Electric control valve

Abstract

The utility model discloses an electric control valve, and relates to the field of electric control valves. The electric control valve comprises a shell, a signal cavity base, a circuit board assembly and a display device. The circuit board assembly is arranged in the shell, and the signal cavity base is located below the circuit board assembly and supports the circuit board assembly; a display groove is formed in the outer side face of the shell, the display device is fixed in the display groove, and the display device is electrically connected with the circuit board assembly through a cable; the problem that a display device of an existing electric control valve is prone to dislocation due to multiple positioning structures during installation is solved, and the effects that the installation mode of the display device is simplified, and the positioning precision and the installation convenience are improved are achieved.

Description

Technical Field

[0001] This application relates to the field of valves, and particularly to an electric control valve. Background Art

[0002] An electric control valve is a valve that uses an electric signal to control the flow of a fluid. It consists of an electric control unit and a mechanical valve, and can adjust the opening degree of the valve according to the input electric signal (such as voltage or current), thereby controlling the flow rate, pressure or flow direction of the fluid.

[0003] Currently, most of the electric control valves on the market support a human-machine interactive interface. The control output of the electric control valve can be achieved through external buttons, and the parameter values in the real-time state can also be directly observed and read through a display device.

[0004] During the production process of an electric control valve, the display device and the circuit board assembly need to be assembled into an integral assembly first, and then the integral assembly is installed into the housing by using a multi-positioning structure. However, the multi-positioning structure and the structural tolerances of the components may cause the display device to be misaligned and unable to align with the display device hole position on the housing. Summary of the Utility Model

[0005] The main purpose of this application is to provide an electric control valve, aiming to solve the problem that the display device is prone to misalignment during the assembly of the existing electric control valve.

[0006] To achieve the above purpose, an embodiment of this application provides an electric control valve, which includes a housing, a signal cavity base, a circuit board assembly, and a display device;

[0007] The circuit board assembly is arranged inside the housing, and the signal cavity base is located below the circuit board assembly and supports the circuit board assembly;

[0008] A display slot is arranged on the outer side surface of the housing, the display device is fixed in the display slot, and the display device is electrically connected to the circuit board assembly through a cable.

[0009] Optionally, the housing is further provided with a through hole adjacent to the display slot;

[0010] The cable passes through the through hole, one end of the cable is electrically connected to the display device, and the other end of the cable is electrically connected to the circuit board assembly inside the housing.

[0011] Optionally, the size of the through hole is larger than the thickness and width of the display device.

[0012] Optionally, a connector is provided on the circuit board assembly. The connector has a locking structure therein for locking the cable when the connector is electrically connected to the other end of the cable.

[0013] Optionally, a stepped structure is provided at the bottom of the display slot, and the display device is positioned within the display slot by means of the stepped structure.

[0014] Optionally, an adhesive layer is provided on the back surface of the display device, and the display device is adhered within the display slot by means of the adhesive layer.

[0015] Optionally, the electric control valve further includes a patch. An outer side surface of the housing is provided with a patch slot located outside the display slot, and the patch is adhered within the patch slot.

[0016] Optionally, a region of the patch corresponding to the display device is a transparent region.

[0017] Optionally, the housing is provided with a receptacle, and the circuit board assembly is provided with a pin inserted into the receptacle.

[0018] Optionally, the signal cavity base includes support columns and a bottom plate. The support columns are fixed to the bottom plate, and after the bottom plate is assembled with the housing, a signal cavity is formed. The support columns are located within the signal cavity and are used to support the circuit board assembly.

[0019] The electric control valve provided in the present application includes a housing, a signal cavity base, a circuit board assembly, and a display device. The circuit board assembly is disposed inside the housing, the signal cavity base is located below the circuit board assembly and supports the circuit board assembly. An outer side surface of the housing is provided with a display slot, and the display device is fixed within the display slot. The display device is electrically connected to the circuit board assembly by a cable. By improving the electrical connection method between the display device and the circuit board assembly using the cable, and by using the display slot to define the assembly position of the display device, the problem that the display device of the existing electric control valve is prone to misalignment due to multiple positioning structures during installation is solved, achieving the effects of simplifying the installation method of the display device, improving the positioning accuracy and installation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1Schematic diagram of the structure of an electric control valve provided by an embodiment of the present application;

[0022] Figure 2 When the display device extends out of the housing, Figure 1 Enlarged schematic diagram at position A in [diagram name].

[0023] Explanation of the reference numerals in the drawings:

[0024] Label Name Label Name 21 Outer shell 22 Circuit board assembly 222 Connector 24 Display device 241 Cable 213 Display slot 25 Signal cavity base 251 Bottom plate 252 Support pillar 214 Patch slot 23 Patch 221 Pin 212 Plug 216 Through hole 215 Step structure

[0025] The realization of the purpose of the present application, functional features and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the embodiments of the present application.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, the descriptions such as "first" and "second" in the embodiments of the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the embodiments of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the embodiments of the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0030] In addition, the technical solutions between various embodiments of the present application can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of the present application.

[0031] Inside the electric control valve is a closed-loop control system, mainly composed of a gas transmission structure signal acquisition part and a signal control part. The signal acquisition part and the signal control part are arranged in the signal cavity of the electric control valve. The signal acquisition and signal control can be realized by a circuit board assembly, a sensor, a pilot valve, etc. arranged in the signal cavity; the gas transmission structure is separated from the signal cavity.

[0032] In the electric control valve, the display device for human-computer interaction is generally placed in the signal cavity and arranged facing the side of the valve body, which is convenient for users to read parameters through the reserved display device hole position on the side of the valve body shell. At the same time, in order to control the volume of the electric control valve, in the signal cavity, the circuit board assembly and the pilot valve are generally placed in an up-and-down structure, that is, the circuit board assembly is arranged close to the top of the signal cavity, and the pilot valve is arranged below the circuit board assembly. The pilot valve includes an intake pilot valve and an exhaust pilot valve, and the two pilot valves are arranged side by side in the signal cavity.

[0033] During the production process of the electric control valve, first, the pins on the side of the display device and the circuit board assembly are positioned and welded to achieve electrical connection, and then assembled into an overall assembly through fixing structures such as buckles. Since the space in the signal cavity is small, the circuit board assembly also needs to be electrically connected to other signal interfaces and connectors of the electric control valve. In order to position accurately, it is also necessary to use a multi-positioning structure to install the overall assembly into the signal cavity of the electric control valve. However, the multi-positioning structure and the structural tolerances of components may cause the display device to be misaligned and unable to align with the reserved display device hole position on the outer shell, which will affect the human-computer interaction of the electric control valve and also cause the appearance of the electric control valve to be unbeautiful.

[0034] An embodiment of the present application provides an electric control valve, as Figure 1 shown. The electric control valve includes a housing 21, a signal cavity base 25, a circuit board assembly 22, and a display device 24.

[0035] A circuit for realizing the electrical control function of the electric control valve is provided on the circuit board assembly 22.

[0036] The circuit board assembly 22 is arranged inside the housing 21, and the signal cavity base 25 is located below the circuit board assembly 22 and supports the circuit board assembly 22. The signal cavity base 25 and the housing 21 enclose to form a signal cavity.

[0037] The outer side surface of the housing 21 is provided with a display slot 213, the display device 24 is fixed in the display slot 213, and the display device 24 is electrically connected to the circuit board assembly 22 through a cable 241.

[0038] In the electric control valve provided by the embodiment of the present application, by installing the display device in the display slot on the outer side surface of the housing and using a flexible cable to realize the electrical connection between the circuit board assembly and the display device, that is, realizing the separation of the circuit board assembly and the display device, the multiple positioning structures of the electric control valve can be reduced. Since the display slot is on the outer side surface of the housing, the offset of the cable during installation is larger, solving the problem that the display device is prone to misalignment during installation; achieving the effect of making the positioning of the display device more accurate, the installation operation of the electric control valve simpler and more convenient, and the appearance of the electric control valve more beautiful.

[0039] As Figure 1 shown, the housing 21 of the electric control valve is further provided with a through hole 216, the through hole 216 is adjacent to the display slot 213, and the cable 241 passes through the through hole 216.

[0040] The through hole 216 and the display slot 213 are adjacent to each other, which helps to shorten the length of the cable 241 and accommodate the cable 241.

[0041] One end of the cable 241 is electrically connected to the display device 24, and the other end of the cable 241 is electrically connected to the circuit board assembly 22 inside the housing 21.

[0042] After the circuit board assembly 22 is installed inside the housing 21, there are two ways to install the display device 24:

[0043] Method 1: Connect the circuit board assembly 22 and the display device 24 by using the cable 241. After the display device 24 is connected to the circuit board assembly 22, it passes through the through hole 216 on the housing 21 to the outside of the housing 21, and then the display device 24 is installed in the display slot 213.

[0044] Method 2: First connect the display device 24 and the cable 241, then pass the cable 241 through the through hole 216 and extend it into the inside of the housing 21, electrically connect the cable 241 and the circuit board assembly 22, and then install the display device 24 in the display slot 213.

[0045] When installing the display device 24 by using Method 1, the size of the through hole 216 is larger than the thickness and width of the display device 24, which is convenient for the display device 24 to extend from the inside of the housing 21 to the outside of the housing 21; as Figure 2 shown, the display device 24 passes through the through hole 216.

[0046] Optionally, the cross-section of the through-hole 216 is rectangular, the length dimension of the through-hole 216 is greater than the width of the display device, and the width dimension of the through-hole 216 is greater than the thickness of the display device, which is convenient for the installer to perform the installation operation.

[0047] In the embodiment of the present application, by improving the assembly and fixing methods of the display device, it is possible to avoid the risk that the interior of the housing 21 is narrow and deep, and the installer's hand cannot reach deep into the housing 21 to assemble the display device and the circuit board assembly together, achieving the effect of making the assembly more convenient and easy to operate.

[0048] In an optional embodiment based on the above embodiment, in order to prevent the cable between the display device and the circuit board assembly from falling off when the electric control valve works in a vibration environment, a connector 222 is further provided on the circuit board assembly 22, as Figure 1 shown; the connector 222 has a locking structure, and the locking structure is used to lock the cable when the connector is electrically connected to the other end of the cable.

[0049] When the connection end of the cable 241 is inserted into the connector 222 on the circuit board assembly 22, the locking structure in the connector 222 locks the connection end of the cable, preventing the connection end of the cable 241 from falling off the circuit board assembly 22, and improving the connection reliability between the display assembly 24 and the circuit board assembly 22.

[0050] In an optional embodiment based on the above embodiment, a stepped structure is provided at the bottom of the display slot, and the display device is positioned in the display slot through the stepped structure.

[0051] As Figure 1 shown, the display device 24 is installed in the display slot 213, and the display device 24 is positioned by the step surface of the stepped structure 215 of the display slot 213, which can prevent the display device from being misaligned when installing the display device 24, avoid an unsightly state, and can also prevent the display device 24 from falling off in a vibration environment, improving the stability of the layout structure of the display device 24.

[0052] In an optional embodiment based on the above embodiment, an adhesive layer is provided on the back surface of the display device, and the display device is adhered to the display slot through the adhesive layer.

[0053] In order to further improve the fixing reliability of the display device, an adhesive layer is provided on the back surface of the display device. After the display device is placed in the display slot, the display device can also be adhered to the display slot through the adhesive layer.

[0054] As Figure 1 shown, in an optional embodiment of the above embodiment, the electric control valve further includes a patch 23. A patch slot 214 is provided on the outer side surface of the housing 21, and the patch slot 214 is located outside the display slot 213, and the patch 23 is adhered to the patch slot 214. As Figure 1As shown, the opening of the patch slot 214 is larger than that of the display slot 213.

[0055] The patch 23 is used to be pasted on the surface of the display device 24. After the display device 24 is installed and fixed in the display slot 214, the patch 23 is pasted in the patch slot 214, and the pasting surface of the patch 24 is pasted on the surface of the display device 24.

[0056] Optionally, the area of the patch corresponding to the display device is a transparent area, and the parameter values displayed by the display device can be directly read from the transparent area of the patch.

[0057] As Figure 1 shown, in an alternative embodiment based on the above embodiment, the housing of the electro-control control valve is further provided with a socket 212, and the circuit board assembly 22 is provided with a pin 221. The positions of the pin and the socket 212 correspond and the models match. When the circuit board assembly 22 is installed in the cavity of the housing 21, the pin 221 on the circuit board assembly 22 is inserted into the socket 212.

[0058] The electrical connection between the circuit board assembly 22 and an external electrical device is realized by using the pin 221 and the socket 212. In addition, the pin 221 and the socket 212 can also play a positioning role when the circuit board assembly 22 is installed.

[0059] In an alternative embodiment based on the above embodiment, the signal cavity base 25 includes a support column 252 and a bottom plate 251. The support column 252 is fixed on the bottom plate 251. After the bottom plate 251 is assembled with the housing 21, a signal cavity is formed. The support column 252 is located in the signal cavity, and the support column 252 is used to support the circuit board assembly 22.

[0060] Optionally, as Figure 1 shown, the support column 252 is located below the circuit board assembly 22, and the support column 252 supports the circuit board assembly 22. The circuit board assembly 22 is limited and fixed by using the limiting structure in the housing 21 and the support column 252 on the signal cavity base 25.

[0061] Optionally, the bottom plate 251 of the signal cavity base 25 is further provided with a groove, and the groove matches the housing 21. After the side plate of the housing 21 is inserted into the groove, the housing 21 and the signal cavity base 25 are assembled into one body, and a signal cavity is formed between the housing 21 and the signal cavity base 25.

[0062] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the embodiments of the present invention under the inventive concept of the embodiments of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. An electric control valve, characterized in that, It includes a housing, a signal cavity base, a circuit board assembly, and a display device; The circuit board assembly is disposed inside the housing, and the signal cavity base is located below the circuit board assembly and supports the circuit board assembly; A display slot is provided on the outer side of the housing, the display device is fixed in the display slot, and the display device is electrically connected to the circuit board assembly through a cable.

2. The electric control valve according to claim 1, wherein The housing is further provided with a through hole, and the through hole is adjacent to the display slot; The cable passes through the through hole, one end of the cable is electrically connected to the display device, and the other end of the cable is electrically connected to the circuit board assembly inside the housing.

3. The electric control valve according to claim 2, wherein The size of the through hole is larger than the thickness and width of the display device.

4. The electric control valve according to claim 2, wherein A connector is provided on the circuit board assembly, and the connector has a locking structure for locking the cable when the connector is electrically connected to the other end of the cable.

5. The electric control valve according to claim 1, characterized in that, A step structure is provided at the bottom of the display slot, and the display device is limited in the display slot through the step structure.

6. The electric control valve according to claim 5, characterized in that, An adhesive layer is provided on the back surface of the display device, and the display device is adhered to the display slot through the adhesive layer.

7. The electric control valve according to claim 4, wherein The electric control valve further includes a patch, a patch slot is provided on the outer side of the housing, the patch slot is located outside the display slot, and the patch is pasted in the patch slot.

8. The electric control valve according to claim 7, wherein The area of the patch corresponding to the display device is a transparent area.

9. The electric control valve according to claim 1, characterized in that, The housing is provided with a socket, and the circuit board assembly is provided with a pin, and the pin is inserted into the socket.

10. The electric control valve according to claim 1, characterized in that, The signal cavity base includes a support column and a bottom plate, the support column is fixed on the bottom plate, and a signal cavity is formed after the bottom plate is assembled with the housing. The support column is located in the signal cavity, and the support column is used to support the circuit board assembly.

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