A linear motion electromagnetic mechanism, a relay, a distribution box and a communication device

Abstract

The embodiment of the present application provides a linear motion electromagnetic mechanism, a relay, a distribution box and a communication device. In the linear motion electromagnetic mechanism, a first bipolar permanent magnet and a second bipolar permanent magnet are respectively arranged on two opposite inner walls of the frame-shaped part of the yoke, and a reverse first parallel magnetic field and a second parallel magnetic field are formed between the first bipolar permanent magnet and the second bipolar permanent magnet. Two half-ring parts of the energized coil will receive Ampere forces in the same direction, and the movable frame is driven to translate by the coil. The coil is energized bidirectionally to make the movable frame move bidirectionally, realizing the switching operation of the relay. The first moving iron core and the second moving iron core are used to form a holding force on the movable frame to limit the position of the movable frame when the movable frame is in the closing position or the opening position. This linear motion electromagnetic mechanism provides a bipolar magnetic field by one magnetic cavity, and the energized coil is driven by the Ampere force in this bipolar magnetic field to drive the movable frame to translate, with fewer parts used and a smaller overall structure thickness.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of relay structures, and in particular, to a linear motion electromagnetic mechanism, a relay, a distribution box, and a communication device. Background Art

[0002] In related art, communication devices, such as internet data centers (IDCs), need to meet the power supply continuity to support the normal operation of the devices. Usually, a power supply architecture with a main power supply and a backup power supply is adopted. When the main power supply fails, the relay quickly switches to the backup power supply to restore normal power supply.

[0003] There are different solutions for traditional relays. The first solution is the clapper - type electromagnetic mechanism as shown in Figure 1 It includes a base, an iron core 12, a coil 13, an upper yoke 14, a lower yoke 15, an armature 16, and a slider 17. The iron core 12 passes through the coil 13. The upper yoke 14 and the lower yoke 15 are both L - shaped and are respectively arranged at both ends of the coil 13. The armature 16 is located between the upper yoke 14 and the lower yoke 15 and is rotatably arranged on the base. The slider 17 is slidably arranged along a straight line on the base. The armature 16 is connected with a push arm 161, and the push arm 161 cooperates with the slot of the slider 17. When the coil 13 is energized, a magnetic field is generated between the upper yoke 14 and the lower yoke 15, driving the armature 16 to swing. The push arm 161 drives the slider 17 to translate, thereby driving the moving contact 18 to translate, so that the moving contact 18 contacts or separates from the static contact 19. Due to the large number of parts and the layout relationship, the overall structure thickness T1 of this clapper - type electromagnetic mechanism is relatively large.

[0004] The second solution is the multi - magnetic - cavity electromagnetic mechanism as shown in Figure 2 It includes two or four magnetic field cavities 21, a transmission rod, a moving iron core 23, and a coil 24. Each magnetic field cavity 21 includes two main permanent magnets 211 distributed at intervals and two auxiliary permanent magnets 212 distributed at intervals. The magnetization directions of the two main permanent magnets 211 are the same and are used to provide a magnetic field for the movement of the coil 24. The magnetization directions of the two auxiliary permanent magnets 212 are opposite and are used to provide a holding force. The magnetic field directions of the two main permanent magnets 211 in adjacent two magnetic field cavities 21 are opposite. A moving iron core 23 is slidably arranged in each magnetic field cavity 21, and all the moving iron cores 23 are connected to the transmission rod. The two half - ring parts of the coil 24 are respectively arranged in adjacent two magnetic field cavities 21 and are fixed on the moving iron cores 23 corresponding to the two magnetic field cavities 21. When the coil 24 is energized, the energized coil 24 moves under the Ampere force to drive the moving iron core 23 and the transmission rod to move. The transmission rod drives the moving contact to translate, so that the moving contact contacts or separates from the static contact. Due to the relatively large number of magnetic field cavities 21, the overall structure thickness T2 of this multi - magnetic - cavity electromagnetic mechanism is relatively large.

[0005] Traditional relays have the technical problem that their thickness dimensions are relatively large and it is difficult to further reduce the thickness. Summary of the Invention

[0006] An embodiment of the present application provides a linear motion electromagnetic mechanism, a relay, a distribution box and a communication device, which solves the technical problem that the thickness dimensions of traditional relays are relatively large.

[0007] The embodiment of the present application adopts the following technical solutions:

[0008] In a first aspect, the linear motion electromagnetic mechanism provided by the embodiment of the present application includes: a yoke, a first bipolar permanent magnet, a second bipolar permanent magnet and a driving component. The yoke has a frame portion. The first bipolar permanent magnet and the second bipolar permanent magnet are respectively attached to two opposite inner walls of the frame portion. The first bipolar permanent magnet has a first magnet portion and a second magnet portion that are connected and have opposite magnetic conduction directions. The second bipolar permanent magnet has a third magnet portion and a fourth magnet portion that are connected and have opposite magnetic conduction directions. The first magnet portion and the third magnet portion are spaced apart and have the same magnetic conduction direction. The second magnet portion and the fourth magnet portion are spaced apart and have the same magnetic conduction direction. The driving component includes a movable frame, a coil, a first movable iron core and a second movable iron core. The movable frame can move back and forth in the vertical direction of the interface between the first magnet portion and the second magnet portion to drive the movable contact assembly to move. The coil is arranged on the movable frame and includes a first half-ring portion and a second half-ring portion that are connected. The first half-ring portion is located between the first magnet portion and the third magnet portion, and the second half-ring portion is located between the second magnet portion and the fourth magnet portion. The first movable iron core and the second movable iron core are both arranged on the movable frame. The first movable iron core is located on one side of the first half-ring portion facing away from the second half-ring portion, and the second movable iron core is located on one side of the second half-ring portion facing away from the first half-ring portion.

[0009] The linear motion electromagnetic mechanism provided by the embodiment of the present application arranges the first bipolar permanent magnet and the second bipolar permanent magnet on two opposite inner walls of the frame portion of the yoke respectively, and forms a reverse first parallel magnetic field and a second parallel magnetic field between the first bipolar permanent magnet and the second bipolar permanent magnet. The first half-ring portion and the second half-ring portion of the coil are arranged in the first parallel magnetic field and the second parallel magnetic field respectively. The two half-ring portions of the energized coil will receive the same-direction Ampere force, and the movable frame is driven to translate by the coil. The coil is energized bidirectionally to make the movable frame move bidirectionally, realizing the switching operation of the relay. The first moving iron core and the second moving iron core are used to cooperate with the first bipolar permanent magnet and the second bipolar permanent magnet to form a closed magnetic force line when the movable frame is in the closing position or the opening position, forming a holding force on the movable frame to limit the position of the movable frame. Compared with the traditional relay, the linear motion electromagnetic mechanism of the present application provides a bipolar magnetic field by one magnetic cavity, and the energized coil is driven by the Ampere force in the bipolar magnetic field to drive the movable frame to translate. The linear motion electromagnetic mechanism has fewer parts, a smaller overall structure thickness, and a compact structure, solving the problem that it is difficult to reduce the volume due to a single magnetic cavity providing a single magnetic pole in the traditional multi-magnetic cavity electromagnetic mechanism.

[0010] In an optional implementation manner, both the first moving iron core and the second moving iron core are located inside the frame portion. The first moving iron core is located between the first magnet portion and the third magnet portion, and the second moving iron core is located between the second magnet portion and the fourth magnet portion.

[0011] In this solution, the first moving iron core and the second moving iron core are arranged inside the frame portion of the yoke and are respectively outside both sides of the coil. When the movable frame is in the closing position or the opening position, a certain magnetic force line will be formed between the first bipolar permanent magnet, the second bipolar permanent magnet, the yoke and the first moving iron core (the second moving iron core), thereby forming a holding force on the movable frame to limit the position of the movable frame.

[0012] In an optional implementation manner, the frame portion includes a first section, a second section, a third section and a fourth section connected in sequence. The first bipolar permanent magnet is attached to the inner wall of the fourth section, the second bipolar permanent magnet is attached to the inner wall of the second section, the first section is arranged opposite to the first moving iron core, and the third section is arranged opposite to the second moving iron core; the first section has a first opening corresponding to the first moving iron core, and the third section has a second opening corresponding to the second moving iron core.

[0013] In this solution, by respectively arranging openings at the positions of the frame portion of the yoke corresponding to the first moving iron core and the second moving iron core as magnetic isolation regions, more magnetic force lines pass through the first moving iron core (or the second moving iron core), forming a stronger holding force on the first moving iron core and the second moving iron core in the closing position or the opening position, and reducing the situation that the movable frame is disturbed and jitters.

[0014] In an alternative implementation, the driving component further includes a third moving iron core disposed on the movable frame. The third moving iron core is located inside the coil, and the opposite sides of the third moving iron core face the first bipolar permanent magnet and the second bipolar permanent magnet respectively.

[0015] In this solution, when the movable frame is in the closing position or the opening position, a closed magnetic circuit will be generated that sequentially passes through the first bipolar permanent magnet, the third moving iron core, the second bipolar permanent magnet, and the yoke, connecting the first bipolar permanent magnet and the second bipolar permanent magnet, and increasing the utilization rate of the magnetic field.

[0016] In an alternative implementation, the driving component includes a third moving iron core located inside the coil. The second section has a third opening corresponding to the interface between the third magnet portion and the fourth magnet portion, and the fourth section has a fourth opening corresponding to the interface between the first magnet portion and the second magnet portion.

[0017] In this solution, by providing an opening at the position of the frame portion of the yoke corresponding to the third moving iron core as a magnetic isolation region to change the direction of the magnetic lines of force, a stronger holding force for the third moving iron core is formed in the closing position or the opening position, reducing the situation where the movable frame shakes due to interference.

[0018] In an alternative implementation, the movable frame includes a coil frame, a first vehicle body, and a second vehicle body. The first vehicle body and the second vehicle body are respectively fixed at opposite ends of the coil frame. The coil is disposed on the coil frame. The first vehicle body is used to mount the first moving iron core and part of the moving contact assembly, and the second vehicle body is used to mount the second moving iron core and part of the moving contact assembly.

[0019] In this solution, the movable frame is configured in a manner of assembling multiple structural parts, which is easy to form and assemble. Part of the moving contact assemblies are respectively arranged on the first vehicle body and the second vehicle body, so that the static contact assemblies corresponding to different moving contact assemblies are arranged at a predetermined distance apart.

[0020] In an alternative implementation, the first vehicle body includes a first mounting arm and a first frame portion connected to the first mounting arm. The first mounting arm has a first mounting groove for mounting the moving contact. The first frame portion is fixed to the coil frame, and the first moving iron core is fixed on the first frame portion;

[0021] The second vehicle body includes a second mounting arm and a second frame portion connected to the second mounting arm. The second mounting arm has a second mounting groove for mounting the moving contact. The second frame portion is fixed to the coil frame, and the second moving iron core is fixed on the second frame portion.

[0022] In this solution, the vehicle body is configured as a mounting arm and a frame portion. The frame portion can be used to mount the moving iron core and has good structural strength. The vehicle body is reliably connected to the coil frame through the frame portion, and the moving contact assembly is mounted through the mounting arm. The structure is simple and easy to assemble.

[0023] In an alternative implementation, the yoke includes a U-shaped yoke iron and a top cover. Both ends of the top cover are respectively fixed to both ends of the U-shaped yoke iron. The first bipolar charged permanent magnet is attached to the inner wall of the top cover, and the second bipolar charged permanent magnet is attached to the inner wall of the U-shaped yoke iron.

[0024] In this solution, the yoke is used to confine the magnetic field lines within a predetermined area, playing a role in enhancing the magnetic field. The yoke is configured in an assembly manner of a U-shaped yoke iron and a top cover, which is easy to form and assemble.

[0025] In an alternative implementation, the U-shaped yoke iron and the top cover are positioned and assembled through a first boss and a first notch that are adapted to each other; and / or, the first bipolar charged permanent magnet and the top cover are positioned and assembled through a second boss and a second notch that are adapted to each other; and / or, the second bipolar charged permanent magnet and the U-shaped yoke iron are positioned and assembled through a third boss and a third notch that are adapted to each other.

[0026] In this solution, between two structural members, through a boss and a notch that are adapted to each other, the boss can extend into the notch, facilitating the quick positioning and assembly of the two structural members.

[0027] In some embodiments, multiple sets of the first bipolar charged permanent magnet and the second bipolar charged permanent magnet are provided, the number of coils is multiple, the multiple coils are connected in series, and the multiple coils are respectively distributed one by one between the multiple sets of the first bipolar charged permanent magnet and the second bipolar charged permanent magnet.

[0028] This solution enables the movable frame to have a greater output force by configuring multiple sets of bipolar charged permanent magnets and coils, so as to drive a larger load to move, that is, drive more moving contact assemblies to translate.

[0029] In an alternative implementation, both the first moving iron core and the second moving iron core are located outside the frame portion. The first moving iron core is located outside the same end of the first magnet portion and the third magnet portion, and the second moving iron core is located outside the same end of the second magnet portion and the fourth magnet portion; a first holding permanent magnet is provided on the first moving iron core, a second holding permanent magnet is provided on the second moving iron core, and the magnetic conduction directions of the first holding permanent magnet and the second holding permanent magnet are opposite.

[0030] In this solution, setting the first moving iron core and the second moving iron core outside the frame portion of the yoke facilitates structural assembly. The first moving iron core, the second moving iron core, the first holding permanent magnet, and the second holding permanent magnet provide a holding force for the relay.

[0031] In an alternative implementation, in order to provide a greater holding force to reliably position the movable frame, the drive assembly further includes a third moving iron core. The third moving iron core is provided on the movable frame, the third moving iron core is located within the coil, and opposite sides of the third moving iron core respectively face the first bipolar charged permanent magnet and the second bipolar charged permanent magnet.

[0032] In this solution, the third moving iron core connects the first bipolar permanent magnet charger and the second bipolar permanent magnet charger, increasing the utilization rate of the magnetic field. After configuring the third moving iron core, a larger holding force can be formed, which can more effectively reduce the jitter of the movable frame caused by interference, improve the operation reliability, and enable the movable contact assembly and the static contact assembly on the movable frame to be in reliable contact or separation.

[0033] In a second aspect, an embodiment of the present application provides a relay, including a base, one or more movable contact assemblies, one or more static contact assemblies, and the above-mentioned linear motion electromagnetic mechanism. One or more static contact assemblies are arranged on the base, one or more movable contact assemblies are arranged on the movable frame, and one or more movable contact assemblies and one or more static contact assemblies are arranged opposite to each other in a one-to-one correspondence.

[0034] The relay provided by the embodiment of the present application is configured with the above-mentioned linear motion electromagnetic mechanism. A bipolar magnetic field is provided by a magnetic cavity, and the energized coil is driven by the Ampere force in the bipolar magnetic field to drive the movable frame to translate, driving the movable contact assembly on the movable frame and the static contact assembly on the base to perform opening and closing actions. This linear motion electromagnetic mechanism is smaller in thickness and has a compact structure.

[0035] In an optional implementation manner, each movable contact assembly includes a bracket, two movable spring pieces, and multiple movable contacts. One movable spring piece is arranged on each of the opposite sides of the bracket, and one movable contact is arranged at each end of each movable spring piece.

[0036] The movable spring piece is made of an elastic material and has a certain elastic deformation ability. When the movable contact of the movable spring piece contacts the static contact assembly, the movable spring piece will elastically deform, reducing the occurrence of bounce and improving the working reliability.

[0037] In an optional implementation manner, each movable contact assembly further includes two elastic pieces. One elastic piece is arranged on each of the opposite sides of the bracket, and the two movable spring pieces are arranged on the sides of the two elastic pieces facing away from the bracket in a one-to-one correspondence.

[0038] By arranging elastic pieces between each movable spring piece and the bracket, the two movable spring pieces are spaced apart by a certain distance, and the elastic deformation ability shown by the movable spring pieces is also improved, further reducing the bounce of the movable spring pieces.

[0039] In an optional implementation manner, each static contact assembly includes four static contact pieces, four static contacts, and two arc extinguishing permanent magnets; the static contact pieces are arranged in pairs at intervals, each pair of static contact pieces is arranged corresponding to a movable spring piece, and the two movable spring pieces in the same movable contact assembly are located between two pairs of static contact pieces; a static contact is arranged on each static contact piece, and the static contacts and the movable contacts are matched in a one-to-one correspondence; in the arrangement direction of the two movable spring pieces, an arc extinguishing permanent magnet is arranged between every two adjacent static contact pieces.

[0040] The static contact assembly and the moving contact assembly are arranged correspondingly, and each moving reed of the moving contact assembly corresponds to two of the static contacts of the static contact assembly. When the two moving contacts on the moving reed are in contact with the static contacts on the two static contacts one by one, the circuit is turned on. When the two moving contacts are separated from the corresponding static contacts, the circuit is turned off. The arc extinguishing permanent magnet is used for quickly extinguishing the arc when the static contact assembly and the moving contact assembly are separated.

[0041] In a third aspect, an embodiment of the present application provides a distribution box, which includes a circuit board and the above-mentioned relay, and the relay is electrically connected to the circuit board. The distribution box can be connected to two power sources and electrical equipment, and by making the multiple moving contact assemblies and static contact assemblies on the relay contact or separate and cooperate, the switching of the two power sources can be realized and power can be supplied to the electrical equipment.

[0042] In a fourth aspect, an embodiment of the present application provides a communication device, which includes an electrical equipment and the above-mentioned distribution box, and the electrical equipment is electrically connected to the distribution box. It realizes the scenario of quickly switching the standby power source when the main power source loses power, thereby reducing the power-off time of the system, reducing data loss, and avoiding service loss. Description of the Drawings

[0043] Figure 1 is a schematic structural diagram of a traditional clapper electromagnetic mechanism;

[0044] Figure 2 is a schematic structural diagram of a traditional multi-magnetic cavity electromagnetic mechanism;

[0045] Figure 3 is a three-dimensional assembly drawing of the linear motion electromagnetic mechanism provided by the embodiment of the present application;

[0046] Figure 4 is a three-dimensional exploded view of the relay provided by the embodiment of the present application;

[0047] Figure 5 is Figure 4 the top view of the relay after removing the cover;

[0048] Figure 6 is Figure 3 the assembly schematic diagram of the yoke, the first bipolar charged permanent magnet and the second bipolar charged permanent magnet in the linear motion electromagnetic mechanism;

[0049] Figure 7 is Figure 3 the structural schematic diagram of the coil in the linear motion electromagnetic mechanism arranged between the first bipolar charged permanent magnet and the second bipolar charged permanent magnet;

[0050] Figure 8 is Figure 3 the three-dimensional assembly drawing of the driving component in the linear motion electromagnetic mechanism;

[0051] Figure 9 is Figure 8 the three-dimensional assembly drawing of the coil and the movable frame part structure in the driving component of

[0052] Figure 10 is Figure 3 the enlarged front view of the linear motion electromagnetic mechanism of

[0053] Figure 11 is Figure 3 the three-dimensional sectional view along the A-A line of the linear motion electromagnetic mechanism of after removing the moving contact component;

[0054] Figure 12 is Figure 3 the enlarged sectional view along the A-A line of

[0055] Figure 13 In , (a) and (b) are respectively the magnetic field simulation diagrams of the driving component when the third moving iron core is not configured and when the third moving iron core is configured;

[0056] Figure 14 In , (a) and (b) are respectively the magnetic field simulation diagrams of the driving component when the yoke is not provided with an opening and when the yoke is provided with an opening;

[0057] Figure 15 is Figure 3 the three-dimensional exploded view of the linear motion electromagnetic mechanism and the moving contact component of

[0058] Figure 16 is Figure 15 the three-dimensional exploded view of the linear motion electromagnetic mechanism of

[0059] Figure 17 is Figure 15 the enlarged top view of the linear motion electromagnetic mechanism of

[0060] Figure 18 is Figure 15 the three-dimensional exploded view of the movable frame in the linear motion electromagnetic mechanism of

[0061] Figure 19 is Figure 18 the three-dimensional exploded view of the movable frame, the first moving iron core, and the second moving iron core of

[0062] Figure 20 is Figure 6 the three-dimensional exploded view of the yoke, the first bipolar permanent magnet, and the second bipolar permanent magnet in the linear motion electromagnetic mechanism of

[0063] Figure 21 is Figure 6 the three-dimensional exploded view of the yoke in the linear motion electromagnetic mechanism of

[0064] Figure 22Exploded perspective view of the linear motion electromagnetic mechanism provided by another embodiment of the present application;

[0065] Figure 23 For Figure 22 Exploded perspective view of the yoke, first bipolar permanent magnet, and second bipolar permanent magnet in the linear motion electromagnetic mechanism;

[0066] Figure 24 For Figure 23 Assembled perspective view of the yoke, first bipolar permanent magnet, and second bipolar permanent magnet;

[0067] Figure 25 Partial structural schematic diagram of the linear motion electromagnetic mechanism provided by another embodiment of the present application;

[0068] Figure 26 For Figure 5 Structural schematic diagram of the relay after removing the linear motion electromagnetic mechanism;

[0069] Figure 27 For Figure 4 Exploded perspective view of the moving contact assembly in the relay;

[0070] Figure 28 For Figure 26 Assembly schematic diagram of the base and static contact assembly in the relay;

[0071] Figure 29 For Figure 26 Exploded perspective view of the relay;

[0072] Figure 30 For Figure 4 Structural schematic diagram of the cover in the relay;

[0073] Figure 31 Schematic diagram of the distribution box structure provided by the embodiment of the present application;

[0074] Figure 32 Electrical schematic diagram of the three-phase four-wire dual power supply switching distribution box provided by the embodiment of the present application;

[0075] Figure 33 Electrical schematic diagram of the communication device provided by the embodiment of the present application. Detailed implementation manners

[0076] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application. Although the description of this application will be introduced in combination with some embodiments, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the combination of embodiments is to cover other alternatives or modifications that may be extended based on the claims of this application. In order to provide a deep understanding of this application, many specific details will be included in the following description. This application can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of this application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0077] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0078] It should be understood that in the description of the embodiments of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. 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 orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0079] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] In the embodiments of the present application, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this text, the character " / " generally represents an "or" relationship between the associated objects before and after.

[0081] Describing a reference to "one embodiment" or "some embodiments" etc. in this specification means that in one or more embodiments of the present application, specific features, structures, or characteristics described in connection with that embodiment are included. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprise", "include", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in other ways.

[0082] Refer to Figures 3 to 5 , an electromagnetic linear motion mechanism 100 is provided in the embodiments of the present application, which can be applied to a relay 1000. The moving contact assembly 300 is installed on the electromagnetic linear motion mechanism 100, and the electromagnetic linear motion mechanism 100 drives the moving contact assembly 300 to move along a predetermined straight line, so that the moving contact assembly 300 contacts or separates from the fixed static contact assembly 400. The static contact assembly 400 is connected to different circuits. When one of the moving contact assembly 300 and the static contact assembly 400 is switched on, the switching between circuits can be achieved. One side of the relay 1000 is connected to the main power supply and the standby power supply, and the other side is connected to the electrical equipment, and the switching between the main power supply and the standby power supply can be realized.

[0083] Refer to Figure 3 , Figure 6 , Figure 7 , the electromagnetic linear motion mechanism 100 provided in the embodiments of the present application includes: a yoke 110, a first bipolar permanent magnet 120, a second bipolar permanent magnet 130, and a driving assembly 140. The yoke 110 has a frame portion 110a. The first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 are respectively attached to two opposite inner walls of the frame portion 110a. The first bipolar permanent magnet 120 has a first magnet portion 121 and a second magnet portion 122 that are connected and have opposite magnetic conduction directions. The second bipolar permanent magnet 130 has a third magnet portion 131 and a fourth magnet portion 132 that are connected and have opposite magnetic conduction directions. The first magnet portion 121 and the third magnet portion 131 are spaced apart and have the same magnetic conduction direction. The second magnet portion 122 and the fourth magnet portion 132 are spaced apart and have the same magnetic conduction direction. Combine Figure 8, the driving component 140 includes a movable frame 141, a coil 142, a first moving iron core 143 and a second moving iron core 144; the movable frame 141 can move back and forth in the vertical direction X of the interface between the first magnet part 121 and the second magnet part 122 to drive the moving contact component 300 to move. The coil 142 is arranged on the movable frame 141, combined with Figure 9 , the coil 142 includes a first half-ring part 1421 and a second half-ring part 1422 which are connected. The first half-ring part 1421 is located between the first magnet part 121 and the third magnet part 131, and the second half-ring part 1422 is located between the second magnet part 122 and the fourth magnet part 132. Both the first moving iron core 143 and the second moving iron core 144 are arranged on the movable frame 141. The first moving iron core 143 is located on the side of the first half-ring part 1421 facing away from the second half-ring part 1422, and the second moving iron core 144 is located on the side of the second half-ring part 1422 facing away from the first half-ring part 1421.

[0084] Among them, the first bipolar permanent magnet 120 (the second bipolar permanent magnet 130) can be an integral structure or an assembled structure. Each bipolar permanent magnet has two magnet parts, and the magnetic conduction directions of the two magnet parts are opposite. The bipolar permanent magnet can be a permanent magnet with opposite magnetic properties charged on both sides with the midline as the boundary.

[0085] Refer to Figure 7 , setting the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 at intervals can form adjacent first parallel magnetic fields 129 and second parallel magnetic fields 139 in the first direction X, and the magnetic field directions of the first parallel magnetic field 129 and the second parallel magnetic field 139 are opposite. This solution has a high space utilization rate and a compact structure. The first direction X is the vertical direction of the interface between the two magnet parts of the first bipolar permanent magnet 120 (or the second bipolar permanent magnet 130).

[0086] The coil 142 can be a square coil, a racetrack coil or other coils with similar shapes. The first half-ring part 1421 and the second half-ring part 1422 are names taken for convenience of description, and can be understood as two parts obtained by splitting the coil 142 along the axis of the coil 142. In fact, the first half-ring part 1421 and the second half-ring part 1422 are an integral structure.

[0087] Setting the first half-ring part 1421 and the second half-ring part 1422 of the coil 142 in the first parallel magnetic field 129 and the second parallel magnetic field 139 respectively, when the coil 142 is energized, the current directions of the first half-ring part 1421 and the second half-ring part 1422 are opposite (in Figure 7Among them, the current direction of the first half-ring part 1421 is inward, and the current direction of the second half-ring part 1422 is outward), and the directions of the Ampere forces received by the first half-ring part 1421 and the second half-ring part 1422 are the same (towards the left), driving the coil 142 to translate along one end in the first direction. When the coil 142 is energized in the reverse direction, the directions of the Ampere forces received by the first half-ring part 1421 and the second half-ring part 1422 are the same, driving the coil 142 to translate along the other end in the first direction. By energizing the coil 142 in the forward and reverse directions, the forward and reverse translations of the movable frame 141 are realized, combined with Figure 4 , Figure 5 , so as to drive the moving contact assembly 300 on the movable frame 141 to move, realizing the contact or separation between the moving contact assembly 300 and the static contact assembly 400.

[0088] Exemplarily, in the embodiment of Figure 7 , the upper side and the lower side of the first magnet part 121 in the first bipolar permanent magnet 120 are the S pole and the N pole respectively, and the upper side and the lower side of the second magnet part 122 are the N pole and the S pole respectively. The upper side and the lower side of the third magnet part 131 in the second bipolar permanent magnet 130 are the S pole and the N pole respectively, and the upper side and the lower side of the fourth magnet part 132 are the N pole and the S pole respectively. A downward first parallel magnetic field 129 is formed between the first magnet part 121 and the third magnet part 131. A downward second parallel magnetic field 139 is formed between the second magnet part 122 and the fourth magnet part 132.

[0089] It can be understood that different magnet parts in the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 can also adopt other magnetization methods, as long as the magnetic field directions of the first parallel magnetic field 129 and the second parallel magnetic field 139 distributed along the first direction X are opposite.

[0090] For the linear motion electromagnetic mechanism 100 provided by the embodiment of the present application, referring to Figure 6 , Figure 7 , the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 are respectively arranged on two opposite inner walls of the frame part 110a of the magnetic yoke 110, and a reverse first parallel magnetic field 129 and a second parallel magnetic field 139 are formed between the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130. The first half-ring part 1421 and the second half-ring part 1422 of the coil 142 are respectively arranged in the first parallel magnetic field 129 and the second parallel magnetic field 139. The two half-ring parts of the energized coil 142 will receive the Ampere forces in the same direction, and the coil 142 drives the movable frame 141 to translate. The coil 142 is energized bidirectionally to make the movable frame 141 move bidirectionally, realizing the switching operation of the relay 1000. Combined with Figure 8, the first moving iron core 143 and the second moving iron core 144 are used to cooperate with the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 to form a closed magnetic line of force when the movable frame 141 is in the closing position or the opening position, so as to form a holding force on the movable frame 141 to limit the position of the movable frame 141. Compared with traditional relays, the linear motion electromagnetic mechanism 100 of the present application provides a bipolar magnetic field by one magnetic cavity, and the energized coil 142 is driven by the Ampere force in the bipolar magnetic field to drive the movable frame 141 to translate. The linear motion electromagnetic mechanism 100 has fewer parts, a smaller overall structural thickness, and a compact structure, solving the problem that it is difficult to reduce the volume due to a single magnetic cavity providing a single magnetic pole in traditional multi-magnetic cavity electromagnetic mechanisms.

[0091] Exemplarily, at the same process level, the thickness of a relay with a traditional multi-magnetic cavity electromagnetic mechanism is about 30 mm, and a 1U power distribution box needs to be configured, while a 0.5U power distribution box cannot be used. Figure 4 , for the relay 1000 with the linear motion electromagnetic mechanism 100 of the embodiment of the present application, the thickness T0 of the relay 1000 can be made about 13.5 mm, which is about 55% smaller than the thickness dimension of the above traditional relay, and can be assembled in a 0.5U power distribution box. Among them, U is a unit representing the external dimensions of a server, which is an abbreviation of unit, and the specific dimensions are determined by the Electronic Industries Association of the United States. The thickness is based on 4.445 cm as the basic unit, and 1U is 4.445 cm.

[0092] In the traditional clapper-type electromagnetic mechanism as Figure 1 shown, the slider 17 is slidably arranged on the base along a straight line. When the coil 13 is energized, the push arm 161 on the armature 16 swings, and the slider 17 is driven to translate through the push arm 161, so as to drive the moving contact piece 18 to translate, so that the moving contact piece 18 contacts or separates from the static contact piece 19. The rotational motion of the push arm 161 is converted into a horizontal motion component and a vertical motion component, and only the horizontal motion component acts on the movement of the slider 17, the conversion efficiency of the effective motion distance is low, there is a large energy consumption loss, the starting speed of the slider 17 is slow, the excitation time of the coil 13 is long, and it is difficult to achieve high-speed switching. Moreover, the wire diameter of the coil 13 is too thin and the number of turns of the coil 13 is too many, resulting in too large internal inductance and resistance of the coil 13. When driven by capacitor discharge, the current rise rate of the coil 13 is low, which is not conducive to achieving high-speed switching of the relay.

[0093] At the same process level, compared with traditional relays, the linear motion electromagnetic mechanism 100 of the embodiment of the present application, refer to Figure 7, a first parallel magnetic field 129 and a second parallel magnetic field 139 are formed between the first bipolar charged permanent magnet 120 and the second bipolar charged permanent magnet 130 which are distributed at intervals. The two parallel magnetic fields have a relatively large magnetic induction intensity, and the number of turns of the coil 142 can be set to be relatively small. The energized coil 142 is subjected to a relatively large Ampere force in the magnetic field, and the excitation time is relatively short. During the full movement stroke of the coil 142, the main movement air gap remains unchanged, which can provide a stable electromagnetic output, has a long movement stroke, has an output curve similar to that of a repulsive mechanism, has a stable output, and a relatively fast moving speed. The relay 1000 having the linear motion electromagnetic mechanism 100 has a relatively short switching time and can achieve fast mechanical switching in milliseconds (such as 3 ms to 4 ms) to realize an ultra-thin liquid-cooled heat dissipation power supply. Among them, the switching time refers to the time from when the linear motion electromagnetic mechanism 100 starts to obtain an electrical signal to when the bounce of the B path terminates and is completely closed when the relay 1000 moves from path A to path B.

[0094] When setting the bipolar charged permanent magnet, refer to Figure 6 , Figure 7 , both the first bipolar charged permanent magnet 120 and the second bipolar charged permanent magnet 130 are plate-shaped. The first bipolar charged permanent magnet 120 and the second bipolar charged permanent magnet 130 are arranged at intervals and are attached to two opposite inner walls of the frame portion 110a of the yoke 110, so that the overall structure has a relatively small thickness dimension and the structure is in contact.

[0095] The first bipolar charged permanent magnet 120 and the second bipolar charged permanent magnet 130 can be set to be of equal length, that is, the dimensions of both in the vertical direction X of the interface between the two magnet parts of any bipolar charged permanent magnet are equal. The interface between the first magnet part 121 and the second magnet part 122 in the first bipolar charged permanent magnet 120, the interface between the third magnet part 131 and the fourth magnet part 132 in the second bipolar charged permanent magnet 130, and the symmetry plane of the frame portion 110a are coplanar, and a first parallel magnetic field 129 and a second parallel magnetic field 139 with a nearly equal spatial size are formed in the first direction X.

[0096] In some embodiments, refer to Figures 10 to 12 , both the first moving iron core 143 and the second moving iron core 144 are located within the frame portion 110a. The first moving iron core 143 is located between the first magnet part 121 and the third magnet part 131, and the second moving iron core 144 is located between the second magnet part 122 and the fourth magnet part 132. The opposite sides of the first moving iron core 143 face the first magnet part 121 and the third magnet part 131 respectively, and the opposite sides of the second moving iron core 144 face the second magnet part 122 and the fourth magnet part 132 respectively.

[0097] In this solution, the first moving iron core 143 and the second moving iron core 144 are arranged inside the frame portion 110a of the yoke 110 and are respectively outside both sides of the coil 142. When the movable frame 141 is in the closing position or the opening position, certain magnetic force lines will be formed between the first bipolar permanent magnet 120, the second bipolar permanent magnet 130, the yoke 110 and the first moving iron core 143 (the second moving iron core 144), thereby forming a holding force on the movable frame 141, limiting the position of the movable frame 141, reducing the situation where the movable frame 141 shakes due to interference, and further enabling the moving contact assembly 300 and the static contact assembly 400 on the movable frame 141 to be in reliable contact or separation.

[0098] In some embodiments, referring to Figure 6 , Figure 12 , in order to adjust the holding force when the movable frame 141 is in the closing position or the opening position, the frame portion 110a includes a first section 111, a second section 112, a third section 113 and a fourth section 114 that are sequentially connected. The first bipolar permanent magnet 120 is attached to the inner wall of the fourth section 114, the second bipolar permanent magnet 130 is attached to the inner wall of the second section 112, the first section 111 is disposed opposite to the first moving iron core 143, and the third section 113 is disposed opposite to the second moving iron core 144; the first section 111 has a first opening 1111 corresponding to the first moving iron core 143, and the third section 113 has a second opening 1131 corresponding to the second moving iron core 144.

[0099] In this solution, by respectively providing openings at the positions of the frame portion 110a of the yoke 110 corresponding to the first moving iron core 143 and the second moving iron core 144 as magnetic isolation regions, by changing the parallel magnetic resistance of the yoke 110 and the first moving iron core 143 (or the second moving iron core 144) at a predetermined position, more magnetic force lines pass through the first moving iron core 143 (or the second moving iron core 144) instead of directly passing through the first section 111 or the third section 113, thereby forming a stronger holding force on the first moving iron core 143 and the second moving iron core 144 in the closing position or the opening position, and reducing the situation where the movable frame 141 shakes due to interference. For example, when the first moving iron core 143 is attached to the yoke 110, by increasing the length of the first opening 1111, the magnetic resistance of the first section 111 of the yoke 110 can be increased, and the magnetic force lines will move from the first opening 1111 to the first moving iron core 143, which is equivalent to increasing the magnetic force lines passing through the first moving iron core 143, thereby increasing the holding force.

[0100] When the yoke 110 includes a connected U-shaped yoke iron 115 and a top cover 116, the sequentially connected first section 111, second section 112 and third section 113 are the U-shaped yoke iron 115, and the fourth section 114 is the top cover 116. Providing openings on two opposite arms of the U-shaped yoke iron 115 facilitates more magnetic force lines to pass through the first moving iron core 143 or the second moving iron core 144 to form a stronger holding force.

[0101] Among them, the first opening 1111 may include a plurality of first sub-ports distributed in a straight line, and the second opening 1131 may include a plurality of second sub-ports distributed in a straight line. In this way, the magnetic resistance of the yoke 110 at a predetermined position can also be changed, so that more magnetic flux lines pass through the first moving iron core 143 or the second moving iron core 144. In addition, only one of the first opening 1111 and the second opening 1131 may be provided.

[0102] In some embodiments, referring to Figure 9 、 Figure 12 , in order to provide a greater holding force to reliably position the movable frame 141, the drive assembly 140 further includes a third moving iron core 147. The third moving iron core 147 is disposed on the movable frame 141. The third moving iron core 147 is located inside the coil 142. Opposite sides of the third moving iron core 147 face the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 respectively.

[0103] In this solution, the third moving iron core 147 is disposed inside the coil 142 and the third moving iron core 147 is fixed on the movable frame 141. When the movable frame 141 is in the closing position or the opening position, a closed magnetic circuit that sequentially passes through the first bipolar permanent magnet 120, the third moving iron core 147, the second bipolar permanent magnet 130, and the yoke 110 is generated, connecting the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130, and increasing the utilization rate of the magnetic field. After the first moving iron core 143 and the second moving iron core 144 are configured, a certain holding force can be formed on the movable frame 141. After the third moving iron core 147 is configured, a greater holding force can be formed, which can more effectively reduce the shaking of the movable frame 141 caused by interference, improve the operation reliability, and enable the movable contact assembly 300 and the static contact assembly 400 on the movable frame 141 to reliably contact or separate. The third moving iron core 147 can be installed in the slot 1412 of the movable frame 141.

[0104] Referring to Figure 13In (a) thereof, when the driving assembly 140 is not configured with a third moving iron core, and the first section 111 of the yoke 110 has a first opening 1111 and the third section 113 has a second opening 1131, when the first moving iron core 143 fits against the first section 111 of the yoke 110, a first set of closed magnetic circuits will be generated that sequentially pass through the first bipolar permanent magnet 120, the first moving iron core 143, the first section 111 and the fourth section 114 of the yoke 110. A second set of closed magnetic circuits will also be generated that sequentially pass through the second bipolar permanent magnet 130, the second section 112 and the first section 111 of the yoke 110, and the first moving iron core 143. The holding force is provided by these two sets of closed magnetic circuits. A set of closed magnetic circuits will also be generated that sequentially pass through the first bipolar permanent magnet 120, the fourth section 114 of the yoke 110, the third section 113 and the second section 112, the second bipolar permanent magnet 130, and the second moving iron core 144. This closed magnetic circuit provides a force acting in the opposite direction to the holding force, reducing the magnitude of the holding force.

[0105] Refer to Figure 13 In (b) thereof, after the third moving iron core 147 is configured, in addition to the first set of closed magnetic circuits and the second set of closed magnetic circuits generated above, a third set of closed magnetic circuits will be generated that sequentially pass through "the first bipolar permanent magnet 120, the third moving iron core 147, the second bipolar permanent magnet 130, the second section 112 and the first section 111 of the yoke 110, the first moving iron core 143, the first section 111 and the fourth section 114 of the yoke 110". The holding force is provided by these three sets of closed magnetic circuits. Compared with the solution without the third moving iron core 147 configured, in the solution with the third moving iron core 147 configured, there are more magnetic field lines and the formed holding force is larger. Under the same process, in the solution with the third moving iron core 147 configured, the magnitude of the holding force can be increased by 70%. It overcomes the problem that it is difficult to increase the holding force when the traditional electromagnetic mechanism is miniaturized.

[0106] It can be understood that compared with the solution without the third moving iron core configured, the solution with the third moving iron core 147 configured can also generate a greater holding force when the second moving iron core 144 fits against the third section 113 of the yoke 110.

[0107] In some embodiments, refer to Figure 12 , in order to further adjust the holding force when the movable frame 141 is in the closing position or the opening position, when the driving assembly 140 includes a third moving iron core 147 located inside the coil 142, the second section 112 has a third opening 1121 corresponding to the interface between the third magnet portion 131 and the fourth magnet portion 132, and the fourth section 114 has a fourth opening 1141 corresponding to the interface between the first magnet portion 121 and the second magnet portion 122.

[0108] In this solution, an opening is provided at the position of the frame portion 110a of the yoke 110 corresponding to the third moving iron core 147 as a magnetic isolation region. By changing the parallel magnetic resistance of the yoke 110 and the first bipolar permanent magnet 120 (or the second bipolar permanent magnet 130) at a predetermined position, the direction of the magnetic field lines is changed, and a stronger holding force on the third moving iron core 147 is formed at the closing position or the opening position, reducing the situation where the movable frame 141 is disturbed and vibrates.

[0109] Among them, the third opening 1121 may include a plurality of third sub-ports distributed in a straight line, and the fourth opening 1141 may include a plurality of fourth sub-ports distributed in a straight line. In this way, the magnetic resistance of the yoke 110 at a predetermined position can also be changed, and the direction of the magnetic field lines can be changed to increase the holding force. In addition, only one of the third opening 1121 and the fourth opening 1141 may be provided.

[0110] Refer to Figure 14 In (a) of, when the first moving iron core 143 is in contact with the first section 111 of the yoke 110 without the first opening, the second opening, the third opening, and the fourth opening being provided in the yoke 110, a set of closed magnetic circuits that sequentially pass through the first bipolar permanent magnet 120, the first moving iron core 143, the second bipolar permanent magnet 130, the second section 112 of the yoke 110, the first section 111, and the fourth section 114 of the yoke 110 will be generated. This set of closed magnetic circuits provides the holding force. There will also be generated a set of closed magnetic circuits that sequentially pass through the first bipolar permanent magnet 120, the fourth section 114 of the yoke 110, the first bipolar permanent magnet 120, the third moving iron core 147, the second bipolar permanent magnet 130, the third section 113 of the yoke 110, the second bipolar permanent magnet 130, and the second moving iron core 144. This set of closed magnetic circuits provides a force acting in the opposite direction to the holding force, reducing the magnitude of the holding force.

[0111] Refer to Figure 14In (b) of the figure, when the first moving iron core 143 abuts against the first section 111 of the yoke 110 with the first opening 1111, the second opening 1131, the third opening 1121, and the fourth opening 1141 provided on the yoke 110, a first set of closed magnetic circuits passing through the first bipolar permanent magnet 120, the first moving iron core 143, the first section 111 of the yoke 110, and the fourth section 114 will be generated, and a second set of closed magnetic circuits passing through the second bipolar permanent magnet 130, the second section 112 of the yoke 110, the first section 111, and the first moving iron core 143 will also be generated. A third set of closed magnetic circuits passing through the first bipolar permanent magnet 120, the third moving iron core 147, the second bipolar permanent magnet 130, the second section 112 of the yoke 110, the first section 111, the first moving iron core 143, the first section 111 of the yoke 110, and the fourth section 114 will also be generated, and the holding force is provided by these three sets of closed magnetic circuits. Compared with the solution where the yoke 110 is not provided with openings, in the solution where the yoke 110 is provided with openings, there are more magnetic lines of force and the formed holding force is larger.

[0112] It can be understood that compared with the solution where the yoke 110 is not provided with openings, when the second moving iron core 144 abuts against the third section 113 of the yoke 110, the solution where the yoke 110 is provided with openings can also generate a larger holding force.

[0113] In Figure 1 In the traditional clapper - type electromagnetic mechanism shown in the figure, the holding force provided in the open position or the closed position is small. At the current technological level, the contact holding force range is between 0.5 Newton (N) and 0.8 N, and it is difficult to provide a large holding force.

[0114] In Figure 2 In the traditional multi - magnetic - cavity electromagnetic mechanism shown in the figure, each magnetic field cavity 21 is configured with an auxiliary permanent magnet 212 to provide the holding force. Since the magnetization directions of some main permanent magnets 211 and auxiliary permanent magnets 212 are opposite, the overall structure is complex and the assembly difficulty is large. The strength of the permanent magnet is poor, and the relatively thin auxiliary permanent magnet 212 becomes the weak position of the overall mechanical strength, resulting in low reliability. If the auxiliary permanent magnet 212 is directly removed, the holding force requirement cannot be met, and retaining the auxiliary permanent magnet 212 is not conducive to the miniaturization of the overall structure.

[0115] In an embodiment of the present application, the thickness T0 of the relay 1000 having the linear motion electromagnetic mechanism 100 is made approximately 13.5 mm, and the thickness dimension is small. The solution of providing the first opening 1111, the second opening 1131, the third opening 1121, and the third opening 1121 on the yoke 110 and configuring the first moving iron core 143, the second moving iron core 144, and the third moving iron core 147 can provide a holding force of more than 40 Newton (N), and has a simple structure and high reliability.

[0116] When setting the movable frame 141, refer to Figure 9 , Figure 15 , Figure 16 , the movable frame 141 includes a coil bobbin 141a, a first vehicle body 141b, and a second vehicle body 141c. The first vehicle body 141b and the second vehicle body 141c are respectively fixed to opposite ends of the coil bobbin 141a. The coil 142 is disposed on the coil bobbin 141a. The first vehicle body 141b is used to mount the first moving iron core 143 and part of the moving contact assembly 300, and the second vehicle body 141c is used to mount the second moving iron core 144 and part of the moving contact assembly 300.

[0117] In this solution, the movable frame 141 is configured in a manner of assembling multiple structural parts, which is easy to form and assemble. The first vehicle body 141b and the second vehicle body 141c are respectively arranged at both ends of the coil bobbin 141a, which is convenient for the coil bobbin 141a to drive the first vehicle body 141b and the second vehicle body 141c to translate smoothly, and then enables the moving contact assembly 300 on the first vehicle body 141b or the second vehicle body 141c to translate reliably. The moving contact assemblies 300 are respectively arranged on the first vehicle body 141b and the second vehicle body 141c, so that the static contact assemblies 400 corresponding to different moving contact assemblies 300 are arranged at a predetermined distance interval, making the structure convenient for assembly and reliable in operation.

[0118] Exemplarily, the magnetic yoke 110 includes a U-shaped yoke iron 115 and a top cover 116. Refer to Figure 9 , the coil 142 can be first installed on the coil bobbin 141a. Combining Figure 16 , then the first vehicle body 141b and the second vehicle body 141c are installed at both ends of the coil bobbin 141a. Then the coil bobbin 141a is installed in the U-shaped yoke iron 115, and finally the top cover 116 is installed on the U-shaped yoke iron 115. The U-shaped yoke iron 115 and the top cover 116 enclose a frame portion 110a.

[0119] Exemplarily, refer to Figure 15 , the first vehicle body 141b and the second vehicle body 141c are respectively provided with two moving contact assemblies 300, cooperating with four static contact assemblies 400, which can realize the three-phase four-wire AC dual-power switching of a small relay and realize the switching of 4 normally open contacts and 4 normally closed contacts of the dual power supply. In other embodiments, the first vehicle body 141b and the second vehicle body 141c can be configured with other numbers of moving contact assemblies 300, cooperating with the corresponding static contact assemblies 400, which can realize other dual-power switching of a small relay.

[0120] When setting the first vehicle body 141b and the second vehicle body 141c, refer to Figure 16 , Figure 17, the first vehicle body 141b includes a first mounting arm 1413 and a first frame portion 1414 connected to the first mounting arm 1413. The first mounting arm 1413 has a first mounting groove 1413a for mounting a moving contact. The first frame portion 1414 is fixed to the bobbin 141a, and the first moving iron core 143 is fixed to the first frame portion 1414;

[0121] The second vehicle body 141c includes a second mounting arm 1415 and a second frame portion 1416 connected to the second mounting arm 1415. The second mounting arm 1415 has a second mounting groove 1415a for mounting a moving contact. The second frame portion is fixed to the bobbin 141a, and the second moving iron core 144 is fixed to the second frame portion 1416.

[0122] In this solution, the vehicle body is configured as a mounting arm and a frame portion. The frame portion can be used to mount the moving iron core and has good structural strength. The vehicle body is reliably connected to the bobbin 141a through the frame portion, and the moving contact assembly 300 is mounted through the mounting arm. The structure is simple and easy to assemble. Among them, the mounting arm can extend along the first direction X, and the structure is compact.

[0123] When assembling the bobbin 141a, the first vehicle body 141b and the second vehicle body 141c, refer to Figure 9 , Figure 16 , Figure 17 , Figure 18 , the bobbin 141a has a first positioning groove 1411. One end of the first frame portion 1414 is connected to the first mounting arm 1413. The side of the first frame portion 1414 facing away from the first mounting arm 1413 is inserted into the two first positioning grooves 1411. The first frame portion 1414 and the bobbin 141a can be connected by means of a buckle 141e, hot melting, bonding, etc. The assembly relationship between the second vehicle body 141c and the bobbin 141a is similar and will not be elaborated.

[0124] When assembling the vehicle body and the moving iron core, refer to Figure 19 , taking the assembly of the first frame portion 1414 and the first moving iron core 143 as an example, the first moving iron core 143 can be installed in the assembly groove 141f of the first frame portion 1414. The two ends of the first moving iron core 143 can be inserted into the two hole positions 141g of the first frame portion 1414. Combining Figure 17 , the first moving iron core 143 can be conveniently and reliably fixed to the first frame portion 1414. The assembly relationship between the second moving iron core 144 and the second moving iron core 144 is similar and will not be elaborated.

[0125] In some other embodiments, the first vehicle body 141b and the second vehicle body 141 can also be configured in other structures, as long as they can mount the moving contact assembly 300 and drive the moving contact assembly 300 to translate.

[0126] In some other embodiments, the bobbin 141a, the first vehicle body 141b, and the second vehicle body 141c in the movable frame 141 can also be integrally formed structures, which can also achieve the assembly of the coil 142 and multiple moving iron cores, and meet the requirement that the energized coil 142 drives the movable frame 141 to translate back and forth relative to the yoke 110.

[0127] When setting the yoke 110, refer to Figure 20 , Figure 21 , the yoke 110 includes a U-shaped yoke iron 115 and a top cover 116. The two ends of the top cover 116 are respectively fixed to the two ends of the U-shaped yoke iron 115. The first bipolar permanent magnet 120 is attached to the inner wall of the top cover 116, and the second bipolar permanent magnet 130 is attached to the inner wall of the U-shaped yoke iron 115.

[0128] In this solution, the yoke 110 is used to enclose the magnetic field lines within a predetermined area, playing a role in enhancing the magnetic field. The yoke 110 is configured in the assembly manner of the U-shaped yoke iron 115 and the top cover 116, which is easy to form and assemble. Both the U-shaped yoke iron 115 and the top cover 116 can be made of metal plates.

[0129] When assembling the first bipolar permanent magnet 120, the second bipolar permanent magnet 130, and the yoke 110, refer to Figure 20 , the U-shaped yoke iron 115 and the top cover 116 are positioned and assembled through the mutually adapted first boss 1161 and first notch 1151; the first bipolar permanent magnet 120 and the top cover 116 are positioned and assembled through the mutually adapted second boss 1162 and second notch 123; the second bipolar permanent magnet 130 and the U-shaped yoke iron 115 are positioned and assembled through the mutually adapted third boss 1152 and third notch 133.

[0130] In this solution, between two structural parts through the mutually adapted boss and notch, the boss can extend into the notch, facilitating the quick positioning and assembly of the two structural parts. For example, the U-shaped yoke iron 115 and the top cover 116 are positioned and assembled through the mutually adapted first boss 1161 and first notch 1151. It can be that the U-shaped yoke iron 115 has the first notch 1151 and the top cover 116 has the first boss 1161, or it can be that the U-shaped yoke iron 115 has the first boss and the top cover 116 has the first notch. During assembly, align the first boss 1161 and set it in the first notch 1151, then the top cover 116 can be positioned on the U-shaped yoke iron 115, improving the assembly efficiency. Similarly, between the first bipolar permanent magnet 120 and the top cover 116, and between the second bipolar permanent magnet 130 and the U-shaped yoke iron 115, they can also be quickly positioned and assembled through the mutually adapted boss and notch.

[0131] The U-shaped yoke 115 and the top cover 116 can be connected by means such as laser welding. Between the first bipolar permanent magnet 120 and the top cover 116, and between the second bipolar permanent magnet 130 and the U-shaped yoke 115, they can be magnetically connected. There is no need to use glue for bonding and fixing, which reduces the generation of harmful gases that may corrode the device.

[0132] In some other embodiments, referring to Figures 22 to 24 , the magnetic yoke 110 includes a plurality of metal plate members 117, and the plurality of metal plate members 117 enclose a frame portion 110a. In this way, the magnetic field lines can also be enclosed within a predetermined area, playing a role in enhancing the magnetic field. The magnetic yoke 110 can be implemented in various ways. For example, four straight metal plate members are connected to form a frame portion, two L-shaped metal plate members are connected to form a frame portion, or one L-shaped metal plate member and two straight metal plate members are connected to form a frame portion. It can be understood that between the plurality of metal plate members 117, they can be positioned by matching bosses and notches, and connected by means such as laser welding.

[0133] In some embodiments, the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 are provided in multiple groups, the number of coils 142 is multiple, the multiple coils 142 are connected in series, and the multiple coils 142 are distributed one by one between multiple groups of the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130.

[0134] This solution configures multiple groups of bipolar permanent magnets and coils 142, so that the movable frame 141 has a greater output force to drive a larger load to move, that is, to drive more moving contact assemblies 300 to translate, making the linear motion electromagnetic mechanism 100 applicable to the switching of three-phase four-wire 380V AC dual power supplies or other multi-wire power supplies.

[0135] Exemplarily, the multiple first bipolar permanent magnets 120 are arranged in sequence along the first direction X, and the multiple second bipolar permanent magnets 130 are arranged in sequence along the first direction X. The multiple coils 142 are arranged in sequence along the first direction X and are correspondingly arranged with each group of the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130. The first direction X is the linear movement direction of the movable frame 141.

[0136] Exemplarily, the multiple first bipolar permanent magnets 120 are arranged in sequence along the second direction Y, and the multiple second bipolar permanent magnets 130 are arranged in sequence along the second direction Y. The multiple coils 142 are arranged in sequence along the second direction Y and are correspondingly arranged with each group of the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130. The second direction Y is perpendicular to the first direction X and the thickness direction of the relay respectively.

[0137] Exemplarily, multiple sets of first bipolar charged permanent magnets 120 and second bipolar charged permanent magnets 130 are distributed along the third direction Z, and a coil 142 is provided between each set of first bipolar charged permanent magnets 120 and second bipolar charged permanent magnets 130. The third direction Z is the thickness direction of the relay.

[0138] In some embodiments, referring to Figure 25 , both the first moving iron core 143 and the second moving iron core 144 are located outside the frame portion 110a. The first moving iron core 143 is located outside the same end of the first magnet portion 121 and the third magnet portion 131, and the second moving iron core 144 is located outside the same end of the second magnet portion 122 and the fourth magnet portion 132; a first holding permanent magnet 145 is provided on the first moving iron core 143, and a second holding permanent magnet 146 is provided on the second moving iron core 144. The magnetic conduction directions of the first holding permanent magnet 145 and the second holding permanent magnet 146 are opposite.

[0139] In this solution, the first moving iron core 143 and the second moving iron core 144 are arranged outside the frame portion 110a of the yoke 110, which is convenient for structural assembly. The first moving iron core 143, the second moving iron core 144, the first holding permanent magnet 145, and the second holding permanent magnet 146 provide a holding force for the relay 1000. The energized coil 142 can drive the first moving iron core 143, the second moving iron core 144, the first holding permanent magnet 145, and the second holding permanent magnet 146 to move back and forth relative to the yoke 110 along the first direction X.

[0140] When the yoke 110 includes a U-shaped yoke 115 and a top cover 116, the U-shaped yoke 115, the top cover 116, and the coil holder can be assembled first, and then the first moving iron core 143, the second moving iron core 144, the first vehicle body, and the second vehicle body can be assembled, solving the problem that the U-shaped yoke 115 and the top cover 116 need to be connected in the cavities of the first vehicle body and the second vehicle body, and simplifying the assembly.

[0141] Exemplarily, the first moving iron core 143 is generally arranged in a U shape, and the groove of the first moving iron core 143 faces the first section 111 of the yoke 110. The first holding permanent magnet 145 is arranged at the groove position to provide a holding force, compensating for the reduced holding force due to the external placement of the first moving iron core 143. The second moving iron core 144 is generally arranged in a U shape, and the groove of the second moving iron core 144 faces the third section 113 of the yoke 110. The second holding permanent magnet 146 is arranged at the groove position to provide a holding force, compensating for the reduced holding force due to the external placement of the second moving iron core 144.

[0142] In some embodiments, referring to Figure 25, in order to provide greater holding force to reliably position the movable frame, the drive assembly 140 further includes a third moving iron core 147. The third moving iron core 147 is disposed on the movable frame. The third moving iron core 147 is located within the coil 142. Opposite sides of the third moving iron core 147 face the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130 respectively.

[0143] In this solution, a third moving iron core 147 is disposed within the coil 142, and the third moving iron core 147 is fixed to the movable frame. The first moving iron core 143, the second moving iron core 144, the third moving iron core 147, the first holding permanent magnet 145, and the second holding permanent magnet 146 provide holding force for the relay 1000. The energized coil 142 can drive the first moving iron core 143, the second moving iron core 144, the third moving iron core 147, the first holding permanent magnet 145, and the second holding permanent magnet 146 to move back and forth relative to the yoke 110 along the first direction X. The third moving iron core 147 connects the first bipolar permanent magnet 120 and the second bipolar permanent magnet 130, increasing the utilization rate of the magnetic field. After configuring the first moving iron core 143 and the second moving iron core 144, a holding force can be formed on the movable frame. After configuring the third moving iron core 147, a greater holding force can be formed, which can more effectively reduce the jitter of the movable frame caused by interference, improve the operation reliability, and enable the movable contact assembly and the static contact assembly on the movable frame to reliably contact or separate. The third moving iron core 147 can be installed in the slot of the movable frame.

[0144] Refer to Figures 3 to 5 , an embodiment of the present application provides a relay 1000, including a base 200, one or more movable contact assemblies 300, one or more static contact assemblies 400, and the above-mentioned linear motion electromagnetic mechanism 100. One or more static contact assemblies 400 are disposed on the base 200. One or more movable contact assemblies 300 are disposed on the movable frame 141. One or more movable contact assemblies 300 and one or more static contact assemblies 400 are arranged in one-to-one correspondence and relatively.

[0145] The relay 1000 provided by the embodiment of the present application is configured with the above-mentioned linear motion electromagnetic mechanism 100. A bipolar magnetic field is provided by a magnetic cavity. The energized coil 142 is subjected to the Ampere force in the bipolar magnetic field to drive the movable frame 141 to translate, driving the movable contact assembly 300 on the movable frame 141 and the static contact assembly 400 on the base 200 to perform opening and closing actions. The linear motion electromagnetic mechanism 100 is smaller in thickness and has a compact structure.

[0146] The relay 1000 can be used in the switching scenarios of the main power supply and the backup power supply. For example, in the dual-way hybrid power supply scenarios of high-security communication devices such as network data centers, public cloud servers, and switches, it can realize the scenario of quickly switching the backup power supply when the main power supply loses power, thereby reducing the power-off time of the system, reducing data loss, and avoiding business losses. The relay 1000 can connect and disconnect high-power alternating current (AC) and high-voltage direct current (HVDC) power supplies, realize fast switching of electric energy, and reduce the power interruption time during the switching process. The relay 1000 has an obvious physical break, which is safer than a power electronic switch.

[0147] When setting the base 200, refer to Figure 26 , the base 200 has a receiving groove 201 for installing the linear motion electromagnetic mechanism 100. Refer to Figure 4 , the relay 1000 further includes a cover 500 installed on the base 200. The cover 500 can cover related devices such as the linear motion electromagnetic mechanism 100, the moving contact assembly 300, and the static contact assembly 400 to protect these devices.

[0148] When setting the moving contact assembly 300, refer to Figure 27 , each moving contact assembly 300 includes a bracket 310, two moving reed pieces 320, and multiple moving contacts 330. One moving reed piece 320 is provided on each of the opposite sides of the bracket 310, and one moving contact 330 is provided at each end of each moving reed piece 320. The moving reed piece 320 is made of an elastic material and has a certain elastic deformation ability. When the moving contact 330 of the moving reed piece 320 contacts the static contact assembly 400, the moving reed piece 320 will elastically deform, reducing the occurrence of bounce and improving the working reliability. The two moving reed pieces 320 in the moving contact assembly 300 are designed separately, and the gas insulation between them realizes a reliable electrical clearance.

[0149] When assembling the bracket 310 and the moving reed piece 320, the bracket 310 has a positioning rod 311, and the moving reed piece 320 has a shaped hole 321. The cross-sections of the positioning rod 311 and the shaped hole 321 are adapted to each other. When the positioning rod 311 passes through the shaped hole 321, it limits the circumferential position of the moving reed piece 320, so that the moving contact 330 on the moving reed piece 320 is kept in a predetermined position. Exemplarily, the shaped hole 321 is a waist-shaped hole, and the positioning rod 311 is set to a shape adapted to the waist-shaped hole. In addition, the shaped hole 321 and the positioning rod 311 can also be set to other adapted shapes.

[0150] In some embodiments, in order to achieve the low bounce effect of the moving contact assembly 300, each moving contact assembly 300 further includes two elastic pieces 340. One elastic piece 340 is provided on each of the opposite sides of the bracket 310, and two moving reed pieces 320 are correspondingly arranged on the side of the two elastic pieces 340 facing away from the bracket 310. By arranging the elastic pieces 340 between each moving reed piece 320 and the bracket 310, the two moving reed pieces 320 are spaced apart by a certain distance, which also improves the elastic deformation ability exhibited by the moving reed pieces 320 and further reduces the bounce of the moving reed pieces 320. Among them, the elastic piece 340 can be set as a bent structure. One end of the elastic piece 340 abuts against the bracket 310, and the other end abuts against the moving reed piece 320.

[0151] When assembling the bracket 310 and the elastic piece 340, similar to the assembly relationship between the bracket 310 and the moving reed piece 320, the positioning and assembly of the elastic piece 340 are realized through the positioning rod 311 of the bracket 310 and the shaped hole 341 of the elastic piece 340.

[0152] In addition, a gasket 350 can be provided on the side of each moving reed piece 320 facing away from the elastic piece 340. Figure 15 , which facilitates inserting the integral moving contact assembly 300 into the first mounting groove 1413a (or the second mounting groove 1415a of the second vehicle body 141c) of the first vehicle body 141b in the movable frame 141, with reliable connection and convenient assembly. Similarly, the positioning hole of the bracket 310 and the shaped hole 351 of the gasket 350 cooperate to assemble the gasket 350 on the moving reed piece 320.

[0153] When setting the static contact assembly 400, refer to Figure 28 、 Figure 29 , each static contact assembly 400 includes four static contact pieces 410, four static contact points 420 and two arc extinguishing permanent magnets 430; the static contact pieces 410 are arranged in pairs at intervals. Figure 3 , each pair of static contact pieces 410 is correspondingly arranged with a moving reed piece 320, and the two moving reed pieces 320 in the same moving contact assembly 300 are located between two pairs of static contact pieces 410; a static contact point 420 is provided on each static contact piece 410, and the static contact point 420 and the moving contact point 330 are correspondingly matched; in the arrangement direction (i.e., the first direction X) of the two moving reed pieces 320, an arc extinguishing permanent magnet 430 is provided between every two adjacent static contact pieces 410.

[0154] The static contact assembly 400 and the moving contact assembly 300 are arranged correspondingly. Each moving spring piece 320 of the moving contact assembly 300 corresponds to two of the static contact pieces 410 of the static contact assembly 400. When the two moving contact points 330 on the moving spring piece 320 are in one-to-one contact with the static contact points 420 on the two static contact pieces 410, the circuit is turned on. When the two moving contact points 330 are separated from the corresponding static contact points 420, the circuit is turned off. The static contact piece 410 can be made of a rigid material that is not easily deformed. The static contact point 420 can be riveted to the static contact piece 410. The arc extinguishing permanent magnet 430 is used for quickly extinguishing the arc when the static contact assembly 400 and the moving contact assembly 300 are separated.

[0155] Two adjacent static contact pieces 410 located at one end of the moving spring piece 320 can be of an integrally formed structure for connecting to an electrical device. The integrally formed static contact piece 410 is easy to form. Two adjacent static contact pieces 410 located at the other end of the moving spring piece 320 are respectively connected to the main power supply and the backup power supply.

[0156] In addition, a plurality of pins 440 are further arranged on the base 200 to facilitate the access of the power supply and the electrical device. The pins 440 can be made of a rigid material that is not easily deformed. A plurality of pins 440 are respectively arranged at opposite ends of the base 200, so that the structure of the relay is compact and the wiring is convenient. The pins 440 and the static contact pieces 410 can be connected through a wire 450. Exemplarily, the base 200 is configured with a total of 16 pins 440, including 12 power pins, 2 auxiliary contact pins, and 2 coil pins.

[0157] When assembling the static contact piece 410, the arc extinguishing permanent magnet 430, and the pins 440 on the base 200, corresponding notches can be arranged on the base 200 to achieve the plug-in assembly of different structures.

[0158] In some embodiments, referring to Figure 26 、 Figure 28 , a plurality of first plastic grid pieces 210 can be arranged on the base 200. A plurality of first plastic grid pieces 210 are arranged at intervals between every two adjacent static contact pieces 410 for quickly extinguishing the arc when the static contact assembly 400 and the moving contact assembly 300 are separated. Referring to Figure 30 , a plurality of second plastic grid pieces 510 can be arranged on the bottom surface of the cover body 500. A plurality of second plastic grid pieces 510 are arranged at intervals between every two adjacent static contact pieces 410 for quickly extinguishing the arc when the static contact assembly 400 and the moving contact assembly 300 are separated.

[0159] In some embodiments, referring to Figure 4 、 Figure 5 , the relay 1000 further includes a guide member 220 installed on the base 200, and the guide member 220 is used for guiding the movable frame 141 to move along a predetermined direction.

[0160] Exemplarily, the guide member 220 can be configured as a guide cover, which can be buckled on the upper side of the first vehicle body 141b (second vehicle body 141c) of the movable frame 141. The guide cover includes a transverse arm 221 and two vertical arms 222, and the two vertical arms 222 are respectively connected to both ends of the transverse arm 221. Combining Figure 8 , the upper sides of the first vehicle body 141b and the second vehicle body 141c are provided with limiting grooves 141d. The first vehicle body 141b (second vehicle body 141c) is slidably mounted on the base 200. The transverse arm 221 of the guide cover is buckled on the limiting groove 141d, and the two vertical arms 222 are arranged corresponding to the two opposite side walls of the vehicle body, and the two vertical arms 222 are connected to the base 200, thereby limiting the moving direction and moving range of the vehicle body.

[0161] Referring to Figure 31 , an embodiment of the present application provides a distribution box 2000, which includes a circuit board 2001 and the above-mentioned relay 1000, and the relay 1000 is electrically connected to the circuit board 2001.

[0162] The distribution box 2000 can be connected to two power sources and electrical equipment. By making the multiple moving contact assemblies 300 and static contact assemblies 400 on the relay 1000 contact or separate and cooperate, the switching of the two power sources can be realized and power can be supplied to the electrical equipment.

[0163] Exemplarily, the main power source connected to the relay 1000 can be alternating current (AC), and the connected backup power source can be a photovoltaic power source or a high voltage direct current (HVDC) high-power power source. The relay 1000 can realize the connection and disconnection of multiple power sources, realize the rapid switching of electric energy, and reduce the power interruption time during the switching process. The distribution box 2000 can be used for the switching of single-phase dual power sources, and can also be used for the switching of three-phase four-wire dual power sources as shown in Figure 32 , and can also be used for the high-power switching of other multi-wire dual power sources.

[0164] In some embodiments, referring to Figure 31 , the distribution box 2000 further includes a box body 2002, and the circuit board 2001 is installed in the box body 2002. The circuit board 2001 can include a drive board and a power board. Connectors are provided on the circuit board 2001. The connectors can include two input power connectors 2003 and an output power connector 2004. The two input power connectors 2003 are respectively used to connect the main power source and the backup power source. The output power connector 2004 is used to connect the electrical equipment.

[0165] Referring to Figure 33, an embodiment of the present application provides a communication device, including an electrical device 3000 and the above-mentioned power distribution box 2000, and the electrical device 3000 is electrically connected to the power distribution box 2000. Among them, the electrical device 3000 can be an electrical device 3000 such as a network data center, a public cloud server, and a switch. The scenario of quickly switching the standby power supply 4002 when the main power supply 4001 loses power is realized, so as to reduce the power-off time of the system, reduce data loss, and avoid service losses.

[0166] Exemplarily, one side of the relay 1000 in the power distribution box 2000 is connected to the main power supply 4001 and the standby power supply 4002, and the other side is connected to the electrical device 3000. Through the detection and control system 2100, automatic control is realized. When it is detected that the main power supply 4001 loses power, it is quickly switched to the standby power supply 4002 for power supply. The electrical device 3000 can also be configured with a standby battery 4003. When it is detected that the main power supply 4001 loses power, the circuit between the standby battery 4003 and the electrical device 3000 is turned on, and the standby battery 4003 and the standby power supply 4002 supply power simultaneously to improve the operation reliability of the device. The standby battery 4003 can be a lead-acid battery or a lithium battery, etc.

[0167] Finally, it should be noted that the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A linear motion electromagnetic mechanism, characterized in that, Comprising: A yoke, a first bipolar permanent magnet, a second bipolar permanent magnet, and a driving assembly; The yoke has a frame portion; The first bipolar permanent magnet and the second bipolar permanent magnet are respectively attached to two opposite inner walls of the frame portion. The first bipolar permanent magnet has a first magnet portion and a second magnet portion that are connected and have opposite magnetic conduction directions. The second bipolar permanent magnet has a third magnet portion and a fourth magnet portion that are connected and have opposite magnetic conduction directions. The first magnet portion and the third magnet portion are spaced apart and have the same magnetic conduction direction. The second magnet portion and the fourth magnet portion are spaced apart and have the same magnetic conduction direction; The driving assembly includes a movable frame, a coil, a first moving iron core, and a second moving iron core. The movable frame can move back and forth in the vertical direction of the interface between the first magnet portion and the second magnet portion to drive the movable contact assembly to move; The coil is disposed on the movable frame. The coil includes a first half-ring portion and a second half-ring portion that are connected. The first half-ring portion is located between the first magnet portion and the third magnet portion, and the second half-ring portion is located between the second magnet portion and the fourth magnet portion; The first moving iron core and the second moving iron core are both disposed on the movable frame. The first moving iron core is located on one side of the first half-ring portion facing away from the second half-ring portion, and the second moving iron core is located on one side of the second half-ring portion facing away from the first half-ring portion.

2. The linear motion electromagnetic mechanism according to claim 1, characterized in that, Both the first moving iron core and the second moving iron core are located within the frame portion. The first moving iron core is located between the first magnet portion and the third magnet portion, and the second moving iron core is located between the second magnet portion and the fourth magnet portion; Or, both the first moving iron core and the second moving iron core are located outside the frame portion. The first moving iron core is located outside the same end of the first magnet portion and the third magnet portion, and the second moving iron core is located outside the same end of the second magnet portion and the fourth magnet portion. A first holding permanent magnet is provided on the first moving iron core, and a second holding permanent magnet is provided on the second moving iron core. The first holding permanent magnet and the second holding permanent magnet have opposite magnetic conduction directions.

3. The linear motion electromagnetic mechanism according to claim 1, wherein The driving assembly further includes a third moving iron core. The third moving iron core is disposed on the movable frame. The third moving iron core is located within the coil, and opposite sides of the third moving iron core face the first bipolar permanent magnet and the second bipolar permanent magnet respectively.

4. The linear motion electromagnetic mechanism according to claim 1, characterized in that, The frame portion includes a first section, a second section, a third section, and a fourth section that are sequentially connected. The first bipolar permanent magnet is attached to the inner wall of the fourth section, and the second bipolar permanent magnet is attached to the inner wall of the second section. The first section is disposed opposite to the first moving iron core, and the third section is disposed opposite to the second moving iron core; The first section has a first opening corresponding to the first moving iron core, and the third section has a second opening corresponding to the second moving iron core.

5. The linear motion electromagnetic mechanism according to claim 4, characterized in that, The driving component includes a third moving iron core located within the coil. The second section has a third opening corresponding to the interface between the third magnet portion and the fourth magnet portion, and the fourth section has a fourth opening corresponding to the interface between the first magnet portion and the second magnet portion.

6. The linear motion electromagnetic mechanism according to any one of claims 1 to 5, characterized in that, The movable frame includes a coil holder, a first vehicle body, and a second vehicle body. The first vehicle body and the second vehicle body are respectively fixed to opposite ends of the coil holder. The coil is disposed on the coil holder. The first vehicle body is used to mount a first moving iron core and part of the moving contact assembly, and the second vehicle body is used to mount a second moving iron core and part of the moving contact assembly.

7. The linear motion electromagnetic mechanism according to claim 6, characterized in that, The first vehicle body includes a first mounting arm and a first frame portion connected to the first mounting arm. The first mounting arm has a first mounting groove for mounting a moving contact. The first frame portion is fixed to the coil holder, and the first moving iron core is fixed to the first frame portion. The second vehicle body includes a second mounting arm and a second frame portion connected to the second mounting arm. The second mounting arm has a second mounting groove for mounting a moving contact. The second frame portion is fixed to the coil holder, and the second moving iron core is fixed to the second frame portion.

8. The linear motion electromagnetic mechanism according to any one of claims 1 to 5, characterized in that, The yoke includes a U-shaped yoke iron and a top cover. Two ends of the top cover are respectively fixed to two ends of the U-shaped yoke iron. The first bipolar permanent magnet is in contact with the inner wall of the top cover, and the second bipolar permanent magnet is in contact with the inner wall of the U-shaped yoke iron.

9. The linear motion electromagnetic mechanism according to claim 8, wherein, The U-shaped yoke iron and the top cover are positioned and assembled through a first boss and a first notch that are adapted to each other. And / or, the first bipolar permanent magnet and the top cover are positioned and assembled through a second boss and a second notch that are adapted to each other. And / or, the second bipolar permanent magnet and the U-shaped yoke iron are positioned and assembled through a third boss and a third notch that are adapted to each other.

10. The linear motion electromagnetic mechanism according to any one of claims 1 to 5, characterized in that, The first bipolar permanent magnet and the second bipolar permanent magnet are provided in multiple groups. The number of coils is multiple. The multiple coils are connected in series, and the multiple coils are respectively distributed between multiple groups of the first bipolar permanent magnet and the second bipolar permanent magnet in a one-to-one correspondence.

11. A relay, characterized in that, It includes a base, one or more moving contact assemblies, one or more static contact assemblies, and the linear motion electromagnetic mechanism according to any one of claims 1 to 10. One or more of the static contact assemblies are disposed on the base, one or more of the moving contact assemblies are disposed on the movable frame, and one or more of the moving contact assemblies and one or more of the static contact assemblies are disposed opposite to each other in a one-to-one correspondence.

12. The relay according to claim 11, characterized in that, Each of the moving contact assemblies includes a bracket, two moving reed pieces, and multiple moving contacts. One of the moving reed pieces is provided on each of the opposite sides of the bracket, and one moving contact is provided at each end of each moving reed piece.

13. The relay according to claim 12, wherein Each of the moving contact assemblies further includes two elastic pieces. One of the elastic pieces is provided on each of the opposite sides of the bracket, and the two moving reed pieces are respectively disposed on one side of the two elastic pieces facing away from the bracket in a one-to-one correspondence.

14. The relay according to claim 12 or 13, characterized in that, Each of the static contact assemblies includes four static contact pieces, four static contacts, and two arc extinguishing permanent magnets. The static contact pieces are arranged at intervals in pairs, and each pair of the static contact pieces is correspondingly arranged with one of the moving reed pieces. Two of the moving reed pieces in the same moving contact assembly are located between two pairs of the static contact pieces; Each of the static contact pieces is provided with the static contact point, and the static contact points and the moving contact points are in one-to-one correspondence and cooperation; In the arrangement direction of the two moving reed pieces, an arc extinguishing permanent magnet is arranged between every two adjacent static contact pieces.

15. A distribution box, characterized in that, It includes a circuit board and a relay according to any one of claims 11 to 14, and the relay is electrically connected to the circuit board.

16. A communication device, characterized in that, It includes an electrical equipment and a distribution box according to claim 15, and the electrical equipment is electrically connected to the distribution box.

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