the opposite sides of the counterweight block 2 are not easily accidentally triggered at the same time, thereby preventing the counterweight block 2 from being separated from the connecting seat 11, which is beneficial to improving the safety of the dumbbell and making it convenient for users to use.

[0040] Preferably, the two groups of locking members 3 are arranged opposite to each other, and the elastic member 4 is arranged between the two groups of locking members 3. The elastic member 4 respectively abuts against the two groups of locking members 3 and drives the two groups of locking members 3 to reset. In this structure, the two groups of locking members 3 are driven to reset by one elastic member 4. The structure is simple, which is convenient for reducing production costs and facilitating the assembly and production of dumbbells.

[0041] The guide protrusion 23 described in the present invention is provided with a guide groove 29, and the end of the guide groove 29 extends to the side wall of the guide protrusion 23. The locking member 3 includes a clamping portion 31 adapted to the first clamping groove 14, and the clamping portion 31 is slidably arranged in the guide groove 29; the elastic member 4 drives the locking member 3 to reset, so that the clamping portion 31 passes through the end of the guide groove 29, so that the clamping portion 31 cooperates with the first clamping groove 14. The setting of the guide groove 29 facilitates the stable sliding of the clamping portion 31, and avoids the deflection and dislocation of the clamping portion 31 during use that affects the connection and cooperation between the locking member 3 and the first clamping groove 14, and the locking member 3 provided on the side wall of the guide protrusion 23 facilitates to reduce the force arm of the locking member 3 during use, and avoids the locking member 3 being damaged by excessive force.

[0042] Preferably, the first slot 14 is arranged on the side wall of the first slide groove 13, and an inclined driving surface is provided at the end of the first slide groove 13. The clamping portion 31 can abut against the driving surface and displace the locking member 3, so that the clamping portion 31 can cooperate with the first slot 14 on the side wall of the first slide groove 13. The first slot 14 arranged on the side wall of the first slide groove 13 is convenient for production and processing, and the setting of the driving surface facilitates the automatic displacement of the locking member 3 and the rapid connection and cooperation between the connecting seat 11 and the counterweight block 2. In this embodiment, the first slots 14 are respectively arranged on the two side walls of the first slide groove 13.

[0043] One end of the first slide groove 13 extends to the side wall of the connecting seat 11 and forms an opening. The cross-sectional size of the first slide groove 13 decreases as the distance from the opening increases. The side walls of the guide protrusion 23 are respectively pressed against the side walls of the first slide groove 13 to prevent the guide protrusion 23 from shaking in the first slide groove 13. This structure is conducive to making the first slide groove 13 and the guide protrusion 23 fit tightly, which is conducive to the stable installation of the connecting seat 11 and the counterweight block 2, and avoids shaking of the connecting seat 11 and the counterweight block 2 during use. In addition, this structure is convenient for reducing the friction between the guide protrusion 23 and the first slide groove 13 during installation and disassembly, and facilitates the quick disassembly or installation of the guide protrusion 23 and the first slide groove 13.

[0044] In the present invention, the first slide groove 13 is a dovetail groove, and the side walls of the dovetail groove press against the guide protrusion 23 to prevent the guide protrusion 23 from shaking in the first slide groove 13. Alternatively, the first slide groove 13 is a T-shaped groove, and both sides of the T-shaped groove are provided with inclined pressing walls connecting the adjacent two side walls of the T-shaped groove. The pressing walls make the T-shaped groove form a structure similar to a dovetail groove, and both sides of the guide protrusion 23 are provided with pressing surfaces adapted to the pressing walls, and the pressing walls press against the pressing surfaces to prevent the guide protrusion 23 from shaking in the first slide groove 13. The first slide groove 13 of the dovetail groove or T-shaped groove structure facilitates the stable installation of the guide protrusion 23 and the first slide groove 13, avoiding accidental separation of the guide protrusion 23 from the first slide groove 13, and the side walls or pressing walls of the dovetail groove are conducive to dispersing the unidirectional force of the first slide groove 13, avoiding damage to the first slide groove 13.

[0045] The dumbbell includes at least four counterweights 2, which are divided into two groups and are respectively installed on two connecting seats 11. The counterweights 2 are provided with a second chute 24 and a second card slot 25. The second chute 24 and the second card slot 25 are respectively identical in structure to the first chute 13 and the second card slot 25. The second chute 24 and the guide protrusion 23 are respectively provided at both ends of the counterweight 2. The guide protrusions 23 on the two adjacent counterweights 2 on the same connecting seat 11 cooperate with the second chute 24, and the locking member 3 cooperates with the second card slot 25, so that The two adjacent counterweights 2 are relatively fixed. The provision of the second slide 24 and the second card slot 25 facilitates the sequential connection and matching of the counterweights 2, and facilitates the installation of multiple sets of counterweights 2 on the connecting seat 11, and facilitates the user to adjust the overall mass of the dumbbell by increasing or decreasing the number of counterweights 2, making it convenient for the user to use. The provision of the second slide 24 and the second card slot 25 facilitates the sequential connection and matching of the counterweights 2, and facilitates the installation of multiple sets of counterweights 2 on the connecting seat 11, and facilitates the user to adjust the overall mass of the dumbbell by increasing or decreasing the number of counterweights 2, making it convenient for the user to use.

[0046] In this embodiment, the first sliding groove 13 and the second sliding groove 24 have the same structure, and the first clamping groove 14 and the second clamping groove 25 have the same structure.

[0047] The counterweight blocks 2 described in the present invention are detachably connected in sequence, and an end cover 5 is provided on the counterweight block 2 farthest from the connecting seat 11. The end cover 5 is provided at the end of the counterweight block 2 away from the connecting seat 11 and the second slide groove 24 on the counterweight block 2 is hidden. The counterweight blocks 2 connected in sequence are beneficial to reducing the types of dumbbell parts, facilitating the reduction of the production cost of the dumbbells, and facilitating the production and processing of the dumbbells. The provision of the end cover 5 can prevent debris from entering the second slide groove 24 on the counterweight block 2 at the end of the dumbbell, which is beneficial to keeping the dumbbell clean and hygienic, and improving the aesthetics of the dumbbells.

[0048] The counterweight block 2 is provided with a hook groove 26, and the end cover 5 is provided with a hook 51 adapted to the hook groove 26. The hook 51 cooperates with the hook groove 26 to fix the end cover 5 on the counterweight block 2 relatively fixedly. The result of the hook 51 and the hook groove 26 is simple, which facilitates the connection and cooperation between the end cover 5 and the counterweight block 2, and facilitates the assembly and production of the dumbbell. In this embodiment, the end cover 5 is provided with a connecting protrusion 52, and the counterweight block 2 is provided with a connecting groove 27 adapted to the connecting protrusion 52. The connecting protrusion 52 cooperates with the connecting groove 27 to limit the relative movement of the end cover 5 and the counterweight block 2, thereby avoiding damage to the hook 51 due to excessive force, and the end cover 5 is provided with a block 53 for blocking the end of the second slide groove 24.

[0049] In the present invention, a connecting groove 27 and a hooking groove 26 are also provided at the end of the connecting seat 11 , and the end cover 5 can be detachably connected to the connecting seat 11 . After the end cover 5 is connected to the connecting seat 11 , the stopper 53 can block the end of the first sliding groove 13 .

[0050] The counterweight 2 includes a detachably connected shell 21 and a mounting cover 22. A mounting cavity 28 is provided in the shell 21, and a counterweight 12 is provided in the mounting cavity 28. The manufacturer can install counterweights 12 of different masses in the mounting cavity 28 as needed, and preferably, counterweights 12 are also provided in the handle 1 and the connecting seat 11. The user can exercise using only the handle 1 and the connecting seat 11.

[0051] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined switch structure for a dumbbell, comprising a handle (1) and a plurality of counterweights (2), characterized in that: Both sides of the handle (1) are provided with a connecting seat (11) for installing the counterweight (2), a first sliding groove (13) is provided on the connecting seat (11), a guide protrusion (23) is provided in the middle of the counterweight (2) close to the connecting seat (11), the guide protrusion (23) is slidably connected to the first sliding groove (13), and an elastic member (4) and two groups of locking members (3) are movably provided on the counterweight (2), the two groups of locking members (3) are arranged at intervals along the circumference of the counterweight (2), and first card grooves (14) adapted to the locking members (3) are respectively provided on the connecting seat (11), the elastic member (4) drives the two groups of locking members (3) to reset and respectively cooperate with the first card grooves (14), so that the connecting seat (11) and the counterweight (2) are relatively fixed.

2. The combined switch structure of a dumbbell according to claim 1, characterized in that: The invention comprises at least four counterweight blocks (2), which are divided into two groups and respectively mounted on two connecting seats (11). The counterweight blocks (2) are provided with a second slide groove (24) and a second clamping groove (25). The second slide groove (24) and the second clamping groove (25) are respectively identical in structure to the first slide groove (13) and the second clamping groove (25). The second slide groove (24) and the guide protrusion (23) are respectively arranged at both ends of the counterweight block (2). The guide protrusions (23) on two adjacent counterweight blocks (2) on the same connecting seat (11) cooperate with the second slide groove (24), and the locking member (3) cooperates with the second clamping groove (25), so that the two adjacent counterweight blocks (2) are relatively fixed.

3. The combined switch structure of a dumbbell according to claim 2, characterized in that: The counterweight blocks (2) are detachably connected in sequence, and an end cover (5) is provided on the counterweight block (2) farthest from the connecting seat (11). The end cover (5) is provided at one end of the counterweight block (2) away from the connecting seat (11) and conceals the second slide groove (24) on the counterweight block (2).

4. The combined switch structure of a dumbbell according to claim 3, characterized in that: The counterweight (2) is provided with a hook groove (26), and the end cover (5) is provided with a hook (51) adapted to the hook groove (26). The hook (51) cooperates with the hook groove (26) so that the end cover (5) is fixed to the counterweight (2) in a relatively fixed manner.

5. The combined switch structure of a dumbbell according to claim 1, characterized in that: One end of the first chute (13) extends to the side wall of the connecting seat (11) and forms an opening. The cross-sectional size of the first chute (13) decreases as the distance from the opening increases. The side walls of the guide protrusion (23) respectively press against the side walls of the first chute (13) to prevent the guide protrusion (23) from shaking in the first chute (13).

6. The combined switch structure of a dumbbell according to claim 5, characterized in that: The first chute (13) is a dovetail groove, the side wall of the dovetail groove is pressed against the guide protrusion (23) and prevents the guide protrusion (23) from shaking in the first chute (13), or the first chute (13) is a T-shaped groove, both sides of the T-shaped groove are provided with inclined pressing walls connecting the adjacent side walls of the T-shaped groove, and both sides of the guide protrusion (23) are provided with pressing surfaces adapted to the pressing walls, the pressing walls are pressed against the pressing surfaces and prevent the guide protrusion (23) from shaking in the first chute (13).

7. The combined switch structure of a dumbbell according to claim 1, characterized in that: A guide groove (29) is provided in the guide protrusion (23), and an end of the guide groove (29) extends to a side wall of the guide protrusion (23); the locking member (3) includes a clamping portion (31) adapted to the first clamping groove (14), and the clamping portion (31) is slidably provided in the guide groove (29); The elastic member (4) drives the locking member (3) to reset, causing the clamping portion (31) to pass through the end of the guide groove (29), thereby enabling the clamping portion (31) to cooperate with the first clamping groove (14).

8. The combined switch structure of a dumbbell according to claim 7, characterized in that: The first clamping groove (14) is arranged on the side wall of the first slide groove (13), and an inclined driving surface is arranged at the end of the first slide groove (13). The clamping portion (31) can abut against the driving surface and displace the locking member (3), so that the clamping portion (31) can cooperate with the first clamping groove (14) on the side wall of the first slide groove (13).

9. The combined switch structure of a dumbbell according to claim 1, characterized in that: Control openings (281) are respectively provided on two opposite sides of the counterweight block (2), and two groups of locking members (3) respectively pass through the control openings (281) on both sides of the counterweight block (2).

10. The combined switch structure of a dumbbell according to claim 9, characterized in that: The two groups of locking members (3) are arranged opposite to each other, and the elastic member (4) is arranged between the two groups of locking members (3). The elastic member (4) respectively abuts against the two groups of locking members (3) and drives the two groups of locking members (3) to reset.

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