Adjustable bell weight turnbells

Abstract

The application discloses a rotary bell with adjustable bell weight, comprising a bell rod mechanism and a bell with adjustable weight. The bell rod mechanism is rotatably connected with the bells at two ends. Push lock sliding keys are arranged at the two ends of the bell rod mechanism and are slidably connected with the bell rod mechanism. A lock tongue hole is arranged on the side of any bell facing the other bell. The push lock sliding key comprises a lock tongue. The bell comprises a counterweight seat and a counterweight block. The counterweight seat is provided with a plurality of counterweight compartments arranged in a circumferential direction along an axis. The counterweight compartments are used for accommodating the counterweight blocks. The counterweight compartments are provided with import and export ports for the counterweight blocks to enter and exit. The import and export ports are located at one end of the counterweight seat. The counterweight seat is provided with a pawl synchronous telescopic mechanism. The pawl synchronous telescopic mechanism comprises a plurality of synchronously sliding and telescopic pawls. The counterweight blocks are locked in the counterweight compartments through at least one pawl. The inertia of the bell rotation is utilized to increase the interest of the training with the rotary bell and expand the training function of the rotary bell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fitness equipment, and particularly to a rotating dumbbell with adjustable weight of dumbbell heads. BACKGROUND

[0002] A dumbbell is an auxiliary device for muscle training. The dumbbell includes a dumbbell rod and a dumbbell head. Generally, the dumbbell rod and the dumbbell head are fixedly connected, that is, the dumbbell head does not rotate relative to the dumbbell rod when the dumbbell is used for muscle training.

[0003] When the dumbbell is used for training, the training function is relatively single, and the dumbbell can only be used simply. SUMMARY

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a rotating dumbbell with adjustable weight of dumbbell heads and rich training functions.

[0005] In a first aspect, the rotating dumbbell with adjustable weight of dumbbell heads includes a dumbbell rod mechanism and a dumbbell head with adjustable weight. The two ends of the dumbbell rod mechanism are respectively rotatably connected with the dumbbell heads. The two ends of the dumbbell rod mechanism are respectively provided with push-lock sliding keys. The push-lock sliding keys are slidably connected with the dumbbell rod mechanism. One side of each dumbbell head facing the other dumbbell head is provided with a lock tongue hole. The push-lock sliding key includes a lock tongue.

[0006] The push-lock sliding key slides relative to the dumbbell rod mechanism, so that the lock tongue enters or exits the lock tongue hole.

[0007] The lock tongue enters the lock tongue hole to prevent the dumbbell head from rotating relative to the dumbbell rod mechanism.

[0008] The dumbbell head includes a counterweight seat and a counterweight block. The counterweight seat is provided with a plurality of counterweight compartments arranged circumferentially along the axis. The counterweight compartments are used to accommodate the counterweight blocks. The counterweight compartments are provided with import and export ports for the counterweight blocks to enter and exit. The import and export ports are located at one end of the counterweight seat. The counterweight seat is provided with a claw synchronous telescopic mechanism. The claw synchronous telescopic mechanism includes a plurality of synchronously sliding and telescopic claws. The counterweight block is locked in the counterweight compartment by at least one claw.

[0009] According to the technical solution provided in the embodiments of this application, by sliding the push lock slide key, the lock tongue enters the lock tongue hole, and the lock tongue can stop the bell head, preventing the bell head from rotating relative to the bell bar mechanism. The bell can then be used as a regular dumbbell. By sliding the push lock slide key, the lock tongue disengages from the lock tongue hole, and the lock tongue no longer stops the bell head. The bell head can then rotate relative to the bell bar mechanism. The bell can then be used as an ab wheel. Alternatively, when using the weight of the bell itself for muscle training, the bell head can be turned by flicking it. Or, when lifting the bell, the inertia of the bell head can be used to make the bell head rotate. The inertia of the rotating bell head increases the fun of using the bell for training and expands the training function of the bell. Attached Figure Description

[0010] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0011] Figure 1 This is a schematic diagram of the structure of a rotating bell with adjustable bell head weight according to an embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of the bell rod mechanism of the adjustable bell head weight rotating bell and the positioning plate according to an embodiment of the present invention.

[0013] Figure 3 For along Figure 2 Sectional view of line AA in the middle;

[0014] Figure 4 This is a front view of the handle of the adjustable bell head weight rotating bell according to an embodiment of the present invention;

[0015] Figure 5 A left view of the handle of a rotating bell with adjustable bell head weight according to an embodiment of the present invention;

[0016] Figure 6 A perspective view of the handle of a rotating bell with adjustable bell head weight according to an embodiment of the present invention;

[0017] Figure 7 For along Figure 4 Sectional view of the middle BB line;

[0018] Figure 8 This is a front view of the main shaft of the bell with adjustable bell head weight according to an embodiment of the present invention;

[0019] Figure 9 A perspective view of the main shaft of the bell with adjustable bell head weight according to an embodiment of the present invention;

[0020] Figure 10 This is a schematic diagram of the positioning plate of the adjustable bell head weight rotating bell according to an embodiment of the present invention;

[0021] Figure 11 Front view of push lock slide key of adjustable bell weight rotary bell for an embodiment of the invention;

[0022] Figure 12 Top view of push lock slide key of adjustable bell weight rotary bell for an embodiment of the invention;

[0023] Figure 13 Right view of push lock slide key of adjustable bell weight rotary bell for an embodiment of the invention;

[0024] Figure 14 Perspective view of push lock slide key of adjustable bell weight rotary bell for an embodiment of the invention;

[0025] Figure 15 Front view of bell head of adjustable bell weight rotary bell for an embodiment of the invention;

[0026] Figure 16 Right view of bell head of adjustable bell weight rotary bell for an embodiment of the invention;

[0027] Figure 17 Perspective view of bell head of adjustable bell weight rotary bell for an embodiment of the invention;

[0028] Figure 18 Sectional view along Figure 15 line A-A;

[0029] Figure 19 Sectional view along Figure 16 line B-B;

[0030] Figure 20 Structural schematic of push column of adjustable bell weight rotary bell for an embodiment of the invention;

[0031] Figure 21 Front view of counterweight of adjustable bell weight rotary bell for an embodiment of the invention;

[0032] Figure 22 Right view of counterweight of adjustable bell weight rotary bell for an embodiment of the invention;

[0033] Figure 23 Structural schematic of pawl of adjustable bell weight rotary bell for an embodiment of the invention;

[0034] Figure 24 Structural schematic of base cover, base and top cover fitting of adjustable bell weight rotary bell for an embodiment of the invention;

[0035] Figure 25Figure 1 is an exploded view of a base cover of a weight-adjustable rotary bell of an embodiment of the present application;

[0036] Figure 26 Figure 2 is a schematic view of the base and the top cover of the weight-adjustable rotary bell of an embodiment of the present application;

[0037] Figure 27 Figure 3 is an exploded view of the base and the top cover of the weight-adjustable rotary bell of an embodiment of the present application;

[0038] Figure 28 Figure 4 is a schematic view of the top cover of the weight-adjustable rotary bell of an embodiment of the present application;

[0039] Figure 29 Figure 5 is a schematic view of the base of the weight-adjustable rotary bell of an embodiment of the present application;

[0040] Figure 30 Figure 6 is a schematic view of the base cover of the weight-adjustable rotary bell of an embodiment of the present application. DETAILED DESCRIPTION

[0041] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only the parts of the drawings that are pertinent to the present application are shown.

[0042] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0043] Reference should be made to Figure 1 , 3, 17 and 18, the adjustable bell weight rotating bell of the present application comprises a bell bar mechanism 100 and an adjustable weight bell 200, the two ends of the bell bar mechanism 100 are respectively rotationally connected with the bell 200, the two ends of the bell bar mechanism 100 are respectively provided with a push-lock sliding key 300, the push-lock sliding key 300 is slidingly connected with the bell bar mechanism 100, one side of any bell 200 facing the other bell 200 is provided with a lock tongue hole 210, the push-lock sliding key 300 comprises a lock tongue 321; the push-lock sliding key 300 slides relative to the bell bar mechanism 100 to make the lock tongue 321 enter or leave the lock tongue hole 210; the lock tongue 321 enters the lock tongue hole 210 to prevent the bell 200 from rotating relative to the bell bar mechanism 100, the bell comprises a counterweight seat 240 and a counterweight block 600, the counterweight seat 240 is provided with a plurality of counterweight compartments 241 arranged circumferentially along the axis thereof, the counterweight compartment 241 is used for accommodating the counterweight block 600, the counterweight compartment 241 is provided with an import and export port 2415 for the counterweight block 600 to enter and exit, the import and export port 2415 is located at one end of the counterweight seat 240, the counterweight seat 240 is provided with a pawl synchronous telescopic mechanism, the pawl synchronous telescopic mechanism comprises a plurality of synchronously sliding and telescopic pawls 510, the counterweight block 600 is locked in the counterweight compartment 241 at least through one pawl 510.

[0044] In the embodiment of the present application, the bell bar mechanism is held by the user, and the bell is the weight concentration part of the rotating bell. The two ends of the bell bar mechanism are respectively rotationally connected with the bell, so that the user can keep balance when holding the bell bar mechanism, and the holding difficulty is reduced. The bell bar mechanism is slidingly connected with the push-lock sliding key, which can be one push-lock sliding key or a plurality of push-lock sliding keys when cooperating with one bell; when a plurality of push-lock sliding keys are provided, the plurality of push-lock sliding keys can be synchronous or asynchronous. The push-lock sliding key slides relative to the bell bar mechanism to drive the lock tongue to slide, and the push-lock sliding key can directly drive the lock tongue to move, which can be but is not limited to that the lock tongue is fixedly connected with the push-lock sliding key or is integrally formed; the push-lock sliding key can also indirectly drive the lock tongue to move, which can be but is not limited to that the push-lock sliding key drives the lock tongue to move through a transmission mechanism.

[0045] The push-lock sliding key comprises a lock tongue, and the bell head is provided with a lock tongue hole. When the push-lock sliding key slides relative to the bell rod mechanism, the lock tongue is driven to extend out, so that the lock tongue is inserted into the lock tongue hole, and the lock tongue can stop the bell head from rotating relative to the bell rod mechanism. When the rotating bell is used, the bell head cannot rotate relative to the bell rod mechanism, and the rotating bell serves as a common dumbbell. The push-lock sliding key slides relative to the bell rod mechanism, the lock tongue is driven to retract, so that the lock tongue is separated from the lock tongue hole, and the bell head can rotate relative to the bell rod mechanism. The user can use the rotating bell as an abdominal wheel. The user holds the bell rod mechanism, places the bell head on the ground, and rolls the bell head on the ground to perform muscle training. When the muscle training is performed by using the gravity of the rotating bell itself, the bell head can be driven to rotate, or when the rotating bell is lifted, the inertia of the bell head is utilized to drive the bell head to rotate, so that the inertia of the rotating bell head is utilized to increase the interest of the muscle training by using the rotating bell, and the training function of the rotating bell is expanded.

[0046] The counterweight seat is provided with a plurality of counterweight compartments arranged circumferentially along the axis thereof. The weight of the bell head is adjusted by placing the counterweight blocks in the counterweight compartments. The counterweight blocks enter or separate from the counterweight compartments through the inlet and outlet. The user can place different numbers of counterweight blocks on the counterweight seat according to actual conditions. The counterweight seat is provided with a claw synchronous extension and retraction mechanism. The claw synchronous extension and retraction mechanism comprises a plurality of claws that synchronously slide and extend and retract. The claws are in sliding connection with the counterweight seat. When the counterweight blocks are placed in the counterweight compartments, the claws extend into the counterweight compartments and lock the counterweight blocks to prevent the counterweight blocks from separating from the counterweight compartments, thereby ensuring safety. The plurality of claws synchronously extend and retract. After the plurality of counterweight blocks are placed in the plurality of counterweight compartments, the claws synchronously extend to lock the counterweight blocks. When the counterweight blocks in the counterweight compartments need to be taken out, the claws synchronously retract into the counterweight seat, and the counterweight blocks in the counterweight compartments can be taken out. The operation is simple. One counterweight compartment can lock one counterweight block, but is not limited to this.

[0047] Reference Figure 1 Further, the bell rod mechanism 100 comprises a main shaft 110 and a handle 120. The main shaft 110 penetrates through the handle 120 and is in rotational connection with the handle 120. The bell head 200 is detachably fixedly connected with the end of the main shaft 110.

[0048] In the embodiment of the present application, the main shaft is detachably fixedly connected with the bell head. The bell head can be detachably fixedly connected with the main shaft through the first bolt, but is not limited to this. This facilitates the packaging and transportation of the rotating bell. When the bell head is damaged, the bell head can be replaced, thereby reducing the use cost. The bell rod mechanism comprises a main shaft and a handle. The main shaft penetrates through the handle and is in rotational connection with the handle. The main shaft is partially located inside the handle, thereby effectively protecting the main shaft. The main shaft is in rotational connection with the handle, and the bell head is detachably fixedly connected with the main shaft. The bell head rotates relative to the handle. When the rotating bell is used, the handle can be held, and the handle does not rotate relative to the hand of the user, thereby ensuring the stability of the rotational connection.

[0049] ReferenceFigures 1-3 Further, a plurality of bearings 130 are arranged between the main shaft 110 and the handle 120.

[0050] In the embodiment of the present application, the bearings can keep a distance between the main shaft and the handle, avoiding unnecessary friction between the main shaft and the handle when the main shaft rotates, and the bearings have small frictional damping and simple structure, ensuring the stability of the rotational connection between the main shaft and the handle. The number of bearings can be two, which takes into account the manufacturing cost and stability.

[0051] Further, the main shaft 110 is arranged as a stepped shaft, the main shaft 110 is provided with a first annular protrusion 111 and shaft heads 112 located on both sides of the first annular protrusion 111, an axial shoulder 113 is arranged between the first annular protrusion 111 and the shaft heads 112, the bearings 130 are sleeved on the shaft heads 112, the axial shoulder 113 is used to stop the bearings 130, the shaft heads 112 are sleeved with a retainer ring 114, one end of the retainer ring 114 abuts against the inner ring 131 of the bearing, and the other end of the retainer ring 114 abuts against the bell head 200.

[0052] In the embodiment of the present application, the main shaft is provided with a first annular protrusion, axial shoulders are formed on both sides of the first annular protrusion, the axial shoulders are used to stop the bearings, align the bearings, and support the bearings in the axial direction. The first annular protrusion abuts against the inner ring of the bearing, avoiding unnecessary wear between the bearing and the first annular protrusion when the main shaft rotates relative to the handle. The shaft head is sleeved with a retainer ring, one end of the retainer ring abuts against the inner ring of the bearing, and the other end of the retainer ring abuts against the bell head. When the bell head is fixed to the main shaft, the retainer ring can keep a distance between the first annular protrusion and the retainer ring. Of course, a second annular protrusion 127 can be arranged on the side of the handle opposite to the first annular protrusion, the second annular protrusion 127 abuts against the outer ring 132 of the bearing, and through the cooperation of the bearings, the first annular protrusion and the second annular protrusion, the handle can be prevented from moving in the radial direction relative to the main shaft. In combination with the retainer ring, a certain gap is ensured between the handle and the bell head, avoiding unnecessary friction between the handle and the bell head when the bell is rotated, and improving the service life of the bell.

[0053] Reference Figures 4-7Further, the push-lock sliding key 300 is located between the blocking ring 114 and the handle 120, and the push-lock sliding key 300 comprises a sliding seat 310, the sliding seat 310 is provided with at least one push-lock mechanism 320, the push-lock mechanism 320 comprises a lock tongue 321 and a first stop portion 322, the lock tongue 321 is located at one end of the sliding seat 310 opposite to the bell head 200, the lock tongue 321 extends from the end of the sliding seat 310, the first stop portion 322 is located at one side of the sliding seat 310 facing the handle 120, the first stop portion 322 extends from the side of the sliding seat 310, the first stop portion 322 is connected with the sliding seat 310 through an elastic connecting portion 323, and the handle 120 is provided with a first through hole 121 for the first stop portion 322 to extend out.

[0054] In the embodiment of the present application, the push-lock sliding key is located between the blocking ring and the handle, the push-lock sliding key comprises a sliding seat, the sliding seat can be but is not limited to being provided in a ring shape, and the sliding seat is sleeved on the blocking ring, and the bell head can stop the sliding seat, thereby ensuring the stability of the sliding connection between the sliding seat and the bell stem mechanism.

[0055] The push-lock mechanism comprises a lock tongue and a first stop portion, the lock tongue is located at one end of the sliding seat opposite to the bell head, by pushing the push-lock sliding key to slide relative to the bell stem mechanism, the lock tongue will extend out from between the handle and the blocking ring and extend into the lock tongue hole. The first stop portion extends from one side of the sliding seat facing the handle, the first stop portion is connected with the sliding seat through an elastic connecting portion, the position of the first stop portion can be changed by pressing the first stop portion, and the first stop portion will reset under the elastic force of the elastic connecting portion. The handle is provided with a first through hole, the first stop portion extends out of the first through hole, so that the user can press the first stop portion to push the push-lock sliding key to move.

[0056] Further, the first through hole 121 is provided with a stop protrusion 123, the stop protrusion 123 divides the first through hole 121 into a first sliding key compartment 124 and a second sliding key compartment 125, and the stop protrusion 123 is used for stopping the first stop portion 322.

[0057] In the embodiment of the present application, the first through hole is provided with a stop protrusion, the stop protrusion divides the first through hole into a first sliding key compartment and a second sliding key compartment. When the first stop portion is located in the first sliding key compartment, the stop protrusion can stop the first stop portion, preventing the first stop portion from leaving the first sliding key compartment, thereby avoiding the push-lock sliding key from sliding relative to the bell stem mechanism. Similarly, when the first stop portion is located in the second sliding key compartment, the stop protrusion can stop the first stop portion, preventing the first stop portion from leaving the second sliding key compartment, thereby avoiding the push-lock sliding key from sliding relative to the bell stem mechanism. Of course, when it is necessary to adjust the position of the first stop portion, the first stop portion can be pressed to make the elastic connecting portion deform, so that the first stop portion is separated from the stop protrusion, thereby sliding the push-lock sliding key to switch whether the first stop portion is located in the first sliding key compartment or the second sliding key compartment. Figures 2-4When the first stop portion is located in the first sliding key groove, the lock tongue extends into the lock tongue hole, and the stop protrusion can prevent the first stop portion from being separated from the first sliding key groove, that is, prevent the lock tongue from being separated from the lock tongue hole.

[0058] Further, the first stop portion 322 is provided with a pressing protrusion 326 on the side away from the sliding seat 310, and the first through hole 121 is provided with two opposite stop protrusions 123, and a gap 126 is arranged between the two stop protrusions 123 for the pressing protrusion 326 to pass through.

[0059] In the embodiment of the application, the first stop portion is provided with a pressing protrusion, and when it is necessary to change the position of the first stop portion, the pressing protrusion can be pressed to drive the elastic connecting portion to deform, so that the first stop portion is separated from the stop of the stop protrusion, thereby enabling the sliding bolt to slide and enabling the lock tongue to be separated from or enter the lock tongue hole. The pressing protrusion can facilitate the user to press the first stop portion, thereby reducing the pressing difficulty. The first through hole is provided with two opposite stop protrusions, and a gap is arranged between the two stop protrusions for the pressing protrusion to pass through when it is necessary to change the position of the first stop portion, so that the pressing protrusion can pass through the gap between the two stop protrusions, thereby reducing the operation difficulty and avoiding the elastic connecting portion from deforming too much, and the reliability of the sliding bolt is ensured.

[0060] Reference Figures 8-10 Further, the bell head 200 is detachably fixedly connected with the positioning plate 220, the positioning plate 220 is provided with a second through hole 221, the shaft head 112 is partially located in the second through hole 221, and the application further comprises a first bolt 222, the first bolt 222 is screwed with the end of the shaft head 112, the first bolt 222 is sleeved with a blocking piece 223, the diameter of the blocking piece 223 is greater than the hole diameter of the second through hole 221, and the blocking piece 223 is located on the side of the positioning plate 220 away from the blocking ring 114.

[0061] In the embodiment of the application, the positioning plate is detachably fixedly connected with the shaft head through the first bolt, and the structure is simple and convenient to disassemble and assemble. The positioning plate is provided with a second through hole, and the shaft head is partially located in the second through hole. When the first bolt is fixed, the blocking piece is worn on the first bolt, and then the first bolt is screwed on the shaft head. Since the blocking piece is stopped, the head of the first bolt cannot pass through the second through hole. When the first bolt is tightened, the blocking ring tightly abuts against the positioning plate. At this time, there is a gap between the blocking piece and the shaft head, so that the reliability of the first bolt in fixing the positioning plate and the shaft head can be ensured, and the positioning plate and the shaft head are prevented from being loosened.

[0062] Further, the bell head 200 is sleeved with a buffer ring 230.

[0063] In the embodiment of the present application, the buffer ring is sleeved with the bell head, when the rotating bell is used as an abdominal wheel, the buffer ring can increase the friction with the ground, so that the bell head can smoothly roll on the ground. At the same time, the buffer ring can play a buffering role to avoid rigid contact between the bell head and the ground. But not limited to, the mounting groove is arranged on the circumference of the bell head, and the buffer ring is mounted in the mounting groove, so as to ensure the stability of the sleeve connection between the buffer ring and the bell head. But not limited to, a plurality of anti-skid protrusions are arranged on the outer side of the buffer ring, further increasing the friction between the buffer ring and the ground.

[0064] Reference Figures 11-14 Further, the push-lock sliding key 300 is provided with a sliding protrusion 312, and the bell rod mechanism 100 is provided with a sliding groove 122 arranged along the length direction of the bell rod mechanism, and the sliding protrusion 312 is in sliding cooperation with the sliding groove 122.

[0065] In the embodiment of the present application, the sliding groove is arranged along the length direction of the bell rod mechanism, and the sliding protrusion is in sliding cooperation with the sliding groove, that is, the push-lock sliding key can only slide along the length direction of the bell rod mechanism, so as to avoid that when the lock tongue enters the lock tongue hole and the bell head is locked, the push-lock sliding key rotates together with the bell head during muscle training using the rotating bell. But not limited to, a plurality of sliding protrusions are arranged on the outer side of the sliding seat, and the plurality of sliding protrusions are mirror-symmetrically distributed on the sliding seat, so that the force on the sliding seat is more balanced.

[0066] Further, the sliding seat 310 is provided with two push-lock mechanisms 320, and the two push-lock mechanisms 320 are mirror-symmetrically distributed on the sliding seat 310.

[0067] In the embodiment of the present application, the sliding seat is provided with two push-lock mechanisms, when the push-lock sliding key needs to be slid and the two mirror-symmetric first stoppers are pressed at the same time, the sliding seat can be stressed on both sides when the elastic connecting part is deformed, so that the force is more balanced, the pressing force on the first stopper is from the outside of the sliding seat to the inside of the sliding seat, and the first stopper moves towards the inside of the sliding seat. Compared with the single-side stress on the sliding seat, the sliding seat is not easy to deviate from the position, and unnecessary friction between the sliding seat and the bell rod during the sliding process of the push-lock sliding key can be reduced.

[0068] Further, the lock tongue 321 extends outward to form a reinforcing portion 324 on the side close to the sliding seat 310.

[0069] In the embodiment of the present application, when the lock tongue extends into the lock tongue hole and the lock tongue stops the rotation of the bell head, the bell head will apply a pushing force to the lock tongue. The lock tongue extends outward on the side close to the sliding seat to form a reinforcing portion, which can improve the strength of the lock tongue and the service life of the push-lock sliding key.

[0070] Further, the corner of the side of the lock tongue 321 away from the sliding seat 310 is a rounded corner 325.

[0071] In the embodiment of the present application, the lock tongue hole is arranged on the bell head, and the lock tongue can be inserted into the lock tongue hole only when the sliding push lock key is slid and the lock tongue is inserted into the lock tongue hole after the bell head is rotated to face the lock tongue hole. The corner of the side of the lock tongue away from the sliding seat is arranged as a round corner, and the round corner facilitates the insertion of the lock tongue into the lock tongue hole.

[0072] Further, the sliding seat 310 is provided with a groove 311, and the first stop portion 322 and the elastic connecting portion 323 are arranged in the groove 311.

[0073] In the embodiment of the present application, the first stop portion is arranged in the groove, the first stop portion is arranged outside the groove, so that the first stop portion can extend from the side of the sliding seat and be matched with the stop protrusion. The elastic connecting portion is arranged in the groove, so as to avoid the leakage of the elastic connecting portion and the unnecessary friction between the elastic connecting portion and other structures during the sliding of the push lock key.

[0074] Reference Figures 15-23 Further, the claw synchronous extension and retraction mechanism comprises a pressing column 410 slidably connected with the counterweight seat 240, one end of the pressing column 410 is a pressing end 411, the counterweight seat 240 is provided with a sliding cavity 242 for the sliding of the pressing column 410, one end of the sliding cavity 242 is provided with a first opening 2421 for the exposure of the pressing end 411, the sliding cavity 242 is provided with a first spring 412, the first spring 412 provides elastic force for the exposure of the pressing end 411 from the first opening 2421, the side of the pressing column 410 is provided with a first annular matching surface 4131 and a second annular matching surface 4141, the diameter of the first annular matching surface 4131 is smaller than the diameter of the second annular matching surface 4141, the counterweight seat 240 is provided with a plurality of counterweight compartments 241, the counterweight seat 240 is slidably connected with a plurality of claws 510, the claws 510 extend into the counterweight compartments 241, and one end of the claw 510 close to the pressing column 410 moves along the side of the pressing column 410.

[0075] In the embodiment of the present application, the pressing column is slidably connected with the counterweight seat, and the sliding direction of the pressing column relative to the counterweight seat is perpendicular to the end surface of the counterweight seat, but is not limited to this. The counterweight seat is provided with a sliding cavity for the sliding of the pressing column, and the sliding cavity can limit the sliding range of the pressing column, so as to avoid the disengagement of the pressing column from the counterweight seat. Figure 18, the one end of the pressing column is a pressing end, the pressing end is exposed outside the counterweight seat from the first opening, the pressing end can be but is not limited to located on the side of the bell head 200 away from the bell bar 100, so as to facilitate the user to press, and meanwhile, the pressing end is avoided from interfering the user to hold the bell bar 100. The first spring is arranged in the sliding cavity, the first spring provides elastic force for the pressing end to expose the first opening, when the user presses the pressing column and the pressing end is withdrawn from the first opening, the first spring will be deformed to store energy. When the user releases the pressing column, the first spring releases the stored energy, so that the pressing end is extended from the first opening, facilitating the user to press, and meanwhile, when the pressing end is not pressed by external force, the first spring makes the second annular matching surface face the pawl, so that the pawl keeps the position of extending into the counterweight chamber, the pawl clamps the counterweight block in the counterweight chamber, avoiding that the pawl is withdrawn to cause the counterweight block to be separated from the counterweight chamber in the process of using the dumbbell for muscle training, and ensuring the safety of the muscle training.

[0076] The side surface of the pressing column is provided with the first annular matching surface and the second annular matching surface, the diameter of the first annular matching surface is smaller than that of the second annular matching surface, and the one end of the pawl close to the pressing column moves along the side surface of the pressing column. That is, by pressing the pressing column, the position of the pressing column facing the pawl can be changed relative to the counterweight seat. The pawl changes the distance between the center axis of the pressing column and the pawl along with the movement of the pressing column. When the pawl faces the first annular matching surface, the pawl is located close to the center axis of the pressing column, the one end of the pawl away from the pressing column is separated from the counterweight chamber, the pawl does not clamp the counterweight block in the counterweight chamber, and the counterweight block can freely enter and exit the counterweight chamber; when the pawl faces the second annular matching surface, the pawl is located away from the center axis of the pressing column, the one end of the pawl away from the pressing column extends into the counterweight chamber, and the pawl clamps the counterweight block in the counterweight chamber, so that the counterweight block cannot be separated from the counterweight chamber. By pressing the pressing column, the one end of the pawl close to the pressing column moves along the side surface of the pressing column, so that multiple pawls are synchronously extended and retracted, and the disassembly and assembly time of the counterweight block is shortened.

[0077] Further, the one end of the sliding cavity 242 close to the first opening 2421 is provided with a second stop portion 2422, the side surface of the third annular protrusion 413 is provided with a first annular matching surface 4131, the second stop portion 2422 stops the third annular protrusion 413, and the one end of the sliding cavity 242 away from the first opening 2421 is provided with a third stop portion 2423, and the third stop portion 2423 stops the pressing column 410.

[0078] In the embodiment of the present application, the first annular matching surface is formed by arranging the third annular protrusion, and the second stop portion can stop the third annular protrusion, preventing the pressing column from separating from the sliding cavity on the side where the first opening is arranged. The third stop portion stops the pressing column, preventing the pressing column from separating from the sliding cavity on the side where the first opening is not arranged. The third stop portion can stop the end of the pressing column away from the first opening, but is not limited to this. Meanwhile, the third stop portion stops the pressing column, limiting the position of the pressing end retracted into the sliding cavity, avoiding excessive retraction of the pressing end into the sliding cavity, which can cause the pressing end to be unable to extend. Meanwhile, the first spring can also be prevented from being deformed excessively, prolonging the service life of the first spring.

[0079] Further, the first opening 2421 extends to the inside of the first opening 2421 on the side away from the sliding cavity 242 to form a second stop portion 2422.

[0080] In the embodiment of the present application, the first opening extends to the inside of the first opening on the side away from the sliding cavity, so that the side of the second stop portion away from the sliding cavity can be attached to the outer surface of the counterweight seat, avoiding the formation of a dead angle between the second stop portion and the counterweight seat that cannot be cleaned, and also avoiding the fingers of the user from being pinched when the user presses the pressing end.

[0081] Further, the inner wall of the sliding cavity 242 is bent to the inside of the sliding cavity 242 to form a third stop portion 2423.

[0082] In the embodiment of the present application, the inner wall of the sliding cavity is bent to the inside of the sliding cavity to form the third stop portion, instead of directly arranging the third stop portion on the inner wall of the sliding cavity, which can reduce the weight of the counterweight seat and reduce production costs.

[0083] Further, the pressing column 410 is provided with a fourth annular protrusion 414, the second annular matching surface 4141 is the side surface of the fourth annular protrusion 414, the pressing column 410 is sleeved with a first spring 412, the first spring 412 is located on the side of the fourth annular protrusion 414 away from the first opening 2421, the inner wall of the sliding cavity 242 is bent to the inside of the sliding cavity 242 to form a fourth stop portion 2424, and the first spring 412 is located between the fourth stop portion 2424 and the fourth annular protrusion 414.

[0084] In the embodiment of the present application, the second annular matching surface is formed by arranging the fourth annular protrusion, and the fourth annular protrusion can support the first spring sleeved on the pressing column. The first spring is sleeved on the pressing column, the pressing column can support the first spring, limit the deformation direction of the first spring, and improve the reliability of the first spring. The fourth stopper is formed by bending the inner wall of the sliding cavity towards the inside of the sliding cavity, instead of arranging the fourth stopper directly on the inner wall of the sliding cavity, which can reduce the weight of the counterweight seat and the production cost. The fourth stopper is located on the side of the fourth annular protrusion away from the first opening, the first spring is located between the fourth stopper and the fourth annular protrusion, and the fourth stopper can support the first spring. The fourth stopper supports one end of the first spring, and the fourth annular protrusion supports the other end of the first spring, which ensures the stability of the deformation of the first spring.

[0085] Further, a circular truncated cone transition surface 415 is arranged between the first annular matching surface 4131 and the second annular matching surface 4141.

[0086] In the embodiment of the present application, the circular truncated cone transition surface is arranged between the first annular matching surface and the second annular matching surface. When the pressing column slides relative to the counterweight seat, the end of the pawl close to the pressing column moves along the side surface of the pressing column. The pawl and the pressing column can be provided with a ball therebetween, and the ball rolls along the side surface of the pressing column to realize the movement of the end close to the pressing column along the side surface of the pressing column. By arranging the circular truncated cone transition surface, the movement of the end of the pressing column along the side surface of the pressing column is smoother when the pressing column slides relative to the counterweight seat, and the movement jamming is avoided. The first annular matching surface and the circular truncated cone transition surface can be provided with a circular arc surface at the connection therebetween, so that the movement of the pawl from directly opposite the first annular matching surface to directly opposite the circular truncated cone transition surface or from directly opposite the circular truncated cone transition surface to directly opposite the first annular matching surface is smoother. The second annular matching surface and the circular truncated cone transition surface can be provided with a circular arc surface at the connection therebetween, so that the movement of the pawl from directly opposite the second annular matching surface to directly opposite the circular truncated cone transition surface or from directly opposite the circular truncated cone transition surface to directly opposite the second annular matching surface is smoother.

[0087] Further, one end of the counterweight seat 240 is provided with a groove 243 in communication with the first opening 2421, and the pressing end 411 is located in the groove 243.

[0088] In the embodiment of the present application, the pressing end is located in the groove, and the user needs to put the fingers into the groove to press the pressing end when pressing. When the pressing end is pushed out of the first opening by the elastic force of the first spring, the pressing end does not expose the groove. In the process of using the dumbbell for muscle training, the counterweight seat can protect the pressing column from collision with other objects, and the reliability of the pawl synchronous extension and retraction mechanism is ensured.

[0089] Further, the groove 243 is a hemispherical groove.

[0090] In the embodiment of the present application, when the user presses the pressing end with fingers, the inner wall of the hemispherical groove will not have sharp parts, which improves the pressing feeling of the user.

[0091] Further, the plurality of claws 510 move in the same plane perpendicular to the movement direction of the pressing column 410.

[0092] In the embodiment of the present application, the plurality of claws move in the same plane perpendicular to the movement direction of the pressing column, when the pressing column is pressed and the end of the claw close to the pressing column moves along the side surface of the pressing column, it is ensured that the plurality of claws simultaneously face the first annular matching surface or simultaneously face the first annular matching surface, which ensures the synchronization of the extension and retraction movement of the plurality of claws.

[0093] Further, the pressing column 410 is provided with chamfers 416 at both ends.

[0094] In the embodiment of the present application, the end of the pressing column away from the first opening is chamfered, which facilitates the insertion of the pressing column into the sliding cavity and reduces the assembly difficulty. The end of the pressing column close to the first opening is chamfered, which can but not limited to be rounded, which avoids the pressing column from clicking the fingers of the user when the user presses the pressing column, and improves the user experience.

[0095] Reference Figures 15-23 Further, the end of the claw 510 extending into the counterweight bin 241 from the side surface of the counterweight bin 241 is a claw lock tongue 511, the bottom of the counterweight bin 241 is provided with a first positioning protrusion 2411, the claw lock tongue 511 extends into the counterweight bin 241 to lock the counterweight block 600 in the counterweight bin 241; the claw lock tongue 511 is separated from the counterweight bin 241 to release the counterweight block 600 in the counterweight bin 241.

[0096] In the embodiment of the present application, the claw is in sliding connection with the counterweight seat, one end of the claw extending into the counterweight bin is a claw lock tongue, when the counterweight bin is placed with the counterweight block, the claw lock tongue extends into the counterweight bin, and the claw lock tongue extends into the clamping groove on the side of the counterweight block. The top of the counterweight bin is provided with an inlet and outlet, and the counterweight block can only enter and exit the counterweight bin through the inlet and outlet. The counterweight block can be prevented from being separated from the counterweight bin by the stop of the claw lock tongue. The bottom of the counterweight bin is provided with a first positioning protrusion, and the counterweight block is provided with a positioning groove matched with the first positioning protrusion. After the counterweight block is placed in the counterweight bin, the first positioning protrusion is inserted into the positioning groove. Through the cooperation of the first positioning protrusion and the positioning groove, the shaking range of the counterweight block in the counterweight bin can be reduced, so that the counterweight block locking mechanism locks the counterweight block more stably. The claw is in sliding connection with the counterweight seat, and a sliding groove for the sliding of the claw can be arranged on the counterweight seat to limit the sliding direction of the claw. When the counterweight block in the counterweight bin needs to be taken out, the claw slides relative to the counterweight seat, the claw is withdrawn from the counterweight seat, the claw lock tongue is separated from the counterweight bin, the claw lock tongue is separated from the clamping groove on the side of the counterweight block, and the claw lock tongue no longer stops the counterweight block, so that the counterweight block can be smoothly taken out of the counterweight bin. By sliding the claw relative to the counterweight seat, it is adjusted whether the claw lock tongue extends into the counterweight bin to take out and place the counterweight block, so as to adjust the weight of the bell, and the operation is simplified.

[0097] Further, the end of the claw 510 close to the pressing column 410 moves along the side surface of the pressing column 410, when the end of the claw 510 close to the pressing column 410 moves to opposite the first annular matching surface 4131, the claw lock tongue 511 is separated from the counterweight bin 241; when the end of the claw 510 close to the pressing column 410 moves to opposite the second annular matching surface 4141, the claw lock tongue 511 extends into the counterweight bin 241.

[0098] In the embodiment of the present application, the pressing column is in sliding connection with the counterweight seat, and the sliding direction of the pressing column relative to the counterweight seat can be perpendicular to the end surface of the counterweight seat.

[0099] Reference Figure 19 Further, the counterweight seat 240 is provided with a limiting block 250, the claw 510 is provided with a limiting hole 512, the limiting block 250 passes through the limiting hole 512, and the limiting hole 512 is provided with a second spring 513, and the second spring 513 is located on the side of the limiting block 250 away from the counterweight bin 241.

[0100] In the embodiment of the present application, the limiting block passes through the limiting hole, through the sliding cooperation of the limiting block and the limiting hole, and the cooperation of the sliding groove on the counterweight seat, the sliding direction and range of the claw can be limited. At the same time, the second spring is arranged in the limiting hole, and the elastic force of the second spring makes the end of the claw close to the pressing column move along the side surface of the pressing column. The limiting block can also support the second spring.

[0101] Further, the limiting hole 512 is provided with a second positioning protrusion 514, and the second positioning protrusion 514 extends into the second spring 513.

[0102] In the embodiment of the application, the limiting hole is provided with a second positioning protrusion away from one side of the counterweight bin, the second positioning protrusion extends into the second spring, the second positioning protrusion can support the second spring, avoid the second spring from being deformed excessively, and prolong the service life of the second spring.

[0103] Further, the pressing column 410 is provided with a rolling element 520 between the pressing column 410 and the claw 510.

[0104] In the embodiment of the application, when the pressing column slides relative to the counterweight seat, the rolling element rolls between the pressing column and the claw, so that the end of the claw close to the pressing column can move along the side surface of the pressing column, and the friction between the claw and the pressing column is reduced.

[0105] Reference Figure 21 And 22 Further, the counterweight block 600 is at least partially arranged in the counterweight bin 241, the counterweight block 600 is provided with a clamping groove 610 on the side surface, and the counterweight block 600 is provided with a positioning groove 620 at the bottom.

[0106] In the embodiment of the application, the counterweight bin is provided with a first positioning protrusion at the bottom, the counterweight block is provided with a positioning groove matched with the first positioning protrusion, after the counterweight block is arranged in the counterweight bin, the first positioning protrusion is inserted into the positioning groove, through the cooperation of the first positioning protrusion and the positioning groove, the shaking amplitude of the counterweight block in the counterweight bin is reduced, and the counterweight block locking mechanism locks the counterweight block more stably.

[0107] The claw and the counterweight seat are in sliding connection, a sliding groove for the claw to slide can be arranged on the counterweight seat to limit the sliding direction of the claw. When the counterweight block in the counterweight bin needs to be taken out, the claw slides relative to the counterweight seat, the claw is retracted into the counterweight seat, the claw lock tongue is separated from the counterweight bin, the claw lock tongue is separated from the clamping groove on the side surface of the counterweight block, the claw lock tongue no longer stops the counterweight block, and the counterweight block can be smoothly taken out from the counterweight bin.

[0108] The clamping jaw is in sliding connection with the counterweight seat, and the end of the clamping jaw extending into the counterweight bin is a clamping jaw lock tongue. When the counterweight block is placed in the counterweight bin, the clamping jaw lock tongue extends into the counterweight bin and extends into the clamping groove on the side of the counterweight block. The top of the counterweight bin is provided with an inlet and outlet, and the counterweight block can only enter and exit the counterweight bin through the inlet and outlet. The counterweight block can be prevented from being separated from the counterweight bin by the stop of the clamping jaw lock tongue.

[0109] Further, the clamping groove 610 is arranged as an annular groove, and the annular groove circumferentially surrounds the counterweight block 600.

[0110] In the embodiment of the present application, after the counterweight block is placed in the counterweight bin and the first positioning protrusion is inserted into the positioning groove, no matter where the counterweight block rotates, the clamping jaw lock tongue is opposite to the clamping groove, and the clamping jaw lock tongue can extend into the clamping groove after extending into the counterweight bin, thereby facilitating the user to lock the counterweight block.

[0111] Further, the counterweight block 600 is arranged as a cylinder, the positioning groove 620 is arranged as a cylinder, and the positioning groove 620 is coaxial with the counterweight block 600. After the counterweight block is placed in the counterweight bin, the first positioning protrusion is facilitated to extend into the positioning groove, thereby reducing the operation difficulty.

[0112] Further, the bottom of the counterweight block 600 is provided with a round corner 630.

[0113] In the embodiment of the present application, the bottom of the counterweight block 600 is provided with a round corner, that is, the diameter of the bottom of the counterweight block 600 is smaller, thereby facilitating the counterweight block to be placed in the counterweight bin.

[0114] The clamping jaw is in sliding connection with the counterweight seat, and the end of the clamping jaw extending into the counterweight bin is a clamping jaw lock tongue. When the counterweight block is placed in the counterweight bin, the clamping jaw lock tongue extends into the counterweight bin and extends into the clamping groove on the side of the counterweight block. The top of the counterweight bin is provided with an inlet and outlet, and the counterweight block can only enter and exit the counterweight bin through the inlet and outlet. The counterweight block can be prevented from being separated from the counterweight bin by the stop of the clamping jaw lock tongue. The bottom of the counterweight bin is provided with a first positioning protrusion, and the counterweight block is provided with a positioning groove matched with the first positioning protrusion. After the counterweight block is placed in the counterweight bin, the first positioning protrusion is inserted into the positioning groove. Through the cooperation of the first positioning protrusion and the positioning groove, the shaking range of the counterweight block in the counterweight bin can be reduced, so that the counterweight block locking mechanism locks the counterweight block more stably. The clamping jaw and the counterweight seat are in sliding connection, and a sliding groove for the clamping jaw to slide can be arranged on the counterweight seat to limit the sliding direction of the clamping jaw. When the counterweight block in the counterweight bin needs to be taken out, the clamping jaw slides relative to the counterweight seat, the clamping jaw is withdrawn from the counterweight seat, the clamping jaw lock tongue is separated from the counterweight bin, the clamping jaw lock tongue is separated from the clamping groove on the side of the counterweight block, and the clamping jaw lock tongue no longer stops the counterweight block, so that the counterweight block can be smoothly taken out from the counterweight bin. By adjusting whether the clamping jaw lock tongue extends into the counterweight bin through the sliding of the clamping jaw relative to the counterweight seat, the counterweight block is taken out and placed, so as to adjust the weight of the bell, thereby simplifying the operation.

[0115] Reference Figures 24-30 Further, the counterweight seat 240 comprises a base 260, a base cover 280 and a top cover 270, the top cover 270 and the base 260 are detachably fixedly connected, the base 260 is provided with a first sub sliding cavity 261, the position of the top cover 270 opposite to the first sub sliding cavity 261 is provided with a second sub sliding cavity 271, the base 260 is provided with a plurality of counterweight compartments 241 arranged circumferentially along the axis thereof, the position of the top cover 270 opposite to the counterweight compartments 241 is provided with a third through hole 276 for the counterweight block to pass through, the top cover 270 and the base 260 are closed to make the first sub sliding cavity 261 and the second sub sliding cavity 271 form a sliding cavity for accommodating the sliding of the pressing column, the side of the base 260 facing the top cover 270 and / or the side of the top cover 270 facing the base 260 is provided with a sliding groove 272 for the sliding of the clamping claw, one end of the sliding groove 272 is communicated with the counterweight compartment 241, the other end of the sliding groove 272 is communicated with the sliding cavity, and the sliding groove 272 is provided with a limiting block 250.

[0116] In the embodiment of the present application, the side of the base facing the top cover is provided with a first sub sliding cavity, which can be coaxial with the base but is not limited to. The side of the top cover facing the base is provided with a second sub sliding cavity, which can be coaxial with the top cover but is not limited to. The first sub sliding cavity is opposite to the second sub sliding cavity, and after the top cover and the base are closed, the first sub sliding cavity and the second sub sliding cavity can form a sliding cavity. The pressing column slides in the sliding cavity, and the sliding cavity limits the direction and range of the sliding of the pressing column. When assembling the counterweight seat and placing the pressing column into the sliding cavity, the top cover and the base are separated to expose the first sub sliding cavity, and after the pressing column is placed into the first sub sliding cavity, the top cover and the base are closed, the pressing column enters the second sub sliding cavity, which reduces the difficulty of assembling the pressing column into the sliding cavity. When the pressing column needs to be taken out of the sliding cavity, the top cover and the base can be separated, which facilitates the taking out of the pressing column and the maintenance and repair of the pressing column.

[0117] The side of the base facing the top cover and / or the side of the top cover facing the base is provided with a sliding groove for the sliding of the clamping claw. Specifically, the side of the base facing the top cover can be provided with a sliding groove; the side of the top cover facing the base can be provided with a sliding groove; or the side of the base facing the top cover and the side of the top cover facing the base are respectively provided with a sliding groove, and after the top cover and the base are closed, the clamping claw slides in the sliding groove, and the sliding groove can limit the sliding direction of the clamping claw. The top cover and the base can be separated to expose the sliding groove, which facilitates the placing of the clamping claw into the sliding groove and reduces the installation difficulty of the clamping claw. When the clamping claw needs to be taken out of the sliding groove, the top cover and the base can be separated, which facilitates the taking out of the clamping claw and the maintenance and repair of the clamping claw.

[0118] One end of the sliding groove is communicated with the counterweight bin, so that the pawl can extend into the counterweight bin to clamp the counterweight therein. By arranging a rolling element between the pawl and the pressing column, the pawl can move along the side surface of the pressing column. The other end of the sliding groove is communicated with the sliding cavity, so that the rolling element can extend out of the sliding groove to abut against the side surface of the pressing column. The rolling element can be a ball.

[0119] A limiting block is arranged in the sliding groove, and the pawl is provided with a limiting hole. The limiting block passes through the limiting hole to limit the sliding range of the pawl. The limiting block can also support the second spring in the limiting hole.

[0120] Further, the base 260 is fixedly connected with a limiting block, and the top cover 270 is provided with a slot at a position opposite to the limiting block. The limiting block is inserted into the slot. Alternatively, the top cover 270 is fixedly connected with a limiting block 250, and the base 260 is provided with a slot 262 at a position opposite to the limiting block 250. The limiting block 250 is inserted into the slot 262. Alternatively, the top cover 270 and the base 260 are respectively provided with slots at positions opposite to the limiting block. The two ends of the limiting block are respectively inserted into the two slots.

[0121] In the embodiment of the application, the limiting block can be fixedly connected with the base, and the top cover is provided with a slot at a position opposite to the limiting block. When the top cover and the base are closed, one end of the limiting block away from the base is inserted into the slot. When the limiting block is stressed, the top cover and the base support the two ends of the limiting block respectively, so that the stress on one end of the limiting block is avoided, the stress on the limiting block is more balanced, and the reliability of the limiting block is improved. When the top cover and the base are separated, the limiting block is separated from the slot, so that the counterweight holder can be disassembled and assembled conveniently.

[0122] Alternatively, the limiting block can be fixedly connected with the base, and the top cover is provided with a slot at a position opposite to the limiting block. When the top cover and the base are closed, one end of the limiting block away from the base is inserted into the slot. When the limiting block is stressed, the top cover and the base support the two ends of the limiting block respectively, so that the stress on one end of the limiting block is avoided, the stress on the limiting block is more balanced, and the reliability of the limiting block is improved. When the top cover and the base are separated, the limiting block is separated from the slot, so that the counterweight holder can be disassembled and assembled conveniently. Figure 27 28 Alternatively, the limiting block can be fixedly connected with the base, and the top cover is provided with a slot at a position opposite to the limiting block. When the top cover and the base are closed, one end of the limiting block away from the base is inserted into the slot. When the limiting block is stressed, the top cover and the base support the two ends of the limiting block respectively, so that the stress on one end of the limiting block is avoided, the stress on the limiting block is more balanced, and the reliability of the limiting block is improved. When the top cover and the base are separated, the limiting block is separated from the slot, so that the counterweight holder can be disassembled and assembled conveniently.

[0123] Alternatively, the top cover and the base are respectively provided with slots. One end of the limiting block is inserted into one slot, and the other end of the limiting block is inserted into the other slot when the top cover and the base are closed. When the limiting block is stressed, the top cover and the base support the two ends of the limiting block respectively, so that the stress on one end of the limiting block is avoided, the stress on the limiting block is more balanced, and the reliability of the limiting block is improved. When the top cover and the base are separated, one end of the limiting block can be separated from one slot, so that the counterweight holder can be disassembled and assembled conveniently.

[0124] ​Further, the base 260 is provided with a first rolling groove 263 for the rolling of the ball on the side facing the top cover 270, the first rolling groove 263 is located between the limiting block 250 and the sliding cavity, and the first rolling groove 263 is communicated with the first sub sliding cavity 261.

[0125] In the embodiment of the application, when assembling the counterweight seat, the pressing column is placed into the sliding cavity, the pawl is placed into the sliding groove, the ball is placed between the pawl and the pressing column, the ball is partially located in the first rolling groove, and the ball rolls along the length direction of the first rolling groove, so that the ball is kept between the pawl and the pressing column, the first rolling groove plays a role in limiting the rolling range of the ball, and the reliability of the rolling of the ball in the counterweight seat is ensured.

[0126] Further, the top cover 270 is provided with a second rolling groove 273 opposite the first rolling groove 263, and the second rolling groove 273 is communicated with the second sub sliding cavity 271.

[0127] In the embodiment of the application, when assembling the counterweight seat, the pressing column is placed into the sliding cavity, the pawl is placed into the sliding groove, the ball is placed between the pawl and the pressing column, the ball is partially located in the second rolling groove, and the ball rolls along the length direction of the second rolling groove, so that the ball is kept between the pawl and the pressing column, the second rolling groove plays a role in limiting the rolling range of the ball, and the reliability of the rolling of the ball in the counterweight seat is ensured.

[0128] Further, the top cover 270 and the base 260 are connected through a plurality of second bolts 274, the first nut 275 is screwed after the second bolt 274 passes through the top cover 270 and the base 260, the base 260 is provided with a nut seat on the side away from the top cover 270, the nut seat is provided with a first internal hexagonal hole 264, and the first nut 275 is located in the first internal hexagonal hole 264.

[0129] In the embodiment of the application, the top cover and the base are connected through a plurality of second bolts, and detachable fixed connection between the top cover and the base is realized. The first nut is screwed after the second bolt passes through the top cover and the base, the bolt head of the second bolt is located on the side of the top cover away from the base, the first countersunk hole can be arranged on the side of the top cover away from the base, and the bolt head of the second bolt is avoided from leaking out. The base is provided with a nut seat on the side away from the top cover, the nut seat is provided with a first internal hexagonal hole, and the first nut is located in the first internal hexagonal hole. When the top cover and the base are fixed through the second bolt and the second bolt is rotated, the first internal hexagonal hole plays a role in fixing the first nut, the first nut is avoided from rotating with the second bolt, and the assembly of the top cover and the base is facilitated.

[0130] Further, the counterweight bin 241 comprises a bin bottom 2412, a bin side wall 2413, and a bin top, the bin side wall 2413 is arranged as an annular side wall, the bin side wall 2413 is provided with a second opening 2414 away from one side of the first sub sliding cavity 261, and the bin top is provided with an inlet and outlet 2415 for the counterweight block to enter and exit the counterweight bin 241.

[0131] In the embodiment of the present application, when the counterweight block is fixed with the counterweight seat, the counterweight block is placed into the counterweight bin from the inlet and outlet, the pawl extends into the counterweight bin to clamp the counterweight block, so as to avoid the counterweight block from being separated from the counterweight seat. When the counterweight block is taken out, the pawl is retracted into the sliding groove, the pawl is separated from the counterweight bin, and the counterweight block can be taken out of the counterweight bin from the inlet and outlet.

[0132] The bin side wall is provided with a second opening away from one side of the first sub sliding cavity, and when the counterweight block is taken out of the counterweight bin, a finger can be inserted into the counterweight bin from the second opening to abut against the side surface of the counterweight block, so as to facilitate taking out the counterweight block from the counterweight bin.

[0133] Further, the bin side wall 2413 is orthographically projected on the base 260 as a convex arc.

[0134] In the embodiment of the present application, the bin side wall is orthographically projected on the base as a convex arc, the counterweight block is cylindrical, and the counterweight bin is also cylindrical and matched with the counterweight block. The bin side wall is orthographically projected on the base as a convex arc, and the diameter of the counterweight block is greater than the width of the second opening, so as to avoid the counterweight block from being separated from the counterweight bin at the second opening.

[0135] The second opening is orthographically projected on the base at the edge of the base, the diameter of the base can be made as small as possible, so as to reduce the volume of the counterweight seat and save materials, and the production cost is reduced.

[0136] Reference Figures 24-30 Further, the base cover 280 is detachably fixedly connected with the base 260, the base 260 is located between the base cover 280 and the top cover 270, the base cover 280 is provided with a first support disc 281 on the side facing the base 260, the outer diameter of the first support disc 281 is smaller than the outer diameter of the base cover 280, the base 260 is provided with a second support disc 265 on the side facing the base cover 280, the outer diameter of the second support disc 265 is smaller than the outer diameter of the base 260, the outer diameter of the first support disc 281 is equal to the outer diameter of the second support disc 265, the first support disc 281 is opposite to the second support disc 265, and the first support disc 281 and the second support disc 265 are jointly sleeved with the buffer ring 230.

[0137] In the embodiment of the present application, the base is detachably fixedly connected with the base cover on the side away from the top cover. When the rotating bell is assembled, the base cover is located on the side of the counterweight base facing the handle. When the user holds the handle and uses the rotating bell for muscle training, the base cover can protect the user from contacting the counterweight base when the bell rotates, thereby ensuring the safety of the user.

[0138] The base cover is provided with a first supporting disc, and the base is provided with a second supporting disc. After the base cover and the base are fixed, the first supporting disc and the second supporting disc are combined to form a fixing groove for fixing the buffer ring, preventing the buffer ring from moving relative to the counterweight base, and ensuring the stability of the buffer ring. By fixing the base cover and the base, the first supporting disc and the second supporting disc are combined to form a fixing groove, which facilitates the disassembly and assembly of the buffer ring. When the user uses the rotating bell for muscle training, the bell can rotate relative to the bell rod. The bell can be placed on the ground. The user holds the handle, and the bell can roll on the ground to serve as an abdominal wheel. The buffer ring can prevent the bell from directly contacting the ground and being worn, and can also increase the friction between the buffer ring and the ground to prevent the bell from slipping.

[0139] Further, the base cover 280 and the base 260 are connected by a plurality of third bolts 283. The third bolts 283 are screwed with second nuts 284 after penetrating the base cover 280 and the base 260. The counterweight bin 241 is provided with a first positioning protrusion 2411 at the bottom. A second internal hexagonal hole 2416 is arranged in the first positioning protrusion 2411 and penetrates the first positioning protrusion 2411 to face one end of the top cover 270. The second nut 284 is located in the second internal hexagonal hole 2416.

[0140] In the embodiment of the present application, the base cover and the base are connected by a plurality of third bolts to achieve detachable fixed connection between the base cover and the base. The third bolts are screwed with second nuts after penetrating the base cover and the base. The bolt head of the third bolt is located on the side of the base cover away from the base. A second countersunk hole can be arranged on the side of the base cover away from the base to avoid the bolt head of the third bolt from protruding.

[0141] The counterweight bin is provided with a first positioning protrusion at the bottom, and the counterweight block is provided with a positioning groove at the bottom. When the counterweight block is placed in the counterweight bin, the first positioning protrusion is inserted into the positioning groove. Through the cooperation of the first positioning protrusion and the positioning groove, and the clamping of the pawl on the counterweight block, the counterweight block can be prevented from separating from the counterweight bin, thereby ensuring the safety of the rotating bell.

[0142] The first positioning protrusion is internally provided with a second internal hexagonal hole, the second nut is located in the second internal hexagonal hole, when the base cover and the base are fixed through the third bolt, the second internal hexagonal hole plays a role of fixing the second nut, avoids the second nut from rotating with the third bolt, and facilitates assembly of the base cover and the base. The second nut is placed in the second internal hexagonal hole, which can also avoid the second nut from protruding from the first positioning protrusion, and ensures that the first positioning protrusion can be smoothly inserted into the positioning groove.

[0143] Further, the fifth annular protrusion 231 is internally provided with a plurality of fixing protrusions 232, and the fixing protrusions 232 are provided with fixing holes 233.

[0144] In the embodiment of the application, when the base cover and the base are fixed, and the buffer ring is sleeved on the first support disc and the second support disc, the fifth annular protrusion is located between the first support disc and the second support disc, the first support disc and the second support disc can clamp the fifth annular protrusion, and the buffer ring is prevented from rotating relative to the counterweight base. The base cover or the base is provided with a fixing column, the fixing protrusion is provided with a fixing hole, the fixing column passes through the fixing hole when the base cover and the base are fixed, and the reliability of the connection between the buffer ring and the counterweight base is further improved, and the buffer ring is prevented from rotating relative to the counterweight base.

[0145] The above description is merely preferred embodiments of the present application and a description of the principles of the applied technology. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A rotary bell with adjustable bell weight, characterized in that The application relates to a bell mechanism and a bell head with adjustable weight, the two ends of the bell mechanism are respectively rotationally connected with the bell heads, the two ends of the bell mechanism are respectively provided with push-lock sliding keys which are slidingly connected with the bell mechanism, one side of any bell head facing the other bell head is provided with a lock tongue hole, and the push-lock sliding key comprises a lock tongue. The push-lock sliding key slides relative to the bell mechanism so that the lock tongue enters or leaves the lock tongue hole. The lock tongue enters the lock tongue hole to prevent the bell head from rotating relative to the bell mechanism. The bell head comprises a counterweight seat and counterweight blocks, the counterweight seat is provided with a plurality of counterweight compartments which are arranged in a circumferential direction along an axis of the counterweight seat, the counterweight compartments are used for accommodating the counterweight blocks, the counterweight compartments are provided with import and export ports for the counterweight blocks to enter or leave, the import and export ports are located at one end of the counterweight seat, the counterweight seat is provided with a claw synchronous telescopic mechanism, the claw synchronous telescopic mechanism comprises a plurality of claws which are synchronously slidingly telescopic, the counterweight blocks are locked in the counterweight compartments through at least one claw, the claw synchronous telescopic mechanism comprises a pressing column which is slidingly connected with the counterweight seat, one end of the pressing column is a pressing end, the counterweight seat is provided with a sliding cavity for the pressing column to slide, one end of the sliding cavity is provided with a first opening for the pressing end to expose the counterweight seat, a first spring is arranged in the sliding cavity, the first spring provides elastic force for the pressing end to expose the first opening, the side surface of the pressing column is provided with a first annular matching surface and a second annular matching surface, the diameter of the first annular matching surface is smaller than that of the second annular matching surface, one end of the claw close to the pressing column moves along the side surface of the pressing column, the counterweight seat is provided with a sliding groove for the claw to slide, one end of the sliding groove is communicated with the sliding cavity, the other end of the sliding groove is communicated with the counterweight compartment, the counterweight seat is provided with a limiting block, the claw is provided with a limiting hole, the limiting block passes through the limiting hole, a second spring is arranged in the limiting hole and located at the side of the limiting block away from the counterweight compartment.

2. The adjustable bell weight turnbells according to claim 1, wherein, The bell mechanism comprises a main shaft and a handle, the main shaft passes through the handle and is rotationally connected with the handle, and the bell head is detachably fixedly connected with the end of the main shaft.

3. The adjustable bell weight turnbells according to claim 2, wherein, The main shaft is arranged as a stepped shaft, the main shaft is provided with a first annular protrusion and shaft heads located on both sides of the first annular protrusion, the first annular protrusion and the shaft heads are shaft shoulders, a bearing sleeve is sleeved on the shaft heads, the shaft shoulders are used for stopping the bearing, the shaft heads are sleeved with a stop ring, one end of the stop ring abuts against the inner ring of the bearing, and the other end of the stop ring abuts against the bell head.

4. The adjustable weight turnbuckle of claim 3, wherein, The push-lock sliding key is located between the check ring and the handle, and comprises a sliding seat provided with at least one push-lock mechanism, the push-lock mechanism comprising the lock tongue and a first stop portion, the lock tongue being located at one end of the sliding seat opposite the bell, the lock tongue extending from the end of the sliding seat, the first stop portion being located on the side of the sliding seat facing the handle, the first stop portion extending from the side of the sliding seat, the first stop portion being connected with the sliding seat through an elastic connecting portion, and the handle is provided with a first through hole for the first stop portion to extend out.

5. The adjustable weight turnbuckle of claim 3, wherein, The bell is detachably fixedly connected with a positioning plate provided with a second through hole, the shaft head portion is located in the second through hole, and the first bolt is screwed with the shaft head end portion, the first bolt is sleeved with a check piece, the diameter of the check piece is greater than the hole diameter of the second through hole, and the check piece is located on the side of the positioning plate away from the check ring.

6. The adjustable weight turnbuckle of claim 1, wherein, The second stop portion is arranged at one end of the sliding cavity close to the first opening, the third annular protrusion is arranged on the side of the pressing column, the first annular fitting surface is the side of the third annular protrusion, the second stop portion stops the third annular protrusion, the third stop portion is arranged at one end of the sliding cavity away from the first opening, the third stop portion stops the pressing column, and the second stop portion is formed by extending the side of the first opening away from the sliding cavity to the inside of the first opening.

7. The adjustable weight turnbuckle of claim 1, wherein, The fourth annular protrusion is arranged on the side of the pressing column, the second annular fitting surface is the side of the fourth annular protrusion, the first spring is sleeved with the pressing column, the first spring is located on the side of the fourth annular protrusion away from the first opening, the fourth stop portion is formed by bending the inner wall of the sliding cavity to the inside of the sliding cavity, and the first spring is located between the fourth stop portion and the fourth annular protrusion.

8. The adjustable weight turnbuckle of claim 1, wherein, The end of the claw extending into the weight bin from the side of the weight bin is a claw lock tongue, the first positioning protrusion is arranged on the bottom of the weight bin, the weight block is provided with a clamping groove on the side thereof, When the end of the claw close to the pressing column moves to be opposite to the second annular fitting surface, the claw lock tongue extends into the clamping groove to lock the weight block.

9. The adjustable weight turnbuckle of claim 1, wherein, The weight seat comprises a base, a base cover and a top cover, The top cover and the base are detachably fixedly connected, the base is provided with a first sub-sliding cavity, the position of the top cover opposite to the first sub-sliding cavity is provided with a second sub-sliding cavity, the base is provided with a plurality of weight bins arranged circumferentially along the axis thereof, the position of the top cover opposite to the weight bin is provided with a third through hole for the weight block to pass through, The top cover and the base are closed to make the first sub-sliding cavity and the second sub-sliding cavity constitute the sliding cavity, and the side of the base facing the top cover and / or the side of the top cover facing the base is provided with a sliding groove, The base cover is detachably fixedly connected with the base, one side of the base cover facing the base is provided with a first supporting disc, the outer diameter of the first supporting disc is smaller than the outer diameter of the base cover, one side of the base facing the base cover is provided with a second supporting disc, the outer diameter of the second supporting disc is smaller than the outer diameter of the base, the outer diameter of the first supporting disc is equal to the outer diameter of the second supporting disc, the first supporting disc directly faces the second supporting disc, and the first supporting disc and the second supporting disc are jointly sleeved with a buffer ring.

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