A moving spring assembly for a magnetic latching relay

Abstract

The utility model discloses a kind of moving spring subassembly of magnetic latching relay, including moving spring main piece, moving spring small bending support sheet, moving spring big bending support sheet, and moving contact from top to bottom are sequentially connected closely, and still include rotary sheet and the auxiliary elastic sheet of "V" type structure;Rotary sheet is rotatably connected with one end of moving spring main piece, auxiliary elastic sheet one end is connected with rotary sheet, other end is connected with moving spring small bending support sheet, and moving contact is located below auxiliary elastic sheet.This component is matched by rotary sheet and auxiliary elastic sheet, effectively enhances the overstroke capacity, improves contact pressure, ensures good contact, improves the reliability of relay;While reducing contact wear, prolong the service life, and enhance the anti-shock performance, suitable for a variety of fields of magnetic latching relay.

Description

Technical Field

[0001] This utility model relates to the field of magnetic latching relay technology, and specifically to a moving spring assembly for a magnetic latching relay. Background Technology

[0002] In numerous fields such as power electronics, smart homes, and industrial control, magnetic latching relays, as control elements that maintain contact states through permanent magnet force, occupy an indispensable position due to their low power consumption and high stability. The moving spring assembly, as the core actuating component of the magnetic latching relay, directly determines key indicators such as contact reliability, service life, and vibration resistance.

[0003] The stability of contact is one of the core elements in evaluating relay performance, and the "overtravel" parameter plays a crucial role. Overtravel refers to the distance the moving contact of the relay continues to move after making contact with the stationary contact. It ensures that the contact maintains sufficient pressure during contact. Even if the contact surface develops dirt, oxide layers, or slight wear due to long-term use, this pressure can still promote effective contact and ensure stable circuit conduction. At the same time, sufficient overtravel also reduces the evaporation and wear of the contact material during switching, slowing down the aging rate of the contacts and thus significantly extending the relay's service life. Furthermore, in vibrating operating environments, the elastic buffering effect provided by overtravel can reduce the impact of vibration on the contact state, improving the relay's shock resistance.

[0004] However, existing magnetic latching relay moving spring assemblies typically consist only of basic structures such as the main moving spring plate, the large bending plate of the moving spring, the small bending plate of the moving spring, and the moving contact (a typical mechanism is disclosed in application number CN2011204844650). Their design focuses more on achieving basic on / off functions, and there are significant shortcomings in optimizing overtravel. Due to the lack of a dedicated structure to enhance overtravel capability, traditional moving spring assemblies often struggle to provide sufficient contact pressure. When dirt or oxidation appears on the contact surface, poor contact easily occurs, affecting the relay's operational reliability. Simultaneously, the limited overtravel also causes the contacts to wear out quickly during on / off processes, shortening the relay's lifespan. Furthermore, in vibration environments, the contact state is easily disturbed, resulting in poor vibration resistance.

[0005] Therefore, in order to overcome the shortcomings of existing magnetic latching relay spring assemblies in terms of overtravel and improve the reliability, service life and shock resistance of the relay, developing a spring assembly with enhanced overtravel capability has become an urgent technical problem to be solved. Utility Model Content

[0006] To address the shortcomings of the prior art, this utility model provides a moving spring assembly for a magnetic latching relay.

[0007] The technical solution adopted by this utility model is: a moving spring assembly of a magnetic latching relay, including a main moving spring plate, a large moving spring support plate, a small moving spring support plate, and a moving contact. The main moving spring plate, the small moving spring support plate, and the large moving spring support plate are tightly connected from top to bottom. It also includes a rotating plate and an auxiliary elastic plate.

[0008] The rotating plate is rotatably connected to one end of the main plate of the movable spring;

[0009] The auxiliary elastic sheet has a "V" shaped structure, with one end connected to the rotating sheet and the other end connected to the small curved support sheet of the moving spring;

[0010] The moving contact is located below the auxiliary elastic sheet.

[0011] Furthermore, the included angle of the "V" shaped structure of the auxiliary elastic sheet ranges from 5 degrees to 60 degrees.

[0012] Furthermore, one side of the small curved support plate and the large curved support plate of the moving spring has a raised portion, and the raised portion has an arc-shaped structure.

[0013] Furthermore, the moving contact is welded to the bottom surface of the large curved support plate of the moving spring.

[0014] Furthermore, a connecting protrusion is provided at one end of the moving spring main plate that connects to the rotating plate, and rotating columns are provided on both sides of the connecting protrusion. The rotating plate is provided with a groove that matches the connecting protrusion, and rotating holes that rotate with the rotating columns are provided on both sides of the groove.

[0015] Furthermore, the upper surface of the rotating plate is provided with a thickened protrusion, and the thickened protrusion is provided with a connecting concave surface.

[0016] Furthermore, the thickness of the thickened bump is 0.1-0.4 mm.

[0017] The beneficial effects of this utility model are:

[0018] 1. Effectively enhances overtravel capability. The rotating plate is rotatably connected to the main plate of the moving spring, and the "V"-shaped auxiliary elastic plate is connected to both the rotating plate and the small curved support plate of the moving spring, forming a unique elastic linkage structure. This design can provide additional elastic deformation through the combination of the rotating plate and the auxiliary elastic plate, thereby increasing the overtravel effect. The rotating plate provides rotational freedom during operation, while the "V"-shaped auxiliary elastic plate provides elastic support during rotation, increasing overtravel and improving shock resistance, thus solving the problem of insufficient overtravel in traditional moving spring assemblies.

[0019] 2. Extended relay lifespan. Sufficient overtravel reduces mechanical wear and electrolytic corrosion of the contacts during switching processes, lowers the evaporation rate of the contact material, and slows down the aging process of the contacts. Simultaneously, the rationally designed elastic structure buffers the impact force during contact, further reducing damage to the contacts and related components, thereby significantly improving the overall lifespan of the relay.

[0020] 3. Effectively improves the relay's vibration resistance. The elastic system composed of the "V"-shaped auxiliary elastic plate and the rotating plate provides good elastic buffering for the contacts. When encountering a vibration environment, it can effectively absorb and offset vibration energy, reduce the interference of vibration on the contact state, and ensure that the contacts can maintain stable contact pressure under vibration conditions, thereby improving the applicability and reliability of the relay in various vibration scenarios.

[0021] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a side view of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the main moving spring plate and the rotating plate.

[0026] Figure 1-3 In the middle: 1. Main plate of moving spring; 2. Large curved plate of moving spring; 3. Small curved plate of moving spring; 4. Moving contact; 5. Rotating plate; 6. Auxiliary elastic plate; 7. Raised part; 8. Connecting protrusion; 9. Rotating column; 10. Groove; 11. Rotating hole; 12. Thickened protrusion; 13. Connecting concave surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] This utility model provides a moving spring assembly for a magnetic latching relay.

[0030] In this embodiment, refer to Figure 1-3 The moving spring assembly of the magnetic latching relay includes a main moving spring plate 1, a large moving spring support plate 2, a small moving spring support plate 3, and a moving contact 4. The main moving spring plate, the small moving spring support plate, and the large moving spring support plate are tightly connected from top to bottom. It also includes a rotating plate 5 and an auxiliary elastic plate 6.

[0031] The rotating plate is rotatably connected to one end of the main plate of the movable spring;

[0032] The auxiliary elastic sheet has a "V" shaped structure, with one end connected to the rotating sheet and the other end connected to the small curved support sheet of the moving spring;

[0033] The moving contact is located below the auxiliary elastic sheet.

[0034] In this embodiment, the moving spring assembly adds a rotating plate and a "V"-shaped auxiliary elastic plate to the traditional moving spring main plate, moving spring large bending support plate, moving spring small bending support plate, and moving contact. The rotating plate is rotatably connected to one end of the moving spring main plate, and the "V"-shaped auxiliary elastic plate is connected to the rotating plate at one end and linked to the moving spring small bending support plate at the other end. The moving contact is located below the auxiliary elastic plate. This structure forms an elastic linkage system, where the rotating plate can rotate relative to the moving spring main plate, and the "V"-shaped auxiliary elastic plate can store and release elastic potential energy through its own deformation. By utilizing the rotation of the rotating plate and the deformation of the "V"-shaped auxiliary elastic plate, the overtravel capability is enhanced, providing sufficient space and elastic support for the moving contact to continue moving after contact; the contact pressure of the contact point is increased; contact wear and material evaporation are reduced, extending service life; and the cooperation between the "V"-shaped structure and the rotating plate provides elastic buffering, enhancing shock resistance.

[0035] Specifically, the included angle of the "V" shaped structure of the auxiliary elastic sheet ranges from 5 degrees to 60 degrees.

[0036] In this embodiment, the reasonable included angle range ensures the stability and consistency of the elastic performance of the auxiliary elastic sheet. The overtravel force and range can be adjusted according to actual needs to further optimize the contact pressure of the contact point, ensuring stable operation under different working conditions and improving the adaptability and reliability of the component.

[0037] Specifically, one side of the small curved support plate and the large curved support plate of the moving spring has a raised portion 7, and the raised portion 7 has an arc-shaped structure.

[0038] In this embodiment, the raised portion on one side of the small and large curved support plates of the moving spring is an arc-shaped structure. The arc-shaped structure has good elasticity and cushioning performance, which can distribute the force and reduce stress concentration during the movement of the component.

[0039] Specifically, the moving contact is welded to the bottom surface of the large curved support plate of the moving spring.

[0040] In this embodiment, the moving contact and the large curved support plate of the moving spring are connected by welding. Welding can achieve a firm bond between the two, ensuring the stability and conductivity of the connection, and reducing contact resistance.

[0041] Specifically, the main plate of the moving spring is provided with a connecting protrusion 8 at one end where it connects to the rotating plate, and rotating columns 9 are provided on both sides of the connecting protrusion 8. The rotating plate is provided with a groove 10 that matches the connecting protrusion, and rotating holes 11 that rotate with the rotating columns are provided on both sides of the groove 10.

[0042] In this embodiment, the connecting protrusion at the connecting end of the moving spring main plate is adapted to the groove of the rotating plate, and the rotating posts on both sides of the connecting protrusion are rotatably engaged with the rotating holes on both sides of the groove. This structure achieves a precise and stable rotational connection between the rotating plate and the moving spring main plate, ensuring the smoothness and accuracy of the rotational motion.

[0043] Specifically, the upper surface of the rotating plate is provided with a thickened protrusion 12, and the thickened protrusion 12 is provided with a connecting concave surface 13.

[0044] In this embodiment, the thickened protrusions on the upper surface of the rotating plate and the provided connecting concave surface enhance the structural strength of this part of the rotating plate, while the connecting concave surface facilitates connection and cooperation with other components (the drive plate of the relay).

[0045] Specifically, the thickness of the thickened protrusion is 0.1-0.4 mm.

[0046] In this embodiment, the appropriate thickness allows the thickened bump to effectively enhance the strength of the rotating plate while avoiding the increase in weight and decrease in motion flexibility caused by excessive thickness; this ensures that the rotating plate maintains good motion performance and elasticity while meeting structural strength requirements, thereby improving the overall performance and reliability of the component.

[0047] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A moving spring assembly for a magnetic latching relay, comprising a main moving spring plate, a large moving spring support plate, a small moving spring support plate, and a moving contact, wherein the main moving spring plate, the small moving spring support plate, and the large moving spring support plate are tightly connected sequentially from top to bottom, characterized in that: It also includes a rotating plate and an auxiliary elastic plate; The rotating plate is rotatably connected to one end of the main plate of the movable spring; The auxiliary elastic sheet has a "V" shaped structure, with one end connected to the rotating sheet and the other end connected to the small curved support sheet of the moving spring; The moving contact is located below the auxiliary elastic sheet.

2. The moving spring assembly of the magnetic latching relay according to claim 1, characterized in that: The included angle of the "V" shaped structure of the auxiliary elastic sheet ranges from 5 degrees to 60 degrees.

3. The moving spring assembly of the magnetic latching relay according to claim 1, characterized in that: The small curved support plate and the large curved support plate of the moving spring have a raised portion on one side, and the raised portion has an arc-shaped structure.

4. The moving spring assembly of the magnetic latching relay according to claim 1, characterized in that: The moving contact is welded to the bottom surface of the large curved support plate of the moving spring.

5. The moving spring assembly of the magnetic latching relay according to claim 1, characterized in that: The main plate of the moving spring is provided with a connecting protrusion at one end where it connects to the rotating plate. Rotating columns are provided on both sides of the connecting protrusion. The rotating plate is provided with a groove that matches the connecting protrusion. Rotating holes that rotate with the rotating columns are provided on both sides of the groove.

6. The moving spring assembly of the magnetic latching relay according to claim 1, characterized in that: The upper surface of the rotating plate is provided with a thickened protrusion, and the thickened protrusion is provided with a connecting concave surface.

7. The moving spring assembly of the magnetic latching relay according to claim 6, characterized in that: The thickness of the thickened bump is 0.1-0.4 mm.

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