CN2136376Y - Leakproof air valve for tyre - Google Patents

Abstract

The utility model discloses a leak-proof air valve for tire, characterized in that on the upper part of an existing small rubber pipe, a sealing ring pipe made of rubber material of pressure resistance, bending resistance and high temperature and aging resistance is adopted to be sheathed on a taper cone sealing boss, which achieves the action of sealing and prevents gas in the tire from leaking outside. On the lower part of the existing small rubber pipe, the small rubber pipe is still adopted to tightly clamped on a valve inside. In order to prevent the small rubber pipe from sliding when the small rubber pipe is expanded, the core end of the valve inside is provided with a sliding stopping boss. The fabrication costs of the utility model and the existing valve inside are equivalent. After the utility model is used, the sealing performance of the leak-proof air valve for tire is enhanced by a plurality of ofdecades' times. The utility model is loaded with gas once, normal tire pressure can be generally be kept for more than one year.

Description

Leakproof air valve for tyre

The utility model relates to the valve on a kind of tire for vehicles, is a kind of tire anti-leak valve specifically.

The bicycle of selling on the present market.Pedicab, the inner tube valve on the vehicles such as light cavalry mostly adopts the small rubber hose that is sleeved on the valve inside to serve as breather cheek valve, the seal ring pipe of double as valve inside and valve cock.By the nut structure of fastening connection in addition.The valve of this structure is owing to realize inflation by expansion repeatedly, the contraction of small rubber hose.Thereby its intensity is subjected to certain restriction, and as the seal ring pipe, small rubber hose withstand voltage, ageing-resistant, and the anti-value of subduing just seems and is nowhere near.Particularly when used in higher season of temperature or area, it is particularly outstanding that this defective just seems.Small rubber hose very easily wears out into molten and breaks.When each qi of chong channel ascending adversely, along with continuous expansion, the contraction of small rubber hose, serve as that section mouth of pipe of seal action at small rubber hose, will produce a concentrated stress ring repeatedly.Aggravated breaking of small rubber hose, reduced until losing seal action.Because there are this 2 shortcomings in design in existing valve, use the tire of this valve that the phenomenon of (i.e. " gas of jogging ") generally all can take place to leak at a slow speed, can't guarantee that pressure of tire is in normal state in the long term.Thereby shortened the working life of inside and outside tire, increased user's useless power consumption.Very easily breaking of small rubber hose brought frequent replacing, inflation, promptly wasted time and energy, expensive again, brought than burden and inconvenience to the user.

The purpose of this utility model then is the problem at above-mentioned existence, has designed a kind of seal ring pipe and has been used for sealing, and small rubber hose is used for the tire anti-leak valve of unidirectional air inlet.

Technical solution of the present utility model:

Be with the tire anti-leak valve that small rubber hose constitutes on a kind of valve inside, it is characterized in that adopting the seal ring pipe box still to adopt existing small rubber hose lock ring on valve inside in cone type seal boss upper and lower part on the top of existing small rubber hose, valve inside core end is provided with slip-limiting boss.

Fig. 1 is the utility model structural representation.

Fig. 2 is Figure 1A-A direction schematic representation.

With reference to the accompanying drawings the utility model is further described:

At first seal ring pipe 6 is entered by 9 one headgears of the inlet hole on the valve inside.Be fixed on the cone type seal boss 5.The rubber material that seal ring pipe 6 should select for use and withstand voltagely, anti-subdue, high temperature resistant physical property such as aging is good is through injection moulding, cuts to be cut into suitable length and to make.The strong more sealing of its physical property is good more.In order further to improve the intensity of seal ring pipe 6, in injection-compression molding, netted pipe lining seal ring pipe 6 inwalls are bonding.Seal ring pipe 6 internal diameters can equal or be slightly larger than the external diameter of inlet hole 9 place's valve insides 1.Utilize the resiliently deformable of self to be fixed on the cone type seal boss 5.Seal ring pipe 6 thicknesss of pipe wall insert under the prerequisite of valve cock assembling satisfied being convenient to, and it is thicker to try one's best, and are beneficial to sealing.Small rubber hose 7 internal diameters that are used for unidirectional air inlet are suitably less than inlet hole 9 place's external diameters, and are on valve inside 1 that inlet hole 9 tight lids are stifled by the elastic shrinkage lock ring of self.At last valve inside 1 is injected in the tyre valve, the outside thread on fastening nut and valve cock spins, by valve inside 1 two fixedly 4 pairs of valve insides 1 of right cylinder apply an axial pressure, make valve inside 1 and the tight pressing of valve cock.Because of having adopted seal ring pipe 6 with good physical, thus can strengthen the axial pressure of valve inside 1 as far as possible, to reach higher sealability.During inflation, top distending small rubber hose 7 entered in the tire when pressurized gas flow to inlet hole 9 from air-filled pore 2, till tire pressure reaches necessary requirement.Stop inflation, small rubber hose 7 restores to the original state, the stifled tight inlet hole 9 of lid, and gas backstreaming leaks in the prevention tire.Spherical slip-limiting boss 8 prevents that small rubber hose 7 slippage when the distending air inlet from coming off, and spherical slip-limiting boss 8 one sides are cut off and form passage and be convenient to that gas is smooth and easy to be entered in the tire.Also be convenient to passing through smoothly of cone type seal boss 5 and small rubber hose 7.Block screw thread 3 spiral shell upper cap prevent that sharp dust from entering in the air-filled pore 2.

The utility model compared with prior art has following advantage:

The utility model offers a kind of novel valve of people, reaches tighter, the more long-acting sealing of valve, and this novel valve mainly contains custom-designed valve inside and cooperates with existing valve cock and be assembled into. The neostigma core is suitable with existing valve inside cost. But decades of times raising of sealing property after using, and be difficult for breaking, different seasons, the working condition of different temperature can be adapted to. Once inflation generally can keep normal tire pressure more than 1 year. Greatly improve the service life of inside and outside tire, alleviated user's burden. But also can satisfy the requirement of higher tire pressure, and can enlarge that to use loading capacity bigger, on the valve of the more violent vehicle tyre that moves, the cost of having saved tire, the utility model also has good interchangeability, and is general with existing valve inside.

Claims (3)

1, is with the tire anti-leak valve that small rubber hose constitutes on a kind of valve inside, it is characterized in that adopting the seal ring pipe box on the cone type seal boss on the top of existing small rubber hose, the bottom still adopts existing small rubber hose lock ring on valve inside, and valve inside core end is provided with slip-limiting boss.

2, tire anti-leak valve according to claim 1 is characterized in that the bonding netted pipe lining of seal ring inner tube wall.

3, tire anti-leak valve according to claim 1 and 2 is characterized in that the seal ring pipe adopts rubber material to make.

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