MULTIFUNCTIONAL KETTLEBELL

Description

TECHNICAL FIELD

The present invention relates to a kettlebell.

BACKGROUND OF THE INVENTION

Chinese patent document CN220918030U discloses a weight adjustable kettlebell, comprising a shell, a handle, a plurality of weight stacks, and a base, where the shell comprises an inner shell, an outer shell, and a weight support frame; the weight support frame is fixed to the inner shell and the outer shell, and hangers corresponding to the weight stacks are provided on the weight support frame; the weight stacks are positioned and stacked in sequence, each weight stack is provided with an arc-shaped hanging stop corresponding to the hanger, and the arc-shaped hanging stops are arranged from top to bottom in sequence from long to short to form weight adjustment shifts; a central positioning seat is provided on the base, a turntable is provided between the base and the central positioning seat, the weight stacks are positioned and placed on the central positioning seat, and the shell is positioned and placed on the turntable and covers the weight stacks; and when the handle drives the shell to rotate, the hangers slide to positions below the corresponding arc-shaped hanging stops to achieve weight adjustment.

The kettlebell with the above structure can be used as only a kettlebell for exercise. Although the weight can be adjusted, the kettlebell cannot achieve other functional exercises.

BRIEF SUMMARY OF THE INVENTION

In view of the shortcomings of existing technologies, the present invention aims to provide a multifunctional kettlebell that can be used as both a kettlebell and a dumbbell or barbell.

The objective of the present invention is achieved through the following technical solution:

A multifunctional kettlebell comprises a shell with a grip and a plurality of weight blocks, and further comprises at least one grip bar detachably assembled with the weight blocks to form a dumbbell or barbell, where the shell comprises two flip shells, which can flip between an open state and a closed state; a first mounting groove for placing the weight block is provided on an inner side of the flip shell; the two flip shells in the closed state are interlocked oppositely to form a kettlebell, and the two flip shells in the open state are opened to store the weight blocks.

During use, the weight blocks can be placed in the first mounting grooves of the flip shells and the two flip shells are closed to serve as a kettlebell, and the weight blocks can be assembled with the at least one grip bar to serve as a dumbbell or barbell. Therefore, the kettlebell provided by the present invention has multiple functions.

A plurality of first mounting grooves adapted to the weight blocks are provided on the inner side of the flip shell, or a first mounting groove adapted to the plurality of weight blocks with peripheral surfaces arranged closely is provided on the inner side of the flip shell.

A first mounting groove may be provided for each weight block, so that the weight blocks are mounted independently without affecting each other, and stable mounting of each weight block is ensured; or the plurality of weight blocks with peripheral surfaces arranged closely may be mounted in a first mounting groove, and because the plurality of weight blocks are arranged closely, the weight blocks will not shake to affect their stable mounting.

A first mounting groove adapted to four weight blocks are provided on the inner side of the flip shell, and the four weight blocks are arranged closely in a matrix, which can ensure that the weight blocks can be flexibly assembled into a dumbbell or barbell having various weights, thereby reasonably utilizing the space in the shell, preventing the volume of the shell from being too large, and facilitating use as a kettlebell.

The two flip shells have opposite interlocking edges, the interlocking edge of one of the flip shells is formed with an edge groove that extends along its length direction, the interlocking edge of the other flip shell is formed with a convex edge that extends along its length direction and is adapted to the edge groove, and after the two flip shells are interlocked oppositely, the convex edge is embedded into the edge groove to prevent the two flip shells from dislocation movement after closure.

The shell further comprises a bottom shell, and lower ends of the two flip shells are rotatably connected to two sides of the bottom shell. The bottom shell can ensure better strength of the bottom of the shell.

Lower edges of the two flip shells in the closed state are adaptively spliced with an upper edge of the bottom shell, an inner side of the lower edge of the flip shell is formed with a receiving groove that extends along its length direction, and an inner side of the upper edge of the bottom shell is formed with a receiving protrusion adapted to the receiving groove, which can ensure that the bottom shell and the two flip shells form the shell with a stable structure after being closed.

The flip shell is rotatably connected to the bottom shell through a hinge mechanism; the hinge mechanism comprises a first pivot seat, a second pivot seat, and a connecting rod; the first pivot seat comprises two parallel and opposite first adapter plates arranged on the flip shell, the second pivot seat comprises two parallel and opposite second adapter plates arranged on the bottom shell, one end of the connecting rod is rotatably arranged between the two first adapter plates through a first pivot shaft, and the other end of the connecting rod is rotatably arranged between the two second adapter plates through a second pivot shaft. The connecting rod enables the flip shell to flip more flexibly to avoid interference between components.

The flip shells are rotatably connected to the bottom shell through two hinge mechanisms, the two hinge mechanisms share one first pivot shaft and one second pivot shaft, the first pivot shaft crosses the two first adapter plates and one end of the connecting rod of the two hinge mechanisms, and the second pivot shaft crosses the two second adapter plates and the other end of the connecting rod of the two hinge mechanisms. The two hinge mechanisms can ensure that the rotation of the flip shells is more stable.

A switch mechanism for keeping the two flip shells in the closed state is further comprised; the switch mechanism comprises a button, a spring, and a locking hole; the button is arranged on one of the flip shells movably between a locking position and a release position, the spring is used for driving the button to move to the locking position, the button is provided with a locking portion protruding upwards, and a locking hole is provided on the other flip shell; when the button is in the locking position, the locking portion is embedded into the locking hole to limit the opening of the two flip shells; when the button is pressed in the release position, the locking portion disengages from the locking hole to open the two flip shells.

The shell is in a kettlebell shape with a small top and a large bottom, which is more suitable for use as a kettlebell.

Half of the grip is formed at an upper end of one of the flip shells, the other half of the grip is formed at an upper end of the other flip shell, and the two flip shells are closed to form the grip.

A dovetail groove is formed on one side of the weight block, one end of the dovetail groove is closed and the other end is opened on the peripheral surface of the weight block, a first insertion portion adaptively inserted in the dovetail groove is formed on the other side of the weight block, two adjacent weight blocks are in insertion fit through the first insertion portions and the dovetail grooves, and a locking mechanism for limiting the sliding of the first insertion portion relative to the dovetail groove is provided on the weight block.

The locking mechanism comprises a knob, a driving block, a slider, and a spring; the slider is arranged on the weight block in a sliding manner between the locking position and the release position, the sliding direction of the slider is perpendicular to the length direction of the dovetail groove, the slider has a limit portion that can extend into the dovetail groove, and the first insertion portion is formed with a first limit groove adapted to the limit portion; when the slider is in the locking position, the limit portion is embedded into the first limit groove to limit the sliding of the first insertion portion relative to the dovetail groove; the driving block is rotatably arranged on the weight block, the knob is connected to the driving block, the driving block has an arc-shaped convex surface, and the slider has an arc-shaped concave surface adapted to the arc-shaped convex surface; when the knob drives the driving block to rotate, the arc-shaped convex surface and the arc-shaped concave surface cooperate to drive the slider to move to the release position, and the spring drives the slider to move to the locking position.

The locking mechanism comprises two sliders located on two sides of the driving block and two springs that drive the two sliders to slide to the locking position, and the limit portions of the two sliders are arranged oppositely. The two limit portions simultaneously limit the sliding of the first insertion portion, which can improve the stability of limiting the first insertion portion.

A chute for sliding the slider and mounting the driving block is formed on the peripheral surface of the weight block, a cover plate covering the chute is provided on the weight block, the driving block is rotatably arranged in the chute through a rotating shaft, and the rotating shaft passes through the cover plate and is connected to the knob. The structure facilitates assembly of the product.

A second mounting groove adapted to the grip bar is provided on the inner side of the flip shell, and the second mounting groove is located below the first mounting groove.

All components of the product can be stored in the shell to facilitate storage and transportation of the product.

A plurality of grip bars assembled with the weight blocks to form a dumbbell or barbell are further comprised, the grip bars are of tubular structures, a detachable connection seat is provided on at least two weight blocks, the connection seat is provided with a second insertion portion in insertion fit with the dovetail groove, a connection structure detachably connected to the connection seat is provided at each of two ends of at least one grip bar, a reducing insertion segment is formed at one end of the at least one grip bar, and a connection structure detachably connected to the connection seat is provided at the other end of the at least one grip bar; a reducing insertion segment is formed at one end of the at least one grip bar, and the insertion segment of another grip bar can be inserted into the other end; a retractable elastic buckle is provided on a peripheral surface of the insertion segment, and the grip bar is provided with a buckle hole for inserting the elastic buckle. Different grip bars can be selected and assembled into the dumbbell or barbell.

The connection structure comprises a mounting plate arranged in the grip bar, the mounting plate is provided with a screw hole, the connection seat is connected to the connection structure through a bolt, and the bolt is locked and connected to the screw hole after passing through the connection seat. The structure is simple, the operation is convenient, and the cost is low.

A buckle hole is formed at one end of the grip bar provided with a connection structure.

A circular groove is formed on the connection seat to receive an end of the grip bar, a protruding positioning portion is provided on a wall of the circular groove, and a positioning notch adapted to the positioning portion is formed at the end of the grip bar, which can achieve fast positioning of the grip bar and the connection seat and prevent the grip bar from rotating relative to the connection seat.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described in detail below in conjunction with the accompanying drawings.

FIG. 1 is a three-dimensional view of the present invention, showing two flip shells in a closed state.

FIG. 2 is a three-dimensional view of the present invention, showing two flip shells in an open state.

FIG. 3 is an exploded view of members of the present invention.

FIG. 4 is an exploded view of members of a switch mechanism.

FIG. 5 is a front view of the present invention.

FIG. 6 is a cross-sectional view taken along line A-A in FIG. 5.

FIG. 7 is an enlarged view of part D in FIG. 6.

FIG. 8 is a three-dimensional view of a third grip bar.

FIG. 9 is a main view of a dumbbell provided by the present invention.

FIG. 10 is a cross-sectional view taken along line B-B in FIG. 9.

FIG. 11 is an exploded view of members of the dumbbell.

FIG. 12 is an exploded view of members of the dumbbell from another perspective.

FIG. 13 is a three-dimensional view of a weight block.

FIG. 14 is a three-dimensional view of the weight block from another perspective.

FIG. 15 is an exploded view of members of the weight block.

FIG. 16 is an exploded view of members of the weight block from another perspective.

FIG. 17 is an exploded view of members of a locking mechanism.

FIG. 18 is a three-dimensional view of a barbell provided by the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIGS. 1 to 7, a multifunctional kettlebell comprises a shell 1, eight weight blocks 3, a first grip bar 62, four second grip bars 61, and a third grip bar 63.

The shell 1 comprises a bottom shell 13, a first flip shell 11, and a second flip shell 12. Lower ends of the first flip shell 11 and the second flip shell 12 are rotatably connected to two sides of the bottom shell 13 respectively, so that the first flip shell 11 and the second flip shell 12 can flip between an open state and a closed state. The first flip shell 11 and the second flip shell 12 in the closed state are interlocked oppositely to form a kettlebell. The first flip shell 11 and the second flip shell 12 in the open state are opened to store the weight blocks 3. The first flip shell 11 and the second flip shell 12 have opposite interlocking edges, the interlocking edge of the first flip shell 11 is formed with an edge groove 112 that extends along its length direction, the interlocking edge of the second flip shell 12 is formed with a convex edge 122 that extends along its length direction and is adapted to the edge groove 112. After the first flip shell 11 and the second flip shell 12 are interlocked oppositely, the convex edge 122 is embedded into the edge groove 112 to prevent the first flip shell 11 and the second flip shell 12 from dislocation movement after closure. In order to increase the strength of the bottom shell 13, a metal support plate 132 is provided on the bottom shell 13, and the metal support plate 132 is locked to a top of the bottom shell 13 by bolts.

Lower edges of the first flip shell 11 and the second flip shell 12 in the closed state are adaptively spliced with an upper edge of the bottom shell 13. An inner side of the lower edge of each of the first flip shell 11 and the second flip shell 12 is formed with a receiving groove 16 that extends along its length direction, and an inner side of the upper edge of the bottom shell 13 is formed with a receiving protrusion 131 adapted to the receiving groove 16, which can ensure that the bottom shell 13, the first flip shell 11, and the second flip shell 12 form the shell 1 with a stable structure after being closed.

The first flip shell 11 and the second flip shell 12 are rotatably connected to the bottom shell 13 through two hinge mechanisms 5. The hinge mechanism 5 comprises a first pivot seat, a second pivot seat, and a connecting rod 53. The first pivot seat comprises two parallel and opposite first adapter plates 51 arranged on the first flip shell and the second flip shell, the second pivot seat comprises two parallel and opposite second adapter plates 52 arranged on the bottom shell, one end of the connecting rod 53 is rotatably arranged between the two first adapter plates 51 through a first pivot shaft 54, the other end of the connecting rod 53 is rotatably arranged between the two second adapter plates 52 through a second pivot shaft 55, the connecting rod 53 is of a plate-like structure, the first pivot shaft 54 crosses the two first adapter plates 51 and one end of the connecting rod 53 of the two hinge mechanisms 5, and the second pivot shaft 55 crosses the two second adapter plates 52 and the other end of the connecting rod 53 of the two hinge mechanisms 5. The two hinge mechanisms 5 enable the first flip shell 11 and the second flip shell 12 to rotate more stably.

An upper end of the shell 1 is formed with a ring grip a, half of the ring grip a is formed at an upper end a1 of the first flip shell 11, and the other half of the ring grip a is formed at an upper end a2 of the second flip shell 12. In order to keep the first flip shell 11 and the second flip shell 12 in the closed state, a switch mechanism 2 is provided at a lower edge of the ring grip a. The switch mechanism 2 comprises a mounting seat 21, a button 23, a spring 22, and a locking hole 111. The mounting seat 21 is locked on an inner side of the second flip shell 12 by a bolt 211, the button 23 is arranged between the mounting seat 21 and the second flip shell 12 in an up-and-down movable manner between a locking position and a release position, the button 23 comprises a pressing portion 231 protruding upwards and a locking arm 235 extending outwards, a locking portion 232 protruding upwards is formed on the locking arm 235, and a yielding hole 121 that avoids the pressing portion 231 is formed on the second flip shell 12. In order to better guide the button 23 to move up and down, two guide rods 234 and 233 extending downwards are provided at a bottom of the button 23. Guide holes 212 through which the guide rods 234 and 233 pass are formed on the mounting seat 21, the spring 22 is sleeved on the guide rod 234 and compressed between the mounting seat 21 and the button 23 to drive the button 23 to move upwards to the locking position, and the locking hole 111 is formed on the first flip shell 11. When the first flip shell 11 and the second flip shell 12 are closed, the locking portion 232 is embedded into the locking hole 111 under the action of the spring 22, so that the first flip shell 11 and the second flip shell 12 cannot be opened. For the convenience of closure of the first flip shell 11 and the second flip shell 12, an inclined guide surface 2321 is formed on the locking portion 232, Through the guide surface 2321, the first flip shell 11 and the second flip shell 12 can be smoothly closed, and the locking portion 232 can be automatically embedded into the locking hole 111 under the drive of the spring 22. When the shell 1 needs to be opened, the button 23 is pressed to move to the release position. In this case, the locking portion 232 disengages from the locking hole 111, so that the first flip shell 11 and the second flip shell 12 can be opened.

A first mounting groove A that accommodates four weight blocks 3 is provided on the inner side of each of the first flip shell 11 and the second flip shell 12, and peripheral surfaces of the four weight blocks 3 are arranged closely in a matrix. Due to the close arrangement of the four weight blocks 3, the weight blocks 3 will not shake. The first mounting groove A is enclosed by annular side plates 14, three second mounting grooves B adapted to the grip bars are formed at a bottom of the first mounting groove A, and the second mounting groove B is enclosed by a plurality of rib plates 15. After the first flip shell 11 and the second flip shell 12 are closed, the four weight blocks 3 on the first flip shell 11 and the four weight blocks 3 on the second flip shell 12 are arranged oppositely and closely together to prevent the weight blocks 3 from shaking.

With reference to FIGS. 8 to 17, a dumbbell comprises a first grip bar 62 and eight weight blocks 3. A detachable connection seat 4 is provided on two weight blocks 3, a connection structure detachably connected to the connection seat 4 is provided at each of two ends of the first grip bar 62, the first grip bar 62 is of a tubular structure, the connection structure comprises a mounting plate 623 arranged in the first grip bar 62, the mounting plate 623 is provided with a screw hole 622, the connection seat 4 is connected to the screw hole 622 through a bolt 624, the bolt 624 is locked and connected to the screw hole 622 after passing through the connection seat 4, and the connection seat 4 is formed with a perforation 42 through which the bolt 624 passes. The structure is simple, the operation is convenient, and the cost is low. A circular groove 44 is formed at one end of the connection seat 4 to receive an end of the first grip bar 62, and a protruding positioning portion 45 is provided on a wall of the circular groove 44. A positioning notch 621 adapted to the positioning portion 45 is formed at the end of the first grip bar 62, which can achieve fast positioning of the first grip bar 62 and the connection seat 4 and prevent the first grip bar 62 from rotating relative to the connection seat 4. An operating groove 43 that avoids a nut of the bolt 624 is formed at the other end of the connection seat 4. The operating groove 43 can avoid the nut and provide an operating space.

A dovetail groove 32 is formed on one side of the weight block 3, one end of the dovetail groove 32 is closed and the other end is opened on the peripheral surface of the weight block 3, and a first insertion portion 31 adaptively inserted in the dovetail groove 32 is formed on the other side of the weight block 3. Two adjacent weight blocks 3 are in insertion fit through the first insertion portions 32 and the dovetail grooves 32. A locking mechanism for limiting the sliding of the first insertion portion 32 relative to the dovetail groove 32 is provided on the weight block 3, a second insertion portion 41 in insertion fit with the dovetail groove 32 is formed on the other side of the connection seat 4, and the locking mechanism can also limit the sliding of the second insertion portion 41 relative to the dovetail groove 32. The weight block 3 comprises an outer shell 3a, an end cover 3b, and a metal block 3c. One end of the outer shell 3a is opened, the metal block 3c is arranged in the outer shell 3a, and the end cover 3b closes an opening of the outer shell 3a.

The locking mechanism comprises a knob 71, a driving block 72, two sliders 73, and two springs 74. A chute C for sliding the two sliders 73 and mounting the driving block 72 and the two springs 74 are formed on the peripheral surface of the weight block 3, the driving block 72 is rotatably arranged at a middle position of the chute C through a rotating shaft 721, and the two sliders 73 are arranged on two sides of the driving block 72 in a sliding manner. The slider 73 is of a plate-like structure, a notch 733 adapted to the spring 74 is formed on the slider, the spring 74 is arranged in the notch 733 and compressed between the slider 73 and a wall of the chute C, the movement direction of the slider 73 is perpendicular to the length direction of the dovetail groove 32, and a cover plate 75 covering the chute C is provided on the weight block 3. Specifically, a buckle hole 33 is formed on the weight block 3, a buckle 751 fitting the buckle hole 33 is formed on the cover plate 75, the cover plate 75 is buckled on the weight block 3, the driving block 72 is rotatably arranged in the chute C through the rotating shaft, a shaft hole C1 through which the rotating shaft passes is provided in the chute C, the rotating shaft 721 of the driving block 72 passes through the cover plate 75, and the knob 71 is connected to the rotating shaft 721. The structure facilitates assembly of the product. The two sliders 73 can be arranged in the chute C in a sliding manner between the locking position and the release position. The slider 73 has a limit portion 731 that can extend into the dovetail groove, and the limit portions 731 of the two sliders 73 are arranged oppositely. The first insertion portion 31 is formed with a first limit groove 311 adapted to the limit portion 731, and the second insertion portion 41 is also formed with a second limit groove 411 having the same structure. When the slider 73 is in the locking position, the limit portion 731 is embedded into the first limit groove 311 to limit the sliding of the first insertion portion 31 relative to the dovetail groove 32. An arc-shaped convex surface 722 is formed on each of two sides of the driving block 72, and each of the two sliders 73 has an arc-shaped concave surface 732 adapted to the arc-shaped convex surface. When the knob 71 drives the driving block 72 to rotate, the arc-shaped convex surface 722 cooperates with the arc-shaped concave surface 732 to drive the slider 73 to move to the release position, and the spring 74 drives the slider 73 to move to the locking position. When the slider 73 is in the release position, the limit portion 731 disengages from the first limit groove 311, so that the first insertion portion 31 can slide relative to the dovetail groove 32. Through the above structure, quick disassembly and assembly of the weight blocks 3 can be achieved to adjust the weight of the dumbbell, and quick disassembly and assembly of the weight block 3 and the connection seat 4 can also be achieved.

With reference to FIG. 18, a barbell differs from the dumbbell only in an intermediate bar provided for an exerciser to grip. The intermediate bar provided for the exerciser to grip is formed by insertion of two second grip bars 61, a first grip bar 62, and a third grip bar 63. The second grip bars 61 and the third grip bar 63 are also of tubular structures. A reducing insertion segment 631 is formed at one end of the third grip bar 63, a connection structure detachably connected to a connection seat 4 is provided at the other end, and the connection structure is the same as that of the first grip bar 62. A reducing insertion segment 611 is formed at one end of the second grip bar 61, and the insertion segment of another grip bar can be inserted into the other end. Retractable elastic buckles 632 and 612 are arranged on peripheral surfaces of the insertion segments 631 and 611, the second grip bar is provided with buckle holes 613 for inserting the elastic buckles 632 and 612, and the first grip bar 62 is also provided with buckle holes for inserting the elastic buckles. The first grip bar 62, the two second grip bars 61, and the third grip bar 63 are sequentially inserted to form the intermediate bar for the exerciser to grip, thereby assembling into the barbell.