Chest expander

A technology of tensioners and telescopic rods, which is applied in gymnastics equipment, muscle training equipment, sports accessories, etc., and can solve problems such as user injuries

Active Publication Date: 2018-05-08
南通吉程机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a tensioner to solve the problem that the tensioner in the prior art quickly retracts and restores after the elastic rope is stretched, which easily causes the user to be injured

Method used

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  • Chest expander
  • Chest expander
  • Chest expander

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: as figure 1 The tensioner shown includes an elastic rope 2 , an expansion member 3 and two handles 1 , the two ends of the elastic rope 2 and the expansion member 3 are respectively connected to two handles 1 , and buckles 4 are provided on both handles 1 .

[0020] like Figures 2 to 3 The telescopic member 3 shown includes a fixed rod 12, a telescopic component, a telescopic control component, a rope and an elastic protective tube 6 (it can also be other flexible protective tube 6), the protective tube 6 is socketed with the fixed rod 12, and the protective tube The two ends of 6 are respectively fixedly connected with the two handles 1. The rope includes the main rope 5 and the pull rope 10. The protective tube 6 is provided with a connecting hole for the passage of the main rope 5. One end of the main rope 5 is connected to the buckle 4, and the other end is connected to the Stay cord 10; two cavities 11 are provided in the fixed rod 12 (two cavities ...

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PUM

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Abstract

The invention discloses a chest expander which comprises two handles and an elastic rope. The two ends of the elastic rope are fixed to the two handles respectively; a fixing rod is further arranged between the two handles, and a cavity is formed in the fixed rod; through holes communicated with the cavity are formed in the two ends of the fixed rod; telescopic assemblies are connected with the interiors of the two through holes in a sliding mode. Each telescopic assembly comprises a first telescopic rod and a second telescopic rod, wherein one end of the second telescopic rod penetrates through the corresponding through hole and is located in the cavity; the end, away from the fixed rod, of the second telescopic rod is sleeved with the first telescopic rod, and a containing cavity for containing the first telescopic rod is formed in the second telescopic rod. The ends, away from the second telescopic rods, of the two first telescopic rods is connected with the two handles respectively; grooves are formed in the outer walls of the first telescopic rods and the outer walls of the second telescopic rods, and a telescopic control assembly is arranged in each groove. Each telescopic control assembly comprises a rotating shaft, a unidirectional intermittent movement mechanism, a limiting plate and a torsional spring, wherein the unidirectional intermittent movement mechanism is usedfor controlling the rotating shaft to steer. According to the chest expander in the scheme, the elastic rope can be effectively prevented from being quickly retracted and restored after being stretched.

Description

technical field [0001] The invention belongs to the field of fitness equipment, in particular to a tensioner. Background technique [0002] Stretcher is a kind of equipment suitable for mass fitness exercises; there are many types, but generally refers to spring tensioners, rubber strip tensioners, etc. The tensioner generally includes a handle and an elastic cord, and the two ends of the elastic cord are respectively fixedly connected to the handle. When the tensioner is used, the two handles are generally held with both hands, and the elastic rope is pulled apart by the strength of the arm, thereby exercising the arm muscles. After the elastic rope is stretched, due to its large elastic deformation, the speed of retraction and restoration is extremely fast, and at this time, the user consumes too much physical strength when stretching the tensioner, causing the handle of the tensioner to fall off the user's hand easily, which in turn damages the user. cause some damages....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B21/055A63B23/12
CPCA63B21/0552A63B23/03516A63B23/12
Inventor 王芳
Owner 南通吉程机械有限公司
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