Magnetic latching relay

Abstract

The present disclosure relates to the technical field of electronic control devices, and relates to a magnetic latching relay. The magnetic latching relay comprises a magnetic circuit structure. The magnetic circuit structure comprises a yoke iron assembly, a permanent magnet, and an armature, the permanent magnet is disposed between the armature and the yoke iron assembly, the permanent magnet and the armature being disposed in a split manner, and the permanent magnet and the yoke iron assembly being relatively fixed. The armature is provided with a window, and there is a distance greater than 0 between the window and the edge of the armature. A contact assembly is disposed at a side of the armature facing away from the yoke iron assembly, the contact assembly comprising a movable contact piece and a static contact piece, and the movable contact piece being able to contact or separate from the static contact piece. A push card is inserted into the window of the armature, and the armature contacts the movable contact piece by means of the push card, so as to drive the movable contact piece to contact or separate from the static contact piece. The magnetic latching relay can reduce the number of parts in the relay, shorten a processing cycle, improve assembly efficiency and reduce preparation costs, and can also reduce space occupied by the contact assembly in the relay, and improve the level of integration of structural parts in the relay, thereby facilitating relay miniaturization.

Description

Magnetic latching relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410902667.4, filed on July 5, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of electronic control devices, in particular to a magnetic latching relay. BACKGROUND

[0003] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied in an automatic control circuit. The relay is actually a kind of "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic regulation, safety protection, and conversion of circuits.

[0004] The existing relay adopts an injection molding process to integrally mold a permanent magnet and an armature to form an integrally molded magnetic circuit. The integrally molded magnetic circuit has a long processing cycle and high cost. When the overall injection molded relay wants to reduce the height of the moving spring part and the static spring part, new features need to be added to the armature part, which makes the process complex and the cost increases, or an additional part is needed, which cannot achieve the design concept of fewer parts, fewer processes, and lower cost. SUMMARY

[0005] The magnetic latching relay provided by the embodiments of the present disclosure can reduce the number of parts in the relay, shorten the processing cycle, improve the assembly efficiency, and reduce the preparation cost, and can reduce the space occupied by the contact assembly in the relay and improve the integration of the structural components in the relay, thereby facilitating the miniaturization of the relay.

[0006] The magnetic latching relay provided by the embodiments of the present disclosure can reduce the number of parts in the relay, shorten the processing cycle, improve the assembly efficiency, and reduce the preparation cost, and can reduce the space occupied by the contact assembly in the relay and improve the integration of the structural components in the relay, thereby facilitating the miniaturization of the relay.

[0007] The contact assembly is disposed on the side of the armature away from the yoke assembly along the first direction, and the contact assembly includes a moving contact piece and a static contact piece. The moving contact piece can contact or separate from the static contact piece.

[0008] A push card is inserted into the window of the armature, and the armature contacts the movable contact through the push card to drive the movable contact to contact or separate from the static contact.

[0009] According to some embodiments of the present disclosure, the push card has a first state and a second state relative to the armature, the push card is configured to penetrate from one side to the other side of the movable contact at least partially from the window in the first state; the push card is configured to have a rotation angle greater than 0° relative to the first state in the second state, and the push card is further configured to connect the armature to move in the first direction under the action of the armature in the second state.

[0010] According to some embodiments of the present disclosure, the rotation angle is 90 degrees.

[0011] According to some embodiments of the present disclosure, the push card is provided with a clamping recess; at least part of the armature is placed in the clamping recess in the second state; the clamping recess has a first pushing surface and a second pushing surface arranged opposite in the first direction, the first pushing surface is configured to push the armature towards a side surface of the contact assembly in the second state, and the second pushing surface is configured to push the armature away from a side surface of the contact assembly in the second state.

[0012] According to some embodiments of the present disclosure, the push card comprises a body part, a connecting part and a clamping part, the clamping part is connected to the body part through the connecting part, and the body part, the connecting part and the clamping part cooperate to form the clamping recess; at least part of the connecting part is used to be placed in the window, and the clamping part is used to penetrate the window in the first state.

[0013] According to some embodiments of the present disclosure, the push card is provided with two clamping recesses, and the two clamping recesses are symmetrically arranged about the connecting part in a third direction, the third direction being perpendicular to the first direction and the second direction.

[0014] According to some embodiments of the present disclosure, the armature is provided with a stop protrusion, the stop protrusion is placed on one side of the window in a third direction, and the stop protrusion is used to abut the push card in the second state, the third direction being perpendicular to the first direction and the second direction.

[0015] According to some embodiments of the present disclosure, the stop protrusion is located on the side of the armature towards the contact assembly, and the stop protrusion is used to abut the body part of the push card in the second state.

[0016] According to some embodiments of the present disclosure, the armature is provided with a recess structure on the other side of the stop protrusion along the first direction, and the recess structure is integrally punched with the stop protrusion.

[0017] According to some embodiments of the present disclosure, the movable contact is located on the side of the fixed contact facing the armature along the first direction; the push card is located on one side of the contact assembly along the second direction, and the body portion of the push card is provided with a clamping groove, and at least part of the movable contact is arranged in the clamping groove.

[0018] According to some embodiments of the present disclosure, an arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotationally arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contacted and matched with the yoke assembly.

[0019] According to some embodiments of the present disclosure, the clamping portion is provided with the first pushing surface and a first inclined surface on the side facing the armature, and the first inclined surface is located on the side of the first pushing surface close to the arc-shaped contact surface along the second direction.

[0020] The body portion is provided with the second pushing surface and a second inclined surface on the side facing the armature, and the second inclined surface is located on the side of the second pushing surface close to the arc-shaped contact surface along the second direction.

[0021] According to some embodiments of the present disclosure, at least one side of the connecting portion in the second direction has a gap between the inner wall of the window and the armature.

[0022] According to some embodiments of the present disclosure, a clamping plate assembly is further included, the clamping plate assembly includes two clamping plates, the two clamping plates clamp the armature and the permanent magnet in a third direction, and the two clamping plates limit the armature and the permanent magnet in the second direction; the third direction is perpendicular to the first direction and the second direction.

[0023] According to some embodiments of the present disclosure, a first positioning structure is arranged between the clamping plate and the permanent magnet, and the first positioning structure is used to limit the relative position of the permanent magnet in the second direction.

[0024] According to some embodiments of the present disclosure, the first positioning structure includes a first protruding portion arranged on the side of the clamping plate facing the other clamping plate, and the first protruding portion abuts the two sides of the permanent magnet in the second direction.

[0025] According to some embodiments of the present disclosure, a second positioning structure is arranged between the clamping plate and the armature, and is used to limit the relative position of the armature in the second direction.

[0026] According to some embodiments of the present disclosure, the second positioning structure comprises a groove arranged on one side of the clamping plate facing the other clamping plate, and a second protruding part arranged on the surface of the armature, the second protruding part is placed in the groove matched therewith, and the armature can rotate relative to the inner wall of the groove through the second protruding part.

[0027] According to some embodiments of the present disclosure, a third positioning structure is arranged between the clamping plate and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly through the third positioning structure.

[0028] According to some embodiments of the present disclosure, the third positioning structure comprises a protruding part and a recess part matched with each other, one of the protruding part and the recess part is arranged on the clamping plate, and the other is arranged on the yoke assembly.

[0029] According to some embodiments of the present disclosure, a base is further included, and the magnetic circuit structure is fixed to the base through the clamping plate assembly.

[0030] According to some embodiments of the present disclosure, an anti-disengagement structure is arranged between the clamping plate and the base.

[0031] According to some embodiments of the present disclosure, the anti-disengagement structure comprises a fixing groove arranged on the base and a protruding part arranged on the clamping plate, and the protruding part and the fixing groove are in interference fit.

[0032] According to some embodiments of the present disclosure, the anti-disengagement structure comprises a fixing groove arranged on the base and a protruding part arranged on the clamping plate, the fixing groove is a through groove, the protruding part extends from the fixing groove to the surface of one side of the permanent magnet opposite to the other side, and the part of the protruding part extending out of the fixing groove is provided with a barb, and the barb is engaged with the surface of the fixing groove away from the permanent magnet.

[0033] According to some embodiments of the present disclosure, the base comprises a seat body and a surrounding plate extending out of the seat body, the surrounding plate forms a surrounding space, and at least part of the magnetic circuit structure is arranged in the surrounding space.

[0034] According to some embodiments of the present disclosure, the surrounding plate is provided with a guide sliding groove extending in the second direction on each of the opposite sides in the third direction.

[0035] The clamping plate is provided with a guide protruding part on the side away from the other clamping plate, and the guide protruding part is placed in the guide sliding groove.

[0036] According to some embodiments of the present disclosure, the clamping plate is provided with a clamping protrusion protruding from the guide protrusion surface in the first direction and clamping the inner wall surface of the guide chute.

[0037] According to some embodiments of the present disclosure, the clamping plate is symmetrically arranged about the guide protrusion in the first direction.

[0038] According to some embodiments of the present disclosure, the seat body is provided with a placement cavity in which at least part of the contact assembly is placed, and a limiting groove is arranged between the seat body forming the placement cavity and the surrounding plate, the limiting groove extending in the second direction.

[0039] According to some embodiments of the present disclosure, the yoke assembly includes a first contact portion, a second contact portion and a third contact portion, the first contact portion and the second contact portion are arranged opposite to each other along the second direction, and the third contact portion is arranged between the first contact portion and the second contact portion; the first contact portion is used for contact matching with one end of the armature to form a first clapping surface, the second contact portion is used for contact matching with the other end of the armature to form a second clapping surface, and the second clapping surface is arranged coplanarly with the first clapping surface; and the permanent magnet is fixed to the third contact portion.

[0040] According to some embodiments of the present disclosure, the clamping portion is arranged between the first contact portion and the permanent magnet along the second direction; and there is a gap between the clamping portion and the third contact portion along the first direction.

[0041] One embodiment of the above invention has at least the following advantages or benefits:

[0042] 1. The magnetic latching relay provided by the present disclosure does not separately arrange other protruding structures on the armature, but only uses the window on the armature as the assembly and push-pull position of the push card, so that the push card can effectively connect the armature to form a whole. At the same time, the window has a distance greater than 0 with the edge of the armature in the second direction, and the structure arrangement makes the window arranged in the non-end region of the armature, which can reduce the size of the movable contact and the static contact in the second direction, reduce the space occupied by the contact assembly in the relay, improve the integration of the structural components in the relay, and then facilitate the miniaturization of the relay, and can achieve the purpose of reducing material consumption to reduce the preparation cost.

[0043] At the same time, the magnetic latching relay provided by the present disclosure can improve the stability of the driving process by the contact and disconnection operation of the movable contact and the static contact in the whole driving contact assembly formed by the connection of the armature and the push card, and can ensure the effective contact or disconnection of the movable contact and the static contact, thereby improving the structural performance of the magnetic latching relay.

[0044] Moreover, the magnetic latching relay provided by the present disclosure has a split structure of the armature and the permanent magnet, and does not need to be integrally insert-molded during preparation, so that the part is simple and easy to prepare, and the production efficiency and production quality of the part can be improved, and the preparation cost is reduced. Moreover, the armature and the permanent magnet can be assembled in an automatic assembly mode by using a single machine, so that the assembly difficulty is reduced and the assembly efficiency of the part is improved.

[0045] 2. The magnetic latching relay provided by the present disclosure has a window in the armature, which is used as a push card assembly and a push-pull position, so that at least part of the push card can pass through the window in the first state, and there is no scratching between the push card and the side wall of the window during the process. Moreover, the structure also allows the push card to effectively connect the armature to form a whole when switching to the second state.

[0046] 3. In the magnetic latching relay provided by the present disclosure, when the push card is switched from the first state to the second state, the armature is limited between the first push surface and the second push surface of the clamping recess in the first direction, so that the armature and the push card form a whole, and effectively drive the contact and disengagement operation of the moving contact and the static contact.

[0047] 4. In the magnetic latching relay provided by the present disclosure, the armature and the permanent magnet form a whole through the clamping plate assembly, so as to achieve integrated insertion of the magnetic circuit structure, and achieve the effects of extremely simple assembly process, simple part forming, low cost, etc.

[0048] At the same time, since the magnetic circuit structure is assembled with the base through the clamping plate assembly, the clamping plate assembly can reduce the risk of scratching as a transition piece connecting the magnetic circuit structure and the base. Moreover, during the assembly of the clamping plate assembly and the base, the clamping plate assembly made of plastic material contacts the base made of plastic material, which reduces the probability of scratching and the amount of scratching between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0049] FIG. 1 shows a plan view of the magnetic latching relay provided by the present disclosure;

[0050] FIG. 2 shows a cross-sectional view of A-A in FIG. 1;

[0051] FIG. 3 shows a perspective view of the magnetic latching relay in FIG. 1 without the shell;

[0052] FIG. 4 shows a plan view of the structure in FIG. 3;

[0053] FIG. 5 shows a perspective view of the push card in FIG. 3;

[0054] FIG. 6 shows a perspective view of the push card in FIG. 5 from another angle;

[0055] Fig. 7 is a plan view of the push card of Fig. 5;

[0056] Fig. 8 is a perspective view of the armature of Fig. 3;

[0057] Fig. 9 is a perspective view of the armature of Fig. 8 from another angle;

[0058] Fig. 10 is a perspective view of the push card of Fig. 5 and the armature of Fig. 8;

[0059] Fig. 11 is a perspective view of the structure from another angle;

[0060] Fig. 12 is a perspective view of a part of the structure of Fig. 4;

[0061] Fig. 13 is a perspective view of the clamp assembly of Fig. 12;

[0062] Fig. 14 is a plan view of the structure of Fig. 12 after the clamp assembly of Fig. 13 is assembled;

[0063] Fig. 15 is an enlarged view of B of Fig. 14;

[0064] Fig. 16 is a perspective view of the base of Fig. 3.

[0065] Reference signs are as follows: 100, magnetic circuit structure; 110, yoke assembly; 111, first contact portion; 112, second contact portion; 113, third contact portion; 114, protrusion; 120, permanent magnet; 130, armature; 131, window; 132, stop protrusion; 133, recessed structure; 134, protruding petal; 135, second protrusion; 140, clamp assembly; 141, clamp; 1411, first protrusion; 1412, pushing portion; 1413, groove; 1414, recess; 1415, protruding portion; 1416, barb; 1417, guide protrusion; 1418, engagement protrusion; 150, coil holder; 160, coil; 200, contact assembly; 210, movable contact; 220, stationary contact; 300, push card; 310, body portion; 311, engagement slot; 312, driving protrusion; 320, connecting portion; 330, engagement portion; 400, housing assembly; 410, base; 411, seat body; 4111, placement cavity; 4112, limiting slot; 412, enclosing plate; 4121, guide slide groove; 420, shell; A, engagement recess; M1, first pushing surface; M2, second pushing surface; N1, first inclined surface; N2, second inclined surface. DETAILED DESCRIPTION

[0066] Example implementations are now described with reference to the drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the views, and thus a detailed description of them will not be repeated.

[0067] The magnetic latching relay provided by the embodiments of the present disclosure includes a magnetic circuit structure 100, a contact assembly 200, and a push card 300. The magnetic circuit structure 100 includes a yoke assembly 110, a permanent magnet 120, and an armature 130. The armature 130 is arranged opposite to at least part of the yoke assembly 110 to form a first direction X. The permanent magnet 120 is arranged between the armature 130 and the yoke assembly 110 along the first direction X. The permanent magnet 120 is arranged separately from the armature 130 and is fixed opposite to the yoke assembly 110. The armature 130 is provided with a window 131. The window 131 has a spacing greater than 0 with respect to the edge of the armature 130 along a second direction Z perpendicular to the first direction X. The contact assembly 200 is arranged on the side of the armature 130 away from the yoke assembly 110 along the first direction X. The contact assembly 200 includes a movable contact 210 and a fixed contact 220. The movable contact 210 can contact or be separated from the fixed contact 220. The push card 300 is inserted into the window 131 of the armature 130. The armature 130 contacts the movable contact 210 through the push card 300 to drive the movable contact 210 to contact or be separated from the fixed contact 220.

[0068] It can be understood that the shape of the armature 130 is not limited to the flat plate structure shown in FIG. 8. The armature 130 can also be L-shaped or N-shaped, as long as the armature 130 is arranged opposite to at least part of the yoke assembly 110 to form the first direction X, so that the permanent magnet 120 is arranged between the armature 130 and the yoke assembly 110 along the first direction X.

[0069] As an example, when the magnetic latching relay provided by the embodiments of the present disclosure is applied, the movable contact 210 can be separated from the fixed contact 220 by driving the push card 300 to move in one branch direction X1 of the first direction X by the armature 130. Conversely, the movable contact 210 can be contacted by the fixed contact 220 by driving the push card 300 to move in the other opposite branch direction X2 of the first direction X by the armature 130.

[0070] It should be noted that the magnetic latching relay provided by the embodiment of the present disclosure does not separately provide other protruding structures on the armature 130, and only uses the window 131 on the armature 130 as the assembly and push-pull position of the push card 300, so that the push card 300 can effectively connect the armature 130 to form an integral whole. At the same time, the window 131 has a spacing greater than 0 with the edge of the armature 130 in the second direction Z. The structure is arranged such that the window 131 is arranged in the non-end region of the armature 130, which can reduce the size of the moving contact 210 and the static contact 220 in the second direction Z, reduce the space occupied by the contact assembly 200 in the relay, improve the integration of the structural components in the relay, thereby facilitating the miniaturization of the relay, and achieving the purpose of reducing material consumption to reduce the preparation cost.

[0071] At the same time, the magnetic latching relay provided by the embodiment of the present disclosure can improve the stability of the driving process by forming an integral driving contact assembly 200 by connecting the armature 130 and the push card 300, and can effectively ensure the moving contact 210 to contact or separate from the static contact 220, thereby improving the structural performance of the magnetic latching relay.

[0072] Moreover, in the magnetic latching relay provided by the embodiment of the present disclosure, the armature 130 and the permanent magnet 120 are of a split structure, and do not need to be integrally insert injection molded during preparation, so that the parts are simple and easy to manufacture, and the production efficiency and production quality of the parts can be improved, and the preparation cost can be reduced. Moreover, single machines can be used for automatic assembly when assembling the armature 130 and the permanent magnet 120, which reduces the assembly difficulty and improves the assembly efficiency of the parts.

[0073] It should be noted that if the second direction Z is defined as the vertical direction, the magnetic latching relay provided by the embodiment of the present disclosure can reduce the size of the static contact 220 and the moving contact 210 in the height direction, thereby achieving the purpose of low height and reducing material consumption.

[0074] In one embodiment, please continue to refer to the structure shown in FIGS. 5 to 11, the push card 300 has a first state and a second state relative to the armature 130, and the push card 300 is configured to at least partially penetrate from one side to the other side of the moving contact 210 through the window 131 in the first state. The push card 300 is configured to have a rotation angle greater than 0° relative to the first state in the second state, and the push card 300 is further configured to connect the armature 130 in the second state to move along the first direction X under the action of the armature 130.

[0075] In the assembly of the magnetic latching relay provided by the embodiments of the present disclosure, the push card 300 can be rotated to switch the push card 300 from the first state to the second state, and then the armature 130 is connected. After the push card 300 connects the armature 130, the push card 300 can move in the first direction X under the action of the armature 130, and then drive the movable contact 210 to contact or separate from the static contact 220.

[0076] It should be noted that the magnetic latching relay provided by the embodiments of the present disclosure sets the window 131 on the armature 130 as the assembly and push-pull position of the push card 300, so that at least part of the push card 300 can pass through the window 131 in the first state, and in the process, there is no scratching between the push card 300 and the side wall of the window 131. Moreover, this structure also allows the push card 300 to effectively connect the armature 130 to form a whole when switching to the second state.

[0077] It should be noted that the relay in the related art adopts a protruding structure on the swing arm of the armature 130 and is assembled into the push card 300 by interference fit. This interference fit method can cause the problem of scratching. The magnetic latching relay provided by the embodiments of the present disclosure sets the push card 300 to rotate relative to the armature 130 to switch from the first state to the second state, and there is no hard interference fit between the push card 300 and the armature 130 during the assembly process. This can avoid scratching between the push card 300 and the armature 130 during assembly, thereby reducing the amount of scratching between them and the amount of foreign matter generated during assembly, and improving product quality.

[0078] In the embodiments, the angle of the rotation angle can be set according to requirements. In order to improve the stability of the push card 300 in the second state and avoid the push card 300 from being mistakenly touched from the second state to the first state, in a preferred embodiment, the rotation angle is 90 degrees.

[0079] In an embodiment, the push card 300 is provided with a clamping recess A, and at least part of the armature 130 is arranged in the clamping recess A in the second state. The clamping recess A has a first pushing surface M1 and a second pushing surface M2 arranged opposite in the first direction X. The first pushing surface M1 is configured to push the side surface of the armature 130 towards the contact assembly 200 in the second state, and the second pushing surface M2 is configured to push the side surface of the armature 130 away from the contact assembly 200 in the second state.

[0080] It is to be noted that when the push card 300 is switched from the first state to the second state, the armature 130 is confined between the first pushing surface M1 and the second pushing surface M2 of the engaging recess A along the first direction X, so that the armature 130 and the push card 300 form an integral whole, effectively driving the contact and disengagement operation of the movable contact piece 210 and the stationary contact piece 220.

[0081] In one specific embodiment, please continue to refer to the structure shown in Figs. 8-11 in combination with Figs. 5-7, the push card 300 comprises a body portion 310, a connecting portion 320, and an engaging portion 330, the engaging portion 330 is connected to the body portion 310 through the connecting portion 320, and the body portion 310, the connecting portion 320, and the engaging portion 330 cooperatively form the engaging recess A; at least part of the connecting portion 320 is arranged in the window 131, and the engaging portion 330 is arranged to penetrate the window 131 in the first state.

[0082] It is to be noted that when the size of the engaging portion 330 is set, the engaging portion 330 should meet the requirements of penetrating the window 131 in the first state and engaging the surface of the armature 130 away from the contact assembly 200 in the second state.

[0083] In one embodiment, please continue to refer to the structure shown in Figs. 5-7, the push card 300 is provided with two engaging recesses A, and the two engaging recesses A are symmetrically arranged about the connecting portion 320 along a third direction Y, which is perpendicular to the first direction X and the second direction Z.

[0084] It is to be noted that the symmetrical structure arrangement makes the push card 300 have the first pushing surface M1 and the second pushing surface M2 on both sides along the third direction Y. Specifically, when the armature 130 drives the push card 300 to move, the first pushing surface M1 or the second pushing surface M2 on both sides of the connecting portion 320 can stably play a role, so as to improve the stability of the connection between the armature 130 and the push card 300, and further improve the contact and disengagement effect of the movable contact piece 210 and the stationary contact piece 220.

[0085] In one embodiment, please refer to the structure shown in Fig. 11 in combination with Fig. 9, the armature 130 is provided with a stop protrusion 132, and the stop protrusion 132 is arranged on one side of the window 131 along the third direction Y, and the stop protrusion 132 is used to abut against the push card 300 in the second state, and the third direction Y is perpendicular to the first direction X and the second direction Z.

[0086] It is to be noted that along the second direction Z, the stop protrusion 132 is used to abut against one side of the push card 300, so as to prevent the push card 300 from moving along the second direction Z, thereby improving the stability of the connection relationship between the two.

[0087] It is worth noting that, if the second direction Z represents the vertical direction, the stop protrusion 132 can be provided only at the bottom of the push card 300 to avoid the push card 300 from falling under the influence of gravity, affecting the state of the push card 300 after being connected with the armature 130, causing the push card 300 to displace in the second direction Z, affecting the contact and disengagement operation between the movable contact piece 210 and the static contact piece 220.

[0088] When arranging the position of the stop protrusion 132, the stop protrusion 132 can abut the engaging portion 330, the connecting portion 320 or the body portion 310 of the push card 300. In a preferred embodiment, the stop protrusion 132 is located on the side of the armature 130 facing the contact assembly 200, and the stop protrusion 132 is used to abut the body portion 310 of the push card 300 in the second state.

[0089] It should be noted that when the stop protrusion 132 is used to abut the body portion 310, the stop protrusion 132 is located at or near the middle position of the push card 300 in the first direction X, which can improve the stop effect and improve the stability of the armature 130 and the push card 300 after assembly.

[0090] Moreover, since the size of the body portion 310 is large, the structural strength is increased, which can avoid the body portion 310 from being broken or bent due to the stop protrusion 132, and can improve the service life.

[0091] In an embodiment, the armature 130 is provided with a recess structure 133 on the other side corresponding to the stop protrusion 132 in the first direction X, and the recess structure 133 is integrally stamped with the stop protrusion 132.

[0092] It should be noted that the forming method of integral stamping is simpler, which can reduce the preparation difficulty, reduce the preparation cost and improve the preparation efficiency.

[0093] In an embodiment, please refer to the structure shown in FIG. 12 in combination with FIGS. 5 and 6, the movable contact piece 210 is located on the side of the static contact piece 220 facing the armature 130 in the first direction X; the push card 300 is located on the side of the contact assembly 200 in the second direction Z, and the body portion 310 of the push card 300 is provided with a clamping groove 311, and at least part of the movable contact piece 210 is placed in the clamping groove 311; so as to drive the movable contact piece 210 to move in the direction X1 or the direction X2 by the push card 300.

[0094] Further, a driving protrusion 312 can be arranged on the side of the body 310 facing the contact assembly 200, and the driving protrusion 312 is arranged on the side of the engaging groove 311 along the first direction X, so as to improve the driving effect of the card 300 on the movable contact 210. Preferably, the driving protrusion 312 is arranged between the engaging groove 311 and the armature 130, so as to avoid the contact position of the movable contact 210 and the static contact 220.

[0095] It is worth noting that the assembly form of the yoke assembly 110, the armature 130 and the permanent magnet 120 in the embodiment of the present disclosure can be various, at least one of the following forms.

[0096] In one embodiment, please continue to refer to the structure shown in FIG. 12, an arc-shaped contact surface is arranged between the armature 130 and the permanent magnet 120, the armature 130 contacts one side magnetic pole of the permanent magnet 120 through the arc-shaped contact surface, and the armature 130 is rotatably arranged relative to the permanent magnet 120 through the arc-shaped contact surface, so that the two ends of the armature 130 are alternately contacted and matched with the yoke assembly 110.

[0097] It is to be noted that the embodiment of the present disclosure only includes one armature 130, and the armature 130 is generally a flat plate structure, which is not only light and convenient, but also can save parts and reduce cost.

[0098] Of course, a plurality of armatures 130 can also be arranged according to requirements, and the plurality of armatures 130 are arranged horizontally along the third direction Y under the premise of maintaining the consistency of the action, which will not be described in detail.

[0099] It is worth noting that when the arc-shaped contact surface is arranged between the armature 130 and the permanent magnet 120, the form of the arc-shaped contact surface can be various. For example, the armature 130 is provided with a convex calyx 134 on the side facing the permanent magnet 120, the convex calyx 134 forms an arc-shaped contact surface, and the armature 130 contacts the permanent magnet 120 through the arc-shaped contact surface; or the permanent magnet 120 is provided with a convex calyx on the side facing the armature 130, the convex calyx forms an arc-shaped contact surface, and the armature 130 contacts the permanent magnet 120 through the arc-shaped contact surface.

[0100] When the convex calyx 134 is arranged on the armature 130, the convex calyx 134 and the armature 130 can be an integral structure, so as to improve the stability of the rotation of the armature 130. Of course, the armature 130 and the convex calyx 134 can also be arranged in a split structure according to requirements, which will not be described in detail here.

[0101] Similarly, the convex calyx and the permanent magnet 120 can be arranged in the form between the convex calyx 134 and the armature 130, which will not be described in detail here.

[0102] In one embodiment, as shown in FIGS. 5 and 6, the engaging portion 330 is provided with a first pushing surface M1 and a first inclined surface N1 on the side facing the armature 130, and the first inclined surface N1 is located on the side of the first pushing surface M1 close to the arc-shaped contact surface along the second direction Z; the body portion 310 is provided with a second pushing surface M2 and a second inclined surface N2 on the side facing the armature 130, and the second inclined surface N2 is located on the side of the second pushing surface M2 close to the arc-shaped contact surface along the second direction Z.

[0103] It should be noted that the first inclined surface N1 and the second inclined surface N2 can prevent the armature 130 from being stuck relative to the connecting portion 320 of the pusher 300 during oscillation, so that the armature 130 can function normally.

[0104] In one embodiment, the connecting portion 320 has a gap between at least one side in the second direction Z and the inner wall of the window 131 formed by the armature 130, so as to prevent the armature 130 from being stuck relative to the connecting portion 320 of the pusher 300 during oscillation, so that the armature 130 can function normally.

[0105] In one embodiment, as shown in FIGS. 12 and 13, the magnetic latching relay provided by the embodiment of the present disclosure further comprises a clamping plate assembly 140, the clamping plate assembly 140 comprises two clamping plates 141, the two clamping plates 141 clamp the armature 130 and the permanent magnet 120 in a third direction Y, and the two clamping plates 141 limit the armature 130 and the permanent magnet 120 in a second direction Z; the third direction Y is perpendicular to the first direction X and the second direction Z.

[0106] It should be noted that the armature 130 and the permanent magnet 120 in the embodiment of the present disclosure form a whole through the clamping plate assembly 140, so as to realize integrated insertion of the magnetic circuit structure 100, achieve extremely simple assembly process, simple part forming, low cost and the like.

[0107] At the same time, since the magnetic circuit structure 100 is assembled with the base 410 through the clamping plate assembly 140, the clamping plate assembly 140 serves as a transition piece connecting the magnetic circuit structure 100 and the base 410, which can reduce the risk of scratching. Moreover, during the assembly of the clamping plate assembly 140 and the base 410, the clamping plate assembly 140 made of plastic material contacts the base 410 made of plastic material, which reduces the probability of occurrence of scratching and the amount of scratching between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving the product quality.

[0108] It can be understood that the permanent magnet 120 and the armature 130 can be in direct contact, or a magnetic conducting piece can be arranged and indirectly contact through the magnetic conducting piece. Similarly, the permanent magnet 120 and the yoke assembly 110 can be in direct contact, or a magnetic conducting piece can be arranged and indirectly contact through the magnetic conducting piece.

[0109] It is worth noting that other fixing structures can be provided between the permanent magnet 120 and the yoke assembly 110, or the yoke assembly 110 can be attracted to the permanent magnet 120 by magnetization of the permanent magnet 120. For example, the permanent magnet 120 can be magnetized during assembly to ensure that the relative position of the permanent magnet 120 and the yoke assembly 110 meets the requirements, and then the assembly of other structural components is completed.

[0110] In one embodiment, a first positioning structure is provided between the clamping plate 141 and the permanent magnet 120, and the first positioning structure is used to limit the relative position of the permanent magnet 120 in the second direction Z, so as to ensure that the permanent magnet 120 is assembled to a predetermined position and avoid the permanent magnet 120 from moving in the second direction Z during use, thereby improving the structural performance of the relay.

[0111] In one specific embodiment, the first positioning structure can be provided only on the surface of the clamping plate 141. For example, as shown in FIGS. 12 and 14, the first positioning structure includes a first protruding portion 1411 provided on the side of the clamping plate 141 facing the other clamping plate 141, and the first protruding portion 1411 abuts both sides of the permanent magnet 120 in the second direction Z to limit the relative position of the permanent magnet 120 in the second direction Z.

[0112] Specifically, in the present embodiment, two first protruding portions 1411 are provided on the surface of each clamping plate 141, and the two first protruding portions 1411 are oppositely arranged in the second direction Z to limit the relative arrangement of the permanent magnet 120 in the second direction Z.

[0113] As shown in FIGS. 12 to 14, in the present example, the first protruding portions 1411 at corresponding positions on the two clamping plates 141 cooperate with each other to improve the limiting effect on the permanent magnet 120. If the second direction Z in the embodiment of the present disclosure is the vertical direction, and the side of each structural component close to the base 410 is defined as the bottom. Then, the first protruding portion 1411 on one clamping plate 141 and the first protruding portion 1411 on the other clamping plate 141 jointly limit the bottom of the permanent magnet 120, and at the same time, the first protruding portion 1411 on one clamping plate 141 and the first protruding portion 1411 on the other clamping plate 141 jointly limit the top of the permanent magnet 120.

[0114] It should be noted that during assembly of the clamping plate assembly 140 and the permanent magnet 120, the two clamping plates 141 can be directly placed on both sides of the permanent magnet 120 for assembly operation, which can reduce the assembly difficulty and improve the assembly efficiency.

[0115] Of course, the first protruding portion 1411 can also be provided only on the clamping plate 141 located on one side of the permanent magnet 120, and the details are not described herein.

[0116] Alternatively, in another embodiment, the first positioning structure can be partially provided on the surface of the permanent magnet 120 and partially provided on the surface of the clamping plate 141. Specifically, the first positioning structure comprises a concave portion and a convex portion which are matched with each other, and one of the convex portion and the concave portion is provided on the permanent magnet 120 and the other is provided on the clamping plate 141.

[0117] For example, the permanent magnet 120 is provided with a convex portion which is inserted into a concave portion of the clamping plate 141 to limit the relative position of the permanent magnet 120 in the second direction Z. Alternatively, the clamping plate 141 is provided with a convex portion which is inserted into a concave portion of the permanent magnet 120 to limit the relative position of the permanent magnet 120 in the second direction Z.

[0118] In order to facilitate the assembly of the permanent magnet 120 into the limiting space formed by the first protruding portion 1411, a guide inclined surface (not shown) can be provided on the first protruding portion 1411 as shown in FIG. 13 to facilitate the insertion of the permanent magnet 120 and avoid the sharp corner of the first protruding portion 1411 scratching the permanent magnet 120 and affecting the performance of the permanent magnet 120.

[0119] Please continue to refer to the structure shown in FIG. 13. In order to improve the clamping effect of the clamping plate assembly 140 on the permanent magnet 120 in the third direction Y, in one embodiment, the clamping plate 141 is provided with a pushing portion 1412 on the side facing the other clamping plate 141 to push the side surface of the permanent magnet 120 in the third direction Y.

[0120] It is worth noting that the pushing portion 1412 is arranged between and connected to the two first protruding portions 1411 of the same clamping plate 141 as shown in FIG. 13 to improve the structural strength of the clamping plate 141.

[0121] Please refer to the structures shown in FIGS. 12 and 14 in combination with FIG. 13. Since the two clamping plates 141 are located on both sides of the armature 130 in the third direction Y, the clamping plate assembly 140 can limit the maximum displacement of the armature 130 in the third direction Y. When the armature 130 and the permanent magnet 120 are separately arranged, the armature 130 is attracted by the permanent magnet 120 and will not fall off, and the permanent magnet 120 does not need to be pressed and limited in the first direction X by the armature 130. However, during the assembly process, the assembly operation of the armature 130 can be earlier than the magnetizing operation of the permanent magnet 120. Therefore, in one embodiment, a second positioning structure is provided between the clamping plate 141 and the armature 130, and the second positioning structure is used to limit the relative position of the armature 130 in the second direction Z.

[0122] It should be noted that this structure allows the armature 130 to be effectively positioned by the clamping plate assembly 140, and the assembly sequence of the armature 130 can be earlier than the magnetizing step of the permanent magnet 120, so that the position of the permanent magnet 120 can be adjusted according to the needs before magnetizing, thereby reducing the assembly difficulty and improving the assembly efficiency.

[0123] It is worth noting that there are many possibilities for the structure of the second positioning structure in the embodiments of the present disclosure.

[0124] In a specific embodiment, please refer to the structure shown in FIG. 12 and FIG. 14 in combination with FIG. 13, the second positioning structure includes a groove 1413 provided on one side of the clamping plate 141 facing the other clamping plate 141 and a second protruding part 135 provided on the surface of the armature 130, the second protruding part 135 is placed in the groove 1413 matched with it, and the armature 130 can rotate relative to the inner wall of the groove 1413 through the second protruding part 135.

[0125] It should be noted that in this specific embodiment, the second protruding part 135 on the surface of the armature 130 is placed in the groove 1413 on the clamping plate 141 matched with the second protruding part 135, and the groove 1413 can limit the second protruding part 135 in the first direction X and the second direction Z, thereby limiting the relative position of the armature 130 in the first direction X and the second direction Z.

[0126] It is worth noting that, as shown in FIG. 15, along the first direction X and the second direction Z, the second protruding part 135 and the inner wall of the groove 1413 both have gaps to ensure the rotation effect of the second protruding part 135 and avoid jamming.

[0127] In order to further optimize the rotation effect of the second protruding part 135 relative to the groove 1413 and avoid jamming, as an example, please refer to the structure shown in FIG. 15 in combination with FIG. 14, the inner wall of the groove 1413 formed by the clamping plate 141 includes first, second, third and fourth extension segments P1, P2, P3 and P4 connected in sequence, wherein the first and third extension segments P1 and P3 are oppositely arranged in the second direction Z, the second and fourth extension segments P2 and P4 are oppositely arranged in the first direction X, the second, third and fourth extension segments P2, P3 and P4 are straight segments, the fourth extension segment P4 is located on the side of the second extension segment P2 away from the permanent magnet 120, and the fourth extension segment P4 is a curved segment protruding away from the permanent magnet 120. The second protruding part 135 of the armature 130 includes first, second, third and fourth surfaces Q1, Q2, Q3 and Q4, the first and third surfaces Q1 and Q3 are oppositely arranged in the second direction Z, the second and fourth surfaces Q2 and Q4 are oppositely arranged in the first direction X, the fourth surface Q4 is located on the side of the armature 130 away from the permanent magnet 120, and the first surface Q1 and the fourth surface Q4 have an inclined surface Q5 therebetween, and the third surface Q3 and the fourth surface Q4 have an inclined surface Q6 therebetween.

[0128] It is worth noting that during the rotation of the armature 130, the inclined surfaces Q5 and Q6 are used to prevent rotation jamming.

[0129] Of course, a groove structure can also be provided on the armature 130 according to requirements, and a protrusion structure can be provided on the clamping plate 141, which will not be described in detail.

[0130] In one embodiment, the groove 1413 penetrates through the clamping plate 141 on opposite sides in the third direction Y, i.e., the groove 1413 is a through groove. At this time, the second protrusion part 135 does not protrude beyond the side surface of the clamping plate 141 away from the other clamping plate 141, so as to reduce the assembly difficulty and avoid the second protrusion part 135 from scratching the base 410, which can further reduce the risk of scratching and reduce the assembly difficulty.

[0131] Of course, the groove 1413 can also be provided with an opening only on the side of the clamping plate 141 facing the armature 130, which will not be described in detail.

[0132] In one embodiment, please refer to the structure shown in FIG. 12 and FIG. 14 in combination with FIG. 13, the third positioning structure is provided between the clamping plate 141 and the yoke assembly 110, and the yoke assembly 110 is fixed to the clamping plate assembly 140 through the third positioning structure.

[0133] It should be noted that the yoke assembly 110, the permanent magnet 120 and the armature 130 are integrated through the clamping plate assembly 140 in the embodiments of the present disclosure, which can further improve the integration of the structural parts in the magnetic circuit structure 100, reduce the assembly difficulty of the magnetic circuit structure 100 and the base 410, and improve the assembly efficiency.

[0134] It is worth noting that since the yoke assembly 110 is also fixed by the clamping plate assembly 140 in the embodiments, when assembling the magnetic latching relay provided in the embodiments of the present disclosure, the components can be assembled first, and then the permanent magnet 120 is magnetized and adsorbed on the surface of the yoke assembly 110. At the same time, the armature 130 is attracted by the permanent magnet 120 and will not fall off. Accordingly, when the armature 130 and the permanent magnet 120 are separately arranged, the permanent magnet 120 does not need to be pressed and limited by the armature 130 in the first direction X.

[0135] In one embodiment, the third positioning structure includes a protrusion part 114 and a recess part 1414 which are matched with each other, one of the protrusion part 114 and the recess part 1414 is arranged on the clamping plate 141, and the other is arranged on the yoke assembly 110. For example, as shown in FIG. 12 to FIG. 14, the surface of the clamping plate 141 is provided with the recess part 1414, and the surface of the yoke assembly 110 is provided with the protrusion part 114, and the protrusion part 114 is arranged in the corresponding recess part 1414.

[0136] It is worth noting that the surface of the clamping plate 141 can be provided with one or more recesses 1414, and correspondingly, the surface of the yoke assembly 110 can be provided with one or more corresponding protrusions 114 to improve the relative stability of the yoke assembly 110 and the clamping plate assembly 140 after assembly. Even, the number of recesses 1414 on the surface of the clamping plate 141 can be greater than the number of protrusions 114 on the surface of the yoke assembly 110 to broaden the application scenarios, which will not be described in detail.

[0137] Please continue to refer to the structures shown in FIGS. 12-14. In one specific embodiment, the recess 1414 can extend through the clamping plate 141 in the third direction Y, so that the protrusion 114 is effectively inserted into the recess 1414, thereby improving the relative stability of the yoke assembly 110 and the clamping plate assembly 140 after assembly.

[0138] At the same time, when the recess 1414 extends through the clamping plate 141 in the third direction Y, it can be observed in time whether the protrusion 114 is assembled in place to reduce the assembly difficulty and improve the assembly efficiency.

[0139] In one embodiment, the magnetic latching relay provided by the embodiments of the present disclosure further includes a base 410, and the magnetic circuit structure 100 is fixed to the base 410 through the clamping plate assembly 140.

[0140] It should be noted that since the magnetic circuit structure 100 is assembled with the base 410 through the clamping plate assembly 140, the clamping plate assembly 140 acts as a transition piece connecting the magnetic circuit structure 100 and the base 410, which can reduce the risk of scratching. Moreover, during the assembly of the clamping plate assembly 140 and the base 410, the clamping plate assembly 140 made of plastic material contacts the base 410 made of plastic material, which reduces the probability of occurrence of scratching and the amount of scratching between the two, thereby reducing the amount of foreign matter generated during assembly and improving product quality.

[0141] To solve the problem that the assembled magnetic circuit structure 100 is prone to move along the second direction Z, causing the product pin to become shorter, in one embodiment, an anti-disengagement structure is provided between the clamping plate 141 and the base 410 to prevent the magnetic circuit structure 100 from disengaging from the base 410.

[0142] In one specific embodiment, the anti-disengagement structure includes a fixed groove provided on the base 410 and a protruding portion provided on the clamping plate 141, and the protruding portion and the fixed groove are in interference fit.

[0143] It should be noted that the magnetic circuit structure 100 is fixed between the clamping plate 141 and the base 410 by setting the protruding portion and the fixed groove in interference fit, which can improve the stability of the clamping plate assembly 140 after assembly relative to the base 410 and prevent the magnetic circuit structure 100 from disengaging from the base 410.

[0144] Moreover, since the magnetic circuit structure 100 realizes the fixing operation of the clamping plate 141 and the base 410 through the protruding portion and the fixed groove, the interference fit between the clamping plate 141 and the surrounding plate 412 of the base 410 can be avoided, and the possibility of scratching between the clamping plate 141 and the surrounding plate 412 of the base 410 can be reduced. Meanwhile, during the assembly of the clamping plate assembly 140 and the base 410, the clamping plate assembly 140 made of plastic material contacts the base 410 made of plastic material, the probability of the occurrence of the scratching phenomenon can be reduced, the amount of scratching between the clamping plate assembly 140 and the base 410 can be reduced, the amount of foreign matter generated during the assembly can be reduced, and the product quality can be improved.

[0145] In another specific embodiment, please refer to the structure shown in FIG. 16 in combination with FIG. 13, the anti-disengagement structure includes the fixed groove provided on the base 410 and the protruding portion 1415 provided on the clamping plate 141. The fixed groove is a through groove, the protruding portion 1415 extends from the fixed groove to the surface of the permanent magnet 120 side and extends to the opposite side, and the part of the protruding portion 1415 extending out of the fixed groove is provided with a barb 1416, and the barb 1416 is engaged with the surface of the fixed groove away from the permanent magnet 120.

[0146] During assembly, the protruding portion 1415 with the barb 1416 can be inserted into the fixed groove. After the barb 1416 extends out of the surface of the fixed groove on the other side, the barb 1416 can be engaged with the surface of the fixed groove away from the permanent magnet 120, so as to further improve the engagement strength between the clamping plate 141 and the base 410, and avoid the protruding portion 1415 from disengaging from the fixed groove.

[0147] It is worth noting that in order to facilitate the barb 1416 to pass through the fixed groove during assembly, the inner wall of the fixed groove can be provided with a first guide slope, and the barb 1416 is provided with a corresponding second guide slope towards the position of the first guide slope, so as to reduce the amount of scratching between the first guide slope and the second guide slope, thereby reducing the amount of foreign matter generated during the assembly, improving the product quality.

[0148] In one embodiment, please refer to the structure shown in FIG. 14 in combination with FIG. 16, the base 410 includes a seat body 411 and a surrounding plate 412 extending from the seat body 411, the surrounding plate 412 forms a surrounding space, and at least part of the magnetic circuit structure 100 is located in the surrounding space.

[0149] It should be noted that in the embodiments of the present disclosure, the magnetic circuit structure 100 forms a whole through the clamping plate assembly 140. When the magnetic circuit structure 100 is assembled in the surrounding space, the magnetic circuit structure 100 and the surrounding plate 412 do not need to be interference fit, the probability of the occurrence of the scratching phenomenon can be reduced, the amount of scratching between the magnetic circuit structure 100 and the surrounding plate 412 can be reduced, the amount of foreign matter generated during the assembly can be reduced, and the product quality can be improved.

[0150] In one embodiment, please refer to the structure shown in FIG. 14 in combination with FIGS. 13 and 16, the containment plate 412 is provided with a guide chute 4121 extending along the second direction Z on both sides of the containment plate 412 in the third direction Y; the clamping plate 141 is provided with a guide protrusion 1417 on the side away from the other clamping plate 141, and the guide protrusion 1417 is placed in the guide chute 4121 to ensure that the magnetic circuit structure 100 is assembled in place and the assembly difficulty is reduced.

[0151] Specifically, since the clamping plate 141 is designed in a symmetrical manner, the clamping plate 141 can be assembled on one side or the opposite side of the permanent magnet 120 along the third direction Y, which can reduce the assembly difficulty and improve the assembly efficiency.

[0152] In order to prevent the magnetic circuit structure 100 from shaking during assembly, in one embodiment, please continue to refer to the structure shown in FIG. 14 in combination with FIGS. 13 and 16, the clamping plate 141 is provided with a clamping protrusion 1418 which protrudes from the surface of the guide protrusion 1417 in the first direction X and is clamped to the inner wall surface of the guide chute 4121.

[0153] In one embodiment, the clamping plate 141 is symmetrically arranged about the guide protrusion 1417 in the first direction X. Specifically, as shown in FIG. 13, the first protruding part 1411, the pushing part 1412, the groove 1413, the recess 1414, the protruding part 1415 and the barb 1416 and other structures are symmetrically arranged on both sides of the guide protrusion 1417 to facilitate the use of the clamping plate 141 during assembly.

[0154] Please continue to refer to the structure shown in FIGS. 12 and 14, the magnetic circuit structure 100 provided by the embodiment of the present disclosure further comprises a coil holder 150 and a coil 160 wound on the surface of the coil holder 150.

[0155] In order to prevent the shell assembly 400 from deviating and tilting during assembly, causing the coil 160 to collide with the shell assembly 400 and break. In one embodiment, please refer to the structure shown in FIG. 3 in combination with FIG. 16, the seat body 411 is provided with a placement cavity 4111, at least part of the contact assembly 200 is placed in the placement cavity 4111, and a limiting groove 4112 is provided between the seat body 411 forming the placement cavity 4111 and the containment plate 412, the limiting groove 4112 extends in the second direction Z, which ensures that the shell assembly 400 will not cause the coil 160 to break during assembly, reducing the process quality risk.

[0156] As shown in FIGS. 1 and 2, it can be understood that the shell assembly 400 comprises a base 410 and a shell 420, and the magnetic circuit structure 100 is placed in the space formed by the shell 420 and the base 410.

[0157] In one embodiment, the yoke assembly 110 includes a first contact portion 111, a second contact portion 112, and a third contact portion 113, the first contact portion 111 is disposed opposite to the second contact portion 112 along the second direction Z, and the third contact portion 113 is disposed between the first contact portion 111 and the second contact portion 112; the first contact portion 111 is configured to contact and cooperate with one end of the armature 130 to form a first contact surface, the second contact portion 112 is configured to contact and cooperate with the other end of the armature 130 to form a second contact surface, and the second contact surface is disposed coplanarly with the first contact surface; and the permanent magnet 120 is fixed to the third contact portion 113. It can be understood that in the specific embodiment, the first contact portion 111, the second contact portion 112, and the third contact portion 113 can be understood as three yoke irons.

[0158] It is worth noting that, as shown in FIG. 12, the first contact portion 111 and the second contact portion 112 extend beyond the third contact portion 113 along the first direction X, and the first contact portion 111 and the second contact portion 112 have a gap along the second direction Z, so as to facilitate the fixation of the permanent magnet 120 on the surface of the third contact portion 113.

[0159] It should be noted that, in the design scheme of the three yoke irons and the armature 130, one permanent magnet 120 is exposed, and the positioning and limiting of the permanent magnet 120 are achieved by the cooperation of the two side clamping plates 141 and the yoke irons. Among them, the support surface of the rotation of the armature 130 is the surface of the permanent magnet 120, and the first contact surface and the second contact surface cooperate to complete the entire magnetic circuit lapping. Accordingly, the use of the clamping plate 141 can not only better position and limit the permanent magnet 120, but also avoid generating scrapes with the base 410 during the assembly of the magnetic circuit.

[0160] The first contact portion 111 and the second contact portion 112 are located on opposite sides of the coil 160 along the second direction Z and are fixed in position relative to the coil 160. It can be understood that "the first contact portion 111 and the second contact portion 112 are fixed in position relative to the coil 160" means that after the first contact portion 111 and the second contact portion 112 are assembled relative to the coil 160, the probability of relative movement is very small. For example, taking the first contact portion 111 as an example, the first contact portion 111 and the coil 160 can be directly fixed and connected (such as riveting) through certain structural members to achieve position fixation; or the first contact portion 111 and the coil 160 can be positionally fixed through certain structural members in a plug-in or lapping manner. Of course, other limiting structures can also be provided between the first contact portion 111 and the coil 160 to achieve position fixation, and details are not described herein.

[0161] When the coil 160 is energized, the armature 130 swings under the joint action of the permanent magnet 120 and the yoke assembly 110, and one end of the armature 130 contacts the first contact portion 111. When the coil 160 is de-energized, the armature 130 swings reversely, and the other end of the armature 130 contacts the second contact portion 112.

[0162] For example, the yoke assembly 110 includes the core, and the core and the first contact portion 111 can be in an integrated structure or in a segmented structure. For example, when the core and the first contact portion 111 are in a segmented structure, the core can pass through the coil holder 150, and then the first contact portion 111 is riveted to the side end of the core. Then, the armature 130, the permanent magnet 120, and the yoke assembly 110 including the contact portions and the core can be assembled by the clamping plate assembly 140 to form an integrated whole.

[0163] For example, the yoke assembly 110 does not include the core, and the yoke assembly 110 only includes the contact portions. The armature 130, the permanent magnet 120, and the contact portions can be assembled to form an integrated whole, and then the core is assembled.

[0164] In one embodiment, along the second direction Z, the engaging portion 330 is disposed between the first contact portion 111 and the permanent magnet 120, and along the first direction X, the engaging portion 330 has a gap with the third contact portion 113.

[0165] It should be noted that the structure in the embodiment utilizes the gap between the armature 130 and the yoke assembly 110 to meet the push-pull displacement of the push-pull rod 300, which can improve the space utilization of the relay and meet the miniaturization design requirement of the relay.

[0166] Finally, it should be noted that the various embodiments provided by the disclosure can be combined with each other without contradiction, and will not be repeated here.

[0167] In the embodiments of the disclosure, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connecting" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments of the disclosure can be understood according to the specific circumstances.

[0168] In the description of the application embodiments, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the application embodiments.

[0169] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0170] The above is only the preferred embodiment of the application, and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A magnetic latching relay, characterized by, The application relates to a magnetic circuit structure, which comprises a yoke assembly, a permanent magnet and an armature, the armature being arranged opposite to at least part of the yoke assembly to form a first direction; the permanent magnet is arranged between the armature and the yoke assembly along the first direction, and the permanent magnet and the armature are arranged in a split mode, and the permanent magnet is fixed opposite to the yoke assembly; the armature is provided with a window, and the window has a spacing greater than 0 with the edge of the armature in a second direction, and the second direction is perpendicular to the first direction; a contact assembly is arranged on the side of the armature away from the yoke assembly along the first direction, and the contact assembly comprises a movable contact and a fixed contact, and the movable contact can contact or separate from the fixed contact; a push card is inserted into the window of the armature, and the armature contacts the movable contact through the push card to drive the movable contact to contact or separate from the fixed contact. The push card has a first state and a second state relative to the armature, and the push card is configured to penetrate from one side to the other side of the window at least partially in the first state; the push card is configured to have a rotation angle greater than 0 degrees relative to the first state in the second state, and the push card is also configured to connect the armature to move along the first direction under the action of the armature in the second state. The rotation angle is 90 degrees. The push card is provided with a clamping recess; in the second state, at least part of the armature is arranged in the clamping recess; the clamping recess has a first pushing surface and a second pushing surface arranged opposite in the first direction, the first pushing surface is configured to push the side surface of the armature towards the contact assembly in the second state, and the second pushing surface is configured to push the side surface of the armature away from the contact assembly in the second state. The push card comprises a body part, a connecting part and a clamping part, the clamping part is connected to the body part through the connecting part, and the body part, the connecting part and the clamping part cooperate to form the clamping recess; at least part of the connecting part is used to be arranged in the window, and the clamping part is used to penetrate the window in the first state.

2. The magnetic latching relay of claim 1, wherein, The push card is provided with two clamping recesses, and the two clamping recesses are arranged symmetrically about the connecting part in a third direction, and the third direction is perpendicular to the first direction and the second direction.

3. The magnetic latching relay of claim 2, wherein, The armature is provided with a stop protrusion, and the stop protrusion is arranged on one side of the window in the third direction, and the stop protrusion is used to abut the push card in the second state, and the third direction is perpendicular to the first direction and the second direction.

4. The magnetic latching relay of claim 2, wherein, The stop protrusion is located on the side of the armature towards the contact assembly, and the stop protrusion is used to abut the body part of the push card in the second state.

5. The magnetic latching relay of claim 4, wherein, Along the first direction, the armature is provided with a recess structure on the other side corresponding to the stop protrusion, and the recess structure is integrally punched with the stop protrusion.

6. The magnetic latching relay of claim 5, wherein, ​ 7. The magnetic latching relay of claim 5, wherein, ​ 8. The magnetic latching relay of claim 7, wherein, ​ 9. The magnetic latching relay of claim 8, wherein, ​ 10. A latching relay according to any one of claims 5-9, characterized in that The moving contact is located on the side of the static contact facing the armature in the first direction; the push card is located on the side of the contact assembly in the second direction, and the body part of the push card is provided with a clamping groove, and at least part of the moving contact is placed in the clamping groove.

11. A latching relay according to any one of claims 5-9, characterized in that An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contacted and matched with the yoke assembly.

12. The magnetic latching relay of claim 11, wherein, The clamping part is provided with the first pushing surface and a first inclined surface on the side facing the armature, and the first inclined surface is located on the side of the first pushing surface close to the arc-shaped contact surface in the second direction. The body part is provided with the second pushing surface and a second inclined surface on the side facing the armature, and the second inclined surface is located on the side of the second pushing surface close to the arc-shaped contact surface in the second direction.

13. The magnetic latching relay of claim 11, wherein, At least one side of the connecting part in the second direction has a gap between the inner wall of the window and the armature.

14. The magnetic latching relay of claim 11, wherein, Further comprising a clamping plate assembly, the clamping plate assembly comprises two clamping plates, the two clamping plates clamp the armature and the permanent magnet in a third direction, and the two clamping plates limit the armature and the permanent magnet in the second direction; the third direction is perpendicular to the first direction and the second direction.

15. The magnetic latching relay of claim 14, wherein, A first positioning structure is arranged between the clamping plate and the permanent magnet, and the first positioning structure is used to limit the relative position of the permanent magnet in the second direction.

16. The magnetic latching relay of claim 15, wherein, The first positioning structure comprises a first protruding part arranged on the side of the clamping plate facing the other clamping plate, and the first protruding part abuts the two sides of the permanent magnet in the second direction.

17. The magnetic latching relay of claim 14, wherein, A second positioning structure is arranged between the clamping plate and the armature, and the second positioning structure is used to limit the relative position of the armature in the second direction.

18. The magnetic latching relay of claim 17, wherein, The second positioning structure comprises a groove arranged on the side of the clamping plate facing the other clamping plate and a second protruding part arranged on the surface of the armature, the second protruding part is placed in the groove matched therewith, and the armature can rotate relative to the inner wall of the groove through the second protruding part.

19. The magnetic latching relay of claim 14, wherein, A third positioning structure is arranged between the clamping plate and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly through the third positioning structure.

20. The magnetic latching relay of claim 19, wherein, The third positioning structure comprises a convex part and a concave part matched with each other, one of the convex part and the concave part is arranged on the clamping plate, and the other is arranged on the yoke assembly.

21. The magnetic latching relay of claim 14, wherein, Further comprising a base, and the magnetic circuit structure is fixed to the base through the clamping plate assembly.

22. The magnetic latching relay of claim 21, wherein, A anti-disengagement structure is arranged between the clamping plate and the base.

23. The magnetic latching relay of claim 22, wherein, The anti-disengagement structure comprises a fixed groove arranged on the base and a protruding part arranged on the clamping plate, and the protruding part and the fixed groove are in interference fit.

24. The magnetic latching relay of claim 22, wherein, The anti-disengagement structure comprises a fixing groove arranged on the base and a protruding part arranged on the clamping plate, the fixing groove is a through groove, the protruding part extends from the fixing groove to the opposite side of the surface of the permanent magnet, and the part of the protruding part extending out of the fixing groove is provided with a barb, and the barb is engaged with the fixing groove away from the surface of the permanent magnet.

25. The magnetic latching relay of claim 21, wherein, The base comprises a seat body and a surrounding plate extending from the seat body, the surrounding plate forms a surrounding space, and at least part of the magnetic circuit structure is arranged in the surrounding space.

26. The magnetic latching relay of claim 25, wherein, The surrounding plate is provided with a guide sliding groove extending in the second direction on both sides in the third direction. The clamping plate is provided with a guide protrusion on the side away from the other clamping plate, and the guide protrusion is arranged in the guide sliding groove.

27. The magnetic latching relay of claim 26, wherein, The clamping plate is provided with an engaging protrusion, the engaging protrusion protrudes from the surface of the guide protrusion in the first direction and is engaged with the inner wall surface of the guide sliding groove.

28. The magnetic latching relay of claim 26, wherein, The clamping plate is symmetrically arranged about the guide protrusion in the first direction.

29. The magnetic latching relay of claim 26, wherein, The seat body is provided with a placement cavity, at least part of the contact assembly is arranged in the placement cavity, and a limiting groove is arranged between the seat body forming the placement cavity and the surrounding plate, and the limiting groove extends in the second direction.

30. The latching relay of claim 11, wherein, The yoke assembly comprises a first contact part, a second contact part and a third contact part, along the second direction, the first contact part and the second contact part are arranged opposite to each other, and the third contact part is arranged between the first contact part and the second contact part; the first contact part is used for contact matching with one end of the armature to form a first beating surface, the second contact part is used for contact matching with the other end of the armature to form a second beating surface, and the second beating surface is arranged coplanar with the first beating surface; and the permanent magnet is fixed to the third contact part.

31. The magnetic latching relay of claim 30, wherein, Along the second direction, the engaging part is arranged between the first contact part and the permanent magnet; and along the first direction, the engaging part and the third contact part have a gap therebetween.

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