Life-saving bracelet

Abstract

A life-saving bracelet includes a ring body being able to be tightened to a user's arm, a casing connected to the ring body, an air bag folded inside the casing, an air cylinder disposed inside the casing, a control valve connected between the air bag and the air cylinder, and a protective cover pivotally disposed on the casing. When the protective cover pivotally rotates to an open position, the control button of the control valve exposes to the outside. After the control button is pressed, the control valve communicates the air bag and the air cylinder, and the air in the air cylinder immediately inflates the air bag. The air bag expands to break the casing and extends to outside. Thus, the life-saving bracelet is convenient to carry, easy to use, and not affecting the agility of the user when doing water activities.

What is claimed is: 
     
         1 . A life-saving bracelet, comprising:
 an air bag, for accommodating air therein;   an air cylinder, including compressed air therein;   a control valve, connected between the air bag and the air cylinder for controlling air supply from the gas cylinder to the air bag; wherein when the control valve is closed, the air cylinder stops supplying air to the air bag; when the control valve is opened, the air cylinder supplies air to the air bag;   a casing, for accommodating the air bag, the air cylinder, and the control valve; at least a part of the casing being able to break or open by the pressure of inflating the air bag to allow the air bag extending outside the casing; and   a ring body, connected to the casing and being wearable to the human body.   
     
     
         2 . The life-saving bracelet according to  claim 1 , wherein the ring body has a strip, a first connecting portion at one end of the strip, and a second connecting portion at another end of the strip; the first connecting portion and the second connecting portion can be connected to or detached apart from each other repeatedly; the casing is connected to the strip. 
     
     
         3 . The life-saving bracelet according to  claim 2 , wherein the first connecting portion and the second connecting portion are Velcro. 
     
     
         4 . The life-saving bracelet according to  claim 1 , wherein the ring body includes two strips, one end of each of the two strip are connected to both sides of the casing, and another end of each of the two strips are detachably connected to each other by a Velcro or a buckle. 
     
     
         5 . The life-saving bracelet according to  claim 1 , wherein an outer side of the casing is provided with a cover, the cover can break or open by the pressure of inflating the air bag. 
     
     
         6 . The life-saving bracelet according to  claim 1 , wherein a side of the casing forms a through hole communicating inside and outside of the casing; the control valve is provided with a control button extending outside of the through hole. 
     
     
         7 . The life-saving bracelet according to  claim 6  further comprising a protective cover pivotally disposed on the casing, the protective cover being able to pivotally rotate back and forth between a protective position and an open position; wherein when the protective cover is at the protective position, the protective cover covers the control button of the control valve to prevent an outer force from touching the control button; when the protective cover is at the open position, the control button is exposed to outside. 
     
     
         8 . The life-saving bracelet according to  claim 1  further comprising a global positioning system module.