Dumbbell assembly in dumbbell convenient to adjust weight
Technical Field
The invention relates to a dumbbell assembly in a dumbbell, which is convenient for weight adjustment and belongs to the technical field of fitness products.
Background
The auxiliary equipment for weight lifting and body building exercises has a simple structure, is convenient to use, and can be used for strengthening muscle strength training.
The traditional dumbbells are divided into various models according to different weights, the weights of the traditional dumbbells are not adjustable, and a user needs to purchase a plurality of sets of dumbbells with different weights along with the increase of exercise time so as to meet the requirement of strength increase, which undoubtedly increases the cost; afterwards, the dumbbell that weight can be adjusted has appeared, and its structure disposes polylith dumbbell piece at the both ends of dumbbell pole, fixes through bolt and nut, and the user can dismantle the dumbbell piece as required, and its troublesome poeration need be with the help of instruments such as spanner, is not convenient for use.
In the prior art, the patent with application number 201620757677.4 discloses a weight-adjustable dumbbell, which comprises a plurality of dumbbell sheets, wherein two ends of the dumbbell sheet are used for accommodating a base of the dumbbell sheet which is vertically placed, a holding part is arranged in the middle of the dumbbell sheet, the dumbbell sheets with different weights are automatically locked at two ends of the dumbbell sheet when the dumbbell sheet rotates for different angles, and the rest dumbbell sheets are kept in dumbbell rods in the base; the dumbbell rod comprises a mandrel with a holding part in the middle, weight adjusting turntables fixed at the end part of the mandrel are arranged at two ends of the mandrel, are respectively matched with the shapes of the dumbbell pieces and rotate together with the weight adjusting turntables, so that the dumbbell pieces with corresponding weights are clamped on the outer edges of the dumbbell pieces, and the dumbbell pieces are locked with a plurality of cam pieces on the dumbbell pieces; however, in the technology, because one edge of each dumbbell sheet is provided with a deeper groove, the position of the gravity center of each dumbbell sheet is far deviated from the central axis of the dumbbell sheet; when the dumbbell is operated, the dumbbell rod is subjected to rotating force due to different dumbbell lifting directions, and at the moment, the palm of an operator is also subjected to the rotating friction force of the dumbbell rod, so that the dumbbell is labor-consuming to use by the guide post, and the arm can be pulled possibly; and because the positioning button of the dumbbell is arranged at a place easy to operate by mistake, when the positioning button is operated by mistake, the dumbbell piece in the dumbbell rod falls off to injure people, and great potential safety hazard exists.
Therefore, it is more realistic to provide a dumbbell assembly in a dumbbell of the present invention that facilitates weight adjustment.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art, and to providing a dumbbell assembly in a dumbbell in which the weight can be easily adjusted.
The above object is achieved in that the following technical measures are adopted:
the dumbbell assembly comprises a dumbbell assembly body, wherein a dumbbell rod and dumbbell sheets are arranged in the dumbbell assembly, 5 dumbbell sheets are arranged at two ends of the dumbbell rod, the dumbbell rod is of a telescopic structure, and the adjacent dumbbell sheets can be clamped on the dumbbell rod by rotating the dumbbell rod.
Preferably, the dumbbell rod comprises 1 adjusting handle, 2 connecting rods and 2 moving rods, the 2 connecting rods are respectively installed at two ends of the adjusting handle, the connecting part of the connecting rods and the adjusting handle is of a rotatable structure, the 2 moving rods are symmetrically installed inside the adjusting handle, when the adjusting handle is rotated, the moving directions of the 2 moving rods are opposite, and the moving rods can slide inside the connecting rods.
Preferably, the head end of the connecting rod is provided with a balancing weight, the tail end of the connecting rod is provided with an annular clamping groove, a square sliding groove is formed in the connecting rod, a first clamping hole, a second clamping hole, a third clamping hole, a fourth clamping hole, a fifth clamping hole and a sixth clamping hole of the clamping pin are sequentially formed in the surface of the connecting rod from the tail to the head, a second trapezoidal sliding groove is formed in the outer side surface of the balancing weight, and a clamping rod sliding hole is formed in the middle of the balancing weight; the both ends of regulation handle all are equipped with the snap ring, and inside is equipped with the screw hole, just the screw thread opposite direction of two sections about the screw hole.
Preferably, the middle parts of the 2 moving rods are provided with square sliding blocks, one side of each square sliding block is provided with a clamping rod, the other side of each square sliding block is provided with a screw rod, the screw directions of the screw rods in the 2 moving rods are opposite, the square sliding blocks are also provided with clamping pin sliding holes, the clamping pin sliding holes are provided with clamping pins, first springs and gaskets, and the first springs are located between the clamping pins and the gaskets.
Preferably, the structure and the size of each dumbbell piece are the same, one surface of each dumbbell piece is provided with a trapezoidal sliding rail, the other surface of each dumbbell piece is provided with a first trapezoidal sliding groove, the trapezoidal sliding rails and the first trapezoidal sliding grooves are both located on the symmetry axis of the dumbbell piece, the edge of each dumbbell piece is further symmetrically provided with 4 positioning grooves through the trapezoidal sliding rails, and the middle of each dumbbell piece is further provided with a bar clamping hole.
The invention has the beneficial effects that: the invention overcomes the defects of the prior art, can increase or reduce the weight of the dumbbell by pulling up different controllers and rotating the adjusting handle without using external tools, and is convenient to use; the centers of gravity of the dumbbell pieces are all positioned on the central shaft of the dumbbell pieces, so that when the dumbbell is lifted in a wrong direction, the dumbbell rod is not subjected to the action force of rotation, and the possibility of arm strain is prevented; when all the controllers are released, the bayonet locks can be clamped in one bayonet lock clamping hole, at the moment, the adjusting handle cannot rotate, so that the effect of automatic locking is achieved, and when the dumbbell is lifted, the dumbbell piece and the dumbbell rod can be kept in a locking state, so that misoperation is prevented, and the use safety is ensured.
Drawings
FIG. 1 is a perspective view of the structure of a dumbbell assembly in a dumbbell of the present invention, which facilitates weight adjustment.
FIG. 2 is a cross-sectional view of a dumbbell assembly of the present invention in a dumbbell that facilitates weight adjustment.
FIG. 3 is a perspective view of the dumbbell bar structure of the dumbbell of the present invention for facilitating weight adjustment.
FIG. 4 is a cross-sectional view of a dumbbell bar in a dumbbell to facilitate weight adjustment as described herein.
FIG. 5 is a perspective view showing the internal structure of an adjustment handle of a dumbbell of the present invention, which facilitates weight adjustment.
Fig. 6 is a perspective view illustrating the structure of a connecting rod in a dumbbell in accordance with the present invention, which facilitates weight adjustment.
Fig. 7 is a perspective view showing the structure of a moving bar in a dumbbell for facilitating weight adjustment according to the present invention.
FIG. 8 is a perspective view of the dumbbell sheet structure of the present invention for facilitating weight adjustment.
Part numbers in the above figures: 10-dumbbell rod, 11-dumbbell piece, 12-connecting rod, 13-regulating handle, 14-movable rod, 15-bayonet lock, 16-gasket, 17-first spring, 1101-trapezoidal slide rail, 1102-first trapezoidal sliding groove, 1103-bayonet lock clamping hole, 1104-positioning groove, 1201-bayonet lock first clamping hole, 1202-bayonet lock second clamping hole, 1203-bayonet lock third clamping hole, 1204-bayonet lock fourth clamping hole, 1205-bayonet lock fifth clamping hole, 1206-bayonet lock sixth clamping hole, 1207-counterweight block, 1208-second trapezoidal sliding groove, 1209-square sliding groove, 1210-bayonet lock sliding hole, 1211-annular clamping groove, 1301-threaded hole, 1302-snap ring, 1401-bayonet lock, 1402-threaded rod, 1403-square sliding block, 1404-bayonet lock sliding hole.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings: it should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
As shown in fig. 1 to 8, a dumbbell assembly in a dumbbell convenient for weight adjustment includes a dumbbell assembly body, wherein a dumbbell rod and dumbbell pieces 11 are arranged in the dumbbell assembly, 5 dumbbell pieces 11 are arranged at two ends of the dumbbell rod 10, the dumbbell rod 10 is of a telescopic structure, and adjacent dumbbell pieces 11 can be clamped on the dumbbell rod 10 by rotating the dumbbell rod 10.
Preferably, the dumbbell rod 10 is composed of 1 adjusting handle 13, 2 connecting rods 12 and 2 moving rods 14, the 2 connecting rods 12 are respectively installed at two ends of the adjusting handle 13, the connecting part of the adjusting handle 13 and the connecting part is a rotatable structure, the 2 moving rods 14 are symmetrically installed inside the adjusting handle 13, when the adjusting handle 13 is rotated, the moving directions of the 2 moving rods 14 are opposite, and the moving rods 14 can slide inside the connecting rods 12.
Preferably, the head end of the connecting rod 12 is provided with a balancing weight 1207, the tail end of the connecting rod is provided with an annular clamping groove 1211, the inside of the connecting rod is provided with a square sliding groove 1209, the surface of the connecting rod 12 is sequentially provided with a first clamping hole 1201 of a clamping pin, a second clamping hole 1202 of the clamping pin, a third clamping hole 1203 of the clamping pin, a fourth clamping hole 1204 of the clamping pin, a fifth clamping hole 1205 of the clamping pin and a sixth clamping hole 1206 of the clamping pin from the tail to the head, the outer side surface of the balancing weight 1207 is provided with a second trapezoidal sliding groove 1208, and the middle part of the balancing weight is; the two ends of the adjusting handle 13 are both provided with clamping rings 1302, a threaded hole 1301 is arranged inside the adjusting handle, and the thread directions of the left section and the right section of the threaded hole 1301 are opposite.
Preferably, a square sliding block 1403 is arranged in the middle of each of the 2 moving rods 14, a clamping rod 1401 is arranged on one side of each square sliding block 14, a screw 1402 is arranged on the other side of each square sliding block 14, the screw 1402 in each of the 2 moving rods 14 is in the opposite thread direction, a clamping pin sliding hole 1404 is further arranged in each square sliding block 1403, each clamping pin sliding hole 1404 is provided with a clamping pin 15, a first spring 17 and a gasket 16, and the first spring 17 is located between the clamping pin 15 and the gasket 16.
Preferably, the dumbbell pieces 11 have the same structure and size, one surface of each dumbbell piece 11 is provided with a trapezoidal slide rail 1104, the other surface of each dumbbell piece 11 is provided with a first trapezoidal slide groove 1102, the trapezoidal slide rail 1101 and the first trapezoidal slide groove 1102 are both located on a symmetry axis of the dumbbell piece 11, the edge of each dumbbell piece 11 is further symmetrically provided with 4 positioning grooves 1104 through the trapezoidal slide rail 1101, and the middle of each dumbbell piece 11 is further provided with a bar clamping hole 1103.
When the dumbbell piece placing groove is used, firstly, a dumbbell piece 11 is placed in each dumbbell piece placing groove, the first trapezoidal sliding groove 1102 and the trapezoidal sliding rail 1101 in the adjacent dumbbell pieces 11 are connected in a matched mode, the trapezoidal sliding rail 1101 in each dumbbell piece 11 is perpendicular to the bottom surface of the base, the trapezoidal sliding rail 1101 in each dumbbell piece 11 faces the middle of the base, and at the moment, each dumbbell piece 11 is clamped on the positioning strip in the dumbbell piece supporting block through the positioning groove 1104, so that the dumbbell pieces 11 are prevented from rotating; then, the dumbbell rod 10 is installed between the dumbbell pieces 11 on the two sides through the second trapezoidal sliding groove 1208 in the dumbbell rod 10, and the dumbbell rod 10 is completely contacted with the two supporting blocks, at this time, the central axis of the dumbbell rod 10 and the central axis of the dumbbell pieces 11 are located on the same straight line.
When each end of the dumbbell rod 10 needs to be provided with one dumbbell sheet 11, only the pull handle in the first controller needs to be pulled up, at the moment, the ejector rod in the first controller slides into the first clamping hole 1201 of the clamping pin to jack up the clamping pin 15, then the adjusting handle 13 is rotated to enable the movable rod 14 to move towards the two ends of the dumbbell rod 10, the clamping pin 15 can also move to be clamped into the second clamping hole 1202 of the clamping pin, at the moment, 2 clamping rods 1401 can also be clamped in one dumbbell sheet 11 close to the dumbbell rod 10, then the pull handle in the first controller is released, then the dumbbell rod 10 is taken up, and the function that one dumbbell sheet 11 is arranged on each side of the dumbbell rod 10 can be realized; when each end of the dumbbell rod 10 needs to be provided with 2 dumbbell pieces 11, only the pull handle in the second controller 2 needs to be pulled up, at the moment, the second controller can also drive the first controller to be pulled up, the ejector rods in the first controller and the second controller respectively slide into the first clamping hole 1201 of the bayonet and the second clamping hole 1202 of the bayonet, the bayonet 15 can be jacked up, then the adjusting handle 13 is rotated, the moving rod 14 moves towards the two ends of the dumbbell rod 10, the bayonet 15 can also move and be clamped into the third clamping hole 1203 of the bayonet, at the moment, 2 bayonet rods 1401 can also be clamped in 2 dumbbell pieces 11 close to each end of the dumbbell rod 10, then the pull handle in the second controller 2 is released, then the dumbbell rod 10 is taken up, and the function that 2 dumbbell pieces 11 are arranged on the two sides of the dumbbell rod 10 can be realized; to increase the weight of the dumbbell, the controller with large number can be operated according to the above principle, and to decrease the weight of the dumbbell, the opposite is true.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the inventive concept of the present invention, and all such changes and modifications are within the scope of the present invention.