A magnetic latching relay

Abstract

The application relates to a magnetic latching relay, which comprises a shell, a coil assembly and an armature assembly arranged in the shell, a push block connected to the armature assembly, the push block being arranged to slide in the shell, a static sheet assembly and a dynamic sheet assembly arranged in the shell along the length direction of the push block, the static sheet assembly comprising a static contact sheet mounted in the shell and a static contact point fixed on the static contact sheet, the dynamic sheet assembly comprising a dynamic contact sheet mounted in the shell, a spring sheet mounted on the dynamic contact sheet and a dynamic contact point mounted on the spring sheet, the push block pushing the spring sheet to slide towards the static contact sheet or away from the static contact sheet, the static contact point being hemispherical at one end towards the dynamic contact point, and the dynamic contact point being hemispherical at one end towards the static contact point. The application has the effect of reducing the influence of magnetic force between the static contact point and the dynamic contact point on the disconnection of the relay.

Description

Technical Field

[0001] This application relates to the field of relays, and more particularly to a magnetic latching relay. Background Technology

[0002] Magnetic latching relays are a new type of relay developed in recent years. They are also a type of automatic switch. Like other electromagnetic relays, they automatically connect and disconnect circuits. However, unlike other relays, the normally closed or normally open state of a magnetic latching relay depends entirely on the action of a permanent magnet. The switching state is triggered by a pulse electrical signal of a certain width.

[0003] A Chinese invention patent with publication number CN106876217A discloses a dual-contact magnetic latching relay, including a housing, a coil assembly and an armature assembly inside the housing, a push block connected to the armature assembly, and the ability to force the armature assembly to move when the coil assembly is energized, thereby moving the push block relative to the housing. The housing also includes a dual-contact stationary plate assembly and a dual-contact moving plate assembly, and the movement of the push block can cause the dual-contact moving plate assembly to move closer to or away from the dual-contact stationary plate assembly. The dual-contact moving plate assembly is characterized by including a moving spring, one end of which is fixed to a moving... On the reed lead-out block, a slitting groove is provided on the movable reed, extending from the other end of the movable reed to one end of the movable reed, and the slitting groove divides the movable reed into two cantilevered elastic halves. A movable contact is provided on one side of the cantilevered elastic half. A cantilevered elastic sheet is provided on the other side of the cantilevered elastic half, and the cantilevered elastic sheet is inclined outward. The cantilevered elastic halves are respectively inserted into the connecting holes at one end of the push block, and the cantilevered elastic sheets are respectively inserted into the connecting holes. A contact detection mechanism is provided between the other end of the push block and the outer shell.

[0004] In existing relays, the stationary and moving contacts are energized after contact. When energized, the stationary and moving contacts generate a magnetic force that attracts each other. This magnetic force between the stationary and moving contacts can cause the moving contact to detach from the stationary contact, making it difficult for the relay to disconnect. Summary of the Invention

[0005] In order to reduce the influence of the magnetic force between the stationary and moving contacts on the disconnecting relay, this application provides a magnetic latching relay.

[0006] The magnetic latching relay provided in this application adopts the following technical solution: A magnetic latching relay includes a housing, within which a coil assembly and an armature assembly are disposed. A push block is connected to the armature assembly and is slidably disposed within the housing. A stationary plate assembly and a moving plate assembly are disposed within the housing along the length direction of the push block. The stationary plate assembly includes a stationary connecting piece installed within the housing and a stationary contact fixed on the stationary connecting piece. The moving plate assembly includes a moving connecting piece installed within the housing, a spring plate installed on the moving connecting piece, and a moving contact installed on the spring plate. The push block pushes the spring plate to slide towards or away from the stationary connecting piece. The end of the stationary contact facing the moving contact is hemispherical, and the end of the moving contact facing the stationary contact is also hemispherical.

[0007] By adopting the above technical solution, the power is turned on when the stationary contact and the moving contact are in contact. When the power is turned on, the stationary contact and the moving contact will generate a magnetic force to attract each other, which makes it difficult for the stationary contact and the moving contact to be separated. When the hemispherical stationary contact and the moving contact are separated, they will rotate, thereby disrupting the original stable magnetic field, thus reducing the influence of the magnetic force between the stationary contact and the moving contact on the disconnecting relay, and facilitating the separation of the stationary contact and the moving contact.

[0008] Optionally, the housing is provided with a stationary plate assembly and a moving plate assembly at both ends of the push block along the length direction, and the push block simultaneously drives the spring plates at both ends of the length direction to slide.

[0009] By adopting the above technical solution, two sets of stationary plate assemblies and moving plate assemblies form two circuits, enabling a single relay to simultaneously control two lines with the same function.

[0010] Optionally, one end of both the stationary and movable connecting pieces extends through the outer casing, and a connecting piece is fixedly provided at the end of both the stationary and movable connecting pieces extending out of the outer casing.

[0011] By adopting the above technical solution, the connection piece facilitates the connection of wires.

[0012] Optionally, the connecting piece is provided with anti-slip texture.

[0013] By adopting the above technical solution, the anti-slip texture can improve the stability of the connection between the connector and the wire.

[0014] Optionally, a terminal shunt post is fixed at one end of the stationary and moving terminals that extends out of the housing.

[0015] By adopting the above technical solution, the terminal shunt post is used to connect to the monitoring equipment, thereby enabling real-time monitoring of the current and voltage on the relay.

[0016] Optionally, an elastic plate is provided between the movable connecting piece and the spring piece, with one end of the elastic plate fixed to the spring piece and the other end abutting against the movable connecting piece.

[0017] By adopting the above technical solution, the elastic plate can enhance the elasticity of the spring sheet, thereby improving the connection precision of the moving contact and the stationary contact.

[0018] Optionally, a slide rod is slidably provided inside the housing. The slide rod slides toward the elastic plate or away from it. When the slide rod slides toward the elastic plate, it abuts against the spring plate, driving the spring plate to abut against the movable connector and disengage from the movable connector.

[0019] By adopting the above technical solution, the slide bar can easily drive the spring plate to disengage from the moving contact plate, making it more convenient for the moving contact to disengage from the stationary contact.

[0020] Optionally, the push block has a wedge-shaped surface, and the end of the slide rod away from the spring plate abuts against the wedge-shaped surface.

[0021] By adopting the above technical solution, the sliding rod abuts against the wedge-shaped surface, enabling the push block to move in conjunction with the sliding rod, thus facilitating the driving of the sliding rod.

[0022] Optionally, the housing includes a base and an end cap. The base has several slots circumferentially formed, and the end cap has several locking blocks fixedly disposed thereon, which are engaged in the slots.

[0023] By adopting the above technical solution, the end cover design facilitates the opening of the housing to inspect and replace relay components.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When the stationary contact and the moving contact are in contact, the power is turned on. When the power is turned on, a magnetic force will be generated between the stationary contact and the moving contact to attract each other, which makes it difficult for the stationary contact and the moving contact to be separated. When the hemispherical stationary contact and the moving contact are separated, they will rotate, thereby disrupting the original stable magnetic field, thus reducing the influence of the magnetic force between the stationary contact and the moving contact on the disconnecting relay, and facilitating the separation of the stationary contact and the moving contact. 2. Two sets of stationary plate assemblies and moving plate assemblies form two circuits, enabling a single relay to simultaneously control two lines with the same function; 3. The connecting piece facilitates the connection of electrical wires; 4. The terminal shunt is used to connect monitoring equipment, thereby enabling real-time monitoring of current, voltage, and other parameters on the relay; 5. The elastic plate can enhance the elasticity of the spring sheet, thereby improving the connection precision between the moving contact and the stationary contact; 6. The sliding rod design facilitates the disengagement of the spring plate from the moving contact plate, making it easier for the moving contact to disengage from the stationary contact. 7. The sliding rod abuts against the wedge-shaped surface, enabling the push block to move in conjunction with the sliding rod, thus facilitating the driving of the sliding rod; 8. The end cap design facilitates opening the casing to inspect and replace relay components. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural diagram of this embodiment.

[0026] Figure 2 This is an assembly view of the overall structure of this embodiment.

[0027] Explanation of reference numerals in the attached drawings: 1. Outer shell; 101. Base; 102. End cap; 2. Coil assembly; 3. Armature assembly; 4. Push block; 5. Stationary plate assembly; 51. Stationary connecting piece; 52. Stationary contact; 6. Moving plate assembly; 61. Moving connecting piece; 62. Spring plate; 621. Connecting part; 622. Bending part; 623. Mounting part; 63. Moving contact; 7. Connecting piece; 8. Anti-slip texture; 9. Terminal shunt post; 10. Elastic plate; 11. Slide rod; 12. Wedge-shaped surface; 13. Slot; 14. Locking block. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0029] This application discloses a magnetic latching relay, referring to... Figure 1The system includes a housing 1, within which a coil assembly 2 and an armature assembly 3 are installed. The coil assembly 2 is connected to a controller via a wire, and the armature assembly 3 is connected to the coil assembly 2, which in turn is connected to the controller. Both the coil assembly 2 and the armature assembly 3 are existing components of a relay and will not be described in detail here. A push block 4 is connected to the armature assembly 3 and is slidably disposed within the housing 1. The armature assembly 3 controls the sliding of the push block 4. A stationary plate assembly 5 and a moving plate assembly 6 are disposed within the housing 1 along the length of the push block 4. The stationary plate assembly 5 includes a stationary connecting piece 51 installed within the housing 1 and a stationary contact 52 fixed on the stationary connecting piece 51. The moving plate assembly 6 includes a moving connecting piece 61 installed within the housing 1, a spring plate 62 installed on the moving connecting piece 61, and a moving contact 63 installed on the spring plate 62. The spring plate 62 drives... The moving contact 63 abuts against the stationary contact 52. When the moving contact 63 abuts against the stationary contact 52, the power supply on the moving terminal 61 and the stationary terminal 51 is turned on. The pushing block 4 pushes the spring plate 62 to slide towards or away from the stationary terminal 51. The pushing of the pushing block 4 causes the moving contact 63 and the stationary contact 52 to separate, disconnecting the circuit. The end of the stationary contact 52 facing the moving contact 63 is hemispherical, and the end of the moving contact 63 facing the stationary contact 52 is also hemispherical. When the power is turned on, a magnetic force will be generated between the stationary contact 52 and the moving contact 63 to attract each other, making it difficult for the stationary contact 52 and the moving contact 63 to be separated. The hemispherical stationary contact 52 and the moving contact 63 will rotate when separated, thereby disrupting the original stable magnetic field, thus reducing the influence of the magnetic force between the stationary contact 52 and the moving contact 63 on the disconnecting relay, and facilitating the separation of the stationary contact 52 and the moving contact 63.

[0030] Reference Figure 1 The spring sheet 62 is made of several thin copper sheets bonded together. Each thin copper sheet includes a connecting part 621 riveted to the movable connecting piece 61, a bent part 622 fixed on the connecting part, and a mounting part 623 fixed on the bent part. The movable contact 63 is fixed on the mounting part 623. The rivets and the movable contact 63 fix the four thin copper sheets together. The connecting part 621 is used to fix the spring sheet 62, the bent part 622 provides elasticity to the spring sheet 62, and the mounting part 623 is used to install the movable contact 63.

[0031] Reference Figure 1Inside the outer casing 1, at both ends of the push block 4 along its length, there are stationary plate assemblies 5 and moving plate assemblies 6. The push block 4 simultaneously drives the spring plates 62 at both ends along its length to slide. The two sets of stationary plate assemblies 5 and moving plate assemblies 6 form two circuits, enabling a single relay to control two lines with the same function simultaneously. One end of the stationary connecting piece 51 and the moving connecting piece 61 extends through the outer casing 1 and is fixed with a connecting piece 7 at the end of the stationary connecting piece 51 and the moving connecting piece 61 extending out of the outer casing 1. The connecting piece 7 facilitates the connection of wires. The connecting piece 7 has anti-slip textures 8, which improve the stability of the connection between the connecting piece 7 and the wire. The end of the stationary connecting piece 51 and the moving connecting piece 61 extending out of the outer casing 1 is fixed with a terminal shunt post 9, which is used to connect monitoring equipment to monitor the current and voltage on the relay in real time.

[0032] Reference Figure 1 A spring plate 10 is provided between the moving contact 61 and the spring plate 62. One end of the spring plate 10 is fixed to the spring plate 62, and the other end abuts against the moving contact 61. The spring plate 10 can improve the elasticity of the spring plate 62, thereby improving the connection precision between the moving contact 63 and the stationary contact 52. A slide rod 11 is slidably provided inside the housing 1. The slide rod 11 slides towards or away from the spring plate 10. When the slide rod 11 slides towards the spring plate 10... The sliding rod 11 abuts against the spring plate 62, driving the spring plate 62 to abut against the moving contact plate 61 and disengage from the moving contact plate 61. The sliding rod 11 is designed to facilitate the driving of the spring plate 62 to disengage from the moving contact plate 61, making it easier for the moving contact 63 to disengage from the stationary contact 52. The push block 4 has a wedge-shaped surface 12, and the end of the sliding rod 11 away from the spring plate 62 abuts against the wedge-shaped surface 12. The sliding rod 11 abuts against the wedge-shaped surface 12 so that the push block 4 can move in conjunction with the sliding rod 11, which facilitates the driving of the sliding rod 11.

[0033] Reference Figure 1 and Figure 2 The outer casing 1 includes a base 101 and an end cover 102 detachably mounted on the base 101. The coil assembly 2, armature assembly 3, slide rod 11, push block 4, stationary plate assembly 5 and moving plate assembly 6 are all embedded in the base 101. The base 101 has several slots 13 circumferentially opened. Several locking blocks 14 are fixed on the end cover 102. The locking blocks 14 are locked in the slots 13. The end cover 102 facilitates the opening of the outer casing 1 to inspect and replace the relay components.

[0034] The implementation principle of this application embodiment is as follows: The stationary plate assembly 5 and the moving plate assembly 6 are installed inside the base 101. Then, the push block 4 is installed inside the base 101, so that the push block 4 avoids the stationary plate assembly 5 and connects to the spring plate 62 on the moving plate assembly 6. Next, a slide rod 11 is installed inside the base 101, with one end of the slide rod 11 abutting against the wedge-shaped surface 12 on the push block 4 and the other end abutting against the elastic plate 10 on the spring plate 62. The coil assembly 2 and the armature assembly 3 are installed on the base 101, connecting the coil assembly 2 and the armature assembly 3, and connecting the armature assembly 3 to the push block 4. Then, the coil assembly 2 is connected to the controller via a cable. Finally, the end cap 102 is installed on the base. The relay is installed on the base 101. When in use, the two ends of the line are connected to the connecting piece 7 of the moving connecting piece 61 and the connecting piece 7 of the stationary connecting piece 51, respectively. The terminal shunt post 9 and the monitoring equipment are connected by a cable. The controller controls the connection and disconnection of the relay. When the relay is to be disconnected from the connected state, the armature assembly 3 drives the push block 4 to slide, so that the spring plate 62 first slides towards the stationary connecting piece 51, so that the moving contact 63 rotates relative to the stationary contact 52, breaking the original connection state and breaking the magnetic field. Then, the armature assembly 3 drives the push block 4 to slide, so that the moving contact 63 on the spring plate 62 disengages from the stationary contact 52, thereby disconnecting the relay.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A magnetic latching relay, comprising a housing (1), wherein a coil assembly (2) and an armature assembly (3) are disposed within the housing (1), a push block (4) is connected to the armature assembly (3), the push block (4) is slidably disposed within the housing (1), and a stationary plate assembly (5) and a moving plate assembly (6) are disposed within the housing (1) along the length direction of the push block (4), characterized in that: The stationary plate assembly (5) includes a stationary connecting piece (51) installed inside the housing (1) and a stationary contact (52) fixed on the stationary connecting piece (51). The moving plate assembly (6) includes a moving connecting piece (61) installed inside the housing (1), a spring plate (62) installed on the moving connecting piece (61), and a moving contact (63) installed on the spring plate (62). The pushing block (4) pushes the spring plate (62) to slide towards or away from the stationary connecting piece (51). The stationary contact (52) is hemispherical at one end facing the moving contact (63), and the moving contact (63) is hemispherical at one end facing the stationary contact (52). An elastic plate (10) is provided between the moving connecting piece (61) and the spring plate (62). One end of the elastic plate (10) is fixed on the spring plate (62), and the other end abuts against the moving connecting piece (61). The housing (1) The inner sliding block (4) is provided with a sliding rod (11). The sliding rod (11) slides towards the elastic plate (10) or away from it. When the sliding rod (11) slides towards the elastic plate (10), it abuts against the spring plate (62) and drives the spring plate (62) to abut against the moving contact plate (61) and disengage from the moving contact plate (61). The push block (4) is provided with a wedge-shaped surface (12). The end of the sliding rod (11) away from the spring plate (62) abuts against the wedge-shaped surface (12). The armature assembly (3) drives the push block (4) to slide, so that the spring plate (62) first slides towards the stationary contact plate (51), so that the moving contact (63) first rotates relative to the stationary contact (52) to break the original connection state and break the magnetic field. Then, the armature assembly (3) drives the push block (4) to slide, so that the moving contact (63) on the spring plate (62) disengages from the stationary contact (52) to realize the disconnection of the relay.

2. A magnetic latching relay according to claim 1, characterized in that: The outer shell (1) is provided with a stationary plate assembly (5) and a moving plate assembly (6) at both ends of the push block (4) along the length direction. The push block (4) simultaneously drives the spring plates (62) at both ends of the length direction to slide.

3. A magnetic latching relay according to claim 2, characterized in that: One end of the stationary connector (51) and the movable connector (61) both extend through the outer shell (1) and are fixed to the outer shell (1). A connecting piece (7) is fixed to the end of the stationary connector (51) and the movable connector (61) extending out of the outer shell (1).

4. A magnetic latching relay according to claim 3, characterized in that: The connecting piece (7) has anti-slip texture (8).

5. A magnetic latching relay according to claim 4, characterized in that: The stationary connector (51) and the moving connector (61) are fixed with terminal shunt posts (9) at one end of the outer casing (1).

6. A magnetic latching relay according to claim 2, characterized in that: The outer shell (1) includes a base (101) and an end cap (102). The base (101) has several slots (13) circumferentially provided. The end cap (102) is fixed with several blocks (14), which are engaged in the slots (13).

Images