CN2143280Y

CN2143280Y - Air valve of wheel

Info

Publication number: CN2143280Y
Application number: CN 92235460
Authority: CN
Inventors: 金虎仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-12
Filing date: 1992-12-12
Publication date: 1993-10-06
Anticipated expiration: 2002-12-12

Abstract

The utility model relates to an air valve of wheel, which comprises two parts, one part is a valve-inside body whose terminal is covered with a rubber pad and a valve, and the other part is a location rod which is connected into integration with the valve. The location rod is poked into the valve-inside body. The utility model has the advantages of simple structure, simple manufacture, low cost, labour saving, good air tightness and being suitable for various sorts of vehicle inner tyres.

Description

Air valve of wheel

The utility model relates to a kind of airtyred valve inside that is used for.

At present, the tire valve inside of the rickshaw that people use is as shown in Figure 2, when inflating with inflator, generally will overcome following pressure resistance, elasticity pressure pt between emulsion tube and the inner core-body, gas pressure intensity pn in the tire, in addition, when inflation, the air flue that air-flow constitutes through the passage between inner core-body and the emulsion tube, to meet obstructions, this resistance is relevant with the pressure pn in elongated degree of gas and the tire, is generally the increase tightness, all have a mind to the air flue that extends, long when air flue, and pressure pn is when big, and resistance increases, the pump built-in adds as and overcomes the required dynamic pressure pd of this resistance, so, when inflating, except will overcoming the gas pressure intensity pn in the tire with inflator, also need overcome additional pressure pt+pd, because the existence of additional pressure strengthens the detrimental effect of the clearance of pump, makes the decrease in efficiency of calming the anger of pump, this just present valve inside makes inflator inflate the very reason of effort, in addition, because the eck of emulsion tube is often broken by the valve core body, cause the tightness of tire to descend.

The purpose of this utility model is to provide a kind of makes inflation easily laborsaving, can increase tightness, valve inside simple in structure.

The utility model is to finish with following mode: valve inside includes the valve core body, covers with rubber pad and valve in the termination of valve core body, puts in the valve core body with the positioning rod that is connected of rubber pad and valve.One end of positioning rod has the radial location cone to be pressed on the rubber pad, the radial dimension of cone is less than the internal diameter size of valve core body, the other end of positioning rod has positioning boss, between positioning boss and cone, the stop bit boss is arranged on the madial wall of valve core body, and valve core body and positioning rod and valve are to be made of metallic material or abs plastics.

The utlity model has simple in structure, cost is low, is easy to make, and is very light laborsaving when inflate with inflator, the raising efficient of calming the anger greatly, and the air-tightness of this valve inside improves greatly.

Fig. 1 is the utility model structural representation

Fig. 2 is existing valve core structure schematic representation

Below in conjunction with accompanying drawing the utility model is described in further detail:

In Fig. 1, valve inside is to be made of valve core body (4), positioning rod (5), rubber pad (2), valve (1).The diameter of valve (1) and rubber pad (2) is more than or equal to the diameter of valve core body (4), cover the termination of valve core body (4) after valve (1) and rubber pad (2) are overlapping, the termination of rubber pad (2) contact valve core body (4), and valve (1) and rubber pad (2) are in tire, positioning rod (5) is linked to be an integral body with valve (1), having a valve radial location cone (3) to be pressed on the rubber pad (2) on the positioning rod (5): the radial dimension of cone (3) is less than the internal diameter size of valve core body (4), when making inflation, cone (3) moves forward, leave valve core body (4), pressurized air enters in the tire, the other end at positioning rod (5) has positioning boss (6), this positioning boss (6) is a cross bar, is convenient to gas and flows through from the gap.Between positioning boss (6) and cone (3), one circle stop bit boss (7) is arranged on the madial wall of valve core body (4), as shown in Figure 1, so just make whole positioning rod (4) and rubber pad (2), the valve (1) can only be movable in limited range, unlikely disengaging valve core body (4), positioning rod (5) and cone (3) or positioning boss (6) are convenient to install with being threaded or being connected with the elasticity hook.Equal available metal material of each parts of the present utility model or abs plastics are made.

Working principle is: as shown in Figure 1, during inflation, high-pressure air is pressed into from the valve inside left side, push valve (1) to the right, air advances in the tire, and when inflation stopped, tire inner high voltage air was pushed valve (1) and rubber pad (2) to the termination of valve core body (4), and with rubber pad (2) sealing, tire inner high voltage air can't outflow.

Inflation of the present utility model is laborsaving to illustrate it with the strong advantage of tightness by following reason:

Contrast Fig. 1, in when inflation, the pressure of establishing in the pump is PW, gas pressure intensity is Pn in the tire, when PW 〉=Pn then should be arranged, inflates and can carry out, if the inflator internal diameter is 2.5cm, Pn=3～4Kg/cm generally speaking ²Required power F=(π)/4 25(3～4 that impose on pump when then inflating)=14.72～19.63kg, under general human body weight, all can reach big like this power, when inflating, cause do not have additional pressure in the tire the pressure except that overcoming, the detrimental effect of the clearance of pump reduces, and the efficient of calming the anger improves, and therefore inflates to seem very light laborsaving.Valve inside seals two interplanar pressure, also is " sealing pressure ", if the relief opening internal diameter of valve core body is 3mm, external diameter is 3.5mm, then seals pressure P=

=3.77Pn, also promptly seal pressure and be 3.77 times of pressure in the tire, the air-tightness of valve inside and sealing pressure, the degree of finish of two sealing surfaces is directly relevant, when sealing pressure big, sealing surface highly polished, then air-tightness will greatly improve, this model utility inflation once can keep three months, and the decline of pressure pn is not more than 20% in the tire.This model utility rubber pad (4) adopts butyl rubber manufacturing, and it is good that it has an air-tightness, oil resistant, ageing-resistant, intensity is high, the life-span is long.

Among Fig. 2, (7) are emulsion tube, and (8) are exhaust port, and (9) are air flue, and (10) are core body.

Claims

1, a kind of valve inside includes valve core body (4), it is characterized in that covering with rubber pad (2) and valve (1) in the termination of valve core body (4), and the positioning rod (5) that is connected with valve (1) with rubber pad (2) puts in the valve core body (4).

2, according to the described valve inside of claim 1, an end that it is characterized in that positioning rod (5) has radial location cone (3) to be pressed on the rubber pad (2), the radial dimension of cone (3) is less than the internal diameter size of valve core body (4), the other end of positioning rod (5) has positioning boss (6), between positioning boss (6) and cone (3), stop bit boss (7) is arranged on the madial wall of valve core body (4).

3,, it is characterized in that valve core body (4) and positioning rod (5) and valve (1) are to be made of metallic material or abs plastics according to the described valve inside of claim 1.