Gear shifting type dumbbell

Abstract

The invention discloses a gear shifting type dumbbell which comprises a handle, two telescopic rods, a plurality of pairs of external balancing weights and a pair of internal balancing weights; the two telescopic rods are interpenetrated in the handle and can stretch out or retract into the handle by rotating the handle, and a surface interval of the telescopic rods forms an abdication groove and a pushing platform; pin holes are formed on two end parts of the handle, elastic pins are arranged in the pin holes, the elastic pins can stretch out the surfaces of the end parts or retract into the end parts along with stretching or retraction of the telescopic rods, and two end surfaces of the handle form a first clamping mechanism; the outer side surfaces of the plurality of the external balancing weights form the first clamping mechanism which is the same with the first clamping mechanism of the handle, and the inner side surfaces of the plurality of the external balancing weights form a second clamping mechanism which is matched and assembled with the outer side surfaces of the other external balancing weights and the first clamping mechanism of the handle; and the internal balancing weights comprise sleeve holes and gaps for leading the end parts of the handle to penetrate and sheath, and positioning holes for leading the elastic pins to penetrate are formed on the inner walls of the sleeve holes. The structure is simpler, the regulation is more convenient, and the gear shifting type dumbbell has more regulation gear shifts, thereby increasing the regulation range.

Description

technical field [0001] The invention relates to a shifting type dumbbell. Background technique [0002] The weight of traditional dumbbells is fixed, and exercisers usually have to be equipped with a whole set of dumbbells with different weights to adapt to different stages of exercise. The equipment costs a lot and is not easy to store. [0003] Later, someone developed adjustable dumbbells, such as "Adjustment System for Dumbbells" with application number 200580042560.2, which has multiple weight positions on one dumbbell, and two telescopic rods can be extended or retracted into the handle by turning the handle. In order to selectively assemble the counterweights on the telescopic rod according to needs, the dumbbells have different weights, which is convenient for different stages of exercise, saves equipment expenses, and is convenient for storage. [0004] However, the present inventor has analyzed and compared the above-mentioned dumbbells and found that they have th...

AI Technical Summary

Problems solved by technology

[0004] However, the present inventor has analyzed and compared the above-mentioned dumbbells and found that they have the defects of complex structure, inconvenient adjustment, and few adjustment levels. Type dumbbell, the case arises from this

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