CN201236981Y

CN201236981Y - Tire inflation check valve

Info

Publication number: CN201236981Y
Application number: CNU2008201320346U
Authority: CN
Inventors: 刘尧华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-01
Filing date: 2008-08-01
Publication date: 2009-05-13
Anticipated expiration: 2018-08-01

Abstract

The utility model relates to a tyre charging check valve, which comprises a core tube, a plunger piston, a cap and a gasket ring. The core tube is provided with an upper cavity and a lower cavity which are straight tube-shaped cavity bodies; a narrow larynx channel is arranged between the upper cavity and the lower cavity; an inlet of the narrow larynx channel is communicated with the upper cavity, and an outlet of the narrow larynx channel is communicated with the lower cavity; the inlet of the narrow larynx channel takes the shape of a tapered trumpet, and the outlet of the narrow larynx channel takes the shape of a broadened trumpet; an opening is arranged at the bottom of the lower cavity; a stop dog is arranged on the edge of the opening; a vertical air inlet groove is opened on an inner wall of the lower cavity; the plunger piston is arranged in the lower cavity of the core tube; the top of the plunger piston takes the shape of a taper which fits into the trumpet-shaped outlet of the narrow larynx channel; and the cap buckles and jackets the upper part of an outer wall of the core tube. The tyre charging check valve has reliable sealing and can replace valve rubber tubes of the prior electric vehicles, motorcycles and non-motorized vehicles; air comes in only without going out; and the charging is labor-saving and rapid, and the service life is long.

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, inner tube of tyre for motor-vehicle uses traditional gas charging valve and valve inside key to inflate; Bicycle uses the small rubber pipe that is installed on the valve inside that the inner tube of a tyre is inflated; Existing gas charging valve and valve inside exist that sealing is poor, gas is easily revealed, inflate effort, aeration speed waits deficiency slowly.

The model utility content

For addressing the above problem, 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.

For achieving the above object, the utility model is by the following technical solutions:

The utility model is a kind of tyre inflation safety check, comprises core tube, plunger, cap, seal ring; The core tube has epicoele and cavity of resorption, epicoele and cavity of resorption all are straight tube shape cavitys, be provided with narrow larynx passage between epicoele and the cavity of resorption, the inlet of narrow larynx passage is communicated with epicoele, the outlet of narrow larynx passage is communicated with cavity of resorption, the inlet of narrow larynx passage is the tubaeform of convergent, the outlet of narrow larynx passage is the tubaeform of flaring, the bottom of cavity of resorption is provided with opening, on the edge of opening block is set, and the inwall of cavity of resorption has vertical air inlet duct, plunger is contained in the cavity of resorption of core tube, the top of plunger is taper, and with corresponding the coincideing of flaring exit of narrow larynx passage, the cap retaining ring is on the top of core drum outer wall.

The top of core drum outer wall is provided with the protruding tooth of spirality, and the cap inwall is provided with the ring-type teeth groove, and cap passes through this ring-type teeth groove retaining ring on the protruding tooth of spirality, with the open top sealing of core tube.

The bottom of core drum outer wall is provided with annular groove, is embedded with rubber seal in this annular groove.

The middle part of core drum outer wall is provided with the annular boss that plays the role of positioning.

Air inlet duct has four, and the cross section of each air inlet duct is semicircle, and these four air inlet ducts are along the circumferential direction uniform, and described block has four, and these four blocks are spaced apart and arranged between four air inlet ducts.

The utility model has following positive beneficial effect:

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

Two. removed the traditional rubber pipe on the bicycle valve inside from, the resistance that rubber pipe produces when having eliminated inflation;

Three. rational in infrastructure, sealing is reliable, and the air only import but no export inflate laborsavingly, quick, and long service life can replace having now electric motor car, the valve inside of motorcycle and bicycle.

Description of drawings

Fig. 1 is the utility model one embodiment's a structural representation;

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the worm's eye view of Fig. 1.

Embodiment

Please refer to Fig. 1, Fig. 2, Fig. 3, the utility model is a kind of tyre inflation safety check, comprises core tube 1, plunger 2, cap 3, seal ring 4; Core tube 1 has epicoele 5 and cavity of resorption 6, epicoele 5 and cavity of resorption 6 all are straight tube shape cavitys, be provided with narrow larynx passage 7 between epicoele 5 and the cavity of resorption 6, the inlet 15 of narrow larynx passage 7 is communicated with epicoele 5, the outlet 16 of narrow larynx passage 7 is communicated with cavity of resorption 6, the inlet 15 of narrow larynx passage 7 is the tubaeform of convergent, the outlet 16 of narrow larynx passage 7 is the tubaeform of flaring, the bottom of cavity of resorption 6 is provided with opening 8, block 9 is set on the edge of opening 8, and the inwall of cavity of resorption 6 has vertical air inlet duct 10, and plunger 2 is contained in the cavity of resorption 6 of core tube 1, the top of plunger 2 is taper, with flaring exit 16 corresponding the coincideing of narrow larynx passage 7.

The top of core tube 1 outer wall is provided with the protruding tooth 11 of spirality, and cap 3 inwalls are provided with ring-type teeth groove 12, and cap 3 passes through these ring-type teeth groove 12 retaining rings on the protruding tooth 11 of spirality, with the open top sealing of core tube 1.

The bottom of core tube 1 outer wall is provided with annular groove 13, is embedded with rubber seal 4 in this annular groove 13.

Be provided with the annular boss 14 that plays the role of positioning at the middle part of core tube 1 outer wall.

Air inlet duct 10 has four, and the cross section of each air inlet duct 10 is semicircle, and these four air inlet ducts 10 are along the circumferential direction uniform, and block 9 has four, and these four blocks 9 are spaced apart and arranged between four air inlet ducts 10.

During use, screw off cap 3,, annular boss 14 is fixed on the valve cock, make the inner conjuncted sealing of seal ring 4 and valve cock with the pressure air nut of tire with pack into the inner tube valve of tire of core tube 1; During inflation, plunger 2 is moved downward to core tube 1 bottom, is undertaken spacingly by 9 pairs of plungers of core tube 1 bottom block 2, makes its cavity of resorption that can not break away from core tube 16, and gas enters in the cavity of resorption 6 by four air inlet ducts 10 on cavity of resorption 6 inwalls, enters the inner tube of a tyre through cavity of resorption 6; Air pressure makes plunger 2 be moved upward to flaring exit 16 places of the narrow larynx passage 7 of core tube 1 in the inflation back, utilize the conical surface that narrow larynx passage 7 is closed, make the air only import but no export, cap 3 usefulness are pushed the top of the tight retaining ring of mode at core tube 1, open top sealing with core tube 1 prevents gas leakage.This product hermeticity is good, inflate laborsaving, quick, long service life.

Claims

1. a tyre inflation safety check comprises core tube (1), plunger (2), cap (3), seal ring (4); It is characterized in that: core tube (1) has epicoele (5) and cavity of resorption (6), epicoele (5) and cavity of resorption (6) all are straight tube shape cavitys, be provided with narrow larynx passage (7) between epicoele (5) and the cavity of resorption (6), the inlet (15) of narrow larynx passage (7) is communicated with epicoele (5), the outlet (16) of narrow larynx passage (7) is communicated with cavity of resorption (6), the inlet (15) of narrow larynx passage (7) is the tubaeform of convergent, the outlet (16) of narrow larynx passage (7) is the tubaeform of flaring, the bottom of cavity of resorption (6) is provided with opening (8), block (9) is set on the edge of opening (8), the inwall of cavity of resorption (6) has vertical air inlet duct (10), described plunger (2) is contained in the cavity of resorption of core tube (1), the top of plunger (2) is taper, and with corresponding the coincideing of flaring exit (16) of narrow larynx passage (7), cap (3) retaining ring is on the top of core tube (1) outer wall.

2. tyre inflation safety check as claimed in claim 1, it is characterized in that: the top of described core tube (1) outer wall is provided with the protruding tooth of spirality (11), the inwall of cap (3) is provided with ring-type teeth groove (12), cap (3) passes through this ring-type teeth groove (12) retaining ring on the protruding tooth of spirality (11), with the open top sealing of core tube (1).

3. tyre inflation safety check as claimed in claim 1 is characterized in that: the bottom of described core tube (1) outer wall is provided with annular groove (13), is embedded with rubber seal (4) in this annular groove (13).

4. tyre inflation safety check as claimed in claim 1 is characterized in that: the middle part of described core tube (1) outer wall is provided with annular boss (14).

5. tyre inflation safety check as claimed in claim 1, it is characterized in that: described air inlet duct (10) has four, the cross section of each air inlet duct (10) is semicircle, these four air inlet ducts (10) are along the circumferential direction uniform, described block (9) has four, and these four blocks (9) are spaced apart and arranged between four air inlet ducts (10).