Electromagnetic driving mechanism, relay, power distribution box and power distribution system

Abstract

The embodiment of the invention discloses an electromagnetic driving mechanism, a relay, a power distribution box and a power distribution system, and the electromagnetic driving mechanism comprises a yoke piece, a first permanent magnet piece, a second permanent magnet piece, and a driving assembly. A non-magnetic area is arranged between the first permanent magnet part and the second permanent magnet part; the driving assembly comprises a coil, a coil rack, a first movable iron core and a second movable iron core; the coil is wound on the coil rack; the first movable iron core position and the second movable iron core are arranged on the two sides of the coil respectively; the driving assembly is movably assembled between the first permanent magnet part and the second permanent magnet part in the second direction and is provided with a first holding position and a second holding position. When the driving assembly is located at the first holding position, the first movable iron core is in contact with the yoke iron piece; and when the driving assembly is located at the second holding position, the second movable iron core is in contact with the yoke iron piece. The non-magnetic area is arranged in the middle of the bipolar permanent magnet to weaken an annular magnetic field, and meanwhile, the yoke iron piece and the iron core provide holding force on two holding positions, so that the magnetic field utilization rate of the electromagnetic driving mechanism is improved.

Description

Technical Field

[0001] This application relates to the field of relay structure technology, and in particular to an electromagnetic drive mechanism, a relay, a distribution box, and a power distribution system. Background Technology

[0002] From the perspective of the internet data center (IDC) industry, as users become increasingly reliant on data, it is crucial to prevent service interruptions to IDC data center communication equipment. To ensure power continuity and support normal equipment operation, a power supply architecture with a main power supply and a backup power supply is typically employed. In the event of a main power supply failure, a relay system quickly switches to the backup power supply, restoring normal power supply.

[0003] Relays are generally classified into coil-locked and magnetic-locked types according to their holding method. Magnetic-locked relays are widely used in automatic control circuits due to their low efficiency, good mechanical properties, and high reliability.

[0004] The magnetic circuit of a magnetic latching relay is a closed-loop structure consisting of a yoke, armature, coil, iron core, and permanent magnet. When in the latching state, the permanent magnet flux passes through the iron core-yoke-armature, forming a closed loop. The latching force between the contacts is provided by the permanent magnet. For the relay to operate, current must be applied to the coil in different directions. Utilizing the principle that a energized coil experiences the Lorentz force in a magnetic field, the coil is configured as a moving part, such as... Figure 1 As shown, the switching function of the relay can be completed by the movement of the coil driving the contacts.

[0005] The electromagnetic drive mechanism of this type of relay uses a coil-operated scheme, requiring, for example... Figure 2 The two bipolar permanent magnets shown provide the magnetic field to drive the coil. The coil is positioned between the two bipolar permanent magnets. By applying current in different directions to the coil, it moves left and right as shown in the figure. However, a circular magnetic field 100 exists at the point where the magnetic force of the bipolar permanent magnets changes, causing some loss of magnetic flux flowing through the moving iron core, thus reducing the utilization rate of the magnetic field. At the same time, there is a potential risk of polarization between the coil, the iron core, and the yoke, which can negatively affect the magnetic circuit characteristics. Summary of the Invention

[0006] This application provides an electromagnetic drive mechanism, a relay, a distribution box, and a power distribution system to improve magnetic field utilization.

[0007] The first aspect of this application provides an electromagnetic drive mechanism, including a yoke, a first permanent magnet, a second permanent magnet, and a drive assembly;

[0008] The yoke includes two inner walls that are opposite each other along a first direction;

[0009] The first permanent magnet component includes a first sub-permanent magnet component and a second sub-permanent magnet component; the first sub-permanent magnet component and the second sub-permanent magnet component are arranged along a second direction on an inner wall; the second direction is staggered with the first direction;

[0010] The second permanent magnet component includes a third sub-permanent magnet component and a fourth sub-permanent magnet component; the third sub-permanent magnet component and the fourth sub-permanent magnet component are arranged along the second direction on another inner wall;

[0011] The magnetic poles of the first and third sub-permanent magnets are in the first direction, while the magnetic poles of the second and fourth sub-permanent magnets are in the opposite direction to the first direction.

[0012] The drive assembly includes a coil, a coil frame, a first moving iron core, and a second moving iron core;

[0013] The coil is wound on a coil frame; the coil plane is perpendicular to the first direction; the coil includes a first half-ring and a second half-ring connected to each other; the first half-ring is located between the first sub-permanent magnet and the third sub-permanent magnet, and the second half-ring is located between the second sub-permanent magnet and the fourth sub-permanent magnet.

[0014] The first moving iron core is located on the side of the first half-ring that is away from the second half-ring;

[0015] The second moving iron core is located on the side of the second half-ring that is away from the first half-ring;

[0016] The drive assembly is movably mounted between the first permanent magnet and the second permanent magnet along the second direction, and has a first holding position and a second holding position;

[0017] When the drive assembly is in the first holding position, the first moving iron core contacts the yoke; when the drive assembly is in the second holding position, the second moving iron core contacts the yoke.

[0018] A first non-magnetic region is included between the first and second sub-permanent magnet components; a second non-magnetic region is included between the third and fourth sub-permanent magnet components; the magnetic induction intensity of the first and second non-magnetic regions is lower than a preset value.

[0019] The electromagnetic drive mechanism provided in this application provides holding force at two holding positions through the yoke and the iron core. At the same time, by setting a non-magnetic zone in the middle of each permanent magnet, magnetic flux loss is reduced, the holding force of the drive component at the holding position is improved, and the magnetic field utilization rate is enhanced.

[0020] In one possible implementation, the first permanent magnet and the second permanent magnet are magnetized permanent magnets;

[0021] In one possible implementation, the first sub-permanent magnet component, the second sub-permanent magnet component, the third sub-permanent magnet component, and the fourth sub-permanent magnet component are independent permanent magnets;

[0022] The first and second sub-permanent magnet components are spaced apart, and the space between the first and second sub-permanent magnet components is a first non-magnetic zone;

[0023] The third and fourth sub-permanent magnet components are spaced apart, and the space between the third and fourth sub-permanent magnet components is the second non-magnetic zone.

[0024] In one possible implementation, the yoke component includes a U-shaped yoke and an iron plate;

[0025] The U-shaped yoke includes a first side, a bent side, and a second side, with the first side and the second side being parallel.

[0026] The first permanent magnet is fitted to the inner wall of the first side, and the second permanent magnet is fitted to the inner wall of the second side.

[0027] The first and second sides are positioned and assembled with the iron plate to form a cavity, and the drive component is set in the cavity.

[0028] In one possible implementation, the yoke comprises two C-shaped yokes;

[0029] Two C-shaped yokes are symmetrically assembled and form a cavity, in which the drive assembly is located;

[0030] The first permanent magnet and the second permanent magnet are respectively disposed on the inner wall of the assembly surface between the two C-shaped yokes;

[0031] The central axes of the first and second non-magnetic zones are on the same plane as the two assembly surfaces.

[0032] In one possible implementation, the yoke comprises two L-shaped yokes;

[0033] Two L-shaped yokes are assembled symmetrically at the center and form a cavity, in which the drive assembly is located.

[0034] In one possible implementation, the yoke has a slot.

[0035] The slot is opened on the contact surface that contacts the first moving iron core and the second moving iron core;

[0036] The direction of the slot is perpendicular to the first direction.

[0037] In one possible implementation,

[0038] The first permanent magnet and the yoke are positioned and assembled by a matching first splicing platform and a first splicing interface.

[0039] And / or, the second permanent magnet and the yoke are positioned and assembled through a compatible second splicing platform and a second splicing interface.

[0040] In one possible implementation, the driving component also includes an insulating frame;

[0041] The coil and coil frame are housed within an insulating frame; the first moving iron core and the second moving iron core are housed outside the insulating frame. In one possible implementation, the drive assembly further includes a guide shaft;

[0042] The guide shaft is connected to the insulating frame along the second direction and is located on the outside of the first moving iron core and / or the second moving iron core away from the coil;

[0043] The yoke has a guide hole for the guide shaft to pass through and reciprocate, and the guide shaft and the guide hole are in sliding contact.

[0044] In one possible implementation, the drive assembly also includes a third moving iron core disposed on the coil frame;

[0045] The third moving iron core is located inside the coil.

[0046] In one possible implementation, the insulating support also includes a limiting rib;

[0047] The limiting rib is set on the main frame and is located between the first permanent magnet and the second permanent magnet;

[0048] The drive assembly makes sliding contact with the first and second permanent magnets via limiting ribs.

[0049] In one possible implementation, the insulating support also includes two limiting plates;

[0050] Two limiting plates are respectively set on the two end faces of the main frame;

[0051] The position of the limiting plate is parallel to the direction of movement and perpendicular to the first permanent magnet and the second permanent magnet.

[0052] The drive assembly slides in contact with the end faces of the first and second permanent magnets via a limiting plate.

[0053] In one possible implementation, two sets of wiring devices are provided on the insulating frame;

[0054] Each wiring unit includes a wiring channel and a lead interface;

[0055] The two leads of the coil are led out through the lead interfaces of two sets of wiring devices and then fixed in the wiring slot.

[0056] In one possible implementation, the wiring device further includes wire clamps;

[0057] After the lead wire is led out from the wiring channel, it is limited by the wire clamp.

[0058] In one possible implementation, an isolation boss is also provided on the insulating frame;

[0059] The isolation boss is positioned between the two wire clamps;

[0060] Two leads are respectively placed on both sides of the isolation boss.

[0061] A second aspect of this application provides a relay, including a base, a push rod assembly, and an electromagnetic drive mechanism as described in the first aspect above;

[0062] The electromagnetic drive mechanism is located in the base;

[0063] One end of the push rod assembly is connected to the drive assembly of the electromagnetic drive mechanism;

[0064] A stationary contact assembly is provided on the base, and a moving contact assembly is provided on the push rod assembly;

[0065] The stationary contact assembly and the moving contact assembly are configured accordingly.

[0066] In one possible implementation, a lead hook and a coil pin are provided on the base;

[0067] After the lead wire of the drive component's coil is fixed by the lead wire hook, it is connected to the coil pin.

[0068] A third aspect of this application provides a power distribution box, including a circuit board and the relay described in the second aspect above, wherein the relay is electrically connected to the circuit board.

[0069] The fourth aspect of this application provides a power distribution system, including electrical equipment and a distribution box as described in the third aspect above, wherein the electrical equipment and the distribution box are electrically connected.

[0070] The beneficial effects of the technical solutions provided in the second to fourth aspects above can be referred to the beneficial effects of the technical solutions in the first aspect, and will not be repeated here. Attached Figure Description

[0071] Figure 1 This is a schematic diagram illustrating the principle of a current-carrying coil experiencing the Lorentz force in a magnetic field.

[0072] Figure 2 A schematic diagram of the magnetic field that provides the driving coil for two permanent magnets;

[0073] Figure 3a An exploded view of the relay provided in the embodiments of this application;

[0074] Figure 3b This is a top view of a portion of the assembled structure of the relay provided in an embodiment of this application;

[0075] Figure 4This is a schematic diagram illustrating the operating principle of the electromagnetic drive mechanism provided in the embodiments of this application;

[0076] Figure 5 This is an assembly diagram of the yoke and two permanent magnets of the electromagnetic drive mechanism provided in the embodiments of this application.

[0077] Figure 6 This is a schematic diagram of the partitioning of the first permanent magnet component of the electromagnetic drive mechanism provided in the embodiments of this application;

[0078] Figure 7a This is an exploded view of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 7b This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application;

[0079] Figure 8 This is an assembly drawing of the electromagnetic drive mechanism provided in the embodiments of this application;

[0080] Figure 9 This is an exploded view of the electromagnetic drive mechanism provided in the embodiments of this application;

[0081] Figure 10 This is a schematic diagram of some parts of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application;

[0082] Figures 11a to 11c This is a schematic diagram of the slotted yoke of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 11d This is an assembly drawing of the electromagnetic drive mechanism provided in the embodiments of this application;

[0083] Figure 12a This is a cross-sectional view of the magnetic circuit of the electromagnetic drive mechanism in the embodiment of this application where the yoke does not have a slot. Figure 12b A cross-sectional view of the magnetic circuit of the electromagnetic drive mechanism with a slot in the yoke in an embodiment of this application.

[0084] Figure 13 This is a schematic diagram of the coil frame e1 and coil assembly of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application;

[0085] Figure 14 A schematic diagram of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application;

[0086] Figure 15 An exploded view of the drive assembly of the electromagnetic drive mechanism provided in an embodiment of this application;

[0087] Figure 16 This is a top view of one of the limiting plates of the drive assembly of the electromagnetic drive mechanism provided in an embodiment of this application;

[0088] Figure 17This is a wiring diagram of the electromagnetic drive mechanism provided in an embodiment of this application;

[0089] Figure 18 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application;

[0090] Figure 19a and Figure 19b This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application;

[0091] Figure 20 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application;

[0092] Figure 21a and Figure 21b This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application;

[0093] Figure 22 A schematic diagram of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application;

[0094] Figure 23 This is an exploded view of the electromagnetic drive mechanism provided in the embodiments of this application;

[0095] Figure 24 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application;

[0096] Figure 25a and Figure 25b This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application;

[0097] Figure 26 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application;

[0098] Figure 27 This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application;

[0099] Figures 28a to 28c This is an assembly diagram of the yoke and the two-stage permanent magnet of the electromagnetic drive mechanism provided in the embodiments of this application;

[0100] Figure 29 An exploded view of the relay provided in the embodiments of this application;

[0101] Figure 30 This is a schematic diagram of the structure of the moving contact assembly of the relay provided in the embodiments of this application;

[0102] Figure 31 An exploded view of the push rod assembly of the relay provided in the embodiments of this application;

[0103] Figures 32a to 32g This is a schematic diagram of the structure of the relay base provided in an embodiment of this application;

[0104] Figure 33 This is a schematic diagram of the power distribution box provided in an embodiment of this application. Detailed Implementation

[0105] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application are described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Those skilled in the art will understand that with the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0106] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0107] It should be understood that, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0109] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0110] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0111] This application provides an electromagnetic drive mechanism, a relay, a distribution box, and a power distribution system. The permanent magnet of the electromagnetic drive mechanism has a non-magnetic region in the middle, which weakens the annular magnetic field and reduces the magnetic flux loss in the magnetic circuit caused by the annular magnetic field. At the same time, an insulating support is provided on the coil drive assembly to wrap the coil and coil frame, ensuring the safe isolation of the coil from other metal parts in the magnetic circuit. This avoids the risk of polarization of metal parts such as permanent magnets, iron cores, and yokes, and improves the magnetic field utilization rate of the electromagnetic drive mechanism.

[0112] Please see Figure 3a and Figure 3b , Figure 3a This is an exploded view of the relay provided in the embodiment of this application. Figure 3b This is a top view of the assembled portion of the relay provided in an embodiment of this application, including a housing a, an electromagnetic drive mechanism b, a push rod assembly c, and a base d. The electromagnetic drive mechanism b includes a drive mechanism e. For ease of observation, Figure 3b The outer shell 'a' has been removed.

[0113] The push rod assembly c is equipped with a moving contact assembly, and the base d is equipped with a stationary contact assembly. The assembled stationary contact assembly and moving contact assembly are positioned correspondingly. The push rod assembly c is driven by the drive mechanism e, which further drives different moving contact assemblies to contact the corresponding stationary contact assemblies to complete the relay switching action.

[0114] The relay provided in this application embodiment can be applied to a dual-path hybrid power supply scenario for high-security equipment such as data centers / public cloud servers and switches. When a single path power failure occurs, the relay can quickly switch to the backup power supply, reducing system power outage time, minimizing data loss, and preventing business losses.

[0115] The driving mechanism b provided in this embodiment employs a permanent magnet component containing a non-magnetic region to provide a magnetic field for the coil's movement. By applying forward and reverse energizing to the coil within the magnetic field, an Ampere driving force is generated, coupling the movement of the iron core to achieve bidirectional switching. The characteristic of the permanent magnet component containing a non-magnetic region is that it reduces the impact of existing technologies such as... Figure 2 The annular magnetic field 100 in the middle of the permanent magnet component shown causes magnetic flux loss in the holding force magnetic circuit, thus improving magnetic field utilization. Simultaneously, the static and dynamic performance of the magnetic mechanism can be optimized by adjusting the width of the non-magnetic region.

[0116] The electromagnetic drive mechanism provided in the embodiments of this application will be described in detail below.

[0117] Please see Figure 4 and Figure 5 , Figure 4 This is a schematic diagram illustrating the operating principle of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 5 This is an assembly diagram of the yoke and two permanent magnets of the electromagnetic drive mechanism provided in the embodiments of this application.

[0118] The electromagnetic drive mechanism provided in this application embodiment includes a yoke, a first permanent magnet b3, a second permanent magnet b4, and a drive assembly e, wherein:

[0119] The yoke includes two inner walls that are opposite each other along a first direction.

[0120] The first permanent magnet component b3 includes a first sub-permanent magnet component b38 and a second sub-permanent magnet component b39; the first sub-permanent magnet component b38 and the second sub-permanent magnet component b39 are arranged on an inner wall along a second direction; the second direction is intersected with the first direction;

[0121] The second permanent magnet component b4 includes a third sub-permanent magnet component b48 and a fourth sub-permanent magnet component b49; the third sub-permanent magnet component b48 and the fourth sub-permanent magnet component b49 are arranged along the second direction on another inner wall.

[0122] For ease of understanding, Figure 4 For reference, the first direction is upward, and the second direction is to the right. The first and second directions can be perpendicular to each other.

[0123] The first permanent magnet b3 and the second permanent magnet b4 are spaced apart on two opposite inner walls of the yoke. The first permanent magnet b3 and the second permanent magnet b4 should have the same characteristics to provide a stable magnetic force. Specifically, the first sub-permanent magnet b38 and the third sub-permanent magnet b48 have the same magnetic pole direction, which is the first direction; the second sub-permanent magnet b39 and the fourth sub-permanent magnet b49 have the same magnetic pole direction, which is the opposite direction to the first direction.

[0124] It is understandable that the first permanent magnet b3 and the second permanent magnet b4 are placed in parallel, and there is a parallel magnetic field in the first direction in the region between the first sub-permanent magnet b38 and the third sub-permanent magnet b48, and there is a parallel magnetic field in the opposite direction in the region between the second sub-permanent magnet b39 and the fourth sub-permanent magnet b49.

[0125] by Figure 4 For reference, there is an upward parallel magnetic field between the first sub-permanent magnet b38 and the third sub-permanent magnet b48. When a current flows inward through the current-carrying wire between them, according to the left-hand rule, the current-carrying wire will generate a rightward Ampere force. Similarly, there is a downward parallel magnetic field between the second sub-permanent magnet b39 and the fourth sub-permanent magnet b49. When a current flows outward through the current-carrying wire between them, a rightward Ampere force will also be generated. Therefore, by changing the direction of the current in the wire, the wire can be moved to the left or right, thereby realizing the circuit switching function of the relay.

[0126] In this embodiment of the application, the permanent magnet component further includes a non-magnetic region, specifically a first non-magnetic region b31 between the first sub-permanent magnet component b38 and the second sub-permanent magnet component b39, and a second non-magnetic region b41 between the third sub-permanent magnet component b48 and the fourth sub-permanent magnet component b49.

[0127] Taking the first permanent magnet component b3 as an example, please refer to [link / reference]. Figure 6 , Figure 6 This is a schematic diagram of the partitioning of the first permanent magnet b3 of the electromagnetic drive mechanism provided in an embodiment of this application. Figure 6 As shown, a non-magnetic region b33 of a certain width b35 is set at a certain distance to the left and right of the permanent magnet centerline b34 of the first permanent magnet component b3.

[0128] In one possible implementation, the first and second permanent magnets can be magnetized permanent magnets, in which case a non-magnetic region is achieved by adjusting the magnetization method.

[0129] Understandably, the fabrication of a magnetized permanent magnet primarily involves placing the flat magnet to be magnetized between the upper and lower magnetizing poles of a magnetizing device. The upper and lower magnetizing poles, through coil winding, can generate magnetizing magnetic fields in two directions on a single magnetizing pole. One method for creating a non-magnetic region involves creating a gap in the middle of the coil on the magnetizing pole, thus creating a non-magnetic barrier between the two magnetic fields. When the magnet is magnetized, a non-magnetic region is formed in the corresponding area. The width of the non-magnetic region can be changed by adjusting the size of the gap on the pole. Another method for creating a non-magnetic region involves not creating a gap in the coil on the magnetizing pole, but instead wrapping the magnet to be magnetized with galvanized iron sheet for magnetization, thereby creating a non-magnetic region. The size of the non-magnetic region can be adjusted by changing the size of the galvanized iron sheet.

[0130] The following will use the first non-magnetic region b31 of the first permanent magnet b3 as an example to define the non-magnetic region referred to in the embodiments of this application, and explain how to identify it:

[0131] The non-magnetic region in this embodiment is not literally completely devoid of magnetism, because magnetic fields exist at both ends of this region. When measuring this region using a magnetic gauge, the test results cannot be avoided due to the influence of the magnetic poles on both sides. Therefore, a certain magnetic induction intensity will still be measured in this region. Thus, it can be defined that when measuring the surface magnetism of the centerline of the non-magnetic region of the permanent magnet component, if the magnetic induction intensity is below 20mt, it can be identified as a non-magnetic region. Since the permanent magnet component involved in this application can adjust the width of the non-magnetic region according to the performance requirements of the electromagnetic drive mechanism to improve the static and dynamic characteristics of the mechanism, the adjustable width of the non-magnetic region can be further defined: the adjustment range of the width b35 of the non-magnetic region is from 0.3 * the thickness b36 of the permanent magnet component to the width b37 of the permanent magnet component.

[0132] In this embodiment, the yoke can specifically be composed of a U-shaped yoke b1 and an iron plate b2. Specifically, the U-shaped yoke b1 includes a first side, a bent side, and a second side. The first side and the second side are parallel and arranged along a first direction. The bent side is used to connect the first side and the second side. The first permanent magnet b3 and the second permanent magnet b4 are respectively fitted to the inner walls of the first side and the second side of the U-shaped yoke b1.

[0133] The first and second sides of the U-shaped yoke b1 are positioned and assembled with the iron plate to form a cavity. Please refer to [link / reference needed] for details. Figure 7a and Figure 7b , Figure 7a This is an exploded view of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 7b This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application.

[0134] The U-shaped yoke b1 and the iron plate b2 are assembled by having the first slot b14, the second slot b15, the third slot b16 and the fourth slot b17 on the U-shaped yoke b1 overlap with the first boss b22, the second boss b23, the third boss b24 and the fourth boss b25 on the iron plate b2, respectively, to achieve positioning and assembly.

[0135] In one possible implementation, the first permanent magnet and the yoke are positioned and assembled via a compatible first splicing platform and a first splicing interface; and / or, the second permanent magnet and the yoke are positioned and assembled via a compatible second splicing platform and a second splicing interface. The first splicing platform can be disposed on the first permanent magnet and the first splicing interface on the yoke, or vice versa; both configurations achieve the positioning and assembly effect. The assembly between the second permanent magnet and the yoke is similar and will not be elaborated further here.

[0136] Specifically, the first permanent magnet component b3 and the second permanent magnet component b4 are respectively provided with a first permanent magnet boss b32 (first splicing platform) and a second permanent magnet boss b42 (second splicing platform), which are engaged and fixed with the slots (first splicing interface and second splicing interface) of the bent portion of the U-shaped yoke b1. It can be understood that a cavity is formed inside the assembled yoke (between the two permanent magnet components), and the drive assembly is disposed within this cavity. Furthermore, the U-shaped yoke b1 is also provided with a protrusion b18, which is riveted to fix the iron plate b2. Because a riveting method is used, there is no need for adhesive bonding, thus avoiding the generation of potentially corroding harmful gases.

[0137] The driving components in the embodiments of this application will be described next. Please refer to... Figure 8 and Figure 9 , Figure 8 This is an assembly diagram of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 9 This is an exploded view of the electromagnetic drive mechanism provided in the embodiments of this application.

[0138] Drive component e (reference numerals are located in the attached diagram) Figure 3a and Figure 4 The first permanent magnet (b3) is assembled at the interval between the second permanent magnet (b4). The drive assembly includes a coil (e2), a coil frame (e1), a first moving iron core (e3), and a second moving iron core (e5). The coil (e2) is wound on the coil frame (e1), and the plane containing the coil (e2) is perpendicular to the first direction.

[0139] Coil e2 includes two connected left and right half-rings, namely the first half-ring e21 (left half-ring) and the second half-ring e22 (right half-ring). When the driving assembly is positioned in the interval between the first permanent magnet b3 and the second permanent magnet b4, the first half-ring e21 is located between the first sub-permanent magnet and the third sub-permanent magnet, and the second half-ring e22 is located between the second sub-permanent magnet and the fourth sub-permanent magnet.

[0140] by Figure 8For reference, when the coil is energized, the Lorentz force generated by the first half-ring (left half-ring) and the second half-ring (right half-ring) of coil e2 under the magnetic field of the first permanent magnet b3 and the second permanent magnet b4 serves as the driving force, allowing the driving assembly to move left or right. For a detailed explanation of the principle, please refer to the above text. Figure 4 The relevant descriptions will not be repeated here.

[0141] The first moving iron core e3 is located on the side of the first half-ring away from the second half-ring, and the second moving iron core e5 is located on the side of the second half-ring away from the first half-ring, that is, with Figure 8 For reference, the first moving iron core e3 is located on the left side of the left half ring, and the second moving iron core e5 is located on the right side of the right half ring.

[0142] The drive assembly is movably mounted between the first permanent magnet b3 and the second permanent magnet b4 along a second direction, and has a first holding position and a second holding position; when the drive assembly is in the first holding position, the first moving iron core e3 contacts the yoke; when the drive assembly is in the second holding position, the second moving iron core e5 contacts the yoke. Figure 8 For reference, the drive assembly is in the first holding position at this time, the first moving iron core e3 is in contact with the bent edge of the U-shaped yoke b1, and the first permanent magnet b3, the second permanent magnet b4, the first moving iron core e3 and the U-shaped yoke b1 provide the holding force in the first holding position.

[0143] In the actual assembly process, the first permanent magnet b3 and the second permanent magnet b4 are first inserted into the U-shaped yoke b1 using a tooling fixture, then the drive assembly e is placed in, and finally the iron plate b2 is riveted to the U-shaped yoke b1 to complete the assembly. After the electromagnetic drive mechanism is assembled, the first permanent magnet b3, the second permanent magnet b4, the first moving iron core e3, the second moving iron core e5, the U-shaped yoke b1, and the iron plate b2 work together to provide holding forces on both sides to achieve magnetic retention in the opening and closing positions.

[0144] The electromagnetic drive mechanism provided in this application reduces magnetic flux loss on the main magnetic circuit core caused by the ring magnetic field by setting a certain width of non-magnetic zone at the centerline of the permanent magnet, thereby improving magnetic field utilization. Simultaneously, to address the risk of polarization of the iron parts around the coil in a compact design, an insulating support is used to wrap the coil, forming an insulator around it. This support is integrated with the moving iron cores (first and second moving iron cores) into a single part, simplifying the assembly process and improving manufacturing efficiency.

[0145] The driving components provided in the embodiments of this application will be further described below:

[0146] In one possible implementation, please refer to Figure 10 , Figure 10This is a schematic diagram of some parts of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application, as shown below. Figure 10 As shown, the drive assembly also includes a third moving iron core e4, which is disposed within the coil e2. Specifically, the third moving iron core e4 can be inserted into the coil frame e1 by creating a slot e11 in the center of the coil frame e1, forming an electromagnetic drive system composed of a U-shaped yoke b1, an iron plate b2, a first permanent magnet b3, a second permanent magnet b4, a first moving iron core e3, a second moving iron core e5, a third moving iron core e4, and the coil e2. Under the same process, the configuration with the third moving iron core e4 results in more magnetic lines of force and a greater holding force.

[0147] In one possible implementation, please refer to Figures 11a to 11d , Figures 11a to 11c This is a schematic diagram of the slotted yoke of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 11d This is an assembly diagram of the electromagnetic drive mechanism provided in the embodiments of this application.

[0148] The yoke has a slot, which is located on the contact surface with the first and second moving iron cores, and the direction of the slot is perpendicular to the first direction. Specifically, a first yoke slot b11 is formed on the U-shaped yoke b1, and a plate slot b21 is formed on the iron plate b2. Furthermore, a second yoke slot b12 and a third yoke slot b13 can be formed on the yoke, wherein the second yoke slot b12 is located at the position contacting the first non-magnetic region b31, and the third yoke slot b13 is located at the position contacting the second non-magnetic region b41.

[0149] Please see Figure 12a and Figure 12b , Figure 12a This is a cross-sectional view of the magnetic circuit of the electromagnetic drive mechanism in the embodiment of this application where the yoke does not have a slot. Figure 12b The magnetic circuit cross-sectional view of the electromagnetic drive mechanism with a slot in the yoke element in the embodiment of this application is shown.

[0150] like Figure 12a As shown, when the yoke does not have a slot, and the first moving iron core e3 is in contact with the left side of the yoke, a closed magnetic circuit is generated, passing sequentially through the first permanent magnet b3, the first moving iron core e3, the second permanent magnet b4, and the bent edge of the U-shaped yoke b1. This closed magnetic force provides the holding force. A closed magnetic circuit is also generated, passing sequentially through the first permanent magnet b3 and the first side of the U-shaped yoke b1 (with...). Figure 12a For reference, the first side is defined as the upper side of the yoke, the first permanent magnet b3, the third moving iron core e4, the second permanent magnet b4, and the second side of the U-shaped yoke b1 (with...). Figure 12aFor reference, the second side is defined as the lower side of the yoke, the second permanent magnet b4, and the second moving iron core e5 as a closed magnetic circuit. This closed magnetic circuit provides a force that is opposite to the holding force, thus reducing the magnitude of the holding force.

[0151] For example Figure 12b As shown, when the yoke has a first slot b11, a second slot b12, a third slot b13, and a slot b21, respectively, when the first moving iron core e3 is in contact with the left side of the yoke, a first set of closed magnetic circuits is generated, passing sequentially through the first permanent magnet b3, the first moving iron core e3, the bent edge of the U-shaped yoke b1, and the first side; a second set of closed magnetic circuits is also generated, passing sequentially through the second permanent magnet b4, the second side and the bent edge of the U-shaped yoke b1, and the first moving iron core e3; and a third set of closed magnetic circuits is generated, passing sequentially through the first permanent magnet b3, the third moving iron core e4, the second permanent magnet b4, the second side and the bent edge of the U-shaped yoke b1, the first moving iron core e3, the bent edge of the U-shaped yoke b1, and the first side. These three sets of closed magnetic circuits provide holding force. Compared to the scheme where the yoke has no slots, the scheme where the yoke has slots has more magnetic lines of force, resulting in a greater holding force.

[0152] Understandably, in practical applications, the length of the slot can be designed to change the holding force based on the performance requirements of the relay when performing the switching function. For example, when the first moving iron core e3 is in contact with the U-shaped yoke b1, increasing the length of the first slot b11 of the yoke increases the magnetic resistance of the yoke, forcing the magnetic flux to move from the first slot b11 towards the first moving iron core e3, effectively increasing the magnetic flux passing through the first moving iron core e3; and with the increase in magnetic flux passing through the first moving iron core e3, the holding force also increases. When the second moving iron core e5 is in contact with the iron plate b2, increasing the length of the slot b21 of the iron plate increases the magnetic resistance of the iron plate b2, forcing the magnetic flux to move from the slot b21 towards the second moving iron core e5, effectively increasing the magnetic flux passing through the second moving iron core e5; and with the increase in magnetic flux passing through the second moving iron core e5, the holding force also increases. Furthermore, the widths of the first non-magnetic region b31 and the second non-magnetic region b41 can be adjusted. When the width decreases, the magnetic flux cross-sectional area of ​​the permanent magnet increases, the permanent magnet magnetomotive force increases, the magnetic flux increases, and the holding force increases accordingly. When the width increases, the holding force decreases. It should be noted that in practical applications, the openings on the yoke and the iron plate can include multiple sub-slots, as long as the multiple slots are aligned in a straight line; the number of sub-slots is not limited.

[0153] In one possible implementation, please refer to Figure 13 and Figure 14 , Figure 13 This is a schematic diagram of the coil frame e1 and coil assembly of the drive assembly of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 14This is a schematic diagram of the drive assembly of the electromagnetic drive mechanism provided in an embodiment of this application.

[0154] The drive assembly also includes an insulating frame, within which the coil e2 is wound in the coil frame e1 and then positioned. To ensure insulation between the coil and the iron core, the first moving iron core e3 and the second moving iron core e5 can be positioned outside the insulating frame.

[0155] The drive assembly may also include a third moving iron core e4. The third moving iron core e4 is disposed within the coil e2.

[0156] In this embodiment, the insulating frame can be obtained by placing the coil frame e1, coil e2, first moving iron core e3, second moving iron core e5 and third moving iron core e4 into the injection molding cavity for injection molding, thereby completing the assembly of the drive assembly.

[0157] The insulating support component serves to eliminate creepage paths between coil e2 and other metal parts in the magnetic circuit, ensure safe insulation between coil e2 and the iron core, achieve safe isolation between the coil and the metal parts of the magnetic circuit, and increase the insulation distance between the magnetic mechanism circuit and the main contact circuit.

[0158] Furthermore, in addition to the insulating frame, the drive assembly may also include a guide shaft e65, a limiting rib e61, and a limiting plate e66.

[0159] The guide shaft e65 is connected to the insulating frame in the second direction. It can be located at one end of the insulating frame or at both ends. The guide shaft e65 can be integrally formed with the insulating frame or it can be designed separately, i.e., the guide shaft e65 is an independent component and is mounted on the insulating frame. The guide shaft e65 is located on the outside of the first moving iron core e3 and / or the second moving iron core e4 relative to the coil e3. At the same time, the yoke has a guide hole for the guide shaft to pass through and reciprocate. The guide shaft e65 and the guide hole are in sliding contact, realizing the limiting function of the drive assembly in the direction of movement.

[0160] The limiting plate e66 may include two, respectively disposed on the two end faces of the insulating frame; the position of the limiting plate e66 is parallel to the direction of movement and perpendicular to the first permanent magnet and the second permanent magnet; the drive assembly slides in contact with the end faces of the first permanent magnet and the second permanent magnet through the limiting plate e66, specifically by clamping the first permanent magnet and the second permanent magnet between the two limiting plates e66, thereby achieving redundant limiting of the degree of freedom of the drive assembly.

[0161] Furthermore, the guide shaft e65 and the limiting plate e66 can be used together to ensure that the drive assembly will not deflect, tilt, or generate fan-shaped air gaps in the magnetic circuit.

[0162] The limiting rib e61 is disposed on the insulating frame and located between the first permanent magnet and the second permanent magnet. The drive assembly slides in contact with the first permanent magnet and the second permanent magnet through the limiting rib.

[0163] Furthermore, a coil frame limiting rib e13 can also be provided on the coil frame e1. The limiting rib e61 on the insulating frame cooperates with the coil frame limiting rib e13 on the coil frame e1 to achieve sliding contact between the drive component and the permanent magnet, thereby reducing contact wear by reducing the contact surface between the drive component and the permanent magnet.

[0164] The insulating frame, guide shaft e65, limiting rib e61, and limiting plate e66 can be integrally formed by injection molding or assembled by splicing. Injection molding is preferred to reduce the assembly difficulty of the drive components.

[0165] The assembly of the driver components will be described in detail below. Please refer to [link / reference]. Figure 15 , Figure 15 This is an exploded view of the drive component of the electromagnetic drive mechanism provided in the embodiments of this application.

[0166] like Figure 15 As shown, firstly, the lead sheet e10 is inserted into the lead groove e11 of the coil frame e1. Then, according to the design requirements, the appropriate enameled wire specification is selected, the number of turns is determined, and winding is performed. The lead interface e101 and the bending part e102 of the lead sheet e10 are used to fix the beginning and end of the coil. The beginning and end of the coil need to be wrapped with molten solder to ensure reliable conductivity between the enameled wire and the lead sheet, or an argon arc welding process can be used to fuse the metal materials. The bending part e102 of the tinned lead sheet is bent inward so that it does not protrude above the edge of the coil frame to avoid affecting the fit between the injection molding and the external mechanism. After the coil is wound, the third moving iron core e4 is placed into the iron core fixing groove e12 of the coil frame e1, and injection molding is performed using a vertical injection molding machine. The plastic is injected into the cavity to mold the wound coil and iron core into one piece. The elongated slots e31 of the first moving iron core e3 and e51 of the second moving iron core e5 allow the plastic to flow out of the mold cavity during injection molding, thus fixing and constraining the first and second moving iron cores e3 and e5 respectively. This manufacturing method allows for a larger core size. The groove e41 of the third moving iron core e4 provides flow space for the plastic, allowing the plastic to solidify and restrict the vertical movement of the third moving iron core e4, making the fixing and constraint of the moving iron core more reliable. Through the above-described integrated coil core manufacturing method, multiple parts can be integrated into a single part, avoiding the risk of cumulative tolerances introduced by assembling multiple parts. At the same time, it reduces assembly steps and improves the efficiency of batch production.

[0167] In one possible implementation, please refer to Figure 16 , Figure 16 This is a top view of one of the limiting plates of the drive assembly of the electromagnetic drive mechanism provided in an embodiment of this application.

[0168] like Figure 16 As shown, in addition to ensuring safe insulation between the coil and the iron core, providing multi-degree-of-freedom limiting, and motion guidance, the insulating frame can also accommodate a wiring device for the coil leads. Specifically, the insulating frame has two sets of wiring devices, each including a wiring groove and a lead interface e101. When a limit plate is provided, the wiring device can be specifically installed on one of the limit plates.

[0169] The wiring channel can be a U-shaped wiring channel e62. The two leads of the coil are led out through the lead interfaces e101 of the two sets of wiring devices and then fixed in the wiring channel.

[0170] Furthermore, the wiring device also includes a wire clamp e63, which limits the coil lead after it is led out from the U-shaped wiring channel e62.

[0171] Further, it may include an isolation boss e64 for the conductors, which is disposed on the insulating frame and also on the limiting plate when the wiring device is disposed on the limiting plate. The isolation boss e64 is disposed between two wire clamps e63, and the two leads are respectively disposed on both sides of the isolation boss e64. Please also refer to Figure 17 , Figure 17 This is a wiring diagram of the electromagnetic drive mechanism provided in an embodiment of this application. The drive assembly, through the wiring device on the insulating frame and the lead hook d16 of the relay base, constitutes a highly reliable positioning and guiding scheme for the moving conductor.

[0172] The U-shaped wiring groove e62 and the wire clamp e63 of the wiring device are mainly used to fix the coil lead e21 and limit the range of motion of the coil lead e21, so that when the moving component moves in a straight line, the coil lead e21 does not generate tension on the solder joint of the coil output end, thus improving the long-term operational reliability. The specific fixing method is as follows: the coil lead e21 is soldered to the lead interface e101, then the lead is pressed into the U-shaped wiring groove e62, and glue is applied at this point to fix it, limiting the transmission of tension between the wire and the solder joint. Then it passes through the wire clamp e63 and the lead hook d16 and is soldered to the coil pin d41. In order to ensure that no tension is generated at the fixing solder joints at both ends of the coil lead e21 when the coil moves, a certain amount of lead slack will be left between the U-shaped wiring groove e62 and the lead hook d16. At the same time, glue is also applied to the lead hook d16. The function of the wire isolation boss e64 is to isolate the motion friction between the positive and negative polarity coil leads e21, and prevent the wire insulation from being damaged due to long-term reciprocating linear motion and sliding friction contact between the leads.

[0173] The electromagnetic drive mechanism provided in this application reduces the magnetic flux attenuation caused by the intermediate annular magnetic field by incorporating a permanent magnet with a non-magnetic region, thereby improving magnetic field utilization. By adjusting the yoke, the opening of the iron plate, and the width of the non-magnetic region of the permanent magnet, the magnetomotive force of the parallel reluctance and dual holding force circuit can be synchronously adjusted, thus optimizing the holding force and electromagnetic drive output characteristics. By incorporating an insulating support on the drive mechanism, creepage paths between the coil and the magnetic circuit metal parts are eliminated, ensuring safe insulation between the coil and the iron core, achieving safe isolation between the coil and the magnetic circuit metal parts, and improving the insulation capability between the magnetic mechanism circuit and the contact main circuit. Simultaneously, the insulating support is equipped with a guide shaft, a limiting plate, and limiting ribs, effectively preventing the fan-shaped air gap caused by iron core deflection, avoiding wear from the permanent magnet, and reducing the attraction force on the moving iron core, thus improving the consistency of the static and dynamic output characteristics of the mechanism. This application further designs the insulating support component as an integrated injection-molded structure, used to integrate the various components of the drive assembly (including coils, coil frames, coil lead sheets, multiple moving iron cores, etc.) into a single injection-molded structure, thus integrating multiple parts into a single part and avoiding the introduction of assembly tolerances. Simultaneously, it reduces the number of assembly steps in the electromagnetic mechanism of existing moving coil magnetic latching relays, solving the problem of low assembly efficiency in this type of mechanism. This invention employs a multi-degree-of-freedom limiting design for the coil iron core assembly, avoiding the loss of electromagnetic driving force due to useless motion components of the moving parts, and improving the stability of the electromagnetic mechanism's long-stroke output. Furthermore, this application also designs a coil lead wiring device, which, through multi-degree-of-freedom limiting constraints on the leads, transforms the force on the coil lead solder joints into the force on the coil leads, improving the long-term reliability of the linear reciprocating motion of the drive assembly.

[0174] This application also provides an electromagnetic drive mechanism, which, compared to the above... Figures 4 to 11d In a corresponding embodiment, this application proposes a C-shaped yoke interlocking design in the permanent magnet magnetic circuit design section to address the issues of inconsistent holding forces on both sides and the sensitivity of the mechanism's characteristics to the air gap during magnetic circuit assembly. Please refer to... Figure 18 , Figure 19a and Figure 19b , Figure 18 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 19a and Figure 19b This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application.

[0175] In this embodiment, two C-shaped yokes are symmetrically assembled to form a cavity, and the drive assembly is disposed within the cavity. The first permanent magnet b3 and the second permanent magnet b4 are respectively disposed on the inner wall of the assembly surfaces of the two C-shaped yokes, that is, the central axis of the first non-magnetic region b33 and the second non-magnetic region b43 is on the same plane as the two assembly surfaces. Furthermore, the metal parts used in the magnetic circuit of the electromagnetic drive mechanism can be manufactured using metal powder injection molding technology (MIM).

[0176] Specifically, the electromagnetic drive mechanism provided in this application embodiment includes a first yoke b1, a second yoke b2, a first permanent magnet b3, and a second permanent magnet b4. The first permanent magnet b3, after being assembled with the first yoke b1 and the second yoke b2, forms an upper inner wall that is fitted together. The second permanent magnet b4, after being assembled with the first yoke b1 and the second yoke b2, forms a lower inner wall that is fitted together. The first permanent magnet b3 and the second permanent magnet b4 have the same characteristics. A non-magnetic region is provided at the middle position of the first permanent magnet b3 and the second permanent magnet b4. The assembly surface of the first yoke b1 and the second yoke b2, as well as the riveting position, are in the same vertical direction as the non-magnetic region of the first permanent magnet b3 and the second permanent magnet b4.

[0177] It is understood that the driving component in the embodiments of this application is related to... Figures 4 to 11d The implementation method is the same. The drive assembly includes parts such as coil frame e1, coil e2, first moving iron core e3, second moving iron core e5, and third moving iron core e4. The above parts are placed into the injection molding cavity to complete the manufacturing of the drive assembly. The drive assembly may also include features such as limiting ribs, guide shafts, limiting plates, and wiring devices. In this drive assembly, the coil holder e1 can be used to place the coil e2, while the limiting rib can resist the permanent magnet to provide motion guidance and avoid excessive friction between the moving parts and the permanent magnet; the first moving iron core e3, the second moving iron core e5, and the third moving iron core e4 can provide magnetic attraction to the drive mechanism in the closed or open position under the action of magnetic attraction, that is, the holding force of the drive mechanism; the U-shaped wiring groove and the wire clamp of the wiring device are used to fix and limit the lead wire of the coil e2, reducing the friction loss of the lead wire; the guide shaft cooperates with the first circular hole b11 and the second circular hole b21 on the first yoke b1 and the second yoke b2 respectively to limit and guide the reciprocating linear motion of the drive assembly.

[0178] The electromagnetic drive mechanism provided in this application embodiment uses two C-shaped yokes interlocking magnetically, with the non-magnetic area of ​​the permanent magnet overlapping the air gap in the yoke assembly. This ensures consistent magnetic characteristics on both sides. Employing a coil-driven actuation scheme, it achieves high-speed bidirectional operation capabilities unattainable by commonly used electromagnetic mechanisms, with identical bidirectional switching characteristics. Furthermore, the permanent magnet used in this electromagnetic drive mechanism is unmagnetized within a certain width region at the centerline. The yoke is symmetrical, and the interlocking riveting position of the yoke overlaps with this region of the permanent magnet, resolving the issue of unbalanced holding forces due to air gaps. Moreover, the parts used in this electromagnetic drive mechanism can be manufactured using metal powder injection molding, solving the problems of bending deformation of the C-shaped yoke and punching corner collapse affecting the balance of holding forces on both sides. This manufacturing process makes part consistency easier to control. Additionally, due to the symmetrical structural features, the yoke only requires one mold compared to previous structures, saving development costs.

[0179] This application also provides an electromagnetic drive mechanism, which employs a design using four monopole permanent magnets to generate a non-magnetic region. Please refer to [link to relevant documentation]. Figure 20 , Figure 21a , Figure 21b and Figure 22 , Figure 20 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 21a and Figure 21b This is an assembly diagram of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 22 This is a schematic diagram of the drive assembly of the electromagnetic drive mechanism provided in an embodiment of this application.

[0180] In this embodiment, the first, second, third, and fourth sub-permanent magnets of the first and second permanent magnets are all single-stage permanent magnets. The first and second sub-permanent magnets are spaced apart, and the space between the first and second sub-permanent magnets is a first non-magnetic region. The third and fourth sub-permanent magnets are spaced apart, and the space between the third and fourth sub-permanent magnets is a second non-magnetic region.

[0181] The magnetic circuit direction of the monopole permanent magnets corresponding to the first and second sub-permanent magnets is the first direction, and the magnetic circuit direction of the monopole permanent magnets corresponding to the third and fourth sub-permanent magnets is the opposite direction to the first direction.

[0182] It is understandable that permanent magnet components may have problems such as poor demagnetization or magnetization of non-magnetic areas by magnetic areas. These problems can be solved by setting the two sub-permanent magnet components of a single permanent magnet component as two separate single-stage permanent magnets.

[0183] Specifically, the electromagnetic drive mechanism provided in this application embodiment includes a yoke g1, an iron plate g2, a first set of single-stage permanent magnets g3, and a second set of single-stage permanent magnets g4. The first set of single-stage permanent magnets g3 and the second set of single-stage permanent magnets g4 are attached to the upper and lower inner walls of the yoke g1. The first set of single-stage permanent magnets g3 and the second set of single-stage permanent magnets g4 are respectively provided with a first non-magnetic region g33 and a second non-magnetic region g43 physically separated at their intermediate positions. The assembly surface and riveting position of the first yoke g1 and the second yoke g2 are in the same vertical direction as the positions of the first non-magnetic region g33 and the second non-magnetic region g43.

[0184] The drive assembly includes components such as a coil frame h1, a coil h2, a first moving iron core h3, a second moving iron core h4, and a third moving iron core h5. These components are placed into an injection molding cavity to complete the fabrication of the drive assembly. The drive assembly also includes features such as a limiting rib h6, a guide shaft h9, a limiting plate, and a wiring device. In this drive assembly, the coil holder h1 can be used to place the coil h2, while the limiting rib h6 can resist the permanent magnet to provide motion guidance and avoid excessive friction between the moving parts and the permanent magnet; the first moving iron core h3, the second moving iron core h4, and the third moving iron core h5 can provide magnetic attraction to the drive mechanism in the closed or open position under the action of magnetic attraction, that is, the holding force of the drive mechanism; the wire clamping groove h7 and the wire clamping buckle h8 of the wiring device are used to fix the lead wire of the coil h2 to prevent the lead wire from rubbing against other features; the cylindrical guide h9 cooperates with the features of the first yoke g1 and the first circular hole g11 and the second circular hole g21 on the iron plate g2 to limit and guide the reciprocating linear motion of the mechanism.

[0185] Please see Figure 23 , Figure 23 This is an exploded view of the electromagnetic drive mechanism provided in the embodiments of this application.

[0186] The assembly process of the electromagnetic drive mechanism provided in this application embodiment includes: firstly, inserting two single-stage permanent magnets from the first group of single-stage permanent magnets g3 and the second group of single-stage permanent magnets g4 near the yoke g1 using a tooling fixture, and then placing the drive assembly in; then inserting two single-stage permanent magnets from the first group of single-stage permanent magnets g3 and the second group of single-stage permanent magnets g4 near the iron plate g2 using a tooling fixture, and finally riveting the iron plate g2 and the yoke g1 to complete the assembly.

[0187] The electromagnetic drive mechanism provided in this application embodiment offers a solution that divides each of the upper and lower permanent magnets into four single-pole permanent magnets to establish a stable non-magnetic region of a certain width. This avoids the effects of poor demagnetization of permanent magnets or the magnetization of the non-magnetic region by the magnetic region, effectively ensuring the non-magnetic characteristics of the non-magnetic region and making the magnetic circuit of the electromagnetic mechanism more stable. Furthermore, the parts used in the electromagnetic drive mechanism provided in this application embodiment can all be manufactured using metal powder injection molding, solving the problems of bending deformation of the U-shaped yoke and the impact of punching corner collapse on the balance of the holding forces on both sides. This part manufacturing process makes it easier to control the consistency of parts. Also, due to the symmetrical structural features, compared to previous structures, the magnetic yoke only requires one mold to manufacture, saving development costs. This application embodiment, by replacing two permanent magnets with four single-pole permanent magnets, uses less material and has a lower cost compared to the other embodiments mentioned above.

[0188] This application also provides an electromagnetic drive mechanism. While the permanent magnet magnetic circuit section of the magnetic mechanism also employs a C-shaped magnetic yoke, a design scheme is proposed to generate a non-magnetic region using four unipolar permanent magnets. This not only solves the problems of inconsistent holding forces on both sides and the mechanism's sensitivity to air gaps in the magnetic circuit assembly, but also avoids the issues of poor demagnetization of permanent magnets or magnetization of the non-magnetic region from the magnetic region. Please refer to... Figure 24 , Figure 25a and Figure 25b , Figure 24 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 25a and Figure 25b This is an assembly diagram of the electromagnetic drive mechanism provided in an embodiment of this application.

[0189] As shown in the figure, the electromagnetic drive mechanism includes a first yoke i1, a second yoke i2, a first set of unipolar permanent magnets i3, and a second set of unipolar permanent magnets i4. The first group of unipolar permanent magnets i3 includes unipolar permanent magnets i31 and i32, which are attached to the upper inner wall formed after assembly with the first yoke i1 and the second yoke i2. The second group of unipolar permanent magnets i4 includes unipolar permanent magnets i41 and i42, which are attached to the lower inner wall formed after assembly with the first yoke i1 and the second yoke i2. The first group of unipolar permanent magnets i3 and the second group of unipolar permanent magnets i4 have the same characteristics. The first group of unipolar permanent magnets i3 and the second group of unipolar permanent magnets i4 are respectively provided with a first non-magnetic region i33 and a second non-magnetic region i43 physically separated at the middle position. The assembly surface i of the first yoke i1 and the second yoke i2 and the riveting position are in the same vertical direction as the positions of the first non-magnetic region i33 and the second non-magnetic region i43. Except for the part that maintains the magnetic circuit, the coil core assembly is the same as in Embodiment 2 of the invention. The drive assembly includes components such as a coil frame j1, a coil j2, a first moving iron core j3, a second moving iron core j4, a third moving iron core j5, a limiting rib j6, a U-shaped wiring groove j7, a wire clamp j8, and a guide shaft j9. In this drive assembly j, the coil frame j1 holds the coil j2, while the limiting rib j6 provides motion guidance against the permanent magnet, preventing excessive friction between the moving parts and the permanent magnet. The first moving iron core j3, the second moving iron core j4, and the third moving iron core j5 provide magnetic attraction to the drive mechanism in the closed or open position, i.e., holding force on the drive mechanism. The U-shaped wiring groove j7 and the wire clamp j8 are used to fix the leads of the coil j2, preventing friction between the leads and other features. The cylindrical guide j9 cooperates with the first circular hole i11 and the second circular hole i21 on the first yoke i1 and the second yoke i2 to limit and guide the reciprocating linear motion of the mechanism. By replacing the two permanent magnets at the top and bottom with four single-pole permanent magnets (i31, i32, i41, i42), and with two single-pole permanent magnets of different polarities on each side of the non-magnetic area, the assembly process can be made more convenient by first installing the single-pole permanent magnets on both sides (such as i31+i41 and i32+i42) onto the U-shaped interlocking magnetic mechanisms (i1 and i2) on both sides, and then assembling them onto the coil assembly.

[0190] In this embodiment, a bistable electromagnetic drive mechanism with consistent bilateral holding characteristics and a single magnetic cavity is designed. It employs a coil actuation scheme, possessing high-speed bidirectional actuation capabilities unattainable by commonly used electromagnetic mechanisms, with identical bidirectional switching characteristics. The electromagnetic mechanism uses four unipolar permanent magnets to create a non-magnetic zone of a certain width at the centerline of the magnetic circuit. This avoids the poor demagnetization effect of the permanent magnets or the magnetization of the non-magnetic zone from the magnetic zone, more effectively ensuring the non-magnetic characteristics of the non-magnetic zone and making the magnetic circuit of the electromagnetic mechanism more stable. Simultaneously, due to the symmetrical feature of the yoke, the yoke's snap-fit ​​joint overlaps with this area of ​​the permanent magnets, solving the problem of assembly air gaps affecting the balance of bilateral holding forces. All parts used in the electromagnetic drive mechanism are manufactured using metal powder injection molding, solving the problems of U-shaped yoke bending deformation and punching corner collapse affecting the balance of bilateral holding forces. This manufacturing process makes it easier to control the consistency of parts. Furthermore, due to the symmetrical structural features, compared to previous structures, the yoke and unipolar permanent magnets only require one mold for manufacturing, saving development costs. This application embodiment employs a C-shaped interlocking magnetic mechanism, which improves the consistency of the bilateral holding characteristics and bilateral switching action characteristics of the electromagnetic mechanism. At the same time, the upper and lower permanent magnets are each divided into four single-pole permanent magnets, which not only constructs a stable non-magnetic region with physical isolation characteristics, but also adjusts the assembly sequence. The two single-pole permanent magnets on one side are first installed on the U-shaped interlocking magnetic mechanism on one side, and then assembled on the coil assembly, which greatly reduces the assembly difficulty of the electromagnetic mechanism.

[0191] This application also provides an electromagnetic drive mechanism. In the permanent magnet magnetic circuit design, an L-shaped magnetic yoke interlocking design is proposed, ensuring that air gaps exist in both sides of the holding force magnetic circuit. This solves the problem of air gaps affecting the consistency of holding forces on both sides in Embodiment 1. Please refer to... Figure 26 , Figure 27 , Figure 28a , Figure 28b and Figure 28c , Figure 26 This is an assembly drawing of some parts of the electromagnetic drive mechanism provided in the embodiments of this application. Figure 27 This is an assembly diagram of the electromagnetic drive mechanism provided in the embodiments of this application. Figures 28a to 28c This is an assembly diagram of the yoke and the two-stage permanent magnet of the electromagnetic drive mechanism provided in the embodiments of this application.

[0192] In this embodiment, the yoke includes two L-shaped yokes; the two L-shaped yokes are centrally symmetrically assembled and form a cavity, in which the drive assembly is disposed.

[0193] Specifically, the electromagnetic drive mechanism provided in this application embodiment includes a first L-shaped yoke p1, a second L-shaped yoke p2, a first permanent magnet p3, and a second permanent magnet p4. The first permanent magnet p3 is attached to the inner wall of the first L-shaped yoke p1, and the second permanent magnet p3 is attached to the inner wall of the second L-shaped yoke p2. The first permanent magnet p3 and the second permanent magnet p4 have the same characteristics, and a first non-magnetic region p33 and a second non-magnetic region p43 are provided at the intermediate position between the first permanent magnet p3 and the second permanent magnet p4. Except for the part that maintains the magnetic circuit, the drive assembly is consistent with the drive assembly in the above embodiment, and will not be described again here.

[0194] The assembly process of the yoke and permanent magnet of the electromagnetic drive mechanism provided in this application embodiment will be described below: First, the first L-shaped yoke p1 is fitted with the first permanent magnet p3. The first permanent magnet p3 is attracted to the first L-shaped yoke p1 and pushed to its right-angled side. The first permanent magnet boss p31 is then locked in place with the right-angled side p13 of the first L-shaped yoke. The second L-shaped yoke p2 and the second permanent magnet p4 are fitted in the same way. After the yoke and permanent magnet are assembled, the first L-shaped yoke boss p11 is pushed into the rectangular positioning hole p22 of the second L-shaped yoke, and the second L-shaped yoke boss p21 is pushed into the rectangular positioning hole p12 of the first L-shaped yoke to achieve a fit. Finally, the first L-shaped yoke boss p11 and the second L-shaped yoke boss p21 are fixed by riveting. Because a riveting method is used, there is no need to use glue for bonding, thus avoiding the generation of harmful gases that may corrode the device.

[0195] The relays provided in the embodiments of this application will now be described. Please refer to [link / reference]. Figure 3a and Figure 29 , Figure 29 This is an exploded view of the relay provided in the embodiment of this application.

[0196] The relay provided in this application embodiment includes a base d, a push rod assembly c, and an electromagnetic drive mechanism b. The electromagnetic drive mechanism b is disposed in the base c; one end of the push rod assembly d is connected to the drive assembly e of the electromagnetic drive mechanism b; a stationary contact assembly d2 is disposed on the base, and a moving contact assembly is disposed on the push rod assembly; the stationary contact assembly and the moving contact assembly are correspondingly disposed.

[0197] The relay provided in this embodiment is configured with the aforementioned magnetic drive mechanism b, a moving contact assembly on the push rod assembly c, and a stationary contact assembly on the base d. The assembled stationary contact assembly and moving contact assembly are correspondingly positioned. The push rod assembly c is driven by the drive mechanism e, which further drives different moving contact assemblies to contact the corresponding stationary contact assemblies to complete the relay switching action.

[0198] This relay can connect and disconnect high-power alternating current (AC) and high-voltage direct current (HVDC), enabling rapid power switching and reducing power interruption time during the switching process. It features a clear physical break, offering higher safety compared to power electronic switches.

[0199] Please see Figure 30 , Figure 30 This is a schematic diagram of the moving contact assembly of the relay provided in this application embodiment. A tooling fixture is used to fix and compress the moving spring assembly c1 and the arched compression spring c2, pushing the entire assembly into the groove c3 of the push rod c5 to fix the moving contact assembly. A plastic baffle c4 isolates the moving springs between the two electrical circuits, ensuring reliable electrical clearance.

[0200] Please refer to the following: Figure 30 and Figure 31 , Figure 31 This is an exploded view of the push rod assembly of the relay provided in this application embodiment. The moving contact assembly includes a moving spring c11, a moving contact c12, and an arched compression spring c2. To ensure that the arched compression spring c2 can be compressed and deformed without interference, the contact point is welded onto the moving spring c11. During assembly, the arched compression spring c2 and the moving spring c11 are first fixed and compressed using a tooling fixture, so that the arched compression spring c3 exerts a certain pressure on the moving spring c11. Then, the fixture is used to push it in. During the pushing process, the boss c14 of the moving spring first abuts against the push rod groove c32 and slides inward. After reaching the designated position, the compression spring is released, and the moving spring groove c13 and the push rod boss c31 are fixed in a limited position. The compression spring groove c21 and the push rod boss c33 are also fixed in a limited position. At the same time, due to the rebound of the arched compression spring c2, the arched compression spring c2 and the moving spring c11 form an interactive force that abuts against both sides of the push rod groove, thus achieving a fixed assembly.

[0201] Please see Figures 32a to 32g , Figures 32a to 32gThis is a schematic diagram of the base of the relay provided in this application embodiment. The base includes a stationary contact d2, a stationary contact d3, a coil pin d4, an auxiliary contact d5, an auxiliary contact pin d6, an auxiliary spring d7, and a detachable arc-extinguishing grid d8. The stationary contact d2 is riveted to the stationary contact d3, and the back boss of the stationary contact is pushed inward along the first slot d11 on the base d1 to achieve assembly and fixation. The coil pin d4 is fixed in the second slot d12 on the base d1 by plugging it in. The auxiliary spring d7 is riveted to the auxiliary contact d5, and then the auxiliary spring is riveted to the auxiliary contact pin d6 and fixed in the slot d13 on the base by plugging it in. It also has a barb feature to prevent pin retraction. To enable the measurement of contact pressure using a force gauge during product performance testing, the arc-extinguishing grid d8 is detachable and is inserted into the slot d14 on the base d1 by interference fit to achieve the auxiliary arc-extinguishing function.

[0202] like Figure 29 As shown, the relay assembly includes a housing a, an electromagnetic mechanism b, a push rod assembly c, a base d, and a drive assembly e. The base d has a fixed base grid d15 and a removable grid d8. A lower permanent magnet f2 is installed at the bottom of the base to assist in arc extinguishing. Together with the upper permanent magnet f1 of the housing, they constitute the relay's arc extinguishing system for rapid arc extinguishing. The relay can be assembled as follows: first, insert the bottom-riveted stationary spring d2 into the base d1, then place the push rod assembly c, then insert the upper-riveted stationary spring d2, and then place the removable grid d8. Press the riveted electromagnetic mechanism b and drive assembly e into the magnetic circuit mounting position of the base d1. Then, press the coil pin d4 and auxiliary pin d6 into their corresponding slots. Place the upper arc-extinguishing permanent magnet f1 into the slot a1 of the housing, and place the lower arc-extinguishing permanent magnet f2 in the bottom slot d15 of the base. Finally, bake and seal the entire relay to complete the manufacturing process.

[0203] Furthermore, relays can be connected with Figure 16 The wiring device in the corresponding embodiment is used in conjunction with it. For example... Figure 17 As shown, the relay base is equipped with a lead hook d16 and a coil pin d41. The drive assembly, through the wiring device on the insulating frame, forms a highly reliable moving wire positioning and guiding scheme with the lead hook d16 of the relay base. For a detailed description, please refer to the section above. Figure 16 and Figure 17 The relevant descriptions will not be repeated here.

[0204] This application also provides a power distribution box in its embodiments. Please refer to [link / reference]. Figure 33 , Figure 33This is a schematic diagram of the power distribution box provided in an embodiment of this application, including a circuit board Y and the aforementioned relay Z, which are electrically connected. The power distribution box can connect two power sources and electrical equipment. By engaging or disengaging multiple moving contact assemblies (A and B) and stationary contact assembly C on the relay Z, switching between the two power sources and supplying power to the electrical equipment can be achieved. For example, the main power source connected to the relay Z can be alternating current (AC), and the backup power source can be a photovoltaic power source or a high-voltage direct current (HVDC) high-power power source. The relay Z can connect and disconnect multiple power sources, enabling rapid power switching and reducing power interruption time during the switching process. This power distribution box can be used for switching between single-phase dual power sources. In some embodiments, the power distribution box further includes a housing X, on which the circuit board Y is mounted. The circuit board Y may include a driver board and a power board. Connectors are provided on the circuit board Y. The connectors may include two input power connectors (A and B) and one output power connector C. The two input power connectors (A and B) are used to connect the main power source and the backup power source, respectively. Output power connector C is used to connect electrical equipment.

[0205] This application also provides a power distribution system, including electrical equipment and the aforementioned distribution box, wherein the electrical equipment and the distribution box are electrically connected. The electrical equipment can be network data centers, public cloud servers, switches, or other similar devices. This system enables rapid switching of backup power when the main power supply fails, thereby reducing system downtime, minimizing data loss, and preventing business disruptions.

[0206] For example, one side of relay Z in the distribution box is connected to the main power supply and the backup power supply, and the other side is connected to the electrical equipment. Automated control is achieved through a detection and control system, which quickly switches to backup power supply B when a main power failure is detected. The electrical equipment can also be equipped with a backup battery. When a main power failure is detected, the circuit between the backup battery and the electrical equipment is connected, allowing both the backup battery and the backup power supply to provide power simultaneously, improving the reliability of equipment operation. The backup battery can be a lead-acid battery or a lithium battery, etc.

[0207] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electromagnetic drive mechanism, characterized in that, Includes a yoke, a first permanent magnet, a second permanent magnet, and a drive assembly; The yoke includes two inner walls that are opposite each other along a first direction; The first permanent magnet component includes a first sub-permanent magnet component and a second sub-permanent magnet component; the first sub-permanent magnet component and the second sub-permanent magnet component are arranged along a second direction on an inner wall; the second direction intersects with the first direction; The second permanent magnet component includes a third sub-permanent magnet component and a fourth sub-permanent magnet component; the third sub-permanent magnet component and the fourth sub-permanent magnet component are arranged along the second direction on another inner wall; The magnetic poles of the first and third sub-permanent magnets are oriented in the first direction, while the magnetic poles of the second and fourth sub-permanent magnets are oriented in the opposite direction to the first direction. The drive assembly includes a coil, a coil frame, a first moving iron core, and a second moving iron core. The coil is wound on the coil frame; the coil plane is perpendicular to the first direction; the coil includes a first half-ring and a second half-ring connected to each other; the first half-ring is located between the first sub-permanent magnet and the third sub-permanent magnet, and the second half-ring is located between the second sub-permanent magnet and the fourth sub-permanent magnet. The first moving iron core is located on the side of the first half-ring that is away from the second half-ring; The second moving iron core is located on the side of the second half-ring opposite to the first half-ring; The drive assembly is movably mounted between the first permanent magnet and the second permanent magnet along the second direction, and has a first holding position and a second holding position; When the drive assembly is in the first holding position, the first moving iron core contacts the yoke; when the drive assembly is in the second holding position, the second moving iron core contacts the yoke. A first non-magnetic region is included between the first sub-permanent magnet component and the second sub-permanent magnet component; a second non-magnetic region is included between the third sub-permanent magnet component and the fourth sub-permanent magnet component; the magnetic induction intensity of the first non-magnetic region and the second non-magnetic region is lower than a preset value.

2. The electromagnetic drive mechanism according to claim 1, characterized in that, The first permanent magnet and the second permanent magnet are magnetized permanent magnets; The first non-magnetic region and the second non-magnetic region are not magnetized.

3. The electromagnetic drive mechanism according to claim 1, characterized in that, The first sub-permanent magnet component, the second sub-permanent magnet component, the third sub-permanent magnet component, and the fourth sub-permanent magnet component are each independent permanent magnets; The first sub-permanent magnet component and the second sub-permanent magnet component are arranged at intervals, and the interval between the first sub-permanent magnet component and the second sub-permanent magnet component is the first non-magnetic region; The third and fourth sub-permanent magnet components are spaced apart, and the space between the third and fourth sub-permanent magnet components is the second non-magnetic region.

4. The electromagnetic drive mechanism according to any one of claims 1 to 3, characterized in that, The yoke component includes a U-shaped yoke and an iron plate; The U-shaped yoke includes a first side, a bent side, and a second side, wherein the first side and the second side are parallel. The first permanent magnet is fitted to the inner wall of the first side, and the second permanent magnet is fitted to the inner wall of the second side. The first side and the second side are positioned and assembled with the iron plate to form a cavity, and the driving component is disposed in the cavity.

5. The electromagnetic drive mechanism according to any one of claims 1 to 3, characterized in that, The yoke includes two C-shaped yokes; The two C-shaped yokes are symmetrically assembled and form a cavity, and the drive assembly is disposed in the cavity; The first permanent magnet and the second permanent magnet are respectively disposed on the inner wall of the assembly surface between the two C-shaped yokes; The central axes of the first non-magnetic region and the second non-magnetic region are on the same plane as the two assembly surfaces.

6. The electromagnetic drive mechanism according to any one of claims 1 to 3, characterized in that, The yoke component includes two L-shaped yokes; The two L-shaped yokes are centrally symmetrically assembled and form a cavity, in which the drive assembly is disposed.

7. The electromagnetic drive mechanism according to any one of claims 1 to 6, characterized in that, The yoke is provided with a slot. The slot is formed on the contact surface that contacts the first moving iron core and the second moving iron core; The direction of the slot is perpendicular to the first direction.

8. The electromagnetic drive mechanism according to any one of claims 1 to 7, characterized in that, The first permanent magnet and the yoke iron are positioned and assembled through a compatible first splicing platform and a first splicing interface; And / or, the second permanent magnet and the yoke are positioned and assembled through a compatible second splicing platform and a second splicing interface.

9. The electromagnetic drive mechanism according to any one of claims 1 to 8, characterized in that, The drive assembly also includes a third moving iron core disposed on the coil frame; The third moving iron core is disposed inside the coil.

10. The electromagnetic drive mechanism according to any one of claims 1 to 9, characterized in that, The drive assembly also includes an insulating frame; The coil and the coil frame are disposed within the insulating frame; the first moving iron core and the second moving iron core are disposed outside the insulating frame.

11. The electromagnetic drive mechanism according to claim 10, characterized in that, The drive assembly also includes a guide shaft; The guide shaft is connected to the insulating frame along the second direction and is disposed on the outside of the first moving iron core and / or the second moving iron core away from the coil; The yoke has a guide hole for the guide shaft to pass through and reciprocate, and the guide shaft and the guide hole are in sliding contact.

12. The electromagnetic drive mechanism according to claim 10 or 11, characterized in that, Two sets of wiring devices are provided on the insulating frame. Each set of the wiring devices includes a wiring channel and a lead interface; The two leads of the coil are respectively led out through the lead interfaces of the two sets of wiring devices and then fixed in the wiring groove.

13. The electromagnetic drive mechanism according to claim 12, characterized in that, The wiring device also includes wire clamps; After the lead wire is led out from the wiring groove, it is limited by the wire clamp.

14. The electromagnetic drive mechanism according to claim 13, characterized in that, The insulating frame is also provided with isolation bosses; The isolation boss is disposed between the two wire clamps; The two leads are respectively disposed on both sides of the isolation boss.

15. A relay, characterized in that, Includes a base, a push rod assembly, and an electromagnetic drive mechanism as described in any one of claims 1 to 14; The electromagnetic drive mechanism is disposed in the base; One end of the push rod assembly is connected to the drive assembly of the electromagnetic drive mechanism; A stationary contact assembly is provided on the base, and a moving contact assembly is provided on the push rod assembly; The stationary contact assembly and the moving contact assembly are respectively provided.

16. The relay according to claim 15, characterized in that, The base is provided with lead hooks and coil pins; The lead wire of the driving component's coil is fixed by the lead wire hook and then connected to the coil pin.

17. A power distribution box, characterized in that, It includes a circuit board and a relay as described in claim 15 or 16, the relay being electrically connected to the circuit board.

18. A power distribution system, characterized in that, It includes electrical equipment and a distribution box as described in claim 17, wherein the electrical equipment and the distribution box are electrically connected.

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