Small size magnetic latching relay for smart home

Abstract

The present invention relates to a small-volume magnetic latching relay for smart homes. It solves the problem of existing relays becoming larger as the load increases. The relay comprises a mounting base, an electromagnetic mounting structure disposed in the middle of the mounting base, an L-shaped armature connection assembly disposed on the electromagnetic mounting structure, the L-shaped armature connection assembly and the electromagnetic mounting structure forming an installation space, an electromagnetic system assembly disposed within the installation space, one end of the L-shaped armature connection assembly being connected to the upper end of the electromagnetic system assembly in an opening and closing manner, an electromagnetic return mechanism disposed on one side of the L-shaped armature connection assembly, one side of the electromagnetic return mechanism being plugged into the L-shaped armature connection assembly, a dynamic spring mechanism disposed on one side of the electromagnetic return mechanism, a static spring mechanism disposed on one side of the dynamic spring mechanism, and an assembly housing disposed circumferentially around the mounting base that encloses the entire device. The present invention has the advantages of simplifying the internal structure of the relay, minimizing the assembly volume of the relay, and extending its applicability.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic equipment, and in particular to a small-volume magnetic latching relay for smart homes. Background Art

[0002] A relay is an electronic control device that performs functions such as automatic regulation, safety protection, and circuit conversion in a circuit. It is widely used in devices such as power protection, automation, motion, remote control, measurement, and communication. As the use of relays becomes more and more extensive, their types are also increasing, and their functions and structures are also different. In the existing technology, there are roughly two ways to assemble the magnetic circuit system. One is to adopt a full-surface press-in structure, that is, the magnetic circuit system is pressed into the housing as a whole. This assembly method requires high precision of parts and is difficult to assemble. The other is to integrate the coil frame part of the magnetic circuit system with the base part, and fix the magnetic circuit system to the base by riveting the yoke and the iron core. The structure of this magnetic circuit system is complex and it is not convenient to process parts. Moreover, under normal circumstances, the larger the load of the relay, the larger the size of the relay. However, due to its relatively large size, this large-load relay cannot be used in the increasingly popular small-volume smart home life, resulting in a limited application field of the relay.

[0003] To address the shortcomings of the existing technology, researchers have conducted extensive research and proposed various solutions. For example, a Chinese patent document discloses a magnetic latching relay [CN201720575566.6], which includes a housing; a base; a static spring; a dynamic spring; a pusher; and a magnetic circuit portion that controls the movement of the pusher and includes an iron core, an upper coil bobbin, a lower coil bobbin, an upper yoke, and a lower yoke. The relay is characterized in that: the upper yoke has an upper mounting portion and an upper arm portion, the upper yoke being fixed to the upper coil bobbin via the upper mounting portion; the lower yoke has a lower mounting portion and a lower arm portion, the lower mounting portion being fixed to the lower coil bobbin and having a protrusion that protrudes axially relative to the lower coil bobbin; the base is provided with a groove portion, the protrusion portion of the lower mounting portion being engaged with the groove portion; and the base is provided with an upper limit bar, the upper limit bar having a first limit surface and a second limit surface, wherein the first limit surface engages with the upper arm portion of the upper yoke, and the second limit surface engages with the upper mounting portion of the upper yoke.

[0004] The above solution solves the problems of difficult assembly and complex structure of existing relays to a certain extent, but the solution still has many shortcomings. For example, the assembled volume is large and cannot be used in small-volume smart homes, which limits the application scope of the relay. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a small-volume magnetic latching relay for smart home use with reasonable design.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: This small-sized magnetic latching relay for smart home use includes a mounting yoke, an electromagnetic mounting structure vertically provided in the middle of the mounting yoke, and an L-shaped armature connecting assembly provided on the electromagnetic mounting structure. The L-shaped armature connecting assembly and the electromagnetic mounting structure together form an installation space, and an electromagnetic system assembly is installed in the installation space. One end of the L-shaped armature connecting assembly located at the upper end of the electromagnetic mounting structure is openably connected to the upper end of the electromagnetic system assembly, and an electromagnetic return mechanism is externally installed on the side of the L-shaped armature connecting assembly away from the electromagnetic system assembly. The side of the electromagnetic return mechanism close to the L-shaped armature connecting assembly is plugged into the side of the L-shaped armature connecting assembly. A dynamic spring mechanism is installed on the side of the electromagnetic return mechanism away from the L-shaped armature connecting assembly, and a static spring mechanism is provided on one side of the dynamic spring mechanism. The mounting yoke is circumferentially provided with an assembly housing that can enclose the electromagnetic mounting structure, electromagnetic system assembly, electromagnetic return mechanism, dynamic spring mechanism, and static spring mechanism. The interaction between the L-shaped armature connecting assembly and the electromagnetic return mechanism not only effectively optimizes the structure of the relay, making the assembled relay smaller, but also maintains low power consumption and high sensitivity.

[0007] In the aforementioned small-sized magnetic latching relay for smart homes, the electromagnetic return mechanism includes a push card with a connection stop in the middle. Two mounting cylinders for mounting a dynamic spring mechanism are radially disposed on one side of the push card. These mounting cylinders are positioned at either end of the connection stop, and the other end of each cylinder, which extends through the connection stop, is connected to a plug-in block. The electromagnetic return mechanism is connected to one side of the L-shaped armature connection assembly via the plug-in block. One side of the electromagnetic return mechanism is connected to the L-shaped armature connection assembly, and the other side is connected to the dynamic spring mechanism. When the L-shaped armature connection assembly generates a force, the electromagnetic return mechanism pushes the dynamic spring mechanism to move synchronously, resulting in good linkage and high sensitivity.

[0008] In the above-mentioned small-sized magnetic latching relay for smart home, the dynamic spring mechanism includes a dynamic spring piece, and a planar dynamic contact is provided on one side of the upper end of the dynamic spring piece. The side of the dynamic spring piece away from the planar dynamic contact is arranged to abut against the upper end of the push card. An L-shaped dynamic spring lead-out pin is installed at the lower end of the dynamic spring piece. The L-shaped dynamic spring lead-out pin is connected to the mounting yoke through a dynamic spring plug-in hole provided on the mounting yoke. The L-shaped dynamic spring lead-out pin includes a first transverse mounting portion and a first longitudinal connecting portion. The first longitudinal connecting portion is radially arranged with the dynamic spring plug-in hole, and the first longitudinal connecting portion passes through the dynamic spring plug-in hole and is located at the lower end of the mounting yoke.

[0009] In the above-mentioned small-sized magnetic latching relay for smart home, the static spring mechanism includes a static spring piece, a spherical static contact is provided on one side of the upper end of the static spring piece, and the spherical static contact and the planar moving contact are arranged opposite to each other, and an L-shaped static spring lead-out pin is installed at the lower end of the static spring piece, and the L-shaped static spring lead-out pin is connected to the mounting yoke through a static spring plug-in hole provided on the mounting yoke, and the L-shaped static spring lead-out pin includes a second transverse mounting portion and a second longitudinal connecting portion, the second longitudinal connecting portion and the static spring plug-in hole are radially arranged, and the second longitudinal connecting portion passes through the static spring plug-in hole and is located at the lower end of the mounting yoke, and the first longitudinal connecting portion and the second longitudinal connecting portion are staggered.

[0010] In the aforementioned small-sized magnetic latching relay for smart homes, the electromagnetic mounting structure includes two opposing yoke plug-in plates, which are vertically mounted on the mounting yoke. The yoke plug-in plates have axially defined yoke insertion slots on their opposing inner sides. A U-shaped partition wall is located on the same side of the yoke plug-in plates, and the height of the U-shaped partition wall is shorter than that of the yoke plug-in plates. The U-shaped partition wall increases the creepage distance between the electromagnetic system and the contacts.

[0011] In the above-mentioned small-volume magnetic holding relay for smart home, the L-shaped armature connection assembly includes a horizontal contact portion, which is arranged at the upper end of the electromagnetic system assembly and located in the installation space, and one end of the horizontal contact portion is connected to a vertical connection portion, the vertical connection portion has a rectangular square groove, and the end of the vertical connection portion close to the horizontal contact portion is provided with a compression spring, one end of the compression spring and the upper end of the horizontal contact portion are arranged to abut against each other, and the other end of the compression spring passes through a limiting hole arranged at the upper end of the vertical connection portion and is located within the angle formed by the horizontal contact portion and the vertical connection portion, and the angle formed between the vertical connection portion and the horizontal contact portion is greater than 90 degrees.

[0012] In the aforementioned small-scale magnetic latching relay for smart homes, the electromagnetic system assembly includes an iron core with a coil disposed circumferentially outside the core. The lower end of the iron core is fixed to a mounting yoke, and the upper end of the iron core is openably connected to a horizontal contact portion. An L-shaped yoke is disposed circumferentially around the coil, one end of the L-shaped yoke being inserted into a yoke insertion slot, and the other end of the L-shaped yoke being disposed at the lower end of the iron core. A magnetic block is disposed between the L-shaped yoke and the coil, and a magnet is disposed between the magnetic block and the L-shaped yoke. The magnet provides a holding force for the L-shaped armature connection assembly, allowing it to remain in either the engaged or disengaged position.

[0013] In the aforementioned compact magnetic latching relay for smart homes, the movable spring has mounting portions on both sides, each with a U-shaped mounting groove corresponding to the mounting cylinder. The lower end of the movable spring has an inclined portion that slopes toward the stationary spring mechanism, and the bottom of the inclined portion is connected to the first transverse mounting portion. The inclined portion facilitates contact between the movable spring and the upper end of the stationary spring, enhancing elasticity.

[0014] In the aforementioned compact magnetic latching relay for smart homes, the height of the static spring insertion hole is greater than that of the dynamic spring insertion hole. A raised stop separates the static and dynamic spring mechanisms from each other, with the stop located on the side of the static spring insertion hole closest to the dynamic spring insertion hole. This stop increases the creepage distance between the static and dynamic spring mechanisms.

[0015] In the above-mentioned small-sized magnetic latching relay for smart home, a ventilation hole is provided at any corner of the upper end of the assembly shell, and the corner of the assembly shell with the ventilation hole forms a recessed mounting platform, and the ventilation hole is vertically arranged on the recessed mounting platform.

[0016] Compared with the existing technology, the advantages of the present invention are: simple structure, low power consumption and high sensitivity. Through the mutual cooperation of the L-shaped armature connection component and the electromagnetic return mechanism, and under the premise of maximizing the requirements of household appliances, it not only effectively optimizes the structure in the relay, but also makes the assembled relay smaller while maintaining a large load, adapting to the application of small-volume smart homes and expanding the scope of use of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the electromagnetic system component of the present invention when it is disconnected from the L-shaped armature connection component;

[0020] Figure 4 It is a schematic structural diagram of the electromagnetic system assembly and the L-shaped armature connection assembly of the present invention when they are closed;

[0021] Figure 5 It is a schematic structural diagram of the L-shaped armature connection assembly of the present invention;

[0022] Figure 6 It is a schematic diagram of the installation yoke structure of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the dynamic spring mechanism of the present invention;

[0024] Figure 8 It is a schematic structural diagram of the static spring mechanism of the present invention;

[0025] Figure 9 It is a structural schematic diagram of the electromagnetic return mechanism of the present invention.

[0026] In the figure, the yoke 1 is installed, the dynamic spring plug-in hole 11, the static spring plug-in hole 12, the cam 13, the electromagnetic installation structure 2, the yoke plug-in plate 21, the yoke plug-in slot 22, the U-shaped partition wall 23, the L-shaped armature connection component 3, the horizontal contact part 31, the vertical connection part 32, the rectangular square groove 33, the compression spring 34, the limit hole 35, the installation space 4, the electromagnetic system component 5, the iron core 51, the coil 52, the L-shaped yoke 53, the magnetic block 54, the magnetic steel 55, the electromagnetic return mechanism 6, the push card 61, and the connection limit Part 611, mounting cylinder 62, plug-in block 63, dynamic spring mechanism 7, dynamic spring piece 71, mounting portion 711, U-shaped mounting groove 712, inclined portion 713, planar dynamic contact 72, L-shaped dynamic spring lead-out pin 73, first transverse mounting portion 731, first longitudinal connecting portion 732, static spring mechanism 8, static spring piece 81, spherical static contact 82, L-shaped static spring lead-out pin 83, second transverse mounting portion 831, second longitudinal connecting portion 832, assembly shell 9, ventilation hole 91, recessed mounting platform 92. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-9 As shown, the small-volume magnetic holding relay for smart home includes a mounting yoke 1, an electromagnetic mounting structure 2 is vertically provided in the middle of the mounting yoke 1, and an L-shaped armature connecting assembly 3 is provided on the electromagnetic mounting structure 2, the L-shaped armature connecting assembly 3 and the electromagnetic mounting structure 2 together constitute a mounting space 4, and an electromagnetic system assembly 5 is installed in the mounting space 4, one end of the L-shaped armature connecting assembly 3 located at the upper end of the electromagnetic mounting structure 2 is openably connected to the upper end of the electromagnetic system assembly 5, and an electromagnetic return mechanism 6 is installed on the outside of the L-shaped armature connecting assembly 3 away from the electromagnetic system assembly 5, the side of the electromagnetic return mechanism 6 close to the L-shaped armature connecting assembly 3 is plugged into the side of the L-shaped armature connecting assembly 3, a dynamic spring mechanism 7 is installed on the side of the electromagnetic return mechanism 6 away from the L-shaped armature connecting assembly 3, and a static spring mechanism 8 is provided on one side of the dynamic spring mechanism 7, and the mounting yoke 1 is circumferentially provided with an assembly shell 9 that can enclose the electromagnetic mounting structure 2, the electromagnetic system assembly 5, the electromagnetic return mechanism 6, the dynamic spring mechanism 7, and the static spring mechanism 8. The electromagnetic return mechanism 6 is pushed by the L-shaped armature connection assembly 3 to cause the dynamic spring mechanism 7 to move synchronously, thereby bringing the dynamic spring mechanism 7 into contact with the static spring mechanism 8. While maintaining product performance, the internal space of the relay is optimized, the relay is made smaller, and the scope of application of the relay is expanded.

[0029] The electromagnetic return mechanism 6 includes a push card 61 with a connection stop 611 in the middle. Two mounting cylinders 62 for mounting the dynamic spring mechanism 7 are radially disposed on one side of the push card 61. The mounting cylinders 62 are positioned at either end of the connection stop 611. The other end of the mounting cylinder 62 extends through the connection stop 611 and connects to a plug-in block 63. The electromagnetic return mechanism 6 is connected to one side of the L-shaped armature connection assembly 3 via the plug-in block 63. The push card 61 is made of a high-temperature-resistant, highly insulating plastic material, providing excellent insulation. The mounting cylinders 62 also function to push the dynamic spring mechanism 7.

[0030] Specifically, the dynamic spring mechanism 7 includes a dynamic spring piece 71, and a planar dynamic contact 72 is provided on one side of the upper end of the dynamic spring piece 71. The side of the dynamic spring piece 71 away from the planar dynamic contact 72 is arranged to abut against the upper end of the push card 61. An L-shaped dynamic spring lead-out pin 73 is installed at the lower end of the dynamic spring piece 71. The L-shaped dynamic spring lead-out pin 73 is connected to the mounting yoke 1 through a dynamic spring plug-in hole 11 provided on the mounting yoke 1. The L-shaped dynamic spring lead-out pin 73 includes a first transverse mounting portion 731 and a first longitudinal connecting portion 732. The first longitudinal connecting portion 732 is radially arranged with the dynamic spring plug-in hole 11, and the first longitudinal connecting portion 732 passes through the dynamic spring plug-in hole 11 and is located at the lower end of the mounting yoke 1. The dynamic reed 71 here is elastic, and the planar dynamic contact 72 is connected to the dynamic reed 71 by riveting, and the first transverse mounting portion 731 is folded by two layers of material and wrapped around the lower end of the dynamic reed 71, and the planar dynamic contact 72 is made of silver alloy material, and the dynamic reed 71 is sheet-shaped and made of copper alloy material.

[0031] Furthermore, the static spring mechanism 8 includes a static spring piece 81, a spherical static contact 82 is provided on one side of the upper end of the static spring piece 81, and the spherical static contact 82 is arranged opposite to the planar moving contact 72, and an L-shaped static spring lead-out pin 83 is installed at the lower end of the static spring piece 81, and the L-shaped static spring lead-out pin 83 is connected to the mounting yoke 1 through the static spring plug-in hole 12 provided on the mounting yoke 1, and the L-shaped static spring lead-out pin 83 includes a second transverse mounting portion 831 and a second longitudinal connecting portion 832, and the second longitudinal connecting portion 832 is radially arranged with the static spring plug-in hole 12, and the second longitudinal connecting portion 832 passes through the static spring plug-in hole 12 and is located at the lower end of the mounting yoke 1, and the first longitudinal connecting portion 732 and the second longitudinal connecting portion 832 are staggered. The static spring piece 81 here is elastic, and the spherical static contact 82 is connected to the static spring piece 81 by riveting. The spherical static contact 82 is made of a silver alloy material, and the static spring piece 81 is sheet-shaped and made of a copper alloy material.

[0032] As can be seen, the electromagnetic mounting structure 2 includes two opposing yoke plug-in plates 21, which are vertically mounted on the mounting yoke 1. Yoke insertion slots 22 are axially defined on opposing inner sides of the yoke plug-in plates 21. A U-shaped partition wall 23 is provided on the same side of the yoke plug-in plates 21, and its height is shorter than that of the yoke plug-in plates 21. The electromagnetic mounting structure 2 is fabricated from a high-temperature-resistant plastic material with excellent insulating properties. The U-shaped partition wall 23 primarily serves to increase the creepage distance between the electromagnetic system assembly 5 and the planar movable contact 72.

[0033] Obviously, the L-shaped armature connection assembly 3 includes a horizontal contact portion 31, which is arranged at the upper end of the electromagnetic system assembly 5 and located in the installation space 4, and one end of the horizontal contact portion 31 is connected to the vertical connection portion 32, and the vertical connection portion 32 has a rectangular square groove 33, and the vertical connection portion 32 is provided with a compression spring 34 at one end close to the horizontal contact portion 31, one end of the compression spring 34 is arranged to abut against the upper end of the horizontal contact portion 31, and the other end of the compression spring 34 passes through a limiting hole 35 arranged at the upper end of the vertical connection portion 32 and is located within the angle formed by the horizontal contact portion 31 and the vertical connection portion 32, and the angle formed between the vertical connection portion 32 and the horizontal contact portion 31 is greater than 90 degrees. When the horizontal contact portion 31 is attracted to the upper end of the electromagnetic system component 5, the vertical connection portion 32 moves toward the side away from the electromagnetic system component 5 and pushes the electromagnetic return mechanism 6 to move so that the planar moving contact 72 and the spherical static contact 82 contact each other. When the horizontal contact portion 31 is disconnected from the upper end of the electromagnetic system component 5, the vertical connection portion 32 approaches the side of the electromagnetic system component 5 and drives the electromagnetic return mechanism 6 to move so that the planar moving contact 72 and the spherical static contact 82 are disconnected from each other.

[0034] Furthermore, the electromagnetic system assembly 5 includes an iron core 51, with a coil 52 disposed circumferentially outside the iron core 51. The lower end of the iron core 51 is fixed to the mounting yoke 1, and the upper end of the iron core 51 is openably connected to the horizontal contact portion 31. The coil 52 is circumferentially provided with an L-shaped yoke 53, one end of which is inserted into the yoke insertion slot 22, and the other end of the L-shaped yoke 53 is disposed at the lower end of the iron core 51. A magnetic block 54 is disposed between the L-shaped yoke 53 and the coil 52, and a magnet 55 is disposed between the magnetic block 54 and the L-shaped yoke 53. The coil 52 here has single and double coil control, and the dielectric withstand voltage between the coil 52 and the planar movable contact 72 and the spherical static contact 82 is relatively high. The magnet 55 also provides retention force for the L-shaped armature connection assembly 3.

[0035] Preferably, the movable spring piece 71 has mounting portions 711 on both sides, and each mounting portion 711 has a U-shaped mounting groove 712 corresponding to the mounting cylinder 62. The lower end of the movable spring piece 71 is provided with an inclined portion 713 inclined toward the static spring mechanism 8, and the bottom of the inclined portion 713 is connected to the first horizontal mounting portion 731.

[0036] Specifically, the static spring mechanism 8 is separated from the lower side of the dynamic spring mechanism 7 by a raised stop 13. The height of the static spring insertion hole 12 is greater than that of the dynamic spring insertion hole 11. The raised stop 13 is located on the side of the static spring insertion hole 12 closer to the dynamic spring insertion hole 11. The raised stop 13 increases the creepage distance between the planar dynamic contact 72 and the spherical static contact 82.

[0037] More specifically, a vent hole 91 is provided at any corner of the upper end of the assembly housing 9. The corner of the assembly housing 9 where the vent hole 91 is provided forms a recessed mounting platform 92, with the vent hole 91 positioned perpendicularly above the recessed mounting platform 92. The assembly housing 9 and the mounting yoke 1 are sealed with glue. If the vent hole 91 is not hot-sealed, the product is a solder-resistant product; if it is hot-sealed, the product is a plastic-sealed product. The assembled assembly housing 9 measures 20.2 mm × 10.0 mm × 15.8 mm.

[0038] The principle of this embodiment is that the electromagnetic system assembly 5 generates a magnetic attraction force on the horizontal contact portion 31 on the L-shaped armature connection assembly 3, causing the horizontal contact portion 31 to be attracted to the upper end of the electromagnetic system assembly 5. At this time, the vertical connection portion 32 moves away from the electromagnetic system assembly 5 and drives the electromagnetic return mechanism 6 to move, causing the planar movable contact 72 and the spherical static contact 82 to contact each other. When the horizontal contact portion 31 is disconnected from the upper end of the electromagnetic system assembly 5, the vertical connection portion 32 moves toward the electromagnetic system assembly 5 and drives the electromagnetic return mechanism 6 to move, causing the planar movable contact 72 to disconnect from the spherical static contact 82. This arrangement optimizes the internal structure of the relay while maximizing the requirements of household appliances, reducing the overall assembly volume of the relay, making the relay suitable for smaller smart home applications and expanding the relay's application areas.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0040] Although this article uses more installation yoke 1, dynamic spring plug-in hole 11, static spring plug-in hole 12, convex block 13, electromagnetic installation structure 2, yoke plug-in plate 21, yoke plug-in slot 22, U-shaped partition wall 23, L-shaped armature connection component 3, horizontal contact part 31, vertical connection part 32, rectangular square groove 33, compression spring 34, limit hole 35, installation space 4, electromagnetic system component 5, iron core 51, coil 52, L-shaped yoke 53, magnetic block 54, magnetic steel 55, electromagnetic return mechanism 6, push card 61, connection limit part 611, installation The terms mounting cylinder 62, plug-in block 63, dynamic spring mechanism 7, dynamic spring piece 71, mounting portion 711, U-shaped mounting groove 712, inclined portion 713, planar dynamic contact 72, L-shaped dynamic spring lead-out leg 73, first transverse mounting portion 731, first longitudinal connecting portion 732, static spring mechanism 8, static spring piece 81, spherical static contact 82, L-shaped static spring lead-out leg 83, second transverse mounting portion 831, second longitudinal connecting portion 832, assembly housing 9, vent hole 91, and recessed mounting platform 92 are used herein, but other terms are not excluded. These terms are used merely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation would be contrary to the spirit of the present invention.

Claims

1. A small-volume magnetic latching relay for smart home, comprising a mounting yoke (1), wherein an electromagnetic mounting structure (2) is vertically provided in the middle of the mounting yoke (1), and an L-shaped armature connecting assembly (3) is provided on the electromagnetic mounting structure (2), wherein the L-shaped armature connecting assembly (3) and the electromagnetic mounting structure (2) together form a mounting space (4), and an electromagnetic system assembly (5) is installed in the mounting space (4), wherein one end of the L-shaped armature connecting assembly (3) located at the upper end of the electromagnetic mounting structure (2) is openably connected to the upper end of the electromagnetic system assembly (5), and an electromagnetic return mechanism (6) is externally installed on a side of the L-shaped armature connecting assembly (3) away from the electromagnetic system assembly (5), and the side of the electromagnetic return mechanism (6) close to the L-shaped armature connecting assembly (3) is plugged into one side of the L-shaped armature connecting assembly (3), characterized in that: The electromagnetic return mechanism (6) is provided with a dynamic spring mechanism (7) on the side away from the L-shaped armature connection assembly (3), and a static spring mechanism (8) is provided on one side of the dynamic spring mechanism (7). The mounting yoke (1) is provided with an assembly shell (9) in the circumferential direction, which can enclose the electromagnetic mounting structure (2), the electromagnetic system assembly (5), the electromagnetic return mechanism (6), the dynamic spring mechanism (7), and the static spring mechanism (8). The electromagnetic return mechanism (6) includes a push card (61), the middle part of the push card (61) has a connection limit portion (611), and one side of the push card (61) is provided with two radially arranged springs for The mounting cylinder (62) of the movable spring mechanism (7) is installed. The mounting cylinder (62) is respectively arranged at both ends of the connection limit portion (611), and the other end of the mounting cylinder (62) passes through the connection limit portion (611) and is connected to a plug-in block (63). The electromagnetic return mechanism (6) is connected to one side of the L-shaped armature connection component (3) through the plug-in block (63); the movable spring mechanism (7) includes a movable spring piece (71), and a plane movable contact (72) is provided on one side of the upper end of the movable spring piece (71). The side of the movable spring piece (71) away from the plane movable contact (72) is arranged to abut against the upper end of the push card (61). The lower end of the movable spring piece (71) is provided with an L-shaped movable spring lead-out pin (73), the L-shaped movable spring lead-out pin (73) is connected to the mounting yoke (1) through the movable spring plug-in hole (11) provided on the mounting yoke (1), and the L-shaped movable spring lead-out pin (73) includes a first transverse mounting portion (731) and a first longitudinal connecting portion (732), the first longitudinal connecting portion (732) and the movable spring plug-in hole (11) are radially arranged, and the first longitudinal connecting portion (732) passes through the movable spring plug-in hole (11) and is located at the lower end of the mounting yoke (1); the planar movable contact 72 is connected to the movable spring piece (71) by riveting. 1) connected together, and the first transverse mounting portion (731) is formed by folding two layers of material and wrapped around the lower end of the moving spring (71), and the planar moving contact (72) is made of a silver alloy material, and the moving spring (71) is sheet-shaped and made of a copper alloy material; the moving spring (71) has mounting portions (711) on both sides, and the mounting portions (711) have U-shaped mounting grooves (712) corresponding to the mounting cylinder (62), and the lower end of the moving spring (71) is provided with an inclined portion (713) inclined toward the static spring mechanism (8), and the bottom of the inclined portion (713) is connected to the first transverse mounting portion (731).

2. The small-volume magnetic latching relay for smart home according to claim 1, characterized in that: The static spring mechanism (8) includes a static spring piece (81), a spherical static contact (82) is provided on one side of the upper end of the static spring piece (81), and the spherical static contact (82) is arranged opposite to the planar moving contact (72), and an L-shaped static spring lead-out pin (83) is installed at the lower end of the static spring piece (81), and the L-shaped static spring lead-out pin (83) is connected to the mounting yoke (1) through a static spring plug-in hole (12) provided on the mounting yoke (1), and the L-shaped static spring lead-out pin (83) includes a second transverse mounting portion (831) and a second longitudinal connecting portion (832), the second longitudinal connecting portion (832) and the static spring plug-in hole (12) are radially arranged, and the second longitudinal connecting portion (832) passes through the static spring plug-in hole (12) and is located at the lower end of the mounting yoke (1), and the first longitudinal connecting portion (732) and the second longitudinal connecting portion (832) are staggered.

3. The small-volume magnetic latching relay for smart home according to claim 1, characterized in that: The electromagnetic mounting structure (2) comprises two yoke plug-in plates (21) arranged opposite to each other, and the yoke plug-in plates (21) are vertically arranged on the mounting yoke (1), and the yoke plug-in plates (21) are axially provided with yoke insertion grooves (22) on the opposite inner sides, and a U-shaped partition wall (23) is provided on the same side of the yoke plug-in plates (21), and the height of the U-shaped partition wall (23) is less than the height of the yoke plug-in plates (21).

4. The small-volume magnetic latching relay for smart home use according to claim 3, characterized in that: The L-shaped armature connection assembly (3) includes a horizontal contact portion (31), the horizontal contact portion (31) is arranged at the upper end of the electromagnetic system assembly (5) and is located in the installation space (4), and one end of the horizontal contact portion (31) is connected to the vertical connection portion (32), the vertical connection portion (32) has a rectangular square groove (33), and the vertical connection portion (32) is provided with a compression spring (34) at one end close to the horizontal contact portion (31), one end of the compression spring (34) and the upper end of the horizontal contact portion (31) are arranged to abut against each other, and the other end of the compression spring (34) passes through a limiting hole (35) arranged at the upper end of the vertical connection portion (32) and is located within the angle formed by the horizontal contact portion (31) and the vertical connection portion (32), and the angle formed between the vertical connection portion (32) and the horizontal contact portion (31) is greater than 90 degrees.

5. The small-sized magnetic latching relay for smart home use according to claim 4, characterized in that: The electromagnetic system component (5) includes an iron core (51), a coil (52) is provided on the outer side of the iron core (51), and the lower end of the iron core (51) is fixed on the mounting yoke (1), and the upper end of the iron core (51) is connected to the horizontal contact portion (31) in an openable and closable manner. The coil (52) is provided with an L-shaped yoke (53) in the circumferential direction, one end of the L-shaped yoke (53) is inserted into the yoke insertion slot (22), and the other end of the L-shaped yoke (53) is arranged at the lower end of the iron core (51), and a magnetic block (54) is provided between the L-shaped yoke (53) and the coil (52), and a magnetic steel (55) is provided between the magnetic block (54) and the L-shaped yoke (53).

6. The small-volume magnetic latching relay for smart home use according to claim 2, characterized in that: The height of the static spring plug-in hole (12) is greater than the height of the dynamic spring plug-in hole (11), and the static spring mechanism (8) is separated from the lower side of the dynamic spring mechanism (7) by a convex block (13), and the convex block (13) is arranged on a side of the static spring plug-in hole (12) close to the dynamic spring plug-in hole (11).

7. The small-sized magnetic latching relay for smart home use according to claim 1, characterized in that: An air vent (91) is provided at any corner of the upper end of the assembly shell (9), and a corner of the assembly shell (9) provided with the air vent (91) forms a recessed mounting platform (92), and the air vent (91) is vertically arranged on the recessed mounting platform (92).

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