Magnetic latching relay

Abstract

Provided in the present disclosure is a magnetic latching relay, comprising a base, a magnetic circuit assembly, a fixing frame, a monitoring movable spring and a monitoring static spring. The magnetic circuit assembly is arranged on the base and can swing in a first horizontal direction; and the fixing frame is connected to the base and covers at least part of the magnetic circuit assembly, and the fixing frame is provided with an insertion structure. The monitoring movable spring and the monitoring static spring are inserted into the insertion structure in a vertical direction, and ends of the monitoring movable spring and the monitoring static spring extend out from the insertion structure, the vertical direction being perpendicular to the first horizontal direction. When a first voltage is applied, the magnetic circuit assembly moves towards one side in the first horizontal direction, to drive the end of the monitoring movable spring to be closed with the end of the monitoring static spring; and when a second voltage opposite to the first voltage is applied, the magnetic circuit assembly moves towards the other opposite side, and the end of the monitoring movable spring is separated from the end of the monitoring static spring. The magnetic latching relay of the embodiments of the present disclosure can reduce the cost, and improve the monitoring safety and reliability.

Description

Magnetic latching relay

[0001] This disclosure claims priority to Chinese patent application No. 202410404713.8 filed on April 3, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of relays, and in particular to a magnetic latching relay. Background Art

[0003] A latching relay is a type of relay that connects and disconnects a load circuit. Its normally closed or normally open state depends on a permanent magnet, and its switching is triggered by different pulse signals. Typically, a latching relay is mounted on a circuit board, such as one in an electric meter.

[0004] In the prior art, in order to monitor the open and closed states of the contacts of a magnetic latching relay, a first test terminal is usually designed at the input end as a live wire, and a second test terminal is designed at the output end as a neutral wire. The voltage drop between the two test terminals is measured. If there is a voltage drop, it means that current is flowing and the relay is in a closed state. If there is no voltage drop, it means that no current is flowing and the relay is in an open state. However, since there are strong and weak currents on the circuit board, an isolation structure needs to be set between the strong and weak currents, such as adding an optocoupler device for isolation. However, this will increase the cost of the circuit board, and the monitoring safety and reliability need to be improved.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the relevant technology that is already known to a person of ordinary skill in the art. Summary of the Invention

[0006] The embodiments of the present disclosure provide a magnetic latching relay that can reduce costs and improve monitoring safety and reliability.

[0007] The magnetic latching relay of the disclosed embodiment includes: a base, a magnetic circuit assembly, a fixing frame, a monitoring spring, and a monitoring static spring. The magnetic circuit assembly is arranged on the base and can swing in a first horizontal direction; the fixing frame is connected to the base and covers at least a portion of the magnetic circuit assembly, and the fixing frame is provided with an insertion structure; the monitoring spring and the monitoring static spring are inserted into the insertion structure along the vertical direction, and their ends extend out of the insertion structure; wherein the vertical direction is perpendicular to the first horizontal direction; when a first voltage is applied, the magnetic circuit assembly moves to one side in the first horizontal direction, driving the end of the monitoring spring to close with the end of the monitoring static spring; when a second voltage opposite to the first voltage is applied, the magnetic circuit assembly moves to the opposite side, and the end of the monitoring spring is disconnected from the end of the monitoring static spring.

[0008] In some embodiments of the present disclosure, a side of the magnetic circuit assembly close to the monitoring movable spring is provided with a protrusion protruding toward the monitoring movable spring; when the magnetic circuit assembly moves close to the monitoring movable spring, the protrusion pushes the end of the monitoring movable spring to move toward the end of the monitoring static spring.

[0009] In some embodiments of the present disclosure, the magnetic circuit assembly includes a permanent magnet, an armature and an injection molded part; the injection molded part covers the permanent magnet and part of the armature; the injection molded part is swingably connected to the base and the fixing frame; the protrusion is integrally formed with the injection molded part.

[0010] In some embodiments of the present disclosure, the monitoring dynamic spring and the monitoring static spring are spaced apart along the first horizontal direction and located on one side of the magnetic circuit assembly in the first horizontal direction, and the monitoring dynamic spring is closer to the magnetic circuit assembly than the monitoring static spring.

[0011] In some embodiments of the present disclosure, the insertion structure includes a first insertion part and a second insertion part adjacent to each other in the first horizontal direction, the first insertion part has a first insertion space that passes through the vertical direction, and the second insertion part has a second insertion space that passes through the vertical direction, the first insertion space is used to insert the monitoring dynamic spring, and the second insertion space is used to insert the monitoring static spring.

[0012] In some embodiments of the present disclosure, the top ends of the first plug-in portion and the second plug-in portion are flush, the second plug-in portion protrudes in the vertical direction closer to the base than the first plug-in portion, so that the plug-in structure is stepped, and the size of the second plug-in space in the vertical direction is larger than the size of the first plug-in space in the vertical direction.

[0013] In some embodiments of the present disclosure, the second plug-in portion includes a first lateral protrusion and a second lateral protrusion, and the first lateral protrusion and the second lateral protrusion are respectively located on both sides of the second plug-in portion in the second horizontal direction and on the side of the fixing frame facing the base; the base is provided with a first plug-in slot and a second plug-in slot arranged opposite to each other along the second horizontal direction, and the first lateral protrusion and the second lateral protrusion are respectively fitted in the first plug-in slot and the second plug-in slot; wherein, the second horizontal direction is perpendicular to the first horizontal direction and the vertical direction, respectively.

[0014] In some embodiments of the present disclosure, the plug-in structure further includes a first partition, which is arranged at the top of the first plug-in space and the second plug-in space, and the first partition and the inner wall of the first plug-in space form a first plug-in port, and the first partition and the inner wall of the second plug-in space form the second plug-in port, and the first plug-in port and the second plug-in port are located at both ends of the diagonal of the plug-in structure; wherein, the first plug-in port is connected to the first plug-in space, and the second plug-in port is connected to the second plug-in space.

[0015] In some embodiments of the present disclosure, at least one first dispensing port and at least one second dispensing port are provided on the first partition, the first dispensing port is connected to the first insertion space, and the second dispensing port is connected to the second insertion space.

[0016] In some embodiments of the present disclosure, the monitoring dynamic spring includes a first lead-out portion, a first connecting portion and a first spring portion connected in sequence; wherein, the first connecting portion is inserted into the first insertion space, the first lead-out portion is inserted into the first insertion port and extends out of the first insertion space from the first insertion port, and the first spring portion extends from the first insertion space and extends in a direction close to the base; the monitoring static spring includes a second lead-out portion, a second connecting portion and a second spring portion connected in sequence; wherein, the second connecting portion is inserted into the second insertion space, the second lead-out portion is inserted into the second insertion port and extends out of the second insertion space from the second insertion port, and the second spring portion extends from the second insertion space and extends in a direction close to the base.

[0017] In some embodiments of the present disclosure, the first lead-out portion is provided with a first arc-shaped notch, which is located at the position where the first lead-out portion contacts the first separator, so as to make way for the flowing adhesive during dispensing; and / or, the second lead-out portion is provided with a second arc-shaped notch, which is located at the position where the second lead-out portion contacts the first separator, so as to make way for the flowing adhesive during dispensing.

[0018] In some embodiments of the present disclosure, at least one barb structure is respectively provided on two opposite sides of the second connecting portion in the second horizontal direction.

[0019] In some embodiments of the present disclosure, the width dimensions of the first reed portion and the second reed portion remain unchanged or gradually increase in the vertical direction.

[0020] In some embodiments of the present disclosure, the second spring portion of the monitoring static spring has a forked structure, and two monitoring static contacts are provided at the bottom of the forked structure; two monitoring moving contacts are provided at the bottom of the monitoring moving spring, and the two monitoring moving contacts correspond one-to-one to the two monitoring static contacts.

[0021] In some embodiments of the present disclosure, the first reed portion of the monitoring dynamic spring extends obliquely from the first connecting portion in a direction away from the second reed portion of the monitoring static spring.

[0022] In some embodiments of the present disclosure, the insertion structure and the fixing frame are integrally formed.

[0023] It can be seen from the above technical solutions that the present disclosure has at least one of the following advantages and positive effects:

[0024] 1. In the disclosed embodiment, a plug-in structure is provided on a fixed frame, into which a monitoring spring and a monitoring stationary spring are inserted. The monitoring spring and the magnetic circuit assembly move synchronously, enabling the closing and opening of the monitoring spring and the monitoring stationary spring, thereby monitoring the closing and opening of the magnetic latching relay. Because the monitoring spring and the monitoring stationary spring are inserted into the plug-in structure and located at the internal weak current signal terminal, direct strong current signal measurement at the static spring lead terminal is avoided, eliminating the need for a strong and weak current isolation structure, simplifying the circuit board design, reducing costs, and providing safer and more reliable monitoring of the relay.

[0025] 2. In the embodiment of the present disclosure, the plug-in structure is set on the fixed frame. Compared with the related art of setting a micro switch on the base for monitoring, it can simplify the assembly, and the structure of the entire fixed frame is simple, which can prevent deformation. When the magnetic circuit assembly swings, it can more accurately promote the movement of the monitoring dynamic spring, further improve the accuracy and reliability of monitoring, and at the same time reduce the volume of the entire relay, which is conducive to miniaturization.

[0026] 3. In the embodiment of the present disclosure, a convex portion protruding toward the monitoring movable spring is provided on the side of the magnetic circuit assembly close to the monitoring movable spring. When the magnetic circuit assembly moves close to the monitoring movable spring, the convex portion pushes the end of the monitoring movable spring to move toward the end of the monitoring static spring, which can more accurately transmit the movement of the magnetic circuit assembly to the monitoring movable spring, thereby improving the accuracy and reliability of monitoring.

[0027] 4. In the embodiment of the present disclosure, the second plug-in portion protrudes vertically toward the base relative to the first plug-in portion, so that the plug-in structure is stepped, which can increase the contact area between the monitoring static spring and the inner wall of the second plug-in space, prevent the monitoring static spring from exiting the second plug-in space, and improve its stability.

[0028] 5. In the disclosed embodiment, the second insertion portion includes a first lateral protrusion and a second lateral protrusion. The base is provided with a first insertion slot and a second insertion slot disposed opposite each other along a second horizontal direction. The first and second lateral protrusions are respectively inserted into the first and second insertion slots. Therefore, the first and second insertion slots can limit and position the first and second lateral protrusions, allowing the insertion structure to be more accurately and stably installed in the base. In addition, the insertion structure can be withdrawn from the first and second insertion slots, making installation more flexible and easy to adjust.

[0029] 6. In the embodiment of the present disclosure, the first spring portion of the monitoring movable spring extends obliquely from the first connecting portion toward the direction away from the second spring portion of the monitoring static spring, so that after the monitoring movable spring moves toward the monitoring static spring, the center of the monitoring movable contact can correspond to the center of the monitoring static contact, so that the two contacts are in center contact when closed, ensuring the stability of the closure of the two, thereby improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the three-dimensional structure of a magnetic latching relay according to some embodiments of the present disclosure;

[0031] FIG2 is a schematic top view of a magnetic latching relay in an off state with a cover removed, shown in some embodiments of the present disclosure;

[0032] FIG3 is a schematic top view of a magnetic latching relay in an off state with a cover and a fixing frame removed, according to some embodiments of the present disclosure;

[0033] FIG4 is a schematic top view of a magnetic latching relay in a closed state with the cover removed, shown in some embodiments of the present disclosure;

[0034] FIG5 is a schematic top view of a magnetic latching relay in a closed state without a cover, a fixing frame, and an injection molded part according to some embodiments of the present disclosure;

[0035] FIG6 is a side view of the assembled magnetic circuit assembly, the fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present disclosure;

[0036] FIG7 is a schematic diagram of the three-dimensional structure of the assembled magnetic circuit assembly, the fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present disclosure;

[0037] FIG8 is a perspective schematic diagram of an assembled fixing frame, a monitoring dynamic spring, and a monitoring static spring according to some embodiments of the present disclosure;

[0038] FIG9 is a perspective schematic diagram of an assembled fixing frame, a monitoring dynamic spring, and a monitoring static spring according to some embodiments of the present disclosure;

[0039] FIG10 is a schematic diagram of an insertion structure of a fixing frame according to some embodiments of the present disclosure (from a top view);

[0040] FIG11 is a cross-sectional view along line AA in FIG10 ;

[0041] FIG12 is a schematic diagram of an insertion structure of a fixing frame according to some embodiments of the present disclosure (seen from a bottom perspective);

[0042] FIG13 is a side view of the assembled fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present disclosure;

[0043] FIG14 is a perspective schematic diagram of an assembled fixing frame, a monitoring dynamic spring, and a monitoring static spring according to some embodiments of the present disclosure;

[0044] FIG15 is a schematic top view of a base and some components according to some embodiments of the present disclosure;

[0045] FIG16 is a schematic diagram of a three-dimensional structure of a base according to some embodiments of the present disclosure;

[0046] FIG17 is a top view of the first lateral protrusion and the second lateral protrusion of the insertion structure shown in some embodiments of the present disclosure, respectively mating with the first insertion slot and the second insertion slot of the base;

[0047] FIG18 is a schematic diagram of a three-dimensional structure of a monitoring spring according to some embodiments of the present disclosure;

[0048] FIG19 is a front view of a monitoring spring according to some embodiments of the present disclosure;

[0049] FIG20 is a schematic diagram of a three-dimensional structure of a monitoring static spring according to some embodiments of the present disclosure;

[0050] FIG21 is a front view of a monitoring static spring according to some embodiments of the present disclosure;

[0051] FIG22 is a top view of the assembled fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present disclosure;

[0052] FIG23 is a schematic cross-sectional view along line BB in FIG22 ;

[0053] FIG24 is a schematic cross-sectional view along CC in FIG22 .

[0054] Explanation of the reference numerals: 1. base; 11. first insertion slot; 12. second insertion slot; 10. cover; 2. magnetic circuit assembly; 21. permanent magnet; 22. armature; 23. injection molded part; 231. protrusion; 232. swing arm; 24. first yoke; 25. second yoke; 3. fixing frame; 31. second axial hole; 4. insertion structure; 401. first insertion part; 402. second insertion part; 4021. first lateral protrusion; 4022. second lateral protrusion; 41. first partition; 42. second partition; 43. first insertion port; 44. second insertion port; 45. first glue dispensing port; 46. second glue dispensing port; 47. wedge-shaped protrusion; 5. monitoring dynamic spring; 51. first lead-out part; 511. first arc-shaped notch; 52. first connecting member 53. First spring portion; 531. Monitoring moving contact; 54. Bending portion; 6. Monitoring static spring; 61. Second lead-out portion; 611. Second arc-shaped notch; 62. Second connecting portion; 621. Barb structure; 63. Second spring portion; 631. Monitoring static contact; 64. Reinforcement portion; 7. Coil assembly; 71. Coil frame; 72. Coil; 8. Contact assembly; 81. Moving spring; 811. Moving contact; 812. Moving spring lead-out terminal; 82. Static spring; 821. Static contact; 822. Static spring lead-out terminal; 9. Push card; X, first horizontal direction; Y, second horizontal direction; Z, vertical direction; S1, first insertion space; S2, second insertion space; L1, first center line; L2, second center line; α, angle. DETAILED DESCRIPTION

[0055] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0056] As shown in FIG1 , the magnetic latching relay of the embodiment of the present disclosure includes a base 1 and a cover 10 . The base 1 has a receiving space for arranging various components of the magnetic latching relay. The cover 10 covers the base 1 to protect the components in the base 1 .

[0057] As shown in Figures 2 to 5, the magnetic latching relay further includes a coil assembly 7, a magnetic circuit assembly 2, and a contact assembly 8, which are disposed within a base 1 and housed in a receiving space. Coil assembly 7 comprises a bobbin 71, an iron core (not shown), and a coil 72. The iron core is disposed within bobbin 71, and coil 72 is wound around the surface of bobbin 71.

[0058] The magnetic circuit assembly 2 is arranged on the base 1 and can swing in the first horizontal direction X. In the embodiment of the present disclosure, as shown in Figures 3, 5 and 17, the magnetic circuit assembly 2 may include a permanent magnet 21, an armature 22 and an injection molded part 23. The injection molded part 23 is coated on the permanent magnet 21 and part of the armature 22, so that the permanent magnet 21 and the armature 22 are fixedly connected, and the armature 22 protrudes from the permanent magnet 21 along the second horizontal direction Y. The injection molded part 23 is swingably connected to the base 1, that is, the injection molded part 23 is provided with a rotating shaft, and the base 1 is provided with a first axial hole (not shown in the figure), and one end of the rotating shaft of the injection molded part 23 is connected to the first axial hole and can rotate in the first axial hole. As shown in Figure 3, the injection molded part 23 also includes an integrally formed swing arm 232.

[0059] The magnetic circuit assembly 2 may further include a first yoke 24 and a second yoke 25 . The first yoke 24 and the second yoke 25 are located in the base 1 and at both ends of the coil assembly 7 , and are respectively connected to both ends of the iron core.

[0060] Continuing with reference to Figures 2 and 3 , the contact assembly 8 includes a movable spring 81 and a stationary spring 82. The movable spring 81 is provided with a movable contact 811, and the stationary spring 82 is provided with a stationary contact 821. The movable contacts 811 and 821 are arranged correspondingly in the first horizontal direction X. As shown in Figure 2 , the magnetic latching relay also includes a movable spring lead-out terminal 812 and a stationary spring lead-out terminal 822, respectively disposed outside the base 1. The movable spring lead-out terminal 812 is connected to the movable spring 81, and the stationary spring lead-out terminal 822 is connected to the stationary spring 82, thereby connecting the movable spring 81 and the stationary spring 82 to the load circuit.

[0061] As shown in Figures 2 to 5, the magnetic latching relay of the present embodiment further includes a push card 9, which is movably mounted on the base 1. One end of the push card 9 is connected to the swing arm 232 of the injection molded part 23, and the other end is connected to the end of the movable reed 81 having the movable contact 811.

[0062] When a positive voltage is applied to coil 72, permanent magnet 21 of magnetic circuit assembly 2 (as shown in FIG17 ) swings sideways in the first horizontal direction X, simultaneously driving armature 22 to swing. Armature 22 overlaps first yoke 24 and second yoke 25, creating a constant magnetic field among permanent magnet 21, armature 22, first yoke 24, iron core, and second yoke 25. Simultaneously, swing arm 232 of injection molded part 23 swings in the same direction as permanent magnet 21. Swing arm 232 drives pusher clip 9 in the first horizontal direction X, which in turn drives movable reed 81 toward stationary reed 82, closing movable contact 811 and stationary contact 821 (as shown in FIG4 and FIG5 ), closing the magnetic latching relay and conducting the external load circuit. When the coil is de-energized, permanent magnet 21 maintains this constant magnetic field, thereby maintaining the position of swing arm 232 and, in turn, keeping the movable and stationary contacts closed, thus keeping the magnetic latching relay closed.

[0063] When a reverse voltage is applied to coil 72, permanent magnet 21 swings in the opposite direction in the first horizontal direction X, simultaneously driving armature 22 to swing in the opposite direction. Armature 22 then overlaps first yoke 24 and second yoke 25, forming another reverse constant magnetic field. Simultaneously, swing arm 232 of injection molded part 23 swings with permanent magnet 21. Swing arm 232 drives push card 9 to move in the opposite direction in the first horizontal direction X. This push card 9 then moves moving reed 81 away from static reed 82, disconnecting moving contact 811 from static contact 821 (as shown in Figures 2 and 3), effectively disconnecting the magnetic latching relay and the external load circuit. When the coil is de-energized, permanent magnet 21 maintains this reverse constant magnetic field, thereby maintaining the position of swing arm 232 and, consequently, keeping the moving and static contacts disconnected, thus keeping the magnetic latching relay in the off state.

[0064] The above describes the partial structure of a magnetic latching relay and the principle of its closing and opening. In actual use, it is usually necessary to monitor the closing and opening states of the magnetic latching relay to ensure the safety of the load circuit.

[0065] Based on this, the magnetic latching relay of the disclosed embodiment can more easily monitor its closed and open states. As shown in Figures 2 and 4, the magnetic latching relay also includes a fixed frame 3, which is connected to the base 1 and covers at least a portion of the magnetic circuit assembly 2. The fixed frame 3 is used to fix the magnetic circuit assembly 2 to the base 1 and limit the position of the magnetic circuit assembly 2 in the vertical direction Z, so that the magnetic circuit assembly 2 can swing smoothly in the base 1. Continuing with Figure 2, the fixed frame 3 is provided with a second axial hole 31, and the other end of the rotating shaft of the injection molded part 23 is connected to the second axial hole 31 and can rotate in the second axial hole 31. The fixed frame 3 is provided with a column, and the base 1 is provided with a corresponding position with a socket. The column of the fixed frame 3 is inserted into the socket to achieve a fixed connection between the fixed frame 3 and the base 1. Since the fixed frame 3 can cover at least a portion of the magnetic circuit assembly 2 in the vertical direction Z, the fixed frame 3 can limit the position of the magnetic circuit assembly 2 in the vertical direction Z, preventing the magnetic circuit assembly 2 from being misaligned in the vertical direction Z and affecting its normal swing.

[0066] It should be noted that, in the embodiment of the present disclosure, the first horizontal direction X, the second horizontal direction Y and the vertical direction Z are respectively perpendicular to each other, and the first horizontal direction X, the second horizontal direction Y and the vertical direction Z are merely technical terms representing different directions and do not have any special limiting meaning.

[0067] As shown in FIG. 2 and FIG. 4 , the fixing frame 3 is provided with an inserting structure 4 , and the inserting structure 4 is located on one side of the magnetic circuit assembly 2 in the first horizontal direction X.

[0068] As shown in FIG6 and FIG7 , the magnetic latching relay of the embodiment of the present disclosure further includes a monitoring dynamic spring 5 and a monitoring static spring 6 , which are inserted into the insertion structure 4 along the vertical direction Z and whose ends extend out of the insertion structure 4 .

[0069] When a first voltage is applied, the magnetic circuit assembly 2 moves to one side in the first horizontal direction X, driving the end of the monitoring movable spring 5 to close with the end of the monitoring static spring 6. When a second voltage opposite to the first voltage is applied, the magnetic circuit assembly 2 moves to the opposite side, disconnecting the end of the monitoring movable spring 5 from the end of the monitoring static spring 6.

[0070] In the embodiment of the present disclosure, the plug-in structure 4 is set on the fixing frame 3. Compared with the related art of setting a micro switch on the base 1 for monitoring, it can simplify the assembly, further improve the accuracy and reliability of monitoring, and at the same time reduce the volume of the entire relay, which is conducive to miniaturization.

[0071] If the first voltage is a reverse voltage and the second voltage is a forward voltage, as shown in Figures 2 and 3, when the first voltage is applied, the magnetic latching relay is in the open state, and the monitoring spring 5 and the monitoring spring 6 are in the closed state. When the second voltage is applied, as shown in Figures 4 and 5, the magnetic latching relay is in the closed state, and the monitoring spring 5 and the monitoring spring 6 are in the open state. That is, the closed and open states of the magnetic latching relay are opposite to the closed and open states of the monitoring spring 5 and the monitoring spring 6. This can be called asynchronous monitoring. If the closed and open states of the magnetic latching relay are the same as the closed and open states of the monitoring spring 5 and the monitoring spring 6, this can be called synchronous monitoring. Synchronous monitoring or asynchronous monitoring can be selected by setting the position of the monitoring dynamic spring 5 and the monitoring static spring 6. For example, in Figure 2, the plug-in structure 4 makes the monitoring dynamic spring 5 and the monitoring static spring 6 located on the side of the magnetic circuit component 2 close to the contact component 8, which is asynchronous monitoring. If the plug-in structure 4 makes the monitoring dynamic spring 5 and the monitoring static spring 6 located on the side of the magnetic circuit component 2 close to the coil component 7, it is synchronous monitoring. Those skilled in the art can set synchronous monitoring or asynchronous monitoring according to actual conditions. Asynchronous monitoring is used as an example for explanation in this disclosure. In some embodiments, the first voltage and the second voltage can be opposite pulse voltages.

[0072] In some embodiments, when the magnetic circuit assembly 2 moves toward the monitoring movable spring 5 , the magnetic circuit assembly can push the end of the monitoring movable spring 5 to move toward the end of the monitoring static spring 6 .

[0073] In some embodiments, as shown in Figures 3 and 6, a side of the magnetic circuit assembly 2 near the monitoring movable spring 5 is provided with a protrusion 231 that protrudes toward the monitoring movable spring 5. When the magnetic circuit assembly 2 moves toward the monitoring movable spring 5, the protrusion 231 pushes the end of the monitoring movable spring 5 toward the end of the monitoring static spring 6.

[0074] As shown in Figures 6 and 7, in some embodiments, the protrusion 231 is located at the bottom of the injection molded part 23 and is integrally formed with the injection molded part 23. In other embodiments, the protrusion 231 can also be an independent component connected to the injection molded part 23 by bonding, clamping, or screwing, which is not particularly limited here.

[0075] The protrusion 231 corresponds to the end of the monitoring spring 5. When the magnetic circuit assembly 2 is not swinging, the protrusion 231 can contact the end of the monitoring spring 5. When the magnetic circuit assembly 2 swings toward the monitoring spring 5, the protrusion 231 can abut the end of the monitoring spring 5, pushing the monitoring spring 5 toward the monitoring static spring 6 and bringing the two into contact. When the magnetic circuit assembly 2 swings away from the monitoring spring 5, the protrusion 231 moves away from the monitoring spring 5, and the monitoring spring 5 can rely on its own reaction force to move away from the monitoring static spring 6, achieving disconnection between the two. By providing a protrusion 231 protruding toward the monitoring spring 5 on the side of the magnetic circuit assembly 2 near the monitoring spring 5, when the magnetic circuit assembly 2 moves toward the monitoring spring 5, the protrusion 231 pushes the end of the monitoring spring 5 toward the end of the monitoring static spring 6, which can more accurately transmit the movement of the magnetic circuit assembly 2 to the monitoring spring 5, thereby improving the accuracy and reliability of monitoring.

[0076] In some embodiments, the protrusion 231 can be provided on the push card 9. Unlike in FIG4 , the insertion structure 4 is located on the side of the fixing frame 3 near the push card 9 in the second horizontal direction Y. The monitoring spring 5 and the monitoring static spring 6 are inserted into the insertion structure 4, and the protrusion 231 corresponds to the end of the monitoring spring 5. When the magnetic circuit assembly 2 moves, it drives the push card 9 to move simultaneously. The protrusion 231 can abut against the end of the monitoring spring 5, causing the monitoring spring 5 to move closer to the monitoring static spring 6 and bring the two into contact.

[0077] In some embodiments, the monitoring movable spring 5 and the monitoring static spring 6 are spaced apart along the first horizontal direction X and are located on one side of the magnetic circuit assembly 2 in the first horizontal direction X. The monitoring movable spring 5 is closer to the magnetic circuit assembly 2 than the monitoring static spring 6, and the protrusion 231 can be used to push the monitoring movable spring 5 to move in the direction close to the monitoring static spring 6.

[0078] As shown in Figure 2, in the embodiment of the present disclosure, the insertion structure 4 includes a first insertion part 401 and a second insertion part 402 adjacent to each other in the first horizontal direction X. As shown in Figure 11, the first insertion part 401 has a first insertion space S1 that passes through in the vertical direction Z, and the second insertion part 402 has a second insertion space S2 that passes through in the vertical direction Z. The first insertion space S1 is used for inserting and monitoring the dynamic spring 5, and the second insertion space S2 is used for inserting and monitoring the static spring 6.

[0079] In some embodiments, as shown in Figures 8 to 10, the insertion structure 4 has an insertion space that runs through in the vertical direction Z. As shown in Figures 10 to 12, a second partition 42 extending along the second horizontal direction Y is provided in the insertion space. The second partition 42 divides the insertion space into a first insertion space S1 and a second insertion space S2 distributed in the first horizontal direction X (as shown in Figure 11). The portion of the insertion structure 4 that encloses the first insertion space S1 is the first insertion portion 401, and the portion that encloses the second insertion space S2 is the second insertion portion 402.

[0080] As shown in Figures 8 and 9, the insertion structure 4 is provided on one side of the fixed frame 3, and the insertion space is surrounded by the side walls of the insertion structure 4. As shown in Figures 10 and 12, the side walls of the insertion space have a rectangular outline. In the vertical direction Z, as shown in Figure 12, the bottom end of the second partition 42 can be flush with the bottom end of the insertion space, and the top end of the second partition 42 is located in the insertion space. As shown in Figures 10 and 11, the two ends of the second partition 42 are respectively connected to the side walls of the insertion space that are opposite in the second horizontal direction Y, so as to separate the insertion space into a first insertion space S1 and a second insertion space S2, forming a first insertion portion 401 and a second insertion portion 402. After the monitoring dynamic spring 5 and the monitoring static spring 6 are inserted into the two insertion spaces, the monitoring dynamic spring 5 and the monitoring static spring 6 can be separated to prevent contact between the two.

[0081] In some embodiments, as shown in Figures 13 and 14, the top ends of the first insertion portion 401 and the second insertion portion 402 are flush, and the second insertion portion 402 protrudes in the vertical direction Z relative to the first insertion portion 401 toward the base 1, so that the insertion structure 4 is stepped, and the size of the second insertion space S2 in the vertical direction Z is larger than the size of the first insertion space S1 in the vertical direction Z, thereby increasing the contact area between the monitoring static spring 6 and the inner wall of the second insertion space S2, preventing the monitoring static spring 6 from exiting the second insertion space S2, and improving its stability.

[0082] As shown in Figures 13 and 14, in some embodiments, the second plug-in portion 402 includes a first lateral protrusion 4021 and a second lateral protrusion 4022, and the first lateral protrusion 4021 and the second lateral protrusion 4022 are respectively located on both sides of the second plug-in portion 402 in the second horizontal direction Y and are located on the side of the fixing frame 3 facing the base 1.

[0083] As shown in FIG. 14 , in the second horizontal direction Y, the first lateral protrusion 4021 and the second lateral protrusion 4022 may be symmetrically arranged, and the size of the first lateral protrusion 4021 and the second lateral protrusion 4022 in the first horizontal direction X may be smaller than the size of the second insertion portion 402 .

[0084] As shown in Figures 15 and 16 , the base 1 is provided with a first insertion slot 11 and a second insertion slot 12, and the first lateral protrusion 4021 and the second lateral protrusion 4022 are respectively inserted and fitted into the first insertion slot 11 and the second insertion slot 12. As shown in Figure 17 , to more clearly illustrate the assembly relationship between the insertion slots and the lateral protrusions, the fixing frame 3 has been removed from Figure 17 . As can be seen from Figure 17 , the first lateral protrusion 4021 is inserted and fitted into the first insertion slot 11, and the second lateral protrusion 4022 is inserted and fitted into the second insertion slot 12.

[0085] As shown in Figures 15 to 17, the first insertion slot 11 and the second insertion slot 12 can limit and position the first lateral protrusion 4021 and the second lateral protrusion 4022, allowing the insertion structure 4 to be more accurately and stably installed in the base 1. In addition, the insertion structure 4 can be withdrawn from the first insertion slot 11 and the second insertion slot 12, making installation more flexible and easy to adjust.

[0086] As shown in FIG13 , the thickness of the bottom portion of the first lateral protrusion 4021 (e.g., the portion circled by the dotted line in FIG13 ) gradually decreases toward its bottom end, where the thickness refers to the dimension of the first lateral protrusion 4021 along the first horizontal direction X. The bottom end of the first lateral protrusion 4021 can be designed with rounded corners. This makes it easier for the bottom portion of the first lateral protrusion 4021 to be inserted into the first insertion slot 11. The structure of the second lateral protrusion 4022 can be the same as that of the first lateral protrusion 4021 and will not be further described here.

[0087] As shown in Figures 10 to 12, in the embodiment of the present disclosure, the insertion structure 4 further includes a first partition 41, which is disposed at the top of the first insertion space S1 and the second insertion space S2. The first partition 41 and the inner wall of the first insertion space S1 form a first insertion opening 43, and the first partition 41 and the inner wall of the second insertion space S2 form a second insertion opening 44. The first insertion opening 43 and the second insertion opening 44 are respectively located at the two ends of the diagonal line of the insertion structure 4. The first insertion opening 43 is connected to the first insertion space S1, and the second insertion opening 44 is connected to the second insertion space S2.

[0088] As shown in FIG10 , the tops of the first partition 41 and the second partition 42 are cross-shaped, and there is a certain distance between the two opposite sides of the first partition 41 in the second horizontal direction Y and the two side walls of the insertion space, so that the first partition 41, the second partition 42, and the side walls of the insertion space form an opening that passes through in the vertical direction Z. The opening can be used to insert the lead-out portions of the monitoring dynamic spring 5 and the monitoring static spring 6, and to extend the lead-out portions from the opening to the insertion structure 4. In order to keep the two lead-out portions as far apart as possible, the openings located at the diagonal ends of the rectangular outline of the insertion space can be selected as the first insertion port 43 and the second insertion port 44, respectively. Of course, openings not located at the diagonal ends can also be selected as the first insertion port and the second insertion port, as long as the lead-out portions of the monitoring dynamic spring 5 and the monitoring static spring 6 cannot touch each other.

[0089] As shown in Figure 12, the size of the first partition 41 in the vertical direction Z is smaller than the size of the second partition 42, that is, the first partition 41 does not extend to the bottom end of the insertion space in the vertical direction Z, so that the monitoring dynamic spring 5 and the monitoring static spring 6 can be accommodated in the first insertion space S1 and the second insertion space S2.

[0090] Continuing with reference to FIG12 , a plurality of wedge-shaped protrusions 47 are provided on the side walls of the first insertion space S1 and the second insertion space S2 in the first horizontal direction X, so as to serve as a guide when inserting the monitoring movable spring 5 and the monitoring static spring 6, and after the insertion is completed, the monitoring movable spring 5 and the monitoring static spring 6 are clamped to prevent the monitoring movable spring 5 or the monitoring static spring 6 from moving in the vertical direction Z.

[0091] As shown in Figure 10, the second partition 42 is also provided with at least one first glue dispensing port 45 and at least one second glue dispensing port 46. The first glue dispensing port 45 is connected to the first insertion space S1, and the second glue dispensing port 46 is connected to the second insertion space S2. After the monitoring movable spring 5 and the monitoring static spring 6 are inserted, glue can be dispensed through the first glue dispensing port 45 and the second glue dispensing port 46 to bond and fix the monitoring movable spring 5 and the monitoring static spring 6 respectively. The number of the first glue dispensing port 45 and the second glue dispensing port 46 can be one or more, for example, two, three, four or more. Those skilled in the art can set them according to the size of the second partition 42, and no special limitation is made here. In addition, in addition to the first insertion port 43 and the second insertion port 44, the other two openings can also be used as glue dispensing ports.

[0092] As shown in Figure 12, the insert structure 4 can be integrally formed with the fixing frame 3. For example, if the fixing frame 3 is a plastic part, the insert structure 4 and fixing frame 3 can be integrally formed using an injection molding process. This simplifies assembly, reduces space requirements, allows for more precise positioning of the insert structure 4, and enhances the robustness of the insert structure 4. Furthermore, the entire fixing frame 3 has a simple structure and resists deformation, allowing for more precise movement of the monitoring spring 5 when the magnetic circuit assembly 2 swings.

[0093] As shown in Figures 18 and 19, the monitoring spring 5 includes a first lead portion 51, a first connecting portion 52, and a first spring portion 53, which are connected in sequence. The first connecting portion 52 is inserted into the first insertion space S1, the first lead portion 51 is inserted into the first insertion opening 43 and extends out of the insertion space from the first insertion opening 43, and the first spring portion 53 extends from the first insertion space S1 and toward the base 1.

[0094] As shown in Figures 22 and 23, the top of the first connecting portion 52 of the monitoring spring 5 abuts the bottom surface of the first partition 41. After glue is applied, the top surface of the first connecting portion 52 can be bonded and fixed to the bottom surface of the first partition 41. Therefore, the first partition 41 not only serves as a separator but also serves to secure the first connecting portion 52. The dimension of the first connecting portion 52 of the monitoring spring 5 along the second horizontal direction Y can be equal to or slightly larger than the distance between the two side walls of the first insertion space S1. This allows the two sides of the monitoring spring 5 to contact or form an interference fit with the two side walls of the first insertion space S1, thereby improving the stability of the first connecting portion 52 when inserted into the insertion structure 4.

[0095] As shown in Figure 23, the first lead-out portion 51 of the monitoring dynamic spring 5 is inserted into the first insertion port 43, and the width dimension of the first lead-out portion 51 (the dimension along the second horizontal direction Y) is equal to or slightly larger than the width dimension of the first insertion port 43 (the dimension along the second horizontal direction Y), so that both sides of the first lead-out portion 51 can contact or interference fit with the side walls of the first insertion port 43, thereby improving the stability of the first lead-out portion 51 when inserted into the first insertion port 43.

[0096] As shown in Figures 20 and 21, the monitoring static spring 6 includes a second lead-out portion 61, a second connecting portion 62 and a second spring portion 63 connected in sequence; wherein, the second connecting portion 62 is inserted into the second insertion space S2, the second lead-out portion 61 is inserted into the second insertion port 44 and extends out of the insertion space from the second insertion port 44, and the second spring portion 63 extends from the second insertion space S2 and extends in a direction close to the base 1.

[0097] As shown in Figure 24 , the top of the second connecting portion 62 of the monitoring static spring 6 abuts the bottom surface of the first partition 41. After glue is applied, the top surface of the second connecting portion 62 can be bonded and fixed to the bottom surface of the first partition 41. Therefore, the first partition 41 not only serves as a separator but also secures the second connecting portion 62. The dimension of the second connecting portion 62 of the monitoring static spring 6 along the second horizontal direction Y can be equal to or slightly greater than the distance between the two side walls of the second insertion space S2. This allows both sides of the monitoring static spring 6 to contact or form an interference fit with the two side walls of the second insertion space S2, improving the stability of the second connecting portion 62 when inserted into the insertion structure 4.

[0098] As shown in Figures 10 and 24, the second lead-out portion 61 of the monitoring static spring 6 is inserted into the second insertion port 44, and the width dimension of the second lead-out portion 61 (the dimension along the second horizontal direction Y) is equal to or slightly larger than the width dimension of the second insertion port 44 (the dimension along the second horizontal direction Y), so that both sides of the second lead-out portion 61 can contact or interference fit with the side walls of the second insertion port 44, thereby improving the stability of the second lead-out portion 61 when inserted into the second insertion port 44.

[0099] As shown in FIG. 18 and FIG. 19 , the first lead-out portion 51 is provided with a first arc-shaped notch 511 . As shown in FIG. 23 , the first arc-shaped notch 511 is located at a portion where the first lead-out portion 51 contacts the first partition 41 .

[0100] As shown in FIG. 20 and FIG. 21 , the second lead-out portion 61 may also be provided with a second arc-shaped notch 611 . As shown in FIG. 24 , the second arc-shaped notch 611 is located at the portion where the second lead-out portion 61 contacts the first partition 41 .

[0101] For example, the first arc-shaped notch 511 and the second arc-shaped notch 611 can be semicircular notches, as shown in Figures 23 and 24. The first arc-shaped notch 511 and the second arc-shaped notch 611 are higher than the top surface of the first partition 41 in the vertical direction Z. The first arc-shaped notch 511 and the second arc-shaped notch 611 can make way for the flowing adhesive during dispensing, allowing the adhesive to flow smoothly into the contact area between the first partition 41 and the first lead-out portion 51 and the second lead-out portion 61. In the embodiment of the present disclosure, by providing arc-shaped notches in the monitoring dynamic spring 5 and the monitoring static spring 6 and providing a dispensing port on the insertion structure 4, the adhesive can be fully penetrated, making the fixing of the monitoring dynamic spring 5 and the monitoring static spring 6 more secure and preventing loosening due to external forces.

[0102] As shown in FIG. 18 , the first lead-out portion 51 and the first connecting portion 52 of the monitoring dynamic spring 5 of the embodiment of the present disclosure may be a laminated structure to increase the strength of the plug-in portion.

[0103] As shown in Figures 6 and 18 , the bottom end of the first leaf portion 53 of the monitoring spring 5 is further provided with a bent portion 54 that bends toward the magnetic circuit assembly 2. When the monitoring spring 5 is relatively far from the magnetic circuit assembly 2 in the first horizontal direction X, the bent portion 54 can reduce the distance between the monitoring spring 5 and the magnetic circuit assembly 2, allowing the movement of the magnetic circuit assembly 2 to be accurately and promptly transmitted to the monitoring spring 5, thereby ensuring accurate monitoring.

[0104] As shown in Figures 20 and 21 , in some embodiments, at least one barb structure 621 is provided on two opposite sides of the second connecting portion 62 in the second horizontal direction Y. The barb structure 621 is gradually inclined and protrudes outward from top to bottom.

[0105] The monitoring spring 5 and the monitoring spring 6 are inserted upward from the bottom of the insertion structure 4. When the monitoring spring 5 is inserted, the first lead-out portion 51 moves upward into the first insertion space S1 (shown in Figure 11), then enters the first insertion opening 43 and continues to move upward until the first connecting portion 52 is inserted into the first insertion space S1.

[0106] When the monitoring static spring 6 is inserted, the second lead-out portion 61 moves upward into the second insertion space S2 (shown in FIG. 11 ), then enters the second insertion port 44 and continues to move upward until the second connection portion 62 is inserted into the second insertion space S2. During the process of the second connection portion 62 entering the second insertion space S2 and moving upward, the top of the barb structure 621 contacts the two side walls of the second insertion space S2. As the second connection portion 62 moves upward, the barb structure 621 gradually generates a pre-tightening force against the two side walls of the second insertion space S2, and the pre-tightening force gradually increases as the barb structure 621 moves upward. Therefore, the barb structure 621 can make the second connection portion 62 more stably inserted into the second insertion space S2, preventing the second connection portion 62 from withdrawing.

[0107] In the embodiment of the present disclosure, grooves that cooperate with the barb structure 621 can also be set on the two side walls of the second insertion space S1. When the second connecting part 62 is inserted into the second insertion space S2, the barb structure 621 is locked in the groove to further prevent the second connecting part 62 from withdrawing.

[0108] As shown in FIG. 19 and FIG. 21 , the width dimensions of the first reed portion 53 and the second reed portion 63 in the vertical direction Z are constant or gradually increase.

[0109] As shown in Figure 19, taking the monitoring spring 5 as an example, the width of the first leaf portion 53 of the monitoring spring 5 can be configured to gradually increase in the direction away from the first connection portion 52 in the vertical direction Z. The lower portion of the first leaf portion 53 of the monitoring spring 5 is subjected to greater force, while the upper portion is subjected to less force. Therefore, designing the first connection portion 52 to be narrow at the top and wide at the bottom can improve the uniformity of force applied to the first connection portion 52 and avoid stress concentration that may lead to a reduction or loss of contact pressure.

[0110] As shown in Figure 21 , taking the monitoring static spring 6 as an example, the width of the second spring portion 63 of the monitoring static spring 6 can be set to be constant in the vertical direction Z. This configuration can avoid stress concentration, effectively preventing fatigue failure of the monitoring static spring 6 caused by long-term stress, and preventing a reduction or loss of contact pressure.

[0111] As shown in Figures 20 and 21 , in some embodiments, the second spring portion 63 of the monitoring static spring 6 has a bifurcated structure, with two monitoring static contacts 631 disposed at the bottom of the bifurcated structure. As shown in Figures 18 and 19 , the bottom of the monitoring dynamic spring 5 has two monitoring dynamic contacts 531 disposed thereon, with the two monitoring dynamic contacts 531 corresponding one-to-one to the two monitoring static contacts 631.

[0112] In the disclosed embodiment, when the magnetic circuit assembly 2 pushes the monitoring movable spring 5 to move, the two monitoring movable contacts 531 of the monitoring movable spring 5 contact with the two monitoring static contacts 631 of the monitoring static spring 6 to close the magnetic latching relay.

[0113] As shown in FIG13 , in some embodiments, the first spring portion 53 of the monitoring movable spring 5 can extend obliquely from the first connecting portion 52 in a direction away from the second spring portion 63 of the monitoring static spring 6. As shown in FIG13 , the first centerline L1 of the monitoring movable contact 531 and the second centerline L2 of the monitoring static contact 631 form an angle α. When the magnetic circuit assembly 2 pushes the first spring portion 53 of the monitoring movable spring 5 to move, the trajectory of the monitoring movable contact 531 is an arc, causing the center position of the monitoring movable contact 531 in the vertical direction Z to change. By configuring the first spring portion 53 to extend obliquely in a direction away from the second spring portion 63, the center of the monitoring movable contact 531 can align with the center of the monitoring static contact 631 after movement, achieving center-to-center contact between the two contacts when closed, thereby ensuring the stability of the closure.

[0114] In the disclosed embodiment, the monitoring movable spring 5 has double contacts, and the thickness of the first spring portion 53 of the monitoring movable spring 5 can be set to be thinner than that of the monitoring static spring 6. The first spring portion 53 of the monitoring movable spring 5 is elastic, so that the magnetic circuit component 2 can push the first spring portion 53 with a smaller force, thereby improving the accuracy of monitoring and avoiding deformation and mechanical fatigue failure of the monitoring movable spring 5 caused by thrust.

[0115] In the disclosed embodiment, the monitoring static spring 6 has two contacts. As shown in FIG20 , the second spring portion 63 has a bifurcated structure, that is, the second spring portion 63 has two springs with a gap between them. Two monitoring static contacts 631 are respectively provided at the bottom of the two springs.

[0116] In the disclosed embodiment, dual contacts are provided on each of the monitoring spring 5 and the monitoring spring 6. If a foreign object prevents proper contact between one set of dynamic and static contacts, the other set can maintain proper contact, ensuring monitoring reliability. The second spring portion 63 of the monitoring spring 6 is designed as a bifurcated structure. This ensures proper contact between the two contacts even with minimal force, even when the monitoring spring 5 tilts during movement, improving monitoring reliability.

[0117] As shown in Figure 20 , the monitoring static spring 6 of the disclosed embodiment further includes a reinforcement portion 64 located at the top of the second connecting portion 62 and arranged opposite the second lead-out portion 61 in the second horizontal direction Y. As shown in Figure 24 , after the monitoring static spring 6 is inserted into the second insertion space S2, the reinforcement portion 64 can be inserted into the opening opposite the second insertion port 44 formed by the first partition 41, the second partition 42, and the sidewalls of the insertion space. The dimension of the reinforcement portion 64 in the second horizontal direction Y is equal to or slightly larger than the dimension of the opening, such that the reinforcement portion 64 contacts or forms an interference fit with both sidewalls of the opening. The top of the reinforcement portion 64 is lower than the top surface of the second partition 42 to facilitate glue dispensing.

[0118] In the embodiment of the present disclosure, the plug-in structure 4 is provided on the fixing frame 3, and the monitoring dynamic spring 5 and the monitoring static spring 6 are inserted into the plug-in structure 4, which makes assembly simple and reduces the occupied space. Since the monitoring dynamic spring 5 is pushed by the magnetic circuit assembly 2, the monitoring dynamic spring 5 and the magnetic circuit assembly 2 move synchronously, making the monitoring of the monitoring dynamic spring 5 and the monitoring static spring 6 more accurate. The overall structure of the fixing frame 3 is simple and not easy to deform, which further improves the accuracy of the magnetic circuit assembly 2 in pushing the monitoring dynamic spring 5. In addition, compared with the existing technology, the embodiment of the present disclosure does not need to directly take the signal on the strong current side at the load lead-out end, but directly acts on the internal weak current signal interrupt, without considering the problem of isolation between strong current and weak current, which simplifies the circuit design and is safer and more reliable.

[0119] It is understandable that the various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0120] In the embodiments of the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0121] In the description of the embodiments of the present disclosure, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the embodiments of the present disclosure.

[0122] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the disclosed embodiments. In this specification, schematic representations 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 any one or more embodiments or examples.

[0123] The above is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A magnetic latching relay, characterized in that: include: base; a magnetic circuit assembly, disposed on the base and capable of swinging in a first horizontal direction; A fixing frame connected to the base and covering at least a portion of the magnetic circuit assembly, wherein the fixing frame is provided with an inserting structure; The monitoring dynamic spring and the monitoring static spring are inserted into the insertion structure along the vertical direction and their ends extend out of the insertion structure; wherein the vertical direction is perpendicular to the first horizontal direction; When a first voltage is applied, the magnetic circuit assembly moves to one side in the first horizontal direction, driving the end of the monitoring movable spring and the end of the monitoring static spring to close; when a second voltage opposite to the first voltage is applied, the magnetic circuit assembly moves to the opposite side, and the end of the monitoring movable spring and the end of the monitoring static spring are disconnected.

2. The magnetic latching relay according to claim 1, wherein: A convex portion protruding toward the monitoring movable spring is provided on one side of the magnetic circuit assembly close to the monitoring movable spring; when the magnetic circuit assembly moves close to the monitoring movable spring, the convex portion pushes the end of the monitoring movable spring to move toward the end of the monitoring static spring.

3. The magnetic latching relay according to claim 2, wherein: The magnetic circuit assembly includes a permanent magnet, an armature and an injection molded part; the injection molded part covers the permanent magnet and a portion of the armature; the injection molded part is swingably connected to the base and the fixing frame; the protrusion is integrally formed with the injection molded part.

4. The magnetic latching relay according to claim 1, wherein: The monitoring movable spring and the monitoring static spring are spaced apart along the first horizontal direction and located on one side of the magnetic circuit assembly in the first horizontal direction. The monitoring movable spring is closer to the magnetic circuit assembly than the monitoring static spring.

5. The magnetic latching relay according to claim 1, wherein: The insertion structure includes a first insertion part and a second insertion part adjacent to each other in the first horizontal direction, the first insertion part has a first insertion space running through the vertical direction, the second insertion part has a second insertion space running through the vertical direction, the first insertion space is used to insert the monitoring dynamic spring, and the second insertion space is used to insert the monitoring static spring.

6. The magnetic latching relay according to claim 5, wherein: The top ends of the first insertion portion and the second insertion portion are flush, and the second insertion portion protrudes closer to the base than the first insertion portion in the vertical direction, so that the insertion structure is stepped, and the size of the second insertion space in the vertical direction is larger than the size of the first insertion space in the vertical direction.

7. The magnetic latching relay according to claim 6, wherein: The second inserting portion includes a first lateral protrusion and a second lateral protrusion, wherein the first lateral protrusion and the second lateral protrusion are respectively located on both sides of the second inserting portion in the second horizontal direction and on a side of the fixing frame facing the base; The base is provided with a first insertion slot and a second insertion slot which are arranged opposite to each other along the second horizontal direction, and the first lateral protrusion and the second lateral protrusion are respectively inserted into the first insertion slot and the second insertion slot; The second horizontal direction is perpendicular to the first horizontal direction and the vertical direction respectively.

8. The magnetic latching relay according to any one of claims 5 to 7, characterized in that: The insertion structure further includes a first partition, which is provided at the top of the first insertion space and the second insertion space. The first partition and the inner wall of the first insertion space form a first insertion opening, and the first partition and the inner wall of the second insertion space form a second insertion opening. The first insertion opening and the second insertion opening are located at two ends of a diagonal line of the insertion structure. The first insertion port is communicated with the first insertion space, and the second insertion port is communicated with the second insertion space.

9. The magnetic latching relay according to claim 8, wherein: At least one first glue dispensing port and at least one second glue dispensing port are formed on the first partition. The first glue dispensing port is communicated with the first insertion space, and the second glue dispensing port is communicated with the second insertion space.

10. The magnetic latching relay according to claim 9, wherein: The monitoring spring includes a first lead portion, a first connecting portion, and a first spring portion connected in sequence; wherein the first connecting portion is inserted into the first insertion space, the first lead portion is inserted into the first insertion port and extends from the first insertion port into the first insertion space, and the first spring portion extends from the first insertion space and extends toward the base. The monitoring static spring includes a second lead-out portion, a second connecting portion and a second spring portion connected in sequence; wherein, the second connecting portion is inserted into the second insertion space, the second lead-out portion is inserted into the second insertion port and extends from the second insertion port to the second insertion space, and the second spring portion extends from the second insertion space and extends in a direction close to the base.

11. The magnetic latching relay according to claim 10, wherein: The first lead-out portion is provided with a first arc-shaped notch, and the first arc-shaped notch is located at a position where the first lead-out portion contacts the first separator, so as to make way for the flowing adhesive during dispensing; and / or, The second lead-out portion is provided with a second arc-shaped notch, and the second arc-shaped notch is located at a position where the second lead-out portion contacts the first separator, so as to make way for the flowing adhesive during dispensing.

12. The magnetic latching relay according to claim 10, wherein: At least one barb structure is respectively provided on two opposite sides of the second connecting portion in the second horizontal direction.

13. The magnetic latching relay according to claim 10, wherein: The widths of the first reed portion and the second reed portion are constant or gradually increase in the vertical direction.

14. The magnetic latching relay according to claim 10, wherein: The second spring portion of the monitoring static spring has a bifurcated structure, and two monitoring static contacts are provided at the bottom of the bifurcated structure; Two monitoring moving contacts are provided at the bottom of the monitoring moving spring, and the two monitoring moving contacts correspond to the two monitoring static contacts in a one-to-one manner.

15. The magnetic latching relay according to claim 10, wherein: The first reed portion of the monitoring dynamic spring extends obliquely from the first connecting portion toward a direction away from the second reed portion of the monitoring static spring.

16. The magnetic latching relay according to any one of claims 1 to 7, characterized in that: The insertion structure and the fixing frame are integrally formed.

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