Magnetic circuit part and magnetic latching relay

Abstract

The utility model discloses a magnetic circuit part and a magnetic latching relay, the magnetic circuit part comprises a coil assembly and an armature assembly, and the coil assembly comprises a coil rack, a signal terminal and a coil winding; the armature assembly rotates around a rotating axis extending in the X-axis direction relative to the coil assembly. The coil rack is provided with two deformation parts, and the two deformation parts are suitable for deformation away from each other in the X-axis direction so that the armature assembly can be inserted between the two deformation parts and are suitable for deformation recovery so as to be rotationally connected with the armature assembly. The magnetic latching relay comprises the magnetic circuit part. The armature assembly is easy to assemble and is not liable to be jammed during rotation after being assembled.

Description

Technical Field

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

[0002] The magnetic latching relay in the prior art usually includes a base, a magnetic circuit part, a contact part and a pushing part. The magnetic circuit part includes a coil assembly and an armature assembly. The coil assembly includes a coil frame, a signal terminal fixed to the coil frame and a coil winding wound on the coil frame. The armature assembly rotates relative to the coil assembly. The magnetic circuit part has a magnetic latching function. The coil assembly is provided with two magnetic drive ends. The armature assembly includes a permanent magnet, two armatures and an insulating part fixed to the permanent magnet and the two armatures. The two armatures are respectively abutted against the two magnetic poles of the permanent magnet. Each armature is respectively provided with two attracting parts suitable for attracting the magnetic drive end. When the magnetic circuit part is in the magnetic latching state, the two armatures respectively have an attracting part that attracts the corresponding magnetic drive end to form a closed magnetic circuit; the base and the coil frame are fixed to each other or connected as one body, the contact part is installed on the base and includes a moving contact group and a static contact group, the static contact group is provided with a static contact, and the moving contact group is provided with a moving contact. The pushing part is driven by the armature assembly to drive the moving contact and the static contact to close or disconnect.

[0003] In the prior art, the armature assembly and the coil assembly generally establish a rotational connection relationship through the following two schemes. Scheme 1 also includes a connecting frame, the base is provided with a connecting wall, and the connecting wall is provided with a matching hole; the connecting frame is provided with another matching hole, and the insulating part of the armature assembly is provided with two matching parts extending along the direction of the rotation axis, one of the two matching parts is first rotationally matched with the matching hole on the connecting wall, and then the connecting frame is moved along the direction of the rotation axis until the matching hole is rotationally matched with the other matching part. After the connecting frame moves into place, it is matched and fixed with the base and the yoke. The disadvantages of this scheme are that there are many parts and components, many assembly steps, and the connecting frame needs to be fixed to the base and the yoke. The tolerance between them may cause the rotation axis of the armature assembly to deviate from the designed rotation axis, thereby causing the armature assembly to get stuck during rotation. In Scheme 2, the component that rotates with the armature assembly is the base, and the base is provided with two walls opposite to each other, and the two walls are provided with matching holes that rotate with the matching part of the armature assembly. During installation, the armature assembly needs to be squeezed between the two walls in a direction perpendicular to the axis of rotation until the mating part is mated with the mating hole. Although this solution solves the problems of many parts, complicated assembly process and large assembly tolerance, the two walls are constrained by the other walls of the shell and their elastic deformation capacity is limited. On this basis, when the armature assembly is squeezed between the two walls, the two mating parts slide between the two walls in an interference fit manner, making assembly difficult, and the mating parts and the two walls will form a more serious scraping phenomenon, which requires additional processes such as microscopy and soot blowing, affecting production efficiency. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a magnetic circuit part and a magnetic holding relay, which, compared with the first solution in the prior art, is less likely to get stuck when the armature assembly rotates relative to the coil assembly; and is easier to assemble than the second solution in the prior art.

[0005] In order to achieve the above objectives, the following technical solutions are adopted:

[0006] Technical solution one and its related embodiments provide a magnetic circuit part, which includes a coil assembly and an armature assembly, the coil assembly including a coil frame, a signal terminal fixed to the coil frame and a coil winding wound on the coil frame, the winding axis of the coil winding extends along the Z-axis direction, and the armature assembly rotates relative to the coil assembly around a rotation axis extending along the X-axis direction; the coil frame is provided with two deformation parts, the two deformation parts are suitable for deforming away from each other along the X-axis direction so that the armature assembly can be inserted between the two deformation parts, and are suitable for restoring deformation to be rotatably connected with the armature assembly.

[0007] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, the magnetic circuit part has a magnetic holding function; the coil assembly is provided with two magnetic drive ends; the armature assembly includes a permanent magnet and two armatures, the two armatures are respectively fixed to the two magnetic poles of the permanent magnet, and each armature is respectively provided with two attraction parts suitable for being attracted to the magnetic drive end. When the magnetic circuit part is in the magnetic holding state, the two armatures respectively have an attraction part that attracts the corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends.

[0008] Based on technical solution two, technical solution three is also provided. In technical solution three and its related embodiments, the armature assembly also includes an insulating part, which is fixed to the permanent magnet part and is provided with two mating cavities, and the openings of the two mating cavities are away from each other along the X-axis direction; the two deformation parts are respectively provided with mating parts that rotate with the mating cavities.

[0009] Based on technical solution three, technical solution four is also provided. In technical solution four and its related embodiments, the insulating part is provided with two connecting surfaces facing away from each other along the X-axis direction, and a protrusion is provided on the connecting surface. The protrusion encloses the matching cavity, and the part of the protrusion facing the coil winding is provided with a guide portion. The guide portion is suitable for cooperating with the inclined surface of the matching portion so that when the armature assembly is inserted along the Y-axis direction, the two deformation portions are deformed away from each other along the X-axis direction.

[0010] Based on technical solution four, technical solution five is also provided. In technical solution five and its related embodiments, the side cavity wall of the mating cavity is suitable for point contact with the mating part on a projection surface perpendicular to the X-axis direction.

[0011] Based on Technical Solution 4, Technical Solution 6 is also provided. In Technical Solution 6 and its related embodiments, the side cavity wall of the mating cavity has a first end connected to the connecting surface and a second end away from the connecting surface; on the projection surface perpendicular to the X-axis direction, the projection of the first end covers the projection of the second end.

[0012] Based on Technical Solution 4, Technical Solution 7 is also provided. In Technical Solution 7 and its related embodiments, a protrusion is provided on the connecting surface, and the protrusion is located in the mating cavity and is suitable for point contact with the mating part.

[0013] Based on Technical Solution 4, Technical Solution 8 is also provided. In Technical Solution 8 and its related embodiments, the coil frame is provided with a frame, the deformation portion extends from the frame along the Y-axis direction, the deformation portion is provided with a base connected to the frame, and the projection of the matching portion on the projection plane perpendicular to the Y-axis direction is located within the projection of the base on the projection plane; the deformation portion is provided with a accommodating groove, the accommodating groove is adjacent to the matching portion and is closer to the coil winding than the matching portion; the protruding portion includes a first protrusion suitable for extending into the accommodating groove along the X-axis direction, the accommodating groove is suitable for allowing the first protrusion to rotate around the rotation axis, and the guide portion is formed on the first protrusion.

[0014] Based on Technical Solution Eight, Technical Solution Nine is also provided. In Technical Solution Nine and its related embodiments, the frame is provided with a winding shaft, a middle retaining wall and two outer retaining walls. The winding shaft extends along the Z-axis direction and is provided with an iron core hole passing through along the Z-axis direction. The middle retaining wall and the outer retaining wall protrude from the outer edge of the winding shaft. The middle retaining wall is located in the middle of the winding shaft along the Z-axis direction, and the two outer retaining walls are located at both ends of the winding shaft along the Z-axis direction; the two deformation parts extend from the middle retaining wall.

[0015] Based on Technical Solution Nine, Technical Solution Ten is also provided. In Technical Solution Ten and its related embodiments, the middle retaining wall is provided with a wire passing groove that passes through along the Z-axis direction and opens along the X-axis direction, and the wire passing groove is used for passing the coil winding; the deformation portion and the wire passing groove are located on both sides of the second plane, and the second plane is perpendicular to the Y-axis direction and passes through the central axis of the winding shaft.

[0016] Based on technical solution ten, technical solution eleven is also provided. In technical solution eleven and its related embodiments, a gap is formed between the side end of the middle retaining wall away from the wire groove along the Y-axis direction and the deformation part along the X-axis direction.

[0017] Based on technical solution ten, technical solution twelve is also provided. In technical solution twelve and its related embodiments, the coil assembly also includes an iron core and two yokes; the signal terminal is fixed to the frame and is located on one side of the frame along the Z-axis direction, and the coil winding is wound around the winding shaft and electrically connected to the signal terminal; the iron core passes through the iron core hole, and the two yokes are respectively fixed to the two ends of the iron core along the Z-axis direction; the number of the wire passing slots is two, and the openings of the two wire passing slots deviate from each other along the X-axis direction.

[0018] Based on Technical Solution 12, Technical Solution 13 is also provided. In Technical Solution 13 and its related embodiments, the outer retaining wall is provided with an abutting surface and a limiting portion. The abutting surface is suitable for abutting the yoke along the Z-axis direction, and the limiting portion is protruded from the abutting surface along the Z-axis direction and is suitable for limiting cooperation with the yoke along the X-axis direction.

[0019] Based on technical solution thirteen, technical solution fourteen is also provided. In technical solution fourteen and its related embodiments, a limiting portion away from the signal terminal along the Z-axis direction is provided with a limiting rib suitable for cooperating with the yoke iron limit, and the limiting rib extends along the Z-axis direction, and a guide slope is provided at one end of the limiting rib away from the signal terminal along the Z-axis direction.

[0020] Based on technical solution thirteen, technical solution fifteen is also provided. In technical solution fifteen and its related embodiments, the frame is also provided with a connecting portion, the signal terminal is fixedly connected to the connecting portion and passes through the connecting portion, and the outer retaining wall close to the signal terminal along the Z-axis direction is surrounded by the corresponding limiting portion and the connecting portion to form a connecting groove, the connecting groove is open along the Y-axis direction and is suitable for the corresponding yoke to be inserted, and the connecting groove is connected to the iron core hole.

[0021] Based on technical solution fifteen, technical solution sixteen is also provided. In technical solution sixteen and its related embodiments, the connecting portion is provided with an observation hole and a rivet hole. The observation hole is connected to the connecting groove along the X-axis direction; the rivet hole is connected to the iron core hole along the Z-axis direction for the yoke and the iron core to be riveted therein.

[0022] Based on technical solution fifteen, technical solution seventeen is also provided. In technical solution seventeen and its related embodiments, the outer retaining wall close to the signal terminal along the Z-axis direction extends along the Y-axis direction and close to the signal terminal, and a wiring gap is provided on the surface facing the middle retaining wall. The wiring gap is used to accommodate the connecting wire of the coil winding for connecting to the signal terminal.

[0023] Technical solution 18 and its related embodiments provide a magnetic holding relay, comprising a base, a contact part, a pushing part and a magnetic circuit part as described in any one of technical solutions 1 to 17, wherein the coil frame is integrally connected to the base, the contact part is mounted on the base and comprises a moving contact group and a static contact group, the static contact group is provided with a static contact, and the moving contact group is provided with a moving contact, and the pushing part is driven to move by the armature assembly and drives the moving contact and the static contact to close or open.

[0024] Based on technical solution eighteen, technical solution nineteen is also provided. In technical solution nineteen and its related embodiments, the armature assembly and the contact part are respectively located on both sides of the coil winding along the Y-axis direction, and the two ends of the pushing part along the Y-axis direction are respectively connected to the armature assembly and the moving contact group, and the contact part is also provided with a lead-out terminal, which is fixed to the base, and the signal terminal and the lead-out terminal are far away from each other along the Y-axis direction.

[0025] From the above description of the present invention and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0026] After continuous observation, experimentation and research, the applicant has learned that the reason for the technical problem of "the armature assembly is prone to getting stuck when rotating relative to the coil assembly" in the existing technical solution one is that due to processing errors between the connecting frame and the base, the axes of the matching holes of the connecting frame and the matching holes of the base may not coincide, causing the rotation axis of the armature assembly to tilt. As a result, when the armature assembly rotates, both matching parts are subject to greater resistance in the matching holes, and the armature assembly is prone to getting stuck when rotating. In the existing technical solution two, the reason for the technical problem of "the armature assembly is difficult to assemble" is that when the armature assembly is installed in the existing structure, the two walls of the shell need to be deformed away from each other, and each of the two walls has at least two sides constrained by other walls of the shell, making deformation difficult and with great resistance to deformation. Moreover, after deformation, the two walls may undergo plastic deformation, so that the distance between the two walls may become larger or the axes of the two matching holes may no longer coincide, and stability after assembly cannot be guaranteed.

[0027] In technical solution one and its preferred embodiment, since the coil frame is provided with two deforming parts, the two deforming parts are suitable for deforming away from each other along the X-axis direction so that the armature assembly can be inserted between the two deforming parts and are suitable for restoring the deformation to be rotatably connected with the armature assembly. On the one hand, the two deforming parts are formed by synchronous processing, which makes it easy to control the accuracy and reduce the influence of the deviation of the installation position of the armature assembly caused by production errors and assembly errors. When the armature assembly cooperates with the deforming part, the rotation axis of the armature assembly at both ends along the X-axis direction is easy to coincide and not easy to get stuck. On the other hand, since the two deforming parts are suitable for deforming away from each other along the X-axis direction when the armature assembly is inserted, only one side of the deforming part along the Y-axis direction is constrained by the other walls of the coil frame. The constrained part is smaller than that of solution two of the prior art, the deforming part is easier to deform, the assembly is simpler, and the deformation is easy to recover after deformation, thereby ensuring the stability of the armature assembly after assembly.

[0028] In technical solution two and its preferred embodiment, in the magnetic holding state, the two armatures each have an attraction portion that attracts the corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends. The closed magnetic circuit passes from one magnetic pole of the permanent magnet through an attraction portion, a magnetic drive end, the iron core, the other magnetic drive end and the other attraction portion back to the other magnetic pole of the permanent magnet. Compared with the closed magnetic circuit that only passes through one magnetic drive end, the closed magnetic circuit of this technical solution has a greater magnetic attraction force and a more stable magnetic circuit. When a large current passes through the magnetic holding relay of technical solution seventeen below, this advantage can avoid the static contacts and the moving contacts from bouncing off each other when a large current passes through, causing the risk of explosion.

[0029] In technical solution three and its preferred embodiment, the insulating part is fixed to the permanent magnet part and is provided with two matching cavities, the openings of the two matching cavities are away from each other along the X-axis direction, and the two deformation parts are respectively provided with matching parts that are rotatably matched with the matching cavities, so that the rotation axis of the armature assembly is formed on the matching part of the deformation part. Compared with the formation of the matching cavity, the volume of the part of the deformation part used to form the rotational fit is larger, so the strength for the rotational fit is greater. When the gravity direction of the armature assembly is the Z-axis direction, the deformation of the deformation part due to strength difference can avoid the displacement of the rotation axis of the armature assembly in the Z-axis direction, which causes the rotation axes of the armature assembly at both ends of the X-axis direction to not overlap, and the rotation becomes stuck.

[0030] In Technical Solution 4 and its preferred embodiments, the protrusions enclose a mating cavity. Compared to solutions with mating holes on the connecting surface, this allows for a thinner wall thickness at the connecting surface, thereby reducing the use of insulating materials and lowering costs. A guide portion is provided on the portion of the protrusion facing the coil winding, adapted to mate with the inclined surface of the mating portion. This allows the deformable portion to be subjected to the X-axis force component applied by the guide portion when the armature assembly is inserted along the Y-axis, making it easier for the two deformable portions to deform away from each other along the X-axis. Furthermore, the provision of the guide portion reduces the contact area between the armature assembly and the deformable portion when inserted along the Y-axis, thereby reducing insertion resistance and reducing insertion effort.

[0031] In technical solution five and its preferred embodiment, the side cavity wall of the mating cavity and the mating part are in point contact on the projection surface perpendicular to the X direction. Compared with surface contact, the contact area is smaller and the friction is smaller, which can reduce the scraping of the side cavity wall of the mating cavity, which is beneficial to improving the service life of the deformation part and the insulating part. In addition, it can also reduce the resistance encountered by the armature assembly during rotation, so that the magnetic driving force required to be provided by the coil winding is smaller, which is beneficial to reducing the volume of the coil assembly, and can also reduce the volume of the magnetic circuit part and the overall volume of the relay in technical solutions eighteen and nineteen.

[0032] In technical solution six and its preferred embodiment, the side cavity wall of the mating cavity has a first end connected to the connecting surface and a second end away from the connecting surface; on the projection surface perpendicular to the X-axis direction, the projection of the first end covers the projection of the second end, so that the thickness of the side cavity wall of the mating cavity gradually increases in the direction toward the connecting surface, thereby obtaining a stronger supporting effect, and having better shear strength when the gravity direction of the armature assembly is the Z-axis direction.

[0033] In technical solution seven and its preferred embodiment, the protrusion is located in the mating cavity and is suitable for point contact with the mating part. Compared with surface contact, the contact area is smaller and the friction is lower, which can reduce scraping on the connecting surface and is beneficial to improving the service life of the deformation part and the insulating part. In addition, it can also reduce the resistance encountered by the armature assembly during rotation, thereby helping to reduce the volume of the coil assembly, and can also reduce the volume of the magnetic circuit part and the overall volume of the relay in technical solutions eighteen and nineteen.

[0034] In Technical Solution 8 and its preferred embodiments, the projection of the mating portion on a projection plane perpendicular to the Y-axis lies within the projection of the base portion on the projection plane. This, compared to the case where the projection of the mating portion on a projection plane perpendicular to the Y-axis lies outside the projection plane of the base portion, means that the mating portion does not form a protruding shaft that is inserted into the mating cavity. When the gravity of the armature assembly is in the Z-axis direction, this reduces the shear force caused by the armature assembly's gravity, thereby preventing the armature assembly's rotation axis from shifting in the Z-axis direction due to the shear force, and thus preventing the armature assembly's rotation axis from misaligning along the X-axis and causing problems such as jamming. The engagement between the accommodating groove and the first protrusion prevents the armature assembly from disengaging from the deformable portion in the Y-axis direction, thereby further stabilizing the connection between the armature assembly and the coil assembly. A guide portion is formed on the first protrusion, and the accommodating groove is adjacent to the mating portion and closer to the coil winding than the mating portion. This allows the first protrusion to be inserted into the accommodating groove after the guide portion and the mating portion's inclined surface have engaged, resulting in smoother insertion of the first protrusion and further simplifying assembly of the armature assembly.

[0035] In technical solution nine and its preferred embodiment, the frame is provided with a winding shaft, a middle retaining wall and two outer retaining walls, so that parts of the coil assembly can be installed on the frame, which can reduce production errors and assembly errors. The setting of the middle retaining wall and the two outer retaining walls can protect the coil winding; the two deformation parts extend from the middle retaining wall, which can reduce the impact of the deformation of the deformation part on the coil winding.

[0036] In technical solution ten and its preferred embodiments, the setting of the wire passing slot is conducive to the connection of the coil winding wire with the signal terminal, and the deformation part and the wire passing slot are located on both sides of the second plane, that is, the deformation part and the wire passing slot are far away from each other, which further makes it difficult for the deformation part to affect the wire passing slot during elastic deformation, thereby further reducing the influence of the deformation of the deformation part on the coil winding. Similarly, it also avoids the setting of the wire passing slot affecting the strength of the deformation part, causing the strength of the deformation part used to support the armature assembly to be weakened.

[0037] In technical solution eleven and its preferred embodiments, a gap is formed between the side end of the middle retaining wall along the Y-axis direction and the deformable part along the X-axis direction. The formation of the gap is conducive to the deformation of the deformable part along the X-axis direction, and the deformable part of the deformable part is located at the side end of the wire groove and thus away from the wire groove, further reducing the influence of the deformation of the deformable part on the coil winding. In addition, the setting of the gap makes rational use of space without affecting the basic function of the middle retaining wall, so that the deformable part can obtain better deformation ability without excessive extension, which is conducive to reducing the space occupied in the Y-axis direction.

[0038] In technical solution twelve and its preferred embodiment, the signal terminal is fixed to the frame and is located on one side of the frame along the Z-axis direction. There are two wire passing slots, and the openings of the two wire passing slots are separated from each other along the X-axis direction, which facilitates the coil winding to pass through the wire twice and connect with the signal terminal, making it difficult for the wires of the coil winding to overlap together, further reducing the impact of the deformation of the deformation part on the coil winding.

[0039] In technical solution thirteen and its preferred embodiment, the limiting portion is protruded from the abutment surface along the Z-axis direction and is suitable for cooperating with the yoke in the X-axis direction, which is beneficial to limiting the yoke along the X-axis direction. The setting of the abutment surface is beneficial to positioning the yoke and the iron core when they are fixed.

[0040] In technical solution fourteen and its preferred embodiment, the provision of the limiting ribs is beneficial on the one hand to limiting the yoke away from the signal terminal. The yoke can be pre-tightened during the installation process, and the yoke is not easy to shake during riveting, which is convenient for operation. On the other hand, it is beneficial for the yoke away from the signal terminal to form a narrower part for inserting into the limiting portion. Therefore, under the same volume, the magnetic pole area of ​​the yoke used to form a magnetic attraction with the armature in this technical solution is larger, and the magnetic efficiency is higher; the limiting rib is provided with a guide slope at one end away from the signal terminal along the Z-axis direction, so that the corresponding yoke is easier to insert between the limiting ribs, and the contact area with the limiting portion is smaller during insertion, the resistance is smaller, and the insertion is more labor-saving.

[0041] In technical solution fifteen and its preferred embodiment, the outer retaining wall close to the signal terminal along the Z-axis direction and the corresponding limiting portion and connecting portion are combined to form a connecting groove, which can shield the yoke close to the signal terminal to prevent the yoke from being exposed. The setting of the connecting groove allows the yoke close to the signal terminal to be inserted into the connecting groove along the Y-axis direction when installing, and then the iron core is inserted into the iron core hole to connect the iron core to the yoke close to the signal terminal, making installation convenient and labor-saving.

[0042] In technical solution sixteen and its preferred embodiment, the setting of the observation hole can be used to observe whether the yoke is installed in place during the installation process of the yoke near the signal terminal, making the installation process of the yoke more intuitive and reliable; the rivet hole is connected to the iron core hole along the Z-axis direction for the yoke and the iron core to be riveted therein, which facilitates the external riveting of the yoke and the iron core.

[0043] In technical solution seventeen and its preferred embodiment, the provision of the wiring gap can accommodate the connecting wires used to connect the coil winding to the signal terminal, thereby facilitating regular wiring.

[0044] Technical solution 18 and its preferred embodiments have the technical advantages of any one of technical solutions 1 to 17.

[0045] In technical solution 19 and its preferred embodiment, the signal terminal and the lead terminal are separated from each other along the Y-axis direction, which increases the creepage distance between the signal terminal and the lead terminal, thereby meeting safety requirements with a smaller length in the Y-axis direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0047] Figure 1 This is a three-dimensional exploded view of a magnetic latching relay according to an embodiment of the present utility model;

[0048] Figure 2 This is a three-dimensional schematic diagram of the coil frame and signal terminals of an embodiment of the utility model;

[0049] Figure 3 This is a bottom view of the coil frame according to an embodiment of the present utility model;

[0050] Figure 4 This is a three-dimensional schematic diagram of an armature assembly according to an embodiment of the present utility model;

[0051] Figure 5 for Figure 4 Side view of;

[0052] Figure 6 This is a three-dimensional schematic diagram of a magnetic latching relay according to an embodiment of the present utility model;

[0053] Figure 7 for Figure 6 A top view of

[0054] Figure 8 for Figure 7 Cross-sectional view in the AA direction;

[0055] Figure 9 for Figure 6 Side view of;

[0056] Figure 10 for Figure 9 Cross-sectional view in the AA direction.

[0057] Description of main reference numerals:

[0058] Magnetic circuit portion 100; coil assembly 10; coil frame 11; frame 110; winding shaft 111; core hole 1111; first outer retaining wall 112; abutment surface 1121; limiting portion 1122; limiting groove 1123; limiting rib 1124; guide slope 1125; second outer retaining wall 113; routing notch 1131; connecting portion 114; observation hole 1141; rivet hole 1142; first through hole 1143; connecting groove 0 1; middle retaining wall 115; wire groove 1151; deformation portion 120; mating portion 1201; accommodating groove 1202; base 1203; first winding window 116; second winding window 117; spacer 130; coil winding 12; iron core 13; signal terminal 14; first yoke 15; first magnetic drive end 151; first narrow section 152; first wide section 153; second yoke 16; second magnetic drive end 161; armature assembly 20 Permanent magnet 21; first armature 22; first engaging portion 221; second armature 23; second engaging portion 231; insulating member 24; connecting surface 241; second protrusion 242; mating cavity 02; first protrusion 243; guide portion 2431; protrusion 244; plug-in portion 245; plug-in column 246; clamping portion 247; supporting surface 248; base 200; slot 201; second through hole 202; contact portion 300; moving contact Group 30; first movable spring piece 31; first bent portion 311; second bent portion 312; second movable spring piece 32; spring piece 321; compression spring 322; connecting piece 33; movable spring strip 331; movable contact 34; static contact group 40; static contact 41; static spring strip 42; pushing portion 400; rectangular through hole 51; first through slot 52; second through slot 53; first clamping wall 54; second clamping wall 55; third clamping wall 56; housing 500. DETAILED DESCRIPTION

[0059] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0060] In the claims and the specification, unless otherwise specified, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are based on the directions and positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description, and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0061] In the claims and description, unless otherwise specified, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship or relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or elements.

[0062] In the claims and the description, unless otherwise defined, the terms "include", "have" and their variations mean "including but not limited to".

[0063] In the claims and the description, unless otherwise defined, the term "provided with" means that the technical feature thereafter is part of the technical feature therefor.

[0064] In the claims and the specification, except in the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" simply refer to the fact that features having one of these directions are perpendicular to features having another direction, and do not require that they be implemented in accordance with the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into up and down.

[0065] The magnetic latching relay controls the on / off state of an external circuit by receiving a pulsed electrical signal. In this embodiment, the pulsed electrical signal can be divided into a first pulsed electrical signal and a second pulsed electrical signal. The first pulsed electrical signal is used to control the conduction of the external circuit, and the second pulsed electrical signal is used to control the off-state of the external circuit. After receiving the first pulsed electrical signal, the magnetic latching relay switches from the off state to the on state. After the first pulsed electrical signal disappears, the magnetic latching relay remains in the on state until it receives the second pulsed electrical signal. After receiving the second pulsed electrical signal, the magnetic latching relay switches from the on state to the off state. After the second pulsed electrical signal disappears, the magnetic latching relay remains in the off state until it receives the first pulsed electrical signal.

[0066] See also Figure 1 , Figure 1 The structure of the magnetic latching relay in this embodiment is shown in FIG. Figure 1 As shown, the magnetic latching relay includes a magnetic circuit portion 100 , a contact portion 200 , a pushing portion 300 and a housing 500 .

[0067] The magnetic circuit portion 100 is configured to receive a pulsed electrical signal and, based on the pulsed electrical signal, drive the push portion 300 to move, thereby changing the state of the contact portion 200. In this embodiment, the magnetic circuit portion 100 is also configured to maintain the push portion 300 and the contact portion 200 in their current state after the pulsed electrical signal disappears, until a new pulsed electrical signal is received.

[0068] The magnetic circuit portion 100 includes a coil assembly 10 and an armature assembly 20 . The armature assembly 20 is rotatably connected to the coil assembly 10 around a rotation axis extending along the X-axis direction.

[0069] See also Figure 1 The coil assembly 10 includes a coil frame 11, a coil winding 12, an iron core 13, a signal terminal 14 and two yokes ( Figure 1 In the figure, there are the first yoke 15 and the second yoke 16).

[0070] See also Figure 2 The coil frame 11 includes a frame body 110 and two deformation parts 120 extending from the frame body 110 along the Y-axis direction. The frame body 110 includes a winding shaft 111, two outer retaining walls ( Figure 2 In the middle are the first outer retaining wall 112 and the second outer retaining wall 113), the connecting part 114 and the middle retaining wall 115.

[0071] The winding shaft 111 extends along the Z-axis and is provided with an iron core hole 1111 extending along the Z-axis. Two outer retaining walls and a middle retaining wall 115 protrude from the outer edge of the winding shaft 111. The two outer retaining walls are located at both ends of the winding shaft 111 along the Z-axis, and the middle retaining wall 115 is located in the middle of the winding shaft 111 along the Z-axis. The outer retaining wall is provided with an abutment surface 1121 and a limiting portion 1122. The abutment surface 1121 is perpendicular to the Z-axis and is suitable for abutting the yoke described below along the Z-axis. The limiting portion 1122 is provided protruding from the abutment surface 1121 along the Z-axis and is suitable for limiting the position of the yoke along the X-axis. The two outer retaining walls are respectively a first outer retaining wall 112 and a second outer retaining wall 113. Figure 2 In the embodiment, the first outer retaining wall 112 and the second outer retaining wall 113 are respectively provided at the upper end and the lower end of the winding shaft 111 .

[0072] The limiting portion 1122 of the first outer retaining wall 112 encloses a limiting slot 1123 that opens toward the armature assembly 20 (rearward). The slot wall of the limiting slot 1123 is further provided with a plurality of limiting ribs 1124 arranged along the Y-axis. The limiting ribs 1124 extend along the Z-axis, and a guiding slope 1125 is provided on one end of the limiting rib 1124 away from the second outer retaining wall 113 along the Z-axis.

[0073] The second outer retaining wall 113 extends along the Y-axis direction, and a wiring gap 1131 is provided on its surface facing the middle retaining wall 115. The wiring gap 1131 is used to accommodate the connection wires used to connect the coil winding 12 to the signal terminal 14 below. Figure 2In the embodiment, one end of the wiring notch 1131 is close to the winding shaft 111, and the other end extends to the outer edge of the rear side of the second outer retaining wall 113. The second outer retaining wall 113 is connected to the connecting portion 114 as a whole. The second outer retaining wall 113 and the corresponding limiting portion 1122 and the connecting portion 114 are enclosed to form a connecting groove 01. The connecting groove 01 is open along the Y-axis direction and is suitable for inserting the corresponding yoke iron below. The connecting groove 01 is connected to the core hole 1111. Figure 2 In the embodiment, the opening of the connecting groove 01 faces rearward.

[0074] See also Figure 2-3 The connecting portion 114 extends along the Y-axis direction and its length along the Y-axis direction is longer than the length of the second outer retaining wall 113. One end of the connecting portion 114 is flush with the second outer retaining wall 113, and the other end extends outside the second outer retaining wall 113. The connecting portion 114 is provided with an observation hole 1141 and a rivet hole 1142. The observation hole 1141 is connected to the connection groove 01 along the X-axis direction; the rivet hole 1142 is connected to the iron core hole 1111 along the Z-axis direction for the yoke and the iron core 13 to be riveted therein. The connecting portion 114 is also used to install the signal terminal 14 below. Figure 3 In the figure, the connecting portion 114 is provided with three first through holes 1143 arranged along the X-axis direction and penetrating along the Z-axis direction. The first through holes 1143 are formed in the portion of the connecting portion 114 extending outside the second outer retaining wall 113 and are used for installing the signal terminal 14.

[0075] Still see Figure 2 The middle retaining wall 115 is provided with a wire slot 1151 extending along the Z-axis and opening along the X-axis. The wire slot 1151 is used to pass the coil winding 12. There are two wire slots 1151, and the openings of the two wire slots 1151 face away from each other along the X-axis. Two deformable portions 120 extend from the middle retaining wall 115. The deformable portions 120 and the wire slot 1151 are located on either side of a second plane perpendicular to the Y-axis and passing through the central axis of the winding shaft 111. A gap 130 is formed along the X-axis between the side end of the middle retaining wall 115 away from the wire slot 1151 along the Y-axis and the deformable portion 120.

[0076] A first winding window 116 is formed between the middle retaining wall 115 and the second outer retaining wall 113 , and a second winding window 117 is formed between the middle retaining wall 115 and the first outer retaining wall 112 .

[0077] The deformable portion 120 comprises a mating portion 1201, a receiving groove 1202, and a base 1203. The mating portion 1201 is located at the end of the deformable portion 120 away from the winding shaft 111. The mating portion 1201 has an arc-shaped outer edge surface arranged around an axis parallel to the X-axis. The receiving groove 1202 is adjacent to the mating portion 1201 and is closer to the winding shaft 111 than the mating portion 1201. The groove wall of the receiving groove 1202 near the mating portion 1201 is arc-shaped. The base 1203 is connected to the middle retaining wall 115. The projection of the mating portion 1201 on a plane perpendicular to the Y-axis lies within the projection of the base 1203 on the same plane.

[0078] The coil winding 12 is wound on the winding shaft 111 . In this embodiment, the coil winding 12 includes a first coil wound in the first winding window 116 and a second coil wound in the second winding window 117 .

[0079] The iron core 13 passes through the iron core hole 1111 and extends along the Z-axis direction.

[0080] The signal terminal 14 is fixed to the frame 110 and is located on one side of the frame 110 along the Z-axis direction. In this embodiment, the signal terminal 14 includes a starting terminal, a common terminal and an end terminal. The pin of the signal terminal 14 passes through the three first through holes 1143 of the connecting portion 114 and is electrically connected to the coil winding 12. Specifically, after the connecting wire is led out from the starting terminal, it passes through one of the routing gaps 1131 to reach the first winding window 116, and the first coil is wound in the first winding window 116, and then passes through one of the wire grooves 1151 to reach the second winding window 117, and the second coil is wound in the second winding window 117, and then passes through another wire groove 1151 to enter the first winding window 116, and is wound several times with a larger pitch outside the first coil, and then is guided through another routing gap 1131 to be wound on the end terminal.

[0081] In this embodiment, see Figure 1, there are two yokes and both are made of magnetic conductive material. The two yokes are respectively a first yoke 15 and a second yoke 16. The two yokes are respectively fixed to the two ends of the iron core 13 along the Z-axis direction, and the ends of the two yokes away from the iron core 13 respectively form magnetic drive ends. The two magnetic drive ends are respectively a first magnetic drive end 151 and a second magnetic drive end 161. Among them, the first magnetic drive end 151 is formed on the first yoke 15, and the second magnetic drive end 161 is formed on the second yoke 16. In this embodiment, the two yokes are both L-shaped, with the ends of their longer arms fixed to the ends of the iron core 13, and their shorter arms extend toward each other to form magnetic drive ends. The two magnetic drive ends are arranged along the Z-axis direction and both extend along the Z-axis direction to limit the movement of the armature assembly 20 along the Y-axis direction. In this embodiment, the longer wall of the first yoke 15 is further provided with a narrower first narrow section 152 and a wider first wide section 153. The first narrow section 152 is adapted to be inserted into the retaining groove 1123. The first wide section 153 is integrally connected to the first magnetic drive end 151. The first narrow section 152 is further provided with a through hole for inserting the iron core 13. The longer arm of the second yoke 16 is provided with a through hole for inserting the iron core 13. The portion of the iron core 13 that passes through the through hole in the first narrow section 152 and the portion that passes through the through hole in the longer arm of the second yoke 16 can be riveted to the first yoke 15 and the second yoke 16 by impact.

[0082] In this embodiment, the coil assembly 10 is stimulated by the pulse electric signal to reverse the polarity temporarily formed at the two magnetic drive ends. "Temporarily formed" in this embodiment means that the polarity of the magnetic drive end formed by the pulse electric signal disappears as the pulse electric signal disappears. "Reversal" in this embodiment means that when the current direction of the pulse electric signal received by the coil assembly 10 this time is different from the current direction of the pulse electric signal received last time, the polarity of the magnetic drive end temporarily formed this time is opposite to the polarity of the magnetic drive end temporarily formed last time. In this embodiment, as mentioned above, the pulse electric signal can be divided into a first pulse electric signal and a second pulse electric signal. The first pulse electric signal is correspondingly used to control the conduction of the external circuit, and the second pulse electric signal is correspondingly used to control the shutdown of the external circuit. In this embodiment, the first pulse electric signal and the second pulse electric signal are electric pulses with opposite current directions.

[0083] The armature assembly 20 is rotatably connected to the coil assembly 10 about a rotation axis extending along the X-axis, and rotates between a first position and a second position. When the armature assembly 20 rotates to the first position, the latching relay is in the off state, disconnecting the electrical connection between the external power supply and the load. When the armature assembly 20 rotates to the second position, the latching relay is in the on state, connecting the electrical connection between the external power supply and the load.

[0084] See also Figure 4-5 , Figure 4-5 The armature assembly 20 in this embodiment is shown. The armature assembly 20 includes a permanent magnet 21 ( Figure 8 and Figure 10 ), two armatures and an insulating member 24. The permanent magnet 21 is formed of magnetized magnetic steel. In other embodiments, the permanent magnet 21 may also be made of other permanent magnetic materials, such as neodymium iron boron permanent magnets. The permanent magnet 21 has two fixed magnetic poles with opposite polarities. The two armatures are respectively fixed to the two magnetic poles of the permanent magnet 21. Each armature is provided with two engaging portions suitable for engaging with the magnetic drive end. When the magnetic circuit is in the magnetic holding state, each armature has an engaging portion that attracts the corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends. In this embodiment, the two armatures respectively form two first suction parts 221 and two second suction parts 231, and the two armatures are respectively the first armature 22 and the second armature 23, wherein the first armature 22 is provided with two first suction parts 221 at both ends in the length direction; the second armature 23 is provided with two second suction parts 231 at both ends in the length direction, and the first suction part 221 and the second suction part 231 are respectively located on both sides of the first plane along the Y-axis direction, and the first plane is perpendicular to the Y-axis direction and passes through the rotation axis of the armature assembly 20.

[0085] The insulating part 24 is fixedly connected to the permanent magnet part 21 and the two armatures. For example, the insulating part 24 can be an injection molded part. The insulating part 24 wraps the two armatures and the permanent magnet part 21 to form a whole. Both ends of the first armature 22 and the second armature 23 are located outside the insulating part 24.

[0086] In this embodiment, the insulating member 24 is provided with two connecting surfaces 241 that are opposite to each other along the X-axis direction, and a protrusion and a protrusion 244 are provided on the connecting surface 241. The protrusion includes a first protrusion 243 and a second protrusion 242, wherein the first protrusion 243 is closer to the coil winding 12 (more forward) than the second protrusion 242, and the second protrusion 242 forms a groove with an opening toward the first protrusion 243. The first protrusion 243 and the second protrusion 242 enclose a mating cavity 02, and the openings of the two mating cavities 02 are opposite to each other along the X-axis direction. The mating cavity 02 is suitable for rotationally mating with the mating portion 1201 mentioned above, and the side cavity wall of the mating cavity 02 is suitable for point contact with the mating portion 1201 along a cross section perpendicular to the X-axis direction. The side cavity wall of the mating cavity 02 has a first end connected to the connecting surface 241 and a second end away from the connecting surface 241. On the projection surface perpendicular to the X-axis direction, the projection of the first end covers the projection of the second end. The first protrusion 243 is provided with a guide portion 2431 on the portion facing the coil winding 12. Figure 4In the embodiment, the inner surfaces of the second protrusion 242 and the first protrusion 243 are both perpendicular to the connecting surface 241, while the outer surface of the second protrusion 242 is inclined relative to the connecting surface 241. The outer surface of the first protrusion 243 forms a guide portion 2431, which is an inclined surface inclined relative to the connecting surface 241. The guide portion 2431 is adapted to cooperate with the inclined surface of the mating portion 1201 described above so that when the armature assembly 20 is inserted along the Y-axis direction, the two deformable portions 120 deform away from each other along the X-axis direction. The first protrusion 243 is adapted to be inserted into the accommodating groove 1202 described above and adapted to rotate about the rotation axis. The protrusion 244 is located in the mating cavity 02 and adapted to be in point contact with the mating portion 1201. Figure 4 In FIG. 2 , the protrusion 244 is hemispherical.

[0087] The side of the insulating member 24 away from the winding shaft 111 ( Figure 4 A connecting portion 245 extending along the Z-axis is further provided (at the rear side of the center). Connecting portion 245 includes three connecting posts 246 spaced apart along the X-axis, with a latching portion 247 provided on the middle connecting post 246. Connecting portion 245 also forms support surfaces 248 perpendicular to the Z-axis on either side of the three connecting posts 246 along the X-axis.

[0088] See also Figure 2 The base 200 is connected to the coil frame 11 as a whole. In this embodiment, the base 200 is connected to the connecting portion 114 and one end (right end) flush with the second outer retaining wall 113 to form a base extending along the Y-axis direction.

[0089] See also Figure 2-3 The base 200 is provided with a plurality of slots 201 arranged along the Y-axis direction and extending along the X-axis direction. At least two slots 201 are provided with a second through hole 202 at one end along the X-axis direction. The slots 201 can be used for installing the movable contact group 30 and the static contact group 40 below, and the second through hole 202 can be used for the pins of the lead-out terminal below to pass through and extend out.

[0090] In this embodiment, the armature assembly 20 and the contact portion 200 are respectively located on both sides of the coil winding 12 along the Y-axis direction. Figure 6 In the embodiment shown in FIG. 1 , the armature assembly 20 is located on the left side of the coil winding 12 , and the contact portion 200 is located on the right side of the coil winding 12 .

[0091] See also Figure 1 and Figure 6 The contact portion 200 includes a moving contact group 30 and a stationary contact group 40 corresponding to the moving contact group 30. The moving contact group 30 is closer to the winding shaft 111 than the stationary contact group 40. In this embodiment, see Figure 1The movable contact assembly 30 includes a first movable spring 31, a second movable spring 32, a connecting piece 33 and a movable contact 34. The first movable spring 31 is closer to the static contact assembly 40 than the second movable spring 32. The bottom ends of the first movable spring 31 and the second movable spring 32 are locked with the connecting piece 33. The bottom end of the connecting piece 33 is provided with a movable spring insert 331 extending along the Z-axis direction. The upper ends of the first movable spring 31 and the second movable spring 32 are fixedly connected to the movable contact 34. The first movable spring 31 and the second movable spring A gap is formed between the movable contact 34 and the connecting piece 33. The first movable spring piece 31 and the second movable spring piece 32 are separated from each other above the movable contact 34, forming a gap. The top end of the first movable spring piece 31 bends toward the static contact assembly 40 (forward) to form a bend perpendicular to the Z-axis. The bend includes two first bends 311 arranged along the X-axis and a second bend 312 located between the first bends 311, with the first bend 311 being lower than the second bend 312. The portion of the second movable spring piece 32 located above the movable contact 34 forms a compression spring 322. The compression spring 322 is elastically deformable relative to the first movable spring piece 31. The top end of the compression spring 322 bends toward the winding shaft 111 (backward) to form two V-shaped spring pieces 321 arranged along the X-axis. A static spring strip 42 extending along the Z-axis is provided at the bottom end of the static contact assembly 40 , and a static contact 41 corresponding to the moving contact 34 is provided at the upper end of the static contact assembly 40 .

[0092] See also Figure 7-8 The bottom ends of the movable contact assembly 30 and the stationary contact assembly 40 are respectively inserted into the two slots 201 of the base 200, and the movable spring insert 331 and the stationary spring insert 42 respectively pass through the corresponding second through-holes 202 to form lead terminals for external wires. Therefore, the signal terminal 14 and the lead terminal are separated from each other along the Y-axis direction.

[0093] See also Figure 1 and Figure 8In this embodiment, the pushing portion 300 is a pushing card extending in the Y-axis direction. A rectangular through hole 51 is provided in the middle of the pushing card. The rectangular through hole 51 can be sleeved outside the longer arm of the limiting portion 1122 and the first yoke 15 and leaves a margin of movement in the Y-axis direction. The pushing card can be supported on the supporting surface 248 of the plug-in portion 245 mentioned above. The two ends of the pushing card along the Y-axis direction are respectively provided with a first through groove 52 and a second through groove 53 that pass through the Z-axis direction. The pushing card is also provided with a first clamping wall 54, a second clamping wall 55 and a third clamping wall 56 along the Y-axis direction. The inner surface of the first clamping wall 54 forms the groove wall of the first through groove 52, the second clamping wall 55 and the third clamping wall 56 are opposite to each other and their inner surfaces both form two groove walls opposite to each other in the Y-axis direction of the second through groove 53, wherein the plug of the insulating member 24 The connecting column 246 is suitable for being inserted into the first through slot 52 and the clamping portion 247 is suitable for being clamped with the upper surface of the first clamping wall 54. There is a gap between the connecting column 246 and the first through slot 52 to allow the connecting column 246 to be deformed and inserted into the first through slot 52. The supporting surface 248 of the insulating member 24 can support the push card. The top end of the dynamic contact member group 30 is suitable for being inserted into the second through slot 53 and the second clamping wall 55 is suitable for being inserted between the first bending portion 311 and the second bending portion 312 so as to be clamped with the bending portion along the Z-axis direction. At the same time, the first bending portion 311 can also support the push card. The compression spring 322 abuts against the inner surface of the third clamping wall 56, that is, abuts against the left groove wall of the second through slot 53. The spring piece 321 at the top end of the compression spring 322 is suitable for abutting against the upper surface of the third clamping wall 56 to prevent the second dynamic spring piece 32 from being separated from the push card.

[0094] See also Figure 1 The shell 500 is used to cover the magnetic circuit part 100, the contact part 300 and the pushing part 400, and the shell 500 is used to be fixedly connected to the base mentioned above.

[0095] In actual applications, the connection between the coil winding 12 and the signal terminal 14 has been described above, and the armature assembly 20, the movable contact assembly 30 and the stationary contact assembly 40 are all integrated.

[0096] The installation method of the magnetic circuit part of this embodiment is as follows:

[0097] First, the longer arm of the second yoke 16 is inserted into the connecting slot 01 from the opening of the connecting slot 01 along the Y-axis direction. During the insertion of the second yoke 16, the second yoke 16 can be observed through the observation hole 1141 to see whether it is inserted into place. If it is inserted into place, the iron core 13 is inserted into the iron core hole 1111 and the iron core 13 is inserted into the through hole of the longer arm of the second yoke 16. Then, the longer arm of the second yoke 16 is riveted to the iron core 13 by impact in the rivet hole 1142.

[0098] Then, the armature assembly 20 is installed. When installing the armature assembly 20, the armature assembly 20 can be first inserted obliquely relative to the Z-axis direction, so that the second magnetic drive end 161 of the second yoke 16 is inserted into the gap between the first armature 22 and the second armature 23 at the bottom end of the armature assembly 20, and then the armature assembly 20 is inserted between the two deformable parts 120 along the Y-axis direction. The guide part 2431 of the first protrusion 243 of the armature assembly 20 cooperates with the inner side inclined surfaces of the two matching parts 1201 and forces the two deformable parts 120 to deform away from each other along the X-axis direction. Figure 9-10 The first protrusion 243 is then inserted into the accommodating groove 1202 along the X-axis direction. The two deformable parts 120 approach each other along the X-axis direction, and the matching part 1201 is inserted into the matching cavity 02 along the Y-axis direction and rotates with the matching cavity 02. The cavity wall of the matching cavity 02 and the matching part 1201 are in point contact on the projection surface perpendicular to the X-axis direction. The protrusion 244 abuts against the matching part 1201 and makes point contact with the matching part 1201. The two deformable parts 120 then recover their deformation, so that the armature assembly 20 and the two deformable parts 120 are limited in the three directions of the X, Y and Z axes.

[0099] Then install the first yoke 15, insert the longer arm of the first yoke 15 into the limit groove 1123 along the Z-axis direction, and insert the first magnetic drive end 151 of the first yoke 15 between the first armature 22 and the second armature 23 at the top of the armature assembly 20 along the Z-axis direction, insert the through hole of the longer arm of the first yoke 15 into the iron core 13, and then rivet the first yoke 15 to the iron core 13 by impact.

[0100] The installation method of the magnetic latching relay of this embodiment is as follows:

[0101] After the magnetic circuit portion 100 is installed, the contact portion 200 is then installed on the base 200. The bottom ends of the movable contact assembly 30 and the bottom ends of the stationary contact assembly 40 are respectively inserted into the two corresponding slots 201, and the movable spring insert 331 and the stationary spring insert 42 are respectively inserted through the corresponding second through-holes 202.

[0102] When the cam 312 is in the closed position, the locking cam 313 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 315 of the locking cam 316 is in the closed position, and the cam 316 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 314 of the locking cam 316 is in the closed position, and the cam 314 of the

[0103] The working principle of the magnetic latching relay of this embodiment is:

[0104] When the signal terminal 14 receives the first pulse signal, the armature assembly 20 rotates from the first position to the second position and drives the pushing portion 300 to move along the Y-axis direction toward the static contact assembly 40. When the pushing portion 300 moves, it drives the second movable spring 32 to move toward the static contact assembly 40. The second movable spring 32 pushes the first movable spring 31 toward the static contact assembly 40 until the movable contact 34 and the static contact 41 are closed. Due to the provision of the compression spring 322, the third engaging wall 56 of the pushing portion 300 can continue to push the compression spring 322 and cause the second movable spring 32 to apply a holding force to the movable contact 34. The compression spring 322 stores elastic potential energy, so that the magnetic latching relay remains stably in the on state.

[0105] When the signal terminal 14 receives the second pulse signal, the armature assembly 20 rotates from the second position to the first position, and drives the pushing part 300 to move along the Y-axis direction away from the static contact group 40, and the compression spring 322 releases its elastic potential energy. When the distance between the top of the second movable spring piece 32 and the first movable spring piece 31 returns to its previous state, that is, when the compression spring 322 recovers its deformation, the second clamping wall 55 of the pushing part 300 drives the first movable spring piece 31 away from the static contact group 40, so that the movable contact 34 is away from the static contact 41, thereby making the magnetic holding relay in the off state.

[0106] In this embodiment, since the coil frame 11 is provided with two deforming parts 120, the two deforming parts 120 are suitable for deforming away from each other along the X-axis direction to accommodate the armature assembly 20 inserted along the Y-axis direction and are suitable for restoring deformation to be rotatably connected with the armature assembly 20. On the one hand, the two deforming parts 120 are formed by synchronous processing, which is easy to control the accuracy and reduce the influence of the deviation of the installation position of the armature assembly 20 caused by production errors and assembly errors. When the armature assembly 20 cooperates with the deforming part 120, the rotation axes of the armature assembly 20 at both ends along the X-axis direction are easy to coincide and not easy to get stuck; on the other hand, since the armature assembly 20 is inserted along the Y-axis direction, the two deforming parts 120 are suitable for deforming away from each other along the X-axis direction. Only one side of the deforming part 120 along the Y-axis direction is constrained by other walls of the coil frame 11. The constrained part is smaller than the second solution of the prior art. The deforming part 120 is easier to deform, simpler to assemble, and easy to recover after deformation, thereby ensuring the stability of the armature assembly 20 after assembly.

[0107] In this embodiment, in the magnetic holding state, the two armatures each have an attraction portion that attracts the corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends. The closed magnetic circuit passes from one magnetic pole of the permanent magnet 21 through an attraction portion, a magnetic drive end, the iron core 13, the other magnetic drive end and the other attraction portion back to the other magnetic pole of the permanent magnet 21. Compared with the closed magnetic circuit that only passes through one magnetic drive end, the closed magnetic circuit of this technical solution has a greater magnetic attraction force and a more stable magnetic circuit. When a large current passes through the magnetic holding relay, this advantage can avoid the static contact 41 and the moving contact 34 from bouncing off each other when a large current passes through, causing the risk of explosion.

[0108] In this embodiment, the insulating part 24 is fixed to the permanent magnet part 21 and is provided with two mating cavities 02. The openings of the two mating cavities 02 are away from each other along the X-axis direction. The two deformation parts 120 are respectively provided with mating parts 1201 that are rotatably mated with the mating cavities 02. Therefore, the rotation axis of the armature assembly 20 is formed on the mating part 1201 of the deformation part 120. Compared with the mating cavity 02 formed on the deformation part 120, the volume of the part of the deformation part 120 used to form the rotational mating is larger, so the strength for the rotational mating is greater. When the gravity direction of the armature assembly is the Z-axis direction, the deformation of the deformation part 120 due to strength difference can avoid the displacement of the rotation axis of the armature assembly 20 in the Z-axis direction, which causes the rotation axes of the armature assembly 20 at both ends of the X-axis direction to not overlap, and the rotation becomes stuck.

[0109] In this embodiment, the protrusions enclose the mating cavity 02. Compared to solutions with mating holes in the connecting surface 241, this allows for a thinner wall thickness at the connecting surface 241, thereby reducing the material used for the insulating member 24 and lowering costs. The portion of the protrusion facing the coil winding 12 is provided with a guide portion 2431. The guide portion 2431 is adapted to engage with the oblique surface of the mating portion 1201. On the one hand, when the armature assembly 20 is inserted along the Y-axis, the deformable portion 120 is subjected to the X-axis force component applied by the guide portion 2431, making it easier for the two deformable portions 120 to deform away from each other along the X-axis. On the other hand, the provision of the guide portion 2431 also reduces the contact area between the armature assembly 20 and the deformable portion 120 when inserted along the Y-axis, thereby reducing insertion resistance and reducing insertion effort.

[0110] In this embodiment, the side cavity wall of the mating cavity 02 and the mating part 1201 are in point contact on the projection surface perpendicular to the X direction. Compared with surface contact, the contact area is smaller and the friction is smaller, which can reduce the scraping of the side cavity wall of the mating cavity 02, which is beneficial to improving the service life of the deformation part 120 and the insulating part 24; the protrusion 244 is located in the mating cavity 02 and is suitable for point contact with the mating part 1201. Compared with surface contact, the contact area is smaller and the friction is smaller, which can reduce the scraping of the connecting surface 241, which is beneficial to improving the service life of the deformation part 120 and the insulating part 24. In addition, it can also reduce the resistance encountered by the armature assembly 20 during rotation, so that the magnetic driving force required to be provided by the coil winding 12 is smaller, which is beneficial to reducing the volume of the coil assembly 10, and can also reduce the volume of the magnetic circuit part 100 and the volume of the relay as a whole.

[0111] In this embodiment, the side cavity wall of the mating cavity 02 has a first end connected to the connecting surface 241 and a second end away from the connecting surface 241. On the projection surface perpendicular to the X-axis direction, the projection of the first end covers the projection of the second end, so that the thickness of the side cavity wall of the mating cavity 02 gradually increases in the direction toward the connecting surface 241, thereby obtaining a stronger supporting effect, and having better shear strength when the gravity direction of the armature assembly is the Z-axis direction.

[0112] In this embodiment, the projection of the mating portion 1201 on the projection plane perpendicular to the Y-axis direction is located within the projection of the base 1203 on the projection plane. Compared with the projection of the mating portion 1201 on the projection plane perpendicular to the Y-axis direction being located outside the projection plane of the base 1203, this means that no convex axis inserted into the mating cavity 02 is formed on the mating portion 1201. When the gravity direction of the armature assembly 20 is the Z-axis direction, the shear force caused by the gravity of the armature assembly 20 can be reduced, thereby avoiding the displacement of the rotation axis of the armature assembly 20 along the Z-axis direction caused by the shear force, and the resulting problems of the rotation axes of the armature assembly 20 at both ends along the X-axis direction not coinciding and the rotation being stuck. The cooperation between the accommodating groove 1202 and the first protrusion 243 can limit the armature assembly 20 from disengaging from the deformation portion 120 along the Y-axis direction, so that the connection between the armature assembly 20 and the coil assembly 10 is more stable; the guide portion 2431 is formed on the first protrusion 243, and the accommodating groove 1202 is adjacent to the matching portion 1201 and is closer to the coil winding 12 than the matching portion 1201, so that the first protrusion 243 is inserted into the accommodating groove 1202 after the guide portion 2431 and the matching portion 1201 are obliquely matched, and the insertion of the first protrusion 243 is smoother, which further makes the assembly of the armature assembly 20 simpler.

[0113] In this embodiment, the frame 110 is provided with a winding shaft 111, a middle retaining wall 115 and two outer retaining walls, so that parts of the coil assembly 10 can be mounted on the frame 110, which can reduce production errors and assembly errors. The setting of the middle retaining wall 115 and the two outer retaining walls can protect the coil winding 12; the two deformation parts 120 extend from the middle retaining wall 115, which can reduce the impact of the deformation of the deformation part 120 on the coil winding 12.

[0114] In this embodiment, the setting of the wire groove 1151 is conducive to the connection of the coil winding 12 with the signal terminal 14, and the deformation part 120 and the wire groove 1151 are located on both sides of the second plane, that is, the deformation part 120 and the wire groove 1151 are far away from each other, which further makes it difficult for the deformation part 120 to affect the wire groove 1151 during elastic deformation, thereby further reducing the influence of the deformation of the deformation part 120 on the coil winding 12. Similarly, it also avoids the setting of the wire groove 1151 affecting the strength of the deformation part 120, causing the strength of the deformation part 120 used to support the armature assembly 20 to be weakened.

[0115] In this embodiment, a gap 130 is formed between the side end of the middle retaining wall 115 away from the wire groove 1151 along the Y-axis direction and the deformable portion 120 along the X-axis direction. The formation of the gap 130 is conducive to the deformation of the deformable portion 120 along the X-axis direction, and the deformable portion 120 is located at the side end of the wire groove 1151 and thus away from the wire groove 1151, further reducing the influence of the deformation of the deformable portion 120 on the coil winding 12. In addition, the setting of the gap 130 makes rational use of space without affecting the basic function of the middle retaining wall 115, so that the deformable portion 120 can obtain better deformation ability without excessive extension, which is conducive to reducing the space occupied in the Y-axis direction.

[0116] In this embodiment, the signal terminal 14 is fixed to the frame 110 and is located on one side along the Z-axis direction. There are two wire-passing grooves 1151, and the openings of the two wire-passing grooves 1151 are separated from each other along the X-axis direction, so that the coil winding 12 can pass through the wires twice and be connected to the signal terminal 14, so that the wires of the coil winding 12 are not easily overlapped together, further reducing the influence of the deformation of the deformation part 120 on the coil winding 12.

[0117] In this embodiment, the limiting portion 1122 is protruded from the abutting surface 1121 along the Z-axis direction and is suitable for cooperating with the yoke in the X-axis direction, which is beneficial to limiting the yoke along the X-axis direction. The setting of the abutting surface 1121 is beneficial to positioning the yoke and the iron core 13 when they are fixed.

[0118] In this embodiment, the setting of the limiting rib 1124 is beneficial to limiting the first yoke 15 on the one hand. The first yoke 15 can be pre-tightened during the installation process, and the first yoke 15 is not easy to shake during riveting, which is convenient for operation. On the other hand, it is beneficial for the first yoke 15 to form a narrower part that is inserted into the limiting portion 1122. Therefore, under the same volume, the magnetic pole area of ​​the yoke used to form a magnetic attraction with the armature in this technical solution is larger, and the magnetic efficiency is higher; the limiting rib 1124 is provided with a guide slope 1125 at one end away from the signal terminal 14 along the Z-axis direction, so that the corresponding first yoke 15 is easier to insert between the limiting ribs 1124, and the contact area with the limiting portion 1122 during insertion is smaller, the resistance is smaller, and the insertion is more labor-saving.

[0119] In this embodiment, the second outer retaining wall 113 and the corresponding limiting portion and connecting portion 114 are enclosed to form a connecting groove 01, which can block the second yoke 15 and prevent the second yoke 15 from being exposed. The setting of the connecting groove 01 allows the second yoke 16 to be inserted into the connecting groove 01 along the Y-axis direction when installing, and then the iron core 13 is inserted into the iron core hole 1111 to connect the iron core 13 to the yoke near the signal terminal 14, which is convenient and labor-saving to install. The setting of the observation hole 1141 allows the second yoke 16 to be observed during the installation process to see whether it is installed in place, making the installation process of the second yoke 16 more intuitive and reliable; the rivet hole 1142 connects to the iron core hole 1111 along the Z-axis direction for the second yoke 16 and the iron core 13 to be riveted therein, making it convenient to rivet the second yoke 16 and the iron core 13 externally.

[0120] In this embodiment, the arrangement of the wiring gap 1131 can accommodate the connection wires used to connect the coil winding 12 to the signal terminal 14, thereby facilitating regular wiring.

[0121] In this embodiment, the signal terminal 14 and the lead terminal are separated from each other along the Y-axis direction, which increases the creepage distance between the signal terminal 14 and the lead terminal, thereby meeting safety requirements with a smaller length in the Y-axis direction.

[0122] The above description of the specification and embodiments is used to explain the scope of protection of the present application, but does not constitute a limitation on the scope of protection of the present application.

Claims

1. A magnetic circuit portion (100), comprising a coil assembly (10) and an armature assembly (20), wherein the coil assembly (10) comprises a coil frame (11), a signal terminal (14), and a coil winding (12) wound on the coil frame (11), wherein a winding axis of the coil winding (12) extends in the Z-axis direction, and the armature assembly (20) rotates relative to the coil assembly (10) about a rotation axis extending in the X-axis direction; wherein: The coil frame (11) is provided with two deforming parts (120), and the two deforming parts (120) are suitable for deforming away from each other along the X-axis direction so that the armature assembly (20) can be inserted between the two deforming parts (120), and are suitable for recovering the deformation so as to be rotatably connected with the armature assembly (20).

2. A magnetic circuit portion (100) according to claim 1, characterized in that: The magnetic circuit portion (100) has a magnetic holding function; the coil assembly (10) is provided with two magnetic drive ends; the armature assembly (20) comprises a permanent magnet (21) and two armatures, the two armatures are respectively fixed to two magnetic poles of the permanent magnet (21), and each armature is respectively provided with two attracting parts suitable for attracting the magnetic drive end; when the magnetic circuit portion (100) is in a magnetic holding state, the two armatures each have an attracting part that attracts the corresponding magnetic drive end to form a closed magnetic circuit passing through the two magnetic drive ends.

3. A magnetic circuit portion (100) according to claim 2, characterized in that: The armature assembly (20) further includes an insulating member (24), the insulating member (24) being fixedly connected to the permanent magnet member (21) and provided with two mating cavities (02), the openings of the two mating cavities (02) being divergent from each other along the X-axis direction; and the two deformable portions (120) are respectively provided with mating portions (1201) that rotatably engage with the mating cavities (02).

4. A magnetic circuit portion (100) according to claim 3, characterized in that: The insulating member (24) is provided with two connecting surfaces (241) facing away from each other along the X-axis direction, the connecting surfaces (241) are provided with protrusions, the protrusions enclose the matching cavity (02), and the portion of the protrusion facing the coil winding (12) is provided with a guide portion (2431), the guide portion (2431) is suitable for matching with the inclined surface of the matching portion (1201), so that when the armature assembly (20) is inserted along the Y-axis direction, the two deformation portions (120) are deformed away from each other along the X-axis direction.

5. A magnetic circuit portion (100) according to claim 4, characterized in that: The side cavity wall of the matching cavity (02) is suitable for being in point contact with the matching portion (1201) on a projection surface perpendicular to the X-axis direction.

6. A magnetic circuit portion (100) according to claim 4, characterized in that: The fitting cavity (02) has a first end connected to the connecting surface (241) and a second end away from the connecting surface (241); on a projection surface perpendicular to the X-axis direction, the projection of the first end covers the projection of the second end.

7. A magnetic circuit portion (100) according to claim 4, characterized in that: A protrusion (244) is provided on the connecting surface (241), and the protrusion (244) is located in the matching cavity (02) and is suitable for point contact with the matching portion (1201).

8. A magnetic circuit portion (100) according to claim 4, characterized in that: The coil frame (11) is provided with a frame (110), the deformation portion (120) is extended from the frame (110) along the Y-axis direction, the deformation portion (120) is provided with a base (1203) connected to the frame (110), the projection of the matching portion (1201) on the projection plane perpendicular to the Y-axis direction is located within the projection of the base (1203) on the projection plane; the deformation portion (120) is provided with a receiving groove (1203) 02), the accommodating groove (1202) is adjacent to the matching portion (1201) and is closer to the coil winding (12) than the matching portion (1201); the protruding portion includes a first protrusion (243) suitable for extending into the accommodating groove (1202) along the X-axis direction, the accommodating groove (1202) is suitable for allowing the first protrusion (243) to rotate around the rotation axis, and the guide portion (2431) is formed on the first protrusion (243).

9. A magnetic circuit portion (100) according to claim 8, characterized in that: The frame (110) is provided with a winding shaft (111), a middle retaining wall (115) and two outer retaining walls; the winding shaft (111) extends along the Z-axis direction and is provided with an iron core hole (1111) passing through along the Z-axis direction; the middle retaining wall (115) and the outer retaining walls protrude from the outer edge of the winding shaft (111); the middle retaining wall (115) is located in the middle of the winding shaft (111) along the Z-axis direction; the two outer retaining walls are located at both ends of the winding shaft (111) along the Z-axis direction; and the two deformation parts (120) extend from the middle retaining wall (115).

10. A magnetic circuit portion (100) according to claim 9, characterized in that: The middle retaining wall (115) is provided with a wire passing groove (1151) which penetrates along the Z-axis direction and opens along the X-axis direction, and the wire passing groove (1151) is used for passing the coil winding (12); the deformation portion (120) and the wire passing groove (1151) are located on both sides of a second plane, and the second plane is perpendicular to the Y-axis direction and passes through the central axis of the winding shaft (111).

11. A magnetic circuit portion (100) according to claim 10, characterized in that: A gap (130) is formed between the side end of the middle retaining wall (115) away from the wire groove (1151) along the Y-axis direction and the deformation portion (120) along the X-axis direction.

12. A magnetic circuit portion (100) according to claim 10, characterized in that: The coil assembly (10) further includes an iron core (13) and two yokes; the signal terminal (14) is fixed to the frame (110) and is located on one side of the frame (110) along the Z-axis direction; the coil winding (12) is wound around the winding shaft (111) and is electrically connected to the signal terminal (14); the iron core (13) passes through the iron core hole (1111), and the two yokes are respectively fixed to the two ends of the iron core (13) along the Z-axis direction; the number of the wire slots (1151) is two, and the openings of the two wire slots (1151) are opposite to each other along the X-axis direction.

13. A magnetic circuit portion (100) according to claim 12, characterized in that: The outer retaining wall is provided with an abutting surface (1121) and a limiting portion (1122), wherein the abutting surface (1121) is suitable for abutting the yoke along the Z-axis direction, and the limiting portion (1122) is protruded from the abutting surface (1121) along the Z-axis direction and is suitable for limiting cooperation with the yoke along the X-axis direction.

14. A magnetic circuit portion (100) as claimed in claim 13, characterized in that A limiting portion (1122) away from the signal terminal (14) in the Z-axis direction is provided with a limiting rib (1124) suitable for cooperating with the yoke in a limiting manner, the limiting rib (1124) extending along the Z-axis direction, and a guiding inclined surface (1125) is provided at one end of the limiting rib (1124) away from the signal terminal (14) in the Z-axis direction.

15. A magnetic circuit portion (100) according to claim 13, characterized in that: The frame (110) is further provided with a connecting portion (114), the signal terminal (14) is fixedly connected to the connecting portion (114) and passes through the connecting portion (114), and an outer retaining wall close to the signal terminal (14) along the Z-axis direction and the corresponding limiting portion (1122) and the connecting portion (114) are enclosed to form a connecting groove (01), the connecting groove (01) is open along the Y-axis direction and is suitable for the corresponding yoke to be inserted, and the connecting groove (01) is connected to the iron core hole (1111).

16. A magnetic circuit portion (100) according to claim 15, characterized in that: The connecting portion (114) is provided with an observation hole (1141) and a rivet hole (1142), wherein the observation hole (1141) is connected to the connecting groove (01) along the X-axis direction; and the rivet hole (1142) is connected to the iron core hole (1111) along the Z-axis direction for riveting the yoke and the iron core (13) therein.

17. A magnetic circuit portion (100) according to claim 15, characterized in that: An outer retaining wall close to the signal terminal (14) along the Z-axis direction extends along the Y-axis direction and close to the signal terminal (14), and a wiring gap (1131) is provided on a surface of the outer retaining wall facing the middle retaining wall (115). The wiring gap (1131) is used to accommodate a connecting wire of the coil winding (12) for connecting to the signal terminal (14).

18. A magnetic latching relay, characterized in that: The invention comprises a base (200), a contact portion (300), a pushing portion (400) and a magnetic circuit portion (100) as described in claims 1 to 17, wherein the coil frame (11) is connected to the base (200) as a whole, the contact portion (300) is mounted on the base (200) and comprises a moving contact group (30) and a stationary contact group (40), the stationary contact group (40) is provided with a stationary contact (41), the moving contact group (30) is provided with a moving contact (34), and the pushing portion (400) is driven by the armature assembly (20) to move and drive the moving contact (34) and the stationary contact (41) to close or open.

19. A magnetic latching relay as claimed in claim 18, characterized in that: The armature assembly (20) and the contact portion (300) are respectively located on both sides of the coil winding (12) along the Y-axis direction; the two ends of the pushing portion (400) along the Y-axis direction are respectively connected to the armature assembly (20) and the movable contact member group (30); the contact portion (300) is also provided with a lead-out terminal, the lead-out terminal is fixedly connected to the base (200), and the signal terminal (14) and the lead-out terminal are separated from each other along the Y-axis direction.

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