CN2123669U - Valve inside of aeration tyre - Google Patents

Abstract

The utility model relates to a valve inside of aeration tyre, comprising a valve inside rod covered with a seal gasket, a spring and a bracket, while the valve inside body is formed as an integrity, the outside of which is provided with a movable seal ring around. During inflation, the compressed air drives the seal gasket and valve inside rod to move down and then the air can be driven into the tyre, and air valve can be closed under the force of spring when finishing inflation, on the outside of the valve body, a round seal ring shaped as the swimming ring which can be moved up and down to adjust the location so as to prolong the seal time. Once inflated, the tyre can be used for half a year, thus, the valve inside of aeration tyre can provide more convenience to users. The utility model is mainly used for the inflation tyre on non-maneuverable vehicles as an ideal updated product.

Description

Valve inside of aeration tyre

The utility model relates to a kind of Tyre inflating device pneumatic tire valve inside, and various bicycle pneumatic tires such as suitable especially bicycle, hand buggy, tricycle use.

Existing bicycle tyre valve core is mainly by core body overcoat elastic emulsion pipe.Emulsion tube be suction valve be again anti-leakage valve, and emulsion tube is not wear-resisting, easily aging, also be subjected to the weather condition effect, therefore frequent generation emulsion tube breaks, gas leak phenomenon, need often inflate, and expends very big energy again and inflate, bring inconvenience to the user, also influence the working life of inside and outside tire simultaneously.

The patent No. 89201200.5 " hand cart tyre valve inside " is inflated conveniently, laborsaving, long service life though do not use emulsion tube, and it is one that its core body is gluedd joint by upper and lower core body, and for split type, sealing is strong not enough.

The purpose of this utility model is to provide a kind of pneumatic tire valve inside, except that inflate laborsaving, its sealing is good especially, can more effectively prevent to leak gas.

The utility model is achieved in that by core body and the core bar that is with sealing gasket, spring, core print seat to be formed, and core body is an integrated type, also is with mobilizable seal ring on the outer wall of core body.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Core print seat (1) is the middle ┤ shape that through hole is arranged, tightly be embedded with sealing gasket (2) in core print seat (1) upper end hole, sealing gasket (2) is made by nitrile rubber, core bar (3) lower end dashes has projection that core print seat (1) is not deviate from, this part is same as the prior art, promptly identically with automobile valve inside end portion does not describe in detail.

Seal ring (4) is made the cross section by nitrile rubber and is the ring identical with the life ring shape.

Core body (6) is an integrated type, and there is the tubular shape of through hole the centre, and big end has outside thread, and the small end outer wall section of having is conical.Spring (5) is enclosed within core bar (3) upper end to be put in the core body (6), use core bar (3) upper punch one projection of instrument again in spring (5) upper end, spring (5) just can not deviate from from core bar (3), seal ring (4) is enclosed within conical surface bottom, core body (6) lower end, sealing gasket (2) is enclosed within core bar (3) lower end again and is fixed in the core print seat (1), valve inside promptly is assembled into.

Inflate in tire by valve inside during use, air pressure overcomes the elastic force of spring (5), sealing gasket (2) is pushed open downwards, gas enters in the tire through core body (6) lower end surface, when stopping to inflate, upwards, and the core print seat (1) that drives on the core bar (3) moves upward core bar (3) together under the effect of spring (5), and sealing gasket (2) is sealed the recovery sealing state with core body (6) lower end surface again.

The utility model compared with prior art because monoblock type is stronger than split type sealing. The aspect is because of mismachining tolerance in addition, each valve inside can not cooperate very closely with valve core print seat on the inner tube of a tyre, and the sealing ring in the prior art unit with grooves in outer wall is to be close to core body can not move, and this sealing ring (4) is really movable, can move up and down, under the effect that the valve nut compresses, sealing ring (4) is along with expanding in edge on the taper seat on the core body (6), valve core print seat inner chamber is tightly shut, made the long-term air tight sealing function that plays of the inner tube of a tyre. Therefore qi of chong channel ascending adversely once generally can be used half a year, for the user brings great convenience. Sealing gasket (2), sealing ring (4) adopt nitrile rubber to make in addition, can be high temperature resistant 160 ℃ and low temperature-40 ℃, therefore be fit to very much the use of China's northern frore area and southern hot area, the scope of application is big, is a kind of desirable renewal product.

Claims (3)

1, a kind of pneumatic tire valve inside is made up of core body and the core bar (3) that is with sealing gasket (2), spring (5), core print seat (1), it is characterized in that core body (6) is integrated type, also is with mobilizable seal ring (4) on the outer wall of core body (6).

2, valve inside according to claim 1 is characterized in that core body (6) is the middle tubular shape that through hole is arranged, and big end has outside thread, and the small end outer wall section of having is conical.

3, valve inside according to claim 1 and 2 is characterized in that it is the ring identical with the life ring shape that seal ring (4) is made the cross section by nitrile rubber.

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