Small large-current magnetic latching relay

Abstract

The utility model relates to a small-sized heavy-current magnetic latching relay, which at least comprises a base and a shell arranged outside the base, a magnetic steel assembly, a main contact assembly, an auxiliary contact assembly and a linkage assembly are at least arranged in the base, and the magnetic steel assembly comprises a magnetic steel main body rotatably and movably connected to the base. The end part of the magnetic steel main body extends to form a cantilever, the main contact assembly comprises a driving spring seat and a main static spring seat, the driving spring seat is fixedly connected with a driving reed assembly formed by overlapping and combining a plurality of driving reeds, the auxiliary contact assembly comprises an auxiliary movable spring seat and an auxiliary static spring seat, and the auxiliary static spring seat is fixedly connected with a driving reed assembly formed by overlapping and combining a plurality of driving reeds. The auxiliary movable spring seat is fixedly connected with an auxiliary movable spring piece, the linkage assembly comprises a pushing piece, and the pushing piece comprises a first end portion connected with the cantilever, a second end portion connected with the driving spring piece assembly and a third end portion connected with the auxiliary movable spring piece. The relay can improve the production efficiency and the performance of the auxiliary contact assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent electric meters, in particular to a small-sized high-current magnetic latching relay. Background Art

[0002] The magnetic latching relay is a new type of relay and also an automatic switch. Like other electromagnetic relays, it can automatically connect and disconnect the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay is completely dependent on the action of the permanent magnet. The switching state is achieved by controlling the contact or disconnection of the contacts through the movement of the permanent magnet.

[0003] In order to detect the state of the magnetic latching relay itself, an auxiliary contact assembly that is synchronously linked with the permanent magnet is usually provided inside the relay. In this way, the state of the main contact can be obtained by detecting the opening and closing of the auxiliary contact.

[0004] However, due to the small size and compact structure of the existing magnetic latching relay, the auxiliary contact assembly is often not easy to install in actual production, and the production efficiency is low. In addition, due to the limited volume, the gap between the auxiliary contacts cannot be made larger, and the auxiliary contacts may be difficult to cut off. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a small-sized large-current magnetic latching relay for improving the production efficiency and the performance of the auxiliary contact assembly.

[0006] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0007] A small high current magnetic latching relay, comprising at least:

[0008] A base and a shell arranged outside the base, wherein at least a magnetic steel component, a main contact component, an auxiliary contact component and a linkage component are arranged in the base,

[0009] The magnetic steel assembly comprises a magnetic steel body rotatably connected to a base, and a cantilever is extended from the end of the magnetic steel body.

[0010] The main contact assembly includes an active spring seat and a main static spring seat, an active spring assembly formed by stacking and combining a number of active springs is fixedly connected to the active spring seat, and two pairs of main contacts are arranged between the main static spring seat and the active spring assembly.

[0011] The auxiliary contact assembly comprises an auxiliary dynamic spring seat and an auxiliary static spring seat, the auxiliary dynamic spring seat is fixedly connected to an auxiliary dynamic spring sheet, and a pair of auxiliary contacts are arranged between the auxiliary static spring seat and the auxiliary dynamic spring sheet.

[0012] The linkage assembly includes a push piece, and the push piece includes a first end connected to the cantilever, a second end connected to the active spring assembly, and a third end connected to the auxiliary active spring.

[0013] In a preferred embodiment, a positioning column is provided at the end of the cantilever, and a first groove is provided at the first end.

[0014] In a preferred embodiment, a spring is connected to the active spring assembly, and the second end is provided with a second groove for accommodating the free end of the spring.

[0015] In a preferred embodiment, the third end portion is provided with a third groove for accommodating the auxiliary movable spring.

[0016] In a preferred embodiment, the base is provided with a first mounting cavity for accommodating a magnetic steel assembly, a second mounting cavity for accommodating a main contact assembly, and a third mounting cavity for accommodating an auxiliary contact assembly, the first mounting cavity and the third mounting cavity are arranged opposite to each other and their openings are respectively facing opposite sides of the base, the first end is located in the first mounting cavity, the second end extends into the second mounting cavity, and the third end extends into the third mounting cavity.

[0017] In a preferred embodiment, the second installation cavity is adjacent to the first installation cavity and the third installation cavity, and is provided with openings in the opening directions of the first installation cavity and the third installation cavity.

[0018] In a preferred embodiment, slots are respectively provided on opposite sides of the inner wall of the shell, arc-extinguishing magnetic steels are provided in the slots, and the arc-extinguishing magnetic steels are provided on both sides of the main contacts.

[0019] In a preferred embodiment, a U-shaped magnetic conductor coated on the arc-extinguishing magnetic steel is further provided between the arc-extinguishing magnetic steel and the inner wall of the shell.

[0020] In a preferred embodiment, a bend is provided on the auxiliary static spring seat.

[0021] Compared with the prior art, the small-sized high-current magnetic latching relay of this embodiment has the following beneficial effects:

[0022] 1) When the magnetic steel body rotates, the linkage assembly drives the active spring assembly and the auxiliary moving spring assembly to move, thereby realizing the synchronous opening and closing of the main contact assembly and the auxiliary contact assembly. The cantilever extending from the end of the magnetic steel body can increase the rotation radius, so that the auxiliary moving spring assembly driven by the cantilever through the push piece has a larger range of movement, thereby increasing the gap between a pair of auxiliary contacts, and improving the cutting ability of the auxiliary contact assembly;

[0023] 2) The base is provided with three cavities to respectively install the magnetic steel assembly, the main contact assembly and the auxiliary contact assembly, which can increase the insulation performance between the three components, make the relay work more stable, and the components are clearly divided during installation, which is conducive to operation and improves production efficiency;

[0024] 3) The second installation cavity is provided with two openings, so that the two pairs of main contacts are fully exposed to the field of vision, which is convenient for detecting the pressure and overtravel of the main contacts and reducing the contact failure rate of the relay;

[0025] 4) Arc-extinguishing magnets are arranged in the slots arranged on both sides of the inner wall of the shell. The arc-extinguishing magnets are arranged on both sides of the main contacts, which can cool and reduce the arc generated when the main contacts are working, and improve the cutting ability of the main contacts. The U-shaped magnet coated on the arc-extinguishing magnet can make the magnetic force of the arc-extinguishing magnet more concentrated, so that the arc-extinguishing effect is better;

[0026] 5) The bend set on the auxiliary static spring seat can facilitate the adjustment of production parameters. The relative position of the auxiliary contact can be adjusted by adjusting the size of the bend, and then the pressure parameters of the auxiliary contact can be adjusted to facilitate production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the three-dimensional structure of the small-sized high-current magnetic latching relay of this embodiment;

[0028] Figure 2 This is a schematic diagram of the exploded structure of the small-sized high-current magnetic latching relay of this embodiment;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the magnetic steel assembly of the small-sized high-current magnetic latching relay of this embodiment;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the magnetic steel body of the small-sized high-current magnetic latching relay of this embodiment;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the main contact assembly of the small-sized high-current magnetic latching relay of this embodiment;

[0032] Figure 6 It is a three-dimensional structural schematic diagram of the auxiliary contact assembly of the small-sized high-current magnetic latching relay of this embodiment;

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the pusher of the small-sized high-current magnetic latching relay of this embodiment;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of one side of the base of the small-sized high-current magnetic latching relay of this embodiment;

[0035] Fig. 9This is a schematic diagram of the three-dimensional structure of the other side of the base of the small-sized high-current magnetic latching relay of this embodiment;

[0036] Fig.10 This is a schematic diagram of the three-dimensional structure of the housing of the small-sized high-current magnetic latching relay of this embodiment;

[0037] Fig.11 This is a schematic diagram of the connection structure between the magnetic steel assembly and the main contact assembly of the small-sized high-current magnetic latching relay of this embodiment;

[0038] Fig.12 Schematic diagram of the connection structure between the magnetic steel assembly and the auxiliary contact assembly of the small-sized high-current magnetic latching relay of this embodiment.

[0039] Description of the accompanying drawings: 10-base, 11-first installation cavity, 12-second installation cavity, 13-third installation cavity, 20-housing, 21-slot, 22-arc extinguishing magnetic steel, 23-U-shaped magnetic guide magnet, 30-magnetic steel assembly, 31-magnetic steel body, 32-cantilever, 33-positioning column, 34-yoke, 35-positioning pin, 40-main contact assembly, 41-active spring seat, 42-active spring leaf, 43-main static spring seat, 44-main contact, 45-active spring leaf assembly, 46-spring leaf, 50-auxiliary contact assembly, 51-auxiliary moving spring seat, 52-auxiliary moving spring leaf, 53-auxiliary static spring seat, 54-auxiliary contact, 55-bend, 60-linkage assembly, 61-pushing sheet, 62-first end, 63-second end, 64-third end, 65-first groove, 66-second groove, 67-third groove. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] like Figure 1 As shown, the small-sized high-current magnetic latching relay of this embodiment includes a base 10 and a housing 20 disposed outside the base 10 .

[0043] like Figure 2 As shown, at least a magnetic steel assembly 30 , a main contact assembly 40 , an auxiliary contact assembly 50 and a linkage assembly 60 are disposed in the base 10 .

[0044] like Figure 3 As shown, the magnetic steel assembly 30 includes a magnetic steel body 31 and yokes 34 on both sides of the magnetic steel body.

[0045] like Figure 4 As shown, a cantilever 32 extends from the end of the magnetic steel body 31, and a positioning column 33 is provided at the end of the cantilever 32. Positioning pins 35 are respectively provided at the upper and lower ends of the magnetic steel body 31, and the magnetic steel body 31 is rotatably connected to the base 10 through the positioning pins 35. Since both sides of the magnetic steel body 31 are restricted by the yoke 34, the magnetic steel body 31 can only reciprocate within a certain angle.

[0046] like Figure 5 As shown, the main contact assembly 40 includes an active spring seat 41 and a main static spring seat 43. An active spring assembly 45 formed by stacking and assembling four active springs 42 is fixedly connected to the active spring seat 41. Two pairs of main contacts 44 are arranged between the main static spring seat 43 and the active spring assembly 45. A spring 46 is also connected to the active spring assembly 45.

[0047] like Figure 6 As shown, the auxiliary contact assembly 50 includes an auxiliary dynamic spring seat 51 and an auxiliary static spring seat 53. An auxiliary dynamic spring piece 52 is fixedly connected to the auxiliary dynamic spring seat 51, and a pair of auxiliary contacts 54 are arranged between the auxiliary static spring seat 53 and the auxiliary dynamic spring piece 52. Preferably, a bend 55 is arranged on the auxiliary static spring seat 53, and the relative position of the auxiliary contact 54 can be adjusted by adjusting the size of the bend 55 during the production process, thereby adjusting the pressure parameters of the auxiliary contact 54, which is convenient for production.

[0048] like Figure 7 As shown, the linkage assembly 60 includes a push piece 61. The push piece 61 includes a first end 62 connected to the cantilever 32, a second end 63 connected to the active spring assembly 45, and a third end 64 connected to the auxiliary dynamic spring 52. The first end 62 is provided with a first groove 65 for cooperating with the positioning column 32. The second end 63 is provided with a second groove 66 for accommodating the free end of the spring 46. The third end 64 is provided with a third groove 67 for accommodating the auxiliary dynamic spring 52.

[0049] like Figure 8 and Fig. 9As shown, the base 10 is provided with a first mounting cavity 11 for accommodating the magnetic steel assembly 30, a second mounting cavity 12 for accommodating the main contact assembly 40, and a third mounting cavity 13 for accommodating the auxiliary contact assembly 50. The first mounting cavity 11 and the third mounting cavity 13 are arranged opposite to each other and their openings are respectively facing the opposite sides of the base 10. The second mounting cavity 12 is adjacent to the first mounting cavity 11 and the third mounting cavity 13, and is respectively provided with an opening in the opening direction of the first mounting cavity 11 and the third mounting cavity 13.

[0050] like Fig.10 As shown, slots 21 are provided on opposite sides of the inner wall of the housing 20, and arc-extinguishing magnetic steel 22 is provided in the slots 21. A U-shaped magnet 23 covering the arc-extinguishing magnetic steel 22 is also provided between the arc-extinguishing magnetic steel 22 and the inner wall of the housing 20. The U-shaped magnet 23 can make the magnetic force of the arc-extinguishing magnetic steel 22 more concentrated.

[0051] like Fig.11 As shown, the magnetic steel assembly 30 installed in the first installation cavity 11 can reciprocate and rotate within a certain angle in the base 10. When the magnetic steel body 31 moves, the positioning column 33 provided on the cantilever 32 can abut and cooperate with the first groove 65 of the first end 62 of the push piece 61 in the first installation cavity 11, and synchronously drive the push piece 61 to perform reciprocating linear motion.

[0052] The second end 63 of the push piece 61 extends into the second installation cavity 12 , and the second groove 66 provided on the second end 63 abuts against the free end of the spring 46 , synchronously driving the active spring assembly 45 to move, thereby realizing the opening and closing of the main contact 44 .

[0053] like Fig.12 As shown, the third end portion 64 of the push piece 61 extends into the third installation cavity 13 , and the third groove 67 provided on the third end portion 64 abuts and cooperates with the auxiliary movable spring piece 53 to realize the opening and closing of the auxiliary contact 54 .

[0054] The cantilever 32 extending from the magnetic steel body 31 can increase its rotation radius within the limited rotation angle of the magnetic steel body 31, so that the linear movement distance of the push piece 61 connected to the cantilever 32 is longer, thereby increasing the gap between the auxiliary contacts 54 and improving the cutting ability of the auxiliary contact assembly.

[0055] like Fig.11 and Fig.12 As shown, the arc extinguishing magnetic steel 22 is arranged on both sides of the main contact 44, which can cool and reduce the arc generated when the main contact 44 is working, and improve the cutting ability of the main contact assembly. The second installation cavity 12 is provided with two openings, so that the two pairs of main contacts 44 are fully exposed to the field of vision, which is convenient for detecting the pressure and overtravel of the main contacts, and reducing the contact failure rate of the relay.

[0056] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. A small high current magnetic latching relay, It is characterized in that At least, A base (10) and a housing (20) arranged outside the base (10), wherein at least a magnetic steel assembly (30), a main contact assembly (40), an auxiliary contact assembly (50) and a linkage assembly (60) are arranged inside the base (10), The magnetic steel assembly (30) comprises a magnetic steel body (31) rotatably connected to the base (10), and a cantilever (32) extends from the end of the magnetic steel body (31). The main contact assembly (40) comprises an active spring seat (41) and a main static spring seat (43); an active spring assembly (45) formed by stacking and assembling a plurality of active springs (42) is fixedly connected to the active spring seat (41); two pairs of main contacts (44) are arranged between the main static spring seat (43) and the active spring assembly (45); The auxiliary contact assembly (50) comprises an auxiliary moving spring seat (51) and an auxiliary static spring seat (53); an auxiliary moving spring sheet (52) is fixedly connected to the auxiliary moving spring seat (51); a pair of auxiliary contacts (54) are arranged between the auxiliary static spring seat (53) and the auxiliary moving spring sheet (52); The linkage assembly (60) comprises a push piece (61), wherein the push piece (61) comprises a first end (62) connected to the cantilever (32), a second end (63) connected to the active reed assembly (45), and a third end (64) connected to the auxiliary active reed (52).

2. The small-sized high-current magnetic latching relay according to claim 1, Features: A positioning column (33) is provided at the end of the cantilever (32), and a first groove (65) is provided at the first end (62).

3. The small-sized high-current magnetic latching relay according to claim 1, Features: The active spring assembly (45) is connected to a spring (46), and the second end (63) is provided with a second groove (66) for accommodating a free end of the spring (46).

4. The small-sized high-current magnetic latching relay according to claim 1, Features: The third end portion (64) is provided with a third groove (67) for accommodating the auxiliary movable spring (52).

5. The small-sized high-current magnetic latching relay according to any one of claims 1 to 4, Features: The base (10) is provided with a first mounting cavity (11) for accommodating a magnetic steel assembly (30), a second mounting cavity (12) for accommodating a main contact assembly (40), and a third mounting cavity (13) for accommodating an auxiliary contact assembly (50); the first mounting cavity (11) and the third mounting cavity (13) are arranged opposite to each other and their openings are respectively facing opposite sides of the base (10); the first end portion (62) is located in the first mounting cavity (11), the second end portion (63) extends into the second mounting cavity (12), and the third end portion (64) extends into the third mounting cavity (13).

6. The small-sized high-current magnetic latching relay according to claim 5, Features: The second installation cavity (12) is adjacent to the first installation cavity (11) and the third installation cavity (13), and is provided with openings in the opening directions of the first installation cavity (11) and the third installation cavity (13).

7. The small-sized high-current magnetic latching relay according to claim 6, Features: Opposite sides of the inner wall of the housing (20) are each provided with a slot (21), an arc-extinguishing magnetic steel (22) is arranged in the slot (21), and the arc-extinguishing magnetic steel (22) is arranged on both sides of the main contact (44).

8. The small-sized high-current magnetic latching relay according to claim 7, Features: A U-shaped magnetoconductive element (23) covering the arc-extinguishing magnetic steel (22) is also provided between the arc-extinguishing magnetic steel (22) and the inner wall of the housing (20).

9. The small-sized high-current magnetic latching relay according to claim 1, Features: The auxiliary static spring seat (53) is provided with a bend (55).

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