RU2608030C1 - Pneumatic tire pressure regulator - Google Patents

Abstract

FIELD: motor industry.

SUBSTANCE: invention relates to automotive industry. Pressure regulator consists of a body with a cylindrical cavity restricted with walls, a bottom and a cover; a channel to supply the body cavity with air under pressure and a channel to discharge air from the body to the tire and from the tire; a membrane limiting the cavity formed in the body under the cover; a diaphragm installed inside the body cavity and separating it into two chambers: a chamber under the diaphragm and a chamber above the diaphragm; the first seat and the second seat. Hole with the first seat is located in the body bottom and is connected with the channel of air supply under pressure. Diaphragm has a V-shape recess in the circumferential direction, the outer petal of which can tightly fit to the cylindrical wall of the cavity above the diaphragm. Diaphragm is a check valve passing the air only in the direction from the chamber under the diaphragm. In the chamber above the diaphragm there is a tightly and rigidly installed first cylindrical jar having a hole in the bottom with the second seat. In the first cylindrical jar there is a tightly and movably installed second cylindrical jar, in the bottom of which there is a cylindrical ring. In the cover there is a cavity connected to the cavity of the second jar and a spring resting on a washer adjacent to the membrane. In the upper end of the cover there is an annular groove connected with the atmosphere with a V-shape collar, the edge of which adjoins the surface of the annular groove.

EFFECT: lower labor input for making the pressure regulator at higher speed of its response to changing pressure in a pneumatic tire.

4 cl, 6 dwg

Description

The invention relates to devices for regulating the pressure in pneumatic tires and is intended for use on wheeled vehicles.

Known pressure regulator in the tires of wheeled vehicles (patent RU No. 121775 from 02.28.2012), consisting of a housing having a cavity bounded by walls, bottom and cover;

- threaded connection of the cover with the housing;

- a channel for supplying air to the cavity of the air casing under pressure and a channel for discharging air from the casing into the tire and from the tire, with a threaded thread for the fitting in at least one of the channels;

- a membrane bounding the cavity formed in the housing, connected to the channel for supplying air under pressure;

- springs installed between the cover and the membrane;

- a valve (spool) installed in the bottom of the casing and connected by a rod to the membrane, having a transverse hole in the spool, used to connect the channels for supplying pressure air to the casing and bleeding air into the pneumatic tire, as well as for separating the channels when the spool is displaced when the specified value is exceeded pressure level in the air supply channel;

- an exhaust valve used to release air from a pneumatic tire when a predetermined pressure level in it is exceeded.

A disadvantage of the known pressure regulator is the low resource and reduced reliability due to the rapid wear of the o-rings on the spool due to their interaction with the edges of the holes connecting the channels for supplying pressure air to the body cavity and air exhaust from the body to the tire; in the absence of o-rings, significant air leaks are inevitable, leading to inefficient operation of the pressure regulator.

A known design of a pressure regulator in a tire of a pneumatic wheel (US Pat. No. 4,678,017 of July 1, 1985, US No. 4883105 of September 12, 1988 and US No. 4893664 of September 12, 1988), consisting of

- housing with a cavity bounded by walls, bottom and cover;

- threaded connections;

- covers with housing;

- a channel for supplying air to the cavity of the air casing under pressure and a channel for exhausting air from the casing into the tire and from the tire, with a threaded thread for a fitting at the beginning of each channel;

- a membrane bounding the cavity formed in the housing under the lid, connected to the channel for supplying air under pressure;

- a diaphragm installed in the body cavity and dividing it into two cameras: a camera under the diaphragm and a camera above the diaphragm;

- the first saddle in contact with the first plane of the diaphragm formed at the outlet of the hole connecting the air supply channel to the chamber under the diaphragm,

- a second saddle in contact with the second plane of the diaphragm formed at the outlet of the hole connecting the duct to the tire with the chamber above the diaphragm,

- a safety elastic valve in the bottom of the housing, which closes with a rapid increase in air pressure in the pneumatic tire.

A disadvantage of the known design of the pressure regulator is the high complexity of manufacturing and reduced speed due to the significant mass of the diaphragm and two springs. The disadvantage of the design of the pressure regulator according to US patent No. 4893664 is the lack of a third channel (exhaust) to relieve excess pressure from the tire directly into the atmosphere. The third channel is necessary to reduce the time for lowering the pressure in the tire due to the absence of additional resistances.

Known valve models communicate a tire with a pressure supply line, respectively, overpressure is released through the supply line, which has increased additional resistance due to the length and diameter of the pipelines, connecting fittings, additional valves.

The technical problem solved by the invention is to reduce the complexity of manufacturing taxiways while increasing speed on pressure changes in a pneumatic tire.

The technical problem is solved in the design of the pressure regulator, consisting of

- housing with a cavity bounded by walls, bottom and cover;

- threaded connections;

- covers with housing;

- a channel for supplying air to the cavity of the air casing under pressure and a channel for exhausting air from the casing into the tire and from the tire, with a threaded thread for a fitting at the beginning of each channel;

- a membrane bounding the cavity formed in the housing under the lid, connected to the channel for supplying air under pressure;

- a diaphragm installed in the body cavity and dividing it into two cameras: a camera under the diaphragm and a camera above the diaphragm;

- the first saddle in contact with the first plane of the diaphragm formed at the outlet of the hole connecting the air supply channel to the chamber under the diaphragm,

- a second saddle in contact with the second plane of the diaphragm formed at the outlet of the hole connecting the duct to the tire with the chamber above the diaphragm,

wherein

- the cavity formed in the housing is a cylindrical step, limited by cylindrical surfaces and the bottom of the housing;

- the hole with the first saddle is located in the bottom of the housing and is connected to the channel for supplying air under pressure;

- the diaphragm has parallel first and second planes, limiting it in thickness, and a V-shaped recess around the circumference, the outer lobe of which can fit snugly against the cylindrical wall of the cavity above the diaphragm at a pressure acting on the V-shaped recess exceeding the pressure acting from cavities under the diaphragm; the diaphragm is located in the cylindrical cavity with the possibility of movement relative to the wall of the cylindrical surface and is a check valve that allows air to pass only in the direction from the chamber under the diaphragm into the chamber above the diaphragm;

- in the chamber above the diaphragm, a first cylindrical cup is installed hermetically and motionlessly, the height of which is less than the depth of the chamber above the diaphragm, having a hole in the bottom with a second saddle in contact with the upper plane of the diaphragm and an extension adjacent to the bottom;

- in the first cylindrical glass, a second cylindrical glass is installed hermetically and movably, in the bottom of which a cylindrical ring is installed, the dimensions of which exceed the dimensions of the holes in the bottom of the first cylindrical glass, and an annular cavity is formed between the expansion in the first cylindrical glass and the surface of the second glass, connected at least at least one hole with the inner cavity of the second glass;

- the membrane has a Central hole, the size of which exceeds the size of the cavity of the second glass, and is connected to the upper end of the wall of the second glass;

- in the lid there is a cavity connected to the cavity of the second glass;

- a spring is installed between the lid and the second glass, resting on a washer adjacent to the membrane;

- in the upper end of the lid there is an annular groove connected to the atmosphere with a V-shaped cuff installed in it, at least one edge of which fits snugly against the surface of the annular groove.

To provide additional functions that simplify maintenance of the pneumatic tire of the wheel, the chamber above the diaphragm is connected by an opening to the air exhaust channel into the tire, a crane is installed in the bottom of the casing with the possibility of blocking the aforementioned hole, and there is also an opening connecting the chamber above the diaphragm with the atmosphere with it installed valve.

The technical effect - reducing the complexity of manufacturing taxiways with increasing speed on pressure changes in the pneumatic tire - is achieved due to the following distinctive signs of taxiways:

- the cavity formed in the housing is a cylindrical step, limited by cylindrical surfaces and the bottom of the housing;

- the hole with the first saddle is located in the bottom of the housing and is connected to the channel for supplying air under pressure;

- the diaphragm has parallel first and second planes, limiting it in thickness, and a V-shaped recess around the circumference, the outer lobe of which can fit snugly against the cylindrical wall of the cavity above the diaphragm at a pressure acting on the V-shaped recess exceeding the pressure acting from cavities under the diaphragm; the diaphragm is located in the cylindrical cavity with the possibility of movement relative to the wall of the cylindrical surface and is a check valve that allows air to pass only in the direction from the chamber under the diaphragm into the chamber above the diaphragm;

- in the chamber above the diaphragm, a first cylindrical cup is installed hermetically and motionlessly, the height of which is less than the depth of the chamber above the diaphragm, having a hole in the bottom with a second saddle in contact with the upper plane of the diaphragm and an extension adjacent to the bottom;

- in the first cylindrical glass, a second cylindrical glass is installed hermetically and movably, in the bottom of which a cylindrical ring is installed, the dimensions of which exceed the dimensions of the holes in the bottom of the first cylindrical glass, and an annular cavity is formed between the expansion in the first cylindrical glass and the surface of the second glass, connected at least at least one hole with the inner cavity of the second glass;

- the membrane has a Central hole, the size of which exceeds the size of the cavity of the second glass, and is connected to the upper end of the wall of the second glass;

- in the lid there is a cavity connected to the cavity of the second glass;

- a spring is installed between the lid and the second glass, resting on a washer adjacent to the membrane;

- in the upper end of the lid there is an annular groove connected to the atmosphere with a V-shaped cuff installed in it, at least one edge of which fits snugly against the surface of the annular groove.

To provide additional functions that simplify maintenance of the pneumatic tire of the wheel, the chamber above the diaphragm is connected by an opening to the air exhaust channel into the tire, a crane is installed in the bottom of the casing with the possibility of blocking the aforementioned hole, and there is also an opening connecting the chamber above the diaphragm with the atmosphere with it installed valve.

The specified set of distinctive features of the RD is not found during patent information research, therefore, the invention meets the criterion of "novelty."

The set of distinctive features of the RD does not follow clearly from the prior art, therefore, the invention meets the criterion of "inventive step".

In FIG. 1 shows the construction of a pressure regulator.

In FIG. 2 - design of taxiway in the state of inflation of the pneumatic tire.

In FIG. 3 - RD design in the state of unloading of the pneumatic tire.

In FIG. 4 - design of taxiway in the state of air release from the pneumatic tire into the atmosphere.

In FIG. 5 - taxiway design in the state of a pneumatic tire disconnected by a crane from the pneumatic line.

In FIG. 6 - design of taxiway in the state of air exhaust from the pneumatic tire through the valve.

The pressure regulator (Fig. 1-6) consists of a housing 1 with a cylindrical step cavity 2, limited by cylindrical surfaces 3, bottom 4 and cover 5;

- threaded connections 6 of the cover 5 with the housing 1;

- channel 7 formed by the holes 7 a, 7b and 7c for supplying air into the cavity 2a and pressurized channel 8 with a hole 8, air from the cavity 2a of the pneumatic tire (not shown) and removal of the tire; threaded threads 9 a and 9b for fittings (not shown) at the beginning of channels 7 and 8;

- a membrane 10 separating the cavity 11 under the cover 5, from the cavity 2 in the housing 1;

- an annular groove 12 in the lid 5 connected to the atmosphere by openings 12a mounted in the groove 12 with a V-shaped cuff 13, at least one thin edge 14 of which fits snugly against the surface of the annular groove 12, with the possibility of bending for air to pass from the cavity 11 through openings 12a to the atmosphere;

- a diaphragm 15, which is a check valve installed in the cavity 2 of the housing 1 and separating it into two chambers: a chamber 16 below the diaphragm and a chamber 17 above the diaphragm having a parallel first plane 15 a and a second plane 15 b, limiting the diaphragm 15 in thickness, and A V-shaped recess 18 at the periphery, the outer lobe 19 of which can fit snugly against the cylindrical wall 20 at a pressure acting on the surface of the V-shaped recess 18, exceeding the pressure acting from the cavity 16, and allow air to pass only in the direction camera laziness 17;

- the first saddle 21 formed at the outlet of the hole 7c in contact with the first plane 15 a ,

- installed in the chamber 17 hermetically and motionlessly the first cylindrical glass 22, the height of which is less than the depth of the chamber 17, having in the bottom 22 a hole 23 with a second seat 24 in contact with the upper plane 15b of the diaphragm 15;

- adjacent to the bottom of the extension 25, connected to the hole 8 a ;

- a second cylindrical cup 26 mounted sealingly and slidably in the first cylindrical cup 22, a bottom 26 and which sealing ring 27 whose dimensions exceed the dimensions of the holes 23 and between the extension 25 and the surface of the second glass 26 is formed by annular cavity 28, connected at at least one hole 28a with an internal cavity 29 of the second glass 26 connected to the cavity 11 of the cover 4;

- connection of the membrane 10 with the upper end 30 of the second glass 26;

- a spring 31 installed between the cover 4 and the second cup 26, resting on a washer 32 adjacent to the membrane 10.

To give additional functions that simplify maintenance of the pneumatic tire of the wheel, the chamber 17 above the diaphragm 15 is connected by an additional hole 8b to the channel 8, a crane 32 is installed in the bottom 4 of the housing 1 (Fig. 4, 6) with the possibility of overlapping the aforementioned hole 8b, and there is also a hole 33 with a valve 34 installed therein, connecting the chamber 17 to the atmosphere.

The operation of the pressure regulator is carried out in the following order.

To inflate the pneumatic tire, compressed air is supplied to the channel 7 (Fig. 2) and through the holes 7b and 7c acts on the diaphragm 15. The diaphragm 15 moves upward and, by contacting the plane 15b with the seat 24, closes the hole 23 in the cup 22. The petal 19 of the diaphragm 15 bends, and air enters the extension 25 and through the hole 8A and channel 8 to a pneumatic tire (not shown). The process of inflation of the pneumatic tire.

At the same time, compressed air enters the membrane 10 through the channel 7a, and, overcoming the resistance of the spring 31, the membrane 10 bends, the glass 26 moves upward, opening the hole 23 closed by the plane 15b of the diaphragm 15.

To relieve pressure from the holes 7 a , 7b, 7c, the air supply to the channel 7 is stopped (Fig. 3); compressed air from the channel 8 presses the lobe 19 against the wall 20, the diaphragm 15 with the plane 15a to the saddle 21; under the action of the spring 31, the cup 26 moves down, closes the hole 31, separating the channels 7 and 8. The process of unloading the holes 7a, 7b, 7c from the pressure ends.

To discharge air from the pneumatic tire into the channel 7 (Fig. 4), compressed air is supplied under pressure below the pressure in the pneumatic tire. The diaphragm 15 remains pressed against the seat 21, through the hole 7a, compressed air enters under the membrane 10, overcoming the resistance of the spring 31, the diaphragm 10 bends, moving the glass 26 up and opening the hole 23. The compressed air from the channel 8 through the openings 23, 28, 29 enters the cavity 11 under the cover 5 in the annular groove 12; the edge 14 of the cuff 13 is folded, and compressed air is discharged into the atmosphere. At the moment when the pressures in the channels 7 and 8 are equal, the membrane 10 moves downward, the cup 26 closes the hole 23, separating the hole 8a and the annular groove 12; the discharge of air from the tire into the atmosphere ceases.

To disconnect the pneumatic tire from the channel 7 (Fig. 5) with air under pressure, close the shut-off valve 32, blocking the hole 8b, thereby disconnecting the pneumatic tire from the cavity 17 and from the channel 7 with pressure air coming from a pneumatic line (not shown).

To use the additional possibility of lowering the level of excess pressure in the pneumatic tire with the valve 32 open (Fig. 6) and stopping the air supply to the channel 7, the valve 34 is opened by pressing, the hole 8a communicates with the atmosphere, while the plane 15a of the diaphragm 15 under the action of excess pressure in the cavity 17 is pressed against the saddle 21. Air is discharged from the tire until the required pressure is reached in it.

Claims (21)

1. The pressure regulator in pneumatic tires, consisting of: - housing with a cavity bounded by walls, bottom and cover; - threaded connections of the cover with the housing; - a channel for supplying air to the cavity of the air casing under pressure and a channel for exhausting air from the casing into the tire and exhaust from the tire, with a threaded thread for the fitting at the beginning of each channel; - a membrane bounding the cavity formed in the housing under the lid, connected to the channel for supplying air under pressure; - a diaphragm installed in the body cavity and dividing it into two cameras: a camera under the diaphragm and a camera above the diaphragm; - the first saddle in contact with the first plane of the diaphragm formed at the outlet of the hole connecting the air supply channel to the chamber under the diaphragm, - a second saddle in contact with the second plane of the diaphragm formed at the outlet of the hole connecting the duct to the tire with the chamber above the diaphragm, characterized in that - the cavity formed in the housing is a cylindrical step, limited by cylindrical surfaces and the bottom of the housing; - the hole with the first saddle is located in the bottom of the housing and is connected to the channel for supplying air under pressure; - the diaphragm has parallel first and second planes, limiting it in thickness, and a V-shaped recess around the circumference, the outer lobe of which can fit snugly against the cylindrical wall of the cavity above the diaphragm at a pressure acting on the V-shaped recess exceeding the pressure acting from cavities under the diaphragm; the diaphragm is located in the cylindrical cavity with the possibility of movement relative to the wall of the cylindrical surface and is a check valve that allows air to pass only in the direction from the chamber under the diaphragm into the chamber above the diaphragm; - in the chamber above the diaphragm, a first cylindrical cup is installed hermetically and motionlessly, the height of which is less than the depth of the chamber above the diaphragm, having a hole in the bottom with a second saddle in contact with the upper plane of the diaphragm and an extension adjacent to the bottom; - in the first cylindrical glass, a second cylindrical glass is installed hermetically and movably, in the bottom of which a cylindrical ring is installed, the dimensions of which exceed the dimensions of the holes in the bottom of the first cylindrical glass, and an annular cavity is connected between the expansion in the first cylindrical glass and the surface of the second glass, at least one hole with the inner cavity of the second glass; - the membrane has a Central hole, the size of which exceeds the size of the cavity of the second glass, and is connected to the upper end of the wall of the second glass; - in the lid there is a cavity connected to the cavity of the second glass; - a spring is installed between the lid and the second glass, resting on a washer adjacent to the membrane; - in the upper end of the lid there is an annular groove connected to the atmosphere with a V-shaped cuff installed in it, at least one edge of which fits snugly against the surface of the annular groove. 2. The pressure regulator according to claim 1, characterized in that the chamber above the diaphragm is connected by an opening to a channel for exhausting air into the tire, and a valve is installed in the casing with the possibility of closing said opening. 3. The pressure regulator according to claim 1, characterized in that the housing has an opening with a valve connecting the chamber above the diaphragm to the atmosphere. 4. The pressure regulator according to claim 1, characterized in that the chamber above the diaphragm is connected by an opening to the air exhaust channel into the tire, a crane is installed in the bottom of the casing with the possibility of closing the said hole, and there is also an opening connecting the chamber above the diaphragm with the atmosphere, with in it with a valve.

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