A push structure meeting flexible card mounting and stable positioning and a magnetic holding electromagnetic relay thereof

Abstract

The application discloses a pushing structure meeting flexible mounting and stable fixing of a position and a magnetic holding electromagnetic relay, and the pushing structure comprises an armature, a pushing card and a moving spring piece; the length of the pushing card is provided with a first clamping groove and a second clamping groove which are used for accommodating the head of the armature and the head of the moving spring piece and are penetrated from top to bottom; the head of the moving spring piece is provided with an upper hook and a lower hook which are respectively matched with the upper and lower edges of the second clamping groove of the pushing card so as to limit the relative displacement of the pushing card in the thickness direction of the pushing card; the head of the moving spring piece is further provided with a first convex clamping head; the head of the armature is further provided with a compression spring which is provided with an elastic clamping head. In the process of mounting the pushing card into the armature and the moving spring piece from top to bottom, the application can realize flexible mounting, realize overall positioning and limiting of the matching section, has the characteristics of good assembly, few action assembly elements, flexible compression with elastic deformation and no scratch during assembly.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a push structure that satisfies flexible mounting and stable positioning, and its magnetic latching electromagnetic relay. 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 pushing structure mainly includes a pushing card and a connecting structure between the pushing card and the armature and the moving spring. The existing pushing card is usually installed into the armature and the moving spring from top to bottom, which has the following main drawbacks:

[0003] First, the armature and moving spring are metal parts, while the pusher is a plastic part, which makes it easy to generate scrapes during the assembly process of the pusher with the armature and moving spring.

[0004] Secondly, after the moving spring is inserted into the push card, since there is no limit between the moving spring and the push card in the width and thickness directions of the push card, there is a problem that the head of the moving spring will slide and scrape against the limit groove of the push card during the push-pull process.

[0005] Third, existing technologies typically use the hook on the head of the moving spring to hook onto the upper edge of the push card slot to achieve the engagement between the moving spring and the push card. During the pushing and pulling process of the push card, the right-angled edge of the hook of the moving spring is prone to scratching the plastic surface of the push card. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a push structure and its magnetic holding electromagnetic relay that meet the requirements of flexible mounting and stable positioning. Through structural improvement, the push card can achieve flexible mounting during the process of being inserted into the armature and moving spring from top to bottom, and achieve comprehensive positioning and limiting of the mating section. It has the characteristics of good assembly, fewer moving assembly elements, flexible pressing with elastic deformation, and no scraping during assembly.

[0007] The technical solution adopted by this invention to solve its technical problem is: a push structure that satisfies flexible mounting and stable positioning, including an armature, a push card, and a movable spring; the push card has a first and a second slot, which are open at both ends to accommodate the head of the armature and the head of the movable spring, respectively; the head of the movable spring has an upper hook and a lower hook that are respectively adapted to the upper and lower edges of the second slot of the push card to limit the relative displacement of the push card in the thickness direction of the push card; the head of the movable spring also has a first protrusion, which provides positioning of the movable spring in the width direction of the push card and limits the relative displacement of the movable spring and the push card in the width direction of the push card when the push card is inserted into the head of the movable spring from top to bottom; the head of the armature is also equipped with a compression spring, which has an elastic locking head, which locks in the first slot of the push card when the push card is inserted into the head of the armature from top to bottom, thereby limiting the relative displacement of the armature and the push card in the thickness direction of the push card.

[0008] The first protrusion of the moving spring is formed by striking one side of the moving spring body to create a depression and forming a protrusion on the other side.

[0009] The second slot of the push card has a protrusion along its lower edge, and the protrusion has a semi-enclosed groove. The first protrusion of the movable spring is adapted to the semi-enclosed groove along the lower edge of the second slot of the push card to limit the relative displacement between the movable spring and the push card in the width direction of the push card.

[0010] The upper hook and lower hook of the movable spring face one side of the movable spring, and the first protrusion of the movable spring protrudes on the other side of the movable spring. A small round pouch is also provided on the side of the upper groove edge of the second slot of the push card corresponding to the upper hook of the movable spring. When the movable spring is inserted into the second slot of the push card and the upper hook of the movable spring is adapted to the upper groove edge of the second slot of the push card, the small round pouch on the upper groove edge of the second slot of the push card abuts against the lower side of the upper hook of the movable spring.

[0011] The movable spring has one upper hook located in the middle of its width, and two lower hooks located on either side of its width. The upper and lower hooks of the movable spring are arranged in a triangular pattern and are respectively adapted to the upper and lower groove edges of the second slot of the push card.

[0012] The lower part of the compression spring is fixed to the armature, and the top of the compression spring is bent into a U-shape to form the elastic locking head of the compression spring; a third locking groove is provided in one side of the groove wall of the first locking groove of the push card, which is distributed laterally, and the elastic locking head of the compression spring is inserted into the third locking groove to limit the relative displacement between the armature and the push card in the thickness direction of the push card.

[0013] The third slot in the first slot of the push card is formed by two rows of second protrusions extending from one side wall of the first slot.

[0014] Three second protrusions extend from one side of the first slot. The upper row has one second protrusion in the middle, and the lower row has two second protrusions on both sides. The three second protrusions are distributed in a triangular shape.

[0015] The compression spring further includes a wing extending outward from the main body of the compression spring and capable of elastic deformation in the thickness direction relative to the main body of the compression spring. The end of the wing is adapted to the fourth slot of the push card and cooperates with the fourth slot in the thickness direction so that when the armature is actuated and the moving and stationary contacts move in the closing direction, the wing contacts the push card first, so as to achieve flexible closure. The fourth slot is located on the side of the first slot and communicates with the first slot.

[0016] 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 fourth slot of the push card from bottom to top.

[0017] When the armature moves and causes the pusher to move in the direction of separating the moving and stationary contacts, the armature comes into direct contact with the second protrusion in the first slot of the pusher to achieve rigid separation.

[0018] A magnetic latching electromagnetic relay includes a push structure that satisfies flexible mounting and stable positioning.

[0019] A magnetic latching electromagnetic relay includes a magnetic circuit portion, a base, a stationary spring, and a push structure as described above that satisfies flexible mounting and stable positioning; the magnetic circuit portion and the moving and stationary springs are respectively mounted on the base; the moving and stationary springs are located in compatible positions.

[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 compression spring at the head of the armature, with an elastic locking head. When the push card is inserted into the head of the armature from top to bottom, the elastic locking head of the compression spring engages within the first slot of the push card, limiting the relative displacement between the armature and the push card in the thickness direction of the push card. The head of the movable spring also has a first protrusion. When the push card is inserted into the head of the movable spring from top to bottom, the first protrusion provides positioning of the movable spring in the width direction of the push card and limits the relative displacement between the movable spring and the push card in the width direction of the push card. This structure of the invention enables flexible clamping during the insertion of the push card into the armature and movable spring from top to bottom, achieving comprehensive positioning and limiting of the mating section. It features easy assembly, minimal assembly elements, flexible pressing with elastic deformation, and no scraping during assembly.

[0024] 2. In this invention, the first protrusion of the movable spring is formed by striking the movable spring body into a depression on one side and forming a protrusion on the other side; and the lower groove edge of the second slot of the push card has a downward-facing protrusion with a semi-enclosed groove; the first protrusion of the movable spring is adapted to fit into the semi-enclosed groove on the lower groove edge of the second slot of the push card. This structure of the invention utilizes the smooth, burr-free perforation of the movable spring head, achieving the limiting width direction of the push card through the cylindrical straight section; this feature effectively avoids the problem of the movable spring head sliding and scraping against the limiting groove of the push card during the push-pull process.

[0025] 3. This invention incorporates a small round pouch on one side of the upper edge of the second slot of the push card, corresponding to the upper hook of the movable spring. When the movable spring is inserted into the second slot of the push card, and the upper hook of the movable spring is fitted to the upper edge of the second slot, the small round pouch on the upper edge of the second slot of the push card abuts against the underside of the upper hook of the movable spring. This structure of the invention, utilizing the small round pouch of the push card, effectively limits the bending angle to greater than 90° during the insertion process when the movable spring angle is unstable. This solves the problem of plastic debris being generated when the right-angled surface of the movable spring scrapes against the plastic surface during the assembly of the movable spring head hook, which occurs when the insertion angle becomes smaller. Simultaneously, the small round pouch also helps to prevent the right-angled edge of the movable spring head hook from scraping against the plastic surface of the push card during relay operation.

[0026] 4. This invention employs a U-shaped bending of the top of the compression spring to form its elastic locking head; and three second protrusions extending from one side wall of the first locking groove are arranged in a triangular pattern to serve as a third locking groove that engages with the elastic locking head. This structure allows the three second protrusions in one side wall of the first locking groove of the push card to both form a third locking groove for engaging the elastic locking head of the compression spring and serve as a direct contact part between the armature and the push card for rigid separation, simplifying the manufacturing process and reducing manufacturing costs.

[0027] 5. This invention employs a U-shaped bending of the top of the compression spring to form the elastic locking head of the compression spring; and an arc-shaped bending portion is also provided on the upper part of the end of the wing piece. This structure of the invention effectively prevents scraping when the elastic locking head is engaged in the third slot by utilizing the arc surface formed by the U-shaped bending; simultaneously, it effectively prevents scraping when the wing piece is inserted into the fourth slot of the push card from bottom to top by utilizing the arc shape of the end of the wing piece.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the push structure and its magnetic latching electromagnetic relay that satisfy flexible mounting and stable positioning of the present invention are not limited to the embodiments. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0030] Figure 2 This is a three-dimensional structural diagram of an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning (armature not installed);

[0031] Figure 3 This is a schematic diagram of the interaction between the moving spring and the push card in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0032] Figure 4 This is a top view of the moving spring and the push card in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0033] Figure 5 It is along Figure 4 A sectional view of line AA in the diagram;

[0034] Figure 6 This is a schematic diagram of the armature and the pusher clip in an embodiment of the pusher structure of the present invention that satisfies flexible mounting and stable positioning;

[0035] Figure 7 This is a top view of the armature and push card in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0036] Figure 8 It is along Figure 7 A sectional view of the BB line in the middle;

[0037] Figure 9 This is a three-dimensional structural schematic diagram of the moving spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0038] Figure 10 This is a front view of the moving spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0039] Figure 11 This is a side view of the moving spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0040] Figure 12 This is a rear view of the moving spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0041] Figure 13 This is a schematic diagram of the assembly structure of the compression spring and armature of an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0042] Figure 14 This is a three-dimensional structural schematic diagram of the compression spring of an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0043] Figure 15 This is a front view of a compression spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0044] Figure 16 This is a side view of a compression spring in an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0045] Figure 17This is a three-dimensional structural diagram of a push card according to an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0046] Figure 18 This is a top view of a push card according to an embodiment of the push structure of the present invention that satisfies flexible mounting and stable positioning;

[0047] Figure 19 This is a three-dimensional structural schematic diagram of an embodiment of the magnetic latching electromagnetic relay of the present invention;

[0048] Figure 20 This is a three-dimensional structural schematic diagram of an embodiment of the magnetic latching electromagnetic relay of the present invention (rotated at an angle);

[0049] Figure 21 This is a front view of an embodiment of the magnetic latching electromagnetic relay of the present invention;

[0050] Figure 22 This is a three-dimensional structural diagram of the base and coil frame of an embodiment of the magnetic latching electromagnetic relay of the present invention;

[0051] Figure 23 This is a three-dimensional structural diagram of the base and coil frame of an embodiment of the magnetic latching electromagnetic relay of the present invention (rotated at an angle);

[0052] Figure 24 This is a schematic diagram of the contact closed state of an embodiment of the magnetic latching electromagnetic relay of the present invention;

[0053] Figure 25 This is a schematic diagram of the contact open state of an embodiment of the magnetic latching electromagnetic relay of the present invention. Detailed Implementation

[0054] Example

[0055] See Figures 1 to 18As shown, a push structure of the present invention, which satisfies flexible mounting and stable positioning, includes an armature 1, a push clip 2, and a movable spring 3; the push clip 2 has a first slot 21 and a second slot 22, which are open at both ends to accommodate the head of the armature 1 and the head of the movable spring 3, respectively; the head of the movable spring 3 has an upper hook 31 and a lower hook 32, which are respectively adapted to the upper and lower edges of the second slot 22 of the push clip 2 to limit the relative displacement of the push clip in the thickness direction of the push clip; the head of the armature 1 is also equipped with a compression spring 4, which has a spring-like structure. The spring 41 has a spring head 41. When the push card 2 is inserted into the head of the armature 1 from top to bottom, the spring head 41 is engaged in the first slot 21 of the push card 2 to limit the relative displacement between the armature 1 and the push card 2 in the thickness direction of the push card 2. The head of the movable spring 3 is also provided with a first protrusion 33. When the push card 2 is inserted into the head of the movable spring 3 from top to bottom, the first protrusion 33 provides positioning of the movable spring 3 in the width direction of the push card 2 and limits the relative displacement between the movable spring 3 and the push card 2 in the width direction of the push card 2.

[0056] In this embodiment, the first protrusion 33 of the movable spring 3 is formed by the movable spring body striking one side of the movable spring to form a depression and forming a protrusion on the other side.

[0057] In this embodiment, the lower edge of the second slot of the push card 2 is provided with a protrusion 23, and the protrusion 23 is provided with a semi-enclosed groove 231; the first protrusion 33 of the moving spring 3 is adapted to the semi-enclosed groove 231 of the lower edge of the second slot 22 of the push card 2 to limit the relative displacement between the moving spring 3 and the push card 2 in the width direction of the push card.

[0058] In this embodiment, the upper hook 31 and lower hook 32 of the movable spring 3 face one side of the movable spring 3, and the first protrusion 33 of the movable spring 3 protrudes on the other side of the movable spring 3; a small round pouch 24 is also provided on the side of the upper groove edge of the second groove 22 of the push card 2 corresponding to the upper hook of the movable spring 3. When the movable spring 3 is inserted into the second groove 22 of the push card 2 so that the upper hook 31 of the movable spring 3 is adapted to the upper groove edge of the second groove 22 of the push card 2, the small round pouch 24 on the upper groove edge of the second groove 22 of the push card 2 abuts against the lower side of the upper hook 31 of the movable spring 3.

[0059] In this embodiment, the upper hook 31 of the movable spring 3 is one and is located in the middle of the width of the movable spring 3, and the lower hook 32 of the movable spring 3 is two and is located on both sides of the width of the movable spring 3 respectively; the upper hook 31 and the lower hook 32 of the movable spring 3 are distributed in a triangular shape and are respectively adapted to the upper and lower groove edges of the second groove 22 of the push card 2.

[0060] In this embodiment, the lower part of the compression spring 4 is fixed to the armature 1, and the top of the compression spring 4 is bent into a U-shape to form the elastic locking head 41 of the compression spring; a third locking groove 25 is provided in one side of the groove wall of the first locking groove 21 of the push card 2, which is distributed laterally, and the elastic locking head 41 of the compression spring is inserted into the third locking groove 25 to limit the relative displacement between the armature 1 and the push card 2 in the thickness direction of the push card.

[0061] In this embodiment, the third slot 25 in the first slot 21 of the push card 2 is formed by two rows of second protrusions 26 protruding from one side wall of the first slot 21.

[0062] In this embodiment, three second protrusions 26 protrude from one side of the groove wall of the first slot 21. The upper row has one second protrusion 26 located in the middle, and the lower row has two second protrusions 26 located on both sides. The three second protrusions 26 are distributed in a triangular shape.

[0063] In this embodiment, the compression spring 4 further includes a wing 43 extending outward from the main body portion 42 of the compression spring and capable of elastically deforming relative to the main body portion 42 of the compression spring in the thickness direction. The end of the wing 43 is adapted to the fourth slot 27 of the push card and cooperates with the fourth slot 27 in the thickness direction so that when the armature is actuated and the moving and stationary contacts move in the closing direction, the wing 43 contacts the push card 2 prior to the armature 1 to achieve flexible closure. The fourth slot 27 is provided on the side of the first slot 21 and communicates with the first slot 21.

[0064] In this embodiment, the upper part of the end of the wing 43 is also provided with an arc-shaped bend 431, so as to effectively prevent scraping when the wing 43 is inserted into the fourth slot 27 of the push card 2 from bottom to top.

[0065] In this embodiment, when the armature 1 moves and causes the pusher 2 to move in the direction of separating the moving and stationary contacts, the armature 1 directly contacts the second protrusion 26 in the first slot 21 of the pusher 2 to achieve rigid separation.

[0066] During assembly, when the head of the moving spring 3 engages with the second slot 22 of the push card, the first protrusion 33 of the moving spring 3 engages with the limiting feature of the push card (i.e., the semi-enclosed groove 2331 of the protrusion 23). The first protrusion 33 of the moving spring head is formed by punching, is smooth, and burr-free, and achieves limiting with the push card (in the width direction) by the cylindrical straight surface section. This feature effectively avoids the problem of the moving spring head sliding and scraping against the limiting groove of the push card during the push-pull process; in the thickness direction, the small plastic round pouch feature on the push card prevents the right-angled edge of the hook of the moving spring head from scraping against the plastic surface of the push card during the relay operation. When armature 1 and push card 2 are engaged, the upper row of second protrusions 26, through the functional definition of the triangular protrusions, engages with the U-shaped metal sleeve (i.e., elastic locking head) of the compression spring 4 to limit its movement and prevent it from coming off upwards; the lower row of two second protrusions provides support and prevents the push card from falling downwards; the characteristic structure of the three second protrusions 26 effectively avoids the push card from swaying in the left and right directions, resulting in high stability. Assembly instructions: The compression spring parts are riveted to the armature parts to form the armature part. At this time, the U-shaped feature of the compression spring has no deformation capability (the U-shaped bend is formed by bending, and the bending surface is smooth and burr-free). By deforming the wings (i.e., winglets 43) on both sides of the compression spring, the U-shaped feature is made to engage with the push card with a gap, effectively limiting its movement. After this, the compression spring wings (i.e., winglets 43) return to their initial unstressed state.

[0067] See Figures 1 to 25 As shown, a magnetic latching electromagnetic relay of the present invention includes a magnetic circuit portion 5, a base 6, a stationary spring 7, and a push structure as described above that satisfies flexible mounting and stable positioning; the magnetic circuit portion 5 and the moving spring 3 and stationary spring 6 are respectively mounted on the base 6; the moving spring 3 and stationary spring 6 are located at compatible positions.

[0068] In this embodiment, the magnetic circuit part 5 includes a coil frame 51, an enameled wire 52 wound around the coil frame, and an L-shaped iron core 53 inserted into the iron core hole of the coil frame. The armature 1 is L-shaped, and the coil frame 51 is adapted to the base 6 with the iron core hole 511 in a vertical direction. The armature 1 is assembled on the outward side of the coil frame 51 and adapted to the L-shaped iron core 53. The moving spring 3 and the stationary spring 6 are respectively adapted to the other side of the coil frame 51 opposite to the armature, with the moving spring 3 being inward and the stationary spring 6 being outward.

[0069] In this embodiment, the coil frame 51 and the base 6 are an integral structure. The coil frame 5 has an upper flange 512 and a lower flange, and the lower flange is integrated with the base 6. The coil frame also has a middle flange 513. The middle part of the armature 1 is rotatably mounted on the middle flange 513 of the coil frame. The middle flange 513 of the coil frame is also equipped with a magnet 8.

[0070] This invention discloses a push structure and its magnetically latching electromagnetic relay that provides flexible mounting and stable positioning. The armature 1 has a compression spring 4 at its head, with an elastic locking head 41. When the push card 2 is inserted into the head of the armature 1 from top to bottom, the elastic locking head 41 of the compression spring 4 engages within the first locking groove 21 of the push card 2, limiting the relative displacement between the armature 1 and the push card 2 in the thickness direction of the push card. The movable spring 3 also has a first protrusion 33 at its head. When the push card 2 is inserted into the head of the movable spring 3 from top to bottom, the first protrusion 33 provides positioning of the movable spring 3 in the width direction of the push card and limits the relative displacement between the movable spring 3 and the push card 2 in the width direction of the push card. This structure allows for flexible mounting during the insertion of the push card 2 into the armature 1 and movable spring 3 from top to bottom, achieving comprehensive positioning and limiting of the mating section. It features easy assembly, minimal assembly elements, flexible pressing with elastic deformation, and no scraping during assembly.

[0071] This invention provides a push structure and its magnetically held electromagnetic relay that satisfies flexible mounting and stable positioning. The first protrusion 33 of the moving spring 3 is formed by striking one side of the moving spring 3 to create a depression and forming a protrusion on the other side. Furthermore, the lower edge of the second slot 22 of the push card 2 has a downward-facing protrusion 23 with a semi-enclosed groove 231. The first protrusion 33 of the moving spring 3 fits into the semi-enclosed groove 231 on the lower edge of the second slot 22 of the push card. This structure of the invention utilizes the smooth, burr-free punching of the moving spring head, achieving the limiting width direction of the push card through a cylindrical straight section. This feature effectively avoids the problem of the moving spring head sliding and scraping against the limiting groove of the push card during the push-pull process.

[0072] This invention provides a push structure and magnetically latching electromagnetic relay that achieves flexible mounting and stable positioning. The structure employs a small round pouch 24 on one side of the upper hook 31 of the movable spring on the upper edge of the second slot 22 of the push card 2. When the movable spring 3 is inserted into the second slot of the push card, such that the upper hook 31 of the movable spring is fitted to the upper edge of the second slot 22, the small round pouch 24 on the upper edge of the second slot 22 of the push card abuts against the underside of the upper hook 31 of the movable spring 3. This structure, utilizing the small round pouch of the push card 2, effectively limits the bending angle to greater than 90° during insertion, even when the movable spring angle is unstable. This solves the problem of plastic debris generated when the insertion angle of the movable spring head hook becomes smaller during assembly, causing the right-angled surface of the movable spring to scrape against the plastic surface. Simultaneously, the small round pouch also helps prevent the right-angled edge of the hook from scraping against the plastic surface of the push card during relay operation.

[0073] This invention provides a push structure and its magnetically latching electromagnetic relay that satisfy flexible mounting and stable positioning. The structure employs a U-shaped bending of the top of a compression spring 4 to form the elastic latch head 41 of the spring. Furthermore, three second protrusions 26 extending from one side wall of the first latch 21 are arranged in a triangular pattern to serve as a third latch 25 that engages with the elastic latch head. In this structure, the three second protrusions 26 on one side wall of the first latch 21 of the push card both form the third latch 25 to engage the elastic latch head 41 of the compression spring and serve as the armature's direct contact part with the push card for rigid separation, simplifying the manufacturing process and reducing manufacturing costs.

[0074] This invention provides a push structure and its magnetically latching electromagnetic relay that achieve flexible mounting and stable positioning. The structure employs an elastic latch 41 formed by bending the top of a compression spring 4 into a U-shape; and an arc-shaped bend 431 is provided on the upper part of the end of the wing 43. This structure effectively prevents scraping when the elastic latch 4 is engaged in the third slot by utilizing the arc surface formed by the U-shape, and also effectively prevents scraping when the wing is inserted into the fourth slot of the push card from bottom to top by utilizing the arc shape of the wing end.

[0075] 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 push structure that provides flexible mounting and stable positioning, comprising an armature, a push clamp, and a movable spring; wherein the push clamp has a first slot that is open at both ends to accommodate the head of the armature and a second slot that accommodates the head of the movable spring; characterized in that: The head of the movable spring is provided with an upper hook that is adapted to the upper edge of the second slot of the push card and a lower hook that is adapted to the lower edge of the second slot to limit the relative displacement of the push card in the thickness direction of the push card; the head of the movable spring is also provided with a first protrusion, which provides positioning of the movable spring in the width direction of the push card and limits the relative displacement of the movable spring and the push card in the width direction of the push card when the push card is inserted into the head of the movable spring from top to bottom; the first slot of the push card is provided with a third slot, which is formed by two rows of second protrusions protruding from one side wall of the first slot; the head of the armature is also provided with a compression spring, which is provided with an elastic locking head. When the push card is inserted into the head of the armature from top to bottom, the elastic locking head of the compression spring is locked in the third slot in the first slot of the push card to limit the relative displacement of the armature and the push card in the thickness direction of the push card.

2. The pushing structure that satisfies flexible mounting and stable positioning according to claim 1, characterized in that: The first protrusion of the moving spring is formed by striking one side of the moving spring body to create a depression and forming a protrusion on the other side.

3. The pushing structure that satisfies flexible mounting and stable positioning according to claim 2, characterized in that: The second slot of the push card has a protrusion along its lower edge, and the protrusion has a semi-enclosed groove. The first protrusion of the movable spring is adapted to the semi-enclosed groove along the lower edge of the second slot of the push card to limit the relative displacement between the movable spring and the push card in the width direction of the push card.

4. The pushing structure that satisfies flexible mounting and stable positioning according to claim 1, characterized in that: The upper hook and lower hook of the movable spring face one side of the movable spring, and the first protrusion of the movable spring protrudes on the other side of the movable spring. A small round pouch is also provided on the side of the upper groove edge of the second slot of the push card corresponding to the upper hook of the movable spring. When the movable spring is inserted into the second slot of the push card and the upper hook of the movable spring is adapted to the upper groove edge of the second slot of the push card, the small round pouch on the upper groove edge of the second slot of the push card abuts against the lower side of the upper hook of the movable spring.

5. The pushing structure that satisfies flexible mounting and stable positioning according to claim 4, characterized in that: The movable spring has one upper hook located in the middle of its width, and two lower hooks located on opposite sides of its width. The upper and lower hooks are arranged in a triangular pattern. The upper hooks are fitted to the upper edge of the second slot of the push card, and the lower hooks are fitted to the lower edge of the second slot of the push card.

6. The pushing structure that satisfies flexible mounting and stable positioning according to claim 1, characterized in that: The lower part of the compression spring is fixed to the armature, and the top of the compression spring is bent into a U-shape to form the elastic locking head of the compression spring; a third locking groove is provided in one side of the groove wall of the first locking groove of the push card, which is distributed horizontally.

7. The pushing structure that satisfies flexible mounting and stable positioning according to claim 1, characterized in that: Three second protrusions extend from one side of the first slot. The upper row has one second protrusion in the middle, and the lower row has two second protrusions on both sides. The three second protrusions are distributed in a triangular shape.

8. The pushing structure that satisfies flexible mounting and stable positioning according to claim 6, characterized in that: The compression spring further includes a wing extending outward from the main body of the compression spring and capable of elastic deformation in the thickness direction relative to the main body of the compression spring. The end of the wing is adapted to the fourth slot of the push card and cooperates with the fourth slot in the thickness direction so that when the armature is actuated and the moving and stationary contacts move in the closing direction, the wing contacts the push card first, so as to achieve flexible closure. The fourth slot is located on the side of the first slot and communicates with the first slot.

9. The pushing structure that satisfies flexible mounting and stable positioning according to claim 8, 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 fourth slot of the push card from bottom to top.

10. The pushing structure for flexible mounting and stable positioning according to claim 7, characterized in that: When the armature moves and causes the pusher to move in the direction of separating the moving and stationary contacts, the armature comes into direct contact with the second protrusion in the first slot of the pusher to achieve rigid separation.

11. A magnetic latching electromagnetic relay, characterized in that: Includes a push structure that satisfies flexible mounting and stable positioning as described in any one of claims 1 to 10.

12. A magnetic latching electromagnetic relay, characterized in that: It includes a magnetic circuit portion, a base, a stationary spring, and a push structure as described in any one of claims 1 to 10 that satisfies flexible mounting and stable positioning; the magnetic circuit portion and the moving and stationary springs are respectively mounted on the base; the moving and stationary springs are located in compatible positions.

13. The magnetic latching electromagnetic relay according to claim 12, 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.

14. The magnetic latching electromagnetic relay according to claim 13, 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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