Magnetic latching relay

Abstract

The embodiment of the utility model provides a magnetic latching relay. The magnetic latching relay comprises a coil assembly and two yokes, the coil assembly comprises a plurality of enameled wires and a plurality of iron cores; the plurality of enameled wires are positioned outside the plurality of iron cores; the two yokes are positioned at two ends of the plurality of iron cores and are respectively connected with the plurality of iron cores; first isolation parts are arranged on the two yokes and located between the adjacent iron cores in the multiple iron cores, so that suction force is generated through the multiple enameled wires, and magnetic line interference between the adjacent enameled wires is reduced through the first isolation parts. Meanwhile, the number of turns on each enamelled wire is reduced under the condition that the total number of turns of the enamelled wires is the same, so that the total perimeter of the enamelled wires is shortened, and the cost is reduced. In addition, under the condition that the total perimeters of the enameled wires are the same, the total number of turns of the enameled wires is increased, and suction is improved.

Description

Technical Field

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

[0002] A relay is a control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually applied to an automatic control circuit. In fact, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit. A magnetic latching relay is a type of relay that also plays a role in automatically connecting and disconnecting the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay completely depends on the action of a permanent magnet. When the coil in the magnetic latching relay passes through the rated voltage, a certain magnetic field will be generated. One end of the armature assembly will generate a repulsive force with the yoke, and the other end of the yoke assembly will generate an attractive force with the yoke, thereby realizing the rotation of the armature assembly and further realizing the state switching of the magnetic latching relay. In order to maintain a certain suction force in the coil assembly of the magnetic latching relay in the related art, the enameled wire in the coil assembly will maintain a certain number of turns, and the material used for one turn of the outer enameled wire is more than that for one turn of the inner enameled wire, which makes the material cost of the enameled wire in the coil assembly too high. Content of the Utility Model

[0003] In view of the above problems, embodiments of the present utility model are proposed to provide a magnetic latching relay that overcomes the above problems or at least partially solves the above problems.

[0004] To solve the above problems, embodiments of the present utility model disclose a magnetic latching relay, including:

[0005] A coil assembly and two yokes;

[0006] The coil assembly includes a plurality of enameled wires and a plurality of iron cores;

[0007] The plurality of enameled wires are located outside the plurality of iron cores;

[0008] The two yokes are located at both ends of the plurality of iron cores and are respectively connected to the plurality of iron cores; a first isolation part is provided between adjacent iron cores among the plurality of iron cores on the two yokes.

[0009] Optionally, the number of the plurality of iron cores is two, including a first iron core and a second iron core.

[0010] Optionally, the two yokes include a first arm; the first arm is respectively connected to the first iron core and the second iron core;

[0011] The first iron core and the second iron core are arranged side by side along the extending direction of the first arm of the two yokes.

[0012] Optionally, the two yokes further include a second arm; the second arm is connected to the first arm;

[0013] A first isolation portion is provided between the first iron core and the second iron core on the two yokes; the first isolation portion has an opening, and the opening faces the second arm of the two yokes.

[0014] Optionally, the coil assembly further includes: coil bobbins having the same number as the plurality of iron cores;

[0015] The iron cores are respectively inserted into through holes of the corresponding coil bobbins; the plurality of enameled wires are wound outside the coil bobbins.

[0016] Optionally, the number of the plurality of enameled wires is two, including a first enameled wire and a second enameled wire;

[0017] The winding direction of the first enameled wire is the same as that of the second enameled wire, and the first enameled wire and the second enameled wire are connected in series so that the magnetic pole directions generated by the first enameled wire and the second enameled wire are the same.

[0018] Optionally, the coil assembly further includes a first pin, a second pin, a third pin and a fourth pin; the first pin, the second pin, the third pin and the fourth pin are respectively arranged at the same end of the coil bobbin; the first pin is connected to one end of the first enameled wire, the second pin is connected to the other end of the first enameled wire and is simultaneously connected to the third pin, the third pin is connected to one end of the second enameled wire, and the fourth pin is connected to the other end of the second enameled wire.

[0019] Optionally, the magnetic latching relay further includes: a moving contact lead piece, a moving contact, a static contact lead piece, a pushing card and an armature assembly; the two yokes further include a second arm; the second arm is connected to the first arm;

[0020] The first end of the moving contact is connected to the first end of the pushing card, and the second end of the moving contact is connected to one end of the moving contact lead piece; a moving contact is provided on the surface of the moving contact facing the static contact lead piece; a static contact is provided on the surface of the static contact lead piece facing the moving contact; the position of the static contact corresponds to the position of the moving contact;

[0021] The second end of the pushing card is connected to the armature assembly;

[0022] The armature assembly is located between the second arms of the two yokes.

[0023] Optionally, the armature assembly includes: a fixed bracket, a permanent magnet, two armatures, and an enclosure;

[0024] The permanent magnet is stacked between the two armatures to form an I-shape and is fixed by the enclosure;

[0025] A rotation hole is provided in the middle of the fixed bracket; the enclosure is rotatably connected to the inside of the fixed bracket through the rotation hole;

[0026] A push arm is provided on the enclosure in the direction towards the push card; the push arm is connected to the second end of the push card;

[0027] The two armatures rotate according to the magnetic pole directions of the magnetic fields generated by the first enameled wire and the second enameled wire, and are attracted to the second arm of one of the two yokes; when the two armatures rotate, the enclosure rotates synchronously.

[0028] Optionally, the number of the plurality of iron cores is two, including a first iron core and a second iron core.

[0029] Optionally, the two yokes include a first arm; the first arm is respectively connected to the first iron core and the second iron core;

[0030] The first iron core and the second iron core are arranged side by side along the extension direction perpendicular to the first arm of the two yokes.

[0031] Optionally, a first isolation part is provided on the two yokes between the first iron core and the second iron core; the first isolation part is arranged along the extension direction of the yoke, and completely isolates or divides and keeps partially connected the two corresponding parts of the yoke to the first iron core and the second iron core.

[0032] Optionally, the magnetic latching relay further includes: an armature assembly; the armature assembly includes: two armatures;

[0033] The two armatures partially correspond to the two yokes, and a second isolation part is provided at a position corresponding to the first isolation part of the two yokes; the width of the second isolation part corresponds to the width of the first isolation part.

[0034] Optionally, the coil assembly further includes: coil bobbins having the same number as the plurality of iron cores;

[0035] Each of the iron cores is respectively inserted into a through hole of the corresponding coil bobbin; each of the enameled wires is wound outside the corresponding coil bobbin.

[0036] Optionally, the number of the plurality of enameled wires is two, including a first enameled wire and a second enameled wire;

[0037] The winding direction of the first enameled wire is the same as that of the second enameled wire, and the first enameled wire and the second enameled wire are connected in series so that the magnetic pole directions generated by the first enameled wire and the second enameled wire are the same.

[0038] Optionally, the coil assembly further includes a first pin, a second pin, a third pin, and a fourth pin; the first pin, the second pin, the third pin, and the fourth pin are respectively arranged at the same end of the coil bobbin; the first pin is connected to one end of the first enameled wire, the second pin is connected to the other end of the first enameled wire and is simultaneously connected to the third pin, the third pin is connected to one end of the second enameled wire, and the fourth pin is connected to the other end of the second enameled wire.

[0039] Optionally, the magnetic latching relay further includes: a moving spring lead piece, a moving spring piece, a static spring lead piece, a pushing card, and an armature assembly; the two yokes further include a second arm; the second arm is connected to the first arm;

[0040] The first end of the moving spring piece is connected to the first end of the pushing card, and the second end of the moving spring piece is connected to one end of the moving spring lead piece; a moving contact is provided on the surface of the moving spring piece facing the static spring lead piece; a static contact is provided on the surface of the static spring lead piece facing the moving spring piece; the position of the static contact corresponds to the position of the moving contact;

[0041] The second end of the pushing card is connected to the armature assembly;

[0042] The armature assembly is located between the second arms of the two yokes.

[0043] Optionally, the armature assembly includes: a fixed bracket, a permanent magnet, two armatures, and an enclosure;

[0044] The permanent magnet is stacked between the two armatures to form an I shape and is fixed by the enclosure;

[0045] A rotating hole is provided in the middle of the fixed bracket; the enclosure is rotatably connected to the inside of the fixed bracket through the rotating hole;

[0046] A pushing arm is provided on the enclosure facing the direction of the pushing card; the pushing arm is connected to the second end of the pushing card;

[0047] The two armatures rotate according to the magnetic pole directions of the magnetic fields generated by the first enameled wire and the second enameled wire and are attracted to the second arm of one of the two yokes; when the two armatures rotate, the enclosure rotates synchronously.

[0048] The embodiments of the present utility model have the following advantages:

[0049] An embodiment of the present utility model provides a magnetic latching relay, which includes: a coil assembly and two yokes; the coil assembly includes a plurality of enameled wires and a plurality of iron cores; the plurality of enameled wires are wound around the plurality of iron cores; the two yokes are located at both ends of the plurality of iron cores and are respectively connected to the plurality of iron cores; a first isolation portion is provided between adjacent iron cores among the plurality of iron cores on the two yokes, so as to generate suction force through the plurality of enameled wires, and on the one hand, partially isolate the magnetic lines of force between adjacent iron cores through the first isolation portion, guide part of the magnetic lines of force of adjacent iron cores to bypass the first isolation portion, reduce the interference of the magnetic lines of force between adjacent iron cores, and at the same time, generate a magnetic field through the plurality of enameled wires to bring suction force, so that the magnetic lines of force of the plurality of magnetic fields are partially superimposed, increasing the overall suction force in the specified direction. On the other hand, the setting of the plurality of enameled wires reduces the number of turns on each enameled wire compared with the setting of a single enameled wire when the total number of turns is the same, thereby reducing the number of turns on the outer circle of the enameled wire, making the total circumference of the plurality of enameled wires shorter than the total circumference of a single enameled wire, shortening the total circumference of the enameled wire, reducing the material used for the enameled wire to reduce costs. On the other hand, the setting of the plurality of enameled wires increases the total number of turns of the enameled wire compared with the setting of a single enameled wire when the total circumference of the enameled wire is the same, thereby increasing the suction force generated by the enameled wire.

[0050] On the other hand, in the magnetic latching relay of the present utility model, the number of the plurality of iron cores is two, including a first iron core and a second iron core, the number of the plurality of enameled wires is two, including a first enameled wire and a second enameled wire, the winding direction of the first enameled wire is the same as that of the second enameled wire, and the first enameled wire and the second enameled wire are connected in series, so as to generate a magnetic field through the two enameled wires, and the magnetic poles of the two magnetic fields are the same, so that the two magnetic fields with the same magnetic poles generate suction force in the same direction.

[0051] On the other hand, in the magnetic latching relay of the present utility model, the first iron core and the second iron core are arranged side by side along the first extension direction of the two yokes, a first isolation portion is provided between the first iron core and the second iron core on the two yokes, the first isolation portion has an opening, and the opening faces the second arms of the two yokes, and the magnetic lines of force of the magnetic fields corresponding to the first iron core and the second iron core arranged side by side along the first extension direction of the two yokes are guided through the first isolation portion, so that the two magnetic fields reduce mutual interference, and at the same time, the suction force generated by the two magnetic fields is increased.

[0052] On the other hand, in the magnetic latching relay of the present utility model, the first iron core and the second iron core are arranged side by side along the extension direction perpendicular to the first arm of the two yokes. A first isolation portion is provided between the first iron core and the second iron core on the two yokes. The first isolation portion is arranged along the extension direction of the yoke, completely isolating or dividing and keeping partial connection of the two corresponding portions of the first iron core and the second iron core in the yoke. By isolating or dividing the two yokes through the first isolation portion, the magnetic force lines of the magnetic fields corresponding to the first iron core and the second iron core arranged side by side along the extension direction perpendicular to the first arm of the two yokes are guided, so that the two magnetic fields reduce mutual interference, and at the same time, the suction force generated by the two magnetic fields is increased.

[0053] On the other hand, in the present utility model, a second isolation portion is provided at the position corresponding to the first isolation portion of the two yokes of the two armatures in the magnetic latching relay. Thus, when the magnetic force lines of the two magnetic fields pass through the two armatures, due to the arrangement of the second isolation portion, the direction of the magnetic force lines of the two magnetic fields is guided, avoiding the interference of the magnetic force lines of the two magnetic fields, and increasing the suction force generated by the two magnetic fields on the two armatures. Brief Description of the Drawings

[0054] Figure 1 is a structural diagram of a magnetic latching relay provided by an embodiment of the present utility model;

[0055] Figure 2 is a structural diagram of a cross-section of a coil assembly provided by an embodiment of the present utility model;

[0056] Figure 3 is a three-dimensional exploded schematic diagram of a coil assembly provided by an embodiment of the present utility model;

[0057] Figure 4 is a schematic diagram of the direction of magnetic force lines in a magnetic latching relay provided by an embodiment of the present utility model;

[0058] Figure 5 is a structural diagram of another magnetic latching relay provided by an embodiment of the present utility model;

[0059] Figure 6 is a structural block diagram of a first isolation portion provided by an embodiment of the present utility model;

[0060] Figure 7 is a three-dimensional exploded schematic diagram of another coil assembly provided by an embodiment of the present utility model;

[0061] Figure 8 is a schematic diagram of the direction of magnetic force lines in another magnetic latching relay provided by an embodiment of the present utility model.

[0062] Description of the Reference Numerals:

[0063] 1-coil assembly, 2-two yokes, 3-first isolating part, 4-moving spring lead-out piece, 5-moving spring piece, 6-static spring lead-out piece, 7-pushing card, 8-armature assembly, 9-second isolating part, 11-multiple enameled wires, 12-multiple iron cores, 13-coil frame, 14-first pin, 15-second pin, 16-third pin, 17-fourth pin, 111-first enameled wire, 112-second enameled wire, 121-first iron core, 122-second iron core, 81-fixed bracket, 82-permanent magnet, 83-two armatures, 84-enclosing body. DETAILED DESCRIPTION

[0064] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0065] The material cost of the enameled wire in the coil assembly in the related art is too high. Based on this, one of the core concepts of the embodiment of the utility model is that the utility model provides a magnetic latching relay, which includes: a coil assembly and two yokes, the coil assembly includes multiple enameled wires and multiple iron cores, the multiple enameled wires are located outside the multiple iron cores, the two yokes are located at both ends of the multiple iron cores, and are respectively connected to the multiple iron cores, and a first isolation part is provided between adjacent iron cores among the multiple iron cores on the two yokes, so that suction is generated through the multiple enameled wires, and on the one hand, the magnetic lines of force between adjacent iron cores are partially isolated by the first isolation part, and part of the magnetic lines of force of adjacent iron cores are guided to bypass the first isolation part, thereby reducing the interference of the magnetic lines of force between adjacent iron cores. At the same time, the magnetic field generated by multiple enameled wires brings suction, so that the magnetic lines of force of multiple magnetic fields are partially superimposed, thereby increasing the overall suction in the specified direction. On the other hand, the setting of multiple enameled wires reduces the number of turns on each enameled wire when compared with the setting of a single enameled wire, while the total number of turns is the same, thereby reducing the number of turns of the outer ring of the enameled wire, making the total circumference of the multiple enameled wires shorter than the total circumference of the single enameled wire, shortening the total circumference of the enameled wire, and reducing the material used for the enameled wire to reduce costs. On the other hand, the setting of multiple enameled wires increases the total number of turns of the enameled wire when compared with the setting of a single enameled wire, while the total circumference of the enameled wire is the same, thereby increasing the suction generated by the enameled wire.

[0066] like Figure 1 , shows a structural diagram of a magnetic latching relay provided by an embodiment of the utility model, and the magnetic latching relay may specifically include: a coil assembly 1 and two yokes 2.

[0067] In the embodiment of the present invention, the coil assembly 1 may include a plurality of enameled wires 11 and a plurality of iron cores 12 .

[0068] In one embodiment, the number of the plurality of iron cores 12 can be two, including a first iron core 121 and a second iron core 122. The number of the plurality of iron cores 12 in the present utility model can be set according to actual needs, and at least two iron cores are sufficient. For the specific number of the plurality of iron cores 12, the present utility model does not make specific limitations here. In the following of the present utility model, two iron cores, namely the first iron core 121 and the second iron core 122, are taken as examples for specific description.

[0069] In the embodiment of the present utility model, a plurality of enameled wires 11 are located outside the plurality of iron cores 12.

[0070] In one embodiment, the coil assembly 1 may further include: coil bobbins 13 having the same number as the plurality of iron cores 12; each iron core is respectively disposed through a through hole of the corresponding coil bobbin 13; and each enameled wire is wound outside the corresponding coil bobbin 13. Specifically, the number of the plurality of iron cores 12 in the present utility model is two, and the number of the coil bobbins 13 is also two. The first iron core 121 is disposed through the through hole of the coil bobbin 13 corresponding to the first iron core 121, and the second iron core 122 is disposed through the through hole of the coil bobbin 13 corresponding to the second iron core 122.

[0071] Among them, the number of the plurality of through holes corresponds to the number of the plurality of iron cores 12, one iron core is disposed through one through hole, and the number of the plurality of enameled wires 11 also corresponds to the number of the plurality of iron cores 12. In the present utility model, taking two iron cores as a specific example, the number of the plurality of through holes is also two, including a first through hole and a second through hole, and the number of the plurality of enameled wires 11 is also two, including a first enameled wire 111 and a second enameled wire 112. The first iron core 121 is disposed through the first through hole, the second iron core 122 is disposed through the second through hole, and the first enameled wire 111 and the second enameled wire 112 are wound outside the coil bobbin 13, so that two magnetic fields can be generated by the first enameled wire 111 and the second enameled wire 112.

[0072] In one embodiment, the two yokes 2 include a first arm; the first arm is respectively connected to the first iron core 121 and the second iron core 122; the first iron core 121 and the second iron core 122 are arranged side by side along the extending direction of the first arm of the two yokes 2.

[0073] In one embodiment, the number of the plurality of enameled wires 11 is two, including a first enameled wire 111 and a second enameled wire 112. The winding direction of the first enameled wire 111 is the same as the winding direction of the second enameled wire 112, and the first enameled wire 111 and the second enameled wire 112 are connected in series, so that the magnetic pole directions generated by the first enameled wire 111 and the second enameled wire 112 are the same. Thus, through the arrangement that the winding directions of the first enameled wire 111 and the second enameled wire 112 are the same and they are connected in series, the two generated magnetic fields are two magnetic fields with the same magnetic pole direction, and the two magnetic fields are partially superimposed, thereby increasing the suction force brought by the magnetic field.

[0074] In an embodiment of the present utility model, two yokes 2 are located at both ends of a plurality of iron cores and are respectively connected to the plurality of iron cores 12. A first isolation part 3 is provided between adjacent iron cores among the plurality of iron cores 12 above the two yokes 2. Among them, the two yokes 2 can be L-shaped. The two yokes include a first arm and a second arm. The first arms of the two yokes 2 are respectively attached to both ends of the coil bobbin 13. The first arms of the two yokes 2 are respectively connected to the plurality of iron cores 12. The first isolation part 3 is arranged on the first arms of the two yokes 2. The second arm is connected to the first arm. The second arm can be perpendicularly connected to the first arm or can be connected at a certain inclination angle.

[0075] In one embodiment, the two yokes 2 may further include a second arm; the second arm is connected to the first arm; a first isolation part 3 is provided between the first iron core 121 and the second iron core 122 on the two yokes 2. The first isolation part 3 has an opening, and the opening faces the second arms of the two yokes 2. The position of the first iron core 121 corresponds to the opening direction of the first isolation part 3, and the position of the second iron core 122 corresponds to the closed direction of the first isolation part 3. When the first enameled wire 111 and the second enameled wire 112 are energized in the present utility model, two corresponding magnetic fields are generated. The first isolation part 3 in the present utility model is used to guide the direction of the magnetic force lines generated by the first enameled wire 111 and the second enameled wire 112 when they are energized, so as to avoid interference between the two magnetic fields generated by the two enameled wires, and try to avoid the magnetic force lines of the magnetic field generated by the first enameled wire 111 from entering the magnetic field of the second enameled wire 112, and the magnetic force lines of the magnetic field generated by the second enameled wire 112 from entering the magnetic field of the first enameled wire 111. It should be noted that the present utility model does not specifically limit the shape of the first isolation part 3 here. The shape of the first isolation part 3 can be U-shaped, or can be C-shaped or other shapes. The design of the shape of the first isolation part 3 only needs to achieve the purpose of reducing the interference of the magnetic fields generated by the two enameled wires and increasing the suction force brought by the magnetic fields generated by the two enameled wires.

[0076] In an embodiment of the present utility model, as Figure 2As shown in the figure, a structural diagram of a cross-section of a coil assembly provided by an embodiment of the present invention is shown. The coil assembly 1 includes a bobbin 13, an enameled wire (111 or 112), and an iron core (121 or 122). The iron core (121 or 122) passes through the through-hole of the bobbin 13, and the enameled wire (111 or 112) is wound outside the bobbin 13. Two yokes 2 are respectively arranged at both ends of the bobbin 13, and the two yokes 2 are respectively connected to both ends of the iron core (121 or 122). In the present invention, the iron core (121 or 122) is vertically arranged in the two bobbins 13, that is, the central axis of the iron core (121 or 122) is perpendicular to the bobbin 13. In the present invention, by winding the enameled wire (111 or 112) outside the bobbin 13, when the enameled wire (111 or 112) is energized, a magnetic field can be generated by the enameled wire (111 or 112), and both ends of the iron core (121 or 122) are two magnetic poles, and the intensity of the magnetic field increases with the increase in the number of turns of the enameled wire (111 or 112).

[0077] In one embodiment, the coil assembly 1 may further include a first pin 14, a second pin 15, a third pin 16, and a fourth pin 17; the first pin 14, the second pin 15, the third pin 16, and the fourth pin 17 are respectively arranged at the same end of the bobbin 13; the first pin 14 is connected to one end of the first enameled wire 111, the second pin 15 is connected to the other end of the first enameled wire 111 and is simultaneously connected to the third pin 16, the third pin 16 is connected to one end of the second enameled wire 112, and the fourth pin 17 is connected to the other end of the second enameled wire 112. In the present invention, the second pin 15 and the third pin 16 may be connected by a wire or may be connected by other connection methods. The first pin 14 and the fourth pin 17 are used to connect to the circuit or power supply outside the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are connected to the external circuit or power supply, and a magnetic field is generated when the first enameled wire 111 and the second enameled wire 112 are energized to bring suction force.

[0078] As Figure 3 shown, a three-dimensional exploded view of a coil assembly provided by an embodiment of the present invention is shown.

[0079] In an embodiment of the present utility model, the coil assembly 1 includes a coil bobbin 13, a first enameled wire 111, a second enameled wire 112, a first iron core 121, a second iron core 122, a first pin 14, a second pin 15, a third pin 16, and a fourth pin 17. The first iron core 121 and the second iron core 122 are respectively passed through two through holes of the coil bobbin 13. The first enameled wire 111 and the second enameled wire 112 are wound outside the coil bobbin 13. The winding directions of the first enameled wire 111 and the second enameled wire 112 are the same, and the first enameled wire 111 and the second enameled wire 112 are connected in series, so that the magnetic pole directions generated by the first enameled wire 111 and the second enameled wire 112 are the same, so that the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 are the same and partially superimposed, thereby increasing the suction force brought by the magnetic field.

[0080] In the present utility model, the first pin 14, the second pin 15, the third pin 16, and the fourth pin 17 are respectively arranged at the same end of the coil bobbin 13 and can pass through the coil bobbin 13. The first pin 14 is connected to one end of the first enameled wire 111. The second pin 15 is connected to the other end of the first enameled wire 111 and is simultaneously connected to the third pin 16. The third pin 16 is connected to one end of the second enameled wire 112. The fourth pin 17 is connected to the other end of the second enameled wire 112. In the present utility model, the first pin 14 and the fourth pin 17 are used to be connected to a circuit or a power supply outside the magnetic latching relay, so that the first coil enameled wire and the second coil enameled wire are energized with the external circuit or power supply, and a magnetic field is generated when the first enameled wire 111 and the second enameled wire 112 are energized to bring suction force.

[0081] In an embodiment of the present utility model, the two yokes 2 may include a first arm and a second arm. The first arm is connected to the first iron core 121 and the second iron core 122. The second arm is connected to the first arm. On the first arm of the two yokes 2, a first isolation portion 3 is provided at a position corresponding to at least a part of the first enameled wire 111. The first isolation portion 3 has an opening, which may be U-shaped, and the opening faces the second arm of the two yokes 2, so that the first iron core 121 corresponds to the opening direction of the first isolation portion 3, and the second iron core 122 corresponds to the closed direction of the first isolation portion 3. In the present utility model, the first isolation portion 3 is used to guide the direction of the magnetic force lines generated by the first enameled wire 111 and the second enameled wire 112 when energized, so as to avoid interference between the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112, and try to avoid the magnetic force lines of the magnetic field generated by the first enameled wire 111 flowing into the magnetic field generated by the second enameled wire 112, and the magnetic force lines of the magnetic field generated by the second enameled wire 112 flowing into the magnetic field generated by the first enameled wire 111.

[0082] As Figure 4As shown in the figure, a schematic diagram of the magnetic field line direction in a magnetic latching relay provided by an embodiment of the present invention is shown. The bold dashed line is the magnetic field line direction of the magnetic field generated by the first enameled wire 111, and the thinner dashed line is the magnetic field line direction of the magnetic field generated by the second enameled wire 112. The two yokes 2 prevent the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 from diffusing outwards, enclose the magnetic field lines of the generated magnetic fields between the two yokes 2, and play a role in guiding the magnetic field lines. The U-shaped first isolation part 3 can effectively block the magnetic field lines of the magnetic field generated by the first enameled wire 111 from directly entering the magnetic field generated by the second enameled wire 112, and the magnetic field lines of the magnetic field generated by the second enameled wire 112 from directly entering the magnetic field generated by the first enameled wire 111, guide the directions of the two magnetic field lines, and further enable more magnetic field lines to enter the second arms of the two yokes 2, increasing the suction force towards the second arms of the two yokes 2.

[0083] In an embodiment of the present invention, as Figure 1 shown, the magnetic latching relay may further include: a moving contact lead piece 4, a moving contact piece 5, a static contact lead piece 6, a push card 7, and an armature assembly 8; the two yokes further include second arms: the second arms are connected to the first arms; the first end of the moving contact piece 5 is connected to the first end of the push card 7, and the second end of the moving contact piece 5 is connected to one end of the moving contact lead piece 4; a moving contact is provided on the surface of the moving contact piece 5 facing the static contact lead piece 6; a static contact is provided on the surface of the static contact lead piece 6 facing the moving contact piece 5; the position of the static contact corresponds to the position of the moving contact; the second end of the push card 7 is connected to the armature assembly 8; the armature assembly 8 is located between the second arms of the two yokes 2.

[0084] In the present invention, when generating a magnetic field through the first enameled wire 111 and the second enameled wire 112, a suction force on the armature assembly 8 can be brought. By controlling the energization directions in the first enameled wire 111 and the second enameled wire 112, the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 can be changed. Further, the direction of the suction force on the armature assembly 8 can be controlled, and by controlling the rotation of the armature assembly 8, the push card 7 can be driven to generate a displacement, causing the moving contact piece 5 to also generate a displacement, and further, the contact state between the moving contact on the moving contact piece 5 and the static contact on the static contact lead piece 6 can be controlled. Among them, the contact state between the moving contact on the moving contact piece 5 and the static contact on the static contact lead piece 6 can include contact and non-contact.

[0085] In one embodiment, the armature assembly 8 may include: a fixed bracket 81, a permanent magnet 82, two armatures 83, and an enclosure 84; the permanent magnet 82 is stacked between the two armatures 83 to form an I shape and is fixed by the enclosure 84; a rotation hole is provided in the middle of the fixed bracket 81; the enclosure 84 is rotatably connected to the inside of the fixed bracket 81 through the rotation hole; a push arm is provided on the enclosure 84 in the direction towards the push card 7; the push arm is connected to the second end of the push card 7; the two armatures 83 rotate according to the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 and are attracted to the second arm of one of the two yokes 2; when the two armatures 83 rotate, the enclosure 84 rotates synchronously.

[0086] In the present utility model, two magnetic fields are generated by the first enameled wire 111 and the second enameled wire 112, thereby bringing suction forces to the two armatures 83. Since the magnetic poles of the permanent magnet 82 are fixed and the permanent magnet 82 is stacked with the two armatures 83, therefore, the two armatures 83 also have certain magnetism and the magnetic poles are the same as those of the permanent magnet 82. By controlling the energization directions in the first enameled wire 111 and the second enameled wire 112, the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 can be changed. Further, the directions of the suction forces on the two armatures 83 can be controlled, and then the rotation of the two armatures 83 can be controlled and they can be attracted to the second arm of one of the two yokes 2. When the two armatures 83 rotate, the enclosure 84 rotates synchronously. When the enclosure 84 rotates, the push arm on the enclosure 84 drives the push card 7 to displace, and further drives the moving reed 5 to also displace, and then the contact state between the moving contact on the moving reed 5 and the static contact on the static reed lead-out piece 6 can be controlled. The function of the permanent magnet 82 in the present utility model is that when the two armatures 83 are attracted to the second arm of one of the two yokes 2 and the first coil and the second coil are not energized, that is, when no magnetic field is generated, the two armatures 83 can continue to be attracted to the second arm of one of the two yokes 2.

[0087] An embodiment of the present utility model provides a magnetic latching relay, which includes: a coil assembly and two yokes; the coil assembly includes a plurality of enameled wires and a plurality of iron cores; the plurality of enameled wires are located outside the plurality of iron cores; the two yokes are located at both ends of the plurality of iron cores and are respectively connected to the plurality of iron cores; a first isolation portion is provided between adjacent iron cores among the plurality of iron cores on the two yokes, so as to generate suction force through the plurality of enameled wires, and on the one hand, partially isolate the magnetic lines of force between adjacent iron cores through the first isolation portion, guide part of the magnetic lines of force of adjacent iron cores to bypass the first isolation portion, reducing the interference of the magnetic lines of force between adjacent iron cores. At the same time, the magnetic field generated by the plurality of enameled wires generates suction force, causing partial superposition of the magnetic lines of force of the plurality of magnetic fields, increasing the overall suction force in the specified direction. On the other hand, the arrangement of the plurality of enameled wires, compared with the arrangement of a single enameled wire, with the same total number of turns, reduces the number of turns on each enameled wire, thereby reducing the number of turns on the outer circle of the enameled wire, making the total circumference of the plurality of enameled wires shorter than the total circumference of a single enameled wire, shortening the total circumference of the enameled wire, reducing the material consumption of the enameled wire to reduce costs. On the other hand, the arrangement of the plurality of enameled wires, compared with the arrangement of a single enameled wire, with the same total circumference of the enameled wire, increases the total number of turns of the enameled wire, thereby increasing the suction force generated by the enameled wire.

[0088] As Figure 5 , a structural diagram of another magnetic latching relay provided by an embodiment of the present utility model is shown. The magnetic latching relay may specifically include: a coil assembly 1 and two yokes 2.

[0089] In an embodiment of the present utility model, the coil assembly 1 may include a plurality of enameled wires 11 and a plurality of iron cores 12.

[0090] In one embodiment, the number of the plurality of iron cores 12 may be two, including a first iron core 121 and a second iron core 122. The number of the plurality of iron cores 12 in the present utility model may be set according to actual needs, and at least two iron cores are required. For the specific number of the plurality of iron cores 12, the present utility model does not make specific limitations here. In the following of the present utility model, two iron cores, namely the first iron core 121 and the second iron core 122, are taken as examples for specific description.

[0091] In an embodiment of the present utility model, the plurality of enameled wires 11 are located outside the plurality of iron cores 12.

[0092] In one embodiment, the coil assembly 1 may further include: bobbin holders 13 having the same number as the plurality of iron cores 12; each iron core is respectively inserted into a through hole of the corresponding bobbin holder 13; and each enameled wire 11 is wound outside the corresponding bobbin holder 13. Specifically, in the present utility model, the number of the plurality of iron cores 12 is two, and the number of the bobbin holders 13 is also two. The first iron core 121 is inserted into the through hole of the bobbin holder 13 corresponding to the first iron core 121, and the second iron core 122 is inserted into the through hole of the bobbin holder 13 corresponding to the second iron core 122.

[0093] Wherein, the number of the plurality of through holes corresponds to the number of the plurality of iron cores 12, one iron core is inserted into one through hole, and the number of the plurality of enameled wires 11 also corresponds to the number of the plurality of iron cores 12. In the present utility model, taking two iron cores as a specific example, the number of the plurality of through holes is also two, including a first through hole and a second through hole, and the number of the plurality of enameled wires 11 is also two, including a first enameled wire 111 and a second enameled wire 112. The first iron core 121 is inserted into the first through hole, the second iron core 122 is inserted into the second through hole, and the first enameled wire 111 and the second enameled wire 112 are wound outside the bobbin holder 13, so that two magnetic fields can be generated by the first enameled wire 111 and the second enameled wire 112.

[0094] In one embodiment, the two yokes 2 include a first arm and a second arm; the first arm is respectively connected to the first iron core 121 and the second iron core 122; the first iron core 121 and the second iron core 122 are arranged side by side along a direction perpendicular to the extension direction of the first arm of the two yokes 2.

[0095] In one embodiment, the number of the plurality of enameled wires 11 is two, including a first enameled wire 111 and a second enameled wire 112. The winding direction of the first enameled wire 111 is the same as the winding direction of the second enameled wire 112, and the first enameled wire 111 and the second enameled wire 112 are connected in series, so that the magnetic pole directions generated by the first enameled wire 111 and the second enameled wire 112 are the same. Thus, through the arrangement that the first enameled wire 111 and the second enameled wire 112 have the same winding direction and are connected in series, the two generated magnetic fields are two magnetic fields with the same magnetic pole direction, and the two magnetic fields are partially superimposed, thereby increasing the suction force brought by the magnetic field.

[0096] In the embodiment of the present utility model, the two yokes 2 are located at both ends of the plurality of iron cores and are respectively connected to the plurality of iron cores 12. A first isolation part 3 is provided between adjacent iron cores among the plurality of iron cores 12 on the two yokes 2. Wherein, the two yokes 2 can be L-shaped, the two yokes include a first arm and a second arm, the first arms of the two yokes 2 are respectively attached to both ends of the bobbin holder 13, the first arms of the two yokes 2 are respectively connected to the plurality of iron cores 12, the first isolation part 3 is arranged on the first arms of the two yokes 2, the second arm is connected to the first arm, and the second arm can be perpendicularly connected to the first arm or can be connected at a certain inclination angle.

[0097] In one embodiment, a first isolation portion 3 is provided between the first iron core 121 and the second iron core 122 on the two yokes 2; the first isolation portion 3 is arranged along the extending direction of the yoke, and completely isolates or divides two portions of the yoke corresponding to the first iron core 121 and the second iron core 122 and keeps partial connection.

[0098] In one embodiment, a first isolation portion 3 is provided between the first iron core 121 and the second iron core 122 on the two yokes 2. The first isolation portion 3 is arranged along the extending direction of the yoke, and completely isolates or divides two portions of the yoke corresponding to the first iron core 121 and the second iron core 122 and keeps partial connection. As Figure 5 shown in Figure 5 shown in, a first isolation portion 3 is provided between the first iron core 121 and the second iron core 122 on the two yokes 2. The first isolation portion 3 is arranged along the extending direction of the yoke, and completely isolates two portions of the yoke corresponding to the first iron core 121 and the second iron core 122. As Figure 6 shown, a structural block diagram of a first isolation portion provided in an embodiment of the present utility model is shown. A first isolation portion 3 is provided between the first iron core 121 and the second iron core 122 on the two yokes 2. The first isolation portion 3 is arranged along the extending direction of the yoke, and divides two portions of the yoke corresponding to the first iron core 121 and the second iron core 122 and keeps partial connection.

[0099] In the present utility model, two corresponding magnetic fields are generated when the first enameled wire 111 and the second enameled wire 112 are electrified. The first isolation portion 3 in the present utility model is used to guide the directions of the magnetic force lines of the magnetic fields generated when the first enameled wire 111 and the second enameled wire 112 are electrified, so as to avoid interference between the two magnetic fields generated by the two enameled wires, and try to avoid the magnetic force lines of the magnetic field generated by the first enameled wire 111 from entering the magnetic field of the second enameled wire 112, and the magnetic force lines of the magnetic field generated by the second enameled wire 112 from entering the magnetic field of the first enameled wire 111.

[0100] In an embodiment of the present utility model, as Figure 2As shown in the figure, a structural diagram of a cross-section of a coil assembly provided by an embodiment of the present invention is shown. The coil assembly 1 includes a coil bobbin 13, enameled wires (111 or 112), and iron cores (121 or 122). The iron cores (121 or 122) are inserted through the through holes of the coil bobbin 13, and the enameled wires (111 or 112) are wound around the outside of the coil bobbin 13. Two yokes 2 are respectively arranged at both ends of the coil bobbin 13, and the two yokes 2 are respectively connected to the two ends of the iron cores (121 or 122). In the present invention, the iron cores (121 or 122) are vertically arranged in the two coil bobbins 13, that is, the central axes of the iron cores (121 or 122) are perpendicular to the coil bobbins 13. In the present invention, by winding the enameled wires (111 or 112) around the outside of the coil bobbin 13, when the enameled wires (111 or 112) are energized, a magnetic field can be generated by the enameled wires (111 or 112), and the two ends of the iron cores (121 or 122) are two magnetic poles, and the intensity of the magnetic field increases with the increase in the number of turns of the enameled wires (111 or 112).

[0101] In one embodiment, the coil assembly 1 may further include a first pin 14, a second pin 15, a third pin 16, and a fourth pin 17; the first pin 14, the second pin 15, the third pin 16, and the fourth pin 17 are respectively arranged at the same end of the coil bobbin 13; the first pin 14 is connected to one end of the first enameled wire 111, the second pin 15 is connected to the other end of the first enameled wire 111 and is simultaneously connected to the third pin 16, the third pin 16 is connected to one end of the second enameled wire 112, and the fourth pin 17 is connected to the other end of the second enameled wire 112. In the present invention, the second pin 15 and the third pin 16 may be connected by a wire or may be connected by other connection methods. The first pin 14 and the fourth pin 17 are used to connect to the circuit or power supply outside the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are connected to the external circuit or power supply, and the first enameled wire 111 and the second enameled wire 112 are energized to generate a magnetic field to bring suction force.

[0102] As Figure 7 shown, a three-dimensional exploded view of another coil assembly provided by an embodiment of the present invention is shown.

[0103] In the embodiment of the present utility model, the coil assembly 1 includes a coil bobbin 13, a first enameled wire 111, a second enameled wire 112, a first iron core 121, a second iron core 122, a first pin 14, a second pin 15, a third pin 16, and a fourth pin 17. The first iron core 121 and the second iron core 122 are respectively inserted into two through holes of the coil bobbin 13. The first enameled wire 111 and the second enameled wire 112 are wound outside the coil bobbin 13. The winding directions of the first enameled wire 111 and the second enameled wire 112 are the same, and the first enameled wire 111 and the second enameled wire 112 are connected in series, so that the magnetic pole directions generated by the first enameled wire 111 and the second enameled wire 112 are the same, thereby making the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 the same and partially superimposed, thus increasing the suction force brought by the magnetic field.

[0104] In the present utility model, the first pin 14, the second pin 15, the third pin 16, and the fourth pin 17 are respectively arranged at the same end of the coil bobbin 13 and can pass through the coil bobbin 13. The first pin 14 is connected to one end of the first enameled wire 111. The second pin 15 is connected to the other end of the first enameled wire 111 and is simultaneously connected to the third pin 16. The third pin 16 is connected to one end of the second enameled wire 112. The fourth pin 17 is connected to the other end of the second enameled wire 112. In the present utility model, the first pin 14 and the fourth pin 17 are used to connect to the circuit or power supply outside the magnetic latching relay, so that the first coil enameled wire and the second coil enameled wire are energized with the external circuit or power supply, and the first enameled wire 111 and the second enameled wire 112 are energized to generate a magnetic field to bring suction force.

[0105] In the embodiment of the present utility model, a first isolation portion 3 is provided on the two yokes 2 between the first iron core 121 and the second iron core 122. The first isolation portion 3 is arranged along the extending direction of the yoke, and completely isolates the two corresponding portions of the yoke corresponding to the first iron core 121 and the second iron core 122. In the present utility model, the first isolation portion 3 can also divide and keep partial connection of the two corresponding portions of the yoke corresponding to the first iron core 121 and the second iron core 122, such as Figure 6 shown. In the present utility model, the first isolation portion 3 is used to guide the direction of the magnetic force lines of the magnetic field generated when the first enameled wire 111 and the second enameled wire 112 are energized, thereby avoiding mutual interference between the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112, and minimizing the inflow of the magnetic force lines of the magnetic field generated by the first enameled wire 111 into the magnetic field generated by the second enameled wire 112, and the inflow of the magnetic force lines of the magnetic field generated by the second enameled wire 112 into the magnetic field generated by the first enameled wire 111.

[0106] such as Figure 8As shown in the figure, a schematic diagram of the magnetic field line direction in another magnetic latching relay provided by an embodiment of the present utility model is shown. Among them, the bold dashed line is the magnetic field line direction of the magnetic field generated by the first enameled wire 111, and the thinner dashed line is the magnetic field line direction of the magnetic field generated by the second enameled wire 112. The two yokes 2 prevent the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 from diffusing outwards, enclose the magnetic field lines of the generated magnetic fields between the two yokes 2, and play a role in guiding the magnetic field lines. The first isolation part 3 completely isolates or divides and keeps part of the connection between the two parts of the yoke corresponding to the first iron core 121 and the second iron core 122, which can effectively block the magnetic field lines of the magnetic field generated by the first enameled wire 111 from directly entering the magnetic field generated by the second enameled wire 112, and the magnetic field lines of the magnetic field generated by the second enameled wire 112 from directly entering the magnetic field generated by the first enameled wire 111, guide the directions of the two magnetic field lines, and further enable more magnetic field lines to enter the second arms of the two yokes 2, increasing the suction force towards the second arms of the two yokes 2.

[0107] In an embodiment of the present utility model, as Figure 5 shown, the magnetic latching relay may further include: a moving contact lead piece 4, a moving contact piece 5, a static contact lead piece 6, a pushing card 7, and an armature assembly 8; the two yokes further include second arms: the second arms are connected to the first arms; the first end of the moving contact piece 5 is connected to the first end of the pushing card 7, and the second end of the moving contact piece 5 is connected to one end of the moving contact lead piece 4; a moving contact is provided on the surface of the moving contact piece 5 facing the static contact lead piece 6; a static contact is provided on the surface of the static contact lead piece 6 facing the moving contact piece 5; the position of the static contact corresponds to the position of the moving contact; the second end of the pushing card 7 is connected to the armature assembly 8; the armature assembly 8 is located between the second arms of the two yokes 2.

[0108] In the present utility model, when generating a magnetic field through the first enameled wire 111 and the second enameled wire 112, it can bring a suction force to the armature assembly 8. By controlling the energization directions in the first enameled wire 111 and the second enameled wire 112, the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 can be changed. Further, the direction of the suction force on the armature assembly 8 can be controlled, and by controlling the rotation of the armature assembly 8, the pushing card 7 can be driven to displace, causing the moving contact piece 5 to also displace, and further the contact state between the moving contact on the moving contact piece 5 and the static contact on the static contact lead piece 6 can be controlled. Among them, the contact state between the moving contact on the moving contact piece 5 and the static contact on the static contact lead piece 6 can include contact and non-contact.

[0109] In one embodiment, the armature assembly 8 may include: a fixed bracket 81, a permanent magnet 82, two armatures 83, and an enclosure 84; the permanent magnet 82 is stacked between the two armatures 83 to form an I-shape and is fixed by the enclosure 84; a rotation hole is provided in the middle of the fixed bracket 81; the enclosure 84 is rotatably connected to the inside of the fixed bracket 81 through the rotation hole; a push arm is provided on the enclosure 84 in the direction towards the push card 7; the push arm is connected to the second end of the push card 7; the two armatures 83 rotate according to the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 and are attracted to the second arm of one of the two yokes 2; when the two armatures 83 rotate, the enclosure 84 rotates synchronously.

[0110] In the present utility model, two magnetic fields are generated by the first enameled wire 111 and the second enameled wire 112, thereby bringing suction forces to the two armatures 83. Since the magnetic poles of the permanent magnet 82 are fixed and the permanent magnet 82 is stacked with the two armatures 83, therefore, the two armatures 83 also have certain magnetism and the magnetic poles are the same as those of the permanent magnet 82. By controlling the energization directions in the first enameled wire 111 and the second enameled wire 112, the magnetic pole directions of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 can be changed. Further, the directions of the suction forces on the two armatures 83 can be controlled, and then the rotation of the two armatures 83 can be controlled and they can be attracted to the second arm of one of the two yokes 2. When the two armatures 83 rotate, the enclosure 84 rotates synchronously. When the enclosure 84 rotates, the push arm on the enclosure 84 drives the push card 7 to displace, and further drives the moving reed 5 to also generate displacement, and then the contact state between the moving contact on the moving reed 5 and the static contact on the static reed lead-out piece 6 can be controlled. The function of the permanent magnet 82 in the present utility model is that when the two armatures 83 are attracted to the second arm of one of the two yokes 2 and the first coil and the second coil are not energized, that is, when no magnetic field is generated, the two armatures 83 can continue to be attracted to the second arm of one of the two yokes 2.

[0111] In one embodiment, the magnetic latching relay may further include: an armature assembly 8; the armature assembly 8 may include: two armatures 83; the two armatures 83 correspond to a part of the two yokes 2, and a second isolation part 9 is provided at a position corresponding to the first isolation part 3 of the two armatures 83 and the two yokes 2; the width of the second isolation part 9 corresponds to the width of the first isolation part 3. Thus, when the magnetic force lines of the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 pass through the two armatures 83, due to the setting of the second isolation part 9, the directions of the magnetic force lines of the two magnetic fields are guided, avoiding the interference of the magnetic force lines of the two magnetic fields, and increasing the suction forces generated by the two magnetic fields on the two armatures 83.

[0112] An embodiment of the present utility model provides a magnetic latching relay, which includes: a coil assembly and two yokes; the coil assembly includes a plurality of enameled wires and a plurality of iron cores; the plurality of enameled wires are located outside the plurality of iron cores; the two yokes are located at both ends of the plurality of iron cores and are respectively connected to the plurality of iron cores; a first isolation portion is provided between adjacent iron cores among the plurality of iron cores on the two yokes, so as to generate suction force through the plurality of enameled wires, and on the one hand, partially isolate the magnetic lines of force between adjacent iron cores through the first isolation portion, guide part of the magnetic lines of force of adjacent iron cores to bypass the first isolation portion, reducing the interference of the magnetic lines of force between adjacent iron cores. At the same time, the suction force is generated by the plurality of enameled wires to generate a magnetic field, and part of the magnetic lines of force of the plurality of magnetic fields are superimposed, increasing the overall suction force in the specified direction. On the other hand, the setting of the plurality of enameled wires, compared with the setting of a single enameled wire, with the same total number of turns, reduces the number of turns on each enameled wire, thereby reducing the number of turns on the outer circle of the enameled wire, making the total circumference of the plurality of enameled wires shorter than the total circumference of a single enameled wire, shortening the total circumference of the enameled wire, reducing the material used for the enameled wire to reduce costs. On the other hand, the setting of the plurality of enameled wires, compared with the setting of a single enameled wire, with the same total circumference of the enameled wire, increases the total number of turns of the enameled wire, thereby increasing the suction force generated by the enameled wire.

[0113] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0114] Although the preferred embodiments of the embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present utility model.

[0115] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or terminal device including the said element.

[0116] The above has introduced in detail a magnetic latching relay provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A magnetic latching relay, characterized in that: include: a coil assembly and two yokes; The coil assembly includes a plurality of enameled wires and a plurality of iron cores; The plurality of enameled wires are located outside the plurality of iron cores; The two yokes are located at two ends of the plurality of iron cores and are respectively connected to the plurality of iron cores; a first isolation portion is provided on the two yokes and between adjacent iron cores among the plurality of iron cores.

2. The magnetic latching relay according to claim 1, characterized in that: The number of the plurality of cores is two, including a first core and a second core.

3. The magnetic latching relay according to claim 2, characterized in that: The two yokes include a first arm; the first arm is connected to the first iron core and the second iron core respectively; The first iron core and the second iron core are arranged side by side along the extending direction of the first arms of the two yokes.

4. The magnetic latching relay according to claim 3, characterized in that: The two yokes further include a second arm; the second arm is connected to the first arm; The first isolating portion is provided on the two yokes and located between the first iron core and the second iron core; the first isolating portion has an opening, and the opening faces the second arms of the two yokes.

5. The magnetic latching relay according to claim 2, characterized in that: The two yokes include a first arm; the first arm is connected to the first iron core and the second iron core respectively; The first iron core and the second iron core are arranged side by side along an extending direction of the first arms perpendicular to the two yokes.

6. The magnetic latching relay according to claim 5, characterized in that: The first isolating portion is provided on the two yokes between the first core and the second core; the first isolating portion is provided along the extension direction of the yoke to completely isolate or divide the two parts of the yoke corresponding to the first core and the second core and keep them partially connected.

7. The magnetic latching relay according to claim 6, characterized in that: The magnetic latching relay further comprises: an armature assembly; the armature assembly comprises: two armatures; The two armatures correspond to the two yoke parts, and a second isolating portion is provided at a position corresponding to the first isolating portion of the two armatures and the two yokes; the width of the second isolating portion corresponds to the width of the first isolating portion.

8. The magnetic latching relay according to claim 1, 4 or 6, characterized in that: The coil assembly further includes: a coil frame having the same number as the plurality of iron cores; Each of the iron cores is respectively inserted into a through hole of the corresponding coil frame; and each of the enameled wires is wound around the outside of the corresponding coil frame.

9. The magnetic latching relay according to claim 8, characterized in that: The number of the plurality of enameled wires is two, including a first enameled wire and a second enameled wire; The winding direction of the first enameled wire is the same as the winding direction of the second enameled wire, and the first enameled wire and the second enameled wire are connected in series, so that the magnetic poles generated by the first enameled wire and the second enameled wire have the same direction.

10. The magnetic latching relay according to claim 9, characterized in that: The coil assembly also includes a first pin, a second pin, a third pin and a fourth pin; the first pin, the second pin, the third pin and the fourth pin are respectively arranged at the same end of the coil frame; the first pin is connected to one end of the first enameled wire, the second pin is connected to the other end of the first enameled wire, and is also connected to the third pin, the third pin is connected to one end of the second enameled wire, and the fourth pin is connected to the other end of the second enameled wire.

11. The magnetic latching relay according to claim 3 or 5, characterized in that: The magnetic latching relay further comprises: a movable spring lead-out piece, a movable spring piece, a static spring lead-out piece, a push card and an armature assembly; the two yokes further comprise a second arm; the second arm is connected to the first arm; The first end of the movable spring piece is connected to the first end of the push card, and the second end of the movable spring piece is connected to one end of the movable spring lead-out piece; a movable contact is provided on one side of the movable spring piece facing the static spring lead-out piece; a static contact is provided on one side of the static spring lead-out piece facing the movable spring piece; the position of the static contact corresponds to the position of the movable contact; The second end of the push card is connected to the armature assembly; The armature assembly is located between the second arms of the two yokes.

12. The magnetic latching relay according to claim 11, characterized in that: The number of the plurality of enameled wires is two, including a first enameled wire and a second enameled wire; The armature assembly comprises: a fixed bracket, a permanent magnet, two armatures and an enclosure; The permanent magnetic steel is stacked between the two armatures to form an I-shape and is fixed by the containing body; A rotation hole is provided in the middle of the fixing bracket; the inclusion body is rotatably connected to the fixing bracket through the rotation hole; The containing body is provided with a push arm in the direction toward the push card; the push arm is connected to the second end of the push card; The two armatures rotate according to the magnetic pole direction of the magnetic field generated by the first enameled wire and the second enameled wire, and are attracted to the second arm of one of the two yokes; when the two armatures rotate, the enclosing body rotates synchronously.

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