CN216045731U - Signal indication type two-way valve - Google Patents

Abstract

The utility model belongs to the technical field of automobile valves, and particularly relates to a signal indication type two-way valve. The bidirectional valve comprises a bidirectional valve body, wherein two input cavities are formed in the bidirectional valve body, and at least one input cavity is provided with a signal transmission assembly; the signal transmission assembly outputs a signal for the pressure change of the input cavity. In this scheme, at least one input chamber corresponds signal transmission assembly, and when the input chamber was ventilated, gas pressure can switch on signal transmission assembly for signal transmission assembly transmits corresponding signal of telecommunication to the control room, thereby makes user or researcher learn this input port fast and whether ventilate. The elastic component has certain elastic force, and when the gas pressure of input chamber was greater than elastic component's elastic force, elastic component's elastic force can be overcome to atmospheric pressure, and then promoted elastic component touch micro-gap switch, made micro-gap switch closure and switch on plug subassembly, and plug subassembly output communication signal gives the control room, and convenient to use person or researcher learn the gas pressure state of input port or input chamber in real time.

Description

Signal indication type two-way valve

Technical Field

The utility model belongs to the technical field of automobile valves, and particularly relates to a signal indication type two-way valve.

Background

With the continuous development of social economy, automobiles are more and more widely applied to daily travel of people, and the signal indication type two-way valve is an important control component of an automobile pneumatic system, has the functions of stopping, adjusting, guiding and the like, and plays a vital role in the stability of automobile operation.

Patent application No. CN201020614803.3 discloses a novel signal indication type two-way valve, in which: the signal indication type two-way valve mainly comprises a two-way valve body, a valve cover, a rubber slide block and mounting screws. The signal indication type two-way valve receives pressure air signals transmitted from two ends, and the gas on the side with higher pressure is output through an outlet of the two-way valve body by the left-right movement of the middle rubber slide block. The method is suitable for the condition that the output pressure is determined by the air pressure signals at two ends. However, the pressure state of the input port in the prior art cannot be synchronously transmitted to the control chamber, which is not beneficial to the user or the developer to know and control the internal air pressure of the signal indication type two-way valve.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a signal indication type two-way valve capable of outputting the air pressure input condition information in the two-way valve.

The utility model is realized by the following technical scheme:

a signal indication type two-way valve comprises a two-way valve body, wherein the two-way valve body forms two input cavities, and at least one input cavity is provided with a signal transmission assembly; the signal transmission assembly outputs a signal for the pressure change of the input cavity.

Furthermore, the signal transmission assembly comprises a base body, an elastic assembly and a signal transmission assembly; the seat body is fixedly connected with the two-way valve body, a mounting cavity is arranged on the seat body or on the two-way valve body or between the seat body and the two-way valve body, one end of the mounting cavity is communicated with the input cavity, and the other end of the mounting cavity is communicated with the accommodating cavity of the seat body; the signal transmission component part is matched with the accommodating cavity and fixed on the seat body; the elastic assembly is arranged in the installation cavity, and the pressure change in the input cavity pushes the elastic assembly to move to trigger the signal transmission assembly so that the signal transmission assembly outputs signals.

Furthermore, the elastic assembly comprises an ejector rod and a compression spring, the ejector rod comprises a thin shaft and a thick shaft which are connected with each other, the compression spring is sleeved on the thin shaft, one end of the compression spring is abutted against the thick shaft, and the other end of the compression spring is abutted against the inner wall of one side of the installation cavity; the thick shaft is arranged close to the input cavity and is in sliding seal with the mounting cavity; the air pressure of the input cavity pushes the thick shaft to extrude the compression spring, so that the thin shaft is pushed to extend out of the mounting cavity and trigger the signal transmission assembly, and the signal transmission assembly outputs signals.

Furthermore, the signal transmission assembly comprises a microswitch and a plug assembly electrically connected with the microswitch, the microswitch is arranged in the accommodating cavity, and the plug assembly is arranged at the opening part of the accommodating cavity; the fine shaft is pushed by the pressure of the input cavity to extrude the micro switch, and the micro switch enables the plug assembly to be conducted and output signals.

Furthermore, the microswitch is a normally open microswitch, the thin shaft is pushed by the pressure of the input cavity to extrude a shifting sheet of the microswitch, and the shifting sheet is pressed down to enable the plug assembly to be electrically conducted and output signals.

Further, set up the installation cavity between pedestal and two-way valve body, the one end and the holding chamber intercommunication of installation cavity, the other end and input chamber intercommunication.

Further, the signal indicating type bi-directional valve includes component signal transmission assemblies, one for each input chamber.

Furthermore, a channel cavity is formed in the two-way valve body, and two ends of the channel cavity are respectively communicated with the first input port and the second input port through the input cavity; the channel cavity is communicated with the output port through the output cavity; the channel cavity is internally provided with a rubber slide block, and the rubber slide block is in sliding seal with the inner wall of the channel cavity.

Furthermore, an auxiliary cavity which is crossed with at least one input cavity at an angle is formed on the two-way valve body; the auxiliary cavity is matched with the cavity in a sealing way; the plug is provided with a channel through which the input cavity, the channel cavity and the accommodating cavity are communicated with each other.

Furthermore, the preset value of the compression elasticity of the compression spring corresponds to the pressure value of the gas in the input cavity and is 2 kPa-15 kPa.

Compared with the prior art, the utility model has the advantages that:

1. in the scheme, at least one input cavity is provided with the signal transmission assembly, and when the input cavity is ventilated, the gas pressure can be communicated with the signal transmission assembly, so that the signal transmission assembly transmits a corresponding electric signal to the control room, and a user or a developer can quickly know the ventilation condition of the input port.

2. Through the holding chamber that sets up to be provided with elastic component at the holding intracavity, the holding chamber communicates with the input chamber, makes the pressure in input chamber can promote elastic component trigger signal transmission subassembly output signal.

3. The elastic assembly comprises a mandril and a compression spring, and the pressure of the input cavity pushes the mandril to extrude the compression spring to enter the containing cavity, so that the mandril triggers the signal transmission assembly to output a signal; through setting up different specifications, the compression spring of different compression elasticity, can judge the pressure condition of input chamber according to output signal.

4. The signal transmission assembly comprises a microswitch and a plug assembly, the microswitch can feed back weak signals, and the accuracy and precision of signal feedback are improved; in addition, the plug assembly can be conveniently connected, the defect that all parts need to be replaced when a circuit is damaged is overcome, and only the circuit needs to be replaced.

5. Through the arrangement of the auxiliary cavity and the plug, simple and convenient operation can be realized, and the processing damage to the body is reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of a signal indicating type two-way valve according to the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is an enlarged schematic view of the structure in region I of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a schematic cross-sectional view of FIG. 1 in another operating condition.

The signal indication type bidirectional valve 20, the signal transmission component 17, the second input port a1, the first input cavity a, the plug component 1, the first rubber sealing surface 11a, the installation cavity 101, the output port a2, the second input cavity B, the gasket 2, the second rubber sealing surface 12a, the first input port A3, the output cavity C, the electric wire 3, the channel cavity D, the microswitch 5, the dial plate 501, the seat body 6, the accommodation cavity 602, the ejector rod 7, the thin shaft 701, the thick shaft 702, the compression spring 8, the bidirectional valve body 10, the second sealing ring 11, the rubber slider 12, the third sealing ring 13, the plug 14, the fourth sealing ring 15, the elastic component 16, the first sealing ring 9, the gas transmission component 30, the signal transmission component 40, the wall 41, the cylindrical groove 42, the first transmission component 401, the second transmission component 402, the first cylindrical groove 421, the second cylindrical groove 422, the cross channel 141, and the auxiliary cavity 43.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1, a signal indicating type two-way valve according to a preferred embodiment of the present invention comprises a two-way valve body 10, the two-way valve body 10 defining two input chambers A, B, at least one of the input chambers being provided with a signal transmission member 40, in this embodiment, one signal transmission member 40 is provided for each input chamber; the signal transmission assembly 40 outputs a signal for a pressure change of the input chamber.

Specifically, the signal transmission assembly 40 includes a base 6, an elastic assembly 16 and a signal transmission assembly 17; the seat body 6 is fixedly connected with the two-way valve body 10, preferably, the connection mode is screw or bolt fixation; in the present embodiment, the installation cavity 101 is disposed between the seat body 6 and the two-way valve body 10, one end of the installation cavity 101 is communicated with the input cavity, and the other end of the installation cavity 101 is communicated with the accommodating cavity 602 of the seat body 6, in which the installation cavity 101 is disposed between the seat body 6 and the two-way valve body 10, the structure of the installation cavity is not particularly limited, and the preferred section is circular, specifically, as shown in fig. 1, the installation cavity is divided into two sections, which are respectively located on the seat body 6 and the two-way valve body 10, and the diameter of the section of the installation cavity 101 on the two-way valve body 10 is greater than the diameter of the section of the installation cavity 101 on the seat body 6; further, a positioning structure, such as a positioning strip, a positioning ring and the like, is formed at the opening of the mounting cavity 101 on the seat body 6, specifically, a positioning ring is formed, and during mounting, the positioning ring is inserted into the mounting cavity 101 on the two-way valve body 10; the elastic component 16 is arranged in the installation cavity 101, the structure of the elastic component 16 can be specifically arranged according to the structure of the installation cavity 101, in this embodiment, in cooperation with the specific structure of the installation cavity 101, referring to fig. 1 and 3, the elastic component 16 includes a push rod 7 and a compression spring 8, the push rod 7 includes a thin shaft 701 and a thick shaft 702 which are connected with each other, the compression spring 8 is sleeved on the thin shaft 701, one end of the compression spring 8 is abutted against the thick shaft 702, and the other end is abutted against the inner wall of one side of the installation cavity 101; the thick shaft 702 is arranged close to the input cavity and is in sliding seal with the installation cavity 101, specifically, a first sealing ring 9 is arranged between the outer ring of the thick shaft 702 and the inner wall of the installation cavity 101, and at this time, a positioning structure formed at the mouth of the installation cavity 101 on the seat body 6 can be used as a sliding end point or a limiting position of the thick shaft 702; the change of the gas pressure in the input cavity can push the elastic component 16 to move, and further trigger the signal transmission component 17, so that the signal transmission component 17 outputs a signal, specifically, the gas pressure in the input cavity can overcome the elastic force of the compression spring 8 to push the thick shaft 702, so that the thin shaft 701 extends out of the installation cavity 101 and triggers the signal transmission component 17, and the signal transmission component 17 outputs a signal. The base body 6 is further provided with an accommodating cavity 602, a part of the signal transmission assembly 17 is matched with the accommodating cavity 602 and fixed on the base body 6, and the selection of the signal transmission assembly 17 can be selected according to the specific structure of the elastic assembly 16 of the trigger unit, in this embodiment, referring to fig. 1 and 4, the signal transmission assembly 17 comprises a microswitch 5 and a plug assembly 1 electrically connected with the microswitch 5, the microswitch 5 is arranged in the accommodating cavity 602, and specifically, the microswitch 5 is fixed on the cavity side wall of the accommodating cavity 602 through a screw or a bolt; the plug assembly 1 is arranged and fixed at the mouth of the accommodating cavity 602, specifically, the plug assembly 1 is fixedly connected with the mouth of the accommodating cavity 602 through a screw or a bolt, and a sealing gasket 2 is arranged between the plug assembly 1 and the base body 6 for sealing the joint of the plug assembly 1 and the base 6; the microswitch 5 and the plug assembly 1 are electrically connected by the pair of wires 3, the thin shaft 701 is pushed by the pressure of the input cavity to press the poking sheet 501 of the microswitch 5, and the poking sheet 501 is pressed down to enable the plug assembly 1 to be conducted and output signals. Preferably, the microswitch 5 is a normally open microswitch, when the microswitch 5 is not extruded, the circuit where the plug assembly 1 is located is disconnected, the plug assembly 1 is not switched on, when the microswitch 5 is extruded, the circuit where the plug assembly 1 is located is closed by the microswitch 5, and the plug assembly 1 is switched on and can transmit signals outwards.

In this embodiment, the plug assembly is an insulating part embedded with a metal part, the metal part is electrically connected with the microswitch, the insulating material is made of nylon, plastic, rubber or other materials, the specific structure is not particularly limited, and the existing male or female structure can be adopted; the microswitch may be a specific existing product, such as the product model SM1-10H-501A0-Z from the zippy manufacturer.

Specifically, two input cavities on the two-way valve body 10 are a first input cavity a and a second input cavity B respectively, an output cavity C is further arranged on the two-way valve body 10, the first input cavity a, the second input cavity B and the output cavity C are arranged in parallel relatively, the output cavity C is arranged between the first input cavity a and the second input cavity B and communicated with the first input cavity a and the second input cavity B, the first input cavity a and the second input cavity B are used for air flow input, and the output cavity C is used for air flow output.

Referring to fig. 1 and 2, a channel cavity D is further disposed on the two-way valve body 10, and the channel cavity D is perpendicular to the first input cavity a, the second input cavity B and the output cavity C and is simultaneously communicated with the first input cavity a, the second input cavity B and the output cavity C; two ends of the channel cavity D are respectively communicated with the first input port A3 and the second input port A1 through the input cavities A and B; the channel cavity D is communicated with the output port A2 through the output cavity C; meanwhile, the mouths of the first input port A3, the second input port a1 and the output port a2 are all provided with second sealing rings 11 to ensure the air tightness of the first input port A3, the second input port a1 and the output port a2 with the external air pipe. Preferably, the first input cavity A, the second input cavity B and the output cavity C are all cylindrical cavities with smooth inner walls; the channel cavity D is of a smooth approximately cylindrical cavity structure. The first input port A3 and the second input port A1 are used for connecting an air source air cylinder and are used as input gas interfaces, and the output port A2 is used for connecting external pipelines and is used as an output gas interface.

Further, a rubber sliding block 12 is arranged in the channel cavity D, and the rubber sliding block 12 is in sliding seal with the inner wall of the channel cavity D. Preferably, the rubber sliding block 12 is in an approximately cylindrical structure, and the shape of the rubber sliding block 12 is matched with the cavity structure of the channel cavity D; preferably, the rubber sliding block 12 is made of vulcanized rubber, such as high-hardness wear-resistant rubber, and by using such a material, the rubber sliding block 12 is more wear-resistant and aging-resistant, which is beneficial to prolonging the service life of the rubber sliding block 12. Of course, the rubber slide 12 can be of a conventional structure known in the art for performing the function. Further, the outer surfaces of the upper side and the lower side of the rubber sliding block 12 are respectively provided with a rubber sealing surface (11a and 12a) for contact sealing, the rubber sliding block 12 can slide up and down along the inner wall of the channel cavity D, when the rubber sliding block 12 moves to the top dead center, namely, contacts with the inner wall of one end of the channel cavity D close to the first input cavity a, or when the rubber sliding block 12 moves to the bottom dead center, namely, contacts with the plug 14, the rubber sealing surfaces (11a and 12a) enable the rubber sliding block 12 to be in soft contact with the structure, so that the purposes of effectively protecting the rubber sliding block 12 and prolonging the service life of the rubber sliding block are achieved.

The two-way valve body 10 is also formed with an auxiliary cavity 43 which intersects at an angle with at least one input cavity, the auxiliary cavity 43 is communicated with the input cavity, and meanwhile, the auxiliary cavity 43 can also communicate the channel cavity D with the outside atmosphere; the auxiliary cavity 43 is arranged, so that the signal indication type two-way valve is convenient to process a channel cavity D in the mechanical production process, the processing difficulty is reduced, and the processing cost is saved. Preferably, 1 auxiliary chamber 43 is formed on the two-way valve body 10, the auxiliary chamber 43 is disposed near one end of the second input chamber B, and the auxiliary chamber 43 is disposed perpendicular to the second input chamber B.

Further, the gas leakage prevention device further comprises a plug 14, the plug 14 is in sealing fit with the auxiliary cavity 43, the plug 14 is fixedly connected with the inner wall of the channel cavity D through threads, specifically, a third sealing ring 13 and a fourth sealing ring 15 are arranged between the plug 14 and the channel cavity D, the gas tightness between the plug 14 and the auxiliary cavity 43 is increased, and gas leakage in the channel cavity D is prevented, preferably, the plug 14 can be of a screw cap structure, inner threads matched with the outer threads of the screw cap are processed on the inner wall of the auxiliary cavity 43, and the screw cap is in threaded connection with the inner wall of the auxiliary cavity 43; a channel 141 is formed in the plug 14, and the input chamber, the channel chamber D and the receiving chamber 602 are communicated with each other through the channel 141. Preferably, the channel 141 in the plug 14 is a "T" shaped channel. The arrangement of the plug 14 prevents the rubber sliding block 12 from falling out of the opening of the channel cavity D due to the extrusion of gas pressure, and increases the operation reliability of the signal indication type two-way valve 20.

Preferably, the first seal ring 9, the second seal ring 11, the third seal ring 13 and the fourth seal ring 15 are all O-rings.

It should be noted that the compression spring 8 can be specifically selected according to the requirement, the design elastic force of the compression spring 8 is extremely small, and optionally, the preset value of the compression elastic force of the compression spring 8 corresponds to the pressure value of the gas in the input cavity, and is 2 kPa-15 kPa; in this embodiment, the preset value of the compression elasticity of the compression spring 8 corresponds to the value of the gas pressure of the input cavity of 10kPa, that is, as long as the gas pressure of the input cavity is greater than 10kPa, the gas pressure can push the valve rod 7 to overcome the elasticity of the compression spring 8 to extrude the microswitch 5, so as to switch on the plug assembly 1, the plug assembly 1 outputs a signal to the control room, a user or a developer can obtain the gas pressure state of a pair of input ports in real time, and the pressure state is whether the input cavity has input gas greater than the elastic force of the elastic assembly.

The use comprises the following working conditions:

the working condition I is as follows: when the first input port A3 is filled with air, and the second input port A1 is not filled with air, the air flow is introduced into the first input chamber A, the rubber slide block 12 moves downwards under the action of the air pressure of the first input chamber A until the rubber sealing surface 12a of the rubber slide block 12 and the upper surface of the plug 14 are pressed and sealed, and at the moment, the air in the first input chamber A can reach the output chamber C through the channel chamber D and is output from the output port A2. Meanwhile, the gas in the first input cavity a can also reach the installation cavity 101 corresponding to the first input cavity a, when the gas pressure is large enough, the gas pressure can push the valve rod 7 to overcome the elastic force of the compression spring 8 and extrude the plectrum 501 of the microswitch 5, so that the plug assembly 1 corresponding to the first input cavity a is switched on, the plug assembly 1 thereby transmits a signal to the control room, a user or a research and development person can know that the first input cavity a is ventilated at the moment, and the gas pressure is higher than the preset elastic force of the compression spring 8.

Working conditions are as follows: with further reference to fig. 5, when the second input port a1 is filled with air and the first input port A3 is not filled with air, the air flows into the second input chamber B, the rubber slide 12 moves upward under the air pressure of the air in the second input chamber B until the rubber sealing surface 11a of the rubber slide 12 contacts and seals with the inner wall of the channel chamber D at the end close to the first input chamber a, and at this time, the air in the second input chamber B passes through the channel chamber D to reach the output chamber C and is output from the output port a 2. Meanwhile, the gas in the second input cavity B can also reach the installation cavity 101 corresponding to the second input cavity B, the gas pressure can push the valve rod 7 to overcome the elastic force of the compression spring 8 and extrude the poking sheet 501 of the microswitch 5, so that the plug assembly 1 corresponding to the second input cavity B is switched on, the plug assembly 1 can transmit a signal to the control room, a user or a research and development person can know that the second input cavity B is ventilated at the moment, and the gas pressure is higher than the preset elastic force of the compression spring 8.

Working conditions are as follows: the second input port A1 and the first input port A3 are simultaneously fed, when the air pressure of the second input cavity B is larger than that of the first input cavity A, the air pressure of the second input cavity B pushes the rubber slide block 12 to the side of the first input port A3, and meanwhile, the air of the second input cavity B reaches the output cavity C through the channel cavity D and is output from the output port A2; when the air pressure of the first input cavity A is larger than that of the second input cavity B, the air pressure of the first input cavity A pushes the rubber slide block 12 to the second input cavity A1, and the air of the first input cavity A reaches the output cavity C through the channel cavity D and is output from the output port A2; meanwhile, because of the first input cavity A and the second input cavity B all have atmospheric pressure all the time, so 2 input cavities all can promote its corresponding valve rod 7 to overcome compression spring 8's elasticity, make valve rod 7 move towards the direction of holding chamber 602, thin axle 701 extrudes micro-gap switch 5's plectrum 501, make plug subassembly 1 electrically conductive switch-on and output signal, user or researcher can know this moment that first input cavity A chamber and second input cavity B all ventilate, and its atmospheric pressure all is higher than compression spring 8's the elasticity of predetermineeing.

Working conditions are as follows: the second input port A1 and the first input port A3 do not intake air, or the air pressure of the air intake is very small, the air pressure is not enough to push the ejector rod 7 to overcome the elastic force of the compression spring 8 so as to move, the signal transmission assembly 17 corresponding to the first input cavity A and the second input cavity B cannot be triggered, at the moment, the signal indication type two-way valve has no signal output, and a user or a developer can know that the air pressure in the first input cavity A and the second input cavity B does not reach a preset value at the moment.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A two-way valve of the signal indicating type comprising a two-way valve body (10), the two-way valve body (10) defining two input chambers (A, B), characterized in that at least one input chamber is provided with a signal transmission assembly (40); the signal transmission assembly (40) outputs a signal for a pressure change of the input chamber.

2. The signal indicating two-way valve according to claim 1, wherein the signal transmission member (40) comprises a seat body (6), an elastic member (16) and a signal transmission member (17); the seat body (6) is fixedly connected with the two-way valve body (10), a mounting cavity (101) is arranged on the seat body (6) or on the two-way valve body (10) or between the seat body (6) and the two-way valve body (10), one end of the mounting cavity (101) is communicated with the input cavity, and the other end of the mounting cavity is communicated with an accommodating cavity (602) of the seat body (6); the signal transmission component (17) is partially matched with the accommodating cavity (602) and is fixed on the base body (6); the elastic component (16) is arranged in the installation cavity (101), and pressure change in the input cavity can push the elastic component (16) to move to trigger the signal transmission component (17) so that the signal transmission component (17) outputs signals.

3. The signal indication type two-way valve according to claim 2, wherein the elastic component (16) comprises a push rod (7) and a compression spring (8), the push rod (7) comprises a thin shaft (701) and a thick shaft (702) which are connected with each other, the compression spring (8) is sleeved on the thin shaft (701), one end of the compression spring (8) is abutted with the thick shaft (702), and the other end of the compression spring is abutted with the inner wall of one side of the installation cavity (101); the thick shaft (702) is arranged close to the input cavity and is in sliding seal with the installation cavity (101); the air pressure of the input cavity pushes the thick shaft (702) to press the compression spring (8), so that the thin shaft (701) is pushed to extend out of the mounting cavity (101) and the signal transmission assembly (17) is triggered, and the signal transmission assembly (17) outputs a signal.

4. The signal indication type two-way valve according to claim 3, wherein the signal transmission assembly (17) comprises a microswitch (5) and a plug assembly (1) electrically connected with the microswitch (5), the microswitch (5) is arranged in the accommodating cavity (602), and the plug assembly (1) is arranged at the mouth of the accommodating cavity (602); the fine shaft (701) is pushed by the pressure of the input cavity to extrude the micro switch (5), and the micro switch (5) enables the plug assembly (1) to be conducted and output signals.

5. The signal indication type two-way valve according to claim 4, wherein the microswitch (5) is a normally open microswitch, the thin shaft (701) is pushed by the pressure of the input cavity to press the poke sheet (501) of the microswitch (5), and the poke sheet (501) is pressed down to make the plug assembly (1) conduct and output a signal.

6. A signal indicating type two-way valve according to claim 5, wherein a mounting chamber (101) is provided between the seat body (6) and the two-way valve body (10), one end of the mounting chamber (101) communicating with the housing chamber (602) and the other end communicating with the input chamber.

7. The signal indicating two-way valve according to claim 6, wherein the signal indicating two-way valve comprises 2 component signal transmission assemblies (40), one signal transmission assembly (40) for each input chamber.

8. A signalling type two-way valve according to any of claims 1-7, characterized in that the two-way valve body (10) is further formed with a channel chamber (D) having both ends communicating with the first inlet port (A3) and the second inlet port (A1) through the inlet chambers (A, B), respectively; the channel cavity (D) is communicated with the output port (A2) through the output cavity (C); a rubber sliding block (12) is arranged in the channel cavity (D), and the rubber sliding block (12) is in sliding seal with the inner wall of the channel cavity (D).

9. The signal indicating two-way valve according to claim 8, wherein the two-way valve body (10) is formed with an auxiliary chamber (43) that intersects the at least one input chamber at an angle; the auxiliary cavity (43) is matched with the plug (14) in a sealing mode; the plug (14) is provided with a channel (141), and the input cavity, the channel cavity (D) and the containing cavity (602) are communicated with each other through the channel (141).

10. A signal-indicating two-way valve according to claim 9, characterised in that the preset value of the compression spring force of the compression spring (8) corresponds to a value of the input chamber gas pressure of 2 kPa-15 kPa.

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