A super small high-power double-group magnetic latching relay

Abstract

The utility model relates to a kind of super small high-power double-group magnetic latching relay, by setting double-group conducting sheet component and static sheet component, make relay possess the ability of simultaneously controlling two groups of circuit on-off, in high-power scene, two groups of contacts jointly bear large current, effectively disperse current load, avoid single-group contact because of overheating and ablation, and the contact spacing between movable contact and static contact is carefully designed and experimentally verified, can ensure to reach 3mm safety spacing when pulling brake, reliably disconnect circuit, prevent electric leakage and short circuit, when closing brake, then precise contact can be realized, establish stable electrical connection, magnetic piece is set on both sides of each group movable contact and static contact, the magnetic field generated when relay works can optimize arc characteristic, guide arc to extinguish quickly, this not only reduces the erosion to contact, improves arc resistance, also enhances contact reliability, provides strong guarantee for the stable operation of relay in high-power environment.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to an ultra-small high-power dual-group magnetic latching relay. Background Technology

[0002] In key areas such as industrial control, power transmission, and new energy, the power requirements for relays are becoming increasingly stringent as equipment power continues to rise. When traditional single-contact relays are used in high-power scenarios, all current flows through a single contact. If the current exceeds the limit, the Joule effect generates a large amount of heat, easily causing the contact material to melt and erode, leading to poor contact, circuit breaks, and other problems, severely affecting the normal operation of the equipment. Some existing double-contact relays also have significant defects. Structurally, the two sets of contacts are not rationally distributed within the housing, resulting in low space utilization and a large relay size. Contact spacing is a key factor affecting relay performance; however, some existing double-contact relays have poorly controlled contact spacing, failing to guarantee a safe distance when disconnecting and failing to make precise contact when closing, leading to poor contact, arcing, and other phenomena. This not only affects relay performance and lifespan but may also cause safety accidents in power transmission scenarios, threatening the stable operation of the power grid. Furthermore, the auxiliary functions of existing double-contact relays are also limited. Although auxiliary contacts are provided, their number and functionality are limited, failing to meet the needs of complex circuit systems for multiple signal transmissions and controls, thus hindering the improvement of the intelligence level of related equipment. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an ultra-small high-power dual-group magnetic latching relay with multiple circuit control capabilities, strong power carrying capacity, rich electrical interfaces, and the ability to adapt to the needs of complex circuit systems.

[0004] To achieve the above objectives, this utility model employs an ultra-miniature high-power dual-group magnetic latching relay, comprising a housing, within which are a coil assembly, an armature assembly, and a push plate. The housing also contains dual-group conductive plate assemblies and corresponding dual-group stationary plate assemblies, each group of conductive plate assemblies and its corresponding stationary plate assembly arranged vertically within the housing. Each dual-group stationary plate assembly has a stationary contact, and each dual-group conductive plate assembly has a corresponding moving contact. A contact gap exists between the moving and stationary contacts. Magnetic components for generating a magnetic field are respectively positioned on either side of each moving and stationary contact within the housing. The housing also contains auxiliary stationary plate assemblies and auxiliary moving plate assemblies, both located on one side of the armature assembly and arranged vertically. The auxiliary stationary and auxiliary moving plate assemblies extend outwards from the housing through a first auxiliary slot and a second auxiliary slot, respectively.

[0005] The beneficial effects of the above structure are as follows: By setting up dual sets of conductive plate assemblies and stationary plate assemblies, the relay has the ability to simultaneously control the on / off state of two sets of circuits. In high-power scenarios, the two sets of contacts share the large current, effectively distributing the current load and preventing single sets of contacts from burning due to overheating. This significantly improves the power carrying capacity and extends the service life. Moreover, the contact spacing between the moving and stationary contacts has been carefully designed and experimentally verified. When the circuit is switched off, a safe distance of 3mm can be ensured to reliably disconnect the circuit and prevent leakage and short circuit. When the circuit is switched on, precise contact can be achieved to establish a stable electrical connection. Magnetic components are set on both sides of each set of moving and stationary contacts. The magnetic field generated when the relay is working can optimize the arc characteristics and guide the arc to extinguish quickly. This not only reduces the erosion of the contacts and improves the arc resistance, but also enhances the contact reliability, providing a strong guarantee for the stable operation of the relay in high-power environments.

[0006] This utility model further comprises an auxiliary stationary contact assembly including an auxiliary stationary contact and an auxiliary stationary contact. One end of the auxiliary stationary contact extends outward from the housing through a first auxiliary slot on the housing, and the other end of the auxiliary stationary contact is fitted with an auxiliary stationary contact. This structural design expands the electrical interface of the relay, allowing for easy connection to more external circuit components, meeting the diverse needs of complex circuit systems. Simultaneously, it facilitates precise signal transmission, improves the accuracy and stability of the relay in circuit control, and enhances the relay's adaptability to different circuit scenarios.

[0007] This utility model is further configured as follows: the auxiliary moving piece assembly includes an auxiliary moving piece and an auxiliary moving spring. One end of the auxiliary moving piece extends outward from the housing through a second auxiliary slot on the housing, and the other end of the auxiliary moving piece is provided with a first rotating shaft. The first rotating shaft is rotatably connected to the auxiliary moving spring, and the auxiliary moving spring is provided with an auxiliary moving contact corresponding to the auxiliary stationary contact. Through the above structural design, convenient connection between the auxiliary moving piece and external circuit components is achieved. The first rotating shaft provides stable mechanical support for the movement of the auxiliary moving spring, ensuring its accuracy. The setting of the auxiliary moving contact adds an additional control contact, further expanding the application function of the relay in complex circuit systems, enabling it to undertake more diverse control tasks.

[0008] This utility model is further configured such that each of the dual-set stationary plate assembly includes a stationary plate and a stationary contact. One end of the stationary plate extends outward to the outside of the housing through a socket provided on the housing, and the other end of the stationary plate is fitted with a stationary contact. During installation, the socket provides precise positioning and guidance for the stationary plate, allowing installers to quickly and accurately install it in place. The operation is simple and efficient. The extension of the stationary plate to the outside of the housing greatly facilitates the connection of external circuits, reducing connection difficulty and time costs.

[0009] This utility model is further configured such that each of the dual conductive sheet assemblies includes a conductive sheet, a shunt sheet, and a moving spring. One end of the conductive sheet extends outward to the outside of the housing through a conductive groove, and the other end of the conductive sheet is provided with a second rotating shaft. The second rotating shaft is rotatably connected to the moving spring and the shunt sheet in sequence. One end of the moving spring and the shunt sheet is provided with a moving contact corresponding to the stationary contact. This layered and orderly structural design fully utilizes the internal space of the housing, improving space utilization. The connection method of the second rotating shaft provides stable mechanical support for each component. During relay operation, when the moving contact and the stationary contact frequently come into contact and separate, it ensures that the moving spring and the shunt sheet maintain a stable relative position, avoiding loosening or misalignment, and ensuring the accuracy and reliability of the relay operation. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0011] Figure 2 This is a front view of the internal structure of the shell according to an embodiment of the present utility model.

[0012] Figure 3 This is a three-dimensional schematic diagram of the internal structure of the shell according to an embodiment of the present utility model. Detailed Implementation

[0013] like Figures 1-3 As shown, an embodiment of this utility model provides an ultra-small high-power dual-group magnetic latching relay, comprising a housing 1. The housing 1 contains a coil assembly 2, an armature assembly 3, a push plate 4, a dual-group conductive plate assembly 5, a dual-group stationary plate assembly 6, an auxiliary stationary plate assembly 7, and an auxiliary moving plate assembly 8. Each group of conductive plate assemblies 5 and the corresponding stationary plate assembly 6 are arranged vertically within the housing 1. The auxiliary stationary plate assembly 7 and the auxiliary moving plate assembly 8 are both located on one side of the armature assembly 3 and are arranged vertically, extending outward to the outside of the housing 1 through a first auxiliary slot and a second auxiliary slot respectively. The housing 1 consists of a base 11 and an upper cover 12 covering the base 11.

[0014] The auxiliary stationary plate assembly 7 includes an auxiliary stationary plate 71 and an auxiliary stationary contact 72. One end of the auxiliary stationary plate 71 extends outward to the outside of the housing 1 through the first auxiliary slot, and the other end is equipped with the auxiliary stationary contact 72, which expands the electrical interface of the relay and meets the diverse needs of complex circuit systems.

[0015] The auxiliary moving plate assembly 8 includes an auxiliary moving plate 81 and an auxiliary moving spring 82. One end of the auxiliary moving plate 81 extends outward to the outside of the housing 1 through the second auxiliary slot, and the other end is provided with a first rotating shaft 811. The first rotating shaft 811 is rotatably connected to the auxiliary moving spring 82. The auxiliary moving spring 82 is provided with an auxiliary moving contact 83 corresponding to the auxiliary stationary contact 72. The first rotating shaft 811 provides stable mechanical support for the movement of the auxiliary moving spring 82. The auxiliary moving contact 83 adds an additional control contact, expanding the application function of the relay in complex circuit systems.

[0016] Each of the two sets of stationary plate assemblies 6 includes a stationary plate 61 and a stationary contact 62. One end of the stationary plate 61 extends outward to the outside of the housing 1 through a plug-in slot opened on the housing 1, which facilitates connection with external circuits. The other end is equipped with a stationary contact 62, which is used to cooperate with the moving contact 54 to realize circuit on / off control.

[0017] Each of the dual conductive sheet assemblies 5 includes a conductive sheet 51, a moving spring 52, and a shunt sheet 53. One end of the conductive sheet 51 extends outward through a conductive groove on the housing 1 to connect to an external circuit. The other end is provided with a second rotating shaft 511, which is rotatably connected to the moving spring 52 and the shunt sheet 53 in sequence. One end of the moving spring 52 and the shunt sheet 53 are provided with a moving contact 54 corresponding to the stationary contact 62. This layered and orderly structure makes full use of the internal space of the housing 1, and the connection method of the second rotating shaft 511 provides stable mechanical support for each component, ensuring the accuracy and reliability of the relay operation.

[0018] The coil assembly 2 includes a frame 21 and an iron core 22. The frame 21 is located inside the housing 1 and provides a support structure for the entire coil assembly 2. The iron core 22 is inserted into the frame 21 and extends to the outside of the frame 21 at both ends. The two ends of the iron core 22 are respectively connected to a first yoke 23 and a second yoke 24. A winding group 25 is wound on the frame 21 to generate a magnetic field. At the same time, a pin 26 is also inserted on the frame 21. The pin 26 extends outward corresponding to the pin slot opened on the housing 1 so as to connect with an external control circuit to realize the control of the relay's working state.

[0019] The armature assembly 3 consists of a plastic part 31, a first armature plate 32, and a second armature plate 33. A magnet 34 is provided inside the plastic part 31 to provide a magnetic foundation for the armature assembly 3. The first armature plate 32 and the second armature plate 33 are respectively inserted into the plastic part 31, and both ends extend to the outside of the plastic part 31. The first yoke 23 in the coil assembly 2 corresponds to one end of the first armature plate 32 and the second armature plate 33, and the second yoke 24 corresponds to the other end of the first armature plate 32 and the second armature plate 33. This arrangement allows the magnetic field generated by the coil assembly 2 to act on the armature assembly 3, realizing the magnetic holding function. In addition, a pusher 4 is correspondingly provided on the plastic part 31, which can push the double set of conductive plate assemblies 5 when the armature assembly 3 is activated.

[0020] It should be noted that only one set of components is marked in detail in the diagram, but the entire structure contains two sets of the same components.

[0021] Based on the above reasonable component layout and structural design, the working principle of this ultra-miniature high-power dual-group magnetic latching relay is as follows: When the winding group 25 of the coil assembly 2 is energized to generate a magnetic field, the magnetic field acts on the armature assembly 3, causing the armature assembly 3 to actuate, driving the push plate 4 to move. The push plate 4 pushes the dual-group conductive plate assembly 5, causing the moving contact 54 to contact or separate from the stationary contact 62, thereby realizing the simultaneous control of the on / off of two groups of circuits. In high-power scenarios, the two groups of contacts share the large current, effectively distributing the current load, avoiding the burning of a single group of contacts due to overheating, significantly improving the power carrying capacity, and extending the service life. At the same time, the moving contact 54... The contact 54 and the stationary contact 62 have a designed and experimentally verified contact spacing. When the switch is pulled, a safe distance of 3mm is guaranteed to ensure reliable circuit disconnection and prevent leakage and short circuit. When the switch is closed, precise contact can be achieved to establish a stable electrical connection. In addition, magnetic components 10 for generating magnetic fields are respectively provided on both sides of each set of moving contacts 54 and stationary contacts 62 inside the housing 1. The magnetic field generated when the relay is working can optimize the arc characteristics, guide the arc to extinguish quickly, reduce the erosion of the contacts, improve the arc resistance, and enhance the contact reliability, providing a strong guarantee for the stable operation of the relay in high-power environments.

[0022] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A miniature high-power dual-group magnetic latching relay, comprising a housing, wherein the housing contains a coil assembly, an armature assembly, and a push plate, characterized in that: The housing contains two sets of conductive sheet assemblies and corresponding two sets of stationary sheet assemblies. Each set of conductive sheet assemblies and its corresponding stationary sheet assembly are arranged vertically within the housing. Each set of stationary sheet assemblies has a stationary contact, and each set of conductive sheet assemblies has a corresponding moving contact. There is a contact gap between the moving contact and the stationary contact. Magnetic components for generating a magnetic field are respectively arranged on both sides of each set of moving contact and stationary contact within the housing. The housing also contains auxiliary stationary sheet assemblies and auxiliary moving sheet assemblies, both located on one side of the armature assembly and arranged vertically. The auxiliary stationary sheet assemblies and auxiliary moving sheet assemblies extend outward to the outside of the housing through a first auxiliary slot and a second auxiliary slot opened on the housing, respectively.

2. The ultra-miniature high-power dual-group magnetic latching relay according to claim 1, characterized in that: The auxiliary stationary plate assembly includes an auxiliary stationary plate and an auxiliary stationary contact. One end of the auxiliary stationary plate extends outward to the outside of the housing through a first auxiliary slot opened on the housing, and the other end of the auxiliary stationary plate is equipped with an auxiliary stationary contact.

3. The ultra-miniature high-power dual-group magnetic latching relay according to claim 2, characterized in that: The auxiliary moving plate assembly includes an auxiliary moving plate and an auxiliary moving spring. One end of the auxiliary moving plate extends outward to the outside of the housing through a second auxiliary slot opened on the housing. The other end of the auxiliary moving plate is provided with a first rotating shaft. The first rotating shaft is rotatably connected to the auxiliary moving spring. The auxiliary moving spring is provided with an auxiliary moving contact corresponding to the auxiliary stationary contact.

4. The ultra-miniature high-power dual-group magnetic latching relay according to claim 1, characterized in that: Each of the dual-set stationary plate assemblies includes a stationary plate and a stationary contact. One end of the stationary plate extends outward to the outside of the housing through a slot opened on the housing, and the other end of the stationary plate is equipped with a stationary contact.

5. The ultra-miniature high-power dual-group magnetic latching relay according to claim 4, characterized in that: Each of the dual conductive sheet assemblies includes a conductive sheet, a current shunt sheet, and a moving spring sheet. One end of the conductive sheet extends outward to the outside of the housing through a conductive groove opened on the housing. The other end of the conductive sheet is provided with a second rotating shaft. The second rotating shaft is rotatably connected to the moving spring sheet and the current shunt sheet in sequence. One end of the moving spring sheet and the current shunt sheet are provided with a moving contact corresponding to the stationary contact.

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