Relay

Abstract

The invention discloses a relay which comprises a movable spring assembly, a push rod assembly, a limiting assembly and an elastic assembly. The movable spring assembly comprises a movable spring; the push rod assembly is used for pushing the movable spring assembly to move so as to enable the movable spring to be in contact with or separated from the static contact leading-out end; the limiting assembly is connected with the movable spring assembly and the push rod assembly and used for limiting the movable spring assembly to rotate around the axis of the push rod assembly relative to the push rod assembly, and the limiting assembly can deform to adapt to the overtravel; the elastic assembly is used for providing contact pressure.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic control devices, and in particular, to a relay. Background Art

[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). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A high-voltage DC relay is a type of relay. A high-voltage DC relay in the prior art includes a pair of static contact leads and a moving assembly. The moving assembly includes a moving reed and a push rod assembly. The moving reed is mounted on the push rod assembly through an elastic assembly. In the overtravel stage, the moving reed contacts a pair of static contact leads, the push rod assembly continues to move upward, and the elastic assembly is compressed to form contact pressure.

[0004] However, the movable spring of the high-voltage DC relay in the prior art is prone to rotate relative to the push rod assembly, which causes the movable spring to deflect excessively, thereby causing inconsistent contact positions of the moving and static contacts, unstable contact resistance, and affecting the reliability of the relay. Summary of the invention

[0005] The embodiment of the present application provides a relay capable of preventing a movable reed from rotating relative to a push rod assembly.

[0006] The relay of the embodiment of the present application includes:

[0007] A dynamic spring assembly, including a dynamic spring leaf;

[0008] A push rod assembly, used for pushing the movable spring assembly to move so that the movable spring piece contacts or separates from the static contact lead-out end;

[0009] a limit assembly connected to the dynamic spring assembly and the push rod assembly, used to limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly, and the limit assembly can be deformed to adapt to overtravel; and

[0010] A spring component for providing contact pressure.

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

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

[0013] According to some embodiments of the present application, the first elastic spring sheet and the dynamic spring assembly together form a accommodating cavity, and the limiting assembly is accommodated in the accommodating cavity.

[0014] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0015] The first elastic spring comprises a first base and a spring arm, the first base is connected to the push rod assembly via a first anti-rotation structure, and at least one spring arm is disposed at both ends of the first base along the first direction;

[0016] The spring arms at two ends of the first base along the first direction are respectively in contact with two ends of the movable spring piece along the first direction.

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

[0018] According to some embodiments of the present application, the width of the extension portion decreases gradually from the first base portion to the abutting portion.

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

[0020] at least two first limiting protrusions, provided on one of the push rod assembly and the first base; and

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

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

[0023] According to some embodiments of the present 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 other of the elastic component and the second elastic spring sheet; wherein at least two second limiting protrusions are respectively inserted into at least two second limiting holes.

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

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

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

[0029] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0030] The second elastic spring comprises a second base portion, a deformation portion and a connecting portion;

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

[0032] According to some embodiments of the present application, along the first direction, the connecting portion on one side of the second base forms a first connection with the dynamic spring assembly, and the connecting portion on the other side of the second base forms a second connection with the dynamic spring assembly, a first distance is provided between the first connection and the second connection, and a second distance is provided between the deformation portions on both sides of the second base, and the first distance is smaller than the second distance;

[0033] The second distance is the maximum distance between the deformation parts on both sides of the second base.

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

[0035] at least two third limiting protrusions, provided on one of the second elastic spring sheet and the dynamic spring assembly; and

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

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

[0038] The first magnetic conductor is arranged on a side of the movable spring assembly facing the static contact lead-out end, and is used to resist the electromotive repulsive force.

[0039] According to some embodiments of the present application, the dynamic spring assembly further includes a second magnetic conductor, which is fixedly connected to a side of the dynamic spring piece facing away from the static 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 the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0041] The limiting component is a second elastic spring, and the second elastic spring includes a second base, a deformation portion and a connecting portion;

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

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

[0044] According to some embodiments of the present 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 smaller than the thickness of the first elastic spring.

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

[0046] According to some embodiments of the present application, one end of the compression spring abuts against the limiting assembly, and the other end of the compression spring abuts against the dynamic spring assembly or the pushing rod assembly.

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

[0048] The second elastic spring sheet comprises a second base, a deformation portion and a connection portion; the second base is connected to the push rod assembly, the deformation portion and the connection portion are provided on both sides of the second base along the first direction, and the second base is connected to the connection portion through the deformation portion; the connection portion is connected to the dynamic spring assembly; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0049] The second elastic spring sheet and the dynamic spring assembly form a chamber, the compression spring is accommodated in the chamber, one end of the compression spring abuts against the second base, and the other end of the compression spring abuts against the dynamic spring assembly.

[0050] According to some embodiments of the present application, the relay further includes a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate from the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals;

[0051] The elastic component is connected to the push rod component in a limiting manner along the first direction; and / or, the limiting component is connected to the dynamic spring component in a limiting manner along the first direction; and / or, the limiting component is connected to the elastic component in a limiting manner along the first direction.

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

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

[0054] The relay of the embodiment of the present application includes a dynamic spring assembly, a push rod, a limit assembly and an elastic assembly. The elastic assembly can provide contact pressure, and the limit assembly can limit the rotation of the dynamic spring assembly relative to the push rod assembly around the axis of the push rod assembly, thereby ensuring the consistency of the contact positions of the dynamic and static contacts, enhancing the stability of the contact resistance, and improving the reliability of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is a schematic structural diagram 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 Cross-sectional view of BB.

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

[0059] Figure 5 yes Figure 4 Schematic diagram of the decomposition.

[0060] Figure 6 yes Figure 4 The structural diagram of the contact support is omitted, in which the movable spring piece has not yet contacted the static contact lead-out terminal.

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

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

[0063] Fig. 9 yes Figure 4 Cross-sectional view of CC.

[0064] Fig.10 yes Fig. 9 A partial enlarged view of the X in the middle.

[0065] Fig.11 1 is a schematic structural diagram of a moving component and two second magnetic conductors of a relay according to a second exemplary embodiment, wherein the moving component omits the contact support.

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

[0067] Fig.13 1 is a schematic structural diagram of a moving component and two second magnetic conductors according to a third exemplary embodiment, wherein the moving component omits the contact support.

[0068] Fig.14 yes Fig.13 sectional view of .

[0069] Fig.15 is an exploded schematic diagram showing a moving assembly and two second magnetic conductors according to a fourth exemplary embodiment.

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

[0071] Fig.171 is a schematic structural diagram of a moving component and two second magnetic conductors of a relay according to a sixth exemplary embodiment, wherein the moving component omits the contact support.

[0072] Fig.18 yes Figure 4 The structural schematic diagram of the contact bracket is omitted, in which the moving spring has already contacted the static contact lead-out terminal.

[0073] The reference numerals are described as follows:

[0074] 1000. Contact container

[0075] 1001. Contact Chamber

[0076] 1002. First through hole

[0077] 1100, Insulation cover

[0078] 1110, Ceramic cover

[0079] 1111, third through hole

[0080] 1120, frame

[0081] 1200, Yoke Iron Plate

[0082] 1210, second through hole

[0083] 2000、Static contact terminal

[0084] 3000, dynamic components

[0085] 3100、Dynamic spring assembly

[0086] 3110, moving reed

[0087] 3200, Push rod assembly

[0088] 3210, Push rod

[0089] 3211, base

[0090] 3212, Rod

[0091] 3213, Card

[0092] 3214, first limit protrusion

[0093] 3220, contact bracket

[0094] 3221, top wall

[0095] 3222, side wall

[0096] 3223, card hole

[0097] 3230, Elastic Components

[0098] 4000, Magnetic Circuit

[0099] 4100、Boiler

[0100] 4200, Coil

[0101] 4300, static iron core

[0102] 4400, Moving Iron Core

[0103] 4410,Through hole

[0104] 4500, reset parts

[0105] 5000, Metal Cover

[0106] 6100, first magnetic conductor

[0107] 6200, second magnetic conductor

[0108] 6300、Connectors

[0109] 100. First elastic spring

[0110] 110. First base

[0111] 111. First limit hole

[0112] 112.Protruding ring

[0113] 112a, top surface

[0114] 112b, Inner ring

[0115] 113. Chamfer

[0116] 120. Spring arm

[0117] 121. Extension

[0118] 122. Contact part

[0119] 200. The first anti-rotation structure

[0120] 300, limit assembly

[0121] 300a, second elastic spring

[0122] 310, Second Base

[0123] 311, second limiting hole

[0124] 320, deformation part

[0125] 330, connection

[0126] 400. Second anti-rotation structure

[0127] 410, second limit protrusion

[0128] 500, Accommodation Chamber

[0129] 600, Compression spring

[0130] 700, the third anti-rotation structure

[0131] 700a, first connection

[0132] 700b, second connection

[0133] 710, third limit protrusion

[0134] 720, the third limit hole

[0135] 800, Chamber DETAILED DESCRIPTION

[0136] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0137] like Figures 1 to 3 As shown, the relay of the embodiment of the present application includes a contact container 1000 , a pair of static contact lead terminals 2000 , a moving component 3000 and a magnetic circuit part 4000 .

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

[0139] It should be noted that the contact container 1000 is a stationary component, which is used to accommodate the contact group and is mainly a housing and has a chamber. In addition, the contact container 1000 can be formed by connecting multiple components in a predetermined assembly manner.

[0140] The contact container 1000 has a contact chamber 1001 therein. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200 . The insulating cover 1100 is disposed on one side surface of the yoke plate 1200 . The insulating cover 1100 and the yoke plate 1200 together enclose the contact chamber 1001 .

[0141] The insulating cover 1100 includes a ceramic cover 1110 and a frame piece 1120. The ceramic cover 1110 is connected to the yoke iron plate 1200 through the frame piece 1120. The frame piece 1120 can be a metal piece with an annular structure, such as an iron-nickel alloy, and one end of the frame piece 1120 is connected to the opening edge of the ceramic cover 1110, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 1120 is connected to the yoke iron plate 1200, which can also be done by laser welding, brazing, resistance welding, gluing, etc. A frame piece 1120 is arranged between the ceramic cover 1110 and the yoke iron plate 1200 to facilitate the connection between the ceramic cover 1110 and the yoke iron plate 1200.

[0142] The contact container 1000 also has a pair of first through holes 1002, and the first through holes 1002 are connected to the contact chamber 1001. The first through holes 1002 are used for the static contact lead-out terminal 2000 to pass through. In the embodiment of the present application, the first through holes 1002 are opened on the ceramic cover 1110.

[0143] A pair of static contact lead-out terminals 2000 are connected to the ceramic cover 1110 of the contact container 1000, and at least a portion of each static contact lead-out terminal 2000 is located in the contact chamber 1001. One of the pair of static contact lead-out terminals 2000 serves as a terminal for current inflow, and the other serves as a terminal for current outflow.

[0144] A pair of static contact lead-out terminals 2000 are disposed in a pair of first through holes 1002 in a one-to-one correspondence, and are connected to the ceramic cover 1110 , for example, by welding.

[0145] The bottom of the static contact lead-out terminal 2000 serves as a static contact, and the static contact may be integrally or separately arranged at the bottom of the static contact lead-out terminal 2000 .

[0146] Please continue reading Figures 1 to 3 The movable assembly 3000 includes a movable spring assembly 3100, a push rod assembly 3200 and an elastic assembly 3230. The movable spring assembly 3100 is disposed in the insulating cover 1100 and is mounted on the push rod assembly 3200 through the elastic assembly 3230. Both ends of the movable spring assembly 3100 along the first direction D1 are used to contact or separate with a pair of static contact lead-out terminals 2000. The first direction D1 is the arrangement direction of the pair of static contact lead-out terminals 2000.

[0147] The dynamic spring assembly 3100 includes a dynamic spring piece 3110, and the dynamic spring piece 3110 may include a dynamic spring body and dynamic contacts arranged at both ends of the dynamic spring body. The dynamic contacts may be separate parts and connected to the dynamic spring body. Of course, the dynamic contacts may also be integrally formed on the dynamic spring body.

[0148] The number of the movable spring pieces 3110 included in the movable spring assembly 3100 is at least one, for example, one, two, three, etc. In the embodiment of the present application, the movable spring assembly 3100 includes two movable spring pieces 3110 arranged side by side. One end of the first direction D1 of the two movable spring pieces 3110 is used to contact or separate with the static contact of one of the static contact lead-out terminals 2000, and the other end of the first direction D1 of the two movable spring pieces 3110 is used to contact or separate with the static contact of the other static contact lead-out terminal 2000.

[0149] The movable spring assembly 3100 may further include a second magnetic conductor 6200, which is fixedly connected to a side of the movable spring piece 3110 that faces away from the static contact lead-out terminal 2000. The function of the second magnetic conductor 6200 will be described below.

[0150] The number of the movable spring pieces 3110 and the number of the second magnetizers 6200 included in the movable spring assembly 3100 are corresponding. Specifically, when the number of the movable spring piece 3110 is one, the number of the second magnetizer 6200 is also one; when the number of the movable spring pieces 3110 is multiple (including two), the number of the second magnetizers 6200 is also multiple. The multiple second magnetizers 6200 are fixedly connected to the side of the multiple movable spring pieces 3110 facing away from the static contact lead-out terminal 2000 in a one-to-one correspondence.

[0151] Of course, in other embodiments, when the number of the movable spring piece 3110 is one, the number of the second magnet 6200 may also be multiple. For example, at least one opening is provided in the middle of the movable spring piece 3110, and two adjacent second magnets 6200 among the multiple second magnets 6200 are inserted into one opening.

[0152] like Figure 4 and Figure 5 As shown, the moving direction of the movable spring piece 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 bracket 3220 and an elastic assembly 3230. The contact bracket 3220 includes a top wall 3221 and two side walls 3222, and the two side walls 3222 are respectively connected to the two side edges of the top wall 3221 along the third direction D3, that is, forming an inverted U-shaped bracket. The movable spring assembly 3100 is installed in the contact bracket 3220 through the elastic assembly 3230. The upper end of the push rod 3210 is connected to the bottom ends of the two side walls 3222 of the contact bracket 3220.

[0153] A clamping hole 3223 is provided at the bottom end of each side wall 3222 of the contact support 3220. The push rod 3210 includes a base 3211 and a rod portion 3212, and the base 3211 is connected to one axial end of the rod portion 3212. Clamps 3213 are provided on both sides of the base 3211, and the two clamps 3213 are respectively clamped into the two clamping holes 3223 of the contact support 3220, so as to fix the base 3211 and the contact support 3220. The elastic component 3230 is provided between the dynamic spring component 3100 and the base 3211, and is used to apply an elastic force to the dynamic spring component 3100 to move toward the top wall 3221 to provide contact pressure. In the embodiment of the present application, one end of the elastic component 3230 abuts against the dynamic spring component 3100, and the other end of the elastic component 3230 is installed on the base 3211.

[0154] Of course, in other embodiments, the contact holder 3220 may also be other structures, which are not listed here one by one.

[0155] When there are multiple movable spring pieces 3110 , the multiple movable spring pieces 3110 are arranged side by side along the third direction D3 .

[0156] Please return to Figures 1 to 3 The yoke plate 1200 has a second through hole 1210, which penetrates two opposite sides of the yoke plate 1200 along the thickness direction of the yoke plate 1200, and the second through hole 1210 is connected to the contact chamber 1001 of the contact container 1000. The rod portion 3212 is movably disposed in the second through hole 1210 along the axial direction. The base 3211 at one axial end of the rod portion 3212 is disposed in the contact chamber 1001.

[0157] The relay further 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 enclose a chamber for accommodating the static iron core 4300 and the moving iron core 4400 of the magnetic circuit part 4000.

[0158] The magnetic circuit part 4000 includes a coil frame 4100, a coil 4200, a static iron core 4300, a moving iron core 4400 and a reset member 4500. The coil frame 4100 is in the shape of a hollow cylinder and is formed of an insulating material. The metal cover 5000 is inserted into the coil frame 4100. The coil 4200 surrounds the coil frame 4100. The static iron core 4300 is fixedly arranged in the metal cover 5000, and part of the static iron core 4300 extends into the second through hole 1210. The static iron core 4300 has a through hole 4410, which is arranged corresponding to the position of the second through hole 1210, for the rod portion 3212 to pass therethrough. The moving iron core 4400 is movably disposed in the metal cover 5000 and is disposed opposite to the static iron core 4300 along the axial direction of the rod 3212. The moving iron core 4400 is connected to the rod 3212 and is used to be attracted by the static iron core 4300 when the coil 4200 is energized. The moving iron core 4400 and the rod 3212 can be connected by screwing, riveting, welding or other methods.

[0159] The reset member 4500 is located inside the metal cover 5000 and is disposed between the static iron core 4300 and the moving iron core 4400, and is used to reset the moving iron core 4400 when the coil 4200 is powered off. The reset member 4500 can be a spring and is sleeved on the outside of the rod 3212.

[0160] It should be noted that when the coil 4200 is energized, the magnetic circuit portion 4000 can drive the rod portion 3212 to push the push rod assembly 3200 to move upward. When the moving spring 3110 contacts the static contact lead-out terminal 2000, the moving spring 3110 is stopped by the static contact lead-out terminal 2000, while the rod portion 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 of the embodiment of the present application further includes a first magnetic conductor 6100. The movable reed 3110 has a first side and a second side that are arranged opposite to each other along the second direction D2. The first side faces the static contact lead-out terminal 2000, and the second side faces away from the static contact lead-out terminal 2000. The first magnetic conductor 6100 is arranged on the first side of the movable reed 3110 and is arranged in the contact chamber 1001.

[0162] When the movable spring assembly 3100 only includes the movable spring piece 3110 but does not include the second magnet 6200, after the movable spring piece 3110 is energized, the first magnet 6100 is magnetized, thereby forming a suction force on the movable spring piece 3110 in the direction of contact closure, and the suction force can resist the electromotive repulsion between the movable spring piece 3110 and the static contact lead-out terminal 2000 due to the short-circuit current, thereby preventing the movable spring piece 3110 and the static contact lead-out terminal 2000 from bouncing apart, thereby achieving the purpose of resisting short circuit.

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

[0164] When both ends of the moving reed 3110 contact a pair of stationary contact lead-out terminals 2000, the second magnetizer 6200 moving together with the moving reed 3110 approaches or contacts the first magnetizer 6100, thereby forming a magnetic conductive loop around the moving reed 3110 between the first magnetizer 6100 and the second magnetizer 6200. When a short-circuit current passes through the moving reed 3110, a magnetic attraction force in the contact pressure direction is generated between the first magnetizer 6100 and the second magnetizer 6200, and the magnetic attraction force can resist the electromotive repulsion force generated by the short-circuit current between the moving reed 3110 and the stationary contact lead-out terminals 2000, thereby ensuring that the moving reed 3110 and the stationary contact lead-out terminals 2000 do not bounce apart.

[0165] It is understandable that the second magnetic conductor 6200 and the movable spring piece 3110 can be fixedly connected by riveting, but it is not limited thereto.

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

[0167] In which, when the dynamic spring assembly 3100 includes multiple dynamic spring pieces 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 dynamic spring pieces 3110, and the multiple first magnetic conductors 6100 are respectively located on one side of the multiple dynamic spring pieces 3110 facing the static contact lead-out end 2000.

[0168] Of course, in other embodiments, when the dynamic spring assembly 3100 includes a plurality of dynamic spring pieces 3110 arranged side by side, the number of the first magnetic conductor 6100 may be one, and the first magnetic conductor 6100 spans across the plurality of dynamic spring pieces 3110 in the third direction D3.

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

[0170] It can be understood that the first magnetic conductor 6100 is connected to the contact container 1000 through the connecting piece 6300, so that the magnetic attraction force for resisting short circuit 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 coil of the relay and the volume of the relay, and improving the short circuit resistance.

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

[0172] In the embodiment of the present application, a third through hole 1111 is formed on the top wall of the ceramic cover 1110 of the contact container 1000, and the connector 6300 is passed through the third through hole 1111. The connection between the axial end of the connector 6300 and the ceramic cover 1110 can be implemented in a variety of ways, such as welding, riveting, screwing, bonding, etc. The connection between the other end of the connector 6300 and the first magnetic conductor 6100 can also be implemented in a variety of ways, such as welding, riveting, screwing, bonding, clamping, etc.

[0173] It can be understood that when one end of the connector 6300 is connected to the ceramic cover 1110 by welding, by welding the connector 6300 to the top wall of the ceramic cover 1110, the metallization layer can be processed only on the periphery of 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 facilitates processing and simplifies the processing steps.

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

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

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

[0177] In addition, the first magnetic conductor 6100 is connected to the rod-shaped connecting member 6300, so that a variety of connection methods can be used between the first magnetic conductor 6100 and the connecting member 6300, such as riveting, laser welding, clamping, gluing, etc., which enriches the connection methods.

[0178] As an example, the connecting member 6300 is a solid rod. In this way, the connecting member 6300 and the first magnetic conductor 6100 can be connected by riveting, making the connection more reliable. In addition, the solid rod has a higher support strength and is less prone to deformation.

[0179] like Figure 5 and Figure 6 , Fig.18 As shown, the relay also includes a limit assembly 300, which is connected to the dynamic spring assembly 3100 and the push rod assembly 3200, and is used to limit the dynamic spring assembly 3100 from rotating relative to the push rod assembly 3200 around the axis of the push rod assembly 3200, and the limit assembly 300 can be deformed to adapt to overtravel.

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

[0181] The relay of the embodiment of the present application includes a dynamic spring assembly 3100, a push rod 3210, a limit assembly 300 and an elastic assembly 3230. The elastic assembly 3230 can provide contact pressure, and the limit assembly 300 can limit the rotation of the dynamic spring assembly 3100 relative to the push rod 3210, thereby ensuring the consistency of the contact positions of the dynamic and static contacts, enhancing the stability of the contact resistance, and improving the reliability of the relay.

[0182] It should be noted that, in the embodiment of the present application, the limit assembly 300 can limit the dynamic spring assembly 3100 to rotate about an axis perpendicular to the plane where the dynamic spring assembly 3100 is located. That is, the limit assembly 300 can limit the dynamic spring assembly 3100 to rotate around 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 a first elastic spring 100. As an example, the first elastic spring 100 is a sheet structure made of a metal material and is formed by bending.

[0184] The first elastic spring 100 is mounted on the base 3211 of the push rod 3210 through the first anti-rotation structure 200 , and abuts against a 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 disposed 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 in the first direction D1 are respectively abutted against the two ends of the movable spring assembly 3100 in the first direction D1.

[0186] In the embodiment of the present application, the spring arms 120 at two ends of the first base portion 110 along the first direction D1 are respectively in contact with two ends of the movable spring piece 3110 .

[0187] It can be understood that since the spring arms 120 at both ends of the first elastic spring 100 are supported on both ends of the movable spring 3110, the movable spring 3110 and the second magnet 6200 can be stably installed on the push rod 3210, avoiding the shaking of the movable spring 3110 and the second magnet 6200, and further avoiding the problem of uneven contact pressure due to the shaking of the movable spring 3110 and the problem of affecting the short-circuit resistance due to the shaking of the second magnet 6200.

[0188] The first elastic spring 100 and the dynamic spring assembly 3100 together form a receiving chamber 500, and the limiting assembly 300 is received in the receiving chamber 500. By arranging the limiting assembly 300 in the receiving chamber 500, the structure of the dynamic assembly 3000 can be made more compact, which is conducive to miniaturization of the relay.

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

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

[0191] It can be seen that in the embodiment of the present application, each movable spring piece 3110 corresponds to a pair of spring arms 120, so that when the contact gaps of the plurality of movable spring pieces 3110 and the static contact lead-out ends are inconsistent, the plurality of movable spring pieces 3110 will not interfere with each other.

[0192] like Figure 7 As shown, each spring arm 120 includes an extension portion 121 and a contact portion 122, wherein the extension portion 121 is connected to the first base portion 110, and the contact portion 122 is connected to one end of the extension portion 121 away from the first base portion 110, and contacts the end of the movable spring piece 3110 in the first direction D1; wherein the width of the end of the extension portion 121 connected to the first base portion 110 is greater than the width of the end of the extension portion 121 connected to the contact portion 122. Furthermore, the width of the extension portion 121 decreases from the first base portion 110 to the contact portion 122.

[0193] In the embodiment of the present application, the first elastic spring 100 includes a first base 110 and a spring arm 120. Since the width of the extension portion 121 of the spring arm 120 decreases from the first base 110 to the abutment portion 122, that is, the width of the extension portion 121 gradually narrows, the structural strength of the spring arm 120 can be reduced to make the spring arm 120 softer; in the initial stage of overtravel, after the movable spring 3110 and the static contact lead-out terminal 2000 just come into contact, the spring arm 120 will not provide excessive elastic force to avoid mismatching of the suction and reaction forces; in addition, just because the width of the extension portion 121 gradually narrows, the weight of the first elastic spring 100 can be slightly reduced; in addition, since the width of the extension portion 121 decreases, the spring arm 120 can reserve enough space in the third direction D3 for setting other structures.

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

[0195] In addition, the root of the extension 121 is wide, and the mechanical strength is better, which is conducive to improving the fatigue resistance of the first elastic spring 100. The extension 121 is set to gradually narrow, so that the stiffness coefficient of the first elastic spring 100 changes nonlinearly, reducing the elastic reaction force in the initial stage, and avoiding the mismatch of the suction reaction force at the beginning of the overtravel. In addition, as the first elastic spring 100 is gradually compressed, its progress coefficient becomes larger and larger, ensuring that it can provide a sufficiently large contact pressure.

[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 protrusion 3214 is provided on one of the first base 110 and the push rod assembly 3200, and the first limiting hole 111 is provided 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 an anti-rotation effect.

[0197] In the embodiment of the present application, at least two first limiting protrusions 3214 are protruded from a surface of the push rod 3210 facing the movable spring assembly 3100 ; and at least two first limiting holes 111 are disposed on the first base portion 110 .

[0198] In the embodiment of the present 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 are convexly disposed on a side surface of the base 3211 facing the dynamic 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 the embodiment of the present application includes at least two first limiting protrusions 3214 and a first limiting hole 111 that cooperate with each other, 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, and the shape of the first limiting hole 111 is a non-circular shape such as a rectangle, an ellipse, or a triangle. The first limiting protrusion 3214 is adapted to the shape of the first limiting hole 111, and is inserted into the first limiting hole 111, which can prevent the push rod 3210 and the first elastic spring 100 from rotating relative to each other.

[0201] It can be understood that the first anti-rotation structure 200 is used to limit the first elastic spring 100 from rotating relative to the pushing rod assembly 3200 around the axis of the pushing rod assembly 3200 .

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

[0203] In another embodiment, the first anti-rotation structure 200 may further include a fastener, which fastens 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 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 dynamic spring component 3100 through the second anti-rotation structure 400, and is connected to the other of the elastic component 3230 and the dynamic spring component 3100 through the third anti-rotation structure 700.

[0205] In the embodiment of the present application, the second elastic spring 300 a is connected to the first base 110 through the second anti-rotation structure 400 , and is connected to the dynamic 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 the embodiment of the present application, each second limiting protrusion 410 is a convex ring 112. At least two convex rings 112 are provided on a side surface of the first base 110 facing the dynamic spring assembly 3100, and one convex ring 112 surrounds one first limiting hole 111; the inner annular surface 112b of the convex ring 112 is flush with the hole wall of the first limiting hole 111; at least two second limiting holes 311 are provided on the second elastic spring sheet 300a; wherein, at least two convex rings 112 are respectively inserted into at least two second limiting holes 311.

[0208] In the embodiment of the present 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 the embodiment of the present application includes at least two mutually matching protruding rings 112 and the 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 second limiting hole 311 is in a non-circular shape such as a rectangle, an ellipse, or a triangle. The convex ring 112 is inserted into the second limiting hole 311 to prevent the second elastic spring 300a and the first elastic spring 100 from rotating relative to each other.

[0211] It can be understood that the second anti-rotation structure 400 is used to limit the second elastic reed 300 a from rotating relative to the first elastic reed 100 around 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 direction close to the dynamic spring assembly 3100. In the embodiment of the present application, 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 when the first base 110 and the push rod 3210 are assembled, and the generation of scraps can be prevented. At the same time, the convex ring 112 cooperates with the second limiting hole 311 of the second elastic spring 300a, and 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, and reduce the wear between the first limiting protrusion 3214 and the first base 110 during movement.

[0213] like Fig.10 As shown, the convex ring 112 is provided with 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 the chamfer 113 at the connection between the top surface 112a and the inner ring surface 112b, burrs generated during the molding process of the convex ring 112 can be eliminated, and scraps can be further prevented from being generated between the first limiting protrusion 3214 and the inner ring surface 112b of the convex ring 112.

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

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

[0216] Please return to Figure 6 and Figure 8 As shown, the second elastic spring 300a is arranged on the second side of the dynamic 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 installed on one of the first elastic spring 100 and the dynamic spring assembly 3100 through a second anti-rotation structure 400. The second base 310 is provided with 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 through the deformation portion 320; the connecting portion 330 is connected to the other of the first elastic spring 100 and the dynamic spring assembly 3100 through a third anti-rotation structure 700.

[0217] In the embodiment of the present application, the connecting portion 330 of the second elastic spring piece 300a is connected to the dynamic spring assembly 3100 through the third anti-rotation structure 700, and the second base 310 is installed on the first base 110 of the first elastic spring piece 100 through the second anti-rotation structure 400, so that the second elastic spring piece 300a can position the dynamic spring assembly 3100 in the second direction D2, and limit the dynamic spring assembly 3100 in the first direction D1 and the third direction D3, so that the second elastic spring piece 300a can limit the dynamic spring assembly 3100, avoid the dynamic spring assembly 3100 from rotating relative to the push rod 3210, and thus avoid the dynamic and static contacts from being unable to align and affecting the reliability of the relay. In addition, the dynamic spring assembly 3100 is limited by the second elastic spring piece 300a, avoiding the ripple sound generated by the contact between the dynamic spring assembly 3100 and the contact bracket when the dynamic spring assembly 3100 is energized.

[0218] In addition, since the dynamic spring assembly 3100 does not rotate, it can reduce or even prevent the dynamic spring assembly 3100 from contacting the side wall of the contact bracket 3220 to a certain extent, thereby avoiding the generation of large corrugation sound (metal friction noise). In addition, it avoids the increase in the number of frictions and the aggravation of the wear, which leads to an increase in the deflection force and friction resistance. Furthermore, it can also reduce the metal particles generated by the mutual friction between the dynamic spring assembly 3100 and the contact bracket 3220, reduce the probability of metal particles falling on the contact surface of the contact point, and thus reduce the quality risk of increasing the contact resistance or even non-conduction.

[0219] In the over-travel process, the push rod 3210 continues to move toward the dynamic spring assembly 3100. At this time, the deformation portion 320 is compressed and deformed, which does not affect the over-travel.

[0220] In addition, since the first elastic spring 100 is used to provide contact pressure, and the second elastic spring 300a does not need to provide contact pressure, the thickness of the second elastic spring 300a can be smaller than the thickness of the first elastic spring 100, thereby reducing the stress at the bend of the second elastic spring 300a and avoiding fatigue fracture of the second elastic spring 300a.

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

[0222] It can be seen that in the embodiment of the present application, each movable spring piece 3110 corresponds to a pair of connecting parts 330, so that when the contact gaps of the plurality of movable spring pieces 3110 and the static contact lead-out ends are inconsistent, the plurality of movable spring pieces 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 dynamic spring assembly 3100, and the connecting portion 330 on the other side of the second base 310 forms a second connection 700b with the dynamic spring assembly 3100. There is a first distance L1 between the first connection 700a and the second connection 700b, and there is a second distance L2 between the deformation portions 320 on both sides of the second base 310, and the first distance L1 is smaller than the second distance L2. The second distance L2 is the maximum distance between the deformation portions 320 on both sides of the second base 310.

[0224] In the embodiment of the present application, 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 dynamic spring assembly 3100, so that the deformation parts 320 on both sides of the second base 310 can be deformed in a direction away from each other (the deformation parts 320 on both sides expand outward), thereby preventing the second elastic spring 300a from being stuck and unable to provide contact pressure. In addition, since the first distance L1 is smaller than the second distance L2, the deformation parts 320 on both sides of the second base 310 are equivalent to bending in a direction close to each other as a whole, which can reduce the overall volume of the second elastic spring 300a and reduce the space occupancy rate.

[0225] Of course, in other embodiments, when the internal space of the relay is large enough, the first distance L1 may 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 arranged on one of the second elastic spring piece 300a and the dynamic spring assembly 3100, and the at least two third limiting holes 720 are arranged on the other of the second elastic spring piece 300a and the dynamic 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 the embodiment of the present 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 parts 330, and the four third limiting protrusions 710 are provided on the two second magnetic conductors 6200, and each second magnetic conductor 6200 is provided with two third limiting protrusions 710.

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

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

[0230] In one embodiment, the elastic component 3230 is connected to the push rod component 3200 in a limited position along the first direction D1; and / or, the limit component 300 is connected to the dynamic spring component 3100 in a limited position along the first direction D1; and / or, the limit component 300 is connected to the elastic component 3230 in a limited position along the first direction D1. In this way, the amplitude of the dynamic spring component 3100 moving relative to the push rod component 3200 in the first direction D1 can be reduced, thereby improving the overall impact resistance of the relay.

[0231] Preferably, the elastic component 3230 is connected to the push rod component 3200 in a limited position along the first direction D1, and the limit component 300 is connected to the dynamic spring component 3100 in a limited position along the first direction D1, and the limit component 300 is connected to the elastic component 3230 in a limited position along the first direction D1. In this way, when the relay encounters a large impact, there will be no displacement between the moving contact and the static contact, avoiding unstable contact resistance.

[0232] In another embodiment, the third limiting hole 720 is elliptical in shape, and the major axis of the ellipse is parallel to the first direction D1. By designing the third limiting hole 720 to be elliptical, before the moving and static contacts come into contact, the third limiting protrusion 710 is limited to the outer edge of the third limiting hole 720, so that the dynamic spring assembly 3100 does not move. After the moving and static contacts come into contact, the second elastic spring 300a is compressed, and the connecting parts and the deforming parts on both sides of the second base 310 have a tendency to move to both sides. At this time, the elliptical third limiting hole 720 can provide space for the connecting part 330 to move, so as to release the stress generated inside the second elastic spring 300a after being compressed, and prevent the internal stress of the second elastic spring 300a from being too concentrated and affecting its service life.

[0233] In addition, it is worth noting that since the distance that the connecting portion 330 moves within the ellipse is small, it does not affect the relative position of the moving contact and the static contact.

[0234] It can be understood 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 Fig.11 and Fig.12 As shown, the relay of the second embodiment has a substantially similar structure in basic structure to 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 is not repeated. In addition, the same reference numerals are given to the same structure as the structure of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are 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 dynamic spring assembly 3100 through the second anti-rotation structure 400. The deformation portion 320 and the connecting portion 330 are provided on both sides of the first direction D1 of the second base 310, the second base 310 is connected to the connecting portion 330 through the deformation portion 320, and the connecting portion 330 is connected to the first base 110 of the first elastic spring 100 through the third anti-rotation structure 700.

[0237] In the embodiment of the present application, the second base 310 is connected to the second magnetic conductor 6200 through 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 Fig.13 and Fig.14 As shown, the relay of the third embodiment has a substantially similar structure in basic structure to 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 is not repeated. In addition, the same reference symbols are given to the same structures as those of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are 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 through the second anti-rotation structure 400. The connecting parts 330 on both sides of the second base 310 are respectively inserted between the second magnetic conductor 6200 and the movable spring 3110 from both sides of the second magnetic conductor 6200 along the first direction D1, and are fixedly connected to the movable spring 3110 and the second magnetic conductor 6200.

[0240] like Fig.15 As shown, the relay of the fourth embodiment has a substantially similar structure in basic structure to the relay of the first embodiment. Therefore, in the following description of the relay of the fourth embodiment, the structure already described in the first embodiment is not repeated. In addition, the same reference symbols are given to the same structures as those of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

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

[0242] like Fig.16 As shown, the relay of the fifth embodiment has a substantially similar structure in basic structure to 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 is not repeated. In addition, the same reference numerals are given to the same structure as the structure of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

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

[0244] like Fig.17 As shown, the relay of the sixth embodiment has a substantially similar structure in basic structure to 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 is not repeated. In addition, the same reference symbols are given to the same structures as those of the relay described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the relay of the first embodiment are mainly described.

[0245] In the sixth embodiment, the elastic component 3230 is a compression spring 600, which is disposed in a chamber 800 surrounded by the second elastic spring 300a and the second magnetic conductor 6200, and one end of the compression spring 600 abuts against the second magnetic conductor 6200, and the other end of the compression spring 600 abuts 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 can also be connected to the second magnetic conductor 6200 of the movable spring assembly 3100, and the connecting portion 330 of the second elastic spring 300a is connected to the push rod assembly 3200. The compression spring 600 is accommodated in a chamber surrounded 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 in the first to sixth embodiments, the anti-short circuit structure may also be of a follow-up type, that is, the first magnetic conductor 6100 is fixedly connected to the top wall 3221 of the contact bracket 3220 .

[0248] In addition, the limiting assembly 300 is not limited to the second elastic spring 300a with a spring structure. For example, the limiting assembly 300 may also include a telescopic rod, one end of which is connected to the dynamic spring assembly 3100, and the other end of the telescopic rod is connected to the first elastic spring 100 or the push rod 3210, and the telescopic rod can be extended and retracted along the second direction D2; in another embodiment, the limiting assembly 300 may also include at least two compression springs, one end of each compression spring is limitedly connected or fixedly connected to the first elastic spring 100, and the other end of each compression spring is limitedly connected or fixedly connected to the dynamic spring assembly 3100.

[0249] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0250] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0251] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0252] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0253] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: A dynamic spring assembly, including a dynamic spring leaf; A push rod assembly, used for pushing the movable spring assembly to move so that the movable spring piece contacts or separates from the static contact lead-out end; A limit assembly connected to the dynamic spring assembly and the push rod assembly, used to limit the dynamic spring assembly from rotating relative to the push rod assembly around the axis of the push rod assembly, and the limit assembly can be deformed to adapt to overtravel; as well as A spring component for providing contact pressure.

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 dynamic spring assembly, and abuts against the other of the push rod assembly and the dynamic spring assembly.

3. The relay according to claim 2, characterized in that: The first elastic spring sheet and the dynamic spring assembly together form a receiving cavity, and the limiting assembly is accommodated in the receiving cavity.

4. The relay according to claim 2, characterized in that: The relay further comprises a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate with the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The first elastic spring comprises a first base and a spring arm, the first base is connected to the push rod assembly via a first anti-rotation structure, and at least one spring arm is disposed at both ends of the first base along the first direction; The spring arms at two ends of the first base along the first direction are respectively in contact with two ends of the movable spring piece along the first direction.

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

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

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

8. The relay according to claim 1, characterized in that: The limiting component is a second elastic spring leaf, which is connected to one of the elastic component and the dynamic spring component through a second anti-rotation structure, and is connected to the other of the elastic component and the dynamic spring component through a third anti-rotation structure.

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

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

11. The relay according to claim 10, characterized in that: The convex ring is formed by folding the edge of the first limiting hole of the elastic component toward the direction close to the dynamic spring component.

12. The relay according to claim 8, characterized in that The relay further comprises a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate with the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The second elastic spring comprises a second base portion, a deformation portion and a connecting portion; The second base is connected to one of the elastic component and the dynamic spring component through the second anti-rotation structure, the deformation part and the connecting part are provided on both sides of the second base along the first direction, and 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 dynamic spring component through the third anti-rotation structure.

13. The relay according to claim 12, characterized in that: Along the first direction, the connecting portion on one side of the second base forms a first connection with the dynamic spring assembly, and the connecting portion on the other side of the second base forms a second connection with the dynamic spring assembly, a first distance exists between the first connection and the second connection, and a second distance exists between the deformation portions on both sides of the second base, and the first distance is smaller than the second distance; The second distance is the maximum distance between the deformation parts on both sides of the second base.

14. The relay according to claim 8, characterized in that The third anti-rotation structure comprises: at least two third limiting protrusions, provided on one of the second elastic spring sheet and the dynamic spring assembly; and At least two limiting holes are provided on the second elastic spring sheet and the other of the dynamic spring assembly; and at least two third limiting protrusions are respectively inserted into the at least two limiting holes.

15. The relay according to claim 1, characterized in that The relay further includes a first magnetic conductor; The first magnetic conductor is arranged on a side of the movable spring assembly facing the static contact lead-out end, and is used to resist the electromotive repulsive force.

16. The relay according to claim 15, characterized in that The movable spring assembly further comprises a second magnetic conductor, which is fixedly connected to a side of the movable spring piece facing away from the static contact lead-out end; the second magnetic conductor is used to form a magnetic conductive circuit with the first magnetic conductor.

17. The relay according to claim 16, characterized in that: The relay further comprises a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate with the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The limiting component is a second elastic spring, and the second elastic spring includes a second base, a deformation portion and a connecting portion; The second base is provided with the deformation part and the connection part on both sides along the first direction, and the second base is connected to the connection part through the deformation part; the second base is connected to the elastic component; The connecting parts on both sides of the second base are respectively inserted between the second magnetic conductor and the movable spring piece by the second magnetic conductor along both sides of the first direction, and are fixedly connected to the movable spring piece and the second magnetic conductor.

18. The relay according to claim 1, characterized in that 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 smaller 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, and the compression spring 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 assembly, and the other end of the compression spring abuts against the dynamic spring assembly or the pushing rod assembly.

21. The relay according to claim 20, characterized in that The limiting component is a second elastic spring; The second elastic spring sheet comprises a second base, a deformation portion and a connection portion; the second base is connected to the push rod assembly, the deformation portion and the connection portion are provided on both sides of the second base along the first direction, and the second base is connected to the connection portion through the deformation portion; the connection portion is connected to the dynamic spring assembly; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The second elastic spring sheet and the dynamic spring assembly form a chamber, the compression spring is accommodated in the chamber, one end of the compression spring abuts against the second base, and the other end of the compression spring abuts against the dynamic spring assembly.

22. The relay according to claim 1, characterized in that The relay further comprises a pair of static contact lead-out terminals, and the two ends of the movable reed along the first direction are used to contact or separate with the pair of static contact lead-out terminals respectively; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; The elastic component is connected to the push rod component in a limiting manner along the first direction; and / or, the limiting component is connected to the dynamic spring component in a limiting manner along the first direction; and / or, the limiting component is connected to the elastic component in a limiting manner along the first direction.

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

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