Adjustable dumbbell

Abstract

The invention discloses an adjustable dumbbell. The adjustable dumbbell comprises a base; any weight stack selecting assembly comprises a fixing piece, a driving block and a cam, the driving block is slidably connected with the fixing piece, the driving block abuts against the outer edge of the cam under the elastic action of a first elastic piece, the fixing piece is rotationally connected with a first rotating tongue and a second rotating tongue, the first rotating tongue can be screwed out from one side of the fixing piece, and the second rotating tongue can be screwed out from the other side of the fixing piece. The second rotating tongue can rotate out of the other side of the fixing piece, the cam can rotate relative to the fixing piece, and the first rotating tongue and the second rotating tongue are connected with the driving block; the weight stacks are in one-to-one correspondence with the weight stack selection assemblies, first fixing grooves are formed in the positions, right opposite to the first rotating tongues, of the weight stacks, the first rotating tongues are screwed into or screwed out of the first fixing grooves from the upper portions of the first fixing grooves, and second fixing grooves are formed in the positions, right opposite to the second rotating tongues, of the weight stacks; and the second rotating tongue is screwed into or out of the second fixing groove from the upper part of the second fixing groove. And the reliability of the adjustable dumbbell is improved.

Description

Technical Field

[0001] The present invention generally relates to the field of fitness equipment, and more particularly to an adjustable dumbbell. Background Art

[0002] Dumbbells are a kind of fitness auxiliary equipment that can assist users in chest extension training, biceps training, etc. However, since different training requires different dumbbell weights, users need to replace dumbbells of different weights or install and remove dumbbell plates. Adjustable dumbbells are a type of dumbbells. Compared with ordinary dumbbells, adjustable dumbbells are more convenient to adjust the dumbbell weight.

[0003] In the prior art, the adjustable dumbbell can drive a single fixed block to extend into the weight plate by rotating the handle, thereby connecting the weight plate to the handle. When performing a drop test, the single fixed block is subjected to shear force and is easily broken, affecting the reliability of the adjustable dumbbell. Summary of the invention

[0004] In view of the above defects or deficiencies in the prior art, it is desired to provide an adjustable dumbbell with high reliability.

[0005] In a first aspect, the adjustable dumbbell of the present invention comprises:

[0006] Base;

[0007] A plurality of weight plate selection components, any of which comprises a fixing member, a driving block and a cam, wherein the driving block is slidably connected to the fixing member, the driving block abuts against the outer edge of the cam under the elastic force of a first elastic member, the fixing member is rotatably connected with a first rotating tongue and a second rotating tongue, the first rotating tongue can be rotated out from one side of the fixing member, and the second rotating tongue can be rotated out from the other side of the fixing member, the cam can rotate relative to the fixing member, and the first rotating tongue and the second rotating tongue are respectively connected to the driving block;

[0008] A plurality of weight plates, the plurality of weight plates are respectively placed on the base, the weight plates correspond to the weight plate selected components one by one, a first fixing groove is arranged on the weight plate at a position directly opposite to the first rotating tongue, the first rotating tongue is rotated into or out of the first fixing groove from an upper part of the first rotating groove, a second fixing groove is arranged on the weight plate at a position directly opposite to the second rotating tongue, the second rotating tongue is rotated into or out of the second fixing groove from an upper part of the second rotating groove;

[0009] A handle assembly, comprising a handle rod, the handle rod passing through a plurality of the cams, the cams rotating following the handle rod;

[0010] The handle rod rotates to drive the cam to rotate relative to the fixing member, the cam rotates to drive the driving block to slide, and the driving block slides to drive the first rotating tongue and the second rotating tongue to rotate out of or into the fixing member synchronously.

[0011] According to the technical solution provided by the embodiment of the present application, when the weight plate selection assembly selects the corresponding weight plate, the cam is driven to rotate relative to the fixed part by rotating the handle rod, the cam rotates, driving the drive block to slide, the drive block slides, driving the first rotary tongue and the second rotary tongue to rotate out of the fixed part synchronously, the first rotary tongue rotates out of the fixed part and then rotates into the first fixed groove, the second rotary tongue rotates out of the fixed part and then rotates into the second fixed groove, the first rotary tongue and the second rotary tongue are used to connect the weight plate together, so that the weight plate follows the movement of the handle assembly. When performing a drop test, the weight plate and the handle assembly will produce relative movement, the weight plate will push the first rotary tongue and the second rotary tongue to rotate, avoiding the situation where the first rotary tongue and the second rotary tongue have excessive stress concentration, the first rotary tongue and the second rotary tongue will not break, and the reliability of the adjustable dumbbell is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0013] Figure 1 A schematic diagram of the structure of the first and second rotating tongues of the weight plate selection assembly of the adjustable dumbbell according to an embodiment of the present invention being screwed into the fixing member;

[0014] Figure 2 A schematic diagram of the structure of the first and second rotating tongues of the weight plate selection assembly of the adjustable dumbbell according to an embodiment of the present invention being screwed into the fixing member;

[0015] Figure 3 For along Figure 2 Sectional view along line AA;

[0016] Figure 4 A schematic diagram of the structure of the first and second rotating tongues of the weight plate selection assembly of the adjustable dumbbell according to an embodiment of the present invention being rotated out of the fixing member;

[0017] Figure 5 A schematic diagram of the structure of the first and second rotating tongues of the weight plate selection assembly of the adjustable dumbbell according to an embodiment of the present invention being rotated out of the fixing member;

[0018] Figure 6 For along Figure 5 Sectional view along the midline BB;

[0019] Figure 7 A front view of an adjustable dumbbell according to an embodiment of the present invention;

[0020] Figure 8 It is a right side view of the adjustable dumbbell according to an embodiment of the present invention;

[0021] Fig. 9 is a three-dimensional diagram of an adjustable dumbbell according to an embodiment of the present invention;

[0022] Fig.10 For along Figure 7 Sectional view of the mid-CC line;

[0023] Fig.11 for Fig. 9 A partial enlarged view of the middle A;

[0024] Fig.12 For along Figure 8 Sectional view along the mid-DD line;

[0025] Fig.13 for Fig.12 A partial enlarged view of point B in the middle;

[0026] Fig.14 It is a schematic structural explosion diagram of a handle assembly of an adjustable dumbbell according to an embodiment of the present invention;

[0027] Fig.15 It is a schematic structural explosion diagram of a handle assembly of an adjustable dumbbell according to an embodiment of the present invention;

[0028] Fig.16 It is a schematic exploded view of the structure of multiple cams of an adjustable dumbbell according to an embodiment of the present invention;

[0029] Fig.17 A schematic structural diagram of a weight plate selected by a weight plate selection assembly of an adjustable dumbbell according to an embodiment of the present invention;

[0030] Fig.18 For along Fig.17 Cross-sectional view along line EE. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Please refer to Figures 1 to 18The adjustable dumbbell of the present invention comprises: a base 40; a plurality of weight plate selection assemblies 10, any of which comprises a fixing member 100, a driving block 110 and a cam 300, wherein the driving block 110 is slidably connected to the fixing member 100, the driving block 110 abuts against the outer edge of the cam 300 under the elastic force of the first elastic member 200, the fixing member 100 is rotatably connected with a first rotating tongue 210 and a second rotating tongue 220, the first rotating tongue 210 can be rotated out from one side of the fixing member 100, and the second rotating tongue 220 can be rotated out from the other side of the fixing member 100, the cam 300 can rotate relative to the fixing member 100, the first rotating tongue 210 and the second rotating tongue 220 are respectively connected to the driving block 110; a plurality of weight plates 50, the plurality of weight plates 50 are respectively placed on the base 40, and the weight plates 50 are connected to the weight plate selection assembly 10 In one-to-one correspondence, a first fixing groove 510 is provided on the weight plate 50 at a position directly opposite to the first rotating tongue 210, and the first rotating tongue 210 is screwed into or out of the first fixing groove 510 from the upper part of the first fixing groove 510, and a second fixing groove 520 is provided on the weight plate 50 at a position directly opposite to the second rotating tongue 220, and the second rotating tongue 220 is screwed into or out of the second fixing groove 520 from the upper part of the second rotating tongue 520; the handle assembly 60 includes a handle rod 610, and the handle rod 610 passes through a plurality of cams 300, and the cams 300 rotate with the handle rod 610; the handle rod 610 rotates to drive the cams 300 to rotate relative to the fixing member 100, and the cams 300 rotate to drive the driving block 110 to slide, and the driving block 110 slides to drive the first rotating tongue 210 and the second rotating tongue 220 to synchronously rotate out of or into the fixing member 100.

[0034] In an embodiment of the present invention, when a user grasps the handle assembly 60 to perform muscle training, the weight plate selection assembly 10 and the weight plates 50 selected by the weight plate selection assembly 10 will move with the handle assembly 60. By adjusting the number of weight plates 50 selected by the weight plate selection assembly 10, the training weight can be adjusted to meet the different training needs of the user.

[0035] A plurality of weight plates 50 are placed on the base 40 , respectively, and the handle assembly 60 is placed on the weight plates 50 , so that the first rotating tongue 210 of the weight plate selection assembly 10 faces the first fixing groove 510 , and the second rotating tongue 220 faces the second fixing groove 520 .

[0036] When it is necessary to select the weight plate 50, the handle rod 610 is rotated to drive the cam 300 to rotate, and the rotation of the cam 300 drives the driving block 110 to slide, and the sliding of the driving block 110 drives the first rotating tongue 210 and the second rotating tongue 220 to synchronously rotate out of the fixing member 100, and the first rotating tongue 210 is rotated into the first fixing groove 510, and the second rotating tongue 220 is rotated into the second fixing groove 520, so that the weight plate 50 is connected to the weight plate selection assembly 10, and the selected weight plate 50 can follow the movement of the handle assembly 60, thereby increasing the training weight of the adjustable dumbbell.

[0037] When it is necessary to cancel the selection of the weight plate 50, the handle rod 610 is rotated to drive the cam 300 to rotate, and the rotation of the cam 300 drives the driving block 110 to slide, and the sliding of the driving block 110 drives the first rotary tongue 210 and the second rotary tongue 220 to be synchronously rotated into the fixing member 100, the first rotary tongue 210 rotates out of the first fixing groove 510, and the second rotary tongue 220 rotates out of the second fixing groove 520, so that the weight plate 50 is disengaged from the weight plate selection assembly 10, and the deselected weight plate 50 cannot follow the movement of the handle assembly 60, thereby reducing the training weight of the adjustable dumbbell.

[0038] The adjustable dumbbell includes a plurality of weight plates 50 and a plurality of weight plate selection assemblies 10. The weight plates 50 correspond to the weight plate selection assemblies 10 in a one-to-one relationship. Each weight plate 50 assembly is provided with a fixing member 100, a driving block 110 and a cam 300. The handle bar 610 passes through the plurality of cams 300. When the handle bar 610 is rotated, the plurality of cams 300 rotate along with the handle bar 610. The two sides of the adjustable dumbbell are symmetrical structures. On one side of the adjustable dumbbell, the outer edge structures of the cams 300 are different. Specifically, when it is necessary to select the weight plate 50, the handle bar 610 is rotated, and the plurality of cams 300 rotate together. The cam 300 of the weight plate selection assembly 10 close to the center of the adjustable dumbbell first drives the driving block 110 to move, and the weight plate 50 close to the center of the adjustable dumbbell is selected first. Continue to rotate the handle bar 610, and the cam 300 of the weight plate selection assembly 10 on the side away from the center of the adjustable dumbbell will drive the driving block 110 to move, and the weight plate 50 on the side away from the center of the adjustable dumbbell will be selected first. Continue to rotate the handle bar 610 until all the weight plates 50 are selected. The user can adjust the number of selected weight plates 50 according to training needs. When the weight plate 50 on the side away from the center of the adjustable dumbbell is selected, the weight plate 50 on the side close to the center of the adjustable dumbbell will remain selected. The user rotates the handle bar 610 in one direction, and as the rotation angle of the handle bar 610 changes, the number of selected weight plates 50 will also change. When selecting the weight plates 50, the weight plates 50 on the side close to the center of the adjustable dumbbell are selected first, and the weight plates 50 on the side away from the center of the adjustable dumbbell are selected later. Likewise, when deselecting the weight plate 50, the weight plate 50 on the side away from the center of the adjustable dumbbell is deselected first, and the weight plate 50 on the side close to the center of the adjustable dumbbell is deselected later.

[0039] The handle bar 610 may be, but is not limited to, a polygonal structure, such as a triangle, a quadrilateral, a pentagon, a hexagon, etc. The cam 300 is provided with a through hole for the handle bar 610 to pass through, and the shape of the through hole is the same as the shape of the cross section of the handle bar 610, so that the cam 300 can rotate with the handle bar 610. Of course, the shape of the through hole and the shape of the cross section of the handle bar 610 can also be set to a non-circular structure such as an ellipse. Figure 1 , 4 As shown in FIG. 10 , the shape of the through hole and the cross-section of the handle bar 610 are both hexagonal. When the handle bar 610 is rotated, the cam 300 is subjected to force as a whole, thereby ensuring the reliability of the cam 300.

[0040] The driving block 110 is pressed against the outer edge of the cam 300 by the elastic force of the first elastic member 200. During the rotation of the cam 300, if the distance between the outer edge of the cam 300 in contact with the driving block 110 and the rotation axis of the cam 300 changes, the driving block 110 is driven to slide relative to the fixed member 100. If the distance between the outer edge of the cam 300 in contact with the driving block 110 and the rotation axis of the cam 300 does not change, the driving block 110 will not slide relative to the fixed member 100.

[0041] When the weight plate selection assembly 10 selects the weight plate 50, the first rotating tongue 210 and the second rotating tongue 220 are synchronously rotated out of the fixing member 100, and the first rotating tongue 210 is rotated into the first fixing groove 510 after being rotated out of the fixing member 100, and the second rotating tongue 220 is rotated into the second fixing groove 520 after being rotated out of the fixing member 100. The weight plate 50 is connected by the first rotating tongue 210 and the second rotating tongue 220, so that the weight plate 50 moves with the handle assembly 60. The first rotating tongue 210 is rotated into or out of the first fixing groove 510 from the upper part of the first fixing groove 510, and the second rotating tongue 220 is rotated into or out of the second fixing groove 520 from the upper part of the second fixing groove 520. The driving block 110 is pressed against the outer edge of the cam 300 under the elastic force of the first elastic member 200, so that the first rotating tongue 210 is kept in the first fixing groove 510, and the second rotating tongue 220 is kept in the second fixing groove 520.

[0042] refer to Fig.18 ,by Fig.18 The position shown is described in detail. When performing a drop test, the bottom of the weight plate 50 contacts the ground, and the weight plate 50 and the handle assembly 60 will have relative movement. The weight plate 50 will move upward, and the handle assembly 60 and the weight plate selection assembly 10 will move downward. The weight plate 50 will push the first rotating tongue 210 to rotate clockwise and push the second rotating tongue 220 to rotate counterclockwise. The first rotating tongue 210 and the second rotating tongue 220 will drive the driving block 110 to slide downward, and the driving block 110 will further compress the first elastic member 200 to play a buffering role, avoiding the first rotating tongue 210 and the second rotating tongue 220 from excessive stress concentration. The first rotating tongue 210 and the second rotating tongue 220 will not break, thereby improving the reliability of the adjustable dumbbell.

[0043] The outer edge of the cam 300 may be provided with a plurality of protrusions 310 and a plurality of recesses 320, but is not limited thereto. The protrusions 310 and recesses 320 may be provided at intervals, but is not limited thereto. The drive block 110 is pressed against the outer edge of the cam 300 by the elastic force of the first elastic member 200. During the rotation of the cam 300, the drive block 110 is always in contact with the outer edge of the cam 300. When the drive block 110 is in contact with the protrusions 310 or the recesses 320, the position of the drive block 110 relative to the fixed member 100 will change, that is, as the cam 300 rotates, it can drive the drive block 110 to slide, thereby driving the first rotary tongue 210 and the second rotary tongue 220 to be synchronously rotated out or rotated into the fixed member 100. Figure 6 As shown, when the driving block 110 contacts the recessed portion 320, the first rotating tongue 210 and the second rotating tongue 220 are rotated out of the fixing member 100 synchronously; Figure 3 As shown, when the driving block 110 contacts the protrusion 310, the first rotating tongue 210 and the second rotating tongue 220 are synchronously rotated into the fixing member 100. Of course, the adjacent protrusions 310 and recesses 320 can be transitioned through an arc surface to ensure the smooth movement of the driving block 110 and the cam 300.

[0044] Furthermore, a first connecting portion 120 is provided on one side of the driving block 110, and the first connecting portion 120 is provided with a first sliding cavity 121. The first rotating tongue 210 is fixedly connected to a first sliding member 211, and the first sliding member 211 is at least partially located in the first sliding cavity 121.

[0045] A second connecting portion 130 is disposed on the other side of the driving block 110 . The second connecting portion 130 is provided with a second sliding cavity 131 . The second rotary tongue 220 is fixedly connected with a second sliding member 221 . The second sliding member 221 is at least partially located in the second sliding cavity 131 .

[0046] In the embodiment of the present invention, the first sliding member 211 can rotate and slide relative to the first sliding cavity 121, so as to ensure that the driving block 110 slides and drives the first rotary tongue 210 to move. The first sliding member 211 is at least partially located in the first sliding cavity 121, which can prevent the first sliding member 211 from being separated from the first sliding cavity 121.

[0047] The second sliding member 221 can rotate and slide relative to the second sliding cavity 131, thereby ensuring that the driving block 110 slides and drives the second rotary tongue 220 to move. The second sliding member 221 is at least partially located in the second sliding cavity 131, which can prevent the second sliding member 221 from being separated from the second sliding cavity 131.

[0048] Furthermore, a first accommodating cavity 212 is formed on one side of the first rotating tongue 210, and a portion of the first connecting portion 120 extends into the first accommodating cavity 212. The first sliding member 211 passes through the first sliding cavity 121, and both ends of the first sliding member 211 are fixedly connected to the first rotating tongue 210.

[0049] A second accommodating cavity 222 is defined at one side of the second rotating tongue 220 . The second connecting portion 130 partially extends into the second accommodating cavity 222 . The second sliding member 221 penetrates the second sliding cavity 131 . Both ends of the second sliding member 221 are fixedly connected to the second rotating tongue 220 .

[0050] In the embodiment of the present invention, a first accommodating cavity 212 is provided on one side of the first rotary tongue 210, and a portion of the first connecting portion 120 extends into the first accommodating cavity 212, which can reduce the axial movement of the first connecting portion 120 relative to the first rotary tongue 210 along the first sliding member 211. The first sliding member 211 passes through the first sliding cavity 121, and both ends of the first sliding member 211 are fixedly connected to the first rotary tongue 210, respectively, to ensure the stability of the connection between the first sliding member 211 and the first rotary tongue 210.

[0051] A second accommodating cavity 222 is provided on one side of the second rotary tongue 220, and a portion of the second connecting portion 130 extends into the second accommodating cavity 222, which can reduce the axial movement of the second connecting portion 130 relative to the second rotary tongue 220 along the second sliding member 221. The second sliding member 221 passes through the second sliding cavity 131, and both ends of the second sliding member 221 are fixedly connected to the second rotary tongue 220, respectively, to ensure the stability of the connection between the second sliding member 221 and the second rotary tongue 220.

[0052] Furthermore, the driving block 110 is provided with a limiting cavity 111 , the fixing member 100 is fixedly connected to the limiting member 140 , the limiting member 140 is at least partially disposed in the limiting cavity 111 , and the length direction of the limiting cavity 111 is parallel to the sliding direction of the driving block 110 .

[0053] In the embodiment of the present invention, the motion range of the driving block 110 relative to the fixing member 100 is limited by the cooperation of the limiting member 140 and the limiting cavity 111, thereby ensuring the stability of the motion of the driving block 110. Of course, the number of the limiting member 140 and the limiting cavity 111 can be set to one or more.

[0054] Furthermore, the first elastic member 200 is located on a side of the driving block 110 facing away from the cam 300 .

[0055] In the embodiment of the present invention, the first elastic member 200 is located on the side of the driving block 110 facing away from the cam 300, so that the first elastic member 200 bears the axial load, thereby improving the reliability of the first elastic member 200. The first elastic member 200 may be, but is not limited to, a spring. A fourth accommodating cavity may be provided on the fixing member 100, and the first elastic member 200 may be placed in the fourth accommodating cavity, thereby improving the stability of the first elastic member 200.

[0056] Furthermore, a first opening 150 for the first rotating tongue 210 to be rotated out is provided on one side of the fixing member 100 , and a second opening 160 for the second rotating tongue 220 to be rotated out is provided on the other side of the fixing member 100 .

[0057] In an embodiment of the present invention, the fixing member 100 can be set as a shell, and the driving block 110, the first elastic member 200, the first rotary tongue 210, and the second rotary tongue 220 can be set inside the fixing member 100 to avoid the internal structure of the weight plate selection assembly 10 from being exposed, thereby improving the reliability of the weight plate selection assembly 10.

[0058] When the cam 300 rotates, the first rotating tongue 210 can be rotated out from the first opening 150 or rotated in from the first opening 150. By providing the first opening 150, the fixing member 100 is prevented from interfering with the movement of the first rotating tongue 210. The second rotating tongue 220 can be rotated out from the second opening 160 or rotated in from the second opening 160. By providing the second opening 160, the fixing member 100 is prevented from interfering with the movement of the second rotating tongue 220.

[0059] Furthermore, the first rotating tongue 210 and the second rotating tongue 220 are respectively connected to the fixing member 100 in an eccentric rotation manner.

[0060] In the embodiment of the present invention, when the cam 300 rotates, the driving block 110 is driven to slide, thereby driving the first rotary tongue 210 and the second rotary tongue 220 to rotate. Since the first rotary tongue 210 and the second rotary tongue 220 are respectively eccentrically connected to the fixing member 100, the first rotary tongue 210 and the second rotary tongue 220 can be synchronously rotated out or rotated into the fixing member 100.

[0061] Furthermore, the handle assembly 60 includes a positioning plate 620, an upper decorative block 630 and a side cover 640. The positioning plate 620 and the side cover 640 are respectively fixedly connected to the upper decorative cover. A plurality of weight plates 50 are located between the positioning plate 620 and the side cover 640. The upper decorative cover is provided with positioning ribs 631. The positioning ribs 631 are located between any two adjacent weight plates 50. A first positioning boss 170 is provided at the bottom of the fixing member 100. The weight plate 50 is provided with a first positioning groove 530 for accommodating the first positioning boss 170.

[0062] In an embodiment of the present invention, when the weight plate selection assembly 10 selects the weight plate 50, the positioning rib 631 can clamp the top of the weight plate 50, and the first positioning boss 170 inserted into the first positioning groove 530 can clamp the bottom of the weight plate 50, thereby preventing the weight plate 50 from moving and improving the reliability of the connection between the weight plate 50 and the handle assembly 60.

[0063] refer to Fig.14 and 15 Furthermore, the handle assembly 60 includes an adjusting dividing plate 650, which is fixedly connected to the handle rod 610, and the adjusting dividing plate 650 is rotatably connected to the positioning plate 620. The positioning plate 620 is threaded with a plurality of ball screws 621, and the ball screws 621 are provided with balls, which roll on the adjusting dividing plate 650.

[0064] In an embodiment of the present invention, the adjustment dividing plate 650 rotates together with the handle rod 610. A gear scale can be set on the adjustment dividing plate 650, and an indicator mark can be set on the positioning plate 620. When the user adjusts the weight of the adjustable dumbbell, the user can observe the gear scale corresponding to the indicator mark, which is convenient for the user to perform adjustment operations.

[0065] The positioning plate 620 is threaded with a plurality of ball screws 621. When the handle bar 610 is turned, the adjusting indexing plate 650 will rotate relative to the positioning plate 620, and the balls of the ball screws 621 will roll on the adjusting indexing plate 650. The ball screws 621 can support the adjusting indexing plate 650 and reduce the friction between the adjusting indexing plate 650 and the positioning plate 620. When the balls are worn, the ball screws 621 can be turned to keep the balls rolling on the adjusting indexing plate 650 to make up for the wear gap.

[0066] refer to Fig.12 and 13 Furthermore, a locking hook 410 is provided on the base 40, and a third accommodating cavity is provided on the positioning plate 620, and an anti-mistake slider 622 is slidably connected to the third accommodating cavity. The positioning plate 620 is provided with a channel, which is opposite to the locking hook 410 and communicates with the third accommodating cavity. A second elastic member 623 is provided in the third accommodating cavity, and the second elastic member 623 is located on the side of the anti-mistake slider 622 facing away from the channel. A first anti-mistake hook 651 and a plurality of second anti-mistake hooks 652 are distributed along the circumferential direction on the adjusting indexing plate 650, and a first gap 653 for the locking hook 410 to pass through is provided between any two adjacent second anti-mistake hooks 652, and a second gap 654 for the locking hook 410 to pass through is provided between the first anti-mistake hook 651 and the second anti-mistake hook 652. When the handle assembly 60 is placed on the base 40, after all the weight plate selection assemblies 10 select the corresponding weight plate 50, the handle rod 610 continues to be rotated so that the first anti-mistake hook 651 hooks the locking hook 410.

[0067] In the embodiment of the present invention, when the handle bar 610 is rotated to adjust the weight of the adjustable dumbbell, when the first rotary tongue 210 is not completely screwed into the first fixed groove 510 and the second rotary tongue 220 is not completely screwed into the second fixed groove 520, the anti-mistake hook at least partially faces the second anti-mistake hook 652, and when the user lifts the adjustable dumbbell, the base 40 will be lifted up together, avoiding the situation that the weight plate selection assembly 10 has not completely selected the weight plate 50, and the user uses the adjustable dumbbell for muscle training, thereby ensuring the safety of training. When the first rotary tongue 210 is completely screwed into the first fixed groove 510 and the second rotary tongue 220 is completely screwed into the second fixed groove 520, the first gap 653 or the second gap 654 faces the anti-mistake hook, and when the user lifts the adjustable dumbbell, the base 40 will not be lifted up together.

[0068] When the user needs to move or store the adjustable dumbbell, the user rotates the handle rod 610 so that the locking hook 410 faces the first anti-mistake hook 651. At this time, all the weight plate selection components 10 select the corresponding weight plate 50, and the user can move the entire adjustable dumbbell including the base 40 without having to hold the adjustable dumbbell with one hand and the base 40 with the other hand, which facilitates the overall movement of the adjustable dumbbell.

[0069] Furthermore, each weight plate 50 is provided with a different first mark 540 , and a second mark 420 corresponding to the first mark 540 is provided at the position on the base 40 where the weight plate 50 is placed.

[0070] In the embodiment of the present invention, when placing the weight plate 50 on the base 40, the weight plate 50 can be quickly placed according to the first mark 540 on the weight plate 50 and the second mark 420 at the corresponding position on the base 40, thereby ensuring the accuracy of placing the weight plate 50 on the base 40. The first mark 540 and the second mark 420 can be, but are not limited to, numbers, letters, colors, etc. Fig.11 As shown in FIG. 5 , the first identifier 540 and the second identifier 420 are numbers.

[0071] Furthermore, among two adjacent cams 300 , a second positioning boss 330 is provided on the side of one cam 300 facing the other cam 300 , and the other cam 300 is provided with a second positioning groove 340 for accommodating the second positioning boss 330 , and the second positioning boss 330 on each cam 300 has a different shape.

[0072] In the embodiment of the present invention, when assembling the adjustable dumbbell, the cams 300 need to be arranged in order on the handle bar 610. When arranging the cams 300, only when the cams 300 are arranged in the correct order can the second positioning boss 330 be placed in the second positioning groove 340. If the order of the cams 300 is incorrect, the cams 300 cannot be arranged on the handle bar 610, avoiding the assembly error of the cams 300 on the adjustable dumbbell.

[0073] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An adjustable dumbbell, characterized in that: include: Base; A plurality of weight plate selection components, any of which comprises a fixing member, a driving block and a cam, wherein the driving block is slidably connected to the fixing member, the driving block abuts against the outer edge of the cam under the elastic force of a first elastic member, the fixing member is rotatably connected with a first rotating tongue and a second rotating tongue, the first rotating tongue can be rotated out from one side of the fixing member, and the second rotating tongue can be rotated out from the other side of the fixing member, the cam can rotate relative to the fixing member, and the first rotating tongue and the second rotating tongue are respectively connected to the driving block; A plurality of weight plates, the plurality of weight plates are respectively placed on the base, the weight plates correspond to the weight plate selected components one by one, a first fixing groove is arranged on the weight plate at a position directly opposite to the first rotating tongue, the first rotating tongue is rotated into or out of the first fixing groove from an upper part of the first rotating groove, a second fixing groove is arranged on the weight plate at a position directly opposite to the second rotating tongue, the second rotating tongue is rotated into or out of the second fixing groove from an upper part of the second rotating groove; A handle assembly, comprising a handle rod, the handle rod passing through a plurality of the cams, the cams rotating following the handle rod; The handle rod rotates to drive the cam to rotate relative to the fixing member, the cam rotates to drive the driving block to slide, and the driving block slides to drive the first rotating tongue and the second rotating tongue to rotate out of or into the fixing member synchronously.

2. The adjustable dumbbell according to claim 1, characterized in that: The driving block is provided with a first connecting portion on one side, the first connecting portion is provided with a first sliding cavity, the first rotating tongue is fixedly connected with a first sliding member, and the first sliding member is at least partially located in the first sliding cavity. A second connecting portion is provided on the other side of the driving block, the second connecting portion is provided with a second sliding cavity, the second rotating tongue is fixedly connected to a second sliding member, and the second sliding member is at least partially located in the second sliding cavity.

3. The adjustable dumbbell according to claim 2, characterized in that: A first accommodating cavity is formed on one side of the first rotating tongue, the first connecting portion partially extends into the first accommodating cavity, the first sliding member passes through the first sliding cavity, and both ends of the first sliding member are respectively fixedly connected to the first rotating tongue. A second accommodating cavity is formed on one side of the second rotating tongue, the second connecting portion partially extends into the second accommodating cavity, the second sliding member passes through the second sliding cavity, and both ends of the second sliding member are respectively fixedly connected to the second rotating tongue.

4. The adjustable dumbbell according to claim 1, characterized in that: The driving block is provided with a limiting cavity, the fixing member is fixedly connected to the limiting member, the limiting member is at least partially disposed in the limiting cavity, and the length direction of the limiting cavity is parallel to the sliding direction of the driving block.

5. The adjustable dumbbell according to claim 1, characterized in that: The first elastic member is located at a side of the driving block facing away from the cam.

6. The adjustable dumbbell according to claim 1, characterized in that: The handle assembly includes a positioning plate, an upper decorative block and a side cover, the positioning plate and the side cover are respectively fixedly connected to the upper decorative cover, a plurality of counterweight plates are located between the positioning plate and the side cover, the upper decorative cover is provided with positioning ribs, the positioning ribs are located between any two adjacent counterweight plates, a first positioning boss is provided at the bottom of the fixing member, and the counterweight plate is provided with a first positioning groove for accommodating the first positioning boss.

7. The adjustable dumbbell according to claim 6, characterized in that: The handle assembly includes an adjustment indexing plate, which is fixedly connected to the handle rod and rotatably connected to the positioning plate. The positioning plate is threaded with a plurality of ball screws, and the ball screws are provided with balls, which roll on the adjustment indexing plate.

8. The adjustable dumbbell according to claim 7, characterized in that: The base is provided with a lock hook, the positioning plate is provided with a third accommodating cavity, the third accommodating cavity is slidably connected with an anti-mistake slider, the positioning plate is provided with a channel, the channel is opposite to the lock hook, the channel is communicated with the third accommodating cavity, a second elastic member is provided in the third accommodating cavity, the second elastic member is located on the side of the anti-mistake slider facing away from the channel, the first anti-mistake hook and a plurality of second anti-mistake hooks are distributed along the circumferential direction of the adjusting indexing plate, a first gap for the lock hook to pass through is provided between any two adjacent second anti-mistake hooks, and a second gap for the lock hook to pass through is provided between the first anti-mistake hook and the second anti-mistake hook. When the handle assembly is placed on the base, after all the weight plate selection assemblies select the corresponding weight plates, the handle rod is continuously rotated so that the first anti-mistake hook hooks the locking hook.

9. The adjustable dumbbell according to claim 1, characterized in that: Each of the weight plates is provided with a different first mark, and a second mark corresponding to the first mark is provided at the position on the base where the weight plate is placed.

10. The adjustable dumbbell according to claim 1, characterized in that: Among the two adjacent cams, a second positioning boss is provided on the side of one cam facing the other cam, and the other cam is provided with a second positioning groove for accommodating the second positioning boss, and the second positioning bosses on each cam have different shapes.

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