Magnetic latching relay

Abstract

The present disclosure provides a magnetic latching relay, comprising a base, a fixing frame, a monitoring movable spring, and a monitoring stationary spring. The base is provided with an insertion slot; the fixing frame is arranged on the base, the fixing frame being provided with an insertion structure, and the insertion structure being configured for insertion into the insertion slot; the monitoring movable spring and the monitoring stationary spring are inserted into the insertion structure in the vertical direction, and end portions of the monitoring movable spring and the monitoring stationary spring each extend out of the insertion structure. The insertion structure of the magnetic latching relay of the present utility model can be more precisely arranged in the base, preventing stress deformation during the assembly process, and improving the accuracy of the monitoring movable spring and the monitoring stationary spring with respect to monitoring the working status of the magnetic latching relay.

Description

Magnetic latching relay

[0001] This disclosure claims priority to Chinese patent application No. 202420687220.5 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 switches a load circuit on and off. Its normally closed or normally open state depends on a permanent magnet, and its switching state is triggered by different electrical signals.

[0004] In the prior art, it is necessary to monitor the open and closed states of the contacts of a magnetic latching relay to determine its working state. However, the reliability of the state monitoring of the magnetic latching relay needs to be improved.

[0005] The above information disclosed in the background technology section is only used to enhance the understanding of the background of the present invention, and therefore it may include information that does not constitute related technology known to ordinary technicians in this field.

[0006] Utility Model Content

[0007] The embodiments of the present disclosure provide a magnetic latching relay that can improve monitoring reliability.

[0008] The magnetic latching relay of the present invention comprises a base, a mounting bracket, a monitoring spring, and a monitoring spring. The base is provided with a mounting slot; the mounting bracket is mounted on the base and provided with a mounting structure configured to be mounted in the mounting slot; the monitoring spring and the monitoring spring are vertically mounted in the mounting structure, with their ends extending out of the mounting structure.

[0009] According to some embodiments of the present invention, at least one side of the insertion structure is provided with a lateral protrusion, and the lateral protrusion is inserted into the insertion slot.

[0010] According to some embodiments of the present invention, the lateral protrusion includes a first lateral protrusion, which is located on one side of the insertion structure in the second horizontal direction; the insertion slot includes a first insertion slot, which corresponds to the first lateral protrusion in the vertical direction, so that the first lateral protrusion is inserted into the first insertion slot; wherein the second horizontal direction is perpendicular to the vertical direction.

[0011] According to some embodiments of the present invention, the lateral protrusion also includes a second lateral protrusion, which is located on the side of the insertion structure opposite to the first lateral protrusion in the second horizontal direction; the insertion slot also includes a second insertion slot, which corresponds to the second lateral protrusion in the vertical direction, so that the second lateral protrusion is inserted into the second insertion slot.

[0012] According to some embodiments of the present invention, it also includes: a magnetic circuit assembly, which is arranged on the base and can swing in a first horizontal direction to drive the monitoring movable spring to move, so that the monitoring movable spring and the monitoring static spring are closed or separated, and the fixed frame covers at least a portion of the magnetic circuit assembly; wherein, the first horizontal direction is perpendicular to the vertical direction.

[0013] According to some embodiments of the present invention, the lateral protrusion includes a third lateral protrusion, which is located on the side of the insertion structure opposite to the magnetic circuit assembly in the first horizontal direction; the insertion slot includes a third insertion slot, which corresponds to the third lateral protrusion in the vertical direction, so that the third lateral protrusion is inserted into the third insertion slot.

[0014] According to some embodiments of the present invention, 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, 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; wherein, the first lateral protrusion and the second lateral protrusion are respectively located on both sides of the second insertion part in the second horizontal direction.

[0015] According to some embodiments of the present invention, the third lateral protrusion is located on a side of the second inserting portion away from the first inserting portion, and in the second horizontal direction, a size of the third lateral protrusion is smaller than a size of the second inserting portion.

[0016] According to some embodiments of the present invention, the thickness of the bottom of at least one of the first lateral protrusion, the second lateral protrusion and the third lateral protrusion gradually decreases toward the respective bottom ends; and / or, in the first horizontal direction, the sizes of the first lateral protrusion and the second lateral protrusion are respectively smaller than the size of the second plug-in portion.

[0017] According to some embodiments of the present invention, the top ends of the first lateral protrusion, the second lateral protrusion and the third lateral protrusion are lower than or flush with the bottom surface of the fixing frame facing the magnetic circuit assembly; and / or, the bottom end of the second plug-in portion protrudes from or is flush with the bottom ends of the first lateral protrusion, the second lateral protrusion and the third lateral protrusion.

[0018] It can be seen from the above technical solution that the present invention has at least one of the following advantages and positive effects:

[0019] 1. In an embodiment of the present invention, an insertion slot is provided on the base, which has a guiding and limiting function for the insertion structure, and the insertion structure can be pushed and pulled along the insertion slot, so that the insertion structure can be more accurately arranged in the base, and stress deformation during the assembly process is avoided, thereby improving the accuracy of monitoring the working status of the magnetic latching relay by monitoring the dynamic spring and the static spring.

[0020] 2. In the embodiment of the present invention, a lateral protrusion is provided on at least one side of the insertion structure, and the lateral protrusion is inserted into the insertion slot. The insertion slot guides and positions the lateral protrusion, allowing the insertion structure to be installed more accurately and stably in the base, and installation is more flexible and simple.

[0021] 3. In an embodiment of the present invention, the thickness of the bottom of at least one of the first lateral protrusion, the second lateral protrusion and the third lateral protrusion gradually decreases towards the bottom end thereof, making it easier to insert into the corresponding insertion slot.

[0022] 4. In the embodiment of the present invention, the bottom end of the second insertion portion protrudes from or is flush with the bottom ends of the first lateral protrusion, the second lateral protrusion, and the third lateral protrusion. This facilitates insertion and minimizes the space occupied by the insertion structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0024] FIG1 is a schematic diagram of the three-dimensional structure of a magnetic latching relay with the cover removed according to some embodiments of the present invention;

[0025] FIG2 is a schematic top view of a magnetic latching relay in an off state with the cover removed, shown in some embodiments of the present invention;

[0026] FIG3 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 invention;

[0027] FIG4 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 invention;

[0028] FIG5 is a schematic diagram of a three-dimensional structure of a base according to some embodiments of the present invention;

[0029] FIG6 is a perspective schematic diagram of the assembled fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present invention;

[0030] 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 invention;

[0031] FIG8 is a schematic diagram of the three-dimensional structure of a magnetic latching relay according to some embodiments of the present invention, wherein the fixing frame has not yet been installed on the base;

[0032] FIG9 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 invention, respectively mating with the first insertion slot and the second insertion slot of the base;

[0033] FIG10 is a perspective schematic diagram of the assembled fixing frame, the monitoring dynamic spring, and the monitoring static spring shown in some embodiments of the present invention;

[0034] FIG11 is a top view of the first lateral protrusion, the second lateral protrusion, and the third lateral protrusion of the insertion structure shown in some embodiments of the present invention respectively engaging with the first insertion slot, the second insertion slot, and the third insertion slot of the base;

[0035] FIG12 is a schematic diagram of an insertion structure of a fixing frame according to some embodiments of the present invention (from a top view);

[0036] FIG13 is a cross-sectional view along AA in FIG12.

[0037] Explanation of the accompanying reference numerals: 1. base; 11. first insertion slot; 12. second insertion slot; 13. third insertion slot; 2. magnetic circuit assembly; 21. permanent magnet; 22. armature; 23. injection molded part; 232. swing arm; 24. first yoke; 25. second yoke; 3. fixing frame; 31. second axial hole; 4. insertion structure; 401. first insertion portion; 402. second insertion portion; 4021. first lateral protrusion; 4022. second lateral protrusion; 4023. third lateral protrusion; 41. first partition; 42. second partition; 43. first insertion port; 44. second insertion port; 45. first dispensing port; 46 , second glue dispensing port; 5. Monitoring dynamic spring; 531. Monitoring dynamic contact; 6. Monitoring static spring; 631. Monitoring static contact; 7. Coil assembly; 71. Coil frame; 72. Coil; 8. Contact assembly; 81. Dynamic spring piece; 811. Dynamic contact; 812. Dynamic spring lead-out terminal; 82. Static spring piece; 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. DETAILED DESCRIPTION

[0038] 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.

[0039] As shown in Figure 1, the magnetic latching relay of an embodiment of the present invention includes a base 1 and a cover (not shown in the figure). The base 1 has a storage space for arranging various components of the magnetic latching relay, and the cover is covered on the base 1 to protect the components in the base 1.

[0040] As shown in Figures 1 to 4, the magnetic latching relay also 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 housing. Coil assembly 7 includes 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.

[0041] 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 utility model, as shown in Figures 4 and 9, 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 4, the injection molded part 23 also includes an integrally formed swing arm 232.

[0042] 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.

[0043] As shown in FIG2 , 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. Continuing with FIG2 , the magnetic latching relay also includes a movable spring lead 812 and a stationary spring lead 822 , each disposed outside the base 1 . The movable spring lead 812 is connected to the movable spring 81 , and the stationary spring lead 822 is connected to the stationary spring 82 , thereby connecting the movable spring 81 and the stationary spring 82 to the load circuit.

[0044] As shown in Figures 2 to 4, the magnetic latching relay of the present embodiment further includes a push card 9 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 spring 81 having the movable contact 811.

[0045] When a positive voltage is applied to coil 72, permanent magnet 21 of magnetic circuit assembly 2 (as shown in FIG9 ) 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 component 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 FIG3 and FIG4 ), 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.

[0046] When a reverse voltage is applied to the coil, the permanent magnet 21 swings in the opposite direction in the first horizontal direction X, simultaneously driving the armature 22 to swing in the opposite direction. The armature 22 overlaps the first yoke 24 and the second yoke 25, forming another reverse constant magnetic field. Simultaneously, the swing arm 232 of the injection molded part 23 swings with the permanent magnet 21. The swing arm 232 drives the push card 9 to move in the opposite direction in the first horizontal direction X. The push card 9 drives the movable reed 81 away from the static reed 82, disconnecting the movable contact 811 from the static contact 821 (as shown in Figure 2), thereby disconnecting the magnetic latching relay and the external load circuit. When the coil is de-energized, the permanent magnet 21 maintains this reverse constant magnetic field, thereby maintaining the position of the swing arm 232, thereby keeping the movable and static contacts disconnected, and the magnetic latching relay in the off state.

[0047] 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.

[0048] Based on this, the magnetic latching relay of the embodiment of the present utility model can more easily monitor its closed and open states and improve the reliability of monitoring.

[0049] As shown in Figures 4 and 5, the base 1 is provided with an insertion slot, which can extend along the vertical direction Z. As shown in Figures 1 to 3, the magnetic holding relay of the embodiment of the present invention also includes a fixing frame 3, which is connected to the base 1 and covers at least part of the magnetic circuit component 2. The fixing frame 3 is used to fix the magnetic circuit component 2 to the base 1 and limit the position of the magnetic circuit component 2 in the vertical direction Z so that the magnetic circuit component 2 can swing smoothly in the base 1. Continuing to refer to Figure 2, the fixing 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. A column is provided on the fixing frame 3, and a socket is provided at the corresponding position of the base 1. The column of the fixing frame 3 is inserted into the socket to achieve a fixed connection between the fixing frame 3 and the base 1. Since the fixing frame 3 can cover at least part of the magnetic circuit assembly 2 in the vertical direction Z, the fixing frame 3 can limit the magnetic circuit assembly 2 in the vertical direction Z to prevent the magnetic circuit assembly 2 from being dislocated in the vertical direction Z and affecting its normal swing.

[0050] It should be noted that, in the embodiment of the present invention, 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 indicating different directions and do not have any special limiting meaning.

[0051] As shown in Figures 1 and 2 , the mounting frame 3 is provided with an insertion structure 4, which is configured to be inserted into the insertion slot. As shown in Figures 6 and 7 , the magnetic latching relay of this embodiment of the utility model further includes a monitoring spring 5 and a monitoring spring 6 , which are inserted into the insertion structure 4 along the vertical direction Z, with their ends extending out of the insertion structure 4. The closed and open states of the monitoring spring 5 and the monitoring spring 6 are used to monitor the operating state of the magnetic latching relay.

[0052] The operating state of the magnetic latching relay can be understood as the closed and open states of the movable contact 811 on the movable spring 81 and the static contact 821 on the static spring 82. The operating state of the magnetic latching relay is monitored using the monitoring movable spring 5 and the monitoring static spring 6. When the movable contact 811 and the static contact 821 are in the closed state, the monitoring movable spring 5 and the monitoring static spring 6 can be in the closed or open state. When the movable contact 811 and the static contact 821 are in the closed state, the monitoring movable spring 5 and the monitoring static spring 6 can be in the open or closed state.

[0053] In the embodiment of the present invention, the insertion slot has a guiding and limiting function for the insertion structure 4, and the insertion structure 4 can be pushed and pulled along the insertion slot, so that the insertion structure 4 can be more accurately arranged in the base 1, and avoid stress deformation during the assembly process, thereby improving the accuracy of monitoring the working status of the magnetic holding relay by monitoring the dynamic spring 5 and the static spring 6.

[0054] In some embodiments, as shown in FIG7 , the interposer structure 4 is located on one side of the magnetic circuit assembly 2 in a first horizontal direction X. 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, which is opposite to the first voltage, is applied, the magnetic circuit assembly 2 moves to the other side, disconnecting the end of the monitoring movable spring 5 from the end of the monitoring static spring 6. Because the movement of the magnetic circuit assembly 2 can achieve the closing and opening of the movable contact 811 and the static contact 821, the status of the movable contact 811 and the static contact 821 can be determined by the closed and open status of the monitoring movable spring 5 and the monitoring static spring 6.

[0055] In other embodiments, the closing and opening of the monitoring movable spring 5 and the monitoring static spring 6 can also be achieved by other means. For example, a linkage can be set between the monitoring movable spring 5 and the movable spring piece 81 so that the monitoring movable spring 5 and the movable spring piece 81 move synchronously to monitor the working status of the relay.

[0056] As shown in Figure 6, in some embodiments, a monitoring moving contact 531 is provided at the end of the monitoring moving spring 5, and a monitoring static contact 631 is provided at the end of the monitoring static spring 6. The closing and opening of the monitoring moving spring 5 and the monitoring static spring 6 can be the closing and opening of the monitoring moving contact 531 and the monitoring static contact 631.

[0057] It should be noted that if the first voltage is a reverse voltage, the second voltage is a forward voltage. As shown in FIG2 , when the first voltage is applied, the magnetic latching relay is in the open state, and the monitoring movable spring 5 and the monitoring static spring 6 are in the closed state. As shown in FIG3 and FIG4 , when the second voltage is applied, the magnetic latching relay is in the closed state, and the monitoring movable spring 5 and the monitoring static 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 movable spring 5 and the monitoring static 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 movable spring 5 and the monitoring static spring 6, this can be called synchronous monitoring. Synchronous monitoring or asynchronous monitoring can be selected by setting the position of the monitoring movable spring 5 and the monitoring static spring 6. Asynchronous monitoring is used as an example for explanation in the present utility model. In some embodiments, the first voltage and the second voltage can be reverse pulse voltages.

[0058] As shown in Figures 8 to 10, at least one side of the insertion structure 4 is provided with a lateral protrusion, which is inserted into the insertion slot. The lateral protrusion protrudes laterally upward from the insertion structure and is inserted into the insertion slot to further secure the insertion structure. The insertion slot guides and positions the lateral protrusion, allowing the insertion structure 4 to be more accurately and stably installed in the base 1, further improving the reliability of the contact between the monitoring dynamic spring 5 and the monitoring static spring 6. The lateral protrusion can also be withdrawn from the insertion slot, making installation more flexible and easy to adjust.

[0059] As shown in Figures 8 and 9 , to more clearly illustrate the assembly relationship between the insertion slot and the lateral protrusion, the fixing frame 3 is removed in Figure 9 . In some embodiments, the lateral protrusion includes a first lateral protrusion 4021, which is located on one side of the insertion structure 4 in the second horizontal direction Y. As shown in Figure 5 , the insertion slot includes a first insertion slot 11, which corresponds to the first lateral protrusion 4021 in the vertical direction Z, so that the first lateral protrusion 4021 is inserted into the first insertion slot 11.

[0060] As shown in FIG10 , in some embodiments, the lateral protrusion further includes a second lateral protrusion 4022, which is located on a side of the insertion structure 4 opposite the first lateral protrusion 4021 in the second horizontal direction Y. Continuing with FIG5 , the insertion slot further includes a second insertion slot 12, which corresponds to the second lateral protrusion 4022 in the vertical direction Z, allowing the second lateral protrusion 4022 to be inserted into the second insertion slot. In other words, the insertion structure 4 is provided with lateral protrusions on both sides in the second horizontal direction Y. 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. Furthermore, the insertion structure 4 can be withdrawn from the first insertion slot 11 and the second insertion slot 12, making installation more flexible and easier to adjust.

[0061] In some embodiments, the first lateral protrusion 4021 and the second lateral protrusion 4022 can have identical shapes and sizes. Of course, their shapes and sizes can also differ, as long as they can be successfully inserted into the corresponding insertion slots, and this is not particularly limited here. In some embodiments, the first lateral protrusion 4021 and the second lateral protrusion 4022 can be symmetrically arranged in the second horizontal direction Y.

[0062] In some embodiments, as shown in FIG11 , the lateral protrusion may further include a third lateral protrusion 4023 , which is located on a side of the insertion structure 4 opposite the magnetic circuit assembly 2 in the first horizontal direction X. The insertion slot includes a third insertion slot 13 , which corresponds to the third lateral protrusion 4023 in the vertical direction Z, such that the third lateral protrusion 4023 is inserted into the third insertion slot 13 .

[0063] In some embodiments, the lateral protrusions may include at least one of a first lateral protrusion 4021 , a second lateral protrusion 4022 and a third lateral protrusion 4023 . Those skilled in the art may set them according to actual conditions, and no special limitation is made here.

[0064] As shown in Figures 2 and 13, in the embodiment of the present invention, 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. 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.

[0065] In some embodiments, as shown in FIG12 , the insertion structure 4 has an insertion space extending in the vertical direction Z. A second partition 42 extending along the second horizontal direction Y is provided in the insertion space, dividing the insertion space into a first insertion space S1 and a second insertion space S2 distributed along the first horizontal direction X. The portion of the insertion structure 4 enclosing the first insertion space S1 is a first insertion portion 401, and the portion enclosing the second insertion space S2 is 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.

[0066] As shown in Figure 10, the top ends of the first insertion part 401 and the second insertion part 402 are flush, and the second insertion part 402 protrudes in the vertical direction Z relative to the first insertion part 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.

[0067] As shown in FIG. 11 , the first lateral protrusion 4021 and the second lateral protrusion 4022 of the embodiment of the present invention are respectively located on both sides of the second insertion portion 402 in the second horizontal direction Y.

[0068] In some embodiments, as shown in FIG11 , the third lateral protrusion 4023 is located on a side of the second insertion portion 402 away from the first insertion portion 401, and the third lateral protrusion 4023 is smaller than the second insertion portion 402 in the second horizontal direction Y. In other words, the third lateral protrusion 4023 is narrower than the second insertion portion 402 in the second horizontal direction Y, thereby facilitating insertion of the third lateral protrusion 4023 into the third insertion slot 13. The third lateral protrusion 4023 may be a bump protruding from the second insertion portion 402.

[0069] In the embodiment of the present disclosure, the first lateral protrusion 4021, the second lateral protrusion 4022 and / or the third lateral protrusion 4023 are located on the second insertion portion 402, making its size in the vertical direction Z larger and improving the stability of insertion into the corresponding insertion slot.

[0070] In some embodiments, the thickness of the bottom of at least one of the first lateral protrusion 4021, the second lateral protrusion 4022, and the third lateral protrusion 4023 gradually decreases toward the bottom end of each protrusion. As shown in FIG6 , the thickness of the bottom of the first lateral protrusion 4021 (such as the portion circled by the dashed line in FIG6 ) gradually decreases toward the bottom end, where 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 rounded. This makes it easier for the bottom of the first lateral protrusion 4021 to be inserted into the first insertion slot 11. The structures of the second lateral protrusion 4022 and the third lateral protrusion 4023 can be the same as that of the first lateral protrusion 4021 and will not be further described here.

[0071] In some embodiments, as shown in FIG6 , in the first horizontal direction X, the dimensions of the first lateral protrusion 4021 and the second lateral protrusion 4022 can be respectively smaller than the dimensions of the second insertion portion 402. That is, in the first horizontal direction X, the first lateral protrusion 4021 and the second lateral protrusion 4022 are respectively narrower than the second insertion portion 402, thereby facilitating insertion into the first insertion slot 11 and the second insertion slot 12 and saving material.

[0072] As shown in FIG10 , in some embodiments, the top ends of the first lateral protrusion 4021, the second lateral protrusion 4022, and the third lateral protrusion 4023 may be lower than or flush with the bottom surface of the fixing frame 3 facing the magnetic circuit assembly 2. That is, the lateral protrusions are located on the side of the fixing frame 3 facing the magnetic circuit assembly 2, and the dimension of the lateral protrusions in the vertical direction Z may be equal to or smaller than the dimension of the second insertion portion 402.

[0073] As shown in FIG10 , in some embodiments, the bottom end of the second insertion portion 402 protrudes from or is flush with the bottom ends of the first lateral protrusion 4021, the second lateral protrusion 4022, and the third lateral protrusion 4023. This facilitates insertion and minimizes the space occupied by the insertion structure 4.

[0074] As shown in FIG12 , in an embodiment of the present invention, 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, and forms a first insertion port 43 and a second insertion port 44 located at both ends of the diagonal line of the insertion structure 4 with the inner walls of the first insertion space S1 and the second insertion space S1, respectively. The first insertion port 43 is connected to the first insertion space S1, and the second insertion port 44 is connected to the second insertion space S2. One end of the monitoring dynamic spring 5 extends through the first insertion port 43, and one end of the monitoring static spring 6 extends through the second insertion port 44, so that the extended ends of the monitoring dynamic spring 5 and the monitoring static spring 6 are as far apart as possible to avoid contact between the extended ends, thereby improving the accuracy of monitoring.

[0075] As shown in Figure 12, 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.

[0076] 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.

[0077] In the embodiment of the present invention, the insertion 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 insertion structure 4, making assembly simple and reducing the occupied space. The base 1 is provided with an insertion slot, and the insertion structure 4 can be inserted into the insertion slot. The insertion slot serves to limit and position the insertion structure 4, so that the insertion structure 4 can be installed in the base 1 more accurately and stably, avoiding the stress generated during the assembly process of the relay (such as the stress generated by welding) that causes the monitoring dynamic spring 5 and the monitoring static spring 6 to be unable to close or the contact point to be unstable after closing, further improving the reliability of the contact between the monitoring dynamic spring 5 and the monitoring static spring 6.

[0078] It is understandable that the various embodiments / implementations provided by the present invention can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0079] In the embodiments of the present invention, 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 mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0080] In the description of the embodiments of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships 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 invention 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 limitations on the embodiments of the present invention.

[0081] 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 present invention. 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.

[0082] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetic latching relay, characterized in that: include: The base is provided with an insertion slot; A fixing frame is provided on the base, the fixing frame is provided with an inserting structure, and the inserting structure is configured to be inserted into the inserting slot; The monitoring dynamic spring and the monitoring static spring are inserted into the insertion structure in a vertical direction, and their ends extend out of the insertion structure respectively.

2. The magnetic latching relay according to claim 1, wherein: At least one side of the insertion structure is provided with a lateral protrusion, and the lateral protrusion is inserted into the insertion slot.

3. The magnetic latching relay according to claim 2, wherein: The lateral protrusion includes a first lateral protrusion, and the first lateral protrusion is located on one side of the insertion structure in the second horizontal direction; The insertion slot includes a first insertion slot, the first insertion slot corresponds to the first lateral protrusion in the vertical direction, so that the first lateral protrusion is inserted into the first insertion slot; The second horizontal direction is perpendicular to the vertical direction.

4. The magnetic latching relay according to claim 3, wherein: The lateral protrusion further includes a second lateral protrusion, which is located on a side of the insertion structure opposite to the first lateral protrusion in the second horizontal direction; The insertion slot further includes a second insertion slot, and the second insertion slot corresponds to the second lateral protrusion in the vertical direction, so that the second lateral protrusion is inserted into the second insertion slot.

5. The magnetic latching relay according to claim 4, wherein: Also includes: a magnetic circuit assembly, disposed on the base and capable of swinging in a first horizontal direction to drive the monitoring movable spring to move, thereby closing or separating the monitoring movable spring and the monitoring static spring, wherein the fixing frame covers at least a portion of the magnetic circuit assembly; The first horizontal direction is perpendicular to the vertical direction.

6. The magnetic latching relay according to claim 5, wherein: The lateral protrusion includes a third lateral protrusion, and the third lateral protrusion is located on a side of the insertion structure opposite to the magnetic circuit component in the first horizontal direction; The insertion slot includes a third insertion slot, and the third insertion slot corresponds to the third lateral protrusion in the vertical direction, so that the third lateral protrusion is inserted into the third insertion slot.

7. The magnetic latching relay according to claim 6, wherein: The insertion structure includes a first insertion portion and a second insertion portion adjacent to each other in the first horizontal direction, the first insertion portion having a first insertion space extending in the vertical direction, the second insertion portion having a second insertion space extending in the vertical direction, the first insertion space being used to insert the monitoring dynamic spring, and the second insertion space being used to insert the monitoring static spring; Wherein, the first lateral protrusion and the second lateral protrusion are respectively located on two sides of the second inserting portion in the second horizontal direction.

8. The magnetic latching relay according to claim 7, wherein: The third lateral protrusion is located on a side of the second inserting portion away from the first inserting portion, and in the second horizontal direction, a size of the third lateral protrusion is smaller than a size of the second inserting portion.

9. The magnetic latching relay according to claim 8, wherein: The thickness of the bottom of at least one of the first lateral protrusion, the second lateral protrusion, and the third lateral protrusion gradually decreases toward the bottom end of each protrusion; and / or, In the first horizontal direction, sizes of the first lateral protrusion and the second lateral protrusion are respectively smaller than sizes of the second insertion portion.

10. The magnetic latching relay according to claim 8, wherein: Top ends of the first lateral protrusion, the second lateral protrusion, and the third lateral protrusion are lower than or flush with a bottom surface of the fixing frame facing the magnetic circuit assembly; and / or, The bottom end of the second inserting portion protrudes from or is flush with the bottom ends of the first lateral protrusion, the second lateral protrusion, and the third lateral protrusion.

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