Connecting structure between armature and push card and magnetic latching electromagnetic relay

Abstract

The application discloses a connecting structure between an armature and a push card and a magnetic latching electromagnetic relay thereof. The connecting structure between the armature and the push card comprises an armature, a push card and a compression spring. The push card is provided with a first clamping groove, and the head of the armature is adapted in the first clamping groove of the push card. One part of the compression spring is fixed on the armature, and the other part of the compression spring is matched in the first clamping groove of the push card. The compression spring further comprises a wing extending outward from the part of the compression spring and elastically deformed in the thickness direction of the compression spring relative to the part of the compression spring, and the tail end of the wing is adapted to the push card. The connecting structure between the armature and the push card is further provided with a convex part. The application can solve the anti-sticking ability of the magnetic latching relay in the capacitive load application, realize the non-rebound arc situation of the spring in the contact closing moment, reduce the ablation of the silver layer of the contact, and avoid the product failure caused by the silver layer sticking when the contact is to be disconnected.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a connection structure between an armature and a pusher, and a magnetic latching electromagnetic relay thereof. Background Technology

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits and is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching. A magnetic latching relay is a type of relay and also an automatic switch. Like other electromagnetic relays, it automatically connects and disconnects circuits. However, unlike other electromagnetic relays, the normally closed or normally open state of a magnetic latching relay depends entirely on the action of a permanent magnet. Its switching state is triggered by a pulse signal of a certain width. Existing magnetic latching relays typically include a base, a magnetic circuit section, a contact section, and a pushing section. The magnetic circuit section and the contact section are mounted on the base, and the pushing section connects the magnetic circuit section and the contact section. When the magnetic circuit section is working, the pushing section actuates the moving spring section of the contact section, causing the moving contact of the moving spring section to contact or separate from the stationary contact of the stationary spring section. The existing connection structure between the armature and the push card is prone to problems such as poor relay return, insufficient breaking force, spring vibration, and contact sticking. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a connection structure between the armature and the push card and its magnetic latching electromagnetic relay. This can solve the problem of the anti-adhesion capability of the magnetic latching relay in capacitive load applications, and achieve no springback arcing of the spring at the moment of contact when the contact is closed, thereby reducing the burning of the silver layer of the contact. When the contact needs to be opened, it can be cleanly disconnected, avoiding product failure caused by silver layer adhesion.

[0004] The technical solution adopted by this invention to solve its technical problem is: a connection structure between an armature and a pusher, including an armature, a pusher, and a compression spring; the pusher has a first slot that is open at both ends, and the head of the armature is adapted to the first slot of the pusher to push and pull the pusher when the armature moves; a part of the compression spring is fixed to the armature, and the other part of the compression spring is engaged in the first slot of the pusher; the compression spring also includes a wing extending outward from a part of the compression spring and elastically deformable relative to a part of the compression spring in the thickness direction of the compression spring, the end of the wing is adapted to the pusher and engages with the pusher in the thickness direction of the compression spring so that when the armature moves and the moving and stationary contacts move in the closing direction, the wing contacts the pusher first, so as to achieve flexible closure; a protrusion is also provided between the armature and the first slot of the pusher so that when the armature moves and the moving and stationary contacts move in the breaking direction, the armature and the pusher directly contact each other through the protrusion to achieve rigid breaking.

[0005] Another portion of the compression spring is elastically fitted into the first slot of the push card to limit the relative movement of the compression spring and the push card in the direction corresponding to the thickness of the push card.

[0006] The side of the first slot of the push card is also connected to a second slot with an opening facing downwards, and the end of the wing is adapted to the second slot of the push card.

[0007] The compression spring is fixed to one side of the armature; the wing of the compression spring extends outward in the width direction of the armature at the corresponding position of the armature and cooperates with the second slot of the push card.

[0008] In the second slot of the push card, a first protrusion is provided on the side wall facing the wing of the compression spring. The wing of the compression spring pushes the push card to move in the closing direction of the moving and stationary contacts through the first protrusion.

[0009] The compression spring cooperates with the first slot of the push card to form a first line of action, and the wing of the compression spring cooperates with the second slot of the push card to form a second line of action. The first line of action and the second line of action are staggered relative to the length direction of the push card.

[0010] In the first slot of the push card, a third slot is also provided in the slot wall on one side of the armature that fixes the compression spring, which is distributed in a horizontal direction. Another part of the compression spring is elastically fitted in the third slot of the push card to limit the movement of the compression spring and the push card in the direction corresponding to the thickness of the push card.

[0011] The third slot is formed by at least two second protrusions in one side wall of the first slot of the push card; another part of the compression spring is configured to engage with the protrusion of the third slot formed by the at least two second protrusions.

[0012] The first slot of the push card has three second protrusions on one side of the slot wall, arranged in a triangular pattern; the protrusion of the compression spring is fitted between the three triangularly arranged second protrusions.

[0013] The protrusion between the armature and the push card has the same structure as the second protrusion in one side of the groove wall of the first slot of the push card.

[0014] In the armature, the width sides of the armature portion located in the first slot of the push card are in clearance fit with the corresponding slot edges of the first slot of the push card, so as to restrict the relative movement of the armature and the push card in the width direction of the push card.

[0015] The compression spring includes a main body and the winglets; the main body is one part of the compression spring and another part of the compression spring; the peripheral contours of the main body and the winglets are generally rectangular; the main body is located in the middle and the winglets are located on both sides; a single-end through slit is provided between the main body and the winglets so that the winglets can elastically deform relative to the main body of the compression spring in the thickness direction of the compression spring.

[0016] A portion of the compression spring in the main body is fixed to the armature by riveting; another portion of the compression spring in the main body is bent into a U-shape to form the protrusion, and the arc surface formed by bending into the U-shape can effectively prevent scraping when the protrusion is inserted into the third slot.

[0017] The upper part of the end of the wing is also provided with an arc-shaped bend to effectively prevent scraping when the wing is inserted into the second slot of the push card from bottom to top.

[0018] A magnetic latching electromagnetic relay includes a connection structure between the armature and the pusher.

[0019] A magnetic latching electromagnetic relay includes a magnetic circuit portion, a base, a contact portion, and a connection structure between the armature and a pusher; the magnetic circuit portion and the contact portion are respectively mounted on the base; a first slot is provided at one end of the pusher; a fourth slot is provided at the other end of the pusher; the contact portion includes a moving spring and a stationary spring, and the head of the moving spring is engaged in the fourth slot of the pusher.

[0020] The magnetic circuit includes a coil frame, enameled wire wound around the coil frame, and an L-shaped iron core inserted into the iron core hole of the coil frame. The armature is L-shaped, and the coil frame is fitted to the base with the iron core hole in a vertical direction. The armature is assembled on the outward side of the coil frame and is fitted to the L-shaped iron core. The moving spring and the stationary spring are respectively fitted to the other side of the coil frame opposite to the armature, with the moving spring being inward and the stationary spring being outward.

[0021] The coil frame and the base are an integral structure. The coil frame has an upper flange and a lower flange, and the lower flange is integrated with the base. The coil frame also has a middle flange. The middle part of the armature is rotatably mounted on the middle flange of the coil frame. The middle flange of the coil frame is also equipped with a magnet.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention employs a method in which a portion of a compression spring is fixed to the armature, and another portion of the compression spring is elastically engaged in the first slot of the push card to limit the relative movement of the compression spring and the push card in the thickness direction corresponding to the push card. The compression spring also includes a wing extending outward from a portion of the compression spring and capable of elastic deformation relative to a portion of the compression spring in the thickness direction of the compression spring. The end of the wing is adapted to the push card, and when it cooperates with the push card in the thickness direction of the compression spring, the wing contacts the push card preferentially before the armature when the armature moves and causes the moving and stationary contacts to move in the closing direction, thereby achieving flexible closure. A protrusion is also provided between the armature and the first slot of the push card so that when the armature moves and causes the moving and stationary contacts to move in the breaking direction, the armature and the push card directly contact each other through the protrusion to achieve rigid breaking. In this structure, as the contact moves from open to closed, the spring's wing begins to deform (storing the energy of the magnetic circuit system in the spring to form a certain elastic potential energy). At this time, the contact system gradually enters a contact state, and after contact, it enters an overtravel phase. The deformation of the wing generates a force opposite to the contact closing direction. The magnitude of this force balances the pressure required for contact closure. When the contact closing process causes rebound or jitter due to acceleration, the reaction force of the spring's wing can effectively suppress this. When the contact moves from closed to open, the spring's wing returns to its initial state and does not function. The rigid armature, by pushing the second convex bulge of the locking mechanism, pulls the moving spring, achieving the effect of rigid contact separation.

[0024] 2. This invention employs a method where another portion of the compression spring's main body is bent into a U-shape to form the protruding strip. Three second protrusions are arranged in a triangular pattern on one side of the first slot of the push card. The protruding strip of the compression spring is then fitted between these three triangularly arranged second protrusions. This structure allows the second protrusions in the first slot of the push card to both form a third slot for engaging the spring's protruding strip and serve as the direct contact part between the armature and the push card for rigid separation. This simplifies the manufacturing process and reduces manufacturing costs.

[0025] 3. This invention employs a method where one part of the compression spring's main body is bent into a U-shape to form the convex strip, and the upper part of the wing's end is also provided with an arc-shaped bend. This structure of the invention effectively prevents scraping when the convex strip is engaged in the third slot by utilizing the arc surface formed by the U-shape, and simultaneously, effectively prevents scraping when the wing is inserted into the second slot of the push card from bottom to top by utilizing the arc shape of the wing's end.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the connection structure between the armature and the push card and the magnetic latching electromagnetic relay of the present invention are not limited to the embodiments. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the connection structure between the armature and the pusher of the present invention;

[0028] Figure 2 This is a front view of the connection structure between the armature and the pusher of the present invention;

[0029] Figure 3 This is a top view of the connection structure between the armature and the pusher of the present invention;

[0030] Figure 4 It is along Figure 3 A sectional view of line AA in the diagram;

[0031] Figure 5 This is a schematic diagram of the assembly structure of the compression spring and the armature of the connection structure between the armature and the pusher of the present invention;

[0032] Figure 6 This is a front view of the assembly structure of the compression spring and the armature of the connection structure between the armature and the pusher of the present invention;

[0033] Figure 7 This is a side view of the assembly structure of the compression spring and the armature of the connection structure between the armature and the pusher of the present invention;

[0034] Figure 8This is a rear view of the assembly structure of the compression spring and the armature of the connection structure between the armature and the pusher of the present invention;

[0035] Figure 9 This is a three-dimensional structural diagram of the compression spring in the connection structure between the armature and the pusher of the present invention;

[0036] Figure 10 This is a three-dimensional structural diagram of the compression spring of the connection structure between the armature and the pusher of the present invention (rotated at an angle);

[0037] Figure 11 This is a front view of the compression spring of the connection structure between the armature and the pusher of the present invention;

[0038] Figure 12 This is a side view of the compression spring of the connection structure between the armature and the pusher of the present invention;

[0039] Figure 13 This is a rear view of the compression spring of the connection structure between the armature and the pusher of the present invention;

[0040] Figure 14 This is a three-dimensional structural diagram of the push card, which is the connection structure between the armature and the push card of the present invention;

[0041] Figure 15 This is a top view of the pusher card, which is the connection structure between the armature and the pusher card of the present invention;

[0042] Figure 16 This is a three-dimensional structural schematic diagram of the magnetic latching electromagnetic relay of the present invention;

[0043] Figure 17 This is a three-dimensional structural schematic diagram of the magnetic latching electromagnetic relay of the present invention (rotated at an angle).

[0044] Figure 18 This is a front view of the magnetic latching electromagnetic relay of the present invention;

[0045] Figure 19 This is a three-dimensional structural diagram of the base and coil frame of the magnetic latching electromagnetic relay of the present invention;

[0046] Figure 20 This is a three-dimensional structural diagram of the base and coil frame of the magnetic latching electromagnetic relay of the present invention (rotated at an angle).

[0047] Figure 21 This is a schematic diagram of the contact closed state of the magnetic latching electromagnetic relay of the present invention;

[0048] Figure 22 This is a schematic diagram of the contact open state of the magnetic latching electromagnetic relay of the present invention. Detailed Implementation

[0049] Example

[0050] See Figures 1 to 15 As shown, a connection structure between an armature and a pusher clip according to the present invention includes an armature 1, a pusher clip 2, and a compression spring 3; the pusher clip 2 has a first slot 21 that is open at both ends, and the head of the armature 1 is adapted to the first slot 21 of the pusher clip 2 to push and pull the pusher clip 2 when the armature 1 is actuated; a portion 31 of the compression spring 3 is fixed to the armature 1, and another portion 32 of the compression spring 3 is elastically engaged in the first slot 21 of the pusher clip 2 to limit the relative movement of the compression spring 3 and the pusher clip 2 in the direction corresponding to the thickness of the pusher clip 2; the compression spring 3 also includes a portion 31 extending outward from which a portion of the compression spring 3 can... The wing 33, which elastically deforms in the thickness direction of the compression spring relative to a portion 31 of the compression spring, is adapted to the push card 2 at its end 331. It engages with the push card 2 in the thickness direction of the compression spring so that when the armature 1 moves and causes the moving and stationary contacts to move in the closing direction, the wing 33 contacts the push card 2 prior to the armature 1 to achieve flexible closure. A protrusion 22 is also provided between the armature 1 and the first slot 21 of the push card 2 so that when the armature 1 moves and causes the moving and stationary contacts to move in the breaking direction, the armature 1 and the push card 2 directly contact each other through the protrusion 22 to achieve rigid breaking.

[0051] In this embodiment, the side of the first slot 21 of the push card 2 is also connected to a second slot 23 with an opening facing downward, and the end 331 of the wing 33 is adapted to the second slot 23 of the push card 2.

[0052] In this embodiment, the compression spring 3 is fixed to one side of the armature 1; the wing 33 of the compression spring 3 extends outward in the width direction of the armature at the corresponding position of the armature and cooperates with the second slot 23 of the push card 2.

[0053] In the second slot 23 of the push card 2, a first protrusion 231 is provided on the side of the slot wall that cooperates with the wing of the compression spring. The wing 33 of the compression spring pushes the push card 2 to move in the closing direction of the moving and stationary contacts through the first protrusion 231.

[0054] The compression spring cooperates with the first slot of the push card to form a first line of action, and the wing of the compression spring cooperates with the second slot of the push card to form a second line of action. The first line of action and the second line of action are staggered relative to the length direction of the push card.

[0055] In this embodiment, in the first slot 21 of the push card, a third slot 24 is also provided in the slot wall on one side corresponding to the fixed side of the armature 1 and the compression spring 3. The other part 32 of the compression spring 3 is elastically engaged in the third slot 24 of the push card to limit the movement of the compression spring 3 and the push card 2 in the direction corresponding to the thickness of the push card 2.

[0056] In this embodiment, the third card slot 24 is formed by at least two second protrusions in one side wall of the first card slot 21 of the push card; the other part 32 of the compression spring 3 is configured as a protrusion that engages with the third card slot formed by the at least two second protrusions.

[0057] In this embodiment, there are three second protrusions in one side of the groove wall of the first slot of the push card 2, which are arranged in a triangular shape; the protrusion 331 of the compression spring 3 is fitted between the three triangularly arranged second protrusions.

[0058] In this embodiment, the protrusion 22 between the armature and the push card has the same structure as the second protrusion in one side of the groove wall of the first slot of the push card, and the protrusion 22 is the second protrusion.

[0059] In this embodiment, the armature 1 has a width portion that is located in the first slot 21 of the push card, and the two sides of the width portion of the armature portion are in clearance fit with the corresponding slot edge of the first slot 21 of the push card, so as to restrict the relative movement of the armature 1 and the push card 2 in the width direction of the push card.

[0060] In this embodiment, the compression spring 3 includes a main body portion 34 and a wing 33; the main body portion 34 is a part 31 and another part 32 of the compression spring; the peripheral contours of the main body portion 34 and the wing 33 are generally rectangular; the main body portion 34 is located in the middle, and the wing 33 is located on both sides; a single-end through slot 35 is provided between the main body portion 34 and the wing 33 so that the wing 33 can elastically deform relative to the main body portion 34 of the compression spring in the thickness direction of the compression spring.

[0061] In this embodiment, a portion 31 of the compression spring of the main body 34 is fixed to the armature 1 by riveting; the other portion 32 of the compression spring of the main body is bent into a U-shape to form the protrusion, and the arc surface formed by bending into the U-shape can effectively prevent scraping when the protrusion 32 is inserted into the third slot 24.

[0062] In this embodiment, the upper part of the end of the wing 33 is also provided with an arc-shaped bending portion 332, so as to effectively prevent scraping when the wing 33 is inserted into the second slot 23 of the push card from bottom to top.

[0063] When armature 1 and push card 2 are assembled: the single second protrusion 22 at the head cooperates with the U-shaped metal protrusion 32 of the compression spring to limit its movement and prevent it from coming off upwards; the two second protrusions 22 at the bottom provide support and prevent the push card 2 from falling downwards; the characteristic structure of the three second protrusions effectively avoids the push card from wobbling in the thickness direction, resulting in high stability. Assembly instructions: The compression spring is riveted to the armature. At this time, the U-shaped feature of the compression spring, i.e., the protrusion 32, has no deformation capability (the U-shaped bend is formed by bending, and the bending surface is smooth and burr-free). By deforming the flaps 33 on both sides of the compression spring, the U-shaped feature is fitted with the push card with a clearance, effectively limiting its movement. After this, the flaps 33 of the compression spring return to their initial unstressed state.

[0064] See Figures 1 to 22 As shown, a magnetic latching electromagnetic relay of the present invention includes a magnetic circuit portion 4, a base 5, a contact portion 6, and a connection structure between the armature 1 and the push card 2 as described above; the magnetic circuit portion 4 and the contact portion 6 are respectively mounted on the base 5; the first card slot 21 is provided at one end of the push card 2; the other end of the push card 2 is provided with a fourth card slot 25; the contact portion includes a moving spring 61 and a stationary spring 62, and the head of the moving spring 61 is engaged in the fourth card slot 25 of the push card 2.

[0065] In this embodiment, the magnetic circuit part 4 includes a coil frame 41, an enameled wire 42 wound around the coil frame, and an L-shaped iron core 43 inserted into the iron core hole of the coil frame. The armature 1 is L-shaped, and the coil frame 41 is adapted to the base 5 with the iron core hole 411 in a vertical direction. The armature 1 is assembled on the outward side of the coil frame 41 and adapted to the L-shaped iron core 43. The moving spring 61 and the stationary spring 62 are respectively adapted to the other side of the coil frame 41 opposite to the armature 1, with the moving spring 61 being inward and the stationary spring 62 being outward.

[0066] In this embodiment, the coil frame 41 and the base 5 are an integral structure. The coil frame 41 has an upper flange 412 and a lower flange, and the lower flange is integrally connected to the base 5. The coil frame 41 also has a middle flange 413. The middle part of the armature 1 is rotatably mounted on the middle flange of the coil frame 41. The middle flange 413 of the coil frame 41 is also equipped with a magnet 7.

[0067] This invention discloses a connection structure between an armature and a push card, and its magnetic latching electromagnetic relay. When the contact is in the open state, the two side wings 33 of the spring 3 are not under force. When the contact moves from open to closed, the two side wings 33 of the spring contact the second slot of the push card 2 and the slot wall of the second slot. The wings 33 begin to deform (storing the energy of the magnetic circuit system in the spring to form a certain elastic potential energy), and at this time, the contact system gradually enters the contact state, and after contact, it enters the overtravel stage. The deformation of the wings 33 generates a force opposite to the contact closing direction. The magnitude of this force is balanced with the contact closing pressure. When the contact closing process produces rebound and jitter due to motion acceleration, the reaction force of the wings 33 of the spring 3 can effectively suppress it. When the contact changes from the closed state to the open state, the spring parts do not function except to provide a reaction force in the initial stage of disconnection (the wings 33 of the spring 3 return to the initial state). The rigid armature 1 pushes the second protrusion 22 of the triangular shape of the clip 2, which in turn pulls the moving spring 61, achieving the effect of contact disconnection. (Principle explanation: During the disconnection process of the relay contacts, it is not advisable to directly apply the energy of the magnetic circuit system to the contact part to quickly and forcefully disconnect the contact system. First, part of the energy of the magnetic circuit system is converted into the elastic potential energy of the compression spring and the moving spring. When it accumulates to a level sufficient to overcome the adhesive force of the contact system, the contact system is pulled apart, thus skipping the unfavorable buffer zone during the disconnection process.)

[0068] The present invention discloses a connection structure between an armature and a pusher 2 and a magnetically latched electromagnetic relay thereof. A portion 31 of a compression spring 3 is fixed to the armature 1, and another portion 32 of the compression spring is elastically engaged in a first slot of the pusher 2 to limit the relative movement of the compression spring 3 and the pusher 2 in the thickness direction corresponding to the pusher 2. The compression spring 3 further includes a wing 33 extending outward from the portion 31 of the compression spring and elastically deformable relative to the portion 31 of the compression spring in the thickness direction of the compression spring. The end 331 of the 33 is adapted to the push card 2 and cooperates with the push card 2 in the thickness direction of the compression spring so that when the armature 1 moves and the moving and stationary contacts move in the closing direction, the wing 33 contacts the push card 2 first before the armature 1 to achieve flexible closure; a protrusion 22 is also provided between the armature 1 and the first slot 21 of the push card 2 so that when the armature moves and the moving and stationary contacts move in the breaking direction, the armature 1 and the push card 2 directly contact each other through the protrusion to achieve rigid breaking. In this structure of the present invention, when the contact point moves from the open to the closed direction, the wing 33 of the compression spring 3 begins to deform (storing the energy of the magnetic circuit system in the compression spring to form a certain elastic potential energy), and at this time, the contact point of the contact system gradually enters the contact state, and after contact, it enters the overtravel stage; the deformation of the wing 33 generates a force opposite to the contact point closing direction, and the magnitude of this force is balanced with the pressure of the contact point closing. When the contact point closes due to the acceleration of motion, the rebound and jitter phenomena occur, and the reaction force of the wing of the compression spring can be effectively suppressed. When the contact point moves from the closed state to the open state, the wing 33 of the compression spring 3 returns to its initial state and does not exert any effect. The rigid armature 1 pushes the second protrusion of the card in a triangular shape, pulling the moving spring, achieving the effect of rigidly breaking the contact point.

[0069] The present invention discloses a connection structure between an armature and a push card, and a magnetically latching electromagnetic relay thereof. This structure involves bending another portion 32 of the compression spring 3's main body 34 into a U-shape to form the convex strip. Three second protrusions 22 are arranged in a triangular pattern on one side of the first slot 21 of the push card 2. The convex strip 32 of the compression spring is then fitted between these three triangularly arranged second protrusions 22. In this structure, the second protrusions 22 in one side of the first slot of the push card both form a third slot 24 to engage the spring's protrusions 32 and serve as a direct contact point between the armature 1 and the push card 2 for rigid separation, simplifying the manufacturing process and reducing manufacturing costs.

[0070] The present invention discloses a connection structure between an armature and a push card, and a magnetically latching electromagnetic relay thereof. This structure employs a U-shaped bending of another portion 32 of the main body 34 of the compression spring 3 to form the protruding strip, and an arc-shaped bend 332 at the end of the wing 33. This structure effectively prevents scraping when the protruding strip 32 is engaged in the third slot 24 by utilizing the arc surface formed by the U-shaped bending, and also effectively prevents scraping when the wing 33 is inserted into the second slot of the push card from bottom to top by utilizing the arc shape at the end of the wing 33.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A connection structure between an armature and a pusher, comprising an armature, a pusher, and a compression spring; the pusher has a first slot that is open at both ends, and the head of the armature is adapted to fit into the first slot of the pusher to push and pull the pusher when the armature is actuated; a portion of the compression spring is fixed to the armature, and the other portion of the compression spring is engaged in the first slot of the pusher; characterized in that: The compression spring further includes a wing extending outward from a portion of the compression spring and capable of elastic deformation relative to a portion of the compression spring in the thickness direction of the compression spring. The end of the wing is adapted to the push card and cooperates with the push card in the thickness direction of the compression spring so that when the armature moves and the moving and stationary contacts move in the closing direction, the wing contacts the push card first, prior to the armature, to achieve flexible closure. A protrusion is also provided between the armature and the first slot of the push card so that when the armature moves and the moving and stationary contacts move in the breaking direction, the armature and the push card directly contact each other through the protrusion to achieve rigid breaking.

2. The connection structure between the armature and the pusher according to claim 1, characterized in that: Another portion of the compression spring is elastically fitted into the first slot of the push card to limit the relative movement of the compression spring and the push card in the direction corresponding to the thickness of the push card.

3. The connection structure between the armature and the pusher according to claim 2, characterized in that: The side of the first slot of the push card is also connected to a second slot with an opening facing downwards, and the end of the wing is adapted to the second slot of the push card.

4. The connection structure between the armature and the pusher according to claim 3, characterized in that: The compression spring is fixed to one side of the armature; the wing of the compression spring extends outward in the width direction of the armature at the corresponding position of the armature and cooperates with the second slot of the push card.

5. The connection structure between the armature and the pusher according to claim 4, characterized in that: In the second slot of the push card, a first protrusion is provided on the side wall facing the wing of the compression spring. The wing of the compression spring pushes the push card to move in the closing direction of the moving and stationary contacts through the first protrusion.

6. The connection structure between the armature and the pusher according to claim 4 or 5, characterized in that: The compression spring cooperates with the first slot of the push card to form a first line of action, and the wing of the compression spring cooperates with the second slot of the push card to form a second line of action. The first line of action and the second line of action are staggered relative to the length direction of the push card.

7. The connection structure between the armature and the pusher according to claim 1, characterized in that: In the first slot of the push card, a third slot is also provided in the slot wall on one side of the armature that fixes the compression spring, which is distributed in a horizontal direction. Another part of the compression spring is elastically fitted in the third slot of the push card to limit the movement of the compression spring and the push card in the direction corresponding to the thickness of the push card.

8. The connection structure between the armature and the pusher according to claim 7, characterized in that: The third slot is formed by at least two second protrusions in one side wall of the first slot of the push card; another part of the compression spring is configured to engage with the protrusion of the third slot formed by the at least two second protrusions.

9. The connection structure between the armature and the pusher according to claim 6, characterized in that: The first slot of the push card has three second protrusions on one side of the slot wall, arranged in a triangular pattern; the protrusion of the compression spring is fitted between the three triangularly arranged second protrusions.

10. The connection structure between the armature and the pusher according to claim 8 or 9, characterized in that: The protrusion between the armature and the push card has the same structure as the second protrusion in one side of the groove wall of the first slot of the push card.

11. The connection structure between the armature and the pusher according to claim 1, characterized in that: In the armature, the width sides of the armature portion located in the first slot of the push card are in clearance fit with the corresponding slot edges of the first slot of the push card, so as to restrict the relative movement of the armature and the push card in the width direction of the push card.

12. The connection structure between the armature and the pusher according to claim 8, characterized in that: The compression spring includes a main body and the winglets; the main body is one part of the compression spring and another part of the compression spring; the peripheral contours of the main body and the winglets are generally rectangular; the main body is located in the middle and the winglets are located on both sides; a single-end through slit is provided between the main body and the winglets so that the winglets can elastically deform relative to the main body of the compression spring in the thickness direction of the compression spring.

13. The connection structure between the armature and the pusher according to claim 12, characterized in that: A portion of the compression spring in the main body is fixed to the armature by riveting; another portion of the compression spring in the main body is bent into a U-shape to form the protrusion, and the arc surface formed by bending into the U-shape can effectively prevent scraping when the protrusion is inserted into the third slot.

14. The connection structure between the armature and the pusher according to claim 13, characterized in that: The upper part of the end of the wing is also provided with an arc-shaped bend to effectively prevent scraping when the wing is inserted into the second slot of the push card from bottom to top.

15. A magnetic latching electromagnetic relay, characterized in that: Includes the connection structure between the armature and the pusher as described in any one of claims 1 to 14.

16. A magnetic latching electromagnetic relay, characterized in that: It includes a magnetic circuit portion, a base, a contact portion, and a connection structure between the armature and the push card as described in any one of claims 1 to 14; the magnetic circuit portion and the contact portion are respectively mounted on the base; the first card slot is provided at one end of the push card; the other end of the push card is provided with a fourth card slot; the contact portion includes a moving spring and a stationary spring, and the head of the moving spring is engaged in the fourth card slot of the push card.

17. The magnetic latching electromagnetic relay according to claim 16, characterized in that: The magnetic circuit includes a coil frame, enameled wire wound around the coil frame, and an L-shaped iron core inserted into the iron core hole of the coil frame. The armature is L-shaped, and the coil frame is fitted to the base with the iron core hole in a vertical direction. The armature is assembled on the outward side of the coil frame and is fitted to the L-shaped iron core. The moving spring and the stationary spring are respectively fitted to the other side of the coil frame opposite to the armature, with the moving spring being inward and the stationary spring being outward.

18. The magnetic latching electromagnetic relay according to claim 17, characterized in that: The coil frame and the base are an integral structure. The coil frame has an upper flange and a lower flange, and the lower flange is integrated with the base. The coil frame also has a middle flange. The middle part of the armature is rotatably mounted on the middle flange of the coil frame. The middle flange of the coil frame is also equipped with a magnet.

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