an abdominal machine

Abstract

The invention discloses an abdominal trainer, which comprises a cushion and two swing arm telescoping mechanisms distributed on the left and right, wherein each swing arm telescoping mechanism comprises a rotating shaft bracket, an L-shaped swing arm, a rotating pipe, a swing fixed piece, a safety clamping seat, an extension spring, an elastic connecting seat, a positioning seat and a screw locking piece; the L-shaped swing arms can rotate between first and second limiting frames of the rotating shaft brackets; first rotating ball heads can be prevented by the safety clamping seats from being separated from the swing fixed pieces in a using process; each extension spring further comprises a steel rope, a second rotating ball head, an inner spring, a third rotating ball head and an outer spring; the inner springs are connected with the first rotating ball heads through the steel ropes, and the other ends are connected with the third rotating ball heads; the springs with required extension limits can be replaced according to requirements; the inner springs are sleeved with the outer springs, and the two ends of the outer springs are reduced, so that the inner springs are wrapped with the outer springs all the time in an extension process of the springs. By the design of the double springs, the extension limits of extension spring structures can be greatly increased.

Description

technical field [0001] The invention relates to a body-building equipment device, in particular to an abdominal exercise machine. Background technique [0002] In modern life, with the increasing pressure of work and life, sub-health has become the main problem of human health. How to realize exercise and fitness in limited space and time is a problem that many sports equipment manufacturers are committed to solving. Home fitness equipment, because of its small size, low cost, easy to use, multi-functional advantages, is increasingly subject to liking of consumers. [0003] The small abdominal exercise machine uses the telescopic clamping of the bracket to assist sit-ups, push-ups, abdominal exercises and other exercises, achieving the effect of assisting multiple exercises with a single device. It mainly uses the force generated by the user to overcome the stretching deformation of the spring by pressing down the swing arm in the stretching mechanism of the swing arm of t...

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that the structure tensile strength of the single spring of the tension spring structure of the abdominal exercise machine in the prior art is not enough, and the connection mode with the outside is single, and the connection stability is relatively poor

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