CN117167526A - ECAS distribution solenoid valve assembly - Google Patents

Abstract

The utility model provides an ECAS distribution solenoid valve assembly, includes valve body and solenoid valve, set up the guide gas passageway between valve body and the solenoid valve, form valve body inner chamber and gas storage chamber in the valve body, form the solenoid valve inner chamber in the solenoid valve, set up valve body distribution subassembly in the valve body inner chamber, set up solenoid valve distribution subassembly in the solenoid valve inner chamber, solenoid valve distribution subassembly carries out on-off control to solenoid valve inner chamber and gas storage chamber, set up the air inlet on the valve body, valve body distribution subassembly carries out on-off control to air inlet and valve body inner chamber, for traditional altitude valve, the Ecas solenoid valve adopts more advanced electromagnetic control technique, makes it can realize higher precision. In particular, the electromagnetic control system of the Ecas electromagnetic valve can realize faster and more accurate control on the opening and closing of the valve, so that the valve can regulate the output quantity of gas and liquid more accurately.

Description

ECAS distribution solenoid valve assembly

Technical Field

The invention relates to the technical field of ECAS, in particular to an ECAS air distribution electromagnetic valve assembly.

Background

ECAS introduction the conventional air suspension control mode employs a mechanical height valve, i.e., the inflation and deflation of the air bags is regulated by the opening of the height valve, thereby maintaining a constant ride height of the vehicle. With popularization of system application and development of vehicle control technology, the electronic control gradually replaces the traditional mechanical control electronic control system, so that operation comfort and response sensitivity are improved, and a plurality of auxiliary functions can be added. The existing high-level valve is low in precision and cannot control the opening and closing of the valve more quickly and accurately.

Disclosure of Invention

In view of this, the present invention provides an ECAS valve assembly.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the ECAS gas distribution electromagnetic valve assembly comprises a valve body and an electromagnetic valve, wherein a pilot gas channel is arranged between the valve body and the electromagnetic valve, a valve body inner cavity is formed in the valve body, an electromagnetic valve inner cavity is formed in the electromagnetic valve, a valve body gas distribution assembly is arranged in the valve body inner cavity, the electromagnetic valve gas distribution assembly is arranged in the electromagnetic valve inner cavity, the electromagnetic valve gas distribution assembly performs on-off control on the electromagnetic valve inner cavity and the gas storage cavity, an air inlet is formed in the valve body, and the valve body gas distribution assembly performs on-off control on the air inlet and the valve body inner cavity.

Preferably, the valve body gas distribution assembly divides the valve body inner cavity into an inner cavity part and a valve body gas storage part, the valve body gas storage part is communicated with the gas inlet, a pilot gas inlet channel is arranged between the valve body gas storage part and the gas storage cavity, and the valve body gas storage part is communicated with the gas storage cavity through the pilot gas inlet channel.

Preferably, the valve body gas distribution assembly comprises a valve body first gas distribution assembly, a valve body second gas distribution assembly and a valve body third gas distribution assembly, the valve body first gas distribution assembly is arranged in a valve body inner cavity, two valve cavities corresponding to the valve body second gas distribution assembly and the valve body third gas distribution assembly are arranged on one side of the valve body inner cavity, the valve body second gas distribution assembly and the valve body third gas distribution assembly are arranged in the corresponding valve cavities, corresponding output ports are formed in the bottoms of the valve cavities of the valve body second gas distribution assembly and the valve body third gas distribution assembly, the valve body inner cavity and the two valve cavities are mutually communicated, the valve body gas distribution assembly comprises three electromagnetic valve groups with the same structure, three electromagnetic valve inner cavities for installing the electromagnetic valve groups are formed in the electromagnetic valve, the electromagnetic valve inner cavities are communicated with the gas storage cavities, and the electromagnetic valve groups control on-off between the corresponding electromagnetic valve inner cavities and the gas storage cavities.

Preferably, the first valve body air distribution assembly comprises a large piston, a large spring, a sealing gasket and a first spring, the large piston is arranged on the upper portion of the inner cavity of the valve body, a mounting annular groove is formed in the cavity wall of the inner cavity of the valve body, the large spring is sleeved on the large piston, one end of the large spring extends into the mounting annular groove, the first spring is arranged on the lower portion of the inner cavity of the valve body, the sealing gasket is arranged between the first spring and the large piston, and the first spring props against the sealing gasket to separate the upper portion and the lower portion of the inner cavity of the valve body.

Preferably, the electromagnetic valve group comprises an electromagnetic valve coil, a static iron core, a movable iron core and a conical small spring, the static iron core is arranged on the upper portion of an electromagnetic valve inner cavity, the movable iron core is arranged on the lower portion of the electromagnetic valve inner cavity, the conical small spring is sleeved on the bottom of the movable iron core, one end of the conical small spring is connected with the cavity wall on the lower portion of the electromagnetic valve inner cavity, and a communication port communicated with the air storage cavity is formed in the bottom of the electromagnetic valve inner cavity.

Preferably, the top and bottom of the movable iron core are provided with sealing gaskets, the sealing gaskets at the top of the movable iron core are in sealing connection with the static iron core, and the sealing gaskets at the bottom of the movable iron core are in sealing connection with the cavity wall of the electromagnetic valve inner cavity at the edge of the communication port.

Preferably, the valve body third air distribution assembly and the valve body second air distribution assembly are composed of a small piston, a spring seat and a supporting spring, the small piston and the supporting spring are respectively arranged at the upper part and the lower part of the corresponding valve cavity, a sealing gasket is arranged between the small piston and the supporting spring, and the sealing gasket partitions the valve cavity.

Preferably, an upper cover and a partition plate are arranged between the valve body and the electromagnetic valve, the upper cover is arranged at the top end of the partition plate, an electromagnetic valve set mounting groove is formed in the upper cover, the electromagnetic valve set mounting groove is communicated with the inner cavity of the electromagnetic valve, and the conical small spring is arranged in the electromagnetic valve set mounting groove.

Preferably, the partition board is arranged between the upper cover and the valve body, one side of the top end of the partition board is concavely arranged, a gas storage cavity is formed between the concaved part of the partition board and the upper cover, and a partition board through hole for communicating the gas storage cavity with the inner cavity of the valve body is formed in the partition board.

The invention has the beneficial effects that: compared with the traditional altitude valve, the Ecas electromagnetic valve adopts a more advanced electromagnetic control technology, so that the Ecas electromagnetic valve can realize higher precision. In particular, the electromagnetic control system of the Ecas electromagnetic valve can realize faster and more accurate control on the opening and closing of the valve, so that the valve can regulate the output quantity of gas and liquid more accurately.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the pressure maintaining state structure of the present invention;

FIG. 2 is a schematic diagram of the air intake state structure of the present invention;

FIG. 3 is a schematic view of the exhaust state structure of the present invention;

FIG. 4 is an enlarged view at A of FIG. 1;

FIG. 5 is an enlarged view of portion B of FIG. 1;

FIG. 6 is a schematic diagram of the structure of the present invention;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;

fig. 8 is a schematic view of the interior of the exhaust passage.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention will be further described with reference to the drawings.

The invention provides the following technical scheme:

in order to achieve the purpose of light weight, the valve body, the piston, the upper cover, the partition plate and other parts are replaced by plastic materials, so that the performance is improved, and the light weight of the product is ensured.

As shown in fig. 1-7, the invention discloses an ECAS air distribution electromagnetic valve assembly, which comprises a valve body 1 and an electromagnetic valve 2, wherein a valve body inner cavity 3 and an air storage cavity 7 are formed in the valve body 1, an electromagnetic valve inner cavity 4 is formed in the electromagnetic valve 2, a valve body air distribution assembly 5 is arranged in the valve body inner cavity 3, an electromagnetic valve air distribution assembly 6 is arranged in the electromagnetic valve inner cavity 4, the electromagnetic valve air distribution assembly 6 performs on-off control on the electromagnetic valve inner cavity 4 and the air storage cavity 7, an air inlet 8 is arranged on the valve body 1, and the valve body air distribution assembly 5 performs on-off control on the air inlet 8 and the valve body inner cavity 3. The valve body air distribution assembly and the electromagnetic valve air distribution assembly are arranged, so that higher precision can be realized. In particular, the electromagnetic control system of the Ecas electromagnetic valve can realize faster and more accurate control on the opening and closing of the valve, so that the valve can regulate the output quantity of gas and liquid more accurately.

Further, the valve body gas distribution assembly 5 divides the valve body inner cavity 3 into an inner cavity part 9 and a valve body gas storage part 10, the valve body gas storage part 10 is communicated with the gas inlet 8, a pilot gas inlet channel 11 is arranged between the valve body gas storage part 10 and the gas storage cavity 7, and the valve body gas storage part 10 is communicated with the gas storage cavity 7 through the pilot gas inlet channel 11. Further, the valve body air distribution assembly 5 comprises a valve body first air distribution assembly 12, a valve body second air distribution assembly 12 (13) and a valve body third air distribution assembly 14, the valve body first air distribution assembly 12 is arranged in the valve body inner cavity 3, one side of the valve body inner cavity 3 is provided with two valve cavities 15 corresponding to the valve body second air distribution assembly 12 and the valve body third air distribution assembly 14, the valve cavities 12 and the valve body third air distribution assembly 14 are arranged in the corresponding valve cavities 15, the valve cavities 15 comprise a second valve body inner cavity 16 for installing the valve body second air distribution assembly 12 and a third valve body inner cavity 17 for installing the valve body third air distribution assembly 14, corresponding inner cavity channels 18 are respectively arranged between the valve body inner cavity 3 and the second valve body inner cavity 16 and between the second valve body inner cavity 16 and the third valve body inner cavity 17, the inner cavity channel 18 has the functions of inner cavity overgas and piston exhaust, corresponding output ports 19 are formed in the bottoms of valve cavities 15 of the valve body second gas distribution assembly 12 and the valve body third gas distribution assembly 14, the valve body inner cavity 3 and the two valve cavities 15 are communicated with each other, specifically, the electromagnetic valve gas distribution assembly 6 comprises three electromagnetic valve groups 20 with the same structure, the electromagnetic valve gas distribution assembly 6 comprises a first electromagnetic valve gas distribution assembly 21, a second electromagnetic valve gas distribution assembly 22 and a third electromagnetic valve gas distribution assembly 23, three electromagnetic valve inner cavities 4 for installing the electromagnetic valve groups 20 are formed in the electromagnetic valve 2, the electromagnetic valve inner cavities 4 are communicated with the gas storage cavities 7, and the electromagnetic valve groups 20 control on-off between the corresponding electromagnetic valve inner cavities 4 and the gas storage cavities 7.

Further, the valve body first air distribution assembly 12 comprises a large piston 24, a large spring 25, a sealing gasket 26 and a first spring 27, the large piston 24 is arranged at the upper part of the valve body inner cavity 3, a mounting annular groove 28 is formed on the cavity wall of the valve body inner cavity 3, the large spring 25 is sleeved on the large piston 24, one end of the large spring 25 stretches into the mounting annular groove 28, the first spring 27 is arranged at the lower part of the valve body inner cavity 3, the sealing gasket 26 is arranged between the first spring 27 and the large piston 24, and the first spring 27 props against the sealing gasket 26 to separate the upper part and the lower part of the valve body inner cavity 3. Specifically, the air inlet and pressure maintaining of the product are realized by using the static friction structure of the piston and the sealing gasket, and compared with the function realized by dynamic friction of the piston and the diaphragm of the existing structure, the static friction is more stable than the dynamic friction structure, and the service life is longer. Specifically, the cavity wall of the valve body cavity 3 protrudes to form a stepped structure, wherein the inner diameter of one side of the cavity part 9 close to the valve body gas storage part 10 is smaller than the inner diameter of the valve body gas storage part 10, in the design, the outer diameter of the sealing gasket 26 is smaller than the inner diameter of the valve body gas storage part 10 and is larger than the inner diameter of one side of the valve body cavity 3 close to the valve body gas storage part 10, therefore, the sealing gasket 26 can be limited by the stepped structure protruding on the cavity wall of the valve body cavity 3, and the cavity part 9 and the valve body gas storage part 10 are propped against by the first spring 27 to seal, so that an air source entering from the air inlet 8 enters the cavity part 9 through the valve body gas storage part 10, and the design is ensured to be in an initial natural exhaust state; in this embodiment, the large piston 24 and the large spring 25 are both disposed in the inner cavity 9, the sealing gasket 26 and the first spring 27 are disposed in the valve body air storage 10, the top end of the stepped structure of the inner cavity 9 protrudes to form a limiting annular portion 29, the mounting annular groove 28 is formed between the limiting annular portion 29 and the inner wall of the upper portion of the inner cavity 9, the large spring 25 is sleeved on the upper portion of the large piston 24, one end of the large spring 25 extends into the mounting annular groove 28 to support and position, the top end of the large piston 24 is provided with a protruding portion 30 propping against the large spring 25, the protruding portion 30 limits the position of the large spring 25 on the large piston 24, and an O-shaped ring is disposed on the protruding portion 30 to be in sealing connection with the cavity wall of the inner cavity 9, so that the air tightness of the inner cavity 9 is ensured.

Further, the electromagnetic valve set 20 includes an electromagnetic valve coil (not shown), a static iron core 32, a movable iron core 33 and a small conical spring 34, the static iron core 32 is disposed on the upper portion of the electromagnetic valve inner cavity 4, the movable iron core 33 is disposed on the lower portion of the electromagnetic valve inner cavity 4, the small conical spring 34 is sleeved on the bottom of the movable iron core 33, one end of the small conical spring 34 is connected with the wall of the lower portion of the electromagnetic valve inner cavity 4, and a communication port 35 communicating with the air storage cavity 7 is formed in the bottom of the electromagnetic valve inner cavity 4. Specifically, in this embodiment, the upper cover 36 is disposed at the bottom end of the electromagnetic valve 2, the upper cover 36 is provided with an electromagnetic valve set mounting groove 37 corresponding to the electromagnetic valve set 20, the electromagnetic valve set mounting groove 37 is communicated with the electromagnetic valve cavity 4, the conical small spring 34 is disposed in the electromagnetic valve set mounting groove 37, one end of the movable iron core 33 extends into the electromagnetic valve set mounting groove 37 and is connected with the conical small spring 34, the communication port 35 is formed in the bottom groove wall of the electromagnetic valve set mounting groove 37, the cross section of the communication port 35 is in a frustum structure, the upper caliber of the communication port 35 is smaller than the lower caliber of the communication port 35, and by such structure, after the gas in the gas storage cavity 7 enters the electromagnetic valve cavity 4 through the communication port 35, the gas flow is compressed, the impact force of the gas flow to the movable iron core 33 is increased, the movable iron core 33 is pushed faster, and the circulation of the gas flow is better, rapid and smooth.

Further, the top and bottom ends of the movable iron core 33 are respectively provided with a sealing gasket 38, the sealing gasket 38 at the top end of the movable iron core 33 is in sealing connection with the static iron core 32, and the sealing gasket 38 at the bottom end of the movable iron core 33 is in sealing connection with the wall of the electromagnetic valve inner cavity 4 at the edge of the communication port 35. Specifically, in this embodiment, the top end and the bottom end of the movable iron core 33 are provided with corresponding sealing grooves 39, the sealing gasket 38 is disposed in the corresponding sealing grooves 39, after the electromagnetic valve 2 is electrified to generate magnetic force, the movable iron core 33 moves in the electromagnetic valve cavity 4, so as to be in sealing connection with the static iron core 32 or the edge of the communication port 35, the electric iron property is used for sealing with the static iron core, and the power-off movable iron core is used for sealing with the edge of the port 35. Specifically, the electromagnetic valve receives the electric signal to control the brake iron core to work, compared with the instability of the valve opened by the mechanical structure of the existing altitude valve, the ECAS electromagnetic valve is more accurate and rapid to control, and the electromagnetic valve is independent of the air distribution assembly, so that the probability of being influenced by the working condition of a product is smaller and more stable.

Further, the valve body third air distribution assembly 14 and the valve body second air distribution assembly 12 are respectively composed of a small piston 40, a spring seat 41 and a supporting spring 42, the small piston 40 and the supporting spring 42 are respectively arranged at the upper part and the lower part of the corresponding valve cavity 15, a sealing piece 43 is arranged between the small piston 40 and the supporting spring 42, and the valve cavity 15 is partitioned by the sealing piece 43.

Further, an upper cover 36 and a partition plate 44 are arranged between the valve body and the electromagnetic valve, the upper cover 36 is arranged at the top end of the partition plate 44, an electromagnetic valve set mounting groove 37 is formed in the upper cover 36, the electromagnetic valve set mounting groove 37 is communicated with the electromagnetic valve inner cavity 4, and the conical small spring 34 is arranged in the electromagnetic valve set mounting groove 37.

Further, the partition plate 44 is disposed between the upper cover 36 and the valve body 1, a top end side of the partition plate 44 is concavely disposed, a gas storage cavity 7 is formed between the concaved portion of the partition plate 44 and the upper cover 36, and a partition plate through hole (not shown) is disposed on the partition plate 44, and the partition plate through hole is communicated with the gas storage cavity 7 and the valve body cavity 3. Specifically, in this embodiment, the top and the bottom of the partition 44 are respectively provided with corresponding sealing structures between the upper cover 36 and the valve body 1, the sealing structures between the partition 44 and the upper cover 36 and between the partition 1 are the sealing grooves 46 formed in the partition 44, the second sealing elements 47 are arranged in the sealing grooves 46, two ends of the second sealing elements 47 are respectively in sealing connection with the groove walls of the sealing grooves 46 and the upper cover 36 or the valve body 1, and the number of the sealing grooves 46 is several, so that the sealing performance between the partition 44 and the upper cover 36 and the valve body 1 is further ensured, and the risk of gas leakage is reduced.

The working principle of the invention is as follows:

the initial stage:

the air inlet 8 is used for inputting an air source, the air source is divided into two parts after being input into the valve body 1, the two parts are respectively stored in the two chambers of the valve body air storage part 10 and the air storage cavity 7, and the valve body air storage part 10 and the air storage cavity 7 are communicated through the pilot air inlet channel 11. The connection/disconnection of the cavity of the valve body gas storage part 10 and the valve body inner cavity 3 is controlled by a valve body first gas distribution assembly 12. The connection/disconnection between the cavity of the air storage cavity 7 and the inner cavity part 9 of the upper cavity of the valve body 1 is controlled by the electromagnetic valve distribution assembly 6. The initial state is in a closed and sealed state under the action of the conical small spring 34 in the electromagnetic valve air distribution assembly 6 and the first spring 27 in the valve body first air distribution assembly 12, the air storage cavity 7 and the air storage cavity 7 of the valve body 1, and an air source cannot enter the valve body inner cavity 3. The large piston 24 in the valve body first air distribution assembly 12 is positioned at the upper part of the valve body inner cavity 3 under the action of the large spring 25, the large piston 24 and the sealing gasket 26 are in an open state, and the large piston 24 adopts a hollow air exhaust structure to exhaust air in the valve cavity 15 out of the atmosphere through the air exhaust channel 48.

And (3) an air inlet stage:

the air inlet 8 is input with an air source, and the air source in the air inlet 8 fills two chambers of the valve body air storage part 10 and the air storage cavity 7. The coil is electrified after the first electromagnetic valve gas distribution assembly 21 receives an electric signal, the coil generates magnetic force after the electric signal is electrified, the movable iron core 33 in the first electromagnetic valve gas distribution assembly 21 overcomes the acting force of the conical small spring 34 to absorb, the sealing gasket 38 at the rear end of the movable iron core 33 is sealed with the static iron core 32 in a closed mode after absorption, the sealing gasket 38 at the front section of the movable iron core 33 is opened with the upper cover 36, the gas storage cavity 7 and the upper cavity 49 of the valve body cavity 3 are connected with each other, the gas source is input into the valve body cavity 3, the large piston 24 in the valve body first gas distribution assembly 12 overcomes the acting force of the large spring 25 to push the large piston 24 to move downwards, and the large piston 24 contacts the sealing gasket 26 to compress the first spring 27 so that the valve body gas storage part 10 is communicated with the valve body cavity 3. The air source in the valve body air storage part 10 enters the valve body inner cavity 3 after being opened through the valve body first air distribution assembly 12, and the valve body inner cavity 3 is communicated with the second valve body inner cavity 16 and the third valve body inner cavity 17 through the inner cavity channel 18. The working principle of the second electromagnetic valve air distribution assembly 22 and the third electromagnetic valve air distribution assembly 23 is the same as that of the first electromagnetic valve air distribution assembly 21, magnetic force is generated after the electromagnetic coil is electrified, an air source of the air storage cavity 7 enters the inner cavity 16 of the second valve body and the inner cavity 17 of the third valve body, the small piston 40 in the two cavities is pushed to descend, and the small piston 40 contacts the sealing gasket 26 to compress the spring to open the total air source opening and closing structure of the valve body 1. The air source of the air storage cavity 7 of the valve body 1 enters the lower parts of the second valve body cavity 16 and the third valve body cavity 17 through the cavity channel 18, presses down the sealing gaskets 26 in the second valve body cavity 16 and the third valve body cavity 17, and outputs the air source to the corresponding output port 19.

And (3) pressure maintaining stage of an output port: the electromagnetic valve 2 receives signals to realize power failure, magnetic force disappears after the electromagnetic coil is powered off, the movable iron core 33 is reset under the action of the conical small spring 34, the sealing gasket 38 below the movable iron core 33 and the upper cover 36 are closed to block air sources from entering the first valve body cavity 3 and the second valve body cavity 16, and the sealing gasket 38 above the movable iron core 33 and the static iron core 32 open the static iron core exhaust channel 50. The small piston 40 resets under the action of the spring 42 to push the sealing gasket 38 (43), the spring seat 41 and the piston to reset, the air sources in the first valve body cavity 3 and the second valve body cavity 16 exhaust through the partition board through holes (not shown) and the static iron core exhaust channel, the sealing gasket 26 resets to close the valve body second air distribution assembly 12 and the valve body third air distribution assembly 14, and the interface of the output port 19 is blocked with the air sources in the second valve body cavity 16 and the third valve body cavity 17 to realize pressure maintaining.

And (3) an air inlet pressure maintaining stage: after the pressure of the two output ports 19 is maintained, the electromagnetic valve 2 in the first electromagnetic valve air distribution assembly 21 is powered off, the movable iron core 33 is reset under the action of the conical small spring 34, the sealing gasket 38 below the movable iron core 33 and the upper cover 36 (pilot air structure) are closed to block the air source from entering the upper cavity part 49 of the inner cavity 3 of the valve body, and the sealing gasket 38 above the movable iron core 33 and the static iron core 32 open the static iron core exhaust channel 50. The large piston 24 is reset under the action of the large spring 25, the spring 34 pushes the sealing gasket 38 to reset, the air source of the upper cavity 49 is exhausted through the static iron core exhaust channel 50 and the static iron core exhaust channel 50, the first valve body air distribution assembly is closed after the sealing gasket 26 is reset, and the air source of the air inlet is separated from the air source of the inner cavity of the valve body. The large piston 24 of the first valve body air distribution assembly is separated from the sealing gasket 26 after being reset, and because the large piston 24 adopts a hollow air exhaust structure, the valve body inner cavity and the air exhaust channel 48 are in an opening state together, air sources in the second valve body inner cavity 16 and the third valve body inner cavity 17 are connected with the valve body inner cavity through the valve body inner cavity channel, the air sources in the valve body inner cavity quickly exhaust through the air exhaust channel 48 after the air exhaust channel is opened, and the air sources in the valve cavity 15 are exhausted, so that the pressure maintaining stage is completed.

And (3) an exhaust stage:

the second electromagnetic valve gas distribution assembly 22 and the third electromagnetic valve gas distribution assembly 23 are opened after receiving the electric signals, so as to drive the valve body third gas distribution assembly 14 and the valve body second gas distribution assembly 12 (13) to be opened, and connectors (not shown) on the output port 10 (19) are connected with the second valve body inner cavity 16 and the third valve body inner cavity 17. The first electromagnetic valve gas distribution assembly 21 is in a closed state, and drives the total gas source opening and closing structure of the first valve body gas distribution assembly to be in a closed state, so that the total gas source of the gas inlet cannot enter the valve body inner cavity, the second valve body inner cavity 16 and the third valve body inner cavity 17. The air source of the output port 19 is communicated with the second valve body cavity 16 and the third valve body cavity 17, the valve body cavity is communicated through a valve body cavity channel, the hollow exhaust structure of the large piston 24 of the first valve body air distribution assembly and the exhaust channel 48 are in an open state together, the air source in the valve body cavity is exhausted to the atmosphere through the exhaust channel 48, and the exhaust stage is completed.

Referring to fig. 8, the product vent passage 48 employs an O-ring 51 and a waterproof one-way diaphragm structure 52 through which internal gases may be vented while external liquids and solids are effectively blocked by the diaphragm. Meets the protection level of IP67/IP69, and effectively prevents dust and water.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An ECAS distribution solenoid valve assembly, its characterized in that: the pilot gas valve comprises a valve body and an electromagnetic valve, wherein a pilot gas channel is arranged between the valve body and the electromagnetic valve, a valve body inner cavity and a gas storage cavity are formed in the valve body, an electromagnetic valve inner cavity is formed in the electromagnetic valve, a valve body gas distribution assembly is arranged in the valve body inner cavity, an electromagnetic valve gas distribution assembly is arranged in the electromagnetic valve inner cavity, the electromagnetic valve gas distribution assembly performs on-off control on the electromagnetic valve inner cavity and the gas storage cavity, an air inlet is formed in the valve body, and the valve body gas distribution assembly performs on-off control on the air inlet and the valve body inner cavity.

2. The ECAS valve solenoid assembly of claim 1, wherein: the valve body gas distribution assembly divides the valve body inner cavity into an inner cavity part and a valve body gas storage part, the valve body gas storage part is communicated with the gas inlet, a pilot gas inlet channel is arranged between the valve body gas storage part and the gas storage cavity, and the valve body gas storage part is communicated with the gas storage cavity through the pilot gas inlet channel.

3. The ECAS valve solenoid assembly of claim 1, wherein: the valve body gas distribution assembly comprises a valve body first gas distribution assembly, a valve body second gas distribution assembly and a valve body third gas distribution assembly, wherein the valve body first gas distribution assembly is arranged in a valve body inner cavity, one side of the valve body inner cavity is provided with two valve cavities corresponding to the valve body second gas distribution assembly and the valve body third gas distribution assembly, the valve body second gas distribution assembly and the valve body third gas distribution assembly are arranged in the corresponding valve cavities, corresponding output ports are formed in the bottoms of the valve cavities of the valve body second gas distribution assembly and the valve body third gas distribution assembly, the valve body inner cavity and the two valve cavities are mutually communicated, the electromagnetic valve gas distribution assembly comprises three electromagnetic valve groups with the same structure, the electromagnetic valve inner cavities for installing the electromagnetic valve groups are formed in the electromagnetic valve, the electromagnetic valve inner cavities are communicated with the gas storage cavities, and the electromagnetic valve groups control on-off between the corresponding electromagnetic valve inner cavities and the gas storage cavities.

4. The ECAS valve solenoid valve assembly of claim 3, wherein: the first valve body gas distribution assembly comprises a large piston, a large spring, a sealing gasket and a first spring, wherein the large piston is arranged on the upper portion of an inner cavity of the valve body, a mounting annular groove is formed in the cavity wall of the inner cavity of the valve body, the large spring is sleeved on the large piston, one end of the large spring stretches into the mounting annular groove, the first spring is arranged on the lower portion of the inner cavity of the valve body, the sealing gasket is arranged between the first spring and the large piston, and the first spring props against the sealing gasket to separate the upper portion and the lower portion of the inner cavity of the valve body.

5. The ECAS valve solenoid valve assembly of claim 3, wherein: the electromagnetic valve group comprises an electromagnetic valve coil, a static iron core, a movable iron core and a conical small spring, wherein the static iron core is arranged on the upper portion of an electromagnetic valve inner cavity, the movable iron core is arranged on the lower portion of the electromagnetic valve inner cavity, the conical small spring is sleeved on the bottom of the movable iron core, one end of the conical small spring is connected with the cavity wall on the lower portion of the electromagnetic valve inner cavity, and a communication port communicated with the air storage cavity is formed in the bottom of the electromagnetic valve inner cavity.

6. The ECAS valve solenoid valve assembly of claim 5, wherein: the top and the bottom of the movable iron core are respectively provided with a sealing gasket, the sealing gaskets at the top of the movable iron core are connected with the static iron core in a sealing way, and the sealing gaskets at the bottom of the movable iron core are connected with the cavity wall of the electromagnetic valve inner cavity at the edge of the communication port in a sealing way.

7. The ECAS valve solenoid valve assembly of claim 3, wherein: the valve body third air distribution assembly and the valve body second air distribution assembly are composed of small pistons, spring seats and supporting springs, the small pistons and the supporting springs are respectively arranged at the upper part and the lower part of corresponding valve cavities, sealing gaskets are arranged between the small pistons and the supporting springs, and the valve cavities are partitioned by the sealing gaskets.

8. The ECAS valve solenoid valve assembly of claim 5, wherein: an upper cover and a partition plate are arranged between the valve body and the electromagnetic valve, the upper cover is arranged at the top end of the partition plate, an electromagnetic valve set mounting groove is formed in the upper cover, the electromagnetic valve set mounting groove is communicated with an inner cavity of the electromagnetic valve, and a small conical spring is arranged in the electromagnetic valve set mounting groove.

9. The ECAS valve solenoid valve assembly of claim 8, wherein: the baffle sets up between upper cover and valve body, baffle top one side indent sets up, form the gas storage chamber between baffle indent part and the upper cover, set up the baffle through-hole of intercommunication gas storage chamber and valve body inner chamber on the baffle.