A dumbbell weight adjustment device

Abstract

The invention relates to a dumbbell weight adjusting device, and belongs to the technical field of fitness products. The dumbbell weight adjusting device comprises a dumbbell and a dumbbell supportingdevice, wherein the dumbbell is provided with a dumbbell rod, the two ends of the dumbbell rod are each provided with a first dumbbell piece, a second dumbbell piece is closely attached to the outerside face of each first dumbbell piece, a third dumbbell piece is closely attached to the outer side face of each second dumbbell piece, and a fourth dumbbell piece is closely attached to the outer side face of each third dumbbell piece; a supporting frame, dumbbell piece supporting blocks and adjusting plates are arranged in the dumbbell supporting device, and positions of the dumbbell piece supporting blocks can be adjusted through effects of the adjusting plates. According to the dumbbell weight adjusting device, by pressing different control rods, the weight of the dumbbell can be increased or decreased, external tools are not needed, and using is convenient; the problem that when lifting directions of the dumbbell are different, the dumbbell rod suffers from the rotating acting forceis solved; misoperation behaviors are avoided, and the using safety is guaranteed.

Description

technical field [0001] The invention relates to a dumbbell weight adjustment device, which belongs to the technical field of fitness products. Background technique [0002] Dumbbell is an auxiliary equipment for weightlifting and fitness exercises. It has a simple structure and is easy to use, and can be used to enhance muscle strength training. [0003] Traditional dumbbells are divided into various models according to different weights, and their weights cannot be adjusted. With the increase of practice time, users must purchase multiple sets of dumbbells of different weights in order to meet the needs of increased strength, which undoubtedly increases the cost; , a dumbbell whose weight can be adjusted has appeared. Its structure is to arrange multiple dumbbell pieces at both ends of the dumbbell bar, and fix them with bolts and nuts. Users can disassemble the dumbbell pieces according to their needs. The operation is troublesome and requires tools such as wrenches , not...

AI Technical Summary

Problems solved by technology

[0003] Traditional dumbbells are divided into various models according to different weights, and their weights cannot be adjusted. With the increase of practice time, users must purchase multiple sets of dumbbells of different weights in order to meet the needs of increased strength, which undoubtedly increases the cost; , a dumbbell whose weight can be adjusted has appeared. Its structure is to arrange multiple dumbbell pieces at both ends of the dumbbell bar, and fix them with bolts and nuts. Users can disassemble the dumbbell pieces according to their needs. The operation is troublesome and requires tools such as wrenches , not easy to use

[0004] In the prior art, the patent application number 201620757677.4 discloses a weight-adjustable dumbbell, which includes a plurality of dumbbell pieces, the two ends are used to accommodate the bases of the vertically placed dumbbell pieces, and there is a grip part in the middle, which can rotate at different angles Dumbbell pieces of different weights are automatically locked at both ends, and the remaining dumbbell pieces are left on the dumbbell bar in the base; the dumbbell bar includes a mandrel with a grip in the middle, and is fixed to the weight at the end of the mandrel. The adjustment dials are set at both ends of the mandrel, which match the shape of each dumbbell plate respectively, and rotate together with the weight adjustment dial, so that the dumbbell plates of the corresponding weight are stuck on the outer edge, so that the modified dumbbell plates are locked to the multiple weights on it. Cam sheet; but in this technology, since one edge of each dumbbell sheet is provided with a deep groove, the position of the center of gravity of each dumbbell sheet is far away from the central axis of the dumbbell sheet; when operating its dumbbell , due to the different directions in which the dumbbells are lifted, it will cause the dumbbell bar to be subjected to rotational force. Arm strain; also because the positioning button of its dumbbell is located in a place that is easy to misuse, when the positioning button is misoperated, the dumbbell piece in the dumbbell bar will fall off and hurt people, which is a great safety hazard

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