Barbell with weights that are easy to mount and dismount.

Abstract

A barbell with easily mounted and dismounted weights, comprising a central bar with a handle area, mounting bases attached to both ends of the central bar and identical in design, including mounting cavities for mounting the weights, a base for storing the entire barbell, and weights placed on the surface of the base, characterized in that the mounting bases comprise several mounting cavities arranged along their axis, and the weights are inserted into or removed from the mounting cavities by rotating the central bar; it further comprises guide axes, each of the guide axes being passed through one of the mounting bases and connected to the central rod, wherein at least one annular guide groove and one additional weight guide groove are arranged on the outer circumferential surface of the guide axis, wherein the guide grooves are distributed along the axial direction of the guide axis, and each of the guide grooves corresponds to a mounting cavity; Adapter elements are mounted on the outer circumference of the guide axis, corresponding to the annular guide grooves, each of the adapter elements being provided with a guide structure that fits the annular guide groove to enable the weights to be mounted on the mounting base.

Description

Technical area

[0001] The present invention relates to the technical field of sports equipment technology and in particular to a dumbbell with weights that are easy to assemble and disassemble. State of the art

[0002] The dumbbell is a piece of equipment for weightlifting and fitness exercises used to increase muscle strength. To increase the applicability of dumbbells and make them suitable for groups with different weight requirements, adjustable weight dumbbells were developed. This easy-to-disassemble dumbbell includes a center bar, locking rings, weights, and locking elements. The locking rings are attached to both ends of the center bar. Some of the weights are placed on both ends of the center bar. The innermost weights rest against the locking rings. The locking elements rest against the outermost weights and are firmly attached to both ends of the center bar. When disassembling and replacing the inner weights, all weights must be completely removed. The disassembly process is cumbersome and difficult to perform. Contents of the present invention

[0003] The object of the present invention is to provide a dumbbell with weights that are easy to assemble and disassemble so that the above technical problems can be solved.

[0004] The object is achieved by a dumbbell with easy-to-assemble and disassemble weights according to the present invention, which comprises a central bar with a handle area, mounting bases which are attached to both ends of the central bar and are identically constructed and comprise mounting cavities for mounting the weights, a base for supporting the entire dumbbell, and weights which are placed on the surface of the base, characterized in that the mounting bases comprise a plurality of mounting cavities arranged along their axis, and the weights are hung in or removed from the mounting cavities by rotating the central bar.

[0005] It further comprises guide axes, each of which passes through one of the mounting bases and is connected to the center rod. The guide axes are provided on the outer peripheral surface with at least one annular guide groove and one additional weight guide groove, the guide grooves being distributed along the axial direction of the guide axes, and each of the guide grooves corresponding to a mounting cavity.

[0006] On the outer circumference of the guide axis, adapter elements are placed that correspond to the annular guide grooves, each of the adapter elements being provided with a guide structure that matches the annular guide groove to enable the weights to be mounted on the mounting base.

[0007] According to the present invention, it is further provided that the guide structure comprises a guide column connected to the adapter element, one end of the guide column cooperating with a corresponding annular guide groove. By rotating the guide axis, the guide column moves the adapter element along the course of the annular guide groove, thereby either approaching or moving it away from the weight to be mounted, enabling the weight to be mounted or removed.

[0008] According to the present invention, it is further provided that five annular guide grooves are provided, which extend from the side near the center rod toward the side remote from the center rod. These are referred to sequentially as the first guide groove, second guide groove, third guide groove, fourth guide groove, and fifth guide groove.

[0009] The first guide groove consists of a V-shaped portion and a first arcuate portion, with the opening of the V-shaped portion facing toward the side remote from the center rod.

[0010] The second guide groove consists of a U-shaped section and a second arcuate section, with the opening of the U-shaped section facing toward the side remote from the center bar, and the opening of the U-shaped section being wider than that of the V-shaped section. The second guide groove is arranged offset from the first guide groove.

[0011] The third guide groove consists of a slant portion and a third arcuate portion, wherein the slant portion is inclined in the same orientation as the vertical parts of the U-shaped portion, and the slant portion is located on the same side as one side of the opening of the U-shaped portion.

[0012] The fourth guide groove has the same structure as the second guide groove, but its opening is oriented oppositely, with the opening of the fourth guide groove being offset from the opening of the second guide groove.

[0013] The fifth guide groove is designed in a zigzag shape and is formed by the sequential connection of several V-shaped and U-shaped sections and is used to hang an additional weight.

[0014] According to the present invention, it is further provided that the center rod is additionally provided at each end with a square block which is fitted onto its outer circumference, and the guide shaft is provided at one end with a square through-hole which mates with the square block to enable the connection of the two components.

[0015] According to the present invention, it is further provided that a recess with vertical inner walls is formed on the upper side of one of the weights, wherein each of the vertical inner walls is provided with a concave arc, wherein the concave arcs face each other on both sides and form a receiving space for receiving the adapter element.

[0016] According to the present invention, it is further provided that end plates are placed on both ends of the center rod, each of the end plates comprising a hollow chamber, the hollow chamber facing towards the side remote from the center rod, and the hollow chamber is provided on the side wall with locking blocks which are evenly distributed along its peripheral surface, with gaps being located between two adjacent locking blocks.

[0017] The end plate also includes a locking block that interacts with the gaps. A vertically upward-directed spring is firmly connected to one end of the locking block, which is fixed to the center rod. The other end of the locking block is in contact with the base. In the initial state, the spring is compressed, keeping the locking block away from the gaps, and allowing the center rod to rotate to install and remove the weight. After installation, the external force acting on the spring disappears, and the locking block is inserted into one of the gaps, locking the center rod.

[0018] Compared to the prior art, the present invention has the following advantages: The guide axes with the annular guide grooves are rotatably connected to the center rod. The adapter elements, which interact with the annular guide grooves, change their path as the center rod rotates, either approaching or moving away from the weight to be mounted, enabling the weight to be mounted or removed.

[0019] A fifth guide groove is added to accommodate different additional weights to create the possibility of mounting additional weights and increase applicability. Short description of the drawing Fig. 1 is a schematic exploded view of a portion of a dumbbell with easily assembled and disassembled weights according to the present invention; Fig. Figure 2 is a schematic representation of a dumbbell with easily assembled and disassembled weights according to the present invention; Fig. 3 is a schematic sectional view of AA in Fig. 2; Fig. 4 is a schematic representation of a guide axis of the present invention from a first angle; Fig. Figure 5 is a schematic representation of the guide axis of the present invention from a second angle; Fig. Figure 6 is a schematic representation of the guide axis of the present invention from a third angle. Detailed embodiments

[0020] The following description is intended to disclose the present invention so that a person skilled in the art can implement this invention. The preferred embodiments in the following description are merely exemplary, and a person skilled in the art may consider other obvious variations.

[0021] In the Fig. 2 and Fig. 3 shows a dumbbell with easily assembled and disassembled weights, comprising a center bar 100 with a handle area, mounting bases 300 attached to both ends of the center bar 100 and of identical construction, which include mounting cavities for mounting the weights, a base 400 for supporting the entire dumbbell, and weights 200 placed on the surface of the base 400. By rotating the center bar 100, the number of weights 200 mounted in the mounting cavities of the mounting bases 300 can be adjusted, thereby enabling the assembly or disassembly of different weights 200.

[0022] In particular, each of the mounting bases 300, as shown in Fig. 1, is elongated, columnar, and provided along its axis with a plurality of mounting cavities 310 for mounting the weights 200. The mounting cavity 310 closest to the center rod 100 is considered the first mounting cavity, followed by the second, third, and nth mounting cavities along its axis. When the center rod 100 rotates once, the first mounting cavity is connected to a weight 200. When it rotates once again, the second mounting cavity is connected to a weight 200 at the corresponding position. By rotating the center rod 100, all mounting cavities 310 are successively connected to a corresponding weight 200 until the center rod 100 has made a full rotation and all mounting cavities 310 are connected to a counterweight 200. If the counterweight 200 needs to be disassembled, this can be done by rotating the center rod 100 in the opposite direction.

[0023] The dumbbell further comprises guide axes 500, each of which extends through one of the mounting bases 300 and is connected to the center bar 100. A plurality of annular guide grooves are arranged on the outer peripheral surface of the guide axes 500, distributed along the axial direction of the guide axes. Each of the annular guide grooves corresponds to a mounting cavity. Adapter elements 600 are mounted on the outer periphery of the guide axes 500, corresponding to the annular guide grooves. The adapter elements 600 enable the weights 200 to be mounted on the mounting base 300. Each of the adapter elements 600 is provided with a guide column 610. One end of the guide column 610 interacts with a corresponding annular guide groove.By rotating the guide axis 500, the guide column 610 moves the adapter element 600 along the course of the annular guide groove, whereby it either approaches or moves away from the weight 200 to be mounted in order to enable the mounting or dismounting of the weight 200.

[0024] In order to increase the strength of the connection between the center rod 100 and the guide shafts 500 and to prevent the center rod 100 from detaching from the guide shafts 500 during the rotation process, the center rod 100 is additionally provided at each end with a square block 120 which is fitted onto its outer circumference, and the guide shaft 500 is provided at one end with a square through-hole which mates with the square block 120 to enable the connection of the two components.

[0025] In this embodiment, distribute as in Fig. 4 to 6, the annular guide grooves extend from the side near the center rod 100 toward the side far from the center rod 100. These are referred to sequentially as 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. The first guide groove 510 consists of a V-shaped portion 511 and a first arcuate portion 512, with the opening of the V-shaped portion 511 facing toward the side far from the center rod 100. The second guide groove 520 consists of a U-shaped portion 521 and a second arcuate portion 512, with the opening of the U-shaped portion 521 facing toward the side far from the center rod 100, and the opening of the U-shaped portion 521 is wider than that of the V-shaped portion 511.The second guide groove is offset from the first guide groove 510 to prevent the first guide groove 510 and the second guide groove 520 from overlapping, which could result in a weight 200 not being correctly suspended in one of the two guide grooves and thus resulting in incorrect assembly. The third guide groove 530 consists of a sloped portion 531 and a third arcuate portion 532, with the sloped portion 531 being inclined in the same direction as the vertical parts of the U-shaped portion 521, and the sloped portion 531 being located on the same side as one side of the opening of the U-shaped portion 521.The fourth guide groove 540 has the same structure as the second guide groove 520, but its opening is oriented in the opposite direction. The opening of the fourth guide groove 540 is offset from the opening of the second guide groove 520, and the two guide grooves do not coincide to prevent incorrect assembly. The fifth guide groove 550 has a zigzag shape and is formed by sequentially connecting several V-shaped and U-shaped sections. It is used to suspend an additional weight 700. The additional weight 700 is lighter than the weight 200. If one weight 200 is too light and two weights 200 are too heavy, the additional weight 700 is attached to the corresponding position of the fifth guide groove 550. This achieves a weight that is between that of one weight and that of two weights.This allows for a wider range of weight combinations and increases the applicability of the dumbbell, making it more suitable for groups of people with different weight requirements.

[0026] It should be noted that the number of annular guide grooves can be adjusted depending on the number of 200 weights required. If more 200 weights are required, the number of annular guide grooves is increased; if fewer weights are required, the number of guide grooves is reduced accordingly.

[0027] In this embodiment, at the top of one of the weights 200, as shown in Fig. 1, a recess 210 is formed, wherein the recess 210 is U-shaped, its vertical inner walls are each provided with a concave arc, wherein the concave arcs face each other on both sides and form a receiving space for receiving the adapter element 600.

[0028] In this embodiment, end plates 120 with hollow chambers are attached to both ends of the center rod 100. Scales for displaying the weight during weight adjustment are applied to the outside of the end plates 120. The hollow chamber of each of the end plates 120 is provided on the side wall with locking blocks 121 that are evenly distributed along its circumferential surface, with gaps between two adjacent locking blocks 121. The end plate also includes a locking block 800 that interacts with the gaps. A vertically upwardly directed spring 810 is firmly connected to one end of the locking block 800, which is fixed to the center rod 100. The other end of the locking block 800 is in contact with the unlocking block (not shown in the figures) of the base 400.In the initial state, i.e., when the weight 200 is placed on the base 400, the underside of the locking block 800 touches the release block, and the release block exerts an upward force on the locking block 800. This compresses the locking block 800, keeping it away from the gaps between the two locking blocks 121 and allowing the center bar 100 to rotate. When the dumbbell leaves the base 400, the locking block 800 is pressed downward under the action of the spring 810. The locking block 800 falls into one of the gaps between the two locking blocks 121, restricting the rotation of the center bar 100 around its axis and thus locking the center bar 100.

[0029] The basic principles, main features, and advantages of the present invention are illustrated and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the contents of the description are merely illustrative of the principles of this invention. While maintaining the spirit and scope of this invention, various modifications and improvements may be made, all of which fall within the scope of this invention. The scope of the present invention is defined by the appended claims and their equivalents. List of reference symbols: 100 center bar 110 Square Block 120 end plate 121 Barrier Block 200 weight 210 recess 300 mounting bases 310 mounting cavity 400 Base 500 guide axis 510 First guide groove 511 V-shaped section 512 First arched section 520 Second guide groove 521 U-shaped section 522 Second arched section 530 Third guide groove 531 Inclined section 532 Third arched section 540 Fourth guide groove 550 Fifth guide groove 600 adapter element 610 guide column 700 additional weight 800 locking block 810 spring

Claims

[1] Dumbbell with easy-to-assemble and disassemble weights, comprising a central bar with a handle area, mounting bases attached to both ends of the central bar and identically constructed and including mounting cavities for mounting the weights, a base for storing the entire dumbbell, and weights placed on the surface of the base, characterized by that the mounting bases comprise a plurality of mounting cavities arranged along their axis, and the weights are suspended in or removed from the mounting cavities by rotating the central rod; it further comprises guide axes, each of the guide axes being passed through one of the mounting bases and connected to the center rod, at least one annular guide groove and one additional weight guide groove being arranged on the outer peripheral surface of the guide axis, the guide grooves being distributed along the axial direction of the guide axis, and each of the guide grooves corresponding to a mounting cavity; adapter elements corresponding to the annular guide grooves are placed on the outer circumference of the guide axis, each of the adapter elements being provided with a guide structure matching the annular guide groove to enable the weights to be mounted on the mounting base. [2] Dumbbell with easy-to-assemble and disassemble weights according to claim 1, characterized byin that the guide structure comprises a guide column connected to the adapter element, one end of the guide column cooperating with a corresponding annular guide groove, the rotation of the guide axis causing the guide column to move the adapter element along the course of the annular guide groove, whereby it either approaches or moves away from the weight to be mounted in order to enable the mounting or dismounting of the weight. [3] Dumbbell with easy-to-assemble and disassemble weights according to claim 1 or 2, characterized by that five annular guide grooves are provided which are distributed from the side near the central rod towards the side remote from the central rod, these being referred to in turn as the first guide groove, second guide groove, third guide groove, fourth guide groove and fifth guide groove; the first guide groove consists of a V-shaped portion and a first arcuate portion, the opening of the V-shaped portion facing toward the side remote from the center rod; the second guide groove consists of a U-shaped portion and a second arcuate portion, wherein the opening of the U-shaped portion faces toward the side remote from the center rod, and the opening of the U-shaped portion is wider than that of the V-shaped portion, and the second guide groove is arranged offset from the first guide groove; the third guide groove consists of a slant portion and a third arcuate portion, wherein the slant portion is inclined in the same direction as the vertical parts of the U-shaped portion, and the slant portion is located on the same side as one side of the opening of the U-shaped portion; the fourth guide groove has the same structure as the second guide groove, but its opening is oriented oppositely, wherein the opening of the fourth guide groove is arranged offset from the opening of the second guide groove; the fifth guide groove is zigzag-shaped and is formed by the successive connection of several V-shaped and U-shaped sections and serves to suspend an additional weight. [4] Dumbbell with easy-to-assemble and disassemble weights according to claim 1, characterized by that the central rod is additionally provided at each end with a square block fitted onto its outer circumference, and the guide axle is provided at one end with a square through-hole which mates with the square block to enable the two components to be connected. [5] Dumbbell with easy-to-assemble and disassemble weights according to claim 1, characterized bythat a recess with vertical inner walls is formed on the upper side of one of the weights, each of the vertical inner walls being provided with a concave arc, the concave arcs facing each other on both sides and forming a receiving space for receiving the adapter element. [6] Dumbbell with easy-to-assemble and disassemble weights according to claim 1, characterized bythat end plates are placed on both ends of the central rod, each of the end plates comprising a hollow chamber, the hollow chamber facing towards the side remote from the central rod, and the hollow chamber is provided on the side wall with locking blocks which are evenly distributed along its peripheral surface, there being gaps between two adjacent locking blocks;the end plate also comprises a locking block that cooperates with the gaps, wherein a vertically upwardly directed spring is firmly connected to one end of the locking block, wherein the spring is fixed to the central rod, and the other end of the locking block is in contact with the base, wherein in the initial state the spring is compressed, the locking block is away from the gaps, and the central rod can rotate to disassemble and assemble the weight, and after assembly, the external force for the spring disappears, and the locking block is inserted into one of the gaps, thereby locking the central rod.;

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