Magnetic latching relay

Abstract

The utility model 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 assembly, magnetic steel and an armature, the magnetic steel is arranged between the armature and the yoke assembly, the magnetic steel and the armature are arranged in a split mode, and the magnetic steel and the yoke assembly are relatively fixed; the armature is provided with a window, and the distance between the window and the edge of the armature is larger than 0. The contact assembly is arranged on the side, away from the yoke assembly, of the armature and comprises a movable contact piece and a static contact piece, and the movable contact piece can make contact with or be separated from the static contact piece. The pushing card is inserted into the opening window of the armature, and the armature contacts with the movable contact piece through the pushing card so as to drive the movable contact piece to contact with or be separated from the static contact piece. The magnetic latching relay can reduce the number of parts in the relay, shorten the processing period, improve the assembly efficiency, reduce the preparation cost, reduce the space occupied by the contact assembly in the relay, improve the integration level of structural members in the relay, and further facilitate the miniaturization of the relay.

Description

Technical Field

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

[0002] The magnetic latching relay is an electronic control device, which has a control system (also called input circuit) and a controlled system (also called output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] Existing relays use an injection molding process to mold the magnet and the armature into one piece to form an integral injection molded magnetic circuit. The integral injection molded magnetic circuit has a long processing cycle and high cost. When the height of the dynamic and static spring components of the integral injection molded relay is to be reduced, it is necessary to add features to the armature part, which makes the process complicated and the cost increased, or it is necessary to add a part, and it is impossible to achieve the design concept of fewer parts, fewer processes, and lower costs. Utility Model Content

[0004] An embodiment of the present application provides a magnetic latching relay, which can reduce the number of components in the relay, shorten the processing cycle, improve assembly efficiency and reduce preparation costs, and can also reduce the space occupied by contact components in the relay and improve the integration of structural parts in the relay, thereby facilitating miniaturization of the relay.

[0005] The present application provides a magnetic latching relay, comprising: a magnetic circuit structure, the magnetic circuit structure comprising a yoke assembly, a magnetic steel and an armature, the armature and at least a portion of the yoke assembly are arranged relative to each other to form a first direction; along the first direction, the magnetic steel is placed between the armature and the yoke assembly, and the magnetic steel and the armature are arranged in a split type, and the magnetic steel and the yoke assembly are relatively fixed; 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;

[0006] A contact assembly, the contact assembly is disposed along the first direction on a side of the armature away from the yoke assembly, the contact assembly comprises a moving contact piece and a stationary contact piece, and the moving contact piece can contact or separate from the stationary contact piece;

[0007] A push card is inserted into the window of the armature, and the armature contacts the moving contact piece through the push card to drive the moving contact piece to contact or separate from the stationary contact piece.

[0008] According to some embodiments of the utility model, the push card has a first state and a second state relative to the armature, and the push card is configured to at least partially penetrate from one side of the window toward the moving contact piece to the other side in the first state; the push card is configured to have a rotation angle greater than 0° in the second state relative to the first state, and the push card is also configured to connect to the armature in the second state so as to move along the first direction under the action of the armature.

[0009] According to some embodiments of the utility model, the rotation angle is 90 degrees.

[0010] According to some embodiments of the utility model, the pushing card is provided with a locking recess; in the second state, at least a portion of the armature is placed in the locking recess; the locking recess has a first pushing surface and a second pushing surface arranged opposite to each other in the first direction, the first pushing surface being configured to push the armature toward a side surface of the contact assembly in the second state, and the second pushing surface being configured to push the armature away from a side surface of the contact assembly in the second state.

[0011] According to some embodiments of the utility model, the pushing card includes a main body, a connecting part and a snap-fitting part, the snap-fitting part is connected to the main body through the connecting part, and the main body, the connecting part and the snap-fitting part cooperate to form the snap-fitting recess; at least part of the connecting part is used to be placed in the window, and the snap-fitting part is used to penetrate the window in the first state.

[0012] According to some embodiments of the utility model, the push card is provided with two engaging recesses, and the two engaging recesses are symmetrically arranged about the connecting portion in a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0013] According to some embodiments of the utility model, the armature is provided with a stop protrusion, and the stop protrusion is placed on one side of the window along a 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.

[0014] According to some embodiments of the utility model, the stop protrusion is located on a side of the armature facing the contact assembly, and the stop protrusion is used to abut against the body of the push card in the second state.

[0015] According to some embodiments of the utility model, along the first direction, the armature is provided with a recessed structure on the other side corresponding to the stop protrusion, and the recessed structure and the stop protrusion are stamped as one piece.

[0016] According to some embodiments of the utility model, the moving contact piece is located on the side of the static contact piece facing the armature along the first direction; the pushing card is located on the side of the contact assembly along the second direction, and the main body of the pushing card is provided with a snap-fit ​​groove, and at least a portion of the moving contact piece is placed in the snap-fit ​​groove.

[0017] According to some embodiments of the utility model, an arc-shaped contact surface is provided between the armature and the magnet, the armature contacts one side magnetic pole of the magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the magnet through the arc-shaped contact surface so that the two ends of the armature are alternately contacted and cooperated with the yoke assembly.

[0018] According to some embodiments of the utility model, the engaging portion is provided with the first push surface and the first inclined surface on the side facing the armature, and the first inclined surface is located on the side of the first push surface close to the arc-shaped contact surface along the second direction;

[0019] The main body is provided with the second push surface and the second inclined surface on a side facing the armature, and the second inclined surface is located along the second direction on a side of the second push surface close to the arc-shaped contact surface.

[0020] According to some embodiments of the utility model, a gap is provided between at least one side of the connecting portion in the second direction and an inner wall of the armature forming the window.

[0021] According to some embodiments of the utility model, it also includes a clamping plate assembly, which includes two clamping plates, the two clamping plates clamp the armature and the magnet in a third direction, and the two clamping plates limit the armature and the magnet in the second direction; the third direction is perpendicular to the first direction and the second direction.

[0022] According to some embodiments of the utility model, a first positioning structure is provided between the clamping plate and the magnetic steel, and the first positioning structure is used to limit the relative position of the magnetic steel in the second direction.

[0023] According to some embodiments of the utility model, the first positioning structure includes a first protrusion provided on one side of the clamping plate facing the other clamping plate, and the first protrusion abuts against two sides of the magnetic steel in the second direction.

[0024] According to some embodiments of the utility model, a second positioning structure is provided 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.

[0025] According to some embodiments of the utility model, the second positioning structure includes a groove provided on the side of the clamping plate facing the other clamping plate and a second protrusion provided on the surface of the armature, the second protrusion is placed in the groove matching therewith, and the armature can rotate relative to the inner wall of the groove through the second protrusion.

[0026] According to some embodiments of the utility model, a third positioning structure is provided between the clamping plate and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly via the third positioning structure.

[0027] According to some embodiments of the utility model, the third positioning structure includes a convex portion and a concave portion that are adapted to each other, one of the convex portion and the concave portion is arranged on the clamping plate, and the other is arranged on the yoke assembly.

[0028] According to some embodiments of the utility model, a base is further included, and the magnetic circuit structure is fixed to the base through the clamping plate assembly.

[0029] According to some embodiments of the utility model, an anti-slip structure is provided between the splint and the base.

[0030] According to some embodiments of the utility model, the anti-slip structure includes a fixing groove provided on the base and a protrusion provided on the clamping plate, and the protrusion is interference fit with the fixing groove.

[0031] According to some embodiments of the utility model, the anti-slip structure includes a fixing groove provided on the base and a protrusion provided on the clamping plate, the fixing groove is a through groove, the protrusion extends from the fixing groove toward one side surface of the magnetic steel to the other side, and the part of the protrusion extending out of the fixing groove is provided with a barb, and the barb is engaged with the surface of the fixing groove facing away from the magnetic steel.

[0032] According to some embodiments of the utility model, the base includes a seat body and an enclosure plate extending from the seat body, the enclosure plate forms an enclosure space, and at least a portion of the magnetic circuit structure is located in the enclosure space.

[0033] According to some embodiments of the utility model, the baffle plate is provided with guide grooves extending along the second direction on both opposite sides in the third direction;

[0034] The clamping plate is provided with a guide protrusion on the side facing away from the other clamping plate, and the guide protrusion is placed in the guide sliding groove.

[0035] According to some embodiments of the utility model, the clamping plate is provided with a snap-fitting protrusion, which protrudes from the surface of the guide protrusion in the first direction and snaps into the inner wall surface of the guide slot.

[0036] According to some embodiments of the utility model, the clamping plate is symmetrically arranged with respect to the guide protrusion in the first direction.

[0037] According to some embodiments of the utility model, the seat body is provided with a placement cavity, at least a portion of the contact assembly is placed in the placement cavity, and a limiting groove is provided between the seat body forming the placement cavity and the enclosing plate, and the limiting groove extends in the second direction.

[0038] According to some embodiments of the utility model, the yoke assembly includes a first contact portion, a second contact portion and a third contact portion. Along the second direction, the first contact portion and the second contact portion are arranged opposite to each other, and the third contact portion is placed between the first contact portion and the second contact portion; the first contact portion is used to contact and cooperate with one end of the armature to form a first snapping surface, and the second contact portion is used to contact and cooperate with the other end of the armature to form a second snapping surface, and the second snapping surface is arranged coplanar with the first snapping surface; the magnetic steel is fixed to the third contact portion.

[0039] According to some embodiments of the utility model, along the second direction, the engaging portion is disposed between the first contact portion and the magnetic steel; and along the first direction, there is a gap between the engaging portion and the third contact portion.

[0040] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0041] 1. The magnetic latching relay provided in the present application does not have other protruding structures set on the armature alone, and 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 spacing greater than 0 with the edge of the armature in the second direction. This structural setting allows the window to be set in the non-end area of ​​the armature, which can reduce the size of the moving contact piece and the static contact piece in the second direction, reduce the space occupied by the contact assembly in the relay, and improve the integration of the structural parts in the relay, which is conducive to the miniaturization of the relay, and can achieve the purpose of low copper consumption to reduce the preparation cost.

[0042] At the same time, the contact and disengagement operation of the moving contact piece and the stationary contact piece in the overall driving contact assembly formed by connecting the armature and the push card of the magnetic holding relay provided in the present application can improve the stability of the driving process, ensure that the moving contact piece effectively contacts or disengages from the stationary contact piece, and thereby improve the structural performance of the magnetic holding relay.

[0043] Moreover, in the magnetic latching relay provided by the present application, the armature and the magnetic steel are of a split structure, and no integral insert injection molding is required during the preparation process, making the parts simple and easy to prepare, and can improve the production efficiency and production quality of the parts and reduce the preparation cost. Moreover, when assembling the armature and the magnetic steel, a single machine can be used for automatic assembly, which reduces the difficulty of assembly and improves the assembly efficiency of the parts.

[0044] 2. The magnetic latching relay provided in the present application has an opening in the armature as a push card assembly and push-pull position, so that the push card can at least partially pass through the opening in the first state, and in this process, there is no scratch between the push card and the side wall of the opening. In addition, the structural setting also allows the push card to effectively connect to the armature to form a whole when switching to the second state.

[0045] 3. In the magnetic holding relay provided in the present application, when the push card switches from the first state to the second state, the armature is confined between the first pushing surface and the second pushing surface of the engaging recess along the first direction, so that the armature and the push card form a whole, effectively driving the contact and separation operations of the moving contact piece and the stationary contact piece.

[0046] 4. In the magnetic latching relay provided in the present application, the armature and the magnetic steel are formed into a whole through the clamping plate assembly to realize the integrated insertion of the magnetic circuit structure, thereby achieving the effects of extremely simple assembly process, simple parts molding, and low cost.

[0047] At the same time, since the magnetic circuit structure is assembled with the base through the clamping plate assembly, the clamping plate assembly, as a transition piece connecting the magnetic circuit structure and the base, can reduce the risk of scraping. Moreover, during the assembly process of the clamping plate assembly and the base, the plastic clamping plate assembly contacts the plastic base, reducing the probability of scraping and the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 What is shown is a plan view of a magnetic latching relay provided by an embodiment of the utility model;

[0049] Figure 2 It shows Figure 1 Sectional view at AA in the middle;

[0050] Figure 3 It shows Figure 1 Schematic diagram of the three-dimensional structure of the medium magnetic latching relay without the housing;

[0051] Figure 4 It shows Figure 3 A schematic plan view of the structure;

[0052] Figure 5 It shows Figure 3 A schematic diagram of the three-dimensional structure of the push card;

[0053] Figure 6 It shows Figure 5 A schematic diagram of the three-dimensional structure of the push card at another angle;

[0054] Figure 7 It shows Figure 5 A schematic diagram of the push card in the middle;

[0055] Figure 8 It shows Figure 3 Schematic diagram of the three-dimensional structure of the middle armature;

[0056] Fig. 9 It shows Figure 8 A schematic diagram of the three-dimensional structure of the middle armature at another angle;

[0057] Fig.10 It shows Figure 5 Push card and Figure 8 Schematic diagram of the three-dimensional structure of the middle armature;

[0058] Fig.11 What is shown is a three-dimensional schematic diagram of the structure at another angle;

[0059] Fig.12 It shows Figure 4 Schematic diagram of the three-dimensional structure of the middle part;

[0060] Fig.13 It shows Fig.12 A schematic diagram of the three-dimensional structure of the middle splint assembly;

[0061] Fig.14 It shows Fig.12 Middle structure assembly Fig.13 A schematic diagram of the plane after the middle splint assembly;

[0062] Fig.15 It shows Fig.14 The enlarged schematic diagram of point B in the middle;

[0063] Fig.16 It shows Figure 3 Schematic diagram of the three-dimensional structure of the middle base.

[0064] The following are the descriptions of the reference numerals:

[0065] 100, magnetic circuit structure; 110, yoke assembly; 111, first contact portion; 112, second contact portion; 113, third contact portion; 114, convex portion; 120, magnetic steel; 130, armature; 131, window; 132, stop protrusion; 133, recessed structure; 134, convex burl; 135, second protrusion; 140, clamp assembly; 141, clamp; 1411, first protrusion; 1412, push portion; 1413, groove; 1414, recess; 1415, protrusion; 1416, barb; 1417, guide protrusion; 1418, engaging protrusion , a first engaging groove; a second engaging groove; a second engaging groove; a second engaging groove; a first ... DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0067] The present application embodiment provides a magnetic latching relay. Figures 1 to 4 The structure shown in FIG. 1 is a magnetic latching relay comprising a magnetic circuit structure 100, a contact assembly 200 and a push card 300. Figures 5 to 16 The structure shown refers to Figures 1 to 4In the structure shown, the magnetic circuit structure 100 includes a yoke assembly 110, a magnetic steel 120 and an armature 130, wherein the armature 130 and at least a portion of the yoke assembly 110 are arranged relative to each other to form a first direction X; along the first direction X, the magnetic steel 120 is disposed between the armature 130 and the yoke assembly 110, and the magnetic steel 120 and the armature 130 are arranged in a split type, and the magnetic steel 120 and the yoke assembly 110 are relatively fixed; the armature 130 is provided with a window 131, and the window 131 is in a second direction Z with the armature 130 The edges have a spacing greater than 0, and the second direction Z is perpendicular to the first direction X; the contact assembly 200 is placed along the first direction X on the side of the armature 130 away from the yoke assembly 110, and the contact assembly 200 includes a moving contact piece 210 and a stationary contact piece 220, and the moving contact piece 210 can contact or disengage from the stationary contact piece 220; the push card 300 is inserted into the window 131 of the armature 130, and the armature 130 contacts the moving contact piece 210 by pushing the card 300 to drive the moving contact piece 210 to contact or disengage from the stationary contact piece 220.

[0068] It is understood that the shape of the armature 130 is not limited to Figure 2 As shown in the flat plate structure, the armature 130 can also be L-shaped or gate-shaped, as long as the armature 130 and at least part of the yoke assembly 110 are arranged opposite to each other and form a first direction X, so that the magnet 120 is placed between the armature 130 and the yoke assembly 110 along the first direction X.

[0069] As an example, when the magnetic holding relay provided in the embodiment of the present application is used, the armature 130 can be used to drive the push card 300 to move in a branch direction X1 of the first direction X, so that the moving contact piece 210 is separated from the stationary contact piece 220; conversely, the armature 130 can be used to drive the push card 300 to move in another opposite branch direction X2 of the first direction X, so that the stationary contact piece 220 is in contact with the moving contact piece 210.

[0070] It should be noted that the magnetic latching relay provided in the embodiment of the present application does not have other protruding structures separately set 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 a 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. This structural setting allows the window 131 to be set in the non-end area of ​​the armature 130, which can reduce the size of the moving contact piece 210 and the static contact piece 220 in the second direction Z, reduce the space occupied by the contact assembly 200 in the relay, and improve the integration of the structural parts in the relay, which is conducive to the miniaturization of the relay, and can achieve the purpose of low copper consumption to reduce the preparation cost.

[0071] At the same time, the contact and disengagement operation of the moving contact piece 210 and the stationary contact piece 220 in the overall driving contact assembly 200 formed by connecting the armature 130 and the push card 300 of the magnetic holding relay provided in the embodiment of the present application can improve the stability of the driving process, ensure that the moving contact piece 210 effectively contacts or disengages from the stationary contact piece 220, and thereby improve the structural performance of the magnetic holding relay.

[0072] Moreover, in the magnetic latching relay provided in the embodiment of the present application, the armature 130 and the magnetic steel 120 are of a split structure, and no integral insert injection molding is required during the preparation process, making the parts simple and easy to prepare, and can improve the production efficiency and production quality of the parts and reduce the preparation cost. Moreover, when assembling the armature 130 and the magnetic steel 120, a single machine can be used for automatic assembly, which reduces the difficulty of assembly and improves the efficiency of assembly of parts.

[0073] It is worth noting that if the second direction Z is defined as the vertical direction, the application of the magnetic latching relay provided in the embodiment of the present application can reduce the height dimensions of the stationary contact piece 220 and the moving contact piece 210, thereby achieving the purpose of low height and low copper loss.

[0074] In one embodiment, please continue to refer to Figures 5 to 11 In the structure shown, 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 of the window 131 toward the moving contact piece 210 to the other side in the first state; the push card 300 is configured to have a rotation angle greater than 0° in the second state relative to the first state, and the push card 300 is also configured to be connected to the armature 130 in the second state so as to move along the first direction X under the action of the armature 130.

[0075] When assembling the magnetic latching relay provided in the embodiment of the present application, the push card 300 can be rotated to switch the push card 300 from the first state to the second state, thereby connecting the armature 130. After the push card 300 is connected to the armature 130, the push card 300 can move along the first direction X under the action of the armature 130, thereby driving the moving contact piece 210 to contact or separate from the stationary contact piece 220.

[0076] It should be noted that the magnetic latching relay provided in the embodiment of the present application is provided with a 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 at least partially pass through the window 131 in the first state, and in this process, there is no scratch between the push card 300 and the side wall of the window 131. In addition, this structural setting also allows the push card 300 to effectively connect with the armature 130 to form a whole when switching to the second state.

[0077] It is worth noting that in the related art, the relay adopts a protruding structure added to the swing arm of the armature 130, and is assembled into the push card 300 by interference fit. This interference fit method will cause scraping problems. However, the magnetic latching relay provided in the embodiment of the present application is provided with a push card 300 that can rotate relative to the armature 130 to switch from the first state to the second state, and during the assembly process of the two, there is no rigid interference fit between the push card 300 and the armature 130, which can avoid the push card 300 and the armature 130 from scratching during assembly, thereby reducing the amount of scraping between the two, reducing the amount of foreign matter generated during the assembly process, and improving product quality.

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

[0079] In one embodiment, please combine Figures 5 to 7 refer to Figures 8 to 11 In the structure shown, the push card 300 is provided with a locking recess A; in the second state, at least a portion of the armature 130 is placed in the locking recess A; the locking recess A has a first pushing surface M1 and a second pushing surface M2 relatively arranged in the first direction X, the first pushing surface M1 is configured to push the armature 130 toward a side surface of the contact assembly 200 in the second state, and the second pushing surface M2 is configured to push the armature 130 away from a side surface of the contact assembly 200 in the second state.

[0080] It should be noted that when the pushing card 300 switches 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 pushing card 300 form a whole, effectively driving the contact and separation operations of the moving contact piece 210 and the stationary contact piece 220.

[0081] In a specific embodiment, please continue to combine Figures 5 to 7 refer to Figures 8 to 11 In the structure shown, the push card 300 includes a main body 310, a connecting portion 320 and a snap-fitting portion 330. The snap-fitting portion 330 is connected to the main body 310 through the connecting portion 320, and the main body 310, the connecting portion 320 and the snap-fitting portion 330 cooperate to form a snap-fitting recess A; at least a portion of the connecting portion 320 is used to be placed in the window 131, and the snap-fitting portion 330 is used to penetrate the window 131 in the first state.

[0082] It is worth noting that when setting the size of the engaging portion 330 , the engaging portion 330 must be able to pass through the window 131 in the first state, and be able to be engaged with the surface of the armature 130 facing away from the contact assembly 200 in the second state.

[0083] In one embodiment, please continue to refer to Figures 5 to 7 In the structure shown, 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 in the third direction Y, and the third direction Y is perpendicular to the first direction X and the second direction Z.

[0084] It should be noted that the symmetrical structural setting enables the push card 300 to have a first push surface M1 and a second push surface M2 on both sides in the third direction Y. Specifically, when the armature 130 drives the push card 300 to move, the first push surface M1 or the second push surface M2 located on both sides of the connecting portion 320 can play a role stably to improve the stability of the armature 130 and the push card 300 after connection, thereby improving the contact and separation effect of the stationary contact piece 220 and the movable contact piece 210.

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

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

[0087] It is worth noting that if the second direction Z represents the vertical direction, the stop protrusion 132 can be only arranged at the bottom of the push card 300 to prevent the push card 300 from falling due to gravity, affecting the state after the push card 300 is connected to the armature 130, causing the push card 300 to be displaced in the second direction Z, affecting the contact and separation operation between the moving contact piece 210 and the stationary contact piece 220.

[0088] When the stop protrusion 132 is arranged, the stop protrusion 132 can abut against the engaging portion 330, the connecting portion 320 or the main body 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 against the main body 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 main body 310, the stop protrusion 132 is roughly located in the middle or close to the middle position of the push card 300 along the first direction X, which can enhance the stopping effect and improve the stability of the armature 130 and the push card 300 after assembly.

[0090] Moreover, since the size of the main body 310 is larger, its structural strength is increased, which can prevent the main body 310 from being broken or bent due to the stop protrusion 132, and its service life can be increased.

[0091] In one embodiment, along the first direction X, the armature 130 is provided with a recessed structure 133 on the other side corresponding to the stop protrusion 132 , and the recessed structure 133 and the stop protrusion 132 are stamped as one piece.

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

[0093] In one embodiment, please combine Figure 5 and Figure 6 refer to Fig.12 In the structure shown, the movable contact piece 210 is located on the side of the stationary contact piece 220 facing the armature 130 along the first direction X; the pushing card 300 is located on the side of the contact assembly 200 along the second direction Z, and the main body 310 of the pushing card 300 is provided with a snap-fitting groove 311, and at least a part of the movable contact piece 210 is placed in the snap-fitting groove 311; so that the movable contact piece 210 is driven to move along the direction X1 or the direction X2 by the pushing card 300.

[0094] Furthermore, a driving protrusion 312 may be provided on the side of the body 310 facing the contact assembly 200, and the driving protrusion 312 may be placed on the side of the engaging groove 311 along the first direction X to enhance the driving effect of the push card 300 on the movable contact piece 210. Preferably, the driving protrusion 312 is located between the engaging groove 311 and the armature 130 to avoid the contact position between the movable contact piece 210 and the stationary contact piece 220.

[0095] It is worth noting that there are many possible assembly forms of the yoke assembly 110, the armature 130 and the magnetic steel 120 in the embodiment of the present application, at least one of the following forms.

[0096] In one embodiment, please continue to refer to Fig.12 In the structure shown, an arc-shaped contact surface is provided between the armature 130 and the magnet 120, and the armature 130 contacts one side pole of the magnet 120 through the arc-shaped contact surface, and the armature 130 is rotatably arranged relative to the 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 should be noted that the embodiment of the present application only includes one armature 130, and the armature 130 is generally a flat plate structure, which is not only lightweight but also saves parts and reduces costs.

[0098] Of course, multiple armatures 130 can be provided as required, and the multiple armatures 130 can be horizontally arranged along the third direction Y while maintaining consistency of action, which will not be described in detail.

[0099] It is worth noting that when the arc-shaped contact surface between the armature 130 and the magnetic steel 120 is provided, there are various possible forms of the arc-shaped contact surface. For example, the armature 130 is provided with a bulge 134 on the side facing the magnetic steel 120, and the bulge 134 forms an arc-shaped contact surface, and the armature 130 contacts the magnetic steel 120 through the arc-shaped contact surface; or, the magnetic steel 120 is provided with a bulge on the side facing the armature 130, and the bulge forms an arc-shaped contact surface, and the armature 130 contacts the magnetic steel 120 through the arc-shaped contact surface.

[0100] When the convex bulge 134 is provided on the armature 130, the convex bulge 134 and the armature 130 may be an integrated structure to improve the rotation stability of the armature 130. Of course, the armature 130 and the convex bulge 134 may also be provided as a separate structure according to the requirements, and the details are not repeated here.

[0101] Similarly, the arrangement between the convex bulge and the magnetic steel 120 may refer to the arrangement between the convex bulge 134 and the armature 130 , and the details will not be repeated here.

[0102] In one embodiment, Figure 5 and Figure 6 As shown, the locking 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 along the second direction Z on the side of the first pushing surface M1 close to the arc-shaped contact surface; the main 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 along the second direction Z on the side of the second pushing surface M2 close to the arc-shaped contact surface.

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

[0104] In one embodiment, there is a gap between the connecting portion 320 and the inner wall of the armature 130 forming the window 131 on at least one side in the second direction Z to prevent the connecting portion 320 of the armature 130 from getting stuck relative to the push card 300 during the swinging process of the armature 130, so that the armature 130 can function normally.

[0105] In one embodiment, please refer to Fig.12 and Fig.13As shown in the structure, the magnetic holding relay provided in the embodiment of the present application also includes a clamping plate assembly 140, and the clamping plate assembly 140 includes two clamping plates 141. The two clamping plates 141 clamp the armature 130 and the magnet 120 in the third direction Y, and the two clamping plates 141 limit the armature 130 and the magnet 120 in the 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 in the embodiment of the present application, the armature 130 and the magnetic steel 120 are formed into a whole through the clamping plate assembly 140 to realize the integrated insertion of the magnetic circuit structure 100, thereby achieving the effects of extremely simple assembly process, simple parts molding, and low cost.

[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 scraping. Moreover, during the assembly process 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 scraping and reduces the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality.

[0108] It is understandable that the magnet 120 and the armature 130 may be in direct contact or may be provided with a magnetic conductive member and indirectly contacted through the magnetic conductive member. Similarly, the magnet 120 and the yoke assembly 110 may be in direct contact or may be provided with a magnetic conductive member and indirectly contacted through the magnetic conductive member.

[0109] It is worth noting that other fixing structures may be provided between the magnetic steel 120 and the yoke assembly 110, or the yoke assembly 110 may be attracted only by the magnetic steel 120. For example, during the assembly process, the magnetic steel 120 may be magnetized first to ensure that the relative position of the magnetic steel 120 and the yoke assembly 110 meets the requirements, and then the assembly operation of other structural parts is completed.

[0110] In one embodiment, a first positioning structure is provided between the clamp 141 and the magnet 120. The first positioning structure is used to limit the relative position of the magnet 120 in the second direction Z to ensure that the magnet 120 is assembled to a preset position and to prevent the magnet 120 from moving along the second direction Z during use, thereby improving the structural performance of the relay.

[0111] In a specific embodiment, the first positioning structure may be provided only on the surface of the clamping plate 141. Fig.13 refer to Fig.12 and Fig.14The structure shown, as an example, the first positioning structure includes a first protrusion 1411 arranged on one side of the clamp 141 facing the other clamp 141, and the first protrusion 1411 abuts against both sides of the magnetic steel 120 in the second direction Z to limit the relative position of the magnetic steel 120 in the second direction Z.

[0112] Specifically, in this embodiment, two first protrusions 1411 are disposed on the surface of each clamping plate 141 , and the two first protrusions 1411 are arranged opposite to each other in the second direction Z to limit the relative arrangement of the magnetic steel 120 in the second direction Z.

[0113] like Figure 12 to Figure 14 As shown, in this example, the first protrusions 1411 at corresponding positions on the two clamping plates 141 cooperate with each other to enhance the limiting effect on the magnetic steel 120. If the second direction Z in the embodiment of the present application is the vertical direction, and the side of each structural member close to the base 410 is defined as the bottom. Then the first protrusion 1411 on one clamping plate 141 and the first protrusion 1411 on the other clamping plate 141 jointly limit the bottom of the magnetic steel 120, and at the same time, the first protrusion 1411 on one clamping plate 141 and the first protrusion 1411 on the other clamping plate 141 jointly limit the top of the magnetic steel 120.

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

[0115] Of course, the first protrusion 1411 may also be provided only on the clamping plate 141 located on one side of the magnetic steel 120 , and details thereof will not be repeated herein.

[0116] Alternatively, in another specific embodiment, the first positioning structure may be partially disposed on the surface of the magnetic steel 120 and partially disposed on the surface of the clamping plate 141. Specifically, the first positioning structure includes a concave portion and a convex portion that cooperate with each other, and one of the convex portion and the concave portion is disposed on the magnetic steel 120, and the other is disposed on the clamping plate 141.

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

[0118] In order to facilitate the assembly of the magnetic steel 120 in the limiting space formed by the first protrusion 1411, it is also possible to Fig.13 As shown, a guiding slope (not shown) is provided on the first protrusion 1411 to facilitate the insertion of the magnet 120 and prevent the sharp corners of the first protrusion 1411 from scratching the magnet 120 and affecting the performance of the magnet 120.

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

[0120] It is worth noting that Fig.13 The push portion 1412 is disposed between and connected to two first protrusions 1411 of the same clamping plate 141 to enhance the structural strength of the clamping plate 141 .

[0121] Please combine Fig.13 refer to Fig.12 and Fig.14 In the structure shown, 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 magnetic steel 120 are separately arranged, the armature 130 is attracted by the magnetic steel 120 and will not fall off, and the magnetic steel 120 does not need to be pressed against the armature 130 in the first direction X. However, during the assembly process, the assembly operation of the armature 130 may be earlier than the magnetization operation of the magnetic steel 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 structural setting allows the armature 130 to be effectively positioned by the clamp assembly 140, and the assembly sequence of the armature 130 can be earlier than the magnetization step of the magnet 120, so that the position of the magnet 120 can be adjusted as needed before magnetization, thereby reducing the difficulty of assembly and improving assembly efficiency.

[0123] It is worth noting that there are many possibilities for the structural setting of the second positioning structure in the embodiment of the present application.

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

[0125] It should be noted that, in this specific embodiment, the second protrusion 135 on the surface of the armature 130 is placed in a groove 1413 on the clamping plate 141 that cooperates with it. The groove 1413 can limit the second protrusion 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 Fig.15 As shown, along the first direction X and the second direction Z, there is a gap between the second protrusion 135 and the inner wall of the groove 1413 to ensure the rotation effect of the second protrusion 135 and avoid jamming.

[0127] In order to further optimize the rotation effect of the second protrusion 135 relative to the groove 1413 to avoid jamming. Fig.14 refer to Fig.15 In the structure shown, the clamping plate 141 is used to form the inner wall of the groove 1413, including a first extension segment P1, a second extension segment P2, a third extension segment P3 and a fourth extension segment P4 connected in sequence, wherein the first extension segment P1 and the third extension segment P3 are arranged relatively to each other in the second direction Z, the second extension segment P2 and the fourth extension segment P4 are arranged relatively to each other in the first direction X, and the second extension segment P2, the third extension segment P3 and the fourth extension segment P4 are straight line segments, the fourth extension segment P4 is located on the side of the second extension segment P2 away from the magnetic steel 120, and the fourth extension segment P4 is a curved segment convex in the direction away from the magnetic steel 120. The protrusion 135 of the armature 130 includes a first surface Q1, a second surface Q2, a third surface Q3 and a fourth surface Q4. The first surface Q1 and the third surface Q3 are arranged opposite to each other in the second direction Z, the second surface Q2 and the fourth surface Q4 are arranged opposite to each other in the first direction X, the fourth surface Q4 is located on the side of the armature 130 away from the magnet 120, and there is a slope Q5 between the first surface Q1 and the fourth surface Q4, and there is a slope Q6 between the third surface Q3 and the fourth surface Q4.

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

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

[0130] In one embodiment, the groove 1413 passes through the two opposite sides of the clamping plate 141 in the third direction Y, that is, the groove 1413 is a through groove. At this time, the second protrusion 135 does not exceed the surface of the clamping plate 141 on one side away from the other clamping plate 141, so as to reduce the difficulty of assembly, and prevent the second protrusion 135 from exceeding the clamping plate 141 and scratching the base 410, which can further reduce the risk of scraping and reduce the difficulty of assembly.

[0131] Of course, the groove 1413 may also be arranged to have 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 combine Fig.13 refer to Fig.12 and Fig.14 In the structure shown, a 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 via the third positioning structure.

[0133] It should be noted that in the embodiment of the present application, the yoke assembly 110, the magnet 120 and the armature 130 form a whole through the clamping plate assembly 140, which can further improve the integration of various structural components in the magnetic circuit structure 100, thereby reducing the difficulty of assembling the magnetic circuit structure 100 and the base 410 and improving the assembly efficiency.

[0134] It is worth noting that, since the yoke assembly 110 in this embodiment is also fixed by the clamping plate assembly 140, when assembling the magnetic latching relay provided in the embodiment of the present application, all components can be assembled, and then the magnetic steel 120 can be pressed to magnetize. After magnetization, the magnetic steel 120 is adsorbed on the surface of the yoke assembly 110, and at the same time, the armature 130 is attracted by the magnetic steel 120 and will not fall off. Accordingly, when the armature 130 and the magnetic steel 120 are separately arranged, the magnetic steel 120 does not need to be pressed against the armature 130 in the first direction X to limit the position.

[0135] In one embodiment, the third positioning structure includes a convex portion 114 and a concave portion 1414 adapted to each other, one of the convex portion 114 and the concave portion 1414 is provided on the clamping plate 141, and the other is provided on the yoke assembly 110. For example, Figure 12 to Figure 14 As shown, a concave portion 1414 is provided on the surface of the clamping plate 141 , and a convex portion 114 is provided on the surface of the yoke assembly 110 , and the convex portion is placed in the corresponding concave portion 1414 .

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

[0137] Please continue to refer to Figure 12 to Figure 14 In the structure shown, in a specific embodiment, the recess 1414 can penetrate the clamping plate 141 in the third direction Y, so that the protrusion 114 is effectively placed in 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 concave portion 1414 penetrates the clamping plate 141 in the third direction Y, it is possible to timely observe whether the convex portion 114 is assembled in place, thereby reducing the difficulty of assembly and improving the assembly efficiency.

[0139] In one embodiment, the magnetic latching relay provided in the embodiment of the present application further includes a base 410 , and the magnetic circuit structure 100 is fixed to the base 410 via a 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 serves as a transition piece connecting the magnetic circuit structure 100 and the base 410, which can reduce the risk of scraping. Moreover, during the assembly process 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 scraping and reduces the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality.

[0141] In order to solve the problem that the magnetic circuit structure 100 is prone to movement along the second direction Z after assembly, resulting in shortening of the product pins, in one embodiment, an anti-detachment structure is provided between the clamping plate 141 and the base 410 to prevent the magnetic circuit structure 100 from detaching from the base 410.

[0142] In a specific embodiment, the anti-drop structure includes a fixing groove provided on the base 410 and a protrusion provided on the clamping plate 141 , and the protrusion is interference-fitted with the fixing groove.

[0143] It should be noted that the magnetic circuit structure 100 achieves the fixing operation between the clamping plate 141 and the base 410 by setting the protrusion and the fixing groove in an interference fit manner, which can improve the stability of the clamping plate assembly 140 after being assembled relative to the base 410 and prevent the magnetic circuit structure 100 from detaching 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 protrusion and the fixing groove, there is no interference fit between the clamping plate 141 and the baffle plate 412 of the base 410, which can reduce the possibility of scratches between the two. At the same time, during the assembly process of the clamping plate assembly 140 and the base 410, the plastic clamping plate assembly 140 contacts the plastic base 410, reducing the probability of scraping and reducing the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality.

[0145] In another specific embodiment, please combine Fig.13 refer to Fig.16In the structure shown, the anti-slip structure includes a fixing groove provided on the base 410 and a protrusion 1415 provided on the clamping plate 141, the fixing groove is a through groove, the protrusion 1415 extends from the fixing groove toward one side of the magnetic steel 120 to the other side, and the part of the protrusion 1415 extending out of the fixing groove is provided with a barb 1416, and the barb 1416 is engaged with the fixing groove on the side of the surface facing away from the magnetic steel 120.

[0146] During assembly, the protrusion 1415 with the barb 1416 can be inserted into the fixing groove. After the barb 1416 passes through the other side surface of the fixing groove, the barb 1416 can be engaged with the side surface of the fixing groove away from the magnetic steel 120 to further enhance the engagement strength between the splint 141 and the base 410 and prevent the protrusion 1415 from falling out of the fixing groove.

[0147] It is worth noting that in order to facilitate the barb 1416 to pass through the fixing groove during assembly, the inner wall of the fixing groove can be provided with a first guide bevel, and the barb 1416 is provided with a corresponding second guide bevel toward the position of the first guide bevel to reduce the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality.

[0148] In one embodiment, please combine Fig.16 refer to Fig.14 In the structure shown, the base 410 includes a base body 411 and a baffle plate 412 extending from the base body 411 , the baffle plate 412 forms an enclosure space, and at least a portion of the magnetic circuit structure 100 is located in the enclosure space.

[0149] It should be noted that in the embodiment of the present application, the magnetic circuit structure 100 is formed as a whole by the clamping plate assembly 140. When the magnetic circuit structure 100 is assembled in the enclosure space, there is no need for interference fit between the magnetic circuit structure 100 and the enclosure plate 412, which can reduce the probability of scraping and the amount of scraping between the two, thereby reducing the amount of foreign matter generated during the assembly process and improving product quality.

[0150] In one embodiment, please combine Fig.13 and Fig.16 refer to Fig.14 In the structure shown, the enclosing plate 412 is provided with guide grooves 4121 extending along the second direction Z on both opposite sides 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 groove 4121 to ensure that the magnetic circuit structure 100 is assembled in place and reduce the difficulty of assembly.

[0151] Specifically, since the clamping plate 141 is symmetrically designed, the clamping plate 141 can be assembled on one side or the other side of the magnetic steel 120 along the third direction Y, which can reduce the assembly difficulty and improve the assembly efficiency.

[0152] To prevent the magnetic circuit structure 100 from shaking during the assembly process, in one embodiment, continue to combine Fig.13 and Fig.16 refer to Fig.14 In the structure shown, the clamping plate 141 is provided with a locking protrusion 1418 , which protrudes from the surface of the guide protrusion 1417 in the first direction X and is locked to the inner wall surface of the guide slot 4121 .

[0153] In one embodiment, the clamping plate 141 is symmetrically arranged about the guide protrusion 1417 in the first direction X. Specifically, Fig.13 As shown, the first protrusion 1411, the push portion 1412, the groove 1413, the recess 1414, the protrusion 1415 and the barb 1416 are symmetrically arranged on both sides of the guide protrusion 1417 to facilitate the use of the clamping plate 141 during the assembly process.

[0154] Please continue to refer to Fig.12 and Fig.14 As shown in the structure, the magnetic circuit structure 100 provided in the embodiment of the present application further includes a coil frame 150 and a coil 160 wound on the surface of the coil frame 150 .

[0155] To prevent the housing assembly 400 from being offset and skewed during assembly, the housing assembly 400 may collide with the coil 160 and cause the coil 160 to break. Fig.16 refer to Figure 3 In the structure shown, the seat body 411 is provided with a placement cavity 4111, and at least a portion of the contact component 200 is placed in the placement cavity 4111, and a limiting groove 4112 is provided between the seat body 411 and the enclosing plate 412 that form the placement cavity 4111. The limiting groove 4112 extends in the second direction Z to ensure that the assembly process of the shell component 400 will not cause the coil 160 to break, thereby reducing the process quality risk.

[0156] It is understandable that if Figure 1 and Figure 2 As shown, the housing assembly 400 includes a base 410 and a shell 420 , and the magnetic circuit structure 100 is placed in a 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. Along the second direction Z, the first contact portion 111 and the second contact portion 112 are arranged opposite to each other, and the third contact portion 113 is placed between the first contact portion 111 and the second contact portion 112; the first contact portion 111 is used to contact and cooperate with one end of the armature 130 to form a first snap-fit ​​surface, and the second contact portion 112 is used to contact and cooperate with the other end of the armature 130 to form a second snap-fit ​​surface, and the second snap-fit ​​surface is arranged coplanar with the first snap-fit ​​surface; the magnetic steel 120 is fixed to the third contact portion 113. It can be understood that in this specific embodiment, the first contact portion 111, the second contact portion 112 and the third contact portion 113 can be understood as three yokes.

[0158] It is worth noting that Fig.12 As shown, the first contact portion 111 and the second contact portion 112 exceed the third contact portion 113 in the first direction X, and there is a gap between the first contact portion 111 and the second contact portion 112 in the second direction Z, so that the magnetic steel 120 is fixed on the surface of the third contact portion 113 .

[0159] It should be noted that the embodiment of the present application uses a design scheme of three yokes and one armature 130 to expose a magnet 120, and uses the two side clamps 141 to cooperate with the yoke to position and limit the magnet 120. Among them, the support surface for the rotation of the armature 130 is the surface of the magnet 120, and the first overlap surface and the second overlap surface are used to complete the overlap of the entire magnetic circuit. Accordingly, the use of the clamp 141 can not only better position and limit the magnet 120, but also avoid scraping from 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 in the second direction Z and are fixed relative to the coil 160. It can be understood that "the first contact portion 111 and the second contact portion 112 are fixed 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, basically no relative movement occurs. Exemplarily, taking the first contact portion 111 as an example, the first contact portion 111 and the coil 160 can be directly fixedly connected (such as riveting) by certain structural parts to achieve position fixation; or, the first contact portion 111 and the coil 160 can be fixed in position by plugging or overlapping certain structural parts. Of course, other limiting structures can be set between the first contact portion 111 and the coil 160 to fix the position, which will not be described in detail.

[0161] During operation, when the coil 160 is excited, the armature 130 swings under the combined action of the magnet 120 and the yoke assembly 110, so that one end of the armature 130 contacts the first contact portion 111. When the coil 160 is de-excited, the armature 130 swings in the opposite direction, so that the other end of the armature 130 contacts the second contact portion 112.

[0162] Taking the yoke assembly 110 including an iron core as an example, the iron core and the first contact portion 111 in the yoke assembly 110 can be an integrated structure or a segmented structure. Exemplarily, when the iron core and the first contact portion 111 are a split structure, the iron core can be passed through the coil frame 150, and then the first contact portion 111 is riveted to the side end of the iron core. Afterwards, the armature 130, the magnetic steel 120, and the yoke assembly 110 including the various contact portions and the iron core can be assembled through the clamping plate assembly 140 to form a whole.

[0163] For example, the yoke assembly 110 does not include an iron core. In this case, the yoke assembly 110 only includes various contact parts. The clamping plate assembly 140 can form the armature 130, the magnet 120 and the various contact parts into a whole and then assemble them with the iron core.

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

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

[0166] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0167] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0168] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0169] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", 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 utility model embodiment. In this specification, the schematic representation 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 are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. A magnetic latching relay, characterized in that: include: A magnetic circuit structure, the magnetic circuit structure comprising a yoke assembly, a magnetic steel and an armature, the armature and at least a portion of the yoke assembly being arranged relative to each other to form a first direction; Along the first direction, the magnetic steel is placed between the armature and the yoke assembly, and the magnetic steel and the armature are separately arranged, and the magnetic steel and the yoke assembly are relatively fixed; the armature is provided with a window, and the window has a spacing greater than 0 with the edge of the armature in the second direction, and the second direction is perpendicular to the first direction; A contact assembly, the contact assembly is disposed along the first direction on a side of the armature away from the yoke assembly, the contact assembly comprises a moving contact piece and a stationary contact piece, and the moving contact piece can contact or separate from the stationary contact piece; A push card is inserted into the window of the armature, and the armature contacts the moving contact piece through the push card to drive the moving contact piece to contact or separate from the stationary contact piece.

2. The magnetic latching relay according to claim 1, characterized in that: The push card has a first state and a second state relative to the armature, and the push card is configured to at least partially penetrate from one side of the window toward the moving contact piece to the other side in the first state; the push card is configured to have a rotation angle greater than 0° in the second state relative to the first state, and the push card is also configured to connect to the armature in the second state so as to move along the first direction under the action of the armature.

3. The magnetic latching relay according to claim 2, characterized in that: The rotation angle is 90 degrees.

4. The magnetic latching relay according to claim 2, characterized in that: The pushing card is provided with a locking recess; in the second state, at least a portion of the armature is placed in the locking recess; the locking recess has a first pushing surface and a second pushing surface arranged opposite to each other in the first direction, the first pushing surface being configured to push the armature toward a side surface of the contact assembly in the second state, and the second pushing surface being configured to push the armature away from a side surface of the contact assembly in the second state.

5. The magnetic latching relay according to claim 4, characterized in that: The pushing card includes a main body, a connecting part and a snap-fitting part, wherein the snap-fitting part is connected to the main body through the connecting part, and the main body, the connecting part and the snap-fitting part cooperate to form the snap-fitting recess; at least a portion of the connecting part is used to be placed in the window, and the snap-fitting part is used to penetrate the window in the first state.

6. The magnetic latching relay according to claim 5, characterized in that: The push card is provided with two engaging recesses, and the two engaging recesses are symmetrically arranged about the connecting portion in a third direction, and the third direction is perpendicular to the first direction and the second direction.

7. The magnetic latching relay according to claim 5, characterized in that: The armature is provided with a stop protrusion, and the stop protrusion is placed on one side of the window along a 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.

8. The magnetic latching relay according to claim 7, characterized in that: The stop protrusion is located on a side of the armature facing the contact assembly, and the stop protrusion is used to abut against the main body of the push card in the second state.

9. The magnetic latching relay according to claim 8, characterized in that: Along the first direction, the armature is provided with a recessed structure on the other side corresponding to the stop protrusion, and the recessed structure and the stop protrusion are stamped integrally.

10. The magnetic latching relay according to any one of claims 5 to 9, characterized in that: The movable contact piece is located on the side of the stationary contact piece 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 main body of the push card is provided with a clamping groove, and at least part of the movable contact piece is placed in the clamping groove.

11. The magnetic latching relay according to any one of claims 5 to 9, characterized in that: An arc-shaped contact surface is provided between the armature and the magnet, and the armature contacts one side magnetic pole of the magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the 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 according to claim 11, characterized in that: The engaging portion is provided with the first push surface and the first inclined surface on the side facing the armature, and the first inclined surface is located on the side of the first push surface close to the arc-shaped contact surface along the second direction; The main body is provided with the second push surface and the second inclined surface on a side facing the armature, and the second inclined surface is located along the second direction on a side of the second push surface close to the arc-shaped contact surface.

13. The magnetic latching relay according to claim 11, characterized in that: A gap is formed between at least one side of the connecting portion in the second direction and an inner wall of the armature forming the window.

14. The magnetic latching relay according to claim 11, characterized in that: It also includes a clamping plate assembly, wherein the clamping plate assembly includes two clamping plates, the two clamping plates clamp the armature and the magnetic steel in the third direction, and the two clamping plates limit the armature and the magnetic steel in the second direction; The third direction is perpendicular to the first direction and the second direction.

15. The magnetic latching relay according to claim 14, characterized in that: A first positioning structure is provided between the clamping plate and the magnetic steel, and the first positioning structure is used to limit the relative position of the magnetic steel in the second direction.

16. The magnetic latching relay according to claim 15, characterized in that: The first positioning structure includes a first protrusion disposed on one side of the clamping plate facing the other clamping plate, and the first protrusion abuts against two sides of the magnetic steel in the second direction.

17. The magnetic latching relay according to claim 14, characterized in that: A second positioning structure is provided between the clamping plate and the armature, and the second positioning structure is used for limiting the relative position of the armature in the second direction.

18. The magnetic latching relay according to claim 17, characterized in that: The second positioning structure includes a groove provided on the side of the clamping plate facing the other clamping plate and a second protrusion provided on the surface of the armature. The second protrusion is placed in the matching groove, and the armature can rotate relative to the inner wall of the groove through the second protrusion.

19. The magnetic latching relay according to claim 14, characterized in that: A third positioning structure is provided 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 according to claim 19, characterized in that: The third positioning structure includes a convex portion and a concave portion that fit each other, one of the convex portion and the concave portion is arranged on the clamping plate, and the other is arranged on the yoke assembly.

21. The magnetic latching relay according to claim 14, characterized in that: It also includes a base, and the magnetic circuit structure is fixed to the base through the clamping plate assembly.

22. The magnetic latching relay according to claim 21, characterized in that: An anti-slip structure is provided between the clamping plate and the base.

23. The magnetic latching relay according to claim 22, characterized in that: The anti-drop structure comprises a fixing groove arranged on the base and a protruding portion arranged on the clamping plate, and the protruding portion is interference-fitted with the fixing groove.

24. The magnetic latching relay according to claim 22, characterized in that: The anti-slip structure includes a fixing groove provided on the base and a protrusion provided on the clamping plate, wherein the fixing groove is a through groove, and the protrusion extends from the fixing groove toward one side surface of the magnetic steel to the other side opposite thereto, and a portion of the protrusion extending out of the fixing groove is provided with a barb, and the barb is engaged with the surface of the fixing groove facing away from the magnetic steel.

25. The magnetic latching relay according to claim 21, characterized in that: The base includes a base body and a baffle plate extending from the base body, wherein the baffle plate forms an enclosure space, and at least a portion of the magnetic circuit structure is located in the enclosure space.

26. The magnetic latching relay according to claim 25, characterized in that: The baffle plate is provided with guide grooves extending along the second direction on opposite sides of the third direction; The clamping plate is provided with a guide protrusion on the side facing away from the other clamping plate, and the guide protrusion is placed in the guide sliding groove.

27. The magnetic latching relay according to claim 26, characterized in that: The clamping plate is provided with a clamping protrusion, which protrudes from the surface of the guide protrusion in the first direction and is clamped on the inner wall surface of the guide sliding groove.

28. The magnetic latching relay according to claim 26, characterized in that: The clamping plates are symmetrically arranged about the guide protrusion in the first direction.

29. The magnetic latching relay according to claim 26, characterized in that: The seat body is provided with a placement cavity, and at least a portion of the contact assembly is placed in the placement cavity. A limiting groove is provided between the seat body forming the placement cavity and the enclosure plate, and the limiting groove extends in the second direction.

30. The magnetic latching relay according to claim 11, characterized in that: The yoke assembly includes a first contact portion, a second contact portion and a third contact portion. Along the second direction, the first contact portion and the second contact portion are arranged opposite to each other, and the third contact portion is placed between the first contact portion and the second contact portion; the first contact portion is used to contact and cooperate with one end of the armature to form a first snapping surface, and the second contact portion is used to contact and cooperate with the other end of the armature to form a second snapping surface, and the second snapping surface is arranged coplanar with the first snapping surface; the magnetic steel is fixed to the third contact portion.

31. The magnetic latching relay according to claim 30, characterized in that: Along the second direction, the engaging portion is disposed between the first contact portion and the magnetic steel; and along the first direction, there is a gap between the engaging portion and the third contact portion.

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