Armature reed assembly and vacuum relay

Abstract

The invention discloses an armature reed assembly and a vacuum relay, and belongs to the field of vacuum relays. The armature reed assembly comprises an armature and a connecting support. The connecting bracket comprises a first connecting part and a second connecting part which are connected, and a first bending part is arranged at the joint of the first connecting part and the second connecting part; the armature is provided with a mounting surface, the extension direction of the first connecting part intersects with the mounting surface, the second connecting part comprises a connecting plate and a limiting support which are connected, a second bending part is arranged at the joint of the connecting plate and the limiting support, the connecting piece is fixedly connected to the mounting surface, the limiting support is provided with an avoiding cavity, and at least part of the armature is located in the avoiding cavity. Therefore, through the change of the bending angle of the second bending part, the connecting bracket is deformed, the rigidity of the connecting bracket is reduced, the problem of large operating voltage of the vacuum relay is avoided, the operating voltage of the vacuum relay is reduced, and electric energy is saved.

Description

Technical Field

[0001] The present application belongs to the field of vacuum relays, and specifically relates to an armature reed assembly and a vacuum relay. Background Art

[0002] In the electrical engineering industry, relays are widely used as a control device. They have a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and are usually used in automatic control circuits. Relays are actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, they play the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, the support frame in the vacuum relay is connected to the armature, and the support frame can drive the armature to move. However, in the related art, the convex bump at the tail of the support frame is too rigid and not easy to deform, resulting in a large operating voltage of the vacuum relay. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an armature reed assembly and a vacuum relay, which at least solves the problem that the convex bump at the rear of the support frame is too rigid and not easily deformed, resulting in a large operating voltage of the vacuum relay.

[0005] In a first aspect, an embodiment of the present application provides an armature reed assembly, the armature reed assembly comprising: an armature and a connecting bracket;

[0006] The connecting bracket comprises a first connecting portion and a second connecting portion connected to each other, and a first bending portion is provided at a connection between the first connecting portion and the second connecting portion;

[0007] The armature has a mounting surface, the extension direction of the first connecting part intersects with the mounting surface, the second connecting part includes a connected connecting plate and a limiting bracket, the connection between the connecting plate and the limiting bracket has a second bending portion, the connecting plate is fixedly connected to the mounting surface, the limiting bracket has an avoidance cavity, and at least part of the armature is located in the avoidance cavity.

[0008] Optionally, the limiting bracket includes two limiting arms arranged opposite to each other along the first direction;

[0009] The limiting arm includes a first limiting plate and a second limiting plate connected to each other, one end of the first limiting plate away from the second limiting plate is connected to the connecting plate to form the second bending portion, and a third bending portion is provided at the connection between the first limiting plate and the second limiting plate, wherein the first direction is the width direction of the armature.

[0010] Optionally, the second limiting plate is arranged to be inclined relative to the mounting surface so that a first angle is formed between the first limiting plate and the mounting surface.

[0011] Optionally, the second limiting plate includes a first adapter plate and a second adapter plate;

[0012] The first end of the first adapter plate is connected to the end of the first limiting plate, the second end of the first adapter plate is connected to the second adapter plate, the extension direction of the second adapter plate intersects with the extension direction of the first limiting plate, and the extension direction of the second adapter plate intersects with the plane where the mounting surface is located;

[0013] The first adapter plate includes a convex shoulder structure, and the convex shoulder structure is located at the connection between the second end of the first adapter plate and the second adapter plate;

[0014] The boss structure has a limiting surface, the limiting surface faces the mounting surface, and the limiting surface and the mounting surface are clearance-matched.

[0015] Optionally, the second limiting plate further includes a supporting plate;

[0016] The support plate is connected to the end of the second adapter plate away from the first adapter plate, and a fourth bending portion is provided at the connection between the support plate and the second adapter plate, wherein a plane where the support plate is located intersects with a plane where the second adapter plate is located.

[0017] Optionally, the support plate extends in a direction away from the armature.

[0018] Optionally, the first adapter plate is an arc-shaped plate, and the arc-shaped plate is bent in a direction close to the mounting surface.

[0019] Optionally, the second adapter plates included in the two limiting arms are in relative positions along the first direction;

[0020] The second adapter plate included in one of the limit arms and the first side wall of the armature are gap-matched, and the second adapter plate included in the other limit arm and the second side wall of the armature are gap-matched, wherein the first side wall and the second side wall are two side walls of the armature opposite to each other in the first direction.

[0021] Optionally, the two limit arms are spaced apart along the first direction to form an avoidance groove between the two limit arms.

[0022] In a second aspect, an embodiment of the present application provides a vacuum relay, the vacuum relay comprising an electromagnetic assembly and an armature reed assembly as described in any one of the first aspects above;

[0023] The electromagnetic assembly comprises an electromagnetic coil and a magnetic conductive cylinder, wherein the electromagnetic coil is arranged in the magnetic conductive cylinder;

[0024] The connecting bracket is fixedly connected to the magnetic cylinder. When the electromagnetic assembly is in a power-off state, the surface of the armature facing the magnetic cylinder abuts against the end surface of the magnetic cylinder, and a first preset angle is formed between the surface of the armature facing the magnetic cylinder and the end surface of the magnetic cylinder.

[0025] In the embodiment of the present application, when the armature reed assembly provided in the embodiment of the present application is applied to a vacuum relay, the normally open pressure can be provided by the first bending portion at the connection between the first connection portion and the second connection portion, and the normally closed pressure can be ensured by the second bending portion at the connection between the connecting plate and the limiting bracket. At the same time, during the movement of the armature, the armature applies force to the second connection portion along the extension direction of the first connection portion, thereby changing the angle of the second bending portion. In other words, the connecting bracket can be deformed, and the external force required for the deformation is relatively small. In summary, in the embodiment of the present application, by having a second bending portion at the connection between the connecting plate and the limiting bracket, during the process of the armature driving the connecting bracket to move, the connecting bracket can be deformed by the change in the bending angle of the second bending portion, thereby reducing the rigidity of the connecting bracket, thereby reducing the operating voltage of the vacuum relay, avoiding the problem of a large operating voltage of the vacuum relay, and thereby ensuring that the operating voltage of the vacuum relay is relatively small, saving electric energy.

[0026] In addition, the second bent portion can press against the armature to apply pressure to the armature to ensure the fitting surface between the armature and the magnetic tube, and the bending deformation of the second bent portion provides a restoring force, so that the connecting bracket can be deformed and reset after deformation. At the same time, by adjusting the size of the connecting plate in the first direction and the size of the limiting bracket in the first direction to change the flexibility of the second bent portion, the force value can be controlled, so that the design requirements of the normally closed pressure can be met.

[0027] In addition, since the limit arm includes a first limit plate and a second limit plate that are connected, and the connection between the first limit plate and the second limit plate has a third bending portion, a downward holding force can be applied to the armature through the third bending portion, so that the pivot point of the armature is always in contact with the magnetic tube, thereby ensuring the magnetic conductivity of the magnetic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram showing the structure of an armature reed assembly provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram showing the structure of a connecting bracket included in an armature reed assembly provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram showing a cross-sectional structure of a connecting bracket included in an armature reed assembly provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram showing the structure of an armature included in an armature reed assembly provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram showing a vacuum relay provided in an embodiment of the present application;

[0034] Figure 6 One of the cross-sectional views of a vacuum relay provided in an embodiment of the present application is shown;

[0035] Figure 7 The second cross-sectional view shows a vacuum relay provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 001: normally closed contact; 002: normally open contact; 1: armature; 11: mounting surface; 12: supporting surface; 2: connecting bracket; 21: first connecting part; 210: first bending part; 22: second connecting part; 23: connecting plate; 24: limiting bracket; 25: second bending part; 26: limiting arm; 27: first limiting plate; 28: second limiting plate; 280: third bending part; 281: first adapter plate; 282: second adapter plate; 283: shoulder structure; 284: supporting plate; 285: fourth bending part; 286: avoidance slot; 100: electromagnetic assembly; 110: magnetic tube; 120: electromagnetic coil; 200: housing; 300: transmission rod; Y: first direction; Z: second direction. DETAILED DESCRIPTION

[0038] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] like Figures 1 to 4 As shown, the armature reed assembly includes an armature 1 and a connecting bracket 2 .

[0042] The connecting bracket 2 includes a first connecting portion 21 and a second connecting portion 22 connected to each other. A first bending portion 210 is provided at a connection between the first connecting portion 21 and the second connecting portion 22 .

[0043] The armature 1 has a mounting surface 11, a first connecting portion 21 intersecting with the mounting surface 11, a second connecting portion 22 including a connected connecting plate 23 and a limiting bracket 24, a second bending portion 25 at the connection between the connecting plate 23 and the limiting bracket 24, the connecting plate 23 is fixedly connected to the mounting surface 11, and the limiting bracket 24 has an avoidance cavity, and at least part of the armature is located in the avoidance cavity.

[0044] In the embodiment of the present application, since the connecting bracket 2 includes a first connecting portion 21 and a second connecting portion 22 connected to each other, and the connection between the first connecting portion 21 and the second connecting portion 22 has a first bending portion 210, when the armature reed assembly provided in the embodiment of the present application is applied to a vacuum relay, the first connecting portion 21 can be connected to the transmission rod of the vacuum relay, and the armature 1 can be abutted against the electromagnetic component 100 of the vacuum relay, so that when the electromagnetic component 100 is energized, the electromagnetic component 100 generates magnetism so that the armature 1 rotates, and the armature 1 can drive the connecting bracket 2 to move, so that the first connecting portion 21 and the second connecting portion 22 included in the connecting bracket 2 drive the transmission rod to move, so that the normally open contact 002 of the vacuum relay is closed, and a normally open pressure is provided for the normally open contact 002, wherein the first bending portion 210 provides pressure for the normally open contact 002, and the increase or decrease of the pressure force value of the normally open contact 002 can be achieved by adjusting the width, thickness, bending angle, etc. of the first bending portion 210. Since the first connecting portion 21 and the mounting surface 11 intersect, the second connecting portion 22 includes a connected connecting plate 23 and a limiting bracket 24, and the connection between the connecting plate 23 and the limiting bracket 24 has a second bending portion 25. Therefore, during the movement of the armature 1, the armature 1 applies force to the second connecting portion 22 along the extension direction of the first connecting portion 21, thereby changing the angle of the second bending portion 25 formed at the connection between the first connecting portion 21 and the second connecting portion 22. In other words, the normally closed pressure is provided by the second bending portion 25, and at the same time, the connecting bracket 2 can be deformed, and the external force required for the deformation is relatively small. To summarize, in the embodiment of the present application, the normally-open pressure can be provided by the first bending portion 210 at the connection between the first connecting portion 21 and the second connecting portion 22, and the normally-closed pressure can be ensured by the second bending portion 25 at the connection between the connecting plate 23 and the limiting bracket 24. At the same time, in the process of the armature 1 driving the connecting bracket 2 to move, the bending angle of the second bending portion 25 can be changed to cause the connecting bracket 2 to deform, thereby reducing the stiffness of the connecting bracket 2, thereby reducing the operating voltage of the vacuum relay, avoiding the problem of high operating voltage of the vacuum relay, and ensuring that the operating voltage of the vacuum relay is small, saving electric energy.

[0045] In the related art, the bracket body includes a connecting bracket, a U-shaped bending structure is provided in the middle of the connecting bracket, a connecting convex bulge is provided at the tail of the connecting bracket, the U-shaped bending structure is connected to the connecting convex bulge, the connecting convex bulge is used to abut against the armature 1, and a mounting hole is provided on the connecting bracket, and the connecting bracket is installed on the armature 1 through the mounting hole. During the process of powering on and off of the electromagnetic assembly 100 in the vacuum relay, the connecting convex bulge needs to abut against the armature 1 and apply force to the armature 1, but the connecting convex bulge has high rigidity and is not easy to deform, resulting in a large pressure applied by the convex bulge to the armature 1, and then a large pressure on the normally closed contact 001, resulting in a large voltage for powering on the electromagnetic assembly 100 to provide a larger action voltage.

[0046] Based on the above problems, in the embodiment of the present application, by setting the connecting bracket 2 as an integrated structure, a second bending portion 25 is provided in the second connecting portion 22 included in the connecting bracket 2, that is, the connecting plate 23 and the mounting surface 11 of the armature 1 are installed, so that the limiting bracket 24 limits the rest of the armature 1. During the movement of the armature 1, since the connection between the connecting plate 23 and the limiting bracket 24 has the second bending portion 25, the second bending portion 25 can be used to achieve the deformation of the connecting bracket 2 to solve the above problems. It should be noted that the first connecting portion 21 and the second connecting portion 22 are both frame-shaped structures or plate-shaped bending structures composed of multiple plate-like structures, and the connecting plate 23 included in the second connecting portion 22 can be connected to the mounting surface 11 of the armature 1 by riveting, threading, clamping or welding, etc., and the embodiment of the present application does not limit this. During installation, the connecting plate 23 needs to be fixed on the mounting surface 11, so that the connecting plate 23 can be displaced with the movement of the armature 1, and in the process of displacement, the bending angle of the second bending portion 25 changes. In addition, the limiting bracket 24 can be a frame-shaped structure, which can at least partially cover the portion of the armature 1 away from the first connecting portion 21, so as to apply force to the armature 1.

[0047] Regarding the structure of the above-mentioned limit bracket 24, in some embodiments, the limit bracket 24 includes two limit arms 26 arranged relatively along the first direction, the limit arms 26 include a first limit plate 27 and a second limit plate 28 connected to each other, the end of the first limit plate 27 away from the second limit plate 28 is connected to the connecting plate 23 to form a second bending portion 25, the connection between the first limit plate 27 and the second limit plate 28 has a third bending portion 280, and the first limit plate 27 is inclined relative to the mounting surface 11, and the first direction is the width direction of the armature 1.

[0048] In this embodiment, since the limit arm 26 includes a first limit plate 27 and a second limit plate 28 that are connected, and the connection between the first limit plate 27 and the second limit plate 28 has a third bending portion 280, the deformation force generated by the bending deformation of the third bending portion 280 can provide a downward holding force to the armature 1, so that the rotation axis point of the armature 1 is always in contact with the magnetic tube 110, thereby ensuring the magnetic conductivity between the magnetic tube 110 and the armature 1.

[0049] It should be noted that the first direction in the embodiment of the present application can be as follows: Figure 2 The direction indicated by Y in the figure is generally used when the armature 1 is a square block structure, the second connection portion 22 extends in the length direction of the armature 1, and the first direction is the width direction of the armature 1. It can also be understood that the first direction and the extension direction of the second connection portion 22 intersect.

[0050] In addition, in some embodiments, the first limiting plate 27 is tilted relative to the mounting surface 11 so that a first angle is formed between the first limiting plate 27 and the mounting surface 11 .

[0051] In this embodiment, since the first limit plate 27 is inclined relative to the mounting surface 11 so that there is a first angle between the first limit plate 27 and the mounting surface 11, there is a cavity between the first limit plate 27 and the mounting surface 11 of the armature 1. Therefore, the cavity between the first limit plate 27 and the mounting surface 11 of the armature 1 can provide space for the deformation between the first limit plate 27 and the second limit plate 28. The larger deformation between the first limit plate 27 and the second limit plate 28 provides greater pressure on the armature 1, further ensuring that the contact portion between the armature and the magnetic tube 110 is always in contact. It should be noted that the first limit plate 27 is inclined relative to the mounting surface 11 of the armature 1. It can be understood that the end of the first limit plate 27 away from the second limit plate 28 extends in the direction away from the mounting surface 11 of the armature 1, so that the first limit plate 27 is warped. In this way, the deformation force generated by the bending deformation of the third bending portion 280 can provide a downward holding force to the armature 1, so that the pivot point of the armature 1 is always in contact with the magnetic tube 110, thereby ensuring the magnetic conductivity between the magnetic tube 110 and the armature 1.

[0052] In addition, in some embodiments, the second limit plate 28 includes a first adapter plate 281 and a second adapter plate 282, the first end of the first adapter plate 281 is connected to the end of the first limit plate 27, the second end of the first adapter plate 281 is connected to the second adapter plate 282, the extension direction of the second adapter plate 282 intersects with the extension direction of the first limit plate 27, and the extension direction of the second adapter plate 282 intersects with the plane where the mounting surface 11 is located. The first adapter plate 281 includes a convex shoulder structure 283, the convex shoulder structure 283 is located at the connection between the second end of the first adapter plate 281 and the second adapter plate 282, the convex shoulder structure 283 has a limit surface, the limit surface faces the mounting surface 11, and the limit surface and the mounting surface 1 are clearance-matched.

[0053] In this embodiment, since the second limiting plate 28 includes a first adapter plate 281 and a second adapter plate 282, the first end of the first adapter plate 281 is connected to the end of the first limiting plate 27, the second end of the first adapter plate 281 is connected to the second adapter plate 282, the extension direction of the second adapter plate 282 intersects with the extension direction of the first limiting plate 27, and the extension direction of the second adapter plate 282 intersects with the plane where the mounting surface 11 is located, the first limiting plate 27 and the second adapter plate 282 can be connected through the first adapter plate 281, thereby facilitating the formation of other limiting structures at the first adapter plate 281 to limit and position the armature 1. Furthermore, since the first adapter plate 281 includes a boss structure 283, the boss structure 283 is located at the connection between the second end of the first adapter plate 281 and the second adapter plate 282, and the boss structure 283 has a limiting surface, the limiting surface faces the mounting surface 11, and the limiting surface and the mounting surface 1 are clearance-matched, the mounting surface 11 can be always limited by the boss structure 283, and the displacement of the armature 1 in a direction perpendicular to the mounting surface 11 is limited by the boss structure 283, and the upward warping distance of the armature 1 is further limited by the boss structure 283, which can avoid large displacement of the armature 1 under external environmental vibration and impact, and further improve the stability of the armature spring assembly during vibration and impact. Among them, the direction perpendicular to the mounting surface 11 can be the second direction, and the second direction is such as Figure 2 The direction shown by Z in .

[0054] It should be noted that, in the above embodiment, the boss structure 283 can be understood as a cross-sectional structure formed at the connection between the second end of the first adapter plate 281 and the second adapter plate 282. In other words, if the size of the second end of the first adapter plate 281 in the first direction is larger than the size of the second adapter plate 282 in the first direction, a cross-sectional structure extending along the first direction can be formed at the connection between the second end of the first adapter plate 281 and the second adapter plate 282, and the cross-sectional structure is the boss structure 283.

[0055] It should also be noted that when the armature reed assembly is used in different types of vacuum relays, the types of vacuum relays are different, and the pressure provided by the connection bracket 2 when the vacuum relay is normally open is different, and the pressure provided by the connection bracket 2 when the vacuum relay is normally closed is different. Based on this, since the third bending portion 280 at the connection between the first limit plate 27 and the second limit plate 28 is the main structure for forming the normally closed bending force, the flexibility of the third bending portion 280 at the connection between the first limit plate 27 and the second limit plate 28 can be changed by adjusting the size of the first adapter plate 281 in the first direction and the size in the second direction, so as to achieve the control of the force value, so as to ensure that the armature 1 rotation axis point and the magnetic tube 110 are always in contact with each other. Similarly, since the second bent portion 25 at the connection between the connecting plate 23 and the limiting bracket 24 is the main structure for providing the normally closed pressure, the flexibility of the second bent portion 25 at the connection between the first limiting plate 27 and the connecting plate 23 can be changed by adjusting the size of the connecting plate 23 in the first direction and the size of the first limiting plate 27 in the first direction, and the force value can also be controlled so that the design requirements of the normally closed pressure can be met. In summary, when the armature reed assembly provided in the embodiment of the present invention is applied to different types of vacuum relays, the design requirements of the pressure of different types of vacuum relays can be met by replacing the connecting brackets 2 of different specifications and sizes, which is conducive to the mass production of vacuum relays.

[0056] It should also be noted that the size of the magnetic gap between the armature 1 and the magnetic tube 110 can be changed by adjusting the position of the second bent portion 25 at the connection between the connecting plate 23 and the limiting bracket 24, that is, the size of the angle between the surface of the armature 1 facing the magnetic tube 110 (i.e., the supporting surface 12) and the top surface of the magnetic tube 110. If it is necessary to increase the magnetic gap between the armature 1 and the magnetic tube 110, that is, to increase the angle between the surface of the armature 1 facing the magnetic tube 110 and the top surface of the magnetic tube 110, the second bent portion is moved in a direction away from the first connecting frame 21, which can be achieved by increasing the size of the connecting plate 23 in the third direction and reducing the size of the limiting bracket 24 in the third direction. If it is necessary to reduce the magnetic gap between the armature 1 and the magnetic tube 110, that is, to reduce the angle between the surface of the armature 1 facing the magnetic tube 110 and the top surface of the magnetic tube 110, the second bent portion is moved toward the direction close to the first connecting frame 21, which can be achieved by reducing the size of the connecting plate 23 in the third direction and increasing the size of the limiting bracket 24 in the third direction. The third direction is the extension direction of the connecting plate, or it can be understood as the direction in which the connecting plate 23 points to the limiting bracket 24.

[0057] In addition, in some embodiments, the second limiting plate 28 also includes a support plate 284, which is connected to the end of the second adapter plate 282 away from the first adapter plate 281, and the connection between the support plate 284 and the second adapter plate 282 has a fourth bending portion 285, wherein the plane where the support plate 284 is located intersects with the plane where the second adapter plate 282 is located.

[0058] Since the support plate 284 is connected to the end of the second adapter plate 282 away from the first adapter plate 281, the connection between the support plate 284 and the second adapter plate 282 has a fourth bending portion 285, wherein the plane where the support plate 284 is located intersects with the plane where the second adapter plate 282 is located. Therefore, after the connecting bracket 2 is applied to the vacuum relay, the vacuum relay has an armature 1 and an electromagnetic assembly 100, and the armature 1 is located on the top wall of one end of the electromagnetic assembly 100. After the connecting bracket 2 is installed on the armature 1, the support plate 284 can be fixedly connected to the top wall of one end of the electromagnetic assembly 100, and the third bending portion 280 formed at the connection between the first limit plate 27 and the second limit plate 28 applies force to the armature 1 under the action of the armature 1, and cooperates with the second bending portion 25, so that after the electromagnetic assembly 100 of the vacuum relay is powered off, the limit bracket 24 can ensure that the armature 1 returns to its initial position.

[0059] Additionally, in some embodiments, the support plate 284 extends in a direction away from the armature 1 .

[0060] In this embodiment, since the support plate 284 extends in the direction away from the armature 1, the pressure applied to the support plate 284 can be transferred to the magnetic tube 110 in the direction away from the armature 1. In addition, the force is mutual, so that the force applied by the support plate 284 to the magnetic tube 110 is increased. At the same time, the welding area between the limit bracket 24 and the magnetic tube 110 can be increased by the support plate 284, thereby increasing the stability between the connecting bracket 2 and the magnetic tube 110.

[0061] In addition, in some embodiments, the first adapter plate 281 is an arc-shaped plate, and the arc-shaped plate is bent toward a direction close to the mounting surface 11 .

[0062] Since the first adapter plate 281 is an arc-shaped plate and the arc-shaped plate is bent toward the mounting surface 11 , the arc-shaped plate can form the third bending portion 280 . In addition, the arc-shaped plate is subjected to a smaller external force when deformed, which is more conducive to the deformation of the third bending portion 280 .

[0063] In addition, in some embodiments, the second adapter plates 282 included in the two limit arms 26 are in relative positions along the first direction, the second adapter plate 282 included in one limit arm 26 and the first side wall of the armature 1 are gap-matched, and the second adapter plate 282 included in the other limit arm 26 and the second side wall of the armature 1 are gap-matched, wherein the first side wall and the second side wall are two opposite side walls of the armature 1 in the first direction.

[0064] In this embodiment, since the second adapter plate 282 included in one limit arm 26 and the first side wall clearance of the armature 1 are matched, the second adapter plate 282 included in the other limit arm 26 and the second side wall clearance of the armature 1 are matched, the armature 1 is limited between the two second adapter plates 282 included in the two limit arms 26, so that the relative position of the armature 1 in the first direction is limited by the two limit arms 26, further improving the stability of the armature spring assembly during vibration impact.

[0065] In addition, in some embodiments, the two limiting arms 26 are spaced apart along the first direction to form an avoidance slot 286 between the two limiting arms 26 .

[0066] Since the two limit arms 26 are spaced apart along the first direction to form an avoidance groove 286 between the two limit arms 26, the two limit arms 26 can be deformed independently through the avoidance groove 286, thereby reducing the deformation difficulty of the second bending portion 25 at the connection between the connecting plate 23 and the limit bracket 24, and improving the overall flexibility of the connecting bracket 2.

[0067] In addition, it should be noted that since the connecting bracket 2 included in the embodiment of the present application is an integral structure, and the position of the armature 1 is directly limited by the structure of the limiting bracket 24, the armature 1 can be adapted to the connecting bracket 2 without any structural adjustment, which not only reduces the installation difficulty between the armature 1 and the connecting bracket 2, but also reduces the preparation cost of the armature 1, which is conducive to the mass production of the armature spring assembly.

[0068] In summary, the embodiments of the present application have at least the following beneficial effects:

[0069] 1. The first bending portion 210 can provide pressure to the normally open contact 002 , and the increase or decrease of the pressure value of the normally open contact 002 can be achieved by adjusting the width, thickness, bending angle, etc. of the first bending portion 210 .

[0070] 2. The normally closed pressure is provided by the second bending portion 25, and at the same time the connecting bracket 2 can be deformed, and the external force required for the deformation is relatively small, thereby reducing the operating voltage of the vacuum relay.

[0071] 3. The second bent portion 25 can press against the armature 1 and apply pressure to the armature 1 to ensure the fitting surface between the armature 1 and the magnetic tube 110 .

[0072] 4. The deformation force generated by the bending deformation of the third bending portion 280 provides a downward holding force to the armature 1, so that the rotation axis of the armature 1 and the magnetic tube 110 are always in contact with each other, thereby ensuring the magnetic conductivity between the magnetic tube 110 and the armature 1.

[0073] 5. Adjust the size of the first limit plate 27 in the first direction to change the flexibility of the second bent portion 25 at the connection between the first limit plate 27 and the connecting plate 23 to achieve force control, so as to meet the design requirements of the normally closed pressure.

[0074] 6. The size of the magnetic gap between the armature 1 and the magnetic conductive cylinder 110 can be changed by adjusting the position of the second bent portion 25 at the connection between the connecting plate 23 and the limiting bracket 24 .

[0075] The present application also provides a vacuum relay, such as Figures 5 to 7 As shown, the vacuum relay includes an electromagnetic assembly 100 and an armature reed assembly in any of the above embodiments; the armature 1 abuts against the electromagnetic assembly 100 .

[0076] The electromagnetic assembly 100 includes an electromagnetic coil 120 and a magnetic conductive cylinder 110, wherein the electromagnetic coil 120 is disposed in the magnetic conductive cylinder 100;

[0077] The connecting bracket 2 and the magnetic tube 110 are fixedly connected. When the electromagnetic assembly 100 is in a power-off state, the surface of the armature 1 facing the magnetic tube 110 abuts against the end surface of the magnetic tube 110, and there is a first preset angle between the surface of the armature 1 facing the magnetic tube 110 and the end surface of the magnetic tube 100.

[0078] In the embodiment of the present application, since the connecting bracket 2 includes a first connecting portion 21 and a second connecting portion 22 connected to each other, and the connection between the first connecting portion 21 and the second connecting portion 22 has a first bending portion 210, when the armature reed assembly provided in the embodiment of the present application is applied to a vacuum relay, the first connecting portion 21 can be connected to the transmission rod of the vacuum relay, and the armature 1 can be abutted against the electromagnetic component 100 of the vacuum relay, so that when the electromagnetic component 100 is energized, the electromagnetic component 100 generates magnetism so that the armature 1 rotates, and the armature 1 can drive the connecting bracket 2 to move, so that the connecting bracket 2 drives the first connecting portion 21 and the second connecting portion 22 to move, so that the first connecting portion 21 and the second connecting portion 22 drive the transmission rod to move, so that the normally open contact 002 of the vacuum relay is closed, and a normally open pressure is provided for the normally open contact 002, wherein the first bending portion 210 provides pressure for the normally open contact 002, and the increase or decrease of the pressure force value of the normally open contact 002 can be achieved by adjusting the width, thickness, bending angle, etc. of the first bending portion 210. Since the first connection part 21 intersects with the mounting surface 11, the second connection part 22 includes a connected connection plate 23 and a limit bracket 24, and the connection between the connection plate 23 and the limit bracket 24 has a second bending portion 25. Therefore, during the movement of the armature 1, the armature 1 applies force to the second connection part 22 along the extension direction of the first connection part 21, thereby changing the angle of the second bending portion 25 formed at the connection between the first connection part 21 and the second connection part 22. In other words, the second bending portion 25 provides a normally closed pressure, and at the same time, the connection bracket 2 can be deformed, and the external force required for the deformation is small. In the above process, the limit bracket 24 is connected to the top wall of the magnetic tube 110 to achieve the positioning of the overall structure of the armature spring assembly. To summarize, in the embodiment of the present application, the normally-open pressure can be provided by the first bending portion 210 at the connection between the first connecting portion 21 and the second connecting portion 22, and the normally-closed pressure can be ensured by the second bending portion 25 at the connection between the connecting plate 23 and the limiting bracket 24. At the same time, in the process of the armature 1 driving the connecting bracket 2 to move, the bending angle of the second bending portion 25 can be changed to cause the connecting bracket 2 to deform, thereby reducing the stiffness of the connecting bracket 2, thereby reducing the operating voltage of the vacuum relay, avoiding the problem of high operating voltage of the vacuum relay, and ensuring that the operating voltage of the vacuum relay is small, saving electric energy.

[0079] It should be noted that the vacuum relay in the above embodiments may include an electromagnetic assembly 100 and an armature reed assembly in any of the above embodiments, the armature reed assembly includes a connecting bracket 2; the electromagnetic assembly 100 includes a magnetic tube 110 and an electromagnetic coil 120, the electromagnetic coil 120 is arranged in the magnetic tube 110, the armature 1 is arranged on the top wall of one end of the magnetic tube 110, and the support plate 284 included in the limit bracket 24 is welded on the top wall of the magnetic tube.

[0080] The vacuum relay may further include a housing 200, the normally open contact 002 and the normally closed contact 001 may be arranged in the housing 200, and the transmission rod may be arranged in the housing 200. A connecting bracket 2 may be arranged on the mounting surface 11 of the armature 1, the connecting bracket 2 is mounted on the mounting surface 11, and the connecting bracket 2 is connected to the transmission rod. Specifically in the embodiment of the present application, the component connected to the transmission rod is the first connection part 21. When the electromagnetic coil 120 is energized, the electromagnetic coil 120 generates magnetism, thereby causing the armature 1 to move. The armature 1 faces the surface of the magnetic tube 110 (that is, the end of the armature 1 close to the first connection part 21) and abuts against the top wall of one end of the magnetic tube 110. At the same time, the transmission rod moves to the normally open contact 002, so that the vacuum relay is in a normally open state. As the position of the armature 1 changes, the armature 1 applies force to the clamping piece. When the electromagnetic coil 120 is de-energized, the armature 1 is reset under the action of the limit bracket 24. During the resetting process, the end of the armature 1 away from the first connection part 21 serves as a rotating shaft and is always abutted against the top wall of the other end of the magnetic tube 110. The transmission rod moves to the normally closed contact 001, so that the vacuum relay is in a normally closed state. The support surface 12 and the mounting surface 11 of the armature 1 are two surfaces of the armature 1 that are opposite to each other in a direction perpendicular to the mounting surface 11, and the support surface 12 of the armature 1 is the surface facing the magnetic guide tube 110. When the vacuum relay is in the normally closed state, there is an angle between the support surface 12 of the armature and the end surface of the magnetic guide tube 110.

[0081] It should be noted that the normally open pressure in the embodiment of the present application is the pressure that can close the normally open contact 002 and maintain the contact closed state, and the normally closed pressure in the embodiment of the present application is the pressure that can close the normally closed contact 001 and maintain the contact closed state.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An armature spring assembly, characterized in that: The armature reed assembly comprises: an armature and a connecting bracket; The connecting bracket comprises a first connecting portion and a second connecting portion connected to each other, and a first bending portion is provided at a connection between the first connecting portion and the second connecting portion; The armature has a mounting surface, the extension direction of the first connecting part intersects with the mounting surface, the second connecting part includes a connected connecting plate and a limiting bracket, the connection between the connecting plate and the limiting bracket has a second bending portion, the connecting plate is fixedly connected to the mounting surface, the limiting bracket has an avoidance cavity, and at least part of the armature is located in the avoidance cavity.

2. The armature reed assembly according to claim 1, characterized in that: The limiting bracket includes two limiting arms arranged opposite to each other along a first direction; The limiting arm includes a first limiting plate and a second limiting plate connected to each other, one end of the first limiting plate away from the second limiting plate is connected to the connecting plate to form the second bending portion, and a third bending portion is provided at the connection between the first limiting plate and the second limiting plate, wherein the first direction is the width direction of the armature.

3. The armature reed assembly according to claim 2, characterized in that: The first limiting plate is arranged to be inclined relative to the mounting surface, so that a first angle is formed between the first limiting plate and the mounting surface.

4. The armature reed assembly according to claim 2, characterized in that: The second limiting plate includes a first adapter plate and a second adapter plate; The first end of the first adapter plate is connected to the end of the first limiting plate, the second end of the first adapter plate is connected to the second adapter plate, the extension direction of the second adapter plate intersects with the extension direction of the first limiting plate, and the extension direction of the second adapter plate intersects with the plane where the mounting surface is located; The first adapter plate includes a convex shoulder structure, and the convex shoulder structure is located at the connection between the second end of the first adapter plate and the second adapter plate; The boss structure has a limiting surface, the limiting surface faces the mounting surface, and the limiting surface and the mounting surface are clearance-matched.

5. The armature reed assembly according to claim 4, characterized in that: The second limiting plate also includes a supporting plate; The support plate is connected to the end of the second adapter plate away from the first adapter plate, and a fourth bending portion is provided at the connection between the support plate and the second adapter plate, wherein a plane where the support plate is located intersects with a plane where the second adapter plate is located.

6. The armature reed assembly according to claim 5, characterized in that: The support plate extends in a direction away from the armature.

7. The armature reed assembly according to claim 4, characterized in that: The first adapter plate is an arc-shaped plate, and the arc-shaped plate is bent toward a direction close to the mounting surface.

8. The armature reed assembly according to claim 4, characterized in that: The second adapter plates included in the two limiting arms are in relative positions along the first direction; The second adapter plate included in one of the limit arms and the first side wall of the armature are gap-matched, and the second adapter plate included in the other limit arm and the second side wall of the armature are gap-matched, wherein the first side wall and the second side wall are two side walls of the armature opposite to each other in the first direction.

9. The armature reed assembly according to claim 2, characterized in that: The two limit arms are spaced apart along the first direction to form an avoidance slot between the two limit arms.

10. A vacuum relay, characterized in that: The vacuum relay comprises an electromagnetic assembly and an armature reed assembly as claimed in any one of claims 1 to 9; The electromagnetic assembly comprises an electromagnetic coil and a magnetic conductive cylinder, wherein the electromagnetic coil is arranged in the magnetic conductive cylinder; The connecting bracket is fixedly connected to the magnetic cylinder. When the electromagnetic assembly is in a power-off state, the surface of the armature facing the magnetic cylinder abuts against the end surface of the magnetic cylinder, and a first preset angle is formed between the surface of the armature facing the magnetic cylinder and the end surface of the magnetic cylinder.

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