A magnetic latching relay dedicated to self-resetting over / under voltage protector

Abstract

The utility model discloses a self -recovery formula over -voltage protection ware special -purpose magnetic latching relay with better stability. Adopted technical scheme includes: base, contact system and electromagnetic system in the base, the electromagnetic system includes framework, the iron core in the framework, the armature of being connected to the both ends of iron core and the magnetic steel spare of being cooperated with armature, the contact system includes setting on the base static contact head support movable contact head support, riveting on static contact head support static contact head, riveting on movable contact head support spring piece and riveting on movable contact head support movable contact head.

Description

Technical Field

[0001] This utility model belongs to the field of relays, and in particular relates to a magnetic latching relay. Background Technology

[0002] A self-resetting over / under voltage protector is a device that automatically detects abnormal voltage and cuts off the circuit, automatically restoring power when the voltage returns to normal. Its core component uses a magnetic latching relay to achieve rapid disconnection and restoration in case of voltage abnormalities. The main feature of the magnetic latching relay for self-resetting over / under voltage protectors is its self-holding function, meaning it maintains the contact state through electromagnetic principles, keeping the circuit open or closed without continuous power supply, and retaining its state even after power failure. The structure of a traditional magnetic latching relay for self-resetting over / under voltage protectors includes: a base, a contact system and an electromagnetic system within the base. The electromagnetic system includes a frame, an iron core within the frame, armatures connected to both ends of the iron core, and magnets that cooperate with the armatures. The contact system includes a stationary contact bracket and a moving contact bracket mounted on the base, a stationary contact riveted to the stationary contact bracket, a spring assembly riveted to the moving contact bracket, and a moving contact riveted to the moving contact bracket. The magnet has a push plate for actuating the spring assembly. The disadvantages are that the force exerted on the spring assembly by the push plate is uneven and the buffering is poor, resulting in poor stability in maintaining the contact closure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a magnetic latching relay for a self-resetting over / under voltage protector with better stability.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a base, a contact system and an electromagnetic system disposed in the base, the electromagnetic system including a frame, an iron core disposed in the frame, armatures connected to both ends of the iron core and a magnetic steel component cooperating with the armature, the contact system including a stationary contact bracket and a moving contact bracket disposed on the base, a stationary contact riveted to the stationary contact bracket, a spring assembly riveted to the moving contact bracket and a moving contact riveted to the moving contact bracket, the magnetic steel component being provided with a push plate for pushing the spring assembly, the spring assembly including a main spring and a middle liner spring and an outer liner spring sequentially stacked on the front end of the main spring, the upper ends of the main spring, the middle liner spring and the outer liner spring all having a bent portion, the lower ends of the main spring having elastic feet on both sides, the front end of the push plate having a slot and pressure protrusions on both sides of the slot, the lower end of the spring assembly extending into the slot and the elastic feet abutting against the pressure protrusions.

[0005] The bottom of the push plate is provided with a raised rib that contacts the base.

[0006] The base has positioning ribs facing each other, and the ends of the positioning ribs are provided with riveting posts. A support frame is riveted to the riveting posts. The support frame has positioning holes at both ends and a shaft hole in the middle. The magnet is rotatably installed between the support frame and the base. The bottom of the armature abuts against the positioning rib, and its outer end is embedded in the positioning hole.

[0007] The magnetic steel component includes an iron sheet bracket and two iron sheets integrally formed within the iron sheet bracket. The iron sheet bracket has rotating shafts at both ends and a push rod at the lower end, which is connected to the push plate.

[0008] The lower end of the push rod is provided with a joint convex surface, and the push plate is provided with a joint concave surface connected to the joint convex surface.

[0009] Both the stationary contact bracket and the moving contact bracket have wiring portions extending out of the base at their outer ends.

[0010] The inner ends of both the stationary contact bracket and the moving contact bracket are provided with positioning posts, and the base is provided with positioning grooves that are positioned and matched with the positioning posts.

[0011] The base is equipped with a shielding cover.

[0012] The main advantages of the self-resetting over / under voltage protector magnetic latching relay of this utility model are as follows: by setting elastic feet on both sides of the lower end of the main spring and cooperating with the pressure boss on the push plate, the force is more uniform when the push plate pushes the spring group, and there is a certain buffering effect when the contact closes and impacts, thereby improving the stability of the contact closure.

[0013] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the magnetic latching relay for the self-resetting over / under voltage protector of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection between the reed assembly and the push plate of this utility model;

[0016] Figure 3 This is a schematic diagram of the push plate of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the support frame of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the base of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the moving contact bracket of this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the static contact support of this utility model;

[0021] Figure 8 This is a structural schematic diagram of the magnetic steel component of this utility model. Detailed Implementation

[0022] Reference Figure 1-8 As shown, the self-resetting over / under voltage protector magnetic latching relay of this utility model includes a base 1, a contact system 2 and an electromagnetic system 3 disposed within the base 1. The electromagnetic system 3 includes a frame 4, an iron core 5 disposed within the frame 4, armatures 6 connected to both ends of the iron core 5, and a magnet 7 cooperating with the armatures 6. Enamelled wire is also wound around the frame 4. The contact system 2 includes a stationary contact bracket 8 and a moving contact bracket 9 disposed on the base 1, a stationary contact 10 riveted to the stationary contact bracket 8, a spring assembly 11 riveted to the moving contact bracket 9, and a moving contact 12 riveted to the moving contact bracket 9. The magnet 7 is provided with a push plate 13 for pushing the spring assembly 11. The spring assembly 11 includes a main spring 14 and a middle liner spring 15 and an outer liner spring 16 sequentially stacked on the front end of the main spring 14. The main spring 14, the middle spring 15, and the outer spring 16 are all provided with bent portions 17 at their upper ends to improve elasticity. The main spring 14 has elastic feet 18 on both sides of its lower end, the push plate 13 has a slot 19 at its front end, and pressure bosses 20 are provided on both sides of the slot 19. The lower end of the spring assembly 11 extends into the slot 19, and the elastic feet 18 abut against the pressure bosses 20.

[0023] Preferably, the bottom of the push plate 13 is provided with a raised rib 21 that contacts the base 1. This increases the friction between the push plate 13 and the base 1, making the push plate 13 more sensitive to movement.

[0024] Preferably, the base 1 has opposing positioning ribs 22, and each positioning rib 22 has a riveting post 23 at its end. A support frame 24 is riveted to the support frame 24 via the riveting post 23. The support frame 24 has positioning holes 25 at both ends and a shaft hole 26 in the middle. The magnet 7 is rotatably mounted between the support frame 24 and the base 1. The bottom of the armature 6 abuts against the positioning rib 22, and its outer end is embedded in the positioning hole 25. This improves the stability of the assembly of the magnet 7 and the armature 6.

[0025] Preferably, the magnet component 7 includes an iron sheet support 27 and two iron sheets 28 integrally formed within the iron sheet support 27. The iron sheet support 27 has rotating shafts 29 at both ends, which are connected to the shaft holes 26. A push rod 30 is provided at the lower end of the iron sheet support 27, which is connected to the push plate 13. The lower end of the push rod 30 has a joint convex surface 31, and the push plate 13 has a joint concave surface 32 that connects to the joint convex surface 31. During assembly, the joint convex surface 31 is inserted into the joint concave surface 32 to achieve the connection between the magnet component 7 and the push plate 13, thereby improving the ease of assembly.

[0026] Preferably, the outer ends of both the stationary contact bracket 8 and the moving contact bracket 9 are provided with wiring portions 33 extending out of the base 1 to facilitate wiring.

[0027] Preferably, the inner ends of both the stationary contact bracket 8 and the moving contact bracket 9 are provided with positioning posts 34, and the base 1 is provided with positioning grooves 35 that are positioned and engaged with the positioning posts 34. This improves the stability of the assembly of the stationary contact bracket 8 and the moving contact bracket 9.

[0028] Preferably, the base 1 is provided with a shielding cover 36 to shield the product.

[0029] The foregoing is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A magnetic latching relay for a self-resetting over / under voltage protector, comprising a base (1), a contact system (2) and an electromagnetic system (3) disposed within the base (1), the electromagnetic system (3) comprising a frame (4), an iron core (5) disposed within the frame (4), armatures (6) connected to both ends of the iron core (5), and a magnet (7) cooperating with the armatures (6), the contact system (2) comprising a stationary contact bracket (8) and a moving contact bracket (9) disposed on the base (1), a stationary contact (10) riveted to the stationary contact bracket (8), a spring assembly (11) riveted to the moving contact bracket (9), and a moving contact (12) riveted to the moving contact bracket (9), the magnet (7) being provided with a push plate (13) for pushing the spring assembly (11), characterized in that: The reed assembly (11) includes a main reed (14) and a middle liner spring (15) and an outer liner spring (16) stacked sequentially on the front end of the main reed (14). The upper ends of the main reed (14), the middle liner spring (15) and the outer liner spring (16) are all provided with bent portions (17). The lower ends of the main reed (14) are provided with elastic feet (18) on both sides. The front end of the push plate (13) is provided with a slot (19), and the slot (19) is provided with pressure bosses (20) on both sides. The lower end of the reed assembly (11) extends into the slot (19), and the elastic feet (18) abut against the pressure bosses (20).

2. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The bottom of the push plate (13) is provided with a raised rib (21) that contacts the base (1).

3. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The base (1) has positioning ribs (22) facing each other, and the ends of the positioning ribs (22) are provided with riveting posts (23). A support frame (24) is riveted to the riveting posts (23). The support frame (24) has positioning holes (25) at both ends and a shaft hole (26) in the middle. The magnet (7) is rotatably installed between the support frame (24) and the base (1). The bottom of the armature (6) abuts against the positioning ribs (22) and the outer end is embedded in the positioning holes (25).

4. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The magnetic steel component (7) includes an iron sheet bracket (27) and two iron sheets (28) integrally formed in the iron sheet bracket (27). The iron sheet bracket (27) has a rotating shaft (29) at both ends and a push rod (30) at the lower end, which is connected to the push plate (13) through the push rod (30).

5. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 4, characterized in that: The lower end of the push rod (30) is provided with a joint convex surface (31), and the push plate (13) is provided with a joint concave surface (32) connected to the joint convex surface (31).

6. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The outer ends of both the stationary contact bracket (8) and the moving contact bracket (9) are provided with wiring portions (33) that extend out of the base (1).

7. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The inner ends of the stationary contact bracket (8) and the moving contact bracket (9) are provided with positioning posts (34), and the base (1) is provided with positioning grooves (35) that are positioned and cooperate with the positioning posts (34).

8. The magnetic latching relay for self-resetting over / under voltage protectors according to claim 1, characterized in that: The base (1) is provided with a shield (36).

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