Chest expanding exercise body-building device and motive power transmission device

Abstract

The invention discloses a chest expanding exercise body-building device and a motive power transmission device. The chest expanding exercise body-building device comprises a fixed support post, a first connecting rod, a second connecting rod, a moving frame, a load bearing frame, a connecting rod crank, a swinging rod and a transmission rod, wherein one end of the first connecting rod and one end of the second connecting rod are respectively hinged with the fixed support post, the other end of the first connecting rod and the other end of the second connecting rod are respectively hinged with the moving frame, the load bearing frame is arranged on the moving frame, the connecting rod crank is fixedly connected with the first connecting rod, the swinging rod can swing around a rotating shaft arranged at interval with the fixed support post, one end of the transmission rod is connected to the swinging rod through a first universal connecting mechanism, and in addition, the other end of the transmission rod is connected to the connecting rod crank through a second universal connecting mechanism, wherein when the swinging rod swings around the rotating shaft, the swinging rod drives the first connecting rod to carry out pivot shaft rotation relative to the fixed support post through the transmission rod and the connecting rod crank. During body building, exercisers can sit on the load bearing frame and can move up and down along with the load bearing frame through pulling the swinging rod, so the goal of chest expanding exercise can be reached, and the invention has the advantages of simple structure, safety, convenience, low cost and small occupied space.

Description

【Technical field】 [0001] The invention relates to a strength training fitness equipment, in particular to a chest expansion training fitness equipment and a power transmission device without additional counterweights. 【Background technique】 [0002] Along with the raising of material living standard, people pay more and more attention to health day by day, various body-building exercises develop vigorously, and various body-building equipments also arise at the historic moment. [0003] Most of the traditional butterfly-style chest expansion training fitness machines are part of multi-functional comprehensive fitness machines. Most of the multi-functional comprehensive fitness machines use fixed frames and steel rope pulley structures, and the pulley mechanism pulls counterweights of different weights to move up and down to achieve the purpose of exercise. , the structure is complicated, the floor area is large, and the price is expensive, which has formed an economic burden...

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional butterfly-style chest expansion training fitness machines are part of multi-functional comprehensive fitness machines. Most of the multi-functional comprehensive fitness machines use fixed frames and steel rope pulley structures, and the pulley mechanism pulls counterweights of different weights to move up and down to achieve the purpose of exercise. , the structure is complex, the floor area is large, the price is expensive, and it has formed an economic burden on both the manufacture and the purchase of the exerciser, and the function and maintenance are complicated, so it is difficult to popularize in the community and the family.

Traditional counterweights are all made of metal entities, which are very heavy, inconvenient to transport, and difficult to assemble, thus limiting the popularization and application of fitness equipment to a certain extent, so it is necessary to study the need for design and transformation

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