A magnetic latching relay

Abstract

The application relates to a magnetic latching relay, and belongs to the technical field of relays. The magnetic latching relay comprises static contacts and dynamic contacts; a push block for driving the dynamic contacts to contact or separate from the static contacts; an elastic member comprising a connecting plate connected with the push block and side plates arranged at two ends of the connecting plate respectively, the dynamic contacts are floatingly installed on the side plates in the direction of approaching or moving away from the static contacts, and an elastic pressing head for pressing the dynamic contacts towards the static contacts is arranged on the connecting plate. Therefore, when the push block drives the dynamic contacts to contact the static contacts, the dynamic contacts will be tightly pressed on the static contacts under the elastic force of the elastic pressing head, thereby improving the closing maintaining force and the contact stability of the dynamic contacts and the static contacts; in addition, the elastic force of the elastic pressing head directly acts on the dynamic contacts, the contact bounce during closing or vibration can be inhibited, the contact ablation is prevented from being intensified, and therefore the overall reliability and service life of the relay are effectively improved.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a magnetic latching relay. Background Technology

[0002] As a core component of circuit control, relays face higher requirements for reliability and service life. Under conditions of frequent switching, high current loads, and strong vibration, the contact stability of the moving and stationary contacts directly affects the relay's performance. Insufficient contact pressure or weakened holding force during contact closure can easily lead to increased contact resistance, intensified arc erosion, and consequently, contact adhesion and abnormal temperature rise.

[0003] In related technologies, the improvement of contact closure holding force is mainly achieved through the following directions: First, optimizing contact materials and surface treatment processes, such as using silver-based alloy contacts or adding precious metal plating (such as gold plating or palladium plating) to reduce contact resistance; Second, improving contact structure design, such as using hemispherical contacts to increase the contact area, or dispersing the current load through a parallel structure of double contacts; Third, increasing the closing thrust of the drive mechanism on the contacts by adjusting electromagnetic system parameters (such as increasing the number of coil turns and optimizing the armature stroke).

[0004] However, the aforementioned technologies still have significant limitations: First, while material optimization can improve conductivity, precious metal plating is expensive and easily lost due to arc erosion, resulting in insufficient long-term stability; second, while complex contact structures (such as dual-contact designs) can increase current-carrying capacity, they lead to higher assembly precision requirements and make it difficult to suppress contact bounce under high-frequency vibrations; finally, simply relying on the electromagnetic system to increase the closing thrust may increase the size and power consumption of the relay, contradicting the trends of miniaturization and energy saving. Therefore, it is difficult to meet the high stability requirements under extreme operating conditions. Summary of the Invention

[0005] In view of the shortcomings or deficiencies mentioned in the background art, the present application provides a magnetic latching relay that can improve the closing holding force and contact stability of the contacts.

[0006] This application provides a magnetic latching relay, including:

[0007] A conductor unit, comprising a stationary contact and a moving contact that cooperate with each other;

[0008] A pushing unit includes a pushing block for driving the moving contact to contact or separate from the stationary contact;

[0009] The elastic element includes a connecting plate connected to the push block and side plates respectively disposed at both ends of the connecting plate. The moving contact is floatingly mounted on the side plate in a direction approaching or away from the stationary contact. The connecting plate is provided with an elastic pressure head that presses the moving contact toward the stationary contact.

[0010] In some embodiments, the moving contact is connected to a rotating shaft, and the side plate is provided with a strip hole for matching the rotating shaft.

[0011] In some embodiments, a rotating shaft is connected to the side plate, and an ear plate is connected to the moving contact, the ear plate being provided with a strip hole for matching the rotating shaft.

[0012] In some embodiments, the connecting plate is provided with a locking port, the push block is provided with a plug slot that matches the connecting plate, and a locking head that matches the locking port.

[0013] In some embodiments, the resilient pressure head includes a bent section connected to the connecting plate and a resilient arm connected to the bent section, wherein an arcuate section for abutting the moving contact is connected to one end of the resilient arm away from the bent section.

[0014] In some embodiments, one end of each of the two side plates extends outward to form a baffle for laterally limiting the moving contact.

[0015] In some embodiments, the side plate is integrally formed with the connecting plate, and the elastic pressure head is integrally formed with the connecting plate.

[0016] In some embodiments, a housing is also included for mounting the conductor unit and the actuating unit, with the end of the moving contact away from the elastic element rotatably connected to the housing;

[0017] The pushing unit further includes an armature assembly disposed within the housing and rotatably connected to the pushing block, and an electromagnetic assembly for driving the armature assembly to swing.

[0018] In some embodiments, the moving contact includes a conductive plate hinged to the housing and a lead-out pin fixed to the housing. The lead-out pin is electrically connected to the conductive plate via a wire, and a moving contact is provided at the end of the conductive plate away from the lead-out pin.

[0019] The stationary contact assembly includes an inlet pin fixed to the housing, and the inlet pin is provided with a stationary contact for cooperating with the moving contact.

[0020] In some embodiments, the housing is equipped with a spring sheet for buffering and limiting the push block, and an arc-extinguishing grid arranged near the stationary contact and the moving contact.

[0021] The beneficial effects of the technical solution provided in this application include:

[0022] This application provides a magnetic latching relay, which includes a conductor unit comprising a stationary contact and a moving contact that cooperate with each other; a pushing unit comprising a pushing block for driving the moving contact to contact or separate from the stationary contact; and an elastic element comprising a connecting plate connected to the pushing block and side plates respectively disposed at both ends of the connecting plate. The moving contact is floatingly mounted on the side plates in a direction approaching or away from the stationary contact, and the connecting plate is provided with an elastic pressure head for pressing the moving contact toward the stationary contact.

[0023] Therefore, when the push block of the push unit drives the moving contact to contact the stationary contact, the moving contact, which is floating on the side plate, will press against the stationary contact under the elastic force of the elastic pressure head, thereby improving the closing retention force and contact stability of the moving contact and the stationary contact. In addition, the elastic force of the elastic pressure head acts directly on the moving contact, which can also suppress the contact bounce during closing or vibration, prevent the contact erosion from aggravating, and thus effectively improve the overall reliability and service life of the relay. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the relay in the closed state according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the relay in the open state according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram showing the connection between the elastic element and the moving contact in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the elastic element in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the moving contact in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of the elastic element according to another embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the structure of the moving contact according to another embodiment of this application;

[0032] Figure 8This is a schematic diagram of the connection of the push block in an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of the structure of the elastic element according to another embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the arc-extinguishing grid according to an embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the structure of the static magnetic conductor according to an embodiment of this application;

[0036] Figure 12 This is a schematic diagram of the structure of a relay according to an embodiment of this application.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 1. Stationary contact; 101. Inlet pin; 102. Stationary contact; 2. Moving contact; 21. Conductive plate; 22. Moving magnetic conductor; 23. Moving contact; 24. Fixing plate; 25. Ear plate; 26. Outlet pin; 3. Push block; 31. Insertion slot; 32. Locking head; 4. Elastic element; 41. Connecting plate; 411. Locking opening; 42. Side plate; 421. Baffle; 43. Elastic pressure head; 431. Bending section; 432. Elastic arm; 433. Arc section; 5. Rotating shaft; 6. Strip hole; 7. Housing; 8. Armature assembly; 9. Electromagnetic assembly; 10. Spring; 11. Arc extinguishing grid; 12. Stationary magnetic conductor; 121. First magnetic conductor; 122. Second magnetic conductor. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In view of the shortcomings or deficiencies mentioned in the background art, the present application provides a magnetic latching relay that can improve the closing holding force and contact stability of the contacts.

[0041] See Figures 1 to 5 As shown, this application embodiment provides a magnetic latching relay, including:

[0042] A conductor unit, comprising a stationary contact 1 and a moving contact 2 that cooperate with each other;

[0043] The pushing unit includes a pushing block 3 for driving the moving contact 2 to contact or separate from the stationary contact 1;

[0044] The elastic element 4 includes a connecting plate 41 connected to the push block 3, and side plates 42 respectively disposed at both ends of the connecting plate 41. The moving contact 2 is floatingly mounted on the side plate 42 in the direction of approaching or moving away from the stationary contact 1. The connecting plate 41 is provided with an elastic pressure head 43 that presses the moving contact 2 toward the stationary contact 1.

[0045] The magnetic latching relay of this application embodiment is provided with an elastic element 4, which connects the push block 3 and the moving contact 2. The connecting plate 41 of the elastic element 4 is fixed on the push block 3, and the moving contact 2 is floatingly mounted on the two side plates 42 of the elastic element 4. When the push block 3 drives the moving contact 2 to contact and close with the stationary contact 1 through the elastic element 4, the elastic force of the elastic pressure head 43 on the elastic element 4 can act on the stationary contact 1 through the moving contact 2, providing the moving contact 2 with a clamping force to press the stationary contact 1, thereby improving the closing retention force and contact stability between the contacts.

[0046] Specifically, when the push block 3 of the push unit drives the moving contact 2 to contact the stationary contact 1, the moving contact 2, which is floating on the side plate 42, will press against the stationary contact 1 under the elastic force of the elastic pressure head 43, thereby improving the closing retention force and contact stability of the moving contact 2 and the stationary contact 1. In addition, the elastic force of the elastic pressure head 43 acts directly on the moving contact 2, which can also suppress the contact bounce during closing or vibration, prevent the contact erosion from aggravating, and thus effectively improve the overall reliability and service life of the relay.

[0047] For example, in this embodiment, the elastic element 4 is integrally stamped and bent from a stainless steel sheet. By opening a groove or sliding hole on the side plate 42 of the elastic element 4, and cooperating with the sliding shaft fixedly connected to the moving contact 2, the moving contact 2 can float relative to the side plate 42 without detaching from the side plate 42. In other embodiments, a flexible short rope can be fixedly connected between the side plate 42 and the moving contact 2, which can also achieve the floating of the moving contact 2 relative to the side plate 42.

[0048] In some alternative embodiments: see Figures 3 to 5 As shown, this application embodiment provides a magnetic latching relay, wherein the moving contact 2 of the magnetic latching relay is connected to a rotating shaft 5, and the side plate 42 is provided with a strip hole 6 for matching the rotating shaft 5.

[0049] The moving contact 2 in this embodiment includes a conductive plate 21 and a moving contact 23 fixedly connected to one end of the conductive plate 21. A rotating shaft 5 is fixedly connected to the end where the moving contact 23 is located. The other end of the conductive plate 21 is hinged to the housing 7 of the relay. A strip hole 6 is provided on the side plate 42 of the elastic member 4. The rotating shaft 5 is installed in the strip hole 6, which can realize the rotation and sliding connection between the conductive plate 21 and the side plate 42, so that the elastic pressure head 43 of the elastic member 4 can press the conductive plate 21 along the extension direction of the strip hole 6.

[0050] For example, this embodiment adopts a dual-contact structure. The moving contact 2 is provided with two conductive plates 21 located in the same plane, and the two conductive plates 21 are fixedly connected by a fixing plate 24. The strip hole 6 on the side plate 42 of the elastic member 4 is formed by stamping, and the edge of the strip hole 6 is integrally formed with an annular outward flange. The annular outward flange can increase the contact mating surface with the rotating shaft 5, thereby improving the connection stability between the side plate 42 and the conductive plate 21.

[0051] In some alternative embodiments: see Figure 6 and Figure 7 As shown, this application embodiment provides a magnetic latching relay. The side plate 42 of the magnetic latching relay is connected to a rotating shaft 5, and the moving contact 2 is connected to an ear plate 25. The ear plate 25 is provided with a strip hole 6 for matching the rotating shaft 5.

[0052] The moving contact 2 in this embodiment includes a conductive plate 21 and a moving contact 23 fixedly connected to one end of the conductive plate 21. An ear plate 25 is integrally formed at the end where the moving contact 23 is located. A strip hole 6 is provided on the ear plate 25. The other end of the conductive plate 21 is hinged to the housing 7 of the relay. A rotating shaft 5 is fixedly connected to the side plate 42 of the elastic member 4. The rotating shaft 5 is installed in the strip hole 6, which can realize the rotation and sliding connection between the conductive plate 21 and the side plate 42, so that the elastic pressure head 43 of the elastic member 4 can press the conductive plate 21 along the extension direction of the strip hole 6.

[0053] In some alternative embodiments: see Figure 4 and Figure 8 As shown, this application embodiment provides a magnetic latching relay. The connecting plate 41 of the magnetic latching relay is provided with a locking port 411, the push block 3 is provided with a plug-in slot 31 that matches the connecting plate 41, and a locking head 32 that matches the locking port 411.

[0054] The push block 3 in this embodiment is integrally injection molded from plastic. The end of the push block 3 is integrally formed with a central stop and side stops located at both ends of the central stop. Two pressure blocks located between the two side stops are integrally formed on the central stop. The locking head 32 is integrally formed on the push block 3 and located between the two side stops. A U-shaped hole is provided on the connecting plate 41 of the elastic member 4, and the U-shaped hole forms a locking opening 411.

[0055] Specifically, as the pushing block 3 is pushed between the two side stops along its end face and abuts against the central stop, the corresponding local area inside the U-shaped hole on the connecting plate 41 undergoes bending deformation and resets, allowing the locking head 32 to engage with the locking opening 411. The side stops and the pressure block cooperate to limit the left and right movement of the side plate 42, the pressure block and the pushing block 3 cooperate to limit the up and down movement of the connecting plate 41, and the locking head 32 and the central stop cooperate to limit the front and rear movement of the connecting plate 41.

[0056] In some alternative embodiments: see Figure 6 As shown, this application embodiment provides a magnetic latching relay. The elastic pressure head 43 of the magnetic latching relay includes a bent section 431 connected to a connecting plate 41 and an elastic arm 432 connected to the bent section 431. One end of the elastic arm 432 away from the bent section 431 is connected to an arc-shaped section 433 for abutting against the moving contact 2.

[0057] The elastic pressure head 43 of this application embodiment includes an integrally formed bending section 431, an elastic arm 432, and an arc-shaped section 433. The bending section 431 bends between the two side plates 42, so that the elastic arm 432 can extend between the two side plates 42. The arc-shaped section 433 facilitates contact with the moving contact 2, ensuring that during the movement of the moving contact 2, the elastic force of the elastic arm 432 can act on the moving contact 2 at all times through the arc-shaped section 433.

[0058] In some alternative embodiments: see Figure 9 As shown, this application embodiment provides a magnetic latching relay, wherein one end of each of the two side plates 42 of the magnetic latching relay extends outward to form a baffle 421 for laterally limiting the moving contact 2.

[0059] The moving contact 2 in this embodiment includes a conductive plate 21, on which a moving magnetic body 22 is fixed to cover the middle section of the conductive plate 21. A baffle 421 extends outward from one end of the side plate 42 and contacts the moving magnetic body 22, thereby enabling lateral positioning of the moving contact 2 and preventing the moving contact 2 from moving laterally.

[0060] In some alternative embodiments: see Figure 4 As shown, this application embodiment provides a magnetic latching relay, in which the side plate 42 and the connecting plate 41 are integrally formed, and the elastic pressure head 43 is integrally formed with the connecting plate 41.

[0061] In this embodiment, the elastic element 4 is integrally stamped and bent from a stainless steel sheet. The side plate 42 and the connecting plate 41 are perpendicular to each other. The elastic pressure head 43 is bent and extends between the two side plates 42. The connecting plate 41 is provided with a locking hole 411, and the side plate 42 is provided with a strip hole 6, so that the elastic element 4 can connect the pushing block 3 and the moving contact 2, and can also squeeze the moving contact 2 towards the stationary contact 1.

[0062] In some alternative embodiments: see Figures 1 to 12 As shown, this application embodiment provides a magnetic latching relay, which further includes a housing 7 for mounting the conductor unit and the push unit, and the end of the moving contact 2 away from the elastic member 4 is rotatably connected to the housing 7;

[0063] The pushing unit also includes an armature assembly 8 disposed inside the housing 7 and rotatably connected to the pushing block 3, and an electromagnetic assembly 9 for driving the armature assembly 8 to swing.

[0064] The housing 7 in this embodiment includes an outer shell and a cover. The outer shell has an internal cavity. The conductor unit and the push unit are both installed inside the outer shell. The moving contact 2 includes a conductive plate 21 and a moving contact 23 fixedly connected to one end of the conductive plate 21. A hinge is fixedly connected to the end of the conductive plate 21 away from the moving contact 23. A mounting plate is fixed inside the outer shell. The hinges on both sides are respectively engaged on the outer shell and the mounting plate, thereby realizing a rotational connection.

[0065] An electromagnetic component 9 is also fixedly installed inside the housing, and a support plate is also fixedly installed inside the housing. The two ends of the armature component 8 are rotatably connected to the support plate and the housing, respectively. The swing arm of the armature component 8 is inserted into the push block 3 and forms a rotatable connection with the push block 3. After the electromagnetic component 9 is energized, it can drive the armature component 8 to swing through the magnetic field, thereby driving the push block 3 to move closer to or away from the stationary contact 1.

[0066] In some alternative embodiments: see Figures 1 to 12 As shown, this application embodiment provides a magnetic latching relay. The moving contact 2 of the magnetic latching relay includes a conductive plate 21 hinged to the housing 7 and a lead-out pin 26 fixed on the housing 7. The lead-out pin 26 is electrically connected to the conductive plate 21 through a wire. A moving contact 23 is provided at the end of the conductive plate 21 away from the lead-out pin 26.

[0067] The stationary contact 1 assembly includes an inlet pin 101 fixed on the housing 7, and a stationary contact 102 for engaging with the moving contact 23 is provided on the inlet pin 101.

[0068] In this embodiment of the application, both the output pin 26 and the input pin 101 are fixed on the housing and partially located inside the housing. The output pin 26 is electrically connected to the conductive plate 21 through a wire. A moving contact 23 is fixedly connected to one end of the conductive plate 21 away from the output pin 26. A stationary contact 102 facing the moving contact 23 is fixedly connected to the input pin 101.

[0069] In some alternative embodiments: see Figures 1 to 12As shown, this application embodiment provides a magnetic latching relay, in which a spring 10 for buffering and limiting push block 3 is installed in the housing 7 of the magnetic latching relay, and an arc extinguishing grid 11 is arranged near the stationary contact 102 and the moving contact 23.

[0070] In this embodiment, a spring sheet 10 is installed inside the housing 7. The spring sheet 10 is located at the end of the push block 3 away from the stationary contact 102. When the stationary contact 102 and the moving contact 23 are separated, the push block 3 approaches and squeezes the spring sheet 10. The spring sheet 10 can provide elasticity to buffer the impact force and prevent the push block 3 and the armature assembly 8 from being damaged.

[0071] In addition, an arc-extinguishing grid 11 is installed inside the housing 7, which is arranged near the stationary contact 102 and the moving contact 23. The distance between the arc-extinguishing grid 11 and the stationary contact 102 and the moving contact 23 is within a preset range, so that the arc-extinguishing grid 11 can capture and extinguish the electric arc of the stationary contact 102 and the moving contact 23.

[0072] For example, in this embodiment, a moving magnetic conductor 22 that wraps around the middle section of the conductive plate 21 is also fixed on the conductive plate 21. A corresponding stationary magnetic conductor 12 is fixed inside the outer casing. The stationary magnetic conductor 12 includes a first magnetic conductor 121 that is snapped into the casing 7, and a second magnetic conductor 122 fixed on the first magnetic conductor 121 and arranged toward the moving magnetic conductor 22. When the stationary contact 102 and the moving contact 23 come into contact with each other, the moving magnetic conductor 22 and the stationary magnetic conductor 12 can attract each other, increasing the closing holding force for the moving contact 23 and the stationary contact 102, and maintaining the stable state of the contact closure of the moving contact 23 and the stationary contact 102.

[0073] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0074] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A magnetic latching relay, characterized in that, include: A conductor unit comprising a stationary contact (1) and a moving contact (2) that cooperate with each other; The pushing unit includes a pushing block (3) for driving the moving contact (2) to contact or separate from the stationary contact (1); The elastic element (4) includes a connecting plate (41) connected to the push block (3) and side plates (42) respectively disposed at both ends of the connecting plate (41). The moving contact (2) is floatingly mounted on the side plate (42) in a direction close to or away from the stationary contact (1). The connecting plate (41) is provided with an elastic pressure head (43) that presses the moving contact (2) toward the stationary contact (1).

2. The magnetic latching relay as described in claim 1, characterized in that: The moving contact (2) is connected to a rotating shaft (5), and the side plate (42) is provided with a strip hole (6) for matching the rotating shaft (5).

3. The magnetic latching relay as described in claim 1, characterized in that: A rotating shaft (5) is connected to the side plate (42), and an ear plate (25) is connected to the moving contact (2). The ear plate (25) is provided with a strip hole (6) for matching the rotating shaft (5).

4. The magnetic latching relay as described in claim 1, characterized in that: The connecting plate (41) is provided with a locking port (411), the pushing block (3) is provided with a plug-in groove (31) that matches the connecting plate (41), and a locking head (32) that matches the locking port (411).

5. The magnetic latching relay as described in claim 1, characterized in that: The elastic pressure head (43) includes a bent section (431) connected to the connecting plate (41) and an elastic arm (432) connected to the bent section (431). The end of the elastic arm (432) away from the bent section (431) is connected to an arc-shaped section (433) for abutting the moving contact (2).

6. The magnetic latching relay as described in claim 1, characterized in that: One end of each of the two side plates (42) extends outward to form a baffle (421) for laterally limiting the moving contact (2).

7. The magnetic latching relay as described in claim 1, characterized in that: The side plate (42) is integrally formed with the connecting plate (41), and the elastic pressure head (43) is integrally formed with the connecting plate (41).

8. The magnetic latching relay as described in claim 1, characterized in that: It also includes a housing (7) for mounting the conductor unit and the push unit, wherein the end of the moving contact (2) away from the elastic member (4) is rotatably connected to the housing (7); The pushing unit further includes an armature assembly (8) disposed inside the housing (7) and rotatably connected to the pushing block (3), and an electromagnetic assembly (9) for driving the armature assembly (8) to swing.

9. The magnetic latching relay as described in claim 8, characterized in that: The moving contact (2) includes a conductive plate (21) hinged to the housing (7) and a lead-out pin (26) fixed on the housing (7). The lead-out pin (26) is electrically connected to the conductive plate (21) through a wire. A moving contact (23) is provided at one end of the conductive plate (21) away from the lead-out pin (26). The stationary contact (1) assembly includes an inlet pin (101) fixed on the housing (7), and the inlet pin (101) is provided with a stationary contact (102) for cooperating with the moving contact (23).

10. The magnetic latching relay as described in claim 9, characterized in that: The housing (7) is equipped with a spring piece (10) for buffering and limiting the push block (3), and an arc-extinguishing grid (11) arranged near the stationary contact (102) and the moving contact (23).

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