Dumbbell and method for disassembling and assembling the same

Abstract

The present application belongs to the technical field of sports equipment, and discloses a dumbbell with weight blocks convenient to disassemble and assemble and a disassembly and assembly method thereof. The dumbbell comprises a center rod, mounting seats connected to two ends of the center rod, a base and weight blocks. The mounting seat has a plurality of mounting cavities, and the weight blocks are hung or dismounted from the mounting cavities through rotation of the center rod. The dumbbell further comprises a guide shaft penetrating through the mounting seat and connected to the center rod, and the outer circumferential surface of the guide shaft is provided with at least one annular guide groove and one complex weight guide groove, each guide groove corresponding to one mounting cavity. An adapter part corresponding to the annular guide groove is sleeved on the outer circumference of the guide shaft, and the adapter part is provided with a guide structure assembled with the annular guide groove, for realizing mounting of the weight blocks and the mounting seat. The guide shaft with the annular guide groove is rotationally connected to the center rod, and the adapter part matched with the annular guide groove changes the path and moves towards or away from the center rod with rotation of the center rod, realizing mounting or dismounting of the weight blocks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sports equipment, in particular to a guide shaft, a dumbbell and a dumbbell weight block dismounting method. BACKGROUND

[0002] Dumbbell is a kind of auxiliary equipment for weight lifting and body building, which is used for muscle strength training. Since the structure of dumbbell is bell-shaped, no sound is produced during exercise, so it is named dumbbell. In order to improve the applicability of dumbbell and make it adapt to different groups with different weight requirements, adjustable weight dumbbell appears. One kind of easy-to-disassemble dumbbell comprises a center rod, a retaining ring, weights and a locking member. The retaining ring is fixed at both ends of the center rod, a plurality of weights are sleeved at the end portions of the center rod and abut against the retaining ring on one side, and the locking member is arranged on the other side of the weight and is tightly sleeved and fixed at the end portion of the center rod. When the weights inside are disassembled, all the weights need to be removed before disassembly and replacement, which is complicated and not easy to operate. SUMMARY

[0003] To solve the above technical problems, a guide shaft for conveniently dismounting and assembling weight blocks is provided.

[0004] To achieve the first purpose, the technical scheme adopted by the present application is as follows: a guide shaft comprises a guide shaft body, and at least two annular guide grooves and one complex weight guide groove are arranged on the outer circumferential surface of the guide shaft body along the axial direction.

[0005] The groove profile of the annular guide groove has a wave crest, and the wave crests of the grooves of two adjacent annular guide grooves are staggered. The adapter of the dumbbell is away from or close to the weight block to be assembled, so as to realize the dismounting and assembling of the weight block.

[0006] According to the present application, further, the annular guide groove is five, which is distributed from the direction close to the center rod to the direction away from the center rod, and is sequentially the first guide groove, the second guide groove, the third guide groove, the fourth guide groove and the fifth guide groove.

[0007] The first guide groove is formed by a V-shaped segment and a first arc-shaped segment, and the opening of the V-shaped segment points to the end away from the center rod.

[0008] The second guide groove is formed by a U-shaped segment and a second arc-shaped segment, and the opening of the U-shaped segment points to the end away from the center rod. The opening width of the U-shaped segment is greater than that of the V-shaped segment, and the profile of the first guide groove is staggered.

[0009] The third guide groove is formed by a slope segment and a third arc-shaped segment, and the inclination direction of the slope segment is consistent with that of the vertical part of the U-shaped segment. The slope segment is located at one side of the opening of the U-shaped segment.

[0010] The fourth guide slot is identical in structure with the second guide slot, and the opening direction is opposite, and the opening of the fourth guide slot is staggered with the opening of the second guide slot.

[0011] The fifth guide slot is a zigzag line formed by a plurality of V-shaped segments and U-shaped segments, and is used for hanging the complex weight.

[0012] In order to achieve the second object of the present application, the present application further provides a dumbbell convenient for dismounting and mounting the weight, comprising an adapter corresponding to the annular guide slot of the guide shaft, the adapter is provided with a guide structure matched with the annular guide slot, and is used for mounting the weight block and the mounting base.

[0013] According to the present application, further, a central rod providing a hand-holding area is further included, two ends of the central rod are connected with the mounting base having the weight block mounting cavity and the base for placing the whole dumbbell and the weight block placed on the surface of the base, the mounting base has a plurality of mounting cavities arranged along the axial direction thereof for mounting the weight block, and the mounting and dismounting of the weight block and the mounting cavity are realized through the rotation of the central rod.

[0014] According to the present application, further, the guide structure comprises a guide column connected with the adapter, one end of the guide column is matched with the corresponding annular guide slot, along with the rotation of the guide shaft, the guide column drives the adapter to change the direction of the slot opening of the annular guide slot, and the adapter is away from or close to the weight block to be mounted, thereby realizing the mounting and dismounting of the weight block.

[0015] According to the present application, further, the top of the weight block is formed with a notch having a vertical inner wall, the vertical inner wall forms a concave arc, and the openings of the two concave arcs are oppositely arranged to form a receiving cavity for accommodating the adapter.

[0016] In order to achieve the third object of the present application, the present application further provides a mounting and dismounting method of the dumbbell convenient for mounting and dismounting the weight block, comprising the following steps.

[0017] Placing the weight block on the base;

[0018] Passing the guide shaft through the mounting base to connect with the central rod;

[0019] Matching the annular guide slot provided with the guide structure with the adapter arranged on the outer periphery of the guide shaft;

[0020] Rotating the central rod to drive the guide shaft to rotate, and the guide structure drives the adapter to change the direction of the slot opening of the annular guide slot, and the adapter is away from or close to the weight block to be mounted, thereby realizing the mounting and dismounting of the weight block.

[0021] Further, in the mounted state, as the central rod rotates, the adapter part is distributed from the direction close to the central rod to the direction away from the central rod, and is sequentially connected with the first guide slot, the second guide slot, the third guide slot, the fourth guide slot and the fifth guide slot, so that the counterweight block is mounted; in the dismounted state, the central rod is reversely rotated, the adapter part is distributed from the direction away from the central rod to the direction close to the central rod, and is sequentially disconnected with the first guide slot, the second guide slot, the third guide slot, the fourth guide slot and the fifth guide slot, so that the counterweight block is dismounted.

[0022] Further, the square block at the outer periphery of the end of the central rod is fixed with the square through hole arranged at the end of the guide shaft.

[0023] Further, the end of the central rod is sleeved with a cavity end plate, and the cavity is directed to the side away from the central rod; the blocking blocks are uniformly distributed along the inner wall circumferential surface of the cavity, and there is a gap between the two adjacent blocking blocks.

[0024] One end of the locking block is fixedly connected with the spring vertically upward, the spring is fixedly connected with the central 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 central rod is rotated to dismount or mount the counterweight block; in the mounted state, the external force of the spring disappears, the locking block is embedded in the hollow, and the central rod is locked.

[0025] Compared with the prior art, the beneficial effects of the present application are that the guide shaft with the annular guide groove is rotationally connected with the central rod, the adapter part matched with the annular guide groove changes the path by rotating with the central rod, moves to the direction close to or away from the central rod, and realizes the mounting or dismounting of the counterweight block.

[0026] The fifth guide slot is added, is used for hanging the different compound counterweights, realizes the possibility of mounting more counterweights, and improves the applicability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an exploded structural schematic view of the dumbbell part of the present application for conveniently dismounting and mounting the counterweight block;

[0028] Figure 2 It is a structural schematic view of the dumbbell of the present application for conveniently dismounting and mounting the counterweight block;

[0029] Figure 3 It is Figure 2 the A-A sectional view structural schematic view;

[0030] Figure 4 It is the first view angle structural schematic view of the guide shaft of the present application;

[0031] Figure 5 It is the second view angle structural schematic view of the guide shaft of the present application;

[0032] Figure 6Figure 3 is a third perspective view of the guide shaft of the present application.

[0033] Wherein, 100 - center rod, 110 - square block, 120 - end plate, 121 - blocking block, 200 - weight block, 210 - U-shaped notch, 300 - mounting seat, 310 - mounting cavity, 400 - base, 500 - guide shaft body, 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 - slope section, 532 - third arc section, 540 - fourth guide groove, 550 - fifth guide groove, 600 - adapter, 610 - guide post, 700 - counterweight, 800 - locking block, 810 - spring. DETAILED DESCRIPTION

[0034] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application, and other obvious modifications are possible.

[0035] As shown in Figure 2 and Figure 3 , a dumbbell facilitating the assembly and disassembly of weight blocks comprises a center rod 100 providing a hand holding area, two ends of the center rod 100 are connected with structureally identical mounting seats 300 having weight block mounting cavities, a base 400 for placing the overall dumbbell, and weight blocks 200 placed on the surface of the base 400. Rotating the center rod 100 can adjust the number of weight blocks 200 mounted in the mounting cavities of the mounting seats 300, thereby achieving the installation or disassembly of different weight blocks 200.

[0036] Specifically, as shown in Figure 1 , the mounting seat 300 is a long columnar shape, and a plurality of weight block mounting cavities 310 are arranged along the axial direction thereof. The mounting cavity 310 closest to the center rod 100 is regarded as the first mounting cavity, and the second, third, and Nth mounting cavities are sequentially arranged along the axial direction thereof. Rotating the center rod 100 once, the first mounting cavity is assembled and connected with the weight block 200, and rotating it again, the second mounting cavity is assembled and connected with the weight block 200 at the corresponding position. Through the rotation of the center rod 100, all mounting cavities 310 are sequentially assembled and connected with the corresponding weight blocks 200, until the center rod 100 is rotated one full circle, and all mounting cavities 310 are assembled and connected with the weight blocks 200. If it is necessary to disassemble the weight blocks 200, rotating the center rod 100 in the opposite direction can achieve the disassembly action.

[0037] The guide shaft body 500 is provided with a plurality of annular guide grooves on the outer circumferential surface, and the annular guide grooves are distributed along the axial direction. Each annular guide groove corresponds to one mounting cavity. The guide shaft body 500 is provided with an adapter 600 corresponding to the annular guide groove. The adapter 600 is used to realize the mounting of the counterweight 200 and the mounting seat 300. The adapter 600 is provided with a guide column 610. One end of the guide column 610 is matched with the corresponding annular guide groove. With the rotation of the guide shaft body 500, the guide column 610 drives the adapter 600 to change the direction of the annular guide groove, so as to realize the assembly of the counterweight 200.

[0038] In order to improve the connection firmness of the center rod 100 and the guide shaft body 500, and avoid the disconnection of the center rod 100 and the guide shaft body 500 during the rotation process, a square block 110 is additionally arranged at the end of the center rod 100. The end of the guide shaft body 500 is provided with a square through hole matched with the square block 110, so as to realize the connection and fixation of the two.

[0039] In the embodiment, as shown in Figures 4-6 The annular guide grooves are sequentially a first guide groove 510, a second guide groove 520, a third guide groove 530, a fourth guide groove 540 and a fifth guide groove 550 from the direction close to the center rod 100 to the direction away from the center rod 100. The first guide groove 510 is formed by a V-shaped section 511 and a first arc-shaped section 512. The opening of the V-shaped section 511 is directed to the end away from the center rod 100. The second guide groove 520 is formed by a U-shaped section 521 and a second arc-shaped section 522. The opening of the U-shaped section 521 is directed to the end away from the center rod 100. The opening width of the U-shaped section 521 is greater than the opening width of the V-shaped section 511, and the first guide groove 510 and the second guide groove 520 are staggered in profile, so as to avoid the coincidence of the two guide grooves, which causes the missing of the counterweight 200.

[0040] The inclined direction of the slope section 531 is consistent with the inclined direction of the vertical part of the U-shaped section 521, and the slope section 531 is located at one side of the opening of the U-shaped section 521; the fourth guide groove 540 is the same in structure as the second guide groove 520, and the opening directions are opposite, the openings of the fourth guide groove 540 and the second guide groove 520 are staggered and not corresponding, so as to avoid the problem of missing hanging; the fifth guide groove 550 is a zigzag shape formed by a plurality of V-shaped sections and a U-shaped section, and is used for hanging a compound weight 700, the weight of the compound weight 700 is less than the weight of the weight block 200, when the weight of one weight block 200 is light and the weight of two weight blocks 200 is heavy, the compound weight 700 is placed at the corresponding position of the fifth guide groove 550, so as to realize that the weight is between one weight block and two weight blocks, realize the selection of more weight, and improve the applicability of the dumbbell, and the dumbbell is more suitable for groups with more compound weight requirements.

[0041] It is explained here that the number of annular guide grooves can be adjusted according to the number of weight blocks 200 to be assembled; if the number of weight blocks 200 to be assembled is large, more annular guide grooves are added, and vice versa.

[0042] In the embodiment, as shown in Figure 1 The top of the weight block 200 is formed with a U-shaped notch 210, the U-shaped notch 210 is U-shaped, the vertical inner wall is formed with a concave arc, and the openings of the two side concave arcs are oppositely arranged to form a containing cavity for accommodating the adapter 600.

[0043] In the embodiment, the center rod 100 is further provided with an end plate 120 with a cavity at both ends, the opposite surfaces of the end plate 120 are engraved with weight adjustment marks, and the inner wall of the cavity of the end plate 120 is provided with blocking blocks 121 uniformly distributed along the circumferential surface, and there is a gap between the two adjacent blocking blocks 121; further comprising a locking block 800 matched with the gap, one end of the locking block 800 is fixedly connected with a vertical upward spring 810, the spring 810 is fixedly connected with the center rod 100, and the other end of the locking block 800 is in contact with an unlocking block (not shown in the figure) of the base 400; in the initial state, that is, when the weight block 400 is placed on the base 1, the bottom surface of the locking block 800 is in contact with the unlocking block, the unlocking block applies an upward force to the locking block 700, the locking block 800 is in a compressed state, and is away from the gap between the two blocking blocks 121, so that the center rod 100 can rotate; when the dumbbell is away from the base 400, the locking block 800 releases the elastic force downward under the action of the spring 810, the locking block 800 falls into the gap between the two blocking blocks 121, and the circumferential rotation of the center rod 100 is limited, so as to realize the locking effect of the center rod 100.

[0044] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dumbbell characterized by: The dumbbell comprises a center rod provided with a hand-holding area, two ends of the center rod are connected with mounting seats with counterweight mounting cavities which are structurally identical, a base for placing the whole dumbbell and counterweights placed on the surface of the base, the mounting seat is provided with a plurality of mounting cavities along the axial direction of the mounting seat for mounting the counterweights, and the counterweights are hung or detached from the mounting cavities through rotation of the center rod. The dumbbell further comprises a guide shaft connected with the center rod through the mounting seat, the guide shaft comprises a guide shaft body, an outer circumferential surface of the guide shaft body is provided with at least two annular guide grooves and a complex counterweight guide groove distributed along the axial direction of the guide shaft body. The annular guide groove has a wave crest, and the wave crests of the grooves of two adjacent annular guide grooves are staggered, and the adapter of the dumbbell is away from or close to the counterweight to be assembled. An adapter is sleeved on the outer periphery of the guide shaft and corresponds to the annular guide groove, the adapter is provided with a guide structure matched with the annular guide groove, and the guide structure is used for mounting the counterweight and the mounting seat.

2. The dumbbell of claim 1, wherein: The annular guide groove is five, and is distributed from the direction close to the center rod to the direction away from the center rod, and is sequentially a first guide groove, a second guide groove, a third guide groove, a fourth guide groove and a fifth guide groove. The first guide groove is formed by a V-shaped section and a first arc-shaped section, and the opening of the V-shaped section is directed to the end away from the center rod. The second guide groove is formed by a U-shaped section and a second arc-shaped section, the opening of the U-shaped section is directed to the end away from the center rod, the opening width of the U-shaped section is greater than that of the V-shaped section, and the profiles of the first guide groove and the second guide groove are staggered. The third guide groove is formed by a slope section and a third arc-shaped section, the slope direction of the slope section is consistent with the slope direction of the vertical part of the U-shaped section, and the slope section is located at one side of the opening of the U-shaped section. The fourth guide groove is structurally identical with the second guide groove, and the opening directions of the fourth guide groove and the second guide groove are opposite, and the openings of the fourth guide groove and the second guide groove are staggered. The fifth guide groove is a zigzag shape formed by a plurality of V-shaped sections and U-shaped sections, and is used for hanging the complex counterweight.

3. The dumbbell of claim 2, wherein: The guide structure comprises a guide column connected with the adapter, one end of the guide column is matched with the corresponding annular guide groove, and along with rotation of the guide shaft, the guide column drives the adapter to change the groove direction of the annular guide groove, so that the adapter is away from or close to the counterweight to be assembled, and the counterweight is mounted or detached.

4. The dumbbell of claim 3, wherein: The top of the counterweight is formed with a notch with a vertical inner wall, the vertical inner wall of the notch is formed with concave arcs, the openings of the two concave arcs are oppositely arranged, and the notch forms a containing cavity for containing the adapter.

5. A method of disassembling a dumbbell, characterized by, The dumbbell comprises the following steps: The counterweight is placed on the base. The guide shaft is connected with the center rod through the mounting seat. The annular guide groove provided with the guide structure is matched with the adapter arranged on the outer periphery of the guide shaft. The center rod is rotated to drive the guide shaft to rotate, and the guide structure drives the adapter to change the groove direction of the annular guide groove, so that the adapter is away from or close to the counterweight to be assembled, and the counterweight is mounted or detached.

6. The method of claim 5, wherein: In the mounted state, as the central rod rotates, the adapter part is sequentially connected with the first guide slot, the second guide slot, the third guide slot, the fourth guide slot and the fifth guide slot from the direction close to the central rod to the direction away from the central rod, so as to realize the installation of the counterweight block; in the dismounted state, the central rod reversely rotates, the adapter part is sequentially disconnected with the first guide slot, the second guide slot, the third guide slot, the fourth guide slot and the fifth guide slot from the direction away from the central rod to the direction close to the central rod, so as to realize the dismounting of the counterweight block.

7. The method of claim 6, wherein: The square hole in the outer periphery of the end of the central rod is fixed with the square hole in the end of the guide shaft.

8. The method of claim 5, wherein: The end of the central rod is sleeved with a cavity end plate, the cavity is towards the side away from the central rod, the blocking blocks are uniformly distributed along the inner wall of the cavity, there is a gap between two adjacent blocking blocks, one end of the locking block is fixedly connected with the spring vertically upwards, the spring is fixedly connected with the central rod, the other end of the locking block is in contact with the base, in the initial state, the spring is in the compressed state, the locking block is away from the gap, and the central rod is rotated to dismount or mount the counterweight block. In the assembled state, the external force of the spring disappears, the locking block is embedded in the gap, and the central rod is locked.

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