Dumbbell

Abstract

The dumbbell comprises a handle, a balance weight adjusting mechanism and a plurality of sets of balance weight pieces arranged at the two axial ends of the handle respectively, the handle comprises a rotary drum and a telescopic rod arranged in the rotary drum in a penetrating mode, and the balance weight adjusting mechanism comprises a fluted disc and a rotary disc which are coaxially arranged with the rotary drum. And the rotary table is fixedly connected with the rotary drum. According to the dumbbell in the combination mode of the handle, the weight stacks and the weight adjusting mechanism, through linkage of the driving wheel of the weight adjusting mechanism and the telescopic handle, a user can achieve hanging of the weight stacks of different numbers by directly rotating the handle, the weight stacks do not need to be installed one by one, and therefore the weight stacks are convenient to install. And meanwhile, through the matched arrangement of the driving wheel and the groove rails in the two directions, in the process that the user continuously rotates the handle, the telescopic rod stretches out section by section in a single-time fixed-length mode and is matched with the thickness of the weight stack, and the user can accurately and quantitatively control the telescopic length.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fitness equipment technical field relates to a dumbbell. BACKGROUND

[0002] Dumbbell is a kind of auxiliary equipment for bodybuilding, mainly divided into commercial and household two, commercial dumbbell exists place advantage, therefore can directly set into different specifications multiple and use, and for the household dumbbell product generated under the small space use demand of family, most of the existing market products are in detachable form, before use, user needs to manually operate and install multiple independent dumbbell pieces in turn on the handle, and is fastened by bolt connector, more operation steps, which leads to the installation preparation work before use and the weight replacement operation in use of user, it is extremely cumbersome, easily affects the exercise enthusiasm of user, brings the use experience of poor, and the dumbbell of detachable form needs to reserve larger length for handle, to adapt to different weights, the handle of too long further causes the inconvenience of user's use experience. SUMMARY

[0003] The utility model discloses a dumbbell to overcome the defects of prior art.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A dumbbell, including handle, counterweight adjusting mechanism and multiple groups of counterweight pieces arranged at the axial two ends of the handle respectively, the handle includes a rotating drum and a telescopic rod penetrating in the rotating drum, the counterweight adjusting mechanism includes a gear disc coaxially arranged with the rotating drum and a rotating disc, the rotating disc is fixedly connected with the rotating drum, a driving wheel is arranged on the circumferential direction of the rotating disc, multiple grooves are spirally arranged on the end face of the gear disc, the grooves are equally divided into multiple first direction sub-tracks and second direction sub-tracks which are sequentially and spaced connected along the circumferential direction, the first direction sub-tracks are arranged along the circumferential direction of the gear disc, and the second direction sub-tracks are arranged at a set angle along the radial direction of the gear disc relative to the first direction sub-tracks;Multiple gear slots are arranged on the telescopic rod and arranged in an array along the axial direction, and the driving wheel is engaged with the grooves and the gear slots simultaneously.

[0006] Further, a limiting wave bead is fixedly arranged on the rotating disc, the limiting wave bead includes a sleeve and a ball head, a spring is arranged in the sleeve and used for abutting the ball head at the opening of the sleeve, multiple stop slots are arranged in an annular array on the circumferential direction of the end face of the gear disc, and the ball head and the stop slots have a mutual cooperation trend in the rotation of the rotating disc.

[0007] Further, the number of the driving wheels is set to be multiple, and the driving wheels are arranged in a ring array centered on the axis of the rotating drum.

[0008] Further, a counting assembly is further included, the counting assembly comprising a counting ring, a planetary gear set, an inner ring gear and a counting gear, the counting gear being coaxially arranged on the rotating disc, the counting ring being coaxially sleeved on the outer periphery of the rotating disc, the planetary gear set being arranged on the circumferential direction of the counting ring, the inner ring gear being fixedly arranged, the inner and outer sides of the planetary gear set being respectively engaged with the counting gear and the inner ring gear, and the outer periphery of the counting ring being provided with weight marks.

[0009] Further, a counterweight half is further included, the counterweight half being provided with a hook upwardly at the middle part, and a plurality of flanges being arranged in a ring array on the outer periphery of the rotating disc in the circumferential direction, the flanges being located directly below the hook when the rotating disc is set to rotate.

[0010] Further, a locking disc is further included, the locking disc being arranged on the outer periphery of the rotating disc, the outer periphery of the rotating disc being provided with ring teeth, the inner periphery of the locking disc being provided with rotation-stopping teeth, and the locking disc being provided with a top spring for driving the rotation-stopping teeth to engage with the ring teeth.

[0011] Further, a base for placing the dumbbell is further included, the base being provided with a top block for abutting against the locking disc in the vertical direction.

[0012] Further, a locking block is further included, the counterweight piece being in the form of a disc with a set thickness, the middle part of the counterweight piece being provided with a through hole for the telescopic rod to pass through, the outer periphery of the counterweight piece being provided with a notch for inserting the locking block, and the locking block being connected with two adjacent counterweight pieces.

[0013] Further, the top and bottom parts of the counterweight piece are respectively provided with the notches, the inner wall of the notches being recessed to provide an insertion slot for the locking block to be inserted, the insertion slot being provided with a latch pin to be inserted, the outer periphery of the locking block being provided with a semicircular opening for cooperating with the outer periphery of the latch pin, and the locking block being provided with a clamping groove and a clamping plate, the clamping groove and the clamping plate being respectively connected with the adjacent clamping plate and the adjacent clamping groove.

[0014] Further, the counterweight adjusting mechanism further comprises an end plate and a shell, the end plate and the shell are fixedly connected and form a cavity for accommodating the rotating disc, an outer end surface of the end plate is connected with the counterweight piece, a gear disc is fixedly connected to an inner end surface of the end plate, and the rotating drum is arranged through the shell and the end plate; a periphery of the driving wheel is provided with spherical gears, a rotation direction plane of the driving wheel coincides with an axis of the rotating drum, and a through groove is formed in an outer wall of the rotating drum for the driving wheel to pass through; further comprising a counting assembly, the counting assembly comprises a counting ring, a planetary gear set, an inner gear ring and a counting gear, the counting gear is coaxially arranged on the rotating disc, the counting ring is coaxially sleeved on the periphery of the rotating disc, the planetary gear set is arranged in the circumferential direction of the counting ring, the inner gear ring is arranged on the inner periphery of the shell, the inner and outer sides of the planetary gear set are respectively engaged with the counting gear and the inner gear ring, the periphery of the counting ring is provided with a weight mark, and the outer wall of the shell is provided with a viewing window for observing the periphery of the counting ring; further comprising a counterweight half piece, the counterweight half piece is arranged on the lower side of the shell, a hook is arranged on the middle part of the counterweight half piece upwards, and an opening is arranged on the bottom of the shell for the hook to pass through upwards; further comprising a locking disc, the locking disc is arranged on the periphery of the rotating disc, a top spring is arranged on the locking disc, and two ends of the top spring are respectively connected with the locking disc and the end plate.

[0015] In summary, the dumbbell has the advantages that:

[0016] The dumbbell with the handle, the counterweight piece and the counterweight adjusting mechanism has the advantages that: the driving wheel of the counterweight adjusting mechanism is connected with the telescopic handle, so that the user can directly rotate the handle to realize the mounting of different numbers of the counterweight pieces, without the need of mounting the counterweight pieces one by one, thereby greatly simplifying the operation of the user before use and during replacement, and the driving wheel is matched with the groove tracks in two directions, so that the telescopic rod is extended in a single fixed length during the continuous rotation of the handle, and the telescopic length is accurately controlled, thereby greatly improving the use experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the dumbbell and the base.

[0018] Figure 2 It is a structural schematic view of the dumbbell and the base. Figure 1 It is a sectional structure schematic view.

[0019] Figure 3 It is a sectional structure schematic view of another embodiment. Figure 2 It is a sectional structure schematic view of another embodiment.

[0020] Figure 4This is a schematic diagram of a portion of the internal structure of the counterweight adjustment mechanism in this utility model.

[0021] Figure 5 for Figure 4 A schematic diagram of the explosion structure.

[0022] Figure 6 for Figure 5 Schematic diagrams of the explosion structure in some other embodiments.

[0023] Figure 7 for Figure 4 A schematic diagram of the explosion structure from another perspective.

[0024] Figure 8 for Figure 7 Schematic diagrams of the explosion structure in some other embodiments.

[0025] Figure 9 This is a schematic diagram of the structure of the turntable and locking disc in this utility model.

[0026] Figure 10 This is a schematic diagram of the meshing structure of the drive wheel, the gear disc, and the telescopic rod in this utility model.

[0027] Figure 11 for Figure 10 Schematic diagrams of other embodiments.

[0028] Figure 12 for Figure 10 A schematic diagram of the gear disc structure.

[0029] Figure 13 for Figure 11 A schematic diagram of the gear disc structure.

[0030] Figure 14 This is a schematic diagram of the structure of the turntable and drive wheel in this utility model.

[0031] Figure 15 for Figure 14 Schematic diagrams of other embodiments.

[0032] Figure 16 This is a schematic diagram of the base structure in this utility model.

[0033] Identified in the figure: 11, rotating drum; 111, through slot; 12, telescopic rod; 121, tooth groove; 21, outer shell; 22, end plate; 23, rotating disc; 231, counting gear; 232, ring tooth; 233, flange; 234, limit wave bead; 24, drive wheel; 25, toothed disc; 251, first direction sub-track; 252, second direction sub-track; 253, gear slot; 26, locking disc; 261, top spring; 262, rotation-stopping tooth; 27, counting ring; 271, planetary gear set; 28, counterweight half; 281, lifting hook; 3, counterweight piece; 31, through hole; 32, notch; 331, first locking block; 332, second locking block; 4, base; 41, recess; 42, top block. DETAILED DESCRIPTION

[0034] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0035] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component can be arbitrarily changed when actually implemented, and the component layout pattern can also be more complex.

[0036] All directional indications (such as up, down, left, right, front, back, transverse, longitudinal, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0037] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present application may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0038] The present embodiment provides a dumbbell, as shown in the accompanying drawings, which comprises a handle and counterweight pieces 3 located on both sides of the handle, and a counterweight adjusting mechanism for fixedly connecting the handle with any set number of counterweight pieces 3. Figure 1

[0039] Specifically, referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and​Figure 6 The handle comprises a rotating drum 11 and a telescopic rod 12. The rotating drum 11 is a hollow straight tubular structure, and the outer periphery of the rotating drum 11 is knurled for anti-skid. The telescopic rod 12 is arranged in the rotating drum 11 along the axial direction of the rotating drum 11. The telescopic rod 12 is in clearance fit with the rotating drum 11, so that the telescopic rod 12 can rotate and move axially relative to the rotating drum 11. The number of the telescopic rods 12 is two, and the telescopic rods 12 are symmetrically arranged on the two axial sides of the rotating drum 11.

[0040] The weight piece 3 is a disc-shaped structure with a certain thickness. The outer periphery shape of the weight piece 3 includes but is not limited to a circle, a square, a polygon, etc. A plurality of groups of the weight pieces 3 are arranged in a stacked manner along the axial direction of the rotating drum 11. The two ends of the axial direction of the rotating drum 11 are respectively provided with a plurality of groups of the weight pieces 3. The middle part of the weight piece 3 is provided with a through hole 31. When the weight piece 3 is arranged, the through hole 31 is located on the axis of the rotating drum 11, so that the telescopic rod 12 can pass through the through hole 31 when the telescopic rod 12 moves axially.

[0041] The weight adjusting mechanism is arranged in two groups and is respectively arranged at the two ends of the axial direction of the rotating drum 11, so as to be respectively used for connecting the two groups of the weight pieces 3 on the two sides of the rotating drum 11 with the two ends of the rotating drum 11. The weight adjusting mechanism comprises an end plate 22 and a shell 21. The end plate 22 is fixedly connected with the shell 21, and an inner cavity is formed. The rotating drum 11 is sequentially arranged in the shell 21 and the end plate 22 along the axial direction thereof, so that the rotating drum 11 passes through the inner cavity at the same time. The rotating drum 11 can rotate relative to the shell 21, and the rotating drum 11 can also rotate relative to the end plate 22. The outer end surface of the end plate 22 is in abutting connection with the closest weight piece 3 on the corresponding side thereof.

[0042] It can also be referred to Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 14 and Figure 15 The weight adjusting mechanism further comprises a rotating disc 23, a driving wheel 24 and a toothed disc 25 arranged in the inner cavity. The toothed disc 25 is fixedly arranged on the inner end surface of the end plate 22, coaxial with the inner end surface and penetrable in the middle part to allow the rotating drum 11 or the telescopic rod 12 to pass through. The rotating disc 23 is coaxially sleeved on the outer periphery of the rotating drum 11. The rotating disc 23 is fixedly connected with the rotating drum 11 by means of spline or the like to form a rotation-stopping connection, so as to synchronously drive the rotating disc 23 to rotate when the rotating drum 11 rotates. A plurality of driving wheels 24 are arranged on the outer periphery of the rotating drum 11 in the radial direction. The axis of the driving wheel 24 is perpendicular to the axis of the rotating drum 11. More specifically, the rotation direction plane of the driving wheel 24 coincides with the axis of the rotating drum 11. The rotating disc 23 is provided with a clamping groove. The shaft of the driving wheel 24 is clamped and arranged in the clamping groove. When the rotating disc 23 rotates, the driving wheel 24 is synchronously driven to rotate as a whole with the axis of the rotating drum 11 as the center.

[0043] In some preferred embodiments, the number of driving wheels 24 is set to three, or to two, and the driving wheels 24 are arranged in a circular array centered on the axis of the rotating drum 11 to improve the stability of the driving transmission of the driving wheels 24.

[0044] With reference to Figure 10 , Figure 11 , Figure 12 and Figure 13 , the outer periphery of the driving wheel 24 is provided with a spherical tooth structure, and the end surface of the tooth disc 25 is sequentially arranged in a circumferential direction to form a plurality of grooves arranged in a vortex shape. One or more spherical teeth on the driving wheel 24 form a spherical surface with the plurality of grooves, and when the driving wheel 24 rotates, the groove becomes a track for the spherical tooth to move along the circumferential direction of the tooth disc 25. The track has a first direction and a second direction when arranged along the circumferential direction of the tooth disc 25. In this embodiment, the track is divided into a plurality of parts along the circumferential array of the tooth disc 25, including a plurality of first direction sub-tracks 251 and a plurality of second direction sub-tracks 252. The first direction sub-tracks 251 and the second direction sub-tracks 252 are sequentially and spacedly arranged. The first direction sub-tracks 251 are in the same direction as the circumferential direction of the tooth disc 25, and the second direction sub-tracks 252 are inclined at an angle relative to the first direction sub-tracks 251 in the radial direction of the tooth disc 25. Preferably, the first direction sub-tracks 251 and the second direction sub-tracks 252 are each provided with three.

[0045] The spherical tooth and the track form a spherical surface fit. When the driving wheel 24 rotates, the spherical tooth moves along the track in the circumferential direction. When the driving wheel 24 moves along any first direction track, the driving wheel 24 does not rotate. When the driving wheel 24 moves along any second direction track, the driving wheel 24 rotates by a set angle.

[0046] The number of driving wheels 24 and the number of grooves do not have a special corresponding relationship. Only when multiple driving wheels 24 are engaged at the same position on the multiple first direction sub-tracks 251 or at the same position on the multiple second direction sub-tracks 252 at the same time.

[0047] A through groove 111 is formed on the outer wall of the rotating drum 11, which is connected to the inner side of the rotating drum 11. The outer periphery of the telescopic rod 12 is provided with a plurality of tooth rows, each of which includes a plurality of tooth grooves 121 arranged in an axial array along the telescopic rod 12. The plurality of tooth rows are arranged in a circumferential array along the telescopic rod 12 to form engagement with the plurality of driving wheels 24. Part of the driving wheel 24 passes through the through groove 111, so that the spherical tooth and the tooth groove 121 form a spherical surface fit. When the driving wheel 24 rotates, the driving wheel 24 drives the telescopic rod 12 to move axially.

[0048] When the dumbbell weight setting is performed, first, a plurality of groups of weight plates 3 are arranged on both sides of the handle, preferably the number of weight plates 3 on both sides of the handle is consistent, the user can drive the rotation of the drum 11 by hand, drive the rotation of the turntable 23 and the drive wheel 24, further drive the rotation of the drive wheel 24 through the gear 25 to drive the telescopic rod 12 to move out, by rotating the drum 11 to set the angle, the telescopic rod 12 is extended to a set length, the telescopic rod 12 passes through the plurality of groups of weight plates 3 along the axial direction, thereby forming vertical contact support to the passing weight plates 3, so that the dumbbell can be lifted at this time.

[0049] In order to intuitively reflect the weight of the user, the weight adjusting mechanism further comprises a counting assembly, referring to Figure 1 、 Figure 4 、 Figure 7 and Figure 8 , the counting assembly comprises a counting ring 27, a planetary gear set 271, and a counting gear 231, the counting gear 231 is coaxially fixedly connected to the turntable 23, the planetary gear set 271 is arranged on the outer periphery of the drum 11 in the radial direction, in the embodiment, the planetary gear set 271 preferably comprises a plurality of planetary gears, and is distributed in a ring array around the drum 11, the inner periphery of the shell 21 is provided with an inner ring gear, the outer side of the planetary gear is engaged with the inner ring gear, and the inner side is engaged with the counting gear 231, so that when the rotation of the drum 11 drives the rotation of the turntable 23 and the counting gear 231, the planetary gear will be driven to rotate.

[0050] The counting ring 27 is coaxially sleeved on the outer periphery of the drum 11 and can rotate relatively, one end of the axial center of the planetary gear is arranged in the counting ring 27, so that when the planetary gear rotates, the counting ring 27 will also rotate synchronously, the counting ring 27 is provided with a plurality of weight marks arranged in sequence in the circumferential direction on the outer side, specifically kilogram value symbols, each kilogram value symbol corresponds to different weight information, a window is formed at the top position of the shell 21, and the user can observe the kilogram value symbol at the current position through the window.

[0051] Further, the end surface of the gear disc 25 is provided with a plurality of semispherical position grooves arranged in a circumferential annular array, and the rotating disc 23 is provided with a plurality of limiting beads 234 arranged in a circumferential annular array relative to the end surface of the gear disc 25. The limiting bead 234 comprises a sleeve and a ball head. One end of the sleeve is fixedly connected to the rotating disc 23, and the other end of the sleeve is provided with an open structure. The ball head is connected to the opening of the sleeve and can move into the sleeve. A spring is arranged in the sleeve for maintaining the ball head in the opening. The ball head of the limiting bead 234 faces the side of the gear disc 25 and abuts against the end surface of the gear disc 25. The ball head is partially pressed into the sleeve. The circumference formed by the plurality of limiting beads is the same as the circumference formed by the plurality of position grooves. Therefore, when the rotating disc 23 rotates, the limiting beads 234 rotate along the end surface of the gear disc 25. During the rotation, any ball head of the limiting beads 234 will be opposite to any position groove, so that the ball head is popped into the position groove. With the continuous rotation of the rotating disc 23, the ball head is separated from the position groove and cooperates with the next position groove in the moving direction.

[0052] In the embodiment, the distance between the adjacent tooth grooves 121 in the gear row is equal to the thickness of the single weight piece 3. Therefore, when the telescopic rod 12 moves in the axial direction by the distance between the adjacent tooth grooves 121, the length of the telescopic rod 12 can carry one more weight piece 3. At the same time, the driving wheel 24 can move on the gear disc 25 by the distance of one first direction sub-track 251 and one second direction sub-track 252 in sequence. The rotating disc 23 can rotate relative to the gear disc 25 by an angle between two adjacent position grooves, so that the limiting bead 234 moves from one position groove to the next position groove.

[0053] Through the arrangement of the counting assembly, when the user sets the weight pieces 3 by operating the handle, the rotating drum 11 rotates in the rotating process, and the counting ring 27 rotates by the corresponding angle in linkage, so as to display the current kilogram value symbol in the window in real time. Therefore, the user can obtain the weight information of the weight pieces 3 carried by the handle by observing the window. In the operation process, the cooperation between the limiting bead 234 and the position groove can also generate corresponding tactile feedback on the handle, so that the user can perceive it.

[0054] In order to ensure the close stacking of the plurality of weight pieces 3 in the axial direction and prevent the weight pieces 3 from falling off during the use of the dumbbell, a locking block is further arranged in the embodiment. Referring to Figure 1 , Figure 5 , Figure 6 The locking block comprises a first locking block 331 and a plurality of second locking blocks 332. The first locking block 331 is used for connecting the end plate 22 and the weight piece 3. The second locking block 332 is used for connecting the adjacent weight pieces 3.

[0055] Specifically, the weight plate 3 is provided with a crescent-shaped notch 32 in the circumferential direction. In this embodiment, the top and bottom of the weight plate 3 are respectively provided with the notch 32. The inner wall of the notch 32 is provided with a slot. The weight plate 3 is provided with a plug pin in the axial direction. The plug pin is arranged through the slot. The second locking block 332 is in a crescent-shaped structure. The second locking block 332 cooperates with the notch 32 of the weight plate 3 to form a complete circle. The outer wall of the second locking block 332 is provided with a plug piece. The plug piece is provided with a semicircular opening matched with the outer circumference of the plug pin. The plug piece is inserted into the slot and matched with the plug pin to realize the close fit between the second locking block 332 and the weight plate 3. The second locking block 332 is sequentially provided with a clamping groove and a clamping plate. When a plurality of weight plates 3 are arranged, the clamping groove on the current second locking block 332 is used for clamping the clamping plate on the second locking block 332 of the adjacent previous weight plate 3. The clamping plate on the current second locking block 332 is clamped into the clamping groove of the second locking block 332 of the adjacent next weight plate 3 to realize the close connection between the plurality of weight plates 3.

[0056] The end plate 22 is also provided with a crescent-shaped notch 32 in the circumferential direction. One side of the first locking block 331 is inserted into the notch 32 and closely fitted with the end plate 22. The other side is provided with a clamping plate for being inserted into the clamping groove of the second locking block 332 on the adjacent closest weight plate 3 to realize the close connection between the weight plate 3 and the end plate 22.

[0057] In order to provide stable placement for the dumbbell and facilitate the weight adjustment operation of the user, the base 4 is further arranged in this embodiment. Referring to Figure 1 and Figure 16 , the handle and the weight plate 3 are detachably placed on the base 4.

[0058] In some embodiments, the weight adjustment mechanism is further provided with a weight half plate 28. Referring to Figure 4 、 Figure 7 、 Figure 8 , the weight half plate 28 is in a crescent-shaped structure. It is connected to the lower side of the shell 21 with the opening upward. The base 4 is provided with a groove 41 matched with the weight half plate 28. The two ends of the weight half plate 28 are respectively abutted on the shell 21 to limit the rotation. The weight of the weight half plate 28 can be set to be half of the weight of the weight plate 3.

[0059] The middle part of the weight half plate 28 is provided with a hook 281 upward. The bottom of the shell 21 is provided with an opening for the hook 281 to extend upward into the cavity. The outer circumference of the rotating disc 23 is provided with a plurality of flanges 233 arranged in the circumferential direction. The flanges 233 can be moved to the position directly below the hook 281 in the rotating action of the rotating disc 23. At this time, the dumbbell can be lifted together with the half plate through the cooperation of the flanges 233 and the hook 281.

[0060] In some preferred embodiments, the number of flanges 233 can be set to three. Referring to Figure 14, and in the case of adjusting the weight, the weight of the single handle side can be selected as one unit, one and a half units, two units, and the weight of the single handle side can be added by half unit successively.

[0061] In other preferred embodiments, the number of flanges 233 can also be four, as shown in Fig. 2. Figure 15 .

[0062] The weight adjusting mechanism further comprises a locking disc 26 for locking the rotating disc 23 when the dumbbell is lifted, so as to avoid the rotation of the rotating disc 23, and the locking disc 26 is arranged in the cavity. Figure 9 The locking disc 26 is arranged between the end plate 22 and the locking disc 26, and a top spring 261 is arranged between the locking disc 26 and the end plate 22, and the two ends of the top spring 261 are connected with the locking disc 26 and the end plate 22 respectively, and the top spring 261 is arranged in the vertical direction to provide a vertical elastic force to the locking disc 26.

[0063] The locking disc 26 is arranged around the outer periphery of the rotating disc 23, and the outer periphery wall of the rotating disc 23 is provided with ring teeth 232, and the inner side wall of the locking disc 26 is provided with a rotation stopping tooth 262, and the rotation stopping tooth 262 is located above the rotating disc 23, and when the locking disc 26 is not subjected to other external forces, the locking disc 26 is lowered under the elastic force of the top spring 261, so that the rotation stopping tooth 262 is engaged with the ring teeth 232 downward, and the locking disc 26 forms a rotation stopping effect on the rotating disc 23.

[0064] The bottom end of the locking disc 26 extends downward to be provided with a top rod, and the bottom of the shell 21 is provided with an opening for the top rod to extend downward, and the top block 42 is arranged at a corresponding position in the vertical direction on the base 4, and when the dumbbell is placed on the base 4, the top rod and the top block 42 form a direct abutting relationship, and the top block 42 pushes the top rod upward, so that the locking disc 26 moves upward, and the rotation stopping tooth 262 and the ring teeth 232 are disengaged, and the weight of the dumbbell can be adjusted arbitrarily when the dumbbell is placed on the base 4.

[0065] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

Claims

1. A dumbbell characterized in that, The handle includes a rotating drum (11) and a telescopic rod (12) penetrating in the rotating drum (11), the weight adjusting mechanism includes a gear disc (25) coaxially arranged with the rotating drum (11) and a rotating disc (23), the rotating disc (23) is fixedly connected with the rotating drum (11), a driving wheel (24) is arranged on the rotating disc (23) in the circumferential direction, a plurality of grooves are spirally arranged on the end face of the gear disc (25), the grooves are equally divided along the circumferential direction to form a plurality of first direction sub-tracks (251) and second direction sub-tracks (252) which are sequentially and spacedly connected, the first direction sub-tracks (251) are arranged along the circumferential direction of the gear disc (25), and the second direction sub-tracks (252) are arranged at an angle relative to the first direction sub-tracks (251) along the radial direction of the gear disc (25); a plurality of gear slots (121) are arranged on the telescopic rod (12) in the axial direction, and the driving wheel (24) is in meshing with the grooves and the gear slots (121).

2. A dumbbell according to claim 1, wherein A limiting wave bead (234) is fixedly arranged on the rotating disc (23), the limiting wave bead (234) includes a sleeve and a ball head, a spring is arranged in the sleeve for the ball head to abut against the opening of the sleeve, a plurality of gear slots are arranged on the end face of the gear disc (25) in the circumferential direction, and the ball head and the gear slots have a mutual matching trend in the rotation of the rotating disc (23).

3. The dumbbell of claim 1, wherein, The number of the driving wheels (24) is multiple, and the driving wheels (24) are arranged in a ring array around the axis of the rotating drum (11).

4. The dumbbell of claim 1, wherein, A counting assembly is further included, the counting assembly includes a counting ring (27), a planetary gear set (271), an inner gear ring and a counting gear (231), the counting gear (231) is coaxially arranged on the rotating disc (23), the counting ring (27) is coaxially sleeved on the outer periphery of the rotating disc (23), the planetary gear set (271) is arranged on the circumferential direction of the counting ring (27), the inner gear ring is fixedly arranged, the inner and outer sides of the planetary gear set (271) are in meshing with the counting gear (231) and the inner gear ring respectively, and the outer periphery of the counting ring (27) is provided with weight marks.

5. The dumbbell of claim 1, wherein, A weight half-piece (28) is further included, a hook (281) is arranged on the middle part of the weight half-piece (28) upward, a plurality of flanges (233) are arranged on the outer periphery of the rotating disc (23) in a ring array in the circumferential direction, and the flanges (233) are located directly below the hook (281) at a set rotating position of the rotating disc (23).

6. The dumbbell of claim 1, wherein, A locking disc (26) is further included, the locking disc (26) is arranged on the outer periphery of the rotating disc (23), the outer periphery of the rotating disc (23) is provided with ring teeth (232), the inner periphery of the locking disc (26) is provided with a rotation stopping tooth (262), and a top spring (261) is arranged on the locking disc (26) for driving the rotation stopping tooth (262) to mesh with the ring teeth (232).

7. A dumbbell according to claim 6, wherein The base (4) for placing the dumbbell is further provided with a top block (42) for abutting against the locking disc (26) in the vertical direction.

8. The dumbbell of claim 1, wherein, The weight plate (3) is in the form of a disc with a certain thickness, and a through hole (31) is arranged in the middle of the weight plate (3) for the telescopic rod (12) to pass through. A notch (32) is arranged on the outer periphery of the weight plate (3) for inserting the locking block. The locking block is connected with two adjacent weight plates (3).

9. A dumbbell according to claim 8, wherein The top and bottom of the weight plate (3) are respectively provided with the notch (32), and the inner wall of the notch (32) is recessed to form a slot for inserting the locking block. A latch is arranged on the slot, and the outer periphery of the locking block is provided with a semicircular opening for cooperating with the outer periphery of the latch. A clamping groove and a clamping plate are arranged on the locking block, and the clamping groove and the clamping plate are respectively connected with the adjacent clamping plate and the adjacent clamping groove.

10. The dumbbell of claim 1, wherein, The weight adjusting mechanism further comprises an end plate (22) and a shell (21). The end plate (22) and the shell (21) are fixedly connected and form a cavity for accommodating the rotating disc (23). The outer end surface of the end plate (22) is connected with the weight plate (3). The gear disc (25) is fixedly connected to the inner end surface of the end plate (22). The rotating drum (11) penetrates the shell (21) and the end plate (22). The outer periphery of the driving wheel (24) is provided with spherical teeth. The rotation direction plane of the driving wheel (24) coincides with the axis of the rotating drum (11). A through groove (111) is arranged on the outer wall of the rotating drum (11) for the driving wheel (24) to pass through. The weight adjusting mechanism further comprises a counting assembly. The counting assembly comprises a counting ring (27), a planetary gear set (271), an inner gear ring, and a counting gear (231). The counting gear (231) is coaxially arranged on the rotating disc (23). The counting ring (27) is coaxially sleeved on the outer periphery of the rotating disc (23). The planetary gear set (271) is arranged on the circumferential direction of the counting ring (27). The inner gear ring is arranged on the inner periphery of the shell (21). The inner and outer sides of the planetary gear set (271) are respectively engaged with the counting gear (231) and the inner gear ring. The outer periphery of the counting ring (27) is provided with weight marks. The outer wall of the shell (21) is provided with a window for observing the outer periphery of the counting ring (27). The weight adjusting mechanism further comprises a weight half plate (28). The weight half plate (28) is arranged on the lower side of the shell (21). The middle of the weight half plate (28) is provided with a lifting hook (281) upward. The bottom of the shell (21) is provided with an opening for the lifting hook (281) to pass through upward. The locking disc (26) is arranged on the outer periphery of the rotating disc (23). The locking disc (26) is provided with a top spring (261). The two ends of the top spring (261) are respectively connected with the locking disc (26) and the end plate (22).

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