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Safe damping chest expander

A tensioner and safety technology, applied in gymnastics equipment, muscle training equipment, sports accessories, etc., can solve problems such as danger, large spring elasticity, easy loss of control, etc., and achieve the effect of avoiding danger and using safely

Inactive Publication Date: 2015-09-02
马宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high elasticity of the spring (or rubber band), such a tensioner completely depends on people's control when using it for fitness. Once the strength is weak after pulling it out, it is very easy to lose control if it cannot be controlled. It will rebound and hit the face causing danger.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Damping safety tensioner, including: cylinder liner 1, secondary cylinder 2, piston assembly 3, spring 4, piston rod 5, hook 6, rod side end cover 7, primary cylinder 8, rodless side end cover 9;

[0029] It is characterized by:

[0030] The piston assembly 3 includes: a piston tongue 3-1, a return hole 3-2, a check valve 3-3,

[0031] There are primary oil cylinder 8, secondary oil cylinder 2 and piston assembly 3 in the oil cylinder liner 1;

[0032] The primary oil cylinder 8 and the secondary oil cylinder 2 are separated by the piston tongue 3-1, and the oil cylinder on the side where the piston tongue 3-1 is connected to the piston rod 5 is the primary oil cylinder 8,

[0033] The oil cylinder on the side where the piston tongue 3-1 is not connected to the piston rod 5 is the secondary oil cylinder 2;

[0034] One end of the piston rod 5 is connected to the piston tongue 3-1, and the other end of the piston rod 5 is connected to the hook 6;

[0035] A plurali...

Embodiment 2

[0044] 1. Damping safety tensioner, including: cylinder liner 1, secondary cylinder 2, piston assembly 3, spring 4, piston rod 5, hook 6, rod side end cover 7, primary cylinder 8, rodless side end cover 9;

[0045] It is characterized by:

[0046] The piston assembly 3 includes: a piston tongue 3-1, a return hole 3-2, a check valve 3-3,

[0047] There are primary oil cylinder 8, secondary oil cylinder 2 and piston assembly 3 in the oil cylinder liner 1;

[0048] The primary oil cylinder 8 and the secondary oil cylinder 2 are separated by the piston tongue 3-1, and the oil cylinder on the side where the piston tongue 3-1 is connected to the piston rod 5 is the primary oil cylinder 8,

[0049] The oil cylinder on the side where the piston tongue 3-1 is not connected to the piston rod 5 is the secondary oil cylinder 2;

[0050] One end of the piston rod 5 is connected to the piston tongue 3-1, and the other end of the piston rod 5 is connected to the hook 6;

[0051] A plurali...

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Abstract

The invention provides a safe damping chest expander and relates to the technical field of bodybuilding equipment. The safe damping chest expander is characterized in that a primary oil cylinder, a secondary oil cylinder and a piston assembly are arranged in an oil cylinder sleeve; the primary oil cylinder and the secondary oil cylinder are separated by a piston tongue, the oil cylinder on the side, connected with a piston rod, of the piston tongue is the primary oil cylinder, and the oil cylinder on the side, not connected with the piston rod, of the piston tongue is the secondary oil cylinder; one end of the piston rod is connected with the piston tongue, and the other end of the piston rod is connected with a hook; multiple reflux holes are formed in the piston tongue, and check valves are mounted in half of the reflux holes; the piston rod is sleeved with a spring; the outside of a rodless-side end cap is connected with a hook; one end of the piston rod is located in the primary oil cylinder, and the other end of the piston rod penetrates through a rod-side end cap and is located outside the secondary oil cylinder; oil is contained in the oil cylinder sleeve. The safe damping chest expander has a safe bodybuilding function for both the old and the young.

Description

technical field [0001] A damping safety tensioner relates to the technical field of fitness equipment. Background technique [0002] Exercising and enhancing physical health have become the common needs of people in the present society. The most commonly sold and used tensioner of the fitness equipment of the prior art still has two handles at both ends, and the middle is in the form of several springs (or high elastic rubber bands) with hooks. However, due to the high elasticity of the spring (or rubber band), such a tensioner depends entirely on people's control when using it for fitness. Once the strength is weak after pulling it out, it is very easy to lose control if it cannot be controlled. It will rebound and hit the face causing danger. . Contents of the invention [0003] In order to overcome the deficiencies in the existing technology, [0004] The purpose of this application is to design an easy-to-control, safe and reliable tensioner. [0005] To achieve th...

Claims

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Application Information

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IPC IPC(8): A63B21/055
Inventor 马宏
Owner 马宏