High-stability magnetic latching relay

Abstract

The utility model belongs to the technical field of relays, and particularly relates to a high-stability magnetic latching relay, which comprises a base, an upper cover, a coil assembly, an armature assembly, a movable contact assembly, a static contact assembly and the like, an assembly plate and a reinforcing partition plate are arranged in the base, and the assembly plate is in positioning fit with the base through a positioning rod to provide a stable assembly basis for the armature assembly. According to the utility model, through the innovative structural design, the assembly precision, the operation stability and the environmental adaptability are improved, the assembly efficiency is improved, the structure is simple, the cost is low, the production cost is low, and the production cost is low. And the application of a precise control circuit in power and electronic equipment is powerfully promoted.

Description

Technical Field

[0001] This utility model belongs to the field of relay technology, specifically a highly stable magnetic latching relay. Background Technology

[0002] A magnetic latching relay is an electronic control device widely used in applications requiring low-power control, such as smart meters, automated control systems, and power system protection devices. Magnetic latching relays can maintain the open or closed state of the circuit after the control signal disappears, thereby achieving energy saving and reducing maintenance.

[0003] Existing magnetic latching relays are mainly composed of the following parts: coil, iron core, armature, moving contact, stationary contact, housing and auxiliary components. Working principle: It works based on the magnetic latching principle. The internal permanent magnet maintains the normal contact state. Only when a specific positive or reverse DC pulse voltage is received, the coil generates a magnetic field and interacts with the permanent magnet, driving the armature to switch the contact circuit on and off. After that, the permanent magnet maintains the new state.

[0004] Currently, magnetic latching relays have the following drawbacks: the positioning structure of their internal components is not precise enough, especially for key components such as the armature assembly, moving plate, and stationary plate. They lack effective multi-dimensional positioning methods, which leads to large positional deviations during assembly, resulting in low production efficiency and difficulty in guaranteeing product qualification rate. Due to inaccurate positioning, the electrical performance stability and reliability of the relay are seriously affected, making it impossible to meet the requirements for precise circuit control in complex and ever-changing power systems or electronic equipment. Utility Model Content

[0005] To overcome the shortcomings of existing magnetic latching relays, a highly stable magnetic latching relay is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A high-stability magnetic latching relay of this utility model includes a base equipped with a coil assembly, an armature assembly, a moving contact assembly, and a stationary contact assembly. A top cover is fixedly mounted on the base via a locking structure. The coil assembly is used to reciprocate the armature assembly to achieve circuit switching. A linkage plate is movably disposed within the base for linking the armature assembly and the moving contact assembly. The moving contact assembly includes a moving piece, a spring, and a moving contact. The stationary contact assembly includes a stationary piece and a stationary contact. An assembly plate for assembling the armature assembly is mounted within the base. The assembly plate has a through hole for inserting the rotating shaft of the armature assembly. A first positioning rod and a second positioning rod are fixedly installed on the assembly plate. A first positioning part that cooperates with the first positioning rod is fixedly installed in the base. A second positioning part that cooperates with the second positioning rod is fixedly installed in the base. A first positioning block and a second positioning block are also fixedly installed on the assembly plate. A reinforcing partition for separating the armature assembly, the moving contact assembly, and the stationary contact assembly is provided in the base. A first positioning groove that cooperates with the first positioning block is opened on the reinforcing partition. A second positioning groove that cooperates with the second positioning block is opened on the base.

[0007] Preferably, the assembly plate has a rectangular through hole.

[0008] Preferably, a first assembly part for assembling a movable piece is fixedly provided inside the base, a third positioning block is fixedly provided on one side of the movable piece, a third positioning groove that cooperates with the third positioning block is fixedly provided inside the base, a first step is provided on the movable piece, and a second step that cooperates with the first step is fixedly provided on one side of the first assembly part.

[0009] Preferably, the base and the top cover are respectively provided with a first slot and a second slot that cooperate with the moving piece.

[0010] Preferably, a second assembly part for assembling a stationary piece is fixedly provided inside the base, a fourth positioning block is fixedly provided on one side of the stationary piece, a fourth positioning groove that cooperates with the fourth positioning block is fixedly provided inside the base, and a third slot and a fourth slot that cooperate with the stationary piece are respectively provided on the base and the top cover.

[0011] Preferably, a limiting block is fixedly provided inside the base, and a guide groove that cooperates with the linkage plate is provided on the limiting block. A support block that cooperates with the linkage plate is fixedly provided inside the upper cover.

[0012] Preferably, a fifth positioning block is fixedly provided on one side of the moving piece, and a fifth positioning groove that cooperates with the fifth positioning block is fixedly provided inside the upper cover.

[0013] Preferably, a sixth positioning block is fixedly provided on one side of the stationary plate, and a sixth positioning groove that cooperates with the sixth positioning block is fixedly provided inside the upper cover.

[0014] Preferably, the base is fixedly provided with an assembly slot, and the upper cover is fixedly provided with an assembly block corresponding to the assembly slot.

[0015] Preferably, the coil assembly includes an iron core contact piece, the iron core contact piece is provided with a bent portion, a third positioning portion that cooperates with the bent portion is fixedly provided in the base, a seventh positioning block and an eighth positioning block are fixedly provided on the iron core contact piece, and a seventh positioning groove and an eighth positioning groove that cooperate with the seventh positioning block and the eighth positioning block, respectively, are opened on the inner wall of the base.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model features a rich and precise positioning structure, such as the cooperation between the assembly plate and its positioning rods and blocks with the corresponding positioning parts and positioning slots in the base, and the multi-dimensional positioning design of the moving and stationary pieces. These structures greatly improve the assembly accuracy of each component, effectively solving the problems of low production efficiency and low product qualification rate caused by inaccurate positioning in the prior art. During the assembly process, each component can be installed quickly and accurately, significantly shortening the assembly time and reducing errors. At the same time, the precise assembly ensures that the moving and stationary contacts of the relay can always maintain a good contact state when the relay is working, avoiding poor contact, intermittent connection and malfunction, greatly enhancing the electrical performance stability of the relay, ensuring precise control of circuit switching in complex power systems or electronic equipment, and improving the overall operational reliability.

[0018] 2. Through the structural design of this utility model, no fixing glue is needed during the connection and fixing of each component. Unlike traditional technologies that often rely on glue to fix parts, this feature avoids many problems that glue may cause, such as loosening of parts due to glue aging, environmental pollution from glue volatiles, and decreased assembly accuracy caused by uneven glue application. This not only simplifies the assembly process and improves assembly efficiency, but also makes the relay more environmentally friendly and reliable, reduces the potential for failure caused by glue-related factors, and can maintain stable structural integrity and performance consistency during long-term use, reducing the frequency of maintenance and replacement, and further improving the overall quality and market competitiveness of the product. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention, but do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a three-dimensional view of the internal structure of the base of this utility model;

[0021] Figure 2 This is a front view of the internal structure of the base of this utility model;

[0022] Figure 3 This is a three-dimensional structural view of the entire utility model;

[0023] Figure 4 This is a utility model Figure 1 Assembly disassembly 3D view of the middle assembly panel;

[0024] Figure 5 This is a three-dimensional view of the internal coil assembly structure of the base of this utility model;

[0025] Figure 6 This is a three-dimensional view of the assembly structure of the linkage plate of this utility model;

[0026] Figure 7 This is a three-dimensional view of the assembly structure of the moving contact component and the base of this utility model;

[0027] Figure 8 This is a three-dimensional structural view of the top cover of this utility model;

[0028] Figure 9 This is a structural assembly and disassembly diagram of the upper cover, moving contact assembly, and stationary contact assembly of this utility model;

[0029] Figure 10 This is an exploded three-dimensional view of the overall structure of this utility model;

[0030] Legend:

[0031] 1. Base; 01. Top cover; 2. Coil assembly; 201. Iron core contact piece; 2011. Bending part; 202. Seventh positioning block; 203. Eighth positioning block; 3. Armature assembly; 4. Moving contact assembly; 401. Moving piece; 4011. First step; 4012. Third positioning block; 4013. Fifth positioning block; 402. Spring; 403. Moving contact; 5. Stationary contact assembly; 501. Stationary piece; 5011. Fourth positioning block; 5012. Sixth positioning block; 502. Stationary contact; 6. Linkage plate; 7. Assembly plate; 701. Through hole; 702. First positioning rod; 7021. First positioning part; 703. Second positioning rod; 7 04. First positioning block; 705. Second positioning block; 706. Rectangular through hole; 8. Assembly slot; 9. Second positioning part; 10. Reinforcing partition; 11. First positioning groove; 12. Second positioning groove; 13. Seventh positioning groove; 14. Eighth positioning groove; 15. Third positioning part; 16. First assembly part; 1601. Second step; 17. Third positioning groove; 18. First slot; 19. Second slot; 20. Second assembly part; 21. Fourth positioning groove; 22. Fifth positioning groove; 23. Sixth positioning groove; 24. Limiting block; 2401. Guide groove; 25. Support block; 26. Assembly insert block; 28. Fourth slot; 29. ​​Third slot. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Specific implementation examples are given below.

[0034] See also Figures 1-10This utility model discloses a high-stability magnetic latching relay, comprising a base 1 equipped with a coil assembly 2, an armature assembly 3, a moving contact assembly 4, and a stationary contact assembly 5. A top cover 01 is fixedly mounted on the base 1 via a locking structure. The coil assembly 2 is used to reciprocate the armature assembly 3 to achieve circuit switching. A linkage plate 6 is movably disposed within the base 1 for linking the armature assembly 3 and the moving contact assembly 4. The moving contact assembly 4 includes a moving piece 401, a spring piece 402, and a moving contact 403. The stationary contact assembly 5 includes a stationary piece 501 and a stationary contact 502. An assembly plate 7 for assembling the armature assembly 3 is mounted within the base 1. The assembly plate 7 has a through hole 701 for inserting the rotating shaft of the armature assembly 3. The assembly plate 7 is fixedly provided with a first positioning rod 702 and a second positioning rod 703. The base 1 is fixedly provided with a first positioning part 7021 that cooperates with the first positioning rod 702, and a second positioning part 9 that cooperates with the second positioning rod 703. The assembly plate 7 is also fixedly provided with a first positioning block 704 and a second positioning block 705. The base 1 is provided with a reinforcing partition 10 for separating the armature assembly 3, the moving contact assembly 4, and the stationary contact assembly 5. The reinforcing partition 10 has a first positioning groove 11 that cooperates with the first positioning block 704, and the base 1 has a second positioning groove 12 that cooperates with the second positioning block 705. During operation, when the coil assembly 2 is energized, current flows through the coil... The coil generates a magnetic field, which exerts an electromagnetic force on the armature assembly 3. Since the pivot of the armature assembly 3 is located in the through hole 701 of the mounting plate 7, the armature assembly 3 can reciprocate pivoting around this pivot. The mounting plate 7, with the cooperation of the first positioning rod 702 and the first positioning part 7021 of the base 1, and the second positioning rod 703 and the second positioning part 9, accurately determines its position in the base 1, thus providing a stable assembly foundation for the armature assembly 3 and ensuring the accuracy and consistency of the armature assembly 3's pivoting under the influence of the magnetic field. Simultaneously, the reinforcing partition 10, through the cooperation of its first positioning groove 11 with the first positioning block 704 on the mounting plate 7, and the cooperation of its second positioning block 705 with the second positioning groove 12 on the base 1, further improves the assembly... The fixed and stable mounting plate 7, along with the reinforced partition plate 10, not only improves the structural strength of the base 1 but also effectively separates the armature assembly 3, moving contact assembly 4, and stationary contact assembly 5 in space. During relay operation, it prevents collisions, friction, or interference between components caused by electromagnetic forces or mechanical vibrations, ensuring that each component can independently and stably complete its own action, guaranteeing the reliability of circuit switching. The highly precise positioning structure greatly improves the overall assembly accuracy of the relay, effectively reducing the difficulty and error in the assembly process, significantly improving production efficiency and product qualification rate, extending the service life of the relay, and enabling it to operate continuously and stably in complex and changing electrical environments, ensuring the accuracy and safety of circuit control.

[0035] Furthermore, the assembly plate 7 is provided with a rectangular through hole 706; during operation, the rectangular through hole 706 can provide a channel for internal air circulation, which helps to dissipate heat when the relay generates heat during long-term operation, and avoids the adverse effects of excessive local temperature on the performance of components. When the relay is tested or maintained, the rectangular through hole 706 can also provide a certain space for the operation of testing tools or maintenance instruments, making it convenient to inspect, adjust or replace internal components.

[0036] Furthermore, a first assembly part 16 for assembling the movable piece 401 is fixedly provided inside the base 1. A third positioning block 4012 is fixedly provided on one side of the movable piece 401. A third positioning groove 17 that mates with the third positioning block 4012 is fixedly provided inside the base 1. A first step 4011 is formed on the movable piece 401. A second step 1601 that mates with the first step 4011 is fixedly provided on one side of the first assembly part 16. A first slot 18 and a second slot 19 that mate with the movable piece 401 are respectively formed on the base 1 and the upper cover 01. During operation, during the assembly of the movable piece 401, the third positioning block 4012 is embedded in the third positioning groove 17 of the base 1 to achieve precise lateral positioning of the movable piece 401 and ensure that the movable piece 401 does not shift in the horizontal direction. Meanwhile, the first step 4011 and the second step 1601 of the first assembly part 16 cooperate to achieve the longitudinal positioning of the moving piece 401 and determine the accurate position of the moving piece 401 in the vertical direction. This positioning method allows the moving piece 401 to be stably installed on the first assembly part 16. The multi-dimensional precision positioning structure ensures the high accuracy of the assembly of the moving piece 401 and effectively reduces problems such as poor contact, loose connection or malfunction of the moving contact 403 and the stationary contact 502 caused by the deviation of the installation position of the moving piece 401. This not only improves the working reliability of the moving contact assembly 4, but also enhances the electrical performance stability of the entire relay, ensuring that the circuit can be accurately controlled under various complex electrical working conditions, and improving the applicability and reliability of the relay in power systems or electronic equipment.

[0037] Furthermore, a second assembly part 20 for assembling the stationary piece 501 is fixedly provided inside the base 1. A fourth positioning block 5011 is fixedly provided on one side of the stationary piece 501. A fourth positioning groove 21 that mates with the fourth positioning block 5011 is fixedly provided inside the base 1. A third slot 29 and a fourth slot 28 that mate with the stationary piece 501 are respectively provided on the base 1 and the upper cover 01. During operation, when the stationary piece 501 is installed, the fourth positioning block 5011 is inserted into the fourth positioning groove 21 of the base 1 to achieve lateral positioning of the stationary piece 501. To keep it stable in the horizontal direction, the third slot 29 and the fourth slot 28 limit and fix the two ends of the stationary piece 501 respectively, further determining the accurate position of the stationary piece 501 between the base 1 and the upper cover 01, preventing the stationary piece 501 from being displaced in the vertical or other directions. During the operation of the relay, the stable stationary piece 501 provides a reliable contact target for the moving contact 403, ensuring the positional accuracy and contact pressure stability of the moving contact 403 and the stationary contact 502 each time they make contact, thereby ensuring the reliability and stability of the circuit switching.

[0038] Furthermore, a limiting block 24 is fixedly installed inside the base 1, and a guide groove 2401 that cooperates with the linkage plate 6 is opened on the limiting block 24. A support block 25 that cooperates with the linkage plate 6 is fixedly installed inside the upper cover 01. During operation, when the linkage plate 6 drives the spring 402 to move, its edge is embedded in the guide groove 2401 of the limiting block 24. The guide groove 2401 precisely restricts the movement direction and range of the linkage plate 6, so that the linkage plate 6 can only move along a predetermined straight line or a specific trajectory, thereby ensuring that the moving contact assembly 4 has a high degree of accuracy and consistency in its movement under the drive of the linkage plate 6. The support block 25 inside the upper cover 01 provides support for the other side of the linkage plate 6, ensuring that the linkage plate 6 remains flat and stable throughout the entire movement process, thereby ensuring that the contact action between the moving contact assembly 4 and the stationary contact assembly 5 can be performed accurately.

[0039] Furthermore, a fifth positioning block 4013 is fixedly provided on one side of the moving piece 401, and a fifth positioning groove 22 that cooperates with the fifth positioning block 4013 is fixedly provided inside the upper cover 01. During operation, when the relay is assembled, the moving piece 401 is precisely embedded in the fifth positioning groove 22 of the upper cover 01 with the help of the fifth positioning block 4013, thereby being firmly fixed in a specific direction. This fixing method effectively limits the displacement of the moving piece 401 that may be caused by slight external vibration, shaking during transportation, or other unexpected interference factors, so that the moving piece 401 always maintains the precise position required by the design in the static state, thereby ensuring that the moving contact 403 and the stationary contact 502 maintain a stable relative distance and positional relationship, laying a solid foundation for the precise contact or separation of the moving contact 403 and the stationary contact 502 when the relay is working normally.

[0040] Furthermore, a sixth positioning block 5012 is fixedly provided on one side of the stationary contact 501, and a sixth positioning groove 23 that cooperates with the sixth positioning block 5012 is fixedly provided inside the upper cover 01. During operation, the stationary contact 501 is further fixed in position by cooperating with the sixth positioning block 5012 and the sixth positioning groove 23 of the upper cover 01. When the relay is working, regardless of the influence of electromagnetic force, mechanical vibration or other external factors, the cooperation between the sixth positioning block 5012 and the sixth positioning groove 23 can ensure that the stationary contact 501 maintains a stable position and will not be displaced or shaken. This provides a solid foundation for the stable contact between the moving contact 403 and the stationary contact 502. The stable position of the stationary contact 501 helps to maintain a constant contact resistance, reduces the fluctuation of electrical performance caused by changes in the position of the stationary contact 501, improves the accuracy and reliability of the relay in controlling the circuit switching, reduces the risk of electrical faults caused by unstable position of the stationary contact, and enables the relay to operate stably and reliably in various working environments, thereby enhancing the applicability and reliability of the relay in power systems and electronic equipment.

[0041] Furthermore, the base 1 is fixedly provided with an assembly slot 8, and the upper cover 01 is fixedly provided with an assembly plug 26 corresponding to the assembly slot 8. During operation, when the base 1 and the upper cover 01 are assembled, the assembly plug 26 of the upper cover 01 is accurately inserted into the assembly slot 8 of the base 1. This insertion method not only realizes the rapid positioning and assembly of the base 1 and the upper cover 01, but also ensures that the relative positional accuracy between the two is extremely high.

[0042] Furthermore, the coil assembly 2 includes an iron core contact piece 201, on which a bending portion 2011 is provided. A third positioning portion 15, which cooperates with the bending portion 2011, is fixedly provided inside the base 1. A seventh positioning block 202 and an eighth positioning block 203 are fixedly provided on the iron core contact piece 201. A seventh positioning groove 13 and an eighth positioning groove 14, respectively cooperating with the seventh positioning block 202 and the eighth positioning block 203, are opened on the inner wall of the base 1. During operation, in the assembly process of the iron core contact piece 201, preliminary positioning and cooperation are first achieved through the bending portion 2011 and the third positioning portion 15 of the base 1, ensuring... The approximate position and angle of the core contact piece 201 are determined. Then, the seventh positioning block 202 and the eighth positioning block 203 are respectively embedded in the seventh positioning groove 13 and the eighth positioning groove 14 on the inner wall of the base 1, so as to realize the precise three-dimensional positioning of the core contact piece 201 in the base 1. This precise positioning method ensures that the position of the core contact piece 201 in the base 1 is stable and accurate. The precise positioning structure significantly improves the assembly accuracy of the coil assembly 2, which not only enhances the electromagnetic driving effect on the armature assembly 3, but also improves the action sensitivity and accuracy of the relay, enabling it to operate stably in a complex electromagnetic environment and ensuring the accuracy and safety of circuit control.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-stability magnetic latching relay, comprising a base (1) equipped with a coil assembly (2), an armature assembly (3), a moving contact assembly (4), and a stationary contact assembly (5), wherein a top cover (01) is fixedly mounted on the base (1) by a locking structure, the coil assembly (2) is used to reciprocate the armature assembly (3) to realize the switching of the circuit, and a linkage plate (6) is movably disposed in the base (1) for linking the armature assembly (3) and the moving contact assembly (4), wherein the moving contact assembly (4) includes a moving piece (401), a spring piece (402), and a moving contact (403), and the stationary contact assembly (5) includes a stationary piece (501) and a stationary contact (502), characterized in that: The base (1) is fitted with an assembly plate (7) for assembling the armature assembly (3). The assembly plate (7) has a through hole (701) for inserting the rotating shaft of the armature assembly (3). A first positioning rod (702) and a second positioning rod (703) are fixedly installed on the assembly plate (7). A first positioning part (7021) that cooperates with the first positioning rod (702) is fixedly installed in the base (1). A second positioning part (7021) that cooperates with the second positioning rod (703) is fixedly installed in the base (1). The second positioning part (9) is further provided with a first positioning block (704) and a second positioning block (705) fixedly arranged on the assembly plate (7). The base (1) is provided with a reinforcing partition (10) for separating the armature assembly (3), the moving contact assembly (4), and the stationary contact assembly (5). The reinforcing partition (10) is provided with a first positioning groove (11) that cooperates with the first positioning block (704). The base (1) is provided with a second positioning groove (12) that cooperates with the second positioning block (705).

2. The high-stability magnetic latching relay according to claim 1, characterized in that: The assembly plate (7) has a rectangular through hole (706).

3. The high-stability magnetic latching relay according to claim 1, characterized in that: The base (1) is fixedly provided with a first assembly part (16) for assembling a movable piece (401). A third positioning block (4012) is fixedly provided on one side of the movable piece (401). A third positioning groove (17) that cooperates with the third positioning block (4012) is fixedly provided in the base (1). A first step (4011) is provided on the movable piece (401). A second step (1601) that cooperates with the first step (4011) is fixedly provided on one side of the first assembly part (16).

4. A highly stable magnetic latching relay according to claim 1, characterized in that: The base (1) and the top cover (01) are respectively provided with a first slot (18) and a second slot (19) that cooperate with the moving piece (401).

5. A highly stable magnetic latching relay according to claim 1, characterized in that: The base (1) is fixedly provided with a second assembly part (20) for assembling a stationary piece (501). A fourth positioning block (5011) is fixedly provided on one side of the stationary piece (501). A fourth positioning groove (21) that cooperates with the fourth positioning block (5011) is fixedly provided in the base (1). A third slot (29) and a fourth slot (28) that cooperate with the stationary piece (501) are respectively opened on the base (1) and the top cover (01).

6. A highly stable magnetic latching relay according to claim 1, characterized in that: A limiting block (24) is fixedly installed inside the base (1). A guide groove (2401) that cooperates with the linkage plate (6) is opened on the limiting block (24). A support block (25) that cooperates with the linkage plate (6) is fixedly installed inside the upper cover (01).

7. A highly stable magnetic latching relay according to claim 1, characterized in that: A fifth positioning block (4013) is fixedly provided on one side of the moving piece (401), and a fifth positioning groove (22) that cooperates with the fifth positioning block (4013) is fixedly provided inside the upper cover (01).

8. A highly stable magnetic latching relay according to claim 1, characterized in that: A sixth positioning block (5012) is fixedly provided on one side of the stationary plate (501), and a sixth positioning groove (23) that cooperates with the sixth positioning block (5012) is fixedly provided inside the upper cover (01).

9. A highly stable magnetic latching relay according to claim 1, characterized in that: The base (1) is fixedly provided with an assembly slot (8), and the top cover (01) is fixedly provided with an assembly plug (26) corresponding to the assembly slot (8).

10. A highly stable magnetic latching relay according to claim 1, characterized in that: The coil assembly (2) includes an iron core contact piece (201), on which a bending portion (2011) is provided. A third positioning portion (15) that cooperates with the bending portion (2011) is fixedly provided in the base (1). A seventh positioning block (202) and an eighth positioning block (203) are fixedly provided on the iron core contact piece (201). A seventh positioning groove (13) and an eighth positioning groove (14) that cooperate with the seventh positioning block (202) and the eighth positioning block (203) are respectively provided on the inner wall of the base (1).

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