relay

Abstract

The application discloses a relay, which comprises a moving spring assembly, a push rod assembly, a limiting assembly and an elastic assembly. The moving spring assembly comprises a moving spring leaf; the push rod assembly is used for pushing the moving spring assembly to move, so that the moving spring leaf is in contact with or separated from a static contact lead-out end; the limiting assembly is connected with the moving spring assembly and the push rod assembly, and is used for limiting the moving spring assembly from rotating around an axis of the push rod assembly relative to the push rod assembly, and the limiting assembly can be deformed to adapt to an overstroke; and the elastic assembly is used for providing a contact pressure.

Description

Technical Field

[0001] This application relates to the field of electronic control device technology, and more specifically, to a relay. Background Technology

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

[0003] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include a pair of stationary contact leads and a moving assembly. The moving assembly includes a moving spring and a push rod assembly. The moving spring is mounted on the push rod assembly via an elastic component. During the overtravel phase, the moving spring contacts the pair of stationary contact leads, and the push rod assembly continues to move upward, compressing the elastic component and thus creating contact pressure.

[0004] However, in existing high-voltage DC relays, the moving reed is prone to rotation relative to the push rod assembly, which can cause excessive deflection of the moving reed, resulting in inconsistent contact positions between the moving and stationary contacts, unstable contact resistance, and affecting the reliability of the relay. Summary of the Invention

[0005] This application provides a relay that can prevent the moving spring from rotating relative to the push rod assembly.

[0006] The relay in this application embodiment includes:

[0007] The moving spring assembly includes the moving spring leaf;

[0008] A push rod assembly is used to push the moving spring assembly to move so that the moving spring contact or separation is made from the stationary contact lead-out end;

[0009] A limiting assembly, connected to the movable spring assembly and the push rod assembly, is used to limit the rotation of the movable spring assembly relative to the push rod assembly about the axis of the push rod assembly, and the limiting assembly is deformable to accommodate overtravel; and

[0010] A flexible component is used to provide contact pressure.

[0011] According to some embodiments of this application, the elastic component is a first elastic spring;

[0012] The first elastic spring is connected to one of the push rod assembly and the moving spring assembly, and abuts against the other of the push rod assembly and the moving spring assembly.

[0013] According to some embodiments of this application, the first elastic spring and the moving spring assembly together form a receiving cavity, and the limiting component is housed within the receiving cavity.

[0014] According to some embodiments of this application, the relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are respectively used to contact or separate from the pair of stationary contact leads; wherein, the first direction is the arrangement direction of the pair of stationary contact leads;

[0015] The first elastic spring includes a first base and a spring arm. The first base is connected to the push rod assembly through a first anti-rotation structure, and at least one spring arm is provided at both ends of the first base along the first direction.

[0016] The spring arms at both ends of the first base along the first direction respectively abut against the two ends of the movable spring along the first direction.

[0017] According to some embodiments of this application, the spring arm includes an extension and an abutment. The extension is connected to the first base, and the abutment is connected to the end of the extension away from the first base and abuts against the end of the movable spring along the first direction; wherein the width of the end of the extension connected to the first base is greater than the width of the end of the extension connected to the abutment.

[0018] According to some embodiments of this application, the width of the extension decreases from the first base to the abutment portion.

[0019] According to some embodiments of this application, the first anti-rotation structure includes:

[0020] At least two first limiting protrusions are provided on the push rod assembly and one of the first bases; and

[0021] At least two first limiting holes are provided on the push rod assembly and the other of the first base; wherein at least two first limiting protrusions are respectively inserted into at least two first limiting holes.

[0022] According to some embodiments of this application, the limiting component is a second elastic spring, which is connected to one of the elastic component and the moving spring component through a second anti-rotation structure, and is connected to the other of the elastic component and the moving spring component through a third anti-rotation structure.

[0023] According to some embodiments of this application, the second anti-rotation structure includes:

[0024] At least two second limiting protrusions are provided on one of the elastic component and the second elastic spring;

[0025] At least two second limiting holes are provided on the elastic component and the other of the second elastic spring; wherein at least two second limiting protrusions are respectively inserted into at least two second limiting holes.

[0026] According to some embodiments of this application, the elastic component is connected to the push rod assembly via a first anti-rotation structure; the first anti-rotation structure includes at least two first limiting protrusions and at least two first limiting holes, the first limiting protrusions are disposed on the push rod assembly, the first limiting holes are disposed on the elastic component, and at least two of the first limiting protrusions are respectively inserted into at least two of the first limiting holes;

[0027] Each of the second limiting protrusions is a ring, and one ring surrounds one of the first limiting holes; the inner ring surface of the ring is flush with the hole wall of the first limiting hole.

[0028] According to some embodiments of this application, the convex ring is formed by folding the edge of the first limiting hole of the elastic component toward the direction of the moving spring assembly.

[0029] According to some embodiments of this application, the relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are respectively used to contact or separate from the pair of stationary contact leads; wherein, the first direction is the arrangement direction of the pair of stationary contact leads;

[0030] The second elastic spring includes a second base, a deformable portion, and a connecting portion;

[0031] The second base is connected to one of the elastic component and the moving spring component through the second anti-rotation structure. The second base is provided with the deformation part and the connecting part on both sides along the first direction. The second base is connected to the connecting part through the deformation part. The connecting part is connected to the other of the elastic component and the moving spring component through the third anti-rotation structure.

[0032] According to some embodiments of this application, along the first direction, the connecting portion on one side of the second base forms a first connection with the moving spring assembly, and the connecting portion on the other side of the second base forms a second connection with the moving spring assembly. There is a first distance between the first connection and the second connection, and there is a second distance between the deformable portions on both sides of the second base. The first distance is smaller than the second distance.

[0033] Wherein, the second distance is the maximum distance between the deformed portions on both sides of the second base.

[0034] According to some embodiments of this application, the third anti-rotation structure includes:

[0035] At least two third limiting protrusions are provided on one of the second elastic spring and the moving spring assembly; and

[0036] At least two third limiting holes are provided on the second elastic spring and the other of the moving spring assembly; at least two of the third limiting protrusions are respectively inserted into at least two of the third limiting holes.

[0037] According to some embodiments of this application, the relay further includes a first magnetic conductor;

[0038] The first magnetic conductor is located on the side of the moving spring assembly facing the stationary contact lead-out end, and is used to resist the electric repulsive force.

[0039] According to some embodiments of this application, the moving spring assembly further includes a second magnetic conductor, which is fixedly connected to the side of the moving spring facing away from the stationary contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

[0040] According to some embodiments of this application, the relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are respectively used to contact or separate from the pair of stationary contact leads; wherein, the first direction is the arrangement direction of the pair of stationary contact leads;

[0041] The limiting component is a second elastic spring, which includes a second base, a deformable portion, and a connecting portion.

[0042] The second base is provided with the deformable portion and the connecting portion on both sides along the first direction, and the second base is connected to the connecting portion through the deformable portion; the second base is connected to the elastic component;

[0043] The connecting portions on both sides of the second base are respectively inserted by the second magnetic conductor along both sides of the first direction between the second magnetic conductor and the moving spring, and are fixedly connected to the moving spring and the second magnetic conductor.

[0044] According to some embodiments of this application, the elastic component is a first elastic spring, the limiting component is a second elastic spring, and the thickness of the second elastic spring is less than the thickness of the first elastic spring.

[0045] According to some embodiments of this application, the elastic component is a compression spring, which is used to provide contact pressure.

[0046] According to some embodiments of this application, one end of the compression spring abuts against the limiting component, and the other end of the compression spring abuts against the moving spring assembly or the push rod assembly.

[0047] According to some embodiments of this application, the limiting component is a second elastic spring;

[0048] The second elastic spring includes a second base, a deformable portion, and a connecting portion; the second base is connected to the push rod assembly, and the deformable portion and the connecting portion are provided on both sides of the second base along a first direction, and the second base is connected to the connecting portion through the deformable portion; the connecting portion is connected to the moving spring assembly; wherein, the first direction is the arrangement direction of a pair of stationary contact lead-out ends;

[0049] The second elastic spring and the moving spring assembly form a cavity, the compression spring is housed in the cavity, one end of the compression spring abuts against the second base, and the other end of the compression spring abuts against the moving spring assembly.

[0050] According to some embodiments of this application, the relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are respectively used to contact or separate from the pair of stationary contact leads; wherein, the first direction is the arrangement direction of the pair of stationary contact leads;

[0051] The elastic component is limited to the push rod assembly along the first direction; and / or, the limiting component is limited to the moving spring assembly along the first direction; and / or, the limiting component is limited to the elastic component along the first direction.

[0052] According to some embodiments of this application, the push rod assembly includes a contact bracket.

[0053] An embodiment of the above application has at least the following advantages or beneficial effects:

[0054] The relay of this application embodiment includes a moving spring assembly, a push rod, a limiting assembly, and an elastic assembly. The elastic assembly can provide contact pressure, and the limiting assembly can restrict the moving spring assembly from rotating relative to the push rod assembly about the axis of the push rod assembly. This ensures the consistency of the contact position of the moving and stationary contacts, enhances the stability of the contact resistance, and improves the reliability of the relay. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the structure of a relay according to a first exemplary embodiment.

[0056] Figure 2 yes Figure 1 Sectional view of AA.

[0057] Figure 3 yes Figure 1 A cross-sectional view of BB.

[0058] Figure 4 This is a schematic diagram of the structure of a moving component and a second magnetic conductor according to an exemplary embodiment.

[0059] Figure 5 yes Figure 4 A schematic diagram of its breakdown.

[0060] Figure 6 yes Figure 4 The diagram omits the contact support structure, showing that the moving spring is not yet in contact with the stationary contact lead-out end.

[0061] Figure 7 This is a schematic diagram of the structure of a first elastic spring according to an exemplary embodiment.

[0062] Figure 8 This is a schematic diagram of the structure of a second elastic spring according to an exemplary embodiment.

[0063] Figure 9 yes Figure 4 A sectional view of CC.

[0064] Figure 10 yes Figure 9 A magnified view of the area at point X.

[0065] Figure 11 This is a schematic diagram of the moving component and two second magnetic conductors of a relay according to a second exemplary embodiment, wherein the contact support of the moving component is omitted.

[0066] Figure 12 This is an exploded schematic diagram of the moving component and two second magnetic conductors of a relay according to a second exemplary embodiment.

[0067] Figure 13 This is a schematic diagram of a moving component and two second magnetic conductors according to a third exemplary embodiment, wherein the contact support of the moving component is omitted.

[0068] Figure 14 yes Figure 13 A sectional view.

[0069] Figure 15 This is an exploded schematic diagram of a moving component and two second magnetic conductors according to a fourth exemplary embodiment.

[0070] Figure 16 This is an exploded schematic diagram of a moving component and two second magnetic conductors according to a fifth exemplary embodiment.

[0071] Figure 17 This is a schematic diagram of the moving component and two second magnetic conductors of a relay according to a sixth exemplary embodiment, wherein the contact support of the moving component is omitted.

[0072] Figure 18 yes Figure 4 The diagram omits the contact support structure, showing that the moving spring is already in contact with the stationary contact lead-out end.

[0073] The reference numerals in the attached figures are explained as follows:

[0074] 1000, Contact Container

[0075] 1001, Contact Chamber

[0076] 1002, First Through Hole

[0077] 1100, Insulating Cover

[0078] 1110. Ceramic cover

[0079] 1111, Third Through Hole

[0080] 1120, frame piece

[0081] 1200, yoke plate

[0082] 1210, Second Through Hole

[0083] 2000, stationary contact lead-out terminal

[0084] 3000, moving components

[0085] 3100, Moving Spring Assembly

[0086] 3110. Moving reed

[0087] 3200, Push Rod Assembly

[0088] 3210. Push rod

[0089] 3211, Base

[0090] 3212, Pole section

[0091] 3213, Card

[0092] 3214. First limiting protrusion

[0093] 3220, Contact Support

[0094] 3221. Top Wall

[0095] 3222, sidewall

[0096] 3223, swivel

[0097] 3230, Flexible Components

[0098] 4000, Magnetic Circuit Section

[0099] 4100, Coil Frame

[0100] 4200, coil

[0101] 4300, static iron core

[0102] 4400, moving iron core

[0103] 4410. Through hole

[0104] 4500, Reset component

[0105] 5000, metal cover

[0106] 6100, First Magnet

[0107] 6200, Second Magnet

[0108] 6300, Connector

[0109] 100. First elastic spring

[0110] 110. First base

[0111] 111. First limiting hole

[0112] 112.Protruding ring

[0113] 112a, Top surface

[0114] 112b, Inner Torus

[0115] 113. Chamfer

[0116] 120. Spring arm

[0117] 121. Extension

[0118] 122. Contact part

[0119] 200. First anti-rotation structure

[0120] 300, Limiting components

[0121] 300a, Second elastic spring

[0122] 310. Second base

[0123] 311. Second limiting hole

[0124] 320. Deformation section

[0125] 330. Connecting part

[0126] 400. Second anti-rotation structure

[0127] 410. Second limiting protrusion

[0128] 500, Receiving cavity

[0129] 600. Compression spring

[0130] 700, Third Anti-rotation Structure

[0131] 700a, First Connection Point

[0132] 700b, Second Connection

[0133] 710. Third limiting protrusion

[0134] 720, Third limiting hole

[0135] 800, Chamber Detailed Implementation

[0136] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0137] like Figures 1 to 3 As shown, the relay in this embodiment of the application includes a contact container 1000, a pair of stationary contact leads 2000, a moving component 3000, and a magnetic circuit portion 4000.

[0138] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0139] It should be noted that the contact container 1000 is a stationary component, a device used to house the contact assembly, which is mainly a housing and has a chamber. Furthermore, the contact container 1000 can be assembled from multiple components connected in a predetermined assembly manner.

[0140] The contact container 1000 has a contact chamber 1001 inside. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200. The insulating cover 1100 covers one side surface of the yoke plate 1200, and the insulating cover 1100 and the yoke plate 1200 together form the contact chamber 1001.

[0141] The insulating cover 1100 includes a ceramic cover 1110 and a frame plate 1120. The ceramic cover 1110 is connected to the yoke plate 1200 via the frame plate 1120. The frame plate 1120 can be a ring-shaped metal component, such as an iron-nickel alloy, and one end of the frame plate 1120 is connected to the opening edge of the ceramic cover 1110, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame plate 1120 is connected to the yoke plate 1200, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame plate 1120 positioned between the ceramic cover 1110 and the yoke plate 1200 facilitates their connection.

[0142] The contact container 1000 also has a pair of first through holes 1002, which communicate with the contact chamber 1001. The first through holes 1002 are used for the stationary contact lead-out end 2000 to pass through them. In the embodiments of this application, the first through holes 1002 are formed on the ceramic cover 1110.

[0143] A pair of stationary contact leads 2000 are connected to the ceramic cover 1110 of the contact container 1000, with at least a portion of each stationary contact lead 2000 located within the contact chamber 1001. One of the pair of stationary contact leads 2000 serves as a current inflow terminal, and the other serves as a current outflow terminal.

[0144] A pair of stationary contact leads 2000 are inserted one-to-one into a pair of first through holes 1002 and connected to the ceramic cover 1110, for example by welding.

[0145] The bottom of the stationary contact lead-out terminal 2000 serves as the stationary contact. The stationary contact can be integrally or separately located at the bottom of the stationary contact lead-out terminal 2000.

[0146] Please continue reading. Figures 1 to 3 The moving assembly 3000 includes a moving spring assembly 3100, a push rod assembly 3200, and an elastic assembly 3230. The moving spring assembly 3100 is disposed within the insulating cover 1100 and is mounted on the push rod assembly 3200 via the elastic assembly 3230. The two ends of the moving spring assembly 3100 along a first direction D1 are used to contact or separate from a pair of stationary contact leads 2000. The first direction D1 is the arrangement direction of the pair of stationary contact leads 2000.

[0147] The movable spring assembly 3100 includes a movable spring plate 3110, which may include a movable spring body and movable contacts located at both ends of the movable spring body. The movable contacts may be separate parts connected to the movable spring body. Alternatively, the movable contacts may be integrally formed onto the movable spring body.

[0148] The moving spring assembly 3100 includes at least one moving spring 3110, such as one, two, or three. In the embodiments of this application, the moving spring assembly 3100 includes two moving springs 3110 arranged side by side. One end of the two moving springs 3110 in a first direction D1 is used to contact or separate from the stationary contact of one of the stationary contact leads 2000, and the other end of the two moving springs 3110 in the first direction D1 is used to contact or separate from the stationary contact of the other stationary contact lead 2000.

[0149] The moving spring assembly 3100 may further include a second magnetic conductor 6200, which is fixedly connected to the side of the moving spring 3110 facing away from the stationary contact lead-out end 2000. The function of the second magnetic conductor 6200 will be explained below.

[0150] The moving spring assembly 3100 includes a corresponding number of moving spring pieces 3110 and second magnetic conductors 6200. Specifically, when there is one moving spring piece 3110, there is also one second magnetic conductor 6200; when there are multiple moving spring pieces 3110 (including two), there are also multiple second magnetic conductors 6200. Multiple second magnetic conductors 6200 are fixedly connected to the side of the multiple moving spring pieces 3110 facing away from the stationary contact lead-out end 2000, in a one-to-one correspondence.

[0151] Of course, in other embodiments, when the number of movable reeds 3110 is one, the number of second magnetic conductors 6200 can also be multiple. For example, the movable reed 3110 is provided with at least one opening in the middle, and two adjacent second magnetic conductors 6200 are inserted into one opening.

[0152] like Figure 4 and Figure 5 As shown, the direction of movement of the movable spring 3110 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3. The push rod assembly 3200 includes a push rod 3210, a contact support 3220, and an elastic component 3230. The contact support 3220 includes a top wall 3221 and two side walls 3222. The two side walls 3222 are integrally connected to the two sides of the top wall 3221 along the third direction D3, forming an inverted U-shaped support. The movable spring assembly 3100 is installed inside the contact support 3220 via the elastic component 3230. The upper end of the push rod 3210 is connected to the bottom ends of the two side walls 3222 of the contact support 3220.

[0153] Each sidewall 3222 of the contact support 3220 has a locking hole 3223 at its bottom end. The push rod 3210 includes a base 3211 and a rod portion 3212, with the base 3211 connected to one axial end of the rod portion 3212. The base 3211 has two clips 3213 on its two sides, which respectively engage with the two locking holes 3223 of the contact support 3220, thus fixing the base 3211 to the contact support 3220. An elastic component 3230 is disposed between the moving spring assembly 3100 and the base 3211, used to apply an elastic force to the moving spring assembly 3100, moving towards the top wall 3221, to provide contact pressure. In this embodiment, one end of the elastic component 3230 abuts against the moving spring assembly 3100, and the other end of the elastic component 3230 is mounted on the base 3211.

[0154] Of course, in other embodiments, the contact support 3220 may also have other structures, which will not be listed here.

[0155] When there are multiple moving reeds 3110, the multiple moving reeds 3110 are arranged side by side along the third direction D3.

[0156] Please return to the reference. Figures 1 to 3 The yoke plate 1200 has a second through hole 1210, which extends through two opposite sides of the yoke plate 1200 along its thickness direction and communicates with the contact chamber 1001 of the contact container 1000. A rod portion 3212 is axially movably inserted through the second through hole 1210. A base 3211 at one axial end of the rod portion 3212 is located within the contact chamber 1001.

[0157] The relay also includes a metal cover 5000, which is connected to the side of the yoke plate 1200 facing away from the insulating cover 1100, and the metal cover 5000 covers the second through hole 1210 on the yoke plate 1200. The metal cover 5000 and the yoke plate 1200 form a cavity for accommodating the stationary iron core 4300 and the moving iron core 4400 of the magnetic circuit section 4000.

[0158] The magnetic circuit section 4000 includes a coil frame 4100, a coil 4200, a stationary iron core 4300, a moving iron core 4400, and a reset component 4500. The coil frame 4100 is a hollow cylindrical shape and is formed of insulating material. A metal cover 5000 is inserted inside the coil frame 4100. The coil 4200 surrounds the coil frame 4100. The stationary iron core 4300 is fixedly disposed inside the metal cover 5000, and a portion of the stationary iron core 4300 extends into the second through hole 1210. The stationary iron core 4300 has a through hole 4410, which is positioned corresponding to the second through hole 1210, for the rod portion 3212 to pass through. The moving iron core 4400 is movably disposed within the metal cover 5000 and is positioned axially opposite to the stationary iron core 4300 along the rod portion 3212. The moving iron core 4400 is connected to the rod portion 3212 and is attracted by the stationary iron core 4300 when the coil 4200 is energized. The moving iron core 4400 and the rod portion 3212 can be connected by screwing, riveting, welding, or other methods.

[0159] The reset element 4500 is located inside the metal cover 5000 and is positioned between the stationary iron core 4300 and the moving iron core 4400. It is used to reset the moving iron core 4400 when the coil 4200 is de-energized. The reset element 4500 can be a spring and is sleeved on the outside of the rod portion 3212.

[0160] It should be noted that when the coil 4200 is energized, the magnetic circuit part 4000 can drive the rod part 3212 to push the push rod assembly 3200 to move upward. When the moving spring 3110 contacts the stationary contact lead-out end 2000, the moving spring 3110 is stopped by the stationary contact lead-out end 2000, while the rod part 3212 and the base 3211 will continue to move upward until the overtravel is completed.

[0161] like Figures 2 to 4 As shown, the relay in this embodiment of the application further includes a first magnetic conductor 6100. The moving spring 3110 has a first side and a second side disposed opposite to each other along a second direction D2. The first side faces the stationary contact lead-out end 2000, and the second side faces away from the stationary contact lead-out end 2000. The first magnetic conductor 6100 is disposed on the first side of the moving spring 3110 and is disposed within the contact chamber 1001.

[0162] When the moving spring assembly 3100 includes only the moving spring 3110 and does not include the second magnetic conductor 6200, after the moving spring 3110 is energized, the first magnetic conductor 6100 is magnetized, thereby forming an attractive force on the moving spring 3110 in the direction of contact closure. This attractive force can resist the electric repulsive force generated by the short circuit current between the moving spring 3110 and the stationary contact lead-out terminal 2000, preventing the moving spring 3110 from springing away from the stationary contact lead-out terminal 2000, thus achieving the purpose of short circuit protection.

[0163] When the moving spring assembly 3100 includes a moving spring 3110 and a second magnetic conductor 6200, the second magnetic conductor 6200 is fixedly connected to the moving spring 3110, and the second magnetic conductor 6200 is used to form a magnetic circuit with the first magnetic conductor 6100.

[0164] When the two ends of the movable spring 3110 contact the pair of stationary contact leads 2000, the second magnetic conductor 6200, which moves together with the movable spring 3110, approaches or contacts the first magnetic conductor 6100, thereby forming a magnetic circuit around the movable spring 3110 between the first magnetic conductor 6100 and the second magnetic conductor 6200. When a short-circuit current passes through the movable spring 3110, a magnetic attraction force is generated between the first magnetic conductor 6100 and the second magnetic conductor 6200 along the contact pressure direction. This magnetic attraction force can resist the electrodynamic repulsion force generated between the movable spring 3110 and the stationary contact leads 2000 due to the short-circuit current, ensuring that the movable spring 3110 and the stationary contact leads 2000 do not spring apart.

[0165] It is understandable that the second magnetic conductor 6200 and the moving spring 3110 can be fixedly connected by riveting, but this is not a limitation.

[0166] The first magnetic conductor 6100 and the second magnetic conductor 6200 can both be in the shape of a straight line or a U-shape. The first magnetic conductor 6100 and the second magnetic conductor 6200 can be made of magnetic materials such as iron, cobalt, nickel and their alloys.

[0167] When the moving spring assembly 3100 includes multiple moving springs 3110 arranged side by side, the number of first magnetic conductors 6100 can be multiple, and the number of first magnetic conductors 6100 corresponds to the number of moving springs 3110. The multiple first magnetic conductors 6100 are respectively located on the side of the multiple moving springs 3110 facing the stationary contact lead-out end 2000.

[0168] Of course, in other embodiments, when the moving spring assembly 3100 includes a plurality of moving springs 3110 arranged side by side, the number of first magnetic conductors 6100 can be one, which spans the plurality of moving springs 3110 in the third direction D3.

[0169] The first magnetic conductor 6100 can be connected to the contact container 1000 via two connectors 6300. One end of each connector 6300 is connected to the contact container 1000, and the other end is connected to the first magnetic conductor 6100.

[0170] Understandably, the first magnetic conductor 6100 is connected to the contact container 1000 via the connector 6300. In this way, the magnetic attraction force for short circuit resistance is transferred to the contact container 1000. Since the contact container 1000 is a stationary component, there is no need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short circuit resistance capability.

[0171] In one embodiment, the connector 6300 is rod-shaped, with one axial end of the connector 6300 fixedly connected to the ceramic cover 1110 of the insulating cover 1100, and the other axial end of the connector 6300 connected to the first magnetic conductor 6100.

[0172] In this embodiment of the application, the top wall of the ceramic cover 1110 of the contact container 1000 is provided with a third through hole 1111, and the connector 6300 passes through the third through hole 1111. The connection between one axial end of the connector 6300 and the ceramic cover 1110 can be implemented in various ways, such as welding, riveting, screwing, or bonding. The connection between the other end of the connector 6300 and the first magnetic conductor 6100 can also be implemented in various ways, such as welding, riveting, screwing, bonding, or snap-fitting.

[0173] It is understandable that when the connection between one end of the connector 6300 and the ceramic cover 1110 is made by welding, by welding the connector 6300 to the top wall of the ceramic cover 1110, the metallization layer can be processed only around the third through hole 1111 on the outer wall surface of the top wall, without the need to process the metallization layer on the inner wall surface of the top wall, which is convenient for processing and simplifies the processing steps.

[0174] It is understandable that one end of the connector 6300 can be connected to the outer wall surface of the ceramic cover 1110, or to the inner wall surface of the ceramic cover 1110, or to both the outer and inner wall surfaces of the ceramic cover 1110 at the same time.

[0175] In this embodiment of the application, one end of the connector 6300 is connected to the periphery of the third through hole 1111 of the ceramic cover 1110.

[0176] It can be seen that the first magnetic conductor 6100 is connected to the ceramic cover 1110 through the connector 6300. On the one hand, the magnetic attraction force for short circuit resistance is transferred to the ceramic cover 1110, so there is no need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short circuit resistance capability. On the other hand, since the connector 6300 is connected to the ceramic cover 1110, it will not occupy too much space in the contact chamber 1001, ensuring the arc extinguishing space of the arc extinguishing component and the movement space of the push rod.

[0177] In addition, the first magnetic conductor 6100 is connected to the rod-shaped connector 6300, so that the first magnetic conductor 6100 and the connector 6300 can be connected in a variety of ways, such as riveting, laser welding, snap-fitting, adhesive bonding, etc., which enriches the connection methods.

[0178] As an example, connector 6300 is a solid rod. Thus, connector 6300 and the first magnetic conductor 6100 can be connected by riveting, making the connection more reliable. Furthermore, the solid rod provides higher support strength and is less prone to deformation.

[0179] like Figure 5 and Figure 6 , Figure 18 As shown, the relay also includes a limiting component 300, which is connected to the moving spring assembly 3100 and the push rod assembly 3200. The limiting component 300 is used to limit the rotation of the moving spring assembly 3100 relative to the push rod assembly 3200 about the axis of the push rod assembly 3200, and the limiting component 300 can deform to accommodate overtravel.

[0180] It is understandable that the connection between the limiting component 300 and the push rod assembly 3200 can be direct or indirect. When the limiting component 300 and the push rod assembly 3200 are indirectly connected, the limiting component 300 can be connected to the push rod assembly 3200 through the elastic component 3230, that is, the elastic component 3230 is directly connected to the push rod assembly 3200, and the limiting component 300 is directly connected to the elastic component 3230.

[0181] The relay of this application embodiment includes a moving spring assembly 3100, a push rod 3210, a limiting assembly 300, and an elastic assembly 3230. The elastic assembly 3230 can provide contact pressure, and the limiting assembly 300 can restrict the rotation of the moving spring assembly 3100 relative to the push rod 3210. This ensures the consistency of the contact position of the moving and stationary contacts, enhances the stability of the contact resistance, and improves the reliability of the relay.

[0182] It should be noted that, in this embodiment, the limiting component 300 can restrict the rotation of the movable spring assembly 3100 about an axis perpendicular to the plane where the movable spring assembly 3100 is located. That is, the limiting component 300 can restrict the movable spring assembly 3100 from rotating about the axis of the push rod assembly 3200 relative to the push rod assembly 3200.

[0183] like Figure 6 and Figure 7 As shown, the elastic component 3230 is the first elastic spring 100. As an example, the first elastic spring 100 is a sheet-like structure made of metal material and is formed by bending.

[0184] The first elastic spring 100 is mounted on the base 3211 of the push rod 3210 via the first anti-rotation structure 200, and abuts against the side surface of the movable spring 3110 of the movable spring assembly 3100 facing the push rod 3210.

[0185] The first elastic spring 100 is disposed on the second side of the movable spring 3110 and includes a first base 110 and a spring arm 120. The first base 110 is mounted on the push rod 3210 through the first anti-rotation structure 200, and at least one spring arm 120 is provided at both ends of the first base 110 along the first direction D1; the spring arms 120 at both ends of the first base 110 along the first direction D1 abut against the two ends of the movable spring assembly 3100 along the first direction D1 respectively.

[0186] In the embodiments of this application, the spring arms 120 at both ends of the first base 110 along the first direction D1 abut against both ends of the movable spring 3110.

[0187] Understandably, since the spring arms 120 at both ends of the first elastic spring 100 are supported at both ends of the movable spring 3110, the movable spring 3110 and the second magnetic conductor 6200 can be stably installed on the push rod 3210, avoiding the movable spring 3110 and the second magnetic conductor 6200 from shaking. This further avoids the problem of uneven contact pressure caused by the shaking of the movable spring 3110 and the problem of the short-circuit withstand capability being affected by the shaking of the second magnetic conductor 6200.

[0188] The first elastic spring 100 and the moving spring assembly 3100 together form a receiving cavity 500, and the limiting assembly 300 is housed within the receiving cavity 500. By placing the limiting assembly 300 within the receiving cavity 500, the structure of the moving assembly 3000 can be made more compact, which is beneficial for miniaturizing the relay.

[0189] like Figure 5 As shown, at both ends of the first base 110 in the first direction D1, there are at least two spring arms 120 arranged side by side along the third direction D3. The two spring arms 120 of the first elastic spring 100 in the first direction D1 respectively abut against the two ends of the first direction D1 of a movable spring 3110.

[0190] In the embodiments of this application, two spring arms 120 are provided at both ends of the first direction D1 of the first base 110, which are arranged side by side along the third direction D3. The two spring arms 120 at one end of the first direction D1 of the first base 110 abut against one end of two side by side movable springs 3110, and the two spring arms 120 at the other end of the first direction D1 of the first base 110 abut against the other end of two side by side movable springs 3110.

[0191] Therefore, in the embodiments of this application, each movable spring 3110 corresponds to a pair of spring arms 120. Thus, when the contact gaps between the multiple movable springs 3110 and the stationary contact lead-out end are inconsistent, the multiple movable springs 3110 will not interfere with each other.

[0192] like Figure 7 As shown, each spring arm 120 includes an extension 121 and an abutment 122. The extension 121 is connected to the first base 110, and the abutment 122 is connected to the end of the extension 121 away from the first base 110 and abuts against the end of the movable spring 3110 in the first direction D1. The width of the end of the extension 121 connected to the first base 110 is greater than the width of the end of the extension 121 connected to the abutment 122. Furthermore, the width of the extension 121 decreases from the first base 110 to the abutment 122.

[0193] In this embodiment, the first elastic spring 100 includes a first base 110 and a spring arm 120. Since the width of the extension 121 of the spring arm 120 decreases from the first base 110 to the abutment portion 122, that is, the width of the extension 121 gradually narrows, the structural strength of the spring arm 120 can be reduced, making the spring arm 120 more flexible. In the initial stage of overtravel, after the moving spring 3110 just contacts the stationary contact lead-out end 2000, the spring arm 120 will not provide excessive elastic force, avoiding mismatch of suction and reaction forces. In addition, because the width of the extension 121 gradually narrows, the weight of the first elastic spring 100 can be slightly reduced. Furthermore, since the width of the extension 121 decreases, sufficient space can be reserved in the third direction D3 for setting other structures.

[0194] Furthermore, the width of the first base 110 is greater than the width of the extension 121. Since the first base 110 is connected to the push rod 3210, and the width of the first base 110 is larger than the width of the extension 121, the structural strength of the first base 110 of the first elastic spring 100 can be guaranteed, so that the first elastic spring 100 can be firmly connected to the push rod 3210.

[0195] Furthermore, the wider root of the extension 121 results in better mechanical strength, which is beneficial for improving the fatigue resistance of the first elastic spring 100. The gradually narrowing design of the extension 121 causes the stiffness coefficient of the first elastic spring 100 to change non-linearly, reducing the elastic reaction force in the initial stage and avoiding mismatch of suction reaction force at the beginning of overtravel. Moreover, as the first elastic spring 100 is gradually compressed, its progress coefficient increases, ensuring that sufficiently large contact pressure can be provided.

[0196] like Figures 5 to 7As shown, the first anti-rotation structure 200 includes at least two first limiting protrusions 3214 and at least two first limiting holes 111. The first limiting protrusions 3214 are disposed on one of the first base 110 and the push rod assembly 3200, and the first limiting holes 111 are disposed on the other of the first base 110 and the push rod assembly 3200. The at least two first limiting protrusions 3214 are respectively inserted into the at least two first limiting holes 111 to achieve the anti-rotation effect.

[0197] In the embodiments of this application, at least two first limiting protrusions 3214 are provided on the side surface of the push rod 3210 facing the moving spring assembly 3100; at least two first limiting holes 111 are provided on the first base 110.

[0198] In this embodiment of the application, the first anti-rotation structure 200 includes two first limiting protrusions 3214 and two first limiting holes 111. The two first limiting protrusions 3214 protrude from the side surface of the base 3211 facing the moving spring assembly 3100, and the two first limiting protrusions 3214 are arranged side by side along the third direction D3 and are respectively inserted into the two first limiting holes 111.

[0199] It should be noted that, since the first anti-rotation structure 200 of this application embodiment includes at least two mutually cooperating first limiting protrusions 3214 and first limiting holes 111, the shape of the first limiting hole 111 can be circular.

[0200] Of course, in other embodiments, the first anti-rotation structure 200 may also include a first limiting protrusion 3214 and a first limiting hole 111, wherein the shape of the first limiting hole 111 is a non-circular shape such as a rectangle, ellipse, or triangle. The shape of the first limiting protrusion 3214 is adapted to the first limiting hole 111 and is inserted into the first limiting hole 111, which can prevent relative rotation between the push rod 3210 and the first elastic spring 100.

[0201] Understandably, the first anti-rotation structure 200 is used to limit the rotation of the first elastic spring 100 relative to the push rod assembly 3200 about the axis of the push rod assembly 3200.

[0202] It is understood that in other embodiments, the first anti-rotation structure 200 may also include a riveting structure, a welding structure, an adhesive structure, etc. When the first anti-rotation structure 200 is a riveting structure, the first base 110 is riveted to the push rod assembly 3200; when the first anti-rotation structure 200 is a welding structure, the first base 110 is welded to the push rod assembly 3200; when the first anti-rotation structure 200 is an adhesive structure, the first base 110 is bonded to the push rod assembly 3200.

[0203] In another embodiment, the first anti-rotation structure 200 may further include fasteners that securely connect the first elastic spring 100 and the push rod assembly 3200.

[0204] like Figure 5 , Figure 6 and Figure 8 As shown, the limiting component 300 is a second elastic spring 300a, which can be a sheet-like structure made of metal material and formed by bending. The second elastic spring 300a is connected to one of the elastic component 3230 and the moving spring component 3100 through a second anti-rotation structure 400, and is connected to the other of the elastic component 3230 and the moving spring component 3100 through a third anti-rotation structure 700.

[0205] In the embodiments of this application, the second elastic spring 300a is connected to the first base 110 through the second anti-rotation structure 400, and is connected to the moving spring assembly 3100 through the third anti-rotation structure 700.

[0206] like Figures 8 to 10 As shown, the second anti-rotation structure 400 includes at least two second limiting protrusions 410 and at least two second limiting holes 311. The second limiting protrusions 410 are provided on one of the first elastic spring 100 and the second elastic spring 300a, and the second limiting holes 311 are provided on the other of the first elastic spring 100 and the second elastic spring 300a.

[0207] In this embodiment of the application, each second limiting protrusion 410 is a protruding ring 112. At least two protruding rings 112 are disposed on the side surface of the first base 110 facing the moving spring assembly 3100, and one protruding ring 112 surrounds a first limiting hole 111; the inner ring surface 112b of the protruding ring 112 is flush with the hole wall of the first limiting hole 111; at least two second limiting holes 311 are disposed in the second elastic spring 300a; wherein, at least two protruding rings 112 are respectively inserted into at least two second limiting holes 311.

[0208] In this embodiment of the application, the second anti-rotation structure 400 includes two protruding rings 112 and two second limiting holes 311.

[0209] It should be noted that, since the second anti-rotation structure 400 of this application embodiment includes at least two mutually cooperating convex rings 112 and a second limiting hole 311, the shape of the second limiting hole 311 can be circular.

[0210] Of course, in other embodiments, the second anti-rotation structure 400 may also include a convex ring 112 and a second limiting hole 311, and the shape of the second limiting hole 311 is a non-circular shape such as a rectangle, ellipse, or triangle. The convex ring 112 is inserted into the second limiting hole 311, which can prevent relative rotation between the second elastic spring 300a and the first elastic spring 100.

[0211] Understandably, the second anti-rotation structure 400 is used to limit the rotation of the second elastic spring 300a relative to the first elastic spring 100 about the axis of the push rod assembly 3200.

[0212] In one embodiment, the convex ring 112 is formed by folding the edge of the first limiting hole 111 of the first base 110 toward the moving spring assembly 3100. In this embodiment, by providing the convex ring 112 at the edge of the first limiting hole 111, the friction between the first limiting protrusion 3214 and the first base 110 can be reduced and scraping can be prevented when the first base 110 is assembled with the push rod 3210. At the same time, the convex ring 112 cooperates with the second limiting hole 311 of the second elastic spring 300a, which can also prevent the second elastic spring 300a from rotating relative to the first elastic spring 100. In addition, the folded convex ring 112 can increase the contact area between the first limiting protrusion 3214 and the first base 110, reducing the wear between the first limiting protrusion 3214 and the first base 110 during movement.

[0213] like Figure 10 As shown, the convex ring 112 has a top surface 112a facing away from the first base 110, and a chamfer 113 is provided at the connection between the top surface 112a and the inner ring surface 112b. By providing a chamfer 113 at the connection between the top surface 112a and the inner ring surface 112b, burrs generated during the forming of the convex ring 112 can be eliminated, and further prevents scraping between the first limiting protrusion 3214 and the inner ring surface 112b of the convex ring 112.

[0214] It is understood that in other embodiments, the second anti-rotation structure 400 may also include a riveting structure, a welding structure, an adhesive structure, etc. When the second anti-rotation structure 400 is a riveting structure, the first elastic spring 100 and the second elastic spring 300a are riveted together; when the second anti-rotation structure 400 is a welding structure, the first elastic spring 100 and the second elastic spring 300a are welded together; when the second anti-rotation structure 400 is an adhesive structure, the first elastic spring 100 and the second elastic spring 300a are adhesively bonded together.

[0215] In another embodiment, the second anti-rotation structure 400 may further include a fastener that securely connects the first elastic spring 100 and the second elastic spring 300a.

[0216] Please return to the reference. Figure 6 and Figure 8 As shown, a second elastic spring 300a is disposed on the second side of the movable spring assembly 3100. The second elastic spring 300a includes a second base 310, a deformation portion 320, and a connecting portion 330. The second base 310 is mounted on one of the first elastic spring 100 and the movable spring assembly 3100 via a second anti-rotation structure 400. The second base 310 has a deformation portion 320 and a connecting portion 330 on both sides along the first direction D1, and the second base 310 is connected to the connecting portion 330 via the deformation portion 320; the connecting portion 330 is connected to the other of the first elastic spring 100 and the movable spring assembly 3100 via a third anti-rotation structure 700.

[0217] In this embodiment, the connecting portion 330 of the second elastic spring 300a is connected to the moving spring assembly 3100 via the third anti-rotation structure 700, and the second base 310 is mounted on the first base 110 of the first elastic spring 100 via the second anti-rotation structure 400. Thus, the second elastic spring 300a can position the moving spring assembly 3100 in the second direction D2 and limit its movement in the first direction D1 and the third direction D3. This achieves the limitation of the moving spring assembly 3100, preventing rotation of the moving spring assembly 3100 relative to the push rod 3210, thereby preventing misalignment of the moving and stationary contacts and ensuring the reliability of the relay. Furthermore, the limitation of the moving spring assembly 3100 by the second elastic spring 300a prevents ripples caused by contact between the moving spring assembly 3100 and the contact support when the moving spring assembly 3100 is energized.

[0218] Furthermore, since the moving spring assembly 3100 does not rotate, it can reduce or even prevent contact between the moving spring assembly 3100 and the side wall of the contact support 3220 to a certain extent, thereby avoiding the generation of large ripple noise (metal friction noise). Additionally, it avoids the increase in the fit clearance due to increased friction and wear, which would lead to increased deflection force and frictional resistance. Moreover, it can reduce the metal particles generated by the mutual friction between the moving spring assembly 3100 and the contact support 3220, reducing the probability of metal particles falling onto the contact surface, thereby reducing the quality risk of increased contact resistance or even non-conduction.

[0219] During the overtravel process, the push rod 3210 continues to move toward the moving spring assembly 3100. At this time, the deformation part 320 is compressed and deformed, which does not affect the overtravel.

[0220] Furthermore, since the first elastic spring 100 is used to provide contact pressure, while the second elastic spring 300a does not need to provide contact pressure, the thickness of the second elastic spring 300a can be less than the thickness of the first elastic spring 100, thereby reducing the stress at the bending point of the second elastic spring 300a and preventing fatigue fracture of the second elastic spring 300a.

[0221] In this embodiment of the application, along the first direction D1, two deformable portions 320 and two connecting portions 330 are provided on both sides of the second base 310. One side of the second base 310 is connected to the two connecting portions 330 through the two deformable portions 320. The two deformable portions 320 located on one side of the second base 310 are arranged side by side along the third direction D3. The two connecting portions 330 located on one side of the second base 310 are respectively fixedly connected to two moving spring assemblies 3100.

[0222] Therefore, in the embodiments of this application, each movable spring 3110 corresponds to a pair of connecting parts 330. Thus, when the contact gaps between the multiple movable springs 3110 and the stationary contact lead-out end are inconsistent, the multiple movable springs 3110 will not interfere with each other.

[0223] like Figure 6 As shown, along the first direction D1, the connecting portion 330 on one side of the second base 310 forms a first connection 700a with the moving spring assembly 3100, and the connecting portion 330 on the other side of the second base 310 forms a second connection 700b with the moving spring assembly 3100. A first distance L1 exists between the first connection 700a and the second connection 700b, and a second distance L2 exists between the deformable portions 320 on both sides of the second base 310. The first distance L1 is less than the second distance L2. The second distance L2 is the maximum distance between the deformable portions 320 on both sides of the second base 310.

[0224] In this embodiment, since the first distance L1 is smaller than the second distance L2, during the overtravel process, the second elastic spring 300a is compressed by the push rod 3210 and the moving spring assembly 3100, causing the deformation portions 320 on both sides of the second base 310 to deform in a direction away from each other (the deformation portions 320 on both sides expand outwards), thus preventing the second elastic spring 300a from jamming and failing to provide contact pressure. Furthermore, since the first distance L1 is smaller than the second distance L2, the deformation portions 320 on both sides of the second base 310 are essentially bent in a direction closer to each other, which reduces the overall volume of the second elastic spring 300a and lowers the space occupancy rate.

[0225] Of course, in other embodiments, if the internal space of the relay is large enough, the first distance L1 can also be greater than the second distance L2.

[0226] like Figure 6 and Figure 8 As shown, the third anti-rotation structure 700 includes at least two third limiting protrusions 710 and at least two third limiting holes 720. The at least two third limiting protrusions 710 are disposed on one of the second elastic spring 300a and the movable spring assembly 3100, and the at least two third limiting holes 720 are disposed on the other of the second elastic spring 300a and the movable spring assembly 3100. The at least two third limiting protrusions 710 are respectively inserted into the at least two third limiting holes 720.

[0227] In this embodiment of the application, there are four third limiting holes 720 and four third limiting protrusions 710. The four third limiting holes 720 are respectively provided on the four connecting portions 330, and the four third limiting protrusions 710 are provided on the two second magnetic conductors 6200, with each second magnetic conductor 6200 having two third limiting protrusions 710.

[0228] It is understood that in other embodiments, the third anti-rotation structure 700 may also include a riveting structure, a welding structure, an adhesive structure, etc. When the third anti-rotation structure 700 is a riveting structure, the second base 310 is riveted to the first elastic spring 100 or the moving spring assembly 3100; when the third anti-rotation structure 700 is a welding structure, the second base 310 is welded to the first elastic spring 100 or the moving spring assembly 3100; when the third anti-rotation structure 700 is an adhesive structure, the second base 310 is adhesively bonded to the first elastic spring 100 or the moving spring assembly 3100.

[0229] In another embodiment, the third anti-rotation structure 700 may further include a fastener that securely connects one of the first elastic spring 100 and the moving spring assembly 3100 to the second elastic spring 300a.

[0230] In one embodiment, the elastic component 3230 is limitedly connected to the push rod assembly 3200 along the first direction D1; and / or, the limiting component 300 is limitedly connected to the movable spring assembly 3100 along the first direction D1; and / or, the limiting component 300 is limitedly connected to the elastic component 3230 along the first direction D1. This reduces the amplitude of the movable spring assembly 3100's movement relative to the push rod assembly 3200 in the first direction D1, improving the overall shock resistance of the relay.

[0231] Preferably, the elastic component 3230 and the push rod assembly 3200 are connected in a limiting connection along the first direction D1, and the limiting component 300 and the moving spring assembly 3100 are connected in a limiting connection along the first direction D1, and the limiting component 300 and the elastic component 3230 are connected in a limiting connection along the first direction D1. In this way, when the relay encounters a large impact, the moving contact and the stationary contact will not shift, avoiding unstable contact resistance.

[0232] In another embodiment, the third limiting hole 720 is elliptical in shape, with its major axis parallel to the first direction D1. By designing the third limiting hole 720 as elliptical, the third limiting protrusion 710 is positioned at the outer edge of the third limiting hole 720 before the moving and stationary contacts make contact, preventing the moving spring assembly 3100 from shifting. After the moving and stationary contacts make contact, the second elastic spring 300a is compressed, and the connecting portions and deformable portions on both sides of the second base 310 tend to move to the sides. At this time, the elliptical third limiting hole 720 provides space for the connecting portion 330 to move, thereby releasing the stress generated inside the second elastic spring 300a after compression and preventing excessive stress concentration inside the second elastic spring 300a from affecting its service life.

[0233] Furthermore, it is worth noting that since the connecting part 330 moves a small distance within the ellipse, it does not affect the relative position of the moving contact and the stationary contact.

[0234] It is understandable that the first anti-rotation structure 200, the second anti-rotation structure 400, and the third anti-rotation structure 700 can be the same or different.

[0235] like Figure 11 and Figure 12 As shown, the relay of the second embodiment has a substantially the same basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the second embodiment, the structure already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the relay described in the first embodiment will be labeled with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment will be mainly described.

[0236] In the second embodiment, the second elastic spring 300a includes a second base 310, a deformation portion 320, and a connecting portion 330. The second base 310 is connected to the moving spring assembly 3100 via a second anti-rotation structure 400. The second base 310 has a deformation portion 320 and a connecting portion 330 on both sides in the first direction D1. The second base 310 is connected to the connecting portion 330 via the deformation portion 320, and the connecting portion 330 is connected to the first base 110 of the first elastic spring 100 via a third anti-rotation structure 700.

[0237] In this embodiment, the second base 310 is connected to the second magnetic conductor 6200 via the second anti-rotation structure 400. The second limiting hole 311 of the second anti-rotation structure 400 is provided on the second base 310, and the second limiting protrusion 410 is provided on the second magnetic conductor 6200. The third limiting hole 720 of the third anti-rotation structure 700 is provided on the connecting portion 330, and the third limiting protrusion 710 is provided on the first base 110.

[0238] like Figure 13 and Figure 14 As shown, the relay of the third embodiment has a substantially the same basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the third embodiment, the structure already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the relay described in the first embodiment will be labeled with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment will be mainly described.

[0239] In the third embodiment, the second base 310 of the second elastic spring 300a is connected to the first base 110 of the first elastic spring 100 via the second anti-rotation structure 400. The connecting portions 330 on both sides of the second base 310 are respectively inserted between the second magnetic conductor 6200 and the movable spring 3110 along the first direction D1 by the second magnetic conductor 6200 on both sides, and are fixedly connected to the movable spring 3110 and the second magnetic conductor 6200.

[0240] like Figure 15 As shown, the relay of the fourth embodiment has a substantially the same basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the fourth embodiment, the structures already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the relay described in the first embodiment will be labeled with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment will be mainly described.

[0241] In the fourth embodiment, the movable spring assembly 3100 includes a movable spring 3110 and a second magnetic conductor 6200. A spring arm 120 is provided on both sides of the first base 110, and a deformation part 320 and a connecting part 330 are provided on both sides of the second base 310.

[0242] like Figure 16 As shown, the relay of the fifth embodiment has a substantially the same basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the fifth embodiment, the structure already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the relay described in the first embodiment will be labeled with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment will be mainly described.

[0243] In the fifth embodiment, the movable spring assembly 3100 includes three movable spring pieces 3110 arranged side by side and three second magnetic conductors 6200. Three spring arms 120 are provided on both sides of the first base 110, and three deformation portions 320 and three connecting portions 330 are provided on both sides of the second base 310. The three spring arms 120 on one side of the first base 110 abut against one end of each of the three movable spring pieces 3110, and the three spring arms 120 on the other side of the first base 110 abut against the other end of each of the three movable spring pieces 3110. The six connecting portions 330 on both sides of the second base 310 are divided into three pairs, with the two connecting portions 330 in each pair arranged opposite each other in the first direction D1. The three pairs of connecting portions 330 are respectively connected to the three second magnetic conductors 6200 one by one.

[0244] like Figure 17 As shown, the relay of the sixth embodiment has a substantially the same basic structure as the relay of the first embodiment. Therefore, in the following description of the relay of the sixth embodiment, the structure already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the relay described in the first embodiment will be labeled with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment will be mainly described.

[0245] In the sixth embodiment, the elastic component 3230 is a compression spring 600. The compression spring 600 is disposed within the cavity 800 formed by the second elastic spring 300a and the second magnetic conductor 6200, with one end of the compression spring 600 abutting against the second magnetic conductor 6200 and the other end abutting against the second base 310 of the second elastic spring 300a. The compression spring 600 is used to provide contact pressure.

[0246] Of course, in other embodiments, the second base 310 of the second elastic spring 300a may also be connected to the second magnetic conductor 6200 of the moving spring assembly 3100, and the connecting portion 330 of the second elastic spring 300a may be connected to the push rod assembly 3200. The compression spring 600 is housed in the cavity formed by the second elastic spring 300a and the push rod assembly 3200. One end of the compression spring 600 abuts against the push rod assembly 3200, and the other end of the compression spring 600 abuts against the second base 310 of the second elastic spring 300a.

[0247] It should be noted that in the relays of the first to sixth embodiments described above, the short-circuit protection structure can also be of the follower type, that is, the first magnetic conductor 6100 is fixedly connected to the top wall 3221 of the contact support 3220.

[0248] Furthermore, the limiting component 300 is not limited to the second elastic spring 300a with a spring structure. For example, the limiting component 300 may also include a telescopic rod, one end of which is connected to the moving spring assembly 3100, and the other end of which is connected to the first elastic spring 100 or the push rod 3210. The telescopic rod can extend and retract along the second direction D2. In another embodiment, the limiting component 300 may also include at least two compression springs, one end of which is limited or fixedly connected to the first elastic spring 100, and the other end of which is limited or fixedly connected to the moving spring assembly 3100.

[0249] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0250] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0251] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0252] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. 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.

[0253] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: The moving spring assembly includes the moving spring leaf; A push rod assembly is used to push the moving spring assembly to move so that the moving spring contact or separation is made from the stationary contact lead-out end; A limiting component, connected to the movable spring assembly and the push rod assembly, is used to limit the rotation of the movable spring assembly relative to the push rod assembly about the axis of the push rod assembly, and the limiting component is deformable to accommodate overtravel; the limiting component is a second elastic spring; and Resilient components are used to provide contact pressure; Wherein, the second elastic spring is connected to one of the elastic component and the moving spring assembly via a second anti-rotation structure, and is connected to the other of the elastic component and the moving spring assembly via a third anti-rotation structure; or, The second elastic spring is connected to one of the push rod assembly and the moving spring assembly via a second anti-rotation structure, and is connected to the other of the push rod assembly and the moving spring assembly via a third anti-rotation structure.

2. The relay according to claim 1, characterized in that, The elastic component is a first elastic spring; The first elastic spring is connected to one of the push rod assembly and the moving spring assembly, and abuts against the other of the push rod assembly and the moving spring assembly.

3. The relay according to claim 2, characterized in that, The first elastic spring and the moving spring assembly together form a receiving cavity, and the limiting assembly is housed within the receiving cavity.

4. The relay according to claim 2, characterized in that, The relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are used to contact or separate from the pair of stationary contact leads respectively; wherein, the first direction is the arrangement direction of the pair of stationary contact leads; The first elastic spring includes a first base and a spring arm. The first base is connected to the push rod assembly through a first anti-rotation structure, and at least one spring arm is provided at both ends of the first base along the first direction. The spring arms at both ends of the first base along the first direction respectively abut against the two ends of the movable spring along the first direction.

5. The relay according to claim 4, characterized in that, The spring arm includes an extension and an abutment. The extension is connected to the first base, and the abutment is connected to the end of the extension away from the first base and abuts against the end of the movable spring along the first direction. The width of the extension connected to the end of the first base is greater than the width of the extension connected to the abutment.

6. The relay according to claim 5, characterized in that, The width of the extension decreases from the first base to the abutment portion.

7. The relay according to claim 4, characterized in that, The first anti-rotation structure includes: At least two first limiting protrusions are provided on the push rod assembly and one of the first bases; and At least two first limiting holes are provided on the push rod assembly and the other of the first base; wherein at least two first limiting protrusions are respectively inserted into at least two first limiting holes.

8. The relay according to claim 1, characterized in that, The second anti-rotation structure includes: At least two second limiting protrusions are provided on one of the elastic component and the second elastic spring; At least two second limiting holes are provided on the elastic component and the other of the second elastic spring; wherein at least two second limiting protrusions are respectively inserted into at least two second limiting holes.

9. The relay according to claim 8, characterized in that, The elastic component is connected to the push rod assembly via a first anti-rotation structure; the first anti-rotation structure includes at least two first limiting protrusions and at least two first limiting holes, the first limiting protrusions are disposed on the push rod assembly, the first limiting holes are disposed on the elastic component, and at least two first limiting protrusions are respectively inserted into at least two first limiting holes; Each of the second limiting protrusions is a ring, and one ring surrounds one of the first limiting holes; the inner ring surface of the ring is flush with the hole wall of the first limiting hole.

10. The relay according to claim 9, characterized in that, The convex ring is formed by folding the edge of the first limiting hole of the elastic component toward the moving spring assembly.

11. The relay according to claim 1, characterized in that, The relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are used to contact or separate from the pair of stationary contact leads respectively; wherein, the first direction is the arrangement direction of the pair of stationary contact leads; The second elastic spring includes a second base, a deformable portion, and a connecting portion; The second base is connected to one of the elastic component and the moving spring component through the second anti-rotation structure. The second base is provided with the deformation part and the connecting part on both sides along the first direction. The second base is connected to the connecting part through the deformation part. The connecting part is connected to the other of the elastic component and the moving spring component through the third anti-rotation structure.

12. The relay according to claim 11, characterized in that, Along the first direction, the connecting portion on one side of the second base forms a first connection with the moving spring assembly, and the connecting portion on the other side of the second base forms a second connection with the moving spring assembly. There is a first distance between the first connection and the second connection, and there is a second distance between the deformable portions on both sides of the second base. The first distance is smaller than the second distance. Wherein, the second distance is the maximum distance between the deformed portions on both sides of the second base.

13. The relay according to claim 1, characterized in that, The third anti-rotation structure includes: At least two third limiting protrusions are provided on one of the second elastic spring and the moving spring assembly; and At least two third limiting holes are provided on the second elastic spring and the other of the moving spring assembly; at least two of the third limiting protrusions are respectively inserted into at least two of the third limiting holes.

14. The relay according to claim 13, characterized in that, The third limiting hole is elliptical in shape, and the major axis of the ellipse is parallel to the first direction; the first direction is the extension direction of the moving spring.

15. The relay according to claim 1, characterized in that, The relay also includes a first magnetic conductor; The first magnetic conductor is located on the side of the moving spring assembly facing the stationary contact lead-out end, and is used to resist the electric repulsive force.

16. The relay according to claim 15, characterized in that, The moving spring assembly also includes a second magnetic conductor, which is fixedly connected to the side of the moving spring facing away from the stationary contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

17. The relay according to claim 16, characterized in that, The relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are used to contact or separate from the pair of stationary contact leads respectively; wherein, the first direction is the arrangement direction of the pair of stationary contact leads; The second elastic spring includes a second base, a deformable portion, and a connecting portion; The second base is provided with the deformable portion and the connecting portion on both sides along the first direction, and the second base is connected to the connecting portion through the deformable portion; the second base is connected to the elastic component; The connecting portions on both sides of the second base are respectively inserted by the second magnetic conductor along both sides of the first direction between the second magnetic conductor and the moving spring, and are fixedly connected to the moving spring and the second magnetic conductor.

18. The relay according to claim 1, characterized in that, The elastic component is a first elastic spring, and the thickness of the second elastic spring is less than the thickness of the first elastic spring.

19. The relay according to claim 1, characterized in that, The elastic component is a compression spring, which is used to provide contact pressure.

20. The relay according to claim 19, characterized in that, One end of the compression spring abuts against the limiting component, and the other end of the compression spring abuts against the moving spring assembly or the push rod assembly.

21. The relay according to claim 20, characterized in that, The second elastic spring includes a second base, a deformable portion, and a connecting portion; the second base is connected to the push rod assembly, and the deformable portion and the connecting portion are provided on both sides of the second base along a first direction, and the second base is connected to the connecting portion through the deformable portion; the connecting portion is connected to the moving spring assembly; wherein, the first direction is the arrangement direction of a pair of stationary contact lead-out ends; The second elastic spring and the moving spring assembly form a cavity, the compression spring is housed in the cavity, one end of the compression spring abuts against the second base, and the other end of the compression spring abuts against the moving spring assembly.

22. The relay according to claim 1, characterized in that, The relay further includes a pair of stationary contact leads, and the two ends of the moving spring along a first direction are used to contact or separate from the pair of stationary contact leads respectively; wherein, the first direction is the arrangement direction of the pair of stationary contact leads; The elastic component is limited to the push rod assembly along the first direction; and / or, the limiting component is limited to the moving spring assembly along the first direction; and / or, the limiting component is limited to the elastic component along the first direction.

23. The relay according to claim 1, characterized in that, The push rod assembly includes a contact bracket.

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