CN2320856Y - Tyre valve inside - Google Patents

Abstract

The utility model discloses a tyre air valve which comprises an air valve seat and an air valve whose lower portion extends into the air valve seat. The utility model is characterized in that the utility model also comprises an air valve leak-proof structure which is composed of an O-shaped sealing ring with a press piece, a sealing piece which is positioned under the air valve and is provided with a sealing piece seat, a spring, etc. When the utility model is used, the utility model has favorable sealing performance. A tyre does not need to be often inflated, and the utility model has convenient operation and long service life One tyre air valve can also keep favorable sealing performance after the inner tyres of a plurality of tyres are worn out. The inflation is light and fast. The utility model can be used for tyres of bicycles, manual cars, tricycles, motorcycles, etc., and can be also used in pressure vessels.

Description

Tyre valve core

The utility model relates to a kind of tyre valve core, and it can be used for also can be used in the pressurized container on the tires such as bicycle, hand buggy, tricycle, motorcycle.

Existing tyre valve core, be to adopt the valve inside underpart to put the structure of a little rubber anti-gas-leak, because little rubber easily leaks gas, so need often to give tyre inflation when using, and To Be Protected from Heat for little rubber, and aging easily, oiling need often to change little rubber during use, particularly use in summer and torrid areas, the working life of little rubber is shorter.Therefore, use existing tyre valve core,, need to change many times little rubber, use to the user and brought trouble with broken inner tube of a tyre.

The purpose of this utility model is at above-mentioned the deficiencies in the prior art, provides a kind of leak resistance good, long service life, novel tire valve inside easy to use.

The utility model is realized by following design: it comprises valve core print seat, valve inside and valve inside leakage proof structure.Be provided with endoporus in the middle of the valve core print seat, be provided with the air inlet hole in the middle of the valve inside, the valve inside bottom is stretched in the valve core print seat endoporus, the valve inside leakage proof structure comprises and is located at valve core print seat endoporus O RunddichtringO suitable for reading, be pressed in the compressing tablet above the O RunddichtringO, the elastic sealing strip of the band sealing bar that is arranged in valve core print seat endoporus and contacts with the valve inside lower end surface, with the spring that sealing bar bottom surface contacts, the effect of spring is to guarantee that diaphragm seal closely contacts air tight with the valve inside lower end surface.

The utility model is owing to be provided with novel valve inside leakage proof structure, it has improved sealability widely, avoided often giving the trouble of tire qi of chong channel ascending adversely, used easily, and long service life, a tyre valve core, can when using the inner tube of a tyre of broken several tires, still can keep excellent sealing performance, behind use the utility model, not only gently but also fast, it also can be used in the pressurized container in inflation.

Fig. 1 is vertical sectional structure schematic representation of the present utility model.

Be further described for the utility model structure below in conjunction with accompanying drawing:

The utility model is made up of valve core print seat 11, valve inside 2 and valve inside leakage proof structure.Valve inside seat 11, valve inside 2 materials can adopt copper, steel or engineering plastics etc.Aperture, endoporus 10 top in the middle of the valve inside seat is big, and the aperture, bottom of endoporus 10 diminishes, and promptly hole wall thickens, and valve core print seat 11 outer walls can be provided with screw thread, so that with the fastening location of nut.Valve inside 2 bottoms are stretched in the valve core print seat endoporus 10, and valve inside 2 tops are provided with screw thread, so that adapted valve inside cap, the valve inside underpart attenuates, and the lower end surface is conical surface. to improve sealing effect.The valve inside leakage proof structure comprises the compressing tablet 4 that is located at valve core print seat endoporus 10 O RunddichtringO 5 suitable for reading, pushes down O RunddichtringO 5, be arranged in valve core print seat endoporus 10 and the whippy diaphragm seal 6 that contacts with valve inside 2 lower end surfaces, the sealing bar 8 of holding diaphragm seal 6, spring 9.For ease of processing, compressing tablet 4 can be as a whole with 2 one-tenth of valve insides.Sealing bar 8 can be made of a cylinder and the base plate 7 that is located in the cylinder middle part, its vertical tangent plane shape is H shape, sealing bar 8 materials can adopt copper, steel or engineering plastics etc., spring 9 the higher authorities contact with the base plate 7 of sealing bar 8, and following of spring 9 places on the hole wall that valve core print seat 11 bottoms thicken.

When being used on the tire, the inner tube of a tyre the inside of the tire of being packed in valve core print seat lower end earlier can be adopted and be twisted a lower nut fasten the position on the valve core print seat at tire wall place, also can adopt bonding way to be fixed on the tire; The spring upper end portion stretched in the cylinder of sealing bar bottom contact, diaphragm seal is put into sealed the bar top cylinder and contact with the top of base plate with the bottom surface of base plate; Then the above-mentioned assembly parts that is formed by combining by spring, sealing bar and diaphragm seal is packed in the endoporus on valve core print seat top, when valve inside during with the flexible connection of valve core print seat, at the elasticity O RunddichtringO of putting suitable for reading of valve core print seat endoporus; Again the valve inside bottom is stretched in the endoporus of valve core print seat top; Use screw cap 3 that valve inside and valve core print seat is fastening at last, the hole wall that valve core print seat bottom is thickened withstands spring, valve inside lower end conical surface is closely contacted with diaphragm seal, and make compressing tablet compress elasticity O RunddichtringO, guarantee the utlity model has excellent sealing performance (referring to accompanying drawing 1).When valve inside was fixedlyed connected with the valve core print seat, O RunddichtringO material adopts rigid material, and was identical with the valve inside material, and made one with valve inside, and with O-ring seals be pressed into valve core print seat endoporus suitable for reading in, the O RunddichtringO rises and connects and the sealing double action.

When needing inflation, the mouth of supplying gas of pump is aimed at the suitable for reading of valve inside intermediate air inlet hole 1, the air that comes out from pump enters in the valve core print seat by the air inlet hole 1 in the middle of the valve inside, the pressure effect of air, diaphragm seal is pushed away downwards, again by the downward pressure spring of sealing bar, between diaphragm seal and the valve inside lower end gap just appears like this, air comes out the back by above-mentioned gap from the air inlet hole of valve inside lower end, gap between sealing bar outer wall and valve core print seat inwall, enter the endoporus of valve core print seat bottom, enter into the inner tube of a tyre of tire at last from the air ports 12 that is arranged in valve core print seat endoporus 10 bottoms, behind the tire sufficient gas, stop inflation, because the reset response of spring will seal bar and diaphragm seal and upwards push up, up to diaphragm seal with till the valve inside lower end surface closely contacts.

Claims (3)

1, a kind of tyre valve core, in the middle of comprising, it is provided with the valve core print seat (11) of endoporus (10) and the valve inside (2) that the centre is provided with air inlet hole (1), valve inside (2) bottom is stretched in the endoporus (10) of valve core print seat, it is characterized in that at the endoporus (10) of the valve core print seat O RunddichtringO (5) that is provided with band compressing tablet (4) suitable for reading, be provided with the diaphragm seal (6) of band sealing bar (8) in valve inside (2) lower end surface, be provided with spring (9) in sealing bar (8) bottom surface.

2, by the described tyre valve core of claim 1, it is characterized in that described valve inside (2) underpart attenuates, the lower end surface is conical surface.

3, by claim 1 or 2 described tyre valve cores, it is characterized in that described sealing bar (8) is made of a cylinder and the base plate (7) that is located in the cylinder middle part, its vertical tangent plane shape is H shape.

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