An adjustable base

Abstract

The utility model discloses an adjustable base, including two counterweight seat for putting counterweight assembly, two the counterweight seat is left and right distribution, two the counterweight seat is through pivot rotation connection between, the counterweight seat is provided with locking piece, when rotating the counterweight seat, makes the bottom surface cooperation of two the counterweight seat form inverted V -shaped, two the counterweight seat is locked cooperation through the locking piece, the advantage is applicable to dumbbell and kettlebell and is placed, and it is convenient for user to take and put kettlebell, and it is helpful to improve user experience.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, and in particular relates to an adjustable base. Background Technology

[0002] Dumbbells and kettlebells are commonly used fitness equipment in workouts. Users use them for core strength training to promote the healthy and coordinated development of various parts of the body. Traditional dumbbells and kettlebells have a simple structure and non-adjustable weights. To meet training needs, users need to purchase dumbbells and kettlebells of different weights, which can be costly. Therefore, adjustable dumbbells and kettlebells with adjustable weights have emerged on the market.

[0003] To further reduce procurement costs, a trainer with freely combinable dumbbells, barbells, and kettlebells, as disclosed in application number CN2023208081641, includes left and right weight assemblies, a weight base, dumbbell bars, barbell bars, kettlebell handles, and buttons. The weight connectors at both ends of the dumbbell bars, together with the left and right weight assemblies, form an adjustable dumbbell; or, the weight connector of the kettlebell handle, together with one of the weight assemblies, forms an adjustable kettlebell. Through these variations, the overall utilization rate of the trainer can be improved. However, in this technical solution, when switching to an adjustable kettlebell, the weight assembly is always vertically placed on the weight base and locked in the weight plate positioning slot. Since the kettlebell handle extends horizontally, it is difficult for the user to lift the kettlebell with one hand while holding the handle. The user needs to lift the kettlebell after the weight plate is disengaged from the positioning slot. After training, it is also difficult to return the kettlebell to the weight base with one hand while holding the handle. The user experience needs improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: one.

[0006] Preferably, the locking element is disposed at the connection between the two counterweights, at the bottom of the counterweights, or on the side of the counterweights.

[0007] Preferably, the side of the counterweight is provided with two connecting arms, the connecting arms on the two counterweights correspond one to one and form two connecting units, the two connecting units are distributed in front of and behind each other, the connecting arms are provided with shaft holes, all the shaft holes are located on the same axis, and the rotating shaft passes through all the shaft holes.

[0008] Preferably, the rotating shaft is provided with a first central hole extending back and forth, the outermost connecting arm is provided with a first through hole, and the connecting arm adjacent to the outermost connecting arm is provided with a second through hole and a third through hole; the locking member includes a first connecting rod, a handle and a first pin, the first connecting rod is slidably engaged with the first central hole, one end of the first connecting rod extends out of the first central hole and is fixedly connected to one end of the handle, the first pin is fixedly disposed at one end of the handle, and the first pin is inserted into the first through hole and the second through hole, or into the first through hole and the third through hole, or only into the first through hole.

[0009] Preferably, there are two locking members arranged in a front-to-back pattern, with one locking member corresponding to the connecting arm located at the front and the other locking member corresponding to the connecting arm located at the rear.

[0010] Preferably, magnets are embedded in the second and third through holes respectively, and when the first pin is inserted into the second or third through hole, the first pin attracts the magnet.

[0011] Preferably, the handle includes a connecting seat and a cover. The connecting seat has a mounting groove on one side, and the cover covers the opening of the mounting groove. The bottom of the mounting groove has a second central hole, a through hole, a first bolt, and a second bolt. The end of the first connecting rod has a first threaded hole communicating with the second central hole. The side of the outermost connecting arm has a second threaded hole communicating with the through hole. The first bolt passes through the second central hole and is threadedly connected to the first threaded hole. The head of the first bolt is pressed against the bottom of the mounting groove. The second bolt passes through the through hole and is threadedly connected to the second threaded hole. A gap is left between the head of the second bolt and the bottom of the mounting groove.

[0012] Preferably, a first annular groove is provided on the side of the outermost connecting arm, the first annular groove is arranged around the outside of the first through hole and the shaft hole, and a first protruding ring is provided on the other side of the connecting seat, the first protruding ring extending into the first annular groove.

[0013] Preferably, the rotating shaft is provided with a third central hole extending front to back, the connecting arm located at the foremost side is provided with a fourth through hole, and the connecting arm adjacent to the connecting arm located at the outermost side is provided with a fifth through hole and a sixth through hole; the locking member includes a second connecting rod, a front end cover, a rear end cover and a second pin, the second connecting rod is slidably engaged with the third central hole, both ends of the second connecting rod extend out of the third central hole and are fixedly connected to the front end cover and the rear end cover respectively, the second pin is fixedly disposed on the rear side of the front end cover, and the second pin is inserted into the fourth through hole and the fifth through hole, or into the fourth through hole and the sixth through hole, or only into the fourth through hole.

[0014] Preferably, a second annular groove is provided on the front side of the connecting arm at the foremost end and the rear side of the connecting arm at the rearmost end. The second annular groove is arranged around the outside of the second through hole and the shaft hole. A second convex ring is provided on the rear side of the front end cover and the front side of the rear end cover. The second convex ring corresponds to the second annular groove and extends into the corresponding second annular groove.

[0015] Preferably, the second convex ring has a first notch and a spring piece located in the first notch on its side. A first locking block is provided on the outward side of the spring piece, and a locking groove is provided on the side wall of the second annular groove. When the second convex ring extends into the corresponding second annular groove, the first locking block located on the side of the second convex ring extends into the corresponding locking groove.

[0016] Preferably, a gap is left between the two connecting units, and a sleeve is fitted on the outer side of the rotating shaft, with the sleeve located between the two connecting units.

[0017] Preferably, one of the connecting arms in the connecting unit is provided with an arc-shaped tooth, the center of which is located on the axis of the rotating shaft, and a first rotating seat is fixedly provided on the other connecting arm in the connecting unit; the locking member includes a paddle, the middle part of which is rotatably connected to the first rotating seat, and a second locking block for inserting into the tooth groove of the tooth is fixedly provided at one end of the paddle.

[0018] Preferably, the connecting arms on the two counterweights are alternately distributed, and the outer side of the front end of the rotating shaft is provided with an external thread; the locking member includes a first knob and a second knob, the front side of the first knob is fixedly connected to the rear end of the rotating shaft, the rear side of the second knob is provided with a third threaded hole, the second knob is threadedly connected to the front end of the rotating shaft, the front side of the first knob and the rear side of the second knob are respectively provided with a third annular groove, and an elastic ring is provided at the third annular groove, the elastic ring extends out of the third annular groove and abuts against the connecting arm.

[0019] Preferably, one of the connecting arms in the connecting unit is provided with a second notch, and another connecting arm in the connecting unit is fixedly provided with a second rotating seat; the locking member includes a lever, one end of which is rotatably connected to the second rotating seat, and the other end of which is used to engage with the second notch.

[0020] Preferably, the bottom surface of the counterweight is provided with a receiving groove, and the locking member includes a connecting plate rotatably disposed in the receiving groove. The connecting plate is provided with a buckle and a snap-fit ​​groove. When the bottom surfaces of the two counterweights fit together to form an inverted V shape, the connecting plate flips outward, and the buckle on one connecting plate snaps into the snap-fit ​​groove on the other connecting plate.

[0021] Preferably, the locking element includes two triangular frames symmetrically distributed on the front and rear sides of the counterweight base. Each triangular frame has a lower end face, two first inclined surfaces, and two side surfaces. A side plate is fixedly provided on the first inclined surface of the triangular frame. At least one limiting block is provided on the side of the side plate facing the counterweight base. Multiple limiting grooves are provided on the side surface of the counterweight base. When the bottom surfaces of the two counterweight bases fit together to form an inverted V-shape, the bottom surface of the counterweight base abuts against the first inclined surface of the triangular frame, the side plate abuts against the side surface of the counterweight base, and the limiting block is inserted into the limiting groove.

[0022] Preferably, the lower end of the counterweight seat on the side away from the rotating shaft is provided with a second inclined surface. When the bottom surfaces of the two counterweight seats are fitted together to form an inverted V-shape, the two second inclined surfaces are located on the same plane.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] 1. The two counterweight seats are connected by a pivot and locked by a locking mechanism. The two counterweight seats can be switched to a flat position for placing dumbbells or to an inverted V-shaped position for placing kettlebells. When switched to the inverted V-shaped position, the counterweight assembly on the counterweight seat will be tilted, and the kettlebell handle connected to the counterweight assembly will also extend upward at an angle. This makes it easier for the user to lift the kettlebell with one hand and also makes it easier to put the kettlebell back on the counterweight base, thus improving the user experience.

[0025] 2. When this adjustable base is used to place the kettlebell in an inverted V-shape, the counterweight assembly on the counterweight base will be tilted, and the kettlebell handle connected to the counterweight assembly will also extend upward at an angle. This can effectively prevent the two kettlebell handles from interfering with each other, and even leave a gap between the two kettlebell handles, making it easier for the user to hold the kettlebell handle and use it more conveniently. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of this utility model when combined with dumbbells;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0029] Figure 4 This is a schematic diagram of the structure of this utility model when equipped with a kettlebell;

[0030] Figure 5 This is a schematic diagram of the structure of the rotating shaft and sleeve in this utility model;

[0031] Figure 6 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the localized explosion structure of this utility model. Figure 1 ;

[0033] Figure 8 This is a cross-sectional structural diagram of the locking component in this utility model;

[0034] Figure 9 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0035] Figure 10 This is a schematic diagram of the localized explosion structure of this utility model. Figure 2 ;

[0036] Figure 11 This is a partial structural diagram of the locking component in this utility model;

[0037] Figure 12 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0038] Figure 13 This is a schematic diagram of the locking component in this utility model;

[0039] Figure 14 This is a schematic diagram of the structure of the present invention. Figure 4 ;

[0040] Figure 15 This is a schematic diagram of the exploded structure of the locking component in this utility model. Figure 1 ;

[0041] Figure 16 This is a schematic diagram of the structure of the present invention. Figure 5 ;

[0042] Figure 17 for Figure 16 Enlarged view of point A in the middle;

[0043] Figure 18 This is a schematic diagram of the structure of the present invention. Figure 6 ;

[0044] Figure 19 This is a schematic diagram of the exploded structure of the locking component in this utility model. Figure 2 ;

[0045] Figure 20 This is a schematic diagram of the structure of the present invention. Figure 7 ;

[0046] Figure 21 This is a schematic diagram of the explosive structure of this utility model. Figure 3 .

[0047] In the diagram: 1. Counterweight; 11. Connecting arm; 1101. Shaft hole; 1102. First through hole; 1103. Second through hole; 1104. Third through hole; 1105. Second screw hole; 1106. First annular groove; 1107. Fourth through hole; 1108. Fifth through hole; 1109. Sixth through hole; 1110. Second annular groove; 1111. Slot; 1112. Tooth; 1113. First 1. Rotating seat; 1114. Second notch; 1115. Second rotating seat; 12. Second inclined surface; 13. Receiving groove; 14. Limiting groove; 2. Rotating shaft; 21. First center hole; 22. Third center hole; 23. External thread; 3. Locking element; 31. First connecting rod; 3101. First screw hole; 32. Handle; 3201. Connecting seat; 3202. Cover; 3203. Mounting groove; 3204. Second center hole; 3205. Through hole; 3206. First bolt; 3207. Second bolt; 3208. First convex ring; 33. First pin; 34. Second connecting rod; 35. Front end cover; 3501. Second convex ring; 3502. First notch; 3503. Spring piece; 3504. First locking block; 36. Rear end cover; 3601. Second convex ring; 37. Second pin; 3801. First rotating... Button; 3802, Second knob; 3803, Third screw hole; 3804, Third annular groove; 3805, Elastic ring; 39, Lever; 3a, Connecting plate; 3a01, Buckle; 3a02, Snap-fit ​​groove; 3b, Tripod; 3b01, First inclined surface; 3b02, Side plate; 3b03, Limiting block; 3c, Paddle; 3c01, Second locking block; 4, Counterweight assembly; 5, Sleeve; 6, Magnet. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Example 1: As Figures 1 to 5 As shown, an adjustable base includes two counterweight seats 1 for placing a counterweight assembly 4. The two counterweight seats 1 are distributed left and right and are rotatably connected by a pivot 2. A locking element 3 is provided on the counterweight seats 1. The locking element 3 is located at the connection between the two counterweight seats 1, at the bottom of the counterweight seats 1, or on the side of the counterweight seats 1.

[0051] Initially, the bottom surfaces of the two counterweights 1 are on the same plane (see...). Figure 1 and Figure 2 The adjustable base is in a flat position, and the weight assemblies 4 placed on the two weight seats 1 can form a dumbbell with the dumbbell bar, which can be used to hold dumbbells; when the weight seats 1 are rotated, the bottom surfaces of the two weight seats 1 fit together to form an inverted V-shape (see...). Figure 3 and Figure 4 When in use, the two weight seats 1 are locked together by locking parts 3. The weight assembly 4 placed on each weight seat 1 can be combined with the kettlebell handle to form a kettlebell, which can be used to hold kettlebells and is compatible with training equipment that can form dumbbells and kettlebells. Of course, when the bottom surfaces of the two weight seats 1 are on the same plane, this adjustable base can also be used directly with regular dumbbells on the market. When the bottom surfaces of the two weight seats 1 are combined to form an inverted V-shape, this adjustable base can also be used directly with regular kettlebells on the market.

[0052] Furthermore, when the bottom surfaces of the two counterweights 1 fit together to form an inverted V-shape, the included angle between the bottom surfaces of the two counterweights 1 is α, 60°≤α≤120°, and α is preferably 90°.

[0053] It should be noted that the counterweight assembly 4 can be one or more counterweight plates, counterweight blocks or counterweight balls. The counterweight assembly 4 is conventional technology in this field and will not be described in detail here.

[0054] Example 2: Figure 1 , Figure 3 and Figure 6As shown, the rest is the same as in Embodiment 1, except that the side of the counterweight 1 is provided with two connecting arms 11. The connecting arms 11 on the two counterweight 1 correspond one-to-one and form two connecting units. The two connecting units are distributed front and back. The connecting arms 11 are provided with shaft holes 1101. All shaft holes 1101 are located on the same axis. The rotating shaft 2 passes through all shaft holes 1101. Preferably, there is a gap between the two connecting units. A sleeve 5 is sleeved on the outside of the rotating shaft 2. The sleeve 5 is located between the two connecting units. The sleeve 5 and the rotating shaft 2 are rotatably engaged, which makes it convenient for the user to hold the sleeve 5 and lift the rotating shaft 2 to cut the two counterweight 1 from the flat position to the inverted V-shaped position, or press down the sleeve 5 to cut the two counterweight 1 from the inverted V-shaped position to the flat position.

[0055] In this embodiment, a second inclined surface 12 is provided at the lower end of the side of the counterweight 1 away from the rotating shaft 2. When the bottom surfaces of the two counterweights 1 fit together to form an inverted V-shape, the two second inclined surfaces 12 are located on the same plane. The second inclined surfaces 12 contact the ground and provide support, resulting in good stability. Furthermore, an anti-slip pad is provided on the second inclined surface 12.

[0056] Example 3: Figures 5 to 7 As shown, the rest of the parts are the same as in Embodiment 2, except that the rotating shaft 2 is provided with a first central hole 21 extending in the front and back, the outermost connecting arm 11 is provided with a first through hole 1102, and the connecting arm 11 adjacent to the outermost connecting arm 11 is provided with a second through hole 1103 and a third through hole 1104.

[0057] In this embodiment, the locking member 3 includes a first connecting rod 31, a handle 32, and a first pin 33. The first connecting rod 31 slides back and forth with the first central hole 21. One end of the first connecting rod 31 extends out of the first central hole 21 and is fixedly connected to one end of the handle 32. The first pin 33 is fixedly disposed at one end of the handle 32. The first pin 33 is inserted into the first through hole 1102 and the second through hole 1103, or into the first through hole 1102 and the third through hole 1104, or only into the first through hole 1102.

[0058] This design uses a push-pull handle 32 to move the first connecting rod 31 back and forth, allowing the first pin 33 to be inserted into the first through hole 1102 and the second through hole 1103 to form a lock, or inserted into both the first through hole 1102 and the third through hole 1104 to form a lock, or only inserted into the first through hole 1102. The structure is simple and easy to operate. It should be noted that when the bottom surfaces of the two counterweights 1 are on the same plane, the first through hole 1102 and the second through hole 1103 are connected; when the bottom surfaces of the two counterweights 1 fit together to form an inverted V-shape, the first through hole 1102 and the third through hole 1104 are connected.

[0059] Example 4: Figures 6 to 8 As shown, the rest of the parts are the same as in Embodiment 3. The difference is that there are two locking members 3, which are distributed in front and behind. One locking member 3 corresponds to the connecting arm 11 located at the front and the other locking member 3 corresponds to the connecting arm 11 located at the rear. The double-sided locking helps to improve the stability of the structure.

[0060] In this embodiment, magnets 6 are respectively embedded in the second through hole 1103 and the third through hole 1104. When the first pin 33 is inserted into the second through hole 1103 or the third through hole 1104, the first pin 33 is attracted to the magnet 6, which prevents the first pin 33 from shifting when not operated manually, and helps to ensure the stability of the structure.

[0061] In this embodiment, the handle 32 includes a connecting seat 3201 and a cover 3202. The connecting seat 3201 has a mounting groove 3203 on one side, and the cover 3202 covers the opening of the mounting groove 3203. The bottom of the mounting groove 3203 has a second central hole 3204, a through hole 3205, a first bolt 3206, and a second bolt 3207. The end of the first connecting rod 31 has a first screw hole 3101 communicating with the second central hole 3204. The side of the outermost connecting arm 11 has a second screw hole 1105 communicating with the through hole 3205. The first bolt 3206 passes through the second central hole 3204 and is threadedly connected to the first screw hole 3101. The head of the first bolt 3206 presses against the bottom of the mounting groove 3203. The second bolt 3207 passes through the through hole 3205 and is threadedly connected to the second screw hole 1105. There is a gap between the head of the second bolt 3207 and the bottom of the mounting groove 3203. In this structure, the connecting seat 3201 is fixedly connected to the first connecting rod 31 by the first bolt 3206, and the connecting seat 3201 is movably connected to the outermost connecting arm 11 by the second bolt 3207. The second bolt 3207 plays a limiting role, which limits the movable distance of the locking member 3 while ensuring that the locking member 3 can move back and forth, and prevents the locking member 3 from disengaging from the connecting arm 11, thus ensuring good reliability.

[0062] In this embodiment, a first annular groove 1106 is provided on the side of the outermost connecting arm 11. The first annular groove 1106 surrounds the outside of the first through hole 1102 and the shaft hole 1101. A first protruding ring 3208 is provided on the other side of the connecting seat 3201. The first protruding ring 3208 extends into the first annular groove 1106. The first protruding ring 3208, the first annular groove 1106, and the rotating shaft 2 are located on the same axis. By providing the first protruding ring 3208 and the first annular groove 1106, the stability of the fit between the connecting seat 3201 and the outermost connecting arm 11 is improved.

[0063] Example 5: Figure 5 , Figures 9 to 11As shown, the rest of the parts are the same as in Embodiment 2, except that the rotating shaft 2 is provided with a third central hole 22 extending along the front and back, the connecting arm 11 located at the frontmost side is provided with a fourth through hole 1107, and the connecting arm 11 adjacent to the connecting arm 11 located at the outermost side is provided with a fifth through hole 1108 and a sixth through hole 1109.

[0064] In this embodiment, the locking member 3 includes a second connecting rod 34, a front end cover 35, a rear end cover 36, and a second pin 37. The second connecting rod 34 is slidably engaged with the third central hole 22. Both ends of the second connecting rod 34 extend out of the third central hole 22 and are fixedly connected to the front end cover 35 and the rear end cover 36, respectively. The second pin 37 is fixedly disposed on the rear side of the front end cover 35. The second pin 37 is inserted into the fourth through hole 1107 and the fifth through hole 1108, or into the fourth through hole 1107 and the sixth through hole 1109, or only into the fourth through hole 1107.

[0065] This design involves pressing the front cover 35 to move the second connecting rod 34 backward, causing the second pin 37 to insert into the fourth through hole 1107 and the fifth through hole 1108 to form a lock, or to insert into the fourth through hole 1107 and the sixth through hole 1109 to form a lock. Pressing the rear cover 36 moves the second connecting rod 34 forward, causing the second pin 37 to insert only into the fourth through hole 1107. The structure is simple and easy to operate. It should be noted that when the bottom surfaces of the two counterweights 1 are on the same plane, the fourth through hole 1107 and the fifth through hole 1108 are connected; when the bottom surfaces of the two counterweights 1 fit together to form an inverted V-shape, the fourth through hole 1107 and the sixth through hole 1109 are connected.

[0066] Example 6: Figures 9 to 11 As shown, the rest of the components are the same as in Embodiment 5, except that a second annular groove 1110 is provided on the front side of the foremost connecting arm 11 and the rear side of the rearmost connecting arm 11. The second annular groove 1110 surrounds the outer side of the fourth through hole 1107 and the shaft hole 1101. A second convex ring 3501 / 3601 is provided on the rear side of the front cover 35 and the front side of the rear cover 36. The second convex ring 3501 / 3601 corresponds to the second annular groove 1110 and extends into the corresponding second annular groove 1110. The second convex ring 3501 / 3601, the second annular groove 1110, and the rotating shaft 2 are located on the same axis. The provision of the second convex ring 3501 / 3601 and the second annular groove 1110 helps to improve the stability of the fit between the front cover 35 and the foremost connecting arm 11, and also helps to improve the stability of the fit between the rear cover 36 and the rearmost connecting arm 11.

[0067] In this embodiment, the second convex ring 3501 / 3601 has a first notch 3502 and a spring piece 3503 located in the first notch 3502 on its side. A first locking block 3504 is provided on the outward side of the spring piece 3503. The side wall of the second annular groove 1110 is provided with a locking groove 1111. When the second convex ring 3501 / 3601 extends into the corresponding second annular groove 1110, the first locking block 3504 located on the side of the second convex ring 3501 / 3601 extends into the corresponding locking groove 1111. This prevents the second connecting rod 34 from moving without human control, thus improving reliability and making it easier for the user to confirm whether the locking member 3 has been switched to the locked state.

[0068] Example 7: Figure 12 and Figure 13 As shown, the rest of the parts are the same as in Embodiment 2. The difference is that one of the connecting arms 11 in the connecting unit is provided with an arc-shaped tooth 1112, the center of which is located on the axis of the rotating shaft 2. The other connecting arm 11 in the connecting unit is fixedly provided with a first rotating seat 1113.

[0069] In this embodiment, the locking component 3 includes a lever 3c, the middle of which is rotatably connected to the first rotating seat 1113. One end of the lever 3c is fixedly provided with a second locking block 3c01 for insertion into the tooth groove of the toothed part 1112. When the second locking block 3c01 is not inserted into the tooth groove of the toothed part 1112, the two counterweights 1 are in an unlocked state. When the bottom surfaces of the two counterweights 1 are on the same plane, or when the bottom surfaces of the two counterweights 1 cooperate to form an inverted V shape, rotating the lever 3c causes the second locking block 3c01 to be inserted into the tooth groove of the toothed part 1112 to form a lock.

[0070] Example 8: Figure 14 and Figure 15 As shown, the rest of the parts are the same as in Embodiment 2, except that the connecting arms 11 on the two counterweights 1 are alternately distributed, and the outer side of the front end of the rotating shaft 2 is provided with an external thread 23.

[0071] In this embodiment, the locking component 3 includes a first knob 3801 and a second knob 3802. The front side of the first knob 3801 is fixedly connected to the rear end of the rotating shaft 2. The rear side of the second knob 3802 is provided with a third screw hole 3803. The second knob 3802 is threadedly connected to the front end of the rotating shaft 2. The front side of the first knob 3801 and the rear side of the second knob 3802 are respectively provided with a third annular groove 3804. An elastic ring 3805 is provided at the third annular groove 3804. The elastic ring 3805 extends out of the third annular groove 3804 and abuts against the connecting arm 11.

[0072] When the second knob 3802 is not tightened, the two counterweights 1 are in the unlocked state. When the bottom surfaces of the two counterweights 1 are on the same plane, or when the bottom surfaces of the two counterweights 1 cooperate to form an inverted V shape, tighten the second knob 3802 to deform the elastic ring 3805 and press the connecting arm 11 to complete the locking.

[0073] Example 9: Figure 16 and Figure 17 As shown, the rest of the parts are the same as in Embodiment 2, except that a second notch 1114 is provided on one connecting arm 11 in the connecting unit, and a second rotating seat 1115 is fixedly provided on the other connecting arm 11 in the connecting unit.

[0074] In this embodiment, the locking component 3 includes a lever 39. One end of the lever 39 is rotatably connected to the second rotating seat 1115, and the other end of the lever 39 is used to engage with the second notch 1114. When the lever 39 is not engaged in the second notch 1114, the two counterweights 1 are in an unlocked state. When the bottom surfaces of the two counterweights 1 mate to form an inverted V-shape, rotating the lever 39 causes the other end of the lever 39 to engage with the second notch 1114 to form a lock.

[0075] Example 10: Figure 18 and Figure 19 As shown, the rest of the parts are the same as in Embodiment 1, except that the bottom surface of the counterweight 1 is provided with a receiving groove 13, and the locking member 3 includes a connecting plate 3a rotatably disposed in the receiving groove 13. The connecting plate 3a is provided with a buckle 3a01 and a snap-fit ​​groove 3a02. When the bottom surfaces of the two counterweights 1 are on the same plane, the connecting plate 3a is accommodated in the corresponding receiving groove 13. When the bottom surfaces of the two counterweights 1 are fitted together to form an inverted V shape, the connecting plate 3a flips outward, and the buckle 3a01 on one connecting plate 3a snaps into the snap-fit ​​groove 3a02 on the other connecting plate 3a to form a triangular structure with good stability.

[0076] Example 11: As Figure 20 and Figure 21 As shown, the rest is the same as in Embodiment 1, except that the locking component 3 includes two triangular frames 3b symmetrically distributed on the front and rear sides of the counterweight seat 1. The triangular frame 3b has a lower end face, two first inclined surfaces 3b01 and two side faces. A side plate 3b02 is fixedly provided on the first inclined surface 3b01 of the triangular frame 3b. At least one limiting block 3b03 is provided on the side of the side plate 3b02 facing the counterweight seat 1. Multiple limiting grooves 14 are provided on the side of the counterweight seat 1. When the bottom surfaces of the two counterweight seats 1 are fitted to form an inverted V shape, the bottom surface of the counterweight seat 1 abuts against the first inclined surface 3b01 of the triangular frame 3b, the side plate 3b02 abuts against the side face of the counterweight seat 1, and the limiting block 3b03 is inserted into the limiting groove 14 to prevent the counterweight seat 1 from rotating.

[0077] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An adjustable base comprising two counterweight seats (1) for placing a counterweight assembly (4), characterized in that: The two counterweights (1) are distributed on the left and right, and are rotatably connected by a pivot (2). The counterweights (1) are provided with locking elements (3). When the counterweights (1) are rotated so that the bottom surfaces of the two counterweights (1) fit together to form an inverted V-shape, the two counterweights (1) are locked together by the locking elements (3).

2. The adjustable base according to claim 1, characterized in that: The locking element (3) is located at the connection between the two counterweights (1), at the bottom of the counterweight (1), or on the side of the counterweight (1).

3. An adjustable base according to claim 1, characterized in that: The counterweight (1) has two connecting arms (11) on its side. The connecting arms (11) on the two counterweights (1) correspond one to one and form two connecting units. The two connecting units are distributed in front and behind. The connecting arms (11) are provided with shaft holes (1101). All the shaft holes (1101) are located on the same axis. The rotating shaft (2) passes through all the shaft holes (1101).

4. An adjustable base according to claim 3, characterized in that: The rotating shaft (2) is provided with a first central hole (21) extending in the front and back, the outermost connecting arm (11) is provided with a first through hole (1102), and the connecting arm (11) adjacent to the outermost connecting arm (11) is provided with a second through hole (1103) and a third through hole (1104). The locking member (3) includes a first connecting rod (31), a handle (32), and a first pin (33). The first connecting rod (31) slides back and forth with the first central hole (21). One end of the first connecting rod (31) extends out of the first central hole (21) and is fixedly connected to one end of the handle (32). The first pin (33) is fixedly disposed at one end of the handle (32). The first pin (33) is inserted into the first through hole (1102) and the second through hole (1103), or into the first through hole (1102) and the third through hole (1104), or only into the first through hole (1102).

5. An adjustable base according to claim 4, characterized in that: Two locking members (3) are provided and are distributed in a front-to-back manner. One locking member (3) corresponds to the connecting arm (11) located at the frontmost side, and the other locking member (3) corresponds to the connecting arm (11) located at the rearmost side.

6. An adjustable base according to claim 4, characterized in that: Magnets (6) are respectively embedded in the second through hole (1103) and the third through hole (1104). When the first pin (33) is inserted into the second through hole (1103) or the third through hole (1104), the first pin (33) attracts the magnet (6).

7. An adjustable base according to claim 4, characterized in that: The handle (32) includes a connecting seat (3201) and a cover (3202). A mounting groove (3203) is provided on one side of the connecting seat (3201). The cover (3202) covers the opening of the mounting groove (3203). A second central hole (3204), a through hole (3205), a first bolt (3206), and a second bolt (3207) are provided at the bottom of the mounting groove (3203). The end of the first connecting rod (31) is provided with a first screw hole (3101) communicating with the second central hole (3204). The outermost part of the handle... The side of the connecting arm (11) is provided with a second screw hole (1105) communicating with the through hole (3205). The first bolt (3206) passes through the second center hole (3204) and is threadedly connected to the first screw hole (3101). The head of the first bolt (3206) is pressed against the bottom of the mounting groove (3203). The second bolt (3207) passes through the through hole (3205) and is threadedly connected to the second screw hole (1105). There is a gap between the head of the second bolt (3207) and the bottom of the mounting groove (3203).

8. An adjustable base according to claim 7, characterized in that: The outermost connecting arm (11) has a first annular groove (1106) on its side. The first annular groove (1106) surrounds the outside of the first through hole (1102) and the shaft hole (1101). The connecting seat (3201) has a first protruding ring (3208) on its other side. The first protruding ring (3208) extends into the first annular groove (1106).

9. An adjustable base according to claim 3, characterized in that: The rotating shaft (2) is provided with a third central hole (22) extending in the front and back, the connecting arm (11) located at the frontmost side is provided with a fourth through hole (1107), and the connecting arm (11) adjacent to the connecting arm (11) located at the outermost side is provided with a fifth through hole (1108) and a sixth through hole (1109). The locking component (3) includes a second connecting rod (34), a front end cover (35), a rear end cover (36), and a second pin (37). The second connecting rod (34) slides back and forth with the third central hole (22). The two ends of the second connecting rod (34) extend out of the third central hole (22) and are fixedly connected to the front end cover (35) and the rear end cover (36). The second pin (37) is fixedly disposed on the rear side of the front end cover (35). The second pin (37) is inserted into the fourth through hole (1107) and the fifth through hole (1108), or into the fourth through hole (1107) and the sixth through hole (1109), or only into the fourth through hole (1107).

10. An adjustable base according to claim 9, characterized in that: A second annular groove (1110) is provided on the front side of the connecting arm (11) at the foremost end and the rear side of the connecting arm (11) at the rearmost end. The second annular groove (1110) surrounds the fourth through hole (1107) and the shaft hole (1101) on the outside. A second convex ring (3501 / 3601) is provided on the rear side of the front end cover (35) and the front side of the rear end cover (36). The second convex ring (3501 / 3601) corresponds to the second annular groove (1110) and extends into the corresponding second annular groove (1110).

11. An adjustable base according to claim 10, characterized in that: The second convex ring (3501 / 3601) has a first notch (3502) and a spring piece (3503) located in the first notch (3502) on its side. A first locking block (3504) is provided on the outward side of the spring piece (3503). The side wall of the second annular groove (1110) is provided with a locking groove (1111). When the second convex ring (3501 / 3601) extends into the corresponding second annular groove (1110), the first locking block (3504) located on the side of the second convex ring (3501 / 3601) extends into the corresponding locking groove (1111).

12. An adjustable base according to claim 3, characterized in that: A gap is left between the two connecting units, and a sleeve (5) is sleeved on the outside of the rotating shaft (2), and the sleeve (5) is located between the two connecting units.

13. An adjustable base according to claim 3, characterized in that: An arc-shaped tooth (1112) is provided on one of the connecting arms (11) in the connecting unit, and the center of the tooth (1112) is located on the axis of the rotating shaft (2). A first rotating seat (1113) is fixedly provided on the other connecting arm (11) in the connecting unit. The locking member (3) includes a paddle (3c), the middle part of which is rotatably connected to the first rotating seat (1113), and one end of the paddle (3c) is fixedly provided with a second locking block (3c01) for insertion into the tooth groove of the tooth (1112).

14. An adjustable base according to claim 3, characterized in that: The connecting arms (11) on the two counterweights (1) are alternately distributed, and the outer side of the front end of the rotating shaft (2) is provided with an external thread (23); The locking component (3) includes a first knob (3801) and a second knob (3802). The front side of the first knob (3801) is fixedly connected to the rear end of the rotating shaft (2). The rear side of the second knob (3802) is provided with a third screw hole (3803). The second knob (3802) is threadedly connected to the front end of the rotating shaft (2). The front side of the first knob (3801) and the rear side of the second knob (3802) are respectively provided with a third annular groove (3804). An elastic ring (3805) is provided at the third annular groove (3804). The elastic ring (3805) extends out of the third annular groove (3804) and abuts against the connecting arm (11).

15. An adjustable base according to claim 3, characterized in that: A second notch (1114) is provided on one of the connecting arms (11) in the connecting unit, and a second rotating seat (1115) is fixedly provided on the other connecting arm (11) in the connecting unit; The locking member (3) includes a lever (39), one end of which is rotatably connected to the second rotating seat (1115), and the other end of which is used to engage with the second notch (1114).

16. An adjustable base according to claim 1, characterized in that: The bottom surface of the counterweight (1) is provided with a receiving groove (13). The locking member (3) includes a connecting plate (3a) rotatably disposed in the receiving groove (13). The connecting plate (3a) is provided with a buckle (3a01) and a snap-fit ​​groove (3a02). When the bottom surfaces of the two counterweights (1) are fitted together to form an inverted V shape, the connecting plate (3a) flips outward, and the buckle (3a01) on one connecting plate (3a) snaps into the snap-fit ​​groove (3a02) on the other connecting plate (3a).

17. An adjustable base according to claim 1, characterized in that: The locking component (3) includes two tripods (3b) symmetrically distributed on the front and rear sides of the counterweight (1). Each tripod (3b) has a lower end face, two first inclined surfaces (3b01), and two side faces. A side plate (3b02) is fixedly provided on the first inclined surface (3b01) of the tripod (3b). At least one limiting block (3b03) is provided on the side of the side plate (3b02) facing the counterweight (1). Multiple limiting grooves (14) are provided on the side of the counterweight (1). When the bottom surfaces of the two counterweights (1) are fitted together to form an inverted V-shape, the bottom surface of the counterweight (1) abuts against the first inclined surface (3b01) of the tripod (3b), the side plate (3b02) abuts against the side face of the counterweight (1), and the limiting block (3b03) is inserted into the limiting groove (14).

18. An adjustable base according to claim 1, characterized in that: The lower end of the counterweight seat (1) away from the rotating shaft (2) is provided with a second inclined surface (12). When the bottom surfaces of the two counterweight seats (1) are combined to form an inverted V shape, the two second inclined surfaces (12) are located on the same plane.

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