Patent ID: 12233306

Description of reference numerals:1-base;11—second limiting protrusion;12—limiting strip;13—abutting column;2—counterweight;20—L-shaped groove;21—hitching lip;22—inserting opening;23—first limiting groove;24—first limiting protrusion;25—transverse groove;26—vertical groove;3—lifting base;30—upper shell;301—fourth sliding groove;302—scale label;31—grip;311—grip tube;32—main frame;321—top plate;322—lower frame;323—connecting metal sheet;324—first sliding groove;325—second sliding groove;326—positioning hole;327—first gear mounting hole;328—locking block limiting plate;33—lower shell;330—lower shell outer edge;331—limiting cover;332—third sliding groove;333—second limiting groove;334—mounting groove;335—through hole;34—first adjusting member;340—first transverse plate;341—driving rack;342—first vertical plate;343—first load-bearing block;344—first limiting key;345—ball;35—second adjusting member;350—second transverse plate;351—driven rack;352—second vertical plate;353—second load-bearing block;354—second limiting key;36—gear;37—adjusting knob;38—locking strip;381—locking groove;39—blocking sheet;391—second gear mounting hole;392—adjusting knob sliding groove;40—locking block;400—clamping section;401—unlocking groove;402—spring; and403—abutting end.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present invention is described in detail below with reference to the accompanying drawings and embodiments. Each example is provided to explain the present invention instead of limiting the present invention. In fact, those skilled in the art will know that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as one part of one embodiment may be applied to another embodiment to generate yet another embodiment. Therefore, it is expected that the present invention includes such modifications and variations that fall within the scope of the appended claims and equivalents thereof.

In the descriptions of the present invention, the orientations or positional relationships indicated by the terms “longitudinal”, “transverse”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom” and the like are orientations or positional relationships based on the drawings, are only for the purpose of facilitating describing of the present invention, and do not indicate that the present invention must be constructed and operated in the specific orientations. Therefore, they cannot be understood as limitations on the present invention. The terms “connection”, “connecting” and “arrangement” used in the present invention should be understood in a broad sense, for example, the connection may be fixed connection, and may also be detachable connection; the connection may be direct connection, and may also be indirect connection by means of intermediate components; the connection may be wired electrical connection and wireless electrical connection, and may also be wireless communication signal connection; and for those of ordinary skill in the art, the specific meanings of the above-mentioned terms can be understood according to the specific situations.

The accompanying drawings show one or a plurality of examples of the present invention. Numeral and letter marks are used in the detailed descriptions to refer to the features in the accompanying drawings. Similar or like marks in the accompanying drawings and the descriptions have been used to refer to similar or like parts of the present invention. As used herein, the terms “first”, “second”, “third” and the like are used interchangeably so as to distinguish one component from another, and are not intended to indicate the positions or the importance of the individual components.

As shown inFIGS.1-13, according to an embodiment of the present invention, a kettlebell is provided and includes a base1, wherein an accommodating space is formed on an upper surface of the base1, and six counterweights2and a lifting base3for fixing and lifting the counterweights2are vertically stacked inside the accommodating space.

Two opposite side walls of each of the counterweights2are provided with L-shaped grooves20, a groove corresponding to one edge of each of the L-shaped grooves20forms an open groove at the junction of a bottom surface and a side surface of the counterweight2, then hitching lips21protruding outwards are formed at the positions of two side edges of the counterweight2that are located above the L-shaped grooves20, a groove corresponding to the other edge of each of the L-shaped grooves20forms an inserting opening22at a top surface of the counterweight2, and the inserting openings22penetrate through the top surface and the bottom surface of the counterweight2. The six counterweights2are sequentially stacked together from top to bottom, the widths of the inserting openings22of the counterweights2are sequentially increased by a distance D, and correspondingly, the lengths of the hitching lips21are sequentially reduced by the distance D. The L-shaped grooves20on the two side walls of each of the counterweights2are centrosymmetric relative to the center point of the upper surface of the counterweight2. The lifting base3is internally provided with an adjusting assembly, the adjusting assembly includes a plurality of first load-bearing blocks343and second load-bearing blocks353which are respectively arranged from top to bottom and correspond to the hitching lips21on the two sides of the counterweights2, the first load-bearing blocks343and the second load-bearing blocks353are respectively inserted into the corresponding L-shaped grooves20from the corresponding inserting openings22, and when the first load-bearing blocks343and the second load-bearing blocks353respectively move towards the corresponding hitching lips21, one hitched counterweight2is added to the adjusting assembly every time said blocks move by the distance D.

Further, the two opposite side walls of each of the counterweights2may also be provided with T-shaped grooves, transverse grooves25are formed in the middles of the side surfaces of the counterweight2, the side surfaces, the top surface and the bottom surface of the counterweight2are put through to form vertical grooves26, the transverse grooves25are perpendicular to and in communication with the vertical grooves26, then the hitching lips are formed above the transverse grooves25of the counterweight2, and the vertical grooves26of the counterweight2form the inserting openings.

The lifting base3includes an upper shell30, wherein a grip31is arranged at the top end of the upper shell30and is configured to be held by a user for training; and a main frame32is mounted inside the upper shell30, the grip31internally includes a grip tube311, and a connecting end of the grip tube311is fixedly connected to the top of the main frame32. A lower shell33is arranged at the lower end of the upper shell30, and the lower shell33is fixedly connected to the main frame32.

As shown inFIG.11, the main frame32includes a top plate321, an annular lower frame322is arranged below the top plate321, a plate surface of the top plate321is perpendicular to an opening direction of the lower frame322, connecting metal sheets323are oppositely arranged on side edges of two sides of the top plate321, the upper end of each of the connecting metal sheets323is fixedly connected to the corresponding side edge of the top plate321, and the lower ends of the two connecting metal sheets323are fixedly connected to an outer ring edge of the lower frame322respectively, so that the accommodating space enclosed by the top plate321, the lower frame322and the two connecting metal sheets323is formed in the middle of the main frame32.

As shown inFIG.5, the lower shell33includes a lower shell outer edge330, the lower shell outer edge330is a shell having openings at both upper and lower ends, and the caliber of the opening at the upper end is greater than that of the opening at the lower end. The lower shell33further includes a limiting cover331having a downward opening, and the opening at the lower end of the limiting cover331is connected to the opening at the lower end of the lower shell33such that the lower shell outer edge330is integrated with the limiting cover331. The limiting cover331of the lower shell33enters the accommodating space inside the main frame32via the opening of the lower frame322at the lower end of the main frame32, then the top surface of the limiting cover331is fixedly connected to the top plate321, at the same time, the lower frame322of the main frame32is arranged between the limiting cover331and the lower shell outer edge330, and the lower frame322is fixedly connected to the lower shell outer edge330.FIG.12is a structure diagram of the main frame32and the lower shell33after fixed connection.

The adjusting assembly inside the lifting base3includes a first adjusting member34, a second adjusting member35and two gears36, and the first adjusting member34, the second adjusting member35and the two gears36form a gear-rack transmission mechanism. Specifically, the first adjusting member34includes a first transverse plate340and a first vertical plate342, and one end of the first transverse plate340is perpendicularly mounted at one end of the first vertical plate342, so that the first transverse plate340and the first vertical plate342are combined to form an inverted L-shape. A driving rack341is arranged at a free end of the first transverse plate340, the six first load-bearing blocks343are perpendicularly arranged on a plate surface of the first vertical plate342, and the first load-bearing blocks343and the first transverse plate340are located on the plate surface of the same side of the first vertical plate342. The second adjusting member35includes a second transverse plate350and a second vertical plate352, and one end of the second transverse plate350is perpendicularly mounted at one end of the second vertical plate352, so that the second transverse plate350and the second vertical plate352are combined to form an inverted L-shape. A driven rack351is arranged at a free end of the second transverse plate350, the six second load-bearing blocks353are perpendicularly arranged on a plate surface of the second vertical plate352, and the second load-bearing blocks353and the second transverse plate350are located on the plate surface of the same side of the second vertical plate352. The driving rack341is the same as the driven rack351in shape and size. Two first gear mounting holes327are formed in the upper surface of the top plate321, the two gears36are respectively mounted in the two first gear mounting holes327, and rotating shafts of the gears36can rotate inside the first gear mounting holes327. When the driving rack341and the driven rack351carry out transmission by means of the gears36, the driving rack341and the driven rack351have the opposite movement directions and the same movement distances. The first load-bearing blocks343on the first adjusting member34and the second load-bearing blocks353on the second adjusting member35respectively enter the corresponding L-shaped grooves20from the corresponding inserting openings22, and are simultaneously and respectively moved below the hitching lips21to be hitched to the hitching lips21. When the adjusting assembly hangs the counterweights2, the first load-bearing blocks343on the first adjusting member34and the second load-bearing blocks353on the second adjusting member35are respectively located below the hitching lips21on the two sides of the counterweights2, and when the adjusting assembly moves upwards, the counterweights2are lifted upwards at the same time.

As shown inFIG.12, the adjusting assembly is mounted on the upper surface of the top plate321of the main frame32, the first adjusting member34and the second adjusting member35slide on the top plate321synchronously in a limited manner, and the two gears36are rotatably mounted on the upper surface of the top plate321. Specifically, a first sliding groove324and a second sliding groove325which are parallel with each other are respectively formed in the upper surface of the top plate321, correspondingly, a first limiting key344matching with the first sliding groove324is arranged on a lower surface of the first transverse plate340of the first adjusting member34, and a second limiting key354matching with the second sliding groove325is arranged on a lower surface of the second transverse plate350of the second adjusting member35. When the first limiting key344and the second limiting key354are respectively and correspondingly mounted in the first sliding groove324and the second sliding groove325, the first adjusting member34and the second adjusting member35can be engaged with the gears36for transmission, and when the first adjusting member34slides in the first sliding groove324, the second adjusting member35slides in an opposite direction along the second sliding groove325.

Further, to make the adjustment distance of the adjusting assembly be D each time, six positioning holes326are sequentially and linearly formed in the top plate321of the main frame32at intervals of the distance D, and a connecting line of the centers of the six positioning holes326are parallel with lengthwise directions of the first sliding groove324and the second sliding groove325respectively. Correspondingly, a ball345is arranged on the lower surface of the first transverse plate340of the first adjusting member34, the diameter of the ball345is greater than the hole diameter of the positioning holes326, and when the first limiting key344of the first adjusting member34is located in the first sliding groove324, the ball345is located on the connecting line of the six positioning holes326. When the first limiting key344slides from one end inside the first sliding groove324to the other end, the ball345sequentially rolls through the six positioning holes326, and when the ball345rolls into the next positioning hole326from one positioning hole326, one hitched counterweight2is added to or removed from the adjusting assembly. When the first adjusting member34is moved and the ball345rolls into another positioning hole326from one positioning hole326, a clicking sound will be produced, and the user can have a corresponding hand feel, so that the user can adjust the gear conveniently and accurately.

In order to facilitate one-to-one correspondence of the positions of the inserting openings22of each of the counterweights2during placement of the counterweights2, four first limiting groove23are formed in the bottom of each of the counterweights, and correspondingly, except for the topmost counterweight2, four first limiting protrusions24are arranged at the positions of the top of each of the counterweights2corresponding to the four first limiting grooves23. When the first limiting grooves23of one counterweight2match with the first limiting protrusions24of the counterweight2below for mounting, the positions of the inserting openings22of the upper and lower counterweights2are in one-to-one correspondence with each other, and thus the first load-bearing blocks343and the second load-bearing blocks353pass through the inserting openings22conveniently. In addition, every time the first adjusting member34moves towards the hitching lips by the distance D, one hitched counterweight2is added to the adjusting assembly. On the contrary, every time the first adjusting member34moves in the opposite direction of the hitching lips by the distance D, one hitched counterweight2is removed from the adjusting assembly. Correspondingly, four second limiting protrusions11are arranged in the accommodating space on the upper surface of the base1, and the second limiting protrusions11correspond to the first limiting grooves23in position. The counterweights2can be stacked on the base1conveniently and stably, the lifting base3can conveniently cover the counterweights2inside, and the counterweights2that are not hitched can be prevented from toppling over and falling while convenient hitching is ensured.

Further, in order to ensure the stable fixing during the process that the lifting base3lifts the counterweights2upwards and to prevent the falling accident, the size of the limiting cover331of the lower shell33is set such that the shape and size of the accommodating space inside the limiting cover331match with the shape and size of the six counterweights2stacked together, thus the limiting cover331can easily cover the counterweights2, and the counterweights2can be prevented from falling when being lifted. Six third sliding grooves332are respectively formed at the positions of each of side walls of two sides of the limiting cover331corresponding to lower sides of the hitching lips21of the counterweights2, the third sliding grooves332are in communication with the interior of the limiting cover331, and when the first adjusting member34and the second adjusting member35are mounted on the top plate321, the first load-bearing blocks343and the second load-bearing blocks353can respectively pass through the corresponding third sliding grooves332and move inside the third sliding grooves332to be hitched to the hitching lips21.

Further, to stably fix the adjusting assembly on the top plate321, a blocking sheet39is arranged on the top plate321, and after the blocking sheet39limits the adjusting assembly between the top plate321and the blocking sheet39, the blocking sheet39is fixedly connected to the upper surface of the top plate321. Two second gear mounting holes391are formed at the positions of the blocking sheet39corresponding to the two first gear mounting holes327, and when the blocking sheet39is fixedly connected to the top plate321, the two ends of the gears36are respectively connected in a limited manner by means of the first gear mounting holes327and the second gear mounting holes391. Adjusting knob sliding grooves392are formed in the positions of the blocking sheet39corresponding to the upper side of the first adjusting member34, an adjusting knob37is arranged above the first adjusting member34, the bottom of the adjusting knob37penetrates through the adjusting knob sliding grooves392to be fixedly connected to the first adjusting member34, and thus the first adjusting member34can be conveniently moved above the blocking sheet39by means of the adjusting knob37.

Further, to prevent falling of the counterweights2due to movement of the adjusting assembly when the lifting base3is lifted upwards, a locking strip38is further arranged below the first vertical plate342of the first adjusting member34, five locking grooves381are formed in the locking strip38, and the distance between the center lines of every two adjacent locking grooves381is D. Correspondingly, a locking block40is arranged on the inner side of the lower frame322of the main frame32, the locking block40is provided with a clamping section400, the width of the clamping section400matches with the widths of the locking grooves381, and when the clamping section400is located in one of the locking grooves381, the locking strip38cannot move in the lengthwise direction. An unlocking groove401is formed below the clamping section400of the locking block40, and the size of the unlocking groove401in the vertical direction matches with the thickness of the locking strip38, so that the locking strip38can pass through the unlocking groove401to reciprocate. The locking or unlocking state of the locking strip38can be switched when the locking block40moves up and down. In the locking state, the clamping section400of the locking block40is located in one of the locking grooves381, the movement of the locking strip38is limited at this moment, that is, the movement of the first adjusting member34is limited, and the weight cannot be adjusted at this moment. When the locking block40moves upwards to make the unlocking groove401corresponds to the locking strip38, the locking strip38can pass through the unlocking groove401to reciprocate, then the first adjusting member34is unlimited and can move, and the weight can be adjusted at this moment. Correspondingly, a mounting groove334is formed in the lower end of the lower shell33and is configured to mount the locking block40, and the locking block40can move up and down inside the mounting groove334. An abutting end403with the cross sectional size reduced is arranged at the bottom end of the locking block40, correspondingly, a through hole matching with the abutting end403is formed in the bottom end of the mounting groove334, and the abutting end403is only allowed to penetrate through the through hole to move up and down. A locking block limiting plate328is arranged at the position on the inner side of the lower frame322of the main frame32corresponding to the mounting groove334, a spring402is further mounted at the top of the locking block40, one end of the spring402is fixedly connected to the locking block40, and the other end of the spring402abuts against the locking block limiting plate328. Correspondingly, an abutting column13is arranged at the position of the upper surface of the base1corresponding to the mounting groove334, when the lifting base3is placed on the base1, the lower end of the locking block40inside the mounting groove334of the lifting base3abuts against the abutting column13, the locking block40moves relatively upwards, the spring402is compressed at this moment, the unlocking groove401of the locking block40corresponds to the locking strip38, and the first adjusting member34can be moved and adjusted at this moment, that is, when the lifting base3is placed on the base1, the weight can be adjusted. When the lifting base3is lifted upwards, the contact between the locking block40and the abutting column13is removed, the locking block40moves downwards under the action of the restoring force of the spring402at this moment, the clamping section400of the locking block40is inserted into one of the locking grooves381of the locking strip38, and the first adjusting member34cannot be moved at this moment. The locking strip38, the locking block40and the abutting column13are arranged to ensure that the counterweights2cannot fall during the lifting process of the lifting base3. When the counterweights2are not hitched to the lifting base3, the locking block40is located at one end of the outer side of the locking strip38. When the locking block40moves relatively to the other end of the outer side of the locking strip38, the movement distance is 6D, and one movement distance D respectively corresponds to one weight adjustment gear. When the lifting base3is lifted upwards to leave the base1, the locking strip38matches with the locking block40to lock the corresponding weight gear.

Further, in order to facilitate the corresponding of the mounting groove334of the lifting base3to the abutting column13when the lifting base3is placed on the base1, two limiting strips12are further arranged on the upper surface of the base1, and the two limiting strips12are arranged oppositely. Correspondingly, two second limiting grooves333are formed at the positions of the bottom end of the lifting base3corresponding to the two limiting strips12, and the second limiting grooves333match with the limiting strips12to facilitate the accurate positioning when the lifting base3is placed on the base1.

Further, a fourth sliding groove301is formed at the position above the upper shell30of the lifting base3corresponding to the mounting position of the adjusting knob37on the main frame32, and when the upper shell30is mounted on the main frame32, the upper end of the adjusting knob37extends out of the fourth sliding groove301and slides inside the fourth sliding groove301to facilitate the adjustment. Scale labels302are respectively arranged on two sides of the fourth sliding groove301, the spacing distance between every two adjacent weight gears on each of the scale labels302is D, and each weight gear corresponds to one positioning hole326of the adjusting assembly. When the adjusting knob37moves by the distance D along the scale labels302, the six first load-bearing blocks343on the first adjusting member34move by the distance D along with the first adjusting member34, and at the same time, the second load-bearing blocks353move synchronously by the distance D in the opposite direction along with the second adjusting member35. Among the vertically stacked counterweights2, the difference between the lengths of the hitching lips21of every two adjacent counterweights2is D, and one hitched counterweight2can be added or removed when the adjusting knob37moves by the distance D, so that the hitching number of the counterweights2on the lifting base3can be achieved. In addition, the locking strip38at the lower end of the first adjusting member34moves by the distance D along with the first adjusting member34, and when the lifting base3is removed from the base1, the corresponding weight gear is locked by means of the locking strip38and the locking block40.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:1. the hitching lips21and the inserting openings22are provided on the two sides of the counterweights2, the inserting openings22and the hitching lips21of the counterweights2have the different widths, the adjusting assembly is arranged in the lifting base3, the plurality of first load-bearing blocks343and the plurality of second load-bearing blocks353corresponding to the hitching lips21are respectively arranged at the lower ends of the two sides of the adjusting assembly, and the different numbers of the counterweights2are hitched by means of moving the first load-bearing blocks343and the second load-bearing blocks353on the adjusting assembly, thereby adjusting the weight;2. the hitching lip21and the inserting opening22on one side edge of each of the counterweights2and the hitching lip21and the inserting opening22on the other side edge are centrosymmetric relative to the center point of the upper surface of the counterweight2; the adjusting assembly comprises the first adjusting member34and the second adjusting member35, the driving rack341and the driven rack351which are identical in size are respectively arranged at the ends of the first adjusting member34and the second adjusting member35, the driving rack341and the driven rack351are engaged with each other by means of the gears36for transmission, and when the first adjusting member34is moved, the first adjusting member34and the second adjusting member35drive the first load-bearing blocks343and the second load-bearing blocks353to move synchronously in opposite directions by the equal distances, thereby adjusting the weight; the hitching points on the two sides of each of the counterweights2are set to be centrosymmetric relative to the center point of the upper surface of the counterweight2, so that the hitched counterweights2can be more stable;3. the locking strip38is arranged at the lower end of the adjusting assembly, the locking block40is arranged at the position of the lower shell33corresponding to the locking strip38, the locking block40can slide up and down in the limited manner inside the lower shell33, the locking strip38is provided with the plurality of locking grooves381in the movement direction of the adjusting assembly, the clamping section400is arranged at the position of the locking block40corresponding to the locking grooves381, the adjusting assembly cannot be adjusted when the clamping section400is located inside one of the locking grooves381, the unlocking groove401is formed below the clamping section400, when the locking block40moves upwards to enable the unlocking groove401to correspond to one of the locking grooves381, the locking strip38is unlocked, that is, the adjusting assembly can be adjusted, and a locking assembly provided with the locking strip38and the locking block40can facilitate control on the movement of the adjusting assembly, thereby preventing falling of the counterweights2due to unintended touches when the adjustment is not needed; and4. the widths of the inserting openings22of the plurality of counterweights2from top to bottom are sequentially increased by the distance D, the lengths of the hitching lips21are sequentially reduced by the distance D, correspondingly, the plurality of positioning holes326are formed below the first adjusting member34, the spacing distance between every two adjacent positioning holes326is D, each of the positioning holes326corresponds to a weight gear, the ball345matching with the positioning holes326is arranged below the first adjusting member34, and the user can adjust the gear accurately by means of the sound generated between the ball345and the positioning holes326and the hand feel when adjusting the weight.

Compared with the prior art, the kettlebell in the present invention has the advantages that the mass can be adjusted conveniently and quickly, operations during the adjustment process are easy, and the phenomenon of falling of the counterweights during the use process can be avoided.

The above is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the present invention, and various changes and modifications may be made by those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present invention should fall within the scope of protection of the present invention.