Magnetic latching electromagnetic device

Abstract

A magnetic latching relay, comprising a coil assembly (1) and two yokes (2). The coil assembly (1) comprises a plurality of enameled wires (11) and a plurality of iron cores (12); the plurality of enameled wires (11) are located outside the plurality of iron cores (12); the two yokes (2) are located at two ends of the plurality of iron cores (12) and are respectively connected to the plurality of iron cores (12); and a first isolation portion (3) is provided on each of the two yokes (2) between adjacent iron cores among the plurality of iron cores (12), so that an attractive force is generated by means of the plurality of enameled wires (11), and interferences of magnetic field lines between adjacent enameled wires are reduced by means of the first isolation portions (3). Moreover, when the total number of turns on the plurality of enameled wires (11) is identical, the provision of the plurality of enameled wires (11) reduces the number of turns on each enameled wire, thereby shortening the total perimeter of the enameled wires and reducing costs. In addition, when the total perimeter of the enameled wires is identical, the provision increases the total number of turns on the enameled wires, thereby increasing the attractive force.

Description

A magnetic latching electromagnetic device

[0001] The present application claims priority to the Chinese patent application No. 202410986012.X, filed on July 22, 2024, and entitled "A magnetic latching electromagnetic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of magnetic latching relays, in particular to a magnetic latching relay. BACKGROUND

[0003] A relay is a control device, which has a control system (also known as an input loop) and a controlled system (also known as an output loop), and is usually applied in an automatic control circuit. The relay is actually a "automatic switch" that uses a small current to control a large current. Therefore, it plays a role of automatic adjustment, safety protection, and circuit conversion in the circuit. The magnetic latching relay is a kind of relay, which also plays a role of automatic connection and disconnection of the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay completely depends on the action of the permanent magnet. When the coil of the magnetic latching relay passes through the rated voltage, a certain magnetic field is generated, one end of the armature assembly generates a repulsive force with the yoke, and the other end of the yoke assembly generates 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 the related art, in order to maintain a certain attractive force of the coil assembly of the magnetic latching relay, the number of turns of the enameled wire in the coil assembly is maintained. The length of one turn of the outer enameled wire is more than that of the inner enameled wire, which further increases the material cost of the enameled wire in the coil assembly.

[0004] SUMMARY

[0005] In view of the above problems, the present application is proposed to provide a magnetic latching relay which overcomes the above problems or at least partially solves the above problems.

[0006] To solve the above problems, the present application discloses a magnetic latching relay, comprising:

[0007] a coil assembly and two yokes;

[0008] The coil assembly comprises a plurality of enameled wires and a plurality of iron cores.

[0009] The plurality of enameled wires are located outside the plurality of iron cores.

[0010] The two yokes are located at two ends of the plurality of iron cores and are connected with the plurality of iron cores respectively. A first isolation part is arranged between adjacent iron cores of the plurality of iron cores on the two yokes.

[0011] Optionally, the plurality of iron cores is two, including a first iron core and a second iron core.

[0012] Optionally, the two yoke irons include a first arm; the first arm is connected with the first iron core and the second iron core respectively;

[0013] The first iron core and the second iron core are arranged side by side along the extension direction of the first arm of the two yoke irons.

[0014] Optionally, the two yoke irons further include a second arm; the second arm is connected with the first arm;

[0015] The first isolation part is arranged between the first iron core and the second iron core on the two yoke irons; the first isolation part has an opening, and the opening faces the second arm of the two yoke irons.

[0016] Optionally, the coil assembly further includes a plurality of coil holders with the same number of iron cores;

[0017] The iron cores are respectively arranged in the through holes of the corresponding coil holders; and the plurality of enameled wires are wound outside the coil holders.

[0018] Optionally, the plurality of enameled wires is two, including a first enameled wire and a second enameled wire;

[0019] The first enameled wire is wound in the same direction as the second enameled wire, and the first enameled wire and the second enameled wire are connected in series, so that the first enameled wire and the second enameled wire have the same magnetic pole direction.

[0020] 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 arranged at the same end of the coil holder respectively; one end of the first enameled wire is connected with the first pin, the other end of the first enameled wire is connected with the second pin, and the second pin is also connected with the third pin; one end of the second enameled wire is connected with the third pin, and the other end of the second enameled wire is connected with the fourth pin.

[0021] Optionally, the magnetic latching relay further includes a moving spring lead-out sheet, a moving spring sheet, a static spring lead-out sheet, a push card and an armature assembly; the two yoke irons further include a second arm; the second arm is connected with the first arm;

[0022] The first end of the moving spring sheet is connected with the first end of the push card, and the second end of the moving spring sheet is connected with one end of the moving spring lead-out sheet; one side of the moving spring sheet facing the static spring lead-out sheet is provided with a moving contact; one side of the static spring lead-out sheet facing the moving spring sheet is provided with a static contact; the position of the static contact corresponds to the position of the moving contact;

[0023] The second end of the push card is connected with the armature assembly.

[0024] The armature assembly is located between the second arms of the two yoke irons.

[0025] Optionally, the armature assembly comprises a fixed support, a permanent magnetic steel, two armatures and an accommodating body.

[0026] The permanent magnetic steel is stacked between the two armatures to form an I-shaped structure, and is fixed by the accommodating body.

[0027] The middle part of the fixed support is provided with a rotating hole; the accommodating body is rotatably connected in the fixed support through the rotating hole.

[0028] The accommodating body is provided with a push arm in the direction of the push card; the push arm is connected with the second end of the push card.

[0029] The two armatures rotate according to the magnetic pole direction of the magnetic field generated by the first and second enameled wires, and are attracted to the second arm of one of the two yoke irons; the accommodating body rotates synchronously when the two armatures rotate.

[0030] Optionally, the number of the plurality of iron cores is two, comprising a first iron core and a second iron core.

[0031] Optionally, the two yoke irons comprise a first arm; the first arm is connected with the first iron core and the second iron core respectively.

[0032] The first iron core and the second iron core are arranged side by side along the extension direction perpendicular to the first arms of the two yoke irons.

[0033] Optionally, a first isolation part is arranged between the first iron core and the second iron core on the two yoke irons; the first isolation part is arranged along the extension direction of the yoke iron, and completely isolates or divides and partially connects the two parts of the yoke iron corresponding to the first iron core and the second iron core.

[0034] Optionally, the magnetic latching relay further comprises an armature assembly; the armature assembly comprises two armatures.

[0035] The two armatures correspond to the two yoke iron parts, and the second isolation part is arranged at the position corresponding to the first isolation part of the two armatures and the two yoke iron parts; the width of the second isolation part corresponds to the width of the first isolation part.

[0036] Optionally, the coil assembly further comprises: a plurality of coil frames corresponding to the plurality of iron cores;

[0037] Each of the iron cores is arranged in the through hole of the corresponding coil frame, and each of the enameled wires is wound outside the corresponding coil frame.

[0038] Optionally, the plurality of enameled wires are connected in series.

[0039] Optionally, the plurality of enameled wires comprises two enameled wires, i.e., a first enameled wire and a second enameled wire.

[0040] The first enameled wire is wound in the same direction as the second enameled wire, and the first enameled wire and the second enameled wire are connected in series, so that the first enameled wire and the second enameled wire have the same magnetic pole direction.

[0041] Optionally, the coil assembly further comprises 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 arranged at the same end of the coil frame; one end of the first enameled wire is connected to the first pin, the other end of the first enameled wire is connected to the second pin, and the second pin is also connected to the third pin; one end of the second enameled wire is connected to the third pin, and the other end of the second enameled wire is connected to the fourth pin.

[0042] Optionally, the magnetic latching relay further comprises: a moving spring lead-out sheet, a moving spring sheet, a static spring lead-out sheet, a push card and an armature assembly; the two yoke irons further comprise a second arm; the second arm is connected to the first arm;

[0043] The first end of the moving spring sheet is connected to the first end of the push card, and the second end of the moving spring sheet is connected to one end of the moving spring lead-out sheet; one side of the moving spring sheet facing the static spring lead-out sheet is provided with a moving contact; one side of the static spring lead-out sheet facing the moving spring sheet is provided with a static contact; the position of the static contact corresponds to the position of the moving contact.

[0044] The second end of the push card is connected to the armature assembly.

[0045] The armature assembly is located between the second arms of the two yoke irons.

[0046] Optionally, the armature assembly comprises: a fixed support, a permanent magnet steel, two armatures and an accommodating body.

[0047] The permanent magnet steel is stacked between the two armatures to form an I-shaped structure and is fixed by the containing body;

[0048] The middle part of the fixed support is provided with a rotating hole; the containing body is rotatably connected to the fixed support through the rotating hole;

[0049] The containing body is provided with a pushing arm in the direction of the pushing card; the pushing arm is connected to the second end of the pushing card;

[0050] The two armatures rotate according to the magnetic pole direction of the magnetic field generated by the first and second enameled wires and are attracted to the second arm of one of the two yoke irons; the containing body rotates synchronously when the two armatures rotate.

[0051] The embodiments of the present application have the following advantages:

[0052] The magnetic latching relay provided by the embodiments of the present application comprises a coil assembly and two yoke irons; the coil assembly comprises a plurality of enameled wires and a plurality of iron cores; the plurality of enameled wires are wound outside the plurality of iron cores; the two yoke irons are located at two ends of the plurality of iron cores and are connected to the plurality of iron cores respectively; a first isolation part is arranged between adjacent iron cores on the two yoke irons, thereby generating an attractive force through the plurality of enameled wires; on one hand, the first isolation part partially isolates the magnetic lines of force between the adjacent iron cores, guides part of the magnetic lines of force of the adjacent iron cores to bypass the first isolation part, reduces the interference of the magnetic lines of force between the adjacent iron cores, and simultaneously generates an attractive force through the magnetic field generated by the plurality of enameled wires, so that part of the magnetic lines of force of the plurality of magnetic fields are superimposed, thereby increasing the overall attractive force in a specified direction; on the other hand, compared with the single enameled wire, the total number of turns is the same, the number of turns on each enameled wire is reduced, the number of turns of the outer circle of the enameled wire is reduced, the total length of the plurality of enameled wires is shorter than that of the single enameled wire, the total length of the enameled wire is shortened, the material of the enameled wire is reduced, and the cost is reduced; on the other hand, compared with the single enameled wire, the total length of the enameled wire is the same, the total number of turns of the enameled wire is increased, and the attractive force generated by the enameled wire is improved.

[0053] On the other hand, the number of the plurality of iron cores of the magnetic latching relay in the present application 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, thereby generating 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 attractive forces in the same direction.

[0054] In another aspect, the first core and the second core of the magnetic latching relay are arranged side by side along the extension direction of the first arm of the two yokes, and the first isolation part is arranged between the first core and the second core on the two yokes, the first isolation part has an opening, and the opening faces the second arm of the two yokes, the magnetic force lines of the corresponding magnetic fields of the first core and the second core arranged side by side along the extension direction of the first arm of the two yokes are guided through the first isolation part, the mutual interference of the two magnetic fields is reduced, and the suction force generated by the two magnetic fields is increased.

[0055] In another aspect, the first core and the second core of the magnetic latching relay are arranged side by side along the extension direction of the first arm of the two yokes, and the first isolation part is arranged between the first core and the second core on the two yokes, the first isolation part has an opening, and the opening faces the second arm of the two yokes, the magnetic force lines of the corresponding magnetic fields of the first core and the second core arranged side by side along the extension direction of the first arm of the two yokes are guided through the first isolation part, the mutual interference of the two magnetic fields is reduced, and the suction force generated by the two magnetic fields is increased.

[0056] In another aspect, the first core and the second core of the magnetic latching relay are arranged side by side along the extension direction of the first arm of the two yokes, and the first isolation part is arranged between the first core and the second core on the two yokes, the first isolation part has an opening, and the opening faces the second arm of the two yokes, the magnetic force lines of the corresponding magnetic fields of the first core and the second core arranged side by side along the extension direction of the first arm of the two yokes are guided through the first isolation part, the mutual interference of the two magnetic fields is reduced, and the suction force generated by the two magnetic fields is increased. BRIEF DESCRIPTION OF DRAWINGS

[0057] FIG. 1 is a structural diagram of a magnetic latching relay according to an embodiment of the present application;

[0058] FIG. 2 is a structural diagram of a cross section of a coil assembly according to an embodiment of the present application;

[0059] FIG. 3 is a perspective exploded view of a coil assembly according to an embodiment of the present application;

[0060] FIG. 4 is a schematic diagram of the direction of magnetic force lines in a magnetic latching relay according to an embodiment of the present application;

[0061] FIG. 5 is a structural diagram of another magnetic latching relay according to an embodiment of the present application;

[0062] FIG. 6 is a structural block diagram of a first isolation part according to an embodiment of the present application;

[0063] FIG. 7 is a perspective exploded view of another coil assembly according to an embodiment of the present application;

[0064] FIG. 8 is a schematic diagram of the direction of magnetic force lines in another magnetic latching relay according to an embodiment of the present application.

[0065] BRIEF DESCRIPTION OF DRAWINGS: 1-coil assembly, 2-two yokes, 3-first isolation portion, 4-moving spring lead-out piece, 5-moving spring piece, 6-static spring lead-out piece, 7-push card, 8-iron core assembly, 9-second isolation portion, 11-plurality of enameled wires, 12-plurality of iron cores, 13-coil holder, 14-first lead pin, 15-second lead pin, 16-third lead pin, 17-fourth lead pin, 111-first enameled wire, 112-second enameled wire, 121-first iron core, 122-second iron core, 81-fixing support, 82-permanent magnet, 83-two armatures, 84-enclosing body. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0067] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in a "or" relationship.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0069] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0071] 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 ideas of the embodiments of the present application is that the present application provides a magnetic latching relay, which comprises a coil assembly and two yokes, the coil assembly comprises a plurality of enameled wires and a plurality of cores, the plurality of enameled wires are located outside the plurality of cores, the two yokes are located at two ends of the plurality of cores and are connected with the plurality of cores respectively, and a first isolation part is arranged between adjacent cores of the plurality of cores on the two yokes. Thus, the suction force is generated by the plurality of enameled wires, and on the one hand, the magnetic lines of force between the adjacent cores are partially isolated by the first isolation part, and part of the magnetic lines of force of the adjacent cores are guided to bypass the first isolation part, thereby reducing the interference of the magnetic lines of force between the adjacent cores. At the same time, the magnetic field generated by the plurality of enameled wires brings the suction force, and part of the magnetic lines of force of the plurality of magnetic fields are superimposed, thereby increasing the overall suction force in the specified direction. On the other hand, compared with the single enameled wire, the number of turns of each enameled wire is reduced under the condition that the total number of turns is the same, thereby reducing the number of turns of the outer circle of the enameled wire, shortening the total circumference of the plurality of enameled wires, reducing the material of the enameled wire to reduce the cost. On the other hand, compared with the single enameled wire, the total number of turns of the enameled wire is increased under the condition that the total circumference of the enameled wire is the same, thereby improving the suction force generated by the enameled wire.

[0072] As shown in FIG. 1, a structure diagram of a magnetic latching relay provided by the embodiments of the present application is shown, and the magnetic latching relay can specifically comprise a coil assembly 1 and two yokes 2.

[0073] In the embodiments of the present application, the coil assembly 1 can comprise a plurality of enameled wires 11 and a plurality of cores 12.

[0074] In some embodiments, 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 application can be set according to actual needs, and at least two iron cores are required. The specific number of the plurality of iron cores 12 is not limited in the present application. Hereinafter, two iron cores, i.e., the first iron core 121 and the second iron core 122, are taken as examples for specific description.

[0075] In the embodiments of the present application, the plurality of enameled wires 11 are located outside the plurality of iron cores 12.

[0076] In some embodiments, the coil assembly 1 can further include a plurality of bobbin frames 13, each of which is equal in number to the plurality of iron cores 12; each iron core is respectively arranged in a through hole of the corresponding bobbin frame 13; and each enameled wire is wound outside the corresponding bobbin frame 13. Specifically, the number of the plurality of iron cores 12 in the present application is two, and the number of the plurality of bobbin frames 13 is also two. The first iron core 121 is arranged in the through hole of the bobbin frame 13 corresponding to the first iron core 121, and the second iron core 122 is arranged in the through hole of the bobbin frame 13 corresponding to the second iron core 122.

[0077] In some embodiments, the number of the plurality of through holes corresponds to the number of the plurality of iron cores 12, one iron core is arranged in 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. Taking two iron cores as a specific example in the present application, 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 arranged in the first through hole, the second iron core 122 is arranged in the second through hole, and the first enameled wire 111 and the second enameled wire 112 are wound outside the bobbin frame 13. Thus, two magnetic fields can be generated by the first enameled wire 111 and the second enameled wire 112.

[0078] In some embodiments, the two yoke irons 2 include first arms; the first arms are respectively connected with the first iron core 121 and the second iron core 122; and the first iron core 121 and the second iron core 122 are arranged side by side along the extension direction of the first arms of the two yoke irons 2.

[0079] In some embodiments, the plurality of enameled wires 11 are connected in series. The plurality of enameled wires 11 are wound in the same direction. Thus, by connecting the plurality of enameled wires 11 in series and winding in the same direction, the magnetic pole directions of the plurality of enameled wires 11 are the same, i.e., the plurality of magnetic fields generated by the plurality of enameled wires 11 are a plurality of magnetic fields with the same magnetic pole direction, and the plurality of magnetic fields are partially superimposed, thereby increasing the suction force brought by the magnetic field.

[0080] In some embodiments, the number of the plurality of enameled wires 11 is two, including a first enameled wire 111 and a second enameled wire 112, the first enameled wire 111 is wound in the same direction as 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, thereby the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 are the same in magnetic pole direction, and the two magnetic fields are partially superimposed, thereby increasing the suction force brought by the magnetic field.

[0081] In the embodiments of the present application, the two yokes 2 are located at the two ends of the plurality of cores and are connected with the plurality of cores 12 respectively, and the upper portions of the two yokes 2 are provided with the first isolation portions 3 between the adjacent cores in the plurality of cores 12. The two yokes 2 can be L-shaped, and the two yokes 2 include first arms and second arms, the first arms of the two yokes 2 are respectively attached to the two ends of the coil holder 13, the first arms of the two yokes 2 are connected with the plurality of cores 12 respectively, the first isolation portions 3 are arranged on the first arms of the two yokes 2, and the second arms are connected with the first arms. The second arms can be connected with the first arms perpendicularly or at a certain inclination angle.

[0082] In some embodiments, the two yokes 2 can further include second arms, the second arms are connected with the first arms, and the first isolation portions 3 are arranged on the two yokes 2 between the first core 121 and the second core 122, the first isolation portions 3 have openings, and the openings are directed to the second arms of the two yokes 2. The position of the first core 121 corresponds to the opening direction of the first isolation portion 3, and the position of the second core 122 corresponds to the closed direction of the first isolation portion 3. In the present application, when the first enameled wire 111 and the second enameled wire 112 are electrified, two corresponding magnetic fields are generated. The first isolation portion 3 in the present application is used to guide the direction of the magnetic force lines of the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 when electrified, thereby avoiding the mutual interference of the two magnetic fields generated by the two enameled wires, and trying to avoid the magnetic force lines of the magnetic field generated by the first enameled wire 111 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 entering the magnetic field of the first enameled wire 111. It should be noted that the shape of the first isolation portion 3 is not limited in the present application, and the shape of the first isolation portion 3 can be U-shaped, C-shaped or other shapes. The design of the shape of the first isolation portion 3 can 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.

[0083] In the embodiment of the present application, as shown in FIG. 2, a structure diagram of a cross section of a coil assembly is shown, the coil assembly 1 comprises a coil frame 13, an enameled wire (111 or 112) and a core (121 or 122). The core (121 or 122) is arranged in the through hole of the coil frame 13, the enameled wire (111 or 112) is wound outside the coil frame 13, two yokes 2 are arranged at two ends of the coil frame 13 respectively, and the two yokes 2 are connected with two ends of the core (121 or 122) respectively. In the present application, the core (121 or 122) is arranged vertically in the two coil frames 13, that is, the central axis of the core (121 or 122) is perpendicular to the coil frame 13. When the enameled wire (111 or 112) is electrified, the enameled wire (111 or 112) can generate a magnetic field by being wound outside the coil frame 13, and the two ends of the core (121 or 122) are two magnetic poles, and the strength of the magnetic field increases with the increase of the number of turns of the enameled wire (111 or 112).

[0084] In some embodiments, the coil assembly 1 can further comprise 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 arranged at the same end of the coil frame 13; the first pin 14 is connected with one end of the first enameled wire 111, the second pin 15 is connected with the other end of the first enameled wire 111, and is connected with the third pin 16 at the same time, the third pin 16 is connected with one end of the second enameled wire 112, and the fourth pin 17 is connected with the other end of the second enameled wire 112. In the present application, the second pin 15 and the third pin 16 can be connected by a wire, and can be connected by other connection modes. The first pin 14 and the fourth pin 17 are used to be connected with the external circuit or power supply of the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are connected with the external circuit or power supply, and the first enameled wire 111 and the second enameled wire 112 generate a magnetic field when electrified, thereby bringing an attractive force.

[0085] As shown in FIG. 3, a three-dimensional exploded schematic view of a coil assembly is shown.

[0086] In the embodiment of the present application, the coil assembly 1 comprises a coil frame 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 arranged in two through holes of the coil frame 13, the first enameled wire 111 and the second enameled wire 112 are wound on the coil frame 13, the first enameled wire 111 and the second enameled wire 112 are wound in the same direction, and the first enameled wire 111 and the second enameled wire 112 are connected in series, 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 the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 are partially superimposed, thereby increasing the suction force of the magnetic field.

[0087] In the present application, the first pin 14, the second pin 15, the third pin 16 and the fourth pin 17 are arranged at the same end of the coil frame 13 and can pass through the coil frame 13, the first pin 14 is connected with one end of the first enameled wire 111, the second pin 15 is connected with the other end of the first enameled wire 111 and is also connected with the third pin 16, the third pin 16 is connected with one end of the second enameled wire 112, and the fourth pin 17 is connected with the other end of the second enameled wire 112. In the present application, the first pin 14 and the fourth pin 17 are used to connect with the external circuit or power supply of the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are electrified, and the first enameled wire 111 and the second enameled wire 112 generate a magnetic field when electrified.

[0088] In the embodiment of the present application, the two yokes 2 can comprise a first arm and a second arm, the first arm is connected with the first iron core 121 and the second iron core 122, the second arm is connected with the first arm, a first isolation portion 3 is arranged on the first arm of the two yokes 2 at a position corresponding to at least part of the first enameled wire 111, the first isolation portion 3 has an opening and can be U-shaped, the opening faces the second arm of the two yokes 2, 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 application, the first isolation portion 3 is used to guide the direction of the magnetic force lines of the magnetic field generated by the first enameled wire 111 and the second enameled wire 112 when electrified, thereby avoiding the mutual interference of the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112, and trying 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.

[0089] As shown in FIG. 4, a schematic diagram of the magnetic force line direction in the magnetic latching relay is shown. The thick dashed line is the magnetic force line direction of the magnetic field generated by the first enameled wire 111, and the thin dashed line is the magnetic force line direction of the magnetic field generated by the second enameled wire 112. The two yokes 2 prevent the magnetic field generated by the first enameled wire 111 and the second enameled wire 112 from spreading outward, and enclose the magnetic force lines of the generated magnetic field between the two yokes 2, thereby playing a role of guiding the magnetic force lines. The U-shaped first isolation part 3 can effectively block the magnetic force 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 force 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, thereby guiding the directions of the two magnetic force lines, and further enabling more magnetic force lines to enter the second arms of the two yokes 2, thereby increasing the suction force in the direction of the second arms of the two yokes 2.

[0090] In the embodiment of the present application, as shown in FIG. 1, the magnetic latching relay can further include a moving spring lead-out sheet 4, a moving spring sheet 5, a stationary spring lead-out sheet 6, a push card 7, and an armature assembly 8; the two yokes further include a second arm: the second arm is connected with the first arm; a first end of the moving spring sheet 5 is connected with a first end of the push card 7, and a second end of the moving spring sheet 5 is connected with one end of the moving spring lead-out sheet 4; one side of the moving spring sheet 5 facing the stationary spring lead-out sheet 6 is provided with a moving contact; one side of the stationary spring lead-out sheet 6 facing the moving spring sheet 5 is provided with a stationary contact; the position of the stationary contact corresponds to the position of the moving contact; a second end of the push card 7 is connected with the armature assembly 8; and the armature assembly 8 is located between the second arms of the two yokes 2.

[0091] In the present application, when the magnetic field is generated by the first enameled wire 111 and the second enameled wire 112, the suction force on the armature assembly 8 can be generated, the current direction in the first enameled wire 111 and the second enameled wire 112 can be controlled, the magnetic pole direction of the magnetic field generated by the first enameled wire 111 and the second enameled wire 112 can be changed, the direction of the suction force on the armature assembly 8 can be further controlled, the armature assembly 8 can be rotated, the push card 7 can be caused to displace, the moving spring sheet 5 can also be caused to displace, and the contact state of the moving contact on the moving spring sheet 5 and the stationary contact on the stationary spring lead-out sheet 6 can be controlled, wherein the contact state of the moving contact on the moving spring sheet 5 and the stationary contact on the stationary spring lead-out sheet 6 can include contact and non-contact.

[0092] In some embodiments, the armature assembly 8 can include a fixed support 81, a permanent magnet steel 82, two armatures 83 and a containing body 84; the permanent magnet steel 82 is stacked between the two armatures 83 to form an I-shaped structure and is fixed by the containing body 84; the middle part of the fixed support 81 is provided with a rotating hole; the containing body 84 is rotatably connected to the fixed support 81 through the rotating hole; the containing body 84 is provided with a push arm towards the direction of the push card 7; the push arm is connected with the second end of the push card 7; the two armatures 83 rotate according to the magnetic pole direction of the magnetic field generated by the first and second enameled wires 111 and 112 and are attracted to the second arm of one of the two yoke irons 2; the containing body 84 rotates synchronously when the two armatures 83 rotate.

[0093] In the present application, two magnetic fields are generated by the first and second enameled wires 111 and 112, thereby bringing the attraction force to the two armatures 83. Since the magnetic poles of the permanent magnet steel 82 are fixed, the permanent magnet steel 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 steel 82. The direction of the magnetic field generated by the first and second enameled wires 111 and 112 can be changed by controlling the energization direction in the first and second enameled wires 111 and 112, further, the direction of the attraction force to the two armatures 83 can be controlled, thereby controlling the rotation of the two armatures 83 and the attraction to the second arm of one of the two yoke irons 2. The containing body 84 also rotates synchronously when the two armatures 83 rotate. When the containing body 84 rotates, the push arm on the containing body 84 drives the push card 7 to displace, further driving the moving reed 5 to displace, thereby controlling the contact state of the moving contact on the moving reed 5 and the stationary contact on the stationary reed lead-out piece 6. In the present application, the function of the permanent magnet steel 82 is to continue to maintain the attraction between the two armatures 83 and the second arm of one of the two yoke irons 2 when the first and second coils are not energized, i.e., no magnetic field is generated.

[0094] The embodiment of the present application provides a magnetic latching relay, which comprises a coil assembly and two yokes; the coil assembly comprises a plurality of enameled wires and a plurality of cores; the plurality of enameled wires are located outside the plurality of cores; the two yokes are located at two ends of the plurality of cores and are connected with the plurality of cores respectively; a first isolation part is arranged between adjacent cores of the plurality of cores on the two yokes, so that the suction force is generated by the plurality of enameled wires, and on one hand, the magnetic lines between the adjacent cores are partially isolated by the first isolation part, and part of the magnetic lines of the adjacent cores is guided to bypass the first isolation part, so that the interference of the magnetic lines between the adjacent cores is reduced, and on the other hand, the total number of turns of the plurality of enameled wires is increased compared with the single enameled wire, so that the total length of the plurality of enameled wires is shortened, the use of the enameled wire is reduced, and the cost is reduced.

[0095] As shown in FIG. 5, another structure diagram of a magnetic latching relay is shown, which specifically can comprise a coil assembly 1 and two yokes 2.

[0096] In the embodiment of the present application, the coil assembly 1 can comprise a plurality of enameled wires 11 and a plurality of cores 12.

[0097] In some embodiments, the number of the plurality of cores 12 can be two, comprising a first core 121 and a second core 122, and the number of the plurality of cores 12 in the present application can be set according to actual needs, and at least two cores are required, and the specific number of the plurality of cores 12 is not limited in the present application. Hereinafter, two cores, i.e., the first core 121 and the second core 122, are taken as examples for specific description.

[0098] In the embodiment of the present application, the plurality of enameled wires 11 are located outside the plurality of cores 12.

[0099] In some embodiments, the coil assembly 1 can further comprise a coil frame 13 with the same number as the plurality of cores 12; each core is arranged in a through hole of the corresponding coil frame 13; and each enameled wire 11 is wound outside the corresponding coil frame 13. Specifically, the number of the plurality of cores 12 in the present application is two, and the number of the coil frames 13 is also two. The first core 121 is arranged in the through hole of the coil frame 13 corresponding to the first core 121, and the second core 122 is arranged in the through hole of the coil frame 13 corresponding to the second core 122.

[0100] The number of the plurality of through holes corresponds to the number of the plurality of iron cores 12, one iron core is arranged in 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 this application, two iron cores are taken as a specific example, so 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 arranged in the first through hole, and the second iron core 122 is arranged in the second through hole. The first enameled wire 111 and the second enameled wire 112 are wound outside the coil holder 13, so that two magnetic fields can be generated by the first enameled wire 111 and the second enameled wire 112.

[0101] In some embodiments, the two yoke irons 2 include a first arm and a second arm; the first arm is connected with the first iron core 121 and the second iron core 122 respectively; the first iron core 121 and the second iron core 122 are arranged side by side along the extension direction perpendicular to the first arm of the yoke iron 2.

[0102] In some embodiments, 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 that 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. Therefore, by arranging the first enameled wire 111 and the second enameled wire 112 in the same winding direction and in series, the two magnetic fields generated 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.

[0103] In the embodiments of the present application, the two yoke irons 2 are located at the two ends of the plurality of iron cores 12 and are connected with the plurality of iron cores 12 respectively. The first isolation part 3 is arranged between the adjacent iron cores in the plurality of iron cores 12. The two yoke irons 2 can be L-shaped. The two yoke irons 2 include a first arm and a second arm. The first arms of the two yoke irons 2 are respectively attached to the two ends of the coil holder 13. The first arms of the two yoke irons 2 are connected with the plurality of iron cores 12 respectively. The first isolation part 3 is arranged on the first arm of the yoke iron 2. The second arm is connected with the first arm. The second arm can be connected with the first arm perpendicularly or at a certain inclination angle.

[0104] In some embodiments, the first isolation part 3 is arranged between the first iron core 121 and the second iron core 122 on the two yoke irons 2. The first isolation part 3 is arranged along the extension direction of the yoke iron, completely isolates or divides the two parts of the yoke iron corresponding to the first iron core 121 and the second iron core 122, and keeps the two parts connected.

[0105] In some embodiments, the two yokes 2 are provided with a first isolation part 3 between the first core 121 and the second core 122, the first isolation part 3 is arranged along the extension direction of the yoke to completely isolate or divide and keep partial connection of the two parts of the yoke corresponding to the first core 121 and the second core 122. As shown in FIG. 5, the two yokes 2 are provided with a first isolation part 3 between the first core 121 and the second core 122, the first isolation part 3 is arranged along the extension direction of the yoke to completely isolate the two parts of the yoke corresponding to the first core 121 and the second core 122. As shown in FIG. 6, a structure block diagram of a first isolation part provided in an embodiment of the present application is shown, the two yokes 2 are provided with a first isolation part 3 between the first core 121 and the second core 122, the first isolation part 3 is arranged along the extension direction of the yoke to divide and keep partial connection of the two parts of the yoke corresponding to the first core 121 and the second core 122.

[0106] In the present application, two magnetic fields corresponding to the first enameled wire 111 and the second enameled wire 112 are generated when energized. The first isolation part 3 in the present application is used to guide the direction of the magnetic lines of force of the magnetic field generated by the first enameled wire 111 and the second enameled wire 112 when energized, so as to avoid mutual interference of the two magnetic fields generated by the two enameled wires, and to avoid the magnetic lines of force of the magnetic field generated by the first enameled wire 111 entering the magnetic field of the second enameled wire 112, and the magnetic lines of force of the magnetic field generated by the second enameled wire 112 entering the magnetic field of the first enameled wire 111.

[0107] In an embodiment of the present application, as shown in FIG. 2, a structure diagram of a cross section of a coil assembly provided in an embodiment of the present application is shown, the coil assembly 1 includes a coil frame 13, an enameled wire (111 or 112) and a core (121 or 122). The core (121 or 122) is arranged in the through hole of the coil frame 13, the enameled wire (111 or 112) is wound outside the coil frame 13, the two yokes 2 are respectively arranged at the two ends of the coil frame 13, and the two yokes 2 are respectively connected with the two ends of the core (121 or 122). In the present application, the core (121 or 122) is arranged vertically in the two coil frames 13, that is, the central axis of the core (121 or 122) is perpendicular to the coil frame 13. In the present application, the enameled wire (111 or 112) is wound outside the coil frame 13, when the enameled wire (111 or 112) is energized, the enameled wire (111 or 112) can generate a magnetic field, and the two ends of the core (121 or 122) are two magnetic poles, and the strength of the magnetic field increases with the increase of the number of turns of the enameled wire (111 or 112).

[0108] In some embodiments, the coil assembly 1 can 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 arranged at the same end of the coil frame 13; the first pin 14 is connected with one end of the first enameled wire 111, the second pin 15 is connected with the other end of the first enameled wire 111, and is connected with the third pin 16 at the same time, the third pin 16 is connected with one end of the second enameled wire 112, and the fourth pin 17 is connected with the other end of the second enameled wire 112. In the present application, the second pin 15 and the third pin 16 can be connected by a wire, or can be connected by other connection modes. The first pin 14 and the fourth pin 17 are used to be connected with the external circuit or power supply of the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are connected with the external circuit or power supply, and the first enameled wire 111 and the second enameled wire 112 are electrified to generate a magnetic field to bring an attractive force.

[0109] As shown in FIG. 7, a perspective exploded schematic view of another coil assembly provided by the embodiments of the present application is shown.

[0110] In the embodiments of the present application, the coil assembly 1 includes a coil frame 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 arranged in the two through holes of the coil frame 13, the first enameled wire 111 and the second enameled wire 112 are wound outside the coil frame 13, the first enameled wire 111 and the second enameled wire 112 are wound in the same direction, and the first enameled wire 111 and the second enameled wire 112 are connected in series, so that the magnetic pole directions of the first enameled wire 111 and the second enameled wire 112 are the same, and 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 attractive force brought by the magnetic field.

[0111] In the present application, the first pin 14, the second pin 15, the third pin 16 and the fourth pin 17 are arranged at the same end of the coil frame 13, and can pass through the coil frame 13; the first pin 14 is connected with one end of the first enameled wire 111, the second pin 15 is connected with the other end of the first enameled wire 111, and is connected with the third pin 16 at the same time, the third pin 16 is connected with one end of the second enameled wire 112, and the fourth pin 17 is connected with the other end of the second enameled wire 112. In the present application, the first pin 14 and the fourth pin 17 are used to be connected with the external circuit or power supply of the magnetic latching relay, so that the first enameled wire 111 and the second enameled wire 112 are electrified with the external circuit or power supply, and the first enameled wire 111 and the second enameled wire 112 are electrified to generate a magnetic field to bring an attractive force.

[0112] In the embodiment of the present application, the first isolation part 3 is arranged between the first iron core 121 and the second iron core 122 on the two yoke irons 2, and is arranged along the extension direction of the yoke iron to completely isolate the two parts of the yoke iron corresponding to the first iron core 121 and the second iron core 122. In the present application, the first isolation part 3 can also divide the two parts of the yoke iron corresponding to the first iron core 121 and the second iron core 122 and keep them partially connected, as shown in FIG. 6. In the present application, the first isolation part 3 is used to guide the direction of the magnetic lines of force of the magnetic field generated by the first enameled wire 111 and the second enameled wire 112 when they are energized, so as to avoid the mutual interference of the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112, and to avoid the magnetic lines of force 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 lines of force of the magnetic field generated by the second enameled wire 112 flowing into the magnetic field generated by the first enameled wire 111 as much as possible.

[0113] As shown in FIG. 8, another schematic diagram of the direction of the magnetic lines of force in the magnetic latching relay provided by the embodiment of the present application is shown. The thick dashed line is the direction of the magnetic lines of force of the magnetic field generated by the first enameled wire 111, and the thin dashed line is the direction of the magnetic lines of force of the magnetic field generated by the second enameled wire 112. The two yoke irons 2 prevent the magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 from spreading outward, and enclose the magnetic lines of force of the generated magnetic fields between the two yoke irons 2 to play a role of guiding the magnetic lines of force. The first isolation part 3 completely isolates or divides and keeps partially connected the two parts of the yoke iron corresponding to the first iron core 121 and the second iron core 122, which can effectively block the magnetic lines of force 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 lines of force 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 lines of force, and thus more magnetic lines of force can enter the second arms of the two yoke irons 2 to increase the suction force in the direction toward the second arms of the two yoke irons 2.

[0114] In the embodiment of the present application, as shown in FIG. 5, the magnetic latching relay can further include a moving spring lead-out sheet 4, a moving spring sheet 5, a stationary spring lead-out sheet 6, a push card 7, and an armature assembly 8; the two yoke irons further include a second arm: the second arm is connected with the first arm; the first end of the moving spring sheet 5 is connected with the first end of the push card 7, and the second end of the moving spring sheet 5 is connected with one end of the moving spring lead-out sheet 4; one side of the moving spring sheet 5 facing the stationary spring lead-out sheet 6 is provided with a moving contact; one side of the stationary spring lead-out sheet 6 facing the moving spring sheet 5 is provided with a stationary contact; the position of the stationary contact corresponds to the position of the moving contact; the second end of the push card 7 is connected with the armature assembly 8; and the armature assembly 8 is located between the second arms of the two yoke irons 2.

[0115] In the present application, when the magnetic field is generated by the first enameled wire 111 and the second enameled wire 112, the suction force on the armature assembly 8 can be brought, the energization direction in the first enameled wire 111 and the second enameled wire 112 can be controlled, the magnetic pole direction of the magnetic field 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, the rotation of the armature assembly 8 can be controlled, the displacement of the push card 7 can be driven, the displacement of the moving reed 5 can also be generated, and further, the contact state of the moving contact on the moving reed 5 and the static contact on the static reed lead-out piece 6 can be controlled, wherein the contact state of the moving contact on the moving reed 5 and the static contact on the static reed lead-out piece 6 can include contact and non-contact.

[0116] In some embodiments, the armature assembly 8 can include a fixed support 81, a permanent magnet steel 82, two armatures 83 and a containing body 84; the permanent magnet steel 82 is stacked between the two armatures 83 to form an I-shaped structure, and is fixed by the containing body 84; the middle part of the fixed support 81 is provided with a rotating hole; the containing body 84 is rotatably connected in the fixed support 81 through the rotating hole; the containing body 84 is provided with a push arm in the direction towards the push card 7; the push arm is connected with the second end of the push card 7; the two armatures 83 rotate according to the magnetic pole direction of the magnetic field 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 yoke irons 2; the containing body 84 rotates synchronously when the two armatures 83 rotate.

[0117] In the present application, two magnetic fields are generated by the first enameled wire 111 and the second enameled wire 112, thereby bringing the suction force on the two armatures 83, because the magnetic poles of the permanent magnet steel 82 are fixed, the permanent magnet steel 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 steel 82, the energization direction in the first enameled wire 111 and the second enameled wire 112 can be controlled, the magnetic pole direction of the magnetic field 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 two armatures 83 can be controlled, thereby the rotation of the two armatures 83 can be controlled, and the two armatures 83 are attracted to the second arm of one of the two yoke irons 2, the containing body 84 also rotates synchronously when the two armatures 83 rotate, when the containing body 84 rotates, the push arm on the containing body 84 drives the push card 7 to displace, further, the moving reed 5 also generates displacement, and further, the contact state of the moving contact on the moving reed 5 and the static contact on the static reed lead-out piece 6 can be controlled. In the present application, the permanent magnet steel 82 functions to continue to keep the two armatures 83 attracted to the second arm of one of the two yoke irons 2 when the two armatures 83 are attracted to the second arm of one of the two yoke irons 2, and the first coil and the second coil are not energized, i.e., no magnetic field is generated.

[0118] In some embodiments, the magnetic latching relay can further comprise: an armature assembly 8; the armature assembly 8 can comprise: two armatures 83; the two armatures 83 correspond to the two yoke iron 2 parts, and the two armatures 83 and the first isolation part 3 of the two yoke iron 2 correspond to the positions where the second isolation part 9 is arranged; the width of the second isolation part 9 corresponds to the width of the first isolation part 3. Thus, when the magnetic lines of force of the two magnetic fields generated by the first enameled wire 111 and the second enameled wire 112 pass through the two armatures 83, because of the arrangement of the second isolation part 9, the direction of the magnetic lines of force of the two magnetic fields is guided, the interference of the magnetic lines of force of the two magnetic fields is avoided, and the suction force generated by the two magnetic fields on the two armatures 83 is increased.

[0119] The magnetic latching relay provided by the embodiments of the present application comprises: a coil assembly and two yoke irons; the coil assembly comprises a plurality of enameled wires and a plurality of cores; the plurality of enameled wires are located outside the plurality of cores; the two yoke irons are located at two ends of the plurality of cores and are connected with the plurality of cores respectively; and a first isolation part is arranged between adjacent cores on the two yoke irons, so that a suction force is generated by the plurality of enameled wires, and on one hand, the magnetic lines of force between the adjacent cores are partially isolated by the first isolation part, part of the magnetic lines of force of the adjacent cores are guided to bypass the first isolation part, the interference between the magnetic lines of force of the adjacent cores is reduced, and on the other hand, the total number of turns of the plurality of enameled wires is reduced compared with the single enameled wire under the condition that the total number of turns is the same, so that the number of turns on each enameled wire is reduced, the number of turns of the outer circle of the enameled wire is reduced, the total length of the plurality of enameled wires is shorter than that of the single enameled wire, the total length of the enameled wire is shortened, the material of the enameled wire is reduced, and the cost is reduced.

[0120] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0121] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make other changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0122] Finally, it needs to be pointed out that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or terminal device including a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or terminal device. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or terminal device including the said element.

[0123] The above is a detailed introduction to the magnetic latching relay provided by the present application. The principles and implementation manners of the present application are described by applying specific examples in this document. The above example is only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A magnetic latching relay, wherein, The magnetic latching relay comprises: a coil assembly and two yokes; the coil assembly comprises a plurality of enameled wires and a plurality of cores; the plurality of enameled wires are located outside the plurality of cores; the two yokes are located at two ends of the plurality of cores and are connected with the plurality of cores respectively; a first isolation part is arranged between adjacent cores of the plurality of cores on the two yokes.

2. The magnetic latching relay of claim 1, wherein, The number of the plurality of cores is two, comprising a first core and a second core.

3. The magnetic latching relay of claim 2, wherein, The two yokes comprise a first arm; the first arm is connected with the first core and the second core respectively; the first core and the second core are arranged side by side along the extension direction of the first arm of the two yokes.

4. The magnetic latching relay of claim 3, wherein, The two yokes further comprise a second arm; the second arm is connected with the first arm; the first isolation part is arranged between the first core and the second core on the two yokes; the first isolation part has an opening, and the opening faces the second arm of the two yokes.

5. The magnetic latching relay of claim 2, wherein, The two yokes comprise a first arm; the first arm is connected with the first core and the second core respectively; the first core and the second core are arranged side by side along the extension direction of the first arm of the two yokes.

6. The magnetic latching relay according to claim 5, wherein the first isolation part is arranged between the first core and the second core on the two yokes; the first isolation part is arranged along the extension direction of the yoke, completely isolates or divides the two parts of the yoke corresponding to the first core and the second core and keeps part of the connection.

7. The magnetic latching relay of claim 6, wherein, The magnetic latching relay further comprises an armature assembly; the armature assembly comprises two armatures; the two armatures correspond to the two yokes partially, and a second isolation part is arranged 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.

8. The magnetic latching relay of claim 1 or 4 or 6, wherein, The coil assembly further comprises a coil holder with the same number of cores as the plurality of cores; each core is arranged in a through hole of the corresponding coil holder; and each enameled wire is wound outside the corresponding coil holder.

9. The magnetic latching relay of claim 1, wherein, The plurality of enameled wires are connected in series.

10. The magnetic latching relay of claim 9, wherein, The number of the plurality of enameled wires is two, comprising a first enameled wire and a second enameled wire; 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.

11. The magnetic latching relay according to claim 10, wherein the coil assembly further comprises 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 arranged at the same end of the coil holder respectively; one end of the first enameled wire is connected with the first pin, the other end of the first enameled wire is connected with the second pin, and the second pin is connected with the third pin at the same time; one end of the second enameled wire is connected with the third pin, and the other end of the second enameled wire is connected with the fourth pin.

12. The magnetic latching relay of claim 3 or 5, wherein, The magnetic latching relay further comprises a moving spring leading piece, a moving spring piece, a static spring leading piece, a push card and an armature assembly; the two yoke irons further comprise second arms; the second arms are connected with the first arms; a first end of the moving spring piece is connected with a first end of the push card, and a second end of the moving spring piece is connected with one end of the moving spring leading piece; one side of the moving spring piece facing the static spring leading piece is provided with a moving contact; one side of the static spring leading piece facing the moving spring piece is provided with a static contact; the position of the static contact corresponds to the position of the moving contact; a second end of the push card is connected with the armature assembly; the armature assembly is located between the second arms of the two yoke irons.

13. The magnetic latching relay according to claim 12, wherein, the armature assembly comprises a fixed support, a permanent magnet, two armatures and an accommodating body; the permanent magnet is stacked between the two armatures to form an I-shaped structure, and is fixed by the accommodating body; a middle part of the fixed support is provided with a rotating hole; the accommodating body is rotatably connected in the fixed support through the rotating hole; a pushing arm is arranged on the accommodating body in the direction of the push card; the pushing arm is connected with 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 and second enameled wires, and are attracted to the second arms of one of the two yoke irons; the accommodating body rotates synchronously when the two armatures rotate.

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