Magnetic latching relay

Abstract

The utility model belongs to the technical field of relays, and particularly relates to a magnetic latching relay which comprises a shell and an upper cover, a coil assembly, a conducting strip and a static strip are packaged in the shell and the upper cover, the coil assembly is in electromagnetic connection with an armature assembly, the armature assembly is in sliding fit connection with a trigger assembly, and the trigger assembly is electrically connected with the conducting strip and the static strip respectively. The armature assembly rotates in the shell, the trigger assembly slides in the shell, the armature assembly is fixedly connected with the rotating block through the connecting rod rotating in the upper cover, when the coil assembly goes wrong, the rotating block can be rotated, the connecting rod is driven to rotate, the armature assembly is driven to rotate, and the armature assembly is restored to the initial state in a manual mode. And the on-off of the circuit is further controlled.

Description

Technical Field

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

[0002] Most existing magnetic latching relays can only be reset or powered on and off by a controller. If the controller or electromagnetic system fails, the magnetic latching relay cannot be reset or powered on and off.

[0003] For example, the magnetic holding relay with patent application number CN201710323496.X includes a relay base and a relay cover, a mounting partition is arranged in the middle of the relay base, an electromagnetic system is arranged on one side of the mounting partition, and a contact system is arranged on the other side, and the electromagnetic system is connected to the contact system through a push card; the electromagnetic system includes an electromagnet assembly and a moving armature assembly, and the electromagnet assembly is glued to the relay base; the contact system includes a static contact assembly and a moving contact assembly, the static contact assembly is fixedly connected to the relay base, one end of the moving contact assembly is arranged in the middle of the static contact assembly, and the other end is fixedly connected to the relay base; one end of the push card is drive-connected to the moving armature assembly, and the other end is clamped with the moving contact assembly. However, the disadvantage of this technical solution is that if the electromagnetic system fails, the magnetic holding relay cannot be reset or powered on and off. Utility Model Content

[0004] The purpose of the utility model is to provide a magnetic latching relay to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A magnetic latching relay comprises a shell and an upper cover, wherein a coil assembly, a conductive sheet and a static sheet are encapsulated in the shell and the upper cover, the coil assembly is electromagnetically connected to an armature assembly, the armature assembly is slidably connected to a trigger assembly, the trigger assembly is electrically connected to the conductive sheet and the static sheet respectively, the armature assembly rotates in the shell, the trigger assembly slides in the shell, and the armature assembly is fixedly connected to a rotating block via a connecting rod rotating in the upper cover.

[0006] Furthermore, the coil assembly includes two coil pins, which are respectively fixedly connected to two ends of the coil. The coil is wound around the outside of the iron core, and the two ends of the iron core are respectively fixed on two iron core support frames, and the two iron core support frames are fixed in the shell.

[0007] Furthermore, the core support frame is slidably connected to one end of the plug, and the other end of the plug is against the inner wall of the shell. A spring is provided between the plug and the yoke, and the yoke is fixed at the connection between the core support frame and the core.

[0008] Furthermore, the armature assembly includes a wrapping shell, which rotates in the shell body. A permanent magnet is provided at the center of the wrapping shell. Armature 1 and armature 2 are respectively provided between the two sides of the permanent magnet and the inner wall of the wrapping shell. The ends of armature 1 and armature 2 can both rest on the yoke iron.

[0009] Furthermore, a lever is fixed to the side of the armature away from the iron core, and the lever is slidably fitted in the trigger assembly.

[0010] Furthermore, the upper cover is fixed on the limiting frame, and the rotating block is slidably connected to the limiting frame.

[0011] Furthermore, the trigger assembly includes a slide groove, which is fixedly connected to a slide plate. The slide plate slides in the shell, the lever and the slide cooperate in the slide groove, the slide plate is fixedly connected to one end of the slide rod through a bracket, and the other end of the slide rod is fixedly connected to the metal contact.

[0012] Furthermore, a metal sheet 1 and a metal sheet 2 are fixed to both ends of the metal contact respectively, the metal sheet 2 is slidably connected to the conductive sheet, one end of the metal sheet can be against the arc extinguishing component, and the arc extinguishing component is electrically connected to the static sheet.

[0013] Furthermore, the metal contact is inserted into the center of the elastic contact to squeeze the elastic contact to deform, and the elastic contact is fixed on the static sheet.

[0014] Furthermore, the arc extinguishing assembly includes multiple metal grid plates, which are all fixed in the shell, the metal grid plates at one edge are electrically connected to the static plates, and the metal grid plates at the other edge are electrically connected to one end of the metal plates, and the spacing between adjacent metal grid plates gradually increases from the end to the rear.

[0015] The advantages of the utility model are:

[0016] At the moment the coil assembly is energized or the electrodes are switched, both ends of the coil assembly are magnetic, which attracts the armature assembly to rotate in the shell, drives the trigger assembly to slide in the shell, drives the conductive plate and the static plate to be energized or de-energized, and then controls the opening and closing of the circuit. Since the armature assembly itself is magnetic, after the armature assembly rotates, the coil assembly is de-energized, and the armature assembly can also maintain the state of adsorbing both ends of the coil assembly. There is no need to continuously supply power to the coil assembly to maintain the current state. When it is necessary to restore the initial state, it can be automatically adjusted by swapping the energized electrodes of the coil assembly. When there is a problem with the coil assembly, the rotating block can be rotated to drive the connecting rod to rotate, and drive the armature assembly to rotate. The armature assembly can be restored to the initial state manually, and the on and off of the circuit can also be controlled manually. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0020] Figure 4 The overall structure of the utility model is shown in FIG. Figure 4 ;

[0021] Figure 5 The overall structure of the utility model is shown in FIG. Figure 5 ;

[0022] Description of the markings in the figure:

[0023] 1. Shell; 2. Upper cover; 3. Coil pin; 4. Core support frame; 5. Core; 6. Coil; 7. Plug; 8. Spring; 9. Yoke; 10. Permanent magnet; 11. Armature 1; 12. Armature 2; 13. Wrapping shell; 14. Connecting rod; 15. Rotating block; 16. Limiting frame; 17. Push rod; 18. Slide groove; 19. Slide plate; 20. Bracket; 21. Slide rod; 22. Metal contact; 23. Metal sheet 1; 24. Metal sheet 2; 25. Conductive sheet; 26. Static sheet; 27. Elastic contact; 28. Metal grille sheet. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] Embodiment 1

[0027] like Figure 1-5As shown, a magnetic latching relay comprises a housing 1 and an upper cover 2, wherein a coil assembly, a conductive sheet 25 and a static sheet 26 are encapsulated in the housing 1 and the upper cover 2, the coil assembly is electromagnetically connected to an armature assembly, the armature assembly is slidably connected to a trigger assembly, the trigger assembly is electrically connected to the conductive sheet 25 and the static sheet 26 respectively, the armature assembly rotates in the housing 1, the trigger assembly slides in the housing 1, and the armature assembly is fixedly connected to a rotating block 15 via a connecting rod 14 rotating in the upper cover 2;

[0028] The working principle of the above technical solution is as follows: at the moment when the coil assembly is energized or the electrodes are switched, the two ends of the coil assembly are magnetic, which attracts the armature assembly to rotate in the shell 1, drives the trigger assembly to slide in the shell 1, drives the conductive piece 25 and the static piece 26 to be energized or de-energized, and then controls the opening and closing of the circuit. Since the armature assembly itself is magnetic, after the armature assembly rotates, the coil assembly is de-energized, and the armature assembly can also maintain the state of adsorbing the two ends of the coil assembly. There is no need to continuously power the coil assembly to maintain the current state. When it is necessary to restore the initial state, it can be automatically adjusted by swapping the energized electrodes of the coil assembly. When there is a problem with the coil assembly, the rotating block can be rotated to drive the connecting rod to rotate, and drive the armature assembly to rotate. The armature assembly can be restored to the initial state manually, and the on and off of the circuit can also be controlled manually.

[0029] Embodiment 2

[0030] like Figure 1-5 As shown, the coil assembly includes two coil pins 3, the two coil pins 3 are respectively fixedly connected to the two ends of the coil 6, the coil 6 is wound around the outside of the iron core 5, the two ends of the iron core 5 are respectively fixed on two iron core support frames 4, and the two iron core support frames 4 are fixed in the housing 1;

[0031] The core support frame 4 is slidably connected to one end of the plug 7, and the other end of the plug 7 is against the inner wall of the housing 1. A spring 8 is provided between the plug 7 and the yoke 9, and the yoke 9 is fixed at the connection between the core support frame 4 and the core 5;

[0032] The working principle of the above technical solution is: through the two coil pins 3 being electrically connected to the controller or the external power supply, the coil 6 is energized and controlled, and a magnetic field is generated when the coil 6 is energized, the iron core 5 has a magnetic property, one end of the iron core 5 is an S pole, and the other end is an N pole, and the two yokes 9 are respectively in contact with the two ends of the iron core 5, so one yoke 9 has an S pole magnetism, and the other yoke 9 has an N pole magnetism;

[0033] The two core support frames 4 can fix the core 5 in the housing 1 to increase the overall stability of the coil assembly;

[0034] The process of installing the coil assembly into the shell 1 is as follows: fix the two coil pins 3 on the shell 1, wind the coil 6 around the outside of the iron core 5, fix the two core support frames 4 at both ends of the iron core 5, and place the two springs 8 on both sides of the core support frame 4. Insert the two plugs 7 on both sides of the core support frame 4, wrap the spring 8 between the core support frame 4 and the plug 7, and put the assembled core support frame 4, core 5, coil 6, plug 7 and spring 8 into the shell 1 as a whole. Insert the two core support frames 4 into the grooves of the shell 1, and the two plugs 7 slide down against the inner wall of the shell 1, squeezing the plugs 7 to slide into the core support frame 4, causing the spring 8 to be compressed. The spring 8 presses the yoke 9 tightly against the end of the core 5, thereby preventing the yoke 9 from separating from the core 5 or generating gaps, which affects the magnetic conductivity.

[0035] Embodiment 3

[0036] like Figure 1-5 As shown, the armature assembly includes a wrapping shell 13, which rotates in the housing 1, and a permanent magnet 10 is provided at the center of the wrapping shell 13. An armature 11 and an armature 2 12 are provided between the two sides of the permanent magnet 10 and the inner wall of the wrapping shell 13, respectively, and the ends of the armature 11 and the armature 2 12 can both abut on the yoke 9;

[0037] A lever 17 is fixed to the side of the armature 11 away from the iron core 5, and the lever 17 is slidably fitted in the trigger assembly;

[0038] The working principle of the above technical solution is as follows: after the coil 6 is energized, the yoke 9 on one side has S-pole magnetism, and the yoke 9 on the other side has N-pole magnetism. The armature 11 on one side of the permanent magnet 10 has S-pole magnetism, and the armature 2 12 on the other side has N-pole magnetism. According to the principle that like charges repel and opposite charges attract, the yoke 9 with S-pole magnetism attracts the armature 2 12 with N-pole magnetism, and the yoke 9 with N-pole magnetism attracts the armature 11 with S-pole magnetism, which drives the wrapping shell 13 to rotate, drives the connecting rod 14 and the rotating block 15 to rotate, and drives the lever 17 to rotate, and drives the trigger assembly to slide in the housing 1.

[0039] When the coil 6 is powered off, the two yokes 9 are non-magnetic. Since the two yokes 9 are made of iron, the armature 1 11 and the armature 2 12 will be adsorbed on the two yokes 9 respectively, thereby maintaining the current state unchanged. Therefore, there is no need to continuously power the magnetic latching relay to maintain the current state, saving electricity. At the same time, it also prevents the magnetic latching relay from generating heat due to continuous power supply and burning the magnetic latching relay.

[0040] Embodiment 4

[0041] like Figure 1-5 As shown, the upper cover 2 is fixed on the limiting frame 16, and the rotating block 15 is slidably connected to the limiting frame 16;

[0042] The working principle of the above technical solution is: the limiting frame 16 limits the rotating block 15, so that the rotating block 15 rotates within a preset range.

[0043] Embodiment 5

[0044] like Figure 1-5 As shown, the trigger assembly includes a slide groove 18, the slide groove 18 is fixedly connected to a slide plate 19, the slide plate 19 slides in the housing 1, the lever 17 slides in the slide groove 18, the slide plate 19 is fixedly connected to one end of a slide rod 21 through a bracket 20, and the other end of the slide rod 21 is fixedly connected to a metal contact 22;

[0045] The two ends of the metal contact 22 are respectively fixed with a metal sheet 1 23 and a metal sheet 24, the metal sheet 24 is slidably connected with the conductive sheet 25, the end of the metal sheet 1 23 can be against the arc extinguishing component, and the arc extinguishing component is electrically connected with the static sheet 26;

[0046] The metal contact 22 is inserted into the center of the elastic contact 27 to squeeze the elastic contact 27 to deform, and the elastic contact 27 is fixed on the static piece 26;

[0047] The working principle of the above technical solution is: the wrapping shell 13 rotates, and the slide groove 18 and the slide plate 19 are driven to slide in the shell 1 through the lever 17, and the slide rod 21 is driven to move through the bracket 20, and the metal contact 22 is driven to move. The metal contact 22 is electrically connected with the conductive sheet 25 through the metal sheet 24. When the metal contact 22 moves toward the static sheet 26 and abuts against the elastic contact 27 on the static sheet 26, the circuit can enter the static sheet 26 through the conductive sheet 25, the metal sheet 24, the metal contact 22, and the elastic contact 27 to complete the circuit connection. When the metal contact 22 moves away from the static sheet 26, the metal contact 22 is separated from the elastic contact 27, and the short circuit is disconnected;

[0048] The metal contact 22 is inserted into the center of the elastic contact 27 to squeeze the elastic contact 27 to deform, thereby increasing the contact area between the metal contact 22 and the elastic contact 27 and preventing a gap from forming between the metal contact 22 and the elastic contact 27, causing the circuit to be disconnected and open, and causing poor contact.

[0049] Embodiment 6

[0050] like Figure 1-5 As shown, the arc extinguishing assembly includes a plurality of metal grid sheets 28, and the plurality of metal grid sheets 28 are fixed in the housing 1, the metal grid sheet 28 at one edge is electrically connected to the static sheet 26, and the metal grid sheet 28 at the other edge is electrically connected to the end of the metal sheet 23, and the distance between adjacent metal grid sheets 28 gradually increases from the end to the rear;

[0051] The working principle of the above technical solution is: when the current connected to the conductive sheet 25 and the static sheet 26 is too large, an arc will be generated at the moment when the metal contact 22 and the elastic contact 27 are separated. If the arc is not extinguished in time, the magnetic latching relay will be burned;

[0052] The arc extinguishing assembly in the present application can effectively extinguish the arc. When the metal contact 22 and the elastic contact 27 are separated, an arc is generated at the moment. One end of the arc is conducted to the metal grid sheet 28 at one edge through the static sheet 26. The metal contact 22 is separated from the elastic contact 27. The metal sheet 23 fixedly connected to the metal contact 22 will abut against the metal grid sheet 28 at the other edge. Then, the other end of the arc is conducted to the metal grid sheet 28 at the other edge through the metal contact 22 and the metal sheet 23. Then, the arc is elongated and divided into small segments by multiple metal grid sheets 28. The multiple small arcs move backward in the arc extinguishing assembly and are extinguished.

[0053] The distance between adjacent metal grid sheets 28 increases gradually from the end to the rear, so that the multiple small arcs are also stretched when they move backward in the arc extinguishing assembly, which can accelerate their extinguishing.

[0054] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A magnetic latching relay, characterized in that: The invention comprises a shell (1) and an upper cover (2), wherein a coil assembly, a conductive sheet (25) and a static sheet (26) are encapsulated in the shell (1) and the upper cover (2), the coil assembly is electromagnetically connected to an armature assembly, the armature assembly is slidably connected to a trigger assembly, the trigger assembly is electrically connected to the conductive sheet (25) and the static sheet (26) respectively, the armature assembly rotates in the shell (1), the trigger assembly slides in the shell (1), and the armature assembly is fixedly connected to a rotating block (15) via a connecting rod (14) rotating in the upper cover (2).

2. A magnetic latching relay according to claim 1, characterized in that: The coil assembly comprises two coil pins (3), the two coil pins (3) are respectively fixedly connected to two ends of the coil (6), the coil (6) is wound around the outside of the iron core (5), the two ends of the iron core (5) are respectively fixed on two iron core support frames (4), and the two iron core support frames (4) are fixed in the housing (1).

3. A magnetic latching relay according to claim 2, characterized in that: The core support frame (4) is slidably connected to one end of the plug (7), the other end of the plug (7) is against the inner wall of the shell (1), a spring (8) is provided between the plug (7) and the yoke (9), and the yoke (9) is fixed at the connection between the core support frame (4) and the core (5).

4. A magnetic latching relay according to claim 3, characterized in that: The armature assembly comprises a wrapping shell (13), the wrapping shell (13) rotates in the housing (1), a permanent magnet (10) is arranged at the center of the wrapping shell (13), an armature 1 (11) and an armature 2 (12) are arranged between the two sides of the permanent magnet (10) and the inner wall of the wrapping shell (13), and the ends of the armature 1 (11) and the armature 2 (12) can both abut against the yoke (9).

5. A magnetic latching relay according to claim 4, characterized in that: A lever (17) is fixed to the side of the armature (11) away from the iron core (5), and the lever (17) is slidably fitted in the trigger assembly.

6. A magnetic latching relay according to claim 1, characterized in that: The upper cover (2) is fixed on a limiting frame (16), and the rotating block (15) is slidably connected to the limiting frame (16).

7. A magnetic latching relay according to claim 5, characterized in that: The trigger assembly comprises a slide groove (18), the slide groove (18) is fixedly connected to a slide plate (19), the slide plate (19) slides in the housing (1), the lever (17) slides in the slide groove (18), the slide plate (19) is fixedly connected to one end of a slide rod (21) through a bracket (20), and the other end of the slide rod (21) is fixedly connected to a metal contact (22).

8. A magnetic latching relay according to claim 7, characterized in that: The two ends of the metal contact (22) are respectively fixed with a metal sheet one (23) and a metal sheet two (24); the metal sheet two (24) is slidably connected to the conductive sheet (25); the end of the metal sheet one (23) can be pressed against the arc extinguishing component; and the arc extinguishing component is electrically connected to the static sheet (26).

9. A magnetic latching relay according to claim 8, characterized in that: The metal contact (22) is inserted into the center of the elastic contact (27), pressing the elastic contact (27) to deform, and the elastic contact (27) is fixed on the static sheet (26).

10. A magnetic latching relay according to claim 8, characterized in that: The arc extinguishing assembly comprises a plurality of metal grid sheets (28), wherein the plurality of metal grid sheets (28) are fixed in the housing (1), the metal grid sheet (28) at one edge is electrically connected to the static sheet (26), the metal grid sheet (28) at the other edge is electrically connected to an end of a metal sheet (23), and the spacing between adjacent metal grid sheets (28) gradually increases from the end to the rear.

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