CN2322813Y

CN2322813Y - Air leakage prevention air valve cap

Info

Publication number: CN2322813Y
Application number: CN 98208997
Authority: CN
Inventors: 杨立法
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-17
Filing date: 1998-04-17
Publication date: 1999-06-09
Anticipated expiration: 2008-04-17

Abstract

The utility model relates to an air leakage prevention air valve cap which is characterized in that the inner top of the air valve cap is provided with a round metal piece. An annular sealing pad is agglutinated at one side of the round metal piece, and a round rod is fixed to the center of the other side of the round metal piece. The round rod extends out of the air valve cap from the central hole of the top of the air valve cap, and the end of the round rod is wide and flat. After the utility model is used, the air preserving time of various vehicle tires can be improved by many times. Correspondingly, the service life of the tire is prolonged. The utility model is provided with the metal air valve cap which is easy to screw, and the metal air valve cap is not easy to lose and steal. Meanwhile, the utility model has a dust-proof function.

Description

The anti-gas-leak valve cap

The utility model relates to a kind of valve inside anti-gas-leak device, specifically a kind of anti-gas-leak valve cap.

Vehicle tyre is leaked slowly the air pressure in the tire is constantly reduced, thereby has accelerated Tyte Wear, has shortened the service life of tire.In the existing technology, mostly the leak-proof measure of tire is to improve existing valve inside, to improve leak preventing effect, makes its structure complicated, and practicality is relatively poor; Chinese patent 87212201 discloses the air tight tire tube valve of a kind of unpowered vehicle, it has adopted the seal cover cap of valve and band packing seal to constitute double sealing structure, it is characterized in that the tire tube valve head is a step, form by three sections circular holes in the valve spud, epimere is an aperture, the middle part is a macropore, the bottom is a taper hole, in the polyethylene seal cover cap negative thread is arranged, cooperate with the outside thread of valve spud, the seal cover cap inner top is equipped with rubber gasket, and the rubber valve of pars intermedia projection is equipped with in the bottom of valve spud, one end and valve spud bonding.Yet the packing seal in the seal cover cap because of knob song, friction, extruding breakage, reduces leakproofness when screwing; Be plastic product simultaneously because of seal cover cap, come off easily lose, stolen.

In order to overcome above-mentioned defective, the purpose of this utility model is to provide a kind of various valve for vehicle tire mouth that is applicable to, the anti-gas-leak valve cap of good leak tightness need not change former air valve structure.

The technical solution of the utility model is: establish a metal disk at the inner top of valve cap, the one side of the metal disk Gask-O-Seal that bonds; Round bar of the center fixation of another side, round bar is by stretching out outside the valve cap in the valve crown centre hole; For the ease of fixing round bar, prevent that metal disk and packing seal from coming off, the end of round bar is wide flat; Valve cap is that metal is made, and screw thread is arranged in the valve cap, closely cooperates with the outside thread of tire tube valve.

During use, fixedly valve cap is screwed in the round bar end on the anti-gas-leak valve cap, packing seal is not rotated with the rotation of valve cap, closely be pressed on the admission port of tire tube valve, because of the vertical pressurized of packing seal, not the knob song, do not wear and tear, can play secondary leakproof effect effectively.After using the utility model, make various vehicle tyre protect the gas time and can improve several times, correspondingly prolonged the service life of tire; Because of adopting the metal valve cap, be easy to screw on the other hand, difficult drop-off loses, stolen, also plays dustproof effect simultaneously.

Embodiment is described in detail below in conjunction with the utility model

Fig. 1 is the structural representation of the utility model embodiment

With reference to Fig. 1, the utility model is established a metal disk 2 at the inner top of valve cap 1, the one side of metal disk 2 Gask-O-Seal 3 that bonds; Round bar 4 of the center fixation of another side, round bar 4 is by stretching out outside the valve cap 1 in the valve crown centre hole 5; For the ease of fixing round bar 4, prevent that metal disk 2 and packing seal 3 from coming off, the end 6 of round bar 4 is wide flat; Valve cap 1 is made for metal, and the valve cap internal orifice has screw thread 8, closely cooperates with the outside thread of tire tube valve.

Claims

1, a kind of anti-gas-leak valve cap comprises packing seal (3), it is characterized in that: establish a metal disk (2) at the inner top of valve cap (1), the one side of metal disk (2) Gask-O-Seal (3) that bonds; A round bar of the center fixation of another side (4), round bar (4) is by stretching out outside the valve cap (1) in the valve crown centre hole (5).

2, anti-gas-leak valve cap as claimed in claim 1 is characterized in that: the end (6) of round bar (4) is wide flat.

3, anti-gas-leak valve cap as claimed in claim 1 or 2 is characterized in that: valve cap (1) is made for metal, and valve cap (1) internal orifice has screw thread (8).