Dumbbell device

Abstract

The invention provides a dumbbell device which comprises a dumbbell body, the dumbbell body comprises a dumbbell rod and a balance weight adjusting part, a balance weight adjusting structure of the balance weight adjusting part comprises a hanging structure and a sleeve which are correspondingly arranged, the sleeve is rotatably arranged on the periphery of the dumbbell rod in a sleeving mode, and an uneven driving face is arranged on the periphery of the sleeve; the mounting structure comprises a mounting part, a mounting rod and a first elastic part, the mounting rod is movably arranged on the mounting part, and the first elastic part applies elastic force moving towards the sleeve to the mounting rod; and the counterweight disc is used in cooperation with the counterweight adjusting structure, the counterweight disc is provided with a mounting hole, and when the sleeve rotates, the mounting rod can be inserted into or withdrawn from the mounting hole under the driving of the driving surface. According to the dumbbell device, the mounting structure of the balance weight disk is simple in structure and convenient to mount, meanwhile, the dumbbell rod does not need to be rotated in the balance weight adjustment process, the rotation resistance of the dumbbell device in the balance weight adjustment process is reduced, and the user experience of the dumbbell device is improved.

Description

Technical Field

[0001] The present invention generally relates to the technical field of fitness equipment, and particularly relates to a dumbbell device. Background Art

[0002] A dumbbell is a small fitness equipment, mostly used for users' muscle training. Chinese Patent (Patent Application No. 202410688986.X) discloses a dumbbell with quickly adjustable weight. It has steps on the weight plate, a cam on the rotating handle, a cam swing arm is connected to the cam in a matching manner, a rotating shaft is provided on the cover fixing frame and the cam swing arm is inserted through the rotating shaft. The cam swing arm swings outwards under the drive of the cam and enters the steps of the dumbbell plate. At this time, this weight plate is selected and can be lifted. In addition, a return spring is connected to the cam swing arm, and the other end of the return spring is fixed inside the cover fixing frame. The outward-swinging cam swing arm is reset under the action of the return spring. After resetting, the cam swing arm is located outside the steps of the dumbbell plate, and at this time this weight plate is not selected.

[0003] However, the structure used to realize the selection of weight plates in the above dumbbell has problems of complex structure and inconvenient installation. At the same time, when adjusting the counterweight, the entire rotating handle needs to be rotated, resulting in a large rotational resistance during counterweight adjustment and affecting the user experience. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a dumbbell device.

[0005] The present application provides a dumbbell device, including:

[0006] A dumbbell main body, which includes a dumbbell rod and a gripping part and two counterweight adjustment parts arranged on the dumbbell rod. The gripping part is located between the two counterweight adjustment parts and is rotatably sleeved around the outer circumference of the dumbbell rod along the axial direction of the dumbbell rod. The counterweight adjustment part includes a plurality of counterweight adjustment structures arranged along the axial direction of the dumbbell rod. The counterweight adjustment structure includes a mounting member, a sleeve, a hanging rod, and a first elastic member. The sleeve is movably sleeved on the dumbbell rod and is in anti-rotation cooperation with the gripping part. The outer circumference of the sleeve is provided with an uneven driving surface. The hanging rod is located on the outer peripheral side of the sleeve and is movably arranged on the mounting member along the direction of approaching or departing from the sleeve. The first elastic member is arranged between the mounting member and the hanging rod to apply an elastic force to the hanging rod to move it in the direction towards the sleeve;

[0007] A counterweight device, which includes a plurality of counterweight plates corresponding to and cooperating with the plurality of counterweight adjustment structures one by one. The counterweight plate is provided with a hanging hole. When the gripping part rotates, the hanging rod can be inserted into or withdrawn from the hanging hole under the drive of the driving surface.

[0008] Further, the driving surface has a plurality of convex portions arranged circumferentially along the sleeve, and the convex portions are used to drive the mounting rod to insert into the mounting hole. In the counterweight adjustment portion, some of the convex portions on any two or more driving surfaces are arranged opposite to each other in the axial direction of the dumbbell rod.

[0009] Further, the mounting rod and the first elastic member form a mounting assembly. The counterweight adjustment structure includes two mounting assemblies. The configured weight plate is provided with two mounting holes, and the two mounting holes are arranged in one-to-one correspondence with the mounting rods in the two mounting assemblies. The sleeve is provided with two driving surfaces. When the sleeve rotates, the two mounting rods are respectively driven by the two driving surfaces to insert into or withdraw from the corresponding mounting holes.

[0010] Further, the two mounting assemblies are arranged on both sides of the sleeve, and the two driving surfaces are centrosymmetrically arranged along the axis of the sleeve.

[0011] Further, the mounting rod is kept in contact with the driving surface under the drive of the first elastic member.

[0012] Further, in the counterweight adjustment portion, any two adjacent sleeves are rotationally locked with each other, and the sleeve close to the holding portion and the holding portion are rotationally locked with each other.

[0013] Further, at least some of the multiple counterweight plates have different weights.

[0014] Further, the counterweight plate is provided with a first accommodation groove for accommodating the mounting structure, and there is an included angle between the axial direction of the mounting hole and the opening direction of the first accommodation groove.

[0015] Further, the axial direction of the mounting hole is perpendicular to the opening direction of the first accommodation groove.

[0016] Further, the mounting hole is arranged on the groove side wall of the first accommodation groove.

[0017] In the dumbbell device provided by the present application, by providing a rotatable holding portion on the dumbbell rod, and providing a sleeve, a mounting rod and a first elastic member in the counterweight mounting structure, the sleeve is movably sleeved on the dumbbell rod and is rotationally locked with the holding portion, the mounting rod is located on the outer peripheral side of the sleeve and is movably arranged on the mounting member in a direction close to or away from the sleeve, the first elastic member is arranged between the mounting member and the mounting rod to apply an elastic force to the mounting rod to move in the direction towards the sleeve, and the mounting rod can be inserted into or withdrawn from the mounting hole under the drive of the driving surface when the holding portion rotates, so as to mount or unload the counterweight plate on the dumbbell main body. The above-mentioned counterweight adjustment structure is not only simple in structure and convenient to install, but also does not require rotating the dumbbell rod during counterweight adjustment, reducing the rotational resistance of the dumbbell device during counterweight adjustment and improving the user experience of the dumbbell device. Description of the Drawings

[0018] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0019] Figure 1 Schematic structural diagram of the dumbbell device provided by an embodiment of the present application;

[0020] Figure 2 Schematic diagram of the dumbbell device provided by an embodiment of the present application when the dumbbell main body is picked up;

[0021] Figure 3 Schematic structural diagram of the dumbbell main body provided by an embodiment of the present application;

[0022] Figure 4 For Figure 3 Schematic A-A half-sectional view of the structure shown;

[0023] Figure 5 For Figure 4 Enlarged view of part B in;

[0024] Figure 6 Schematic structural diagram of the dumbbell main body provided by an embodiment of the present application when the weight adjustment structure is not shown;

[0025] Figure 7 Schematic diagram of the cooperation between three sleeves in the weight adjustment part provided by an embodiment of the present application;

[0026] Figure 8 Exploded schematic diagram of the locking structure provided by an embodiment of the present application. Detailed implementation manners

[0027] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention and are not intended to limit the invention. Additionally, it should be noted that for the sake of description, only parts related to the invention are shown in the drawings.

[0028] Please refer to the attached Figure 1 , an embodiment of the present application provides a dumbbell device, including a dumbbell main body 100, a weight device, and a base 300. The dumbbell main body 100 and the weight device are both carried on the base 300, and the dumbbell main body 100 can selectively mount the weight device to achieve weight adjustment of the dumbbell.

[0029] Please refer to the attached Figure 1-3, the dumbbell body 100 includes a dumbbell rod 110, a gripping portion 120, and two weight adjustment portions 130. The two weight adjustment portions 130 are provided at both ends of the dumbbell rod 110. The gripping portion 120 is located between the two weight adjustment portions 130, and the gripping portion 120 is used for the user to grip to pick up and place the dumbbell body 100. The gripping portion 120 is rotatably sleeved on the outer periphery of the dumbbell rod 110 around the axial direction of the dumbbell rod 110. The weight adjustment portion 130 includes a plurality of weight adjustment structures 134 arranged along the axial direction of the dumbbell rod 110. The weight device includes a plurality of weight plates 200 that are respectively and correspondingly used in cooperation with the plurality of weight adjustment structures 134. The weight adjustment portion 130 selects to mount or dismount the corresponding weight plates 200 through the weight adjustment structures 134, wherein the weight plates 200 are provided with mounting holes 220. The weight adjustment structure 134 includes a mounting member, a sleeve 136, a mounting rod 137, and a first elastic member 138. The sleeve 136 is movably sleeved on the dumbbell rod 110. The sleeve 136 is in non-rotating fit with the gripping portion 120, and the sleeve 136 can rotate together with the gripping portion 120. The outer periphery of the sleeve 136 is provided with an uneven driving surface 1361. The driving surface 1361 has convex portions 1362 and concave portions 1363 arranged along the circumferential direction of the sleeve 136. The mounting rod 137 is located on the outer peripheral side of the sleeve 136. The mounting rod 137 is movably arranged on the mounting member along a direction close to or away from the sleeve 136. The first elastic member 138 is arranged between the mounting member and the mounting rod 137 to apply an elastic force to the mounting rod 137 to move it in the direction towards the sleeve 136.

[0030] When the gripping portion 120 rotates, the sleeve 136 also rotates in the same direction as the gripping portion 120, and the mounting rod 137 can be driven by the driving surface 1361 to insert into or withdraw from the mounting hole 220. Among them, when the mounting rod 137 is inserted into the mounting hole 220, the weight plate 200 is mounted on the dumbbell body 100, and when the mounting rod withdraws from the mounting hole 220, the weight plate 200 is dismounted from the dumbbell body 100. Specifically, during the rotation of the gripping portion 120, when the convex portion 1362 passes by the mounting rod 137, the convex portion 1362 can push the mounting rod 137 to move in the direction away from the sleeve 136 and insert into the mounting hole 220; when the concave portion 1363 passes by the mounting rod 137, the mounting rod 137 moves in the direction towards the sleeve 136 and withdraws from the mounting hole 220 under the drive of the first elastic member 138.

[0031] The above-mentioned weight adjustment structure 134 does not need to use a swing arm structure, which is not only simple in structure but also convenient to install. At the same time, when adjusting the weight, there is no need to rotate the dumbbell rod 110, which reduces the rotational resistance of the dumbbell device when adjusting the weight and improves the user experience of the dumbbell device. In addition, the mounting rod 137 mounts the weight plate 200 through its end, and it is not easy to bend and deform, which improves the reliability of the dumbbell device and extends the practicality of the dumbbell device.

[0032] The holding part 120 has a locked state and an unlocked state. In the locked state, the position between the holding part 120 and the dumbbell rod 110 is relatively fixed, and the holding part 120 cannot rotate relative to the dumbbell rod 110. At this time, the counterweight plates 200 mounted on the counterweight adjustment structure 134 cannot be unloaded, and the counterweight adjustment structure 134 cannot perform the operation of mounting the counterweight plates 200 either; in the unlocked state, the holding part 120 can rotate freely relative to the dumbbell rod 110. At this time, the operation of mounting or unloading the counterweight plates 200 can be performed by rotating the holding part 120. A locking structure is provided on the dumbbell main body 100, and an unlocking member is provided on the base 300. When the dumbbell main body 100 is placed on the base 300, the unlocking member unlocks the locking structure, so that the holding part 120 is in the unlocked state; when the dumbbell main body 100 is separated from the base 300, the unlocking member and the locking structure are separated, and the holding part 120 is in the locked state under the action of the locking structure.

[0033] The dumbbell device has multiple counterweight gears, and the counterweights corresponding to the multiple counterweight gears can be partially the same or all different. The holding part 120 has an initial set position and corresponds to one of the multiple counterweight gears at the initial set position (the corresponding counterweight gear is the initial counterweight gear), and the user can switch and adjust the counterweight gears by rotating the holding part 120 clockwise or counterclockwise.

[0034] Please refer to the appendix Figure 1-3 As shown, the counterweight device includes two counterweight groups. Each counterweight group includes multiple counterweight plates 200, and the multiple counterweight plates 200 are in one-to-one correspondence and used in cooperation with the multiple counterweight adjustment structures 134 in the counterweight adjustment part 130. The base 300 is provided with two spaced bell plate placement parts. The bell plate placement part includes multiple placement grooves 310. The two counterweight groups are respectively placed on the two bell plate placement parts, and the multiple counterweight plates 200 in the counterweight group are respectively mounted on the multiple placement grooves 310 in the bell plate placement part.

[0035] The weight adjustment part 130 includes a mounting bracket, and the mounting bracket includes an outer end cap 131 and an inner end cap 132 provided on the dumbbell rod 110 and a connecting block 133 connecting the outer end cap 131 and the inner end cap 132. The mounting member includes a mounting shell 135, the mounting shell 135 is fixedly connected to the connecting block 133, the mounting shell 135 is sleeved on the outer periphery of the sleeve 136, and the convex part on the driving surface 1361 is limited and installed in the mounting shell 135. The hanging rod 137 and the first elastic member 138 are both arranged in the mounting shell 135. The wall of the mounting shell 135 is provided with a through hole, the hanging rod 137 passes through the through hole, the hanging rod 137 is provided with a stepped surface, the first elastic member can be but not limited to a spring, and the spring is sleeved on the outer periphery of the hanging rod 137 and is located between the stepped surface and the wall of the shell. In order to strengthen the bearing stability of the mounting shell 135 on the hanging rod 137, a reinforcing block is provided on the wall of the mounting shell 135, and the hanging rod 137 passes through the reinforcing block and the through hole in sequence. The hanging rod 137 can be driven by the convex part 1362 to move out of the mounting shell 135 and insert into the hanging hole 220 on the weight plate 200 used in cooperation.

[0036] The weights of the multiple weight plates 200 in each weight group can be the same, partially the same, or all different.

[0037] Optionally, in each weight adjustment part 130, any two adjacent sleeves 136 are anti-rotationally fitted, and the sleeve 136 close to the holding part 120 and the holding part 120 are anti-rotationally fitted. In this way, the holding part 120 only needs to drive the closest sleeve 136 to rotate, and the purpose of multiple sleeves 136 rotating together with the holding part 120 can be achieved. The structure of the holding part 120 driving multiple sleeves 136 to rotate together is simplified, and the cost of the dumbbell device is reduced. Of course, in other embodiments, in each weight adjustment part 130, the multiple sleeves 136 can be an integral structure, or the multiple sleeves 136 and the holding part 120 are integrally connected.

[0038] Please refer to the appendix Figure 4 , in any two adjacent sleeves 136, one end of one sleeve 136 is provided with an anti-rotation groove 1365, and the end of the other sleeve 136 is provided with an anti-rotation protrusion 1364. The anti-rotation protrusion 1364 is inserted into the anti-rotation groove 1365, and the anti-rotation protrusion 1364 and the anti-rotation groove 1365 are interlocked in the circumferential direction to achieve the anti-rotation fit between the two sleeves 136. The shapes of the above anti-rotation groove 1365 and anti-rotation protrusion 1364 are adapted to each other, and the shape of the anti-rotation groove 1365 can be but not limited to a regular hexagon or other polygons. The above anti-rotation structures are also respectively provided between the holding part 120 and the adjacent sleeve 136 to achieve the anti-rotation fit between the two.

[0039] Referring to FIGS. 4 and 7, in some embodiments of the present application, the driving surface 1361 has a plurality of convex portions 1362 arranged circumferentially along the sleeve 136. In the weight adjustment portion 130, some of the convex portions 1362 on any two or more driving surfaces 1361 are arranged opposite to each other in the axial direction of the dumbbell rod 110. It should be understood that any two or more of the above driving surfaces 1361 belong to different weight adjustment structures 134, that is, the driving surfaces 1361 in any two or more weight adjustment structures 134. For a plurality of protrusions arranged opposite to each other in the axial direction of the dumbbell rod 110, when the holding portion 120 rotates, the plurality of protrusions will simultaneously drive the mounting rods 137 in a plurality of weight adjustment structures 134 to move, so that a plurality of weight adjustment structures 134 simultaneously mount the weight plates 200.

[0040] With the above arrangement, the dumbbell main body 100 can select to mount any combination of weight plates 200. And when at least some of the weights of the plurality of weight plates 200 in the weight set are different, it is possible to increase the number of weight levels of the dumbbell main body 100 without changing or reducing the number of weight plates 200 in the weight set, improving the practicability of the dumbbell device, and further enhancing the user experience of the dumbbell device.

[0041] Optionally, in the weight adjustment portion 130, each of the driving surfaces 1361 in a plurality of weight adjustment structures 134 has a concave portion 1363 arranged opposite to each other in the axial direction of the dumbbell rod 110. At this time, the weight level corresponding to the plurality of concave portions 1363 arranged opposite to each other in the axial direction of the dumbbell rod 110 is the weight level with the smallest weight, and the weight is the self-weight of the dumbbell main body 100.

[0042] Optionally, each of the driving surfaces 1361 in a plurality of weight adjustment structures 134 has a convex portion 1362 arranged opposite to each other in the axial direction of the dumbbell rod 110. At this time, the weight level corresponding to the plurality of convex portions 1362 arranged opposite to each other in the axial direction of the dumbbell rod 110 is the weight level with the largest weight, and at this time each weight adjustment structure 134 mounts a weight plate 200.

[0043] Optionally, the driving surface 1361 further has a plurality of concave portions 1363, and the plurality of concave portions 1363 and the plurality of convex portions 1362 are arranged circumferentially along the sleeve 136. Among the plurality of sleeves 136 in the weight adjustment portion 130, the arrangement orders of the plurality of convex and concave portions 1362 on at least some of the sleeves 136 are different.

[0044] In some embodiments of the present application, the mounting rod 137 and the first elastic member 138 form a mounting assembly. The weight adjustment structure 134 includes two mounting assemblies. The configured weight plate is provided with two mounting holes 220, and the two mounting holes 220 are arranged in one-to-one correspondence with the mounting rods 137 in the two mounting assemblies. The sleeve 136 is provided with two driving surfaces 1361, and the two driving surfaces 1361 are respectively in one-to-one cooperation with the two mounting assemblies. When the sleeve 136 rotates, the two mounting rods 137 are respectively driven by the two driving surfaces 1361 to insert into or withdraw from the corresponding mounting holes 220. With the above arrangement, each weight plate 200 can be mounted on the dumbbell main body 100 through the two mounting rods 137, further improving the mounting reliability of the weight plate 200 on the dumbbell main body 100.

[0045] In some embodiments of the present application, the two mounting assemblies are arranged at intervals in the circumferential direction of the sleeve 136, and the two driving surfaces 1361 are rotationally symmetrically arranged along the axis of the sleeve 136. With the above arrangement, when the holding part 120 is in the initial set position, the user can adjust the weight level by rotating the holding part 120 in the clockwise or counterclockwise direction, improving the convenience of adjusting the weight level.

[0046] Optionally, the two mounting assemblies are arranged on opposite sides of the sleeve 136, and the two driving surfaces 1361 are centrosymmetrically arranged along the axis of the sleeve 136.

[0047] Please refer to Att Figure 2-4 and 7, each weight adjustment part 130 includes three weight adjustment structures 134, each weight group includes three weight plates 200, and the weights of the three weight plates 200 are 1KG, 2KG, and 2KG respectively in the direction from the outside to the inside. The dumbbell device has 12 weight levels arranged circumferentially along the holding part 120, and the 12 weight levels are respectively the first weight level to the twelfth weight level in the clockwise direction along the holding part 120. The weights corresponding to the Nth weight level and the (N + 6)th weight level are the same. The weights of the dumbbell device in the first weight level to the sixth weight level are 2kG, 4kG, 6kG, 8kG, 10kG, and 12kG respectively, and the first weight level is the initial weight level of the dumbbell device. When the dumbbell main body 100 is at the initial weight level, the user can rotate the holding part 120 in one rotation direction to gradually increase from the minimum weight to the maximum weight, or rotate the holding part 120 in the reverse direction to directly switch from the minimum weight to the maximum weight and can continue to gradually decrease from the maximum weight to the minimum weight, facilitating the user to quickly adjust to the weight level with a large weight. It should be understood that when the dumbbell main body 100 is at the first weight level and the seventh weight level, the dumbbell main body 100 does not mount the weight plates 200, and the weights corresponding to the first weight level and the seventh weight level of the dumbbell device are the self-weights of the dumbbell main body 100 when no weight plates 200 are mounted.

[0048] The sleeves 136 of the three counterweight adjusting parts 130 each have two driving surfaces 1361, and the two driving surfaces 1361 are symmetrically arranged along the axis of the sleeve 136. Each driving surface 1361 has three convex parts 1362 and three concave parts 1363. In the direction from outside to inside, the three sleeves 136 in each counterweight adjusting part 130 are the first sleeve 136, the second sleeve 136, and the third sleeve 136 respectively. In the first sleeve 136, in the clockwise direction, the arrangement order of the three concave parts 1363 and the three convex parts 1362 on each driving surface 1361 is concave part 1363, convex part 1362, concave part 1363, convex part 1362, concave part 1363, and convex part 1362; in the second sleeve 136, in the clockwise direction, the arrangement order of the three concave parts 1363 and the three convex parts 1362 on each driving surface 1361 is concave part 1363, concave part 1363, concave part 1363, convex part 1362, convex part 1362, and convex part 1362, where three adjacent concave parts 1363 are connected together and three adjacent convex parts 1362 are also connected together; in the third sleeve 136, in the clockwise direction, the arrangement order of the three concave parts 1363 and the three convex parts 1362 on each driving surface 1361 is concave part 1363, concave part 1363, convex part 1362, concave part 1363, convex part 1362, and convex part 1362, where two adjacent concave parts 1363 are connected together and two adjacent convex parts 1362 are also connected together.

[0049] In the first counterweight gear and the seventh counterweight gear, the first concave part 1363 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the first concave part 1363 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the first concave part 1363 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell main body 100 is not mounted with the counterweight discs 200, so that the counterweights corresponding to the first counterweight gear and the seventh counterweight gear are both 2KG.

[0050] In the second counterweight gear and the eighth counterweight gear, the first convex part 1362 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the second concave part 1363 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the second concave part 1363 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell main body 100 is only mounted with the two outer counterweight discs 200, so that the counterweights corresponding to the second counterweight gear and the eighth counterweight gear are both 4KG.

[0051] In the third weight configuration and the ninth weight configuration, the second recess 1363 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the third recess 1363 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the first protrusion 1362 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell body 100 mounts two weight plates 200 on the inner side, so that the weights corresponding to the third weight configuration and the ninth weight configuration are both 6KG.

[0052] In the fourth weight configuration and the tenth weight configuration, the second protrusion 1362 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the first protrusion 1362 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the third recess 1363 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell body 100 mounts two weight plates 200 on the outer side and two weight plates 200 in the middle, so that the weights corresponding to the fourth weight configuration and the tenth weight configuration are both 8KG.

[0053] In the fifth weight configuration and the eleventh weight configuration, the third recess 1363 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the second protrusion 1362 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the second protrusion 1362 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell body 100 mounts two weight plates 200 on the inner side and two weight plates 200 in the middle, so that the weights corresponding to the fifth weight configuration and the eleventh weight configuration are both 10KG.

[0054] In the sixth weight configuration and the twelfth weight configuration, the third protrusion 1362 on the driving surface 1361 of the first sleeve 136 cooperates with the mounting rod 137, the third protrusion 1362 on the driving surface 1361 of the second sleeve 136 cooperates with the mounting rod 137, and the third protrusion 1362 on the driving surface 1361 of the third sleeve 136 cooperates with the mounting rod 137. At this time, the dumbbell body 100 mounts all six weight plates 200, so that the weights corresponding to the sixth weight configuration and the twelfth weight configuration are both 12KG.

[0055] In some embodiments of the present application, the mounting rod 137 is kept in contact with the driving surface 1361 under the drive of the first elastic member 138 to improve the cooperation reliability between the driving surface 1361 and the mounting rod 137.

[0056] Please refer to the appendix Figure 7, the convex portion 1362 has a first contact surface that cooperates with the push rod in a pushing manner, and the concave portion 1363 has a second contact surface that contacts the push rod. Both the first contact surface and the second contact surface are arc surfaces. The push rod has a hemispherical pushing end and contacts the driving surface 1361 through the pushing end, so that the movement contact between the mounting rod 137 and the driving surface 1361 is relatively smooth, and the rotation smoothness of the holding portion 120 is better and the noise is small when adjusting the counterweight gear.

[0057] Of course, in other embodiments, when the concave portion 1363 on the driving surface 1361 passes by the push rod, there is a gap between the push rod and the concave portion 1363.

[0058] Please refer to the appendix Figure 2 , in some embodiments of the present application, the counterweight disc 200 is provided with a first accommodation groove 210. One end of the first accommodation groove 210 penetrates through the counterweight disc 200 and forms a first opening. The first accommodation groove 210 is used to accommodate the counterweight adjustment structure 134, and the counterweight adjustment structure 134 enters and exits the first accommodation groove 210 through the first opening. The two groove side walls of the first accommodation groove 210 are in limit cooperation with the mounting structure located in the first accommodation groove 210 to limit the movement of the counterweight adjustment structure 134 in the width direction of the first accommodation groove 210.

[0059] There is an included angle between the axial direction of the mounting hole 220 and the opening direction of the first accommodation groove 210. Specifically: the axial direction of the mounting hole 220 and the opening direction of the first accommodation groove 210 are inclined or perpendicular. Preferably, the axial direction of the mounting hole 220 and the opening direction of the first accommodation groove 210 are perpendicular to each other, so that the mounting stability of the mounting structure to the counterweight disc 200 is good. Preferably, the mounting hole 220 is provided on the groove side wall of the first accommodation groove 210 to simplify the structure of the counterweight disc.

[0060] When it is necessary to adjust the counterweight of the dumbbell body 100, the dumbbell body 100 needs to be placed on the base 300. At this time, each counterweight adjustment structure 134 on the dumbbell body 100 is accommodated in the first accommodation groove 210 of the corresponding counterweight disc 200, and then the required counterweight disc 200 to be mounted is selected by rotating the holding portion 120.

[0061] It should be understood that when the counterweight adjustment structure 134 mounts the counterweight disc 200, under the combined limiting action of the first accommodation groove 210 and the mounting rod 137, the counterweight adjustment structure 134 is fixed in the first accommodation groove 210.

[0062] Please refer to the appendix Figure 4-68, in some embodiments of the present application, the holding portion 120 includes a holding tube 121, the holding tube 121 is movably sleeved on the dumbbell rod 110, the inner end caps 132 of the two weight adjustment portions 130 are respectively movably sleeved on both ends of the holding tube 121, and the end of the holding tube 121 and the adjacent sleeve 136 are non-rotatably engaged. Tube end caps 122 are provided at both ends of the holding tube 121, and the tube end caps 122 are located on the side of the inner end cap 132 away from the outer end cap 131. The two tube end caps 122 are respectively snap-fitted with the inner end caps 132 of the two weight adjustment portions 130 to form an installation cavity. A locking structure is provided in the installation cavity, and the locking structure includes an adjustment disc 141 and a stop assembly. The adjustment disc 141 is sleeved on the outer periphery of the holding tube 121, and the adjustment disc 141 is non-rotatably engaged with the holding tube 121 so that it can rotate with the holding tube 121. A plurality of stop protrusions 1411 are provided at the outer end of the adjustment disc 141 at circumferential intervals. The plurality of stop protrusions 1411 all extend in a direction away from the tube end cap 122, and an avoidance gap 1412 is formed between any two adjacent stop protrusions 1411. A second accommodation groove 1321 and a third accommodation groove 1322 are provided on the side of the inner end cap 132 close to the tube end cap 122. One end of the second accommodation groove 1321 penetrates through the outer peripheral surface of the inner end cap 132 to form a second opening 1323. The third accommodation groove 1322 is annular and surrounds the holding tube 121. The second accommodation groove 1321 and the third accommodation groove 1322 intersect, and the second opening 1323 is located outside the third accommodation groove 1322. The stop assembly is accommodated in the second accommodation groove 1321, and the plurality of stop protrusions 1411 of the adjustment disc 141 extend into the third accommodation groove 1322. The stop assembly includes a second elastic member 143 and a stop block 142. The second elastic member 143 is located on the side of the stop block 142 away from the second opening 1323. A limiting protrusion is provided on the inner wall of the second opening 1323, and the limiting protrusion is located outside the rotation path of the stop protrusion 1411. The limiting protrusion is used for limiting cooperation with the stop block 142 to limit the stop block 142 from disengaging from the second accommodation groove 1321. The second accommodation groove 1321 can be divided into a first groove section and a second groove section along the axial direction of the holding tube 121. The second groove section is located on the side of the first groove section away from the tube end cap 122. The stop block 142 and the second opening 1323 are both located in the first groove section and the second groove section. Among them, the rotation path of the non-rotating protrusion 1364 intersects with the first groove section, and the rotation path of the non-rotating protrusion 1364 does not intersect with the second groove section, that is, when the adjustment disc 141 rotates, the stop protrusion 1411 passes through the first groove section and does not pass through the second groove section. The plurality of first avoidance gaps 1412 are provided in one-to-one correspondence with the plurality of weight positions of the dumbbell device. When the dumbbell main body 100 is in any weight position, the corresponding avoidance gap 1412 is located in the first groove section.When there is an avoidance gap 1412 in the first slot section, at this time, the stop block 142 can pass through the avoidance gap 1412 under the drive of the second elastic member 143, and the stop block 142 is located between two stop protrusions 1411 forming the avoidance gap 1412 and is in anti-rotation cooperation with the two stop protrusions 1411, so that the holding part 120 is in the locked state.

[0063] The adjustment disc 141 is provided with a plurality of bead holes 1413 arranged at intervals in the circumferential direction around the dumbbell rod 110, and the plurality of bead holes 1413 are arranged in one-to-one correspondence with the plurality of avoidance gaps 1412. The corresponding bead holes 1413 and avoidance gaps 1412 are arranged at intervals in the radial direction of the adjustment disc 141. On the side of the inner end cover 132 close to the tube end cover 122, there is at least one ball mounting hole 1414. A ball is movably mounted in the ball mounting hole 1414. A third elastic member is provided in the ball mounting hole 1414 and the third elastic member is used to apply an outward elastic force to the ball so that the ball abuts against the adjustment disc 141. When the dumbbell body 100 is in any weight position, the ball is clamped in one of the bead holes 1413 to pre-maintain the holding part 120 in the weight position. The third elastic member can be but is not limited to a spring.

[0064] The base 300 is provided with unlocking members corresponding to the two locking structures one by one, and the unlocking members are located between the two weight plate placement parts. The unlocking member includes an unlocking plate 320, and the unlocking plate 320 is arranged on the base 300. When the dumbbell body 100 is placed on the base 300, the unlocking plate 320 is inserted into the second accommodating groove 1321 along the second slot section through the second opening 1323, and pushes the stop block 142 to move out of the avoidance gap 1412, releasing the anti-rotation cooperation between the stop block 142 and the stop protrusion 1411. At the same time, the unlocking plate 320 is located in the second slot section at this time and does not interfere with the rotation of the adjustment disc 141, so that the holding part 120 can rotate freely at this time, realizing that the holding part 120 is in the unlocked state; when the dumbbell body 100 is picked up from the base 300, the unlocking member can exit from the second accommodating groove 1321, and the stop protrusion 1411 is inserted into one of the avoidance gaps 1412 under the drive of the second elastic member 143. At this time, the stop protrusion 1411 is in anti-rotation cooperation with the two stop protrusions 1411 forming the avoidance gap 1412, so that the holding part 120 cannot rotate at this time, realizing that the holding part 120 is in the locked state.

[0065] Optionally, in order to improve the reliability of the unlocking plate 320 when pushing the stop block 142 to move, the unlocking plate 320 can be an L-shaped plate. The unlocking plate 320 includes a vertical plate 321 and a horizontal plate 322. One end of the vertical plate 321 is connected to the base 300 and the other end is connected to the horizontal plate 322. When the unlocking plate 320 enters and exits the second receiving groove 1321, the horizontal plate 322 passes through the avoidance gap 1412. At the same time, when pushing the stop block 142 out of the avoidance gap 1412, the horizontal plate 322 in the unlocking plate 320 is located inside the rotation path of the stop projection 1411 to avoid the horizontal plate 322 interfering with the rotation of the adjustment disk 141. The second elastic member can be, but is not limited to, a spring or the like.

[0066] It should be understood that the above-mentioned terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is more than two.

[0067] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above-mentioned features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A dumbbell device, characterized in that, Comprising: A dumbbell body, the dumbbell body including a dumbbell rod, a grip portion provided on the dumbbell rod, and two weight adjustment portions. The grip portion is located between the two weight adjustment portions and is rotatably sleeved on the outer periphery of the dumbbell rod around the axial direction of the dumbbell rod. The weight adjustment portion includes a plurality of weight adjustment structures arranged along the axial direction of the dumbbell rod. The weight adjustment structure includes a mounting member, a sleeve, a mounting rod, and a first elastic member. The sleeve is movably sleeved on the dumbbell rod and is rotationally locked with the grip portion. The outer periphery of the sleeve is provided with an uneven driving surface. The mounting rod is located on the outer peripheral side of the sleeve and is movably arranged on the mounting member in a direction close to or away from the sleeve. The first elastic member is arranged between the mounting member and the mounting rod to apply an elastic force to the mounting rod in a direction moving towards the sleeve. A weight device, the weight device including a plurality of weight plates corresponding to and used in cooperation with the plurality of weight adjustment structures one by one. The weight plate is provided with a mounting hole. When the grip portion rotates, the mounting rod can be driven by the driving surface to insert into or withdraw from the mounting hole.

2. The dumbbell device according to claim 1, characterized in that, The driving surface has a plurality of convex portions arranged along the circumferential direction of the sleeve. The convex portions are used to drive the mounting rod to insert into the mounting hole. In the weight adjustment portion, some of the convex portions in any two or more of the driving surfaces are oppositely arranged along the axial direction of the dumbbell rod.

3. The dumbbell device according to claim 2, characterized in that, The mounting rod and the first elastic member form a mounting assembly. The weight adjustment structure includes two such mounting assemblies. The weight plate is provided with two mounting holes, and the two mounting holes are correspondingly arranged with the mounting rods in the two mounting assemblies one by one. The sleeve is provided with two driving surfaces. When the sleeve rotates, the two mounting rods are respectively driven by the two driving surfaces to both insert into or both withdraw from the corresponding mounting holes.

4. The dumbbell device according to claim 3, wherein, The two mounting assemblies are arranged on both sides of the sleeve, and the two driving surfaces are centrosymmetrically arranged along the axis of the sleeve.

5. The dumbbell device according to claim 1, characterized in that, The mounting rod is kept in contact with the driving surface under the drive of the first elastic member.

6. The dumbbell device according to claim 1, characterized in that, In the weight adjustment portion, any two adjacent sleeves are rotationally locked with each other, and the sleeve close to the grip portion is rotationally locked with the grip portion.

7. The dumbbell device according to claim 1, characterized in that, At least some of the plurality of weight plates have different weights.

8. The dumbbell device according to claim 1, characterized in that The weight plate is provided with a first accommodation groove for accommodating the weight adjustment structure. There is an included angle between the axial direction of the mounting hole and the opening direction of the first accommodation groove.

9. The dumbbell device according to claim 8, characterized in that, The axial direction of the mounting hole is perpendicular to the opening direction of the first accommodation groove.

10. The dumbbell device according to claim 8, characterized in that, The mounting hole is arranged on the groove side wall of the first accommodation groove.

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