Electromagnetic valve

Abstract

The invention relates to an electromagnetic valve in the technical field of electromagnetic valves, which comprises a valve body, the valve body is provided with a first channel and a second channel which are communicated with the outside, and the first channel and the second channel are connected through a valve mechanism. The valve mechanism comprises a valve element used for blocking the first channel and an electromagnetic structure used for driving the valve element to move. In the driving direction perpendicular to the electromagnetic structure, the electromagnetic structure, the first channel and the second channel are located in the same horizontal area. According to the electromagnetic valve, the electromagnetic structure, the first channel and the second channel are arranged in the same horizontal area in a staggered mode, and the overall thickness of the electromagnetic valve is obviously reduced. By means of the design, the problem that in the prior art, the overall thickness of the electromagnetic valve is increased due to electromagnetic structure layout is solved, the valve is opened and closed in the mode that the elastic piece drives the plug to swing, mechanical friction and abrasion are avoided, mechanical noise is reduced, the service life of the electromagnetic valve is prolonged, and the stability of the electromagnetic valve is improved.

Description

A solenoid valve Technical Field

[0001] This invention relates to the field of solenoid valve technology, and specifically to a solenoid valve. Background Technology

[0002] The working principle of a solenoid valve is to energize the solenoid coil, causing the iron core wound around the coil to become magnetic, attracting the armature below the iron core to move, thereby causing the valve port sealing part to separate from the valve port, opening the valve and allowing gas and liquid to pass through.

[0003] Conventional solenoid valves have no external protective structure for their coils, resulting in severe magnetic leakage, low magnetic field utilization, and susceptibility to external magnetic field interference. Furthermore, their valve cores are large and heavy, requiring significant kinetic energy for switching operations. This leads to an increase in the number of coil turns, power consumption, and heat generation without active cooling, making them unsuitable for prolonged use. Additionally, the valve core directly contacts the valve body via sliding friction, making it prone to jamming and failure, and generating considerable noise.

[0004] To solve this technical problem, this paper refers to a novel solenoid valve proposed earlier by the applicant (patent number ZL202411273208.0). By embedding the magnet and coil inside the housing, the magnetic leakage phenomenon is greatly reduced, the magnetic field utilization rate of the coil is improved, the number of coil turns is reduced, the power consumption is reduced, and the heat generation problem of the solenoid valve is effectively solved. At the same time, the housing can effectively isolate the external magnetic field, avoid interference to the internal electromagnetic structure, and ensure the stability of the solenoid valve's operation. Furthermore, the coil and valve core with cantilever support are arranged in the gap between the isolation housing and the magnet, so that no mechanical friction occurs during the driving and switching process of the solenoid valve, completely solving the problems of wear and mechanical noise of the solenoid valve.

[0005] In practical applications, the inventors discovered that although the aforementioned solenoid valve solved the technical problem of electromagnetic utilization, its overall thickness was relatively large in this direction due to the fact that the driving direction of its electromagnetic structure was on the same axis as the air passage. This was influenced by the large volume of the electromagnetic structure, which severely limited its application in situations with limited installation space. Therefore, to solve this technical problem, this invention proposes a solenoid valve. Summary of the Invention

[0006] This invention provides a solenoid valve that completely solves the problem of excessively large solenoid valve size by staggering the electromagnetic structure, the first channel and the second channel, and changing the way the electromagnetic structure drives the valve core.

[0007] The objective of this invention is achieved through the following means: a solenoid valve, comprising a valve body, wherein the valve body is provided with a first channel and a second channel for communicating with the outside, the first channel and the second channel being connected by a valve mechanism, the valve mechanism comprising a valve core and an electromagnetic structure for driving the valve core to move; in a driving direction perpendicular to the electromagnetic structure, the electromagnetic structure, the first channel and the second channel are in the same horizontal region, and the thickness of the horizontal region is less than or equal to the sum of the thickness of the electromagnetic structure and the thickness of the first channel; the valve core comprises a spring plate and a plug for sealing the first channel, one end of the spring plate being connected to the valve body via a cantilever, the plug being mounted on the spring plate, and the electromagnetic structure being used to drive the spring plate to swing up and down along the cantilever.

[0008] As a preferred embodiment of a solenoid valve, the electromagnetic structure includes a magnet, a housing, and a coil. The housing is installed inside the valve body, the magnet is installed inside the housing, a gap is provided between the inner wall of the housing and the magnet, and the coil is installed on the spring and suspended within the gap.

[0009] As a preferred embodiment of the solenoid valve, it also includes power connectors symmetrically arranged on both sides of the cover. One end of each power connector protrudes from the valve body, and the other end is provided with a solder pad. The coil is electrically connected to the solder pad via a wire.

[0010] As a preferred embodiment of the solenoid valve, the center line of the coil is offset relative to the center line of the magnet, moving closer to the cantilever.

[0011] As a preferred embodiment of a solenoid valve, the spring is integrally formed from a rigid support portion and a connecting portion. The connecting portion is installed in the valve body. The plug and the coil are both disposed on the rigid support portion. One end of the rigid support portion is connected to the connecting portion through the cantilever. When the electromagnetic structure is driven, the rigid support portion swings up and down along the cantilever.

[0012] As a preferred embodiment of the solenoid valve, the spring is provided with a magnetic plate or a spring, the magnetic plate being used to magnetically engage with the magnet, and the spring being used to abut against the valve body.

[0013] As a preferred embodiment of a solenoid valve, the electromagnetic structure is located at the end of the valve body away from the cantilever, and the plug is located at the end of the spring plate close to the cantilever.

[0014] As a preferred embodiment of a solenoid valve, the electromagnetic structure is disposed at one end of the valve body near the cantilever, and the plug is disposed at the end of the spring piece away from the cantilever.

[0015] As a preferred embodiment of the solenoid valve, the first channel is provided with an opening, the extension direction of the opening is aligned with the swing direction of the plug, and the plug abuts against the opening, thereby isolating the first channel and the second channel.

[0016] As a preferred embodiment of the solenoid valve, the valve body is provided with an exhaust port at the position corresponding to the opening, and a space is provided between the exhaust port and the opening for the plug to swing up and down; when the plug abuts against the opening, the second channel is connected to the exhaust port; when the plug abuts against the exhaust port, the second channel is connected to the first channel.

[0017] As a preferred embodiment of the solenoid valve, the first channel extends through the valve body, and a plug and a socket are respectively provided at both ends of the first channel.

[0018] The solenoid valve of this invention features a staggered arrangement of the electromagnetic structure, the first channel, and the second channel within the same horizontal region, significantly reducing the overall thickness of the solenoid valve. This design not only solves the problem of increased overall thickness of solenoid valves due to the electromagnetic structure layout in existing technologies, but also utilizes a spring-loaded plug to swing, thereby achieving valve opening and closing, avoiding mechanical friction and wear, reducing mechanical noise, and improving the service life and stability of the solenoid valve. Attached Figure Description

[0019] Figure 1 is a structural schematic diagram of the solenoid valve in Embodiment 1; Figure 2 is a cross-sectional view of the solenoid valve in Embodiment 1; Figure 3 is a front view of the solenoid valve in Embodiment 1; Figure 4 is a cross-sectional view along line AA in Figure 3; Figure 5 is a schematic diagram of the solenoid valve in Embodiment 1 when it is open; Figure 6 is a schematic diagram of the solenoid valve in Embodiment 1 when it is closed; Figure 7 is a structural schematic diagram of the spring in Embodiment 1; Figure 8 is an internal schematic diagram of the solenoid valve in Embodiment 1; Figure 9 is a schematic diagram of the first series connection of the solenoid valve in Embodiment 1; Figure 10 is a schematic diagram of the second series connection of the solenoid valve in Embodiment 1; Figure 11 is a structural schematic diagram of the solenoid valve in Embodiment 2; Figure 12 is an internal schematic diagram of the solenoid valve in Embodiment 2; Figure 13 is a cross-sectional view of the solenoid valve in Embodiment 2; Figure 14 is an internal schematic diagram of the solenoid valve in Embodiment 3; Figure 15 is a schematic diagram of the solenoid valve in Embodiment 3 when it is closed; Figure 16 is a schematic diagram of the solenoid valve in Embodiment 3 when it is open; Figure 17 is a schematic diagram of the coil arrangement in Embodiments 1 to 3; Figure 18 is a schematic diagram of the coil arrangement in Embodiment 3.

[0020] The reference numerals in the figure are as follows: 1-valve body, 10-horizontal area, 11-first channel, 12-second channel, 13-opening, 14-exhaust port, 15-plug, 16-socket, 17-limiting slope, 2-valve core, 21-spring, 211-rigid bearing part, 212-cantilever, 213-connection part, 22-plug, 3-electromagnetic structure, 31-magnet, 32-cover, 33-coil, 34-gap, 35-magnetic sheet, 36-magnetic plate, 4-power connection pin, 41-soldering pad. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 the present invention.

[0025] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0026] Example 1: In the accompanying drawings of this example, the Z-axis is the driving direction of the electromagnetic structure 3, and the X-axis is the width extension direction of the horizontal region 10 (this direction is perpendicular to the driving direction of the electromagnetic structure 3).

[0027] In one embodiment of the present invention, as shown in Figures 1-10, a specific implementation of an electromagnetic valve includes a valve body 1. The valve body 1 is provided with a first channel 11 and a second channel 12 for communicating with the outside. The first channel 11 and the second channel 12 are connected by a valve mechanism. The valve mechanism includes a valve core 2 and an electromagnetic structure 3 for driving the valve core 2 to move.

[0028] As shown in Figure 2, in the driving direction perpendicular to the electromagnetic structure 3, the electromagnetic structure 3, the first channel 11 and the second channel 12 are located in the same horizontal region 10, and the thickness W1 of the horizontal region 10 is less than or equal to the sum of the thickness W2 of the electromagnetic structure 3 and the thickness W3 of the first channel 11.

[0029] The upper and lower thickness boundaries of the horizontal region 10 are determined based on the electromagnetic structure 3, the first channel 11, and the second channel 12. Taking the solenoid valve of this embodiment as an example, along the driving direction of the electromagnetic structure 3, the highest point of the electromagnetic structure 3 is higher than the highest points of the first channel 11 and the second channel 12, while the lowest point of the first channel 11 is lower than the lowest points of the electromagnetic structure 3 and the second channel 12. Therefore, the upper boundary of the horizontal region 10 is based on the highest point of the electromagnetic structure 3, and the lower boundary of the horizontal region 10 is based on the lowest point of the first channel 11.

[0030] The valve core 2 includes a spring plate 21 and a plug 22 for blocking the first channel 11. One end of the spring plate 21 is connected to the valve body 1 through a cantilever 212. The plug 22 is installed on the spring plate 21. The electromagnetic structure 3 is used to drive the spring plate 21 to swing up and down along the cantilever 212.

[0031] In this embodiment, the plug 22 is made of soft sealing materials such as silicone.

[0032] As shown in Figure 4, the electromagnetic structure 3 includes a magnet 31, a housing 32, and a coil 33. The housing 32 is installed inside the valve body 1, and the magnet 31 is installed inside the housing 32. A gap 34 is provided between the inner wall of the housing 32 and the magnet 31. The coil 33 is installed on the spring piece 21 and suspended within the gap 34. By housing the magnet 31 and the coil 33 within the housing 32, magnetic leakage is significantly reduced, the magnetic field utilization rate of the coil 33 is improved, the number of turns of the coil 33 is reduced, power consumption is lowered, and the overheating problem of the solenoid valve is effectively solved. At the same time, the housing 32 can effectively isolate external magnetic fields, preventing interference to the internal electromagnetic structure 3 and ensuring the stability of the solenoid valve's operation. Furthermore, by arranging the magnet 31 and the coil 33 at intervals within the housing 32, no mechanical friction occurs during the actuation and switching of the solenoid valve, thus solving the problems of wear and noise in the solenoid valve.

[0033] Furthermore, a magnetic conductive sheet 35 is provided at the upper end of the magnet 31. The magnetic conductive sheet 35, made of iron-nickel magnetic material, constrains the magnetic field lines of the magnet 31 in the gap 34 between the cover 32 and the magnet 31, so that the magnetic field lines of the magnet 31 can be concentrated on the coil 33, which greatly reduces magnetic leakage, improves the magnetic field utilization rate of the coil 33, reduces the number of turns of the coil 33, reduces power consumption, and effectively solves the heat generation problem of the solenoid valve. At the same time, the cover 32 can effectively isolate the external magnetic field, prevent the internal electromagnetic structure 3 from being interfered with, and ensure the stability of the solenoid valve's operation.

[0034] In this embodiment, a magnetic attracting piece 36 is provided on the spring piece 21, which is used to magnetically engage with the magnet 31. Specifically, when the coil 33 is de-energized, the magnetic field generated by the coil 33 disappears, and the magnetic attracting piece 36 and the magnet 31 attract each other due to magnetic attraction, causing the spring piece 21 to reset, so that the plug 22 re-seals the first channel 11, realizing the normally closed function of the solenoid valve when de-energized. This design makes the closing action of the solenoid valve faster and more reliable, effectively improving the overall performance of the solenoid valve.

[0035] The magnetic chuck 36 is made of materials such as iron and nickel, which have good magnetic permeability and stability, ensuring a lasting and stable magnetic attraction between the magnetic chuck 36 and the magnet 31. During the operation of the solenoid valve, the iron-nickel alloy magnetic chuck 36 can quickly respond to changes in the magnetism of the magnet 31, achieving precise reset of the spring 21, thereby ensuring the reliable operation of the solenoid valve.

[0036] Alternatively, as a common alternative in this field, a spring can be provided on the spring plate 21 for abutting against the valve body 1. Through the spring's elastic force, when the electromagnetic structure 3 stops driving, the spring plate 21 quickly resets, thereby causing the plug 22 to seal the first channel 11, achieving the normally closed function of the solenoid valve when de-energized. However, compared to the design using a magnetic plate 36, using a spring may lead to elastic fatigue due to long-term use, affecting the reliability and stability of the solenoid valve's closing. The combination of the magnetic plate 36 and the magnet 31 avoids this problem, offering a longer service life and more stable performance.

[0037] As shown in Figures 5-6, in this embodiment, the first channel 11 is set as the air inlet, and the second channel 12 is set as the air outlet, i.e., the port used to connect the pneumatic unit. In this embodiment, the cover 32 is disposed between the first channel 11 and the second channel 12, and the plug 22 is disposed at the end of the spring piece 21 away from the connecting part 213. When the electromagnetic structure 3 drives the plug 22 to loosen the seal on the first channel 11, the high-pressure gas in the first channel 11 passes through the electromagnetic structure 3 and the second channel 12 in sequence, and is finally output to the external pneumatic unit. During the process of the high-pressure gas passing through the electromagnetic structure 3, it will simultaneously carry away the heat generated by the electromagnetic structure 3, achieving a good heat dissipation effect. This heat dissipation method does not require an additional heat dissipation device, simplifies the structure of the solenoid valve, reduces manufacturing costs, and also improves the reliability and stability of the solenoid valve.

[0038] The first channel 11 is provided with an opening 13, the extension direction of which is aligned with the swing direction of the plug 22. The plug 22 abuts against the opening 13, thus isolating the first channel 11 and the second channel 12. This design ensures that the plug 22 can fit tightly against the opening 13, effectively preventing gas leakage and improving the sealing performance of the solenoid valve. Simultaneously, the alignment of the extension direction of the opening 13 with the swing direction of the plug 22 allows the plug 22 to open or close the first channel 11 more smoothly during swinging, reducing energy loss due to friction and further improving the working efficiency of the solenoid valve.

[0039] The valve body 1 is provided with an exhaust port 14 at the position corresponding to the opening 13, and there is a space between the exhaust port 14 and the opening 13 for the plug 22 to swing up and down.

[0040] When the plug 22 abuts against the opening 13, the second channel 12 is connected to the exhaust port 14; when the plug 22 abuts against the exhaust port 14, the second channel 12 is connected to the first channel 11. This design enables flexible switching of the internal air path of the solenoid valve.

[0041] When the electromagnetic structure 3 is not energized, the plug 22 is tightly abutted against the opening 13 by the magnetic attraction of the magnetic plate 36 and the magnet 31. At this time, the second channel 12 is connected to the exhaust port 14, and the air passage between the external pneumatic unit and the first channel 11 is disconnected. When the electromagnetic structure 3 is energized and generates a magnetic field, the interaction force between the coil 33 and the magnet 31 overcomes the magnetic attraction force, causing the spring plate 21 to swing, so that the plug 22 leaves the opening 13 and abuts against the exhaust port 14. At this time, the first channel 11 and the second channel 12 are connected, and high-pressure gas can flow in from the inlet end and be output to the external pneumatic unit through the outlet end, thereby realizing the drive control of the pneumatic unit. With this structural setting, the solenoid valve can accurately control the opening and closing of the air passage according to the energization state of the electromagnetic structure 3, meeting the usage requirements under different working conditions. This invention uses the electromagnetic structure 3 to drive the spring plate 21 and the plug 22 to swing up and down, realizing flexible on / off control between the first channel 11 and the second channel 12. This design is not only compact and responsive, but also has high reliability and stability.

[0042] Furthermore, to improve the swing accuracy of the spring 21, a limiting slope 17 is provided on the valve body 1 to abut against the spring 21. When the spring 21 swings to a specific position, the limiting slope 17 can contact the spring 21, precisely limiting its swing amplitude and preventing the spring 21 from deviating from its position due to excessive swing. This ensures that the plug 22 can accurately abut against the opening 13 or the exhaust port 14, effectively improving the accuracy of the solenoid valve in controlling the on / off state of the air passage. At the same time, the design of the limiting slope 17 also enhances the stability of the spring 21's swing, reducing the shaking of the spring 21 during the swing process and lowering the probability of problems such as poor sealing and poor air passage switching caused by the instability of the spring 21, further ensuring the overall performance of the solenoid valve.

[0043] As shown in Figures 7-8, the spring piece 21 is integrally stamped from a rigid bearing part 211, a cantilever 212, and a connecting part 213. The cantilever 212 is disposed between the rigid bearing part 211 and the connecting part 213. The connecting part 213 has a U-shaped structure and is embedded in the inner wall of the valve body 1 to form a stable fulcrum for the swing of the spring piece 21. The cantilever 212 adopts a single-arm structure with narrowing sides, forming a weak area that can deform and bend. Under the drive of the electromagnetic structure 3, the cantilever 212 can deform rapidly, driving the plug 22 to realize the opening and closing action of the first channel 11. The rigid bearing part 211 adopts a wide plate structure, and the plug 22 and the coil 33 are both disposed on the rigid bearing part 211.

[0044] The rigid support portion 211 provides a stable mounting base for the plug 22 and coil 33, ensuring that the plug 22 and coil 33 maintain a stable positional relationship during the operation of the solenoid valve, and will not deform or shift due to the deformation of the cantilever 212, thereby guaranteeing the reliability and stability of the solenoid valve. Meanwhile, this one-piece stamped spring 21 structure not only simplifies the manufacturing process and reduces production costs, but also improves the overall strength and durability of the spring 21.

[0045] The U-shaped connecting part 213 can evenly distribute the stress generated when the spring 21 swings, avoiding stress concentration that could damage the spring 21 and extending the service life of the solenoid valve. The cantilever 212, with its narrowing design on both sides, ensures sufficient deformation capacity while reducing material usage, further lowering manufacturing costs. The rigid bearing part 211 with its wide plate structure can withstand greater forces, ensuring that the spring 21 will not deform excessively or break under high-pressure gas impact or electromagnetic structure 3 actuation, thus improving the solenoid valve's impact resistance and operational stability. In addition, this one-piece stamped spring 21 structure also has good interchangeability, allowing for quick disassembly and assembly of the spring 21 during solenoid valve maintenance and replacement, improving equipment maintainability and operational efficiency.

[0046] The solenoid valve in this embodiment also includes power connector pins 4 symmetrically arranged on both sides of the housing 32. One end of each power connector pin 4 protrudes from the valve body 1, and the other end is provided with a solder pad 41. The coil 33 is electrically connected to the solder pad 41 via a wire. The design of the power connector pins 4 allows the solenoid valve to be easily connected to an external circuit, realizing power input and signal transmission. The solder pad 41 provides a stable electrical connection point, ensuring a reliable and stable connection between the coil 33 and the external circuit. This design not only simplifies the wiring process of the solenoid valve and improves assembly efficiency, but also enhances the electrical performance of the solenoid valve and reduces the risk of failure caused by poor contact. At the same time, the symmetrical arrangement of the power connector pins 4 also makes the solenoid valve more stable during installation, less prone to loosening or displacement due to external forces, further improving the working stability and reliability of the solenoid valve.

[0047] The solenoid valve of this invention features a staggered arrangement of the electromagnetic structure 3, the first channel 11, and the second channel 12 within the same horizontal region 10, effectively reducing the overall thickness of the solenoid valve. This design not only solves the problem of increased overall thickness of the solenoid valve due to the large size of the electromagnetic structure 3 in existing technologies, but also makes the solenoid valve more widely applicable in situations with limited installation space. Simultaneously, the valve opening and closing is achieved by the spring 21 driving the plug 22 to swing, avoiding mechanical friction and wear, reducing mechanical noise, and improving the service life and stability of the solenoid valve.

[0048] In practical applications, existing solenoid valves require additional air passage components (connecting nozzles, manifolds, etc.) to connect with external air sources or other solenoid valves. This arrangement not only results in high assembly costs but also requires additional installation space for a large number of supporting structures, increasing the overall size and complexity of the equipment.

[0049] Based on this, as shown in Figures 9-10, the present invention provides a solenoid valve in which a first channel 11 passes through the valve body 1, and a plug 15 and a socket 16 are respectively provided at both ends of the first channel 11. The plug 15 and socket 16 adopt a standardized design, which can achieve quick and accurate connection with the connector of the external air source and the corresponding interface of other solenoid valves. This integrated design eliminates the need for additional air passage parts required by traditional solenoid valves, such as connecting nozzles and manifolds, greatly simplifying the assembly process and reducing assembly costs. At the same time, due to the reduction of a large number of supporting structures, the installation space occupied by the solenoid valve as a whole is significantly reduced, making the equipment layout more compact, effectively reducing the overall size and complexity of the equipment, and improving the space utilization and overall aesthetics of the equipment. Moreover, the standardized design of the plug 15 and socket 16 has good versatility and interchangeability, which can quickly complete the disassembly and assembly operations when maintaining the equipment and replacing the solenoid valve, reducing maintenance time and difficulty, and improving the maintainability and efficiency of the equipment.

[0050] In this embodiment, two adjacent solenoid valves are connected to each other by a snap-fit ​​mechanism.

[0051] Furthermore, this solenoid valve allows for the rapid series connection of multiple solenoid valves via standardized plugs 15 and sockets 16 at both ends, enabling the efficient construction of a pneumatic control system. In practical applications, when multiple solenoid valves need to work collaboratively to achieve precise control of multiple pneumatic units, traditional methods often require cumbersome piping connections and additional control components. However, the solenoid valve provided by this invention, with its standardized plugs 15 and sockets 16 at both ends, can easily achieve rapid series connection between multiple solenoid valves. This series connection method not only simplifies the construction process of the pneumatic control system, reducing piping connections and the use of additional control components, but also improves the overall reliability and stability of the system. During the series connection process, the precise docking of the plugs 15 and sockets 16 ensures unobstructed airflow, allowing high-pressure gas to flow smoothly between the solenoid valves, thereby achieving synchronous or sequential control of multiple pneumatic units. Simultaneously, because the connection between the solenoid valves adopts a standardized design, when it is necessary to expand or modify the pneumatic control system, simply adding or removing the number of solenoid valves and quickly connecting or disconnecting them via plugs 15 and sockets 16 can easily complete the system adjustment and optimization. This flexibility and scalability enable the solenoid valve of this invention to demonstrate significant advantages in various complex pneumatic control scenarios. Whether it's small automated equipment or large industrial production lines, this solenoid valve can be used to quickly build efficient, stable, and easy-to-maintain pneumatic control systems. Moreover, this standardized series design greatly facilitates subsequent equipment upgrades and modifications, reducing long-term operating costs.

[0052] Example 2: As shown in Figures 11-13, the solenoid valve in this example is specifically configured as a two-position three-way structure. Specifically, within a valve body 1, two sets of electromagnetic structures 3 are connected in parallel through a first channel 11. Each set of electromagnetic structures 3 controls the opening and closing of a second channel 12, thereby achieving precise control of two independent air paths. This design not only improves the functionality of the solenoid valve but also significantly enhances its adaptability in complex pneumatic systems. Connecting two sets of electromagnetic structures 3 through a first channel 11 effectively reduces gas flow resistance within the valve body 1, improves gas transmission efficiency, and avoids airflow turbulence problems that may be caused by multi-channel layouts. Furthermore, the two-position three-way structure design allows the solenoid valve to complete air path switching in a shorter time, meeting the requirements of high-frequency, high-precision operating conditions.

[0053] Furthermore, in practical applications, the solenoid valve can be designed as a three-position, three-way, or more-passage structure according to actual needs, in order to meet the usage requirements in different scenarios.

[0054] Example 3: As shown in Figures 14-16, the difference between this example and Examples 1 and 2 is that the electromagnetic structure 3 is located at the end of the valve body 1 away from the cantilever 212, and the plug 22 is located at the end of the spring piece 21 close to the cantilever 212.

[0055] Based on the lever principle, in this embodiment, the electromagnetic structure 3, which serves as the power source, is positioned at the end away from the pivot point of the spring piece 21, while the plug 22 is positioned in the middle of the spring piece 21, closer to the pivot point. When the electromagnetic structure 3 is energized and generates a magnetic field, the force generated by the interaction between the coil 33 and the magnet 31 causes the spring piece 21 to swing around the connecting part 213 as the pivot point. Since the plug 22 is closer to the connecting part 213, according to the lever principle, a smaller force can drive the plug 22 to move, thereby more easily realizing the opening and closing action of the first channel 11. This design further optimizes the force transmission efficiency while ensuring the normal operation of the solenoid valve, effectively reducing the power consumption of the electromagnetic structure 3.

[0056] Compared to the design of Embodiment 1, this embodiment achieves more efficient force transmission by adjusting the positional relationship between the electromagnetic structure 3 and the plug 22, thereby reducing the energy consumption requirement of the electromagnetic structure 3. Specifically, the electromagnetic structure 3 is positioned at the end of the valve body 1 away from the cantilever 212, increasing the force arm between the coil 33 and the magnet 31, while the arrangement of the plug 22 closer to the cantilever 212 shortens the load force arm. According to the lever balance condition, when the power arm is greater than the resistance arm, the required power decreases. Therefore, the electromagnetic structure 3 only needs a small current to drive the spring 21 to swing, thereby driving the plug 22 to complete the channel switching. This design reduces energy consumption and the heat generated during the operation of the electromagnetic structure 3. Although it does not have the ventilation and heat dissipation effect of Embodiment 1, by optimizing the power of the electromagnetic structure 3, heat generation is reduced from the source, which also improves the stability of the solenoid valve under long-term operation. At the same time, the application of the lever principle makes the force distribution of the spring 21 more uniform, reducing material fatigue caused by local stress concentration and extending the service life of the spring 21. Furthermore, this structural adjustment did not increase the overall thickness of the solenoid valve. On the contrary, the staggered layout of the solenoid structure 3 and the plug 22 made more compact use of internal space, further reducing manufacturing costs. In practical applications, this low-power design is particularly suitable for battery-powered or heat-sensitive scenarios, such as portable medical devices or precision instruments, ensuring both control accuracy and improved system reliability.

[0057] Example 4: As shown in Figure 17, in the above example, the coil 33 is centrally suspended on the magnet 31. This layout structure has high balance. The centrally suspended design makes the magnetic field distribution between the coil 33 and the magnet 31 more uniform, thereby improving the response speed and control accuracy of the solenoid valve.

[0058] In practical applications, when the flow rate in the valve body 1 increases, the opening angle of the spring 21 needs to be increased simultaneously to meet the demand for greater airflow. However, the solenoid valve with the coil 33 centrally located can only achieve a larger opening angle by increasing the width of the gap 34, but an excessively large gap 34 width will reduce the utilization rate of the magnetic field by the coil 33.

[0059] To address the aforementioned technical problems, as shown in Figure 18, in this embodiment, the centerline of the coil 33 is eccentrically positioned relative to the centerline of the magnet 31, towards the cantilever 212. Therefore, without changing the width of the gap 34, the space within the gap 34 can be utilized to the maximum extent by eccentrically positioning the coil 33. This eccentric design not only fully utilizes the magnetic field but also increases the maximum swing angle of the spring 21.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A solenoid valve, comprising a valve body (1), the valve body (1) having a first channel (11) and a second channel (12) for communicating with the outside, the first channel (11) and the second channel (12) being connected by a valve mechanism, the valve mechanism comprising a valve core (2) and an electromagnetic structure (3) for driving the valve core (2) to move; characterized in that, In the driving direction perpendicular to the electromagnetic structure (3), the electromagnetic structure (3), the first channel (11) and the second channel (12) are in the same horizontal region (10), and the thickness of the horizontal region (10) is less than or equal to the sum of the thickness of the electromagnetic structure (3) and the thickness of the first channel (11); the valve core (2) includes a spring (21) and a plug (22) for blocking the first channel (11). One end of the spring (21) is connected to the valve body (1) through a cantilever (212). The plug (22) is installed on the spring (21). The electromagnetic structure (3) is used to drive the spring (21) to swing up and down along the cantilever (212).

2. The solenoid valve according to claim 1, characterized in that: The electromagnetic structure (3) includes a magnet (31), a cover (32) and a coil (33). The cover (32) is installed inside the valve body (1), the magnet (31) is installed inside the cover (32), and a gap (34) is provided between the inner wall of the cover (32) and the magnet (31). The coil (33) is installed on the spring (21) and suspended in the gap (34).

3. The solenoid valve according to claim 2, characterized in that, It also includes power connectors (4) symmetrically arranged on both sides of the cover (32). One end of the power connector (4) protrudes from the valve body (1), and the other end is provided with a solder pad (41). The coil (33) is electrically connected to the solder pad (41) through a wire.

4. The solenoid valve according to claim 2, characterized in that: The center line of the coil (33) is offset relative to the center line of the magnet (31) towards the cantilever (212).

5. The solenoid valve according to claim 2, characterized in that: The spring (21) is integrally formed by a rigid bearing part (211) and a connecting part (213). The connecting part (213) is installed inside the valve body (1). The plug (22) and the coil (33) are both disposed on the rigid bearing part (211). One end of the rigid bearing part (211) is connected to the connecting part (213) through the cantilever (212). When the electromagnetic structure (3) is driven, the rigid bearing part (211) swings up and down along the cantilever (212).

6. The solenoid valve according to claim 5, characterized in that: The spring (21) is provided with a magnetic plate (36) or a spring. The magnetic plate (36) is used to magnetically attract the magnet (31), and the spring is used to abut against the valve body (1).

7. A solenoid valve according to any one of claims 2-6, characterized in that: The electromagnetic structure (3) is located at one end of the valve body (1) away from the cantilever (212), and the plug (22) is located at one end of the spring piece (21) near the cantilever (212).

8. A solenoid valve according to any one of claims 2-6, characterized in that: The electromagnetic structure (3) is located at one end of the valve body (1) near the cantilever (212), and the plug (22) is located at one end of the spring piece (21) away from the cantilever (212).

9. The solenoid valve according to claim 1, characterized in that: The first channel (11) is provided with an opening (13), the extension direction of the opening (13) is aligned with the swing direction of the plug (22), and the plug (22) abuts against the opening (13) to separate the first channel (11) and the second channel (12).

10. A solenoid valve according to claim 9, characterized in that: The valve body (1) is provided with an exhaust port (14) at the position corresponding to the opening (13). There is a space between the exhaust port (14) and the opening (13) for the plug (22) to swing up and down. When the plug (22) abuts against the opening (13), the second channel (12) is connected to the exhaust port (14). When the plug (22) abuts against the exhaust port (14), the second channel (12) is connected to the first channel (11).

11. The solenoid valve according to claim 10, characterized in that: The first channel (11) passes through the valve body (1), and a plug (15) and a socket (16) are respectively provided at both ends of the first channel (11).

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