CN104960648A

CN104960648A - Automatic inflation lifesaving bra

Info

Publication number: CN104960648A
Application number: CN201510380114.8A
Authority: CN
Inventors: 贾红晨
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-02
Filing date: 2015-07-02
Publication date: 2015-10-07

Abstract

The invention relates to a water lifesaving device, in particular to an automatic inflation lifesaving bra. The automatic inflation lifesaving bra comprises an annular airbag provided with two straps. The inner side, close to the chest, of the annular airbag is provided with an elastic plastic support board corresponding to the chest, the elastic plastic support board is bonded with the inner side of the airbag, a cavity is formed in the elastic plastic support board, a cut-off valve which is used for communicating the cavity with the annular airbag is arranged on the elastic plastic support board, and the cavity is filled with dichlorodifluoromethane and trichlorofluoromethane with the volume ratio being 1:0.8-1.2. The automatic inflation lifesaving bra has the characteristics of high security, quick inflation and low cost, and can be widely popularized and used by swimmers.

Description

A kind of automatic inflating lifesaving brassiere

Technical field

The present invention relates to lifesaving appliance in a kind of water, particularly a kind of automatic inflating lifesaving brassiere.

Background technology

Automatic topping-up lifesaving device in existing water, have and adopt calcium carbide and water react to produce acetylene to inflate, although react soon, acetylene is the gas that comb. is very strong, has certain danger; Have and adopt gunpowder, powder burning, also can produce a large amount of heats while releasing a large amount of gas, higher to the requirement of device, and have larger danger; There is utilize liquid oxygen or carbon dioxide to become principle that the oxygen of gaseous state or carbon dioxide volume increase to provide buoyancy, or the gas adopting the gas of high pressure to become low pressure is inflated, but these two kinds of methods are very high to the requirement of accumulator unit, generally need high strength accumulator unit, improve weight and the cost of lifesaving appliance; Also have and adopt other chemical method generated reactive gas, but reaction is comparatively slow, can not inflate fast and effectively, forms certain risk to drowning person.

Summary of the invention

Problem to be solved by this invention be to provide a kind of safety good, inflate automatic inflating lifesaving brassiere quick and with low cost.

Particular content of the present invention is as follows:

A kind of automatic inflating lifesaving brassiere, it is characterized in that, comprise the annular air-pocket with two suspender belts, the elastoplast stay bearing plate conformed to chest is provided with inside the air bag of the chest that reclines of described annular air-pocket, elastoplast stay bearing plate and inner side air bag bond, be provided with cavity in described elastoplast stay bearing plate, elastoplast stay bearing plate is provided with the shutoff valve being communicated with cavity and annular air-pocket, and described cavity is difluorodichloromethane and the fluoro trichloromethane of 1:0.8 ~ 1.2 built with volume ratio.

Preferably, the volume ratio of difluorodichloromethane and fluoro trichloromethane is 1:1.1.

Further optimization, described annular air-pocket is provided with the pressure sensor controlling shutoff valve.

Further optimization, described annular air-pocket scribbles fluorescent paint.

F-12, i.e. difluorodichloromethane, molecular formula is CF ₂cl ₂, boiling point is-29.8 DEG C, F-11, i.e. fluoro trichloromethane, molecular formula is CFCl ₃, boiling point is 23.7 DEG C, when the volume ratio of difluorodichloromethane and fluoro trichloromethane is 1:0.8 ~ 1.2, Azeotrope compositions can be formed, draw through test, under normal pressure, its azeotropic point temperature is 2 ~ 3 degrees Celsius, because when Azeotrope compositions is in azeotropic point, its component all can be seethed with excitement, in the boiling that the ratio identical with in Azeotrope compositions is a large amount of, produce a large amount of gas, and water temperature is greatly about 0 ~ 20 degree Celsius time, its azeotropic point temperature and water temperature are more or less the same, the pressure produced is also not too large, therefore, can be that difluorodichloromethane and the fluoro trichloromethane of 1:0.8 ~ 1.2 is placed in the elastoplast stay bearing plate of plastic material by volume ratio, so can alleviate the weight of this automatic inflating lifesaving brassiere, and appearance looks elegant, before its inflation, its total body density also can be less than the density of water, therefore, its floatability is on the water surface, instead of heavy water, easy to use, be convenient to find, can to prevent loss and cost is lower, in addition, pressure sensor can detect the size of hydraulic pressure, as detected, hydraulic pressure increases, shutoff valve can be controlled open, pressure in elastoplast ring reduces, and makes difluorodichloromethane and fluoro trichloromethane composite reach azeotropic point rapidly, composite fast boiling, the annular air-pocket of outside is filled up come, for drowning person provides buoyancy.

This automatic inflating lifesaving brassiere has good perfection, inflates quick and that cost is low feature, extensively can be extended to swimmer and use.

Accompanying drawing explanation

Fig. 1 is the structural representation before the inflation of this automatic inflating lifesaving brassiere;

Fig. 2 is the structural representation after the inflation of this automatic inflating lifesaving brassiere:

In figure: 1 is annular air-pocket, 2 is elastoplast stay bearing plate, and 3 is pressure sensor.

specific implementation method

Below in conjunction with embodiment and accompanying drawing, more specifically introduction is done to the present invention:

As depicted in figs. 1 and 2, it is 45cm annular air-pocket 1 that this automatic inflating lifesaving brassiere comprises a diameter, when not having gas inside this annular air-pocket 1, for flats, one knuckle place is vertex, two suspender belts are provided with at this knuckle place, an elastoplast stay bearing plate 2 is provided with in the place being adjacent to user's chest of the front side of annular air-pocket 1, this elastoplast stay bearing plate 2 is positioned at the inner side of annular air-pocket 1, and bond closely with the wall of annular air-pocket 1, the shape of the shape of this elastoplast stay bearing plate 2 and the chest of people matches, and be cavity in it, shutoff valve (not shown) is provided with between cavity and outer annular air bag 1, be the dichlorodifluoromethane of 1:1.1 and the mixed liquor of fluoro trichloromethane at cavity built with volume ratio, pressure sensor 3 is provided with in the outside of annular air-pocket 1, this pressure sensor 3 controls the folding of shutoff valve by the change of external hydraulic pressure.

The design of this elastoplast stay bearing plate 2, completely according to the profile of human body, has good traveling comfort, and has good coverage effect, adopts cavity design, can optimize the degree of utilization in space in it; When annular air-pocket 1 inflation being strutted, its position as shown in Figure 2, is just in time placed in oxter, so can support human body preferably; Because volume ratio is the difluorodichloromethane of 1:1.1 and the mixed liquor of fluoro trichloromethane, the azeotropic temperature under normal pressure is 2 ~ 3 degrees Celsius, less with the temperature difference of water temperature, the pressure needed is less, so, can be store in the cavity of the elastoplast stay bearing plate 2 of plastics in quality, and safety be stronger; When its pressure is reduced to normal pressure, can azeotropic be there is in the difluorodichloromethane in it and the mixed liquor of fluoro trichloromethane, produce a large amount of gas, until annular air-pocket 1 is full of, whole process was 4 seconds, was opened to violent boiling from shutoff valve, only needed for 1 second, can find out, its aeration speed is very fast; This automatic inflating lifesaving brassiere, lighter in weight, cost is lower, appearance looks elegant.

Claims

1. an automatic inflating lifesaving brassiere, it is characterized in that, comprise the annular air-pocket (1) with two suspender belts, the elastoplast stay bearing plate (2) conformed to chest is provided with inside the air bag of the chest that reclines of described annular air-pocket (1), elastoplast stay bearing plate (2) and inner side air bag bond, cavity is provided with in described elastoplast stay bearing plate (2), elastoplast stay bearing plate (2) is provided with the shutoff valve being communicated with cavity and annular air-pocket, and described cavity is difluorodichloromethane and the fluoro trichloromethane of 1:0.8 ~ 1.2 built with volume ratio.

2. automatic inflating lifesaving brassiere according to claim 1, is characterized in that, the volume ratio of difluorodichloromethane and fluoro trichloromethane is 1:1.1.

3. automatic inflating lifesaving brassiere according to claim 2, is characterized in that, described annular air-pocket is provided with the pressure sensor (3) controlling shutoff valve.

4. automatic inflating lifesaving brassiere according to claim 3, is characterized in that, described annular air-pocket scribbles fluorescent paint.