A power grid primary and secondary fusion device special magnetic latching relay

Abstract

The utility model discloses a good stability power grid primary and secondary fusion equipment special magnetic latching relay. Adopted technical scheme includes: base, contact system and electromagnetic system of being established in the base, the electromagnetic system includes framework, the iron core of being established in the framework, riveting armature and magnetic steel assembly of being established between the iron core two ends of the iron core, the magnetic steel assembly includes iron sheet support, two iron sheets of integrally forming in the iron sheet support and with the iron sheet support connection push piece, the left and right ends integrally formed with first pivot of iron sheet support, the lower end integrally formed with push rod, the second pivot of push rod lower end integrally formed, the rear end of push piece is equipped with the axle slot of being connected with second pivot, and the front end is equipped with the stopper, one end of axle slot is equipped with closed shaft sleeve, and the other end is equipped with open shaft sleeve, and the end of stopper is equipped with the clamping groove.

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] The magnetic latching relay for power grid primary and secondary integration equipment is a special type of relay, mainly used for connection and control between primary and secondary equipment in the power grid. It needs to operate stably in harsh environments. For example, it must be able to operate stably in environments ranging from -40℃ to 85℃, and have a mechanical life of over 1 million cycles. Therefore, higher requirements are placed on the reliability of magnetic latching relays. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a magnetic latching relay for power grid primary and secondary fusion equipment with good 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 riveted to both ends of the iron core and a magnet assembly disposed between the armatures, the magnet assembly including an iron sheet bracket, two iron sheets integrally formed in the iron sheet bracket and a push plate connected to the iron sheet bracket, the iron sheet bracket having a first rotating shaft integrally formed at both ends and a push rod integrally formed at the lower end, a second rotating shaft integrally formed at the lower end of the push rod, the push plate having a shaft groove connected to the second rotating shaft at the rear end and a stop rod at the front end, a closed bushing at one end of the shaft groove and an open bushing at the other end, and a retaining groove at the end of the stop rod.

[0005] The contact system includes a stationary contact bracket and a moving contact bracket disposed opposite to each other within the base. A stationary contact is riveted to the stationary contact bracket, and a spring assembly is riveted to the upper end of the moving contact bracket. A moving contact is riveted to the spring assembly. The spring assembly includes a main spring and a middle spring and an outer spring stacked sequentially on the main spring. The lower end of the main spring is provided with a first locking foot that engages with the lower part of the slot. The lower end of the outer spring is provided with a second locking foot that engages with the lower part of the slot and a third locking foot that engages with the upper part of the slot.

[0006] The middle and outer springs are provided with a curved section in the middle.

[0007] The upper end of the moving contact bracket is provided with a riveting part, the riveting part includes a vertically arranged riveting surface and a riveting post provided on the riveting surface, the upper end of the spring group is riveted to the riveting part, the upper end of the base is provided with a riveting part mounting groove, and the lower end of the riveting part mounting groove is provided with a retaining rib to hold the riveting surface and the spring group.

[0008] The armature has positioning posts at both ends, and the base has positioning grooves that are adapted to the positioning posts.

[0009] The upper end of the stationary contact bracket is integrally formed with a riveting seat. The end of the riveting seat is connected to the stationary contact bracket through an inclined transition surface, and the stationary contact is riveted to the riveting seat.

[0010] The lower ends of the main spring and the outer liner spring are bent outward to form a figure-eight positioning structure.

[0011] The advantages of the magnetic latching relay for primary and secondary power grid integration equipment of this utility model are as follows: 1. The magnet assembly is integrally formed, which improves stability and reliability; 2. The spring is set to consist of a main spring and a middle and outer spring superimposed on the main spring, and the spring is provided with a locking structure and a bending part, which greatly improves the stability and reliability of the connection and increases the mechanical life.

[0012] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the magnetic latching relay of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the magnet assembly of this utility model;

[0015] Figure 3 This is an assembly diagram of the moving contact bracket and spring assembly of this utility model;

[0016] Figure 4 This is an exploded view of the moving contact bracket and spring assembly of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the static contact support of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the base of this utility model;

[0019] Figure 7 This is a schematic diagram of the armature structure of this utility model. Detailed Implementation

[0020] Reference Figure 1-7As shown, the magnetic latching relay for power grid primary and secondary fusion equipment 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 riveted to both ends of the iron core 5, and a magnet assembly 7 disposed between the armatures 6. The magnet assembly 7 includes an iron sheet support 8, two iron sheets 9 integrally formed on the iron sheet support 8 by insert injection molding, and a pusher 10 connected to the iron sheet support 8. The iron sheet support 8 has a first rotating shaft 11 integrally formed at both ends and a push rod 12 integrally formed at the lower end. The first rotating shaft 11 is rotatably connected to the shaft hole 39 on the base 1. The lower end of the push rod 12 has an integrally formed second rotating shaft 13. The rear end of the push plate 10 has a shaft groove 14 connected to the second rotating shaft 13. The front end of the push plate 10 has a stop rod 15, which is used to block the spring assembly 22, so that the push plate 10 can drive the spring assembly 22 to swing when pushed or pulled. One end of the shaft groove 14 has a closed bushing 16, and the other end has an open bushing 17. During assembly, one end of the second rotating shaft 13 is first inserted into the closed bushing 16, and then the other end is forcibly squeezed into the open bushing 17 to achieve quick assembly and disassembly. The end of the stop rod 15 has a retaining groove 18.

[0021] Preferably, the contact system 2 includes a stationary contact bracket 19 and a moving contact bracket 20 disposed opposite to each other within the base 1. A stationary contact 21 is riveted to the stationary contact bracket 19. A spring assembly 22 is riveted to the upper end of the moving contact bracket 20. A moving contact 23 is riveted to the spring assembly 22. The spring assembly 22 includes a main spring 24 and a middle spring 25 and an outer spring 26 stacked sequentially on the main spring 24. The lower end of the main spring 24 is provided with a first locking foot 27 that engages below the locking groove 18. The lower end of the outer spring 26 is provided with a second locking foot 28 that engages below the locking groove 18 and a third locking foot 29 that engages above the locking groove 18. During assembly, the lower end of the reed assembly 22 is inserted into the slot 18, so that the first locking foot 27 is engaged below the slot 18, and the second locking foot 28 and the third locking foot 29 are engaged below and above the slot 18 respectively, so as to achieve a stable connection between the reed assembly 22 by the push piece 10.

[0022] Preferably, the middle spring 25 and the outer spring 26 are provided with a bent portion 30 in the middle to improve the tension and mechanical life of the middle spring 25 and the outer spring 26.

[0023] Preferably, the upper end of the moving contact bracket 20 is provided with a riveting part 31, the riveting part 31 includes a vertically arranged riveting surface 32 and a riveting post 33 provided on the riveting surface 32. The upper end of the spring assembly 22 is riveted to the riveting part 31. The upper end of the base 1 is provided with a riveting part mounting groove 34, and the lower end of the riveting part mounting groove 34 is provided with a retaining rib 35 to hold the riveting surface 32 and the spring assembly 22. When the spring assembly 22 swings, the force point at the upper end acts on the retaining rib 35, thereby extending the mechanical life of the spring assembly 22. Note: Because the riveting part of the spring assembly 22 has a riveting hole, it is prone to breakage at this point.

[0024] Preferably, the armature 6 has positioning posts 36 at both ends, and the base 1 has positioning grooves 37 that are adapted to the positioning posts 36, so as to improve the assembly stability of the armature 6.

[0025] Preferably, the upper end of the stationary contact bracket 19 is integrally formed with a riveting seat 38. The end of the riveting seat 38 is connected to the stationary contact bracket 19 through an inclined transition surface 39, and the stationary contact 21 is riveted to the riveting seat 38. Because the riveting seat 38 is connected to the stationary contact bracket 19 through the inclined transition surface 39, it is slightly convex and has a certain degree of cushioning, thus enabling more stable contact with the moving contact 23.

[0026] Preferably, the lower ends of the main spring 24 and the outer retaining spring 26 are bent outward to form a figure-eight positioning structure 40. During assembly, the figure-eight positioning structure 40 is compressed and inserted into the slot 18 to improve the stability of the connection.

[0027] 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 power grid primary and secondary integrated equipment, comprising a base (1), a contact system (2) disposed within the base (1), and an electromagnetic system (3), characterized in that: The electromagnetic system (3) includes a frame (4), an iron core (5) disposed in the frame (4), armatures (6) riveted to both ends of the iron core (5) and a magnet assembly (7) disposed between the armatures (6). The magnet assembly (7) includes an iron plate bracket (8), two iron plates (9) integrally formed in the iron plate bracket (8) and a push plate (10) connected to the iron plate bracket (8). The iron plate bracket (8) has a first rotating shaft (11) integrally formed at both ends and a push rod (12) integrally formed at the lower end. The push rod (12) has a second rotating shaft (13) integrally formed at the lower end. The push plate (10) has a shaft groove (14) connected to the second rotating shaft (13) at the rear end and a stop rod (15) at the front end. The shaft groove (14) has a closed bushing (16) at one end and an open bushing (17) at the other end. The stop rod (15) has a slot (18) at the end.

2. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 1, characterized in that: The contact system (2) includes a stationary contact bracket (19) and a moving contact bracket (20) disposed opposite to each other in the base (1). A stationary contact (21) is riveted to the stationary contact bracket (19). A spring assembly (22) is riveted to the upper end of the moving contact bracket (20). A moving contact (23) is riveted to the spring assembly (22). The spring assembly (22) includes a main spring (24) and a middle spring (25) and an outer spring (26) superimposed on the main spring (24). The lower end of the main spring (24) is provided with a first locking foot (27) that is engaged with the lower part of the slot (18). The lower end of the outer spring (26) is provided with a second locking foot (28) that is engaged with the lower part of the slot (18) and a third locking foot (29) that is engaged with the upper part of the slot (18).

3. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 2, characterized in that: The middle liner (25) and the outer liner (26) are provided with a curved section (30).

4. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 2, characterized in that: The upper end of the moving contact bracket (20) is provided with a riveting part (31). The riveting part (31) includes a vertically arranged riveting surface (32) and a riveting post (33) provided on the riveting surface (32). The upper end of the spring group (22) is riveted to the riveting part (31). The upper end of the base (1) is provided with a riveting part mounting groove (34), and the lower end of the riveting part mounting groove (34) is provided with a retaining rib (35) that holds the riveting surface (32) and the spring group (22).

5. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 1, characterized in that: The armature (6) is provided with positioning posts (36) at both ends, and the base (1) is provided with positioning grooves (37) that are adapted to the positioning posts (36).

6. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 2, characterized in that: The upper end of the stationary contact bracket (19) is integrally formed with a rivet seat (38). The end of the rivet seat (38) is connected to the stationary contact bracket (19) through an inclined transition surface (39). The stationary contact (21) is riveted to the rivet seat (38).

7. The dedicated magnetic latching relay for power grid primary and secondary integrated equipment according to claim 2, characterized in that: The lower ends of the main spring (24) and the outer liner spring (26) are bent outward to form a figure-eight positioning structure (40).

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