Dumbbell with balancing weights convenient to disassemble and assemble

Abstract

The utility model belongs to the technical field of sports equipment, and discloses a dumbbell with balancing weights convenient to disassemble and assemble. Comprising a center rod, mounting bases are connected to the two ends of the center rod, the center rod further comprises a base and balancing weights, each mounting base is provided with a plurality of mounting cavities, and the balancing weights and the mounting cavities are hung or detached through rotation of the center rod; the guide shaft penetrates through the mounting seat and is connected with the center rod, at least one annular guide groove and a compound counterweight guide groove are formed in the peripheral surface of the guide shaft, and each guide groove corresponds to one mounting cavity; the periphery of the guide shaft is sleeved with an adapting part corresponding to the annular guide groove, and the adapting part is provided with a guide structure assembled with the annular guide groove and used for achieving installation of the balancing weight and the installation base. The guide shaft with the annular guide groove is rotationally connected with the center rod, and the switching part matched with the annular guide groove achieves path change along with rotation of the center rod and moves in the direction close to or away from the center rod, so that mounting or dismounting of the balancing weight is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sports equipment, in particular to a dumbbell with a weight block that is easy to disassemble. Background Art

[0002] Dumbbells are an auxiliary equipment for weightlifting and fitness exercises, used to enhance muscle strength training. Due to their bell-shaped structure, they make no sound during exercise, hence the name dumbbell. In order to improve the applicability of dumbbells and adapt them to groups with different weight requirements, dumbbells with adjustable weights have emerged. An easily detachable dumbbell comprises a center rod, a retaining ring, a counterweight and a locking piece. The retaining ring is fixed at both ends of the center rod, and a number of counterweights are sleeved at both ends of the center rod, with one side of the counterweight resting on the retaining ring. The locking piece is arranged on the other side of the counterweight and is tightly fixed to the end of the center rod. When removing the inner counterweight, all the counterweights need to be removed before they can be disassembled and replaced. The disassembly process is cumbersome and difficult to operate. Utility Model Content

[0003] In order to solve the above technical problems, a dumbbell with easy-to-disassemble weight blocks is provided.

[0004] To achieve the above objectives, the present invention adopts a technical solution: a dumbbell with easily removable counterweights, comprising a central rod providing a hand-held area, with a mounting base having a counterweight mounting cavity connected at both ends thereof, a base for placing the entire dumbbell, and counterweights placed on the base surface. The mounting base is characterized in that the mounting base has multiple mounting cavities arranged along its axial direction for mounting counterweights, and the counterweights are attached to or removed from the mounting cavities by rotating the central rod.

[0005] The guide shaft is connected to the mounting seat and the center rod, and the outer circumference of the guide shaft is provided with at least one annular guide groove and a composite weight guide groove, which are distributed along the axial direction of the guide shaft, and each guide groove corresponds to a mounting cavity;

[0006] The outer periphery of the guide shaft is sleeved with a transition portion corresponding to the annular guide groove, and the transition portion is provided with a guide structure assembled with the annular guide groove for realizing the installation of the counterweight block and the mounting seat.

[0007] According to the utility model, further, the guide structure includes a guide column connected to the adapter part, one end of the guide column cooperates with the corresponding annular guide groove. As the guide shaft rotates, the guide column drives the adapter part to change the direction of the notch along the annular guide groove, moving away from or close to the counterweight block to be assembled, thereby realizing the disassembly and assembly of the counterweight block.

[0008] According to the present invention, further, there are five annular guide grooves, which are distributed from the direction close to the center rod to the direction away from the center rod, namely the first guide groove, the second guide groove, the third guide groove, the fourth guide groove and the fifth guide groove;

[0009] The first guide groove is formed by the V-shaped segment and the first arc segment to form an annular guide groove, and the opening of the V-shaped segment points away from one end of the center rod;

[0010] The second guide groove is formed by the U-shaped segment and the second arc segment to form an annular guide groove. The opening of the U-shaped segment points away from the end of the center rod, and the opening width of the U-shaped segment is greater than the opening width of the V-shaped segment. The second guide groove is staggered with the outline of the first guide groove.

[0011] The third guide groove is formed into an annular guide groove by the slope section and the third arc section. The slope section is inclined in the same direction as the vertical portion of the U-shaped section. The slope section is located on one side of the opening of the U-shaped section.

[0012] The fourth guide groove has the same structure as the second guide groove, but has an opening in the opposite direction. The opening of the fourth guide groove is staggered with the opening of the second guide groove.

[0013] The fifth guide groove is in the shape of a broken line formed by connecting the tail ends of a plurality of V-shaped segments and U-shaped segments, and is used for hanging a composite counterweight.

[0014] According to the present invention, further, the end of the center rod is additionally provided with a square block sleeved with its outer periphery, and the end of the guide shaft is provided with a square through hole matched with the square block, so as to achieve the connection and fixation between the two.

[0015] According to the utility model, further, a notch with a vertical inner wall is formed on the top of the counterweight block, and the vertical inner wall forms a concave arc, and the concave arc openings on both sides are arranged opposite to each other to form an accommodating cavity for accommodating the adapter.

[0016] According to the present invention, further, the end of the center rod is sleeved with an end plate, the end plate has a cavity, the cavity is facing the side away from the center rod, the inner wall of the cavity is provided with blocking blocks evenly distributed along its circumference, and there is a gap between two adjacent blocking blocks;

[0017] It also includes a locking block that cooperates with the gap, one end of the locking block is fixedly connected to a vertically upward spring, the spring is fixedly connected to the center rod, and the other end of the locking block is in contact with the base; in the initial state, the spring is in a compressed state, the locking block is away from the gap, and the center rod is rotated to disassemble the weight block; in the assembled state, the external force of the spring disappears, and the locking block is embedded in the gap to lock the center rod.

[0018] Compared with the prior art, the beneficial effect of the present invention is that the guide shaft with the annular guide groove is rotatably connected to the center rod, and the adapter part that cooperates with the annular guide groove changes the path as the center rod rotates, moving toward or away from the center rod to realize the installation or disassembly of the counterweight block.

[0019] A fifth guide slot is added for hanging composite counterweights with different counterweights, making it possible to assemble more counterweights and improving its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the exploded structure of a dumbbell with easy-to-disassemble weight blocks according to the present invention;

[0021] FIG2 is a schematic diagram of the structure of a dumbbell with easy-to-disassemble weight blocks according to the present invention;

[0022] FIG3 is a schematic diagram of the AA cross-sectional structure of FIG2;

[0023] Figure 4 This is a schematic structural diagram of the guide shaft of the present invention from a first perspective;

[0024] FIG5 is a schematic structural diagram of the guide shaft of the present invention from a second viewing angle;

[0025] FIG6 is a schematic structural diagram of the guide shaft of the present invention from a third perspective.

[0026] Among them, 100-center rod, 110-square block, 120-end plate, 121-blocking block, 200-counterweight block, 210-U-shaped notch, 300-mounting seat, 310-mounting cavity, 400-base, 500-guide shaft, 510-first guide groove, 511-V-shaped section, 512-first arc section, 520-second guide groove, 521-U-shaped section, 522-second arc section, 530-third guide groove, 531-ramp section, 532-third arc section, 540-fourth guide groove, 550-fifth guide groove, 600-transfer part, 610-guide column, 700-complex counterweight, 800-locking block, 810-spring. DETAILED DESCRIPTION

[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0028] As shown in Figures 2 and 3, a dumbbell with easily removable weights includes a central rod 100 that provides a gripping area. Connected to both ends of the central rod 100 are identical mounting bases 300 with mounting cavities for weights, a base 400 for placing the dumbbell, and weights 200 placed on the surface of the base 400. By rotating the central rod 100, the number of weights 200 installed in the mounting cavities of the mounting base 300 can be adjusted, allowing different weights 200 to be installed or removed.

[0029] Specifically, as shown in Figure 1, the mounting base 300 is an elongated column with multiple mounting cavities 310 for mounting the counterweight 200 arranged along its axial direction. The mounting cavity 310 closest to the center rod 100 is considered the first mounting cavity, and the second, third, and finally Nth mounting cavities are sequentially arranged along its axis. With one rotation of the center rod 100, the first mounting cavity is assembled and connected to the counterweight 200. With another rotation, the second mounting cavity is assembled and connected to the corresponding counterweight 200. As the center rod 100 rotates, all mounting cavities 300 are assembled and connected to the corresponding counterweight 200, until all mounting cavities 300 are assembled and connected after one complete rotation of the center rod 100. To remove the counterweight 200, simply rotate the center rod 100 in the opposite direction.

[0030] Among them, it also includes a guide shaft 500 that passes through the mounting seat 300 and is connected to the center rod 100. The outer peripheral surface of the guide shaft 500 is provided with a plurality of annular guide grooves, and the plurality of annular guide grooves are distributed along its axial direction, and each annular guide groove corresponds to a mounting cavity; the outer periphery of the guide shaft 500 is provided with a connecting part 600 corresponding to the annular guide groove, and the connecting part 600 is used to realize the installation of the counterweight block 200 and the mounting seat 300; the connecting part 600 is provided with a guide column 610, one end of the guide column 610 cooperates with the corresponding annular guide groove. As the guide shaft 500 rotates, the guide column 610 drives the connecting part 600 to change the direction of the notch along the annular guide groove, moving away from or close to the counterweight block 200 to be assembled, thereby realizing the assembly of the counterweight block 200.

[0031] In order to improve the connection firmness between the center rod 100 and the guide shaft 500 and prevent the center rod 100 from being separated from the guide shaft 500 during rotation, a square block 120 is added to the end of the center rod 100 and is sleeved on its outer periphery, and a square through hole is provided at the end of the guide shaft 500 to cooperate with the square block 120 to achieve the connection and fixation between the two.

[0032] In this embodiment, as shown in Figures 4-6, the annular guide grooves are, from the direction close to the center rod 100 to the direction away from the center rod 100, the first guide groove 510, the second guide groove 520, the third guide groove 530, the fourth guide groove 540 and the fifth guide groove 550 in sequence; wherein, the first guide groove 510 is formed by the V-shaped segment 511 and the first arc segment 512 to form an annular guide groove, and the opening of the V-shaped segment 511 points to the end away from the center rod 110; the second guide groove 520 The U-shaped section 521 and the second arc section 512 together form an annular guide groove, the opening of the U-shaped section 521 points to the end away from the center rod 110, and the opening width of the U-shaped section 521 is greater than the opening width of the V-shaped section 511, and the outline of the first guide groove 510 is staggered to avoid the overlap of the two guide grooves 520, resulting in failure of one of the guide grooves to hang the counterweight 200 and a missing hanging problem; the third guide groove 530 is formed into an annular guide groove by the slope section 531 and the third arc section 532, the inclination direction of the slope section 531 is consistent with the inclination direction of the vertical part of the U-shaped section 521, and the slope section 531 is located on one side of the opening of the U-shaped section 521; the fourth guide groove 540 has the same structure as the second guide groove 520, but the opening direction is opposite. The opening of the fourth guide groove 540 is staggered with the opening of the second guide groove 520 and does not correspond to each other, so as to avoid missing hanging problems; the fifth guide groove 550 is formed by multiple V The broken line formed by the ends of the shaped section and the U-shaped section is used to hang the compound counterweight 700. The weight of the compound counterweight 700 is less than the weight of the counterweight block 200. When the weight of one counterweight block 200 is light and the weight of two counterweight blocks 200 is heavy, the compound counterweight 700 is placed at the corresponding position of the fifth guide groove 550 to achieve a counterweight weight between one counterweight block and two counterweight blocks, thereby achieving more counterweight weight options, improving the applicability of the dumbbell, and being more suitable for groups with more demands for multiple counterweights.

[0033] It is explained here that the number of annular guide grooves can be adjusted according to the number of counterweight blocks 200 to be assembled; if the number of counterweight blocks 200 to be assembled is large, more annular guide grooves are added, and vice versa.

[0034] In this embodiment, if Figure 1 As shown, a U-shaped notch 210 is formed on the top of the counterweight block 200. The U-shaped notch 210 is U-shaped, and the vertical inner wall forms a concave arc. The concave arc openings on both sides are arranged opposite to each other to form a receiving cavity for accommodating the adapter 600.

[0035] In this embodiment, end plates 120 with cavities are further provided at both ends of the center rod 100. The adjustment poundage is engraved on the opposite surfaces of the end plates 120 to facilitate viewing during the adjustment process; the inner wall of the cavity of the end plates 120 is provided with blocking blocks 121 evenly distributed along its circumference, and there is a gap between two adjacent blocking blocks 121; and a locking block 800 is also included to cooperate with the gap. One end of the locking block 800 is fixedly connected to a vertically upward spring 810, and the spring 810 is fixedly connected to the center rod 200. The other end of the locking block 800 is connected to the unlocking block of the base 400 (see FIG. (not shown); in the initial state, that is, when the counterweight 400 is placed on the base 1, the bottom surface of the locking block 800 is in contact with the unlocking block, and the unlocking block applies an upward force to the locking block 700. The locking block 800 is in a compressed state and away from the gap between the two blocking blocks 121, and the center rod 200 can rotate; when the dumbbell leaves the base 400, the locking block 800 releases the elastic force downward under the action of the spring 810, and the locking block 121 falls into the gap between the two blocking blocks 121, limiting the circumferential rotation of the center rod 100, thereby achieving the effect of locking the center rod 100.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A dumbbell with easily removable counterweights, comprising a central rod providing a gripping area, with mounting bases having identical structures and counterweight mounting cavities connected at both ends of the central rod, a base for placing the dumbbell, and counterweights placed on the base surface, characterized in that: The mounting seat has a plurality of mounting cavities arranged along its axial direction for mounting the counterweight block, and the counterweight block is attached to or detached from the mounting cavity by rotating the central rod; The guide shaft is connected to the mounting seat and the center rod, and the outer circumference of the guide shaft is provided with at least one annular guide groove and a composite weight guide groove, which are distributed along the axial direction of the guide shaft, and each guide groove corresponds to a mounting cavity; The outer periphery of the guide shaft is sleeved with a transition portion corresponding to the annular guide groove, and the transition portion is provided with a guide structure assembled with the annular guide groove for realizing the installation of the counterweight block and the mounting seat.

2. The dumbbell with easily disassembled weights according to claim 1, characterized in that: The guide structure includes a guide column connected to the adapter part, one end of which cooperates with the corresponding annular guide groove. As the guide shaft rotates, the guide column drives the adapter part to change the direction of the notch of the annular guide groove, moving away from or close to the counterweight block to be assembled, thereby realizing the disassembly and assembly of the counterweight block.

3. The dumbbell with easily disassembled weights according to claim 1 or 2, characterized in that: There are five annular guide grooves, which are the first guide groove, the second guide groove, the third guide groove, the fourth guide groove and the fifth guide groove from the direction close to the center rod to the direction away from the center rod; The first guide groove is formed by the V-shaped segment and the first arc segment to form an annular guide groove, and the opening of the V-shaped segment points away from one end of the center rod; The second guide groove is formed by the U-shaped segment and the second arc segment to form an annular guide groove. The opening of the U-shaped segment points away from the end of the center rod, and the opening width of the U-shaped segment is greater than the opening width of the V-shaped segment. The second guide groove is staggered with the outline of the first guide groove. The third guide groove is formed into an annular guide groove by the slope section and the third arc section. The slope section is inclined in the same direction as the vertical portion of the U-shaped section. The slope section is located on one side of the opening of the U-shaped section. The fourth guide groove has the same structure as the second guide groove, but has an opening in the opposite direction. The opening of the fourth guide groove is staggered with the opening of the second guide groove. The fifth guide groove is in the shape of a broken line formed by connecting the tail ends of a plurality of V-shaped segments and U-shaped segments, and is used for hanging a composite counterweight.

4. The dumbbell with easily disassembled weights according to claim 1, characterized in that: The end of the center rod is additionally provided with a square block sleeved with its outer periphery, and the end of the guide shaft is provided with a square through hole matched with the square block, so that the two are connected and fixed.

5. The dumbbell with easily disassembled weights according to claim 1, characterized in that: A notch with a vertical inner wall is formed on the top of the counterweight block, and the vertical inner wall forms a concave arc. The concave arc openings on both sides are arranged opposite to each other to form an accommodating cavity for accommodating the adapter.

6. The dumbbell with easily disassembled weights according to claim 1, characterized in that: The end of the central rod is sleeved with an end plate, which has a cavity. The cavity faces the side away from the central rod. The inner wall of the cavity is provided with blocking blocks evenly distributed along its circumference, and there is a gap between two adjacent blocking blocks. The invention also includes a locking block that cooperates with the gap, one end of which is fixedly connected to a spring that is vertically upward, and the spring is fixedly connected to the center rod, and the other end of the locking block contacts the base; in the initial state, the spring is in a compressed state, the locking block is away from the gap, and the center rod is rotated to disassemble the counterweight; After assembly, the external force of the spring disappears, and the locking block is embedded in the gap to lock the center rod.

Images