Dumbbells with easily removable weight plates

Abstract

To provide a dumbbell with easily detachable weight plates. The mounting seat 300 has a plurality of mounting cavities 310, and the weight plate 200 is loaded into or removed from the mounting cavities by rotating the shaft 100. The mounting seat further includes a guide shaft 500 connected to the shaft through the mounting seat, and the outer circumferential surface of the guide shaft is provided with at least one annular guide groove 510, 520, 530, 540 and one additional weight guide groove 550, each guide groove corresponding to one mounting cavity. An adaptor 600 corresponding to the annular guide groove is fitted onto the outer circumferential surface of the guide shaft, and the adaptor is provided with a guide structure that fits with the annular guide groove to mount the weight plate to the mounting seat.

Description

[Technical field]

[0001] The present invention relates to the technical field of exercise equipment, and more particularly to a dumbbell with easily removable weight plates. [Background technology]

[0002] Dumbbells are aids for weightlifting and fitness exercises, used in strength training, and named for their structure similar to a bell and the fact that they do not make any noise during exercise. To improve the applicability of dumbbells and accommodate groups with different weight requirements, adjustable weight dumbbells have been introduced. The easy-to-remove dumbbell includes a shaft, a collar, weights, and a locking member, the collars are fixed to both ends of the shaft, the weights are fitted to the ends of both ends of the shaft, and one side of the weights presses against the collar, and the locking member is provided on the other side of the weights, and the locking member is firmly fixed to the end of the shaft. To remove and replace the weights inside, it is necessary to remove all the weights, which makes the removal cumbersome and difficult to operate. Summary of the Invention [Problem to be solved by the invention]

[0003] In order to solve the above technical problems, a dumbbell is provided that allows weight plates to be easily attached and detached. [Means for solving the problem]

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is as follows: A dumbbell for easily attaching and detaching weight plates, comprising: a shaft having a same structure and a mounting seat having a weight plate mounting cavity connected to both ends, providing a gripping area, a base for arranging the entire dumbbell, and a weight plate arranged on the surface of the base, The mounting seat has a plurality of mounting cavities arranged in an axial direction thereof for receiving weight plates, and the weight plates are loaded into or removed from the mounting cavities by rotating the shaft;

[0005] The guide shaft is connected to the shaft through the mounting seat, and the outer peripheral surface of the guide shaft is provided with at least one annular guide groove and one additional weight guide groove, both of which are distributed in the axial direction of the guide shaft, and each guide groove corresponds to one mounting cavity;

[0006] An adapter that corresponds to the annular guide groove is fitted onto the outer periphery of the guide shaft, and the adapter is provided with a guide structure that is assembled into the annular guide groove in order to mount the weight plate on the mounting seat.

[0007] According to the present invention, the guide structure further includes a guide post connected to the adapter, one end of the guide post being fitted into a corresponding annular guide groove, and when the guide shaft rotates, the guide post changes the adapter so as to move away from or towards the weight plate to be assembled along the direction of the groove opening of the annular guide groove, thereby enabling the attachment and detachment of the weight plate.

[0008] According to the present invention, there are five annular guide grooves, which are arranged in order from the direction away from the shaft as a first guide groove, a second guide groove, a third guide groove, a fourth guide groove, and a fifth guide groove;

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

[0010] The second guide groove is annularly formed by both the U-shaped segment and the second arcuate segment, the opening of the U-shaped segment is at the end away from the shaft, and the opening width of the U-shaped segment is greater than the opening width of the V-shaped segment and is staggered with the contour of the first guide groove;

[0011] the third guide groove is an annular guide groove formed by the inclined segment and the third arc-shaped segment, the inclination direction of the inclined segment coincides with the inclination direction of the vertical portion of the U-shaped segment, and the inclined segment is located on one side of the opening of the U-shaped segment;

[0012] The fourth guide groove has the same structure as the second guide groove, but the opening direction is opposite to that of the second guide groove, and the openings of the fourth guide groove and the openings of the second guide groove are arranged in a staggered pattern.

[0013] The fifth guide groove has a broken line shape in which multiple V-shaped segments and U-shaped segments are connected end-to-end, and is used for hanging additional weight.

[0014] According to the present invention, the end of the shaft is further provided with a square block fitted around its outer periphery, and the end of the guide shaft is provided with a square through hole which fits into the square block, thereby connecting the two in a fixed manner.

[0015] According to the present invention, furthermore, a notch having a vertical inner wall is formed at the top of the weight plate, the vertical inner wall being configured as a concave arc, and openings of the concave arc on both sides are provided opposite each other to form a receiving cavity for accommodating an adapter.

[0016] According to the present invention, the end of the shaft is covered with an end plate, the end plate has a cavity, the cavity faces away from the shaft, the inner wall of the cavity is provided with stoppers evenly distributed on its periphery, and there is a gap between two adjacent stoppers;

[0017] It further includes a lock block that fits into the gap, one end of which is fixedly connected to a vertically upward spring, the spring being fixedly connected to the shaft, and the other end of the lock block contacting the base, and in the initial state, the spring is in a compressed state and the lock block moves away from the gap, causing the shaft to rotate and the weight plate to be attached and detached, and in the assembled state, the external force from the spring is eliminated, the lock block fits into the gap, and the shaft is locked. Effect of the Invention

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: a guide shaft with an annular guide groove is rotatably connected to a shaft, and an adapter that fits into the annular guide groove changes its path in conjunction with the rotation of the shaft and moves close to the shaft, thereby attaching and detaching the weight plate.

[0019] By adding a fifth guide groove for hanging additional weights of different weights, it is possible to assemble more weights, improving applicability. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a schematic diagram showing a partial exploded view of the dumbbell of the present invention, which allows easy attachment and detachment of weight plates. [Diagram 2] FIG. 2 is a schematic diagram of the structure of a dumbbell according to the present invention, which allows easy attachment and detachment of weight plates. [Diagram 3] FIG. 3 is a schematic diagram of the structure as viewed from the arrow AA in FIG. 2. [Figure 4] FIG. 2 is a schematic diagram of the structure of a guide shaft of the present invention at a first viewing angle. [Diagram 5] FIG. 2 is a schematic view of the guide shaft of the present invention at a second viewing angle. [Figure 6] FIG. 3 is a schematic view of the guide shaft of the present invention at a third viewing angle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The following description is provided to disclose the present invention so as to enable those skilled in the art to realize the present invention, and the preferred embodiments in the following description are merely examples, and other obvious variations are possible for those skilled in the art.

[0022] 2 and 3, the dumbbell to which weight plates can be easily attached and detached includes a shaft 100 having the same structure and connected at both ends with mounting seats 300 having weight plate attachment cavities, providing a gripping area, a base 400 for placing the entire dumbbell, and weight plates 200 arranged on the surface of the base 400. By rotating the shaft 100, the number of weight plates 200 attached to the mounting cavities of the mounting seat 300 can be adjusted, and further, various weight plates 200 can be attached and detached.

[0023] 1, the mounting seat 300 is a long cylinder, and multiple mounting cavities 310 for mounting the weight plates 200 are provided in the axial direction, and the mounting cavity 310 closest to the shaft 100 is called the first mounting cavity, and the second, third, and Nth mounting cavities are arranged in sequence along the axial direction. When the shaft 100 is rotated once, the first mounting cavity assembles and connects the weight plate 200, and when the shaft 100 is rotated again, the second mounting cavity assembles and connects the weight plate 200 at the corresponding position, and by rotating the shaft 100, all the mounting cavities 310 assemble and connect the corresponding weight plates 200 in order, and when the shaft 100 is rotated once, all the mounting cavities 310 have the weight plates 200 assembled and connected. If it becomes necessary to remove the weight plate 200, removal can be accomplished by rotating the shaft 100 in the opposite direction.

[0024] The guide shaft 500 is further connected to the shaft 100 through the mounting seat 300, and a plurality of annular guide grooves are provided on the outer circumferential surface of the guide shaft 500, and the plurality of annular guide grooves are distributed in the axial direction, and each annular guide groove corresponds to one mounting cavity. An adaptor 600 corresponding to the annular guide groove is fitted on the outer circumferential surface of the guide shaft 500, and the adaptor 600 is used to mount the weight plate 200 to the mounting seat 300. A guide post 610 is provided on the adaptor 600, and one end of the guide post 610 is fitted into the corresponding annular guide groove. When the guide shaft 500 rotates, the guide post 610 changes the adaptor 600 so as to move away from or approach the weight plate 200 to be assembled along the direction of the groove opening of the annular guide groove, thereby realizing the assembly of the weight plate 200.

[0025] In order to increase the strength of the connection between the shaft 100 and the guide shaft 500 and to prevent the shaft 100 from coming off the guide shaft 500 during rotation, a square block 120 is added to the end of the shaft 100, which is fitted onto its outer periphery, and a square through hole that fits into this square block 120 is provided at the end of the guide shaft 500, thereby fixedly connecting the two.

[0026] In this embodiment, as shown in Figures 4 to 6, the annular guide groove includes 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, arranged in that order in the direction away from the shaft 100. The first guide groove 510 is formed by both a V-shaped segment 511 and a first arc-shaped segment 512, with the opening of the V-shaped segment 511 pointing to the end away from the shaft 100. The second guide groove 520 is formed by both a U-shaped segment 521 and a second arc-shaped segment 512, with the opening of the U-shaped segment 521 pointing to the end away from the shaft 100. The opening width of the U-shaped segment 521 is larger than the opening width of the V-shaped segment 511 and is staggered with the contour of the first guide groove 510. This avoids the problem of the weight plate 200 not being loaded on one of the guide grooves due to the overlap between the first guide groove 510 and the second guide groove 520, resulting in the problem of the weight plate 200 not being loaded. The third guide groove 530 is an annular guide groove formed by the inclined segment 531 and the third arc-shaped segment 532, the inclination direction of the inclined segment 531 coincides with the inclination direction of the vertical part of the U-shaped segment 521, and the inclined segment 531 is located on one side of the opening of the U-shaped segment 521, and the fourth guide groove 540 has the same structure as the second guide groove 520, but the opening direction is opposite, and the opening of the fourth guide groove 540 and the opening of the second guide groove 520 are arranged in a staggered manner and do not correspond to each other. This solves the problem of the load not being loaded. The fifth guide groove 550 is a broken line shape in which a plurality of V-shaped segments and U-shaped segments are connected end to end, and is used to load the additional weight 700. When the weight of the additional weight 700 is less than the weight of the weight plate 200, i.e., when the weight of one weight plate 200 is too light but the weight of two weight plates 200 is too heavy, the additional weight 700 is disposed at the corresponding location of the fifth guide groove 550, so that the weight of the weight is between the weight of one weight plate and the weight of two weight plates, thereby increasing the weight of the selectable weights, improving the applicability of the dumbbell, and meeting the needs of the group that requires multiple weights.

[0027] The number of annular guide grooves can be adjusted according to the number of weight plates 200 to be assembled. When there are a large number of weight plates 200 to be assembled, the number of annular guide grooves is increased, and when there are a large number of weight plates 200 to be assembled, the number of annular guide grooves is decreased.

[0028] In this embodiment, as shown in FIG. 1, a U-shaped notch 210 is formed at the top of the weight plate 200, and the U-shaped notch 210 is U-shaped, with a vertical inner wall configured as a concave arc, and with concave arc openings on both sides facing each other, forming a receiving cavity for accommodating the adapter 600.

[0029] In this embodiment, the shaft 100 is further provided with end plates 120 having cavities at both ends, and the opposite surface of the end plates 120 is engraved with adjustment pounds to facilitate the visual observation of the adjustment process. The inner wall of the cavity of the end plates 120 is provided with stoppers 121 evenly distributed on its circumferential surface, and there is a gap between two adjacent stoppers 121. The lock block 800 that fits into the gap is further included, and a vertical upward spring 810 is fixedly connected to one end of the lock block 800, and the spring 810 is fixedly connected to the shaft 100, and the other end of the lock block 800 contacts the unlocking block (not shown) of the base 400. In the initial state, that is, when the weight plate 200 is placed on the base 400, the bottom surface of the lock block 800 contacts the unlock block, and the unlock block applies an upward force to the lock block 800, so that the lock block 800 is in a compressed state and moves away from the gap between the two stoppers 121, and the shaft 100 becomes rotatable. When the dumbbell moves away from the base 400, the lock block 800 releases elasticity downward due to the action of the spring 810, and the lock block 800 falls into the gap between the two stoppers 121, limiting the axial rotation of the shaft 100 and achieving the effect of locking the shaft 100.

[0030] The above shows and describes the basic principle, 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, and the above embodiments and the description are merely the principles of the present invention, and that the present invention can be further modified and improved without departing from the spirit and scope of the present invention, and all such modifications and improvements are within the scope of the present invention as claimed. The scope of protection claimed for the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]

[0031] 100 Shaft 110 Square Block 120 End Plate 121 Stopper 200 weight plate 210 U-shaped cutout 300 Mounting seat 310 Mounting Cavity 400 base 500 Guide shaft 510 First guide groove 511 V-shaped segment 512 First circular arc segment 520 Second guide groove 521 U-shaped segment 522 Second circular arc segment 530 3rd guide groove 531 Slope Segment 532 Third circular segment 540 4th guide groove 550 5th guide groove 600 Adapter 610 Guidepost 700 extra weight 800 Rock Block 810 Spring

Claims

1. A dumbbell for easily attaching and detaching weight plates, comprising: a shaft having a gripping area, both ends of which are connected to mounting seats having the same structure and weight plate mounting cavities; a base for placing the entire dumbbell; and weight plates arranged on a surface of the base, The mounting seat has a plurality of mounting cavities arranged in an axial direction thereof for receiving weight plates, and the weight plates are loaded into or removed from the mounting cavities by rotating the shaft; The guide shaft is connected to the shaft through the mounting seat, and the outer peripheral surface of the guide shaft is provided with at least one annular guide groove and one additional weight guide groove, both of which are distributed in the axial direction of the guide shaft, and each guide groove corresponds to one mounting cavity; This dumbbell allows easy attachment and detachment of weight plates, characterized in that an adapter corresponding to the annular guide groove is fitted onto the outer periphery of the guide shaft, and the adapter is provided with a guide structure that is assembled into the annular guide groove in order to attach the weight plate to the mounting seat.

2. A dumbbell that allows easy attachment and detachment of weight plates as described in claim 1, characterized in that the guide structure includes a guide post connected to the adapter, one end of which engages with a corresponding annular guide groove, and when the guide shaft rotates, the guide post changes the adapter so that it moves away from or closer to the weight plate to be assembled along the direction of the groove opening of the annular guide groove, thereby enabling the attachment and detachment of the weight plate.

3. The annular guide grooves are five in number, and are arranged in the direction away from the shaft in the order of 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 an annular guide groove formed by both the V-shaped segment and the first arc-shaped segment, and an opening of the V-shaped segment points to an end away from the shaft; The second guide groove is annularly formed by both the U-shaped segment and the second arcuate segment, the opening of the U-shaped segment is at the end away from the shaft, and the opening width of the U-shaped segment is larger than the opening width of the V-shaped segment and is staggered with the contour of the first guide groove; the third guide groove is an annular guide groove formed by the inclined segment and the third arc-shaped segment, the inclination direction of the inclined segment coincides with the inclination direction of the vertical portion of the U-shaped segment, and the inclined segment is located on one side of the opening of the U-shaped segment; The fourth guide groove has the same structure as the second guide groove, but the opening direction is opposite to that of the second guide groove, and the openings of the fourth guide groove and the openings of the second guide groove are arranged in a staggered manner. A dumbbell with easy attachment and detachment of weight plates as described in claim 1 or 2, characterized in that the fifth guide groove has a broken line shape in which a plurality of V-shaped segments and U-shaped segments are connected end-to-end, and is used for hanging additional weights.

4. The dumbbell having easily removable weight plates as described in claim 1, characterized in that a square block is added to the end of the shaft and is fitted around its outer periphery, and a square through hole is provided at the end of the guide shaft to fit into this square block, thereby fixedly connecting the two.

5. A dumbbell with easily attachable and detachable weight plates as described in claim 1, characterized in that a notch having a vertical inner wall is formed at the top of the weight plate, the vertical inner wall being configured as a concave arc, and openings of the concave arcs on both sides are provided opposite each other to form a storage cavity for accommodating an adapter.

6. The end of the shaft is covered with an end plate, the end plate having a cavity, the cavity facing away from the shaft, the inner wall of the cavity is provided with stoppers evenly distributed around its periphery, and there is a gap between two adjacent stoppers; The lock block further includes a lock block that fits into the gap, and a vertical upward spring is fixedly connected to one end of the lock block, the spring being fixedly connected to the shaft, and the other end of the lock block contacts the base, A dumbbell with easy attachment and detachment of weight plates as described in claim 1, characterized in that in an initial state, the spring is in a compressed state, the lock block moves away from the gap, the shaft rotates to attach and detach the weight plates, and in an assembled state, the external force from the spring disappears, the lock block fits into the gap, and the shaft is locked.

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