A coil for a solenoid valve

Abstract

The utility model discloses a solenoid for electromagnetic valve, including support body and the skeleton of setting in support body inside, the support body includes U type frame and sets up the apron of U type frame open end, still include the electricity incoming subassembly of clamping in one side of U type frame, the electricity incoming subassembly includes circuit board and mounting bracket. The utility model adopts modularization design, and the circuit board and mounting bracket are integrated into electricity incoming subassembly, make from production to operation and maintenance whole process realized optimization: first, the assembly link is simplified operating procedure because of part integration, reduces the cumbersome process of scattered assembly, thereby greatly improves the assembly efficiency, second, when the later maintenance replacement, modularization design makes no need to the coil overall to be disassembled, only needs to carry out single operation to the electricity incoming subassembly, not only simplifies the maintenance process, reduces the maintenance threshold, can also complete the replacement fast, effectively reduces the downtime of equipment because of the failure.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to a coil for electromagnetic valves. Background Technology

[0002] A solenoid valve consists of a solenoid coil, a stationary iron core, a compression spring, a movable iron core, and a valve body. Its working principle is as follows: when the solenoid coil is not energized, the sealing head on the movable iron core closes the valve under the action of the compression spring. When the solenoid coil is energized, the electromagnetic force overcomes the reaction force of the compression spring and the back pressure of the medium at the valve inlet, causing the movable iron core to move towards the stationary iron core until the two planes are attracted together, at which point the valve is in the open state. Solenoid valves are simple in structure and easy to control; they are used in machinery manufacturing, electronics, knitting, medical, and semiconductor fields, and are particularly suitable for pneumatic reversing control. The quality of the solenoid coil, as a crucial component of the solenoid valve, directly affects the service life of the entire valve. The core of an electromagnetic coil consists of two main parts: the frame and the coil. The frame is usually made of high-temperature resistant insulating material (such as nylon, phenolic resin, etc.) and has a cylindrical or frame structure. It provides a winding base for the coil and isolates the electrical connection between the coil and the iron core to avoid the risk of short circuit. The coil is the core element that generates magnetic force. It is usually made of copper wire with high conductivity, coated with insulating varnish, and wound tightly and orderly on the frame to form a multi-layer winding.

[0003] For example, a Chinese utility model patent (authorization announcement number: CN207500587U) discloses an energy-saving coil for an electromagnetic valve, comprising a bracket, a frame, a built-in energy-saving chip circuit board, and a fixing panel. The bracket has a U-shaped frame structure, and a circular hole is provided on the horizontal plate at the top of the bracket. A magnetic ring adapted to the circular hole is provided at the top of the frame, and the frame is secured inside the bracket through the magnetic ring passing through the circular hole. A positive terminal plug and a negative terminal plug are provided at the front end of the top of the frame, and a grounding terminal plug is provided at the front end of the bottom of the frame. Through the combined use of the frame and the built-in energy-saving chip circuit board, the power consumption of the electromagnetic valve coil during use is significantly reduced, reducing energy waste, lowering heat generation and temperature rise during use, and improving service life.

[0004] However, the energy-saving coil for solenoid valves disclosed in the above-mentioned prior art has the following two drawbacks due to its direct integration of the energy-saving chip circuit board and the frame: First, the integrated structure makes it impossible to achieve modular division of labor in the assembly process. Each assembly station needs to complete the entire connection process between the circuit board and the frame, which greatly reduces the flow efficiency of the production line and increases the time and labor costs during mass production. Second, when the energy-saving chip circuit board malfunctions and needs to be repaired or replaced, it cannot be directly disassembled separately because it is tightly integrated with the frame. Maintenance personnel must first disassemble the external protective structure of the coil and then separate the connecting parts between the circuit board and the frame. The complicated disassembly and reassembly process will prolong the downtime of the equipment, which may cause significant production losses for production lines that rely on the normal operation of solenoid valves.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a coil for a solenoid valve. Through modular design, the circuit board and mounting bracket are integrated into a power input component, which greatly improves assembly efficiency, saves production costs, facilitates later maintenance and replacement, and reduces equipment downtime.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A coil for a solenoid valve includes a support body and a frame disposed inside the support body. The support body includes a U-shaped frame and a cover plate disposed at the open end of the U-shaped frame. A positive terminal plug and a negative terminal plug are disposed on the top of the frame. The support body also includes a power supply component that is snapped onto one side of the U-shaped frame. The power supply component includes a circuit board and a mounting bracket. A positive terminal pin, a negative terminal pin, and a grounding pin are fixedly disposed on the mounting bracket. The grounding pin is electrically connected to the U-shaped frame. The positive terminal plug, the negative terminal plug, the positive terminal pin, and the negative terminal pin are respectively electrically connected to the circuit board.

[0008] Furthermore, the mounting bracket is provided with a fixed panel, and the positive terminal, negative terminal and grounding terminal are all provided on the fixed panel.

[0009] Furthermore, the fixed panel has a mounting foot on the side near the circuit board, and the U-shaped frame has a mounting groove that engages with the mounting foot.

[0010] Furthermore, the mounting foot is provided with a radially extending abutment portion, which abuts against the U-shaped frame.

[0011] Furthermore, the mounting feet are provided in two places, located on both sides of the fixing panel.

[0012] Furthermore, the U-shaped frame has a protrusion at its open end, and the cover plate has a slot that matches the protrusion. The cover plate is fixedly connected to the U-shaped frame through the cooperation of the protrusion and the slot.

[0013] Furthermore, the cover plate has a circular hole, and the top of the frame is provided with a magnetic ring that matches the circular hole. The magnetic ring passes through the circular hole and is inserted into the top of the frame.

[0014] Furthermore, the bracket body and the power supply component are externally fixed with a housing, which is integrally injection molded by a mold, and the fixing panel is located on one side of the housing surface.

[0015] Furthermore, the circuit board integrates an energy-saving chip.

[0016] The beneficial effects of this utility model after adopting the above structure are as follows: (1) The solenoid valve coil of this utility model includes a bracket body and a frame disposed inside the bracket body. The bracket body includes a U-shaped frame and a cover plate disposed at the open end of the U-shaped frame, and also includes a power supply component clamped to one side of the U-shaped frame. The power supply component includes a circuit board and a mounting bracket. This utility model adopts a modular design, integrating the circuit board and mounting bracket into a power supply component, thereby optimizing the entire process from production to operation and maintenance: First, the assembly process is simplified due to the integration of parts, reducing the cumbersome process of scattered assembly, thus greatly improving assembly efficiency; Second, in the later maintenance and replacement, the modular design eliminates the need to disassemble the entire coil, only requiring separate operation of the power supply component, which not only simplifies the maintenance process and lowers the maintenance threshold, but also allows for quick replacement, effectively reducing downtime caused by equipment failure. In addition, this modular structure provides convenience for the serialization of products, and can be flexibly adjusted based on a unified power supply component to adapt to different models of coils, enhancing the adaptability of the product.

[0017] (2) The coil for an electromagnetic valve described in this utility model includes a U-shaped frame and a cover plate disposed at the open end of the U-shaped frame. The U-shaped frame and the cover plate cooperate to form a closed structure, thereby reducing magnetic leakage of the support body. Specifically, the magnetic field has the characteristic of closing along the path of least magnetic reluctance. However, in traditional U-shaped or "I"-shaped supports, there is an obvious break in the magnetic circuit at the opening, making it difficult for the magnetic field to be completely conducted along the support. Some magnetic field lines will "leak out" from the opening, forming a leakage flux. In contrast, this application closes the opening of the U-shaped frame with the cover plate to form a complete annular magnetic circuit. The magnetic field lines are confined inside the closed metal support body, reducing the chance of divergence to the external space.

[0018] (3) The solenoid valve coil of this utility model has an energy-saving chip integrated on the circuit board. The energy-saving chip integrated on the circuit board of this utility model can significantly reduce the power consumption of the coil during operation. As the power is reduced, the heat generated during the operation of the coil is reduced accordingly, and the temperature rise is effectively controlled, thereby avoiding the problem of the coil burning out due to overheating and extending its service life. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 (Outer casing not shown); Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the power supply component of this utility model; Figure 4 This is a three-dimensional schematic diagram of the mounting bracket of this utility model; Figure 5 This is a three-dimensional schematic diagram of the support body of this utility model; Figure 6 This is a three-dimensional schematic diagram of the skeleton of this utility model; Figure 7 This is a schematic diagram of the overall structure of this utility model. Figure 2 .

[0021] Figures 1 to 7 The winning number is: 1. Bracket body; 11. U-shaped frame; 111. Mounting slot; 112. Protrusion; 12. Cover plate; 121. Mounting slot; 122. Round hole; 2. Frame; 21. Positive plug; 22. Negative plug; 3. Enamelled wire; 4. Power supply assembly; 41. Circuit board; 411. Energy saving chip; 42. Mounting bracket; 421. Fixing panel; 422. Mounting foot; 423. Abutment part; 43. Positive pin; 44. Negative pin; 45. Grounding pin; 5. Magnetic ring; 6. Outer shell. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 7 As shown, a coil for a solenoid valve includes a support body 1 and a frame 2 disposed inside the support body 1. The support body 1 includes a U-shaped frame 11 and a cover plate 12 disposed at the open end of the U-shaped frame 11. The top of the frame 2 is provided with a positive terminal plug 21 and a negative terminal plug 22. It also includes a power input component 4 that is snapped onto one side of the U-shaped frame 11. The power input component 4 includes a circuit board 41 and a mounting bracket 42. The mounting bracket 42 is fixedly provided with a positive terminal pin 43, a negative terminal pin 44, and a grounding pin 45. The grounding pin 45 is electrically connected to the U-shaped frame 11. The positive terminal plug 21, the negative terminal plug 22, the positive terminal pin 43, and the negative terminal pin 44 are respectively electrically connected to the circuit board 41. The cover plate 12 has a circular hole 122. The top of the frame 2 is provided with a magnetic ring 5 that is adapted to the circular hole 122. The magnetic ring 5 passes through the circular hole 122 and is inserted into the top of the frame 2. The outer wall of the frame 2 is wound with enameled wire 3.

[0030] Based on the above embodiments, the present invention aims to provide a coil for a solenoid valve, comprising a support body 1 and a frame 2 disposed inside the support body 1. The support body 1 includes a U-shaped frame 11 and a cover plate 12 disposed at the open end of the U-shaped frame 11, and also includes a power input component 4 clamped to one side of the U-shaped frame 11. The power input component 4 includes a circuit board 41 and a mounting bracket 42. The present invention adopts a modular design, integrating the circuit board 41 and the mounting bracket 42 into the power input component 4, thereby optimizing the entire process from production to maintenance: First, the assembly process is simplified due to the integration of parts, reducing the cumbersome process of scattered assembly and thus significantly improving assembly efficiency; second, in later maintenance and replacement, the modular design eliminates the need to disassemble the entire coil, requiring only individual operation of the power input component 4, which not only simplifies the maintenance process and lowers the maintenance threshold but also allows for quick replacement, effectively reducing equipment downtime due to malfunctions. Furthermore, this modular structure facilitates product series expansion, allowing for flexible adjustment based on a unified power input component 4 to adapt to different coil models, enhancing product adaptability.

[0031] In another preferred embodiment of this utility model, the mounting bracket 42 is provided with a fixing panel 421, and the positive terminal 43, negative terminal 44, and grounding terminal 45 are all disposed on the fixing panel 421. A locking foot 422 is provided on the side of the fixing panel 421 near the circuit board 41, and the U-shaped frame 11 is provided with a locking groove 111 that engages with the locking foot 422. The locking foot 422 is provided with a radially extending abutment portion 423, which engages with the U-shaped frame 11. Two locking feet 422 are provided, located on both sides of the fixing panel 421. In this embodiment, as... Figure 3 As shown, during installation, the power supply component 4 is installed onto the U-shaped frame 11 through the cooperation of the mounting feet 422 and the mounting slots 111, thus achieving the installation of the lower end of the power supply component 4. The mounting feet 422 achieve installation limitation through the abutment portion 423 and improve the stability of the installation. In a further preferred embodiment, the upper end of the circuit board 41 is provided with a first connection hole corresponding to the positive plug-in 21 and a second connection hole corresponding to the negative plug-in 22. The positive plug-in 21 is inserted into the first connection hole for welding and fixing, and the negative plug-in 22 is inserted into the second connection hole for welding and fixing, thereby achieving electrical connection between the positive plug-in 21, the negative plug-in 22 and the circuit board 41, and simultaneously achieving fixed connection of the upper end of the power supply component 4. Two mounting feet 422 are provided, and they are respectively located on both sides of the fixing panel 421, which can further improve the installation stability of the mounting bracket 42.

[0032] In another preferred embodiment of this utility model, the open end of the U-shaped frame 11 is provided with a protrusion 112, and the cover plate 12 is provided with a slot 121 adapted to the protrusion 112. The cover plate 12 is fixedly connected to the U-shaped frame 11 through the cooperation of the protrusion 112 and the slot 121. The cover plate 12 and the U-shaped frame 11 are made of the same material, both being conductive metal. In this embodiment, as... Figure 5 As shown, the cover plate 12 is fixedly connected to the U-shaped frame 11 through the cooperation of the protrusion 112 and the slot 121, so that the U-shaped frame 11 and the cover plate 12 cooperate to form a closed structure, thereby reducing the magnetic leakage of the bracket body 1. Specifically, the magnetic field has the characteristic of closing along the path of least magnetic reluctance. However, in traditional U-shaped brackets or "I"-shaped brackets, there is an obvious break in the magnetic circuit at the opening, and the magnetic field is difficult to be completely conducted along the bracket. Some magnetic field lines will "leak" from the opening, forming leakage flux. In contrast, this application closes the opening of the U-shaped frame 11 with the cover plate 12 to form a complete annular magnetic circuit. The magnetic field lines are constrained inside the closed metal bracket body 1, reducing the chance of divergence to the external space.

[0033] As another preferred embodiment of this utility model, a housing 6 is fixedly disposed on the outside of the bracket body 1 and the power supply component 4. The housing 6 is integrally injection molded, and the fixing panel 421 is located on one side of the surface of the housing 6. In this embodiment, as... Figure 7 As shown, the outer shell 6 is integrally injection molded to fix and encapsulate other parts. The material is thermosetting resin, which greatly reduces the assembly process of the coil for the solenoid valve, shortens the assembly time, and improves assembly efficiency.

[0034] As another preferred embodiment of this utility model, an energy-saving chip 411 is integrated on the circuit board 41. In this embodiment, as... Figure 3 As shown, the circuit board 41 integrates an energy-saving chip 411, a design that significantly reduces the power consumption of the coil during operation. With the reduction in power, the heat generated during coil operation decreases accordingly, effectively controlling the temperature rise and preventing the coil from burning out due to overheating, thus extending its service life.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A coil for a solenoid valve, comprising a support body (1) and a frame (2) disposed inside the support body (1), wherein the support body (1) comprises a U-shaped frame (11) and a cover plate (12) disposed at the open end of the U-shaped frame (11), and a positive electrode insert (21) and a negative electrode insert (22) are disposed on the top of the frame (2), characterized in that: It also includes a power supply assembly (4) that is mounted on one side of the U-shaped frame (11). The power supply assembly (4) includes a circuit board (41) and a mounting bracket (42). The mounting bracket (42) is fixedly provided with a positive terminal (43), a negative terminal (44) and a grounding terminal (45). The grounding terminal (45) is electrically connected to the U-shaped frame (11). The positive terminal plug (21), the negative terminal plug (22), the positive terminal (43) and the negative terminal (44) are electrically connected to the circuit board (41) respectively.

2. The coil for a solenoid valve according to claim 1, characterized in that: The mounting bracket (42) is provided with a fixed panel (421), and the positive terminal (43), negative terminal (44) and grounding terminal (45) are all provided on the fixed panel (421).

3. A coil for a solenoid valve according to claim 2, characterized in that: The fixed panel (421) is provided with a snap-fit ​​foot (422) on the side near the circuit board (41), and the U-shaped frame (11) is provided with a snap-fit ​​groove (111) that engages with the snap-fit ​​foot (422).

4. A coil for a solenoid valve according to claim 3, characterized in that: The mounting foot (422) is provided with a radially extending abutment portion (423), which abuts against the U-shaped frame (11).

5. A coil for a solenoid valve according to claim 3, characterized in that: Two mounting feet (422) are provided, located on both sides of the fixing panel (421).

6. A coil for a solenoid valve according to claim 1, characterized in that: The U-shaped frame (11) has a protrusion (112) at its open end, and the cover plate (12) has a slot (121) that matches the protrusion (112). The cover plate (12) is fixedly connected to the U-shaped frame (11) through the cooperation of the protrusion (112) and the slot (121).

7. A coil for a solenoid valve according to claim 1, characterized in that: The cover plate (12) has a circular hole (122), and the top of the skeleton (2) is provided with a magnetic ring (5) that is compatible with the circular hole (122). The magnetic ring (5) passes through the circular hole (122) and is inserted into the top of the skeleton (2).

8. A coil for a solenoid valve according to claim 2, characterized in that: The bracket body (1) and the power supply component (4) are fixedly provided with a shell (6), which is integrally injection molded by a mold, and the fixed panel (421) is located on one side of the shell (6).

9. A coil for a solenoid valve according to claim 1, characterized in that: An energy-saving chip (411) is integrated on the circuit board (41).

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