Armature reed assembly and vacuum relay

Abstract

The utility model 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 application belongs to the field of vacuum relays, and particularly relates to an armature spring plate assembly and a vacuum relay. BACKGROUND

[0002] In the electrical engineering industry, a relay is widely used as a control device, which has a control system (also referred to as an input loop) and a controlled system (also referred to as an output loop), and is usually applied to an automatic control circuit. The relay is actually an automatic switch for controlling a larger current with a smaller current. Therefore, the relay plays a role in automatic regulation, safety protection, and conversion of a circuit.

[0003] In the related art, a support frame in a vacuum relay is connected with an armature, and the support frame can drive the armature to move. However, in the related art, the convexity at the tail of the support frame is too rigid and is not easy to deform, which causes a large operating voltage of the vacuum relay. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the application is to provide an armature spring plate assembly and a vacuum relay, which at least solve the problem that the convexity at the tail of the support frame is too rigid and is not easy to deform, which causes a large operating voltage of the vacuum relay.

[0005] In a first aspect, the embodiments of the application provide an armature spring plate assembly, which comprises an armature and a connecting bracket.

[0006] The connecting bracket comprises a first connecting part and a second connecting part connected with each other, and a first bending part is arranged at a connection position between the first connecting part and the second connecting part.

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

[0008] Optionally, the limiting bracket comprises two limiting arms oppositely arranged along a first direction.

[0009] The limiting arms comprise a first limiting plate and a second limiting plate connected with each other, one end of the first limiting plate away from the second limiting plate is connected with the connecting plate to form the second bending part, a third bending part is arranged at a connection position between the first limiting plate and the second limiting plate, and the first direction is a width direction of the armature.

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

[0011] Optionally, the second limiting plate comprises 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 on which the mounting surface lies.

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

[0014] The shoulder structure has a limiting surface, the limiting surface faces the mounting surface, and the limiting surface and the mounting surface are in clearance fit.

[0015] Optionally, the second limiting plate further comprises a support plate.

[0016] The support plate is connected to the end of the second adapter plate away from the first adapter plate, and the connection between the support plate and the second adapter plate has a fourth bending portion, wherein the plane on which the support plate lies intersects with the plane on which the second adapter plate lies.

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

[0018] Optionally, the first adapter plate is an arc-shaped plate, and the arc-shaped plate is bent towards the mounting surface.

[0019] Optionally, the second adapter plates included by the two limiting arms are in opposite positions along the first direction.

[0020] The second adapter plate included by one limiting arm is in clearance fit with the first side wall of the armature, and the second adapter plate included by the other limiting arm is in clearance fit with the second side wall of the armature, wherein the first side wall and the second side wall are two side walls of the armature opposite in the first direction.

[0021] Optionally, the two limiting arms are arranged at intervals along the first direction to form an avoiding through slot between the two limiting arms.

[0022] In a second aspect, the embodiments of the present application provide a vacuum relay, the vacuum relay comprising an electromagnetic assembly and the armature spring plate assembly of any one of the first aspect.

[0023] The electromagnetic assembly comprises an electromagnetic coil and a magnetic conducting cylinder, and the electromagnetic coil is arranged in the magnetic conducting cylinder.

[0024] The connecting support and the magnetic conducting cylinder are fixedly connected, and when the electromagnetic assembly is in a power-off state, the armature abuts against the surface of the magnetic conducting cylinder and the end surface of the magnetic conducting cylinder, and the armature has a first preset included angle between the surface of the magnetic conducting cylinder and the end surface of the magnetic conducting cylinder.

[0025] In the application, when the armature spring assembly is applied to the vacuum relay, the first bending part between the first connecting part and the second connecting part can provide the normally open pressure, the second bending part between the connecting plate and the limiting support can guarantee the normally closed pressure, and in the process of movement of the armature, the armature exerts force on the second connecting part along the extension direction of the first connecting part, so that the angle of the second bending part is changed, in other words, the connecting support can be deformed, and the external force required for deformation is small. In the application, the second bending part between the connecting plate and the limiting support can change the bending angle of the second bending part in the process of movement of the armature driven by the connecting support, so that the connecting support is deformed, the rigidity of the connecting support is reduced, the operating voltage of the vacuum relay is reduced, the problem of large operating voltage of the vacuum relay is avoided, and the operating voltage of the vacuum relay is ensured to be small, thereby saving electric energy.

[0026] In addition, the second bending part can press against the armature to exert pressure on the armature, guarantee the fitting surface between the armature and the magnetic conducting cylinder, and provide the restoring force through the bending deformation of the second bending part, so that the connecting support can be reset after deformation. At the same time, the size of the connecting plate in the first direction and the size of the limiting support in the first direction are adjusted to change the flexibility of the second bending part, realize the control of the force value, and meet the design requirements of the normally closed pressure.

[0027] In addition, since the limiting arm comprises the first limiting plate and the second limiting plate connected to each other, and the third bending part is arranged at the connection between the first limiting plate and the second limiting plate, the third bending part can exert downward holding force on the armature, so that the pivot point of the armature is always fitted with the magnetic conducting cylinder, thereby guaranteeing the magnetic conducting performance of the magnetic conducting cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0029] Figure 1 Figure 1 shows a structural schematic diagram of a armature spring assembly according to an embodiment of the present application;

[0030] Figure 2 Figure 2 shows a structural schematic diagram of a connecting bracket included in an armature spring assembly according to an embodiment of the present application;

[0031] Figure 3 Figure 3 shows a cross-sectional structural schematic diagram of a connecting bracket included in an armature spring assembly according to an embodiment of the present application;

[0032] Figure 4 Figure 4 shows a structural schematic diagram of an armature included in an armature spring assembly according to an embodiment of the present application;

[0033] Figure 5 Figure 5 shows a schematic diagram of a vacuum relay according to an embodiment of the present application;

[0034] Figure 6 Figure 6 shows a cross-sectional view of a vacuum relay according to an embodiment of the present application;

[0035] Figure 7 Figure 7 shows another cross-sectional view of a vacuum relay according to an embodiment of the present application.

[0036] Reference signs:

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

[0038] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is 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 front and rear associated objects are in an "or" relationship.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

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

[0042] The connecting bracket 2 includes a first connecting part 21 and a second connecting part 22 connected together, and the connection between the first connecting part 21 and the second connecting part 22 has a first bending part 210.

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

[0044] In this embodiment, since the connecting bracket 2 includes a first connecting part 21 and a second connecting part 22 connected together, and the connection between the first connecting part 21 and the second connecting part 22 has a first bent part 210, when the armature spring assembly provided in this embodiment is applied to a vacuum relay, the first connecting part 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. When the electromagnetic component 100 is energized, the electromagnetic component 100 generates magnetism, thereby causing the armature 1 to rotate. The armature 1 can then drive the connecting bracket 2 to move, causing the first connecting part 21 and the second connecting part 22 of the connecting bracket 2 to drive the transmission rod to move, thereby closing the normally open contact 002 of the vacuum relay and providing normally open pressure to the normally open contact 002. The first bent part 210 provides pressure to the normally open contact 002. The increase or decrease of the pressure value of the normally open contact 002 can be achieved by adjusting the width, thickness, and bending angle of the first bent part 210. Since the first connecting part 21 intersects with the mounting surface 11, the second connecting part 22 includes a connected connecting plate 23 and a limiting bracket 24. The connection between the connecting plate 23 and the limiting bracket 24 has a second bend 25. Therefore, during the movement of the armature 1, the armature 1 applies force to the second connecting part 22 along the extension direction of the first connecting part 21, thereby changing the angle of the second bend 25 formed at the connection between the first connecting part 21 and the second connecting part 22. In other words, the second bend 25 provides normally closed pressure, while allowing the connecting bracket 2 to deform, and the external force required for deformation is small. In summary, in this embodiment, the normally open pressure can be provided by the first bend 210 at the connection between the first connecting part 21 and the second connecting part 22, and the normally closed pressure can be ensured by the second bend 25 at the connection between the connecting plate 23 and the limiting bracket 24. At the same time, during the movement of the connecting bracket 2 driven by the armature 1, the connecting bracket 2 can be deformed by the change of the bending angle of the second bend 25, thereby reducing the rigidity of the connecting bracket 2 and thus reducing the operating voltage of the vacuum relay. This avoids the problem of high operating voltage of the vacuum relay, thereby ensuring that the operating voltage of the vacuum relay is small and saving energy.

[0045] In related technologies, the main body of the bracket includes a connecting bracket, a U-shaped bending structure in the middle of the connecting bracket, and a connecting protrusion at the tail of the connecting bracket. The U-shaped bending structure connects with the connecting protrusion, which abuts against the armature 1. The connecting bracket has mounting holes, and the connecting bracket is mounted on the armature 1 through the mounting holes. During the energization and de-energization of the electromagnetic component 100 in the vacuum relay, the connecting protrusion needs to abut against the armature 1 and exert force on the armature 1. However, the connecting protrusion has high rigidity and is not easily deformed, resulting in a large pressure exerted by the protrusion on the armature 1. Consequently, the normally closed contact 001 has a large pressure, resulting in a larger energizing voltage for the electromagnetic component 100 to provide a larger operating voltage.

[0046] Based on the above problems, in this embodiment, the connecting bracket 2 is configured as an integral structure, and a second bending portion 25 is provided in the second connecting portion 22 of 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 remaining part 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 connecting bracket 2 can be deformed by the second bending portion 25 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-shaped structures. 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, threaded connection, snap-fit ​​or welding, etc., and this embodiment 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. During the displacement, the bending angle of the second bending portion 25 changes. In addition, the limiting bracket 24 can be a frame structure, which can at least partially cover the part of the armature 1 away from the first connecting portion 21 so that force can be applied to the armature 1.

[0047] In some embodiments of the structure of the limiting bracket 24, the limiting bracket 24 includes two limiting arms 26 arranged opposite to each other along a first direction. Each limiting arm 26 includes a first limiting plate 27 and a second limiting plate 28 connected together. The end of the first limiting plate 27 away from the second limiting plate 28 is connected to the connecting plate 23 to form a second bending portion 25. The connection between the first limiting plate 27 and the second limiting plate 28 has a third bending portion 280. The first limiting plate 27 is inclined relative to the mounting surface 11. The first direction is the width direction of the armature 1.

[0048] In this embodiment, since the limiting arm 26 includes a first limiting plate 27 and a second limiting plate 28 connected together, and the connection between the first limiting plate 27 and the second limiting 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 pivot point of the armature 1 is always in contact with the magnetic cylinder 110, thereby ensuring the magnetic conductivity between the magnetic cylinder 110 and the armature 1.

[0049] It should be noted that the first direction in the embodiments of this application can be as follows: Figure 2 The direction indicated by Y in the diagram. Typically, the armature 1 is a square block structure, and the second connecting part 22 extends along the length direction of the armature 1. The first direction is the width direction of the armature 1, which can also be understood as the first direction intersecting the extension direction of the second connecting part 22.

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

[0051] In this embodiment, since the first limiting plate 27 is inclined relative to the mounting surface 11, so that there is a first included angle between the first limiting plate 27 and the mounting surface 11, there is a cavity between the first limiting plate 27 and the mounting surface 11 of the armature 1. Therefore, the cavity between the first limiting plate 27 and the mounting surface 11 of the armature 1 can provide space for the deformation between the first limiting plate 27 and the second limiting plate 28. The larger deformation between the first limiting plate 27 and the second limiting plate 28 provides greater pressure to the armature 1, further ensuring that the contact part between the armature and the magnetic cylinder 110 is always in contact. It should be noted that the first limiting plate 27 is inclined relative to the mounting surface 11 of the armature 1. This can be understood as the end of the first limiting plate 27 away from the second limiting plate 28 extending in the direction away from the mounting surface 11 of the armature 1, causing the first limiting plate 27 to tilt upwards. In this way, the deformation force generated by the bending deformation of the third bending part 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 cylinder 110, thereby ensuring the magnetic conductivity between the magnetic cylinder 110 and the armature 1.

[0052] In some embodiments, 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, and the second end of the first adapter plate 281 is connected to the second adapter plate 282. The extending direction of the second adapter plate 282 intersects the extending direction of the first limiting plate 27, and the extending direction of the second adapter plate 282 intersects the plane containing the mounting surface 11. The first adapter plate 281 includes a shoulder structure 283 located at the connection between the second end of the first adapter plate 281 and the second adapter plate 282. The shoulder structure 283 has a limiting surface facing the mounting surface 11, and there is a clearance fit between the limiting surface and the mounting surface 11.

[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 the extension direction of the first limiting plate 27, and the extension direction of the second adapter plate 282 intersects the plane where the mounting surface 11 is located. Therefore, 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 shoulder structure 283, which is located at the second end of the first adapter plate 281 and the connection point of the second adapter plate 282, the shoulder structure 283 has a limiting surface facing the mounting surface 11, and the limiting surface and the mounting surface 11 are in clearance fit. Therefore, the shoulder structure 283 can always limit the mounting surface 11, restricting the displacement of the armature 1 in the direction perpendicular to the mounting surface 11. This, in turn, limits the upward tilting distance of the armature 1, preventing significant displacement of the armature 1 under external vibration and impact, and further improving the stability of the armature spring assembly during vibration and impact. The direction perpendicular to the mounting surface 11 can be a second direction, such as... Figure 2 The direction indicated by Z in the diagram.

[0054] It should be noted that, in the above embodiments, the shoulder structure 283 can be understood as the 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 dimension of the second end of the first adapter plate 281 in the first direction is greater than the dimension of the second adapter plate 282 in the first direction, a cross-sectional structure extending in 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. This cross-sectional structure is the shoulder structure 283.

[0055] It should also be noted that when the armature spring assembly is used in different types of vacuum relays, the pressure provided by the connecting bracket 2 when the vacuum relay is normally open is different, and the pressure provided by the connecting bracket 2 when the vacuum relay is normally closed is also different. Based on this, since the third bend 280 at the connection between the first limiting plate 27 and the second limiting plate 28 is the main structure for forming the normally closed bending force, the flexibility of the third bend 280 at the connection between the first limiting plate 27 and the second limiting plate 28 can be changed by adjusting the dimensions of the first adapter plate 281 in the first direction and the second direction, thereby controlling the force value and ensuring that the pivot point of the armature 1 is always in contact with the magnetic cylinder 110. Similarly, since the second bend 25 at the connection between the connecting plate 23 and the limiting bracket 24 is the main structure providing normally closed pressure, the flexibility of the second bend 25 at the connection between the first limiting plate 27 and the connecting plate 23 can be changed by adjusting the dimensions of the connecting plate 23 in the first direction and the first limiting plate 27 in the first direction. This allows for force control, thus meeting the design requirements for normally closed pressure. In summary, when the armature spring assembly provided in this embodiment is applied to different types of vacuum relays, the pressure design requirements of different types of vacuum relays can be met by replacing the connecting bracket 2 with different specifications and sizes, which is beneficial for the mass production of vacuum relays.

[0056] It should also be noted that the magnetic gap between the armature 1 and the magnetic cylinder 110 can be changed by adjusting the position of the second bend 25 at the connection between the connecting plate 23 and the limiting bracket 24. That is, the angle between the surface of the armature 1 facing the magnetic cylinder 110 (i.e., the support surface 12) and the top surface of the magnetic cylinder 110 can be changed. If it is necessary to increase the magnetic gap between the armature 1 and the magnetic cylinder 110, that is, to increase the angle between the surface of the armature 1 facing the magnetic cylinder 110 and the top surface of the magnetic cylinder 110, the second bend 25 can be moved away from the first connecting bracket 21. Specifically, this can be achieved by increasing the dimension of the connecting plate 23 in the third direction and decreasing the dimension 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 cylinder 110, that is, to reduce the angle between the surface of the armature 1 facing the magnetic cylinder 110 and the top surface of the magnetic cylinder 110, the second bent portion will move towards the first connecting frame 21. Specifically, this can be achieved by reducing the dimension of the connecting plate 23 in the third direction and increasing the dimension 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 towards the limiting bracket 24.

[0057] In some embodiments, the second limiting plate 28 further includes a support plate 284, which 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 bend 285, wherein the plane where the support plate 284 is located intersects 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 bend 285, wherein the plane where the support plate 284 is located intersects 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 component 100. The armature 1 is located on the top wall of one end of the electromagnetic component 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 component 100. Under the action of the third bend 280 formed at the connection between the first limiting plate 27 and the second limiting plate 28, the armature 1 is forced. With the cooperation of the second bend 25, the limiting bracket 24 can ensure that the armature 1 returns to its initial position after the electromagnetic component 100 of the vacuum relay is de-energized.

[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 away from the armature 1, the pressure applied to the support plate 284 can be transferred to the magnetic cylinder 110 away from the armature 1. In addition, since the forces are mutual, the force applied by the support plate 284 to the magnetic cylinder 110 increases. At the same time, the support plate 284 can increase the welding area between the limiting bracket 24 and the magnetic cylinder 110, thereby increasing the stability between the connecting bracket 2 and the magnetic cylinder 110.

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

[0062] Since the first adapter plate 281 is an arc-shaped plate and the arc-shaped plate bends toward the mounting surface 11, the arc-shaped plate can form the third bending part 280. In addition, the arc-shaped plate has a smaller allowable external force when deforming, which makes it more conducive to the deformation of the third bending part 280.

[0063] In addition, in some embodiments, the second transition plates 282 of the two limiting arms 26 are in relative positions along the first direction, the second transition plate 282 of one limiting arm 26 is in clearance fit with the first side wall of the armature 1, and the second transition plate 282 of the other limiting arm 26 is in clearance fit with the second side wall of the armature 1, wherein the first side wall and the second side wall are two side walls of the armature 1 that are opposite each other in the first direction.

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

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

[0066] Since the two limiting arms 26 are spaced apart along the first direction to form an avoidance groove 286 between the two limiting arms 26, the two limiting arms 26 can be deformed independently by avoiding the groove 286, which reduces the deformation difficulty of the second bend 25 at the connection between the connecting plate 23 and the limiting bracket 24, and improves the overall flexibility of the connecting bracket 2.

[0067] Furthermore, it should be noted that since the connecting bracket 2 included in this application embodiment 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 adjustments. This not only reduces the installation difficulty between the armature 1 and the connecting bracket 2, but also reduces the manufacturing cost of the armature 1, which is conducive to the mass production of the armature spring assembly.

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

[0069] 1. The pressure of the normally open contact 002 can be provided through the first bending part 210. 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 part 210.

[0070] 2. The second bend 25 provides normally closed pressure, while allowing the connecting bracket 2 to deform. The external force required for deformation is small, thus reducing the operating voltage of the vacuum relay.

[0071] 3. The second bend 25 can press against the armature 1 and apply pressure to the armature 1 to ensure the contact surface between the armature 1 and the magnetic cylinder 110.

[0072] 4. The deformation force generated by the bending deformation of the third bending part 280 provides a downward holding force to the armature 1, so that the pivot point of the armature 1 is always in contact with the magnetic cylinder 110, thereby ensuring the magnetic conductivity between the magnetic cylinder 110 and the armature 1.

[0073] 5. Adjust the dimensions of the first limiting plate 27 in the first direction to change the flexibility of the second bending portion 25 at the connection between the first limiting plate 27 and the connecting plate 23, thereby achieving the control of the force value and thus meeting the design requirements of normally closed pressure.

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

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

[0076] The electromagnetic component 100 includes an electromagnetic coil 120 and a magnetic cylinder 110, with the electromagnetic coil 120 disposed in the magnetic cylinder 100;

[0077] The connecting bracket 2 and the magnetic cylinder 110 are fixedly connected. When the electromagnetic component 100 is de-energized, the armature 1 abuts against the surface of the magnetic cylinder 110 and the end face of the magnetic cylinder 110, and there is a first preset angle between the surface of the armature 1 and the end face of the magnetic cylinder 100.

[0078] In this embodiment, since the connecting bracket 2 includes a first connecting part 21 and a second connecting part 22 connected together, and the connection between the first connecting part 21 and the second connecting part 22 has a first bent part 210, when the armature spring assembly provided in this embodiment is applied to a vacuum relay, the first connecting part 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. When the electromagnetic component 100 is energized, the electromagnetic component 100 generates magnetism, thereby causing the armature 1 to rotate. The armature 1 can then drive the connecting bracket 2 to move, thereby causing the connecting bracket 2 to drive the first connecting part 21 and the second connecting part 22 to move, causing the first connecting part 21 and the second connecting part 22 to drive the transmission rod to move, thereby causing the normally open contact 002 of the vacuum relay to close, providing normally open pressure to the normally open contact 002. The first bent part 210 provides 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, and bending angle of the first bent part 210. Since the first connecting part 21 intersects with the mounting surface 11, and the second connecting part 22 includes a connected connecting plate 23 and a limiting bracket 24, the connection between the connecting plate 23 and the limiting bracket 24 has a second bend 25. Therefore, during the movement of the armature 1, the armature 1 applies force to the second connecting part 22 along the extending direction of the first connecting part 21, thereby changing the angle of the second bend 25 formed at the connection between the first connecting part 21 and the second connecting part 22. In other words, the second bend 25 provides normally closed pressure, while allowing the connecting bracket 2 to deform, and the external force required for deformation is relatively small. In the above process, the limiting bracket 24 is connected to the top wall of the magnetic cylinder 110 to achieve the positioning of the overall structure of the armature spring assembly. In summary, in this embodiment, the normally open pressure can be provided by the first bend 210 at the connection between the first connecting part 21 and the second connecting part 22, and the normally closed pressure can be ensured by the second bend 25 at the connection between the connecting plate 23 and the limiting bracket 24. At the same time, during the movement of the connecting bracket 2 driven by the armature 1, the connecting bracket 2 can be deformed by the change of the bending angle of the second bend 25, thereby reducing the rigidity of the connecting bracket 2 and thus reducing the operating voltage of the vacuum relay. This avoids the problem of high operating voltage of the vacuum relay, thereby ensuring that the operating voltage of the vacuum relay is small and saving energy.

[0079] It should be noted that the vacuum relay in the above embodiments may include an electromagnetic component 100 and an armature spring assembly in any of the above embodiments. The armature spring assembly includes a connecting bracket 2. The electromagnetic component 100 includes a magnetic cylinder 110 and an electromagnetic coil 120. The electromagnetic coil 120 is disposed in the magnetic cylinder 110. The armature 1 is disposed on the top wall of one end of the magnetic cylinder 110. The limiting bracket 24 includes a support plate 284 welded to the top wall of the magnetic cylinder.

[0080] The vacuum relay may further include a housing 200, with normally open contacts 002 and normally closed contacts 001 disposed within the housing 200, and a transmission rod disposed within the housing 200. A connecting bracket 2 may be disposed on the mounting surface 11 of the armature 1, and the connecting bracket 2 is mounted on the mounting surface 11 and connected to the transmission rod. Specifically, in this embodiment, the component connected to the transmission rod is the first connecting 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 abuts against the surface of the magnetic cylinder 110 (i.e., the end of the armature 1 near the first connecting part 21) and the top wall of one end of the magnetic cylinder 110. At the same time, the transmission rod moves to the normally open contact 002, so that the vacuum relay is in the normally open state. As the position of the armature 1 changes, the armature 1 applies force to the clamping member. When the electromagnetic coil 120 is de-energized, the armature 1 is reset under the action of the limiting bracket 24. During the reset process, the end of the armature 1 away from the first connecting part 21 serves as a rotating shaft and always abuts against the top wall of the other end of the magnetic cylinder 110. The transmission rod moves to the normally closed contact 001, so that the vacuum relay is in the normally closed state. In this design, the support surface 12 and the mounting surface 11 of the armature 1 are two opposing surfaces of the armature 1 in a direction perpendicular to the mounting surface 11, and the support surface 12 of the armature 1 faces the magnetic cylinder 110. When the vacuum relay is normally closed, there is an included angle between the support surface 12 of the armature and the end face of the magnetic cylinder 110.

[0081] It should be noted that the normally open pressure in this embodiment is the pressure that can close the normally open contact 002 and keep the contact closed, while the normally closed pressure in this embodiment is the pressure that can close the normally closed contact 001 and keep the contact closed.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

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

Claims

1. An armature spring assembly, characterized by The armature spring assembly comprises an armature and a connecting bracket; The connecting bracket comprises a first connecting part and a second connecting part connected with each other, and a first bending part is arranged at the connection between the first connecting part and the second connecting part; The armature has 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 bracket connected with each other, a second bending part is arranged at the connection between the connecting plate and the limiting bracket, the connecting plate is fixedly connected to the mounting surface, the limiting bracket has a avoiding cavity, and at least part of the armature is located in the avoiding cavity.

2. The armature spring assembly of claim 1, wherein, The limiting bracket comprises two limiting arms oppositely arranged along a first direction; The limiting arm comprises a first limiting plate and a second limiting plate connected with each other, the first limiting plate is connected to the connecting plate at the end away from the second limiting plate to form the second bending part, and a third bending part is arranged 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 spring assembly of claim 2, wherein, The first limiting plate is arranged to be inclined relative to the mounting surface, so that a first included angle is formed between the first limiting plate and the mounting surface.

4. The armature spring assembly of claim 2, wherein, The second limiting plate comprises 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 in which the mounting surface is located; The first adapter plate comprises a shoulder structure, and the shoulder structure is arranged at the connection between the second end of the first adapter plate and the second adapter plate; The shoulder structure has a limiting surface, the limiting surface faces the mounting surface, and the limiting surface and the mounting surface are in clearance fit.

5. The armature spring assembly of claim 4, wherein, The second limiting plate further comprises a support plate; The support plate is connected to the end of the second adapter plate away from the first adapter plate, and a fourth bending part is arranged at the connection between the support plate and the second adapter plate, wherein the plane in which the support plate is located intersects with the plane in which the second adapter plate is located.

6. The armature spring assembly of claim 5, wherein, The support plate extends away from the armature.

7. The armature spring assembly of claim 4, wherein, The first adapter plate is an arc-shaped plate, and the arc-shaped plate is bent towards the mounting surface.

8. The armature spring assembly of claim 4, wherein, The second adapter plates included by the two limiting arms are in opposite positions along the first direction; The second adapter plate included by one limiting arm is in clearance fit with the first side wall of the armature, and the second adapter plate included by the other limiting arm is in clearance fit with the second side wall of the armature, wherein the first side wall and the second side wall are two side walls of the armature opposite in the first direction.

9. The armature spring assembly of claim 2, wherein, The two limiting arms are arranged to be spaced apart along the first direction to form an avoiding through slot between the two limiting arms.

10. A vacuum relay, characterized by The vacuum relay comprises an electromagnetic assembly and the armature spring assembly according to any one of claims 1-9; The electromagnetic assembly comprises an electromagnetic coil and a magnetic conducting cylinder, and the electromagnetic coil is arranged in the magnetic conducting cylinder; The connecting support and the magnetic conducting cylinder are fixedly connected, in the power-off state of the electromagnetic assembly, the armature abuts against the surface of the magnetic conducting cylinder and the end face of the magnetic conducting cylinder, and the armature has a first preset included angle between the surface of the magnetic conducting cylinder and the end face of the magnetic conducting cylinder.

Images