Integral solenoid pilot valve drive cartridge connector

Abstract

This utility model discloses an integrated electromagnetic pilot valve drive box connector, including a drive box, an internal circuit board with a controller, and evenly distributed connection holes on the rear side wall of the drive box. It also includes multi-ring groove light guides and a nameplate cover. The multi-ring groove light guides are located at the front and rear ends of the upper side wall of the drive box. Indicator lights are located at both ends of the upper side of the circuit board, with the upper ends of the indicator lights located inside the lower ends of the adjacent multi-ring groove light guides. The nameplate cover is located on the front side of the drive box. This integrated electromagnetic pilot valve drive box connector, through the integrated injection molding of the drive box and connector seat, and the injection molding of multi-ring groove light guides within the drive box, solves the problems of poor sealing, unstable contact, light diffusion, and water ingress associated with existing separate assembly methods, thereby improving reliability and reducing cost and maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic pilot valve technology, specifically to an integrated electromagnetic pilot valve drive box connector. Background Technology

[0002] In the field of industrial automation control, electromagnetic pilot valves are core components of fluid control systems, and the reliability and stability of their drive connection devices directly affect the overall system's operating efficiency. With the increasing complexity of industrial environments (such as high-humidity and high-dust environments like mines and chemical plants), higher demands are being placed on the electrical connection reliability, environmental adaptability, and ease of maintenance of electromagnetic pilot valve drive box connectors. Traditional drive box connectors need to meet diverse scenario requirements in multiple dimensions, including signal transmission, mechanical lifespan, and sealing performance. Therefore, optimizing their structural design to improve overall performance has become a key focus in the industry. In existing technologies, the electromagnetic pilot valve drive box and connector base are separate structures, assembled using screws or other methods. The connection point uses a single-plane contact, and the connector uses tuning fork contacts. The signal indicator light is fixed by applying glue inside the drive box hole. The working process involves assembling the separate drive box and connector base, inserting the plug into the connector base to make the tuning fork contacts make contact and conduct electricity, and sealing the signal indicator light with glue. However, the separate assembly is prone to gaps, the tuning fork contacts have a low mechanical life, and the glue can easily leave air bubbles and gaps, leading to water ingress, unstable contact, and indicator light failure during underground use. Existing technologies have several problems. The separate assembly of the drive box and connector base is difficult to assemble, and gaps are easily formed after assembly, which can easily lead to assembly and sealing problems. The tuning fork contact has a low mechanical life, and frequent plugging and unplugging is required in some situations, which can easily reduce contact stability. The signal indicator light on the circuit board is fixed by applying glue inside the hole, but air bubbles and gaps may appear during the glue application process, which can easily lead to water ingress and sealing failure during underground use. At the same time, light diffusion is also likely to occur. Therefore, we propose an integrated electromagnetic pilot valve drive box connector. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an integrated electromagnetic pilot valve drive box connector, in which the connector seat and the multi-ring groove light guide column are integrally formed with the drive box, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated electromagnetic pilot valve drive box connector, including a drive box, a circuit board inside the drive box, a controller on the circuit board, and evenly distributed connection holes on the rear side wall of the drive box, and also including a multi-ring groove light guide column and a nameplate cover plate. Multi-ring groove light guide column: It is set at the front and rear ends of the upper side wall of the drive box. The front and rear ends of the upper side of the circuit board are equipped with indicator lights. The upper ends of the indicator lights are located inside the lower ends of the adjacent multi-ring groove light guide columns on the upper side. Nameplate cover: It is located on the front side of the drive box. A positioning pin is inserted into the slot at the upper end of the front side of the drive box. The nameplate cover is installed in conjunction with the positioning pin. The system also includes a connector base. The upper side wall of the drive box is integrally formed with a connector base for connecting to an external plug. The upper side of the connector base is provided with a sealing step groove. The connector base is installed in conjunction with the controller. By integrally injection molding the drive box and the connector base, and injection molding a multi-ring groove light guide column inside the drive box, the problems of poor sealing, unstable contact, light diffusion and water ingress of the indicator light in the existing separate assembly are solved, thereby improving reliability and reducing cost and maintenance difficulty.

[0005] Furthermore, the connector socket includes a slot and pins disposed within the slot. The input end of the pins is connected to the output end of the controller. The external plug that plugs into the connector socket can be either a tuning fork type or a crown spring type, which can be selected according to the mechanical life required for the application. The crown spring uses multi-contact contact, which increases the contact area of ​​the connector and greatly improves the contact reliability of the product.

[0006] Furthermore, the connector housing has a threaded hole in the middle to facilitate the connection of an external connector plug.

[0007] Furthermore, the interior of the sealing step groove is provided with a rubber sealing ring for easy sealing.

[0008] Furthermore, a power amplifier is provided on the upper side of the circuit board, and the input terminal of the power amplifier is electrically connected to the output terminal of the controller to output a signal.

[0009] Furthermore, a current sensor is provided on the upper side of the circuit board. The current sensor is configured in conjunction with the power amplifier and the controller. The output terminal of the current sensor is electrically connected to the input terminal of the controller to detect the current.

[0010] Furthermore, a positioning hole is provided at the upper end of the nameplate cover, and the inner arc surface of the positioning hole is slidably connected to the outer arc surface of the positioning pin to facilitate positioning of the nameplate cover.

[0011] Furthermore, the front side of the drive box has evenly distributed bolt holes for connecting the nameplate cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This integrated electromagnetic pilot valve drive box connector has the following advantages: 1. The connector base and multi-ring groove light guide column are injection molded into a whole with the driver box, which saves some space, reduces the complex process of separate assembly, eliminates the original process of applying glue to the signal indicator light, and also reduces some time and cost. At the same time, it solves the problem of gaps easily generated after assembly, which can easily lead to assembly and sealing problems.

[0013] 2. The drive box and connector base are integrally molded without gaps. After the connector plug is inserted into the connector base, the sealing gasket of the plug presses on the rubber sealing ring of the sealing step groove. After the screw is screwed in, a tight seal is formed, which prevents water and moisture from entering when used in the mine, thus solving the problem of water entering at the connection.

[0014] 3. Add a multi-ring groove light guide column to the position of the signal indicator light. The light guide column is injection molded in the drive box to solve the problem of light diffusion of the signal indicator light, reduce the difficulty of product maintenance, and also solve the problem of sealing gap between the signal indicator light and the drive box to prevent water ingress and product failure.

[0015] 4. A hole is made in both the nameplate cover and the drive box. During assembly, a positioning pin is hammered in to position the cover in the correct direction, making it easier to install after laser marking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the structure of a crown spring connector in the prior art; Figure 4 This is a schematic diagram of the front side of the present invention; Figure 5 This is a partial structural schematic diagram of the multi-ring groove light guide column of this utility model.

[0017] In the diagram: 1. Driver box, 2. Connector socket, 3. Positioning hole, 4. Sealing step groove, 5. Rubber sealing ring, 6. Bolt hole, 7. Nameplate cover, 8. Connection hole, 9. Circuit board, 10. Controller, 11. Power amplifier, 12. Indicator light, 13. Current sensor, 14. Multi-ring groove light guide column, 15. Positioning pin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 This embodiment provides a technical solution: an integrated electromagnetic pilot valve drive box connector, including a drive box 1, a circuit board 9 inside the drive box 1, a controller 10 on the upper side of the circuit board 9, a power amplifier 11 on the upper side of the circuit board 9, the input end of the power amplifier 11 being electrically connected to the output end of the controller 10, a current sensor 13 on the upper side of the circuit board 9, the current sensor 13 being configured in conjunction with the power amplifier 11 and the controller 10 respectively (the current sensor 13 is connected in parallel between the input end of the power amplifier 11 and the output end of the controller 10), the output end of the current sensor 13 being electrically connected to the input end of the controller 10, and the rear side wall of the drive box 1 having uniformly distributed connection holes 8, and also including a multi-ring groove light guide post 14 and a nameplate cover plate 7; Multi-ring groove light guide column 14: It is set at the front and rear ends of the upper side wall of the drive box 1. The front and rear ends of the upper side of the circuit board 9 are equipped with indicator lights 12. The upper ends of the indicator lights 12 are located inside the lower end of the adjacent multi-ring groove light guide column 14 on the upper side. The multi-ring groove light guide post 14 is made of transparent material and is integrally injection molded inside the drive box 1. The multi-ring groove light guide post 14 is a hollow cylinder with several annular grooves spaced along its axial direction. The annular grooves are distributed in a ring around the axis of the main body of the cylinder, and the axis of the annular grooves is collinear with the axis of the main body of the cylinder. At least one waterproof sheet is provided inside the cylinder. The cylinder, annular grooves, and waterproof sheet are integrally molded into a single structure by injection molding. The multi-ring groove light guide post 14 is integrally molded on the drive box 1. Compared with the traditional method of sealing the circuit board signal indicator light with glue in the hole, the glue application process is eliminated, there is no possibility of gaps, and it avoids the possibility of air bubbles and gaps during the glue application process, which may cause water to enter during underground use and lead to sealing failure. It can also increase the focusing of light.

[0020] Nameplate cover 7: It is located on the front side of the drive box 1. A positioning pin 15 is inserted into the slot at the upper end of the front side of the drive box 1. The nameplate cover 7 is installed in conjunction with the positioning pin 15. A positioning hole 3 is provided at the upper end of the nameplate cover 7. The inner arc surface of the positioning hole 3 is slidably connected with the outer arc surface of the positioning pin 15. The front side of the drive box 1 has evenly distributed bolt holes 6. This includes a connector base 2, integrally formed in the middle of the upper side wall of the drive box 1. The connector base 2 includes a slot and pins inside the slot. Depending on the requirements, the connection method of the external connector plug can be selected, such as a crown spring type or a tuning fork type. The crown spring type contact point is the crown spring socket, which is typically composed of an outer sleeve and an internal crown spring assembly. The sleeve is generally cylindrical, serving to protect and support the internal components. The material is mostly metal or high-strength insulating plastic to ensure its mechanical strength and stability. The crown spring is the core part of the crown spring socket, composed of multiple beryllium bronze springs arranged in a ring, resembling a crown, hence the name "crown spring." The springs are connected by diagonal threads, forming an integral elastic structure. The tuning fork typically has an oblong hole along its axis, with slight differences in the inner and outer diameters at both ends, one end being larger and the other smaller. When the pin is inserted into the crown spring socket, the spring plate inside the crown spring structure holds the pin in place, achieving multi-point contact and thus forming a good electrical connection. Due to the large contact area between the crown spring and the pin, and the good elasticity of the spring plate, it can adapt to pin size deviations and vibrations within a certain range, ensuring the stability and reliability of the connection. The tuning fork contact point is the tuning fork socket, which contains a central metal inner pin for making contact with the fork-shaped contact spring of the tuning fork plug for electrical conduction. There are two metal spring plates on the inner wall; when the tuning fork plug is inserted, the spring plates can more firmly hold the metal inner pin in the socket, ensuring a secure connection. It has good electrical conductivity. The upper side of the connector seat 2 is provided with a sealing step groove 4, and the inside of the sealing step groove 4 is provided with a rubber sealing ring 5. The connector seat 2 is installed in conjunction with the controller 10. The middle of the connector seat 2 is provided with a threaded hole. First, select the connection method of the external connector. When connecting the external connector, after the connector plug end is inserted into the connector seat 2, the rubber sealing gasket of the plug end of the external connector presses against the sealing step groove 4 on the selected connector seat 2 and contacts the rubber sealing ring 5. After rotating and screwing the screw of the plug end of the external connector into the threaded hole provided inside the connector seat 2, a tight seal is formed. When used in the mine, it prevents water and water vapor from entering, thereby solving the problem of water ingress at the connection. The external control device is connected through the connected external connector. The contact points inside the connector 2 input signals to the controller 10. The controller 10 transmits the signals to the power amplifier 11 for amplification. The output from the contact points of the connector 2 is then sent to the electromagnetic pilot valve coil after connecting to the external connector, driving the valve to operate. During this process, the current sensor 13 monitors the current in real time and feeds it back to the controller 10 to ensure safety. When an abnormal current value is detected, it transmits the signal to the controller 10. The controller 10 controls the two indicator lights 12 to illuminate, and the multi-ring groove light guide column 14 at their upper ends increases the focus of the light. The nameplate cover 7 on the front side of the drive box 1 is slidably connected to the positioning pin 15 and positioning hole 3 for maintenance. Then, the bolts at the four corners of the nameplate cover 7 are tightened to securely connect to the bolt holes 6. The connection hole 8 on the rear side wall of the drive box 1 is used for connecting to external equipment.This solution resolves the existing issues of poor sealing, unstable contact, light diffusion, and water ingress in indicator light 12 related to the separate assembly.

[0021] The working principle of the integrated electromagnetic pilot valve drive box connector provided by this utility model is as follows: First, select the connection method of the external connector. When connecting the external connector, after the connector plug is inserted into the connector seat 2, the rubber sealing gasket of the external connector plug presses against the sealing step groove 4 on the selected connector seat 2 and contacts the rubber sealing ring 5. After rotating and screwing the screw of the external connector plug into the threaded hole inside the connector seat 2, a tight seal is formed. When used in the mine, it prevents water and water vapor from entering, thereby solving the problem of water ingress at the connection. The external control device inputs a signal to the controller 10 through the contact point inside the connector seat 2 via the connected external connector. The signal is transmitted to the power amplifier 11 and amplified. The contact point of the connector 2 outputs to the electromagnetic pilot valve coil after connecting to the external connector, driving the valve to move. During this period, the current sensor 13 monitors the current in real time and feeds it back to the controller 10 to ensure safety. When the current is detected to be abnormal, it is transmitted to the controller 10. The controller 10 controls the two indicator lights 12 to light up. The multi-ring groove light guide column 14 at the top of the indicator lights increases the focus of the light. The nameplate cover 7 on the front side of the drive box 1 is slidably connected to the positioning pin 15 and the positioning hole 3 for maintenance. Then, the bolts at the four corners of the nameplate cover 7 are tightened to connect it firmly to the bolt holes 6. The connection hole 8 on the rear side wall of the drive box 1 is used to connect to external equipment.

[0022] It is worth noting that the controller 10 disclosed in the above embodiments can use the STM32F103C8T6 control chip, the power amplifier 11 can use the OPA549, the indicator light 12 can use a conventional LED indicator light, the current sensor 13 can use a traditional current sensor, and the controller 10 controls the operation of the indicator light 12 using methods commonly used in the prior art.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An integrated electromagnetic pilot valve drive box connector, comprising a drive box (1), wherein a circuit board (9) is provided inside the drive box (1), a controller (10) is provided on the circuit board (9), and uniformly distributed connection holes (8) are provided on the rear side wall of the drive box (1), characterized in that: It also includes a multi-ring groove light guide column (14) and a nameplate cover plate (7); Multi-ring groove light guide column (14): It is set at the front and rear ends of the upper side wall of the drive box (1). The front and rear ends of the upper side of the circuit board (9) are provided with indicator lights (12). The upper ends of the indicator lights (12) are located inside the lower end of the adjacent multi-ring groove light guide column (14) on the upper side. Nameplate cover (7): It is located on the front side of the drive box (1). A positioning pin (15) is inserted into the slot at the upper end of the front side of the drive box (1). The nameplate cover (7) and the positioning pin (15) are installed together. Among them: it also includes a connector seat (2), and the upper side wall of the drive box (1) is integrally formed with a connector seat (2) for connecting with an external plug, and the upper side of the connector seat (2) is provided with a sealing step groove (4).

2. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The connector (2) includes a slot and pins disposed in the slot, with the input end of the pins connected to the output end of the controller.

3. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The connector seat (2) has a threaded hole in the middle.

4. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The sealing step groove (4) is provided with a rubber sealing ring (5).

5. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The circuit board (9) is provided with a power amplifier (11), the input end of the power amplifier (11) is electrically connected to the output end of the controller (10), the circuit board (9) is provided with a current sensor (13), the current sensor (13) is configured in conjunction with the power amplifier (11) and the controller (10) respectively, and the output end of the current sensor (13) is electrically connected to the input end of the controller (10).

6. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The nameplate cover plate (7) has a positioning hole (3) at its upper end, and the inner arc surface of the positioning hole (3) is slidably connected to the outer arc surface of the positioning pin (15).

7. The integral solenoid pilot valve drive cartridge connector of claim 1, wherein: The front side of the drive box (1) has evenly distributed bolt holes (6).

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