Magnetic latching relay

Abstract

The application relates to a magnetic latching relay, belonging to the technical field of low-voltage electrical appliances. The magnetic latching relay comprises a first static guide electrode plate, a second static guide electrode plate, a third static guide electrode plate, a transmission mechanism and a movable contact bridge connected to the transmission mechanism, wherein the movable contact bridge comprises a first movable contact and a second movable contact located on opposite sides of the transmission mechanism; the transmission mechanism is driven to rotate, and the transmission mechanism can drive the first movable contact and the second movable contact to move, so that the first movable contact connects the first static guide electrode plate and the third static guide electrode plate to form a first conductive loop or the second movable contact connects the second static guide electrode plate and the third static guide electrode plate to form a second conductive loop. The magnetic latching relay is small in size and can realize multi-loop control.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically, to a magnetic latching relay. Background Technology

[0002] A magnetic latching relay is a low-energy, stable, and reliable bistable relay. When controlling the contact switching, a pulse drive signal with variable polarity is input to the two ends of a single or double coil to excite the coil, thus enabling the magnetic latching relay to connect or disconnect. The open or closed state of the contacts is maintained by the magnetic force generated by the permanent magnet. Disconnecting the drive signal during the magnetic latching period reduces drive losses.

[0003] Existing magnetic latching relays typically consist of a magnetic circuit system, a contact system, a transmission mechanism, and a base. When a positive pulse is applied to the relay's magnetic circuit system, the system activates, and the transmission mechanism drives the moving contact of the contact system to make contact with the stationary contact, thus closing the relay. When a negative pulse is applied, the system activates, and the transmission mechanism drives the moving contact to separate from the stationary contact, thus opening the relay. Currently, the traditional approach to using relays for multi-loop control is to use multiple relays stacked together or a combination of relays. However, using multiple relays stacked together contradicts the design principles of low cost and miniaturization, as well as market demands; while the technology of combination relays is relatively complex and still limited by traditional technical structures, making it immature and difficult to achieve effective size reduction. Therefore, how to reasonably improve relays to achieve multi-state control while controlling the relay's size is a pressing technical challenge. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetic latching relay that is small in size and can achieve multi-loop control.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In one aspect, the present invention provides a magnetic latching relay, which includes a first stationary conductive plate, a second stationary conductive plate, a third stationary conductive plate, a transmission mechanism, and a movable contact bridge connected to the transmission mechanism. The movable contact bridge includes a first movable contact and a second movable contact located on opposite sides of the transmission mechanism. Driving the transmission mechanism to rotate allows the transmission mechanism to move the first and second movable contacts, such that the first movable contact connects the first and third stationary conductive plates to form a first conductive circuit, or the second movable contact connects the second and third stationary conductive plates to form a second conductive circuit. This magnetic latching relay is small in size and can achieve multi-circuit control.

[0007] Optionally, the transmission mechanism is a moving magnetic material, which can be driven to rotate under the action of a magnetic field, so as to drive the first moving contact to approach the first stationary conductive plate or drive the second moving contact to approach the second stationary conductive plate.

[0008] Optionally, the magnetic latching relay further includes a stationary iron core and a coil sleeved on the stationary iron core; the stationary iron core includes a first body and bent portions respectively disposed at both ends of the first body, and a moving magnetic conductor is located between the two bent portions. When the coil is energized, a magnetic field can be formed between the two bent portions to drive the moving magnetic conductor to rotate.

[0009] Optionally, the moving contact bridge also includes a connector for connecting the first moving contact and the second moving contact, with the middle position of the connector connected to the transmission mechanism.

[0010] Optionally, the connector includes an intermediate section and two connecting arms connected to both ends of the intermediate section. The ends of the two connecting arms away from the intermediate section are respectively connected to a first moving contact and a second moving contact. The two connecting arms and the intermediate section form a trapezoidal groove, and the opening direction of the trapezoidal groove is away from the transmission mechanism.

[0011] Optionally, the connector is an elastic element.

[0012] Optionally, the magnetic latching relay also includes a base, a transmission mechanism rotatably connected to the base, and a first static conductive plate, a second static conductive plate, and a third static conductive plate fixedly connected to the base.

[0013] Optionally, the base includes a second body and a snap-fit ​​portion disposed on the second body. The second body is provided with a first through hole and a second through hole spaced apart. The snap-fit ​​portion is located between the first through hole and the second through hole, and the snap-fit ​​portion is provided with a third through hole. The first static conductive plate, the second static conductive plate and the third static conductive plate are inserted into the first through hole, the second through hole and the third through hole respectively, and extend out of the second body respectively.

[0014] Optionally, the transmission mechanism includes a rotating shaft and a transmission block sleeved on the rotating shaft, with a first moving contact and a second moving contact located on opposite sides of the transmission block, and the rotating shaft rotatably connected to the base.

[0015] Optionally, the second static conductive plate includes two ends, one end of which extends away from the second moving contact and beyond the second body.

[0016] The beneficial effects of this invention include:

[0017] The magnetic latching relay provided in this application includes a first stationary conductive plate, a second stationary conductive plate, a third stationary conductive plate, a transmission mechanism, and a movable contact bridge connected to the transmission mechanism. The movable contact bridge includes a first movable contact and a second movable contact located on opposite sides of the transmission mechanism. The transmission mechanism is driven to rotate, and the transmission mechanism can drive the first movable contact and the second movable contact to move, so that the first movable contact connects the first stationary conductive plate and the third stationary conductive plate to form a first conductive circuit, or the second movable contact connects the second stationary conductive plate and the third stationary conductive plate to form a second conductive circuit. Thus, when the magnetic latching relay needs to connect the first conductive circuit, the transmission mechanism is driven to rotate counterclockwise. At this time, the first moving contact located on the right side of the transmission mechanism moves upward, so that the two contacts of the first moving contact connect to the first stationary conductive plate and the third stationary conductive plate respectively, thereby connecting the first conductive circuit formed by the first stationary conductive plate and the third stationary conductive plate with the external circuit. When the magnetic latching relay needs to connect the second conductive circuit, the transmission mechanism is driven to rotate clockwise. At this time, the second moving contact located on the left side of the transmission mechanism moves upward, so that the two contacts of the second moving contact connect to the second stationary conductive plate and the third stationary conductive plate respectively, thereby connecting the second conductive circuit formed by the second stationary conductive plate and the third stationary conductive plate with the external circuit. This application can control the connection or disconnection of the first and second conductive circuits by driving the transmission mechanism. It has fewer parts, a compact structure, a small overall size, and can realize multi-circuit control, effectively making up for the shortcomings of the prior art and having better application prospects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of a magnetic latching relay provided in an embodiment of the present invention;

[0020] Figure 2 This is a second schematic diagram of the structure of a magnetic latching relay provided in an embodiment of the present invention;

[0021] Figure 3 This is the third schematic diagram of the structure of the magnetic latching relay provided in the embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram illustrating the cooperation relationship between the transmission mechanism and the moving contact bridge provided in an embodiment of the present invention.

[0023] Figure 5This is a schematic diagram of the transmission mechanism provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram showing the positional relationship between the first static conductive plate, the second static conductive plate, and the third static conductive plate provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the base provided in an embodiment of the present invention.

[0026] Icons: 10-First static conductive plate; 20-Second static conductive plate; 30-Third static conductive plate; 40-Transmission mechanism; 41-Rotating shaft; 42-Transmission block; 50-Moving contact bridge; 51-First moving contact; 52-Second moving contact; 53-Connector; 531-Intermediate section; 532-Connecting arm; 60-Static iron core; 61-Bending part; 62-First body; 70-Base; 71-Second body; 72-Snap-fit ​​part; 721-Third through hole; 73-First through hole; 74-Second through hole; 75-Positioning block; 751-Positioning hole; 80-Cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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 invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Please refer to Figure 1 and Figure 2 As shown, this embodiment provides a magnetic latching relay, which includes a first stationary conductive plate 10, a second stationary conductive plate 20, a third stationary conductive plate 30, a transmission mechanism 40, and a movable contact bridge 50 connected to the transmission mechanism 40. The movable contact bridge 50 includes a first movable contact 51 and a second movable contact 52 located on opposite sides of the transmission mechanism 40. The transmission mechanism 40 is driven to rotate, and the transmission mechanism 40 can drive the first movable contact 51 and the second movable contact 52 to move, so that the first movable contact 51 connects the first stationary conductive plate 10 and the third stationary conductive plate 30 to form a first conductive circuit, or the second movable contact 52 connects the second stationary conductive plate 20 and the third stationary conductive plate 30 to form a second conductive circuit.

[0034] In this embodiment, please refer to Figure 1 and Figure 3As shown, the first static conductive plate 10, the second static conductive plate 20, and the third static conductive plate 30 are disposed on the same plane, and are spaced apart, without contacting each other. It should be noted that the first static conductive plate 10, the second static conductive plate 20, and the third static conductive plate 30 are disposed on the same plane to make the overall structure of the magnetic latching relay more compact, and are not the only limitation on the placement of the three static conductive plates. In other embodiments, the first static conductive plate 10, the second static conductive plate 20, and the third static conductive plate 30 can also be disposed on different planes, as long as mutual insulation between them is ensured.

[0035] Furthermore, the shapes of the first static conductive plate 10, the second static conductive plate 20, and the third static conductive plate 30 are not limited in this application. Those skilled in the art can set them according to actual needs, as long as they can facilitate the connection of the three to external circuits.

[0036] The transmission mechanism 40 is used to drive the movable contact bridge 50 to rotate, thereby causing the first movable contact 51 and the second movable contact 52 located at both ends of the movable contact bridge 50 to move, so that the first movable contact 51 connects the first static conductive plate 10 and the third static conductive plate 30 to form a first conductive circuit; or the second movable contact 52 connects the second static conductive plate 20 and the third static conductive plate 30 to form a second conductive circuit.

[0037] It should be noted here that when the magnetic latching relay is in use, it needs to be connected to the external circuit of the electrical equipment. Correspondingly, the first stationary conductive plate 10, the second stationary conductive plate 20, and the third stationary conductive plate 30 of the magnetic latching relay are also connected to the corresponding interfaces of the electrical equipment. In this way, the first stationary conductive plate 10, the second stationary conductive plate 20, and the third stationary conductive plate 30 can establish an electrical connection with the external circuit. When the first moving contact 51 connects the first stationary conductive plate 10 and the third stationary conductive plate 30, the first conductive circuit on the right side of the magnetic latching relay is connected. At this time, the second stationary conductive plate 20 and the third stationary conductive plate 30 are disconnected, and the second conductive circuit cannot be connected. When the second moving contact 52 connects the second stationary conductive plate 20 and the third stationary conductive plate 30, the second conductive circuit on the left side of the magnetic latching relay is connected. At this time, the first stationary conductive plate 10 and the third stationary conductive plate 30 are disconnected, and the first conductive circuit cannot be connected. It should be understood that the above left and right directions correspond to... Figure 1 The directions shown are illustrative examples for ease of understanding and should not be considered as limitations on this application.

[0038] To make the magnetic latching relay provided in this application more compact and further reduce its size, such as... Figure 3 and Figure 6As shown, in this embodiment, the first static conductive plate 10 and the second static conductive plate 20 are arranged side by side along a first direction. The third static conductive plate 30 is located on one side of the line connecting the first static conductive plate 10 and the second static conductive plate 20, and the end of the third static conductive plate 30 used for connecting to an external circuit extends between the first static conductive plate 10 and the second static conductive plate 20. The movable contact bridge 50 is located below the third static conductive plate 30. In this way, the transmission mechanism 40 drives the movable contact bridge 50 to rotate, and the first movable contact 51 and the second movable contact 52 located at both ends of the movable contact bridge 50 can move up and down to move closer to or away from the third static conductive plate 30.

[0039] In this embodiment, as Figure 3 and Figure 4 As shown, the first movable contact 51 includes two contacts. When the first movable contact 51 needs to connect the first stationary conductive plate 10 and the third stationary conductive plate 30, the first movable contact 51 moves under the drive of the transmission mechanism 40, so that one contact contacts the first stationary conductive plate 10 and the other contact contacts the third stationary conductive plate 30. Similarly, the second movable contact 52 also includes two contacts. When the second movable contact 52 needs to connect the second stationary conductive plate 20 and the third stationary conductive plate 30, the second movable contact 52 moves under the drive of the transmission mechanism 40, so that one contact contacts the second stationary conductive plate 20 and the other contact contacts the third stationary conductive plate 30.

[0040] In summary, the magnetic latching relay provided in this application includes a first stationary conductive plate 10, a second stationary conductive plate 20, a third stationary conductive plate 30, a transmission mechanism 40, and a movable contact bridge 50 connected to the transmission mechanism 40. The movable contact bridge 50 includes a first movable contact 51 and a second movable contact 52 located on opposite sides of the transmission mechanism 40. The transmission mechanism 40 drives the transmission mechanism 40 to rotate, thereby causing the first movable contact 51 and the second movable contact 52 to move, so that the first movable contact 51 connects the first stationary conductive plate 10 and the third stationary conductive plate 30 to form a first conductive circuit, or the second movable contact 52 connects the second stationary conductive plate 20 and the third stationary conductive plate 30 to form a second conductive circuit. Thus, when the magnetic latching relay needs to connect the first conductive circuit, the transmission mechanism 40 is driven to rotate counterclockwise. At this time, the first moving contact 51 located on the right side of the transmission mechanism 40 moves upward, so that the two contacts of the first moving contact 51 are respectively connected to the first stationary conductive plate 10 and the third stationary conductive plate 30, thereby connecting the first conductive circuit formed by the first stationary conductive plate 10 and the third stationary conductive plate 30 with the external circuit. When the magnetic latching relay needs to connect the second conductive circuit, the transmission mechanism 40 is driven to rotate clockwise. At this time, the second moving contact 52 located on the left side of the transmission mechanism 40 moves upward, so that the two contacts of the second moving contact 52 are respectively connected to the second stationary conductive plate 20 and the third stationary conductive plate 30, thereby connecting the second conductive circuit formed by the second stationary conductive plate 20 and the third stationary conductive plate 30 with the external circuit. This application can control the connection or disconnection of the first and second conductive circuits by driving the transmission mechanism 40. It has fewer parts, a compact structure, a small overall size, and can realize multi-circuit control, effectively making up for the shortcomings of the prior art and having better application prospects.

[0041] Please refer to Figure 5 As shown, optionally, the transmission mechanism 40 is a moving magnetic material, which can be driven to rotate under the action of a magnetic field, so as to drive the first moving contact 51 to approach the first stationary conductive plate 10 or drive the second moving contact 52 to approach the second stationary conductive plate 20. That is, this application realizes the driving of the transmission mechanism 40 by magnetic drive.

[0042] For example, in this embodiment, please refer to Figure 1 As shown, the magnetic latching relay also includes a stationary iron core 60 and a coil (not shown) sleeved on the stationary iron core 60; the stationary iron core 60 includes a first body 62 and bent portions 61 respectively disposed at both ends of the first body 62, and a moving magnetic conductor is located between the two bent portions 61. When the coil is energized, a magnetic field can be formed between the two bent portions 61 to drive the moving magnetic conductor to rotate. Please refer to... Figure 1As shown, the first body 62 of the stationary iron core 60 can be an iron rod with a coil frame sleeved on it, and the two bent portions 61 can be two iron plates connected to the two ends of the iron rod. The iron rod is located below the transmission mechanism 40, and the two iron plates are located on opposite sides of the transmission mechanism 40. The coil can be sleeved on the coil frame. Furthermore, in this embodiment, the bent portions 61 include interconnected vertical and horizontal sections, and the vertical sections of the two bent portions 61 are respectively connected to the two ends of the first body 62, while the horizontal sections of the two bent portions 61 are arranged facing each other, such as... Figure 1 As shown. By arranging the bent portions 61 as described above, this application enables the two bent portions 61 to limit the swing range of the transmission mechanism 40.

[0043] For example, when a positive pulse is applied to the coil, a magnetic field is formed between the two bent portions 61 of the stationary iron core 60, driving the moving magnetic body to rotate clockwise. This causes the second moving contact 52 of the moving contact bridge 50 to move upward toward the second stationary conductive plate 20, while the first moving contact 51 moves downward away from the first stationary conductive plate 10. When a reverse pulse is applied to the coil, a magnetic field is formed between the two bent portions 61 of the stationary iron core 60, driving the moving magnetic body to rotate counterclockwise. This causes the first moving contact 51 of the moving contact bridge 50 to move upward toward the first stationary conductive plate 10, while the second moving contact 52 moves downward away from the second stationary conductive plate 20.

[0044] In this embodiment, as Figure 4 As shown, optionally, the movable contact bridge 50 further includes a connector 53 for connecting the first movable contact 51 and the second movable contact 52, with the middle position of the connector 53 connected to the transmission mechanism 40. That is, the middle position of the connector 53 is connected to the transmission mechanism 40, and the first movable contact 51 and the second movable contact 52 are respectively connected to the opposite ends of the connector 53.

[0045] Optionally, the connector 53 includes a middle section 531 and two connecting arms 532 respectively connected to both ends of the middle section 531. The ends of the two connecting arms 532 away from the middle section 531 are respectively connected to the first movable contact 51 and the second movable contact 52, and the two connecting arms 532 and the middle section 531 form a trapezoidal groove, the opening direction of which is away from the transmission mechanism 40. This facilitates the movement of the first movable contact 51 and the second movable contact 52 when the transmission mechanism 40 moves.

[0046] In this embodiment, the connector 53 is an elastic element, which allows the second moving contact 52 to have a certain overtravel and final pressure when contacting the second stationary conductive plate 20 and the third stationary conductive plate 30, and when the first moving contact 51 contacts the first stationary conductive plate 10 and the third stationary conductive plate 30. For example, this elastic element can be a leaf spring. In this case, when installing the leaf spring, it can be inserted into the insertion interface of the transmission mechanism 40, such as... Figure 4As shown. Of course, it should be understood that the connection method of the leaf spring is only an example and should not be regarded as the only limitation on the connection method between the leaf spring and the transmission mechanism 40. In other embodiments, the middle position of the leaf spring can also be fixed above the transmission mechanism 40.

[0047] Please refer to Figure 1 , Figure 2 and Figure 7 As shown, optionally, the magnetic latching relay also includes a base 70, a transmission mechanism 40 is rotatably connected to the base 70, and a first static conductive plate 10, a second static conductive plate 20 and a third static conductive plate 30 are respectively fixedly connected to the base 70.

[0048] The specific shape of the base 70 can be determined by those skilled in the art based on the structure of the first static conductive plate 10, the second static conductive plate 20, the third static conductive plate 30, the transmission mechanism 40, and the moving contact bridge 50. This application does not impose any specific restrictions.

[0049] like Figure 7 As shown, optionally, the base 70 includes a second body 71 and a snap-fit ​​portion 72 disposed on the second body 71. The second body 71 is provided with a first through hole 73 and a second through hole 74 spaced apart. The snap-fit ​​portion 72 is located between the first through hole 73 and the second through hole 74, and the snap-fit ​​portion 72 is provided with a third through hole 721. The first static conductive plate 10, the second static conductive plate 20 and the third static conductive plate 30 are inserted into the first through hole 73, the second through hole 74 and the third through hole 721 respectively, and extend to the outside of the second body 71 respectively.

[0050] In this way, the third static conductive plate 30 can be inserted into the third through hole 721, thereby fixing the third static conductive plate 30 and the second body 71; the first static conductive plate 10 and the second static conductive plate 20 can be inserted into the first through hole 73 and the second through hole 74 respectively, thereby fixing the first static conductive plate 10 and the second static conductive plate 20 to the second body 71 respectively.

[0051] It should be noted that the first static conductive plate 10, the second static conductive plate 20, and the third static conductive plate 30 respectively pass through the second body 71 and extend beyond the second body 71 (e.g., Figure 2 (As shown) can be used to connect to the corresponding interface of electrical equipment.

[0052] It should be noted here that the second static conductive plate 20 and the first static conductive plate 10 may each have one, two, or more prongs extending beyond the second body 71. For example, as shown... Figure 2 and Figure 6As shown, in this embodiment, the second static conductive plate 20 includes two leads, with one end of each lead extending beyond the second body 71 away from the second moving contact 52. Of course, the number of leads of the second static conductive plate 20 described above is merely an example and should not be considered a limitation on the number of leads of the second static conductive plate 20 in this application. Specifically, the number of leads of the first static conductive plate 10 and the second static conductive plate 20 can be determined according to the number of corresponding interfaces of the electrical equipment. For example, as... Figure 2 As shown, when the second static conductive plate 20 has two pins and the first static conductive plate 10 and the third static conductive plate 30 each have only one pin, the magnetic latching relay can be used for electrical equipment with a total of 4 corresponding interfaces.

[0053] like Figure 6 As shown, in this embodiment, optionally, the transmission mechanism 40 includes a rotating shaft 41 and a transmission block 42 sleeved on the rotating shaft 41. The first moving contact 51 and the second moving contact 52 are located on opposite sides of the transmission block 42, and the rotating shaft 41 is rotatably connected to the base 70. In this way, the transmission mechanism 40 can be mounted on the second body 71 via the rotating shaft 41.

[0054] To facilitate the installation of the rotating shaft 41, in this embodiment, optionally, as follows: Figure 7 As shown, a positioning block 75 is also connected to the base 70. The positioning block 75 is provided with a positioning hole 751, and the rotating shaft 41 is rotatably connected to the positioning hole 751.

[0055] Furthermore, to provide protection for the magnetic latching relay, in this embodiment, the magnetic latching relay also includes a housing 80, such as... Figure 2 As shown, the cover 80 and the base 70 cooperate to form a receiving cavity, which is used to house components such as the first static conductive plate 10, the second static conductive plate 20, the third static conductive plate 30, the moving contact bridge 50, the transmission mechanism 40, and the static iron core 60.

[0056] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A magnetic latching relay, characterized in that, It includes a first static conductive plate, a second static conductive plate, a third static conductive plate, a transmission mechanism, and a movable contact bridge connected to the transmission mechanism. The movable contact bridge includes a first movable contact and a second movable contact located on opposite sides of the transmission mechanism. The movable contact bridge further includes a connector for connecting the first movable contact and the second movable contact. The middle position of the connector is connected to the transmission mechanism. The connector includes a middle section and two connecting arms respectively connected to both ends of the middle section. The ends of the two connecting arms away from the middle section are respectively connected to the first movable contact and the second movable contact. The two connecting arms and the middle section form a trapezoidal groove, and the opening direction of the trapezoidal groove is away from the transmission mechanism. The transmission mechanism is driven to rotate, and the transmission mechanism can drive the first moving contact and the second moving contact to move, so that the first moving contact connects the first static conductive plate and the third static conductive plate to form a first conductive circuit, or the second moving contact connects the second static conductive plate and the third static conductive plate to form a second conductive circuit.

2. The magnetic latching relay according to claim 1, characterized in that, The transmission mechanism is a moving magnetic conductor, which can be driven to rotate under the action of a magnetic field, so as to drive the first moving contact to approach the first stationary conductive plate or drive the second moving contact to approach the second stationary conductive plate.

3. The magnetic latching relay according to claim 2, characterized in that, The magnetic latching relay further includes a stationary iron core and a coil sleeved on the stationary iron core; the stationary iron core includes a first body and bent portions respectively disposed at both ends of the first body, and the moving magnetic conductor is located between the two bent portions. When the coil is energized, a magnetic field can be formed between the two bent portions to drive the moving magnetic conductor to rotate.

4. The magnetic latching relay according to claim 1, characterized in that, The connecting element is an elastic element.

5. The magnetic latching relay according to any one of claims 1 to 4, characterized in that, The magnetic latching relay also includes a base, the transmission mechanism is rotatably connected to the base, and the first static conductive plate, the second static conductive plate and the third static conductive plate are respectively fixedly connected to the base.

6. The magnetic latching relay according to claim 5, characterized in that, The base includes a second body and a snap-fit ​​portion disposed on the second body. The second body is provided with a first through hole and a second through hole spaced apart. The snap-fit ​​portion is located between the first through hole and the second through hole, and the snap-fit ​​portion is provided with a third through hole. The first static conductive plate, the second static conductive plate and the third static conductive plate are inserted into the first through hole, the second through hole and the third through hole respectively, and extend out of the second body.

7. The magnetic latching relay according to claim 5, characterized in that, The transmission mechanism includes a rotating shaft and a transmission block sleeved on the rotating shaft. The first movable contact and the second movable contact are located on opposite sides of the transmission block. The rotating shaft is rotatably connected to the base.

8. The magnetic latching relay according to claim 6, characterized in that, The second static conductive plate includes two ends, one end of which extends away from the second moving contact and beyond the second body.

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