CN201133502Y - Automotive tyre valve - Google Patents

Abstract

The utility model discloses an automobile tire valve and relates to a vehicle inflation and deflation valve. The structure of the utility model is as below from top to bottom: a dust cap (7) is arranged on the top end of a valve cap (6); the valve cap (6) and a valve (2) are connected together by an elastic inner block (4); a diaphragm (11) is clampped between the valve cap (6) and the valve (2); the diaphragm (11) divides the whole valve into an upper air chamber and a lower air chamber; a valve core (9) and a nut (8) are connected by thread to fix two diaphragm discs (10) on the upper and the lower surfaces of the diaphragm (11); springs (5) are arranged between the valve cap (6) and the diaphragm discs (10) and compress the valve core (9) on the hole end of the inner cavity of the valve (2) with compressure; an O-shaped gasket (3) is arranged in the groove of the valve core (9) and plays the role of sealing; an A opening (a) and a B opening (b) of the valve (2) are provided with I-shaped gaskets (1). The automobile tire valve has good pressure keeping effect to the tire pressure, simplifies the structure of a central inflation and deflation system and reduces the hardware deployment of the vehicle.

Description

A kind of automobile tyre valve

Technical field

The utility model relates to a kind of automobile tire charging and discharging valve, relates in particular to a kind of automobile tyre valve of cross-country vehicle tire central air-charging and air-discharging system.

Background technique

Think that abroad automobile tyre valve is the parts of most critical in the Center Tyre Inflation.The improvement of external Center Tyre Inflation structure is nearly all relevant with the variation of automobile tyre valve with development.The structure of automobile tyre valve, function and characteristics are not only determining the structure of the maneuver control device of system, are determining the sealing requirements of rotary seal air chamber and influence ring wear speed, are also determining to charge and discharge the speed of gas speed; Affect the reliability of system's tire pressurize and the convenience of operation in addition.

The automobile tyre valve of most of central air-charging and air-discharging systems of Russia, the current equipment of the U.S. is the form that adopts blocking-valve, and reality only is a hand switch that is contained in tyre beads, opening and closing after it must stop.If close-lock valve when travelling then can't detection wheel air pressure and regulating wheel air pressure; If the palpus using system must stop and open locking valve, under urgent or dangerous situation, all is disadvantageous.If open blocking-valve when travelling, the rotary seal air chamber of tire will be filled with pressed gas, has quickened the wearing and tearing of rotating seal ring.Because tyre cavity is communicated with the rotary seal air chamber, the tire pressurize is too big to the dependence of rotating seal ring sealability, and the pressurize of tire has just become problem.If system pipeline gas leakage or fracture, blocking-valve do not keep the tire pressure function automatically, tire pressure will descend thereupon.

At present, French Lapie's nail (unit of length) company has developed Lapie's nail (unit of length) automobile tyre valve, U.S. Eaton has developed the Eton automobile tyre valve.The relation of Lapie's nail (unit of length) automobile tyre valve and rotary seal air chamber is unidirectional input, when pressure measurement, promptly the pressurized gas that come by air chamber enter automobile tyre valve, but when the automobile tyre valve internal air pressure is higher than the pressure of rotary seal air chamber, air-flow can not be through the automobile tyre valve reverse flow to the rotary seal air chamber, single tire pressure measurement mode can only be adopted when therefore this automobile tyre valve is used for central air-charging and air-discharging system, single bridge pressure measurement can not be used for.Wish simplified structure, the manufacturer that reduces cost or user for some, the system that requires single bridge or many bridges tire to control together can't adopt this automobile tyre valve.The structural principle of Lapie's nail (unit of length) automobile tyre valve does not provide the basis to simplified system, and another problem of Lapie's nail (unit of length) automobile tyre valve is that the measured value and the actual value of tire pressure exists than large deviation.The Eton automobile tyre valve has overcome two problems of Lapie's nail (unit of length) automobile tyre valve.But negative pressure (vacuum) control is adopted in the venting work of Eton automobile tyre valve.To this requirement, some automobile can be used original vacuum generating device, otherwise should dispose separately.The Eton automobile tyre valve also requires the rotary seal air chamber should have the two way sealed function, for the vehicle that adopts the planet gear type wheel reductor, this two way sealed Capability Requirement should be stricter, in case seal badly, gear oil in the retarder can be owing to the air chamber negative pressure flows in sealed air chamber, automobile tyre valve and the tire.

Summary of the invention

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect that prior art exists, and a kind of automobile tyre valve of cross-country vehicle tire central air-charging and air-discharging system is provided.

The purpose of this utility model is achieved in that

Develop a kind of air chamber of Rational structure, realize pressurize, guarantee in the vehicle driving process inflation, venting, pressure measurement and pressurize tire to tire pressure.

Automobile tyre valve comprises card, spring, valve gap, dust cap, nut, spool, diaphragm dish and diaphragm in worker's shape seal ring, valve body, O-ring seals, the elasticity.

Its annexation is: be contained in the valve gap top for dust cap from top to bottom, valve gap and valve body are by card connection in the elasticity together, accompany diaphragm between valve gap and the valve body, diaphragm is divided into two air chambers up and down with whole valve body, spool is fixed on two diaphragm dishes by being threaded the upper and lower surface of diaphragm with nut, spring is between valve gap and diaphragm dish and lean on its compressive force spool to be pressed in the nose end of body cavity, O-ring seals is contained in the groove of spool and seals, and worker's shape seal ring is housed in the A mouth of valve body and the B mouth.

Working principle of the present utility model is:

The utility model only provides a valve assembly, is matching used with special detection control system.

When not having air-flow when the A mouth enters valve body, the compressive force of spring is pressed in spool on the air-flow path of valve body, and A mouth and B mouth turn-off, and then automobile tyre valve is in off working state; When air-flow when the A mouth enters valve body, air-flow overcomes the compressive force of spring, and spool is upwards pushed away the air-flow path of valve body, the A mouth is communicated with the B mouth, then automobile tyre valve is in running order.

The utlity model has following advantage and good effect:

1, valve body structure is simple, low cost of manufacture;

2, effective to the pressurize of tire pressure;

The rotary seal air chamber does not have air pressure when 3, guaranteeing vehicle driving, thereby reduces the wearing and tearing of seal ring;

4, simplified the structure of central air-charging and air-discharging system and reduced the hardware configuration of vehicle.

Description of drawings

Fig. 1 is the automobile tyre valve structural drawing.

Wherein:

1-worker's shape seal ring; The 2-valve body; 3-O shape seal ring;

Card in the 4-elasticity; The 5-spring; The 6-valve gap;

The 7-dust cap; The 8-nut; The 9-spool;

10-diaphragm dish; The 11-diaphragm;

The a-A mouth; The b-B mouth.

Embodiment

Further specify below in conjunction with drawings and Examples:

As Fig. 1, automobile tyre valve comprises card (4), spring (5), valve gap (6), dust cap (7), nut (8), spool (9), diaphragm dish (10), diaphragm (11) in worker's shape seal ring (1), valve body (2), O-ring seals (3), the elasticity;

Its annexation is: be contained in valve gap (6) top for dust cap (7) from top to bottom, valve gap (6) links together by card (4) in the elasticity with valve body (2), accompany diaphragm (11) between valve gap (6) and the valve body (2), diaphragm (11) is divided into two air chambers up and down with whole valve body, spool (9) is fixed on two diaphragm dishes (10) by being threaded the upper and lower surface of diaphragm (11) with nut (8), spring (5) is positioned between valve gap (6) and the diaphragm dish (10) and spool (9) is pressed in the nose end of valve body (2) inner chamber by its compressive force, O-ring seals (3) is contained in the groove of spool (9) and seals, and in the A mouth (a) of valve body (2) and the B mouth (b) worker's shape seal ring (1) is housed.

Worker's shape seal ring (1) is a kind of " worker " font rubber seal;

Valve body (2) is a cast aluminium structural member, and its function is installing space to be provided and to form a pressure limiting air chamber for other parts:

O-ring seals (3) is a kind of " O " font rubber seal circle;

Card (4) is a standard piece in the elasticity, selects GB/T 893.1-1986 for use;

Spring (5) is a kind of cylindrical helical compression spring;

Valve gap (6) is a cast aluminium structural member, and its function is to provide support for spring 23.5;

Dust cap (7) is a rubber revolving part that has exhaust port, and its function is exhaust and dustproof;

Nut 8 is standard piece, selects GB/T 41-2000 for use;

Spool (9) is the screwed revolving part of an embedded rubber parts, and its function is the air-flow path that the rubber parts of inner embedding is blocked valve body (2);

Diaphragm dish (10) is a revolving part, and its function is fixed spool (9):

Diaphragm (11) is a kind of thin rubber revolving part, and its function is that the displacement for spool (9) provides support.

Claims (1)

1, a kind of automobile tyre valve is characterized in that:

Comprise card (4), spring (5), valve gap (6), dust cap (7), nut (8), spool (9), diaphragm dish (10), diaphragm (11) in worker's shape seal ring (1), valve body (2), O-ring seals (3), the elasticity;

Its annexation is: be contained in valve gap (6) top for dust cap (7) from top to bottom, valve gap (6) links together by card (4) in the elasticity with valve body (2), accompany diaphragm (11) between valve gap (6) and the valve body (2), diaphragm (11) is divided into two air chambers up and down with whole valve body, spool (9) is fixed on two diaphragm dishes (10) by being threaded the upper and lower surface of diaphragm (11) with nut (8), spring (5) is positioned between valve gap (6) and the diaphragm dish (10) and spool (9) is pressed in the nose end of valve body (2) inner chamber by its compressive force, O-ring seals (3) is contained in the groove of spool (9) and seals, and in the A mouth (a) of valve body (2) and the B mouth (b) worker's shape seal ring (1) is housed.

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