Weight plate connection structure and training device using the same

Abstract

This invention provides a weight plate connection structure and training equipment that uses the same, comprising a main body provided with a position-restricting block, a connecting locking device and a plurality of weight plates to which the position-restricting block is attached, wherein when the pot bell is in use, the locking device on the weight plate receives and locks the position-restricting block, and when the pot bell is stored, the locking device releases the position-restricting block, allowing the weight plate to detach from the main body or another weight plate.

Description

Technical Field

[0001] The present invention relates to the technical field of exercise equipment, and particularly to a weight plate connection structure and a training device using the same.

Background Art

[0002] A training device having a weight plate structure is usually a simple device for strengthening muscle strength. When performing exercise training with a dumbbell or barbell, various exercises such as pushing, lifting, raising, and squatting can be carried out. Dumbbell, barbell, and barbell training all contribute to the improvement of overall explosive power and are very efficient. Therefore, more and more people prefer to use such training devices for training.

[0003] However, conventional dumbbells or barbells have inconvenient connection between weight plates and are prone to loosening. For example, the weight-adjustable training device disclosed in the US Patent with Publication No. US20110263392A1 takes a lot of time to assemble during use and needs to be fixed by bolts. After long-term use, the weight plates are prone to loosening. Similarly, the weight-adjustable pot-shaped dumbbell disclosed in US Patent No. 7762933 also takes a lot of time to assemble and is similarly time-consuming and laborious.

Summary of the Invention

[0004] In view of the above problems, it is necessary to propose a new training device having a weight plate structure. The training device does not require a lot of time during assembly, and at the same time, the assembly process is simple, the splicing structure is stable, and it is convenient for users to perform various trainings.

[0005] This invention provides a weight plate connection structure including a locking device and a connecting part. The locking device includes an upper base, a lower base fixedly connected to the upper base, and a position limiting disc. The position limiting disc is elastically positioned on the upper base and has a drivable locked position and a released position. The position limiting disc is further provided with a position limiting hole including a limiting portion and a release portion. The lower base is provided with a through hole that limits the passage for an external object to reach the position limiting hole. The connecting part is fixedly connected to the upper base and includes an engaging tongue. When the position limiting disc is in the locked position, the position limiting hole is away from the passage limited by the through hole. When the position limiting disc is in the released position, the position limiting hole is located in the passage limited by the through hole.

[0006] This invention provides a potbell comprising a body and a plurality of weight plates, the body comprising a frame, a central base, and connecting arms connecting the frame and the central base, the central base being provided with a connection position limiting block, the weight plates comprising a hub having an outer shell, an outer ring defined by the outer shell, and extending arms extending outward from the hub and connecting to the outer ring, the hub having a movable chamber to which a locking device is attached, the locking device comprising an upper base, a lower base fixedly connected to the upper base, and a position limiting disc, the position limiting disc being elastically positioned on the upper base and having a drivable locked position and an unlocked position, the position limiting disc having a limiting portion A position-restricting hole is further provided, including a release portion, and the lower base is provided with a through hole that restricts the passage for an external object to reach the position-restricting hole, and the connecting portion is fixedly connected to the upper base and includes an engaging tongue, and when the position-restricting disc is in the locked position the position-restricting hole is away from the passage restricted by the through hole, and when the position-restricting disc is in the released position the position-restricting hole is located in the passage restricted by the through hole, and when the potbell is in use the locking device on the weight plate receives and locks the position-restricting block, and when the potbell is in the stored position the locking device releases the position-restricting block and the weight plate can be separated from the main body or another weight plate.

[0007] This invention provides a barbell comprising a bar and a plurality of weight plates, wherein position limiting blocks are provided at both ends of the bar, and the weight plates include a hub having an outer shell, an outer ring defined by the outer shell, and an extending arm extending outward from the hub and connecting to the outer ring, the hub having a movable chamber to which a locking device is attached, the locking device including an upper base, a lower base fixedly connected to the upper base, and a position limiting disc, the position limiting disc being elastically positioned on the upper base and having a drivable locked position and a released position, the position limiting disc further having a position limiting hole including a limiting portion and a release portion, and the lower The base is provided with a through hole that limits the passage for an external object to reach the position limiting hole, and the connecting part is fixedly connected to the upper base and includes an engaging tongue, and when the position limiting disc is in the locked position the position limiting hole is away from the passage limited by the through hole, and when the position limiting disc is in the released position the position limiting hole is located in the passage limited by the through hole, and when the barbell is in use the locking device on the weight plate receives and locks the position limiting block, and when the barbell is in the stored position the locking device releases the position limiting block and the weight plate can be separated from the main body or another weight plate.

[0008] The beneficial effects of this invention are that it requires little time to assemble, the assembly process is simple, providing users with a more convenient and rapid user experience, the splicing structure is stable, it provides users with diverse training options, and it can meet the diverse needs of users. [Brief explanation of the drawing]

[0009] To more clearly explain the technical solution of this application, the drawings that may be used in the embodiments are briefly described below. The drawings in the following description represent only a few embodiments of this application, and it will be clear to those skilled in the art that other drawings can be obtained based on these drawings without any ingenuity.

[0010] [Figure 1] This is a schematic diagram showing the weight plate removed from the main body. [Figure 2] This is a cross-sectional view of the weight plate after it has been removed from the main body. [Figure 3] This is a schematic diagram of a locking device. [Figure 4] This is a schematic diagram of the connection point. [Figure 5] This is a schematic diagram of a location-limited disk. [Figure 6] This is a schematic diagram of the second end face of the lower base. [Figure 7] This is a schematic diagram of the disassembled state of the weight plate and connecting structure during assembly. [Figure 8] This is a schematic diagram showing the disassembled state of the main unit and the connecting parts during assembly. [Figure 9] This is a schematic diagram of the assembled bars and position limiting blocks. [Figure 10] This is a schematic diagram of the assembly of the other bar and the position limiting block. [Figure 11] This is a schematic diagram of a bar and weight plates. [Figure 12] This is a schematic diagram of the bottom case. [Figure 13] This is a schematic diagram showing the assembly of the pot bell and base case. [Modes for carrying out the invention]

[0011] The following describes the technical concepts in the embodiments of this application clearly and completely with reference to the drawings of the embodiments. It is clear that the embodiments described are only a subset of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art without ingenuity based on the embodiments of this application are included within the scope of this invention.

[0012] In this specification, “Examples” or “Embodiments” means that certain features, structures, or characteristics described with reference to Examples or Embodiments may be included in at least one embodiment of this application. The phrases appearing in each location in this specification do not necessarily all refer to the same example, nor are they mutually exclusive, independent, or substitutable examples. Those skilled in the art will understand, both expressly and implicitly, that the examples described herein may be combined with other examples.

[0013] In this specification, for convenience, terms indicating direction or positional relationships such as "center," "top," "bottom," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are used with reference to the drawings to describe the positional relationships of components. These terms are used solely for the convenience and simplification of the description in this specification and do not indicate or suggest that the specified device or element has a specific direction or must be constructed and operated in a specific direction. Therefore, this disclosure should not be understood as limiting. The positional relationships of components can be modified as appropriate depending on the orientation of the component being described. Accordingly, the terminology used is not limited to that described in the specification and can be modified as appropriate depending on the circumstances.

[0014] As shown in Figures 1 to 8, the present invention provides a splicing-type pot bell comprising a main body 7100, a plurality of weight plates 7200, a position limiting block 2200, and a connecting structure, the connecting structure comprising an upper base 3000, a lower base 4000, a position limiting disc 5000, and an elastic member 6000.

[0015] As shown in Figures 1 and 2, in this embodiment, the weight plate 7200 is divided into three tiers. On both the left and right sides, the two weight plates closest to the main body 7100 are designated as the first tier weight plate 7201, followed by the second tier weight plate 7202 and the third tier weight plate 7203, in order outwards. The weight of the first tier weight plate is the largest, and the weight of the third tier weight plate is the smallest. In other embodiments (not shown), the weight plate 1000 is not limited to three tiers, and the number of tiers of the weight plate 1000 may be two, four, or any other desired number of weight plates to allow the user to train effectively or to provide more options.

[0016] As shown in Figures 1 to 8, in this embodiment, the main body 7100 includes a frame 7101, a central base 7102, and a connecting arm 7103 that connects the frame 7101 and the central base 7102. The central base 7102 is provided with a through hole 7104 and a fitting body 7105 corresponding to the upper base 3000. The upper base 3000 is fixedly connected to the central base 7102 by screws. In other embodiments (not shown), the connection method includes, but is not limited to, screw connections, pin connections, welding, and any other connection method that is in line with the intent.

[0017] As shown in Figures 1 to 8, in this embodiment, a fitting groove 3300 corresponding to the position limiting block 2200 is provided on the first end face of the upper base 3000, and a through hole is provided in the fitting groove 3300, and the central base 7102, the upper base 3000 and the position limiting block 2200 are fixedly connected by screws. In other embodiments (not shown), the connection method includes, but is not limited to, screw connections, and may include pin connections, welding and any other connection method that is in line with the intent.

[0018] As shown in FIGS. 1 to 8, the weight plate 7200 includes a hub 7201 having an outer contour, an outer ring 7203 defined by the outer contour, and an extension arm 7204 extending outward from the hub 7201 and connecting to the outer ring 7203. In this embodiment, the outer ring 7203 is provided as a polygonal closed loop, the hub 7201 is provided as a semi-circular open loop, and the extension arm 7204 extends from both ends of the hub 7201 to the polygonal closed loop.

[0019] In other embodiments (not shown), the outer ring 7203 is not limited to a polygonal closed loop and may be a circular closed loop, a polygonal open loop, or any other desired shape. In other embodiments (not shown), the hub 7201 is not limited to a semi-circular open loop and may be a circular closed loop, a polygonal open loop, or any other desired shape. In other embodiments (not shown), the extension arm 7204 is not limited to extending two from both ends of the hub 7201 and may be any other desired shape.

[0020] As shown in FIG. 7, in this embodiment, the hub 7201 has one movable chamber 7202 to which the locking device 1000 is attached, and the locking mechanism includes an upper base 3000, a lower base 4000, a position limiting disk 5000, and an elastic member 6000.

[0021] As shown in FIGS. 3 to 8, in this embodiment, three hexagonal grooves 3100 are provided on the first end face of the upper base 3000, and a through hole 3200 is provided in the hexagonal groove 3100 for fixing a nut. In this embodiment, a fitting groove 3300 into which the position limiting disk 5000 can be fixed is provided on the inner surface of the upper base 3000, and a protruding edge 3700 for providing a sub-base to the hub 7201 is further provided on the second end face of the upper base 3000.

[0022] As shown in Figures 3 to 8, in this embodiment, the first end face of the lower base 4000 is provided with a projection layer 4400 into which the weight plate hub 7201 can be fitted, and a boss 4500 is provided on the projection layer 4400, the boss 4500 engages with a projection edge 3700 provided on the inner surface of the upper base 3000, providing space for fitting the weight plate hub 7201 and for rotating the position limiting block 2200, the boss 4500 is provided with a position limiting bar 4600 for limiting the movement of the position limiting plate 5000, and three through holes 4200 corresponding to the through hole 3200 are further provided.

[0023] As shown in Figures 3 to 8, in this embodiment, three circular grooves 4300 are provided on the second end face of the lower base 4000. The circular grooves 4300 for fitting hexagonal screws communicate with through holes 4200, and one protruding circular block 4700 is provided. The protruding circular block 4700 corresponds to the sliding groove 3800 on the outer surface of the upper base 3000, and can limit the range of rotation between the upper base 3000 and the lower base 4000. A through hole 4100 for inserting a position limiting block 2200 is provided in the center of the lower base 4000, and the through hole 4100 is provided with a chamfer to facilitate the insertion and removal of the position limiting block 2200. In other embodiments (not shown), the circular grooves 4300 are not limited to circles, but may be triangular, square, or any other desired geometric shape.

[0024] As shown in Figures 4 to 8, in this embodiment, the position limiting block 2200 includes an engaging tongue portion 2100. The shape of the engaging tongue portion 2100 is a "T" shape with two wide sides and a narrower center. In some embodiments (not shown), the engaging tongue portion 2100 may be "Y" shaped, as long as it is a shape that can engage the position limiting block 2200 and the position limiting disk 5000.

[0025] As shown in Figures 1 to 8, in this embodiment, a locking block 5004 is provided at one end of the position limiting disk 5000, and an elastic member 6000 is pivotally attached to the locking block 5004. The elastic member used in this embodiment is a spring, but in other embodiments (not shown), the elastic member is not limited to a spring and may be a leaf spring, a gas spring, or any other elastic structure that is in line with the intent. In this embodiment, the position limiting disk 5000 is provided with a bump 5005, and the position limiting disk 5000 is further provided with a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, the release portion 5003 corresponds to an engaging tongue portion 2100, the limiting portion 5002 limits the rotation range of the engaging tongue portion 2100, when the position limiting disk 5000 is in the locked position the engaging tongue portion 2100 cannot enter the position limiting hole 5001, or the engaging tongue portion 2100 is locked to the limiting portion 5002 and cannot move away from the position limiting hole 5001, when the position limiting disk 5000 is in the release position the engaging tongue portion 2100 can freely enter and exit the position limiting hole 5001 and can rotate to the limiting portion 5002 or the release portion 5003.

[0026] As shown in Figures 1 to 8, in this embodiment, the hub 7201 has a movable chamber 7202 to which the locking device 1000 is attached, the hub 7201 is provided with a connecting base 7205 into which the locking device 1000 can be fitted, the upper base 3000 has at least one hexagonal groove 3100 on its first end face, a through hole 3200 is provided in the hexagonal groove 3100, the upper base 3000 has a fitting groove 3300 that can accommodate the position limiting disk 5000 on its second end face, the connecting base 7205 is provided with a through hole 7206 corresponding to the through hole 3200, the lower base 4000 has at least one through hole 4200 corresponding to the through hole 3200 on its first end face, and the lower base 4000 has a circular groove 4300 that communicates with the through hole 7206 on its second end face, and the hub 7201 and the locking device 1000 are fixedly connected by screws. In other embodiments, the connection configuration is not limited to screw connections, but may include pin connections, welds, and any other connection configuration suitable for the intent.

[0027] As shown in Figures 1 to 8, in this embodiment, a locking block 5004 is provided at one end of the position limiting disk 5000, an elastic member 6000 is pivotally attached to the locking block 5004, a receiving seat 3400 for receiving the elastic member 6000 is provided in the fitting groove 3300, the receiving seat 3400 receives the elastic member 6000 and the locking block 5004 pivotally attached to the elastic member 6000, and the position limiting disk 5000 and the upper base 3000 are elastically connected. A bump 5005 is provided on the position limiting disc 5000, and a movable groove 3500 is provided in the fitting groove 3300 of the upper base 3000 to restrict the vertical movement of the bump 5005. When the bump 5005 contacts the end of the movable groove 3500 closest to the elastic member 6000, the position limiting disc 5000 reaches the release position, and when the bump 5005 contacts the other end of the movable groove 3500, the position limiting disc 5000 reaches the locked position. The position limiting disk 5000 is further provided with a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003. The release portion 5003 corresponds to an engaging tongue portion 2100, and the limiting portion 5002 limits the rotation range of the engaging tongue portion 2100. When the position limiting disk 5000 is in the locked position, the engaging tongue portion 2100 cannot enter the position limiting hole 5001, or the engaging tongue portion 2100 is locked to the limiting portion 5002 and cannot move away from the position limiting hole 5001. When the position limiting disk 5000 is in the release position, the engaging tongue portion 2100 can freely enter and exit the position limiting hole 5001 and can rotate to the limiting portion 5002 or the release portion 5003. The lower base 4000 is provided with a through hole 4100 corresponding to the engaging tongue portion 2100. When the position limiting disk 5000 is in the released position, the through hole 4100 corresponds to the position limiting hole 5001, and the through hole 4100 limits the passage for an external object to reach the position limiting hole 5001. The first end face of the upper base 3000 is provided with a fixing groove 3600 for fixing the connecting portion 2000. The fixing groove 3600 corresponds to the connecting portion 2000, which includes the engaging tongue portion 2100, and the fixing groove 3600 is fixedly connected to the connecting portion 2000 and the engaging tongue portion 2100.When the position restriction disk 5000 is in the locked position, the position restriction hole 5001 is away from the passage restricted by the through hole 4100, and when the position restriction disk 5000 is in the released position, the position restriction hole 5001 is located in the passage restricted by the through hole 4100.

[0028] When the pot bell 7000 is in use, the position limiting block 2200 enters the position limiting hole 5001 in the position limiting disc 5000 through the through hole 4100 in the lower base of the locking device 1000, and the limiting portion 5002 of the position limiting hole 5001 receives and locks the position limiting block 2200. When the pot bell 7000 is in the stored position, the release portion 5003 of the locking device 1000 releases the position limiting block 2200, and the position limiting block 2200 is separated from the main body or another weight plate 7200 through the through hole 4100.

[0029] As shown in Figures 9 to 11, in another embodiment of the present invention, the barbell 8000 includes a bar 8100, a plurality of weight plates 7200, and a connecting structure according to the present invention, wherein at least one pin hole 8101 is provided at both ends of the bar 8100, connecting columns 8200 are provided at both ends of the bar 8100, the connecting columns 8200 are provided with at least one pin hole 8201 corresponding to the pin hole 8101, and the connecting columns 8200 are provided with through holes 8202 corresponding to the position limiting blocks 2200, and the bar 8100 is fixedly connected to the connecting columns 8200 and the position limiting blocks 2200. In other embodiments (not shown), the connection method between the connecting columns and the bar is not limited to pin connections, but may be screw connections, welds, or any other connection method that is in line with the intent. In some embodiments (not shown), the bar may be provided with an anti-slip pattern or other anti-slip device.

[0030] As shown in Figures 9 to 11, when the barbell 8000 is in use, the position limiting block 2200 enters the position limiting hole in the position limiting disc 5000 through the through hole 4100 in the locking device 1000, and the limiting portion 5002 of the position limiting hole 5001 receives and locks the position limiting block 2200. When the barbell 8000 is in storage, the release portion 5003 of the position limiting disc 5000 releases the position limiting block 2200, and the position limiting block 2200 is separated from the bar 8100 or another weight plate 7200 through the through hole 4100.

[0031] As shown in Figures 12 to 13, the present invention is provided with a base case 9000 for mounting, a plurality of pot bell mounting grooves 9001 provided in the base case 9000, a pot bell tray 9002 provided in the pot bell mounting groove 9001 on which the main body 7100 is mounted in the center, a bar mounting groove 9003 is provided, and a locking sheet 9004 for locking the position limiting block 2200 is provided inside the bar mounting groove 9003, allowing the barbell to be further secured. On both sides of the base case 9000 are further provided gripping grooves 9005 for facilitating the insertion and removal of the base, and a base case base 9006 is further provided at the bottom.

[0032] The technical means of this invention are not limited to those disclosed in the embodiments described above, but also include any combination of the technical features described above. Furthermore, those skilled in the art can make several improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered to be within the scope of this invention. [Explanation of symbols]

[0033] 1000, Locking device; 2000, Connecting part; 2100, Engaging tongue; 2200, Position limiting block; 3000, Upper base; 3100, Hexagonal groove; 3200, Through hole; 3300, Fitting groove; 3400, Receiving seat; 3500, Movable groove; 3600, Fixed groove; 3700, Projecting edge; 3800, Sliding groove; 4000, Lower base; 4100, Through hole; 4200, Through hole; 4300, circular groove; 4400, projection layer; 4500, boss; 4600, position limiting bar; 4700, protruding circular block; 5000, position limiting disc; 5001, position limiting hole; 5002, limiting part; 5003, release part; 5004, locking block; 5005, bump; 6000, elastic member; 7000, pot bell; 7100, main body; 7101, frame; 7102, central base; 7103, connecting arm; 7104, through hole; 7105, fitting; 7200, weight plate; 7201, hub; 7202, movable chamber; 7203, outer ring; 7204, extension arm; 7205, connecting base; 7206, through hole; 7201, first weight plate; 7202, second weight plate; 7203, third weight plate; 8000, barbell; 8100, bar; 8101, pin hole; 8200, connecting column; 8201, pin hole; 8202, through hole; 9000, bottom case; 9001, pot bell mounting groove; 9002, pot belt tray; 9003, bar mounting groove; 9004, locking sheet; 9005, gripping groove; 9006, bottom case base.

Claims

1. A weight plate connection structure including a locking device 1000 and a connecting portion 2000, The locking device 1000 includes an upper base 3000, a lower base 4000 fixedly connected to the upper base 3000, and a position limiting disk 5000, the position limiting disk 5000 being elastically positioned on the upper base 3000 and having a drivable locked position and a released position, the position limiting disk 5000 further having a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, the lower base 4000 being provided with a through hole 4100 that limits the passage for an external object to reach the position limiting hole 5001, the connecting portion 2000 being fixedly connected to the upper base 3000 and including an engaging tongue portion 2100, A weight plate connection structure characterized in that when the position limiting disk 5000 is in the locked position, the position limiting hole 5001 is away from the passage limited by the through hole 4100, and when the position limiting disk 5000 is in the released position, the position limiting hole 5001 is located in the passage limited by the through hole 4100.

2. The weight plate connection structure according to claim 1, characterized in that the upper base 3000 has at least one hexagonal groove 3100 on its first end face, a through hole 3200 is provided in the hexagonal groove 3100, the upper base 3000 has a second end face, a fitting groove 3300 capable of accommodating the position limiting disk 5000 is provided, the lower base 4000 has at least one through hole 4200 corresponding to the through hole 3200 on its first end face, the lower base 4000 has a second end face, a circular groove 4300 communicating with the through hole 4200 is provided, and the upper base 3000, the lower base 4000 and the position limiting disk 5000 are fixedly connected by screws.

3. A locking block 5004 is provided at one end of the position limiting disc 5000, an elastic member 6000 is pivotally attached to the locking block 5004, a receiving seat 3400 for receiving the elastic member 6000 is provided in the fitting groove 3300, a bump 5005 is provided on the position limiting disc 5000, a movable groove 3500 is provided in the fitting groove 3300 of the upper base 3000 to restrict the vertical movement of the bump 5005, when the bump 5005 contacts the end of the movable groove 3500 closest to the elastic member 6000, the position limiting disc 5000 reaches a released position, when the bump 5005 contacts the other end of the movable groove 3500, the position limiting disc 5000 reaches a locked position, and the position limiting disc 5000 and the upper base 3000 are elastically connected, as described in claim 2.

4. The position limiting disk 5000 is further provided with a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, wherein the release portion 5003 corresponds to the engaging tongue portion 2100, the limiting portion limits the rotation range of the engaging tongue portion 2100, and when the position limiting disk 5000 is in the locked position, the engaging tongue portion 2100 cannot enter the position limiting hole 5001, or the engaging tongue portion 2100 is locked to the limiting portion 5002 and cannot move away from the position limiting hole 5001, and when the position limiting disk 5000 is in the release position, the engaging tongue portion 2100 can freely move in and out of the position limiting hole 5001 and can rotate to the limiting portion 5002 or the release portion 5003, characterized in that the weight plate connection structure according to claim 3.

5. The weight plate connection structure according to claim 4, characterized in that the lower base 4000 is provided with a through hole 4100 corresponding to the engaging tongue portion 2100, and when the position limiting disk 5000 is in the released position, the through hole 4100 corresponds to the position limiting hole 5001, and the through hole 4100 limits the passage for an external object to reach the position limiting hole 5001.

6. The weight plate connection structure according to claim 5, wherein a fixing groove 3600 for fixing the connecting portion 2000 is provided on the first end face of the upper base 3000, the fixing groove 3600 corresponds to the connecting portion 2000, the connecting portion 2000 includes the engaging tongue portion 2100, and the fixing groove 3600 is fixedly connected to the connecting portion 2000 and the engaging tongue portion 2100.

7. A potbell comprising a main body 7100 and a plurality of weight plates 7200, The main body 7100 includes a frame 7101, a central base 7102, and a connecting arm 7103 that connects the frame 7101 and the central base 7102, and a connection position limiting block 2200 is provided on the central base 7102. The weight plate 7200 includes a hub 7201 having an outer shell, an outer ring 7203 defined by the outer shell, and an extension arm 7204 extending outward from the hub 7201 and connecting to the outer ring 7203, the hub 7201 having a movable chamber 7202 to which a locking device 1000 is attached. The locking device 1000 includes an upper base 3000, a lower base 4000 fixedly connected to the upper base 3000, and a position limiting disk 5000, the position limiting disk 5000 being elastically positioned on the upper base 3000 and having a drivable locked position and a released position, the position limiting disk 5000 further having a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, the lower base 4000 being provided with a through hole 4100 that limits the passage for an external object to reach the position limiting hole 5001, the connecting portion 2000 being fixedly connected to the upper base 3000 and including an engaging tongue portion 2100, When the position limiting disk 5000 is in the locked position, the position limiting hole 5001 is away from the passage limited by the through hole 4100, and when the position limiting disk 5000 is in the released position, the position limiting hole 5001 is located in the passage limited by the through hole 4100. A pot bell characterized in that, when the pot bell 7000 is in use, the locking device 1000 on the weight plate 7200 receives and locks the position limiting block 2200, and when the pot bell 7000 is in storage, the locking device 1000 releases the position limiting block 2200, and the weight plate 7200 can separate from the main body or the other weight plate 7200.

8. The pot bell according to claim 7, characterized in that the central base 7102 is provided with a through hole 7104 and a fitting body 7105 corresponding to the upper base 3000, the first end face of the upper base 3000 is provided with a fitting groove 3300 corresponding to the position limiting block 2200, and the central base 7102, the upper base 3000 and the position limiting block 2200 are fixedly connected.

9. The pot bell according to claim 8, characterized in that the hub 7201 is provided with a connecting base 7205 into which a locking device 1000 can be fitted, at least one hexagonal groove 3100 is provided on the first end face of the upper base 3000, a through hole 3200 is provided in the hexagonal groove 3100, a fitting groove 3300 capable of accommodating the position limiting disk 5000 is provided on the second end face of the upper base 3000, a through hole 7206 corresponding to the through hole 3200 is provided on the connecting base 7205, at least one through hole 4200 corresponding to the through hole 3200 is provided on the first end face of the lower base 4000, a circular groove 4300 communicating with the through hole 7206 is provided on the second end face of the lower base 4000, and the hub 7201 and the locking device 1000 are fixedly connected.

10. A locking block 5004 is provided at one end of the position limiting disc 5000, an elastic member 6000 is pivotally attached to the locking block 5004, a receiving seat 3400 for receiving the elastic member 6000 is provided in the fitting groove 3300, a movable groove 3500 is provided in the fitting groove 3300 of the upper base 3000 to restrict the vertical movement of the bump 5005, when the bump 5005 contacts the end of the movable groove 3500 closest to the elastic member 6000, the position limiting disc 5000 reaches the release position, when the bump 5005 contacts the other end of the movable groove 3500, the position limiting disc 5000 reaches the locked position, and the position limiting disc 5000 and the upper base 3000 are elastically connected, as described in claim 9.

11. The position limiting disk 5000 is further provided with a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, wherein the release portion 5003 corresponds to the engaging tongue portion 2100, the limiting portion limits the rotation range of the engaging tongue portion 2100, and when the position limiting disk 5000 is in the locked position, the engaging tongue portion 2100 cannot enter the position limiting hole 5001, or the engaging tongue portion 2100 is locked to the limiting portion 5002 and cannot move away from the position limiting hole 5001, and when the position limiting disk 5000 is in the release position, the engaging tongue portion 2100 can freely move in and out of the position limiting hole 5001 and can rotate to the limiting portion 5002 or the release portion 5003, as described in claim 10.

12. The pot bell according to claim 11, wherein a fixing groove 3600 for fixing the connecting portion 2000 is provided on the first end face of the upper base 3000, the fixing groove 3600 corresponds to the connecting portion 2000, the connecting portion 2000 includes the engaging tongue portion 2100, and the fixing groove 3600 is fixedly connected to the connecting portion 2000 and the engaging tongue portion 2100.

13. The potbell according to claim 12, characterized in that when the position limiting disk is in the locked position, the position limiting hole 5001 is away from the passage limited by the through hole 4100, and when the position limiting disk 5000 is in the released position, the position limiting hole 5001 is located in the passage limited by the through hole 4100.

14. A barbell comprising a bar 8100 and a plurality of weight plates 7200, Position limiting blocks 2200 are provided at both ends of the bar 8100. The weight plate 7200 includes a hub 7201 having an outer shell, an outer ring 7203 defined by the outer shell, and an extension arm 7204 extending outward from the hub 7201 and connecting to the outer ring 7203, the hub 7201 having a movable chamber 7202 to which a locking device 1000 is attached. The locking device 1000 includes an upper base 3000, a lower base 4000 fixedly connected to the upper base 3000, and a position limiting disk 5000, the position limiting disk 5000 being elastically positioned on the upper base 3000 and having a drivable locked position and a released position, the position limiting disk 5000 further having a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, the lower base 4000 being provided with a through hole 4100 that limits the passage for an external object to reach the position limiting hole 5001, the connecting portion 2000 being fixedly connected to the upper base 3000 and including an engaging tongue portion 2100, When the position limiting disk 5000 is in the locked position, the position limiting hole 5001 is away from the passage limited by the through hole 4100, and when the position limiting disk 5000 is in the released position, the position limiting hole 5001 is located in the passage limited by the through hole 4100. A barbell characterized in that, when the barbell 8000 is in use, the locking device 1000 on the weight plate 7200 receives and locks the position limiting block 2200, and when the barbell 8000 is in storage, the locking device 1000 releases the position limiting block 2200, allowing the weight plate 7200 to separate from the bar 8100 or the other weight plate 7200.

15. The barbell according to claim 14, characterized in that at least one pin hole 8101 is provided at both ends of the bar 8100, connecting columns 8200 are provided at both ends of the bar 8100, at least one pin hole 8201 corresponding to the pin hole 8101 is provided in the connecting column 8200, a through hole 8202 corresponding to the position limiting block 2200 is provided in the connecting column 8200, and the bar 8100, the connecting column 8200 and the position limiting block 2200 are fixedly connected.

16. The barbell according to claim 15, characterized in that the hub 7201 is provided with a connecting base 7205 into which a locking device 1000 can be fitted, at least one hexagonal groove 3100 is provided on the first end face of the upper base 3000, a through hole 3200 is provided in the hexagonal groove 3100, a fitting groove 3300 capable of accommodating the position limiting disc 5000 is provided on the second end face of the upper base 3000, a through hole 7206 corresponding to the through hole 3200 is provided on the connecting base 7205, at least one through hole 4200 corresponding to the through hole 3200 is provided on the first end face of the lower base 4000, a circular groove 4300 communicating with the through hole 7206 is provided on the second end face of the lower base 4000, and the hub 7201 and the locking device 1000 are fixedly connected.

17. A locking block 5004 is provided at one end of the position limiting disc 5000, an elastic member 6000 is pivotally attached to the locking block 5004, a receiving seat 3400 for receiving the elastic member 6000 is provided in the fitting groove 3300, a bump 5005 is provided on the position limiting disc 5000, a movable groove 3500 is provided in the fitting groove 3300 of the upper base 3000 to restrict the vertical movement of the bump 5005, when the bump 5005 contacts the end of the movable groove 3500 closest to the elastic member 6000, the position limiting disc 5000 reaches a released position, when the bump 5005 contacts the other end of the movable groove 3500, the position limiting disc 5000 reaches a locked position, and the position limiting disc 5000 and the upper base 3000 are elastically connected, as described in claim 16.

18. The barbell according to claim 17, wherein the position limiting disk 5000 is further provided with a position limiting hole 5001 including a limiting portion 5002 and a release portion 5003, the release portion 5003 corresponds to the engaging tongue portion 2100, the limiting portion limits the rotation range of the engaging tongue portion 2100, when the position limiting disk 5000 is in the locked position, the engaging tongue portion 2100 cannot enter the position limiting hole 5001, or the engaging tongue portion 2100 is locked to the limiting portion 5002 and cannot move away from the position limiting hole 5001, and when the position limiting disk 5000 is in the release position, the engaging tongue portion 2100 can freely move in and out of the position limiting hole 5001 and can rotate to the limiting portion 5002 or the release portion 5003.

19. The barbell according to claim 18, wherein a fixing groove 3600 for fixing the connecting portion 2000 is provided on the first end face of the upper base 3000, the fixing groove 3600 corresponds to the connecting portion 2000, the connecting portion 2000 includes the engaging tongue portion 2100 and is fixedly connected to the fixing groove 3600, the connecting portion 2000 and the engaging tongue portion 2100.

20. The barbell according to claim 19, characterized in that when the position limiting disk is in the locked position, the position limiting hole 5001 is away from the passage limited by the through hole 4100, and when the position limiting disk 5000 is in the released position, the position limiting hole 5001 is located in the passage limited by the through hole 4100.

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