TWI601554B - Easy to adjust weight dumbbell group - Google Patents

Description

Dumbbell set for easy adjustment of weight

The present invention relates to fitness equipment, and more particularly to a dumbbell set that facilitates adjustment of the weight.

Press, dumbbell is a common and simple fitness equipment, mainly used for the user's hand to grasp, to strengthen the arm.

However, the old dumbbells are integrally formed, so the weight cannot be changed. When the user wants to use dumbbells of different weights, he must purchase most of the dumbbells of different weights, and the cost is too high and the number is too large to be stored.

Therefore, there is currently a dumbbell group capable of adjusting the weight, which is mainly composed of a dumbbell and a storage seat having a plurality of weights that can be selectively detached or combined, and the storage seat has Most of the grooves are such that the detached weight can be placed in the groove. However, the weight on the dumbbell is not easy to adjust the weight, which makes the adjustment of the weight too cumbersome and inconvenient.

In view of the above, in order to improve the prior art, the conventional dumbbell group has the problem of inconvenient deployment; thus, the present invention provides a dumbbell group for facilitating adjustment of the weight, which mainly comprises: a storage seat having a body and a storage area disposed on the top surface of the base body and two top pillars, the storage areas having a plurality of side-by-side storage slots; a dumbbell having a handle and two weight units respectively disposed on the two ends of the handle Each of the weight units has a brake cover, a turntable, one end disc, and a plurality of hooks a disc, a plurality of weights and a limiting member; the brake cover has a cover, a brake block and a spring, the cover is sleeved on the handle, the cover has a window, a a sliding slot on the opposite side of the viewing window, the brake block is disposed in the sliding slot, and is reciprocally slipped by an external force acting on a release position to a braking position, the spring is abutting the brake Between the block and the groove wall of the chute, the turntable is fixed on the handle and located in the cover. The turntable is provided with a plurality of brake grooves and a plurality of weight values at equal angles, and the end plate is fastened. Attached to the end edge of the handle, the hooks are fixed to the handle at equal intervals, and are located between the turntable and the end plate, so that one side of each of the hooks forms a weight. a space, and each of the hooks is adjacent to one side of the weight space and has a hooking unit, the hooking unit has at least one convex portion and at least one space adjacent to the convex portion, and each of the weights has a limiting groove and a hooking protrusion, the limiting member is fixed to the brake disk and located in the weight space, so that The rotating member is caught in the weight limiting slot of the weighted space; when the dumbbell is placed on the receiving seat, the braking block is pushed by the top pillar and is slipped to the loose position. The handle, the turntable and the hook plate are rotatable relative to the brake disc, thereby adjusting the relative positions of the convex portion and the gap on the hook plate and the hooking convex portion of the weight block, so that the weights can be selectively grouped Connecting to or detaching from the weight space to reach an adjustment weight; when the dumbbell is away from the storage seat, the brake block is pushed by the spring and is slid to a braking position, so that The handle, the turntable and the hook can not be rotated relative to the brake disc, so that the weight in the weight space cannot be separated from the hook; thereby achieving the effect of adjusting the weight.

The invention further provides a dumbbell set for facilitating adjustment of the weight, which mainly comprises: a storage seat having a body and two storage areas on the top surface of the seat body, the storage areas having a plurality of storage slots; a dumbbell The utility model has a handle and two weight units respectively disposed on the two ends of the handle, the weight units having a brake cover, a turntable, a end disc, a plurality of hooks and a plurality of weights, the brake The cover sleeve is sleeved on the handle and reciprocally slidable from a release position to a braking position, the turntable is fixed on the handle and located in the brake cover, and the end plate is fixed In the grip The hooks are fastened to the handle and are located between the turntable and the end disc. At least one side of the hooks forms a weight space, and the hooks are adjacent to the handle. The side of the heavy space has a hooking unit, the hooking unit has at least one convex portion and at least one space adjacent to the convex portion, and each of the weights has a hooking convex portion, and the brake cover is slid When moving to the loose position, the handle, the turntable and the hook plate can be rotated relative to the brake cover, thereby adjusting the relative position of the convex portion and the gap on the hook plate and the hooking convex portion of the weight block, at least one weight unit The circumferential surface of any of the hooks has a plurality of sensing protrusions arranged annularly along the circumferential surface at equal intervals; the weights can be selectively and independently assembled in the weight space or from the matching Disengagement in the heavy space, when the weight is selected to fit in the weight space, the hooking protrusion is in contact with the convex portion of the hook, when the weight is selected from the weight space When disengaged, the hooking protrusion is located in the gap of the hook; at least one sensing device, the sensing device is disposed on the dumbbell The sensing device has a detecting switch, a central control unit, a timer, a gravity sensor and a display, and the detecting switch has a detecting end. The position of the detecting end portion corresponds to the circumferential surface of the hook plate having the sensing convex portion, and the central control unit is electrically connected to the detecting switch for performing a logic operation, and the timer and the central control unit are electrically connected Sexual connection for calculating the usage time, the gravity sensor is electrically connected to the central control unit for providing information on speed and displacement, and the display is electrically connected to the central control unit for displaying the central processing The value after the unit is calculated for the user to view.

"First preferred embodiment"

100‧‧‧Dumbbell set for easy adjustment of counterweight

10‧‧‧ Storage

11‧‧‧

12‧‧‧ Storage area

121‧‧‧ Storage trough

13‧‧‧Top column

20‧‧‧Dumbbells

30‧‧‧Handle

40‧‧‧weight unit

41‧‧‧Brake cover

411‧‧‧ Cover

412‧‧‧ brake pads

413‧‧ ‧ spring

414‧‧ ‧ view window

415‧‧‧ chute

416‧‧‧ action hole

42‧‧‧ Turntable

421‧‧‧ brake groove

422‧‧‧weight value

43‧‧‧ positioning group

431‧‧‧Positioning holes

432‧‧‧ positioning slot

433‧‧ ‧ spring

434‧‧‧ beads

44‧‧‧End plate

45‧‧‧

451‧‧‧weight space

452‧‧‧Hooking unit

453‧‧‧ convex

454‧‧‧ gap

46‧‧‧weights

461‧‧

462‧‧‧hook the convex part

47‧‧‧Restricted parts

"Second preferred embodiment"

200‧‧‧Dumbbell set for easy adjustment of counterweight

10‧‧‧ Storage

20‧‧‧Dumbbells

30‧‧‧Handle

40‧‧‧weight unit

41‧‧‧Brake cover

42‧‧‧ Turntable

422‧‧‧weight value

43‧‧‧ positioning group

44‧‧‧End plate

45‧‧‧

452‧‧‧Hooking unit

453‧‧‧ convex

454‧‧‧ gap

455‧‧‧ Sense convex

46‧‧‧weights

47‧‧‧Restricted parts

471‧‧ ‧ room

472‧‧‧Detecting perforations

48‧‧‧Isolation

50‧‧‧Sensing device

51‧‧‧Detection switch

511‧‧‧Detecting end

52‧‧‧Central Control Unit

53‧‧‧Timer

54‧‧‧Gravity sensor

55‧‧‧ display

56‧‧‧Transportation unit

The first figure is an exploded perspective view of a first preferred embodiment of the present invention.

The second drawing is a perspective assembled view of the embodiment shown in the first figure.

The third figure is an exploded perspective view of a partial member of the embodiment shown in the first figure.

4 to 19 are schematic views of the operation of the embodiment shown in the first figure.

Figure 20 is a perspective exploded view of a second preferred embodiment of the present invention.

The twenty-first figure is a perspective assembled view of the embodiment shown in the twenty-fifth figure.

The twenty-second figure is a majority of the solution of the embodiment shown in the twentieth diagram.

The twenty-third figure is a block diagram of the organization of the sensing device in the embodiment shown in the twentieth embodiment.

The twenty-fourth embodiment is a schematic diagram of the operation of the embodiment shown in the twenty-first embodiment.

The twenty-fifth diagram is a schematic diagram of the operation of the embodiment shown in the twenty-fifth figure.

Figure 26 is a block diagram showing another aspect of the sensing device in the embodiment shown in Figure 20.

In order to enable the reviewing committee to have a better understanding and recognition of the features and characteristics of the present invention, the following preferred embodiments are illustrated as follows: Referring to the first to the nineteenth, the first aspect of the present invention A dumbbell set 100 for adjusting the weight is provided in a preferred embodiment, which mainly includes a receiving seat 10 and a dumbbell 20, wherein: referring to the first to fifth figures, the receiving seat 10 has a body 11 2, two storage areas 12 and two top pillars 13. The seat body 11 can be stably placed on a plane (such as a floor or a table top), and the storage areas 12 are located on the top surface of the seat body 11 at a predetermined distance, and the storage areas 12 are arranged side by side. The accommodating groove 121 is formed on the top surface of the base body 11 and is located beside the storage areas 12 .

Referring to the first to fifth figures, the dumbbell 20 has a handle 30 and two weight units 40. The two weight units 40 are respectively disposed on the two ends of the handle 30. Since the components of the two weight units 40 and the related connection relationship with the handle 30 are the same, the following is only for the sake of redundancy. The single weight unit 40 is described. The weight unit 40 has a brake cover 41, a turntable 42, a positioning group 43, an end disk 44, and a plurality of hooks 45. The weighting block 46 and a limiting member 47; the brake cover 41 has a cover 411, a brake block 412 and a spring 413. The cover 411 is sleeved on the handle 30 and opposite to the handle The cover 30 rotates. The cover 411 has a viewing window 414, a sliding slot 415 on the opposite side of the viewing window 414, and a working hole communicating with the sliding slot 415 and having a width smaller than the slot width of the sliding slot 415. 416, the brake block 412 is disposed in the sliding slot 415, and can be linearly reciprocated and slipped by an external force acting from a releasing position to a braking position, the spring 413 abutting the braking block 412 and the Between the groove walls of the chute 415, an elastic pre-force for moving the brake block 412 to the braking position is provided; the turntable 42 is fixed to the handle 30 and is located in the cover 411, and the turntable 42 is waiting The angle is provided with a plurality of brake grooves 421 and a plurality of weight values 422; the positioning group 43 is disposed between the brake cover 41 and the turntable 42 to provide a moderate rotational resistance between the turntable 42 and the brake disk 41. The positioning group 43 has a plurality of positioning holes 431 disposed on the turntable 42 at an equal angle, and a positioning disposed on the cover 41. 432, a spring 433 disposed in the positioning slot 432 and a bead 434 pushed by the spring 433; the end disc 44 is fixed to the end edge of the handle 30; Between the turntable 42 and the end plate 44, the weight of each of the hooks 45 forms a weight space 451, and the hooks 45 are adjacent to each other. One side of the weight space 451 has a hooking unit 452. Specifically, the hooking unit 452 on each of the hooks 45 has different shapes, but each has at least one convex portion 453 and at least one bit. a gap 454 adjacent to the convex portion 453; each of the weights 46 has a limiting groove 461 and a hooking protrusion 462, and the weights 46 are independently selectively coupled to the weights The space 451 is detached from the weight space 451; the limiting member 47 is fixed to the brake disk 41 and located in the weight space 451, so that the limiting member 47 is engaged in the assembly. In the weight space 451 The weight 46 is limited to the inside of the groove 461 to prevent the weight from coming off the weight space 451.

Therefore, the above is a description of each component of the dumbbell set 100 for adjusting the weight and the assembly manner thereof provided by the first preferred embodiment of the present invention, and then the use characteristics thereof are as follows: when the user wants to adjust The weight of the dumbbell 20 is selectively detached from the weight 46 on the dumbbell 20 to reduce the number of weights 46 attached to the handle 30 to reduce the weight of the dumbbell 20.

First, the dumbbell 20 is placed on the top surface of the accommodating seat 10 (as shown in the fourth figure), and the weights 46 on the dumbbell 20 are placed in the accommodating slots 121 of the accommodating seat 10 ( As shown in FIG. 5, and when the weights 46 contact the bottom of each of the receiving slots 121, the top post 13 of the receiving seat 10 passes through the working hole 416 of the dumbbell 20, so that The top post 13 pushes the brake block 412 to move from the braking position to the releasing position, that is, the braking block 412 originally located in the braking position is engaged in the braking groove 421 (as shown in FIG. 6), so that the handle 30, The turntable 42 and the hook 45 cannot rotate relative to the brake cover 41, and when the brake block 412 is pushed by the top post 13 to the release position, the brake block 412 is released from the brake groove 421 (such as the seventh As shown in the figure, the grip 30, the turntable 42 and the hook 45 are rotated relative to the brake cover 41.

In this way, the user can rotate the handle 30 to drive the turntable 42 to rotate relative to the brake cover 41, and determine the weight of the weight according to the weight value 422 appearing in the view window 414, and the handle is 30, while the turntable 42 is rotated, the hooks 45 are also rotated by the handle 30 to adjust the hooking unit 452 on the hook 45 and the hooking protrusion on the weight 46. The relative position of 462 rooms.

When the user selects the lightest weight, the hooking protrusions 462 of the weights 46 correspond to the gaps 454 of the hook 45 hooking unit 452 (as shown in FIG. 8), so that the user When the grip 30 is separated from the accommodating seat 10, all the weights 46 are placed in the accommodating groove 121 of the accommodating seat 10 (as shown in FIG. 9) for the purpose of the lightest weight.

If the user selects the heaviest weight, the hooking protrusions 462 of the weights 46 correspond to the protrusions 453 of the hook 45 hooking unit 452 (as shown in FIG. 10) for use. When the handle 30 is separated from the storage base 10, all the weights 46 will be carried by the convex portion 453 of the hook 45 (as shown in FIG. 11) to reach the heaviest weight. The purpose. Of course, since the weight 46 that is carried by the hook 45 is engaged by the rotation restricting member 47 in the rotation restricting groove 451 and the brake block 412 is displaced by the spring 413, it is located at the braking position (ie, The brake block is engaged in the brake groove, so that the handle 30 and the brake cover 41 cannot rotate relative to each other, so that the weight 46 cannot be rotated relative to the handle 30, and the weight can be prevented from being Leave on your own.

In addition, since the shape of the hooking unit 452 on each of the hooks 45 is different, that is, the number of the convex portions 453 and the gaps 454 of each of the hooking units 452 is not exactly the same, and can be rotated. The effect of adjusting the weight is achieved by angle, that is, whether the weight of each of the weights can be hooked or detached by rotating the angle of the hook 45, so that the weights 46 can be independently selected. It is placed in the weight space 451 of the dumbbell 20 or is separated from the weight space 451 and placed on the storage base 10. Therefore, the weighting state that can be adjusted by the present invention is quite diverse, and the other changes as shown in Figs. 12 to 19 can be more than the lightest weight and the heaviest weight.

Therefore, the present invention can adjust the overall weight quite conveniently for the actual use of the user or different users.

Secondly, when the user adjusts the weight of the weight, that is, when the handle 30 is rotated relative to the brake cover 41, each weight value 422 appears in the viewing window 414, and the bead of the positioning group 43 The 434 is pushed by the spring force of the spring 433 to partially slide into the positioning hole 431, so that the user can feel the proper rotation resistance, and the turntable 42 can be positioned at the correct angle.

Referring to the twenty-fifth to twenty-sixth drawings, a dumbbell set 200 for adjusting the weight is provided in the second preferred embodiment of the present invention, which comprises a storage stand 10 as in the first preferred embodiment. And a dumbbell 20, further comprising a sensing device 50, wherein: in the embodiment, as shown in the twentieth embodiment, the dumbbell 20 has a handle 30 and two respectively according to the first preferred embodiment. The weight unit 40 is disposed on the two ends of the handle 30, and each of the weight units 40 also has a brake cover 41, a turntable 42, a positioning group 43, an end disk 44, a plurality of hooks 45, and a plurality of The weighting block 46 and the limiting member 47 are also assembled in the same manner as the first preferred embodiment, and are not described in detail. However, in this example, the circumferential surface of any of the hooks 45 of one of the weight units 40 has a plurality of sensing protrusions 455 arranged annularly at equal intervals along the circumferential surface; the top surface of the limiting member 47 A chamber 471 is opened from the top to the bottom, and a detecting hole 472 is formed in the bottom surface of the limiting member 47 to connect the chamber 471 to the outside.

Referring to FIG. 20 to FIG. 23 , the sensing device 50 is disposed on the weight unit 40 of the dumbbell 20 and the sensing protrusion 455 . The sensing device 50 has a detecting switch 51 . A central control unit 52, a timer 53, a gravity sensor 54 and a display 55; the detection switch 51 is disposed in the chamber 471 of the limiting member 47 of the counterweight unit 40, the detecting switch 51 The detection end portion 511 is disposed outside the detection hole 472. The position of the detection end portion 511 corresponds to the circumferential surface of the hook plate 45 having the sensing protrusion 455. The central control unit 52 Is disposed in the chamber 471 and is connected to the detecting switch 51 is electrically connected to perform a logic operation. The timer 53 is disposed in the chamber 471 and electrically connected to the central control unit 52 for calculating the usage time. The gravity sensor 54 is disposed on the The central control unit 52 is electrically connected to the central control unit 52 for providing information on speed and displacement. The display 55 is disposed in the chamber 471 and electrically connected to the central control unit 52. The value outputted by the central processing unit 52 is displayed for the user to view.

Therefore, when the user places the dumbbell 20 on the storage base 10 to select the number of the weights 46, the rotary disk 42 and the hook 45 also rotate simultaneously because the user rotates the handle 30. As shown in the twenty-fourth figure, the detecting end portion 511 of the detecting switch 51 will be rotated and turned (clockwise or counterclockwise) with the sensing convex portion 451 on the hook 45. Turned to, the central control unit 52 is provided to allow the central control unit 52 to calculate the weight selected by the user, and to transmit information to the display 55, and the display 55 displays the weight value (eg, twenty-five map). Shown). In this way, in addition to the weight value 422 on the turntable 42 of the counterweight unit 40, the user can obtain the weight display by the display 55 of the sensing device 50, so as to increase the convenience. Know the way to weight.

In this embodiment, in addition to displaying the weight of the weight selected by the user, the sensing device 50 can further calculate the time of lifting the dumbbell 20 by the timer 53 and transmit it to the central control unit 52, and The gravity sensor 54 senses the speed and displacement of the movement of the dumbbell 20 and transmits it to the central control unit 52 to integrate the weight of the weight selected by the user and the timer by the central control unit 52. The operation time and the movement speed and displacement amount sensed by the gravity sensor 54 are used to perform a logic operation, and the consumed calories (calories) can be displayed by the display 55 to allow the user to know more about using the present invention. Data.

Next, as shown in the twenty-fifth figure, the sensing device 50 in this embodiment may further include a transmission unit 56, which may be a wired transmission interface (such as a USB jack for transmission line connection) or a wireless transmission interface (such as Bluetooth, WIFI, etc.) to transmit data calculated by the central control unit 52 to a mobile electronic device (such as a mobile phone, a tablet) or a personal computer (PC) for the user to exercise in the future. References and statistics.

In addition, as shown in the twenty-first and twenty-fifth embodiments, in the embodiment, each of the opposite sides of the hook 45 has a hooking unit 452, and in particular, each hook The hooking units 452 on the 45 are all different in shape, but each has at least one convex portion 453 and at least one space 454 beside the convex portion 453. Thereby, the weights 46 located at the two sides can be hooked or detached by the hooks 45 having the hooking units 452 on both sides.

Furthermore, as shown in the twenty-first embodiment, in the embodiment, the weight unit 40 further has a plurality of spacers 48 disposed on the handle 30 and positioned at the predetermined intervals. One side of 45 is on the side.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all of the related art in the art according to the present invention are equivalent to the present invention. The scope of coverage.

20‧‧‧Dumbbells

30‧‧‧Handle

40‧‧‧weight unit

41‧‧‧Brake cover

411‧‧‧ Cover

412‧‧‧ brake pads

413‧‧ ‧ spring

414‧‧ ‧ view window

415‧‧‧ chute

416‧‧‧ action hole

42‧‧‧ Turntable

421‧‧‧ brake groove

422‧‧‧weight value

43‧‧‧ positioning group

431‧‧‧Positioning holes

432‧‧‧ positioning slot

433‧‧ ‧ spring

434‧‧‧ beads

44‧‧‧End plate

45‧‧‧

452‧‧‧Hooking unit

453‧‧‧ convex

454‧‧‧ gap

47‧‧‧Restricted parts

Claims (10)

The utility model relates to a dumbbell group which is convenient for adjusting the weight, which mainly comprises: a storage seat having a body and two storage areas on the top surface of the seat body, the storage areas having a plurality of storage slots; a dumbbell having a grip The handle unit and the second weight unit are respectively disposed on the two ends of the handle, and each of the weight unit has a brake cover, a turntable, a first end disc, a plurality of hooks and a plurality of weights, and the brake cover is sleeved Reciprocatingly sliding between a release position and a braking position, the turntable being fixed to the handle and located in the brake cover, the end plate being fixed to the handle On the end edge, the hooks are fixed on the handle and located between the turntable and the end disc, and at least one side of each of the hooks forms a weight space, and the hooks are adjacent to the weights. The side of the space has a hooking unit, the hooking unit has at least one convex portion and at least one space adjacent to the convex portion, and each of the weights has a hooking convex portion, and the brake cover slips When the position is released, the handle, the turntable and the hook can be rotated relative to the brake cover, and then adjusted The relative position of the convex portion and the gap on the hook plate and the hooking convex portion of the weight block, and the circumferential surface of any of the at least one weight unit has a plurality of senses arranged annularly along the circumferential surface at equal intervals a convex portion; the weights can be selectively and independently assembled in or out of the weight space, and when the weight is selected to fit in the weight space, the hook The convex portion is in contact with the convex portion of the hook plate, and when the weight is selected to be detached from the weight space, the hooking convex portion is located in the gap of the hook; at least one sensing device The sensing device is disposed on the weight unit of the dumbbell with the sensing protrusion, the sensing device has a detecting switch and a central control unit, the detecting switch has a detecting end, and the detecting end The position of the portion corresponds to the circumferential surface of the hook having the sensing protrusion, the central control unit is electrically connected to the detecting switch to perform a logic operation, and the calculated value is outputted; the sensing The device further has a timer, a gravity sensor and a display, the timer, the gravity sensor Based display unit is electrically connected with the central control, the end portion of the detection based on the detection switch Providing the number of times of contact with the sensing protrusion on the hook to the central control unit, so that the central control unit calculates the weight selected by the weight and transmits the information to On the display, the weight value is displayed by the display; and the time statistics of the dumbbell lifting are performed via the timer, and transmitted to the central control unit, and the speed and displacement of the dumbbell movement are sensed by the gravity sensor. The amount is transferred to the central control unit, and the central control unit integrates the selected weight weight, the time measured by the timer, and the moving speed and displacement measured by the gravity sensor. The operation can be used to display the heat consumed by the display. The dumbbell set for facilitating adjustment of the weight according to the first aspect of the patent application, wherein the brake cover has a cover, a brake block and at least one spring; the cover is sleeved on the handle, the cover The utility model has a viewing window and a sliding slot on the opposite side of the viewing window. The braking block is disposed in the sliding slot and is reciprocally slipped by an external force acting on the releasing position to the braking position. Abutting between the brake block and the groove wall of the chute, the turntable is provided with a plurality of brake grooves and a plurality of weight values at equal angles. A dumbbell set for facilitating adjustment of a weight according to the scope of claim 2, wherein when the dumbbell is placed on the storage seat, the brake block is pushed by the storage seat and is slid to a loose position, the brake The block is slid out of the brake groove, so that the weights can be selectively assembled into or detached from the weight space to achieve an adjustment weight; when the dumbbell is away from the storage When the seat is seated, the brake block is pushed by the spring to slide to the braking position, and is engaged in the brake groove, so that the handle, the turntable and the hook plate cannot be rotated relative to the brake disk, so as to be located in the weight space The weight in the middle cannot be separated from the hook. The dumbbell set for adjusting the weight according to the second aspect of the patent application, wherein the storage base has two top columns; the brake cover of each weight unit has an action hole communicating with the sliding slot, and the The width of the working hole is smaller than the groove width of the sliding groove for the top column of the receiving seat to penetrate and push the brake block to move to the loose position. The dumbbell group for adjusting the weight according to the first aspect of the patent application, wherein the weight unit of the dumbbell further has a positioning group disposed between the brake cover and the turntable to be in the turntable The brake disc provides a moderate degree of rotational resistance. The dumbbell group for adjusting the weight according to the fifth aspect of the patent application, wherein the positioning group has a plurality of positioning holes disposed on the turntable at an equal angle, a positioning groove disposed on the brake cover, and a placing a spring in the positioning groove and a bead body pushed by the spring; when the turntable is rotated by a predetermined angle with respect to the brake disc, the bead system is pushed into a positioning hole thereof. The dumbbell group for adjusting the weight according to the first aspect of the patent application, wherein the weight has a limit rotation groove; the weight unit further has a limit rotation member fixed to the brake disk, and Located in the weight space, the limit member is engaged in the limit groove of the weight block assembled in the weight space. According to the seventh aspect of the patent application, the dumbbell group for adjusting the weight is provided, wherein a space is formed on the top surface of the limiting member, and a bottom of the limiting member is connected to the outside of the container. The detecting switch, the central processing unit, the timer, the gravity sensor and the display are placed in the chamber of the limiting member, and the detecting end is threaded out of the detecting through hole. The dumbbell set for facilitating adjustment of the weight according to the first aspect of the patent application, wherein the sensing device further has a transmission unit, and the transmission unit is a wired transmission interface or a wireless transmission interface. The dumbbell group for adjusting the weight according to the first aspect of the patent application, wherein each of the opposite sides of the hook has a hooking unit, each hooking unit having at least one convex portion and at least one a gap beside the convex portion.