CN211208343U - Three-phase magnetic latching relay - Google Patents

Abstract

The utility model relates to a magnetic latching relay's technical field discloses a three-phase magnetic latching relay, and its technical scheme main points include the casing and arrange promotion piece, magnetic circuit, three movable contact group and three stationary contact group in the casing in, promotion piece is by its horizontal migration of magnetic circuit drive, and then controls the synchronous deciliter of three movable contact group and three stationary contact group, the casing is close to one side of promotion piece and installs the micro-gap switch who is connected with the outside pilot lamp electricity, when movable contact group and rather than close stationary contact group separate, promotion piece supports presses micro-gap switch and makes outside pilot lamp light. The utility model discloses have the effect that makes things convenient for people to judge relay operating condition directly perceived.

Description

Three-phase magnetic latching relay

Technical Field

The utility model relates to a magnetic latching relay's technical field, more specifically says that it relates to a three-phase magnetic latching relay.

Background

The magnetic latching relay is a new type relay developed in recent years, and is also an automatic switch, and like other electromagnetic relays, the magnetic latching relay has the function of automatically switching on and off a circuit. The magnetic latching relay has the advantages that the normally closed state or the normally open state of the magnetic latching relay completely depends on the action of permanent magnetic steel, and the switching state of the magnetic latching relay is triggered by pulse electric signals with certain width to complete the switching.

In the prior art, chinese patent with publication number CN206727016U discloses a magnetic latching relay, which includes a relay upper cover and a relay base connected to the relay upper cover and disposed below the relay upper cover, an electromagnetic system disposed inside the relay base, a transmission mechanism connected to the electromagnetic system and a contact assembly connected to the transmission mechanism, the electromagnetic system includes an electromagnet and a moving armature assembly matched with the electromagnet, the contact assembly includes a fixed contact and a moving contact matched with the fixed contact, the transmission mechanism includes a pushing card connected to the moving armature assembly and a limiting structure disposed at the bottom of the relay base and used for limiting the pushing card.

The technical scheme in the prior art has the following defects: the contact assembly is arranged in a shell formed by the relay upper cover and the relay base, the relay upper cover and the relay base are usually connected together during use, people cannot directly observe the switching-on and switching-off states of the moving contact and the static contact from the outside, and therefore the working state of the magnetic latching relay is not visually judged, inconvenience is brought to users, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a three-phase magnetic latching relay has the effect that makes things convenient for people visual judgement relay operating condition.

In order to achieve the above purpose, the utility model provides a following technical scheme: a three-phase magnetic latching relay comprises a shell, a pushing piece, a magnetic circuit system, three movable contact pieces and three static contact pieces, wherein the pushing piece, the magnetic circuit system, the three movable contact pieces and the three static contact pieces are arranged in the shell, the pushing piece is driven by the magnetic circuit system to move horizontally to control the three movable contact pieces to be synchronously separated from and combined with the three static contact pieces, a microswitch electrically connected with an external indicating lamp is installed on one side, close to the pushing piece, of the shell, and when the movable contact pieces and the static contact pieces close to the movable contact pieces are separated, the pushing piece presses the microswitch to enable the external indicating lamp to be turned on.

By adopting the technical scheme, when the device works, the magnetic circuit system drives the pushing piece to horizontally move, so that the movable contact piece group is communicated with or disconnected from the static contact piece group close to the movable contact piece group. When the movable contact set is separated from the static contact set, the pushing piece is contacted with the microswitch and triggers an external indicator light to light; when the movable contact set is communicated with the static contact set, the pushing piece is separated from the microswitch, the external indicating lamp is extinguished, people can directly observe the lighting or extinguishing state of the external indicating lamp, and then the separation and combination state of the movable contact set and the static contact set is judged, so that people can conveniently judge the working state of the relay visually.

The utility model discloses further set up to: the magnetic circuit system comprises a wire frame arranged in the shell, an electromagnetic coil connected to the wire frame, yokes arranged at two ends of the wire frame and communicated with the electromagnetic coil, and an armature component rotationally connected with the shell, wherein two ends of the armature component are respectively close to the two yokes; one side of the armature component close to the pushing piece is fixed with a pushing block, one end of the pushing piece close to the armature component is provided with a pushing hole, and the pushing block penetrates through the pushing hole and is abutted against two inner walls opposite to the pushing hole.

By adopting the technical scheme, when the electromagnetic coil is electrified, the yoke iron generates magnetic force for attracting the armature component, the magnetic force can drive the armature component to rotate by taking the articulated shaft of the armature component and the shell as an axis, and then the push block drives the push sheet to horizontally move, so that the separation of the movable contact set and the fixed contact set is realized.

The utility model discloses further set up to: the upper side of the armature component is provided with a clamping plate, and the clamping plate is provided with a through hole for the armature component and a hinge shaft of the shell to extend into.

Through adopting above-mentioned technical scheme, the through hole on the splint plays the articulated shaft's of location armature subassembly and casing effect for the armature subassembly can not topple over when rotating, has improved the stability of armature subassembly.

The utility model discloses further set up to: the upper end integrated into one piece of yoke has the fixed block, be equipped with the fixed orifices that supplies the fixed block to penetrate on the splint.

Through adopting above-mentioned technical scheme, because the rigidity of yoke, the fixed block stretches into the fixed orifices and can make splint by further fixed, avoids splint to remove along with armature subassembly, has improved the stability of splint.

The utility model discloses further set up to: the casing includes upper cover and the base that links to each other through multiunit joint spare joint, the joint spare is including fixing the connecting block of upper cover below and fixing the fixture block at the base outer wall, be equipped with on the connecting block with fixture block joint complex card hole.

Through adopting above-mentioned technical scheme, the upper cover passes through the fixture block with the base and links to each other with the card hole joint, and during the dismouting operating personnel need not to use mounting tool such as screwdriver, convenient operation, dismouting are efficient.

The utility model discloses further set up to: the movable contact piece group comprises a movable piece arranged on the base and a splitter piece group, one end of the splitter piece group is riveted with the movable piece, and one side of the splitter piece group, which faces the static contact piece group close to the splitter piece group, is provided with a movable contact; three groups of positioning pieces are fixed on the pushing piece, each group of positioning pieces comprises two positioning blocks which are arranged oppositely, a positioning hole is formed between every two adjacent positioning blocks, and the free end of the splitter component is located in the positioning hole.

Through adopting above-mentioned technical scheme, when the splitter component was in natural state, the movable contact and rather than close stationary contact group butt and make the circuit intercommunication, when pushing away piece horizontal migration, the locating piece can contact with the splitter component and drive the splitter component and remove to the one side of keeping away from stationary contact group spare for the movable contact separates rather than close stationary contact group spare, thereby realizes the disconnection of circuit. The shunt piece component not only has the function of shunting, but also can control the on-off of the circuit by utilizing the deformation of the shunt piece component without moving the moving piece, thereby improving the stability of elements in the shell.

The utility model discloses further set up to: and chamfers are arranged at the joints of the end surfaces of the two positioning blocks close to each other and the end surfaces of the two positioning blocks far away from the pushing sheet.

By adopting the technical scheme, the chamfer enlarges the upper opening of the positioning hole, and the end part of the splitter assembly plays a role in guiding when extending into the positioning hole, thereby being beneficial to the installation of the splitter assembly.

The utility model discloses further set up to: the splitter plate subassembly includes movable contact spring, little splitter plate and the big splitter plate that superposes in proper order and set up to the one side of keeping away from the movable contact spring, all be equipped with on movable contact spring, little splitter plate and the big splitter plate arc bellying just the radius of arc bellying increases in proper order.

Through adopting above-mentioned technical scheme, the splitter plate subassembly comprises movable reed, little splitter plate and big splitter plate, compares in the big conducting strip of whole piece thickness, and its reposition of redundant personnel effect is better. The arc-shaped bulge part increases the creepage distance and the electric clearance between the splitter assembly and the moving plate, and the safety performance is high.

The utility model discloses further set up to: and the movable reed, the small splitter plate and the large splitter plate are all provided with through holes extending along the length direction of the movable reed, the small splitter plate and the large splitter plate.

By adopting the technical scheme, the through holes not only enable the movable spring pieces, the small splitter plates and the large splitter plates to be easier to deform, but also reduce the material consumed during processing of the splitter plate assembly and save resources.

To sum up, the utility model discloses following beneficial effect has:

1. when the movable contact set is separated from the static contact set close to the movable contact set, the pushing piece is abutted against the microswitch and an external indicating lamp is turned on, when the movable contact set is communicated with the static contact set close to the movable contact set, the pushing piece is separated from the microswitch and the external indicating lamp is turned off, so that people can directly judge the working state of the relay visually through the on and off of the external indicating lamp, and the relay is convenient and quick;

2. when the movable contact set is driven to separate from the static contact set close to the movable contact set, the electromagnetic coil works and generates magnetic force, so that the armature assembly rotates, one end close to the movable contact set is abutted to the yoke, the push block drives the push sheet to move towards one side far away from the static contact set, the movable contact and the static contact set are separated, a circuit is disconnected, the microswitch is triggered, the indicator lamp is lightened, and the structure is simple and the automation degree is high;

3. the arc-shaped bulge part increases the creepage distance and the electric clearance between the shunt piece assembly and the moving piece, and the safety performance is high; the through hole has the effect of saving the production materials of the splitter plate assembly.

Drawings

FIG. 1 is a schematic structural view of the present embodiment when the upper cover and the base are coupled;

FIG. 2 is a schematic view of the structure of the present embodiment when the cover and the base are separated;

FIG. 3 is a schematic structural view of a base in the present embodiment;

FIG. 4 is an exploded view of the present embodiment with the cover and base removed;

fig. 5 is a schematic structural diagram of the movable contact set and the fixed contact set in this embodiment.

Reference numerals: 1. a housing; 11. an upper cover; 12. a base; 121. a sliding groove; 122. mounting grooves; 123. inserting a block; 2. a push sheet; 21. a pushing hole; 22. positioning blocks; 23. positioning holes; 24. chamfering; 3. a magnetic circuit system; 31. a wire frame; 32. an electromagnetic coil; 33. a yoke; 331. a fixed block; 34. an armature assembly; 341. a push block; 342. hinging a shaft; 4. a movable contact spring set; 41. a moving plate; 411. a slot; 42. a splitter assembly; 421. a movable spring plate; 422. a small splitter plate; 423. a large splitter plate; 424. a movable contact; 425. an arc-shaped convex part; 426. a through hole; 5. a stationary contact set; 51. a still sheet; 52. a stationary contact; 6. a clamping piece; 61. connecting blocks; 611. a clamping hole; 62. a clamping block; 621. a bevel; 7. a microswitch; 8. a splint; 81. a fixing hole; 82. a through hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a three-phase magnetic latching relay, which comprises a shell 1, a push sheet 2 (shown in fig. 4) arranged in the shell 1, a magnetic circuit system 3, three movable contact sheet groups 4 and three fixed contact sheet groups 5, as shown in fig. 1 and 2. Casing 1 includes upper cover 11 and base 12 that link to each other through multiunit joint spare 6 joint, is equipped with a sliding tray 121 and three mounting groove 122 (see fig. 3) that set up side by side on the base 12, and sliding tray 121 extends and communicates with mounting groove 122 along the length direction of base 12, and the setting is slided in sliding tray 121 to promotion piece 2, and three movable contact group 4 and three stationary contact group 5 are the interval setting, and a movable contact group 4 and a stationary contact group 5 are located same mounting groove 122. The installing groove 122 is provided with a microswitch 7 at one end close to the magnetic circuit system 3, the microswitch 7 is electrically connected with an external indicating lamp arranged outside the shell 1, and the magnetic circuit system 3 can drive the pushing sheet 2 to horizontally move, so that the movable contact sheet group 4 and the fixed contact sheet group 5 are communicated or separated, the pushing sheet 2 is abutted to or separated from the microswitch 7, and the external indicating lamp is controlled to be turned on or turned off.

As shown in fig. 2 and 3, the fastening member 6 includes a connecting block 61 disposed on the lower end surface of the upper cover 11 and a fastening block 62 disposed on the outer wall of the base 12, wherein the connecting block 61 and the upper cover 11 are integrally formed, the fastening block 62 and the base 12 are integrally formed, the upper end surface of the fastening block 62 is an inclined surface 621, and the connecting block 61 is provided with a fastening hole 611 engaged with the fastening block 62. When connecting base 12 and upper cover 11, with upper cover 11 to the one side removal that is close to base 12, connecting block 61 contacts and produces deformation with the inclined plane 621 of fixture block 62 earlier gradually, and behind fixture block 62 stretched into card hole 611, connecting block 61 no longer received the extrusion of fixture block 62 and the reconversion, and fixture block 62 can restrict upper cover 11 and remove to the one side of keeping away from base 12 this moment, and the joint strength of upper cover 11 and base 12 is high and easy dismounting.

As shown in fig. 3 and 4, the fixed contact set 5 includes a fixed contact 52 fixed on the fixed contact 51 and a fixed plate 51, the fixed contact 51 is embedded on the base 12, one end of the fixed contact extends out of the base 12, and the fixed contact 52 is located on one side of the fixed contact 51 close to the movable contact set 4. The movable contact spring group 4 includes movable contact spring 41 and the shunt piece subassembly 42 that one end links to each other with movable contact spring 41, and movable contact spring 41 inlays to be established in mounting groove 122 and one end stretches out base 12, is equipped with the inserted block 123 with base 12 integrated into one piece on the diapire of mounting groove 122, and the lower terminal surface of movable contact spring 41 is equipped with slot 411, and inserted block 123 stretches into slot 411 when movable contact spring 41 imbeds mounting groove 122, plays the effect of location movable contact spring 41.

As shown in fig. 4 and 5, the splitter component 42 includes a movable spring plate 421, a small splitter 422, and a large splitter 423 that are sequentially stacked, where the movable spring plate 421, the small splitter 422, and the large splitter 423 are all made of metal thin sheets and have certain elasticity, and the positions of the movable spring plate 421 and the movable plate 41 are close. One end of the movable spring plate 421, the small shunt and the large shunt piece 423 far away from the push piece 2 are riveted with the movable piece 41, one end close to the push piece 2 is fixed with a movable contact 424, and the movable contact 424 is positioned on one side of the shunt piece assembly 42 facing the fixed contact 52. When the shunt member 42 is in its natural state, the movable contact 424 abuts the stationary contact 52 adjacent thereto and completes the circuit.

As shown in fig. 4 and 5, each of the movable spring plate 421, the small shunt piece 422 and the large shunt piece 423 is provided with an arc-shaped protrusion 425 and a through hole 426, the through hole 426 extends along the length direction of the shunt piece assembly 42, the radii of the three arc-shaped protrusions 425 increase in sequence towards the side far away from the movable piece 41, and the arc-shaped protrusions 425 increase the creepage distance and the electric gap between the movable piece 41 and the shunt piece assembly 42, and have high safety performance.

As shown in fig. 2 and 4, the magnetic circuit system 3 includes a bobbin 31 mounted on the base 12, an electromagnetic coil 32 connected to the bobbin 31, yokes 33 disposed at two ends of the bobbin 31 and communicated with the electromagnetic coil 32, and armature components 34 disposed in the base 12, wherein two ends of the armature components 34 are respectively close to the yokes 33 at two ends of the bobbin 31, a middle portion of the armature components 34 is rotatably connected to the base 12 through hinge shafts 342, and magnetic force generated when the electromagnetic coil 32 is energized can drive the armature components 34 to rotate around the hinge shafts 342.

As shown in fig. 2 and 4, a pushing block 341 is fixed on one side of the armature assembly 34 close to the pushing sheet 2, a pushing hole 21 is formed at one end of the pushing sheet 2 close to the armature assembly 34, and the pushing block 341 penetrates through the pushing hole 21 and is hinged to two inner walls opposite to the pushing hole 21. Three sets of positioning parts are fixed on the pushing sheet 2, each set of positioning part comprises two positioning blocks 22 which are arranged oppositely, a positioning hole 23 is formed between the two positioning blocks 22 in the same positioning part, the free end of the splitter component 42 is positioned in the positioning hole 23, and chamfers 24 are arranged at the end surfaces of the two positioning blocks 22 close to each other and the joint of the two positioning blocks 22 far away from the end surface of the pushing sheet 2. When the armature assembly 34 rotates, the pushing block 341 abuts against the inner wall of the pushing hole 21 and drives the pushing piece 2 to move horizontally, so that the positioning block 22 drives the shunt assembly 42 to move, and the moving contact 424 and the static contact 52 are separated.

As shown in fig. 2 and 4, the clamp plate 8 is placed directly above the armature assembly 34, two ends of the clamp plate 8 are respectively provided with a fixing hole 81, the upper ends of the two yokes 33 are respectively integrally formed with a fixing block 331, the two fixing holes 81 are respectively penetrated into the two fixing holes 81, the middle of the clamp plate 8 is provided with a through hole 82, and a hinge shaft 342 of the armature assembly 34 is penetrated into the through hole 82. The clamp plate 8 acts as an auxiliary limit armature assembly 34, improving stability of the armature assembly 34 as it rotates.

The implementation principle of the embodiment is as follows: when the electromagnetic coil 32 is energized, a magnetic force for driving the armature assembly 34 to rotate is generated, so that the armature assembly 34 rotates around the hinge shaft 342; when the armature assembly 34 abuts against the yoke 33 far away from the movable contact set 4, the push block 341 drives the push piece 2 to move towards one side close to the fixed contact set 5, so that the movable contact 424 and the fixed contact 52 are contacted and electrically communicated, meanwhile, the push piece 2 is separated from the microswitch 7, and the external indicator lamp is turned off. When armature assembly 34 and yoke 33 butt that is close to movable contact group 4, ejector pad 341 drives and promotes piece 2 and to the one side removal of keeping away from stationary contact group 5 for movable contact 424 and stationary contact 52 separation, circuit disconnection, promote piece 2 and micro-gap switch 7 butt simultaneously, and the outside pilot lamp lights, and people can directly judge the operating condition of relay through the bright going out of outside pilot lamp, and is directly perceived convenient.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a three-phase magnetic latching relay, includes casing (1) and arranges promotion piece (2), magnetic circuit (3), three movable contact spring group (4) and three stationary contact spring group (5) in casing (1) in, its characterized in that: the push sheet (2) is driven by the magnetic circuit system (3) to move horizontally so as to control the three movable contact sets (4) and the three static contact sets (5) to be synchronously separated and combined, one side, close to the push sheet (2), of the shell (1) is provided with a microswitch (7) electrically connected with an external indicator lamp, and when the movable contact sets (4) and the static contact sets (5) close to the movable contact sets (4) are separated, the push sheet (2) presses the microswitch (7) and enables the external indicator lamp to be lighted.

2. A three-phase magnetic latching relay according to claim 1, characterized in that: the magnetic circuit system (3) comprises a wire frame (31) arranged in the shell (1), an electromagnetic coil (32) connected to the wire frame (31), yokes (33) arranged at two ends of the wire frame (31) and communicated with the electromagnetic coil (32), and an armature component (34) rotatably connected with the shell (1), wherein two ends of the armature component (34) are respectively close to the two yokes (33); a pushing block (341) is fixed on one side of the armature component (34) close to the pushing piece (2), a pushing hole (21) is formed in one end of the pushing piece (2) close to the armature component (34), and the pushing block (341) penetrates through the pushing hole (21) and is abutted against two inner walls opposite to the pushing hole (21).

3. A three-phase magnetic latching relay according to claim 2, characterized in that: a clamping plate (8) is arranged on the upper side of the armature component (34), and a through hole (82) for the armature component (34) and a hinge shaft (342) of the shell (1) to extend into is formed in the clamping plate (8).

4. A three-phase magnetic latching relay according to claim 3, characterized in that: the upper end of yoke (33) integrated into one piece has fixed block (331), be equipped with on splint (8) and supply fixed block (331) fixed orifices (81) that penetrate.

5. A three-phase magnetic latching relay according to claim 1, characterized in that: casing (1) includes upper cover (11) and base (12) that link to each other through multiunit joint spare (6) joint, joint spare (6) are including fixing connecting block (61) in upper cover (11) below and fixing fixture block (62) at base (12) outer wall, be equipped with on connecting block (61) with fixture block (62) joint complex card hole (611).

6. A three-phase magnetic latching relay according to claim 5, characterized in that: the movable contact assembly (4) comprises a movable piece (41) arranged on the base (12) and a shunt piece assembly (42) with one end riveted with the movable piece (41), and one side of the shunt piece assembly (42) facing the static contact assembly (5) close to the shunt piece assembly (42) is provided with a movable contact (424); three groups of positioning parts are fixed on the pushing piece (2), each group of positioning parts comprises two positioning blocks (22) which are arranged oppositely, a positioning hole (23) is formed between every two adjacent positioning blocks (22), and the free end of the splitter component (42) is positioned in the positioning hole (23).

7. A three-phase magnetic latching relay according to claim 6, characterized in that: the connecting parts of the end surfaces of the two positioning blocks (22) close to each other and the end surfaces of the positioning blocks far away from the pushing sheet (2) are provided with chamfers (24).

8. A three-phase magnetic latching relay according to claim 6, characterized in that: shunt piece subassembly (42) include to moving reed (421), little shunt piece (422) and big shunt piece (423) of keeping away from one side coincide in proper order setting of moving plate (41), all be equipped with arc bellying (425) just on moving reed (421), little shunt piece (422) and big shunt piece (423) the radius of arc bellying (425) increases in proper order.

9. A three-phase magnetic latching relay according to claim 8, characterized in that: and through holes (426) extending along the length direction of the movable reed (421), the small shunting pieces (422) and the large shunting pieces (423) are respectively arranged on the movable reed, the small shunting pieces (422) and the large shunting pieces.

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