Kettle bell

Abstract

The invention relates to the technical field of fitness equipment, and discloses a kettle-bell which comprises a kettle body, a balance weight adjusting assembly and a second direction limiting structure, and the kettle body is provided with an opening cavity; the balance weight adjusting assembly comprises an adjusting part and N balance weight parts which are sequentially arranged in a stacked mode in the first direction, and the opening cavity is used for containing the N balance weight parts. The adjusting piece can move relative to the kettle body and is provided with M bearing parts distributed at intervals in the first direction, N is larger than or equal to 1, and M is larger than or equal to 1 and smaller than or equal to N; the adjusting piece moves in the second direction to selectively connect the j counter weight pieces to the kettle body, at least the j-th bearing part bears the j-th counter weight selection position of the j-th counter weight piece, and j is larger than or equal to 1 and smaller than or equal to M; the adjusting piece is provided with an initial balance weight selection position where any balance weight piece is not connected to the kettle body; according to the kettle-bell provided by the invention, the total weight of the kettle body can be changed only by moving the adjusting piece to different counterweight selection positions.

Description

Technical Field

[0001] The present application relates to the technical field of fitness equipment, and in particular to a kettlebell. Background Art

[0002] In the fitness equipment industry, kettlebells, as a common training equipment, play an important role in strength training and functional training. Traditional kettlebells are usually designed with fixed weights. Users need to replace kettlebells of different weights when performing exercises of different intensities, which not only increases the burden on users, but also takes up a lot of storage space.

[0003] In order to meet the needs of users for weight-adjustable kettlebells, the total weight of the kettle body is often adjusted by increasing or decreasing the number of weight blocks in the kettle body. In the kettlebells of the related art, when it is necessary to increase the weight block, the weight block is sleeved on the screw rod in the kettle body, and then the nut is tightened to limit all the weight blocks in the kettle body. When it is necessary to reduce the weight block, the nut is unscrewed, the weight block to be reduced is removed from the screw rod, and then the nut is tightened again to increase or decrease the weight block in the kettle body.

[0004] However, when adjusting the total weight of the kettlebell, the nut needs to be completely disassembled and the weight blocks need to be manually added or removed, which is time-consuming and labor-intensive and affects the user experience. Application Contents

[0005] In view of this, the present application provides a kettlebell to solve the existing problem that when adjusting the total weight of the kettle body, it is necessary to completely disassemble the nut and then manually add or remove the weight block, which is time-consuming and labor-intensive and affects the user experience.

[0006] The present application provides a kettlebell, comprising: The pot body has an open mouth; A weight adjustment assembly, comprising an adjustment member and N weight members stacked in sequence along a first direction, wherein the opening cavity is used to accommodate the N weight members; the adjustment member can move relative to the kettle body, and the adjustment member has M supporting portions spaced apart along the first direction, wherein N≥1, 1≤M≤N; The adjusting member has a function of moving along the second direction to selectively connect j counterweight members to the kettle body, and at least the jth supporting portion receives the jth counterweight selection position of the jth counterweight member, wherein 1≤j≤M; The adjusting member has an initial weight selection position where any weight member is not connected to the kettle body; The second direction limiting structure has a locking position for limiting the limit position of the adjusting member in the second direction, and an unlocking position for releasing the limit position of the adjusting member in the second direction.

[0007] Beneficial effects: When the kettle body needs to be connected to j counterweights (connection: integrated with the kettle body, and during the movement of the kettle body, the counterweights connected to the kettle body also move accordingly), first place the second-direction limiting structure in the unlocked position, then move the adjusting member along the second direction to the j-th counterweight selection position, and then place the second-direction limiting structure in the locked position. At this time, at least the j-th supporting portion supports the j-th counterweight. Since the N counterweights are arranged in layers along the first direction, when the j-th supporting portion supports the j-th counterweight, it will also support all the counterweights above the j-th counterweight, that is, it can support j counterweights; by moving the adjusting member to different counterweight selection positions, different numbers of counterweights can be connected to the kettle body, thereby realizing the increase and decrease of the counterweights in the kettle body, and further realizing the adjustment of the total weight of the kettle body. The kettlebell provided by this application can change the total weight of the kettle body only by moving the adjusting member to different counterweight selection positions, without the need for additional tools or complex disassembly and assembly steps. The operation is simple and convenient. Users can quickly adjust the total weight of the kettle body according to their own needs, meeting different training intensity requirements and improving the user experience. In addition, after completing the increase and decrease of the counterweights through the adjusting member, the second-direction limiting structure is placed in the locked position to limit the adjusting member in the second direction and prevent the adjusting member from moving along the second direction, thereby avoiding the situation where the position of the adjusting member changes during the user's use, resulting in the detachment of the counterweights.

[0008] In an optional implementation manner, each of the counterweights is provided with a through hole, and a to-be-supported portion is arranged on the inner side wall of each through hole. The N through holes enclose a hollow cavity, and the hollow cavity has a reference plane. The distances between the N to-be-supported portions and the reference plane increase in a gradient along the first direction; M of the supporting portions are all located in the hollow cavity; When at the j-th counterweight selection position, at least the j-th supporting portion abuts against the j-th to-be-supported portion.

[0009] Beneficial effects: The distances between the N to-be-supported portions and the reference plane increase in a gradient along the first direction, so that when each supporting portion disengages from the hollow cavity, it can only support the counterweights connected to the kettle body and cannot support other counterweights. Specifically, when at the j-th counterweight selection position, at least the j-th supporting portion abuts against the j-th to-be-supported portion, and the first to j-th to-be-supported portions can be connected to the kettle body; at this time, since the distances between the (j + 1)-th to N-th to-be-supported portions and the reference plane are all greater than the distance between the j-th to-be-supported portion and the reference plane, the (j + 1)-th to N-th supporting portions are located in the space between the corresponding to-be-supported portions and the reference plane, that is, the (j + 1)-th to N-th to-be-supported portions are not connected to the kettle body. When lifting the kettle body, only j counterweights can be lifted simultaneously, and the (j + 1)-th to N-th counterweights are not lifted.

[0010] In an alternative embodiment, each of the counterweight members is provided with a plugging portion and a plugging groove, and the (i + 1)-th plugging portion is plugged into the i-th plugging groove, where 1 ≤ i ≤ N - 1.

[0011] Advantageous effects: The adjacent counterweight members are plugged and matched through the plugging portion and the plugging groove, so as to avoid the dislocation and mutual sliding between the adjacent counterweight members, and enable each counterweight member to maintain its own position, so that the subsequent counterweight selection operation can be carried out smoothly. In addition, through the plugging and matching between the adjacent counterweight members through the plugging portion and the plugging groove, it is convenient for the quick disassembly and assembly of each counterweight member.

[0012] In an alternative embodiment, it further includes: A first support seat, located in the open cavity and fixedly connected to the inner wall of the open cavity. A first sliding hole is formed on the first support seat, and the extending direction of the first sliding hole is the second direction; A first slider, slidably connected to the first sliding hole and fixedly connected to the adjusting member; A second slider. A second sliding hole is formed on the kettle body. The second slider is slidably connected to the second sliding hole, and the second slider passes through the second sliding hole and is fixedly connected to the first slider; The second slider slides along the extending direction of the second sliding hole and drives the adjusting member to move along the second direction, so as to switch to different counterweight selection positions.

[0013] Advantageous effects: When the second slider moves along the extending direction of the second sliding hole, since the second slider is fixedly connected to the first slider, the second slider will drive the first slider to move, so that the first slider moves along the extending direction of the first sliding hole. Since the first slider is fixedly connected to the adjusting member, the first slider will drive the adjusting member to move along the extending direction of the first sliding hole, so as to move the adjusting member to different counterweight selection positions, thereby realizing connecting different numbers of counterweight members to the kettle body. The user can change the total weight of the kettle body by moving the second slider, without additional tools or complex disassembly and assembly steps, and the operation is simple and convenient.

[0014] In an alternative embodiment, the second direction limiting structure includes: A first limiting member, slidably connected to the second slider, and the first limiting member has a first clamping portion; A plurality of first clamping grooves are formed on the second sliding hole, and the plurality of first clamping grooves are spaced along the second direction; The first clamping portion has a locking position where it is plugged into one of the first clamping grooves and the first clamping groove limits the first clamping portion in the second direction, and an unlocking position where the first clamping portion is disengaged from the first clamping groove; The first limiting member moves along the first direction to switch between the locked position and the unlocked position.

[0015] Advantageous effects: Through the insertion and detachment of the first limiting member and the first engaging groove, the limiting and unlocking of the adjusting member in the second direction are achieved. When the first engaging portion is inserted into the first engaging groove, the first engaging groove can limit the first engaging portion in the second direction, so that the adjusting member is in the required counterweight selection position, avoiding displacement of the adjusting member during use, and thus avoiding the safety hazard of the counterweight falling off due to the movement of the adjusting member. When the first engaging portion is detached from the first engaging groove, it is convenient for the user to adjust the counterweight as needed, and the operation is simple and convenient.

[0016] In an optional embodiment, the second-direction limiting structure further includes: A second limiting member, which is slidably connected to the first slider, and the second limiting member has a second engaging portion; A plurality of second engaging grooves are provided on the inner wall of the open cavity, and the plurality of second engaging grooves are sequentially connected end to end along the second direction; An elastic member, which is respectively connected to the second limiting member and the first slider, and the elastic member has an initial elastic force for driving the second engaging portion to be inserted into one of the second engaging grooves; The first limiting member has a third engaging portion. In the locked position, the third engaging portion abuts against the second limiting member to limit the second engaging portion; in the unlocked position, the third engaging portion is separated from the second limiting member, and the first slider can move along the second direction and drive the second engaging portion to move into an adjacent second engaging groove.

[0017] Advantageous effects: In the locked position, the third engaging groove abuts against the second limiting member to further limit the adjusting member in the second direction, preventing accidental movement of the adjusting member during use and improving the safety of use.

[0018] In an optional embodiment, it further includes: A base, on which the sequentially stacked counterweights are placed, and the base has a first protrusion, and the first protrusion is inserted into the Nth engaging groove.

[0019] Beneficial effects: The base provides support for the counterweights that are stacked in sequence, and the first protrusion is plugged into the Nth plug-in slot to prevent offset and misalignment between the counterweights and the base during the movement of the adjustment member, so that each counterweight maintains its own position, facilitating the smooth progress of subsequent counterweight selection operations. In addition, when the first protrusion is plugged into the Nth plug-in slot, the Nth counterweight can be placed on the base, and the placement position of the Nth counterweight can meet the requirements of subsequent counterweight selection operations, avoiding the need for users to adjust the position of the Nth counterweight. In addition, after the placement position of the Nth counterweight can meet the requirements of subsequent counterweight selection operations, since the adjacent counterweights are plugged in, it is guaranteed that the placement positions of other counterweights can also meet the requirements of subsequent counterweight selection operations.

[0020] In an optional embodiment, the base further has a second protrusion and a third protrusion, the kettle body has a first slot and a second slot, the second protrusion is used to be plugged into the first slot, and the third protrusion is used to be plugged into the second slot.

[0021] Beneficial effect: When the second protrusion is plugged into the second slot and the third protrusion is plugged into the first slot, the kettle body can be placed on the base. At the same time, the adjacent counterweights in the opening cavity are plugged into each other, which can prevent the counterweights from being misplaced and offset, and meet the requirements of subsequent counterweight selection operations. It is prevented that the user places the kettle body on the base at will, making it impossible to perform subsequent counterweight selection operations.

[0022] In an optional embodiment, a buffer pad is further included, which is arranged between the counterweight and the inner wall of the open cavity.

[0023] Beneficial effects: The buffer pad can reduce the impact force of the counterweight hitting the inner wall of the opening cavity, thereby reducing noise and reducing the damage of the counterweight to the inner wall of the opening cavity. In addition, by arranging the buffer pad between the counterweight and the inner wall of the opening cavity, the amplitude of the counterweight shaking is reduced, thereby further reducing the impact force of the counterweight hitting the inner wall of the opening cavity, thereby extending the service life of the kettle body and further reducing noise.

[0024] In an optional embodiment, it also includes a restraining ring, and the restraining ring (92) is sleeved on the outer periphery of the kettle body.

[0025] Beneficial effect: The restraining ring sleeve is arranged on the outer periphery of the kettle body, which increases the aesthetics of the kettle body and provides a tightening force to the kettle body to reduce the degree of deformation caused by the counterweight hitting the kettle body, thereby extending the service life of the kettle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the structure of the kettlebell in this application; Figure 2It is the A-A cross-sectional view of the kettlebell in this application; Figure 3 It is the B-B cross-sectional view of the kettlebell in this application; Figure 4 It is the schematic structural view of the kettlebell without the base in this application; Figure 5 It is the schematic structural view of the kettle body, the first support seat, the second limiting member and the elastic member in this application; Figure 6 It is the exploded schematic view of all the counterweight members, the buffer pads and the base in this application; Figure 7 It is the exploded schematic view of the first slider, the second slider, the first limiting member, the second limiting member, the elastic member, the second spring and the pressing block in this application; Figure 8 It is the schematic structural view of the first support seat in this application; Figure 9 It is Figure 1 The partial enlarged schematic view of Right A; Figure 10 It is the schematic structural view of the adjusting member in this application; Figure 11 It is the schematic structural view of one of the counterweight members in this application; Figure 12 It is the schematic view of the base in this application.

[0027] Explanation of reference numerals: 100, kettle body; 101, open cavity; 102, second sliding hole; 103, first clamping groove; 104, second clamping groove; 105, first slot; 106, second slot; 201, adjusting member; 2011, supporting part; 202, counterweight member; 2021, through hole; 2022, part to be supported; 2023, inserting part; 2024, inserting groove; 203, hollow cavity; 204, reference plane; 301, first limiting member; 3011, first clamping part; 3012, third clamping part; 302, second limiting member; 3021, second clamping part; 303, elastic member; 304, second spring; 401, first support seat; 4011, first sliding hole; 402, first slider; 403, second slider; 500, base; 501, first protrusion; 502, second protrusion; 503, third protrusion; 600, buffer pad; 700, restraint ring; 801, hand-held rod; 802, pressing block. Detailed implementation manners

[0028] The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0029] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0032] The following Figures 1 to 12 , describes an embodiment of the kettlebell of the present application.

[0033] Embodiments of the present application provide a kettlebell, which includes a kettle body 100, a weight adjustment assembly, and a second-direction limiting structure. The kettle body 100 has an open cavity 101. The weight adjustment assembly includes an adjustment member 201 and N weight members 202 stacked in sequence along a first direction. The open cavity 101 is used to accommodate the N weight members 202. The adjustment member 201 is movable relative to the kettle body 100. The adjustment member 201 has M supporting portions 2011 spaced apart along the first direction, where N≥1 and 1≤M≤N. The adjustment member 201 is movable along a second direction to selectively connect j weight members 202 to the kettle body 100, and at least the j-th supporting portion 2011 receives the j-th weight member 202 at a j-th weight selection position, where 1≤j≤M. The adjustment member 201 has an initial weight selection position where no weight member 202 is connected to the kettle body 100. The second-direction limiting structure has a locking position that limits the adjustment member 201 in the second direction and an unlocking position that releases the limitation of the adjustment member 201 in the second direction.

[0034] When the kettle body 100 needs to connect (connect: form an integral body with the kettle body 100. During the movement of the kettle body 100, the weight members 202 connected to the kettle body 100 also move accordingly) j weight members 202, first place the second-direction limiting structure in the unlocking position, then move the adjustment member 201 along the second direction to the j-th weight selection position, and then place the second-direction limiting structure in the locking position. At this time, at least the j-th supporting portion 2011 receives the j-th weight member 202. Since the N weight members 202 are stacked in sequence along the first direction, when the j-th supporting portion 2011 supports the j-th weight member 202, it will also support all the weight members 202 above the j-th weight member 202, that is, it can support j weight members 202. By moving the adjustment member 201 to different weight selection positions, different numbers of weight members 202 can be connected to the kettle body 100, thereby realizing the increase and decrease of the weight members 202 in the kettle body 100, and further realizing the adjustment of the total weight of the kettle body 100. The kettlebell provided by the present application can change the total weight of the kettle body 100 only by moving the adjustment member 201 to different weight selection positions, without the need for additional tools or complex disassembly and assembly steps. The operation is simple and convenient. The user can quickly adjust the total weight of the kettle body 100 according to their own needs, meeting different training intensity requirements and improving the user experience. In addition, after completing the increase and decrease of the weight members 202 through the adjustment member 201, the second-direction limiting structure is placed in the locking position to limit the adjustment member 201 in the second direction, avoiding the adjustment member 201 from moving along the second direction, so as to avoid the situation where the position of the adjustment member 201 changes during the user's use, resulting in the detachment of the weight members 202.

[0035] The kettle body 100 is used to provide structural support for other components, and is used to carry the counterweight 202 inside it and withstand the impact of the counterweight 202 on it during movement. In addition, the kettle body 100 can also protect the components inside it to avoid damage to the components inside the kettle body 100 caused by external impacts. For example Figure 2 and Figure 3 As shown, the kettle body 100 includes a main body and an embedded layer. The embedded layer is located in the main body. The main body can be formed by casting outside the embedded layer or can be assembled by plate components. The stiffness and strength of the embedded layer are higher than those of the main body. For example, the material of the main body can be plastic, and the material of the embedded layer can be steel. While taking economy into account, it can also ensure that the kettle body has the set strength and stiffness. In addition, the embedded layer is used to bear the loads from the outside and inside of the kettle body to ensure that the kettle body has the set strength and stiffness. In addition, the mass of the kettle body 100 itself can be changed without changing the overall structure of the kettle body 100 by adjusting the material of the embedded layer, so that the self-weight of the kettle body 100 has diversity. For example Figure 5 As shown, there is an open cavity 101 inside the kettle body 100. The open cavity 101 is used to accommodate N counterweights 202. Taking Figure 5 the perspective of... as an example, the opening on the kettle body 100 is provided at the bottom of the kettle body 100. The counterweight 202 can be incorporated into the open cavity 101 through this opening, or the counterweight 202 can be detached from the open cavity 101 through this opening. The shape of the open cavity 101 is adapted to the shape of the counterweight 202. Those skilled in the art can adjust the shapes of the open cavity 101 and the counterweight 202 according to needs.

[0036] The counterweight adjustment assembly includes an adjusting member 201 and N counterweights 202 stacked in sequence along the first direction. Among them, N≥1. In this embodiment, N is five. Of course, those skilled in the art can adjust the number of counterweights 202 according to needs; the first direction is the direction of gravity, that is, the vertical direction; the material of each counterweight 202 can be iron, lead or other common counterweight materials. In this embodiment, the cross-sectional shape of each counterweight 202 is circular, and the cross-sectional shape of the kettle body 100 is also circular. Of course, those skilled in the art can also adjust the shapes of the counterweight 202 and the kettle body 100 according to needs. For example Figure 2 and Figure 3 As shown, from top to bottom, N counterweights 202 are stacked in sequence. The mass distribution of the N counterweights 202 can be designed according to different user groups. For example, from top to bottom, the mass of the N counterweights 202 gradually increases, which can meet the needs of user groups with a large weight gain span for the kettle body 100. The adjusting member 201 can be pushed by the user or driven by a driving member to make the adjusting member 201 move relative to the kettle body 100. The driving member can be a mechanism that moves in a straight line, such as a cam, a cylinder, a linear motor, or a crank-slider. For example Figure 10As shown, the adjusting member 201 includes a rod body and M supporting portions 2011. The M supporting portions 2011 are fixedly connected or integrally formed with the rod body. The fixing method can be welding, clamping, riveting, or bolt connection. The M supporting portions 2011 are spaced apart along the first direction, where 1 ≤ M ≤ N. In this embodiment, the number of the supporting portions 2011 is five. Of course, those skilled in the art can adjust the number of the supporting portions 2011 according to needs. When it is necessary to connect j counterweight members 202 to the kettle body 100, the adjusting member 201 moves along the second direction to move the adjusting member 201 to the j-th counterweight selection position. At this time, at least the j-th supporting portion 2011 receives the j-th counterweight member 202, where 1 ≤ j ≤ M. Since the N counterweight members 202 are stacked in sequence along the first direction, when the j-th supporting portion 2011 supports the j-th counterweight member 202, it will also support all the counterweight members 202 above the j-th counterweight member 202, that is, it can support j counterweight members 202. As Figure 3 shown, three counterweight members 202 are connected to the kettlebell main body. At this time, the third supporting portion 2011 receives the third counterweight member 202, the second supporting portion 2011 receives the second counterweight member 202, and the first to fifth counterweight members 202 are stacked from top to bottom in sequence. Therefore, when the third supporting portion 2011 supports the third counterweight member 202, it will also support all the counterweight members 202 above the third counterweight member 202, and the second supporting portion 2011 will also support the second counterweight member 202 and support the first counterweight member 202 above it. Taking Figure 3 the perspective of... as an example, when the adjusting member 201 is moved to the rightmost position, the adjusting member 201 is in the initial counterweight selection position. At this time, none of the M supporting portions 2011 receive the corresponding counterweight members 202, that is, the adjusting member 201 does not connect any counterweight member 202 to the kettle body 100. In this position, the total weight of the kettle body 100 is the sum of the weight of the kettle body 100 and the weight of the adjusting member 201. After the adjusting member 201 is in the required counterweight selection position, the second-direction limiting structure can limit the adjusting member 201 in the second direction to prevent the adjusting member 201 from loosening or moving in the second direction, so as to realize the self-locking of the adjusting member 201 in the second direction, improve the safety of the kettlebell, and avoid the situation that the adjusting member 201 moves during strenuous exercise of the kettlebell.

[0037] Furthermore, as Figure 6 and Figure 11As shown, each counterweight 202 is provided with a through hole 2021. The through hole 2021 is used to provide a moving space for the corresponding supporting portion 2011. The through hole 2021 can be a rectangular through hole 2021. In this embodiment, the shape of the through hole 2021 is not limited. Taking the first counterweight 202 as an example from top to bottom, the first counterweight 202 has a first through hole 2021. The first supporting portion 2011 is located in the first through hole 2021, and the first supporting portion 2011 can move within the first through hole 2021. On the inner side wall of each through hole 2021, there is a portion 2022 to be carried. Each portion 2022 to be carried is used to abut against the corresponding supporting portion 2011, so that the supporting portion 2011 can support the counterweight 202 corresponding to the portion 2022 to be carried, as well as all the counterweights 202 above this counterweight 202. In this embodiment, taking Figure 11 as the perspective, the portion 2022 to be carried are two oppositely arranged protrusions, and the two protrusions are respectively located on the left and right inner side walls of the corresponding through hole 2021. Each supporting portion 2011 is located below the corresponding portion 2022 to be carried. As Figure 10 shown, each supporting portion 2011 is two bumps, and the two bumps are symmetrically arranged on both sides of the rod body of the adjusting member 201. The two bumps are respectively used to receive the corresponding two protrusions. As Figure 3 shown, N through holes 2021 enclose a hollow cavity 203. The hollow cavity 203 has a reference plane 204. The distance between the N portions 2022 to be carried and the reference plane 204 increases in a gradient manner along the first direction. The hollow cavity 203 is the moving space for the rod body of the adjusting member 201. In this embodiment, taking Figure 3Taking the perspective of as an example, the reference plane 204 is the right inner side wall surface of the hollow cavity 203. The shapes and sizes of each load-bearing part 2022 are the same. The distances between the N load-bearing parts 2022 and the reference plane 204 increase gradually along the first direction. The distances between the M supporting parts 2011 and the reference plane 204 are the same. So that when each supporting part 2011 disengages from the hollow cavity 203, it can only support the counterweight 202 connected to the kettle body 100, but cannot support other counterweights 202. Specifically, at the jth counterweight selection position, at least the jth supporting part 2011 abuts against the jth load-bearing part 2022, and then the first to jth load-bearing parts 2022 can be connected to the kettle body 100. At this time, since the distances between the (j + 1)th to Nth load-bearing parts 2022 and the reference plane 204 are all greater than the distance between the jth load-bearing part 2022 and the reference plane 204, the (j + 1)th to Nth supporting parts 2011 are located in the space of the distances between the corresponding load-bearing parts 2022 and the reference plane 204, that is, the (j + 1)th to Nth load-bearing parts 2022 are not connected to the kettle body 100. When lifting the kettle body 100, only j counterweights 202 can be lifted simultaneously, and the (j + 1)th to Nth counterweights 202 are not lifted. In this embodiment, j is three. At the third counterweight selection position, the third supporting part 2011 abuts against the third load-bearing part 2022, and the second supporting part 2011 abuts against the second load-bearing part 2022.

[0038] In an alternative embodiment, the distances between the N load-bearing parts 2022 and the reference plane 204 increase gradually along the first direction, and the lengths of the N load-bearing parts 2022 decrease gradually along the first direction. And each load-bearing part 2022 is in contact with the plane opposite to the reference plane 204, that is, each load-bearing part 2022 is in contact with the left side surface of the hollow cavity 203. So that at the jth counterweight selection position, the first to jth supporting parts 2011 all abut against the corresponding load-bearing parts 2022, so that when lifting the kettle body 100, the first to jth supporting parts 2011 can all abut against the corresponding load-bearing parts 2022.

[0039] In another alternative embodiment, the distances between the N load-bearing parts 2022 and the reference plane 204 are the same, while the distances between the N supporting parts 2011 and the reference plane 204 increase gradually along the first direction. And the width of the adjusting part 201 is equal to half of the width of the hollow cavity 203, and the other half of the width is the moving space of the adjusting part 201.

[0040] Furthermore, as Figure 6 and Figure 11 shown, each counterweight 202 is provided with a plug-in part 2023 and a plug-in slot 2024, as Figure 2As shown, the (i + 1)-th plugging part 2023 is plugged into the i-th plugging groove 2024, where 1 ≤ i ≤ N - 1. For example, the second plugging part 2023 is plugged into the first plugging groove 2024. During the counterweight selection process, each plugging part 2023 is plugged into the corresponding plugging groove 2024. In this embodiment, the plugging part 2023 is a convex block, and the plugging groove 2024 is a concave groove. The adjacent counterweight members 202 are plugged and matched through the plugging part 2023 and the plugging groove 2024 to avoid the dislocation and mutual sliding between the adjacent counterweight members 202, and to keep each counterweight member 202 in its own position, so as to ensure the smooth progress of the subsequent counterweight selection operation. In addition, through the plugging and matching of the adjacent counterweight members 202 through the plugging part 2023 and the plugging groove 2024, it is convenient for the quick disassembly and assembly of each counterweight member 202.

[0041] Further, the kettlebell provided in this embodiment further includes a first support seat 401, a first slider 402, and a second slider 403. As Figure 2 , Figure 3 and Figure 5 shown, the first support seat 401 is located in the open cavity 101 and is fixedly connected to the inner wall of the open cavity 101. The first support seat 401 is used to provide structural support for the adjusting member 201 and provide an installation structure for the adjusting member 201. As Figure 8 shown, the first support seat 401 is provided with a first sliding hole 4011, and the extending direction of the first sliding hole 4011 is the second direction. The first sliding hole 4011 is a long strip-shaped hole, and the second direction is the length direction of the first sliding hole 4011. As Figure 3 shown, the first slider 402 is located directly above the first sliding hole 4011. The first support seat 401 is provided with a sliding groove. The first slider 402 is provided with a first extension block, and the first extension block is inserted into the sliding groove and is slidably connected to the sliding groove. The extending direction of the sliding groove is the same as the extending direction of the first sliding hole 4011 and is spaced from the first sliding hole 4011. There are two sliding grooves, which are respectively located on both sides of the first sliding hole 4011. There are also two first extension blocks, and the two first extension blocks are respectively inserted into the two sliding grooves and are both slidably connected to the corresponding sliding grooves. The first slider 402 is further provided with a second extension block, and the second extension block is inserted into the first sliding hole 4011 and is in contact with and slidably connected to the inner side wall of the first sliding hole 4011. The bottom of the first slider 402 is provided with an installation groove. The upper end of the adjusting member 201 passes through the first sliding hole 4011 and extends into the installation groove and is fixedly connected to the installation groove. The fixing method can be one of welding, clamping, bolt connection, and riveting. In this embodiment, the adjusting member 201 is fixed to the first slider 402 by bolts. As Figure 9As shown, a second sliding hole 102 is formed in the kettle body 100. The second sliding hole 102 is located directly above the first sliding hole 4011, has the same length as the first sliding hole 4011, and is parallel to the first sliding hole 4011. The second slider 403 is slidably connected to the second sliding hole 102. The second slider 403 passes through the second sliding hole 102 and is fixedly connected to the first slider 402. The second slider 403 slides along the extending direction of the second sliding hole 102 and drives the adjusting member 201 to move in the second direction to switch different counterweight selection positions. When the second slider 403 moves along the extending direction of the second sliding hole 102, since the second slider 403 is fixedly connected to the first slider 402, the second slider 403 will drive the first slider 402 to move, so that the first slider 402 moves along the extending direction of the first sliding hole 4011. Since the first slider 402 is fixedly connected to the adjusting member 201, the first slider 402 will drive the adjusting member 201 to move along the extending direction of the first sliding hole 4011 to move the adjusting member 201 to different counterweight selection positions, thereby realizing connecting different numbers of counterweight members 202 to the kettle body 100. The user can change the total weight of the kettle body 100 by moving the second slider 403 without additional tools or complex disassembly and assembly steps, and the operation is simple and convenient.

[0042] Further, the second-direction limiting structure includes a first limiting member 301 and a second spring 304. As Figure 7 shown, a through hole is provided in the second slider 403. The first limiting member 301 passes through the through hole and is slidably connected to the inner wall of the through hole. The first limiting member 301 has a first clamping portion 3011, and the first clamping portion 3011 is a trapezoidal protrusion. A first groove is formed at the top of the first slider 402, and a second groove is formed at the bottom of the first limiting member 301. Two ends of the second spring 304 are respectively inserted into the first groove and the second groove and abut against the bottom walls of the first groove and the second groove respectively. The second spring 304 is used to provide a reset elastic force. As Figure 9As shown in the figure, a plurality of first engaging grooves 103 are formed in the second sliding hole 102. The plurality of first engaging grooves 103 are spaced apart along the second direction. Each engaging groove is a notch on the first sliding hole 4011, and the notch is a rectangular notch. In the locked position, the first engaging portion 3011 is inserted into one of the first engaging grooves 103, and the first engaging groove 103 limits the first engaging portion 3011 in the second direction. In the unlocked position, the second spring 304 is in a compressed state and provides a restoring elastic force. At this time, the second engaging portion 3021 disengages from the first engaging groove. The first limiting member 301 moves along the first direction to switch between the locked position and the unlocked position. By the insertion and disengagement of the first limiting member 301 and the first engaging groove 103, the limiting and unlocking of the adjusting member 201 in the second direction are achieved. When the first engaging portion 3011 is inserted into the first engaging groove 103, the first engaging groove 103 can limit the first engaging portion 3011 in the second direction, so that the adjusting member 201 is in the required counterweight selection position, avoiding the displacement of the adjusting member 201 during use, and thus avoiding the safety hazard of the counterweight member 202 falling off due to the movement of the adjusting member 201. When the first engaging portion 3011 disengages from the first engaging groove 103, it is convenient for the user to adjust the counterweight according to needs, and the operation is simple and convenient. When it is necessary to adjust the first limiting member 301 from the locked position to the unlocked position, press the first limiting member 301 forcefully so that the first limiting member 301 moves downward along the first direction. At this time, the second spring 304 is compressed and generates a restoring elastic force until the first engaging portion 3011 disengages from the first engaging groove 103, and the unlocking of the adjusting member 201 can be achieved. After releasing the first limiting member 301, the first limiting member 301 moves upward under the action of the restoring elastic force, so that the second spring 304 gradually returns to the normal state, and the first engaging portion 3011 is inserted into one of the engaging grooves to achieve the locking of the adjusting member 201.

[0043] Further, the second-direction limiting structure further includes a second limiting member 302 and an elastic member 303, as Figure 7As shown, the second limiting member 302 includes a first sliding block and a second sliding block which are oppositely arranged. The first sliding block 402 is provided with a first receiving groove and a second receiving groove which are arranged at intervals. The first sliding block is located in the first receiving groove, and one end of the first sliding block extends out of the first receiving groove. The second sliding block is located in the second receiving groove, and one end of the second sliding block extends out of the second receiving groove. A first blocking plate is provided on the first sliding block, and a second blocking plate is provided on the second sliding block. The first blocking plate and the second blocking plate are the second clamping portions 3021. The elastic member 303 is a first spring. One end of the elastic member 303 is fixedly connected to a part of the first sliding block located in the first receiving groove, and the other end extends into the second receiving groove and is connected to a part of the second sliding block located in the second receiving groove. The elastic member 303 has an initial elastic force, and this initial elastic force causes the first blocking plate to abut against the inner wall of the first receiving groove and the second blocking plate to abut against the inner wall of the second receiving groove. When the first sliding block and the second sliding block approach each other, the elastic member 303 is compressed to generate a restoring elastic force. As Figure 5 shown, a plurality of second clamping grooves 104 are provided on the inner wall of the open cavity 101. The plurality of second clamping grooves 104 are divided into two rows, and the plurality of second clamping grooves 104 in each row are connected end to end in sequence along the second direction. The initial elastic force of the elastic member 303 causes a part of the first sliding block extending out of the first receiving groove to be inserted into one of the second clamping grooves 104 in one row, and causes a part of the second sliding block extending out of the second receiving groove to be inserted into one of the second clamping grooves 104 in the other row. As Figure 7As shown, the first limiting member 301 has a third clamping portion 3012. The third clamping portion 3012 includes a first clamping claw and a second clamping claw that are oppositely arranged. In the locked position, the first clamping claw abuts against the first blocking plate, and the second clamping claw abuts against the second blocking plate to limit the first sliding block and the second sliding block and prevent the first sliding block and the second sliding block from approaching each other. In the unlocked position, since the first limiting member 301 needs to move downward, the first clamping claw and the second clamping claw are driven to move downward so that both the first clamping claw and the second clamping claw move below the first blocking plate and the second blocking plate to create a clearance space, allowing the first sliding block and the second sliding block to approach each other. At this time, the first slider 402 moves in the second direction to drive the second clamping portion 3021 to move into the adjacent second clamping groove 104. In the locked position, the third clamping groove abuts against the second limiting member 302 to further limit the adjusting member 201 in the second direction and prevent the adjusting member 201 from accidentally moving during use, thereby improving the safety of use. Each second clamping groove 104 is an arc-shaped groove. The part of the first sliding block inserted into the second clamping groove 104 is arc-shaped, and the part of the second sliding block inserted into the second clamping groove 104 is arc-shaped. During the movement of the adjusting member 201 in the second direction, this design reduces the frictional resistance of the first sliding block sliding through each second clamping groove 104 and reduces the frictional resistance of the second sliding block sliding through each second clamping groove 104, ensuring that the first sliding block and the second sliding block can move smoothly. The lower surface of the first blocking plate is a first inclined surface, and the lower surface of the second blocking plate is also a second inclined surface. The upper surface of the first clamping claw is a third inclined surface, and the upper surface of the second clamping claw is a fourth inclined surface. The slopes of the third inclined surface and the first inclined surface are the same, and the slopes of the second inclined surface and the fourth inclined surface are the same. In the unlocked position, the first inclined surface abuts against the third inclined surface, and the second inclined surface abuts against the fourth inclined surface.

[0044] Further, the kettlebell further includes a base 500, as Figure 12As shown, the counterweight members 202 stacked in sequence are placed on the base 500. The base 500 has a first protrusion 501, and the first protrusion 501 is an arc-shaped bump. The first protrusion 501 is inserted into the Nth insertion slot 2024, and the insertion slot 2024 is an arc-shaped groove. The Nth insertion slot 2024 is the insertion slot 2024 on the counterweight member 202 adjacent to the base 500. The base 500 provides support for the counterweight members 202 stacked in sequence. Through the insertion fit between the first protrusion 501 and the Nth insertion slot 2024, it is avoided that during the movement of the adjusting member 201, the counterweight members 202 and the base 500 are offset and misaligned, so that each counterweight member 202 maintains its own position, facilitating the smooth progress of the subsequent counterweight selection operation. In addition, when the first protrusion 501 is inserted into the Nth insertion slot 2024, the Nth counterweight member 202 can be placed on the base 500, and the placement position of the Nth counterweight member 202 can meet the requirements of the subsequent counterweight selection operation, avoiding the user needing to adjust the position of the Nth counterweight member 202. In addition, after the placement position of the Nth counterweight member 202 can meet the requirements of the subsequent counterweight selection operation, since the adjacent counterweight members 202 are all inserted and fitted, it is ensured that the placement positions of the other counterweight members 202 can also meet the requirements of the subsequent counterweight selection operation.

[0045] Further, as Figure 12 shown, the base 500 also has a second protrusion 502 and a third protrusion 503. The first protrusion 501 and the second protrusion 502 are arc-shaped bumps. As Figure 4 shown, the kettle body 100 has a first slot 105 and a second slot 106. The first slot 105 and the second slot 106 are arc-shaped grooves. The second protrusion 502 is used to be inserted into the first slot 105, and the third protrusion 503 is used to be inserted into the second slot 106. The distance between the second protrusion 502 and the central axis of the base 500 is greater than the distance between the third protrusion 503 and the central axis of the base 500, avoiding the user inserting the second protrusion 502 into the second slot 106 and the third protrusion 503 into the first slot 105. When the second protrusion 502 is inserted into the second slot 106 and the third protrusion 503 is inserted into the first slot 105, the kettle body 100 can be placed on the base 500. At the same time, the adjacent counterweight members 202 in the open cavity 101 are all inserted and fitted, which can prevent the counterweight members 202 from being misaligned and offset, and also meet the requirements of the subsequent counterweight selection operation. It avoids the situation that the user randomly places the kettle body 100 on the base 500, resulting in the inability to perform the subsequent counterweight selection operation.

[0046] Further, the kettlebell provided in this embodiment further includes a buffer pad 600, as Figure 6As shown, a buffer pad 600 is disposed between the counterweight 202 and the inner wall of the open cavity 101. The buffer pad 600 includes a plurality of buffer cotton strips, which are spaced apart around the central axis of the base 500. Each buffer cotton strip is made of an elastic material. The buffer pad 600 can reduce the impact force when the counterweight 202 hits the inner wall of the open cavity 101, thereby reducing noise and the damage of the counterweight 202 to the inner wall of the open cavity 101. In addition, by disposing the buffer pad 600 between the counterweight 202 and the inner wall of the open cavity 101, the amplitude of the counterweight 202 shaking is reduced, so as to further reduce the impact force when the counterweight 202 hits the inner wall of the open cavity 101, thereby prolonging the service life of the kettle body 100 and further reducing noise.

[0047] Further, the kettlebell provided in this embodiment, as Figures 1 to 3 shown, further includes a restraint ring 700, and the restraint ring 700 is sleeved on the outer periphery of the kettle body 100. The restraint ring 700 is sleeved on the outer periphery of the kettle body 100, which increases the aesthetic degree of the kettle body 100 and provides a tightening force to the kettle body 100 to reduce the degree of deformation caused by the counterweight 202 hitting the kettle body 100, thereby prolonging the service life of the kettle body 100.

[0048] Further, the kettlebell provided in this embodiment, as Figure 1 shown, further includes a pressing block 802 and a handle rod 801. The pressing block 802 is sleeved on the top of the first limiting member 301. When the pressing block 802 is pressed, the pressing block 802 drives the first limiting member 301 to move downward so that the first limiting member 301 is in the unlocked position. The handle rod 801 is an arc-shaped rod, and both ends of the handle rod 801 are fixed on the outer side wall of the kettle body 100. The handle rod 801 is used to facilitate the user to lift the kettle body 100.

[0049] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A kettlebell, characterized in that, Comprising: A kettle body (100) having an open cavity (101); A counterweight adjustment assembly including an adjustment member (201) and N counterweight members (202) stacked in sequence along a first direction. The open cavity (101) is used to accommodate the N counterweight members (202); the adjustment member (201) is movable relative to the kettle body (100), and the adjustment member (201) has M supporting portions (2011) spaced along the first direction, where N≥1 and 1≤M≤N; The adjustment member (201) is movable along a second direction to selectively connect j counterweight members (202) to the kettle body (100), and at least the jth supporting portion (2011) receives the jth counterweight member (202) at the jth counterweight selection position, where 1≤j≤M; The adjustment member (201) has an initial counterweight selection position where no counterweight member (202) is connected to the kettle body (100); A second-direction limiting structure having a locking position for limiting the adjustment member (201) in the second direction and an unlocking position for releasing the limitation of the adjustment member (201) in the second direction.

2. The kettlebell according to claim 1, characterized in that, Each counterweight member (202) is provided with a through hole (2021), and a to-be-supported portion (2022) is provided on the inner side wall of each through hole (2021). The N through holes (2021) enclose a hollow cavity (203). The hollow cavity (203) has a reference plane (204), and the distances between the N to-be-supported portions (2022) and the reference plane (204) increase in a gradient along the first direction; The M supporting portions (2011) are all located in the hollow cavity (203); At the jth counterweight selection position, at least the jth supporting portion (2011) abuts against the jth to-be-supported portion (2022).

3. The kettlebell according to claim 2, characterized in that, Each counterweight member (202) is provided with a plugging portion (2023) and a plugging groove (2024), and the (i + 1)th plugging portion (2023) is plugged into the ith plugging groove (2024), where 1≤i≤N - 1.

4. The kettlebell according to any one of claims 1-3, characterized in that, Further comprising: A first support seat (401) located in the open cavity (101) and fixedly connected to the inner wall of the open cavity (101). A first sliding hole (4011) is provided on the first support seat (401), and the extending direction of the first sliding hole (4011) is the second direction; A first slider (402) slidably connected to the first sliding hole (4011) and fixedly connected to the adjustment member (201); A second slider (403). A second sliding hole (102) is provided on the kettle body (100). The second slider (403) is slidably connected to the second sliding hole (102), and the second slider (403) passes through the second sliding hole (102) and is fixedly connected to the first slider (402); The second slider (403) slides along the extending direction of the second sliding hole (102) and drives the adjustment member (201) to move along the second direction to switch different counterweight selection positions.

5. The kettlebell according to claim 4, characterized in that The second-direction limiting structure includes: The first limiting member (301) is slidably connected to the second slider (403), and the first limiting member (301) has a first clamping portion (3011); A plurality of first clamping grooves (103) are formed in the second sliding hole (102), and the plurality of first clamping grooves (103) are spaced along the second direction; The first clamping portion (3011) has a locking position where it is inserted into one of the first clamping grooves (103), and the first clamping groove (103) limits the first clamping portion (3011) in the second direction, and an unlocking position where the first clamping portion (3011) is disengaged from the first clamping groove (103); The first limiting member (301) moves along the first direction to switch between the locking position and the unlocking position.

6. The kettlebell according to claim 5, wherein The second direction limiting structure further includes: A second limiting member (302) is slidably connected to the first slider (402), and the second limiting member (302) has a second clamping portion (3021); A plurality of second clamping grooves (104) are provided on the inner wall of the open cavity (101), and the plurality of second clamping grooves (104) are connected end to end in sequence along the second direction; An elastic member (303) is connected to the second limiting member (302) and the first slider (402) respectively, and the elastic member (303) has an initial elastic force for driving the second clamping portion (3021) to be inserted into one of the second clamping grooves (104); The first limiting member (301) has a third clamping portion (3012). In the locking position, the third clamping portion (3012) abuts against the second limiting member (302) to limit the second clamping portion (3021); in the unlocking position, the third clamping portion (3012) is separated from the second limiting member (302), and the first slider (402) can move along the second direction and drive the second clamping portion (3021) to move into an adjacent second clamping groove (104).

7. The kettlebell according to claim 1 or 6, characterized in that, It further includes: A base (500), the weight members (202) stacked in sequence are placed on the base (500), the base (500) has a first protrusion (501), and the first protrusion (501) is inserted into the Nth insertion groove (2024).

8. The kettlebell according to claim 7, wherein The base (500) further has a second protrusion (502) and a third protrusion (503), the kettle body (100) has a first slot (105) and a second slot (106), the second protrusion (502) is used for inserting into the first slot (105), and the third protrusion (503) is used for inserting into the second slot (106).

9. The kettlebell according to claim 1 or 8, characterized in that, It further includes a buffer pad (600) disposed between the weight member (202) and the inner wall of the open cavity (101).

10. The kettlebell according to claim 1 or 8, characterized in that, It further includes a restraint ring (700), and the restraint ring (700) is sleeved on the outer periphery of the kettle body (100).

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