Cylindrical cam type counterweight adjustment device

Abstract

The invention aims to provide a cylindrical cam type counterweight adjustment device, which adopts a cylindrical cam type weight adjustment method, has a simple adjustment structure and is convenient, quick and reliable in use. Counterweight placement grooves corresponding to open grooves on counterweights are formed outside upper and lower supporting blocks, and are separated by lug bosses. Guide pillar traveling channels are formed in the upper supporting blocks. A cylindrical cam is arranged in a handle sleeve. Two guide sleeves are arranged between the cylindrical cam and the handle sleeve. Each guide sleeve is connected with a guide pillar. The lower end of each guide pillar is inserted into a contour groove of the cylindrical cam. An outer end cover is fixedly connected with the outer end of the cylindrical cam. One end of each of the upper and lower supporting blocks is connected with the outer end cover, and the other end of each of the upper and lower supporting blocks is connected with an inner end cover. One end of the cylindrical cam is fixedly connected with a screw cover. An adjustment spring is arranged in the screw cover. A positioning plate is arranged between thescrew cover and the outer end cover. A plurality of positioning holes are formed on the positioning plate. Steel balls are arranged between the adjustment spring and the positioning plate.

Description

technical field [0001] The invention relates to a cylindrical cam type counterweight adjusting device. Background technique [0002] Modern life has made people pay more and more attention to physical fitness, and the accelerated pace of life has made sports enthusiasts put forward higher requirements for equipment and use requirements. People not only achieve the purpose of exercising, but also need greater adjustability and adaptability of the equipment selected and used. [0003] At present, the simple and adjustable dumbbells sold in the market are mainly adjustable through shafts connected in series, such as various forms of combined dumbbells. This adjustment structure is very cumbersome and time-consuming. Although the adjustable dumbbells serving the high-end market have greater adjustment flexibility, their complex structures lead to high prices and are difficult to promote to the public. [0004] In a word, although there are certain room for selection regarding ...

AI Technical Summary

Problems solved by technology

[0003] At present, the simple and adjustable dumbbells sold in the market are mainly of the series-connected through-shaft adjustment type, such as various forms of combined dumbbells. This adjustment structure is very cumbersome and time-consuming.

Although adjustable dumbbells serving the high-end market have greater adjustment flexibility, their structures are complex, resulting in high prices and difficulty in promoting them to the public.

[0004] In short, although there are certain options for the types and adjustability of dumbbells in the market, there are still many imperfections in the existing products, which need to be further improved.

Images