A switching device

Abstract

This application discloses a switching device, belonging to the field of power equipment technology. The switching device includes a housing and a drive assembly. The housing includes a first housing with an opening, a bottom wall opposite the opening, and a slot extending from the opening to the bottom wall, the extension direction of the slot being set as a first direction. The drive assembly includes a magnetic yoke with a magnetic attraction surface, independently inserted into the slot along the first direction, the magnetic attraction surface being parallel to the first direction. The magnetic yoke has a set of protrusions. The slot wall has a limiting groove for the protrusions to be inserted into. The protrusions have two sides facing opposite directions perpendicular to the magnetic attraction surface, and along the direction perpendicular to the magnetic attraction surface, the two sides are adapted to abut against different sides of at least one limiting groove, and the sides of the protrusions abutting against each other extend along the first direction. Therefore, the embodiments of this application solve the problem in the prior art where the installation accuracy of the internal magnetic yoke of the switching device is difficult to guarantee, affecting the performance of the switching device.

Description

Technical Field

[0001] This application belongs to the field of power equipment technology, and specifically relates to a switching device. Background Technology

[0002] Switching devices are widely used electronic control equipment that control the opening and closing states of circuits by controlling the coil current, thereby controlling the circuit's turn-off and turn-on. With the development of new energy sources and high-voltage systems such as smart grids, existing applications such as electric vehicles and portable devices place high demands on the performance of switching devices.

[0003] In existing technologies, the magnetic yoke in the magnetic circuit of a switching device is usually connected to other structures such as coil assemblies. The connection structure between the two is relatively complex and has high manufacturing costs. Furthermore, the installation accuracy of the magnetic yoke is greatly affected by the installation accuracy of other structures. Moreover, relying solely on other structures for fixation makes it difficult to guarantee the fixation strength. When the switching device is subjected to mechanical vibration or impact, it is prone to displacement, which can lead to changes in the air gap of the magnetic circuit, drift of contact parameters, or even product malfunction, and affect the immediacy and effectiveness of the switching device's closing or opening. Summary of the Invention

[0004] The purpose of this application is to provide a switching device that can solve the problem that the installation accuracy of the internal magnetic yoke in the prior art is difficult to guarantee, which affects the performance of the switching device.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application provide a switching device, including: a housing and a driving assembly. The housing includes a first housing, the first housing having an opening, a bottom wall opposite to the opening, and a slot extending from the opening to the bottom wall, the extension direction of the slot being set as a first direction; and the driving assembly includes a magnetic yoke, the magnetic yoke having a magnetic attraction surface for magnetic coupling, the magnetic yoke being independently inserted into the slot along the first direction, the magnetic attraction surface being parallel to the first direction, the magnetic yoke having a protrusion group, the slot wall having a limiting groove for the protrusion group to be inserted into, the protrusion group having two sides facing opposite directions along a direction perpendicular to the magnetic attraction surface, and along a direction perpendicular to the magnetic attraction surface, the two sides are adapted to abut against different sides of at least one limiting groove, and the sides of the protrusion group abutting against each other with the limiting groove both extend along the first direction.

[0006] Optionally, the magnetic yoke has at least two protrusions distributed along a direction perpendicular to the magnetic attraction surface, each protrusion forming a protrusion group; along the direction perpendicular to the magnetic attraction surface, each of the two protrusions has one side that abuts against the groove wall of the same limiting groove on different sides, and the sides of the protrusions that abut against the limiting grooves extend along a first direction; and / or, the two protrusions are respectively inserted into two limiting grooves, and along the direction perpendicular to the magnetic attraction surface, the two sides of each protrusion abut against the two sides of the corresponding limiting groove, and the sides of the protrusions that abut against the limiting grooves extend along a first direction.

[0007] Optionally, the magnetic yoke has a length direction, and at least one end of the magnetic yoke in the length direction is provided with a magnetic attraction surface.

[0008] Optionally, the magnetic yoke includes: a first plate extending in a direction perpendicular to the magnetic attraction surface, the width direction of which is located in a first direction; a second plate connected to one end of the first plate and perpendicular to the first plate, the second plate extending in a direction close to the moving magnetic guide assembly, and the second plate forming a protrusion, the second plate having a magnetic attraction surface formed on the side of the second plate facing the other end of the first plate; and a third plate connected to the other end of the first plate and perpendicular to the first plate, the third plate extending in a direction close to the moving magnetic guide assembly, the third plate forming a protrusion, the third plate having a magnetic attraction surface formed on the side of the third plate facing the second plate.

[0009] Optionally, the magnetic yoke includes: a fourth plate extending in a direction perpendicular to the magnetic attraction surface, the width direction of which is located in the first direction, a protruding protrusion on one side of the thickness direction of the fourth plate, and both end faces of the fourth plate along its extension direction being adapted to form a magnetic attraction surface.

[0010] Optionally, along the first direction, the protrusion on the fourth plate is provided on the side of the fourth plate near the opening, and one of the sides of the fourth plate near the bottom wall and the bottom wall is provided with a limiting protrusion and the other is provided with a limiting groove. The limiting protrusion and the limiting groove are inserted and matched, and along the direction perpendicular to the magnetic attraction surface, the two sides of the limiting protrusion are respectively abutted against the two sides of the limiting groove, and at least one pair of surfaces of the limiting protrusion and the limiting groove that abut against each other extend along the first direction.

[0011] Optionally, the fourth plate is a stamped part.

[0012] Optionally, along the thickness direction of the fourth plate, the thickness of the protrusion is less than or equal to two-thirds of the thickness of the fourth plate.

[0013] Optionally, along the thickness direction of the fourth plate, the insertion depth of the protrusion and the limiting groove is less than or equal to two-thirds of the thickness of the protrusion.

[0014] Optionally, the magnetic yoke has a protrusion, which forms a protrusion group. The two sides of the protrusion along the direction perpendicular to the magnetic attraction surface are respectively attached to the two groove walls of the corresponding limiting groove, and the sides of the protrusion and the limiting groove that are attached to each other both extend along the first direction.

[0015] Optionally, the protrusion extends in a direction perpendicular to the magnetic attraction surface, and the length of the protrusion in the direction perpendicular to the magnetic attraction surface is greater than or equal to half the length of the yoke in the direction perpendicular to the magnetic attraction surface.

[0016] Optionally, at least one side of the limiting groove that abuts against the protrusion group is an arc-shaped surface; or, at least one side of the limiting groove that abuts against the protrusion group is provided with a rib extending in a first direction, and the side of the rib that abuts against the protrusion group is an arc-shaped surface.

[0017] Optionally, the bottom wall is provided with a limiting part corresponding to the magnetic yoke. The side of each limiting part facing the opening is an abutting surface, and each abutting surface abuts against the magnetic yoke to limit the magnetic yoke in the direction from the opening toward the bottom wall.

[0018] Optionally, the magnetic yoke corresponds to at least two limiting parts, each limiting part corresponding to the magnetic yoke is distributed along a direction perpendicular to the magnetic attraction surface and each abutting surface is flush with the first direction, and the magnetic yoke abuts against each corresponding abutting surface.

[0019] Optionally, one of the magnetic yoke and the bottom wall is provided with a limiting protrusion and the other is provided with a limiting groove; the limiting protrusion is used to engage with the limiting groove, and along the direction perpendicular to the magnetic attraction surface, the two sides of the limiting protrusion are respectively attached to the two sides of the limiting groove, and at least one pair of the sides of the limiting protrusion and the limiting groove that are attached to each other extend along the first direction.

[0020] Optionally, the magnetic yoke has multiple limiting protrusions and limiting grooves, and each limiting protrusion and each limiting groove corresponds to one another.

[0021] Optionally, along a direction parallel to the magnetic attraction surface and perpendicular to the first direction, both sides of the slot wall are in contact with the corresponding magnetic yoke.

[0022] Optionally, along a direction perpendicular to the magnetic attraction surface and perpendicular to the first direction, at least one groove wall of the slot for engaging with the magnetic yoke is provided with at least one rib, the rib being adapted to abut against the magnetic yoke.

[0023] Optionally, the side of the rib that abuts the magnetic yoke is curved.

[0024] Optionally, the first housing further includes at least two retaining walls, each retaining wall being connected to the bottom wall, and the slot being formed by the enclosure of at least two retaining walls. Each retaining wall includes at least two cross-connected support walls that are perpendicular to the bottom wall, wherein part of the support walls are retaining walls, and the retaining walls constitute the groove walls of the corresponding slot.

[0025] Optionally, some of the support walls are reinforced with ribs, and each rib is cross-connected to the side of the corresponding baffle wall away from the slot.

[0026] Optionally, each reinforcing rib is vertically connected to the retaining wall.

[0027] Optionally, some of the supporting walls are connecting walls, which are connected to each reinforcing rib.

[0028] Optionally, the connecting wall is perpendicularly connected to the reinforcing rib.

[0029] Optionally, the drive assembly also includes a permanent magnet component, and the number of yokes is at least two, wherein the two yokes are a first yoke and a second yoke, respectively. The permanent magnet component is attached between the first yoke and the second yoke in a direction parallel to the magnetic attraction surface and perpendicular to the first direction so that the first yoke and the second yoke have opposite magnetisms. The permanent magnet component is attached between two retaining walls in a direction perpendicular to the magnetic attraction surface.

[0030] Optionally, the drive assembly further includes a coil assembly and a moving magnetic component. At least a portion of the moving magnetic component is slidably disposed on the inner periphery of the coil assembly. The magnetic yoke is located on the outer side of the coil assembly. The number of magnetic yokes is at least four, and each magnetic yoke constitutes a magnetic yoke assembly. The magnetic yoke assembly has two pairs of first magnetic yokes and second magnetic yokes with opposite magnetic properties. The two pairs of first magnetic yokes and second magnetic yokes are respectively disposed on both sides of the coil assembly along one of the radial directions of the coil assembly.

[0031] Optionally, the first yoke, the second yoke, and each retaining wall on both sides of the coil assembly are symmetrically arranged about the plane passing through the coil assembly and parallel to the first direction.

[0032] Optionally, at least one side of the slot wall that engages with the magnetic yoke is provided with a first adhesive wall, and a gap is formed between the first adhesive wall and the magnetic yoke, with the space between them used for injecting adhesive.

[0033] Optionally, along the direction from the opening to the bottom wall, the first adhesive wall includes at least two inclined walls connected in sequence, the inclined walls being set at an angle relative to the first direction; from the direction from the opening to the bottom wall, the angle between each inclined wall and the first direction gradually decreases.

[0034] Optionally, the drive unit further includes a permanent magnet component, and the number of yokes is at least two, wherein the two yokes are respectively a first yoke and a second yoke. Along a direction parallel to the magnetic attraction surface and perpendicular to the first direction, the permanent magnet component is fitted between the first yoke and the second yoke so that the first yoke and the second yoke have opposite polarities; the first adhesive wall that cooperates with the first yoke is located on the side of the first yoke opposite to the permanent magnet component, and the first adhesive wall that cooperates with the second yoke is located on the side of the second yoke opposite to the permanent magnet component.

[0035] Optionally, the drive assembly further includes a coil assembly and a moving magnetic component, at least a portion of which is slidably disposed on the inner periphery of the coil assembly, and the moving magnetic component and the coil assembly form an anti-rotation fit through non-rotational surface contact; or, the coil assembly is provided with a sliding hole; the moving magnetic component is provided with a sliding part that slides with the sliding hole; one of the sliding hole wall and the outer wall of the sliding plate portion is provided with an anti-rotation protrusion, and the other is provided with an anti-rotation groove; the anti-rotation protrusion and the anti-rotation groove extend along the operating direction of the moving magnetic component, and the anti-rotation protrusion and the anti-rotation groove form an anti-rotation fit through non-rotational surface contact.

[0036] Optionally, the drive assembly further includes a permanent magnet; the number of yokes is at least two, wherein the two yokes are a first yoke and a second yoke, respectively; the permanent magnet is connected between the first yoke and the second yoke so that the first yoke and the second yoke have opposite magnetic properties; when the coil assembly is energized, the two ends of the moving magnetic component can be magnetically coupled with the first yoke and the second yoke respectively and generate a magnetic attraction force, so that the moving magnetic component slides relative to the coil assembly to one side.

[0037] In this embodiment, the switching device includes a housing and a drive assembly. The first housing has a slot that extends along a first direction. The drive assembly includes a magnetic yoke. Therefore, during actual installation, the magnetic yoke can be inserted into the corresponding slot through the opening along the first direction. The slot can provide a guiding effect during the installation of the magnetic yoke, guiding the insertion and engagement of the magnetic yoke, reducing the deflection or skew of the magnetic yoke during installation. The installation method is simple, requiring no cooperation with other structures, and can be directly inserted and engaged with the first housing along the first direction, facilitating subsequent automated or semi-automated installation processes.

[0038] The magnetic yoke has a magnetic attraction surface for magnetic coupling. The magnetic yoke can be independently inserted into a slot along a first direction. The magnetic yoke has a set of protrusions. The slot wall has a limiting groove for each set of protrusions to be inserted. The set of protrusions has two sides facing opposite directions along the direction perpendicular to the magnetic attraction surface. Along the direction perpendicular to the magnetic attraction surface, these two sides are adapted to abut against different sides of at least one limiting groove. The sides of the protrusions and the limiting grooves that abut against each other both extend along the first direction, thereby limiting the installation of the magnetic yoke along the direction perpendicular to the magnetic attraction surface to ensure the accuracy of the position of the magnetic attraction surface of the magnetic yoke, improve the parallelism of the magnetic attraction surface, and make the magnetic conduction efficiency of the magnetic yoke and external magnetic components (such as moving magnetic components) high.

[0039] The magnetic yoke and its corresponding slot are engaged through a protrusion group and a limiting groove, forming a multi-point or multi-faceted interlocking engagement. When the magnetic yoke and slot are installed, the protrusion group is pushed by the wall of the limiting groove when inserted into it, causing the corresponding magnetic yoke to rotate around an axis parallel to the magnetic attraction surface and perpendicular to the first direction for fine adjustment until the protrusion group can smoothly enter the limiting groove. This corrects the installation posture of the magnetic yoke, ensuring that the magnetic yoke is in a straight position after insertion. This further enhances the limiting effect between the magnetic yoke and its corresponding slot. The straight posture of the magnetic yoke means that the insertion depth of both ends of the magnetic yoke along its length is consistent in the first direction. The magnetic yoke can straighten itself during installation, thereby improving the accuracy of the magnetic attraction surface position and the parallelism of the magnetic attraction surface. This reduces changes in the air gap of the magnetic circuit and drift of contact parameters, ensuring reliable and stable product function. It also helps to save on the cost of manual inspection and improve production efficiency.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0041] Figure 1 This is a three-dimensional structural diagram of the switching device portion of an embodiment of this application; Figure 2 This is a cross-sectional view of the switching device in the open state according to another embodiment of this application; Figure 3 This is a cross-sectional view of the switching device in the closed state according to another embodiment of this application; Figure 4 This is a three-dimensional schematic diagram of the disassembled structure of the switching device in one embodiment of this application; Figure 5 This is a three-dimensional schematic diagram of a portion of the structure of a switching device in one embodiment of this application; Figure 6 This is a schematic diagram of the first housing in one embodiment of this application from a certain perspective; Figure 7 This is a three-dimensional structural schematic diagram of the first magnetic yoke of the switching device in one embodiment of this application; Figure 8 This is a three-dimensional structural schematic diagram of the second magnetic yoke of the switching device in one embodiment of this application; Figure 9 This is a cross-sectional view of a switching device in one embodiment of this application from another perspective; Figure 10 yes Figure 2 Enlarged view of point A in the middle; Figure 11 This is an enlarged schematic diagram of a portion of the structure of a switching device in one embodiment of this application; Figure 12 yes Figure 9 Enlarged view of point B in the middle; Figure 13 This is an exploded structural diagram of the vacuum insulation assembly of the switching device in one embodiment of this application; Figure 14 This is an exploded structural diagram of a portion of the vacuum insulation assembly of a switching device in one embodiment of this application; Figure 15 This is a three-dimensional schematic diagram of the driving component of the switching device in one embodiment of this application from a certain perspective; Figure 16 yes Figure 15 A three-dimensional structural diagram of the central transmission component from a single perspective; Figure 17 This is an exploded view of the switching device in another embodiment of this application; Figure 18 This is a cross-sectional view of the switching device in the second housing open state according to an embodiment of this application; Figure 19 This is a cross-sectional view of a switching device in one embodiment of this application from another perspective; Figure 20 This is a cross-sectional view of the switching device in one embodiment of this application from another perspective; Figure 21 This is a three-dimensional structural schematic diagram of the first housing of the switching device in one embodiment of this application; Figure 22 This is a three-dimensional structural diagram of the second housing of the switching device in one embodiment of this application.

[0042] Icon labels: 100. Switching devices; 1. Drive assembly; 11. Coil assembly; 111. Anti-rotation protrusion; 12. Moving magnetic conductor assembly; 121. Magnetic suction part; 1211. Recess; 122. Moving iron core; 123. Armature; 124. Anti-rotation groove; 13. Magnetic yoke assembly; 131. First magnetic yoke; 1311. First plate; 1312. Second plate; 1313. Third plate; 132. Second magnetic yoke; 1321. Fourth plate; 133. Magnetic suction surface; 134. Protrusion group; 1341. Protrusion; 135. Limiting groove; 14. Permanent magnet; 15. Transmission component; 151. Pushing protrusion; 151a. Contact position; 152. Connecting rod; 153. Push plate; 154. Support plate; 155. Support rib; 2. Vacuum insulation assembly; 21. Moving contact assembly; 211. Moving conductive rod; 2111. Stepped surface; 2112. First mating structure; 212. Limiting assembly; 2121. Limiting block; 2122. Gasket; 213. Elastic assembly; 2131. First elastic element; 2132. Second elastic element; 214. Fixing element; 2141. Mounting hole; 21411. First anti-rotation structure; 2142. Boss; 2143. Second anti-rotation structure; 21431. Second anti-rotation surface; 215. Threaded connector; 2151. Limiting surface; 216. Bellows; 217. Moving lead-out terminal; 22. Static contact assembly; 221. Static conductive rod; 23. Housing; 24. Connecting terminal; 25. Electrical connector; 251. First connecting piece; 252. Second connecting piece; 3. Shell; 31. First shell; 311. Bottom wall; 3111. Limiting protrusion; 3112. Abutting surface; 312. Slot; 3121. Limiting groove; 31211. Rib; 31211a. Arc-shaped surface; 3122. First adhesive wall; 31221. Sloping wall; 313. Retaining wall; 3131. Supporting wall; 31311. Retaining wall; 31312. Reinforcing rib; 31313. Connecting wall; 314. First partition wall; 3141. First groove; 31411. First adhesive receiving groove; 315. Receiving groove; 316. Side wall; 3161. First side wall; 31 611. Rib; 3162. First inclined surface; 317. Third partition wall; 3171. Third groove; 32. Second shell; 321. Cover plate; 3211. Second inclined surface; 322. Second partition wall; 3221. Second groove; 32211. Second adhesive receiving groove; 323. Fourth partition wall; 3231. Fourth groove; 33. Isolation structure; 331. Through hole; 332. Sealing groove; 333. Adhesive filling groove; 34. Connecting structure; 341. Partition wall; 342. Connecting groove; 343. Second mating structure; 35. Positioning wall; 351. Positioning hole; 36. Adhesive dispensing groove; X, the first direction; Y, the second direction. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0045] Switching devices are widely used electronic control equipment that control the opening and closing states of circuits by controlling the coil current, thereby controlling the circuit's turn-off and turn-on. With the development of new energy sources and high-voltage systems such as smart grids, existing applications such as electric vehicles and portable devices place high demands on the performance of switching devices.

[0046] In existing technologies, the magnetic yoke in the magnetic circuit of a switching device is usually connected to other structures such as coil assemblies. The connection structure between the two is relatively complex and has high manufacturing costs. Furthermore, the installation accuracy of the magnetic yoke is greatly affected by the installation accuracy of other structures. Moreover, relying solely on other structures for fixation makes it difficult to guarantee the fixation strength. When the switching device is subjected to mechanical vibration or impact, it is prone to displacement, which can lead to changes in the air gap of the magnetic circuit, drift of contact parameters, or even product malfunction, and affect the immediacy and effectiveness of the switching device's closing or opening.

[0047] Therefore, one of the core concepts of this application embodiment is that when the magnetic yoke and the slot are installed together, the protrusion group will be pushed by the wall of the limiting slot when it is inserted into the limiting slot, so that the corresponding magnetic yoke rotates around an axis parallel to the magnetic attraction surface and perpendicular to the first direction for fine adjustment until the protrusion group can smoothly enter the limiting slot, thereby correcting the installation posture of the magnetic yoke so that the magnetic yoke is in the correct posture after it is inserted into the slot. The installation method of the magnetic yoke is simple, and the magnetic yoke is self-aligned during the installation process, which improves the accuracy of the installation position of the magnetic attraction surface of the magnetic yoke and the parallelism of the magnetic attraction surface. It also helps to save the cost of manual inspection and improve production efficiency.

[0048] This application provides a switching device that can solve the problems of complex internal structure, easy error in the installation process of the internal structure, and poor practical effect after installation in the prior art.

[0049] The switching devices provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0050] Switching devices are used to turn circuits on or off. Switching devices include relays, circuit breakers, and other equipment. This application does not limit the scope of the application. The following embodiments use relays as an example to illustrate the relevant structure and function of the switching devices in this application. Examples are as follows.

[0051] Figure 1 This is a three-dimensional structural diagram of a portion of the switching device 100 in one embodiment of this application, as shown below. Figure 1 As shown, the switching device 100 includes a drive assembly 1 and a vacuum insulation assembly 2.

[0052] The drive assembly 1 may include a drive mechanism and a transmission component 15. Specifically, the drive mechanism may include a coil assembly 11, a moving magnetic conductor assembly 12, a magnetic yoke assembly 13, and a permanent magnet component 14. The coil assembly 11 can be energized to achieve forward or reverse excitation, and de-energization stops excitation. At least a portion of the moving magnetic conductor assembly 12 is slidably disposed on the inner circumference of the coil assembly 11. The energization and de-energization of the coil assembly 11 causes the two ends of the moving magnetic conductor assembly 12 to generate opposite magnetic fields or become unmagnetized. Furthermore, at least a portion of the moving magnetic conductor assembly 12 is located outside the coil assembly 11, facilitating contact and engagement or limiting cooperation with the magnetic yoke assembly 13.

[0053] In some embodiments, the yoke assembly 13 includes a yoke. In some exemplary embodiments, the number of yokes is at least two, specifically defined as a first yoke 131 and a second yoke 132, wherein the first yoke 131 and the second yoke 132 have opposite magnetic properties. In this application, the term "yoke" generally refers to a yoke structure used to form a magnetic circuit and guide magnetic flux. In some embodiments, the yoke may be a first yoke; in other embodiments, the yoke may be a second yoke. The first yoke and the second yoke described below are specific examples of "yoke," but the "yoke" in this application is not limited thereto.

[0054] The yoke assembly 13 is located outside the coil assembly 11 and is separated from it. The yoke assembly 13 may include a first yoke 131 and a second yoke 132. The first yoke 131 and the second yoke 132 have opposite magnetic properties through their connection with the permanent magnet 14. Therefore, when the coil assembly 11 is energized, the electromagnetic field it generates can be superimposed on the magnetic field formed by the permanent magnet 14. Furthermore, the two ends of the moving magnetic component 12 are magnetically coupled to the first yoke 131 and the second yoke 132, which have opposite magnetic properties, respectively. This causes the moving magnetic component 12 to be simultaneously subjected to magnetic driving forces at both ends in the sliding direction. The moving magnetic component 12 is simultaneously subjected to attractive and pushing forces at both ends in the sliding direction, and the attractive and pushing forces are both along the same direction, thus forming a resultant force along one direction, causing the moving magnetic component 12 to slide relative to the coil assembly 11 along this direction. Compared with the conventional switching device 100 in the prior art, the moving magnetic component 12 and the magnetic yoke component 13 in the switching device 100 of this application can utilize the magnetic flux generated by the coil component 11 more efficiently, so that the moving magnetic component 12 can obtain a greater driving force during the sliding process relative to the coil component 11.

[0055] In some embodiments, a large disconnection gap (i.e., contact gap) is required between the moving contact component 21 and the stationary contact component 22 of the vacuum insulation component 2. The driving component 1 in this embodiment can provide a fast and reliable driving force to enable the moving contact component 21 and the stationary contact component 22 to close or open quickly and reliably. When the gap between the moving contact component 21 and the stationary contact component 22 of the vacuum insulation component 2 is kept at a certain size, compared with other embodiments, this embodiment can configure a smaller magnetic gap and a smaller size of the driving component 1 to meet the closing and opening requirements of the moving contact component 21 and the stationary contact component 22, thereby achieving miniaturization of the switching device 100.

[0056] Furthermore, since the yoke assembly 13 is located outside the coil assembly 11, the arrangement of the yoke assembly 13 is not limited by the size of the coil assembly 11. At least a portion of the moving magnetic component 12 is located on the inner periphery of the coil assembly 11, meaning that a portion of the moving magnetic component 12 is also located outside the coil assembly 11. Therefore, the portion of the moving magnetic component 12 located outside the coil assembly 11 is also not limited by the size of the coil assembly 11. Thus, the yoke assembly 13 and the moving magnetic component 12 located outside the coil assembly 11 can change their corresponding magnetic attraction areas according to actual needs without occupying the space of the coil assembly 11. This ensures that when the number of turns of the coil assembly 11 is increased to improve the magnetic driving force, the corresponding size will not increase too much, thus ensuring that the switching device 100 can maintain a small size.

[0057] The switching device 100 also includes a housing 3, in which the drive assembly 1 and the vacuum insulation assembly 2 are both installed. The housing 3 provides installation space for the drive assembly 1 and the vacuum insulation assembly 2 and protects the drive assembly 1 and the vacuum insulation assembly 2, thereby reducing the interference of the external environment on the drive assembly 1 and the vacuum insulation assembly 2.

[0058] Please refer to Figure 2 The vacuum insulation component 2 may include a moving contact component 21 and a stationary contact component 22. Part of the moving contact component 21 is disposed in a vacuum environment, and part of the stationary contact component 22 is also disposed in a vacuum environment. It is understood that the vacuum environment has strong insulation properties, which can improve the insulation strength and withstand voltage between the moving contact component 21 and the stationary contact component 22. This allows the moving and stationary components and the moving contact component 21 to adapt to different voltage environments and are less prone to breakdown and arcing, thereby reducing the risk of combustion or explosion.

[0059] Specifically, the vacuum insulation assembly 2 also includes a housing 23, wherein at least a portion of the moving contact assembly 21 and the stationary contact assembly 22 are installed inside the housing 23. The housing 23 is formed by a ceramic vacuum tube and two sealed end caps. The two ends of the housing 23 are respectively sealed to the moving contact assembly 21 and the stationary contact assembly 22, so that the interior of the housing 23 is a vacuum insulation environment. The moving contact assembly 21 is movably mounted on the housing 23. The moving contact assembly 21 includes a bellows 216 and a moving conductive rod 211. The bellows 216 connects the moving conductive rod 211 and the housing 23 respectively. The bellows 216 can contract or expand to follow the movement of the moving conductive rod 211 while maintaining the vacuum environment inside the housing 23. The moving conductive rod 211 is made of a conductive metal material, such as copper or copper alloy. The bellows 216 is made of, but is not limited to, stainless steel. The stationary contact assembly 22 includes a stationary conductive rod 221. The moving conductive rod 211 is driven directly or indirectly by the moving magnetic component 12 to move closer to or away from the stationary conductive rod 221. When the ends of the moving conductive rod 211 and the stationary conductive rod 221 are in contact within the housing 23, the switching device 100 is turned on. When the ends of the moving conductive rod 211 and the stationary conductive rod 221 are spaced apart within the housing 23, the switching device 100 is turned off.

[0060] The moving contact assembly 21 also includes an elastic component 213. When the coil assembly 11 is energized and positively excited, the moving magnetic component 12 directly or indirectly drives the moving conductive rod 211 to move in the forward direction. The elastic component 213 is used to accumulate elastic potential energy. When the coil assembly 11 is de-energized or reversely excited, the elastic component 213 can release the elastic potential energy and drive the moving conductive rod 211 of the moving contact assembly 21 to move in the reverse direction to the disconnected position. The moving conductive rod 211 can also drive the moving magnetic component 12 to move in the reverse direction until the moving magnetic component 12 moves to the limit position. Optionally, when the moving magnetic component 12 moves to the limit position, the elastic component 213 can still be configured to have an elastic force to resist the pushing conductive rod 211 so that the moving conductive rod 211 is kept in the disconnected position and the moving magnetic component 12 is kept in the limit position.

[0061] In some embodiments, by providing an elastic component 213, when the coil assembly 11 is not energized, the elastic component 213 pushes against the conductive rod 211 to keep the moving conductive rod 211 in the open position, thereby enabling the vacuum insulation assembly 2 to remain in the normally open state to meet specific scenario requirements. Moreover, the continuous contact of the elastic component 213 to maintain the normally open state has good mechanical stability, good insulation and high withstand voltage between the stationary contact assembly 22 and the moving contact assembly 21, and the coil assembly 11 in the drive assembly 1 does not need to be energized to maintain the open state, further reducing the energy consumption of the switching device 100.

[0062] In other embodiments, when the coil assembly 11 is energized, the electromagnetic field it generates can be superimposed on the magnetic field formed by the permanent magnet 14. Furthermore, the two ends of the moving magnetic component 12 are magnetically coupled to the first yoke 131 and the second yoke 132, which have opposite magnetic properties, respectively. This causes the moving magnetic component 12 to be simultaneously subjected to magnetic driving forces at both ends in the sliding direction. The moving magnetic component 12 is simultaneously subjected to both attractive and pushing forces at both ends in the sliding direction, and both attractive and pushing forces are along the same direction, thus forming a resultant force along one direction, causing the moving magnetic component 12 to slide relative to the coil assembly 11 along that direction. Compared to conventional switching devices 100 in the prior art, the bipolar drive between the moving magnetic component 12 and the yoke component 13 in the switching device 100 of this application can more efficiently utilize the magnetic flux generated by the coil component 11, enabling the moving magnetic component 12 to obtain a greater driving force during the sliding process relative to the coil component 11. Therefore, the moving magnetic component 12 can effectively drive the moving contact component 21 to move relative to the stationary contact component 22. In addition, under the dual magnetic field support of the coil component 11 and the permanent magnet 14, the moving magnetic component 12 can obtain a strong driving force in at least one direction of movement, thereby providing a reliable driving force for the moving contact component 21, ensuring that the moving contact component 21 can quickly close and open with the stationary contact component 22 in a vacuum environment, reducing the burning time of the arc on the contact surface of the moving contact component 21 and the stationary contact component 22, and improving the electrical life and operational reliability of the switching device 100.

[0063] Furthermore, when the contact gap between the stationary contact component 22 and the moving contact component 21 of the vacuum insulation component 2 remains constant, the high withstand voltage between the stationary contact component 22 and the moving contact component 21 is due to the good insulation performance of the vacuum environment. Therefore, the solution of this application can minimize the contact gap between the stationary contact component 22 and the moving contact component 21 while ensuring the withstand voltage, thereby reducing the magnetic gap of the drive component 1, reducing magnetic loss, and increasing the driving force of the drive component 1. This allows sufficient driving force to be maintained even when the size of the coil component 11 is reduced to compress the overall volume of the switching device 100. The magnetic driving force generated by the excitation of the coil component 11 can still ensure that the moving magnetic component 12 can operate quickly, reliably, and accurately, thereby meeting the requirements for circuit switching. At the same time, in some embodiments, the configuration of the permanent magnet component 14 can also meet the requirement of reducing power consumption while reducing the size of the coil component 11. Moreover, when the magnetic field generated by the permanent magnet component 14 and the magnetic field generated by the coil component 11 are superimposed, the driving effect of the electromagnetic drive system of the drive component 1 of this application can be further optimized.

[0064] In one embodiment of this application, the maximum opening gap (i.e., contact gap) between the moving contact component 21 and the stationary contact component 22 is greater than or equal to 6 mm, which can effectively resist lightning surges.

[0065] In some embodiments, please refer to Figure 2 The moving magnetic conductor assembly 12 has magnetically attracted portions 121 at both ends, which are respectively adapted for magnetic coupling with the first magnetic yoke 131 and the second magnetic yoke 132. Each magnetically attracted portion 121 is located on the outer side of both ends of the coil assembly 11. It should be noted that in this embodiment, the first magnetic yoke 131 and the second magnetic yoke 132 are also located on the outer side of the coil assembly 11. When the magnetically attracted portions 121 at both ends of the moving magnetic conductor assembly 12 extend to both ends of the coil assembly 11 in the axial direction and are located on the outer side of the coil assembly 11, compared with the case where the magnetically attracted portions 121 are located inside the coil assembly 11, the occupancy of the moving magnetic conductor assembly 12 on the internal space of the coil assembly 11 can be minimized. Thus, with the same number of winding turns, the size of the coil assembly 11 is reduced, less material is used, which is conducive to reducing the overall volume of the magnetic circuit. Furthermore, the area of ​​the magnetically attracted portion 121 is more freely set. The area of ​​the magnetically attracted portion 121 can be increased as needed to improve magnetic efficiency without increasing the volume of the coil assembly 11, which makes it easier to realize the miniaturization design of the switching device 100 as a whole.

[0066] Please refer to Figure 2 and Figure 3 The magnetic attraction parts 121 are disposed at both ends of the moving magnetic conductor assembly 12 and located outside the coil assembly 11, so that during the sliding process of the moving magnetic conductor assembly 12, the magnetic attraction parts 121 at both ends of the moving magnetic conductor assembly 12 always maintain a spatial correspondence with the first magnetic yoke 131 and the second magnetic yoke 132, respectively. When the coil assembly 11 is energized, the two sides of the moving magnetic conductor assembly 12 have opposite magnetic properties, and the permanent magnet 14 makes the first magnetic yoke 131 and the second magnetic yoke 132 have opposite magnetic properties. When the moving magnetic conductor assembly 12 slides to one side, for example, when it slides upward, the upper magnetic attraction part 121 and the upper end of the first magnetic yoke 131 generate a magnetic attraction force, and as the magnetic air gap gradually decreases, the magnetic attraction force gradually increases, and the upper magnetic attraction part 121 and the upper end of the second magnetic yoke 132 generate a magnetic repulsion force. As the air gap gradually increases, the magnetic repulsion gradually decreases, while the lower magnetic attraction part 121 and the lower end of the second magnetic yoke 132 generate magnetic attraction. As the air gap gradually decreases, the magnetic attraction gradually increases, while the lower magnetic attraction part 121 and the lower end of the first magnetic yoke 131 generate magnetic repulsion. As the air gap gradually increases, the magnetic repulsion gradually decreases, and the moving magnetic component 12 is generally subjected to an upward force, thereby pushing the moving magnetic component 12 to slide upward. Conversely, when the coil component 11 is reverse-energized, it moves in the opposite direction. This will not be elaborated here. Of course, it is worth noting that in this embodiment, since the vacuum insulation component 3 mainly uses the elastic component 213 to achieve reverse movement and disconnection, the coil component 11 does not need to be reverse-energized.

[0067] Furthermore, the magnetic attraction part 121 is located on the outside of the coil assembly 11, which makes it easy to observe and judge the flatness and attraction status of the magnetic attraction part 121, and facilitates the subsequent inspection and maintenance of the switching device 100.

[0068] In some embodiments, please refer to Figure 2 and Figure 3 The moving magnetic conductor assembly 12 may include a moving iron core 122 and two armatures 123. The moving iron core 122 is slidably disposed on the inner periphery of the coil assembly 11. Each armature 123 is connected to both ends of the moving iron core 122. Each armature 123 is located on the outer side of the coil assembly 11 and is provided with a magnetic attraction part 121.

[0069] In this embodiment, armatures 123 are connected to both ends of the moving iron core 122, and the armatures 123 are located on the outside of the coil assembly 11. Their size and shape are not limited by the inner circumferential space of the coil assembly 11. The independent armatures 123 can be provided with a larger magnetic attraction area, thereby increasing the effective magnetic coupling area with the magnetic yoke assembly 13, reducing the magnetic resistance in the magnetic circuit, and the armatures 123 at both ends can respectively magnetically engage with the first magnetic yoke 131 and the second magnetic yoke 132. Specifically, when the coil assembly 11 is energized, the magnetic attraction portions 121 of the armatures 123 at both ends of the moving iron core 122 have different magnetic properties, thereby magnetically engaging with the first magnetic yoke 131 and the second magnetic yoke 132 respectively to generate driving force.

[0070] Among them, the moving iron core 122 can slide back and forth along the inner circumference of the coil assembly 11, which plays a guiding role.

[0071] In some embodiments, the moving magnetic core 12 and the coil assembly 11 form an anti-rotation fit through non-rotational surface contact. Specifically, the outer periphery of the moving iron core 122 and the inner periphery of the coil assembly 11 form an anti-rotation fit through non-rotational surface contact. The non-rotational surface includes irregular surfaces, prismatic surfaces, or spline surfaces, etc., which are not formed by rotating a straight line or curve around a central axis. This application is not limited to this. The outer periphery of the moving iron core 122 and the inner periphery of the coil assembly 11 are both set as non-rotational surfaces, thereby effectively restricting relative rotation between them around the axial direction.

[0072] In some embodiments, the moving magnetic component 12 is used to connect with the transmission component 15, and the transmission component 15 drives the movement of the moving contact component 21. Therefore, the moving magnetic component 12 and the coil component 11 are anti-rotationally coupled, so that the moving magnetic component 12 can stably output displacement in one direction, so that the transmission component 15 connected to it can move stably in one direction, ensuring that the transmission component 15 can accurately and stably drive the movement of the moving contact component 21.

[0073] In other embodiments, please refer to Figure 9The coil assembly 11 is provided with a sliding hole, and the moving magnetic component 12 is provided with a sliding part that slides with the sliding hole. One of the walls of the sliding hole and the outer wall of the sliding part is provided with an anti-rotation protrusion 111, and the other is provided with an anti-rotation groove 124. At least one of the anti-rotation protrusion 111 and the anti-rotation groove 124 extends along the operating direction of the moving magnetic component 12, and the anti-rotation protrusion 111 and the anti-rotation groove 124 form an anti-rotation fit through non-rotational surface contact. That is, the sliding part includes a moving iron core 122, wherein the anti-rotation protrusion 111 and the anti-rotation groove 124 anti-rotate with each other, thereby restricting the rotation of the moving iron core 122 relative to the coil assembly 11 about its axial direction. At least one of the anti-rotation protrusion 111 and the anti-rotation groove 124 extends along the operating direction of the moving magnetic component 12. Therefore, the anti-rotation protrusion 111 and the anti-rotation groove 124 guide each other and do not affect the movement of the moving iron core 122 relative to the coil assembly 11 in the operating direction. Furthermore, the anti-rotation fit between the coil assembly 11 and the moving magnetic component 12 ensures that the moving contact component 21 maintains a stable orientation during movement, which is beneficial to the alignment accuracy between the moving and stationary contacts. It also helps protect the sealing elements such as the bellows 216 connected to the moving conductive rod 211 in the vacuum insulation component 2 from torsional stress. In the example provided in this embodiment, the sliding part is partially composed of the moving iron core 122, the outer wall of which is provided with an anti-rotation protrusion 111, and the sliding hole wall of the coil assembly 11 is provided with an anti-rotation groove 124.

[0074] In some embodiments, the moving iron core 122 is limited to sliding only along its axial direction relative to the coil assembly 11, and cannot slide around its axial direction relative to the coil assembly 11. It is understood that when the moving iron core 122 is about to deflect due to an external force, the fixed coil assembly 11 and its inner circumference can restrict the rotation of the moving iron core 122, thereby ensuring that the armature 123 connected to the moving iron core 122 can move stably along the direction of motion without deflection, so as to provide a more stable driving force for the moving contact assembly 21 while protecting the internal structure from damage.

[0075] In some embodiments, the armature 123 and the moving iron core 122 are separately configured, while the armature 123 and the moving iron core 122 are fixedly connected. During assembly, the moving iron core 122 can be easily passed through the coil assembly 11 and then connected to the armatures 123 at both ends. It is also easier to independently adjust the mating gap between the moving iron core 122 and the coil assembly 11, as well as the air gap between the armature 123 and the first magnetic yoke 131 and the second magnetic yoke 132, thereby reducing the impact of accumulated machining tolerances on driving performance.

[0076] In some embodiments, the two ends of the moving magnetic component 12 are adapted to engage with the first magnetic yoke 131 and / or the second magnetic yoke 132 respectively when the moving contact component 21 and the stationary contact component 22 are in the closed position; and / or, the two ends of the moving magnetic component 12 are adapted to engage with the first magnetic yoke 131 and the second magnetic yoke 132 respectively when the moving contact component 21 and the stationary contact component 22 are in the open position. Specifically, when the moving contact component 21 and the stationary contact component 22 are in the closed or open position, the moving magnetic component 12 can generate a magnetic attraction force with the first magnetic yoke 131 and the second magnetic yoke 132 based on the magnetic field provided by the permanent magnet 14 and maintain a stable position, thereby ensuring the stability of the moving contact component 21 and the stationary contact component 22 in the closed or open position. In particular, when the vacuum insulation component 2 is required to be normally closed or normally open, the stability of the vacuum insulation component 2 in the normally closed or normally open state can be ensured.

[0077] It is understood that the switching device 100 in this application embodiment can be kept in a normally closed or normally open state according to user needs.

[0078] When the switching device 100 is set to the normally closed state according to user requirements, the moving magnetic component 12 drives the moving contact component 21 to move in the direction close to the stationary contact component 21 until the two ends of the moving magnetic component 12 are attracted to one end of the first magnetic yoke 131 and one end of the second magnetic yoke 132, so that the moving contact component 21 and the stationary contact component 22 are in the closed position, and the normally closed state of the vacuum insulation component 2 is stably realized.

[0079] When the switching device 100 is set to the normally open state according to user requirements, the two ends of the moving magnetic component 12 are attracted to the other end of the first magnetic yoke 131 and the other end of the second magnetic yoke 132, respectively. In some embodiments, the elastic component 213 is used to further drive the moving magnetic component 12 to move in a direction away from the stationary contact component 22, and the elastic component 213 also drives the moving conductive rod 211 to move, so that the moving contact component 21 and the stationary contact component 22 are in the disconnected position, thereby stably realizing the normally open state of the vacuum insulation component 2.

[0080] In some embodiments, the switching device 100, by forward energizing or reverse energizing / de-energizing the coil assembly 11, enables the two ends of the moving magnetic component 12 to be attracted to different ends of the first magnetic yoke 131 and the second magnetic yoke 132 respectively, and the moving magnetic component 12 can move in the direction of approaching or moving away from the stationary contact component 22 respectively, thereby realizing the switching between the moving contact component 21 and the stationary contact component 22 in the open position or the closed position.

[0081] Please refer to Figure 4The switching device 100 also includes a housing 3, wherein the housing 3 is made of plastic. The plastic housing 3 has good insulation properties, and plastic can be integrally injection molded, which facilitates the production and manufacturing of the housing 3. The housing 3 includes a first housing 31, which has an opening. A first magnetic yoke 131 and a second magnetic yoke 132 are respectively inserted into the first housing 31 through the opening, and the first magnetic yoke 131 and the second magnetic yoke 132 are spaced apart. Specifically, the first housing 31 is provided with an opening and has an internal space. The first magnetic yoke 131 and the second magnetic yoke 132 are respectively inserted into the interior of the first housing 31 through the opening. The insertion and engagement simplifies the assembly process of the magnetic yoke assembly 13 and the first housing 31. In some embodiments, for the assembly of the switching device 100, the positioning and installation of structures such as the coil assembly 11 and the moving magnetic conductor assembly 12 can be completed first, and then the first magnetic yoke 131 and the second magnetic yoke 132 can be inserted into the preset installation position from the opening. This method of independent insertion and installation of each component reduces the problem of mutual interference between components during the assembly process, which is conducive to realizing an automated or semi-automated assembly process and improving production efficiency and assembly consistency.

[0082] Furthermore, the internal insertion structure of the first housing 31 can constrain and position the installation positions of the first magnetic yoke 131 and the second magnetic yoke 132, determine the relative positional relationship between the first magnetic yoke 131 and the second magnetic yoke 132, and also determine the relative positional relationship between the first magnetic yoke 131 and the second magnetic yoke 132 relative to the permanent magnet 14 and the moving magnetic conductive assembly 12. Since the permanent magnet 14 is connected between the first magnetic yoke 131 and the second magnetic yoke 132, and the moving magnetic conductive assembly 12 needs to be magnetically coupled with the first magnetic yoke 131 and the second magnetic yoke 132 respectively, the spacing between the first magnetic yoke 131 and the second magnetic yoke 132 and their spatial positional accuracy relative to the coil assembly 11 will affect the air gap length and magnetic coupling efficiency of the magnetic circuit. By inserting and positioning the first magnetic yoke 131 and the second magnetic yoke 132 through the first housing 31, the spatial position stability of the magnetic yoke assembly 13 is maintained through the insertion and engagement, reducing displacement caused by external vibration or mechanical impact, thereby improving the performance of the drive assembly 1.

[0083] In some embodiments, the housing 3 is made of plastic. When the drive mechanism is required to be large to meet the high driving force requirements, the corresponding structure in the housing 3 for installing and positioning the drive mechanism is also large to facilitate reliable installation and positioning of the drive mechanism. However, deformation is inevitable during the molding process of the plastic housing 3. The larger the structure used for installation and positioning, the greater the degree of deformation of the housing 3. Therefore, if the magnetic yoke assembly 13 is connected to the coil assembly 11 and / or the moving magnetic conductor assembly 12 and then installed in the housing 3, the installation difficulty increases. Once the installation and positioning structure of the housing 3 deforms, the installation failure rate is higher, resulting in a high product scrap rate and unstable product quality.

[0084] In this embodiment, the internal insertion structure of the first housing 31 can be used to install the first magnetic yoke 131, the second magnetic yoke 132, the coil assembly 11, and the moving magnetic conductor assembly 12 respectively. Compared with the installation drive mechanism, this reduces the installation difficulty. Each component has a corresponding independent installation and positioning structure, which facilitates the installation of a single component without affecting other components. For example, installing the first magnetic yoke 131 will not affect the installation of the second magnetic yoke 132. Even if the first magnetic yoke 131 or the corresponding structure for installing the first magnetic yoke 131 is deformed during the production process, the impact will only be concentrated on the installation of the first magnetic yoke 131 and will not affect the installation of other components such as the second magnetic yoke 132 or the coil assembly 11. This improves the success rate of installation, reduces the scrap rate of products, and improves the quality of products.

[0085] It is understandable that the first magnetic yoke 131 and the second magnetic yoke 132 can be installed relatively independently on the first housing 31. Therefore, corresponding positioning structures can be set for the first magnetic yoke 131 and the second magnetic yoke 132 respectively, thereby reducing the requirements for the processing accuracy and installation accuracy of the first magnetic yoke 131 and the second magnetic yoke 132. It is easier to improve the parallelism and magnetic efficiency between the magnetic attraction surfaces of the first magnetic yoke 131 and the second magnetic yoke 132 and the magnetic attraction part 121 of the moving magnetic guide assembly 12. This is beneficial to provide higher magnetic driving force in a smaller volume of the switching device 100. In addition, the area of ​​the first magnetic yoke 131 and the second magnetic yoke 132 used for magnetic attraction can be adjusted according to actual needs to adjust the required driving force.

[0086] Meanwhile, accurate positioning of the first magnetic yoke 131 and the second magnetic yoke 132 is also beneficial to the stability of the magnetic force generated by the first magnetic yoke 131 and the second magnetic yoke 132 through the permanent magnet 14, reducing the deviation of the magnetic force, and the magnetic resistance of the first magnetic yoke 131 and the second magnetic yoke 132 can also be set to be uniformly distributed, which in turn helps the first magnetic yoke 131 and the second magnetic yoke 132 to have stable contact with the moving magnetic conductor 12.

[0087] In some embodiments, please continue to refer to Figure 1 The coil assembly 11 and the permanent magnet 14 are respectively installed in the first housing 31 through an opening. The permanent magnet 14 is installed between the first magnetic yoke 131 and the second magnetic yoke 132. The coil assembly 11 and the permanent magnet 14 are installed in the first housing 31 through the same opening, and the permanent magnet 14 is installed between the first magnetic yoke 131 and the second magnetic yoke 132, and is inserted into the first magnetic yoke 131 and the second magnetic yoke 132 through the same opening. All of the above components can be installed with the first housing 31 as a positioning reference.

[0088] Specifically, the first housing 31 can simultaneously constrain the relative spatial positions of the first magnetic yoke 131, the second magnetic yoke 132, the coil assembly 11, and the permanent magnet 14. Since the two ends of the moving magnetic conductor assembly 12 need to be magnetically coupled to the first magnetic yoke 131 and the second magnetic yoke 132 respectively, and the moving magnetic conductor assembly 12 is slidably disposed on the inner circumference of the coil assembly 11, the relative positions of the first magnetic yoke 131 and the second magnetic yoke 132 with the coil assembly 11, the spacing between the first magnetic yoke 131 and the second magnetic yoke 132, and the contact surface fit between the permanent magnet 14 and the first magnetic yoke 131 and the second magnetic yoke 132 all directly affect the efficiency of the magnetic circuit and the reliability of the drive. In this embodiment, the magnetic yoke assembly 13, the coil assembly 11, and the permanent magnet 14 are each independently installed in their respective installation positions, thereby effectively reducing the tolerances caused by multiple positioning or different installation directions, and ensuring the installation accuracy and magnetic efficiency of the drive assembly 1.

[0089] Furthermore, both the coil assembly 11 and the permanent magnet 14 are mounted on the first housing 31 through an opening, and the permanent magnet 14 is mounted between the first yoke 131 and the second yoke 132, which helps to achieve a more efficient installation layout within a limited space.

[0090] Please refer to Figures 3 to 5 In some embodiments, the magnetic yoke has a magnetic attraction surface 312 for magnetic coupling. Specifically, in some embodiments, the first magnetic yoke 131 and the second magnetic yoke 132 both have a magnetic attraction surface 133 for magnetic coupling with the moving magnetic conductor assembly 12. The first magnetic yoke 131 and the second magnetic yoke 132 are inserted into the first housing 31 along a first direction X parallel to their respective magnetic attraction surfaces 133, and are limited to the first housing 31 along a direction perpendicular to their respective magnetic attraction surfaces 133.

[0091] Therefore, in the above scheme, the magnetic attraction surfaces 133 of the first magnetic yoke 131 and the second magnetic yoke 132 can magnetically engage with the moving magnetic conductor assembly 12. The first magnetic yoke 131 and the second magnetic yoke 132 are inserted into the first housing 31 along a first direction X parallel to the magnetic attraction surface 133, so that the first housing 31 can easily limit the first magnetic yoke 131 and the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133. In actual operation, the moving magnetic conductor assembly 12 reciprocates along the direction perpendicular to the magnetic pole surface, thus applying a force to the first magnetic yoke 131 and the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133. The limiting effect of the first housing 31 on the first magnetic yoke 131 and the second magnetic yoke 132 ensures the installation stability of the first magnetic yoke 131 and the second magnetic yoke 132 and improves the stability when engaging with the moving magnetic conductor assembly 12.

[0092] In other embodiments, the first magnetic yoke 131 and the second magnetic yoke 132 extend along the axial direction of the coil assembly 11. At least one side of the first magnetic yoke 131 along its extension direction and at least one side of the second magnetic yoke 132 along its extension direction have magnetic attraction surfaces 133 for magnetic coupling with the moving magnetic conductor assembly 12. The magnetic attraction surfaces 133 are perpendicular to the extension direction of the corresponding first magnetic yoke 131 or the extension direction of the corresponding second magnetic yoke 132. The first magnetic yoke 131 and the second magnetic yoke 132 are inserted into the first housing 31 along a first direction X parallel to their respective magnetic attraction surfaces 133, and are limited to fit with the first housing 31 in a direction perpendicular to their respective magnetic attraction surfaces 133.

[0093] In the above scheme, the first magnetic yoke 131 and the second magnetic yoke 132 are further defined to extend along the axial direction of the coil assembly 11. Therefore, the extension direction of the first magnetic yoke 131 and the second magnetic yoke 132 utilizes the axial direction of the coil assembly 11, thereby reducing the space occupied in other directions and helping to achieve miniaturization of the switching device 100. At least one side of the first magnetic yoke 131 along its extension direction and at least one side of the second magnetic yoke 132 along its extension direction have magnetic attraction surfaces 133 for magnetic coupling with the moving magnetic component 12, so that the first magnetic yoke 131 and the second magnetic yoke 132 have more space at both ends and facilitate magnetic attraction with both ends of the moving magnetic component 12. The magnetic attraction surfaces 133 are respectively set on at least one side of each magnetic yoke along its extension direction, and the magnetic attraction surfaces 133 are perpendicular to the extension direction of the corresponding magnetic yoke. Similarly, the first direction X insertion parallel to the magnetic attraction surface 133 and the limiting engagement in the direction perpendicular to the magnetic attraction surface 133 are adopted. It is understood that both the first magnetic yoke 131 and the second magnetic yoke 132 have magnetic attraction surfaces 133 for magnetic coupling with the moving magnetic conductor assembly 12. To ensure the installation accuracy of the magnetic yoke assembly 13, the first magnetic yoke 131 and the second magnetic yoke 132 are inserted into the first housing 31 along a first direction X parallel to the magnetic attraction surface 133. In this way, the first housing 31 can easily limit the first magnetic yoke 131 and the second magnetic yoke 132 in a direction perpendicular to the magnetic attraction surface 133. That is, the insertion direction of the first magnetic yoke 131 and the second magnetic yoke 132 is parallel to their magnetic attraction surfaces 133, and the first magnetic yoke... The limiting direction of the first magnetic yoke 131 and the second magnetic yoke 132 is perpendicular to the magnetic attraction surface 133, which ensures the parallelism between the magnetic attraction surface 133 of the first magnetic yoke 131 and the second magnetic yoke 132 and the magnetic attraction part 121 of the moving magnetic guide assembly 12, and ensures the stability of the first magnetic yoke 131 and the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133. This improves the stability when engaging with the moving magnetic guide assembly 12, thereby ensuring the consistency of the magnitude and direction of the magnetic attraction force between the first magnetic yoke 131 and the second magnetic yoke 132 and the moving magnetic guide assembly 12, and avoiding the decrease in magnetic efficiency due to assembly deviation.

[0094] Furthermore, by limiting the assembly of the first magnetic yoke 131 and the second magnetic yoke 132 along a direction perpendicular to the magnetic attraction surface 133, the installation accuracy of the first magnetic yoke 131 and the second magnetic yoke 132 along the direction perpendicular to the magnetic attraction surface 133 can be improved. Since there is relative movement and contact between the first magnetic yoke 131 and the second magnetic yoke 132 and the moving magnetic guide assembly 12, the moving magnetic guide assembly 12 will generate impacts on the first magnetic yoke 131 and the second magnetic yoke 132 along the direction perpendicular to the magnetic attraction surface 133 during repeated movements. By limiting the first magnetic yoke 131 and the second magnetic yoke 132 along a direction perpendicular to the magnetic attraction surface 133, the offset of the first magnetic yoke 131 and the second magnetic yoke 132 when impacted by the moving magnetic guide assembly 12 can be effectively reduced, ensuring the accuracy and stability of the magnetic coupling between the first magnetic yoke 131 and the second magnetic yoke 132 and the moving magnetic guide assembly 12.

[0095] In some embodiments, please refer to Figure 6 The first housing 31 also has a bottom wall 311 and at least two slots 312 extending from the opening toward the bottom wall 311. The extension direction of the slots 312 is set as a first direction X. Each magnetic yoke is independently inserted into the slot 312 along the first direction X, and the magnetic attraction surface 133 is parallel to the first direction X. In some embodiments, the first magnetic yoke 131 and the second magnetic yoke 132 are respectively inserted into different slots 312. In this design, the first housing 31 is provided with at least two slots 312, and the slots 312 extend along a first direction X, where the first direction X is the direction extending from the opening towards the bottom wall 311. Therefore, during actual installation, the first magnetic yoke 131 and the second magnetic yoke 132 can be inserted into their respective slots 312 through the opening along the first direction X. The slots 312 can provide a guiding effect during the installation of the first magnetic yoke 131 and the second magnetic yoke 132, guiding the insertion and engagement of the first magnetic yoke 131 and the second magnetic yoke 132, reducing the deflection or skew of the first magnetic yoke 131 and the second magnetic yoke 132 during installation. The installation method is simple and facilitates subsequent automated or semi-automated installation processes. At the same time, the first magnetic yoke 131 and the second magnetic yoke 132 are independently inserted into different slots 312, thereby determining the relative positions of the first magnetic yoke 131 and the second magnetic yoke 132 according to the position of the slots 312.

[0096] In some embodiments, each slot 312 limits the first magnetic yoke 131 and the second magnetic yoke 132 in a direction perpendicular to the magnetic absorbing surface 133. That is, the slot 312 limits the first magnetic yoke 131 and the second magnetic yoke 132 in a direction perpendicular to the magnetic absorbing surface 133, thereby precisely controlling the position of the magnetic absorbing surface 133 of the first magnetic yoke 131 and the second magnetic yoke 132, so that after the first magnetic yoke 131 and the second magnetic yoke 132 are assembled, the relative position and parallelism between the magnetic absorbing surface 133 and the magnetic absorbing part 121 of the moving magnetic guide assembly 12 can be maintained within the preset design range.

[0097] Please continue to refer to Figures 5 to 8In some embodiments, the magnetic yoke is provided with a protrusion group 134. It can also be understood that the first magnetic yoke 131 and / or the second magnetic yoke 132 are provided with a protrusion group 134. The slot wall of the slot 312 is provided with a limiting slot 3121 for each protrusion group 134 to be inserted. The protrusion group 134 has two sides facing opposite directions in a direction perpendicular to the magnetic attraction surface 133. In a direction perpendicular to the magnetic attraction surface 133, the two sides are adapted to abut against different sides of at least one limiting slot 3121 respectively. The sides of the protrusion group 134 that abut against each other with the limiting slot 3121 both extend in the first direction X. It is worth noting that the two sides being adapted to abut against different sides of at least one limiting slot 3121 respectively means that in a direction perpendicular to the magnetic attraction surface 133, the two sides of the protrusion group 134 can abut against different sides of the same limiting slot 3121 or different sides of different limiting slots 3121.

[0098] In the above scheme, the first magnetic yoke 131 and / or the second magnetic yoke 132 and their corresponding slots 312 are engaged through a protrusion assembly 134 and a limiting groove 3121. The protrusion assembly 134 has two oppositely oriented sides that abut against different sides of the limiting groove 3121. When the first magnetic yoke 131 and / or the second magnetic yoke 132 are inserted along the first direction X, the protrusion assembly 134 can form a double-sided interlocking engagement with the limiting groove 3121, ensuring that the sides of the protrusion assembly 134 and the limiting groove 3121 are in contact. The groove walls of the slot 3121 clamp and engage with each other, and extend along the first direction X, providing a better interlocking effect. This ensures that the first housing 31 is positioned and installed in a direction perpendicular to the magnetic attraction surface 133, limiting the first magnetic yoke 131 and / or the second magnetic yoke 132. Furthermore, this interlocking engagement can more effectively restrict the bidirectional displacement of the first magnetic yoke 131 and / or the magnetic yoke in the direction perpendicular to the magnetic attraction surface 133, preventing the first magnetic yoke 131 and / or the second magnetic yoke 132 from shifting or loosening in this direction due to vibration or impact.

[0099] Furthermore, since the two sides of the protrusion assembly 134 are adapted to abut against different sides of at least one limiting groove 3121 along a direction perpendicular to the magnetic attraction surface 133, and the sides of the protrusion assembly 134 abutting against the limiting groove 3121 both extend along the first direction X, when the first magnetic yoke 131 and / or the second magnetic yoke 132 and the slot 312 are installed together, the protrusion assembly 134 will be pushed by the groove wall of the limiting groove 3121 when inserted into it, causing the corresponding first magnetic yoke 131 or second magnetic yoke 132 to rotate and fine-tune around an axis parallel to the magnetic attraction surface 133 and perpendicular to the first direction X, until the protrusion assembly 134 can smoothly enter the limiting groove 3121, thereby correcting the installation posture of the first magnetic yoke 131 and / or the second magnetic yoke 132 so that the first magnetic yoke 131 and / or the second magnetic yoke 132 can be inserted. Once in place, the first magnetic yoke 131 and / or the second magnetic yoke 132 are aligned. It should be noted that the alignment of the first magnetic yoke 131 and / or the second magnetic yoke 132 means that, in the first direction X, the insertion depths at both ends of the first magnetic yoke 131 and / or the second magnetic yoke 132 are consistent. This ensures that the magnetic attraction surfaces 133 of the first magnetic yoke 131 and / or the second magnetic yoke 132 are parallel to the magnetic attraction part 121, thereby ensuring that the effective working air gap of the two meets the expected setting. This reduces magnetic loss and magnetic resistance, improves magnetic efficiency, and makes the forces on both ends of the moving magnetic conductor assembly 12 relatively balanced. This reduces the jamming or obstruction that occurs when the moving magnetic conductor assembly 12 is subjected to deflection force during movement. It should be understood that the first magnetic yoke 131 and / or the second magnetic yoke 132 can automatically align themselves during installation, which also helps to save the cost of manual inspection and improve production efficiency.

[0100] By engaging the protrusions 134 with the limiting groove 3121 on different sides, the protrusions 134 of the first magnetic yoke 131 and / or the second magnetic yoke 132, after being inserted into the limiting groove 3121, can achieve precise positioning constraint in the direction perpendicular to the magnetic attraction surface 133. Since the engaging side extends along the first direction X, this extended side provides guidance during the insertion of the first magnetic yoke 131 or the second magnetic yoke 132, and restricts its deflection around an axis parallel to the magnetic attraction surface 133 and perpendicular to the first direction X after the first magnetic yoke 131 or the second magnetic yoke 132 is installed in place. The engagement of the protrusions 134 with at least two different sides with the limiting groove 3121 effectively restricts the displacement of the first magnetic yoke 131 and / or the second magnetic yoke 132 in multiple degrees of freedom compared to single-sided contact or clearance fit, improving the assembly accuracy between the first magnetic yoke 131 or the second magnetic yoke 132 and the first housing 31. Meanwhile, the limiting groove 3121 corresponds one-to-one with the protrusion group 134, so that the protrusion group 134 can obtain independent positioning constraints, further enhancing the stability of the position of the first magnetic yoke 131 or the second magnetic yoke 132 in the first housing 31, thereby ensuring the air gap accuracy between the magnetic suction surface 133 and the end of the moving magnetic guide assembly 12.

[0101] In some embodiments, please refer to Figure 5 The first magnetic yoke 131 and / or the second magnetic yoke 132 are provided with at least two protrusions 1341 distributed in a direction perpendicular to the magnetic attraction surface 133, and each protrusion 1341 constitutes a protrusion group 134. In the embodiments of this application, the protrusion group 134 is composed of a plurality of protrusions 1341, and when the plurality of protrusions 1341 respectively cooperate with the limiting groove 3121, the stability of installation can be enhanced.

[0102] In one embodiment, along a direction perpendicular to the magnetic surface 133, each of the two protrusions 1341 has a side surface that abuts against the groove wall of the same limiting groove 3121 on different sides.

[0103] Specifically, along the direction perpendicular to the magnetic attraction surface 133, each of the two protrusions 1341 has one side that contacts the sidewalls of the same limiting groove 3121 on different sides. That is, the sides of the two protrusions 1341 that are far apart from each other abut against the two groove walls of the same limiting groove 3121, or the sides of the two protrusions 1341 that are close to each other abut against the two groove walls of the same limiting groove 3121. This staggered abutment arrangement causes the two protrusions 1341 to form mutually opposite limiting forces in the direction perpendicular to the magnetic attraction surface 133. That is, one protrusion 1341 restricts the displacement of the corresponding first magnetic yoke 131 or second magnetic yoke 132 to one side, and the other protrusion 1341 restricts the displacement of the corresponding first magnetic yoke 131 or second magnetic yoke 132 to the opposite side. By abutting against different sidewalls of the limiting groove 3121 respectively, a bidirectional limiting is formed in the direction perpendicular to the magnetic attraction surface 133. At the same time, since the two protrusions 1341 are distributed at intervals along the direction perpendicular to the magnetic attraction surface 133, they have a certain distance between them in the extension direction of the first magnetic yoke 131 or the second magnetic yoke 132, and can generate opposite forces and form a straightening torque on the corresponding first magnetic yoke 131 or the second magnetic yoke 132. This can constrain the slight deflection of the first magnetic yoke 131 or the second magnetic yoke 132 that may occur in the slot 312, so that the first magnetic yoke 131 or the second magnetic yoke 132 is in a straight posture after the protrusion 1341 is inserted into the limiting groove 3121, which further improves the certainty and stability of the first magnetic yoke 131 or the second magnetic yoke 132 in spatial posture.

[0104] In another embodiment, two protrusions 1341 are respectively inserted into two limiting grooves 3121, and along the direction perpendicular to the magnetic suction surface 133, the two sides of each protrusion 1341 are respectively attached to the two sides of the corresponding limiting groove 3121.

[0105] Among them, each protruding portion 1341 is in plug-in fit with an independent limiting groove 3121, and both side surfaces of each protruding portion 1341 are abutted against the two side surfaces of the corresponding limiting groove 3121. That is, each protruding portion 1341 is subject to bidirectional constraints of the limiting groove 3121 in the direction perpendicular to the magnetic attraction surface 133, so that the two protruding portions 1341 respectively achieve independent bidirectional limiting in their corresponding limiting grooves 3121, forming a multi-point, independent and redundant positioning effect. Moreover, the cooperation between the protruding portion 1341 and the limiting groove 3121 is also used to correct the corresponding first magnetic yoke 131 or second magnetic yoke 132, so that the first magnetic yoke 131 or second magnetic yoke 132 is in a correct posture after the protruding portion 1341 and the limiting groove 3121 are in plug-in fit.

[0106] In the above two solutions, even if one of the limiting grooves 3121 or the protruding portions 1341 is slightly worn due to machining tolerances or long-term use, the cooperation between the other protruding portion 1341 and the limiting groove 3121 can still maintain the positioning effect on the first magnetic yoke 131 and / or the second magnetic yoke 132, thereby improving the fault tolerance and long-term reliability of the installation and cooperation between the first magnetic yoke 131 and / or the second magnetic yoke 132 and the corresponding slot 312. In addition, the bilateral abutment between each protruding portion 1341 and the limiting groove 3121 makes the cooperation between the first magnetic yoke 131 and / or the second magnetic yoke 132 and the corresponding slot 312 closer, reducing the situation that the protruding portion 1341 slightly shakes or moves in the limiting groove 3121.

[0107] Please refer to Figure 7 , in some embodiments, the first magnetic yoke 131 includes a first plate body 1311 extending in a direction parallel to the axial direction of the coil assembly 11, and second plate bodies 1312 and third plate bodies 1313 respectively connected to both ends of the first plate body 1311 and perpendicular to the first plate body 1311. The second plate bodies 1312 and the third plate bodies 1313 both extend in a direction close to the moving magnetic conduction component 12, so that the first magnetic yoke 131 as a whole presents a "U" - shaped or "匚" - shaped structure.

[0108] Specifically, the width direction of the first plate body 1311 is located in the first direction X. The second plate body 1312 is connected to one end of the first plate body 1311 and perpendicular to the first plate body 1311, and the second plate body 1312 extends in a direction close to the moving magnetic conduction component 12; the third plate body 1313 is connected to the other end of the first plate body 1311 and perpendicular to the first plate body 1311, and the third plate body 1313 extends in a direction close to the moving magnetic conduction component 12. The second plate bodies 1312 and the third plate bodies 1313 are both used to form the protruding portions 1341.

[0109] The second plate 1312 and the third plate 1313 respectively constitute two protrusions 1341 in the protrusion group 134. Therefore, the second plate 1312 and the third plate 1313 can be inserted into the limiting groove 3121. The second plate 1312 and the third plate 1313 have a certain thickness in the direction perpendicular to the magnetic attraction surface 133, so that they can be inserted into the limiting groove 3121. The first magnetic yoke 131 is precisely limited in the direction perpendicular to the magnetic attraction surface 133 by the abutting of its side against the groove wall of the limiting groove 3121. In the example provided in this embodiment, both sides of the thickness direction of the second plate 1312 and both sides of the thickness direction of the third plate 1313 are respectively connected to the corresponding limiting groove. The two side walls of the slot 3121 are close together. When the first housing 31 is inserted through the opening, the second plate 1312 and the third plate 1313, as protrusions 1341, can be inserted into the corresponding limiting slots 3121 respectively. The first plate 1311 is inserted along the extension direction of the slot 312. Since the second plate 1312 and the third plate 1313 are respectively located at both ends in the extension direction of the first plate 1311, the two and the limiting slot 3121 form two positioning points with a certain distance between them. This can effectively constrain the possible deflection or tilt of the first magnetic yoke 131 in the slot 312, ensure that the first magnetic yoke 131 is in a straight position after insertion, and improve the posture stability of the first magnetic yoke 131 during long-term use.

[0110] A magnetic attraction surface 133 is formed on the side of the second plate 1312 facing the other end of the first plate 1311, and a magnetic attraction surface 133 is formed on the side of the third plate 1313 facing the second plate 1312. These two magnetic attraction surfaces 133 are arranged opposite to each other. When the moving magnetic guide assembly 12 is located between the first magnetic yoke 131 and the second magnetic yoke 132, both ends of the moving magnetic guide assembly 12 can form a face-to-face magnetic coupling relationship with the magnetic attraction surfaces 133 on the second plate 1312 and the third plate 1313, respectively. 1312 and the third plate 1313 are located at the two ends of the first plate 1311, and there is a certain distance between them along the axial direction of the coil assembly 11. This structure allows the moving magnetic component 12 to be tightly fitted with one of the magnetic suction surfaces 133 at the two extreme positions of its sliding stroke, so that the moving magnetic component 12 can be precisely limited. Since the moving magnetic component 12 is used to drive the moving contact component 21, it can further ensure the accuracy of the contact gap between the moving contact component 21 and the stationary contact component 22.

[0111] In this embodiment, the second plate 1312 and the third plate 1313 of the first magnetic yoke 131 serve as both protrusions 1341 and magnetic attraction surfaces 133, which facilitates installation while maintaining a simple structure. Furthermore, both the second plate 1312 and the third plate 1313 extend outwards, providing a large magnetic attraction area. In addition, the second plate 1312 and the third plate 1313 are connected to both ends of the first plate 1311, and are spaced far apart. Therefore, the straightening torque generated when the protrusions 1341 and the limiting groove 3121 are installed together is greater, ensuring that the first magnetic yoke 131 is in a straight position after insertion.

[0112] Please refer to Figure 2 , Figure 8 and Figure 9 In some embodiments, the second magnetic yoke 132 includes a fourth plate 1321, please refer to Figure 2 and Figure 8 The fourth plate 1321 extends along the axial direction of the parallel coil assembly 11. In some embodiments, the fourth plate 1321 and the first plate 1311 extend in the same direction. The width direction of the fourth plate 1321 is located in the first direction X. A protruding protrusion 1341 is provided on one side of the thickness direction of the fourth plate 1321, and both end faces of the fourth plate 1321 along its extension direction are suitable for forming magnetic attraction surfaces 133.

[0113] It is understood that the fourth plate 1321 extends axially along the coil assembly 11, and a protruding protrusion 1341 is provided on one side of the thickness direction of the fourth plate 1321 for insertion and engagement with the limiting groove 3121 of the first housing 31 to achieve positioning constraint of the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133. When the fourth plate 1321 and the slot 312 are installed, the engagement of the protrusion 1341 of the fourth plate 1321 and the limiting groove 3121 can ensure that the fourth plate 1321 is aligned and assembled.

[0114] And please continue to refer to Figure 2 and Figure 8Both end faces of the fourth plate 1321 along its extension direction are adapted to form magnetic attraction surfaces 133, which are respectively used to magnetically couple with the magnetic attraction portions 121 on the armatures 123 at both ends of the moving magnetic component 12. When the moving magnetic component 12 slides to a certain extreme position, the magnetic attraction portion 121 of the armature 123 on that side forms face-to-face contact or near contact with the end face of the corresponding end of the fourth plate 1321. It should be noted that when the coil assembly 11 is energized (e.g., forward energized), the first magnetic yoke 131 can form magnetic coupling with the armature 123 at one end of the moving magnetic component 12 through the second plate 1312; the second magnetic yoke 132 can form magnetic coupling with the other armature 123 through the magnetic attraction surface 133 on the end face away from the second plate 1312; or, when the coil assembly 11 is energized (e.g., reverse energized), the first magnetic yoke 131 can form magnetic coupling with the armature 123 at one end of the moving magnetic component 12 through the third plate 1313, and the second magnetic yoke 132 can... The magnetic attraction surface 133 on the end face near one end of the second plate 1312 forms a magnetic coupling with another armature 123. Since the magnetic properties of the first yoke 131 and the second yoke 132 are opposite, the magnetic properties of the armatures 123 at both ends of the moving magnetic component 12 are also opposite, thus enabling bipolar magnetic coupling. This helps to form a more stable magnetic attraction between the moving magnetic component 12 and the first yoke 131 and the second yoke 132, thereby supporting the function of the moving magnetic component 12 engaging with the first yoke 131 and the second yoke 132 at the contact closed position and / or open position, respectively.

[0115] In some embodiments, along the first direction X, a protrusion 1341 on the fourth plate 1321 is provided on the side of the fourth plate 1321 near the opening. One of the sides of the fourth plate 1321 near the bottom wall 311 and the bottom wall 311 is provided with a limiting protrusion 3111 and the other is provided with a limiting groove 135. The limiting protrusion 3111 and the limiting groove 135 are inserted and engaged. The protrusion 1341 provided at the opening can limit the fourth plate 1321 at the opening position, while the limiting protrusion 3111 or the limiting groove 135 provided on or near the bottom wall 311 can achieve limiting engagement of the fourth plate 1321 at the position near the bottom wall 311.

[0116] Furthermore, in some embodiments, along the direction perpendicular to the magnetic surface 133, the two sides of the limiting protrusion 3111 are respectively attached to the two sides of the limiting groove 135, and at least one pair of surfaces of the limiting protrusion 3111 and the limiting groove 135 that are attached to each other extend along the first direction X.

[0117] Therefore, during the assembly process, when the fourth plate 1321 is inserted into the slot 312 of the first housing 31 along the first direction X, one scenario is that the protrusion 1341 near the opening end first enters the corresponding limiting groove 3121, serving as an initial guide; as the insertion depth increases, the limiting protrusion 3111 near the bottom wall 311 gradually enters the limiting groove 135, and the two slide relative to each other along the first direction X until the fourth plate 1321 reaches the predetermined position. Through the cooperation of the protrusion 1341 and the limiting groove 3121 at the opening position and the limiting protrusion 3111 and the limiting groove 135 at the bottom wall 311, the fourth plate 1321 is aligned and installed; another scenario is that the limiting protrusion 3111 near the bottom wall 311 first gradually enters the limiting groove 135, and the two slide relative to each other in the first direction X, and then the protrusion 1341 at the opening end enters the corresponding limiting groove 3121, thereby achieving a double limiting and alignment effect at the opening and the bottom wall 311. For example, such as Figure 8 As shown, the fourth plate 1321 is provided with a limiting groove 135 on the side near the bottom wall 311. Correspondingly, the bottom wall 311 is provided with a limiting protrusion 3111. This arrangement can also improve the strength of the bottom wall 311, i.e. the first shell 31, while ensuring a stable fit between the fourth plate 1321 and the bottom wall 311.

[0118] In some embodiments, along the direction perpendicular to the magnetic pole surface, the protrusion 1341 of the fourth plate 1321 is disposed as close as possible to both ends, but not at both ends of the fourth plate 1321, and the protrusion 1341 extends along the first direction X. The protrusion 1341 on the fourth plate 1321 is disposed on the side of the fourth plate 1321 near the opening. Based on this, if the protrusion 1341 has a longer dimension along the first direction X, then the limiting groove 3121 of the slot 312 corresponding to the fourth plate 1321 needs to be correspondingly set with a longer dimension along the first direction X, resulting in weakened strength of the slot wall of the slot 312 and lower resistance to deformation. Therefore, in this embodiment, the protrusion 1341 is disposed on the side of the fourth plate 1321 near the opening, making the dimension of the protrusion 1341 extending along the first direction X shorter, thereby making the corresponding limiting groove 3121 also have a shorter dimension along the first direction X. The size of X and its proximity to the opening enhance the limiting strength of the slot 312 wall, ensuring that the limiting slot 3121 can cooperate with the protrusion 1341 to achieve the upright installation of the fourth plate 1321 at the opening. At the same time, the bottom limiting protrusion 3111 and the limiting groove 135 cooperate to ensure the installation strength and upright assembly of the fourth plate 1321 along the side near the bottom wall 311. In addition, the shorter length of the protrusion 1341 along the first direction X also helps to reduce the reduction of the magnetic conductive area of ​​the second magnetic yoke 132 and ensure the magnetic conductive efficiency of the second magnetic yoke 132.

[0119] Furthermore, along the direction perpendicular to the magnetic attraction surface 133, the two sides of the limiting protrusion 3111 respectively abut against the two sides of the limiting groove 135. Therefore, the limiting protrusion 3111 or limiting groove 135 near the bottom wall 311 and the protrusion 1341 and limiting groove 3121 near the opening end form a complementary structure. Both provide bidirectional limiting in the direction perpendicular to the magnetic attraction surface 133. Moreover, the two positioning structures are spaced apart in the first direction X. Therefore, when the fourth plate 1321 is subjected to external vibration or mechanical impact, the two positioning structures work together to effectively constrain the movement of the fourth plate 1321 in the direction perpendicular to the magnetic attraction surface 133, and also limit the possible deflection of the fourth plate 1321 in the plane parallel to the magnetic attraction surface 133. This positioning method with fixed ends provides higher stability and reliability in resisting changes in the attitude of the second magnetic yoke 132.

[0120] During the use of the switching device 100, even if the fit between the slot 312 wall and the protrusion 1341 becomes slightly loose due to long-term vibration, the limiting protrusion 3111 near the bottom wall 311 and the limiting groove 135 can still maintain the positioning of the second magnetic yoke 132, thus providing redundant positioning protection and helping to extend the life of the second magnetic yoke 132 positioning installation.

[0121] In some embodiments, the fourth plate 1321 is a stamped part. It should be noted that stamping is a processing method that uses pressure to plastically deform a sheet metal to obtain the desired shape. Using stamping to manufacture the fourth plate 1321 can significantly reduce the amount of material removed, improve material utilization, and reduce the need for subsequent machining processes. This allows the second magnetic yoke 132 to be mass-produced with high efficiency and low cost. Furthermore, stamping ensures the consistency of plate dimensions, which is beneficial for precise control of the fit clearance between the second magnetic yoke 132 and the first housing 31. Simultaneously, the stamping process is suitable for manufacturing structures with features such as protrusions 1341, enabling the protrusions 1341 to be integrally formed with the fourth plate 1321 body, reducing subsequent machining processes.

[0122] Correspondingly, along the thickness direction of the fourth plate 1321, the thickness of the protrusion 1341 is less than or equal to two-thirds of the thickness of the fourth plate 1321. The fourth plate 1321 is a stamped part, and its protrusion 1341 is formed by local deformation of the sheet metal using a die. During the stamping process, when a protrusion is formed on one side of the sheet metal in the thickness direction, the thickness of the protrusion 1341 is usually less than the original sheet metal thickness. This is because plastic flow occurs during material deformation, and the protruding area is stretched and thinned. Therefore, limiting the thickness of the protrusion 1341 to less than or equal to two-thirds of the thickness of the fourth plate 1321 means that the thinning amount of the protrusion 1341 is controlled within a certain range. Within a certain range, this helps to reduce local strength reduction or molding defects such as cracking, necking, or uneven springback caused by excessive thinning of the protrusion 1341. In addition, the insertion fit between the protrusion 1341 and the limiting groove 3121 of the slot 312 requires the protrusion 1341 to have sufficient structural strength to withstand the insertion and extraction forces that may be generated during assembly, as well as the lateral loads generated by vibration or magnetic attraction during use. By controlling the thickness of the protrusion 1341 to within two-thirds of the thickness of the fourth plate 1321, the protrusion 1341 has sufficient strength to form a reliable limiting fit with the first housing 31, and is also conducive to the installation of the protrusion with the limiting groove 3121 during insertion.

[0123] Furthermore, by limiting the thickness of the protrusion 1341, the loss of effective magnetic cross-sectional area of ​​the fourth plate 1321 during the stamping process can be reduced, thereby improving the magnetic conductivity of the fourth plate 1321.

[0124] In some embodiments, along the thickness direction of the fourth plate 1321, the insertion depth of the protrusion 1341 and the limiting groove 3121 is less than or equal to two-thirds of the thickness of the protrusion 1341. The insertion depth refers to the actual depth to which the protrusion 1341 is inserted into the limiting groove 3121 along the thickness direction of the fourth plate 1321. By limiting the insertion depth of the protrusion 1341 and the limiting groove 3121, the risk of suffocation caused by multiple mating positions is reduced by decreasing the contact area when multiple protrusions 1341 and multiple limiting grooves 3121 are simultaneously inserted and mated.

[0125] Furthermore, limiting the insertion depth to less than or equal to two-thirds of the thickness of the protrusion 1341 means that the protrusion 1341 is not fully inserted into the limiting groove 3121, but a portion (at least one-third) is located outside the limiting groove 3121. Since the contact area between the protrusion 1341 and the limiting groove 3121 is related to the insertion depth, limiting the insertion depth within a certain range helps to avoid problems such as interference fit or excessive assembly resistance caused by excessive insertion, making the assembly process smoother. Moreover, controlling the insertion depth to two-thirds of the thickness of the protrusion 1341... In this way, on the one hand, the protrusion 1341 is constrained to a sufficient depth within the limiting groove 3121, which can effectively limit the displacement of the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133. On the other hand, it can also reduce the excessive stress concentration at the root of the protrusion 1341 (i.e. the side connected to the fourth plate 1321) caused by excessive insertion depth. Under external vibration or mechanical impact, the mating surface of the protrusion 1341 and the limiting groove 3121 can uniformly bear the load, reducing the risk of deformation of the protrusion 1341 or wear of the wall of the limiting groove 3121 due to local overload.

[0126] In other embodiments, the first magnetic yoke 131 and / or the second magnetic yoke 132 are provided with a protrusion 1341, which constitutes a protrusion group 134. The two sides of the protrusion 1341 along the direction perpendicular to the magnetic attraction surface 133 respectively abut against the two groove walls of the corresponding limiting groove 3121. There is one protrusion 1341, and one protrusion 1341 constitutes a protrusion group 134. The protrusion 1341 has two oppositely oriented sides along the direction perpendicular to the magnetic attraction surface 133, and these two sides abut against the two groove walls of the limiting groove 3121 respectively. This method of a single protrusion 1341 abutting on both sides reduces the installation difficulty between the first magnetic yoke 131 and / or the second magnetic yoke 132 and the corresponding limiting groove 3121, and simplifies the setting of the protrusion 1341 and the limiting groove 3121.

[0127] Furthermore, the two sides of the protrusion 1341 abut against the two groove walls of the limiting groove 3121, respectively. In the direction perpendicular to the magnetic attraction surface 133, the protrusion 1341 and the limiting groove 3121 form a gapless or interference fit, thereby realizing the upright installation of the corresponding first magnetic yoke 131 or second magnetic yoke 132. This ensures that the first magnetic yoke 131 or second magnetic yoke 132 is in an upright posture after being inserted into place, and directly limits the first magnetic yoke 131 and / or second magnetic yoke 132 in the vertical direction. The position is perpendicular to the magnetic suction surface 133, so that the air gap between the corresponding magnetic suction surface 133 and the magnetic suction part 121 of the moving magnetic guide assembly 12 is determined. Since the contact surfaces of the protrusion 1341 and the limiting groove 3121 exist in pairs in the direction perpendicular to the magnetic suction surface 133, and the two contact surfaces of the protrusion 1341 respectively restrict the displacement in opposite directions, it can effectively resist the influence of external vibration or mechanical impact on the position of the first magnetic yoke 131 and / or the second magnetic yoke 132 in this direction.

[0128] In some embodiments, the protrusion 1341 extends in a direction perpendicular to the magnetic surface 133, and the length of the protrusion 1341 in the direction perpendicular to the magnetic surface 133 is greater than or equal to half the length of the corresponding first yoke 131 or second yoke 132 in the direction perpendicular to the magnetic surface 133. The protrusion 1341 extends in a direction perpendicular to the magnetic surface 133. The direction of extension of the protrusion 1341 is consistent with the direction in which the two sides of the protrusion 1341 abut against the two sides of the limiting groove 3121. In the direction perpendicular to the magnetic surface 133, the length of the protrusion 1341 is limited to be greater than or equal to half the length of the corresponding first magnetic yoke 131 or second magnetic yoke 132 in the direction perpendicular to the magnetic surface 133. Therefore, the length of the protrusion 1341 in the direction perpendicular to the magnetic surface 133 is relatively large, which is beneficial to better constrain the position of the first magnetic yoke 131 or second magnetic yoke 132 in the direction perpendicular to the magnetic surface 133. On the other hand, the distance between the two ends of the protrusion 1341 in the direction perpendicular to the magnetic surface 133 is relatively large, which is also beneficial to generate a larger straightening torque when the protrusion 1341 and the limiting groove 3121 are installed together, which is more conducive to achieving the first magnetic yoke 131 or second magnetic yoke 132 in a straight position after being inserted into place.

[0129] Furthermore, when the extension length of the protrusion 1341 in this direction is large, the distance between the two sides of the protrusion 1341 in the direction perpendicular to the magnetic attraction surface 133 and the distance between the two groove walls of the limiting groove 3121 in the direction perpendicular to the magnetic attraction surface 133 are both large, which can more effectively resist the deflection torque that the corresponding first magnetic yoke 131 or second magnetic yoke 132 may be subjected to during application. Specifically, when the first magnetic yoke 131 or the second magnetic yoke 132 is subjected to external vibration or magnetic attraction and attempts to deflect slightly around a certain axis, the longer protrusion 1341 and the mating surface of the limiting groove 3121 provide a larger anti-bending arm, making it easier to maintain the stable posture of the first magnetic yoke 131 and / or the second magnetic yoke 132. This reduces the risk of uneven air gap between the magnetic attraction surface 133 and the end face of the moving magnetic guide assembly 12 due to deflection. Furthermore, setting the length of the protrusion 1341 to be greater than or equal to the length of the corresponding first magnetic yoke 131 or second magnetic yoke 132 helps to avoid insufficient positioning due to the protrusion 1341 being too short, and also prevents the risk of material redundancy or interference with other components that may result from the protrusion 1341 being too long.

[0130] Please refer to Figure 10In some embodiments, at least one side of the limiting groove 3121 that abuts against the protrusion group 134 is an arc-shaped surface 31211a; or, at least one side of the limiting groove 3121 that abuts against the protrusion group 134 is provided with a rib 31211 extending along the first direction X, and the side of the rib 31211 that abuts against the protrusion group 134 is an arc-shaped surface 31211a. It is understandable that by setting the arc-shaped surface 31211a as the contact surface, the arc-shaped surface 31211a presents a convex curved shape in the direction perpendicular to the magnetic attraction surface 133, reducing the contact area between the protrusion group 134 and the limiting groove 3121, thereby helping to reduce the risk of jamming caused by multiple mating positions. In addition, the contact position 151a has a small area, and the deformation of the contact position 151a is also small when the first housing 31 is formed, so the alignment and limiting effect of the corresponding first magnetic yoke 131 or second magnetic yoke 132 is also better. Furthermore, during the process of the first magnetic yoke 131 or second magnetic yoke 132 being inserted into the corresponding slot 312 along the first direction X, the arc-shaped surface 31211a... 211a can guide the protrusion group 134. The arc-shaped surface 31211a allows the protrusion group 134 to enter the limiting groove 3121 with a small contact area when inserted. As the insertion depth increases, the contact area between the protrusion group 134 and the limiting groove 3121 gradually increases, eventually achieving stable line contact or narrow surface contact. This effectively reduces the impact of the initial alignment deviation between the protrusion group 134 and the limiting groove 3121 on the smoothness of assembly, allowing the protrusion group 134 to be smoothly inserted into the limiting groove 3121, reducing the risk of assembly jamming caused by manufacturing tolerances. Furthermore, the line contact fit and narrow surface contact fit allow for stable contact even with certain manufacturing deviations. In another embodiment, a rib 31211 is provided, and an arc-shaped surface 31211a is provided on the side of the rib 31211 that abuts against it. The rib 31211 is used to further enhance the limiting effect and the strength of the assembly. The side of the rib 31211 that abuts against the protrusion assembly 134 is set as an arc-shaped surface 31211a, which can form line contact and narrow surface contact with the protrusion 1341. This reduces the risk of jamming during the installation of the protrusion assembly 134 due to the influence of dimensional tolerances, and facilitates the subsequent automated or semi-automated assembly.

[0131] In some embodiments, the bottom wall 311 is provided with limiting portions, and each limiting portion has an abutting surface 3112 on the side facing the opening. The first magnetic yoke 131 and the second magnetic yoke 132 are both adapted to abut against the corresponding abutting surface 3112 on the side facing the bottom wall 311. Specifically, during the insertion of the first magnetic yoke 131 and / or the second magnetic yoke 132 into the slot 312 along the first direction X, the abutment surface 3112 of the limiting part facing the opening side provides a clear insertion endpoint for the first magnetic yoke 131 or the second magnetic yoke 132. When the side of the first magnetic yoke 131 and / or the second magnetic yoke 132 facing the bottom wall 311 abuts against the abutment surface 3112, the position of the first magnetic yoke 131 and / or the second magnetic yoke 132 in the insertion direction, i.e., the first direction X, is determined. Therefore, during the assembly process, the operator does not need to use measuring tools or rely on visual inspection to judge the insertion depth of the first magnetic yoke 131 and / or the second magnetic yoke 132. The axial positioning can be completed simply by pushing the first magnetic yoke 131 and / or the second magnetic yoke 132 to abut against the abutment surface 3112. This simplifies the assembly operation, improves assembly efficiency and positional consistency, and facilitates subsequent automated or semi-automated assembly.

[0132] Furthermore, the limiting portion of the bottom wall 311 can limit the first magnetic yoke 131 or the second magnetic yoke 132 in the first direction X, and the slot 312 can limit the first magnetic yoke 131 or the second magnetic yoke 132 in a direction perpendicular to the magnetic attraction surface 133, realizing the limiting assembly of the first magnetic yoke 131 and / or the second magnetic yoke 132 in multiple directions. The assembly stability of the first magnetic yoke 131 and / or the second magnetic yoke 132 is further improved, and the air gap accuracy between the magnetic attraction surface 133 of the first magnetic yoke 131 and / or the second magnetic yoke 132 and the magnetic attraction portion 121 of the moving magnetic guide assembly 12 is also further improved, so that the first magnetic yoke 131 and / or the second magnetic yoke 132 and the two ends of the moving magnetic guide assembly 12 can be stably attracted or separated.

[0133] In some embodiments, the limiting part is integrally formed on the first housing 31, thereby reducing the assembly steps and difficulty of the limiting part.

[0134] Furthermore, the first magnetic yoke 131 and the second magnetic yoke 132 each correspond to at least two limiting parts. Each limiting part corresponding to the first magnetic yoke 131 or the second magnetic yoke 132 is distributed along a direction perpendicular to the magnetic attraction surface 133, and each abutting surface 3112 is flush with the first direction X. The first magnetic yoke 131 or the second magnetic yoke 132 abuts against each of the corresponding abutting surfaces 3112. It is understandable that when the first magnetic yoke 131 and / or the second magnetic yoke 132 simultaneously abut against multiple contact surfaces 3112 on the side facing the bottom wall 311, the first magnetic yoke 131 and / or the second magnetic yoke 132 form multiple support positions through the multiple contact surfaces 3112 in the first direction X. Furthermore, the multiple contact surfaces 3112 are distributed along the direction perpendicular to the magnetic attraction surface 133, so that the first magnetic yoke 131 and / or the second magnetic yoke 132 have multiple support positions in the direction perpendicular to the magnetic attraction surface 133. This effectively reduces the possibility of slight swaying or tilting of the first magnetic yoke 131 and / or the second magnetic yoke 132 in this direction due to single-point support. In particular, when the first magnetic yoke 131 and / or the second magnetic yoke 132 is subjected to the magnetic attraction force from the automatic magnetic guide assembly 12, the axial load can be distributed to multiple contact positions 151a, reducing the pressure on each contact surface 3112, while maintaining the stability of the posture of the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0135] Furthermore, during the assembly process, when the first magnetic yoke 131 and / or the second magnetic yoke 132 are inserted into the slot 312 along the first direction X until they abut against multiple contact surfaces 3112, since each contact surface 3112 is flush, the first magnetic yoke 131 and / or the second magnetic yoke 132 will be naturally constrained to a position that adapts to the contact surfaces 3112. This reduces the tilting or single-point suspension of the first magnetic yoke 131 and / or the second magnetic yoke 132 due to the height difference between different limiting parts or a single limiting part and the bottom wall 311. This further ensures that the first magnetic yoke 131 and the second magnetic yoke 132 are in a straight position after being inserted into place, ensuring that the parallelism of their magnetic attraction surfaces 133 and the air gap meet the preset values.

[0136] Please refer to Figure 9 In some embodiments, one of the first magnetic yoke 131 and the bottom wall 311 is provided with a limiting protrusion 3111 and the other is provided with a limiting groove 135; and / or, one of the second magnetic yoke 132 and the bottom wall 311 is provided with a limiting protrusion 3111 and the other is provided with a limiting groove 135. The limiting protrusion 3111 is used to engage with the limiting groove 135 in a direction perpendicular to the magnetic attraction surface 133, and at least one pair of surfaces of the limiting protrusion 3111 and the limiting groove 135 that abut against each other extend along the first direction X.

[0137] The first magnetic yoke 131 and the bottom wall 311 are provided with a limiting protrusion 3111 and the other with a limiting groove 135, which includes two cases: the first magnetic yoke 131 is provided with a limiting protrusion 3111 and the bottom wall 311 is provided with a limiting groove 135, or the first magnetic yoke 131 is provided with a limiting groove 135 and the bottom wall 311 is provided with a limiting protrusion 3111; the second magnetic yoke 132 and the bottom wall 311 are provided with a limiting protrusion 3111 and the other with a limiting groove 135, which also includes two cases. That is, the second magnetic yoke 132 is provided with a limiting protrusion 3111 and the bottom wall 311 is provided with a limiting groove 135, or the second magnetic yoke 132 is provided with a limiting groove 135 and the bottom wall 311 is provided with a limiting protrusion 3111; two of the second magnetic yoke 132 and the bottom wall 311 are provided with limiting protrusions 3111, and through the insertion and cooperation of the limiting protrusions 3111 and the limiting groove 135, a limiting direction perpendicular to the magnetic attraction surface 133 is formed between the bottom wall 311 and the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0138] It is understood that at least one pair of limiting protrusions 3111 and at least one pair of limiting grooves 135 with their surfaces abutting each other extend along the first direction X, ensuring the correct orientation of the first magnetic yoke 131 and / or the second magnetic yoke 132 when installed near the bottom wall 311, ensuring the parallelism of the magnetic attraction surfaces 133 of the first magnetic yoke 131 and / or the second magnetic yoke 132 and the air gap meet the preset values, thereby ensuring that the first magnetic yoke 131 and / or the second magnetic yoke 132 can provide a greater magnetic driving force for the moving magnetic component 12. Since the moving magnetic component 12 can drive the moving contact component 21, when the moving contact component 21 and the stationary contact component 22 are configured to have a large contact gap, the greater driving force of the moving magnetic component 12 can reliably drive the movement of the moving contact component 21, thereby realizing the closing or opening between the moving contact component 21 and the stationary contact component 22, which is suitable for reducing the size of the coil component 11, and thus reducing the size of the switching device 100.

[0139] Furthermore, the setting of the limiting protrusion 3111 and the limiting groove 135 also allows the first magnetic yoke 131 and / or the second magnetic yoke 132 to be constrained on both sides in the direction perpendicular to the magnetic attraction surface 133, further limiting the displacement of the bottom of the first magnetic yoke 131 and / or the second magnetic yoke 132 relative to the bottom wall 311. Moreover, the insertion and engagement of the limiting protrusion 3111 and the limiting groove 135, combined with the limiting effect of the insertion and engagement of the protrusion group 134 and the limiting groove 3121, achieves a more precise positioning and installation effect for the first magnetic yoke 131 and / or the second magnetic yoke 132, enhancing the overall stability of the first magnetic yoke 131 and / or the second magnetic yoke 132 within the slot 312, which is beneficial for resisting the positional displacement of the first magnetic yoke 131 and / or the second magnetic yoke 132 when subjected to impacts perpendicular to the magnetic attraction surface 133.

[0140] In some embodiments, since the protrusion 1341 and the limiting groove 3121 are close to the opening of the first housing 31, and the limiting protrusion 3111 and the limiting groove 135 are located at or near the bottom wall 311 of the first housing 31, the protrusion 1341 and the limiting groove 3121, together with the limiting protrusion 3111 and the limiting groove 135, can limit the two ends of the corresponding first magnetic yoke 131 or second magnetic yoke 132 along the first direction X, thereby aligning and installing the first magnetic yoke 131 or second magnetic yoke 132 along the first direction X, further improving the accuracy of the installation of the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0141] In some embodiments, the first magnetic yoke 131 has multiple limiting protrusions 3111 and limiting grooves 135, and each limiting protrusion 3111 and each limiting groove 135 corresponds one-to-one; and / or, the second magnetic yoke 132 has multiple limiting protrusions 3111 and limiting grooves 135, and each limiting protrusion 3111 and each limiting groove 135 corresponds one-to-one. By setting multiple sets of limiting protrusions 3111 and limiting grooves 135, multiple insertion and engagement positions are formed between the bottom wall 311 and the first magnetic yoke 131 and / or the second magnetic yoke 132. These multiple sets of insertion and engagement positions are distributed along the extension direction of the first magnetic yoke 131 and the second magnetic yoke 132 or in a direction perpendicular to the magnetic attraction surface 133. This allows the bottom of the first magnetic yoke 131 and / or the second magnetic yoke 132 to be positioned and constrained in a direction perpendicular to the magnetic attraction surface 133, further limiting the displacement tendency of the first magnetic yoke 131 and the second magnetic yoke 132 in a direction perpendicular to the magnetic attraction surface 133. In addition, the multi-point insertion and engagement can more effectively resist the displacement of the first magnetic yoke 131 and the second magnetic yoke 132 when subjected to torsional torque. By distributing the load across each limiting protrusion 3111 and limiting groove 135, the force on each set of limiting protrusions 3111 and limiting grooves 135 is reduced, thereby improving the reliability and durability of the positioning between the first magnetic yoke 131 and / or the second magnetic yoke 132 and the slot 312. Furthermore, even if one set of limiting protrusions 3111 and limiting grooves 135 experiences wear due to long-term engagement, manufacturing tolerances, or external impacts, resulting in engagement gaps or positioning deviations, the remaining sets of limiting protrusions 3111 and limiting grooves 135 can still maintain the positioning function of the first magnetic yoke 131 and / or the second magnetic yoke 132, improving the fault tolerance of the assembly of the first magnetic yoke 131 and / or the second magnetic yoke 132 and extending the engagement life.

[0142] Furthermore, the number of limiting protrusions 3111 and limiting grooves 135 can be two or more. For the first magnetic yoke 131 and / or the second magnetic yoke 132 where space is limited or the force is small, the number of limiting protrusions 3111 and limiting grooves 135 can be two to reduce manufacturing and assembly difficulties. This application does not limit this, and the appropriate number of limiting protrusions 3111 and limiting grooves 135 can be set according to actual needs.

[0143] Please continue to refer to Figure 1 and Figure 10 In some embodiments, at least one rib 31211 is provided on at least one side of the slot 312 for engaging with the first magnetic yoke 131 or the second magnetic yoke 132 in a direction parallel to the magnetic attraction surface 133 and perpendicular to the first direction X. The rib 31211 is adapted to abut against the first magnetic yoke 131 or the second magnetic yoke 132 to limit the first magnetic yoke 131 or the second magnetic yoke 132 in a direction parallel to the magnetic attraction surface 133 and perpendicular to the first direction X, thereby further improving the stability of the first magnetic yoke 131 or the second magnetic yoke 132. When ribs 31211 are provided on the groove wall, it is understood that ribs 31211 can be used to fit with the first magnetic yoke 131 or the second magnetic yoke 132. Ribs 31211 extend along the first direction X. During the insertion of the first magnetic yoke 131 and / or the second magnetic yoke 132 along the first direction X, ribs 31211, as a raised contact feature, first contact the corresponding side of the first magnetic yoke 131 or the second magnetic yoke 132, thereby reducing the contact area between the slot 312 and the first magnetic yoke 131 or the second magnetic yoke 132, reducing the frictional resistance during the insertion process, facilitating assembly, and also facilitating the subsequent automated or semi-automated assembly process. Meanwhile, the extension of the rib 31211 along the insertion direction, i.e., the first direction X, ensures that during the insertion stroke, the rib 31211 and the first magnetic yoke 131 and / or the second magnetic yoke 132 form continuous contact along the first direction X. This provides guidance and reduces jamming caused by certain dimensional deviations between the slot wall of the slot 312 and the sides of the first magnetic yoke 131 and / or the second magnetic yoke 132. Since the contact area between the rib 31211 and the first magnetic yoke 131 and / or the second magnetic yoke 132 is relatively narrow, there is less scraping and the limiting accuracy is higher. When multiple ribs 31211 are provided, each rib 31211 can share the limiting load, forming multi-point limiting, which further improves the redundancy and durability of the limiting installation of the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0144] In some embodiments, the rib 31211 is an arc-shaped surface 31211a used to abut against the side of the first magnetic yoke 131 and / or the second magnetic yoke 132. Therefore, when the first magnetic yoke 131 and / or the second magnetic yoke 132 are inserted into the slot 312, the top of the arc-shaped surface 31211a first contacts the side of the first magnetic yoke 131 and / or the second magnetic yoke 132. The contact area is small, which helps to reduce insertion friction resistance and reduce scraping. As the insertion depth increases, the arc-shaped surface 31211a has a smaller contact area with the side of the first magnetic yoke 131 and / or the second magnetic yoke 132. The limiting installation effect of the first magnetic yoke 131 and / or the second magnetic yoke 132 is better. If there is a positional deviation between the first magnetic yoke 131 or the second magnetic yoke 132 and the slot 312 on the plane perpendicular to the first direction X, the arc surface 31211a can guide the first magnetic yoke 131 and / or the second magnetic yoke 132 to gradually slide along the curve to the preset mating position, achieving an adaptive centering effect, reducing the risk of jamming caused by manufacturing tolerances or assembly deviations, and improving the smoothness of assembly.

[0145] Furthermore, the radius of curvature of the arc surface 31211a can be selected according to design requirements, and this application does not limit it. Arc surfaces 31211a with different radii of curvature can be used to balance the relationship between contact pressure and contact area, thereby extending the service life of the fit between the rib 31211 and the side of the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0146] Please refer to Figure 6In some embodiments, the first housing 31 further includes at least two baffles 313, each baffle 313 being connected to the bottom wall 311, and the slot 312 being formed by the enclosure of at least two baffles 313. Each baffle 313 includes at least two cross-connected support walls 3131 that are perpendicular to the bottom wall 311, wherein a portion of the support walls 3131 are baffles 31311, and the wall surface of the baffles 31311 forms the groove wall of the corresponding slot 312. The retaining wall 313 is composed of at least two intersecting support walls 3131, each of which is perpendicularly connected to the bottom wall 311. This intersecting structure allows the support walls 3131 to support each other, resulting in high bending stiffness and support strength in multiple directions. Furthermore, the slot 312, formed by the relatively independent retaining walls 313, has retaining walls 31311 as its walls. The retaining walls 31311 and other support walls 3131 support each other, which can more effectively resist the lateral forces exerted on the retaining walls 31311 by the magnetic yoke during insertion and use. The load is controlled by the bottom wall 311. Since the baffle 31311 is vertically connected to the bottom wall 311, the bottom wall 311 can provide stable support for the baffle 31311, reducing the risk of deformation or tilting of the baffle 31311 due to vibration or external force during long-term use. This ensures the stability of the magnetic yoke position and thus the stability of the magnetic suction surface 133 position, thereby reducing the change in the air gap of the magnetic circuit and the drift of the contact parameters, ensuring the reliable and stable function of the product. On this basis, the first magnetic yoke 131 and / or the second magnetic yoke 132 can be designed to be larger as needed to meet the requirements of greater magnetic driving force, while still maintaining high stability.

[0147] In some embodiments, the first magnetic yoke 131 and / or the second magnetic yoke 132 are installed in different slots 312, and the baffle 313 is used to provide a stable mounting contact surface for the corresponding first magnetic yoke 131 or second magnetic yoke 132, thereby improving the stability of the magnetic attraction surface 133 of the first magnetic yoke 131 or second magnetic yoke 132, and thus ensuring that the first magnetic yoke 131 or second magnetic yoke 132 can provide a greater magnetic driving force for the moving magnetic component 12. Since the moving magnetic component 12 can drive the moving contact component 21, when the moving contact component 21 and the stationary contact component 22 are configured to have a large contact gap, the greater driving force of the moving magnetic component 12 can reliably drive the movement of the moving contact component 21, thereby realizing the closing or opening between the moving contact component 21 and the stationary contact component 22, which is suitable for reducing the size of the coil component 11, and thus reducing the size of the switching device 100.

[0148] Furthermore, in the embodiments of this application, baffles 31311 of different directions or lengths can be set according to actual needs to provide better support for the first magnetic yoke 131 and / or the second magnetic yoke 132 and other structures. This application does not limit this. For example, in some embodiments, multiple corresponding baffles 31311 can be set for the more complex first magnetic yoke 131 to better limit the first magnetic yoke 131, while for the simpler second magnetic yoke 132, fewer baffles 31311 can be set to limit the second magnetic yoke 132. In addition, in some embodiments, the baffles 31311 can also be used to strengthen the strength and rigidity of the first housing 31 body, so that the first housing 31 can effectively resist external impacts and provide better protection for internal components.

[0149] In some embodiments, please continue to refer to Figure 6Part of the support wall 3131 is reinforced with ribs 31312. Each rib 31312 is cross-connected to the side of the corresponding baffle wall 31311 facing away from the slot 312. The baffle wall 31311, as the slot wall of the slot 312, directly bears the lateral loads applied to it during the insertion and use of the first magnetic yoke 131 and / or the second magnetic yoke 132. After the first magnetic yoke 131 and / or the second magnetic yoke 132 are inserted into the slot 312, the baffle wall 31311 needs to maintain a stable geometric shape to ensure precise positioning of the first magnetic yoke 131 or the second magnetic yoke 132 in the direction perpendicular to the magnetic attraction surface 133 and the first direction X. In some embodiments, a reinforcement is provided on the side of the baffle wall 31311 facing away from the slot 312. The reinforcing rib 31312 is cross-connected with the retaining wall 31311 and abuts against each other, which is equivalent to building a supporting skeleton on the back of the retaining wall 31311. The cross-connection between the reinforcing rib 31312 and the retaining wall 31311 forms a triangular or grid-like supporting structure. This structure has high rigidity and stability in mechanics and can effectively resist the bending deformation of the retaining wall 31311 when subjected to lateral pressure, thereby significantly improving the bending resistance and rigidity of the retaining wall 313. This allows the retaining wall 31311 to maintain its preset position and shape when bearing the load transmitted by the first magnetic yoke 131 and / or the second magnetic yoke 132, further extending the durability of the slot 312 in long-term use. Furthermore, the reinforcing ribs 31312 provide stable support for the baffle. Since the baffle is used to support the first magnetic yoke 131 and / or the second magnetic yoke 132, it can provide stable mounting contact surfaces for the first magnetic yoke 131 and / or the second magnetic yoke 132 respectively, thereby improving the stability of the magnetic attraction surface 133 of the first magnetic yoke 131 and / or the second magnetic yoke 132, and thus ensuring that the first magnetic yoke 131 and / or the second magnetic yoke 132 can provide a greater magnetic driving force for the moving magnetic component 12. Since the moving magnetic component 12 can drive the moving contact component 21, when the moving contact component 21 and the stationary contact component 22 are configured to have a large contact gap, the greater driving force of the moving magnetic component 12 can reliably drive the movement of the moving contact component 21, thereby realizing the closing or opening between the moving contact component 21 and the stationary contact component 22, which is suitable for reducing the size of the coil component 11, and thus reducing the size of the switching device 100.

[0150] In some embodiments, each reinforcing rib 31312 is perpendicularly connected to the baffle 31311, such that the extending direction of the reinforcing rib 31312 is consistent with the normal direction of the baffle 31311. This perpendicular connection between the reinforcing rib 31312 and the baffle 31311 allows the reinforcing rib 31312 to resist the bending deformation of the baffle 31311 under lateral load in the most direct way. When the first magnetic yoke 131 and / or the second magnetic yoke 132 are inserted into the slot 312 or generate lateral force therein, the baffle... The wall 31311 bears pressure perpendicular to its plane. At this time, the reinforcing rib 31312, perpendicularly connected to the wall 31311, provides the maximum reverse support force in this direction. The perpendicular connection between the wall 31311 and the reinforcing rib 31312 achieves optimal bending resistance and stiffness enhancement with minimal material usage, effectively reducing the risk of the wall 31311 buckling outwards, inwards, or locally bending due to stress during long-term use, and maintaining the flatness and perpendicularity of the slot wall 312. In some embodiments, the first housing 31 is a plastic part. The reinforcing rib 31312 and the wall 311, perpendicularly connected to the bottom wall 311, can also be used to enhance the overall strength of the first housing 31, reduce deformation during the molding process of the first housing 31, and ensure a reliable and precise mounting foundation for the first magnetic yoke 131 and the second magnetic yoke 132.

[0151] In some other embodiments, please refer to Figure 6 Part of the supporting wall 3131 is a connecting wall 31313, which is connected to each reinforcing rib 31312. By setting the connecting wall 31313, the reinforcing ribs 31312 are connected together, so that the originally relatively independent reinforcing ribs 31312 and the connecting wall 31313 are connected and integrated into a whole frame structure. When the retaining wall 31311 is subjected to asymmetrical loads or eccentric loads, the reinforcing ribs 31312 can restrain each other through the connecting wall 31313 and jointly resist torsional deformation, thereby significantly improving the torsional stiffness of the retaining wall 313 in multiple directions and further ensuring the attitude stability of the slot wall 312 under complex stress conditions.

[0152] Specifically, when a certain reinforcing rib 31312 bears a large load, part of the load can be absorbed or transferred through the connecting wall 31313 to another reinforcing rib 31312 connected to it, so that the load is shared by more supporting structures, thereby reducing fatigue or deformation of the local reinforcing rib 31312 due to load concentration and extending the overall service life of the retaining wall 313 structure.

[0153] In some embodiments, the connecting wall 31313 can serve as a retainer 31311 for other retainers 313, and the side wall 316 portion of the first housing 31 can also be used to form the connecting wall 31313. Furthermore, the proximity of the retainer 313 to the side wall 316 reduces structural complexity, and since the housing side wall 316 has high strength, the connecting wall 31313 formed by the side wall 316 also has high strength. This also saves internal space in the housing 3, contributing to the miniaturization of the switching device 100.

[0154] Furthermore, in some embodiments, the connecting wall 31313 is vertically connected to the reinforcing rib 31312, so that a mesh structure is formed between the retaining wall 31311, the connecting wall 31313, and the reinforcing rib 31312. The reinforcing rib 31312 mainly provides bending stiffness to the retaining wall 31311 along its own extension direction, while the connecting wall 31313, which is vertically connected to it, provides further support in a direction perpendicular to the reinforcing rib 31312. This mesh structure enables the back of the retaining wall 313 to distribute the load in multiple directions, thereby more effectively resisting loads from different directions. Moreover, when the retaining wall 31311 is subjected to asymmetrical lateral loads or the first magnetic yoke 131 and / or the second magnetic yoke 132 tend to deflect within the slot 312, the mesh structure formed by the vertically connected reinforcing rib 31312 and the connecting wall 31313 can transfer and distribute the local load along the path of the mesh, thereby significantly improving the overall resistance of the retaining wall 313 to torsional deformation and bending deformation. In some embodiments, the first housing 31 is a plastic part. Therefore, during the molding process of the first housing 31, the connecting wall 31313, the reinforcing rib 31312 and the baffle wall that are perpendicularly connected to the bottom wall 311 can also be used to enhance the overall strength of the first housing 31, reduce the deformation of the first housing 31 during the molding process, and ensure that a reliable and accurate installation foundation is provided for the first magnetic yoke 131 and the second magnetic yoke 132.

[0155] Please refer to Figure 2 , Figure 9 and Figure 12In some embodiments, the permanent magnet 14 is attached between the first magnetic yoke 131 and the second magnetic yoke 132 in a direction parallel to the magnetic attraction surface 133 and perpendicular to the first direction X, and the permanent magnet 14 is attached between the two retaining walls 313 in a direction perpendicular to the magnetic attraction surface 133. In some embodiments, the retaining wall 313 not only provides space for positioning and installation of the first magnetic yoke 131 and the second magnetic yoke 132, but also provides installation space for the permanent magnet 14. The permanent magnet 14 is fitted between the first magnetic yoke 131 and the second magnetic yoke 132, ensuring good magnetic contact between the permanent magnet 14 and the first magnetic yoke 131 and the second magnetic yoke 132, so that the first magnetic yoke 131 and the second magnetic yoke 132 can have opposite magnetism respectively, and the permanent magnet 14 can also be installed in a limited position in the distribution direction of the first magnetic yoke 131 and the second magnetic yoke 132. At the same time, the permanent magnet 14 is attached to the two retaining walls 313 in a direction perpendicular to the magnetic attraction surface 133, so that the retaining walls 313 limit the permanent magnet 14 in the direction perpendicular to the magnetic attraction surface 133, preventing the permanent magnet 14 from being displaced in this direction. This realizes the functional integration of positioning of the first magnetic yoke 131 and the second magnetic yoke 132 and positioning of the permanent magnet 14, and reduces the additional structure in the first housing 31 used to fix the permanent magnet 14.

[0156] In some embodiments, a glue-containing gap is provided between the magnetic yoke and at least one side wall of the mating slot 312 along a second direction Y parallel to the magnetic attraction surface 133 and perpendicular to the first direction X. The glue-containing gap is used to inject and contain glue. When the glue cures, it forms an adhesive layer. This adhesive layer provides additional adhesive force between the side wall of the slot 312 and the magnetic yoke, thereby enhancing the stability of the magnetic yoke's position within the slot 312.

[0157] Please refer to Figure 12In some embodiments, the slot 312 that mates with the first magnetic yoke 131 has a first adhesive wall 3122 on its slot wall, and the space between the first adhesive wall 3122 and the first magnetic yoke 131 is used for injecting adhesive; and / or, the slot 312 that mates with the second magnetic yoke 132 has a first adhesive wall 3122 on its slot wall, and the space between the first adhesive wall 3122 and the second magnetic yoke 132 is used for injecting adhesive. In this process, adhesive is injected between the first adhesive wall 3122 and the first magnetic yoke 131 or the second magnetic yoke 132. The space between the first magnetic yoke 131 and the second magnetic yoke 132 and the corresponding first adhesive wall 3122 forms an adhesive-containing gap, which can be used to accommodate the adhesive. When the adhesive cures, it forms an adhesive layer. This adhesive layer provides additional adhesive force between the side wall of the slot 312 and the first magnetic yoke 131 or the second magnetic yoke 132. Therefore, when the insertion fit between the first magnetic yoke 131 or the second magnetic yoke 132 and the corresponding slot 312 is not stable, the adhesive layer formed by the cured adhesive can further glue and fix the first magnetic yoke 131 or the second magnetic yoke 132, thereby enhancing the stability of the position of the first magnetic yoke 131 or the second magnetic yoke 132 in the slot 312. In practical applications, such as electric vehicles that need to withstand long-term vibration, mechanical positioning and adhesive fixing can achieve a dual fixing effect, thereby more effectively reducing the probability of slight displacement or loosening of the first magnetic yoke 131 or the second magnetic yoke 132 due to continuous vibration, ensuring the installation stability of each component in the first housing 31, and maintaining a precise magnetic coupling air gap between the first magnetic yoke 131 or the second magnetic yoke 132 and the moving magnetic conductive component 12.

[0158] Along the direction from the opening to the bottom wall 311, the first adhesive wall 3122 includes at least two inclined walls 31221 connected in sequence, the inclined walls 31221 being set at an angle relative to the first direction X; from the direction from the opening to the bottom wall 311, the angle between each inclined wall 31221 and the first direction X gradually decreases. Understandably, the first adhesive wall 3122, on a cross section perpendicular to the first direction X, presents a gradually transitioning slope or stepped slope that transitions gently from the opening side to the bottom wall 311 side. This results in a relatively large gap between the first adhesive wall 3122 and the first magnetic yoke 131 or the second magnetic yoke 132 at the opening, providing a larger adhesive space and thus enhancing the connection strength between the first magnetic yoke 131 and the second magnetic yoke 132 and their corresponding first adhesive wall 3122. Conversely, the gap between the first adhesive wall 3122 and its corresponding first magnetic yoke 131 and the second magnetic yoke 132 is relatively small at the bottom wall 311, thereby reducing the impact on the installation and positioning accuracy of the first magnetic yoke 131 and / or the second magnetic yoke 132.

[0159] Therefore, when pouring the adhesive, a larger opening gap facilitates the injection of the adhesive and allows it to smoothly enter the gap under the action of gravity or pressure. As the adhesive flows towards the bottom wall 311, the gap gradually narrows, and the adhesive is subjected to progressively stronger constraints during the flow process. This helps to push the adhesive to fully fill the far end of the gap, reducing air bubbles or incomplete filling caused by a sudden increase in flow resistance, thereby achieving a better bonding and curing effect.

[0160] In some embodiments, the permanent magnet 14 is fitted between the first magnetic yoke 131 and the second magnetic yoke 132 along a direction parallel to the magnetic attraction surface 133 and perpendicular to the first direction X; the first adhesive wall 3122 that cooperates with the first magnetic yoke 131 is located in a groove wall of the first magnetic yoke 131 facing away from the permanent magnet 14, and the first adhesive wall 3122 that cooperates with the second magnetic yoke 132 is located in a groove wall of the second magnetic yoke 132 facing away from the permanent magnet 14.

[0161] The first adhesive wall 3122 is set on the side of the groove wall of the first magnetic yoke 131 facing away from the permanent magnet 14, and the side of the groove wall of the second magnetic yoke 132 facing away from the permanent magnet 14. This means that the area where the adhesive is poured and cured is located on the side of the first magnetic yoke 131 and the second magnetic yoke 132 away from the contact surface of the permanent magnet 14. Therefore, the side where the adhesive is poured is isolated from the contact surface between the permanent magnet 14 and the magnetic yoke, reducing the impact of overflow, shrinkage stress or positional deviation that may occur during the pouring or curing process on the tightness of the contact between the permanent magnet 14 and the first magnetic yoke 131 and the second magnetic yoke 132. This ensures that the permanent magnet 14 and the first magnetic yoke 131 and the second magnetic yoke 132 can maintain a low magnetic resistance contact state, so that the magnetic field generated by the permanent magnet 14 can be efficiently conducted to the magnetic attraction surface 133 of the first magnetic yoke 131 and the second magnetic yoke 132.

[0162] Furthermore, since the adhesive area and the permanent magnet 14 mounting area are located on opposite sides of the first yoke 131 and the second yoke 132 respectively, they do not interfere with each other in space. Therefore, the curing process of the adhesive will not affect the cleanliness and dimensional accuracy of the mating surfaces of the permanent magnet 14 with the first yoke 131 and the second yoke 132, thereby minimizing the impact of the potting on the permanent magnet 14 and the fit between the first yoke 131 and the second yoke 132.

[0163] Please refer to Figure 2 or Figure 9In some embodiments, there are two first magnetic yokes 131 and two second magnetic yokes 132, and each first magnetic yoke 131 and each second magnetic yoke 132 are respectively disposed on both sides of the coil assembly 11 along one of the radial directions. It can be understood that the two sets of first magnetic yokes 131 and second magnetic yokes 132 are distributed on both sides of the coil assembly 11 along the same radial direction, wherein the radial direction is perpendicular to the first direction X and the extension direction of the coil assembly 11. Furthermore, two sets of first magnetic yokes 131 and second magnetic yokes 132 are respectively set on both sides of the coil assembly 11, forming a magnetic circuit structure on both sides. This ensures that the moving magnetic component 12 is subjected to magnetic coupling on both sides during the sliding process, reducing the swaying or lateral force of the moving magnetic component 12 caused by the unilateral magnetic circuit. This makes the sliding of the moving magnetic component 12 on the inner circumference of the coil assembly 11 more stable, and also reduces the frictional resistance between the moving magnetic component 12 and the inner circumferential wall of the coil assembly 11 during the sliding process. It also reduces the risk of wear or jamming caused by eccentric force, thereby improving the mechanical reliability and operational consistency of the moving magnetic component 12 in long-term use. Furthermore, the magnetic attraction portion 121 at one end of the moving magnetic component 12 simultaneously engages with two first magnetic yokes 131 (or two second magnetic yokes 132) located on both sides of the coil component 11, increasing the effective contact area of ​​the magnetic attraction surface 133 and the magnetic attraction portion 121. The two first magnetic yokes 131 and the two second magnetic yokes 132 enable the moving magnetic component 12 to generate a larger initial driving force. Since the moving magnetic component 12 can drive the moving contact component 21, when the moving contact component 21 and the stationary contact component 22 are configured to have a large contact gap, the larger driving force of the moving magnetic component 12 can reliably drive the movement of the moving contact component 21, thereby realizing the closing or opening between the moving contact component 21 and the stationary contact component 22. This is suitable for reducing the size of the coil component 11, thereby reducing the size of the switching device 100, and also helps to achieve a reliable magnetic holding function within the limited space of the miniaturized switching device 100.

[0164] Furthermore, in some embodiments, the first magnetic yoke 131, the second magnetic yoke 132, and each baffle 313 on both sides of the coil assembly 11 are symmetrically arranged about the plane passing through the axial direction of the coil assembly 11 and parallel to the first direction X. Furthermore, the permanent magnet 14 is also symmetrically arranged relative to the above-mentioned plane. When the coil assembly 11 is energized, the electromagnetic attraction between the two magnetic yoke assemblies 13 and the moving magnetic conductor assembly 12 is also symmetrically maintained. This helps to form a uniform magnetic force in the circumferential direction of the moving magnetic conductor assembly 12, reducing the swaying or lateral force of the moving magnetic conductor assembly 12 that may be caused by magnetic field asymmetry. This balanced magnetic force also helps to maintain the centered posture of the moving magnetic conductor assembly 12 in the inner circumference of the coil assembly 11, reducing the contact pressure and uneven wear between the moving magnetic conductor assembly 12 and the inner circumference of the coil assembly 11, thereby improving the mechanical reliability and action consistency of the moving magnetic conductor assembly 12 in the long-term reciprocating process.

[0165] Please refer to Figures 1 to 4In some embodiments, the vacuum insulation component 2 is disposed on one side of the drive component 1 along the operating direction of the moving magnetic component 12; when the moving magnetic component 12 moves in the direction close to the vacuum insulation component 2, one end of the moving magnetic component 12 can abut against the end of the first magnetic yoke 131 close to the vacuum insulation component 2 along the operating direction of the moving magnetic component 12, and the other end of the moving magnetic component 12 can abut against the end of the second magnetic yoke 132 away from the vacuum insulation component 2; when the moving magnetic component 12 moves in the direction away from the vacuum insulation component 2, one end of the moving magnetic component 12 can abut against the end of the first magnetic yoke 131 away from the vacuum insulation component 2 along the operating direction of the moving magnetic component 12, and the other end of the moving magnetic component 12 can abut against the end of the second magnetic yoke 132 close to the vacuum insulation component 2.

[0166] It is understood that the end point of the movement stroke of the moving magnetic component 12 is mechanically limited by the ends of the first magnetic yoke 131 and the second magnetic yoke 132, respectively. When the moving magnetic component 12 moves towards the stationary contact component 22, and the stationary contact component 22 and the moving contact component 21 are in the contact closed position, one end of the moving magnetic component 12 abuts against the end of the first magnetic yoke 131 near the stationary contact component 22 and the other end abuts against the end of the second magnetic yoke 132 away from the stationary contact component 22, thereby achieving abutment and limitation on both sides of the moving magnetic component 12. When the moving contact component 21 moves away from the stationary contact component 22 to the contact open position, the moving contact component 21 directly or indirectly drives the moving magnetic component 12, and the moving magnetic component 12 can abut against and limit its end position through the first magnetic yoke 131 and the second magnetic yoke 132, respectively.

[0167] Therefore, after the moving contact component 21 completes the corresponding disconnection action, the moving magnetic component 12 can form a stable position by mechanically abutting with the first magnetic yoke 131 and the second magnetic yoke 132. Since the moving contact component 21 directly or indirectly abuts with the moving magnetic component 12, and the moving magnetic component 12 is stopped at the end position, the moving contact component 21 can also be stopped at the end position, thereby forming a fixed gap with the stationary contact component 22. The expected contact gap can be achieved and maintained by setting the end position of the moving magnetic component 12. The magnetic holding effect provided by the permanent magnet component 14 is used to jointly maintain the stable state of the contact gap between the stationary contact component 22 and the moving contact component 21, preventing changes in the contact state due to inertia or external vibration, thereby ensuring that the vacuum insulation component 2 can stably maintain the open or closed state.

[0168] In some embodiments, the moving contact assembly 21 includes a moving conductive rod 211 and an elastic component 213. The elastic component 213 acts on the moving magnetic component 12 and / or the moving conductive rod 211. When the coil assembly 11 is forward energized, the magnetic field generated by the coil assembly 11 is in the same direction as the magnetic field of the permanent magnet 14, and together they drive the moving magnetic component 12 to move the moving conductive rod 211 toward the stationary contact assembly 22, so that the moving magnetic component 12 has a larger initial driving force. When the moving conductive rod 211 and the stationary contact assembly 22 are configured to have a larger contact gap, the larger driving force of the moving magnetic component 12 can reliably drive the movement of the moving conductive rod 211, thereby realizing the closure between the moving conductive rod 211 and the stationary contact assembly 22, which is suitable for reducing the size of the coil assembly 11, and thus reducing the size of the switching device 100. During this process, the elastic component 213 stores energy. When the coil assembly 11 is de-energized or reverse energized, the elastic component 213 releases energy and causes the moving conductive rod 211 to move away from the stationary contact assembly 22. Specifically, when the coil assembly 11 is forward energized, the movement of the moving magnetic component 12 causes the elastic component 213 to store elastic potential energy, and the elastic component 213 is in a compressed state at this time. When it is necessary to disconnect the contact, the moving magnetic component 12 loses its magnetism or acquires the opposite magnetism by controlling the coil assembly 11 to be de-energized or reverse energized, and moves in a direction away from the vacuum insulation component 2. At this time, the elastic component 213 releases the stored elastic potential energy, pushing the moving conductive rod 211 and the moving magnetic component 12 away from the stationary contact component 22, so that the contact disconnection action does not depend solely on the reverse energization of the coil assembly 11 or the weakening of the permanent magnet force. Furthermore, when the coil assembly 11 is de-energized, the stationary contact component 22 and the moving conductive rod 211 can be disconnected by relying on the mechanical force of the elastic component 213, which improves the disconnection reliability of the switching device 100 under de-energized conditions and forms a redundant design of electromagnetic drive and mechanical reset.

[0169] Furthermore, when the vacuum insulation component 2 is in the closed state and the drive component 1 has a large magnetic attraction force, the elastic component 213 helps to reduce the driving force required for disconnection in the magnetic circuit of the drive component 1. In some embodiments, this reduces the driving force required for disconnection by the moving magnetic component 12 and the magnetic yoke component 13, thereby saving energy. Moreover, the elastic component 213 and the permanent magnet 14 can stably maintain the disconnected state, improving the stability of the contact gap between the moving contact component 21 and the stationary contact component 22, thereby improving their withstand voltage and enabling them to adapt to different voltage environments.

[0170] In some embodiments, the vacuum insulation component 2 is disposed on one side of the drive component 1 along the direction of movement of the moving magnetic component 12; along the direction of movement of the moving magnetic component 12, the first magnetic yoke 131 is provided with magnetic attraction engagement portions on the side near the vacuum insulation component 2 and the second magnetic yoke 132 is provided with magnetic attraction portions 121 at both ends, which are respectively adapted for magnetic coupling with the magnetic attraction engagement portions of the first magnetic yoke 131 and the second magnetic yoke 132; on the projection plane perpendicular to the direction of movement of the moving magnetic component 12, the magnetic attraction engagement portion of the first magnetic yoke 131... The overlapping area of ​​the projection of the first magnetic yoke 132 and the corresponding magnetic attraction part 121 is the first area, and the overlapping area of ​​the projection of the magnetic attraction part of the second magnetic yoke 132 and the corresponding magnetic attraction part 121 is the second area. When the coil assembly 11 is positively energized, the two magnetic attraction parts 121 are adapted to engage with the magnetic attraction parts of the first magnetic yoke 131 and the second magnetic yoke 132 respectively, and the engagement area of ​​the magnetic attraction part of the first magnetic yoke 131 and the corresponding magnetic attraction part 121 is smaller than the first area; and / or, the engagement area of ​​the magnetic attraction part of the second magnetic yoke 132 and the corresponding magnetic attraction part 121 is smaller than the second area.

[0171] It should be noted that when the static contact component 22 and the moving contact component 21 are in the closed contact state, the first magnetic yoke 131 or the second magnetic yoke 132 is not in contact with the moving magnetic component 12 at the maximum contact area between them. That is, it is not in contact with the first area or the second area. Instead, there is a certain misalignment or only a partial area is in contact and attracted. That is, the actual attraction area of ​​the first magnetic yoke 131 and the second magnetic yoke 132 with the two ends of the moving magnetic component 12 is smaller than the projected overlapping area, thereby reducing the contact area between the first magnetic yoke 131 and the second magnetic yoke 132 and the magnetic attraction part 121. While maintaining the basic integrity of the magnetic circuit, it ensures a high driving force and response speed during the initial closing phase. At the same time, reducing the actual attraction area helps to reduce the magnetic attraction force between the first magnetic yoke 131 and the second magnetic yoke 132 and the magnetic attraction part 121 during attraction. When the switching device 100 needs to switch between open and closed states, it enables the moving magnetic component 12 to disengage or close more smoothly, reducing the action delay or jamming caused by excessive residual driving force, improving the response speed of state switching, and reducing the impact force when the end of the moving magnetic component 12 engages with the first magnetic yoke 131 or the second magnetic yoke 132, ensuring the stability of the first magnetic yoke 131 and the second magnetic yoke 132 installed in the first housing 31.

[0172] Correspondingly, since the moving contact assembly 21 includes a moving conductive rod 211 and an elastic component 213, the moving magnetic component 12 directly or indirectly drives the moving conductive rod 211 to move in the forward direction, and the elastic component 213 is used to accumulate elastic potential energy. When the coil assembly 11 is de-energized or reverse-energized, the elastic component 213 can release the elastic potential energy, driving the moving conductive rod 211 of the moving contact assembly 21 to move in the reverse direction. The moving conductive rod 211 drives the moving magnetic component 12 to move in the reverse direction until the moving magnetic component 12 moves to its limit position. Reducing the actual attraction area helps to reduce the attraction. When the first magnetic yoke 131 and the second magnetic yoke 132 are in contact with the magnetic attraction part 121, the magnetic attraction force between them is such that when the coil assembly 11 is de-energized or reverse-energized to initiate the disconnection action, the elastic force required by the elastic component 213 can be reduced. That is, a smaller elastic component 213 or an elastic component 213 with a smaller elastic coefficient can be configured. This also helps to reduce the driving force required when the stationary contact component 22 and the moving contact component 21 are closed. Therefore, a smaller coil assembly 11 can be configured, which helps to achieve the miniaturization design of the switching device 100.

[0173] In some embodiments, please refer to Figure 11 At least one of the surfaces on which the magnetic attraction mating portion and the corresponding magnetic attraction portion 121 of the first magnetic yoke 131 engage with each other is provided with a protrusion or a recess 1211 to reduce the magnetic attraction area; and / or, at least one of the surfaces on which the magnetic attraction mating portion and the corresponding magnetic attraction portion 121 of the second magnetic yoke 132 engage with each other is provided with a protrusion or a recess 1211 to reduce the magnetic attraction area. For example, see reference. Figure 11 The magnetic attraction part 121 has a recess 1211 on its surface facing the first magnetic yoke 131. In some embodiments, by providing a protrusion or recess 1211 between the first magnetic yoke 131 and the second magnetic yoke 132 and the corresponding magnetic attraction part 121, the magnetic attraction area between them is reduced. The protrusion or recess 1211 makes the attraction surface no longer a complete plane, but only a part of it contacts during attraction, thereby effectively controlling the contact area. Compared with reducing the overall size of the magnetic attraction part 121, this method can accurately set the attraction area while ensuring that the magnetic attraction part 121 has sufficient structural strength and positioning function, and at the same time avoids the decrease in magnetic circuit performance and the decrease in initial driving force during the closing phase caused by the overall size of the magnetic attraction part 121 being too small.

[0174] In some embodiments, the switching device 100 further includes a housing 3, which includes a first housing 31. The first housing 31 has a first mounting portion and a second mounting portion spaced apart. The drive assembly 1 and the vacuum insulation assembly 2 are independently positioned and mounted on the first mounting portion and the second mounting portion, respectively. By providing spaced and independent first and second mounting portions on the first housing 31, the independent positioning of the drive assembly 1 and the vacuum insulation assembly 2 on the housing 3 is achieved. The vacuum insulation assembly 2 and the drive assembly 1 are respectively mounted on the corresponding first and second mounting portions, and their assembly accuracy does not interfere with each other. This facilitates the independent assembly, testing, or adjustment of the vacuum insulation assembly 2 and the drive assembly 1 during the production process. At the same time, it avoids the assembly deviation or dimensional tolerance of either the vacuum insulation assembly 2 or the drive assembly 1 affecting the installation of the other, thereby improving the overall assembly reliability and yield.

[0175] In some embodiments, when the stationary contact component 22 and the moving contact component 21 in the vacuum insulation assembly 2 are in the open position, the limiting component 212 abuts between the elastic component 213 and the transmission member 15, and the moving magnetic component 12 abuts against the first magnetic yoke 131 and / or the second magnetic yoke 132 and stops. Under the action of the elastic component 213, the limiting component 212 abuts between the transmission member 15 and the elastic component 213. Since the moving magnetic component 12 stops, the transmission member 15 connected to it is also in a fixed position, thereby determining the open position of the moving contact component 21. Therefore, by setting the position where the moving magnetic component 12 abuts against the first magnetic yoke 131 and / or the second magnetic yoke 132, the required contact gap can be set and achieved.

[0176] The moving magnetic component 12 obtains a stable stopping position by abutting against the first magnetic yoke 131 and / or the second magnetic yoke 132. The limiting component 212 is pressed between the transmission component 15 and the elastic component 213 by the elastic force of the elastic component 213. The two sides of the limiting component 212 can achieve force balance. At this time, the elastic component 213 is still in a compressed state, so it can abut against one side of the limiting component 212. The transmission component 15 is connected to the moving magnetic component 12. One end of the moving magnetic component 12 abuts against the first magnetic yoke 131 and / or the second magnetic yoke 132, so that the transmission component 15 can receive the reverse force from the first magnetic yoke 131 and / or the second magnetic yoke 132 on the moving magnetic component 12. This reverse force is equal to the elastic force of the elastic component 213, so that the moving magnetic component 12 can abut stably, thereby ensuring that the moving contact component 21 is disconnected from the stationary contact component 22.

[0177] Meanwhile, the elastic force of the elastic component 213 keeps the limiting component 212 in contact with the transmission component 15, ensuring that the transmission component 15 can immediately push the limiting component 212 without any free travel when closing next, thereby improving the action response speed of the switching device 100.

[0178] In some embodiments, the vacuum insulation assembly 2 includes at least two vacuum insulation assemblies 2, each of which includes a moving contact assembly 21 and a stationary contact assembly 22; each moving contact assembly 21 is driven by a moving magnetic conductive assembly 12. Therefore, by simultaneously driving multiple vacuum insulation assemblies 2 with a single moving magnetic conductive assembly 12, the synchronous operation of multiple sets of moving contact assemblies 21 is achieved, eliminating the need to configure an independent moving magnetic conductive assembly 12 for each set of moving contact assemblies 21, thereby reducing the number of parts and the space occupied inside the housing 3.

[0179] In addition, each moving contact component 21 shares the same moving magnetic component 12, which ensures that the closing and opening timing of multiple moving contact components 21 and stationary contact components 22 is highly consistent. This makes it suitable for application scenarios that require switching multiple circuits at the same time, while reducing the risk of circuit logic errors that may be caused by asynchronous operation of multiple contact points.

[0180] In some embodiments, at least one vacuum insulation component 2 is used as an auxiliary switch to monitor the on / off state of other vacuum insulation components 2.

[0181] Since the moving magnetic component 12 can synchronously drive the switching states of multiple vacuum insulation components 2, the state of one vacuum insulation component 2 can reflect the state of the other vacuum insulation components 2. By setting one vacuum insulation component 2 as an auxiliary switch, the contact state of the auxiliary switch maintains a strict correspondence with the contact state of the other vacuum insulation components 2. There is no need to set up an additional independent detection mechanism. The actual on / off state of the other vacuum insulation components 2 can be accurately determined by the feedback of the electrical signal of the auxiliary switch. The contact capacity of the auxiliary switch can be independently designed according to the needs of the signal circuit and decoupled from the high voltage and high current requirements of the main circuit. Thus, while realizing the status monitoring function, the design complexity and cost of the monitoring circuit are reduced.

[0182] In some embodiments, each vacuum insulation component 2 is arranged in a direction perpendicular to the movement direction of the moving magnetic component 12, and the auxiliary switch is located on the outermost side. It can be understood that the auxiliary switch located on the outer side has no large current carrying requirement, so its volume can be made smaller, the driving force of the driving component 1 on it is smaller, and the reaction force it receives is also smaller. That is, the driving component 1, specifically the transmission component 15 located on the outer side, experiences less force and a smaller deflection torque, making it less prone to breakage, thereby ensuring that the moving magnetic component 12 can move smoothly.

[0183] Multiple vacuum insulation components 2 are arranged perpendicular to the direction of movement of the moving magnetic component 12, enabling the moving magnetic component 12 to simultaneously drive all vacuum insulation components 2 during movement. Furthermore, the vacuum insulation components 2 do not overlap in their arrangement direction, facilitating wiring and heat dissipation. The auxiliary switch is located on the outermost side, providing greater spatial isolation from other main vacuum insulation components 2. This reduces the risk of electromagnetic interference from the high voltage and high current of the main vacuum insulation components 2 to the auxiliary switch signal circuit. Simultaneously, the outermost position facilitates connection of the auxiliary switch's leads to external monitoring circuits, improving maintenance and repair convenience. In some embodiments, the switching device 100 includes a direct-acting magnetic drive mechanism and a vacuum tube. The applicant has found that the direct-acting magnetic drive mechanism includes a pushing part, and the vacuum tube includes a moving conductive rod 211. The pushing part and the moving conductive rod 211 are fixedly connected. When the pushing part and the moving conductive rod 211 are fixedly connected and installed in the same installation position, if either the pushing part or the moving conductive rod 211 has a processing error or an installation error, it will cause the two to be unable to be positioned or to be difficult to be accurately positioned, and the moving conductive rod 211 and the pushing part will not be coaxial. At this time, the pushing part and the moving conductive rod 211 will be subjected to rotational torque or deflection force, which will cause the movement of the pushing part or the moving conductive rod 211 to be easily jammed or fail. Therefore, the manufacturing precision and installation precision requirements of the pushing part and the moving conductive rod 211 are very high.

[0184] Please continue to refer to Figures 1 to 4 In some embodiments, the switching device 100 includes a housing 3, a vacuum insulation component 2, and a drive component 1. The housing 3 includes a first housing 31. The vacuum insulation component 2 includes a shell 23 and a corresponding movable contact component 21. The shell 23 is positioned and installed on the first housing 31, and the movable contact component 21 is linearly movable and installed on the shell 23. The drive component 1 is positioned and installed on the first housing 31. The drive component 1 includes a drive part that can move along the direction of movement of the movable contact component 21 and is used to drive the movable contact component 21 to move relative to the shell 23 along the direction of movement of the movable contact component 21. The movable contact component 21 and the drive part are separately provided.

[0185] The housing 3 includes a first housing 31, and the outer shell 23 of the vacuum insulation component 2 is positioned and installed on the first housing 31. The drive component 1 is also positioned and installed on the first housing 31. It can be understood that after the outer shell 23 is installed on the first housing 31, it is fixed relative to the first housing 31. After the drive component 1 is installed on the first housing 31, the fixed parts of the drive component 1, excluding the moving parts, are fixed relative to the first housing 31. Both the vacuum insulation component 2 and the drive component 1 use the first housing 31 as a common mounting base, thereby determining the relative positions between the vacuum insulation component 2 and the drive component 1. Therefore, by uniformly positioning and installing the vacuum insulation component 2 and the drive component 1 through the first housing 31, the cumulative tolerance caused by assembling in different spaces can be reduced, providing a structural basis for the consistency of the action direction between the drive part and the moving contact component 21. Furthermore, the vacuum insulation component 2 and the drive component 1 can be installed separately, reducing connection complexity and installation difficulty.

[0186] The vacuum insulation assembly 2 includes a housing 23 and a moving contact assembly 21. The housing 23 is positioned and installed on the first housing 31, that is, the housing 23 is fixedly installed relative to the first housing 31. Part of the moving contact assembly 21 is movably disposed inside the housing 23, and another part is located outside the housing 23. The inside of the housing 23 is a vacuum environment, so that the part of the moving contact assembly 21 that is in contact with the stationary contact assembly 22 can be closed or opened in the vacuum environment, which improves the insulation performance of the switching device 100 during the closing and opening process. The part of the moving contact assembly 21 located outside the housing 23 can be driven by the driving part to move relative to the housing 23 along its direction of movement.

[0187] The moving contact component 21 and the driving part are separate structures, that is, the moving contact component 21 and the driving part are mechanically independent of each other, and the force is transmitted along the moving direction of the moving contact component 21 only through contact or abutment during the driving process. In the assembly process, the vacuum insulation component 2 and the drive component 1 can be independently assembled to the first housing 31 without simultaneously adjusting the relative positions of the moving contact component 21 and the drive component. This simplifies the assembly process and improves assembly efficiency. In actual use, a certain error is allowed between the moving contact component 21 and the drive component. That is, when there is a manufacturing error in the structure of the first housing 31 used to position the vacuum insulation component 2 and the drive component 1, and the axial direction of the moving contact component 21 and the drive component are slightly offset, the drive component, which is separately set from the moving contact component 21, can still maintain effective drive cooperation with the moving contact component 21. Furthermore, this ensures that the moving contact component 21 and / or the drive component are only subjected to forces along their direction of movement, and not to rotational torque, so that the moving contact component 21 and the drive component will not deflect relative to each other. Correspondingly, the reaction force from the moving contact component 21 to the drive component is also along the direction of movement of the moving contact component 21, and will not be affected by rotational torque, thus preventing movement jamming or failure.

[0188] In some embodiments, the drive unit is connected to the moving magnetic component 12 or the drive unit is a component of the moving magnetic component 12. The drive component 1 includes a coil component 11. The moving magnetic component 12 can be linearly and movably slidably disposed on the inner periphery of the coil component 11. When there is an installation error in the installation of the vacuum insulation component 2 and the drive component 1 on the first housing 31, since the moving magnetic component 12 will not be subjected to the rotational torque directly or indirectly generated by the automatic contact component 21, the moving magnetic component 12 only has a travel distance along the movement direction of the moving contact component 21 inside the coil component 11, reducing the jamming or movement failure caused by the axial rotation of the moving magnetic component 12 relative to the coil component 11.

[0189] Furthermore, since the outer shell 23 is fixed to the first shell 31, the drive unit only needs to drive the moving contact component 21 to achieve the closing and opening with the stationary contact component 22. The drive unit is subjected to less force, which can also reduce the situation of the moving magnetic component 12 getting stuck or failing in movement relative to the coil component 11.

[0190] Specifically, in some embodiments, the driving component 1 includes a transmission component 15, and the moving contact component 21 includes a moving conductive rod 211 and a limiting component 212. The limiting component 212 is sleeved on the moving conductive rod 211, wherein the limiting component 212 can indirectly drive the movement of the moving conductive rod 211. The transmission component 15 and the limiting component 212 are separately configured, so that the transmission component 15 and the limiting component 212 are completely independent in mechanical structure, so that the corresponding driving component 1 and vacuum insulation component 2 can be installed separately. Even if the cooperation between the transmission component 15 and the limiting component 212 is not coaxial and there is a certain assembly error, stable mutual driving between the two can still be achieved.

[0191] In some embodiments, the vacuum insulation component 2 and the drive component 1 are adapted to be independently installed on the first housing 31, making them completely independent in mechanical structure. Their positional association is established solely through the first housing 31, making the vacuum insulation component 2 and the drive component 1 relatively independent. Therefore, during the production, testing, or subsequent maintenance of the switching device 100, the vacuum insulation component 2 and the drive component 1 can be independently installed, disassembled, or replaced. For example, if an abnormality is found in the performance of the drive component 1 during testing, it can be removed from the first housing 31 for repair or replacement without disassembling the vacuum insulation component 2; and vice versa. The relative independence between the vacuum insulation component 2 and the drive component 1 reduces maintenance costs and the requirements for rework processes, thus improving product maintainability.

[0192] In some embodiments, the first housing 31 has an opening through which both the vacuum insulation component 2 and the drive component 1 are mounted. The vacuum insulation component 2 and the drive component 1 are mounted perpendicular to the direction of movement of the movable contact component 21. The opening in the first housing 31, along with the fact that both the vacuum insulation component 2 and the drive component 1 are mounted perpendicular to the direction of movement of the movable contact component 21, allows the vacuum insulation component 2 and the drive component 1 to be sequentially or simultaneously inserted into the first housing 31 from the same direction through the same opening. Compared to structures requiring separate installation from multiple different directions, this unified assembly direction simplifies the assembly process, reduces the need for workpiece flipping or tooling changes during assembly, and, because the opening is perpendicular to the direction of movement of the movable contact component 21, operators or automated equipment can feed the components into the first housing 31 perpendicular to the direction of movement of the movable contact component 21 during assembly. Therefore, there is no interference with the movement paths of the movable contact component 21 and the drive component during assembly, reducing the risk of interference or damage to moving parts such as the movable contact component 21 or the drive component during assembly. Furthermore, compared to mounting the moving contact component 21 on the first housing 31 along the direction of movement of the moving contact component 21, it is more convenient to set corresponding positioning structures for the vacuum insulation component 2 and the drive component 1, so that the housing 23 and other fasteners 214 of the vacuum insulation component 2 and the fixed part of the drive component 1 will not move along the direction of movement of the moving contact component 21 and the drive part, thus achieving a better positioning and installation effect.

[0193] In some embodiments, the fixed portions of the housing 23 and the drive assembly 1 are both fixed relative to the first housing 31 in a plane perpendicular to the opening direction. The opening direction is the normal to the plane containing the opening. The moving contact assembly 21 reciprocates within the housing 23 along its direction of movement to achieve closure or opening with the stationary contact assembly 22. The housing 23 is fixed relative to the first housing 31, meaning it maintains a defined spatial position during the movement of the moving contact assembly 21, providing a stable mounting base for the moving contact assembly 21. This ensures that the contact gap between the moving contact assembly 21 and the stationary contact assembly 22 always meets a set value and remains unchanged when disconnected, thereby enabling the moving contact assembly 21 and the stationary contact assembly 22 to have good withstand voltage and to be used in different voltage environments. Meanwhile, the fixed part of the drive assembly 1, excluding the moving parts, is fixed relative to the first housing 31. It should be noted that the fixed part of the drive assembly 1 includes the coil assembly 11, the magnetic yoke assembly 13, and the permanent magnet 14. The fixed part of the drive assembly 1 is fixedly installed relative to the first housing 31 along the moving direction of the moving contact assembly 21. That is, the coil assembly 11, the magnetic yoke assembly 13, and the permanent magnet 14 are all fixedly installed relative to the first housing 31, providing a stable motion foundation for the drive unit installed on the fixed part.

[0194] In some embodiments, the moving magnetic component 12 is used to directly or indirectly drive the moving conductive rod 211 to move forward, and the elastic component 213 is used to accumulate elastic potential energy. When the coil component 11 is de-energized or reverse-energized, the elastic component 213 can release the elastic potential energy, driving the moving conductive rod 211 of the moving contact component 21 to move in the opposite direction, thereby moving away from the stationary contact component 22. This causes the contact gap between the moving contact component 21 and the stationary contact component 22 to gradually increase until the moving magnetic component 12 moves to the limit position with the magnetic yoke component 13 fixedly installed in the first housing 31. Therefore, by controlling the fixed parts of the housing 23 and the drive component 1 to be fixed relative to the first housing 31, it is beneficial to ensure that the contact gap between the stationary contact component 22 and the moving contact component 21 meets the set value without changing, thereby enabling the stationary contact component 22 and the moving contact component 21 to have good withstand voltage strength, ensuring that the stationary contact component 22 and the moving contact component 21 can be used in different voltage environments respectively.

[0195] In some embodiments, the first housing 31 is provided with a positioning groove extending along the direction of movement of the movable contact component 21; the outer shell 23 is positioned and installed in the positioning groove and is limited by the positioning groove in a direction perpendicular to the opening direction and the direction of movement of the movable contact component 21. Therefore, when the outer shell 23 is installed in the first housing 31 through the opening, the outer shell 23 cooperates with the positioning groove so that the positioning groove limits the outer shell 23 in both the direction perpendicular to the opening direction and the direction of movement of the movable contact component 21, thereby determining the position of the outer shell 23 in the first housing 31.

[0196] In the example above, please refer to Figure 21 The first housing 31 includes a first partition wall 314 and a third partition wall 317. The first partition wall 314 is provided with a first groove 3141, and the third partition wall 317 is provided with a third groove 3171. The first partition wall 314 and the third partition wall 317 are spaced apart along the moving contact assembly 21. The positioning groove includes the first groove 3141 and the third groove 3171. Therefore, when the outer shell 23 is installed on the first housing 31, the outer shell 23 is installed in the first groove 3141 and the third groove 3171 respectively along the opposite ends of the moving contact assembly 21, so that the first partition wall 314 and the third partition wall 317 respectively support the outer wall surfaces of the two ends of the outer shell 23, so that the outer shell 23 can be installed upright, and the outer wall of the outer shell 23 can be engaged in the positioning groove. The installation method is simple and can achieve the limitation of the two ends of the outer shell 23.

[0197] In some embodiments, the vacuum insulation component 2 is disposed on one side of the drive component 1 along the direction of movement of the movable contact component 21. That is, the drive part of the drive component 1 and the movable contact component 21 in the vacuum insulation component 2 are located on opposite sides of the direction of movement of the movable contact component 21, and are arranged adjacent to each other.

[0198] Since the drive unit is used to drive the movable contact assembly 21 along the direction of movement of the movable contact assembly 21, the driving force generated by the drive unit can be transmitted to the movable contact assembly 21 in the most direct way, without the need for a steering or bias transmission mechanism. Compared with the structure in which the drive assembly 1 and the vacuum insulation assembly 2 are arranged side by side or at an angle, the component force loss and torque conversion during the transmission of driving force are reduced, which helps to improve driving efficiency. At the same time, it reduces the impact of additional friction and fit clearance introduced by the steering or bias transmission mechanism on the accuracy of operation. Furthermore, by setting the vacuum insulation assembly 2 on one side of the drive assembly 1 along the direction of movement of the movable contact assembly 21, the overall structure of the switching device 100 is linearly arranged along the direction of movement of the movable contact assembly 21. Since the switching device 100 needs to meet the requirement of smaller size, this linear layout is conducive to controlling the length of the switching device 100 within the direction of movement of the movable contact assembly 21. In the radial direction perpendicular to the direction of movement of the movable contact assembly 21, the space occupied by the vacuum insulation assembly 2 and the drive assembly 1 overlaps, avoiding the simultaneous expansion of volume in multiple directions and achieving efficient use of space.

[0199] It is understood that in some embodiments, the driving part and the moving contact component 21 are in contact and connected in directions other than the direction of movement of the moving contact component 21. For example, in a direction perpendicular to the direction of movement of the moving contact component 21, the driving part and the moving contact component 21 are connected to each other or create a limit. In this case, if either the driving part or the moving contact component 21 has an error or an installation error, it may cause the driving part and the moving contact component 21 to be offset or skewed, making it impossible to install them, or making it easy for one of them to get stuck during movement after installation.

[0200] In some embodiments of this application, the driving part and the movable contact component 21 only have contact along the moving direction of the movable contact component 21. That is, the interaction between the driving part and the movable contact component 21 is limited to the direction of the moving axis of the movable contact component 21. During the driving process, the force applied by the driving part to the movable contact component 21 only includes the positive driving force or thrust along the moving direction, and does not generate a lateral component force perpendicular to the moving direction of the movable contact component 21. Compared with structures where there may be multi-directional contact or cooperation between the driving part and the movable contact component 21, this unidirectional contact along the moving direction of the movable contact component 21 reduces the swaying, tilting or rotation of the movable contact component 21 within the housing 23 caused by lateral force or rotational torque, thereby reducing additional friction with the inner wall of the housing 23. This makes the movement trajectory of the movable contact component 21 more strictly limited by the guiding structure of the housing 23. This improves the positional accuracy and consistency of contact breaking and closing. Correspondingly, the reaction force applied by the moving contact component 21 to the driving part only includes the reverse driving force or thrust along the direction of movement of the moving contact component 21, so that the driving part is not subjected to lateral force or rotational torque, thereby enabling it to move smoothly along the direction of movement of the moving contact component 21. Furthermore, in the embodiment where the driving part is driven by the moving magnetic component 12 and the moving magnetic component 12 is slidably disposed on the inner periphery of the coil component 11, this design also reduces the swaying, tilting, and rotation caused by lateral force or rotational torque between the moving magnetic component 12 and the inner wall of the coil component 11, thereby reducing the friction between the moving magnetic component 12 and the inner wall of the coil component 11, reducing the jamming phenomenon and power loss when the moving magnetic component 12 moves, thereby improving the smoothness and stability of the driving part when it moves.

[0201] Specifically, in some embodiments, the drive assembly 1 includes a transmission member 15, which is connected to the moving magnetic component 12. The moving contact assembly 21 includes a limiting component 212. The transmission member 15 and the limiting component 212 only have contact along the movement direction of the moving conductive rod 211. On the one hand, the transmission member 15 and the limiting component 212 are completely independent in mechanical structure, so that the corresponding drive assembly 1 and vacuum insulation assembly 2 can be installed separately. On the other hand, no lateral force or rotational torque deviating from the axial direction is generated between the transmission member 15 and the limiting component 212, so that both the moving contact assembly 21 and the transmission member 15 can move along the movement direction of the moving contact assembly 21, reducing jamming and power loss during the movement of the moving contact assembly 21 and the moving magnetic component 12, and improving movement stability.

[0202] In some embodiments, please refer to Figure 2 , Figures 13 to 14The movable contact component 21 includes: a movable conductive rod 211, a limiting component 212, and an elastic component 213. The movable conductive rod 211 is movably disposed on the housing 23. The limiting component 212 is sleeved on the outer periphery of the portion of the movable conductive rod 211 that extends out of the housing 23. The driving part drives the movable conductive rod 211 to move by abutting against the limiting component 212. The elastic component 213 acts on the limiting component 212 to make the limiting component 212 abut against the driving part.

[0203] It is understood that the movable conductive rod 211 moves relative to the housing 23 and abuts or separates from the stationary contact assembly 22 to realize the opening or closing of the switching device 100. The movable conductive rod 211 has a portion located outside the housing 23. The limiting assembly 212 is sleeved on the outer periphery of the movable conductive rod 211 away from the stationary contact assembly 22, and the limiting assembly 212 is used to abut against the driving part. One end of the elastic assembly 213 acts directly or indirectly on the limiting assembly 212 so that the limiting assembly 212 abuts against the driving part. Furthermore, the driving part does not need to directly contact the movable conductive rod 211, but indirectly drives the movable conductive rod 211 to move by abutting against the limiting assembly 212.

[0204] In some embodiments, the limiting component 212 can be configured according to the contact method of the driving part (such as planar contact, line contact, or specific contour contact), without being limited by the shape and material of the moving conductive rod 211 itself; while the elastic component 213 acts on the limiting component 212, keeping the limiting component 212 and the driving part in contact, that is, during the operation of the switching device 100, regardless of whether the driving part is in a stationary or moving state, the elastic force applied by the elastic component 213 keeps the limiting component 212 in continuous contact with the driving part and keeps the limiting component 212 in contact with the driving part. There are no unsupported positions in the circumferential direction between the drive unit and the moving contact component 21, thereby eliminating the movement gap between the drive unit and the moving contact component 21 and making the force on each position of the moving contact component 21 more balanced in the circumferential direction. This makes the movement of the moving component smoother, reduces the risk of jamming, and ensures contact reliability and low temperature rise. It also allows the moving contact component 21 and the stationary contact component 22 to make centered contact and have good breaking performance. In addition, it allows the drive unit to directly transmit driving force without overcoming the free travel when starting the driving action, thereby improving the immediacy of the driving response and the synchronization of the action.

[0205] Furthermore, when the vacuum insulation component 2 and the drive component 1 are misaligned to a certain extent during assembly due to processing or installation errors, the limiting component 212 can float or tilt within a certain range around the outer periphery of the moving conductive rod 211, while the elastic component 213 can maintain continuous contact between the limiting component 212 and the drive unit, so that the drive unit can still reliably push the limiting component 212 and drive the moving conductive rod 211 to move along the direction of movement of the moving conductive rod 211. It has a certain self-adaptive matching effect, so that there will be no position where the limiting component 212 cannot contact the drive unit, and ensure that the moving conductive rod 211 is uniformly stressed, ensuring reliable contact performance. At the same time, it also makes the drive unit more uniformly stressed, thereby minimizing the generation of deflection torque, making the linear movement of the drive unit smoother, reducing the assembly accuracy requirements, and improving the assembly yield of the switch device 100 production process.

[0206] In some embodiments, the vacuum insulation assembly 2 further includes a stationary contact assembly 22 fixedly mounted on the housing 23, with the driving part and the limiting assembly 212 abutting on the side away from the stationary contact assembly 22 to drive the moving conductive rod 211 toward the stationary contact assembly 22; an elastic assembly 213 abutting on the side of the limiting assembly 212 toward the stationary contact assembly 22 to keep the limiting assembly 212 and the driving part abutting; or, the elastic assembly 213 abutting on the side of the limiting assembly 212 toward the stationary contact assembly 22 to keep the limiting assembly 212 and the driving part abutting and the limiting assembly 212 being able to push the moving conductive rod 211 to break relative to the stationary contact assembly 22.

[0207] In some embodiments, the driving unit and the limiting component 212 abut against the side away from the stationary contact component 22, thereby facilitating direct driving of the limiting component 212. In this case, the elastic component 213 abuts against the limiting component 212, enabling the driving unit to drive the limiting component 212. The limiting component 212 then drives the elastic component 213, ultimately causing the elastic component 213 to drive the moving conductive rod 211 toward the stationary contact component 22, thus achieving the closure of the moving conductive rod 211 and the stationary contact component 22. The driving force provided by the driving unit and the elastic force provided by the elastic component 213 form opposing forces on the limiting component 212. When the driving unit pushes the limiting component 212 toward the stationary contact component 22, the limiting component 212 overcomes the elastic force of the elastic component 213, causing the elastic component 213 to drive the moving conductive rod 211 in the closing direction, while simultaneously further compressing the elastic component 213 to store energy.

[0208] In other embodiments, when the driving force is removed from the driving unit, the elastic potential energy stored in the elastic component 213 is released, pushing the limiting component 212 to move away from the stationary contact component 22 and to maintain contact with the driving unit. In the example provided in this embodiment, the elastic component 213 is also used to drive the moving conductive rod 211 to reset to the disconnected position. The elastic component 213 acts on the limiting component 212 on the one hand, so that the limiting component 212 and the driving unit are always in contact. On the other hand, the elastic component 213 also acts on the moving conductive rod 211 so that the moving conductive rod 211 can be disconnected relative to the stationary contact component 22. In addition, in this embodiment, the closing driving function and the opening reset function of the switching device 100 are separated from each other and do not interfere with each other. Each can be optimized independently.

[0209] Further, please refer to Figure 2 and Figure 13 In some embodiments, the elastic component 213 includes a first elastic element 2131, which is sleeved on the movable conductive rod 211. Along the movement direction of the movable conductive rod 211, one end of the first elastic element 2131 directly or indirectly abuts against the outer shell 23, and the other end acts on the limiting component 212 to make the limiting component 212 abut against the driving part. The first elastic element 2131 is sleeved on the outer periphery of the movable conductive rod 211, so that the direction of the elastic force is substantially coincident with the axis of the movable conductive rod 211. When the first elastic element 2131 acts on the limiting component 212, the generated elastic force is distributed circumferentially along the movable conductive rod 211, reducing the off-center load torque caused by the elastic force deviating from the axis of the movable conductive rod 211, making the transmission of the elastic force more direct and efficient.

[0210] Furthermore, by fitting the first elastic element 2131 onto the portion of the moving conductive rod 211 that extends out of the housing 23, the space around the moving conductive rod 211 is fully utilized. There is no need to set up a separate installation area for the first elastic element 2131 inside the housing 23, which reduces the space occupied in the radial direction of the moving conductive rod 211. This helps to achieve miniaturization of the switching device 100 and makes the layout of the vacuum insulation assembly 2 more compact.

[0211] Correspondingly, in some embodiments, the first elastic element 2131 abuts against the portion of the limiting component 212 near its outer periphery. The limiting component 212 is sleeved on the outer periphery of the movable conductive rod 211, and its structure is generally arranged around the movable conductive rod 211. When the first elastic element 2131 abuts against the portion of the limiting component 212 near its outer periphery, the elastic force acts on the radially distal end of the limiting component 212, rather than being concentrated in the central region near the movable conductive rod 211.

[0212] Since the first elastic element 2131 is sleeved on the outer periphery of the moving conductive rod 211, the annular contact between its end and the outer periphery of the limiting component 212 makes the elastic force more evenly distributed along the circumference. Compared with the point contact or small area contact where the elastic element only abuts against the central area of ​​the limiting component 212, the contact between the first elastic element 2131 and the outer periphery of the limiting component 212 can disperse the elastic force to the entire circumferential edge of the limiting component 212, which facilitates the continuous contact between the limiting component 212 and the driving part.

[0213] Therefore, when the vacuum insulation component 2 and the drive component 1 are relatively misaligned due to manufacturing or installation errors, the limiting component 212 is misaligned relative to the moving conductive rod 211 under the action of the first elastic element 2131. That is, when the moving conductive rod 211 and the drive part are not coaxial, the limiting component 212 can still generate an offset relative to the moving conductive rod 211, so that the limiting component 212 can still fully contact the drive part under the action of the first elastic element 2131 and reduce the phenomenon of partial suspension when it cannot make contact. This allows it to better withstand the force with the drive part, thereby transmitting the driving force or elastic force and reducing the problem of jamming or movement failure when the drive part moves. In some embodiments, this means reducing the problem of jamming or movement failure when the moving magnetic component 12 is running.

[0214] Please refer to Figure 2 and Figure 13 In some embodiments, the limiting component 212 includes a gasket 2122, which is sleeved on the outer periphery of the movable conductive rod 211 and abuts against the first elastic member 2131 and the driving part. The gasket 2122 can be independently disposed between the first elastic member 2131 and the driving part. In some embodiments, the gasket 2122 is adapted to abut against the movable conductive rod 211 under the action of the first elastic member 2131 and drive the movable conductive rod 211 to move, specifically to drive the movable conductive rod 211 away from the stationary contact component 22. The gasket 2122 has a small dimension along the axial direction of the movable conductive rod 211, so the gasket 2122 is axially... The smaller size of the pad 2122 that mates with the moving conductive rod 211 makes it easier to tilt relative to the moving conductive rod 211. This ensures that when closed, the pad 2122 can fully contact the actuating mechanism 1 under the action of the first elastic element 2131, reducing any uncontacted positions. This ensures better contact with the actuating mechanism 1 to receive force and transmit driving force, and ensures that the actuating mechanism 1 can be evenly stressed, reducing the problem of jamming or movement failure when the actuating mechanism 1 is in motion. It also ensures that when disconnected, the pad 2122 can be aligned with the moving conductive rod 211 in a timely manner and apply force evenly to the moving conductive rod 211 in the circumferential direction, so as to achieve stable axial movement of the moving conductive rod 211.

[0215] Furthermore, in the above scheme, the gasket 2122 can be independently configured according to the requirements of contact and force transmission. For example, materials with good wear resistance and compressive strength can be selected, or specific surface treatment processes can be adopted. The other structures of the limiting component 212 can focus on achieving sliding fit and axial positioning functions with the moving conductive rod 211. The separate configuration of the gasket 2122 and other structures of the limiting component 212 helps to optimize the material selection and manufacturing process of each part, improving the reliability and economy of the overall structure. Moreover, the reciprocating contact and relative movement between the drive unit and the limiting component 212 during operation is a relatively concentrated wear area. By setting the gasket 2122 as the direct contact interface, the wear mainly occurs on the relatively independent and easily replaceable or low-cost component of the gasket 2122, avoiding direct wear between the drive unit and the main structure of the limiting component 212. When the gasket 2122 wears out after long-term use, only the gasket 2122 needs to be replaced, without replacing the entire limiting component 212, reducing maintenance costs.

[0216] In some embodiments, the elastic component 213 further includes a second elastic element 2132. Along the direction of movement of the movable conductive rod 211, one end of the second elastic element 2132 abuts against the movable conductive rod 211, and the other end abuts against the limiting component 212. The limiting component 212 drives the movable conductive rod 211 to move through the second elastic element 2132. When the movable conductive rod 211 contacts the stationary contact component 22, the driving part drives the limiting component 212 to abut against the second elastic element 2132 and form an overtravel relative to the movable conductive rod 211, so that the second elastic element 2132 deforms and provides contact pressure to the movable conductive rod 211. When the limiting component 212 is driven by the driving unit, it drives the moving conductive rod 211 to move through the second elastic element 2132. That is, the driving force provided by the driving unit is transmitted to the moving conductive rod 211 through the limiting component 212 and the second elastic element 2132. Before the moving conductive rod 211 contacts the stationary contact component 22, the second elastic element 2132 drives the moving conductive rod 211 to move as a force transmission element. After the moving conductive rod 211 contacts the stationary contact component 22, the driving unit can continue to move for a certain overtravel period to further compress the second elastic element 2132. When the contact points of the moving conductive rod 211 and the stationary contact component 22 experience a certain amount of wear, the driving unit can automatically compensate for the wear within the overtravel range, keeping the second elastic element 2132 in a compressed state, maintaining stable contact pressure, and helping to extend the electrical life of the switching device 100.

[0217] In addition, the second elastic member 2132 is also used to abut against the limiting component 212, so that the limiting component 212 can fully abut against the driving part without creating any unreachable suspended parts. Even if the limiting component 212 is deviated from the moving conductive rod 211 due to installation errors or other reasons, the limiting component 212 can still generate a more uniform abutting force on each position of the moving conductive rod 211 in the circumferential direction through the second elastic member 2132, ensuring the reliability of contact with the moving conductive rod 211, thereby ensuring that the moving conductive rod 211 can move smoothly along its axial direction.

[0218] Please refer to Figure 2 , Figures 13 to 14 In some embodiments, the portion of the movable conductive rod 211 extending out of the outer casing 23 is provided with a stepped surface 2111 facing away from the stationary contact assembly 22. The second elastic member 2132 is sleeved on the outer periphery of the movable conductive rod 211 and abuts against the stepped surface 2111, so that the stepped surface 2111 of the movable conductive rod 211 provides an installation position for the second elastic member 2132. After the second elastic member 2132 is sleeved on the movable conductive rod 211, one end of it directly abuts against the stepped surface 2111, so that the elastic force of the second elastic member 2132 can directly act on the movable conductive rod 211, eliminating the fitting gap or additional deformation that may be introduced by the intermediate force transmission component, and ensuring that the contact pressure generated by the second elastic member 2132 can be efficiently and accurately transmitted to the movable conductive rod 211, and then act on the contact surface between the movable conductive rod 211 and the stationary contact assembly 22. Furthermore, since the stepped surface 2111 is part of the structure of the moving conductive rod 211 itself, there is no need to set up additional independent positioning parts or fixing structures. After the second elastic member 2132 is sleeved on the moving conductive rod 211, one end of it naturally abuts against the stepped surface 2111, and the other end abuts against the limiting component 212. During assembly, it is only necessary to sleeve the second elastic member 2132 onto the moving conductive rod 211 to the position of the stepped surface 2111. No additional axial positioning or fixing operations are required, which reduces the number of parts, simplifies the assembly process, and helps to achieve efficient and reliable assembly in the limited space of the miniaturized switching device 100.

[0219] In some embodiments, the first elastic element 2131 is sleeved around the outer periphery of the second elastic element 2132, such that the two elastic elements form a nested arrangement in the radial direction of the moving conductive rod 211, rather than being arranged in series along the axial direction of the moving conductive rod 211 or arranged radially side by side. Since the first elastic element 2131 is used to maintain the continuous contact between the limiting assembly 212 and the driving part, and the second elastic element 2132 is used to provide contact pressure, their functions are different but both need to be arranged around the moving conductive rod 211. By coaxially sleeved, the first elastic element 2131 and the second elastic element 2132 share the same axial space, reducing the size occupied and facilitating the miniaturization design of the switching device 100.

[0220] Furthermore, the first elastic element 2131 and the second elastic element 2132 are coaxially arranged so that the direction of their elastic force is the same as the axis of the moving conductive rod 211. The elastic force of the first elastic element 2131 acting on the limiting component 212 and the elastic force of the second elastic element 2132 acting on the moving conductive rod 211 are transmitted in the same direction, avoiding additional bending moment or lateral component force caused by force line deviation. During the closing and opening of the switching device 100, the sliding posture of the limiting component 212 and the moving conductive rod 211 is maintained, reducing the frictional resistance or jamming risk caused by off-center load and improving the smoothness of motion transmission.

[0221] The first elastic element 2131 and the second elastic element 2132 are springs, sheet springs, etc. The example provided in this application is a spring, but it is not limited thereto.

[0222] In other embodiments, please continue to refer to Figure 2 and Figure 14 The vacuum insulation assembly 2 further includes a fixing member 214, which abuts against the end face of the housing 23, and has a boss 2142 on the side facing the limiting assembly 212; a first elastic member 2131 abuts between the fixing member 214 and the limiting assembly 212, one end of which is sleeved on the outer periphery of the boss 2142 to define a radial position; and / or, the limiting assembly 212 further includes a limiting block 2121, which is sleeved on the movable conductive rod 211, the other end of the first elastic member 2131 is sleeved on the outer periphery of the limiting block 2121 and the limiting block 2121 defines a radial position, and one end of the second elastic member 2132 abuts against the limiting block 2121. In some embodiments, the limiting block 2121 abuts against the side of the gasket 2122 facing the housing 23.

[0223] The fixing member 214 abuts against the end face of the outer shell 23. A boss 2142 is provided on the side facing the limiting component 212 (that is, the side away from the outer shell 23). One end of the first elastic member 2131 is sleeved on the outer periphery of the boss 2142, thereby providing precise radial positioning for the first elastic member 2131, preventing the first elastic member 2131 from radially shifting during compression and reset, avoiding obstruction of the movement of the moving conductive rod 211 and affecting the operation of the second elastic member 2132. At the same time, the sleeve fit between the boss 2142 and the first elastic member 2131 facilitates the stable installation of the first elastic member 2131, so that the first elastic member 2131 can maintain a coaxial posture with the moving conductive rod 211 when subjected to force at both ends. This allows the first elastic member 2131 to apply force evenly to the limiting component 212 at all positions in the circumferential direction, and the moving conductive rod 211 can also be subjected to force evenly.

[0224] Correspondingly, the limiting block 2121 is sleeved on the moving conductive rod 211, the other end of the first elastic member 2131 is sleeved on the outer periphery of the limiting block 2121, and one end of the second elastic member 2132 abuts against the limiting block 2121. The limiting block 2121 serves as both the radial positioning structure of the first elastic member 2131 and the axial contact surface of the second elastic member 2132. The sleeved position of the limiting block 2121 on the moving conductive rod 211 enables it to achieve radial positioning, thereby providing radial constraint for the first elastic member 2131 sleeved on its outer periphery and providing a relatively flat contact surface for the second elastic member 2132. The boss 2142 on the fixing member 214 and the limiting block 2121 respectively provide radial limiting and axial constraint for the first elastic member 2131 and the second elastic member 2132, thereby achieving the installation and guiding effect of the first elastic member 2131 and the second elastic member 2132. The purpose of dividing the limiting component 212 into a limiting block 2121 and a gasket 2122 is that the limiting block 2121 can provide a stable limiting base for limiting the first elastic member 2131 and the second elastic member 2132, while the gasket 2122 has a small size along the axial direction of the moving conductive rod 211, which facilitates the offset relative to the axial direction of the moving conductive rod 211. This allows the gasket 2122 to maintain sufficient contact with the driving part under the action of the first elastic member 2131, achieving a contact without any suspended position. This ensures that the driving part is subjected to uniform force and reduces the problem of jamming or movement failure when the driving part moves. In some embodiments, this reduces the problem of jamming or movement failure when the moving magnetic component 12 is running.

[0225] In some embodiments, the first elastic element 2131 and the second elastic element 2132 are nested, but the two ends of the first elastic element 2131 are radially limited by the boss 2142 of the fixing element 214 and the limiting block 2121, respectively, and the second elastic element 2132 is radially limited by the moving conductive rod 211. Therefore, the first elastic element 2131 and the second elastic element 2132 can be installed independently, which has stronger stability and will not interfere with each other.

[0226] In some embodiments, along the movement direction of the moving conductive rod 211, one end of the outer shell 23 abuts against the first housing 31, and the other end of the outer shell 23 abuts against the fixing member 214. The fixing member 214 is inserted into the first housing 31 and fixed relative to the first housing 31 along the movement direction of the moving conductive rod 211. The outer shell 23 includes a ceramic insulating cover to provide a sealed and insulating environment for the moving contact assembly 21 and the stationary contact assembly 22. One end of the outer shell 23 directly abuts against the first housing 31, and the other end abuts against the fixing member 214. The fixing member 214 is fixed relative to the first housing 31, so that both ends of the outer shell 23 in the movement direction of the moving conductive rod 211 are constrained and limited by the first housing 31 and the fixing member 214, respectively, improving the accuracy and consistency of the axial positioning of the outer shell 23. When the switching device 100 is subjected to external vibration or mechanical impact, the axial displacement of the outer shell 23 is limited by the first housing 31 and the fixing member 214, reducing the risk of positional displacement of the outer shell 23 due to impact. Furthermore, the fixing member 214 also serves as the abutment and limiting base of the first elastic member 2131 and the axial limiting structure of the outer shell 23. The fixing member 214 is fixed relative to the first shell 31, ensuring that one end of the first elastic member 2131 has a stable support point, so that the first elastic member 2131 can provide reliable elastic force to the limiting component 212. The two ends of the outer shell 23 abut against the first shell 31 and the fixing member 214 respectively, so that the outer shell 23 is stably positioned in the axial direction, providing a stable guiding foundation for the precise movement of the moving conductive rod 211 within the outer shell 23.

[0227] In some embodiments, the end of the movable conductive rod 211 away from the housing 23 is provided with a limiting surface 2151 facing the housing 23; the limiting component 212 is adapted to abut against the limiting surface 2151 under the action of the elastic component 213 (first elastic element 2131 and / or second elastic element 2132), that is, the limiting surface 2151 is used to restrict the limiting component 212 from disengaging from the end of the movable conductive rod 211, and to enable the limiting component 212 to push the movable conductive rod 211 to move in a direction away from the stationary conductive rod 221 under the abutment of the first elastic element 2131.

[0228] The movable conductive rod 211 is provided with a limiting surface 2151 facing the outer shell 23. Therefore, when the limiting component 212 is subjected to the force of the elastic component 213 (the first elastic element 2131 and / or the second elastic element 2132), it can move in the direction away from the stationary contact component 22. Since the limiting surface 2151 abuts against the limiting component 212, the limiting component 212 can still be fitted onto the movable conductive rod 211 without detaching from it. Since the limiting component 212 is also used to cooperate with the first elastic element 2131 and the second elastic element 2132, it can ensure that the first elastic element 2131 and the second elastic element 2132 will not easily detach from the movable conductive rod 211, so as to ensure that the function of the vacuum insulation component 2 can be realized.

[0229] In some embodiments, the movable contact assembly 21 further includes a movable lead-out terminal 217; the end of the movable lead-out terminal 217 is sleeved on the outer periphery of the movable conductive rod 211 and adapted to abut against the limiting assembly 212 and the limiting surface 2151. In the example provided in this embodiment, the movable lead-out terminal 217 is made of a flexible copper busbar, which is adapted to be electrically connected to the movable conductive rod 211, and the flexible copper busbar can be bent to facilitate movement with the movable conductive rod 211. The end of the flexible copper busbar away from the movable conductive rod 211 is used to connect to an external circuit. Since the movable lead-out terminal 217 can abut against the limiting assembly 212 and the limiting surface 2151, at least in the disconnected state, the limiting assembly 212 can cooperate with the limiting surface 2151 to continuously press the movable lead-out terminal 217 under the action of the first elastic member 2131 and the second elastic member 2132, ensuring the stability of the connection between the movable lead-out terminal 217 and the movable conductive rod 211.

[0230] In some embodiments, please refer to Figure 2 and Figure 13 The moving contact assembly 21 also includes a threaded connector 215, which is fixedly connected to one end of the moving conductive rod 211 near the drive unit. The side of the threaded connector 215 facing the stationary contact assembly 22 can abut against the limiting assembly 212 to prevent the limiting assembly 212 from disengaging from the moving conductive rod 211. The threaded connector 215 is fixedly connected to the end of the movable conductive rod 211, and its side facing the stationary contact component 22 forms a limiting surface 2151. During the operation of the driving part and the first elastic member 2131, the limiting component 212 slides on the movable conductive rod 211. When the limiting component 212 slides to the limit position near the driving part, it will abut against the limiting surface 2151, thereby being restricted from continuing to move in that direction. This ensures that the limiting component 212 is always kept within the effective stroke range of the movable conductive rod 211, preventing the limiting component 212 from dislodging from the end of the movable conductive rod 211 due to the thrust of the first elastic member 2131 or external vibration, thus maintaining the abutment relationship between the driving part and the limiting component 212 and the effectiveness of the elastic member 213.

[0231] In addition, the threaded connector 215 can also be used to limit the moving lead-out terminal 217 and prevent the moving lead-out terminal 217 from coming out.

[0232] Furthermore, when the first elastic element 2131 releases energy, it can push the limiting component 212 to abut against the limiting surface 2151, and by pushing the limiting surface 2151, it can further push the moving conductive rod 211 to disconnect away from the stationary contact component 22. That is, the first elastic element 2131 can also be used to drive the vacuum insulation component 2 to disconnect automatically without the aid of the driving component 1. In this way, the driving part of the driving component 1 does not need to abut against the surface of the moving conductive rod 211 facing the stationary contact component 22, but only needs to abut against the side of the limiting component 212 away from the stationary contact component 22. The structure of the driving part can be simpler, and the intersection of the driving part with the moving contact component 21 in the direction of action is less, thus making it easier to realize the separate setting and independent installation of the moving contact component 21 and the driving part.

[0233] Furthermore, the fixed connection of the threaded connector 215 at the end of the moving conductive rod 211 makes the installation and disassembly of the limiting component 212 more convenient. During assembly, the second elastic element 2132, the first elastic element 2131, and the limiting component 212 can be sequentially fitted onto the moving conductive rod 211, and finally axially fixed by the threaded connector 215. The assembly method is simple and suitable for automated or semi-automated installation, improving the operability and efficiency of the assembly. At the same time, the threaded connector 215 is detachable, providing convenience for subsequent maintenance or replacement of corresponding components.

[0234] In some embodiments, the threaded connector 215 includes a screw, one end of the movable conductive rod 211 is provided with a threaded connection hole, the screw and the threaded connector 215 are screwed together, and the end of the screw near the movable conductive rod 211 forms a limiting surface 2151, which is convenient for installation.

[0235] In some embodiments, please refer to Figure 2 and Figure 15 The driving part has at least two spaced contact positions 151a on the side that abuts against each limiting component 212, and each contact position 151a is evenly distributed on the outer periphery of the moving conductive rod 211. In these embodiments, during the process of installing the driving component 1 and the vacuum insulation component 2 into the first housing 31, there may be slight parallelism deviations or relative tilts between the driving part and the limiting component 212. When the driving part has multiple spaced contact positions 151a, even if there are certain installation deviations, each contact position 151a can still form multiple contacts with the limiting component 212, so that the driving force is transmitted through multiple contact positions 151a, avoiding off-center loading or partial separation caused by single-point contact, thereby improving the fault tolerance of the assembly process and the driving process, and reducing the impact of manufacturing and assembly tolerances on the driving effect.

[0236] Furthermore, multiple contact points 151a are provided between the driving part and the limiting component 212. The contact area of ​​each contact point 151a is smaller, and the surface flatness of the contact point 151a is easier to control. This allows the limiting component 212 to abut against each contact point 151a under the action of the elastic component 213, resulting in more uniform force on each position of the limiting component 212. This provides a uniform driving force to the moving conductive rod 211, making the centering movement of the moving conductive rod 211 smoother. It also makes the contact point 151a between the moving conductive rod 211 and the stationary contact component 22 more stable, avoiding an increase in contact resistance. In contrast, the multiple contact points 151a facilitate the abutment between the limiting component 212 and the driving part without any suspended positions, thereby ensuring uniform force on the driving part and reducing the problem of jamming or movement failure when the driving part moves. In some embodiments, this reduces the problem of jamming or movement failure when the moving magnetic component 12 is running.

[0237] Furthermore, when the drive unit pushes the limiting component 212 to move, each contact position 151a simultaneously applies a pushing force to the limiting component 212, forming a multi-point support pushing method, which makes the driving force more smoothly transmitted to the moving conductive rod 211, thereby improving the alignment accuracy between the moving contact component 21 and the stationary contact component 22; and the force on the moving conductive rod 211 can also be reflected back to the drive unit through the contact positions 151a, reducing the tendency of the drive unit to wobble or tilt during the operation.

[0238] Furthermore, in some embodiments, the driving unit provides two spaced contact positions 151a for each limiting component 212; the two contact positions 151a are respectively located on both sides of the moving conductive rod 211; or, along a direction perpendicular to the movement direction of the moving conductive rod 211, the vacuum insulation component 2 is limited by the first housing 31; the two contact positions 151a are symmetrically distributed on both sides of the moving conductive rod 211 along a direction perpendicular to the movement direction of the moving conductive rod 211; or, the first housing 31 has an opening, and the vacuum insulation component 2 is installed in the first housing 31 through the opening along a direction perpendicular to the movement direction of the moving conductive rod 211; along a direction perpendicular to the movement direction of the moving conductive rod 211 and perpendicular to the installation direction of the vacuum insulation component 2, the vacuum insulation component 2 is limited by the first housing 31; the two contact positions 151a are symmetrically distributed on both sides of the moving conductive rod 211 along a direction perpendicular to the movement direction of the moving conductive rod 211 and perpendicular to the installation direction of the vacuum insulation component 2.

[0239] It should be noted that the two contact positions 151a are symmetrically distributed on both sides of the moving conductive rod 211. Correspondingly, the two contact positions 151a can abut against the limiting component 212 under the action of the elastic component 213. The symmetrical distribution allows the limiting component 212 to be symmetrically stressed at each position, thereby making the force more uniform and providing a uniform and stable driving force to the moving conductive rod 211. This makes the centering movement of the moving conductive rod 211 smoother and also makes the contact position 151a between the moving conductive rod 211 and the stationary contact component 22 more stable, avoiding an increase in contact resistance. In contrast, the two symmetrically arranged contact positions 151a This design facilitates symmetrical contact between the limiting component 212 and the driving part, ensuring uniform force distribution on the driving part and reducing jamming or movement failure during driving part movement. In some embodiments, the driving part is connected to the moving magnetic component 12 or is a component of the moving magnetic component 12. The driving component 1 also includes a coil component 11, with the moving magnetic component 12 partially movably disposed within the coil component 11. This reduces the tendency of the moving magnetic component 12 to wobble or tilt relative to the inner wall of the coil component 11, further reducing jamming or movement failure during movement of the moving magnetic component 12 relative to the coil component 11. Furthermore, the advantage of using two contact points 151a is that even if there are processing errors, assembly deviations, or thermal deformation between the limiting component 212 and the driving part, it is less likely that one or more contact points 151a will be suspended, which might occur with "multiple points supporting a plane." This further ensures reliable and balanced contact between the limiting component 212 and the driving part under adaptive adjustment.

[0240] In some embodiments, two contact positions 151a are distributed along a direction perpendicular to the movement direction of the moving conductive rod 211, and both contact positions 151a extend along a direction perpendicular to their distribution direction and perpendicular to the movement direction of the moving conductive rod 211. It is understood that the two contact positions 151a are distributed along a direction perpendicular to the movement direction of the moving conductive rod 211, and each is an extension, such that each contact position 151a extends onto the surface of the limiting component 212. This extension significantly increases the contact area between the driving part and the limiting component 212, facilitating the uniform transmission of force between the driving part and the limiting component 212. This better achieves contact between the limiting component 212 and the driving part without any gaps, thereby ensuring that the driving part is subjected to uniform force and reducing problems such as jamming or movement failure during the movement of the driving part.

[0241] Furthermore, the extended contact positions 151a form contact areas distributed along a specific direction on the limiting component 212. When the driving part abuts against the limiting component 212, the limiting component 212 can more easily adaptively adjust to contact all contact positions 151a under the action of the elastic component 213, thereby reducing the problem of contact separation or unstable contact state. At the same time, the extension direction of the two contact positions 151a is perpendicular to the distribution direction of both, so that the contact area has a certain coverage range in two orthogonal directions, further improving the fault tolerance rate of the contact between the driving part and the limiting component 212.

[0242] Furthermore, in some embodiments, the contact between the contact point 151a and the limiting component 212 is a line contact or a surface contact. When the driving part pushes the limiting component 212, the line contact or surface contact can maintain the continuity of the contact state. Even if the relative position changes due to assembly tolerances or slight wobble during the movement, the line contact and surface contact can still maintain effective force transmission, improving the reliability of the abutment between the driving part and the limiting component 212 and reducing the possibility of slippage or disengagement of the contact point 151a. In addition, the line contact distributes the driving force along the contact line, while the surface contact disperses the driving force to the entire contact area. Compared with point contact, both significantly reduce contact stress. Moreover, the line contact or surface contact allows the contact surface between the limiting component 212 and the driving part to bear more uniform pressure, reducing the risk of local wear.

[0243] In some embodiments, the driving unit has two abutting protrusions 151 corresponding to each limiting component 212. The two abutting protrusions 151 are distributed in a direction perpendicular to the movement direction of the moving conductive rod 211. The part of the protrusions 151 that abuts against the limiting component 212 forms a contact position 151a. An avoidance groove is formed between the two abutting protrusions 151. The avoidance groove is used to avoid the end of the moving conductive rod 211, so that the driving unit will not come into contact with the end of the moving conductive rod 211 during the process of pushing the limiting component 212.

[0244] The two pushing protrusions 151 respectively form two contact positions 151a, which are distributed on both sides of the moving conductive rod 211 in a direction perpendicular to the direction of movement of the moving conductive rod 211. When the driving part pushes the limiting component 212, the two protrusions simultaneously abut against the limiting component 212, and transmit the driving force symmetrically and evenly to the two corresponding areas of the limiting component 212, so that the driving force is evenly distributed on the limiting component 212, so that the moving conductive rod 211 can be evenly stressed, ensuring that the moving conductive rod 211 can move smoothly relative to the stationary contact component 22. On the other hand, it also realizes the abutment between the limiting component 212 and the driving part without any suspended position, thereby ensuring that the driving part can be evenly stressed and reducing the problem of jamming or movement failure when the driving part moves.

[0245] Please refer to Figure 2 and Figure 15 In some embodiments, both push protrusions 151 extend in a direction perpendicular to their respective distribution directions; the projection of the push protrusions 151 on a projection plane perpendicular to their extension direction is triangular or trapezoidal, and the tip or upper bottom of the push protrusions 151 constitutes a contact position 151a. The pushing protrusion 151 is triangular or trapezoidal in shape on the projection plane perpendicular to its extension direction, which means that the pushing protrusion 151 has a gradually changing cross-sectional size from the root to the top. The triangular or trapezoidal cross-section of the pushing protrusion 151 has a larger cross-sectional width at the root, which can effectively resist the bending moment and shear stress generated during the transmission of driving force. When the driving part pushes the limiting component 212, the pushing protrusion 151 bears a large axial load. The gradually widening structure at the root disperses the stress in the root region, reduces local stress concentration, and improves the fatigue resistance and deformation resistance of the pushing protrusion 151 in long-term reciprocating motion. Furthermore, the tip or upper base of the triangular or trapezoidal cross-section forms the contact position 151a, so that the contact area is concentrated at the top of the pushing protrusion 151, and the driving force is transmitted to the limiting component 212 through a smaller contact area. While ensuring contact stability, the main body of the protrusion bears the load dispersion function.

[0246] Please refer to Figure 2 and Figure 15In some embodiments, the drive assembly 1 includes a transmission member 15 and a drive mechanism, at least a portion of the transmission member 15 constitutes a drive unit; the transmission member 15 includes a connecting rod 152 and a push plate 153, the connecting rod 152 is connected to the drive mechanism; the push plate 153 is connected to the connecting rod 152, and a pushing protrusion 151 is provided on the side of the push plate 153 away from the connecting rod 152. The transmission component 15 includes a connecting rod 152 and a push plate 153. The connecting rod 152 is mainly responsible for connecting with the drive mechanism and transmitting the driving force to the push plate 153. Its cross-section and length can be optimized according to the connection method and spatial layout with the drive mechanism. The push plate 153 serves as the interface that directly interacts with the limiting component 212. It is used to set the pushing protrusions 151 and bear the reaction force. Therefore, each part of the transmission component 15 can be specially designed for the different load characteristics it bears. For example, the push plate 153 can have a larger lateral dimension to accommodate multiple distributed pushing protrusions 151, while the connecting rod 152 can maintain a smaller cross-section to save space, reduce weight and material consumption, and reduce the deflection torque generated on the drive unit, so that the drive unit can move smoothly. Furthermore, the push plate 153 is connected to the connecting rod 152, and the abutting protrusion 151 is located on the side of the push plate 153 away from the connecting rod 152. This allows the driving force to be transmitted from the connecting rod 152 to the push plate 153, and then distributed to the two abutting protrusions 151 through the push plate 153. The rigidity of the push plate 153 itself helps to balance the load borne by the two abutting protrusions 151, reducing local stress concentration at the connection between the connecting rod 152 and the push plate 153. At the same time, the push plate 153 provides a stable mounting base for the abutting protrusion 151, enabling the abutting protrusion 151 to maintain precise alignment with the limiting component 212 during long-term reciprocating motion.

[0247] Furthermore, in some embodiments, the push plate 153 extends in a direction perpendicular to the direction of movement of the movable conductive rod 211; the push plate 153 is provided with multiple sets of pushing protrusions 151 at intervals along its extension direction; each set of pushing protrusions 151 is used to correspond to one movable contact component 21, and each set of pushing protrusions 151 includes two pushing protrusions 151.

[0248] It is understood that the push plate 153 extends in a direction perpendicular to the direction of movement of the moving conductive rod 211, and multiple sets of pushing protrusions 151 are provided at intervals in its extension direction. Each set of pushing protrusions 151 corresponds to an independent moving contact component 21. When the drive mechanism drives the push plate 153 to move through the connecting rod 152, the push plate 153 drives all the pushing protrusions 151 on it to move synchronously, thereby realizing the simultaneous closing or opening of multiple moving contact components 21 and their corresponding stationary contact components 22. This allows a single drive component 1 to coordinately control the movement of multiple moving contact components 21, eliminating the need to set an independent drive mechanism for each moving contact component 21 and simplifying the overall structure of the switching device 100.

[0249] It is understood that in some embodiments, there are multiple vacuum insulation components 2 and multiple moving contact components 21. When the pusher pushes multiple moving contact components 21 at the same time, the drive unit and multiple moving contact components 21 are set separately. That is, the pusher and multiple limiting components 212 are set separately. This can effectively reduce the problems of installation failure or inaccurate alignment of the moving conductive rod 211, easy jamming or failure of the moving magnetic component 12 caused by the installation error of multiple vacuum insulation components 2 or drive components 1.

[0250] In some embodiments, multiple sets of pushing protrusions 151 are disposed on the same push plate 153, and the contact positions 151a of each pushing protrusion 151 are located in the same plane. When the push plate 153 is driven, each set of pushing protrusions 151 pushes the corresponding limiting component 212 in the same direction and stroke, so that multiple moving conductive rods 211 obtain consistent movement displacement. Since the rigidity of the push plate 153 itself ensures the relative position stability between each set of pushing protrusions 151, the closing and opening of each moving contact component 21 and its corresponding stationary contact component 22 can be synchronized, reducing the risk of asynchronous movement or uneven force due to independent driving. In addition, the reaction force from the elastic component 213 on the transmission component 15 is more uniform, resulting in a smaller deflection torque. Therefore, the deflection torque received by the connected moving magnetic component 12 is also smaller, ensuring that the moving magnetic component 12 can operate smoothly and reducing jamming and movement failure problems.

[0251] Continue to refer to Figure 15 and Figure 16In some embodiments, the transmission member 15 further includes: a support plate 154 connected between the connecting rod 152 and the push plate 153; and a plurality of support ribs 155 connected between the support plate 154 and the push plate 153. The support plate 154 disperses the concentrated driving force transmitted by the connecting rod 152 to the root region of the push plate 153. Compared with the cantilever structure where the connecting rod 152 is directly connected to the push plate 153, the introduction of the support plate 154 increases the force-bearing area at the connection between the support plate 154 and the push plate 153, reducing local stress concentration. The support ribs 155 further form a triangular or mesh support structure between the support plate 154 and the push plate 153. On the one hand, the support ribs 155 can enhance the strength of the support plate 154. On the other hand, the support ribs 155 can enable the push plate 153 to transfer part of the load to the support plate 154 through the ribs 31211 when it is subjected to the reaction force transmitted by multiple sets of pushing protrusions 151, thus improving the stress state at the root of the push plate 153. Furthermore, the push plate 153 extends along the direction of movement perpendicular to the moving conductive rod 211, and is provided with multiple sets of pushing protrusions 151 at intervals. During operation, it needs to withstand the reaction force generated by the elastic components 213 of multiple moving contact components 21. The combined structure of the support plate 154 and the support rib 155 significantly improves the bending strength of the push plate 153 in this extension direction, reduces the bending deformation that the push plate 153 may produce when under force, and thus ensures that the multiple sets of pushing protrusions 151 maintain a coplanar positional relationship during long-term operation, so that each moving contact component 21 obtains a consistent stroke and contact pressure.

[0252] In some embodiments, the connecting rod 152 extends along the direction of motion of the moving conductive rod 211; multiple sets of pushing protrusions 151 are symmetrically distributed about the central axis of the connecting rod 152. The connecting rod 152 extends along the direction of motion of the moving conductive rod 211, with its axial direction aligned with the driving motion direction. The multiple sets of pushing protrusions 151 are symmetrically distributed about the central axis, meaning that each pushing protrusion 151 on the push plate 153 is symmetrically arranged on both sides perpendicular to the direction of motion. When the driving mechanism applies a driving force through the connecting rod 152, the reaction force fed back to the push plate 153 by each moving contact component 21 through the pushing protrusions 151 is symmetrically distributed about the axis of the connecting rod 152. The torques on both sides cancel each other out, so that the push plate 153 only bears axial load and does not generate deflection torque. This symmetrical layout effectively avoids the skewing or wobble of the transmission component 15 caused by uneven force distribution. Therefore, the reaction force from the elastic component 213 on the transmission component 15 is more uniform, resulting in a smaller deflection torque. Consequently, the deflection torque on the connected moving magnetic component 12 is also smaller, ensuring that the moving magnetic component 12 can operate smoothly and reducing jamming and motion failure problems.

[0253] In some embodiments, when the coil assembly 11 is forward energized, the moving magnetic component 12 drives the moving contact component 21 to move toward the stationary contact component 22, and the elastic component 213 stores energy. When the coil assembly 11 is de-energized or reverse energized, the elastic component 213 releases energy and moves the moving contact component 21 away from the stationary contact component 22 to the disconnected position. In the disconnected position, the limiting component 212 abuts against the elastic component 213 and the transmission component 15, and the moving magnetic component 12 abuts against the first magnetic yoke 131 and / or the second magnetic yoke 132 and stops.

[0254] When the coil assembly 11 is forward energized, the moving magnetic component 12 drives the synchronous movement of the transmission component 15 and the limiting component 212, causing the elastic component 213 to store elastic potential energy. At this time, the elastic component 213 is in a compressed state. When it is necessary to disconnect the contact, the moving magnetic component 12 loses its magnetism or acquires the opposite magnetism by controlling the coil assembly 11 to de-energize or reverse-energize it, moving away from the vacuum insulation component 2. At this time, the elastic component 213 releases the stored elastic potential energy, pushing the limiting component and the transmission component 15 it abuts against away from the stationary contact component 22. Correspondingly, the moving magnetic component 12 connected to the transmission component 15 is also moved away from the stationary contact component 22, so that the contact disconnection action does not rely solely on the reverse excitation of the coil component 11 or the weakening of the permanent magnet force. In the event of the coil component 11 losing power, the stationary contact component 22 and the moving contact component 21 can be disconnected by relying on the mechanical force of the elastic component 213. This improves the disconnection reliability of the switching device 100 in the event of power failure and helps to reduce the driving force of the coil component 11 to drive the moving contact component 21 to disconnect, saving energy consumption and forming a redundant design of electromagnetic drive and mechanical reset.

[0255] Furthermore, by using the elastic component 213 and utilizing the moving magnetic component 12 to abut against the first magnetic yoke 131 and / or the second magnetic yoke 132 to stop, it is beneficial to ensure that the contact gap between the moving conductive rod 211 and the stationary contact component 22 reaches a preset value when the switch is turned off. In addition, when the switch is turned off, the elastic component 213 always remains in a compressed state to continuously push against the limiting component 212, the transmission component 15 and the moving magnetic component 12, thereby ensuring the stability of the contact gap between the moving conductive rod 211 and the stationary contact component 22, thus ensuring the reliability of the switch device 100 in turning off and the good withstand voltage characteristics between the moving conductive rod 211 and the stationary contact component 22, and ensuring that the moving conductive rod 211 and the stationary contact component 22 can be used in different voltage environments.

[0256] In some embodiments, the transmission component 15 is made of plastic. It is understood that the transmission component 15 constitutes the driving part in the driving assembly 1 and directly abuts against the limiting component 212 in the moving contact assembly 21. The moving conductive rod 211 is used to carry the high voltage circuit, while the driving mechanism is usually connected to the low voltage control side. By using plastic material to manufacture the transmission component 15, the driving part and the end of the moving conductive rod 211 are spatially isolated through the clearance groove, and the insulation properties of the material itself are further increased. This effectively blocks the electrical path that may be formed from the high voltage side to the low voltage side, improves the high voltage insulation performance of the switching device 100, and reduces the risk of breakdown or leakage. In some scenarios, it can meet the insulation safety requirements of high voltage application scenarios such as new energy and electric vehicles.

[0257] Furthermore, plastic materials have a lower density than metal materials, resulting in less mass for the same volume. This reduces the deflection torque generated by the transmission component 15, thereby lowering the probability of the moving magnetic component 12 deflecting and ensuring smooth movement of the moving magnetic component 12. Additionally, some plastic materials possess good elasticity. As the reciprocating part of the drive assembly 1, the reduced mass of the transmission component 15 helps reduce motion inertia. During the closing or opening of the switching device 100, the smaller moment of inertia allows the drive unit to respond more quickly to the drive mechanism's action commands, while generating less impact kinetic energy at the end of the stroke, which helps buffer mechanical shocks and improves the sensitivity and reliability of the action. Moreover, plastic parts are suitable for integrated manufacturing through injection molding, reducing the number of parts and assembly steps while ensuring precise relative positions between structural features.

[0258] In some embodiments, the drive assembly 1 includes a drive mechanism; the drive mechanism includes a coil assembly 11 and a moving magnetic component 12. The coil assembly 11 is positioned and installed on the first housing 31, and it is understood that the coil assembly 11 is fixed relative to the first housing 31 after it is installed in place. A portion of the moving magnetic component 12 is slidably disposed on the inner periphery of the coil assembly 11, and the drive part is connected to the moving magnetic component 12 or is composed of a portion of the moving magnetic component 12. When the coil assembly 11 is energized, the two ends of the moving magnetic component 12 will have opposite magnetism, thereby pushing the moving magnetic component 12 to slide relative to the coil assembly 11 to a predetermined side, so that the moving magnetic component 12 can slide relative to the coil assembly 11 and generate a driving force. Furthermore, the drive part can be a part of the moving magnetic component 12, or the drive part can be an independent structure connected to the moving magnetic component 12 to be driven by the moving magnetic component and cooperate with the vacuum insulation component 2. This application is not limited herein.

[0259] In this embodiment, the switching device 100 includes a driving assembly 1 and a vacuum insulation assembly 2. The driving assembly 1 includes a coil assembly 11, a moving magnetic component 12, a yoke assembly 13, and a permanent magnet 14. The vacuum insulation assembly 2 includes a stationary contact assembly 22 and a moving contact assembly 21 that can be opened or closed in a vacuum environment. The yoke assembly 13 includes a first yoke 131 and a second yoke 132 with opposite polarities. The two ends of the moving magnetic component 12 are adapted to engage with the first yoke 131 and / or the second yoke 132 respectively when the moving contact assembly 21 and the stationary contact assembly 22 are in the closed position; and / or, the two ends of the moving magnetic component 12 are adapted to engage with the first yoke 131 and the second yoke 132 respectively when the moving contact assembly 21 and the stationary contact assembly 22 are in the open position.

[0260] In some embodiments, a permanent magnet 14 is connected between the first yoke 131 and the second yoke 132, such that the first yoke 131 and the second yoke 132 have opposite magnetic properties. When the coil assembly 11 is energized, the two ends of the moving magnetic component 12 will have opposite magnetic properties. Since the first yoke 131 and the second yoke 132 have opposite magnetic properties, the two ends of the moving magnetic component 12 are subjected to magnetic driving forces from the first yoke 131 and the second yoke 132 respectively, and these two magnetic driving forces are coordinated in direction, thereby jointly pushing the moving magnetic component 12 relative to the coil assembly 1 with a larger initial magnetic driving force. Sliding to a preset side optimizes the driving effect of the electromagnetic drive system. Therefore, the solution of this application can maintain sufficient driving force while reducing the size of the coil assembly 11 to compress the overall volume of the switching device 100. This ensures that even with a large contact gap between the moving contact assembly 21 and the stationary contact assembly 22, the magnetic driving force generated by the excitation of the coil assembly 11 can still ensure that the moving magnetic component 12 can operate quickly, reliably, and accurately, thereby meeting the requirements for circuit switching. At the same time, configuring the permanent magnet 14 can also meet the requirement of reducing power consumption while reducing the size of the coil assembly 11. Meanwhile, when the moving contact assembly 21 and the stationary contact assembly 22 are disconnected, the magnetic holding effect of the permanent magnet 14 enables the switching device 100 to stably maintain the normally open state, ensuring good withstand voltage performance between the moving contact assembly 21 and the stationary contact assembly 22.

[0261] In some embodiments, during the closing process, the magnetic field generated by the permanent magnet 14 and the magnetic field generated by the coil energized are in the same direction and superimposed on each other, which further increases the electromagnetic attraction, accelerates the closing, and reduces the power requirement of the coil assembly 11. This helps to reduce energy consumption, reduce the size of the coil assembly 11 to compress the overall volume of the switching device 100, and improve the reliability during closing.

[0262] Specifically, when the moving contact assembly 21 and the stationary contact assembly 22 are in the closed or open position, the moving magnetic conductor assembly 12 can generate a magnetic attraction force with the first magnetic yoke 131 and the second magnetic yoke 132 based on the magnetic field provided by the permanent magnet 14 and the magnetic field generated by the excitation of the coil assembly 11, and maintain a stable position, thereby ensuring the stability of the moving contact assembly 21 and the stationary contact assembly 22 in the closed or open position. In particular, when the vacuum insulation assembly 2 is required to be normally closed or normally open, the stability of the vacuum insulation assembly 2 in the normally closed or normally open state can be ensured.

[0263] The applicant discovered that, in order to improve the insulation performance of the switching device 100 in the off state, in some embodiments, taking the switching device 100 as an example, the switching device 100 includes a vacuum insulation component 2. The switching device 100 improves its insulation performance by configuring a longer vacuum insulation component 2 and a larger contact gap between the stationary contact component 22 and the moving contact component 21. However, such a configuration would increase the size of the switching device 100, making it difficult to achieve a miniaturized design of the switching device 100.

[0264] In some embodiments, please refer to Figures 1 to 4 , Figures 17 to 20 This application also proposes a switching device 100, wherein the switching device 100 includes a housing 3 and a vacuum insulation component 2. The housing 3 includes an isolation structure 33, which divides the housing into a chamber. The isolation structure 33 is provided with a through hole 331. The vacuum insulation component 2 includes a shell 23 and a stationary contact component 22 and a moving contact component 21, both of which are installed on the shell 23. The shell 23 passes through the through hole 331. The tube wall of the shell 23 and the hole wall of the through hole 331 are sealed together. The lead-out ends of the stationary contact component 22 and the moving contact component 21 are exposed through the two ends of the shell 23, and the lead-out ends of the stationary contact component 22 and the moving contact component 21 are located on both sides of the isolation structure 33. One of the lead-out ends of the stationary contact component 22 and the moving contact component 21 is located in the chamber, and the other is located outside the chamber.

[0265] In some embodiments, the static contact assembly 22 includes a static conductive rod 221, wherein a portion of the static conductive rod 221 is located within the housing 23, and another portion of the static conductive rod 221 protrudes from the end of the housing 23 and forms an extension portion. In the following embodiments, the extension portion of the static conductive rod 221 constitutes the extension end of the static contact assembly 22. In some embodiments, the isolation structure 33 is also referred to as the support structure. Therefore, the specific construction and function of the isolation structure 33 in the embodiments of this application are applicable to the support structure described below.

[0266] In this structure, the isolation structure 33 separates the housing 3 into a chamber. The leads of the stationary contact assembly 22 and the leads of the moving contact assembly 21 are located on opposite sides of the isolation structure 33, thus separating them. Since the outer shell 23 of the vacuum insulation assembly 2 penetrates the through hole 331 of the isolation structure 33, and the wall of the outer shell 23 forms a sealed fit with the wall of the through hole 331, ensuring the sealed fit at the through hole 331 achieves insulation on both sides of the isolation structure 33. This blocks the minimum creepage path that may form along the inner wall of the through hole 331 of the isolation structure 33, thereby enabling insulation when no creepage is required. By extending the axial length of the housing 23, the insulation and withstand voltage performance between the leads of the stationary contact component 22 and the leads of the moving contact component 21 are improved. This allows the switching device 100 to effectively separate the leads of the stationary contact component 22 and the leads of the moving contact component 21 within a limited space, thereby improving the withstand voltage capability between them. This ensures that the leads of the stationary contact component 22 and the leads of the moving contact component 21 can adapt to different voltage environments, which is conducive to the miniaturization design of the switching device 100. It is suitable for applications such as electric vehicles and portable devices that have high requirements for both space and withstand voltage.

[0267] Furthermore, the small gap between the tube wall of the outer casing 23 and the hole wall of the through hole 331 effectively reduces the use of sealing material. The sealing position is definite and concentrated, thus reducing the leakage of sealing material when using adhesives or other sealing materials and avoiding impact on other components. In this embodiment, the isolation structure 33, the sealing fit, and the spatial separation formed by the chamber effectively improve the pressure resistance between the lead-out end of the stationary contact component 22 and the lead-out end of the moving contact component 21. One of the lead-out ends of the stationary contact component 22 and the moving contact component 21 is located inside the chamber, and the other is located outside the chamber. The lead-out end located inside the chamber can use the insulating gas that may be filled in the chamber or the vacuum environment maintained as the insulating medium, while the lead-out end located outside the chamber uses the surrounding air or external insulating medium for insulation, thereby enhancing the design flexibility of the overall insulation system.

[0268] In some embodiments, the chamber is sealed to cut off the communication between the chamber and the outside as much as possible, thereby further increasing the minimum creepage distance between the moving contact assembly 21 and the stationary contact assembly 22, thereby improving the insulation performance and withstand voltage capability of the stationary contact assembly 22 and the moving contact assembly 21 when disconnected.

[0269] Furthermore, the sealed chamber design prevents external air, moisture, or dust from seeping into the chamber, avoiding internal contamination and providing a stable and sustainable insulation environment for the leads of the stationary contact assembly 22 or the leads of the moving contact assembly 21. In addition, the isolation structure 33 has a through-hole 331 through which the housing 23 passes and seals against the bore wall, thereby blocking creepage paths along the inner wall of the through-hole 331. Based on this, the sealed chamber design further prevents external contaminants from adhering to or accumulating within the chamber through the through-hole 331 of the isolation structure 33, thus significantly improving the insulation reliability of the switching device 100 under various harsh environments.

[0270] The through-hole 331 has a sealing groove 332 on its wall ring. The sealing groove 332 can be filled with adhesive or a sealing ring to form a sealing fit with the outer wall of the housing 23. The sealing groove 332 is arranged around the wall of the through-hole 331, providing corresponding space for the adhesive or sealing ring. During assembly, the adhesive can be quantitatively injected into the sealing groove 332, or the sealing ring can be installed in the sealing groove 332. When the housing 23 penetrates the through-hole 331, the adhesive is squeezed and filled between the pipe wall and the hole wall of the housing 23, or the sealing ring is deformed by pressure to form a tight fit. The sealing groove 332 can ensure the uniform distribution of the sealing material in the groove, avoiding discontinuous sealing or sealing material extrusion failure caused by assembly misalignment, and significantly improving the consistency and reliability of the seal.

[0271] Furthermore, the sealing groove 332 can be filled with adhesive or fitted with a sealing ring according to actual needs. The adhesive, after curing, forms a solid sealing layer that can accommodate minute dimensional differences between the outer casing 23 wall and the through-hole 331 wall, making it suitable for scenarios requiring high long-term sealing stability. The sealing ring, on the other hand, facilitates disassembly and maintenance, making it suitable for scenarios requiring repeated assembly or replacement of the vacuum insulation component 2. The design of the sealing groove 332 enables reliable radial sealing for both sealing methods, enhancing design flexibility and process adaptability. In some embodiments, when adhesive is used to fill the sealing groove 332, the amount of adhesive used is less due to the smaller gap between the through-hole 331 of the isolation structure 33 and the outer casing 23 wall. This reduces damage to the outer casing 23 caused by adhesive curing and the difference in coefficients of thermal expansion and contraction between the adhesive and the outer casing 23, further improving the insulation effect.

[0272] In some embodiments, the sealing groove 332 is adapted to receive adhesive injected from one end of the through hole 331. The sealing groove 332 is disposed on the wall of the through hole 331, and the adhesive is injected from one end of the through hole 331. During assembly, the housing 23 of the vacuum insulation component 2 can be inserted into the through hole 331 first, so that the tube wall of the housing 23 and the hole wall of the through hole 331 fit together. Then, adhesive is injected from one end of the through hole 331. Under the siphon effect, the adhesive flows along the gap between the hole wall of the through hole 331 and the tube wall of the housing 23 and fills the sealing groove 332. In other embodiments, adhesive is pre-applied to the hole wall of the through hole 331 and the sealing groove 332 before the housing 23 is installed. In some embodiments of this application, the method of injecting adhesive after the housing 23 is installed can reduce the risk of the adhesive being scratched or unevenly distributed during the installation of the housing 23. At the same time, the axial position of the housing 23 can be finely adjusted before the adhesive cures, which improves the convenience of assembly and positioning accuracy.

[0273] Furthermore, the sealing groove 332, as a structure for receiving adhesive, provides space for the flow of adhesive. When adhesive is injected from one end of the through hole 331, the annular structure of the sealing groove 332 can effectively intercept the incoming adhesive, allowing excess adhesive to flow along the extension direction of the sealing groove 332 and accumulate within it. This reduces excessive axial flow or overflow of adhesive along the through hole 331. After the adhesive accumulates and solidifies within the sealing groove 332, it forms a complete sealing ring surrounding the wall of the outer casing 23. The tight bonding and sealing effect between the through hole 331 and the outer casing 23 is achieved, and the annular sealing groove 332 ensures the continuity and uniformity of the sealing effect, reducing local weak seals caused by uneven distribution of adhesive. Furthermore, since the gap between the through hole 331 and the outer casing 23 is small, less adhesive is needed, thereby reducing the amount of adhesive used. The sealing groove 332 can also be used to fill excess adhesive, reducing the potential pollution or interference caused by excess adhesive overflowing to other areas.

[0274] Please refer to Figure 20The housing 3 also includes a receiving groove 315, which and the chamber are located on opposite sides of the isolation structure 33. The receiving groove 315 communicates with the through hole 331. The receiving groove 315 can be filled with adhesive, and when filling with adhesive, the adhesive is suitable for flowing into the gap between the wall of the through hole 331 and the outer shell 23. The receiving groove 315 is located on one side of the isolation structure 33, communicating with the through hole 331, and on the opposite side of the chamber. During assembly, adhesive can be pre-injected or coated into the receiving groove 315. Subsequently, gravity, capillary action, or pressure causes the adhesive to overflow from the receiving groove 315 and fill the gap between the wall of the through hole 331 and the wall of the outer shell 23. The receiving groove 315 provides a large adhesive holding space, simplifies the adhesive injection operation, facilitates automated or semi-automated production, and the adhesive will naturally be subjected to force and... The adhesive flows along the gap between the wall of the through hole 331 and the wall of the outer casing 23, achieving insulation and isolation while improving assembly efficiency and consistency. Specifically, the receiving groove 315 is connected to the through hole 331, allowing the adhesive to continuously flow from the receiving groove 315 into the gap of the through hole 331 during filling until the gap is completely filled. Moreover, since the receiving groove 315 can store sufficient adhesive, it can continuously fill the gaps that may be caused by air bubbles escaping or uneven flow before curing, further improving the sealing and insulation effect. After the adhesive cures, an integrated sealing structure is formed in the gap between the receiving groove 315, the wall of the through hole 331, and the wall of the outer casing 23, as well as in the sealing groove 332, thereby achieving better barrier effect on both sides of the isolation structure 33, and further enhancing the insulation performance between the lead-out end of the stationary contact component 22 and the lead-out end of the moving contact component 21.

[0275] In some embodiments, the receiving groove 315 is designed to have a small internal space, so that a small amount of glue is needed to fill the receiving groove 315, thereby reducing the consumption of glue.

[0276] In some embodiments, the lead-out end of the stationary contact component 22 is located in the receiving groove 315 and is at least partially adapted to be covered in adhesive. The lead-out end of the stationary contact component 22 is at least partially covered in adhesive within the receiving groove 315, such that the exposed conductive portion of the lead-out end of the stationary contact component 22 is completely covered or partially wrapped by the adhesive. After the adhesive cures, it forms a solid insulating layer, isolating the lead-out end of the stationary contact component 22 from the external environment and other parts such as the housing 3. Since the receiving groove 315 and the chamber are located on opposite sides of the isolation structure 33, and the adhesive has filled the gap between the wall of the through hole 331 and the tube wall of the housing 23 to form a seal, the adhesive covering the lead-out end of the stationary contact component 22 improves the insulation performance of the end of the stationary contact component 22, thereby further enhancing the insulation resistance between the stationary contact component 22 and the moving contact component 21.

[0277] Furthermore, the coating of the lead-out end of the static contact component 22 with the adhesive fixes the lead-out end of the static contact component 22 within the receiving groove 315. The cured adhesive forms a constraint and limiting effect on the lead-out end of the static contact component 22 along its circumference or at least in a local direction, preventing the lead-out end of the static contact component 22 from being displaced or twisted due to vibration or external force during use. At the same time, the adhesive coating the lead-out end of the static contact component 22 can also seal and protect the lead-out end of the static contact component 22, blocking the intrusion of external moisture, dust and other pollutants, and reducing the risk of electrochemical corrosion or insulation deterioration at the lead-out end of the static contact component 22.

[0278] Please refer to Figure 21 and Figure 22 The housing 3 further includes: a first housing 31 and a second housing 32. The first housing 31 is provided with a first partition wall 314. The second housing 32 is installed on the first housing 31 and is provided with a second partition wall 322. The first partition wall 314 is provided with a first groove 3141 at one end facing the second partition wall 322, and the second partition wall 322 is provided with a second groove 3221 at one end facing the first partition wall 314. The first groove 3141 and the second groove 3221 are arranged opposite to each other. The first partition wall 314 and the second partition wall 322 overlap to form an isolation structure 33. The first groove 3141 and the second groove 3221 cooperate to form a through hole 331.

[0279] The housing 3 includes a first housing 31 and a second housing 32. The isolation structure 33 is formed by the overlapping of two separate first partition walls 314 and second partition walls 322, which reduces the complexity of the overall molding of the housing 3. Specifically, the first groove 3141 on the first partition wall 314 and the second groove 3221 on the second partition wall 322 can be molded separately, which is beneficial to improving manufacturing accuracy and yield. During the assembly process, when the second housing 32 is installed on the first housing 31, the first partition wall 314 and the second partition wall 322 are naturally aligned through the overlapping, so that the first groove 3141 and the second groove 3221 together form a through hole 331. The assembly operation is simple and the positioning is reliable. Furthermore, the overlapping fit between the first partition wall 314 and the second partition wall 322 ensures that the first groove 3141 and the second groove 3221 maintain coaxiality and alignment accuracy when they are mated, providing a stable support interface for the housing 23 of the vacuum insulation assembly 2 to pass through the through hole 331 and form a sealed fit. This allows the first housing 31 and the second housing 32 to form a continuous and flat hole wall surface between the first groove 3141 and the second groove 3221, which is beneficial for the uniform fit between the sealing material, such as the adhesive, and the hole wall.

[0280] Furthermore, the first partition wall 314 and the second partition wall 322 overlap and cooperate, so that the first partition wall 314 and the second partition wall 322 overlap each other in the overlapping area, which minimizes the installation gap of the isolation structure 33 formed by the cooperation of the first partition wall 314 and the second partition wall 322, and reduces the surface creepage path that may be formed from the cavity side to the other side, such as the receiving groove 315 side. Therefore, the isolation structure 33 further enhances the electrical isolation reliability between the lead-out end of the stationary contact component 22 and the lead-out end of the moving contact component 21.

[0281] In some embodiments, the vacuum insulation component 2 is mounted on the first housing 31 in a direction perpendicular to its axial direction. Compared with the axial mounting method, the axial mounting method makes it easier to set up a structure for mounting the vacuum insulation component 2 on the first housing 31, achieving a better positioning effect for the vacuum insulation component 2. Furthermore, the installation process of the vacuum insulation component 2 has better visibility, and the installation position can be adjusted during the installation process, thereby facilitating automated or semi-automated assembly.

[0282] Furthermore, in some embodiments, the housing 3 is also provided with a receiving groove 315, the receiving groove 315 and the chamber are respectively located on both sides of the isolation structure 33, the receiving groove 315 is connected to the through hole 331, the receiving groove 315 can be filled with adhesive, and when the adhesive is filled, the adhesive is suitable for flowing into and sealing the gap between the overlapping position of the first partition wall 314 and the second partition wall 322 as well as the gap between the hole wall of the through hole 331 and the outer shell 23. The first housing 31 and the second housing 32 are joined together by the first partition wall 314 and the second partition wall 322 to form an isolation structure 33. There is an objective gap between the overlapping surfaces. In this embodiment, by connecting the receiving groove 315 with the through hole 331, the adhesive not only flows into the gap between the hole wall of the through hole 331 and the tube wall of the outer shell 23 when filling, but also seeps into and fills the gap between the overlapping positions of the first partition wall 314 and the second partition wall 322. After the adhesive is cured, a continuous seal is formed at the two gaps, which further enhances the isolation effect of the isolation structure 33 and reduces the sealing failure problem caused by the gaps in the overlapping surfaces.

[0283] Furthermore, the adhesive forms an integrated solid insulating barrier at the gap between the through hole 331 and the outer shell 23 and at the overlap gap between the first partition wall 314 and the second partition wall 322, thereby achieving better isolation between the lead-out end of the stationary contact assembly 22 and the lead-out end of the moving contact assembly 21 located on the receiving groove 315 side and the chamber side, respectively, and improving the pressure resistance between the lead-out end of the stationary contact assembly 22 and the lead-out end of the moving contact assembly 21.

[0284] It should be noted that in this application, the lead-out ends of the stationary contact component 22 and the lead-out ends of the moving contact component 21 located at both ends of the outer shell 23 are separated by the cooperation between the separately configured first shell 31 and the second shell 32. On the one hand, this can improve the convenience of the overall installation of the vacuum insulation component 2. The vacuum insulation component 2 can be installed on the first shell 31 first. After it is installed in place, the second shell 32 is then installed to achieve initial isolation between the two ends of the outer shell 23. Then, glue is injected on one side of the receiving groove 315, so that the glue flows under pressure to the gap between the overlapping position of the first partition wall 314 and the second partition wall 322, as well as the gap between the first groove 3141 and the second groove 3221 relative to the tube wall of the outer shell 23, to achieve a further isolation effect. Thus, while achieving the effect of easy assembly, the overall insulation performance is enhanced.

[0285] Please continue to refer to Figure 20 and Figure 21 , Figure 22 In some embodiments, the wall of the first groove 3141 is provided with a first adhesive receiving groove 31411, and the wall of the second groove 3221 is provided with a second adhesive receiving groove 32211. The first adhesive receiving groove 31411 and the second adhesive receiving groove 32211 cooperate to form a sealing groove 332 surrounding the outer periphery of the housing 23; and / or, at least one of the overlapping sides of the first partition wall 314 and the second partition wall 322 is provided with an adhesive filling groove 333.

[0286] The first adhesive receiving groove 31411 is disposed on the groove wall of the first groove 3141, and the second adhesive receiving groove 32211 is disposed on the groove wall of the second groove 3221. When the first partition wall 314 and the second partition wall 322 overlap and cooperate, the first adhesive receiving groove 31411 and the second adhesive receiving groove 32211 close together to form a sealing groove 332 surrounding the outer periphery of the outer shell 23. The sealing groove 332 provides a space for the adhesive, so that when the adhesive fills the gap between the hole wall of the through hole 331 and the tube wall of the outer shell 23, it can be gathered in the sealing groove 332. After the adhesive in the sealing groove 332 is cured, it forms a complete sealing ring around the outer shell 23, ensuring that the adhesive can be evenly distributed in the sealing groove 332 and reducing the weak seal caused by uneven flow of adhesive.

[0287] In other embodiments, at least one of the overlapping sides of the first partition wall 314 and the second partition wall 322 is provided with a filling groove 333. The filling groove 333 forms a space for receiving adhesive at the overlapping surface. When the adhesive flows in from the receiving groove 315, it can seep into the filling groove 333 through the gap between the first partition wall 314 and the second partition wall 322, and then fill the gap between the overlapping joint of the first partition wall 314 and the second partition wall 322 after curing. This further extends the creepage distance from the receiving groove 315 side to the chamber side and enhances the insulation performance on both sides of the isolation structure 33. In some embodiments, the sealing groove 332 and the filling groove 333 formed by the first adhesive receiving groove 31411 and the second adhesive receiving groove 32211 cooperate with each other, so that after the adhesive enters the through hole 331 from the receiving groove 315, it fills the sealing groove 332 and the filling groove 333 respectively under pressure, thereby achieving synchronous sealing of the gap and overlap gap between the through hole 331 and the outer shell 23, and achieving a better insulation effect.

[0288] In some embodiments, each sealing groove 332 is connected to a filling groove 333 at both ends, and the sealing grooves 332 are interconnected through the filling grooves 333. The two outermost filling grooves 333 extend to both ends of the isolation structure 33 respectively. Since each sealing groove 332 is connected to a filling groove 333 at both ends, and the sealing grooves 332 are interconnected through the filling grooves 333, it can be understood that the first groove 3141 and the second groove 3221 between the first partition wall 314 and the second partition wall 322 are alternately arranged with the overlapping area along the extending direction of the first partition wall 314 and the second partition wall 322. This ensures that all sealing grooves 332 and filling grooves 333 between the first partition wall 314 and the second partition wall 322 are alternately connected, forming a continuous channel. Therefore, when the adhesive is injected from the receiving groove 315, the adhesive can flow through the continuous channel into each sealing groove 332 and filling groove 333, reducing the blind spots in adhesive filling.

[0289] The two outermost filling grooves 333 extend from opposite ends to both ends of the isolation structure 33, so that the entire continuous channel covers the entire range of the first partition wall 314 and the second partition wall 322 along the corresponding extension direction. This ensures that the adhesive can fill the installation gap between the first partition wall 314 and the second partition wall 322. After curing, the adhesive can completely fill all the gaps at the interface of the first partition wall 314 and the second partition wall 322. The two outermost filling grooves 333 extend to both ends of the isolation structure 33, so that the starting and ending ends of the adhesive filling reach the boundary of the isolation structure 33. This forms a continuous solid sealing layer along the entire overlap length of the isolation structure 33, further enhancing the sealing and insulation performance on both sides of the isolation structure 33 and improving the pressure resistance between the lead-out end of the static contact component 22 and the lead-out end of the moving contact component 21.

[0290] In some embodiments, please refer to Figure 20 The lead-out end of the stationary contact component 22 is located in the receiving groove 315, and the lead-out end of the stationary contact component 22 is at least partially covered in the adhesive. The lead-out end of the stationary contact component 22 is at least partially covered in the adhesive in the receiving groove 315, so that the exposed conductive part of the lead-out end of the stationary contact component 22 is completely covered or partially wrapped by the adhesive. After the adhesive cures, it forms a solid insulating layer, which isolates the lead-out end of the stationary contact component 22 from the external environment and other parts such as the housing 3. Since the receiving groove 315 and the chamber are located on both sides of the isolation structure 33, and the adhesive has filled the gap between the hole wall of the through hole 331 and the tube wall of the housing 23 to form a seal, the insulation performance of the end of the stationary contact component 22 is improved after the lead-out end of the stationary contact component 22 is covered by the adhesive, thereby further enhancing the insulation resistance between the stationary contact component 22 and the moving contact component 21.

[0291] Furthermore, the coating of the lead-out end of the static contact component 22 with the adhesive fixes the lead-out end of the static contact component 22 within the receiving groove 315. The cured adhesive forms a constraint and limiting effect on the lead-out end of the static contact component 22 along its circumference or at least in a local direction, preventing the lead-out end of the static contact component 22 from being displaced or twisted due to vibration or external force during use. At the same time, the adhesive coating the lead-out end of the static contact component 22 can also seal and protect the lead-out end of the static contact component 22, blocking the intrusion of external moisture, dust and other pollutants, and reducing the risk of electrochemical corrosion or insulation deterioration at the lead-out end of the static contact component 22.

[0292] In some embodiments, the vacuum insulation assembly 2 further includes a connection terminal 24, at least a portion of which is located within the second housing 32, and an end of which extends out of and is exposed in the second housing 32. At least a portion of the connection terminal 24 is adapted to extend into the receiving groove 315 and be electrically connected to the lead-out end of the static contact assembly 22. At least a portion of the connecting terminal 24 is located inside the second housing 32, with its end protruding and exposed outside the second housing 32. This allows the portion of the connecting terminal 24 exposed outside the second housing 32 to extend into the receiving groove 315 and electrically connect to the lead-out end of the stationary contact assembly 22. This allows the lead-out end of the stationary contact assembly 22 to transmit electrical signals or power to the outside of the second housing 32 through the connecting terminal 24 while being insulated by the adhesive. This reduces the leakage, damage, or insufficient creepage distance problems that may be caused by the lead-out end of the stationary contact assembly 22 being directly exposed outside the housing 32. The fact that a portion of the connecting terminal 24 is located inside the second housing 32 reduces space occupation and achieves higher integration in a limited space, making it suitable for miniaturized design of the switching device 100. ...

Claims

1. A switching device, characterized by include: The housing includes a first housing, the first housing having an opening, a bottom wall opposite to the opening, and a slot extending from the opening to the bottom wall, the extension direction of the slot being set as a first direction; as well as, A drive assembly includes a magnetic yoke having a magnetically attractive surface for magnetic coupling. The magnetic yoke is independently inserted into the slot along a first direction, the magnetically attractive surface being parallel to the first direction. The magnetic yoke has a set of protrusions, and the slot wall has a limiting groove for inserting the protrusions. The protrusions have two opposite sides facing in a direction perpendicular to the magnetically attractive surface, and in the same direction, the two sides are adapted to abut against different sides of at least one limiting groove. The sides of the protrusions abutting against each other with the limiting grooves both extend along the first direction.

2. The switching device according to claim 1, characterized in that The magnetic yoke has at least two protrusions distributed along a direction perpendicular to the magnetic attraction surface, and each of the protrusions constitutes the protrusion group; along the direction perpendicular to the magnetic attraction surface, each of the two protrusions has one side that abuts against the groove wall of the same limiting groove on different sides, and the side of the protrusion abutting against the limiting groove extends along the first direction; and / or, the two protrusions are respectively inserted into the two limiting grooves, and along the direction perpendicular to the magnetic attraction surface, the two sides of each protrusion abut against the two sides of the corresponding limiting groove, and the side of the protrusion abutting against the limiting groove extends along the first direction.

3. The switching device of claim 2, wherein the first and second switching elements are formed of a semiconductor material. The magnetic yoke has a length direction, and at least one end of the magnetic yoke in the length direction is provided with the magnetic attraction surface.

4. The switching device according to claim 3, characterized in that, The magnetic yoke includes: The first plate extends in a direction perpendicular to the magnetic attraction surface, and its width direction is located in the first direction; A second plate, connected to one end of the first plate and perpendicular to the first plate, extends in a direction close to the moving magnetic component and forms the protrusion. A magnetic attraction surface is formed on the side of the second plate facing the other end of the first plate. The third plate is connected to the other end of the first plate and is perpendicular to the first plate. The third plate extends in a direction close to the moving magnetic component and forms the protrusion. The magnetic attraction surface is formed on the side of the third plate facing the second plate.

5. The switching device according to claim 3, characterized in that, The magnetic yoke includes: The fourth plate extends in a direction perpendicular to the magnetic attraction surface, with its width direction located in the first direction. A protruding protrusion is provided on one side of the fourth plate in the thickness direction, and both end faces of the fourth plate along its extension direction are adapted to form the magnetic attraction surface.

6. The switching device according to claim 5, characterized in that, Along the first direction, the protrusion on the fourth plate is located on the side of the fourth plate near the opening. One of the sides of the fourth plate near the bottom wall and the bottom wall is provided with a limiting protrusion, and the other is provided with a limiting groove. The limiting protrusion and the limiting groove are inserted and engaged. Along the direction perpendicular to the magnetic attraction surface, the two sides of the limiting protrusion are respectively abutted against the two sides of the limiting groove. At least one pair of abutting surfaces of the limiting protrusion and the limiting groove extend along the first direction.

7. The switching device according to claim 5, characterized in that, The fourth plate is a stamped part.

8. The switching device according to claim 7, characterized in that, Along the thickness direction of the fourth plate, the thickness of the protrusion is less than or equal to two-thirds of the thickness of the fourth plate.

9. The switching device according to claim 5, characterized in that, Along the thickness direction of the fourth plate, the insertion depth of the protrusion and the limiting groove is less than or equal to two-thirds of the thickness of the protrusion.

10. The switching device according to claim 1, characterized in that, The magnetic yoke is provided with a protrusion, which constitutes the protrusion group. The two sides of the protrusion along the direction perpendicular to the magnetic attraction surface are respectively attached to the two groove walls of the corresponding limiting groove, and the sides of the protrusion that are attached to the limiting grooves extend along the first direction.

11. The switching device according to claim 10, characterized in that, The protrusion extends in a direction perpendicular to the magnetic attraction surface, and the length of the protrusion in the direction perpendicular to the magnetic attraction surface is greater than or equal to half the length of the magnetic yoke in the direction perpendicular to the magnetic attraction surface.

12. The switching device according to claim 1, characterized in that, The limiting groove has at least one arc-shaped side that abuts against the protrusion group; or, the limiting groove has at least one rib extending along the first direction on one side that abuts against the protrusion group, and the rib has an arc-shaped side that abuts against the protrusion group.

13. The switching device according to claim 1, characterized in that, The bottom wall is provided with a limiting part corresponding to the magnetic yoke. The side of each limiting part facing the opening is an abutting surface, and each abutting surface abuts against the magnetic yoke to limit the magnetic yoke in the direction from the opening toward the bottom wall.

14. The switching device according to claim 13, characterized in that, The magnetic yoke corresponds to at least two of the limiting portions. Each of the limiting portions corresponding to the magnetic yoke is distributed along a direction perpendicular to the magnetic attraction surface, and each of the abutting surfaces is flush with the first direction. The magnetic yoke abuts against each of the corresponding abutting surfaces.

15. The switching device according to claim 1, characterized in that, One of the magnetic yoke and the bottom wall is provided with a limiting protrusion, and the other is provided with a limiting groove; the limiting protrusion is used to insert and cooperate with the limiting groove, and along the direction perpendicular to the magnetic attraction surface, the two sides of the limiting protrusion are respectively abutted against the two sides of the limiting groove, and at least one pair of abutting sides of the limiting protrusion and the limiting groove extend along the first direction.

16. The switching device according to claim 15, characterized in that, The magnetic yoke corresponds to multiple limiting protrusions and limiting grooves, and each limiting protrusion and each limiting groove corresponds one-to-one.

17. The switching device according to claim 1, characterized in that, Along a direction parallel to the magnetic attraction surface and perpendicular to the first direction, both sides of the slot wall are in contact with the corresponding magnetic yoke.

18. The switching device according to claim 17, characterized in that, Along a direction perpendicular to the magnetic attraction surface and perpendicular to the first direction, at least one groove wall of the slot for engaging with the magnetic yoke is provided with at least one rib, the rib being adapted to abut against the magnetic yoke.

19. The switching device according to claim 18, characterized in that, The side of the rib that is used to abut against the magnetic yoke is curved.

20. The switching device according to claim 1, characterized in that, The first housing further includes at least two baffles, each of which is connected to the bottom wall. The slot is formed by the enclosure of at least two baffles. Each baffle includes at least two cross-connected support walls that are perpendicular to the bottom wall. Some of the support walls are baffles, and the baffles form the groove walls of the corresponding slot.

21. The switching device according to claim 20, characterized in that, Some of the supporting walls are reinforced with ribs, and each of the reinforcing ribs is cross-connected to the side of the corresponding baffle wall away from the slot.

22. The switching device according to claim 21, characterized in that, Each of the reinforcing ribs is perpendicularly connected to the baffle wall.

23. The switching device according to claim 21, characterized in that, Some of the supporting walls are connecting walls, and the connecting walls are connected to each of the reinforcing ribs.

24. The switching device according to claim 23, characterized in that, The connecting wall is perpendicularly connected to the reinforcing rib.

25. The switching device according to claim 20, characterized in that, The drive assembly further includes a permanent magnet, and the number of magnetic yokes is at least two, wherein the two magnetic yokes are a first magnetic yoke and a second magnetic yoke, respectively. Along a direction parallel to the magnetic attraction surface and perpendicular to the first direction, the permanent magnet is fitted between the first magnetic yoke and the second magnetic yoke so that the first magnetic yoke and the second magnetic yoke have opposite magnetisms. Along a direction perpendicular to the magnetic attraction surface, the permanent magnet is attached to the space between the two retaining walls.

26. The switching device according to claim 25, characterized in that, The driving assembly further includes a coil assembly and a moving magnetic conductor assembly. At least a portion of the moving magnetic conductor assembly is slidably disposed on the inner periphery of the coil assembly. The magnetic yoke is located on the outer side of the coil assembly. The number of magnetic yokes is at least four, and each magnetic yoke constitutes a magnetic yoke assembly. The magnetic yoke assembly has two pairs of first magnetic yokes and second magnetic yokes with opposite magnetic properties. The two pairs of first magnetic yokes and second magnetic yokes are respectively disposed on both sides of the coil assembly along one of its radial directions.

27. The switching device according to claim 26, characterized in that, The first magnetic yoke, the second magnetic yoke, and each of the retaining walls on both sides of the coil assembly are symmetrically arranged about the plane passing through the axial direction of the coil assembly and parallel to the first direction.

28. The switching device according to claim 1, characterized in that, The slot that engages with the magnetic yoke has a first adhesive wall on at least one side, and a gap is formed between the first adhesive wall and the magnetic yoke, with the space between them used for injecting adhesive.

29. The switching device according to claim 28, characterized in that, Along the direction from the opening to the bottom wall, the first adhesive wall includes at least two inclined walls connected in sequence, the inclined walls being set at an angle relative to the first direction; from the direction from the opening to the bottom wall, the angle between each of the inclined walls and the first direction gradually decreases.

30. The switching device according to claim 28, characterized in that, The drive unit further includes a permanent magnet component, and the number of magnetic yokes is at least two, wherein the two magnetic yokes are respectively a first magnetic yoke and a second magnetic yoke. Along a direction parallel to the magnetic attraction surface and perpendicular to the first direction, the permanent magnet component is fitted and installed between the first magnetic yoke and the second magnetic yoke so that the first magnetic yoke and the second magnetic yoke have opposite magnetism. The first adhesive wall that cooperates with the first magnetic yoke is located on the side of the first magnetic yoke facing away from the permanent magnet, and the first adhesive wall that cooperates with the second magnetic yoke is located on the side of the second magnetic yoke facing away from the permanent magnet.

31. The switching device according to claim 1, characterized in that, The driving assembly further includes a coil assembly and a moving magnetic component. At least a portion of the moving magnetic component is slidably disposed on the inner periphery of the coil assembly. The moving magnetic component and the coil assembly form an anti-rotation fit through non-rotational surface contact. Alternatively, the coil assembly has a sliding hole. The moving magnetic component has a sliding portion that slides with the sliding hole. One of the sliding hole wall and the outer wall of the sliding plate portion has an anti-rotation protrusion, and the other has an anti-rotation groove. The anti-rotation protrusion and the anti-rotation groove extend along the operating direction of the moving magnetic component, and the anti-rotation protrusion and the anti-rotation groove form an anti-rotation fit through non-rotational surface contact.

32. The switching device according to claim 31, characterized in that, The drive assembly further includes a permanent magnet; the number of yokes is at least two, wherein the two yokes are a first yoke and a second yoke, respectively; the permanent magnet is connected between the first yoke and the second yoke so that the first yoke and the second yoke have opposite magnetic properties; when the coil assembly is energized, the two ends of the moving magnetic component can be magnetically coupled with the first yoke and the second yoke respectively and generate a magnetic attraction force, so that the moving magnetic component slides relative to the coil assembly to one side.

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