CN201236980Y

CN201236980Y - Tire inflation check valve

Info

Publication number: CN201236980Y
Application number: CNU2008201280527U
Authority: CN
Inventors: 刘尧华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-15
Filing date: 2008-07-15
Publication date: 2009-05-13
Anticipated expiration: 2018-07-15

Abstract

The utility model relates to a tyre charging check valve, which comprises a core body, a core cap and a gasket ring, wherein, the core cap is inserted into the top of the core body, and a core plug is arranged at the lower part of an inner cavity in the core body. A conventional gas precharge valve and a valve rubber tube key which are used when a motor vehicle is charged are omitted; a conventional rubber hose on a valve rubber tube on a non-motorized vehicle is omitted, and the resistance that is generated by the rubber hose when in charging; the sealing is reliable, and air comes in only without going out; the charging is labor-saving and rapid, and the service life is as long as a tyre; the tyre charging check valve can replace the valve rubber tubes of the prior electric vehicles, motorcycles and non-motorized vehicles.

Description

The tyre inflation safety check

Technical field

The utility model belongs to the charging valve field, relates to a kind of safety check that is used for tyre inflation.

Background technique

At present, when being inflated, inner tube of tyre for motor-vehicle is to use traditional gas charging valve and valve inside key; Being to use traditional small rubber pipe to be installed on the valve inside to bicycle inflates the inner tube of a tyre; It is poor to exist sealing, and air is easily revealed, the inflation effort, and aeration speed waits not enough slowly.

Summary of the invention

The purpose of this utility model is to provide a kind of good airproof performance, inflate laborsaving, quick, the tyre inflation safety check of long service life.

The technical solution adopted in the utility model: a kind of tyre inflation safety check, comprise core body, core cap, seal ring, the core cap inserts the core body top, and described core body inner chamber bottom is provided with the core plug.

Described core body inner chamber upper and lower is straight cavity, is positioned at the inner chamber middle and lower part and is provided with the section that closes up, and is provided with inlet hole below the section that closes up, and the bottom is provided with opening, and the core body outer wall is provided with core retaining, outside thread and groove.

Described core cap inwall is provided with the ring-type dovetail groove, matches with the outside thread of core body.

Described core plug is ball-type or cone type.

The positive beneficial effect that the utility model had:

1. the traditional gas charging valve and the valve inside key that have used when having removed the Motor Vehicle inflation from;

2. remove the traditional rubber pipe on the bicycle valve inside from, removed the resistance that rubber pipe produces when inflation;

3. rational in infrastructure, sealing is reliable, and the air only import but no export inflate laborsavingly, quick, and the working life and the inner tube of a tyre are synchronous, can replace having now electric motor car, the valve inside of motorcycle and bicycle.

Description of drawings

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

Fig. 2 is an A-A sectional view among Fig. 1;

Fig. 3 is the utility model embodiment 2 structural representations.

Embodiment

Embodiment 1

Consult Fig. 1, shown in Figure 2, a kind of tyre inflation safety check mainly comprises component such as core body 1, core plug 2, core cap 3, seal ring 4; Its core body 1 is the cavity cylindrical body, the inner chamber upper and lower is straight cavity, is positioned at the inner chamber middle and lower part and is provided with the section 103 that closes up, and is provided with the inlet hole 102 of two symmetries below the section 103 that closes up, the bottom is provided with opening 101, and core body 1 outer wall is provided with core retaining 104, outside thread 105 and groove 106; Core body 1 inner chamber bottom is provided with core plug 2, core plug 2 is the light soft material, be designed to ball-type, core plug 2 is filled in below the closing in section 103 in the core body 1 by opening 101, be provided with rubber seal 4 in the groove 106 of core body 1, core body 1 top is inserted with core cap 3, and core cap 3 inwalls are provided with ring-type dovetail groove 301, matches with the outside thread 105 of core body 1.

During use, screw off core cap 3,, compress core retaining 104, be fixed on the valve cock, make the inner conjuncted sealing of seal ring 4 and valve cock by the pressure air nut of tire with pack into the inner tube valve of tire of core body 1; When inflation, core plug 2 is moved downward to core body 1 bottom, blocks opening 101, and gas enters cavity and communicates by two inlet holes 102 on the core body 1 and enters the inner tube of a tyre; The circular arc stop portion 107 that air pressure is moved upward under the core body 1 cavity closing in section 103 core plug 2 in after the inflation seals with core body 1, makes the air only import but no export, with the top seal of core cap 3 usefulness push type close-fittings at core body 1, realizes the function of anti-gas-leak.

Embodiment 2

Consult shown in Figure 3ly, described core plug 2 also can be designed to cone type, and air pressure makes inclined-plane stop portion 108 under sections 103 sealing that matches of closing up of core plug 2 and core body 1 cavity in the inflation back; All the other structures are with embodiment 1.

Claims

1. a tyre inflation safety check comprises core body, core cap, seal ring, and the core cap inserts the core body top, it is characterized in that described core body (1) inner chamber bottom is provided with core plug (2).

2. tyre inflation safety check according to claim 1, it is characterized in that described core body (1) inner chamber upper and lower is straight cavity, be positioned at the inner chamber middle and lower part and be provided with the section (103) that closes up, be provided with inlet hole (102) below the section (103) that closes up, the bottom is provided with opening (101), and core body (1) outer wall is provided with core retaining (104), outside thread (105) and groove (106).

3. tyre inflation safety check according to claim 1 is characterized in that described core cap (3) inwall is provided with ring-type dovetail groove (301), matches with the outside thread (105) of core body (1).

4. tyre inflation safety check according to claim 1 is characterized in that described core plug (2) is ball-type or cone type.