TWM588011U - Kettlebell - Google Patents

Abstract

A kettle bell includes a base, a plurality of weight blocks, and a lifting seat. The base includes an adjustment module and an anti-rotation module. The weight blocks are stacked on the base, and each weight block has a shaft hole penetrating up and down. The lifting seat can be detachably placed on the base, and the anti-rotation module is driven to change from a limited rotation state that prevents the adjustment module from being operated to an active state that makes the adjustment module available for operation. The lifting seat includes a combination module, and the combination module has several combination pieces corresponding to the weight blocks respectively, and can be driven and rotated by the adjustment module when the adjustment module is operated to adjust each combination The piece is combined or disengaged with the corresponding weight block, and the weight of the weight block connected to the lifting seat is adjusted.

Description

Kettlebell

The invention relates to a fitness equipment, in particular to a kettle bell.

Kettlebell is a kind of fitness equipment for users to take out with their hands and swing. Common kettlebells are integrally formed of cast iron, so users want to choose kettlebells with different weights for different training intensities, and can only buy a variety of kettlebells with different weights, which is not only costly, but also not easy to store.

Taiwan Patent I598131 discloses a kettlebell with adjustable weight, comprising a kettlebell body with a weight hole, a plurality of weight blocks capable of being accommodated in the weight hole, and a kettlebell body mounted on the kettlebell body. Adjustment unit. Each counterweight has a through slot. The adjusting unit has a shaft rod, a plurality of receiving rods penetrating through the shaft rod and corresponding to the weight blocks, and a plate rod pivotally connected to the upper end of the shaft rod. The user can drive the shaft by operating the lever. When the shaft is rotated to a predetermined angle, part of the receiving rod will be located in the slot position of the corresponding weight block, so that the corresponding The weight block can be detached from the kettlebell body, and the other receiving rods are located in the non-groove position of the corresponding weight block, so that other corresponding weight blocks can be fixed in the kettlebell body, thereby The number of combinations of the kettlebell body and the weight blocks can be adjusted, thereby adjusting the weight of the kettlebell.

Although the kettlebell can adjust the weight of the kettlebell by the adjustment unit, the adjustment unit is provided on the kettlebell body. Therefore, when the kettlebell body is lifted and used, the adjustment unit may It is driven by shaking, collision, or user's wrong operation, and then the weight blocks are detached from the kettlebell body and dropped down, which is quite dangerous.

The object of the present invention is to provide a kettle bell capable of overcoming at least one of the disadvantages of the prior art.

Therefore, the new kettlebell includes a base, several weights, and a lifting seat. The base includes a base body, an adjustment module provided in the base body, and an anti-rotation module provided in the base body. The anti-rotation module can be driven to be connected with the adjustment module. A limited rotation state that prevents the adjustment module from being operated, and a movable state that allows the adjustment module to operate without the adjustment module; the weights are stacked on the base body, each The weight block has a shaft hole penetrating up and down; the lifting seat can be detachably placed on the base body to drive the anti-rotation module to change from the restricted rotation state to the active state, and the lifting seat includes a detachable combination A combination module of the adjustment module, the combination module has a plurality of combination pieces respectively located under the weights, and the combination module can be driven and rotated by the adjustment module when the adjustment module is operated While driving each coupling member in a disengagement position that can be axially displaced upward through the shaft hole of the respective weight block, and a card that cannot be clamped to the weight block upward through the shaft hole. Variations between positions.

The effect of the new model is that the structural design of the adjustment module for adjusting the combination relationship between the combination module and the weights is provided on the base structure, so that the user can lift the seat away from the base and use it. At this time, the combination module will be separated from the adjustment module and cannot be adjusted again, which can ensure that the combination relationship between the seat and the weight blocks connected to it cannot be changed during use, thereby improving the safety of use.

Referring to FIGS. 1, 2 and 3, an embodiment of the new kettle bell includes a base 1, six weight blocks 2, and a lifting seat 3.

The base 1 includes a base body 11 with an accommodation space, an adjustment module 12 disposed in the base body 11, and an anti-rotation module 13 disposed in the base body 11. The adjustment module 12 has a knob 121 pivotally connected to the outer surface of the base body 11 and rotatable relative to the base body 11, a gear set 122 housed in the accommodation space and connected to the knob 121, a A driving mechanism 123 connected to the gear set 122, a positioning mechanism 124 provided between the driving mechanism 123 and the gear set 122, two positioning beads 125 provided between the positioning mechanism 124 and the gear set 122, and Two positioning elastic members 126 are disposed between the base body 11 and the positioning mechanism 124. The knob 121 is provided with different weight indications.

The gear set 122 has a plurality of gears connected between the knob 121 and the driving mechanism 123. Among them, the gear 14 for connecting the driving mechanism 123 has a plurality of recesses arranged on the top side and arranged around its axis. In the positioning slot 140, the knob 121 can be operated to drive the gear set 122 to rotate the driving mechanism 123 relative to the base body 11. Because the combination of gear connections is diverse, the implementation is not limited to this.

With reference to FIG. 4, the driving mechanism 123 has a driving body portion 410 that is clamped on the gear 14 and can be driven to rotate, two protruding post portions 420 protruding from the top surface of the driving body portion 410, and Two card beads 430. Each protruding post portion 420 is provided with a post slot 421 opening downward, and a first latching hole 422 penetrating radially through the sidewall surface of the protruding post portion 420 and communicating with the post slot 421. The card beads 430 are respectively disposed in the column grooves 421, and can be partially inserted into and protrude from the first card holes 422.

The positioning mechanism 124 has a movable member 510 which is sleeved under the driving body portion 410 so as to be vertically displaceable, and a positioning plate 520 disposed between the movable member 510 and the gear 14. The movable member 510 has a sleeve. The movable member body portion 511 connected to the driving body portion 410 and stacked on the positioning plate 520, and two guide pillars protruding upward from the movable member body portion 511 and inserted into the column grooves 421, respectively. The top side of each of the guiding post portions 512 has a guiding surface 513 extending up and down obliquely facing the first engaging hole 422 and abutting against the respective engaging bead 430. The positioning plate 520 has a positioning plate body 521 on which the movable body body portion 511 is stacked, and two ear portions 522 extending radially outward from the positioning plate body 521.

The positioning beads 125 are received in the positioning grooves 140 of the gear 14 connected to the driving mechanism 123, and respectively support the ears 522 upward. The positioning elastic members 126 elastically abut against the ear portions 522 and the base body 11. Each positioning bead 125, the corresponding elastic member 126 for positioning and the corresponding ear part 522 are limited by a limiting structure (not shown) on the inner surface of the base body 11, and cannot be horizontally displaced relative to the base body 11. . Since there are many types of structures for limiting the positioning beads 125, the positioning elastic members 126, and the ears 522, they will not be described in detail.

Referring to FIGS. 3 and 5, the anti-rotation module 13 has an anti-rotation piece 131 disposed in the base body 11 and partially protruding from the base body 11, and two anti-rotation elastic members 132. The anti-rotation piece 131 has a central portion 133 for the adjustment module 12 to pass downward, two arm portions 134 extending from the central portion 133 to two opposite sides of the base body 11, and two arms from the arms, respectively. The extending end of the portion 134 protrudes upward from the top surface of the base body 11 and two convex portions 135 protruding downward from the bottom surface of the arm portions 134 and can be detachably engaged with the connecting body 410. The engaging portion 136 in the tooth groove 141 of the gear 14. The anti-rotation elastic members 132 are disposed below the convex portions 135 and the base body 11.

Referring to FIGS. 2 and 13, the weight blocks 2 are stacked on the base body 11, and each weight block 2 has a shaft hole 20 penetrating vertically. The shaft hole 20 of each weight block 2 has a central region 201 and two through-slot regions 202 that radially and symmetrically communicate with the central region 201 in the radial direction. In the slotted area 202, the horizontally extending width of the slotted areas 202 in the lower layer is greater than the horizontally extended width of the slotted areas 202 in the upper layer, that is, the The horizontal extension of the slotted area 202 is the largest, and the horizontal extension of the slotted areas 202 located at the uppermost layer is the smallest.

Referring to FIGS. 2, 6 and 11, the seat 3 includes a housing portion 31 detachably placed on the base body 11, and a grip portion 32 connected to the housing portion 31 and held by a user. And a coupling module 33 disposed in the housing portion 31 and detachably combined with the driving body portion 410. The housing portion 31 defines a weight space 310 for receiving the weights 2.

The combination module 33 has a shaft unit 331 that can be penetrated through the shaft holes 20 and can be driven to rotate by the driving body portion 410, and six shaft shafts 331 are radially passed through the shaft unit 331 and correspond to the shafts. The coupling member 332 of the weight block 2, an anti-rotation disk 334 fixed to the housing portion 31 and coaxially rotatably inserted by the shaft unit 331, and a radial penetration through the shaft unit 331 and located in the anti-rotation A safety pin 333 above the turntable 334 and a coupling elastic member 335 provided between the top side of the shaft unit 331 and the housing portion 31.

The shaft unit 331 can pass through the central regions 201 of the shaft holes 20, and has a shaft sleeve 35 extending up and down, and a shaft 34 capable of passing through the shaft sleeve 35 with relative displacement up and down. The shaft 34 is radially provided with six first elongated slotted holes 341 arranged axially spaced apart and extending axially, and a circular hole-shaped first through hole 342 spaced above the first elongated slotted holes 341, and Two insertion slots 343 (only one of which is shown in the figure) are provided for the protruding portions 420 (see FIG. 3) of the driving mechanism 123 to engage the card. The shaft sleeve 35 has six second through holes 351 that pass through in the radial direction and correspond to the first long slot holes 341 respectively, and a second length that passes through the axial direction and corresponds to the first through holes 342. The slot hole 352 and two second latching holes 353 (only one is shown in the figure) that communicate with the recessed slots 343 respectively.

Each coupling member 332 is coupled to the shaft unit 331 through the corresponding first long slot hole 341 and the second perforation 351, and two end portions protruding radially outside the shaft sleeve 35 can be on the shaft When the rod unit 331 passes through the central regions 201 of the shaft holes 20, it passes through the corresponding slotted regions 202 respectively. The coupling members 332 can be driven by the shaft unit 331 and rotate relative to the weights 2 at the same time, so that each coupling member 332 can be axially displaced through the weights of the respective weights 2 The disengagement position of the slotted area 202 and an engagement position of the weight block 2 which cannot be upwardly passed through the shaft hole 20 upwardly are changed.

The safety pin 333 passes through the first through hole 342 and the second long slotted hole 352 and is combined with the shaft unit 331. The top surface of the anti-rotation disc 334 is recessed with a plurality of card slots 301 arranged at intervals around the shaft sleeve 35, and the safety pin 333 can be embedded in the card slots 301.

Referring to FIGS. 7 and 8, the anti-rotation module 13 can be driven to switch between a limited-rotation state (FIG. 7) and an active state (FIG. 8). When the anti-rotation module 13 is in the limited-rotation state, The convex portions 135 are pushed upward by the anti-rotation elastic member 132 to protrude from the top surface of the base body 11, and the arm portions 134 are driven to drive the latching portions 136 to embed the gears connected to the driving body portion upward. The two tooth grooves 141 of 14 make the adjustment module 12 inoperable by the user. When the lifting seat 3 is placed on the base body 11, as shown in FIG. 8, the housing portion 31 will push down against the convex portions 135, so that the anti-rotation module 13 is switched from the rotation-restricted state to In this active state, at this time, the convex portions 135 are retracted downward into the base body 11, and the arm portions 134 are driven to move the card insertion portions 136 downward to disengage from the tooth grooves 141, so that the adjustment module 12 Can be operated by users. At the same time, the convex portions 135 respectively compress the anti-rotation elastic members 132 and accumulate an elastic force. When the housing portion 31 is disengaged from the convex portions 135, it can push up against the convex portions 135 to drive the anti-rotation. The conversion module 13 is switched to the rotation-restricted state.

Referring to Figs. 3, 9, and 10, the positioning mechanism 124 can be switched between a disengaged state (Fig. 9) and a coupled state (Fig. 10). When the positioning mechanism 124 is in the disengaged state, the positioning beads 125 are respectively received in the positioning grooves 140, and the positioning disk 520 is pushed down by the positioning elastic members 126. At this time, the card beads 430 only abuts against the guide surfaces 513 respectively, and does not protrude from the convex portions 420 from the first card holes 422, so it is not embedded in the second card holes of the shaft sleeve 35 In 353, the shaft unit 331 can be further displaced upward from the driving mechanism 123.

When the knob 121 is operated and the gear set 122 is driven, the positioning beads 125 will be driven upward by the gear 14 to move away from the positioning slots 140 originally accommodated, and the positioning beads 125 will be respectively upward. The ears 522 of the positioning plate 520 are pushed, and the positioning elastic members 126 are compressed. At the same time, the positioning plate 520 that is driven to move up simultaneously drives the movable member 510 to move relative to the driving body portion 410. So that the guide surfaces 513 of the movable member 510 are pushed upward and outward against the card beads 430, respectively, so that the card beads 430 protrude from the first card holes 422, respectively, and are partially embedded in the shaft sleeve The second clamping holes 353 of 35 prevent the shaft unit 331 from being upwardly disengaged from the rotating body portion 410. At this time, the positioning mechanism 124 has been switched from the disengaged state to the coupled state. When the knob 121 is continuously turned to drive the gear set 122, the positioning beads 125 will be embedded in the other two positioning grooves 140 again. At this time, the reset elastic force of the positioning elastic members 126 will be pushed down against the positioning beads 125. The ear portion 522 causes the positioning mechanism 124 to switch from the coupled state to the disengaged state again.

Referring to FIGS. 6, 11 and 12, the safety pin 333 can be driven by the upper and lower displacements of the shaft 34, and can be displaced up and down in a locked position (FIG. 11) and a loose position (FIG. 12) relative to the anti-rotation disk 334. . When the safety pin 333 is in the card turning position, two ends of the safety pin 333 are respectively engaged with the two card slots 301 of the anti-rotation disc 334, so that the shaft unit 331 cannot be opposite to the housing portion 31. Spin. When the shaft unit 331 is combined with the driving mechanism 123, the shaft 34 is pushed up by the driving mechanism 123 and is displaced upward with respect to the shaft sleeve 35, and then the safety pin 333 is linked with the anti-rotation disk 334. Displace upward and move away from the slot 301 to move to the loose position. At this time, the shaft unit 331 can be driven by the driving mechanism 123 to rotate relative to the housing portion 31, and the elastic member for combining 335 will be pushed up and compressed by the shaft 34, and a downward resetting elastic force is accumulated. When the shaft unit 331 is driven upward to disengage from the driving mechanism 123, the combined elastic member 335 will drive the shaft 34 to move downward relative to the shaft sleeve 35, so that the shaft 34 drives the safety pin 333. The card is positioned downward in two of the card slots 301 again, and the safety pin 333 changes to the card rotation position again. The safety pin 333 can be moved to the locked position after the shaft unit 331 is released from the driving mechanism 123.

Referring to FIGS. 2, 8 and 12, in the present embodiment, when using the weight blocks 2, they are stacked on the base 1, and the lifting seat 3 is set down outside the weight blocks 2 to communicate with the weight block 2. The combination of the base 1 drives the anti-rotation module 13 to the active state, and the safety pin 333 moves to the loose position. At this time, the user can turn the knob 121 to the required position by operating the knob 121 The counterweight indicates that when the knob 121 is turned, the driving mechanism 123 is driven to rotate at the same time, and the shaft unit 331 is driven to drive each coupling member 332 to change between the disengaged position and the snapped position to correspond to the knob 121. The weight indicates the number of weight blocks 2 to be combined.

Refer to FIG. 13. Taking the combination module 33 and the two weights 2 as an example, the user can rotate the knob 121 to drive the coupling members 332 to rotate to a specific angle, so that the two uppermost coupling members are located. 332 is unable to pass through the positions of the shaft holes 20 of the corresponding weight blocks 2, as shown in (a) and (b) of FIG. 13, and the other four coupling members 332 are positioned to pass through the corresponding The positions of the slotted area 202 are shown in (c), (d), (e), and (f) of FIG. 13.

After the user completes the weight adjustment, the handle 3 is lifted by the grip portion 32. At this time, the combination module 33 is combined with the two top weight pieces 2 to drive the two weight pieces 2 upward. At the same time, the safety pin 333 will move to the locking position, so that the shaft unit 331 cannot rotate relative to the housing seat 31, and the coupling members 332 can be prevented from disengaging from the combined weights 2, The anti-rotation module 13 is also switched to the rotation-restricted state, so that the adjustment module 12 is positioned at the weight instruction position originally set.

When the user wants to adjust the weight of other counterweights, first put the lifting seat 3 back on the base body 11 to switch the anti-rotation module 13 to the active state, and at the same time, the driving mechanism 123 moves the shaft upward. 34, the safety pin 333 is released from the card slots 301 and moved to the loose position, and then the relative position of the coupling members 332 and the shaft holes 20 can be adjusted by driving the knob 121 to select Combine the required number of weight blocks 2.

In summary, the effect of the new kettlebell is that the user can operate the adjustment module 12 provided on the base body 11 to change the connection relationship between the combination module 33 and the weights 2 and When the lifting seat 2 is lifted, the combination module 33 is separated from the adjustment module 12, and the design of the safety pin 333 ensures that the combination module 33 cannot be adjusted, so that the lifting seat 3 and the weights 2 is a stable combination, and will not be separated due to misoperation or other shaking; the positioning mechanism 124 ensures that each time the operation of the adjustment module 12 drives the shaft unit 331, the distance between the coupling pieces 332 and the shaft hole 20 The relative position is correct; when the anti-rotation module 13 enables the adjustment module 12 to be separated from the combination module 33, it is positioned at the originally set weight indication position, so that the knob 121 displays the The counterweight indication corresponds to the number of counterweight blocks 2 coupled to the lifting base 3, and therefore, the purpose of the present invention can be achieved.

However, the above are only examples of the new model. When the scope of implementation of the new model cannot be limited by this, any simple equivalent changes and modifications made in accordance with the scope of the patent application of the new model and the content of the patent specification are still Within the scope of this new patent.

1‧‧‧ base

11‧‧‧ base body

12‧‧‧ adjustment module

121‧‧‧ knob

122‧‧‧Gear Set

123‧‧‧Driving agency

124‧‧‧ Positioning agency

125‧‧‧ positioning beads

126‧‧‧Positioning elastic member

13‧‧‧Anti-rotation module

131‧‧‧Anti-rotation film

132‧‧‧Anti-rotation elastic

133‧‧‧ Central

134‧‧‧arm

135‧‧‧ convex

136‧‧‧Embedded card section

14‧‧‧ Gear

140‧‧‧ positioning groove

141‧‧‧Groove

2‧‧‧ counterweight

20‧‧‧ Shaft hole

201‧‧‧ Chuo

202‧‧‧ trough area

3‧‧‧Lift

301‧‧‧card slot

31‧‧‧shell

310‧‧‧ counterweight space

32‧‧‧ Grip Department

33‧‧‧Combination module

331‧‧‧shaft unit

332‧‧‧Combination

333‧‧‧Safety Pin

334‧‧‧Anti-turntable

335‧‧‧Combined elastic parts

34‧‧‧ shaft

341‧‧‧The first long slot

342‧‧‧first perforation

343‧‧‧Recess

35‧‧‧ shaft sleeve

351‧‧‧second perforation

352‧‧‧Second long slot

353‧‧‧Second Card Hole

410‧‧‧Driving the main body

420‧‧‧ convex post

421‧‧‧Column slot

422‧‧‧First card hole

430‧‧‧ card beads

510‧‧‧Event

511‧‧‧movable body body

512‧‧‧Guiding Post

513‧‧‧Guide plane

520‧‧‧Positioning plate

521‧‧‧Positioning plate body

522‧‧‧ear

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which:
Figure 1 is a perspective view of an embodiment of the novel kettle bell;
FIG. 2 is an exploded perspective view of the embodiment; FIG.
3 is an exploded perspective view of a base of the embodiment;
4 is a sectional view of the base of the embodiment;
5 is a cross-sectional view of the base of the embodiment from another perspective;
6 is an exploded perspective view of a seat of the embodiment;
7 is an incomplete cross-sectional view of the embodiment, illustrating that when the lifting base is lifted up from the base, an anti-rotation module is in a restricted rotation state;
8 is a view similar to FIG. 7, illustrating that the anti-rotation module is in an active state when the lifting seat is combined with the base;
9 is an incomplete cross-sectional view of the embodiment, illustrating a positioning mechanism in a disengaged state;
10 is a view similar to FIG. 9, illustrating the positioning mechanism in a combined state;
11 is an incomplete cross-sectional view of the seat, illustrating a safety pin in a click position;
FIG. 12 is an incomplete cross-sectional view of the embodiment, illustrating that the safety pin is in a loose position when the lifting seat is combined with the base; and FIG. 13 is a schematic diagram of the embodiment, illustrating several coupling members and corresponding The relative positional relationship of several shaft holes, where (a) ~ (f) respectively correspond to the shaft holes and the joints arranged from top to bottom.

Claims (14)

A kettle bell includes: a base, including a base body, an adjustment module provided in the base body, and an anti-rotation module provided in the base body. The anti-rotation module can be driven to A limited rotation state that is connected to the adjustment module so that the adjustment module cannot be operated, and an active state that is separated from the adjustment module and makes the adjustment module available for operation; several weight blocks stacked on top of each other On the base body, each weight block has a shaft hole penetrating up and down; and a lifting seat can be detachably placed on the base body to drive the anti-rotation module to change from the rotation-restricted state to the active state. The lifting seat includes a combination module detachably coupled to the adjustment module, and the combination module has a plurality of connection members respectively located under the weight blocks, and the combination module can be connected to the adjustment module. When being operated, it is driven to rotate by the adjustment module, which drives each coupling member in a disengagement position that can be axially displaced upward through the shaft hole of the respective weight block, and one that cannot go up through the shaft hole. The upper card is connected to the weight block Card arrived between the position change. The kettlebell according to claim 1, wherein the anti-rotation module has a part of an anti-rotation piece protruding outward from the base body, and at least one anti-rotation elastic member provided between the anti-rotation piece and the base body , The anti-rotation piece can be pushed down by the lifting seat placed on the base body to switch the anti-rotation module to the active state, and the at least one anti-rotation elastic member always has an elastic upward push on the The anti-rotation sheet makes the anti-rotation module move to the restricted rotation state. The kettle bell according to claim 2, wherein the anti-rotation piece has a central portion for the adjustment module to pass downward, at least one arm portion extending from the central portion to the periphery of the base body, and the number corresponding At least one arm portion and a protruding portion protruding upward from the top end of the base body upward from the extending end of the at least one arm portion, and a number corresponding to the at least one arm portion and protruding downward from the bottom surface of the at least one arm portion and capable of protruding downward The off-ground card abuts against the card-embedded portion of the adjustment module, and when the anti-rotation module is switched from the rotation-restricted state to the active state, the at least one convex portion is pushed down by the seat to drive the at least An engaging portion is released from the adjustment module. The kettlebell according to claim 3, wherein the anti-rotation piece has two arms extending from two opposite sides of the central portion toward the periphery of the base body, and two extending upwards from the extending ends of the arms, respectively. A convex portion protruding from the top surface of the base body, and two card insertion portions respectively protruding downward from the bottom surface of the arm portions. The kettle bell according to claim 2, wherein the adjustment module has a knob mounted on the base body and rotatable relative to the base body, a gear set connected to the knob, and a gear set connected to the gear set and connected to The coupling module can be disengaged from the grounding driving mechanism. The knob can be operated to drive the gear set to rotate the driving mechanism relative to the base body. When the driving mechanism is driven, it will drive the locking mechanism. In combination with the rotation of the module, when the anti-rotation module is in the restricted rotation state, the anti-rotation piece is embedded in the gear set so that the knob cannot be operated. The kettlebell according to claim 5, wherein the gear set has a plurality of gears, and one of the gears is connected to the driving mechanism, and has a plurality of recesses arranged on the top side and arranged around its axis. A positioning slot, the adjusting module also has a positioning mechanism disposed between the driving mechanism and the gear set, and at least one detachably engages downwardly in one of the positioning slots and is topped by a horizontal displacement limit Against the positioning beads of the positioning mechanism, the positioning mechanism can switch between a combined state where the driving mechanism is combined with the coupling module, and a disengaged state which enables the combined module to disengage from the driving mechanism; when operating the When the knob drives the gear set to rotate, the at least one positioning bead will move from the positioning slot originally accommodated to the adjacent positioning slot, and the positioning mechanism will move the at least one positioning bead between the two adjacent positioning slots. The at least one positioning bead is pushed upward for a while to switch to the combined state. The kettle bell according to claim 6, wherein the combination module has at least one recessed slot, and a number of second card holes corresponding to the at least one recessed slot and communicating with the at least one recessed slot, and the driving mechanism has an embedded slot. The number of the driving body part which is clamped on the gear set and can rotate with the gear set corresponds to at least one recessed groove, and the protrusion extends upward from the driving body part and is detachably passed through the at least one recessed protrusion And at least one protruding bead corresponding to at least one protruding post portion, the at least one protruding post portion defining an axially extending and downwardly-opening column groove, and a first communicating with the column groove and the at least one second card hole. A card hole, the at least one card bead is received in the at least one column groove, the positioning mechanism has a movable member which can be vertically displaced below the driving body portion, and a movable member which is assembled with the movable member and the Between the gear sets, the positioning plate abuts against the positioning bead. The movable member has a number of guide post portions corresponding to at least one post slot and inserted upwardly through the at least one post slot. The at least one guide post portion. The top side has an upwardly and downwardly extending surface facing the first card hole and abutting against the at least A bead guide surface. When the positioning mechanism is in the combined state, the at least one positioning bead pushes the positioning disc and the movable member upward to move relative to the gear set, so that the guide of the at least one guide post portion The leading surface pushes up against the at least one card bead to drive the at least one card bead to protrude outward from the first card hole and be engaged with the second card hole. The kettlebell according to claim 7, wherein the positioning plate has a positioning plate body, and the number corresponds to at least one positioning bead and extends outward from a side edge of the positioning plate body and abuts against the at least one positioning Ears of beads. The kettlebell according to claim 8, wherein the driving mechanism further has at least one positioning elastic member bounded between the base body and the at least one ear of the positioning plate, and the at least one positioning elastic member is constant. Push down the at least one ear part elastically to push the at least one positioning bead. The kettlebell according to claim 9, wherein the driving mechanism has two positioning beads and two positioning elastic members, and the positioning plate has two extending outward from two opposite sides of the side edge of the positioning plate body and The ears of the positioning beads are respectively top-bottomed, and the positioning elastic members are constantly pushed against the ears to push the positioning beads into the positioning grooves. The kettlebell according to claim 1, wherein the seat further includes a housing portion for connecting the combination module, and the combination module further includes a shaft unit for the connection parts to pass through, and a fixed An anti-rotation disc at the housing part and coaxially rotatably inserted by the shaft unit, and a safety pin passing through the shaft unit and located above the anti-rotation disc, the anti-rotation disc has several The slot is arranged in the slot of the shaft unit, and the safety pin can be driven by the shaft unit to move up and down in a locked position and a loose position relative to the anti-rotation disc. In the locked position, the safety pin is embedded in the One of the locking grooves of the anti-rotation disc prevents the shaft unit from rotating relative to the housing portion. When in the loose position, the safety pin is detached upward from the locking grooves; when the shaft unit is combined with the adjustment module At this time, the adjustment module will push against the shaft unit to drive the safety pin to the loose position. The kettlebell according to claim 11, wherein the shaft unit has a shaft sleeve extending up and down, and a shaft that can be passed through the shaft sleeve in a relative displacement up and down. The first long slotted holes arranged axially spaced apart and extending axially, a first perforation located above the first long slotted holes, and at least one recessed slot for the card of the adjustment module, the shaft sleeve has several Corresponding to the second perforations of the first long slotted holes and a second long slotted hole corresponding to the first perforated hole and extending axially, each coupling member passes through the corresponding first long slotted hole and the first perforated hole. Two perforations are combined with the shaft unit, and the safety pin is combined with the shaft unit through the first perforation and the second long slot hole. When the shaft unit is engaged with the adjustment module, the safety pin The adjustment module pushes the shaft to move upward relative to the shaft sleeve, and drives the safety pin to the loose position. The kettle bell according to claim 12, wherein the combination module further has a combination elastic member which elastically abuts vertically between the top end of the shaft unit and the housing portion, and has a constant An elastic force that drives the shaft unit to drive the safety pin down to the locked position. The kettle bell according to claim 11, wherein the shaft hole of each weight block has a central area for the shaft unit to pass through, and two connecting parts which surround and surround the central area and can be used for the joints. The horizontally extending width of the slotted area located in the lower layer is greater than the horizontally extended width of the slotted area located in the upper layer among the slotted areas passing through the upper and lower displacements.