Multifunctional Kettlebell

The present invention relates to a kettlebell.

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.

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.

As shown in, a multifunctional kettlebell comprises a shell, eight weight blocks, a first grip bar, four second grip bars, and a third grip bar.

The shellcomprises a bottom shell, a first flip shell, and a second flip shell. Lower ends of the first flip shelland the second flip shellare rotatably connected to two sides of the bottom shellrespectively, so that the first flip shelland the second flip shellcan flip between an open state and a closed state. The first flip shelland the second flip shellin the closed state are interlocked oppositely to form a kettlebell. The first flip shelland the second flip shellin the open state are opened to store the weight blocks. The first flip shelland the second flip shellhave opposite interlocking edges, the interlocking edge of the first flip shellis formed with an edge groovethat extends along its length direction, the interlocking edge of the second flip shellis formed with a convex edgethat extends along its length direction and is adapted to the edge groove. After the first flip shelland the second flip shellare interlocked oppositely, the convex edgeis embedded into the edge grooveto prevent the first flip shelland the second flip shellfrom dislocation movement after closure. In order to increase the strength of the bottom shell, a metal support plateis provided on the bottom shell, and the metal support plateis locked to a top of the bottom shellby bolts.

Lower edges of the first flip shelland the second flip shellin the closed state are adaptively spliced with an upper edge of the bottom shell. An inner side of the lower edge of each of the first flip shelland the second flip shellis formed with a receiving groovethat extends along its length direction, and an inner side of the upper edge of the bottom shellis formed with a receiving protrusionadapted to the receiving groove, which can ensure that the bottom shell, the first flip shell, and the second flip shellform the shellwith a stable structure after being closed.

The first flip shelland the second flip shellare rotatably connected to the bottom shellthrough two hinge mechanisms. The hinge mechanismcomprises a first pivot seat, a second pivot seat, and a connecting rod. The first pivot seat comprises two parallel and opposite first adapter platesarranged on the first flip shell and the second flip shell, the second pivot seat comprises two parallel and opposite second adapter platesarranged on the bottom shell, one end of the connecting rodis rotatably arranged between the two first adapter platesthrough a first pivot shaft, the other end of the connecting rodis rotatably arranged between the two second adapter platesthrough a second pivot shaft, the connecting rodis of a plate-like structure, the first pivot shaftcrosses the two first adapter platesand one end of the connecting rodof the two hinge mechanisms, and the second pivot shaftcrosses the two second adapter platesand the other end of the connecting rodof the two hinge mechanisms. The two hinge mechanismsenable the first flip shelland the second flip shellto rotate more stably.

An upper end of the shellis formed with a ring grip a, half of the ring grip a is formed at an upper end aof the first flip shell, and the other half of the ring grip a is formed at an upper end aof the second flip shell. In order to keep the first flip shelland the second flip shellin the closed state, a switch mechanismis provided at a lower edge of the ring grip a. The switch mechanismcomprises a mounting seat, a button, a spring, and a locking hole. The mounting seatis locked on an inner side of the second flip shellby a bolt, the buttonis arranged between the mounting seatand the second flip shellin an up-and-down movable manner between a locking position and a release position, the buttoncomprises a pressing portionprotruding upwards and a locking armextending outwards, a locking portionprotruding upwards is formed on the locking arm, and a yielding holethat avoids the pressing portionis formed on the second flip shell. In order to better guide the buttonto move up and down, two guide rodsandextending downwards are provided at a bottom of the button. Guide holesthrough which the guide rodsandpass are formed on the mounting seat, the springis sleeved on the guide rodand compressed between the mounting seatand the buttonto drive the buttonto move upwards to the locking position, and the locking holeis formed on the first flip shell. When the first flip shelland the second flip shellare closed, the locking portionis embedded into the locking holeunder the action of the spring, so that the first flip shelland the second flip shellcannot be opened. For the convenience of closure of the first flip shelland the second flip shell, an inclined guide surfaceis formed on the locking portion, Through the guide surface, the first flip shelland the second flip shellcan be smoothly closed, and the locking portioncan be automatically embedded into the locking holeunder the drive of the spring. When the shellneeds to be opened, the buttonis pressed to move to the release position. In this case, the locking portiondisengages from the locking hole, so that the first flip shelland the second flip shellcan be opened.

A first mounting groove A that accommodates four weight blocksis provided on the inner side of each of the first flip shelland the second flip shell, and peripheral surfaces of the four weight blocksare arranged closely in a matrix. Due to the close arrangement of the four weight blocks, the weight blockswill not shake. The first mounting groove A is enclosed by annular side plates, 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. After the first flip shelland the second flip shellare closed, the four weight blockson the first flip shelland the four weight blockson the second flip shellare arranged oppositely and closely together to prevent the weight blocksfrom shaking.

With reference to, a dumbbell comprises a first grip barand eight weight blocks. A detachable connection seatis provided on two weight blocks, a connection structure detachably connected to the connection seatis provided at each of two ends of the first grip bar, the first grip baris of a tubular structure, the connection structure comprises a mounting platearranged in the first grip bar, the mounting plateis provided with a screw hole, the connection seatis connected to the screw holethrough a bolt, the boltis locked and connected to the screw holeafter passing through the connection seat, and the connection seatis formed with a perforationthrough which the boltpasses. The structure is simple, the operation is convenient, and the cost is low. A circular grooveis formed at one end of the connection seatto receive an end of the first grip bar, and a protruding positioning portionis provided on a wall of the circular groove. A positioning notchadapted to the positioning portionis formed at the end of the first grip bar, which can achieve fast positioning of the first grip barand the connection seatand prevent the first grip barfrom rotating relative to the connection seat. An operating groovethat avoids a nut of the boltis formed at the other end of the connection seat. The operating groovecan avoid the nut and provide an operating space.

A dovetail grooveis formed on one side of the weight block, one end of the dovetail grooveis closed and the other end is opened on the peripheral surface of the weight block, and a first insertion portionadaptively inserted in the dovetail grooveis formed on the other side of the weight block. Two adjacent weight blocksare in insertion fit through the first insertion portionsand the dovetail grooves. A locking mechanism for limiting the sliding of the first insertion portionrelative to the dovetail grooveis provided on the weight block, a second insertion portionin insertion fit with the dovetail grooveis formed on the other side of the connection seat, and the locking mechanism can also limit the sliding of the second insertion portionrelative to the dovetail groove. The weight blockcomprises an outer shell, an end cover, and a metal block. One end of the outer shellis opened, the metal blockis arranged in the outer shell, and the end covercloses an opening of the outer shell

The locking mechanism comprises a knob, a driving block, two sliders, and two springs. A chute C for sliding the two slidersand mounting the driving blockand the two springsare formed on the peripheral surface of the weight block, the driving blockis rotatably arranged at a middle position of the chute C through a rotating shaft, and the two slidersare arranged on two sides of the driving blockin a sliding manner. The slideris of a plate-like structure, a notchadapted to the springis formed on the slider, the springis arranged in the notchand compressed between the sliderand a wall of the chute C, the movement direction of the slideris perpendicular to the length direction of the dovetail groove, and a cover platecovering the chute C is provided on the weight block. Specifically, a buckle holeis formed on the weight block, a bucklefitting the buckle holeis formed on the cover plate, the cover plateis buckled on the weight block, the driving blockis rotatably arranged in the chute C through the rotating shaft, a shaft hole Cthrough which the rotating shaft passes is provided in the chute C, the rotating shaftof the driving blockpasses through the cover plate, and the knobis connected to the rotating shaft. The structure facilitates assembly of the product. The two sliderscan be arranged in the chute C in a sliding manner between the locking position and the release position. The sliderhas a limit portionthat can extend into the dovetail groove, and the limit portionsof the two slidersare arranged oppositely. The first insertion portionis formed with a first limit grooveadapted to the limit portion, and the second insertion portionis also formed with a second limit groovehaving the same structure. When the slideris in the locking position, the limit portionis embedded into the first limit grooveto limit the sliding of the first insertion portionrelative to the dovetail groove. An arc-shaped convex surfaceis formed on each of two sides of the driving block, and each of the two slidershas an arc-shaped concave surfaceadapted to the arc-shaped convex surface. When the knobdrives the driving blockto rotate, the arc-shaped convex surfacecooperates with the arc-shaped concave surfaceto drive the sliderto move to the release position, and the springdrives the sliderto move to the locking position. When the slideris in the release position, the limit portiondisengages from the first limit groove, so that the first insertion portioncan slide relative to the dovetail groove. Through the above structure, quick disassembly and assembly of the weight blockscan be achieved to adjust the weight of the dumbbell, and quick disassembly and assembly of the weight blockand the connection seatcan also be achieved.

With reference to, 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, a first grip bar, and a third grip bar. The second grip barsand the third grip barare also of tubular structures. A reducing insertion segmentis formed at one end of the third grip bar, a connection structure detachably connected to a connection seatis provided at the other end, and the connection structure is the same as that of the first grip bar. A reducing insertion segmentis formed at one end of the second grip bar, and the insertion segment of another grip bar can be inserted into the other end. Retractable elastic bucklesandare arranged on peripheral surfaces of the insertion segmentsand, the second grip bar is provided with buckle holesfor inserting the elastic bucklesand, and the first grip baris also provided with buckle holes for inserting the elastic buckles. The first grip bar, the two second grip bars, and the third grip barare sequentially inserted to form the intermediate bar for the exerciser to grip, thereby assembling into the barbell.