relay

Abstract

This application relates to a relay, comprising: a housing; a stationary spring assembly having a stationary contact; a moving spring assembly having a moving contact opposite to the stationary contact; an armature assembly movably disposed within the housing; and a self-locking assembly including a push clip, a connecting shaft, and a support member. One end of the push clip is connected to the moving spring assembly and movably engages with the support member. The armature assembly drives the connecting shaft to move the push clip and the support member, causing the push clip to close or open the moving contact with the stationary contact. The support member supports the push clip, fixing it relative to the connecting shaft and keeping the moving contact closed with the stationary contact. Thus, the support force provided by the support member resists forces acting on the push clip, allowing the support member to support the push clip and prevent the moving contact from opening with the stationary contact during a short circuit, improving the reliability of the relay and reducing safety hazards.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] A relay includes an armature, a moving spring, and a stationary spring. The armature drives a push-lock mechanism to control the contact between the moving contact on the moving spring and the stationary contact on the stationary spring. When a short-circuit current passes through the moving spring, a large electrodynamic repulsion force is generated between the moving and stationary contacts, exerting a significant force on the push-lock mechanism. When this force exceeds the holding force of the armature, it causes the armature to rotate, leading to the disconnection of the moving and stationary contacts and compromising the safety of the relay operation. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the electric repulsion between the moving and stationary contacts during a short circuit causes the armature to rotate, thus affecting the safety of the relay. A better solution is needed to provide a relay that keeps the moving and stationary contacts closed during a short circuit, thereby improving the relay's reliability and reducing potential safety hazards.

[0005] A relay, comprising:

[0006] case;

[0007] A stationary spring assembly having a stationary contact;

[0008] A moving spring assembly having a moving contact opposite to the stationary contact;

[0009] An armature assembly, movably disposed within the housing; and

[0010] The self-locking assembly includes a pusher, a connecting shaft, and a support member. One end of the pusher is connected to the spring assembly and can movably cooperate with the support member.

[0011] The armature assembly can drive the connecting shaft to move the push card and the support member, so that the push card pushes the moving contact to close or open with the stationary contact, and the support member can support the push card so that the push card is relatively fixed with the connecting shaft, so that the moving contact and the stationary contact remain closed.

[0012] In one embodiment of this application, the support member includes a support link and a fixed shaft. One end of the support link is rotatably connected to the connecting shaft, and the other end of the support link is rotatably connected to the fixed shaft. The fixed shaft is fixedly installed on the housing.

[0013] In one embodiment of this application, the relay further includes a mounting bracket disposed on the housing, one end of the fixing shaft is fixedly mounted on the mounting bracket, and the other end is fixedly mounted on the housing.

[0014] In one embodiment of this application, the support link includes a link body, a first end and a second end, the first end and the second end are disposed at both ends of the link body, the first end is rotatably connected to the connecting shaft, and the second end is rotatably connected to the fixed shaft.

[0015] In one embodiment of this application, the support member includes opposing support plates, the opposing support plates forming a groove, and the connecting shaft is slidably installed in the groove;

[0016] In the event of a short circuit, the support plate can support the connecting shaft so that the push card is fixed relative to the connecting shaft.

[0017] In one embodiment of this application, the slide is inclined relative to the extending direction of the moving spring assembly.

[0018] In one embodiment of this application, the relay further includes a first short-circuit ring disposed on the moving spring assembly;

[0019] The relay further includes a second short-circuit ring disposed on the stationary spring assembly.

[0020] In one embodiment of this application, the armature assembly includes an armature component and a swing arm. The armature component is disposed in the housing, and the output end of the armature component is connected to the swing arm. The swing arm is rotatably connected to the connecting shaft.

[0021] In one embodiment of this application, the number of the moving spring assembly, the stationary spring assembly, and the self-locking assembly are all two sets;

[0022] Each of the moving spring assemblies is correspondingly provided with each of the stationary spring assemblies. The connecting shafts in the two sets of self-locking assemblies are rotatably connected to both ends of the swing arm, and the push clips in the two sets of self-locking assemblies abut against the corresponding moving spring assemblies.

[0023] In one embodiment of this application, the moving spring assembly includes a plurality of moving contacts, and the stationary spring assembly includes a plurality of stationary contacts. The number of stationary contacts is equal to the number of moving contacts, and they are arranged in a one-to-one correspondence.

[0024] The armature component drives the swing arm and the connecting shaft to control the push card to push the moving spring assembly to move, so that the multiple moving contacts respectively contact or separate from the multiple sets of stationary contacts.

[0025] In one embodiment of this application, the push card includes a push body and a connecting end disposed on one side of the push body, the connecting end being rotatably connected to the connecting shaft, and the push body engaging with the moving spring assembly;

[0026] And / or, the moving spring assembly further includes a moving spring sheet and a compression spring, the moving contact is disposed on the moving spring sheet, the compression spring is disposed on the side of the moving spring sheet opposite to the moving contact, the compression spring has a first bending portion and a second bending portion, the first bending portion and the second bending portion are offset along the thickness direction of the push card, and respectively abut against two surfaces of the push card along the thickness direction.

[0027] By adopting the above technical solution, this application has at least the following technical effects:

[0028] In this application's relay, one end of the push card in the self-locking assembly is connected to the moving spring assembly, and the other end is rotatably connected to the connecting shaft and movably cooperates with the support member. When the armature assembly is activated, it drives the connecting shaft to move the push card and the support member. The push card pushes the moving spring assembly towards or away from the stationary spring assembly, causing the moving contact to close or open with the stationary contact. When the moving contact and stationary contact are closed, an electro-repulsive force is generated between them. This electro-repulsive force acts on the push card, causing it to exert a force. The support member provides support for the push card, keeping it in a relatively stable state and maintaining the closed state of the moving and stationary contacts. Even if a short circuit occurs and generates a large electro-repulsive force, the support force provided by the support member can resist the force exerted on the push card, allowing the support member to support the push card and prevent the moving contact from opening with the stationary contact when the relay is short-circuited, reducing the relay's safety hazards and improving its reliability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a relay in the first embodiment of this application from a first perspective.

[0030] Figure 2 for Figure 1 The relay shown is shown in top view.

[0031] Figure 3 for Figure 2The image shows a magnified view of the relay at point A.

[0032] Figure 4 for Figure 1 The diagram shown is a schematic of the relay from a second perspective.

[0033] Figure 5 for Figure 1 The diagram shown is a schematic of the relay from a third perspective.

[0034] Figure 6 for Figure 5 The image shows a magnified view of the relay at point B.

[0035] Figure 7 for Figure 4 The relay shown is shown in top view.

[0036] Figure 8 for Figure 7 The image shows a magnified view of the relay at point C.

[0037] Figure 9 This is a schematic diagram of a relay from one perspective in the second embodiment of this application.

[0038] Figure 10 for Figure 9 The diagram shows a relay from another perspective.

[0039] Figure 11 for Figure 9 The image shows a magnified view of the relay at point D.

[0040] Figure 12 for Figure 9 The relay shown is shown in top view.

[0041] Figure 13 for Figure 12 The image shows a magnified view of the relay at point E.

[0042] Figure 14 for Figure 9 The diagram shows a schematic of the housing in the relay.

[0043] Figure 15 for Figure 14 The top view of the casing shown.

[0044] Wherein: 10, relay; 100, housing; 200, stationary spring assembly; 210, stationary contact; 220, stationary spring; 300, moving spring assembly; 310, moving contact; 320, moving spring; 330, compression spring; 331, first bend; 332, second bend; 400, armature assembly; 410, armature component; 420, swing arm; 500, self-locking assembly; 510, push clip; 511, push body; 512, connecting end; 513, protrusion; 520, connecting shaft; 530, support member; 531, support link; 5311, link body; 5312, first end; 5313, second end; 532, fixed shaft; 533, support plate; 534, slide groove; 600, fixing frame; 700, first short-circuit ring; 800, second short-circuit ring. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 application. However, this application 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 application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 application 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 application.

[0047] 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, 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 application based on the specific circumstances.

[0049] In this application, 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.

[0050] 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 intervening 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 intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] Understandably, a relay is an electronic control device that plays a role in automatic adjustment, safety protection, and circuit switching in a circuit. A relay consists of an armature, a moving spring, and a stationary spring. The armature drives a push-lock mechanism to control the contact between the moving and stationary contacts. When the moving and stationary contacts are normally closed, a small electro-repulsive force exists between them, allowing them to remain closed. When the relay is short-circuited, a large short-circuit current flows through the moving spring, resulting in a large electro-repulsive force between the moving and stationary contacts, exerting a significant force on the push-lock mechanism. If this force exceeds the holding force of the armature, it will cause the armature to rotate, leading to the separation of the moving and stationary contacts. This can cause the moving and stationary contacts to explode, compromising the safety of the relay.

[0052] For this purpose, please refer to Figure 1 , Figure 2 , Figure 9 and Figure 10 This application provides a relay 10. Figure 1 This is a schematic diagram of the relay 10 in the first embodiment of this application from a first perspective. Figure 2 for Figure 1 The top view of relay 10 shown. Figure 9 This is a schematic diagram of the relay 10 in the second embodiment of this application from one perspective. Figure 10 for Figure 9 A schematic diagram of relay 10 shown from another perspective.

[0053] When the moving contact 310 and the stationary contact 210 are closed, an electro-repulsive force is generated. This electro-repulsive force exerts a force on the push card 510. The relay 10 of this application can provide support for the push card 510 through the self-locking component 500, so as to keep the push card 510 in a relatively stable state and prevent the moving contact 310 from disconnecting from the stationary contact 210. Even if a large electro-repulsive force is generated during a short circuit, the support force provided by the support member 530 can still resist the force on the push card 510, thereby supporting the push card 510 and preventing the moving contact 310 from disconnecting from the stationary contact 210 when the relay 10 is short-circuited. This reduces the safety hazards of the relay 10 and improves the reliability of the relay 10. The specific structure of the relay 10 in some embodiments is described below.

[0054] See Figures 1 to 6 , Figures 9 to 13 In one embodiment, the relay 10 includes a housing 100, a stationary spring assembly 200, a moving spring assembly 300, an armature assembly 400, and a self-locking assembly 500. Figure 3 for Figure 2 The image shows a partial enlarged view of relay 10 at point A. Figure 4 for Figure 1 The schematic diagram of relay 10 shown is from a second perspective. Figure 5 for Figure 1 The schematic diagram of relay 10 shown is from a third perspective. Figure 6 for Figure 5 The image shows a partial enlarged view of relay 10 at point B. Figure 11 for Figure 9 The image shows a partial enlarged view of relay 10 at point D.

[0055] The stationary spring assembly 200 has a stationary contact 210, and the movable spring assembly 300 has a movable contact 310 opposite to the stationary contact 210. The armature assembly 400 is movably disposed in the housing 100. The self-locking assembly 500 includes a push card 510, a connecting shaft 520, and a support member 530. One end of the push card 510 is connected to the movable spring assembly 300, and the other end is rotatably connected to the connecting shaft 520. The connecting shaft 520 is also rotatably connected to the armature assembly 400 and movably cooperates with the support member 530. The armature assembly 400 can drive the connecting shaft 520 to move the push card 510 and the support member 530, so that the push card 510 pushes the movable contact 310 to close or open with the stationary contact 210. The support member 530 can support the push card 510 so that the push card 510 is relatively fixed with the connecting shaft 520, so that the movable contact 310 and the stationary contact 210 remain closed.

[0056] The housing 100 can be the base of the relay 10. All components of the relay 10 are housed within the housing 100, allowing for integrated installation of all components. Optionally, the relay 10 may also include a cover plate (not shown) that covers the housing 100 to encapsulate the relay 10. A moving spring assembly 300 and a stationary spring assembly 200 are disposed within the housing 100. The moving spring assembly 300 is movable within the housing 100 to close or open with the stationary spring assembly 200, thereby enabling the relay 10 to conduct or disconnect.

[0057] To facilitate the description of the structure of relay 10, the terms "first direction," "second direction," and "third direction" are introduced here. For example... Figure 1 , Figure 2 and Figure 9 As shown, the direction of motion of the moving spring assembly 300 is denoted as the first direction, that is, the moving spring assembly 300 moves along the first direction to close or open with the stationary spring assembly 200. The extension direction of the moving spring assembly 300 and the stationary spring assembly 200 is denoted as the second direction. The direction perpendicular to the first direction and the second direction is the third direction.

[0058] Specifically, the stationary spring assembly 200 includes a stationary contact 210 and a stationary spring sheet 220. The stationary spring sheet 220 is fixedly disposed in the housing 100, and the stationary contact 210 is disposed on the stationary spring sheet 220. The movable spring assembly 300 includes a movable contact 310 and a movable spring sheet 320. The movable spring sheet 320 is movably disposed in the housing 100 along a first direction and is disposed opposite to the stationary spring sheet 220. The movable contact 310 is disposed on the side of the movable spring sheet 320 facing the stationary spring sheet 220.

[0059] The armature assembly 400 is the power source for the relay 10 and is disposed within the housing 100. The armature assembly 400 drives the movable spring 320 to move along a first direction, causing the movable spring 320 to move closer to or further away from the stationary spring 220 along the first direction, thereby closing or opening the movable contact 310 and the stationary contact 210, thus enabling the relay 10 to conduct or disconnect. The self-locking assembly 500 is a transmission component that enables the armature assembly 400 and the movable spring 320 to move together. The self-locking assembly 500 is movably disposed within the housing 100, with one end rotatably connected to the output end of the armature assembly 400 and the other end abutting against the movable spring 320.

[0060] When the armature assembly 400 is activated, it drives the self-locking assembly 500 to move within the housing 100. The self-locking assembly 500 then pushes the moving spring 320 along a first direction toward or away from the stationary spring 220, causing the moving contact 310 to close or open with the stationary contact 210. When the relay 10 is operating, the holding force of the armature assembly 400 pushes the self-locking assembly 500 to push the moving spring 320 along the first direction toward the stationary spring 220, causing the moving contact 310 to conduct with the stationary contact 210, thereby activating the relay 10.

[0061] When the moving contact 310 and the stationary contact 210 are normally closed, there is no large current, and a small electro-repulsive force is generated between them, making it difficult for them to disconnect. When the relay 10 is short-circuited, a large short-circuit current will pass through the moving spring 320, which will generate a large electro-repulsive force between the stationary contact 210 and the moving contact 310. This electro-repulsive force will exert a large force on the push card 510, which can easily exceed the holding force of the armature assembly 400 on the moving spring 320. This electro-repulsive force will push the moving spring 320 away from the stationary spring 220 in the first direction, causing the armature assembly 400 to rotate. This poses a risk of explosion to the relay 10 and presents a safety hazard.

[0062] Therefore, this application employs a self-locking assembly 500 to drive the armature assembly 400 and the movable spring 320. The armature assembly 400 can push the movable spring 320 to move via the self-locking assembly 500. The self-locking assembly 500 can support the movable spring 320. When the movable contact 310 and the stationary contact 210 are normally closed, a small electro-repulsive force is generated between the movable contact 310 and the stationary contact 210. This electro-repulsive force cannot push the movable spring 320 away from the stationary spring 220 in the first direction. At the same time, the self-locking assembly 500 supports the movable spring 320, further keeping the movable contact 310 and the stationary contact 210 closed.

[0063] During a short circuit, the self-locking assembly 500 can also support the moving spring 320 to lock it in place. When a short-circuit current passes through the moving spring 320, the electro-repulsive force between the moving contact 310 and the stationary contact 210 can push the moving spring 320 away from the stationary spring 220. At this time, the self-locking assembly 500 can support the moving spring 320, providing support for it so that the moving contact 310 and the stationary contact 210 remain closed, restricting the rotation of the armature assembly 400 and ensuring the safety of the relay 10.

[0064] See Figures 1 to 6 , Figures 9 to 13 In one embodiment, the self-locking assembly 500 includes a push card 510, a connecting shaft 520, and a support member 530. The push card 510 extends generally along a first direction. The connecting shaft 520 is rotatably connected to the push card 510 and the output end of the armature assembly 400. The end of the push card 510 away from the connecting shaft 520 is movably connected to a movable spring 320. The connecting shaft 520 and the support member 530 are movably engaged to movably support the push card 510 to the housing 100.

[0065] When the armature assembly 400 is activated, the armature assembly 400 can drive the connecting shaft 520 to move the push card 510, so that the push card 510 pushes the moving spring 320 to move in a general direction, so that the moving spring 320 moves closer to or further away from the stationary spring 220 in the first direction, thereby causing the moving contact 310 to close or open with the stationary contact 210, thereby realizing the conduction or disconnection of the relay 10.

[0066] When the moving contact 310 and the stationary contact 210 are normally closed, a small electro-repulsive force is generated between them. This electro-repulsive force cannot push the moving spring 320 away from the stationary spring 220 in the first direction. At the same time, the support member 530 provides a supporting force to the push card 510, which enables the push card 510 to further push the moving spring 320 toward the stationary spring 220, thereby keeping the moving contact 310 and the stationary contact 210 closed.

[0067] When relay 10 is short-circuited, a large short-circuit current flows through the moving spring 320, causing a large electro-repulsive force between the moving contact 310 and the stationary contact 210. This electro-repulsive force is transmitted through the moving spring 320 to the push card 510, exerting a large force on the push card 510. Under this force, the push card 510 pushes the moving spring 320 away from the stationary spring 220, causing the moving contact 310 to disconnect from the stationary contact 210. At this time, the support member 530 can support the push card 510, providing support force for the push card 510.

[0068] In this way, the push card 510 can remain relatively stable under the action of the supporting force and the force, so that the push card 510 and the connecting shaft 520 are relatively fixed, thereby locking the push card 510 and the connecting shaft 520. This restricts the moving spring 320 from moving away from the stationary spring 220 in the first direction, so that the moving contact 310 and the stationary contact 210 remain closed. As a result, the armature assembly 400 will not be rotated by the rotational force of the moving contact 310 and the stationary contact 210 being disconnected, thus avoiding the rotation of the armature assembly 400 and reducing the safety hazard of short circuit of the relay 10.

[0069] In the relay 10 of the above embodiment, when the moving contact 310 and the stationary contact 210 are closed, an electro-repulsive force is generated between the moving contact 310 and the stationary contact 210. This electro-repulsive force acts on the push card 510, causing the push card 510 to generate a force. The support member 530 provides support for the push card 510, keeping it in a relatively stable state and preventing the moving contact 310 from disconnecting from the stationary contact 210. Even if a short circuit occurs and generates a large electro-repulsive force, the support force provided by the support member 530 can resist the force on the push card 510, allowing the support member 530 to support the push card 510. This prevents the moving contact 310 from disconnecting from the stationary contact 210 when the relay 10 is short-circuited, reducing the safety hazards of the relay 10 and improving its reliability.

[0070] In one embodiment, the support member 530 directly supports the push card 510. The end of the support member 530 directly abuts against the push card 510, providing support force to the push card 510. Of course, in other embodiments of this application, the support member 530 may also indirectly provide support force to the push card 510. The support member 530 provides support to the push card 510 via a connecting shaft 520.

[0071] The relay 10 of this application is applicable to structures with short-circuit rings as well as structures without short-circuit rings.

[0072] In one embodiment, no short-circuit ring is provided in the relay 10. When the relay 10 is short-circuited, a large electro-repulsive force is generated between the moving contact 310 and the stationary contact 210. This electro-repulsive force exerts a large force on the push card 510. The supporting force provided by the support member 530 can resist the force on the push card 510, thereby supporting the push card 510 and maintaining a relatively balanced state between the push card 510 and the support member 530, and preventing the moving contact 310 from disconnecting from the stationary contact 210 when short-circuited.

[0073] In one embodiment, a short-circuit ring is provided in the relay 10. When the relay 10 is short-circuited, the magnetic field generated by the short-circuit ring can reduce the electro-repulsive force between the moving contact 310 and the stationary contact 210. At the same time, the short-circuit ring can also generate an attractive force, so that the part of the moving spring 320 that contacts the push card 510 is subjected to a reaction force away from the stationary spring 220, which generates a large force on the push card 510. The supporting force provided by the support member 530 can resist the force on the push card 510, so as to support the push card 510 and keep the push card 510 and the support member 530 in a relatively balanced state, thus preventing the moving contact 310 from disconnecting from the stationary contact 210 when short-circuited.

[0074] See Figures 1 to 6 , Figures 9 to 13 In one embodiment, the relay 10 further includes a first short-circuit ring 700 disposed on the moving spring assembly 300. The relay 10 also includes a second short-circuit ring 800 disposed on the stationary spring assembly 200. The first short-circuit ring 700 is disposed on the moving spring 320, and the second short-circuit ring 800 is disposed on the stationary spring 220. The first short-circuit ring 700 and the second short-circuit ring 800 are correspondingly disposed and can play a role in preventing short circuits. Optionally, the first short-circuit ring 700 and the second short-circuit ring 800 are permanent magnets. Optionally, the first short-circuit ring 700 and the second short-circuit ring 800 are arranged in a ring structure, where the ring structure refers to a structure with a closed cross-section.

[0075] When a short-circuit current passes through the moving spring 320, a large electrodynamic repulsion is generated between the moving contact 310 and the stationary contact 210. Simultaneously, the first short-circuit ring 700 and the second short-circuit ring 800 attract each other and generate a magnetic field, reducing the electrodynamic repulsion between the moving contact 310 and the stationary contact 210. The attraction between the first short-circuit ring 700 and the second short-circuit ring 800 causes deformation in the central region of the moving spring 320. Consequently, the moving spring 320, with the moving contact 310 as a fulcrum, pushes the moving spring 320 closer to the pusher 510 in a direction away from the stationary spring 220, generating a significant force on the pusher 510.

[0076] At this time, the support member 530 supports the push card 510, providing support force for the push card 510. The support force of the support member 530 on the push card 510 can cancel out or form a resultant force, so that the push card 510 and the support member 530 maintain a relatively balanced state, thereby keeping the moving contact 310 and the stationary contact 210 closed, and restricting the rotation of the armature assembly 400, so as to prevent the moving contact 310 and the stationary contact 210 from opening in the event of a short circuit.

[0077] Thus, after the relay 10 has a first short-circuit ring 700 on the moving spring 320 and a second short-circuit ring 800 on the stationary spring 220, the first short-circuit ring 700 and the second short-circuit ring 800 attract each other to reduce the electric repulsion between the moving contact 310 and the stationary contact 210. Then, the reduced electric repulsion exerts a force on the push card 510, and the push card 510 can be supported by the support member 530 so that the push card 510 is relatively fixed with the connecting shaft 520, restricting the disconnection of the moving contact 310 and the stationary contact 210, and restricting the rotation of the armature assembly 400.

[0078] It is worth noting that regardless of whether a short-circuit ring is provided in relay 10, the supporting force provided by support member 530 to push card 510 can fix push card 510 relatively to the connecting shaft 520. Especially in the case of a short circuit, the supporting force provided by support member 530 can cancel out or form a resultant force with the force on push card 510, so as to keep push card 510 and support member 530 in a relatively balanced state, so as to reliably support push card 510, prevent the moving contact 310 from disconnecting from stationary contact 210 in the event of a short circuit, limit the rotation of armature assembly 400, and thus ensure the reliability of relay 10. In the following description of the structure of relay 10, the presence or absence of a short-circuit ring will not be limited.

[0079] In one embodiment, the support 530 can provide a supporting force to resist the force exerted on the push card 510 by the electric repulsion between the stationary contact 210 and the moving contact 310, and can also resist the rotational force of the armature assembly 400 that drives the moving contact 310 to separate from the stationary contact 210.

[0080] When the short-circuit current becomes large enough, the armature assembly 400 may change its state under the influence of an external magnetic field, thereby generating a rotational force that drives the moving contact 310 to separate from the stationary contact 210. The electro-repulsive force between the moving contact 310 and the stationary contact 210 can exert a force on the push card 510. In this case, the support member 530 can provide a supporting force for the push card 510, which can resist the force acting on the push card 510, so that the push card 510 and the connecting shaft 520 remain relatively fixed, and the moving contact 310 and the stationary contact 210 remain closed. At the same time, the supporting force can also form a resultant force opposite to the rotational force with the force acting on it, so as to resist the rotational force that drives the moving contact 310 to separate from the stationary contact 210, and limit the rotation of the armature assembly 400.

[0081] The relay 10 of this application has a support member 530 at one end of the push card 510 and the connecting shaft 520, which movably supports the push card 510 to the housing 100. When the relay 10 is short-circuited, regardless of whether the moving spring 320 and the stationary spring 220 are provided with the first short-circuit ring 700 and the second short-circuit ring 800, the support member 530 can provide support force for the push card 510, so that the push card 510 and the connecting shaft 520 remain relatively fixed, the moving contact 310 and the stationary contact 210 remain closed, the armature assembly 400 is restricted from rotating, and the reliability of the relay 10 is guaranteed.

[0082] See Figures 1 to 8 In the first embodiment of this application, the support member 530 includes a support link 531 and a fixed shaft 532. One end of the support link 531 is rotatably connected to the connecting shaft 520, and the other end of the support link 531 is rotatably connected to the fixed shaft 532. The fixed shaft 532 is fixedly installed on the housing 100. Figure 7 for Figure 4 The top view of relay 10 shown. Figure 8 for Figure 7 A magnified view of the relay 10 at point C.

[0083] The fixed shaft 532 is a stationary component that provides rotational support for the support link 531. The fixed shaft 532 is disposed within the housing 100 along a third direction and is mounted on the housing 100 to provide support force to the connecting shaft 520 and the push clip 510, thereby locking the connecting shaft 520 and the push clip 510. The support link 531 is a component that connects the connecting shaft 520 and the fixed shaft 532. One end of the support link 531 is rotatably connected to the connecting shaft 520, and the other end of the support link 531 is rotatably connected to the fixed shaft 532.

[0084] When the armature assembly 400 is activated, it can drive the connecting shaft 520 to move the push card 510. During the movement of the push card 510, the connecting shaft 520 can also drive the support link 531 to move relative to the fixed shaft 532. The cooperation between the support link 531 and the fixed shaft 532 can support the push card 510 so that the push card 510 pushes the moving spring 320 to move closer to or away from the stationary spring 220 in the first direction, thereby realizing the closing or opening of the moving contact 310 and the stationary contact 210.

[0085] When relay 10 is short-circuited, the electro-repulsive force between the moving contact 310 and the stationary contact 210 exerts a force on the push card 510. At this time, the supporting effect of the fixed shaft 532 on the supporting link 531 enables the supporting link 531 to generate a supporting force on the push card 510, thereby supporting the push card 510 and fixing it relatively to the connecting shaft 520. This supporting force can resist the force on the push card 510, keeping the moving contact 310 and the stationary contact 210 closed and preventing the moving contact 310 and the stationary contact 210 from opening.

[0086] When the support link 531 supports the push card 510, the push card 510 and the support link 531 can be at a 180° angle, that is, the push card 510 and the support link 531 are in a straight line. The supporting force of the support link 531 and the force on the push card 510 can be roughly canceled out along the first direction. In this way, the supporting force of the support link 531 can resist the supporting force on the push card 510, so that the moving contact 310 and the stationary contact 210 remain closed.

[0087] When the support link 531 supports the push card 510, there can be a certain angle between the push card 510 and the support link 531. That is, the supporting force and the force acting on the push card 510 are inclined, the push card 510 and the support link 531 are not on the same straight line, and an obtuse angle is formed between the push card 510 and the support link 531. The supporting force of the support link 531 and the force acting on the push card 510 can generate a resultant force in the second direction away from the armature assembly 400. In this way, the supporting force of the support link 531 can resist the force acting on the push card 510, so that the moving contact 310 and the stationary contact 210 remain closed. At the same time, the resultant force generated by the supporting force and the force acting on the push card can also cancel out the rotational force of the armature assembly 400, preventing the armature assembly 400 from rotating.

[0088] Understandably, the fixed shaft 532 is fixed to the housing 100 to support the support link 531. The form in which the fixed shaft 532 is fixed to the housing 100 is, in principle, unrestricted; it can be directly and / or indirectly fixed to the housing 100. See also... Figures 1 to 8 In one embodiment, the relay 10 further includes a mounting bracket 600, which is disposed in the housing 100. One end of the fixing shaft 532 is fixedly mounted to the mounting bracket 600, and the other end is fixedly mounted to the housing 100.

[0089] The fixing bracket 600 is fixedly installed on the housing 100. One end of the fixing shaft 532 is installed on the fixing bracket 600 and indirectly fixed to the housing 100 through the fixing bracket 600. The other end of the fixing shaft 532 is directly fixed to the housing 100. In this way, the fixing shaft 532 can be fixedly installed on the housing 100 so that the fixing shaft 532 can provide reliable support for the support link 531, thereby ensuring the support effect of the support member 530 on the push card 510.

[0090] Understandably, the structural form of the fixing bracket 600 is not limited in principle, as long as the fixing bracket 600 can fix and install the fixing shaft 532. In this embodiment, the fixing bracket 600 is a triangular support (e.g., Figure 2 Above the 420-degree swing arm) or a plate-like support (such as...) Figure 2 (Below the middle swing arm 420). In other embodiments of this application, the fixing frame 600 may also be a support base, a support frame, or other structures capable of fixing the fixing frame 600. Of course, the fixing frame 600 may also be a frame in the relay 10 that supports other components.

[0091] See Figures 1 to 8 In one embodiment, the support link 531 includes a link body 5311, a first end 5312 and a second end 5313. The first end 5312 and the second end 5313 are disposed at both ends of the link body 5311. The first end 5312 is rotatably connected to the connecting shaft 520, and the second end 5313 is rotatably connected to the fixed shaft 532.

[0092] The connecting rod body 5311 is the main rod supporting the connecting rod 531. One end of the connecting rod body 5311 is provided with a first end 5312, and the other end of the connecting rod body 5311 is provided with a second end 5313. In this way, the supporting connecting rod 531 is rotatably connected to the connecting shaft 520 through the first end 5312, and rotatably connected to the fixed shaft 532 through the second end 5313.

[0093] In one embodiment, the main body 5311, the first end 5312, and the second end 5313 of the connecting rod are integrally formed. This ensures the structural strength of the supporting connecting rod 531, enabling it to provide sufficient support force to support the connecting shaft 520 and the pusher 510.

[0094] See Figures 1 to 8In this embodiment, the relay 10 uses a support link 531 and a fixed shaft 532 to support the push card 510. The cooperation between the support link 531 and the fixed shaft 532 can generate a supporting force on the push card 510. This supporting force can resist the force exerted on the push card 510, so that the push card 510 is relatively fixed to the connecting shaft 520, preventing the moving contact 310 from disconnecting from the stationary contact 210, preventing the armature assembly 400 from rotating, and ensuring the reliability of the relay 10.

[0095] See Figures 9 to 15 In the second embodiment of this application, the support member 530 includes opposing support plates 533, which form a groove 534, in which the connecting shaft 520 is slidably mounted. During a short circuit, the support plates 533 can support the connecting shaft 520, thereby fixing the push card 510 relative to the connecting shaft 520. Figure 12 for Figure 9 The top view of relay 10 shown. Figure 13 for Figure 12 The image shows a partial enlarged view of relay 10 at point E. Figure 14 for Figure 9 The schematic diagram of the housing 100 in the relay 10 shown is shown. Figure 15 for Figure 14 The top view of the housing 100 shown.

[0096] The support plate 533 is disposed opposite to the bottom wall of the housing 100 and protrudes from the bottom wall of the housing 100 in a third direction. The oppositely disposed support plate 533 and the bottom wall of the housing 100 can form a sliding groove 534. The bottom of the connecting shaft 520 is slidably disposed in the sliding groove 534. The sliding groove 534 can guide the movement of the connecting shaft 520. At the same time, the support plate 533 can also provide support for the connecting shaft 520 through the inner wall of the sliding groove 534, thereby providing support for the push card 510.

[0097] When the armature assembly 400 is activated, it can drive the connecting shaft 520 to move the push card 510. During the movement of the push card 510, the connecting shaft 520 can also move along the slide groove 534. At this time, the inner wall of the slide groove 534 can support the connecting shaft 520 to limit the movement trajectory of the connecting shaft 520, so that the push card 510 pushes the moving spring 320 to approach or move away from the stationary spring 220 in the first direction, thereby realizing the closing or opening of the moving contact 310 and the stationary contact 210.

[0098] When relay 10 is short-circuited, the electro-repulsive force between moving contact 310 and stationary contact 210 exerts a force on push card 510. At this time, support plate 533 can support connecting shaft 520 through the inner wall of slide groove 534, thereby generating a supporting force on push card 510, thus fixing push card 510 and connecting shaft 520 relatively. This supporting force can resist the force on push card 510, keeping moving contact 310 and stationary contact 210 closed and preventing moving contact 310 and stationary contact 210 from disconnecting.

[0099] See Figures 9 to 15 In one embodiment, the slide groove 534 is inclined along the extending direction of the movable spring assembly 300. That is, the support plate 533 extends generally along the second direction and has a certain inclination angle relative to the second direction. Thus, when the armature assembly 400 is activated, the connecting shaft 520 can move along the inclined slide groove 534 to support and limit the movement of the push card 510, allowing the push card 510 to push the movable spring 320 to move along the first direction. Furthermore, in the event of a short circuit, the inclined slide groove 534 can also support the connecting shaft 520 to generate a supporting force on the push card 510, thereby fixing the push card 510 relative to the connecting shaft 520.

[0100] See Figures 9 to 15 In this embodiment, the relay 10 uses a groove 534 to support the push card 510. During a short circuit, the groove 534 supports the push card 510 to generate a supporting force. This supporting force can resist the force acting on the push card 510, so that the push card 510 is relatively fixed to the connecting shaft 520, preventing the moving contact 310 from disconnecting from the stationary contact 210, preventing the armature assembly 400 from rotating, and ensuring the reliability of the relay 10.

[0101] See Figure 2 , Figure 5 , Figure 7 , Figure 9 and Figure 12 In one embodiment, the armature assembly 400 includes an armature component 410 and a swing arm 420. The armature component 410 is disposed in the housing 100, and its output end is connected to the swing arm 420, driving the swing arm 420 to move. The swing arm 420 is rotatably connected to the connecting shaft 520. The armature component 410 is the power source of the armature assembly 400, and the swing arm 420 is the motion output component of the armature assembly 400.

[0102] An armature component 410 is disposed within a housing 100. The output end of the armature component 410 is rotatable within the housing 100 and is inserted into a swing arm 420. The swing arm 420 is movably arranged within the housing 100 generally along a second direction, and one end of the swing arm 420 is rotatably connected to a connecting shaft 520. The structure and working principle of the armature component 410 are prior art and will not be described further in this application.

[0103] When the output end of the armature component 410 rotates in the housing 100, it can push the swing arm 420 to move in the second direction. In turn, the swing arm 420 can drive the connecting shaft 520 to move, so that the connecting shaft 520 can drive the push card 510 and the support member 530 to move. The push card 510 can push the moving spring 320 to move closer to or further away from the stationary spring 220 in the first direction, so that the moving contact 310 and the stationary contact 210 are closed or opened.

[0104] When relay 10 is short-circuited, the supporting force of support member 530 on push card 510 can resist the force on push card 510, preventing moving contact 310 from disconnecting from stationary contact 210. When the short-circuit current is large enough, armature component 410 changes state under the influence of external magnetic field, generating a rotational force that disconnects moving contact 310 from stationary contact 210. At this time, the supporting force can also resist the rotational force, limiting the rotation of the output terminal of armature component 410.

[0105] See Figure 2 , Figure 5 , Figure 7 , Figure 9 and Figure 12 In one embodiment, there are two sets of moving spring assembly 300, stationary spring assembly 200 and self-locking assembly 500. Each moving spring assembly 300 is correspondingly provided with each stationary spring assembly 200. The connecting shaft 520 in the two sets of self-locking assemblies 500 is rotatably connected to both ends of the swing arm 420. The push card 510 in the two sets of self-locking assemblies 500 respectively abuts against the corresponding moving spring assembly 300.

[0106] Two sets of moving spring assemblies 300 are spaced apart in the housing 100 along a first direction, and two sets of stationary spring assemblies 200 are respectively arranged corresponding to the two sets of moving spring assemblies 300. Each set of moving spring assemblies 300 corresponds to a set of self-locking assemblies 500. Each set of self-locking assemblies 500 abuts against the corresponding moving spring 320 through a pusher 510. The output end of the armature component 410 is connected to the middle region of the swing arm 420, and the two ends of the swing arm 420 are respectively connected to the connecting shafts 520 of a set of self-locking assemblies 500. When the armature component 410 is activated, it can drive the swing arm 420 to move simultaneously, thereby causing the pusher 510 to push the corresponding moving spring 320 closer to or further away from the stationary spring 220 along the first direction.

[0107] In this way, by using a set of armature components 410 and swing arm 420, two sets of moving spring assemblies 300 can be driven to move simultaneously, so that the two sets of moving spring assemblies 300 and the corresponding stationary spring assembly 200 are closed or opened, increasing the current carrying capacity of relay 10, so that relay 10 can be applied to high current equipment to meet the usage requirements of different working conditions.

[0108] In one embodiment, the two sets of moving spring assemblies 300 are arranged centrally symmetrically, and the two sets of stationary spring assemblies 200 are correspondingly arranged with the two sets of moving spring assemblies 300. For example, in... Figure 2 , Figure 7 and Figure 12 In this housing 100, one set of moving spring assemblies 300 and stationary spring assemblies 200 is located at the lower left corner, and another set of moving spring assemblies 300 and stationary spring assemblies 200 is located at the upper right corner. The output end of the armature component 410 is inserted into the middle region of the swing arm 420, and both ends of the swing arm 420 are rotatably connected to a set of self-locking components 500. Thus, when the armature component 410 drives the swing arm 420 to move, the swing arm 420 can simultaneously drive the two sets of self-locking components 500 to push the moving spring 320 closer to or further away from the stationary spring 220 in a first direction.

[0109] See Figure 1 , Figure 5 , Figure 9 and Figure 10 In one embodiment, the moving spring assembly 300 includes a plurality of moving contacts 310, and the stationary spring assembly 200 includes a plurality of stationary contacts 210. The number of stationary contacts 210 is equal to the number of moving contacts 310, and they are arranged in a one-to-one correspondence. The armature component 410 drives the swing arm 420 and the connecting shaft 520 to control the pusher 510 to push the moving spring assembly 300 to move, so that the plurality of moving contacts 310 respectively contact or separate from the plurality of sets of stationary contacts 210. It is worth noting that "plural" in this application refers to at least two.

[0110] Multiple moving contacts 310 are spaced apart along a third direction on the side of the moving spring 320 facing the stationary spring 220, and multiple stationary contacts 210 are spaced apart along a third direction on the side of the stationary spring 220 facing the moving spring 320. The number of moving contacts 310 and stationary contacts 210 are equal and they are arranged in a one-to-one correspondence. When the pusher 510 pushes the moving spring 320 toward the stationary spring 220, each moving contact 310 can close with the corresponding stationary contact 210.

[0111] Thus, multiple moving contacts 310 enable the moving spring assembly 300 to form a multi-contact structure, and multiple stationary contacts 210 enable the stationary spring assembly 200 to form a multi-contact structure. In this way, when the moving spring assembly 300 and the stationary spring assembly 200 are closed, the multiple moving contacts 310 can respectively contact the multiple stationary contacts 210, thereby increasing the current-carrying capacity of the relay 10 and improving safety.

[0112] In this embodiment, each movable spring 320 is provided with three movable contacts 310, and each stationary spring 220 is provided with three stationary contacts 210. Of course, in other embodiments of this application, each movable spring 320 may also be provided with two movable contacts 310 or other numbers of movable contacts 310, and the number of stationary contacts 210 on the stationary spring 220 is equal to the number of movable contacts 310.

[0113] See Figures 3 to 9 , Figures 11 to 13 In one embodiment, the push card 510 includes a push body 511 and a connecting end 512 disposed on one side of the push body 511. The connecting end 512 is rotatably connected to the connecting shaft 520. The push body 511 abuts against the moving spring assembly 300. The push body 511 is the main component of the push card 510, and the push body 511 extends generally along a first direction.

[0114] A connecting end 512 is located at one end of the pushing body 511 and is rotatably mounted on the connecting shaft 520. The other end of the pushing body 511 can abut against the movable spring 320. The connecting end 512 facilitates the rotatable connection between the pushing card 510 and the connecting shaft 520. Furthermore, the end of the pushing body 511 furthest from the connecting end 512 ensures sufficient contact area with the movable spring 320, thereby guaranteeing a proper pushing effect on the movable spring 320.

[0115] In this way, when the armature component 410 drives the swing arm 420 to move, the swing arm 420 can drive the connecting end 512 to move through the connecting shaft 520, and then the connecting end 512 can drive the pushing body 511 to move, so that the pushing body 511 can push the moving spring 320 to move closer to or further away from the stationary spring 220 in the first direction.

[0116] In one embodiment, the connecting end 512 and the pushing body 511 are an integral structure. This simplifies the assembly process and improves the structural strength of the connecting end 512 and the pushing body 511, ensuring the performance of the pushing card 510.

[0117] See Figures 3 to 9 , Figures 11 to 13 In one embodiment, the movable spring assembly 300 further includes a movable spring sheet 320 and a compression spring 330. The movable contact 310 is disposed on the movable spring sheet 320, and the compression spring 330 is disposed on the side of the movable spring sheet 320 away from the movable contact 310. The compression spring 330 has a first bending portion 331 and a second bending portion 332. The first bending portion 331 and the second bending portion 332 are offset along the thickness direction of the push card 510 and respectively abut against two surfaces of the push card 510 along the thickness direction.

[0118] The compression spring 330 is disposed on the surface of the movable spring 320 away from the stationary contact 210, and the end of the push card 510 away from the connecting shaft 520 can abut against the compression spring 330. When the push card 510 pushes the movable spring assembly 300, the push card 510 can push the compression spring 330 to move, and then the compression spring 330 can push the movable spring 320 to move closer to or away from the stationary spring 220 in the first direction, so as to realize the closing or opening of the movable contact 310 and the stationary contact 210.

[0119] Furthermore, the thickness of the push card 510 extends along the second direction. The compression spring 330 has a first bent portion 331 and a second bent portion 332, which are offset from each other along the second direction. In this way, the first bent portion 331 and the second bent portion 332 can respectively abut against the two surfaces of the push card 510 along the second direction, thereby limiting the movement between the compression spring 330 and the push card 510, ensuring the accuracy of the limiting between the compression spring 330 and the push card 510, and ensuring the consistency of the movement between the compression spring 330 and the push card 510.

[0120] In this embodiment, the length of the first bent portion 331 along the second direction is greater than the length of the second bent portion 332 along the second direction. Thus, the first bent portion 331 can abut against the lower surface of the push card 510 along the second direction, and the second bent portion 332 can abut against the upper surface of the push card 510 along the second direction, thereby achieving a limiting relationship between the compression spring 330 and the push card 510.

[0121] Simultaneously, when the first short-circuit ring 700 and the second short-circuit ring 800 are attracted to each other, the compression spring 330 and the moving spring 320 together exert a greater force on the push card 510, increasing the resultant force generated at the connecting shaft 520. The greater the resultant force at the connecting shaft 520, the less likely the armature component 410 is to move during a short circuit, further enhancing the reliability and stability of the relay 10.

[0122] See Figure 6 In one embodiment, the push card 510 further includes a protrusion 513 extending in a third direction and located at one end of the push body 511 near the movable spring 320. A first bend 331 and a second bend 332 can abut against the protrusion 513 in a second direction. Thus, the first bend 331 and the second bend 332 can clamp the protrusion 513, thereby limiting the position of the push card 510.

[0123] The relay 10 of this application generates an electro-repulsive force between the moving contact 310 and the stationary contact 210 when the moving contact 310 and the stationary contact 210 are closed. This electro-repulsive force acts on the push card 510, causing the push card 510 to exert a force. The support member 530 provides support for the push card 510, keeping it in a relatively stable state and preventing the moving contact 310 from disconnecting from the stationary contact 210. Even if a short circuit occurs and generates a large electro-repulsive force, the support force provided by the support member 530 can resist the force exerted on the push card 510, allowing the support member 530 to support the push card 510. This prevents the moving contact 310 from disconnecting from the stationary contact 210 when the relay 10 is short-circuited, reducing the safety hazards of the relay 10 and improving its reliability.

[0124] Furthermore, the support member 530 may include a support link 531 and a fixed shaft 532, which support the push card 510. The support member 530 may also include a support plate 533 disposed opposite to each other, which can form a groove 534. The inner wall of the groove 534 can support the push card 510. In this way, the supporting force generated by the support member 530 can resist the force generated by the push card 510, preventing the moving contact 310 from disconnecting from the stationary contact 210. When the relay 10 is short-circuited, regardless of whether a short-circuit ring is provided on the moving spring 320 and the stationary spring 220, the support member 530 can provide supporting force for the push card 510 to keep the moving contact 310 and the stationary contact 210 closed, restricting the rotation of the armature assembly 400 and ensuring the reliability of the relay 10.

[0125] 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.

[0126] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively 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 application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: case; A stationary spring assembly having a stationary contact; A moving spring assembly having a moving contact opposite to the stationary contact; An armature assembly is movably disposed within the housing; as well as The self-locking assembly includes a pusher, a connecting shaft, and a support member. One end of the pusher is connected to the spring assembly and can movably cooperate with the support member. The armature assembly can drive the connecting shaft to move the push card and the support member, so that the push card pushes the moving contact to close or open with the stationary contact, and the support member can support the push card so that the push card is relatively fixed with the connecting shaft, so that the moving contact and the stationary contact remain closed.

2. The relay according to claim 1, characterized in that The support member includes a support link and a fixed shaft. One end of the support link is rotatably connected to the connecting shaft, and the other end of the support link is rotatably connected to the fixed shaft. The fixed shaft is fixedly installed on the housing.

3. The relay according to claim 2, characterized in that The relay also includes a mounting bracket, which is disposed on the housing. One end of the fixing shaft is fixedly installed on the mounting bracket, and the other end is fixedly installed on the housing.

4. The relay of claim 2, wherein The support link includes a link body, a first end, and a second end. The first end and the second end are located at both ends of the link body. The first end is rotatably connected to the connecting shaft, and the second end is rotatably connected to the fixed shaft.

5. The relay of claim 1, wherein The support member includes opposing support plates, which form a sliding groove, and the connecting shaft is slidably installed in the sliding groove. In the event of a short circuit, the support plate can support the connecting shaft so that the push card is fixed relative to the connecting shaft.

6. The relay of claim 5, wherein The slide is inclined relative to the extension direction of the moving spring assembly.

7. The relay according to any one of claims 1 to 6, characterized in that The relay further includes a first short-circuit ring, which is disposed on the moving spring assembly; The relay further includes a second short-circuit ring disposed on the stationary spring assembly.

8. The relay according to any one of claims 1 to 6, characterized in that The armature assembly includes an armature component and a swing arm. The armature component is disposed in the housing, and the output end of the armature component is connected to the swing arm. The swing arm is rotatably connected to the connecting shaft.

9. The relay of claim 8, wherein The number of each of the moving spring assembly, the stationary spring assembly, and the self-locking assembly is two sets; Each of the moving spring assemblies is correspondingly provided with each of the stationary spring assemblies. The connecting shafts in the two sets of self-locking assemblies are rotatably connected to both ends of the swing arm, and the push clips in the two sets of self-locking assemblies abut against the corresponding moving spring assemblies.

10. The relay of claim 9, wherein The moving spring assembly includes multiple moving contacts, and the stationary spring assembly includes multiple stationary contacts. The number of stationary contacts is equal to the number of moving contacts, and they are set in a one-to-one correspondence. The armature component drives the swing arm and the connecting shaft to control the push card to push the moving spring assembly to move, so that the multiple moving contacts respectively contact or separate from the multiple sets of stationary contacts.

11. The relay according to any one of claims 1 to 6, characterized in that The push card includes a push body and a connecting end disposed on one side of the push body. The connecting end is rotatably connected to the connecting shaft. The push body abuts against the moving spring assembly. And / or, the moving spring assembly further includes a moving spring sheet and a compression spring, the moving contact is disposed on the moving spring sheet, the compression spring is disposed on the side of the moving spring sheet opposite to the moving contact, the compression spring has a first bending portion and a second bending portion, the first bending portion and the second bending portion are offset along the thickness direction of the push card, and respectively abut against two surfaces of the push card along the thickness direction.

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