Relay and electricity meter

Abstract

The present disclosure relates to a relay and an electricity meter. The relay comprises: a moving contact unit, comprising a moving spring and a moving contact arranged on one side of the moving spring; a static contact unit, comprising a static contact, wherein the static contact is opposite to the moving contact; and an arc chute, arranged close to the static contact and the moving contact. In the present disclosure, the arc chute is arranged at the position close to the static contact and the moving contact, when an arc is generated, the arc chute can guide the arc between grids, and the arc is quickly extinguished by means of mechanisms such as segmentation and cooling, thereby significantly improving the arc extinguishing performance of the relay, prolonging the service life of components such as an electromagnetic system, and reducing potential safety hazards caused by arcs.

Description

Relays and meters

[0001] Related applications

[0002] This disclosure claims priority to Chinese patent application No. 2024232530956, filed on December 27, 2024, entitled "Relay and Meter", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of electronic control device technology, and in particular to relays and meters. Background Technology

[0004] With the development of technology, the types of industrial and household electrical appliances are constantly increasing, and the requirements for power supply and electronic control devices are also gradually increasing. Relays are a common type of electronic control device, and to meet current usage needs, they require designs with larger contact gaps and lower contact resistance.

[0005] Since the moving contact unit in a common bridge relay has contacts at both ends, the overall contact resistance is relatively large. Therefore, the bridge relay is changed to a non-bridge structure to reduce the contact resistance and meet the requirement of large contact gap.

[0006] However, the flaring problem between the contacts of non-bridge relays is quite serious. The arcing range is uncontrollable and it is easy to burn the electromagnetic system connected to the moving contact unit, which is detrimental to safety. Summary of the Invention

[0007] Based on this, a relay and meter are provided to reduce the risk of electric arc erosion of components such as electromagnetic systems.

[0008] This disclosure provides a relay, including: a moving contact unit, including a moving spring and a moving contact disposed on one side of the moving spring; a stationary contact unit, including a stationary contact opposite to the moving contact; and an arc-extinguishing grid disposed adjacent to the stationary contact and the moving contact.

[0009] According to one embodiment of this disclosure, one end of the moving touch unit facing a first direction is adapted to approach or move away from the stationary touch unit, and the other end of the moving touch unit facing the opposite direction of the first direction is fixed relative to the stationary touch unit.

[0010] According to one embodiment of this disclosure, the arc-extinguishing grid is located on one side of the contact position of the stationary contact and the moving contact in the first direction.

[0011] According to one embodiment of this disclosure, the arc-extinguishing grid includes a mounting plate and a plurality of grid plates. The mounting plate is fixed in position, and the plurality of grid plates are located on the side of the mounting plate near the stationary contact and the moving contact, and are fixedly connected to the mounting plate.

[0012] According to one embodiment of the present disclosure, at least a portion of the grid plate is provided with an arc-inducing structure, the arc-inducing structure being angled to the grid plate, one end of the arc-inducing structure being fixedly connected to the grid plate, and the other end extending toward the contact position close to the stationary contact and the moving contact.

[0013] According to one embodiment of this disclosure, the moving contact unit includes a plurality of moving contacts, the stationary contact unit includes a plurality of stationary contacts, the plurality of moving contacts and the plurality of stationary contacts are arranged at intervals along a second direction, and there is a one-to-one correspondence between the plurality of moving contacts and the plurality of stationary contacts; at least a portion of the grid plate is provided with a plurality of arc-guiding structures, the plurality of arc-guiding structures on the same grid plate are arranged at intervals along the second direction, and there is a one-to-one correspondence between the plurality of contact positions formed by the plurality of moving contacts and the plurality of stationary contacts.

[0014] According to one embodiment of this disclosure, the arrangement direction of the plurality of grids is parallel to the arrangement direction of the moving contact unit and the stationary contact unit.

[0015] According to one embodiment of this disclosure, the mounting plate is provided with a perforated hole that penetrates the mounting plate.

[0016] According to one embodiment of this disclosure, it further includes: a housing having a mounting cavity, wherein the moving contact unit, the stationary contact unit and the arc extinguishing grid are located within the mounting cavity, and the housing is provided with an arc extinguishing hole, the arc extinguishing hole communicating with the mounting cavity and the outer side of the housing and being disposed adjacent to the arc extinguishing grid.

[0017] According to one embodiment of this disclosure, the arc-extinguishing hole includes a first through hole located at a corner of the housing.

[0018] According to one embodiment of this disclosure, the outer casing includes a first housing and a second housing, the first housing and the second housing being detachably connected, and the arc-expelling hole includes a second through hole located at the junction of the first housing and the second housing.

[0019] This disclosure also provides an electricity meter that includes the relay described in the above embodiments.

[0020] The aforementioned relays and meters have arc-extinguishing grids installed near the stationary and moving contacts. When an arc is generated, the arc-extinguishing grids can guide the arc to the grid between the grids and quickly extinguish the arc through mechanisms such as segmentation and cooling. This can significantly improve the arc-extinguishing performance of the relays, extend the service life of components such as electromagnetic systems, and reduce safety hazards caused by arcs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments or conventional technologies of this disclosure, the accompanying drawings used in the description of the embodiments or conventional technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0022] Figure 1 is a schematic diagram of the layout structure of a relay in the prior art.

[0023] Figure 2 is a schematic diagram of a relay in a closed state according to an embodiment of the present disclosure.

[0024] Figure 3 is a schematic diagram of the structure of a relay in the off state according to an embodiment of the present disclosure.

[0025] Figure 4 is a schematic diagram of a relay in a closed state according to another embodiment of this disclosure.

[0026] Figure 5 is a partial cross-sectional view of a relay in a closed state according to another embodiment of this disclosure.

[0027] Figure 6 is a schematic diagram of the structure of a relay in the closed state according to another embodiment of this disclosure.

[0028] Figure 7 is one of the schematic diagrams showing the connection structure and the working relationship between the moving contact unit in a relay according to an embodiment of this disclosure.

[0029] Figure 8 is a second schematic diagram of the connection structure and the working relationship between the moving contact unit in a relay according to an embodiment of this disclosure.

[0030] Figure 9 is a schematic diagram of the moving contact unit structure in a relay provided in an embodiment of this disclosure.

[0031] Figure 10 is a schematic diagram of the mounting part and the adapter shaft mating structure in a relay according to an embodiment of the present disclosure.

[0032] Figure 11 is a schematic diagram showing the mounting structure in a relay according to an embodiment of the present disclosure.

[0033] Figure 12 is a schematic diagram of the mounting part and the adapter shaft mating structure in a relay according to another embodiment of the present disclosure.

[0034] Figure 13 is a schematic diagram of the connection structure between the connecting plate and the adapter shaft in a relay according to another embodiment of this disclosure.

[0035] Figure 14 is a schematic diagram of a relay in a closed state according to another embodiment of this disclosure.

[0036] Figure 15 is a schematic diagram of the cooperation structure between the adapter shaft and the fixing frame in a relay according to an embodiment of the present disclosure.

[0037] Figure 16 is a schematic diagram of the moving spring mounting structure in a relay according to an embodiment of the present disclosure.

[0038] Figure 17 is a schematic diagram of the structure of a stationary conductor magnet in a relay according to an embodiment of the present disclosure.

[0039] Figure 18 is a partial structural diagram of the housing of a relay provided in an embodiment of the present disclosure.

[0040] Figure 19 is a schematic diagram of the structure of a stationary conductor magnet in a relay according to another embodiment of this disclosure.

[0041] Figure 20 is a schematic diagram of the structure of a static conductor magnet in a relay provided in another embodiment of this disclosure.

[0042] Figure 21 is a schematic diagram of the cooperation structure between a stationary magnet and a fixing member in a relay according to another embodiment of this disclosure.

[0043] Figure 22 is a partial cross-sectional view of the mating structure of a stationary magnet and a fixing member in a relay according to another embodiment of this disclosure.

[0044] Figure 23 is one of the schematic diagrams showing the connection structure and the working relationship of the moving contact unit in a relay according to another embodiment of this disclosure.

[0045] Figure 24 is a second schematic diagram of the connection structure and the working relationship between the moving contact unit in a relay according to another embodiment of this disclosure.

[0046] Figure 25 is a schematic diagram of the connection structure and the working relationship of the moving contact unit in a relay according to another embodiment of this disclosure.

[0047] Figure 26 is a schematic diagram of a connection structure in a relay according to another embodiment of the present disclosure.

[0048] Figure 27 is a schematic diagram of a connection structure in a relay according to another embodiment of this disclosure.

[0049] Figure 28 is a second schematic diagram of a connection structure in a relay according to another embodiment of this disclosure.

[0050] Figure 29 is a schematic diagram of the connection relationship between the first connector and the moving spring in a relay according to another embodiment of this disclosure.

[0051] Figure 30 is a schematic diagram of the connection relationship between the push card and the connecting shaft in a relay according to an embodiment of the present disclosure.

[0052] Figure 31 is a schematic diagram of an arc-extinguishing gate structure in a relay provided in an embodiment of this disclosure.

[0053] Figure 32 is a schematic diagram of an arc-removing hole structure in a relay according to an embodiment of the present disclosure.

[0054] Figure 33 is a schematic diagram of the structure of an electricity meter provided in one embodiment of this disclosure.

[0055] Figure 34 is one of the structural schematic diagrams of an electricity meter provided in an embodiment of this disclosure.

[0056] Reference numerals: 10, relay; 20, meter; 21, inner cavity; 22, terminal block; 23, wiring port; 24, lead end; 100, outer casing; 110, first casing; 120, second casing; 121, first protrusion; 122, second protrusion; 123, slot; 130, arc-extinguishing hole; 131, first through hole; 132, second through hole; 140, second limiting hole; 150, insertion slot; 200. Pushing system; 201. Coil; 210. Armature assembly; 220. Pushing clip; 221. Through hole; 222. Shaft hole; 223. Hanging shaft; 230. Connecting structure; 231. First connecting member; 2311. Fixing part; 2312. Ear; 2313. Hanging hole; 232. Second connecting member; 233. Compression spring; 234. Pull rod; 2341. Hook; 2342. Pressure plate; 2343. First pressing part; 2344. Second pressing part; 240. Rotating part; 300. Contact system; 310. Static contact unit; 311. Static spring; 312. Static contact; 313. Static magnetic conductor; 3131. First magnetic conductor; 3132. Second magnetic conductor; 3133. Break hole; 3134. First extension portion; 3135. Second extension portion; 3136. Fixing member; 3137. Hidden groove; 320. Moving contact unit; 321. Moving spring; 3211. First straight portion; 3212. Arc-shaped portion; 3213. Extension portion; 3214. Second straight portion; 322. Moving contact; 323. Moving magnetic conductor; 324. Connecting portion; 325. Adapter shaft; 326. Connecting plate; 327. Flexible connecting wire; 328. Mounting portion; 329. Through shaft hole; 400. Terminal group; 410. First terminal; 420. Second terminal; 500, Arc extinguishing grid; 510, Mounting plate; 511, Hollow hole; 520, Grid plate; 530, Arc ignition structure; 600, Fixing bracket; 610, Plug-in part. Detailed Implementation

[0057] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0058] To make the above-described objects, features, and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this disclosure. However, this disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this disclosure. Therefore, this disclosure is not limited to the specific embodiments disclosed below.

[0059] In the description of this disclosure, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0060] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0062] In this disclosure, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this disclosure are for illustrative purposes only and do not represent the only possible implementation.

[0064] Referring to Figure 1, which shows a schematic diagram of a relay 10 in the prior art, conventional relays 10 typically employ a layout where the armature assembly 210, rotating component 240, and contact system 300 are arranged sequentially in the same direction to provide a larger contact gap. This layout results in a larger dimension along the arrangement direction and occupies more assembly space. Without adjusting the layout or structure of other components inside the electrical appliance such as the meter 20, it is difficult to use this type of relay 10. Therefore, a relay 10 structure with a more reasonable layout, less assembly space occupation, and better applicability is needed. In view of this, this disclosure provides a relay 10.

[0065] Referring to Figures 2 and 3, in one embodiment of the present disclosure, the relay 10 includes a drive system 200, a contact system 300, and a terminal group 400.

[0066] The actuation system 200 includes a coil 201, the axis of which is oriented along the third direction Y. The contact system 300 is located on the third direction Y side of the actuation system 200. The contact system 300 includes a moving contact unit 320 and a stationary contact unit 310 arranged along the third direction Y. The moving contact unit 320 is connected to the actuation system 200. One end of the moving contact unit 320 is fixed relative to the stationary contact unit 310, and the other end is adapted to move closer to or further away from the stationary contact unit 310 under the drive of the actuation system 200. After the coil 201 is energized, the actuation system 200 can drive the moving contact unit 320 to swing around one end of the moving contact unit 320 as the rotation center, realizing the closing and opening functions. The aforementioned fixed relative position between one end of the moving contact unit 320 and the stationary contact unit 310 means that there is no relative movement between the two ends.

[0067] Terminal group 400 is located on the side of contact system 300 opposite to actuation system 200, connecting stationary contact unit 310 and moving contact unit 320, and extending in the third direction Y. Terminal group 400 can connect the internal contacts of relay 10 to external circuits through suitable interfaces and connection methods to achieve current switching control. In the control circuit, terminal group 400 can also transmit control signals to achieve remote or automated control of relay 10 operation.

[0068] In this embodiment, by redesigning the arrangement of the drive system 200, contact system 300 and terminal group 400, the overall layout of the relay 10 is made more compact and reasonable, effectively reducing the space occupied.

[0069] In some embodiments, the relay 10 further includes an armature assembly 210 located on one side of the coil 201 in a first direction X, the rotation axis of the armature assembly 210 along a second direction Z, and the contact system 300 located on the third direction side of the armature assembly 210.

[0070] The first direction X, the second direction Z, and the third direction Y are all perpendicular to each other.

[0071] Compared to conventional relays 10, the relay 10 in this embodiment, through its rational three-dimensional spatial layout, avoids the problem of excessive size caused by sequential arrangement along a single direction, thus significantly reducing the assembly space requirement. Due to the optimized layout and structure, the relay 10 achieves a compact structure. The relay 10 in this embodiment can more easily adapt to the internal layout requirements of electrical appliances such as the meter 20, without requiring additional layout or structural adjustments to other components, improving installation flexibility and convenience, and enhancing overall performance and reliability.

[0072] Furthermore, the swing arc length of the arm end of the armature assembly 210 directly affects the size of the contact gap. In the arrangement of this embodiment, the component of the movement path of the arm end of the arm in the third direction Y is larger, allowing the moving end of the moving contact unit 320 to have a larger movement component than the stationary contact unit 310, thus meeting the requirement for a large contact gap. Moreover, the component of the movement path of the arm end of the arm in the first direction X is smaller, that is, the component perpendicular to the contact direction of the moving contact unit 320 and the stationary contact unit 310 is smaller. This results in less axial movement of the structure connecting the arm of the armature assembly 210 and the moving contact unit 320 along the contact direction perpendicular to the moving contact unit 320 and the stationary contact unit 310, making the operation of the relay 10 more stable.

[0073] Furthermore, the non-bridge-type moving contact unit 320 design can meet the requirements of large contact gaps. On the other hand, it only requires contact connection at the mating position of the moving contact unit 320 and the stationary contact unit 310, while other positions can use wire connection. Compared with the bridge-type moving contact unit 320 design, it has fewer contacts and therefore lower resistance, which can better meet the current standard requirements for resistance value.

[0074] In some embodiments, the relay 10 further includes a housing 100 having a mounting cavity, within which the actuation system 200 and contact system 300 are located, and the first terminal 410 and second terminal 420 extend from the mounting cavity to the outside of the housing 100. The housing 100 prevents dust, moisture, and other contaminants from entering the relay 10, thereby protecting critical components such as the actuation system 200 and contact system 300 from damage. The relay 10 generates heat during operation; therefore, the housing 10's operating temperature is kept within a reasonable range.

[0075] In some embodiments, the terminal group 400 includes a first terminal 410 and a second terminal 420 extending along a third direction Y. The width direction of the first terminal 410 and the second terminal 420 is along the second direction Z, and the thickness direction of the first terminal 410 and the second terminal 420 is along the first direction X. The first terminal 410 is connected to the stationary contact unit 310, and the second terminal 420 is connected to the moving contact unit 320.

[0076] Furthermore, the relay 10 also includes a plurality of pins extending along the second direction Z, and one end of the pins being fixedly connected to one side of the first terminal 410 or the second terminal 420 in the width direction.

[0077] In some other embodiments, the width direction of the first terminal 410 and the second terminal 420 may also be other directions, for example, the width direction of the first terminal 410 and / or the second terminal 420 may be along the second direction Z, etc.

[0078] In this embodiment, both the first terminal 410 and the second terminal 420 extend along the third direction Y and are led out towards the side away from the contact system 300 along the contact engagement direction (i.e., the third direction Y). This facilitates connection to external terminal block connectors without twisting, resulting in less copper consumption and easier processing. Furthermore, the width direction of both the first terminal 410 and the second terminal 420 is along the second direction Z. This facilitates direct processing of the pins in the second direction Z, enabling direct insertion and mating with the bottom PCB board without bending the pins.

[0079] Referring to Figure 6, when the relay 10 of this embodiment is installed in an electrical appliance such as the meter 20, it can also be bent according to the wiring port 23 of the appliance. For example, as shown in the figure, the part of the second terminal 420 located outside the housing 100 is bent at 90°.

[0080] Referring to Figures 4 and 5, in some embodiments, the moving contact unit 320 includes a moving spring 321. For ease of description, the two ends of the moving spring 321 are defined as a first end and a second end, respectively. In this embodiment, the first end of the moving spring 321 is adapted to move closer to or further away from the stationary contact unit 310 under the drive of the pushing system 200, and the second end of the moving spring 321 is fixed in a fixed position relative to the stationary contact unit 310.

[0081] Furthermore, the movable contact unit 320 also includes a movable contact 322, which is fixedly disposed on the side of the movable spring 321 near the stationary contact unit 310, and the fixed position of the movable contact 322 on the movable spring 321 is located near the end of the movable spring 321 in the first direction X (i.e., near the first end). The stationary contact unit 310 includes a stationary spring 311 and a stationary contact 312, with the stationary contact 312 located on the side of the stationary spring 311 near the movable spring 321. The stationary spring 311 is angled and fixedly connected to the first terminal 410.

[0082] When the first end of the moving spring 321 approaches the stationary contact unit 310 until the moving contact 322 contacts the stationary contact 312, the moving contact unit 320 and the stationary contact unit 310 are connected. When the first end of the moving spring 321 moves away from the stationary contact unit 310 until the moving contact 322 separates from the stationary contact 312, the moving contact unit 320 and the stationary contact unit 310 are disconnected.

[0083] In some embodiments, the movable contact unit 320 further includes a connecting portion 324, which is angled and fixedly connected to the second terminal 420. The second end of the movable spring 321 is electrically connected to the connecting portion 324. For example, the movable spring 321 and the connecting portion 324 are indirectly connected via a flexible wire harness, or the movable spring 321 and the connecting portion 324 are directly fixedly or movably connected. When the movable spring 321 and the connecting portion 324 are indirectly connected via a flexible wire harness, the movable spring 321 and the connecting portion 324 can be connected via one or more wire harnesses, without specific limitations. For example, when the movable spring 321 and the connecting portion 324 are connected via a single wire harness, a wire harness with a larger cross-sectional area can be used for the connection, while when the movable spring 321 and the connecting portion 324 are connected via multiple wire harnesses, a wire harness with a smaller cross-sectional area can be used for the connection.

[0084] In this embodiment, the extension direction and width direction of the connecting portion 324 are not specifically limited. For example, the connecting portion 324 extends along the first direction X, and the width direction of the connecting portion 324 is along the second direction Z; or, the extension direction of the connecting portion 324 intersects the first direction X, and the width direction of the connecting portion 324 is along the third direction Z, etc. In addition, the plane where the connecting portion 324 is located and the plane where the movable spring 321 is located can be coplanar or non-coplanar.

[0085] Optionally, the angle between the stationary spring 311 and the first terminal 410, and the angle between the connecting portion 324 and the second terminal 420, are 90° or close to 90° (e.g., 85° to 95°). This facilitates a spatial arrangement of the stationary contact unit 310, the moving contact unit 320, and the terminal group 400 along the third direction Y. Furthermore, the angles between the stationary spring 311 and the first terminal 410, and between the connecting portion 324 and the second terminal 420, can be adaptively set according to the swing trajectory of the moving spring 321, which is beneficial for the relative parallelism of the surfaces when the moving contact 322 and the stationary contact 312 are in contact and closed.

[0086] Optionally, when the moving contact 322 is in contact with the stationary contact 312, the stationary spring 311 is parallel to the moving spring 321. For example, when the moving contact 322 is in contact with the stationary contact 312, the stationary spring 311 and the moving spring 321 form equal angles with the first direction X.

[0087] This allows the stationary spring 311 to better match the striking amplitude of the moving spring 321.

[0088] Optionally, the stationary spring 311 and the first terminal 410 are integrally bent and formed, and / or the connecting portion 324 and the second terminal 420 are integrally bent and formed. By integrating the stationary spring 311 and the first terminal 410 into a single component, and / or integrating the connecting portion 324 and the second terminal 420 into a single component, the manufacturing process can be simplified, and the difficulty and cost of production and assembly can be reduced. In addition, integral molding has lower resistance and higher structural strength compared to welding, thus effectively improving product performance.

[0089] Furthermore, with the meter pin positions fixed, the terminal lead-out positions are relatively fixed. By connecting the connecting part 324 to the moving spring 321, the effective length of the moving spring 321 can be extended. This helps to increase the rotational lever arm of the moving spring 321, thereby reducing the reaction force when the moving spring 321 undergoes elastic deformation. It also facilitates the design and installation of the moving spring 321.

[0090] Referring to Figure 23, in some other embodiments, the moving contact unit 320 further includes a connecting portion 324 and a folded portion. The connecting portion 324 connects the second terminal 420 and the folded portion, and the connecting portion 324 is angled to both the second terminal 420 and the folded portion. The folded portion is fixedly connected to the second end of the moving spring 321. For example, the connecting portion 324 extends along the X direction, and the folded portion extends along the Y direction. One end of the connecting portion 324 is fixedly connected to the second terminal 420, and the other end is fixedly connected to the folded portion. The second end of the moving spring 321 is parallel and attached to the folded portion, and is fixedly connected by means such as welding or bolting. The connecting portion 324 can extend the effective length of the moving spring 321, increase the rotational lever arm of the moving spring 321, and reduce the reaction force when the moving spring 321 undergoes elastic deformation. The folded portion can widen the distance between the lead-out end and the moving spring on the Y axis, reducing the repulsive effect of the reverse current between the moving spring 321 and the stationary spring 311.

[0091] To meet the requirement of a larger contact gap (greater than or equal to 5.5 mm), this embodiment also improves the structure of the moving contact unit 320. Two optional forms of the moving contact unit 320 will be described below by way of example.

[0092] Referring to Figures 4 and 7, as one optional configuration, the movable spring 321 includes a bent portion and a straight portion. At least a portion of the bent portion is arc-shaped, and the straight portion extends in a straight line. One end of the straight portion is fixedly connected to one end of the bent portion. The statement that at least a portion of the bent portion is arc-shaped means that at least a portion of the extension path of the bent portion is arc-shaped. For example, the entire extension path of the bent portion is arc-shaped, or a portion of the extension path of the bent portion is arc-shaped while another portion is straight. Furthermore, the extension path of the bent portion is not limited to including only one arc-shaped portion. For example, the extension path of the bent portion includes two or more arc-shaped portions connected by a straight path, or the arc-shaped portions are directly connected, etc.

[0093] In some embodiments, the straight portion includes a first straight portion 3211, which is fixedly connected to the end of the bent portion, and the end of the first straight portion 3211 facing away from the bent portion constitutes the first end of the movable spring 321; and / or, the straight portion includes a second straight portion 3214, which is fixedly connected to the end of the bent portion, and the end of the second straight portion 3214 facing away from the bent portion constitutes the second end of the movable spring 321.

[0094] In some embodiments, the movable spring 321 includes a first straight portion 3211, a bent portion, and a second straight portion 3214 connected in sequence. The movable contact 322 is located on the side of the first straight portion 3211 near the stationary spring 311, and the second straight portion 3214 is fixed in position relative to the stationary contact unit 310. The first straight portion 3211 and the second straight portion 3214 extend in a straight line. The extension direction of the first straight portion 3211 and the extension direction of the second straight portion 3214 may be parallel or intersecting. In some embodiments, the extension direction of the first straight portion 3211 is parallel to the extension direction of the second straight portion 3214. The second straight portion 3214 is fixed in position. Specifically, the second straight portion 3214 is fixedly connected to the connecting portion 324 and / or the outer shell 100. In some embodiments, the second straight portion 3214 is fitted to the connecting portion 324 and riveted to fix it. In order to facilitate the connection between the second straight portion 3214 and the connecting portion 324, the connecting portion 324 can be arranged at an angle or a section parallel to the second straight portion 3214 can be provided on the connecting portion 324.

[0095] In this embodiment, the moving spring 321 achieves its function of fixing one end relative to the stationary contact unit 310 and moving the other end closer to or further away from the stationary contact unit 310 under the drive of the pushing system 200, relying on its own deformation. It is understood that with this moving spring 321 mounting structure, the greater the swing amplitude of the moving spring 321, the greater the reaction force generated by the moving spring 321. A large reaction force will affect the matching of the suction and reaction forces, thus making it difficult to meet the requirements of large contact gaps. To solve this problem, the moving spring 321 in this embodiment is provided with a bent portion, which allows the deformation generated by the moving spring 321 to be mainly concentrated at the bent portion, which is beneficial to increasing the deformability of the moving spring 321 and reducing the reaction force.

[0096] In some embodiments, the bent portion includes an arcuate portion 3212 and an extension portion 3213. The extension path of the arcuate portion 3212 is arcuate, and one end of the arcuate portion 3212 is connected to the extension portion 3213. The extension portion 3213 extends in a straight line, and the extension path of the extension portion 3213 is tangent to the extension path of the arcuate portion 3212. A movable contact 322 may be provided at the end of the extension portion 3213 away from the arcuate portion 3212, or it may be connected to one of the first straight portion 3211, the second straight portion 3214, or the connecting portion 324. In some embodiments, the end of the arcuate portion 3212 away from the extension portion 3213 is connected to the first straight portion 3211, and the end of the extension portion 3213 away from the arcuate portion 3212 is connected to the second straight portion 3214. The second straight portion 3214 is connected to the connecting portion 324.

[0097] In this embodiment, the arc-shaped portion 3212 serves as the main deformation location of the movable spring 321. By connecting the extension portion 3213 to one end of the arc-shaped portion 3212, on the one hand, the plane containing the first straight portion 3211 and the plane containing the second straight portion 3214 are made to be out of plane, thereby facilitating the installation of the movable spring 321. On the other hand, the lever arm of the force exerted by the first straight portion 3211 and the second straight portion 3214 on the arc-shaped portion 3212 can be increased, making the arc-shaped portion 3212 easier to bend and thus reducing the reaction force generated when the movable spring 321 bends.

[0098] In some embodiments, the middle of the extension path of the arc-shaped portion 3212 bends away from the stationary spring 311. This can prevent interference between the arc-shaped portion 3212 and the stationary spring 311, and make it easier for the moving spring 321 to bend in the arc-shaped portion 3212, thereby reducing the reaction force generated when the moving spring 321 bends.

[0099] In some embodiments, the movable spring 321 includes a plurality of stacked sub-springs, with a gap formed between adjacent sub-springs at least in the arcuate portion 3212. With the same cross-sectional thickness, the movable spring 321 formed by combining multiple stacked sub-springs has better flexibility, is easier to swing, and has less reaction force compared to a one-piece movable spring 321. Furthermore, by providing a gap in the arcuate portion 3212, deformation space can be provided for the sub-springs, preventing interference between the sub-springs at the bends, which could lead to excessive rigidity and jamming.

[0100] Optionally, the multiple sub-springs of the moving spring 321 are riveted together. Further, one end of the multiple sub-springs is riveted together with the moving contact 322, and the other end of the multiple sub-springs is riveted together with the connecting part 324.

[0101] Referring to Figures 2 and 3, as another optional form, the moving contact unit 320 also includes a transition shaft 325, which is fixed in relative position to the stationary contact unit 310. The moving spring 321 is connected to the pushing system, and one end of the moving spring 321 is connected to the transition shaft 325. The end of the moving spring 321 connected to the transition shaft 325 is fixed in relative position to the stationary contact unit 310, and the other end is adapted to move closer to or further away from the stationary contact unit 310 under the drive of the pushing system 200.

[0102] The distance between the moving contact 322 and the stationary contact 312 can be changed by rotating the moving spring 321 to change its angle. During this process, the moving spring 321 does not need to deform or only deforms slightly. Therefore, the maximum contact gap that can be formed between the moving contact 322 and the stationary contact 312 is not affected by the material and structure of the moving spring 321 itself, which is beneficial to meeting the requirements of a large contact gap.

[0103] Referring to Figures 9 and 15, in some embodiments, the adapter shaft 325 is connected to the housing 100. The end of the moving spring 321 of the moving contact unit 320 away from the moving contact 322 is rotatably connected to the housing 100 via the adapter shaft 325.

[0104] It is worth noting that the aforementioned rotatable connection between the adapter shaft 325 and the housing 100 can be either that the adapter shaft 325 and the housing 100 are relatively fixed, and the end of the moving spring 321 facing away from the moving contact 322 is rotatably connected to the adapter shaft 325, or that the end of the moving spring 321 facing away from the moving contact 322 is fixedly connected to the adapter shaft 325, and the adapter shaft 325 is rotatably connected to the housing 100. Furthermore, the connection between the moving spring 321 and the adapter shaft 325, and between the adapter shaft 325 and the housing 100, can be either direct or indirect.

[0105] In some embodiments, multiple moving springs 321 are provided, arranged along the second direction Z. Each moving spring 321 has a moving contact 322 and is connected to the push system 200. All moving springs 321 can rotate under the drive of the push system 200, causing the moving contact 322 to move closer to or further away from the stationary contact 312. Correspondingly, multiple stationary springs 311 are provided, each with a stationary contact 312. There is a one-to-one correspondence between the multiple stationary springs 311 and the multiple moving springs 321, and between the multiple moving contacts 322 and the multiple stationary contacts 312. By providing multiple moving springs 321 and corresponding moving contacts 322, multiple stationary springs 311, and multiple stationary contacts 312, it is beneficial to increase the overall current conduction area, thereby reducing resistance and lowering power loss.

[0106] Referring to Figure 9, in some embodiments, the moving contact unit 320 further includes a connecting plate 326. Multiple moving springs 321 are provided, arranged along the second direction Z, and each is connected to the pushing system 200. The connecting plate 326 is fixedly attached to the sidewalls of the multiple moving springs 321. The sidewalls where the moving springs 321 connect to the connecting plate 326 are located on the radial side of the moving springs 321 on the adapter shaft 325. When the extending directions of the multiple moving springs 321 are parallel, the sidewalls where the multiple moving springs 321 connect to the connecting plate 326 are coplanar. For example, the connecting plate 326 is fixedly attached to the side of the multiple moving springs 321 closest to the stationary contact unit 310, or the connecting plate 326 is fixedly attached to the side of the multiple moving springs 321 away from the stationary contact unit 310.

[0107] The connecting plate 326 allows multiple moving springs 321 to be connected as a whole, facilitating the installation of multiple moving springs 321 and enabling multiple moving springs 321 to rotate together in a direction closer to or further away from the stationary contact unit 310.

[0108] Understandably, during prolonged use of the relay 10, the moving contact 322 or the stationary contact 312 may burn out, causing the vertices of multiple moving contacts 322 to be out of plane or the vertices of multiple stationary contacts 312 to be out of plane. This can easily lead to some moving contacts 322 failing to make contact with their corresponding stationary contacts 312 or making a loose connection. The connecting plate 326 can deform to a certain extent, and multiple moving springs 321 are connected to the push system 200 respectively. Therefore, although multiple moving springs 321 rotate together in the direction of approaching or moving away from the stationary contact unit 310 under the drive of the push system 200, a certain angular deviation can be generated to ensure that the moving contacts 322 on multiple moving springs 321 can all make contact and conduct with their corresponding stationary contacts 312.

[0109] Optionally, the connecting plate 326 includes a first plate and a second plate. Multiple first plates are fixedly connected to multiple movable springs 321 one-to-one via a connection method such as riveting. The gaps between the second plate and adjacent movable springs 321 are opposite. The second plate connects to adjacent first plates, and the width of the second plate is smaller than the width of the first plate. Because the width of the second plate is smaller than the width of the first plate, the connecting plate 326 is easily subjected to torsional deformation at the position of the second plate, satisfying the requirement of different swing angles of the multiple movable springs 321.

[0110] Optionally, the connection position between the connecting plate 326 and the moving spring 321 is located at the end of the moving spring 321 away from the moving contact 322. Thus, when the connecting plate 326 undergoes a small deformation, a large positional difference can be generated between the moving contacts 322. Based on this, under the premise that the moving contacts 322 on multiple moving springs 321 can all make contact and conduct with the corresponding stationary contacts 312, the deformation of the connecting plate 326 can be reduced, making it easier to achieve positional differences of the moving contacts 322, and reducing damage to the connecting plate 326.

[0111] In some embodiments, the moving spring 321 and the adapter shaft 325 are separately formed and fixedly connected, or they are integrally formed.

[0112] When the moving spring 321 and the adapter shaft 325 can be separately formed, the moving spring 321 is optionally provided with a mounting hole, which passes through the moving spring 321 along the second direction Z, and the adapter shaft 325 passes through the mounting hole.

[0113] Referring to Figure 9, as one configuration of the adapter shaft 325, the adapter shaft 325 includes multiple shaft segments, which are arranged sequentially along the axial direction, and the multiple shaft segments are connected to multiple moving springs 321 in a one-to-one correspondence, and at least some of the shaft segments are rotatably connected to the housing 100.

[0114] As another configuration of the adapter shaft 325, there is one adapter shaft 325, and the adapter shaft 325 is connected to multiple moving springs 321 at the same time.

[0115] Understandably, when the adapter shaft 325 is connected to multiple moving springs 321 simultaneously, and there are angular differences between the multiple moving springs 321 connected to the adapter shaft 325, the position of the adapter shaft 325 must also meet the requirements of the angular differences of the moving springs 321. For example, the adapter shaft 325 itself may deform, or there may be relative rotation between the adapter shaft 325 and the moving springs 321. When the adapter shaft 325 includes multiple shaft segments, and each of the multiple shaft segments is connected to a corresponding moving spring 321, the shaft segments can be misaligned, and this will not be affected by the angular differences between the moving springs 321.

[0116] Referring to Figures 10 and 12, in some embodiments of this disclosure, the movable spring 321 is connected to the adapter shaft 325 via a connecting plate 326.

[0117] In some embodiments, the connecting plate 326 is provided with at least one mounting portion 328, the mounting portion 328 having a through shaft hole 329, and the adapter shaft 325 passing through the through shaft hole 329.

[0118] In some embodiments, the connecting plate 326 is provided with two or more mounting portions 328, and the mounting portions 328 are arranged sequentially along the second direction Z. The axis of the through hole 329 is along the second direction Z, and the adapter shaft 325 is simultaneously engaged with two or more mounting portions 328.

[0119] Optionally, the adapter shaft 325 is provided with a positioning ring. The positioning ring protrudes from the side wall of the adapter shaft 325 and contacts and engages with the end of the mounting part 328 to form an axial limit on the adapter shaft 325, making the installation of the adapter shaft 325 more convenient and accurate, and also improving rotational stability.

[0120] Optionally, the mounting part 328 and the connecting plate 326 are integrally formed.

[0121] For example, as shown in Figure 11, the connecting plate 326 is integrally formed with a first constituent plate on one side of the first direction X (i.e., the side of the adapter shaft 325 in the radial direction), or the connecting plate 326 is integrally formed with a first constituent plate on the side opposite to the first direction X, and the first constituent plate is rolled to form a mounting portion 328.

[0122] For example, as shown in Figure 12, the connecting plate 326 has a second component plate integrally formed on one side of the second direction X (i.e., the side of the adapter shaft 325 axially upward) and / or on the side of the connecting plate 326 in the opposite direction of the second direction X (i.e., the other side of the adapter shaft 325 axially upward). The second component plate is perpendicular to the connecting plate 326 and has a through hole 329 to form a mounting part 328.

[0123] This structure simplifies the forming of the connecting plate 326 and the mounting part 328, reduces production difficulty, and improves the structural strength of the connecting plate 326 and the mounting part 328.

[0124] Referring to Figures 13 and 14, in some embodiments, the adapter shaft 325 is formed by bending one end of the third constituent plate, and the connecting plate 326 is connected to the other end of the third constituent plate, so that the moving spring 321 is connected to the adapter shaft 325 through the connecting plate 326. Further, the third constituent plate and the connecting plate 326 are integrally formed.

[0125] Referring to Figures 15 and 16, in some embodiments of this disclosure, the movable contact unit 320 further includes a fixing frame 600 connected to the housing 100, and the fixing frame 600 has a first limiting hole. The housing 100 is provided with a second limiting hole 140, which is opposite to and coaxial with the first limiting hole. One end of the adapter shaft 325 is rotatably inserted into the first limiting hole, and the other end of the adapter shaft 325 is rotatably inserted into the second limiting hole 140.

[0126] In this embodiment, the adapter shaft 325 is limited by the cooperation between the first limiting hole on the fixing bracket 600 and the adapter shaft 325, and the cooperation between the second limiting hole 140 on the housing 100 and the adapter shaft 325, thus satisfying the installation requirements of the moving spring 321. Compared with the conventional installation method that only limits the adapter shaft 325 through the housing 100, this method has the advantage of being easier to manufacture and assemble, and can form a good limit for the adapter shaft 325 and the moving spring 321.

[0127] Optionally, the mounting bracket 600 is detachably connected to the housing 100. In this embodiment, the adapter shaft 325 is inserted into the first limiting hole on the mounting bracket 600 and the second limiting hole 140 on the housing 100, respectively. Since the mounting bracket 600 is detachably connected to the housing 100, when the mounting bracket 600 is connected to the housing 100, the housing 100 and the mounting bracket 600 can respectively limit the adapter shaft 325 in opposite axial directions, maintaining the stability of the position of the adapter shaft 325. When the mounting bracket 600 is removed from the housing 100, the adapter shaft 325 can be pulled out from the second limiting hole 140 on the housing 100, facilitating the replacement and maintenance of the adapter shaft 325 or the moving spring 321, etc.

[0128] Optionally, the first limiting hole is a blind hole, which can block foreign objects and reduce the risk of foreign objects entering the first limiting hole and causing jamming, affecting the reliability of the life.

[0129] Optionally, when the adapter shaft 325 is bent into shape from one end of the third constituent plate, an opening is provided on one side of the first limiting hole and / or the second limiting hole for the third constituent plate to pass through, and the width of the opening is greater than the thickness of the third constituent plate and less than the diameter of the portion of the adapter shaft 325, so as to allow the third constituent plate to rotate.

[0130] Referring to Figure 16, in some embodiments, the outer casing 100 is provided with a insertion groove 150, the extension direction of which is parallel to the extension direction of the second limiting hole 140. The fixing bracket 600 is provided with a insertion part 610, the extension direction of which is parallel to the extension direction of the first limiting hole. The insertion part 610 is inserted into the insertion groove 150. In this embodiment, the fixing bracket 600 and the outer casing 100 are connected by a detachable insertion method. Furthermore, the insertion direction of the fixing bracket 600 and the outer casing 100 is the same as the insertion direction of the adapter shaft 325. When installing the adapter shaft, inserting the fixing bracket 600 into the outer casing 100 allows the adapter shaft 325 to be inserted into the first limiting hole and the second limiting hole 140. Therefore, it has the advantages of easier assembly and disassembly and lower production difficulty.

[0131] Optionally, the outer casing 100 is provided with multiple insertion slots 150, and the fixing frame 600 is provided with multiple insertion parts 610. The multiple insertion slots 150 and the multiple insertion parts 610 are inserted and engaged in a one-to-one correspondence. In this embodiment, the connection between the fixing frame 600 and the outer casing 100 is achieved through the joint cooperation of multiple insertion parts 610 and multiple insertion slots 150. This can reduce the force on a single insertion part 610, prevent damage to the insertion part 610, and also provide angular limiting for the fixing frame 600, preventing the fixing frame 600 from angularly deviating from a single insertion part 610, thereby helping to ensure the accuracy of the position and angle of the adapter shaft 325.

[0132] In this embodiment, the shapes and sizes of the multiple plug-in portions 610 may be the same or different. In some embodiments, the shape and / or size of some of the plug-in portions 610 are different from those of the other plug-in portions 610. This can prevent mistaken assembly and make the assembly process more convenient and accurate.

[0133] Of course, in some embodiments, the fixing frame 600 may not be provided, and the two opposite side walls of the housing 100 may be provided with limit holes, and the two ends of the adapter shaft 325 may be rotatably installed in the corresponding limit holes.

[0134] In some embodiments, the moving contact unit 320 further includes a flexible connecting line 327 (see FIG. 24), which is arranged in parallel with at least a portion of the moving spring 321.

[0135] For example, one end of the flexible connecting line 327 is connected to the connecting part 324 or the second straight part 3214, and the other end of the flexible connecting line 327 is connected to the moving contact 322 or the first straight part 3211.

[0136] In this embodiment, the flexible connecting line 327 and a portion or the entirety of the moving spring 321 are connected in parallel. By providing the flexible connecting line 327, the requirement for the cross-sectional area of ​​the moving spring 321 can be reduced, allowing for a thinner moving spring 321, making it easier to bend and reducing reaction force. Of course, the flexible connecting line 327 can also be provided when the moving spring 321 is rotatably connected to the outer casing 100 at one end. For example, one end of the flexible connecting line 327 is connected to the moving contact 322, and the other end is connected to the connecting part 324.

[0137] To prevent the flexible connecting line 327 from breaking when the moving spring 321 deforms, the flexible connecting line 327 in this embodiment can adopt a redundant length structure design.

[0138] Referring to Figure 4, in some embodiments of this disclosure, the static touch unit 310 further includes a static magnetic conductor 313, and the dynamic touch unit 320 further includes a dynamic magnetic conductor 323. The dynamic magnetic conductor 323 and the dynamic spring 321 are separately formed and fixedly connected, and are opposite to the static magnetic conductor 313.

[0139] Static magnet 313 is typically a material that can guide and concentrate magnetic field lines. It can be magnetic materials such as iron, nickel, and cobalt or their alloys, or other materials with high magnetic permeability.

[0140] The interaction between the moving magnet 323 and the stationary magnet 313 is crucial for achieving the switching action. When the control current passes through the coil 201 of the drive system 200, a magnetic field is generated. This magnetic field acts on the armature assembly 210, thereby driving the moving spring 321 closer to the stationary spring 311 and causing the moving contact 322 to contact the stationary contact 312. At this time, current flows through the moving spring 321, generating a ring-shaped magnetic field around it. This magnetic field acts on the moving magnet 323 and the stationary magnet 313, causing them to attract each other. This exerts a force on the moving spring 321 that tends to move closer to the stationary spring 311, which is beneficial for promoting the switching action. The moving contact 322 and the stationary contact 312 are brought into contact and closed. After the moving contact 322 and the stationary contact 312 are brought into contact and closed, the working current passes through the moving spring 321 and generates a magnetic field at the position of the moving spring 321. This magnetic field also acts on the moving magnetic conductor 323 and the stationary magnetic conductor 313, causing the moving magnetic conductor 323 and the stationary magnetic conductor 313 to attract each other, thereby increasing the closing holding force of the moving contact 322 and the stationary contact 312. Furthermore, even if the coil 201 of the drive system 200 is de-energized, the stable state of the moving contact 322 and the stationary contact 312 being brought into contact and closed can still be maintained.

[0141] In addition, when the moving contact 322 and the stationary contact 312 first come into contact, they have an initial contact point. When a short circuit fault occurs, the magnetic attraction between the moving magnetic conductor 323 and the stationary magnetic conductor 313 increases, which can cause the moving spring 321 to deform more. At this time, the moving contact 322 can slide relative to the stationary contact 312, changing the contact position between the moving contact 322 and the stationary contact 312, thus preventing the moving contact 322 and the stationary contact 312 from sticking together. When a short circuit occurs, the repulsive force between the stationary contact 312 and the moving contact 322 increases, which can easily lead to the stationary contact 312 and the moving contact 322 popping apart and exploding. However, in this embodiment, when a short circuit occurs, the current in the moving spring 321 increases, and the magnetic field generated also changes. The magnetic attraction between the moving magnetic conductor 323 and the stationary magnetic conductor 313 increases, which can stably maintain the distance between the moving spring 321 and the stationary spring 311, so that the moving contact 322 and the stationary contact 312 always maintain a closed contact state. Furthermore, it causes the moving spring 321 to increase its deformation, allowing the moving contact 322 to slide relative to the stationary contact 312, changing the contact position of the moving contact 322 and the stationary contact 312, which can prevent the moving contact 322 and the stationary contact 312 from sticking together.

[0142] In addition, in this embodiment, the moving magnetic conductor 323 can contact the moving spring 321, so that when the moving contact 322 and the stationary contact 312 are closed, current can be conducted in the moving magnetic conductor 323 to increase the induced magnetic field and improve the magnetic attraction between the moving magnetic conductor 323 and the stationary magnetic conductor 313. Alternatively, an insulating element can be provided between the moving magnetic conductor 323 and the moving spring 321 to prevent the current in the moving spring 321 from flowing through the moving magnetic conductor 323.

[0143] In addition, this embodiment uses a moving magnetic conductor 323 and a stationary magnetic conductor 313 to achieve the short-circuit protection function, which is different from the existing technology that forms the short-circuit protection structure by bending the spring body. The manufacturing process is simpler and the material cost is lower.

[0144] Referring to Figure 17, in some embodiments, multiple moving springs 321 are arranged side by side, and multiple moving magnetic conductors 323 are arranged, with each moving magnetic conductor 323 corresponding to a moving spring 321. A stationary magnetic conductor 313 includes multiple first magnetic conductors 3131, which are arranged at intervals along the arrangement direction of the multiple moving springs 321, and each first magnetic conductor 3131 corresponds to a moving magnetic conductor 323.

[0145] In this embodiment, each moving magnetic body 323 is respectively arranged with a first magnetic body 3131. An independent short-circuit ring can be formed between the moving magnetic body 323 and its corresponding first magnetic body 3131. The interaction between the moving magnetic body 323 and its corresponding first magnetic body 3131 can apply a force to the moving spring 321 corresponding to the moving magnetic body 323, moving it closer to the moving spring 321. Since multiple moving springs 321 are each provided with a moving magnetic body 323, each moving spring 321 can independently withstand the force of its corresponding moving magnetic body 323, maintaining stable contact between each moving contact 322 and its corresponding stationary contact 312 when the relay 10 is closed. Especially after some moving contacts 322 or stationary contacts 312 are ablated, it can be ensured that each moving contact 322 can still contact its corresponding stationary contact 312.

[0146] Referring to the figures, in some embodiments, the stationary magnetic conductor 313 includes a second magnetic conductor 3132, which has a break hole 3133. The break hole 3133 is opposite to the gap between the adjacent moving spring 321. In this embodiment, the different parts of the second magnetic conductor 3132 separated by the break hole 3133 are not completely disconnected; that is, the different parts of the second magnetic conductor 3132 separated by the break hole 3133 are interconnected. The multiple parts separated by the break hole 3133 can perform the same function as the multiple first magnetic conductors 3131, which will not be elaborated here.

[0147] In some embodiments, the static magnetic conductor 313 includes a first magnetic conductor 3131 and a second magnetic conductor 3132. The second magnetic conductor 3132 is located on the side of the first magnetic conductor 3131 away from the moving magnetic conductor 323, and is fixedly connected to multiple first magnetic conductors 3131.

[0148] In some embodiments, the first magnetic conductor 3131 and the second magnetic conductor 3132 are both rectangular or approximately rectangular plate structures, and the second magnetic conductor 3132 and the first magnetic conductor 3131 are fixedly connected by means such as welding or riveting.

[0149] The second magnetic conductor 3132 can support and fix the first magnetic conductor 3131, maintaining the relative positions of the multiple first magnetic conductors 3131. The second magnetic conductor 3132 is divided into regions corresponding to the multiple first magnetic conductors 3131 by the interrupted holes 3133. The different regions divided by the second magnetic conductor 3132 and their corresponding first magnetic conductors 3131 work together to improve the magnetic attraction between the static magnetic conductor 313 and the moving magnetic conductor 323.

[0150] In addition, when the thickness of the static magnetic conductor 313 is large, it is not convenient to break it. However, in this embodiment, the first magnetic conductor 3131 and the second magnetic conductor 3132 can be processed separately, and then the first magnetic conductor 3131 and the second magnetic conductor 3132 can be assembled together. By adopting a structure in which the first magnetic conductor 3131 and the second magnetic conductor 3132 are combined, the production difficulty can be reduced.

[0151] Of course, as shown in Figure 19, the static magnetic conductor 313 is not limited to the above structure. In some embodiments, the static magnetic conductor 313 can be a single piece, and when multiple moving magnetic conductors 323 are provided, it interacts with multiple moving magnetic conductors 323 at the same time. The static magnetic conductor 313 forms multiple magnetic conductor structures that correspond one-to-one with multiple moving magnetic conductors 323 by means of partial interruption.

[0152] In some embodiments, the stationary magnet 313 is fixedly connected to the housing 100, and the support and fixing effect of the housing 100 maintains the stability of the position of the stationary magnet 313. Fixing the stationary magnet 313 to the housing 100 also helps to reduce the magnetic gap between the stationary magnet 313 and the moving magnet 323 when the moving contact 322 and the stationary contact 312 are closed, thus achieving a better holding effect.

[0153] Referring to Figure 18, in some embodiments, the outer casing 100 is provided with a first protrusion 121 and a second protrusion 122 arranged opposite to each other. Slots 123 are respectively provided on the sides of the first protrusion 121 and the second protrusion 122 that are close to each other. One end of the static magnet 313 is inserted into the slot 123 of the first protrusion 121, and the other end is inserted into the slot 123 of the second protrusion 122. This embodiment achieves the connection between the static magnet 313 and the outer casing 100 through insertion, which has the advantages of structural stability and ease of assembly. Of course, in some embodiments, the outer casing 100 may also be provided with a slot 123 with its opening facing a third direction Y, and the corresponding side of the static magnet 313 is inserted into the slot 123, thereby making the installation of the static magnet 313 more stable.

[0154] Optionally, the static magnet 313 is provided with a plug-in structure at both ends, which is engaged with the slot 123.

[0155] For example, as shown in Figure 19, the static magnetic conductor 313 has a first extension portion 3134 at both ends, and a stepped insertion structure is formed at the position of the first extension portion 3134. The first extension portion 3134 is inserted into the slot 123.

[0156] Alternatively, as shown in Figure 17, the length of the second magnetic conductor 3132 along the first direction X is greater than the distance between the opposite sides of the second magnetic conductors 3132 located at both ends among the plurality of second magnetic conductors 3132, so that the two ends of the second magnetic conductor 3132 protrude to form a stepped insertion structure. One end of the second magnetic conductor 3132 is inserted into the slot 123 of the first protrusion 121, and the other end of the second magnetic conductor 3132 is inserted into the slot 123 of the second protrusion 122. The structure of connecting the housing 100 through the second magnetic conductor 3132 has the advantages of easy installation and more stable structure.

[0157] Alternatively, as shown in Figure 20, the static magnet 313 has a second extension portion 3135 at both ends. The second extension portion 3135 is a curved plate-like structure formed by extending from both ends of the static magnet 313. The second extension portion 3135 serves as the above-mentioned insertion structure and is inserted into the slot 123.

[0158] Referring to Figures 21 and 22, in some embodiments, the stationary magnet 313 is fixedly connected to the stationary spring 311 or the housing 100 via a fastener 3136. In some embodiments, the stationary magnet 313 is fixedly connected to the housing 100 via the fastener 3136. The fastener 3136 includes rivets or bolts, etc., and is engaged with one of the stationary spring 311 and the housing 100, and also with the stationary magnet 313.

[0159] Optionally, a hidden groove 3137 is provided on the side of the stationary magnet 313 near the moving magnet 323, and one end of the fastener 3136 near the moving magnet 323 is located in the hidden groove. For example, when the fastener 3136 is a bolt, the end of the bolt near the moving magnet 323 and the nut connected to the bolt are both located in the hidden groove; or, when the fastener 3136 is a rivet, one end of the rivet is located in the hidden groove. By providing the hidden groove, the fastener 3136 can be prevented from limiting the movement of the moving magnet 323 or other components such as the moving spring 321.

[0160] In some embodiments, at least one side of the moving magnetic conductor 323 is provided with a folded edge, which protrudes from the moving magnetic conductor 323 toward the stationary magnetic conductor 313. In some embodiments, folded edges are provided on both sides of the moving magnetic conductor 323, and the folded edges on both sides of the moving magnetic conductor 323 are respectively positioned on both sides of the moving spring 321 connected to the moving magnetic conductor 323. By providing the folded edge structure, the magnetic gap can be further reduced and the magnetic attraction force can be increased. Furthermore, the connection between the moving magnetic conductor 323 and the moving spring 321 can be made more stable.

[0161] In some embodiments, when the moving contact 322 and the stationary contact 312 are in contact, the side of the stationary magnet 313 near the moving magnet 323 and the side of the moving magnet 323 near the stationary magnet 313 are parallel to each other and both form an angle with the first direction X. This ensures that the gap between the side of the stationary magnet 313 near the moving magnet 323 and the side of the moving magnet 323 near the stationary magnet 313 is uniform, thereby ensuring uniform magnetic attraction between the moving magnet 323 and the stationary magnet 313 at different positions. It also facilitates control of the minimum magnetic gap between the moving magnet 323 and the stationary magnet 313.

[0162] In some embodiments, the relay 10 further includes a connection structure 230, which connects to the movable contact unit 320. The push system 200 also includes a push card 220, which connects to the armature assembly 210 and the connection structure 230. When the armature assembly 210 rotates, it can drive the push card 220 to move, thereby driving the movable contact unit 320 to move through the connection structure 230. In this embodiment, the push card 220 can be a rod-shaped or approximately rod-shaped structure as shown in the figure, or it can adopt other structural forms, which can be flexibly determined according to the actual use. In addition, the connection method between the push card 220 and the armature assembly 210 is not limited. For example, one end of the push card 220 is ball-jointed with the swing arm of the armature assembly 210, or it is fixedly connected to the swing arm of the armature assembly 210.

[0163] The connection between the push card 220 and the moving contact unit 320 is achieved through the connection structure 230, which can meet the needs of more installation positions and angles, thus making the spatial layout of the relay 10 more flexible.

[0164] Furthermore, by connecting the push card 220 and the moving contact unit 320 through the connecting structure 230, the rotation angle can be made more flexible, which is beneficial to realize the large-scale closing and breaking action of the moving spring when the gap between the moving contact and the stationary contact is large, reducing the risk of jamming and the reaction force during the opening and closing process.

[0165] Furthermore, the connection position between the connecting structure 230 and the push card 220 is located on the side of the moving contact unit 320 away from the stationary contact unit 310. It is understood that at the instant the moving contact 322 of the moving contact unit 320 separates from or closes with the stationary contact 312 of the stationary contact unit 310, an electric arc may be generated due to changes in current. This arc will inevitably cause ablation to nearby components. Since the push card 220 needs to connect (directly or indirectly) to the moving spring 321 of the moving contact unit 320, and its end is close to the moving contact 322 and the stationary contact 312, it is easily damaged by the electric arc. However, in this disclosure, the connection position between the connecting structure 230 and the push card 220 is located on the side of the moving contact unit 320 away from the stationary contact unit 310. Therefore, the moving spring 321 can block the movement between the moving contact 322 and the stationary contact 312 and the push card 220, effectively preventing the push card 220 from being ablated and improving the overall reliability and service life of the relay 10.

[0166] Referring to Figures 23 and 24, as an optional form of the connection structure 230, the connection structure 230 includes a hook assembly and a compression spring 233. The hook assembly connects the push card and the moving touch unit and is configured to allow the push card 220 and the moving touch unit 320 to rotate and move relative to each other within a preset range. The compression spring 233 is located between the push card and the moving touch unit.

[0167] In this embodiment, the connection structure 230 can simultaneously meet the driving requirements for closing and opening. When the push card 220 presses the moving contact unit 320, bringing the moving contact unit 320 closer to the stationary contact unit 310 and making the moving contact 322 of the moving contact unit 320 contact with the stationary contact 312 of the stationary contact unit 310, the compression spring 233 applies elastic pressure to the moving contact unit 320, which can prevent excessive pressure between the moving contact 322 and the stationary contact 312 from causing damage to the moving contact 322 and the stationary contact 312; when the push card 220 moves away from the stationary contact unit 310 and pulls the moving contact unit 320, the push card 220 transmits the pulling force through the hook assembly instead of through the compression spring 233, thus preventing damage to the compression spring 233.

[0168] In some embodiments, the mounting assembly includes a first connector 231 and a second connector 232, wherein the first connector 231 is fixedly connected to the touch unit 320, the second connector 232 is fixedly connected to the push card 220, the second connector 232 and the first connector 231 are movably mounted together, and the second connector 232 is adapted to rotate or move relative to the first connector 231 within a preset range.

[0169] The first connecting member 231 is adapted to rotate relative to the second connecting member 232 within a preset range. This satisfies the angle change requirements between the push card 220 and the moving contact unit 320 during the opening and closing process, preventing the formation of torque between the push card 220 and the moving contact unit 320, which would affect the opening and closing effect, and preventing damage to the connection position between the push card 220 and the moving contact unit 320. Furthermore, the first connecting member 231 is adapted to move relative to the second connecting member 232 within a preset range, allowing for overtravel pressing using the compression spring 233, resulting in a more stable closing effect.

[0170] Optionally, one of the first connector 231 and the second connector 232 has a mounting hole 2313, and the other of the first connector 231 and the second connector 232 is movably inserted into the mounting hole 2313. That is, the first connector 231 has a mounting hole 2313, and the second connector 232 is movably inserted into the mounting hole 2313; or, the second connector 232 has a mounting hole 2313, and the first connector 231 is movably inserted into the mounting hole 2313. For ease of description, an example is given with the first connector 231 having a mounting hole 2313.

[0171] In some embodiments, the first connector 231 includes an ear portion 2312, which is fixedly connected to the movable contact unit 320. The ear portion 2312 has a hook hole 2313. The second connector 232 includes a connecting shaft, which is fixedly mounted on the push card 220 and movably passes through the hook hole 2313. The direction of movement of the connecting shaft within the hook hole 2313 includes the arrangement direction of the movable contact unit 320 and the stationary contact unit 310. The connection shaft being fixedly mounted on the push card 220 means that the connecting shaft is located in the push card 220 and its relative position to the push card 220 is fixed. The direction of movement of the connecting shaft within the mounting hole 2313 includes the arrangement direction of the moving contact unit 320 and the stationary contact unit 310. This means that the connecting shaft can generate displacement within the mounting hole 2313, and the displacement is along the arrangement direction of the moving contact unit 320 and the stationary contact unit 310 or includes a component along the arrangement direction of the moving contact unit 320 and the stationary contact unit 310. As a result, the relative position between the push card 220 and the ear 2312 can be changed, realizing the functions of pressing by the compression spring 233 and lifting by the cooperation of the first connector 231 and the second connector 232.

[0172] Furthermore, since the first connector 231 and the second connector 232 are connected to the connecting shaft through the hook hole 2313, they form an arc-shaped surface contact, allowing for a larger relative rotation range between the first connector 231 and the second connector 232, resulting in a smoother adjustment process.

[0173] In some embodiments, multiple first connectors 231 are provided, each fixedly connected to the moving contact unit 320, and each first connector 231 has a mounting hole 2313. Second connectors 232 are movably mounted and engaged with each of the multiple first connectors 231. By providing multiple first connectors 231 and connecting each of the multiple first connectors 231 to the second connectors 232, the force on a single first connector 231 can be reduced, which helps to reduce the risk of damage and improve drive stability.

[0174] Furthermore, when multiple moving springs 321 are provided, and multiple moving springs 321 are arranged side by side, each moving spring 321 is connected to at least one ear 2312. Taking two moving springs 321 arranged side by side as an example, two ear 2312 can be provided, and the two moving springs 321 are connected to the two first connecting members 231 in a one-to-one correspondence. Thus, the push card 220 can simultaneously meet the driving needs of multiple moving springs 321.

[0175] Referring to Figures 27 and 28, in some embodiments, the first connector 231 includes a fixing part 2311 and an ear part 2312. The fixing part 2311 is fixedly connected to the moving contact unit 320, the ear part 2312 is vertically fixed to the fixing part 2311, and the hanging hole 2313 is provided on the ear part 2312.

[0176] In some embodiments, the fixing part 2311 is located on the side of the moving spring 321 away from the moving contact 322, and the fixing part 2311 is fixedly connected to the moving spring 321 by a rivet.

[0177] In some embodiments, the first connector 231 includes two fixing portions 2311 and two ear portions 2312. The two fixing portions 2311 and the two ear portions 2312 are symmetrical about the same plane perpendicular to the fixing portions 2311, and the two fixing portions 2311 and the two ear portions 2312 are fixedly connected in a one-to-one correspondence.

[0178] Optionally, the end of the compression spring 233 near the moving contact unit 320 is fixedly connected to the fixing part 2311. The fixing part 2311 can maintain the stable position of the end of the compression spring 233 near the moving contact unit 320 and the moving contact unit 320, and prevent the compression spring 233 from being lost.

[0179] In some embodiments, the first connector 231 includes two fixing parts 2311, and the compression spring 233 is located between the two fixing parts 2311 and is fixedly connected to both fixing parts 2311.

[0180] Optionally, there is a movable gap between adjacent fixed parts 2311, and the movable gap is opposite to the gap between adjacent moving springs 321. By setting the movable gap, different moving springs 321 can produce swing angle deviations, thereby ensuring that each moving contact 322 can contact its corresponding stationary contact 312 after some moving contacts 322 or stationary contacts 312 are burned. The principle of this is described above and will not be repeated here.

[0181] Optionally, the fixing part 2311, the ear part 2312 and the compression spring 233 are integrally formed, which can reduce the difficulty of production and installation, and help ensure the stability of the relative positions of the fixing part 2311, the ear part 2312 and the compression spring 233.

[0182] Referring to Figure 29, in some embodiments, the first connector 231 includes an ear portion 2312, which is integrally bent from a movable spring 321, and a hook hole 2313 is provided on the ear portion 2312. The integrally formed structure of the ear portion 2312 and the movable spring 321 is beneficial to improving the stability of the relative position between the ear portion 2312 and the movable spring 321, and reducing the complexity of the connection structure 230.

[0183] Referring to Figures 25 and 26, in some embodiments, the size of the mounting hole 2313 is larger than the diameter of the connecting shaft in the direction perpendicular to the wall surface of the movable spring 321 near the connecting shaft. This allows the connecting shaft to displace within the mounting hole 2313 in a direction perpendicular to the wall surface of the movable spring 321 near the connecting shaft. Consequently, when the pusher 220 presses against the movable spring 321, pressure is preferentially applied via the compression spring 233, reducing the risk of damage to the moving contact 322 and the stationary contact 312 due to compression. Furthermore, it prevents the force between the moving contact 322 and the stationary contact 312 from directly impacting the pusher 220.

[0184] Referring to Figures 23 and 27, further, in the direction parallel to the wall surface of the moving spring 321 near the connecting shaft, the size of the hook hole 2313 is larger than the diameter of the connecting shaft. It is understood that when the armature assembly 210 rotates, it will cause the end of the push card 220 connected to the armature assembly 210 to displace along the first direction X. Furthermore, when the moving contact unit 320 approaches or moves away from the stationary contact unit 310, it will cause the first connecting member 231 to displace along the first direction X. By setting the hook hole 2313 to the above-described structure, the influence of the displacement of the push card 220 or the first connecting member 231 along the first direction X on the connection position of the first connecting member 231 and the connecting shaft can be eliminated, preventing damage to the first connecting member 231 and the connecting shaft.

[0185] In the above embodiments, the mounting hole 2313 can be a through hole or a blind hole structure. Furthermore, the form of the mounting hole 2313 can be the same or different in different ears. For example, some of the mounting holes are through holes, and some of the mounting holes are blind holes, or all of the mounting holes are through holes, or all of the mounting holes are blind holes.

[0186] In this embodiment, the first connector can be connected to the moving spring 321 in the moving touch unit 320, or to the moving magnetic conductor 323 in the moving touch unit 320. Furthermore, the connection position of the first connector 231 to the moving touch unit 320 can be the movable end, the middle, or other positions of the moving touch unit 320.

[0187] Referring to Figure 30, optionally, the push card 220 is provided with a through hole 221, and the connecting shaft is fixed to the push card 220 through the through hole 221.

[0188] Alternatively, the connecting shaft is integrally formed into the push card 220.

[0189] Referring to Figures 7 and 8, as an optional form of the connection structure 230, the connection structure 230 includes a pull rod 234. One end of the pull rod 234 is connected to the push card 220, and the other end of the pull rod 234 is fixedly connected to the moving contact unit 320. The pull rod 234 serves as a transmission component between the push card 220 and the moving contact unit 320, satisfying the push-pull requirement of the push card 220 on the moving contact unit 320. Furthermore, connecting the push card 220 and the moving contact unit 320 via the pull rod 234 also helps to increase the transmission ratio and meet the requirement of a large contact gap.

[0190] In some embodiments, the pull rod 234 includes a hook 2341 and a pressure plate 2342. The first end of the hook 2341 is fixedly connected to the movable contact unit 320, and the second end is rotatably engaged with the push card 220. One end of the pressure plate 2342 is fixedly connected to the first end of the hook 2341, and the other end of the pressure plate 2342 is located on the side of the push card 220 near the movable contact unit 320.

[0191] In this embodiment, the pull rod 234 can be connected to the moving spring 321 in the moving contact unit 320, or it can be connected to the moving magnetic conductor 323 in the moving contact unit 320. Furthermore, the connection position between the pull rod 234 and the moving contact unit 320 can be the movable end, the middle, or other positions of the moving contact unit 320.

[0192] In some embodiments, the moving magnet 323 is located in the middle of the moving spring 321, and the pull rod 234 is connected to the moving magnet 323. When the push card 220 moves toward the stationary contact unit 310, the push card 220 presses the pressure plate 2342, and the pressure plate 2342 further drives the moving magnet 323 to move toward the stationary contact unit 310. When the push card 220 moves away from the stationary contact unit 310, the push card 220 pulls the hook 2341 to move away from the stationary contact unit 310, thereby causing the moving magnet 323 to move away from the stationary contact unit 310. When the moving magnet 323 moves toward or away from the stationary contact unit 310, it can drive the moving spring 321 to move toward or away from the stationary contact unit 310, and further cause the moving contact 322 to close or open with the stationary contact 312.

[0193] In this embodiment, the position where the pull rod 234 is connected to the moving contact unit 320 is the moving magnetic body 323. During the opening and closing process, the moving contact 322 can be displaced by a small displacement of the pull rod 234, which is beneficial to meet the large gap requirement.

[0194] In this embodiment, the pressure plate 2342 of the pull rod 234, in addition to pressing the moving magnetic body 323, can also cooperate with the hook 2341 to limit the movement and prevent the push card 220 from disengaging from the pull rod 234.

[0195] Optionally, the pressure plate 2342 can be a rigid plate or an elastic plate. In some embodiments, the pressure plate 2342 is an elastic plate, so that when the moving contact unit 320 is pressed, the pressure plate 2342 is compressed to provide overtravel contact pressure, ensuring stability and preventing damage to components such as the moving spring 321, the moving contact 322 and the stationary contact 312.

[0196] Optionally, the hook 2341 is riveted to the moving magnetic body 323. The riveting method not only achieves a stable connection between the hook 2341 and the moving magnetic body 323, but also allows the pressure plate 2342 to apply pressure to the moving magnetic body 323 more effectively.

[0197] Referring to Figures 3 and 4, in some embodiments, when a short circuit fault occurs, the magnetic attraction between the moving magnet 323 and the stationary magnet 313 increases. This causes a larger displacement of the moving spring 321 in the moving contact unit 320 towards the stationary contact unit 310, resulting in bending of the moving spring 321 towards the stationary contact unit 310. If the pushing system 200 is connected to the moving spring 321, the compression spring 233 or pressure plate 2342 in the pushing system 200 will be torsional due to the deformation of the moving spring 321. However, the end of the compression spring 233 or pressure plate 2342 away from the moving spring 321 is obstructed by the pushing clip 220 and cannot rotate away from the stationary contact unit 310. Therefore, the deformation of the compression spring 233 or pressure plate 2342 is relatively large. When the compression spring 233 or the pressure plate 2342 is connected to the moving magnetic body 323, the deformation distance of the compression spring 233 or the pressure plate 2342 in the Y direction is relatively small because the moving magnetic body 323 is not easily deformed relative to the moving spring 321.

[0198] Referring to Figure 30, in some embodiments, the push card 220 is provided with a shaft hole 222, which is located near the end of the push card 220 and extends through it. A hanging shaft 223 is formed on the side of the push card 220 opposite to the armature assembly 210. The second end of the hook 2341 passes through the shaft hole 222 and wraps around the outside of the hanging shaft 223, thus achieving the engagement of the push card 220 and the hanging shaft 223. The end of the pressure plate 2342 opposite to the moving magnetic conductor 323 is located on the side of the hanging shaft 223 near the moving contact unit 320, preventing the hook 2341 from detaching from the hanging shaft 223. Furthermore, when the push card 220 moves towards the stationary contact unit 310, the hanging shaft 223 presses against the pressure plate 2342, applying pressure close to the stationary magnetic conductor 313 to the moving magnetic conductor 323.

[0199] Optionally, the second end of the hook 2341 is clearance-fitted with the hanging shaft 223, so that the hook 2341 and the hanging shaft 223 can rotate relative to each other, which meets the requirements of the angle change of the push card 220 and the hook 2341 during the opening and closing action.

[0200] Optionally, the pull rod 234 is made of metal, which has the advantages of good rigidity and is not easily deformed, and can transmit force more efficiently.

[0201] Referring to Figures 7 and 8, in some embodiments, there are multiple moving magnetic bodies 323 and multiple hooks 2341. The multiple hooks 2341 are distributed among the multiple moving magnetic bodies 323, and the pressure plate 2342 is fixedly connected to any one hook 2341 or any two adjacent hooks 2341. In some embodiments, there are two moving magnetic bodies 323, and two hooks 2341 are correspondingly provided for each moving magnetic body 323. The pressure plate 2342 is fixedly connected to both hooks 2341 simultaneously. Therefore, during the disconnection process, the two hooks 2341 act on the two moving magnetic bodies 323 respectively, ensuring that the two moving magnetic bodies 323 simultaneously move away from the stationary magnetic body 313. During the closing process, the pressure plate 2342 can simultaneously press down on the two moving magnetic bodies 323, causing the two moving magnetic bodies 323 to move simultaneously towards the stationary magnetic body 313.

[0202] Optionally, the pressure plate 2342 includes a first pressing part 2343 and a second pressing part 2344. One end of the first pressing part 2343 is fixedly connected to one of the hooks 2341, and the other end is fixedly connected to the second pressing part 2344. One end of the second pressing part 2344 is fixedly connected to an adjacent hook 2341. A gap is formed between the first pressing part 2343 and the second pressing part 2344. This type of pressure plate 2342 can simultaneously apply pressure to two adjacent moving magnetic bodies 323 and allows the two connected moving magnetic bodies 323 to have a positional difference in the direction toward the stationary magnetic body 313. Therefore, even after some moving contacts 322 or stationary contacts 312 are ablated, it can ensure that each moving contact 322 can contact its corresponding stationary contact 312.

[0203] Optionally, both the first pressing part 2343 and the second pressing part 2344 include a first inclined section and a second inclined section, wherein one end of the first inclined section is connected to the hook 2341 and the other end is connected to the second inclined section, and the angle between the first inclined section and the moving magnetic body 323 is greater than the angle between the second inclined section and the moving magnetic body 323. This allows the first pressing part 2343 and the second pressing part 2344 to better transmit power to the moving magnetic body 323.

[0204] Optionally, the second inclined segment is parallel to the moving magnetic conductor 323, that is, the angle between the second inclined segment and the moving magnetic conductor 323 is 0°.

[0205] It is worth noting that the two connection structures 230 described in the above embodiments and the connection structure 230 shown in the accompanying drawings are only two optional examples, and other structural forms of connection structures 230 should also be within the protection scope of the embodiments disclosed herein. Furthermore, the connection position between the connection structure 230 and the moving contact unit 320 is not limited by the specific structure of the connection structure 230. For example, the connection positions of the first connector 231 and the pull rod 234 with the moving contact unit 320 can be the end, middle, or near the middle position of the moving spring 321, or the moving magnetic conductor 323, etc.

[0206] In some embodiments, the connection point between the pushing system 200 and the moving touch unit 320 is located at the movable end of the moving touch unit 320 (refer to Figures 2 and 3). The movable end of the moving touch unit 320 refers to the end of the moving touch unit 320 that is adapted to move closer to or further away from the stationary touch unit 310 under the drive of the pushing system 200.

[0207] In the above embodiment, the pushing system 200 is connected to the movable end of the moving touch unit 320. Therefore, the distance between the pushing system's force application position on the moving touch unit 320 and the fixed end of the moving touch unit 320 (the end that is fixed in a relative position to the stationary touch unit 310) is greater, that is, the force arm is larger, making it easier to drive the moving touch unit 320 to swing.

[0208] In other embodiments, the connection point between the actuating system 200 and the movable contact unit 320 is located at or near the center of the movable contact unit 320 (refer to Figures 4 and 5). For example, the connection point between the actuating system and the movable contact unit 320 is located at the center of the movable spring 321, or the movable magnetic conductor 323 is located at the center of the movable spring 321, and the actuating system 200 is connected to the movable magnetic conductor 323.

[0209] Compared to the scheme of connecting the moving end of the moving contact unit 320 to the driving system 200, this embodiment has at least the following advantages: the distance from the connection position to the fixed end of the moving contact unit 320 is less than the distance from the moving contact 322 to the fixed end of the moving contact unit 320. Therefore, the displacement of the connection position during the opening and closing process is less than the displacement of the moving contact 322. In other words, the moving contact 322 can generate a large displacement by a small displacement of the connection position, which is beneficial to meeting the large gap requirement.

[0210] In some embodiments, the moving magnet 323 is located in the middle or near the middle of the moving spring 321, and the pushing system 200 is connected to the moving magnet 323. For example, the compression spring 233 or the pressure plate 2342 is installed together with the moving magnet 323 in the middle of the moving spring 321 by rivets. This helps to reduce the space occupied and improve installation efficiency.

[0211] Referring to Figures 2 and 31, in some embodiments, the relay 10 further includes an arc-extinguishing gate 500, which is disposed adjacent to the stationary contact 312 and the moving contact 322.

[0212] Optionally, the arc-extinguishing grid 500 is fixedly connected to the housing 100, and the arc-extinguishing grid 500 is located inside the mounting cavity.

[0213] The aforementioned proximity to the stationary contact 312 and the moving contact 322 means that the arc extinguishing grid 500 is adjacent to the stationary contact 312 and the moving contact 322, and the distance between it and the stationary contact 312 and the moving contact 322 is within a preset range, so that the arc extinguishing grid 500 can capture and extinguish the electric arc of the stationary contact 312 and the moving contact 322.

[0214] At the moment of contact separation or closure, an electric arc may be generated due to changes in current. This arc not only causes severe erosion of the contacts, reducing the lifespan of the relay 10, but may also lead to safety hazards such as short circuits. To effectively address this problem, the relay 10 in this embodiment is specially equipped with an arc-extinguishing grid 500. The arc-extinguishing grid 500 can extinguish the arc. Composed of metal sheets or grids, it can divide the arc and accelerate its cooling and extinguishing process. The arc-extinguishing grid 500 is fixedly connected to the housing 100 by means such as welding, screwing, snap-fitting, or bonding, ensuring the stability and reliability of the arc-extinguishing grid 500 during the operation of the relay 10 and avoiding loosening or damage caused by vibration or impact. The arc-extinguishing grid 500 is located inside the mounting cavity and is close to the stationary contact 312 and the moving contact 322, allowing it to function immediately upon the generation of the arc, effectively guiding the arc between the grids and quickly extinguishing it through mechanisms such as division and cooling. It can significantly improve the arc extinguishing performance of relay 10, extend the service life of contacts and other components such as push card 220, and reduce safety hazards caused by electric arc.

[0215] Optionally, the arc-extinguishing grid 500 is located on one side of the first direction X at the contact position between the stationary contact 312 and the moving contact 322. It is understood that, since one end of the moving contact unit 320 in this embodiment is fixed relative to the stationary contact unit 310, and the other end is adapted to move closer to or further away from the stationary contact unit 310 under the drive of the pushing system 200, and the moving contact 322 and the stationary contact 312 engage in a snapping motion, there is inevitably a problem of contact overlap at the flared end. The arc is prone to splashing towards the opening direction of the flared end, and when a large contact gap is used, the flared end is larger, making the arc splashing range more uncontrollable and easily burning components such as the push card 220. In this embodiment, placing the arc-extinguishing grid 500 on one side of the first direction X at the contact position between the stationary contact 312 and the moving contact 322 (i.e., on one side in the flared end opening direction) can significantly improve the arc-extinguishing capability of the arc-extinguishing grid 500 and solve the problem of arc splashing.

[0216] In some embodiments, the arc-extinguishing grid 500 includes a mounting plate 510 and a plurality of grid plates 520.

[0217] The mounting plate 510 is fixed in position, for example, it is fixedly set on one side of the first direction X at the contact position of the stationary contact 312 and the moving contact 322. For example, the mounting plate 510 is perpendicular to the first direction X. The mounting plate 510 is fixedly connected to the housing 100 by means of welding, snap-fitting or bonding.

[0218] Multiple grid plates 520 are located on the side of the mounting plate 510 near the stationary contact 312 and the moving contact 322, and are fixedly connected to the mounting plate 510.

[0219] Optionally, the mounting plate 510 is made of insulating material such as plastic, and the grid plate 520 is made of metal.

[0220] Optionally, the mounting plate 510 is perpendicular to the third direction Y, and the grid plate 520 is perpendicular to the second direction Z and is fixed perpendicularly to the mounting plate 510.

[0221] In this embodiment, the mounting plate 510 can install and fix multiple grid plates 520, maintain the stability of the relative positions of the multiple grid plates 520, and enable the multiple grid plates 520 to perform the functions of arc initiation and arc extinguishing.

[0222] In some embodiments, the arrangement direction of the plurality of grid pieces 520 is parallel to the arrangement direction of the moving contact unit 320 and the stationary contact unit 310. That is, the arrangement direction of the plurality of grid pieces 520 is along the second direction Z.

[0223] The arrangement of multiple grid plates 520 along the second direction Z can better match the striking direction of the moving contact unit 320 and the stationary contact unit 310, thereby achieving good arc initiation and arc extinguishing effects during the opening and closing of the moving contact 322 and the stationary contact 312.

[0224] In some embodiments, at least a portion of the grid plates 520 are provided with an arc-inducing structure 530. For example, one or more of the grid plates 520 near the contact position between the moving contact 322 and the stationary contact 312 are provided with an arc-inducing structure 530. The arc-inducing structure 530 is arranged at an angle to the grid plate 520, one end of the arc-inducing structure 530 is fixedly connected to the grid plate 520, and the other end extends toward the side near the contact position between the stationary contact 312 and the moving contact 322.

[0225] In some embodiments, the arc-inducing structure 530 is located on one side of the grid plate 520 near the contact position of the stationary contact 312 and the moving contact 322. The arc-inducing structure 530 is perpendicular to the grid plate 520 and one end is fixedly connected to the grid plate 520.

[0226] Optionally, the arc-inducing structure 530 and the grid 520 are integrally formed.

[0227] The arc-initiating structure 530 makes it easier to capture the electric arc generated between the moving contact 322 and the stationary contact 312, thereby achieving a better arc-extinguishing effect.

[0228] Optionally, the moving contact unit 320 includes a plurality of moving contacts 322, and the stationary contact unit 310 includes a plurality of stationary contacts 312. The plurality of moving contacts 322 and the plurality of stationary contacts 312 are arranged at intervals along the second direction Z, and there is a one-to-one correspondence between the plurality of moving contacts 322 and the plurality of stationary contacts 312. At least a portion of the grid plate 520 is provided with a plurality of arc-inducing structures 530. The plurality of arc-inducing structures 530 on the same grid plate 520 are arranged at intervals along the second direction Z, and there is a one-to-one correspondence between them and the plurality of contact positions formed by the plurality of moving contacts 322 and the plurality of stationary contacts 312.

[0229] For example, there are two moving contacts 322 and two stationary contacts 312, with one moving contact 322 corresponding to one stationary contact 312, thus forming the contact positions of two moving contact units 320 and stationary contact units 310. Two arc-inducing structures 530 are provided on the grid plate 520 with the arc-inducing structure 530, arranged along the second direction Z, with each arc-inducing structure 530 corresponding to one of the two contact positions.

[0230] In this embodiment, by having multiple arc-initiating structures 530 corresponding to multiple contact positions, it can be ensured that the electric arcs generated at multiple contact positions can be guided to the grid plate 520.

[0231] In some embodiments, the mounting plate 510 is provided with a perforated hole 511, which penetrates the mounting plate 510 along the first direction X.

[0232] Optionally, the mounting plate 510 is provided with a plurality of perforated holes 511, which penetrate the mounting plate 510 along the first direction X.

[0233] Optionally, at least one perforation 511 is provided between every two adjacent grid plates 520.

[0234] The perforated hole 511 allows for connection between the two sides of the mounting plate 510, thereby preventing charged particles from accumulating on the side of the mounting plate 510 near the contact position of the moving contact 322 and the stationary contact 312 when an electric arc is generated. This facilitates the discharge of charged particles and ensures the arc extinguishing effect.

[0235] Referring to Figure 32, in some embodiments, the outer casing 100 is provided with an arc extinguishing hole 130, which connects the mounting cavity and the outer side of the outer casing 100 and is disposed adjacent to the arc extinguishing grid 500.

[0236] When an electric arc is generated at the stationary contact 312 and the moving contact 322, charged particles accumulate in the cavity. When they reach a certain density in the air, the arc extinguishing effect of the arc extinguishing grid 500 will deteriorate. The airflow can be formed by the pressure difference between the inside and outside of the outer shell 100 generated by the electric arc through the arc discharge hole 130, which drives the charged particles to be discharged, so as to ensure the arc extinguishing effect of the arc extinguishing grid 500.

[0237] This embodiment does not specifically limit the size and shape of the arc extinguishing hole 130. The size and shape of the arc extinguishing hole 130 can be flexibly determined according to the specific type of relay 10 and the working environment. If the size is too large, it may cause the arc to spread during the extinguishing process, increasing the safety risk; if the size is too small, it may limit the arc extinguishing speed and affect the arc extinguishing efficiency.

[0238] Optionally, the arc extinguishing hole 130 includes a first through-hole 131, which is located at the corner of the housing 100 and adjacent to the arc extinguishing grid 500. Positioning the first through-hole 131 at the corner of the housing 100 utilizes the spatial advantage of the corner to provide a smoother path for arc discharge. Inside the relay 10, the arc tends to move along the direction of the strongest electric field, and the corner layout helps guide the arc to discharge along the edge of the housing 100, reducing the potential threat of the arc to internal components. Furthermore, the corner position is relatively independent, with less interference from other components. This helps ensure that the arc is not obstructed by other components during discharge, thereby improving the efficiency and safety of arc discharge. Moreover, the corners of the housing 100 typically have better heat dissipation conditions because they are more easily exposed to outside air. Positioning the first through-hole 131 at the corner utilizes this heat dissipation advantage to accelerate the heat dissipation process after arc discharge, preventing damage to the housing 100 due to overheating.

[0239] Optionally, the housing 100 includes a first housing 110 and a second housing 120, which are detachably connected. The arc-extinguishing hole 130 includes a second through hole 132 located at the junction of the first housing 110 and the second housing 120. Positioning the second through hole 132 at the junction of the first housing 110 and the second housing 120 not only offers the advantage of ease of processing and forming but also generally does not significantly affect the structural strength of the housing 100. Through reasonable design and manufacturing processes, the relay 10 can be ensured to have excellent performance and reliability.

[0240] In the above embodiments, the arc-extinguishing grid 500 and the arc-dissipating hole 130 can effectively control or eliminate the influence of electric arc, thereby improving the safety and service life of the relay 10.

[0241] In some embodiments, components such as the moving spring 321 and the moving magnetic conductor 323 can also be used to reduce the impact of electric arc. Specifically, the connection position between the pushing system 200 and the connecting structure 230 is located on the side of the moving contact unit 320 away from the stationary contact unit 310.

[0242] Furthermore, the connection position between the actuating system 200 and the connecting structure 230 is located on the side of the moving spring 321 away from the moving contact 322.

[0243] Optionally, the connection position between the connecting structure 230 and the moving contact unit 320 is located on the side of the moving contact unit 320 away from the stationary contact unit 310. For example, the connecting structure 230 is connected to the side of the moving spring 321 away from the moving contact 322 or to the moving magnetic conductor 323.

[0244] Arranging the connection points of the actuation system 200 and the connection structure 230 and / or the connection points of the connection structure 230 and the moving contact unit 320 on the side of the moving contact unit 320 away from the stationary contact unit 310 can effectively block most of the splashing arc. This is because the arc mainly propagates along the contact gap, and the connection point is located outside this gap. By blocking the splashing arc with the moving contact unit 320, it is possible to effectively prevent the arc from damaging the actuation card 220 and other components, thereby improving the overall reliability and service life of the relay 10.

[0245] In some embodiments, the moving contact 322 is adapted to move between a first position in contact with the stationary contact 312 and a second position separated from the stationary contact 312, wherein the distance between the first position and the second position is greater than or equal to 5.5 mm. In this embodiment, the distance between the first position and the second position is the maximum contact gap of the relay 10. Setting the maximum contact gap to be greater than or equal to 5.5 mm can adapt to new requirements in fields such as photovoltaics and energy storage.

[0246] Referring to Figures 33 and 34, this disclosure also provides an electricity meter 20, which includes the aforementioned relay 10.

[0247] Optionally, the meter 20 is provided with an inner cavity 21 and a terminal block 22. The relay 10 is fixedly disposed in the inner cavity 21. The terminal block 22 has a wiring port 23 and a lead end 24. The interface is located in the inner cavity 21 and is connected to the terminal group of the relay 10. The lead end 24 is located outside the inner cavity 21 and is suitable for external wiring.

[0248] Since the meter 20 of this embodiment has all the technical features of the relay 10 of the above embodiment, it can also have all the advantages of the relay 10 of the above embodiment, which will not be repeated here.

[0249] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0250] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the scope of protection of this disclosure. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: The movable contact unit includes a movable spring and a movable contact disposed on one side of the movable spring; A stationary contact unit includes a stationary contact point, which is opposite to the moving contact point; An arc-extinguishing grid is disposed adjacent to the stationary contact and the moving contact.

2. The relay according to claim 1, characterized in that, The end of the moving touch unit facing the first direction is adapted to be close to or away from the stationary touch unit, and the end of the moving touch unit facing the opposite direction of the first direction is fixed in a relative position to the stationary touch unit.

3. The relay according to claim 2, characterized in that, The arc-extinguishing grid is located on one side of the contact position of the stationary contact and the moving contact in the first direction.

4. The relay according to any one of claims 1 to 3, characterized in that, The arc-extinguishing grid includes a mounting plate and multiple grid plates. The mounting plate is fixed in position, and the multiple grid plates are located on the side of the mounting plate near the stationary contact and the moving contact, and are fixedly connected to the mounting plate.

5. The relay according to claim 4, characterized in that, At least some of the grid plates are provided with an arc-inducing structure, which is set at an angle to the grid plate. One end of the arc-inducing structure is fixedly connected to the grid plate, and the other end extends toward the contact position close to the stationary contact and the moving contact.

6. The relay according to claim 5, characterized in that, The moving contact unit includes a plurality of moving contacts, and the stationary contact unit includes a plurality of stationary contacts. The plurality of moving contacts and the plurality of stationary contacts are arranged at intervals along the second direction, and there is a one-to-one correspondence between the plurality of moving contacts and the plurality of stationary contacts. At least some of the grid plates are provided with a plurality of the arc-inducing structures. The plurality of arc-inducing structures on the same grid plate are arranged at intervals along the second direction and correspond one-to-one with the plurality of contact positions formed by the plurality of moving contacts and the plurality of stationary contacts.

7. The relay according to claim 4, characterized in that, The arrangement direction of the plurality of grid plates is parallel to the arrangement direction of the moving contact unit and the stationary contact unit.

8. The relay according to claim 4, characterized in that, The mounting plate is provided with a perforated hole that penetrates through the mounting plate.

9. The relay according to any one of claims 1 to 3, characterized in that, Also includes: The housing has a mounting cavity, the moving contact unit, the stationary contact unit and the arc extinguishing grid are located in the mounting cavity, and the housing is provided with an arc extinguishing hole, which connects the mounting cavity and the outside of the housing and is disposed adjacent to the arc extinguishing grid.

10. The relay according to claim 9, characterized in that, The arc-removing hole includes a first through hole, which is located at a corner of the outer casing.

11. The relay according to claim 9, characterized in that, The outer casing includes a first housing and a second housing, which are detachably connected. The arc-expelling hole includes a second through hole located at the junction of the first housing and the second housing.

12. An electricity meter, characterized in that, Including the relay as described in any one of claims 1 to 11.

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