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Chest expander

A tensioner and damping technology, which is applied to gymnastics equipment, muscle training equipment, sports accessories, etc., can solve the problems of inability to adjust the tension strength of the tensioner and lack of humanization, and achieve the effect of increasing the tension strength and simple transmission structure.

Active Publication Date: 2021-05-07
徐丽丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent cannot adjust the tensile strength of the tension device according to the demand, which is not humanized enough and has limitations

Method used

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  • Chest expander
  • Chest expander
  • Chest expander

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Embodiment Construction

[0037] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present invention.

[0038] It should be noted that similar reference numerals denote similar items in the following figures, therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0039]In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer" and so on is based on the orientation or positional relationship shown in the drawings, or the conventionally placed position when the product of the invention is used. Orientation or positional relationship is only for the convenience of describing the present invention and simplifyin...

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PUM

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Abstract

The invention discloses a chest expander, and belongs to the field of fitness spring exercisers, the chest expander comprises an adsorption device and a chest expander main body rotationally connected to the adsorption device, the chest expander main body comprises a shell, a fixed shaft which is in relative rotation limitation with the shell is arranged in the shell, and a first damping assembly rotating around the fixed shaft and another damping assembly are arranged on the fixed shaft. A first coil spring is arranged on the first damping assembly, the first coil spring is connected with the fixed shaft, the first damping assembly can pull the other damping assembly to rotate through a second coil spring, a gear adjusting assembly is arranged on the shell, and when the locking position of the gear adjusting assembly is changed, the relative rotation of the other damping assembly and the fixed shaft is limited. The first damping assembly is provided with a pull rope connected with a handle outside the shell. The chest expander can be adsorbed and fixed on a plane for use, the tension direction can be adjusted according to the standing position of a user, the transmission structure is simpler, and the tension strength of the chest expander can be adjusted according to the needs of the user.

Description

technical field [0001] The invention relates to the field of fitness stretchers, in particular to stretchers. Background technique [0002] Stretch machine is a kind of equipment suitable for mass fitness exercises. As people's living standards continue to improve, their desire to have a healthy body and a fit body is becoming increasingly strong. Fitness equipment tensioners have also become a new favorite for people to carry with them. From the point of view of the traditional tensioner, it is basically an exposed strip spring type tensioner. After actual experience, many design defects can be seen. That is, the tensioner is too large to carry and store; because the spring is exposed outside, when the user stretches the spring, the user is often pinched during the contraction of the spring, which is likely to cause personal injury; if the tension is greater than the spring At the limit of elasticity, the spring loses its use value and has a short service life; and the le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B21/055A63B21/04
CPCA63B21/055A63B21/0442
Inventor 蔡琴瑶
Owner 徐丽丽