CN2143564Y

CN2143564Y - Valve inside

Info

Publication number: CN2143564Y
Application number: CN 93203132
Authority: CN
Inventors: 魏学雅
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-17
Filing date: 1993-02-17
Publication date: 1993-10-13
Anticipated expiration: 2003-02-17

Abstract

The utility model relates to a valve inside, which comprises a stylotrachealis and a locking nut. A one-way valve which is composed of a valve seat and a matchable valve core is arranged in the stylotrachealis, and a sealing end cap on the end of said valve seat is pressed tightly against the conical surface of the stylotrachealis by the locking nut which is screwed on the stylotrachealis. This valve inside can be used on the tyre of bicycle, hand truck, human power tricycle, etc. The utility model has the advantages of good air tightness, long service life, less frequency of inflating, low cost of time, labour and money.

Description

Valve inside

The utility model is put it briefly and is related to a kind of check valve, specifically relates to a kind of valve inside.

At present, the valve inside of bicycle, three-wheel vehicle, hand barrow, self-propelled vehicle employing mainly contains two kinds of forms: a kind of is traditional " gas intestines formula " valve inside, and another kind is automotive use " spring loaded " valve inside." gas intestines formula " valve inside is made up of valve stake, plunger, gas intestines and jam nut, this valve inside be by be enclosed within gas intestines on the plunger seal the induction opening on the plunger and be clipped in the valve stake and the plunger conical surface between the gas intestines carry out leak free, its shortcoming is that the gas intestines are too thin, easily squeezed bad, cracking, life-span is short and leak tightness is poor, need often more to take a breath intestines and tonifying Qi, time-consuming, effort, expensive; " spring loaded " valve inside good airproof performance, but complex structure, cost is higher.

The purpose of this utility model provides a kind of good seal, long valve inside of life-span.

The purpose of this utility model realizes by following manner:

A kind of valve inside comprises valve stake, jam nut, and a check valve of being made up of valve seat and associated spool is housed in the valve stake, and the jam nut that is tightened in the valve stake tightly is pressed against the seal plug of described valve seat end on the conical surface of valve stake.

Valve inside good airproof performance of the present utility model, the life-span is long, and is easy to use, often need not to be the tire tonifying Qi, saves time, laborsaving, economical.

Other advantages of the present utility model and details can be cheer and bright by reading the embodiment that hereinafter encyclopaedizes in conjunction with the accompanying drawings, wherein:

Fig. 1 is the constructional drawing of the utility model valve inside.

With reference to Fig. 1, check valve is housed in the valve stake 1 and uses the jam nut that is screwed in the valve stake 1 to be fixed.Check valve is made up of valve seat 2 and spool 3, and valve pocket 4 that 2 of valve seats are made by plastics, nylon or copper, aluminium etc. and the seal plug of being made by rubber 5 that is contained in valve pocket one end are formed.Valve pocket 4 inside faces are made the internal conical surface 6 that matches with the conical surface of spool 3.Valve pocket 4 outside faces are shaped on crossette 7, and its right-hand member outer rim is processed with screw thread 8, are used to load onto plastics or metal blocking cap, in case silt particle enters valve inside.Seal plug 5 is processed with the conical surface 9 that matches with the inner conical surface of valve stake 1, its right-hand member has one or more rectangle that communicates with mesopore or semicircle, triangle flame diversion trough 10, also can have " one " font, " ten " font or star on the left side 11 of spool 3

Shape is flame diversion trough radially, the right part of spool 3 is long thin cylindrical bar, match with the cylindrical hole on valve pocket 4 right sides and to play the guiding role, the crossette 7 of jam nut 12 by valve pocket 4 that is tightened in the valve stake 1 is fixed on check valve in the valve stake 1, the conical surface 9 of seal plug 5 tightly is pressed against on the inner conical surface of valve stake 1, forms the failure-free sealing.

Be understood that the conical surface of spool 3 and seal plug 5 also can be made into sphere.

When using valve inside of the present utility model to give inflation of tire, spool 3 is backed down in the external pressure source, the gap of pressed gas through between the valve pocket 4 and spool 3 conical surfaces flows into, then rectangle groove 10 or the radially flame diversion trough on spool 3 left sides 11 by seal plug 5 flows into valve pile center hole, enter tire at last, reach the inflation purpose.

When the tire internal gas pressure was higher than external pressure, under differential pressure action, spool 3 oppositely moved to the initial position, and the conical surface of spool 3 tightly is pressed against on the conical surface 6 of valve pocket 4, formed sealing, and the tire internal pressure is big more, and it is good more to seal.

The utility model valve inside used 3 years through test, did not occur as yet revealing, and did not need tonifying Qi.

At present, only China's bicycle owning amount just reaches more than 8,000 ten thousand, adds a considerable amount of hand barrows, manual tricycle etc., but adopt this this core of gas not only long-term use remove maintenance substantially from, and saved the time of inflating and expense, save time, laborsaving, have sizable economic and social benefit.

Claims

1, a kind of valve inside, comprise valve stake, jam nut, of the present utility model being characterised in that, a check valve of being made up of valve seat and associated spool is housed in the valve stake, and the jam nut that is tightened in the valve stake tightly is pressed against the seal plug of described valve seat end on the conical surface of valve stake.

2, according to the described valve inside of claim 1, the sealing surface that it is characterized in that described spool is taper.

3, according to claim 1 or 2 described valve insides, the sealing surface that it is characterized in that the seal plug of described valve seat end is taper.

4,, it is characterized in that described spool and seal plug make with rubber according to the described valve inside of claim 3.

5,, it is characterized in that the right-hand member of described seal plug has a flame diversion trough at least according to the described valve inside of claim 4.

6,, it is characterized in that the left side of described spool has radially flame diversion trough according to the described valve inside of claim 4.

7, according to claim 5 or 6 described valve insides, the valve pocket that it is characterized in that described valve seat is made of plastic.