Low-power-consumption high-speed on-off switch electromagnet

Abstract

The invention provides a low-power-consumption high-speed on-off switch electromagnet. The low-power-consumption high-speed on-off switch electromagnet comprises a coil injection molding shell, a plug, a shell, a coil injection molding framework, a first coil, a first permanent magnet set, a second permanent magnet set, a second coil, a pole shoe, a push rod, an armature, a reset structure and a coil metal framework. The plug is located in the coil injection molding shell, the shell is connected with the coil injection molding shell, the coil injection molding framework is connected in the coil injection molding shell, and the first coil and the second coil are arranged between the coil injection molding framework and the coil injection molding shell and connected with the plug. The coil metal framework is connected in the coil injection molding framework; the first permanent magnet group and the second permanent magnet group are embedded in the coil metal framework; the armature and the pole shoe are oppositely arranged in the coil metal framework to form a closed magnetic circuit; the reset structure is connected with the push rod and the pole shoe; the armature axially slides in the coil metal framework, and the push rod axially slides in the pole shoe. High-speed opening and closing can be realized by electrifying in a short time, and meanwhile, energy loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnets, and in particular to a low-power consumption and high-speed on-off switch electromagnet. Background Art

[0002] In hydraulic and pneumatic control systems, electromagnets are a key control component whose performance directly affects the working stability and energy efficiency of the entire system. When traditional electromagnets are turned on or off for a long time, the coils are continuously energized, which results in high energy consumption and may affect their performance and life due to heat accumulation.

[0003] For example, a high-reliability electromagnet structure disclosed in Chinese invention patent 202311312470.7 includes: a relay-type magnetic pole, the relay-type magnetic pole is connected to a coil support, the excitation coil is sleeved outside the relay-type magnetic pole and the coil support, the yoke is sleeved outside the coil, the yoke is connected and fastened to the magnetic pole, the armature is connected to the sleeve shaft, the magnetic pole has a guide groove, a compression spring is arranged in the guide groove, the combined part formed by the armature and the sleeve shaft is inserted into the guide groove of the magnetic pole, the base passes through the sleeve shaft and fits on the bottom surface of the armature, the base is connected and fastened to the coil support, and a structural intersection is generated between the relay-type magnetic pole and the armature. This invention can only function in special circumstances, such as when the voltage is insufficient, and is not universal.

[0004] The prior art is an invention patent named switch device, the publication number of which is KR1020230066657A. This invention includes at least one fixed contact, a movable contact, an armature, a permanent magnet and a solenoid-operated switch. In this case, the movable contact can be moved by the armature, the permanent magnet is fixed on the armature, and the electromagnetic-operated switch is a Hall switch, but this invention cannot remain closed or open for a long time. Summary of the invention

[0005] In response to the technical problems raised above, a low-power high-speed opening and closing switch electromagnet is provided, which can realize high-speed opening and closing by powering on in a short time while reducing energy loss.

[0006] The technical means adopted by the present invention are as follows:

[0007] A low-power consumption, high-speed on-off switch electromagnet, comprising: a coil injection-molded housing, a plug, a housing, a coil injection-molded frame, a first coil, a first permanent magnet group, a second permanent magnet group, a second coil, a pole shoe, a push rod, an armature, a reset structure and a coil metal frame;

[0008] The plug is located inside one side of the coil injection-molded shell, the shell is sealed and connected to the outside of the other side of the coil injection-molded shell, the coil injection-molded skeleton is connected to the inside of the other side of the coil injection-molded shell, the first coil and the second coil are installed between the outer wall of the coil injection-molded skeleton and the coil injection-molded shell, and the first coil and the second coil are both connected to the plug;

[0009] The coil metal frame is connected to the inside of the coil injection frame, and the first permanent magnet group and the second permanent magnet group are embedded in the coil metal frame at intervals;

[0010] The armature is placed on one side of the coil metal frame, the pole shoe is sealed and connected to the other side of the coil metal frame, the pole shoe and the armature are arranged opposite to each other to form a closed magnetic circuit; the push rod is connected to the armature, and the reset structure is connected to the push rod and the pole shoe; the armature slides axially along the coil metal frame, and the push rod slides axially along the pole shoe.

[0011] Furthermore, the reset structure comprises a spring, wherein the spring is located in the push rod cavity, and one end of the spring is connected to the push rod, and the other end of the spring is connected to the pole shoe; the spring is made of highly elastic stainless steel or alloy.

[0012] Furthermore, the first coil is energized to generate Φ 1 The magnitude of the magnetic field, in Φ 1 Under the action of the armature, the armature overcomes the inertial force and moves forward a distance Δx in the direction of the pole shoe within a time of Δt. At this time, the first coil is powered off, the first permanent magnet group is linked with the second permanent magnet group, and the second permanent magnet group is linked with the first permanent magnet group to generate an attractive force F 1 , gravity F 1 Overcome the spring force F 弹 The armature and the push rod move toward the pole shoe until the push rod contacts the pole shoe. The second coil is energized to generate Φ 2 The magnitude of the magnetic field, in Φ 2 Under the action of the second permanent magnet group, the second permanent magnet group is magnetized and generates a repulsive force F with the first permanent magnet group. 2 , at this time the second coil is de-energized, and the repulsive force F 2 With spring force F 弹 Make the armature and push rod move in the opposite direction of the pole shoe until the armature contacts the metal frame of the coil;

[0013] The distance Δx that the armature moves forward during the time Δt when the first coil is energized, Δx≤δ, δ is the distance between the armature and the pole piece;

[0014] The spring assists in pushing the push rod and the armature back to their original position after the power is turned on. 弹 <F 1 .

[0015] Furthermore, the outer wall of the coil injection molded skeleton is provided with grooves at intervals, and the first coil and the second coil are placed in the grooves; the outer wall of the grooves on the coil injection molded skeleton is provided with a plurality of arc-shaped protrusions, and the arc-shaped protrusions are in contact with the first coil and the second coil.

[0016] Further, the first permanent magnet group includes a plurality of first permanent magnets evenly distributed around the circumference, and the second permanent magnet group includes a plurality of second permanent magnets evenly distributed around the circumference.

[0017] Furthermore, it also includes a first O-ring and a second O-ring, wherein the first O-ring is arranged between the housing and the coil injection-molded housing, close to one side of the coil injection-molded frame; wherein the outer wall of the coil injection-molded housing is provided with a first groove, and the first O-ring 4 is embedded in the first groove;

[0018] The second O-ring is arranged between the coil metal frame and the pole shoe, close to the other side of the coil injection molding frame; wherein the outer wall of the pole shoe is provided with a second groove, and the second O-ring is embedded in the second groove.

[0019] Furthermore, it also includes a push rod bushing, which is arranged in the pole shoe cavity and sleeved on the outside of the push rod, and the push rod slides axially along the push rod bushing.

[0020] Furthermore, it also includes a skeleton stopper sleeve embedded in the coil injection molding shell, the skeleton stopper sleeve is connected between the coil injection molding skeleton and the coil metal skeleton, wherein the inner wall of the skeleton stopper sleeve is matched with the outer wall of the coil metal skeleton, the outer wall of the skeleton stopper sleeve is provided with a plurality of grooves along the circumferential direction, and the coil injection molding skeleton is provided with a plurality of stoppers along the circumferential direction, and the plurality of stoppers are respectively matched with and connected in a plurality of grooves.

[0021] Furthermore, an annular groove is provided on the end of the coil injection-molded shell close to the plug, and an annular protrusion is provided on the outer wall of the end of the shell close to the plug, and the annular protrusion is matched and connected with the annular protrusion;

[0022] A groove is provided on the inner wall of the end of the housing away from the plug, and a protrusion is provided on the outer wall of the pole shoe, and the protrusion is matched and connected with the groove;

[0023] An annular plate is provided on the outer wall of the end of the shell away from the plug, and a plurality of holes evenly arranged in the circumferential direction are provided on the annular plate for realizing the installation and fixation of the electromagnet as a whole.

[0024] Furthermore, the first permanent magnet group is made of rare earth permanent magnet material, and the rare earth permanent magnet material includes neodymium iron boron or samarium cobalt.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The low-power high-speed opening and closing switch electromagnet provided by the present invention can realize high-speed opening and closing by powering on in a short time, while reducing energy loss. It has the advantages of miniaturization, energy saving, high-speed opening and closing, stable and reliable operation, etc. The electromagnet part of the present invention is suitable for various solenoid valve fields with its innovative structure and performance, such as automatic control systems, hydraulic and pneumatic circuits, etc.

[0027] 2. The low-power, high-speed on-off switch electromagnet provided by the present invention uses a Halbach array to combine permanent magnets in different directions, so that the magnetic field strength on one side is significantly enhanced, while the magnetic field lines on the other side are weakened or even close to zero. This design can generate a high and uniform magnetic field in a specific area, especially when using permanent magnets of the same volume, the magnetic field strength on the strong side surface can reach 100% of that of a traditional single permanent magnet. times.

[0028] 3. The low-power, high-speed on-off switch electromagnet provided by the present invention has a compact design that allows it to be installed smoothly in environments with limited space, and is particularly suitable for embedded systems and small devices. In addition, this solenoid valve can handle a variety of fluids, including corrosive fluids, oils, and high-viscosity fluids, expanding its application range, and can be used in a variety of industries from chemical industry to food processing.

[0029] 4. The low-power high-speed on-off switch electromagnet provided by the present invention can select different electromagnetic coils and valve calibers according to specific needs, and the modular design makes it adaptable to different flow and pressure requirements. In addition, the power consumption of the valve in standby mode is extremely low, and the intelligent current regulation technology is used to ensure the lowest energy consumption in actual work and reduce operating costs.

[0030] Based on the above reasons, the present invention can be widely promoted in the fields of automatic control systems, hydraulic and pneumatic circuits, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 The figure is a schematic diagram of the overall structure of a low-power, high-speed on-off switch electromagnet according to the present invention.

[0033] Figure 2 This is a cross-sectional view of the overall structure of a low-power, high-speed on-off switch electromagnet of the present invention.

[0034] Figure 3This is a Halbach principle diagram of a low-power, high-speed on-off switch electromagnet of the present invention.

[0035] Figure 4 This is a magnet arrangement diagram of a low-power, high-speed on-off switch electromagnet of the present invention.

[0036] Figure 5 The present invention is a cross-sectional view of the structure of a permanent magnet group of a low-power, high-speed on-off switch electromagnet.

[0037] Figure 6 This is a partial enlarged view of the coil injection-molded skeleton of a low-power, high-speed on-off switch electromagnet of the present invention.

[0038] Figure 7 The working principle of the low-power high-speed on-off switch electromagnet of the present invention is shown in FIG. Figure 1 .

[0039] Figure 8 The working principle of the low-power high-speed on-off switch electromagnet of the present invention is shown in FIG. Figure 2 .

[0040] Fig. 9 The working principle of the low-power high-speed on-off switch electromagnet of the present invention is shown in FIG. Figure 3 .

[0041] In the figure: 1. Coil injection molding shell; 2. Plug; 3. Shell; 4. First O-ring; 5. Coil injection molding skeleton; 6. First coil; 7. First permanent magnet group; 8. Second permanent magnet group; 9. Second coil; 10. Second O-ring; 11. Pole shoe; 12. Push rod bushing; 13. Spring; 14. Push rod; 15. Armature; 16. Skeleton stopper sleeve; 17. Coil metal skeleton. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] like Figure 1-Figure 9 As shown in the figure, the purpose of the present invention is to provide a low-power high-speed opening and closing switch electromagnet, which can realize high-speed opening and closing after being energized in a short time, while reducing energy loss. In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the following is a combination of the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig. 9 Provide explanation.

[0050] A low-power high-speed on-off switch electromagnet of the present invention is a switch electromagnet suitable for a hydraulic or pneumatic circuit, and the electromagnet can provide stable and low-power operation when it needs to be in an on or off state for a long time. The switch electromagnet includes a coil injection molding housing 1, a plug 2, a housing 3, a first O-ring 4, a coil injection molding skeleton 5, a first coil 6, a first permanent magnet group 7, a second permanent magnet group 8, a second coil 9, a second O-ring 10, a pole shoe 11, a push rod bushing 12, a spring 13, a push rod 14, an armature 15, a skeleton stopper 16 and a coil metal skeleton 17.

[0051] In the device structure of the present invention, the housing 3 is connected to the coil injection molded housing 1 in a standard manner. The plug 2 is located inside the left side of the coil injection molded housing 1 and is installed on the left side of the coil injection molded skeleton 5. The housing 3 is sealed and connected to the right side of the coil injection molded housing 1. The coil injection molded skeleton 5 is connected to the right side of the coil injection molded housing 1. The left end of the coil injection molded housing 1 has an annular groove, which cooperates with the annular protrusion at the left end of the housing 3. An annular plate is provided at the right tail of the housing 3, and four evenly arranged holes are provided between the annular plate and the housing 3 for the installation and fixation of the electromagnet as a whole; the left head of the coil injection molded housing 1 has a square-like protective cover to prevent electrical faults when the plug 2 is powered on, such as current leakage or short circuit. The material of the coil injection molded housing 1 has high heat resistance and can withstand the heat generated by the electromagnet during operation, ensuring the long-term stable operation of the electromagnet.

[0052] The coil is placed in the reserved space between the coil injection molded shell 1 and the coil injection molded frame 5, and the first coil 6 and the second coil 9 are installed at intervals between the outer wall of the coil injection molded frame 5 and the coil injection molded shell 1, wherein the outer wall of the coil injection molded frame 5 is provided with grooves at intervals, and the first coil 6 and the second coil 9 are placed in the grooves. The first coil 6 and the second coil 9 are connected to the plug 2 through the coil injection molded shell 1 by using the grooves of the coil injection molded frame 5, that is, the first coil 6 and the second coil 9 are connected to the coil injection molded shell 1 and the plug 2 through the grooves prefabricated on the coil injection molded frame 5.

[0053] The coil injection molding skeleton 5 is connected to the coil metal skeleton 17 , wherein the coil metal skeleton 17 is connected inside the coil injection molding skeleton 5 . The fixed connection between the coil injection molding skeleton 5 and the coil metal skeleton 17 provides a stable supporting structure for the coil.

[0054] The armature 15 is placed on the left side of the coil metal frame 17, and the pole shoe 11 is fixedly installed on the right side of the coil metal frame 17. The pole shoe 11 is arranged opposite to the armature 15 to form a closed magnetic circuit. The armature 15 is connected to the push rod 14 inside the coil metal frame 17 to form a movable electromagnetic component. The coil metal frame 17 not only supports the coil, but also allows the armature 15 to slide freely axially inside it; the armature 15 is connected to the push rod 14 through a direct connection, and the push rod 14 includes a special push rod cavity, and a spring 13 is configured in the cavity to provide the necessary buffering and reset functions. The two ends of the spring 13 are connected to the push rod 14 and the pole shoe 11 respectively. A cavity is provided inside the pole shoe 11 for installing the push rod bushing 12. The push rod bushing 12 is sleeved on the outside of the push rod 14, so that the push rod 14 can move smoothly along the axial direction of the push rod bushing 12. The push rod bushing 12 is used to reduce the friction of the push rod 14 in the cavity of the pole shoe 11, and improve the working reliability of the electromagnet.

[0055] The first permanent magnet group 7 and the second permanent magnet group 8 are embedded in the coil metal frame 17 to provide the required magnetic field environment for the entire device. The first permanent magnet group 7 includes a plurality of first permanent magnets evenly distributed around the circumference, and the second permanent magnet group 8 includes a plurality of second permanent magnets evenly distributed around the circumference. The first permanent magnet and the second permanent magnet are made of different materials and have opposite coercive force properties. In this embodiment, the arrangement of the plurality of first permanent magnets and the plurality of second permanent magnets is as follows: Figure 4 shown.

[0056] The skeleton stopper 16 is embedded in the coil injection molded housing 1, and the skeleton stopper 16 is located between the left side of the coil injection molded skeleton 5 and the left side of the coil metal skeleton 17. The skeleton stopper 16 can enhance the connection stability between the two and play a magnetic conductive role. The inner wall of the skeleton stopper 16 is matched and connected with the outer wall of the coil metal skeleton 17, and the outer wall of the skeleton stopper 16 is provided with multiple grooves along the circumferential direction. The coil injection molded skeleton 5 is provided with multiple blocks along the circumferential direction, and the multiple blocks are respectively matched and connected in the multiple grooves.

[0057] The first O-ring 4 is disposed between the housing 3 and the coil injection-molded housing 1, near the left side of the coil injection-molded frame 5. The coil injection-molded housing 1 is designed to include a first groove for positioning and retaining the first O-ring 4. The first O-ring 4 is located in the first groove of the outer wall of the coil injection-molded housing 1. The first O-ring 4 realizes a sealed connection between the housing 3 and the coil injection-molded housing 1.

[0058] The second O-ring 10 is between the coil metal frame 17 and the pole shoe 11, close to the right side of the coil injection frame 5. The second O-ring 10 is embedded in the second groove on the outer surface of the pole shoe 11 to ensure the sealing effect and realize the sealed connection between the coil metal frame 17 and the pole shoe 11.

[0059] The first O-ring 4 and the second O-ring 10 are respectively arranged at key sealing positions of the electromagnet to ensure the sealing performance of the electromagnet.

[0060] The present invention can reduce the energy loss of the switch electromagnet. The direction of the magnetic field of the weak coercive force permanent magnet is changed by electric current, thereby changing the direction of the magnetic force inside the electromagnet. The elastic force of the external spring 13 pushes the push rod 14 and the armature 15. Compared with the traditional switch electromagnet, the present invention can realize high-speed opening and closing of the electromagnet by powering on for a short time, saving energy and having high reliability.

[0061] The first coil 6 is energized to generate Φ 1 The magnitude of the magnetic field, in Φ 1 Under the action of, the armature 15 overcomes the inertial force and moves forward a distance Δx in the direction of the pole shoe 11 within Δt time. At this time, the first coil 6 is powered off, the first permanent magnet and the second permanent magnet are linked, and the second permanent magnet is linked to the first permanent magnet to generate an attractive force F 1 , gravity F 1Overcome the spring force F of spring 13 弹 The armature 15 and the push rod 14 move forward toward the pole shoe 11 until the push rod 14 contacts the pole shoe 11; the second coil 9 is energized to generate Φ 2 The magnitude of the magnetic field, in Φ 2 Under the action of the second permanent magnet, it is magnetized and generates a repulsive force F with the first permanent magnet. 2 At this time, the second coil 9 is de-energized, and the repulsive force F 2 With spring 13 elastic force F 弹 The armature 15 and the push rod 14 are moved forward in the opposite direction to the pole shoe 11 until the armature 15 contacts the coil metal frame 17. If the first coil 6 is initially energized in the opposite direction, the principle is similar to the above content.

[0062] The armature 15 moves a distance Δx during the time Δt when the first coil 6 is energized, Δx≤δ, where δ is the distance between the armature 15 and the pole piece 11.

[0063] The spring 13 is arranged in the cavity of the push rod 14 to assist in pushing the push rod 14 and the armature 15 to reset after the current is turned off. 弹 <F 1 .

[0064] Preferably, a groove is provided on the inner wall of the right end of the housing 3, and a protrusion is provided on the right outer wall of the pole shoe 11, and the protrusion and the groove are correspondingly matched and connected.

[0065] Preferably, the coil injection molding housing 1 is made of a material that is resistant to high temperatures and has good insulation properties, thereby ensuring the safety and stability of the electromagnet during operation.

[0066] Preferably, the first permanent magnet group 7 is made of rare earth permanent magnet materials such as neodymium iron boron (NdFeB) or samarium cobalt (SmCo) to achieve high magnetic energy product and strong coercive force. The second permanent magnet group 8 is made of a different material from the first permanent magnet group 7. The second permanent magnet group 8 requires the material to have a weak coercive force property. The material properties of the second permanent magnet group 8 are opposite to those of the first permanent magnet group 7. The material of the second permanent magnet group 8 can be aluminum nickel cobalt (AlNiCo), which has a lower coercive force and good temperature stability, and is suitable for applications requiring fast response and sensitive control.

[0067] Preferably, the spring 13 is made of highly elastic stainless steel or alloy to ensure that a stable elastic force is provided during the operation of the electromagnet.

[0068] Preferably, the plug 2 is made of a metal material with high electrical conductivity and corrosion resistance to ensure reliable connection between the electromagnet and the external circuit.

[0069] Preferably, Figure 6As shown, the main part of the coil injection molded skeleton 5 has an arc-shaped protrusion, which is convenient for fixing with the first coil 6 and the second coil 9. That is, the arc-shaped protrusion is designed at the position where the groove of the coil injection molded skeleton 5 contacts the coil, and the arc-shaped protrusion can enhance the mechanical strength of the skeleton and improve durability; the arc-shaped protrusion provides a stable fixing point for the coil, reduces the displacement of the coil during operation, and ensures the performance and reliability of the electromagnet; the arc-shaped protrusion helps to optimize the magnetic field distribution and make the magnetic field more uniform inside the electromagnet; the arc-shaped protrusion increases the heat dissipation area, improves the heat dissipation efficiency, helps to reduce the working temperature of the electromagnet, and prolongs the service life.

[0070] like Figure 3 As shown, the arrow represents the placement direction of the magnet pole N. Figure 3 The arrangement method in the figure shows the distribution of the magnetic field lines of the Halbach array group. The magnetic field strength on one side is much greater than that on the other side, which makes more effective use of the magnetic field of the magnet.

[0071] The magnetic poles N of a group of Halbach array permanent magnets are placed in the left, bottom, right, and top directions respectively. Figure 3 The principle, such as Figure 4 As shown, the magnetic field strength below the Halbach array is much greater than that above, which increases the driving force on the armature 15, thereby achieving the high-speed opening and closing function of the switch electromagnet.

[0072] according to Figure 4 The magnet arrangement in Figure 5 As shown, eight groups of magnets are evenly arranged along the circumferential direction in the coil metal skeleton 17, and the magnetic field strength of each group of magnets is concentrated inside, so that the armature 15 is subjected to eight times the magnetic force compared to one group of magnets, thereby greatly improving the driving force; after the second coil 9 is energized, the repulsive force generated between the first permanent magnet group 7 and the second permanent magnet group 8 is also increased, further ensuring the realization of the high-speed opening and closing function of the switch electromagnet.

[0073] It should be noted that the first permanent magnet group 7 (the second permanent magnet group 8) includes a plurality of permanent magnets, and the number of permanent magnets can be an even number such as 2, 4, 6, 8, etc., as long as they are symmetrical. Figure 3 shown. Figure 3 For permanent magnets according to Figure 4 The magnetic field after arrangement. In addition Figure 3 The number of permanent magnets can be 8 or an integer multiple of 4. Figure 4 is the specific arrangement of permanent magnets.

[0074] The present invention has the advantages of miniaturization, energy saving, high-speed opening and closing, stable and reliable operation, etc. The electromagnet part of the present invention is suitable for various solenoid valve fields, such as automatic control systems, hydraulic and pneumatic circuits, etc., due to its innovative structure and performance.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-power, high-speed on-off switch electromagnet, characterized in that: include: Coil injection molding shell (1), plug (2), shell (3), coil injection molding frame (5), first coil (6), first permanent magnet group (7), second permanent magnet group (8), second coil (9), pole shoe (11), push rod (14), armature (15), reset structure and coil metal frame (17); The plug (2) is located inside one side of the coil injection-molded housing (1), the housing (3) is sealedly connected to the outside of the other side of the coil injection-molded housing (1), the coil injection-molded frame (5) is connected to the inside of the other side of the coil injection-molded housing (1), the first coil (6) and the second coil (9) are installed at intervals between the outer wall of the coil injection-molded frame (5) and the coil injection-molded housing (1), and the first coil (6) and the second coil (9) are both connected to the plug (2); The coil metal frame (17) is connected to the inside of the coil injection frame (5), and the first permanent magnet group (7) and the second permanent magnet group (8) are embedded in the coil metal frame (17) at intervals; The armature (15) is placed on one side of the coil metal frame (17), and the pole shoe (11) is sealed and connected to the other side of the coil metal frame (17). The pole shoe (11) and the armature (15) are arranged opposite to each other to form a closed magnetic circuit. The push rod (14) is connected to the armature (15), and the reset structure is connected to the push rod (14) and the pole shoe (11). The armature (15) slides axially along the coil metal frame (17), and the push rod (14) slides axially along the pole shoe (11).

2. The low-power high-speed on-off switch electromagnet according to claim 1, characterized in that: The reset structure comprises a spring (13), wherein the spring (13) is located in the cavity of the push rod (14), one end of the spring (13) is connected to the push rod (14), and the other end is connected to the pole shoe (11); the spring (13) is made of highly elastic stainless steel or alloy.

3. The low-power high-speed on-off switch electromagnet according to claim 2, characterized in that: The first coil (6) is energized to generate a magnetic field of size Φ1. Under the action of Φ1, the armature (15) overcomes the inertial force and moves a distance Δx in the direction of the pole shoe (11) within a time period Δt. At this time, the first coil (6) is de-energized, the first permanent magnet group (7) and the second permanent magnet group (8) are linked, and the second permanent magnet group (8) generates an attractive force F1 with the first permanent magnet group (7) after being linked. The attractive force F1 overcomes the elastic force F1 of the spring (13). 弹 The armature (15) and the push rod (14) are moved forward in the direction of the pole shoe (11) until the push rod (14) contacts the pole shoe (11); the second coil (9) is energized to generate a magnetic field of size Φ2. Under the action of Φ2, the second permanent magnet group (8) is magnetized and generates a repulsive force F2 with the first permanent magnet group (7). At this time, the second coil (9) is de-energized, and the repulsive force F2 and the elastic force F2 of the spring (13) are combined. 弹 The armature (15) and the push rod (14) are moved forward in the opposite direction of the pole shoe (11) until the armature (15) contacts the coil metal frame (17); The armature (15) moves a distance Δx during a time Δt when the first coil (6) is energized, Δx≤δ, and δ is the distance between the armature (15) and the pole shoe (11); The spring (13) assists in pushing the push rod (14) and the armature (15) to reset after the power is turned off. 弹 <F1.

4. The low-power consumption, high-speed on-off switch electromagnet according to claim 1, characterized in that: The outer wall of the coil injection-molded skeleton (5) is provided with grooves at intervals, and the first coil (6) and the second coil (9) are placed in the grooves; the outer wall of the coil injection-molded skeleton (5) at the grooves is provided with a plurality of arc-shaped protrusions, and the arc-shaped protrusions are in contact with the first coil (6) and the second coil (9).

5. The low-power consumption, high-speed on-off switch electromagnet according to claim 1, characterized in that: The first permanent magnet group (7) comprises a plurality of first permanent magnets evenly distributed around the circumference, and the second permanent magnet group (8) comprises a plurality of second permanent magnets evenly distributed around the circumference.

6. The low-power consumption high-speed on-off switch electromagnet according to claim 1, characterized in that: It also comprises a first O-ring (4) and a second O-ring (10), wherein the first O-ring (4) is arranged between the housing (3) and the coil injection-molded housing (1), close to a side of the coil injection-molded frame (5); wherein the outer wall of the coil injection-molded housing (1) is provided with a first groove, and the first O-ring 4 is embedded in the first groove; The second O-ring (10) is arranged between the coil metal frame (17) and the pole shoe (11), close to the other side of the coil injection-molded frame (5); wherein the outer wall of the pole shoe (11) is provided with a second groove, and the second O-ring (10) is embedded in the second groove.

7. The low-power consumption, high-speed on-off switch electromagnet according to claim 1, characterized in that: It also comprises a push rod bushing (12), which is arranged in the cavity of the pole shoe (11) and sleeved on the outside of the push rod (14), and the push rod (14) slides axially along the push rod bushing (12).

8. The low-power consumption, high-speed on-off switch electromagnet according to claim 1, characterized in that: The invention also comprises a skeleton stopper sleeve (16) embedded in the coil injection molded shell (1), wherein the skeleton stopper sleeve (16) is connected between the coil injection molded skeleton (5) and the coil metal skeleton (17), wherein the inner wall of the skeleton stopper sleeve (16) is matched and connected with the outer wall of the coil metal skeleton (17), the outer wall of the skeleton stopper sleeve (16) is provided with a plurality of grooves along the circumferential direction, and the coil injection molded skeleton (5) is provided with a plurality of stoppers along the circumferential direction, and the plurality of stoppers are respectively matched and connected in the plurality of grooves.

9. The low-power consumption, high-speed on-off switch electromagnet according to claim 1, characterized in that: The coil injection molded housing (1) has an annular groove at its end near the plug (2), and the housing (3) has an annular protrusion on its outer wall at its end near the plug (2), and the annular protrusions are connected in a mating manner; The inner wall of the end of the housing (3) away from the plug (2) is provided with a groove, and the outer wall of the pole shoe (11) is provided with a protrusion, and the protrusion is matched and connected with the groove; An annular plate is provided on the outer wall of the end of the housing (3) away from the plug (2), and a plurality of holes evenly arranged in the circumferential direction are provided on the annular plate for realizing the installation and fixation of the electromagnet as a whole.

10. The low power consumption high speed on / off switch electromagnet according to claim 1, characterized in that: The first permanent magnet group (7) is made of rare earth permanent magnet material, which includes neodymium iron boron or samarium cobalt.

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