CN2267967Y - Automatic inflating inner tube of bicycle - Google Patents

Abstract

The utility model discloses an automatic inflating inner tube for bicycles. The automatic inflating inner tube for bicycles is characterized in that the inner part of the automatic inflating inner tube for bicycles is provided with an elastic inflating device which is composed of an elastic block and a one-way valve; an air cavity is arranged in the elastic block; the upper part of the air cavity is communicated with an air valve; side walls of the air cavity is connected with the one-way valve. The utility model has the advantages of simple structure and convenient operation and is suitable for inflating inner tubes of various vehicles.

Description

The automatic inflatable inner tube of bicycle

The utility model relates to a kind of bicycle tube, relates in particular to a kind of gas filed bicycle tube of gravity that utilizes.

Traditional bicycle tube is made up of ring-shaped rubber tire and the valve nozzle that is arranged on the tire inboard, though this common inner tube of a tyre is simple in structure, easily manufactured, but must be through inflator commonly used or air compression inflation, so use trouble, especially when no inflatable appliance, and tire can not be inflated admittedly and causes vehicle normally to use.

The purpose of this utility model provides a kind of simple in structure, can automatic gas filed bicycle tube.

Main technical schemes of the present utility model is to set up a gas filled device in the valve nozzle bottom of the common inner tube of a tyre, described gas filled device is made up of elastomer block (3) and check valve (4), one air cavity (5) is arranged in the elastomer block (3), air cavity (5) top is connected with valve nozzle (2), and the sidewall of air cavity (5) connects check valve (4).

Accompanying drawing 1 is the utility model structural representation.

1-inboard wall among the figure, the 2-valve nozzle, the 3-elastomer block, the 4-check valve, the 5-air cavity, the 6-gas storage chamber,

The elastomer block of the utility model embodiment (3) is with rubber or property plastic production, and air cavity (5) is an elliposoidal, and air cavity (5) is positioned at the middle part of elastomer block (3), and a gas storage chamber (6) can be set up in the rear portion of check valve (4), to increase work efficiency.

The utility model just enters mode of operation when cycle wheel rotates, go to the exterior wheel of elastomer block (3) when being positioned at the place, because dead weight of vehicle and human body weight make air cavity (5) compression, air enters the inner tube of a tyre from check valve (4), when the outside tire built on stilts of elastomer block (3), air cavity (5) produces negative pressure because the effect of elastomer block restores to the original state, and air sucks air cavity (5) from valve nozzle (2).When the exterior tire of elastomer block (3) during again to touchdown point, air cavity (5) is inflated in tire again by compression, so constantly goes round and begins again, and until the air pressure of the inner tube of a tyre and the air pressure balance of air cavity, gas filled device stops inflation.

The utility model is simple in structure, can effectively utilize gravity and inflate automatically, uses very conveniently, and can be widely used in various inflatable inner tubes.

Claims (2)

1, the automatic inflatable inner tube of a kind of bicycle, it is characterized by in the tyre sidewall (1) and be provided with a gas filled device, described gas filled device is made up of elastomer block (3) and check valve (4), one air cavity (5) is arranged in the elastomer block (3), air cavity (5) top is communicated with valve nozzle (2), and the sidewall of air cavity (5) connects check valve (4).

2, by the automatic inflatable inner tube of the described a kind of bicycle of claim 1, there is a gas storage chamber (6) at the rear portion that it is characterized by check valve (4).

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