Pushing structure and electromagnetic relay

Abstract

This utility model discloses a pushing structure and an electromagnetic relay. The pushing structure is driven by an armature component to push a movable spring in a movable spring section. It includes a plastic part for cooperating with the armature component and a pushing member for cooperating with the movable spring. The pushing member is connected to the plastic part, and the material of the pushing member is different from that of the plastic part. The material of the pushing member includes one or more of thermosetting plastics, ceramics, and metals. The pushing member of this utility model has excellent wear resistance and temperature resistance, completely avoiding the deformation problem of thermoplastic plastics, and significantly reducing frictional loss between the pushing structure and the movable spring. This ensures the long-term stability of the overtravel parameters and effectively eliminates the generation of plastic debris, preventing premature failure caused by plastic debris contaminating the contacts, thus greatly extending the mechanical life of the relay.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a driving structure and an electromagnetic relay. Background Technology

[0002] As a typical circuit control element, the electromagnetic relay operates by controlling a large current output circuit through a small current input circuit. This operation primarily relies on the coordinated action of the magnetic circuit, the actuating component, and the contact components. During relay operation, the magnetic circuit converts electrical energy into magnetic energy, and the actuating component further converts this magnetic energy into mechanical energy, ultimately driving the contacts to close and open. The actuating component, as the key link in energy transfer, directly affects the reliability and lifespan of the relay.

[0003] Currently, the common design for the actuator part uses a thermoplastic actuator card to directly drive a metal moving spring. This structure presents two prominent technical challenges during long-term use. First, there's the issue of material wear. Because the hardness of plastic is much lower than that of metal, the plastic component experiences severe wear during continuous friction between the actuator card and the moving spring. This wear not only alters the actuator card's travel distance, affecting the overtravel parameter—a key parameter determining relay lifespan—but also generates plastic debris that contaminates the contacts, increasing the risk of premature relay failure. Second, there's the issue of temperature resistance. To mitigate the aforementioned actuator card wear problem, existing actuator cards minimize their contact area with the moving spring. However, under high-current conditions, especially in high-current applications such as photovoltaic inverters, the high temperature of the moving spring causes thermoplastic deformation of the plastic actuator card's contact area under high temperature and pressure. This deformation not only alters the overtravel parameter but also increases the contact area, further exacerbating the wear problem and creating a vicious cycle.

[0004] These problems severely affect the reliability and lifespan of relays in critical applications, and therefore urgently need to be addressed by improving the structural design of the actuator. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a driving structure and an electromagnetic relay, which solves the wear and temperature resistance problems of the plastic driving part in the prior art, and effectively improves the stability and reliability of the relay.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a pushing structure, which is driven by the armature component to push the moving spring plate of the moving spring portion, including a plastic part for cooperating with the armature component and a pushing member for cooperating with the moving spring plate, the pushing member being connected to the plastic part, the material of the pushing member being different from that of the plastic part, and the material of the pushing member including one or more of thermosetting plastics, ceramics, and metals.

[0007] In a preferred embodiment, there are multiple pushers arranged side by side along a direction perpendicular to their pushing direction, and the multiple pushers correspond one-to-one with the multiple moving springs arranged side by side in the moving spring portion; or, the multiple pushers correspond one-to-one with the multiple elastic support pieces arranged side by side in the moving springs through forks.

[0008] In a preferred embodiment, the plastic part includes a base for cooperating with the armature component and a mounting structure integrally formed on the base. The mounting structure includes a plurality of mounting portions arranged in parallel, and a plurality of pushers are connected to the plurality of mounting portions one by one.

[0009] In a preferred embodiment, the plastic part is L-shaped, and the substrate and the mounting structure correspond to the two sides of the L-shape respectively; the substrate and one side of the L-shaped armature component are fixed together by insert injection molding.

[0010] In a preferred embodiment, one side of the armature component is provided with a first hollow hole, the substrate wraps around one side of the armature component, and a second hollow hole is formed corresponding to the first hollow hole; a reinforcing part is provided between adjacent mounting parts.

[0011] In a preferred embodiment, the pusher is inserted into the mounting groove corresponding to the plastic part and is interference-fitted with the mounting groove; the pusher is in contact with the moving spring, and the surface of the pusher for contacting the moving spring is a convex arc surface or spherical surface.

[0012] In a preferred embodiment, the pusher is inserted into the mounting groove in the opposite direction of its pushing direction; the pusher is rivet-shaped, including a head and a rod, the rod being inserted into the mounting groove, and the head being used to contact and engage with the movable spring.

[0013] In a preferred embodiment, the pusher is a rivet.

[0014] This utility model also provides an electromagnetic relay, including a magnetic circuit part, a moving spring part, and a stationary spring part. The magnetic circuit part includes an armature component, the moving spring part includes at least one moving spring component, the moving spring component includes a moving spring plate and a moving contact disposed on the moving spring plate, and the stationary spring part includes a stationary contact disposed corresponding to the moving contact. It also includes a pushing structure as described in this utility model above, the plastic part being connected to the armature component. As the armature component moves in the attraction direction, the pushing member pushes the moving spring plate to close or open the moving contact with the stationary contact.

[0015] In a preferred embodiment, the moving spring portion includes a conductive bridge plate and a plurality of moving spring components, which are arranged sequentially along the length of the bridge plate, and the moving spring plates of each moving spring component are respectively connected to the bridge plate; the stationary spring portion includes a plurality of stationary spring components, each stationary spring component including a stationary spring plate and a stationary contact provided on the stationary spring plate, and each stationary spring component corresponds to one or at least two moving spring components; the pushing structure is provided in a plurality of ways, and each pushing structure corresponds to one or at least two moving spring components.

[0016] In a preferred embodiment, the stationary spring component and the pushing structure correspond one-to-one with the moving spring component; the magnetic circuit portion is provided in multiple ways, and the multiple magnetic circuit portions correspond one-to-one with the multiple pushing structures; the moving spring plates of each moving spring component are respectively formed by forking to form multiple elastic support plates arranged side by side along the length direction of the bridge plate, and the moving contact is provided at the same position of each elastic support plate; the pushing member of each pushing structure is provided in multiple ways, and it corresponds one-to-one with the multiple elastic support plates of the corresponding moving spring component; the stationary contact of each stationary spring component is provided in multiple ways, and it corresponds one-to-one with the moving contact on the multiple elastic support plates of the corresponding moving spring component.

[0017] In a preferred embodiment, the movable spring includes a fixed part, a deformable part, and a movable part. The deformable part is bent, and its two ends are respectively connected to the fixed part and the movable part. The fixed part is connected to the bridge plate and is located on the back side of the movable part. The movable part forms the plurality of elastic support pieces by forking, and the contact surface of the movable contact is located on the front side of the movable part. When the contact is broken, the movable part is inclined towards the side closer to the fixed part, and each of its elastic support pieces abuts against the corresponding pusher.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The pushing structure of this utility model includes the aforementioned plastic part and the pushing component. The pushing component is made of one or more of thermosetting plastics, ceramics, and metals, resulting in excellent wear resistance and temperature resistance. This completely avoids the deformation problem of thermoplastic plastics and significantly reduces frictional loss between the pushing structure and the moving spring, ensuring the long-term stability of the overtravel parameters. It also effectively eliminates the generation of plastic debris, preventing premature failure caused by plastic debris contaminating the contacts, thus greatly extending the mechanical life of the relay. Furthermore, the plastic part of this utility model, as a key isolation structure between the magnetic circuit and the contact part, not only reduces the cost of the pushing structure but also effectively increases the creepage distance between the magnetic circuit and the contact part through its excellent insulation properties, significantly improving the electrical safety performance of the relay. Simultaneously, the plastic part has good plasticity, enabling the realization of complex structures through precision injection molding, which not only simplifies the production process but also facilitates stable and reliable mechanical connections with the armature components and the pushing component.

[0020] 2. As a preferred embodiment, when the moving spring portion includes multiple moving spring plates arranged in parallel, or when the moving spring plates are forked to form multiple elastic support plates arranged in parallel, multiple pushing members are also provided, and each pushing member corresponds to one of the multiple moving spring plates or multiple elastic support plates. This design ensures that each pushing member can directly act on the ideal position of each moving spring plate or elastic support plate, eliminating the torque imbalance problem in the overall pushing and enabling all moving spring plates or multiple elastic support plates to achieve a highly synchronized action effect. In addition, by using multiple independent pushing members, each pushing member can be adjusted independently. When there are flatness or consistency deviations among the multiple moving spring plates or multiple elastic support plates, the differences in flatness or consistency among the multiple moving spring plates or multiple elastic support plates can be effectively compensated by fine-tuning the spatial position of the corresponding pushing member, thereby ensuring the synchronous action of the moving contacts.

[0021] 3. As a preferred embodiment, the pusher is inserted into the corresponding mounting groove of the plastic part and is interference-fitted with the mounting groove, which makes the connection between the pusher and the mounting groove relatively simple and facilitates the adjustment of the spatial position of the pusher according to actual needs.

[0022] 4. The pusher component is shaped like a rivet, which simplifies its structure, makes it easy to manufacture, and allows for both fixed installation using the rod and direct contact between the pusher surface and the moving spring using the head. Preferably, the pusher component is a rivet, which also helps dissipate heat, reduces contact temperature rise, and ensures structural stability and reliability.

[0023] 5. Because the moving spring plates of each moving spring component are formed by forks to create multiple elastic support plates arranged parallel along the length of the bridging plate, and each elastic support plate has a moving contact at the same position, each moving spring component of this invention can achieve a multi-contact parallel design to reduce the contact resistance of the main circuit and thus reduce heat generation. In particular, multiple elastic support plates are formed from the same moving spring plate. This design not only simplifies the installation process but also effectively ensures the flatness of multiple elastic support plates, thereby significantly improving the synchronization of multi-contact operation. In addition, adjacent elastic support plates are separated from each other by forked slots. This design makes the operation process of the moving contacts relatively independent, which can optimize the ablation of individual contacts and thus significantly improve the overall service life.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the driving structure and electromagnetic relay of the present invention are not limited to the embodiments. Attached Figure Description

[0025] Figure 1 This is an exploded view of the pushing structure of this utility model (including the armature component);

[0026] Figure 2 This is a front view of the plastic part of this utility model;

[0027] Figure 3 This is a top view of the plastic part of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the pusher component of this utility model;

[0029] Figure 5 This is a schematic diagram of the push structure of this utility model after the plastic part and the armature component are combined;

[0030] Figure 6 This is a three-dimensional structural diagram of the pushing structure of this utility model (including the armature component);

[0031] Figure 7 This is a front view of the pushing structure of this utility model (including the armature component);

[0032] Figure 8 This is a top view of the pushing structure of this utility model (including the armature component);

[0033] Figure 9 This is a side view of the pushing structure of this utility model (including the armature component);

[0034] Figure 10 This is a schematic diagram showing the cooperation of the magnetic circuit part, contact part, and driving structure of the electromagnetic relay of this utility model;

[0035] Figure 11yes Figure 10 Side view;

[0036] Figure 12 This is an exploded view of the movable spring part of this utility model;

[0037] Figure 13 This is an exploded view of the movable spring of this utility model;

[0038] Figure 14 This is a three-dimensional structural diagram of the moving spring part of this utility model;

[0039] Figure 15 This is a front view of the movable spring portion of this utility model;

[0040] Figure 16 This is a side view of the movable spring portion of this utility model;

[0041] Figure 17 This is a three-dimensional structural schematic diagram of the electromagnetic relay of this utility model (showing a part);

[0042] Figure 18 yes Figure 17 Top view;

[0043] Figure 19 yes Figure 18 AA section view;

[0044] In the diagram, 1. Plastic part; 11. Base; 111. Second hollow hole; 12. Mounting structure; 121. Mounting part; 1211. Mounting groove; 122. Reinforcing part; 2. Pushing part; 21. Rod part; 22. Head; 221. Spherical surface; 3. Magnetic circuit part; 31. Armature part; 311. First hollow hole; 312. Through hole; 32. Coil frame; 33. Coil; 34. Yoke; 35. Iron core; 36. Restoring spring; 4. Moving spring part; 41. Moving spring; 411. Fixing part; 412. Deformation part; 413. Moving part; 4131. Elastic support; 4132. Forked groove; 414. Flexible spring; 5. Bridging plate; 51. Auxiliary lead-out end; 6. Stationary spring part; 61. Stationary spring; 62. Stationary contact; 7. Connecting rivet; 8. Base; 81. Limiting groove. Detailed Implementation

[0045] In this invention, the terms "first," "second," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more.

[0046] Please see Figures 1-9As shown, this utility model discloses a pushing structure for driving a movable spring sheet of a movable spring portion, driven by an armature component 31. It includes a plastic part 1 for cooperating with the armature component 31 and a pushing component 2 for cooperating with the movable spring sheet. The pushing component 2 is connected to the plastic part 1. The plastic part 1 is made of thermoplastic plastic, while the pushing component 2 is made of a different material than the plastic part 1. The material of the pushing component 2 includes one or more of thermosetting plastics, ceramics, and metals. In this embodiment, the material of the pushing component 2 is exemplified by metal (e.g., stainless steel), but it is not limited to this. Therefore, the temperature resistance and wear resistance of the pushing component 2 are superior to those of the plastic part 1.

[0047] In this embodiment, there are multiple pushers 2, which are arranged in parallel along a direction perpendicular to their pushing direction. The multiple pushers 2 are matched one-to-one with the multiple moving springs arranged in parallel with the moving springs. Alternatively, the multiple pushers 2 are matched one-to-one with the multiple elastic support pieces that are arranged in parallel through forks of the moving springs.

[0048] The plastic part 1 specifically includes a base 11 for mating with the armature component 31 and a mounting structure 12 integrally formed on the base 11. The plastic part 1 is generally L-shaped, with one side for mating with the armature component 31 and the other side for connecting the pusher component 2. Specifically, the base 11 and the mounting structure 12 of the plastic part 1 correspond to the two sides of the L-shape, respectively. One side of the plastic part 1 (i.e., the base 11) is fixed to one side of the L-shaped armature component 31 by insert injection molding. In this embodiment, the armature component 31 is specifically a single-unit structure, and can also be simply referred to as the armature. One side of the armature component 31 is provided with a first hollow hole 311, which allows the center of the armature component 31 to be adjusted to its axis of rotation, and can reduce costs. Specifically, the side of the armature component 31 used for insert injection molding is hollowed out, which can increase its bonding strength with the injection-molded plastic. The plastic part 1 is made of high-temperature resistant plastic material. After it is injection molded with one side of the armature component 31, the base 11 of the plastic part 1 wraps around one side of the armature component 31, and a second hollow hole 111 is formed corresponding to the first hollow hole 311. In other embodiments, the armature component 31 and the plastic part 1 are connected by snap-fit ​​or plug-in methods, and the armature component 31 can be a single armature or a component structure, such as a combination of an armature and a plastic insulating part, or a combination of two armatures, a permanent magnet, and a plastic insulating part.

[0049] The aforementioned mounting structure 12 includes a plurality of mounting portions 121 arranged in parallel, and a plurality of pushers 2 are connected to the plurality of mounting portions 121 one by one. Each mounting portion 121 is generally cylindrical (taking a cylindrical shape as an example) and extends along its pushing direction, and a reinforcing portion 122 is provided between adjacent mounting portions 121 to improve the connection strength and overall stability of each mounting portion 121.

[0050] In a preferred embodiment, the pusher 2 is inserted into the mounting groove 1211 corresponding to the plastic part 1, and is interference-fitted with the mounting groove 1211. Specifically, the pusher 2 is inserted into the mounting groove 1211 in the opposite direction of its pushing direction. Since the pusher 2 is connected to the mounting part 121, the mounting groove 1211 is located in the mounting part 121. This insertion and interference fit method makes the connection between the pusher 2 and the plastic part 1 simple and quick, and facilitates the control of the spatial position of the pusher 2 during assembly, so as to adjust the spatial position of the pusher 2 according to actual needs. However, the connection method between the pusher 2 and the plastic part 1 is not limited to this. In other embodiments, the pusher 2 and the plastic part 1 are connected by one or more of the following connection methods: insert injection molding, hot riveting, snap-fit ​​connection, bonding, etc.

[0051] In a preferred embodiment, the pusher 2 contacts and engages with the movable spring 41, and the surface of the pusher 2 that contacts the movable spring 41 is a convex arc surface or spherical surface 221. This results in point or line contact between the pusher 2 and the movable spring 41. Compared to planar contact, the arc surface or spherical surface 221 has lower frictional resistance, more sensitive movement, avoids jamming problems, and prevents material damage due to long-term friction, thus improving contact reliability. Furthermore, the spherical surface 221 structure allows for a certain degree of self-adjustment, maintaining good contact even with minor assembly deviations.

[0052] In a preferred embodiment, the pusher 2 is rivet-shaped, comprising an integrally formed head 22 and a rod 21. The diameter of the rod 21 is smaller than the diameter of the head 22. The rod 21 is inserted into the mounting groove 1211 and is interference-fitted with the mounting groove 1211. The head 22 is used to contact and engage with the movable spring 41. Therefore, the side of the head 22 facing away from the rod 21 is used to contact and engage with the movable spring 41, and is preferably spherical 221. Furthermore, the pusher 2 is a rivet, and preferably a solid rivet, which significantly enhances the structural stability of the pusher 2. This is because the rivet itself has significant rigidity, and the structural characteristics of its head 22 and rod 21 enable it to maintain its shape well when subjected to external forces.

[0053] This utility model discloses a push structure that can be applied to electrical products such as relays and contactors. In practical applications, the push component 2 is in direct contact with the moving spring 41. Its excellent wear resistance and temperature resistance completely avoid the deformation problem of thermoplastic plastics and significantly reduce the frictional loss between the push structure and the moving spring, ensuring the long-term stability of the overtravel parameters and effectively eliminating the generation of plastic debris. This prevents premature failure caused by plastic debris contaminating the contacts, greatly extending the mechanical life of the relay. The plastic component 1 of the push structure serves as a key isolation structure between the magnetic circuit and the contact part. It not only reduces the cost of the push structure but also effectively increases the creepage distance between the magnetic circuit and the contact part through its excellent insulation properties, significantly improving the electrical safety performance of the relay. If the entire push structure were made of metal, not only would the cost be high, but it would also result in insufficient creepage distance and air gap between the magnetic circuit and the contact part, leading to the risk of dielectric breakdown or leakage. In particular, besides providing insulation between the magnetic circuit and the contact parts, the plastic part 1 also possesses excellent plasticity, enabling the fabrication of complex structures through precision injection molding. This simplifies the manufacturing process and facilitates a stable and reliable mechanical connection with the armature component 31 and the pusher component 2. This design satisfies high-voltage insulation requirements while optimizing the assembly convenience and mechanical strength of the overall structure, achieving a perfect balance between electrical performance and structural craftsmanship.

[0054] Specifically, when the moving spring portion includes multiple moving spring plates arranged in parallel, or when the moving spring plates are forked to form multiple elastic support plates arranged in parallel, the pusher 2 of this invention is also configured as multiple, with each pusher 2 corresponding to one of the multiple moving spring plates or multiple elastic support plates. This design ensures that each pusher 2 can directly act on the ideal position of each moving spring plate or elastic support plate, eliminating the torque imbalance problem in the overall push and enabling all moving spring plates or multiple elastic support plates to achieve a highly synchronized action effect. Furthermore, by using multiple independent pushers 2, and with each pusher 2 fixed to the plastic part 1 through assembly, each pusher 2 can be adjusted independently. When there are flatness or consistency deviations among the multiple moving spring plates or multiple elastic support plates, the differences in flatness or consistency among the multiple moving spring plates or multiple elastic support plates can be effectively compensated by fine-tuning the spatial position of the corresponding pusher 2, thereby ensuring the synchronous action of each moving contact.

[0055] Please see Figures 1-19As shown, an electromagnetic relay of this invention includes a magnetic circuit portion 3, a moving spring portion, and a stationary spring portion. The magnetic circuit portion 3 includes an armature component 31. The moving spring portion includes at least one moving spring component 4, which includes a moving spring plate 41 and a moving contact 42 disposed on the moving spring plate 41. The stationary spring portion includes a stationary contact 62 disposed corresponding to the moving contact 42. This invention also includes a pushing structure as described above. The plastic part 1 of the pushing structure is connected to the armature component 31. As the armature component 31 moves in the attraction direction, the pushing member 2 pushes the moving spring plate 41 to close or open the moving contact 42 and the stationary contact 62. Specifically, in this embodiment, this invention is a normally open relay, where the pushing member 2 closes the moving contact 42 and the stationary contact 62 by pushing the moving spring plate 41, but it is not limited to this.

[0056] The moving spring section includes a conductive bridge plate 5 and multiple moving spring components 4. The bridge plate 5 is elongated, and the multiple moving spring components 4 are arranged sequentially along the length of the bridge plate 5, with each moving spring piece 41 connected to the bridge plate 5. The stationary spring section specifically includes multiple stationary spring components 6, each including a stationary spring piece 61 and a stationary contact 62 located on the stationary spring piece 61. Each stationary spring component 6 corresponds to one or at least two moving spring components 4. Multiple actuating structures are also provided, each corresponding to one moving spring component 4. Multiple magnetic circuit sections 3 are provided, with each magnetic circuit section 3 corresponding to one actuating structure. In this embodiment, two moving spring components 4 are used as an example, but this is not a limitation. Correspondingly, there are also two stationary spring components 6, two actuating structures, and two magnetic circuit sections 3. Therefore, two sets of moving spring components 4 and two sets of stationary spring components 6 cooperate to form a series structure. The bridge plate 5 is connected to an auxiliary lead-out terminal 51, which can be used for signal monitoring.

[0057] As a preferred embodiment, such as Figures 12-16As shown, the moving spring plates 41 of each moving spring component 4 are forked to form multiple elastic support plates 4131 arranged side by side along the length direction of the bridging plate 5. Moving contacts 42 are provided at the same positions on each elastic support plate 4131, making the moving contacts 42 of each elastic support plate 4131 flush and on the same line. In this embodiment, the example is that each elastic support plate 4131 has a moving contact 42 at its end. The moving contacts 42 are preferably fixed to the elastic support plates 4131 by riveting, which has advantages such as low contact resistance, low contact temperature rise, and low cost compared to welding. Multiple pushing members 2 of each pushing structure correspond one-to-one with the multiple elastic support plates 4131 of the moving spring component 4. Multiple stationary contacts 62 are provided for each stationary spring component 6, and they correspond one-to-one with the moving contacts 42 on the corresponding multiple elastic support plates 4131 of the moving spring component 4. This structural design of the moving spring 41 enables each moving spring component 4 to achieve a multi-contact parallel design, thereby reducing the contact resistance of the main circuit and thus reducing heat generation. Furthermore, since multiple elastic supports 4131 are formed from the same moving spring 41, this design not only simplifies the installation process but also effectively ensures the flatness of the multiple elastic supports 4131, significantly improving the synchronicity of the movement of the moving contacts 42 on each elastic support 4131 (referring to the various elastic supports 4131 located on the same moving spring 41). In addition, adjacent elastic supports 4131 are separated from each other by forked slots, making the operation of each moving contact 42 relatively independent, optimizing the ablation of individual contacts, and thus significantly improving the overall service life.

[0058] In a preferred embodiment, the movable spring 41 includes a fixed portion 411, a deformable portion 412, and a movable portion 413. The deformable portion 412 is bent, with both ends facing downwards and connecting to the fixed portion 411 and the movable portion 413 respectively. Specifically, the fixed portion 411, the deformable portion 412, and the movable portion 413 are integrally formed, and the deformable portion 412 is U-shaped or arc-shaped. The fixed portion 411 is connected to the bridge plate 5 and is located on the back side of the movable portion 413, and the length of the fixed portion is much shorter than the length of the movable portion 413. Specifically, the fixed portion 411 and the bridge plate 5 are riveted together by multiple connecting rivets 7, and the bridge plate 5 is located between the fixed portion 411 and the movable portion 413. The movable portion 413 forms the aforementioned multiple elastic support pieces 4131 through a fork, and the contact surface of the movable contact 42 is located on the front side of the movable portion 413. The forked groove 4132 formed between adjacent elastic support pieces 4131 extends from the tail end of the movable part 413 to the connection between the deformable part 412 and the movable part 413, making the forked groove 4132 elongated and the relative independence between each elastic support piece 4131 better.

[0059] Furthermore, the movable part 413 is inclined towards the side closer to the fixed part 411 in the contact-broken state (i.e., the moving contact 42 and the stationary contact 62 are disconnected), and each of its elastic support pieces 4131 abuts against the corresponding pusher 2. This design increases the gap between the moving and stationary contacts in the disconnected state, meeting the requirement for a large gap between the moving and stationary contacts. The movable part 413 also forms a certain pre-pressure, which on the one hand helps to improve the contact breaking speed, enhance the action response, and ensure that the arc is extinguished quickly; on the other hand, it ensures that each elastic support piece 4131 of the movable part 413 can abut against the corresponding pusher 2 in the contact-broken state, ensuring that the pusher 2 can remain in its original position even if it becomes loose after long-term operation, avoiding the risk of falling off.

[0060] In a preferred embodiment, each movable spring component 4 has a movable spring sheet 41 formed by stacking multiple flexible spring sheets 414, and there is a gap between the deformable portions 412 of adjacent flexible spring sheets. This design can improve the overall flexibility of the movable spring sheet 41 while ensuring a high current carrying capacity.

[0061] The magnetic circuit section 3 includes, in addition to the armature component 31, a yoke 34, a coil frame 32, a coil 33 wound around the coil frame 32, an iron core 35 passing through the axial hole of the coil frame 32, and a restoring spring 36. The yoke 34 is L-shaped, with one side located at one end of the axial direction of the coil frame 32 and riveted to one end of the iron core 35. The other side is located outside the coil frame 32 and extends along the other end of the axial direction of the coil frame 32. The other side of the armature component 31 is oscillatingly positioned at the knife edge at the other end of the yoke 34 and magnetically engaged with the other end of the iron core 35. The restoring spring 36 is connected to the yoke 34 by means of snap-fit ​​or riveting and elastically presses against the armature component 31 to limit the armature component 31 and assist the armature component 31 in resetting in the opposite direction of the attraction direction. A through hole 312 is provided at the junction of the two sides of the armature component 31 to cooperate with the restoring spring 36.

[0062] This utility model also includes a base 8, in which two magnetic circuit parts 3 are arranged side by side along the length of the base 8, and the coil frame 32 of each magnetic circuit part 3 is vertical, that is, the axial direction of the coil frame 32 is in the vertical direction. The stationary spring plates 61 of the two stationary spring parts 6 are respectively inserted into the base 8, and the bridging plate 5 of the moving spring part extends along the length of the base 8, and the two ends of the bridging plate 5 are respectively inserted into the corresponding limiting grooves 81 provided in the base 8.

[0063] The working principle of the electromagnetic relay of this utility model is as follows:

[0064] When the coil 33 is energized, the magnetic circuit part 3 generates a magnetic field. The other side of the armature part 31 is attracted by the iron core 35 and rotates counterclockwise, driving each pusher 2 of the push structure to push the corresponding elastic support plate 4131, so that the moving contact 42 and the stationary contact 62 are closed.

[0065] When the coil 33 is de-energized, the magnetic field generated by the magnetic circuit part 3 disappears, and the armature part 31 rotates clockwise to reset under the reaction force of the restoring spring 36, so that each pusher 2 of the push structure releases the corresponding elastic support 4131. At the same time, each elastic support 4131 resets to the contact disconnection direction under the action of its own elastic restoring force, so that the moving contact 42 and the stationary contact 62 are quickly disconnected.

[0066] The present invention relates to a driving structure and an electromagnetic relay. The parts not described herein are the same as or can be implemented using existing technologies.

[0067] The above embodiments are only used to further illustrate a driving structure and electromagnetic relay of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A pushing structure for being driven by an armature component to push a movable spring portion, characterized in that: It includes a plastic part for cooperating with the armature component and a pusher for cooperating with the movable spring, the pusher being connected to the plastic part, the pusher being made of a different material than the plastic part, and the material of the pusher being one or more of thermosetting plastics, ceramics, and metals.

2. The pushing structure according to claim 1, characterized in that: The pusher is provided in multiple ways, and the multiple pushers are arranged in parallel along a direction perpendicular to their pushing direction. The multiple pushers are in one-to-one correspondence with the multiple moving springs arranged in parallel with the moving spring portion. Alternatively, the multiple pushers are in one-to-one correspondence with the multiple elastic support pieces arranged in parallel through forks formed by the moving springs.

3. The pushing structure according to claim 2, characterized in that: The plastic part includes a base for cooperating with the armature component and a mounting structure integrally formed on the base. The mounting structure includes a plurality of mounting portions arranged in parallel, and a plurality of pushers are connected to the plurality of mounting portions one by one.

4. The pushing structure according to claim 3, characterized in that: The plastic part is L-shaped, and the base and the mounting structure correspond to the two sides of the L-shape respectively; the base and one side of the L-shaped armature component are fixed together by insert injection molding.

5. The pushing structure according to claim 4, characterized in that: The armature component has a first hollow hole on one side, the base body wraps around one side of the armature component, and a second hollow hole is formed corresponding to the first hollow hole; a reinforcing part is provided between adjacent mounting parts.

6. The driving structure according to any one of claims 1-5, characterized in that: The pusher is inserted into the mounting groove corresponding to the plastic part and is interference-fitted with the mounting groove; the pusher is in contact with the moving spring, and the surface of the pusher that is in contact with the moving spring is a convex arc surface or spherical surface.

7. The pushing structure according to claim 6, characterized in that: The pusher is inserted into the mounting groove in the opposite direction of its pushing direction; the pusher is rivet-shaped, including a head and a rod, the rod being inserted into the mounting groove, and the head being used to contact and engage with the moving spring.

8. The pushing structure according to claim 7, characterized in that: The pushing component is a rivet.

9. An electromagnetic relay, comprising a magnetic circuit portion, a moving spring portion, and a stationary spring portion, wherein the magnetic circuit portion includes an armature component, the moving spring portion includes at least one moving spring component, the moving spring component including a moving spring plate and a moving contact disposed on the moving spring plate, and the stationary spring portion includes a stationary contact disposed corresponding to the moving contact; characterized in that: It also includes a push structure as described in any one of claims 1-8, wherein the plastic part is connected to the armature component, and as the armature component moves in the attraction direction, the pusher pushes the movable spring to close or open the movable contact with the stationary contact.

10. The electromagnetic relay according to claim 8, characterized in that: The moving spring section includes a conductive bridge plate and multiple moving spring components, which are arranged sequentially along the length of the bridge plate, and the moving spring plates of each moving spring component are respectively connected to the bridge plate; the stationary spring section includes multiple stationary spring components, each stationary spring component includes a stationary spring plate and a stationary contact provided on the stationary spring plate, and each stationary spring component corresponds to one or at least two moving spring components; the pushing structure is provided in multiple ways, and each pushing structure corresponds to one or at least two moving spring components.

11. The electromagnetic relay according to claim 10, characterized in that: The stationary spring component and the pushing structure correspond one-to-one with the moving spring component; the magnetic circuit portion is provided in multiple ways, and the multiple magnetic circuit portions correspond one-to-one with the multiple pushing structures; the moving spring plates of each moving spring component are respectively formed by forking to form multiple elastic support plates arranged side by side along the length direction of the bridge plate, and the moving contact is provided at the same position of each elastic support plate; the pushing member of each pushing structure is provided in multiple ways, and it corresponds one-to-one with the multiple elastic support plates of the corresponding moving spring component; the stationary contact of each stationary spring component is provided in multiple ways, and it corresponds one-to-one with the moving contact on the multiple elastic support plates of the corresponding moving spring component.

12. The electromagnetic relay according to claim 11, characterized in that: The movable spring includes a fixed part, a deformable part, and a movable part. The deformable part is bent, and its two ends are respectively connected to the fixed part and the movable part. The fixed part is connected to the bridge plate and is located on the back side of the movable part. The movable part forms the plurality of elastic support pieces through forks, and the contact surface of the movable contact is located on the front side of the movable part. The movable part is tilted towards the side closer to the fixed part when the contact is broken, and each of its elastic support pieces abuts against the corresponding pusher.

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