Relay

Abstract

A relay, comprising a pair of static contact lead-out terminals, a plurality of movable spring sheets, and a plurality of spacers, wherein two ends of each movable spring sheet in a first direction are respectively in contact with or separated from the pair of static contact lead-out terminals; the first direction is the arrangement direction of the pair of static contact lead-out terminals; the movement direction of the movable spring sheets is defined as a second direction; the number of the plurality of spacers corresponds to the number of the plurality of movable spring sheets; each spacer comprises a top portion and two side portions, the top portion being located on the side of the corresponding movable spring sheet that faces the static contact lead-out terminal, and the two side portions being respectively connected to the two sides of the top portion in a third direction and extending from the top portion in the direction away from the static contact lead-out terminal; and the two side portions of the spacer are respectively located on the two sides of the same movable spring sheet in the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

Description

relay

[0001] This disclosure claims priority to Chinese patent application No. 202311187662.X filed on September 14, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of electronic control devices, and in particular to a relay. Background Art

[0003] A relay is an electronic control device with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0004] As one type of relay, a high-voltage DC relay includes a pair of static contact terminals, a moving reed, an elastic member, and a push rod assembly. The moving reed is mounted on the push rod assembly via the elastic member. The movement of the push rod assembly drives the moving reed to move, thereby achieving contact or separation between the moving reed and the pair of static contact terminals.

[0005] Relays in the prior art typically use multiple, side-by-side movable springs to reduce the electromotive force between the moving and static contacts. However, during the contact opening or closing process, individual movable springs can move, interfering with other movable springs and affecting contact reliability.

[0006] Summary of the Invention

[0007] The embodiment of the present disclosure provides a relay to solve the problem in the prior art that a movable reed is prone to movement.

[0008] The relay according to the embodiment of the present disclosure includes:

[0009] A pair of static contact terminals;

[0010] a plurality of movable springs, each of which has two ends along a first direction respectively contacting or separating with a pair of the static contact lead-out terminals; wherein the first direction is the arrangement direction of the pair of the static contact lead-out terminals; and the movement direction of the movable spring is defined as a second direction; and

[0011] A plurality of spacers corresponding to the number of the plurality of movable springs; each of the spacers includes a top and two side portions, the top being located on a side of the movable spring facing the static contact lead-out end, the two side portions being respectively connected to two sides of the top along a third direction and extending from the top in a direction away from the static contact lead-out end; the two side portions of the spacer are respectively located on two sides of the same movable spring along the third direction; wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] According to some embodiments of the present disclosure, two adjacent isolation members are connected into an integral structure through the two side portions.

[0013] According to some embodiments of the present disclosure, two adjacent isolation members are split structures and do not contact each other.

[0014] According to some embodiments of the present disclosure, the isolation member is made of soft magnetic material.

[0015] According to some embodiments of the present disclosure, the relay further includes a plurality of second magnetic conductors, the plurality of second magnetic conductors corresponding to the number of the plurality of movable reeds, and respectively fixedly connected to a side of the plurality of movable reeds facing away from the static contact lead-out end;

[0016] Wherein, along the second direction, the isolation members on both sides of the movable spring and the second magnetic conductor are used to form a magnetic conductive circuit.

[0017] According to some embodiments of the present disclosure, the relay further includes a push rod assembly and an elastic assembly, wherein the elastic assembly is connected to the plurality of movable reeds and the push rod assembly, and the elastic assembly is used to provide contact pressure to the plurality of movable reeds;

[0018] A plurality of the isolators are mounted on the push rod assembly.

[0019] According to some embodiments of the present disclosure, the push rod assembly includes:

[0020] Push rod;

[0021] The contact support comprises a top wall and two side walls, one end of the two side walls being respectively connected to two sides of the top wall along the third direction, and the other end of the two side walls being respectively connected to one axial end of the push rod; a plurality of the isolating members being fixedly connected to the top wall;

[0022] Wherein, a plurality of the movable spring pieces are installed in the space enclosed by the contact brackets through the elastic components, and the top wall is located on the side of the movable spring piece facing the static contact lead-out end.

[0023] According to some embodiments of the present disclosure, the relay further includes an insulating cover, wherein the insulating cover is provided with a pair of first through holes, and the pair of static contact lead ends are respectively provided in the pair of first through holes;

[0024] The plurality of isolating members are disposed in the insulating cover and are fixed relative to the insulating cover.

[0025] According to some embodiments of the present disclosure, the relay further includes a plurality of connectors, and the number of the plurality of connectors corresponds to the number of the plurality of isolation members;

[0026] One ends of the plurality of connectors are connected to the insulating cover, and the other ends of the plurality of connectors are respectively connected to the plurality of isolation members.

[0027] According to some embodiments of the present disclosure, the insulating cover is further provided with a plurality of third through holes, the top of each of the isolating members is provided with a connecting hole, one end of the plurality of connecting members respectively passes through the plurality of third through holes, and the other end of the plurality of connecting members respectively passes through the plurality of connecting holes.

[0028] According to some embodiments of the present disclosure, the relay further includes a first magnetic conductor, wherein the first magnetic conductor is provided with a plurality of through holes;

[0029] The plurality of connecting members are respectively passed through the plurality of through holes, and the first magnetic conductor is arranged on a side of the plurality of movable spring pieces facing the static contact lead-out end, and abuts against a side surface of the plurality of tops facing away from the movable spring pieces.

[0030] According to some embodiments of the present disclosure, a step structure is further provided on the periphery of each connecting member, and the periphery of the hole of the through hole away from the end of the isolating member abuts against the step structure.

[0031] According to some embodiments of the present disclosure, the relay further includes a plurality of second magnetic conductors, the plurality of second magnetic conductors corresponding to the number of the plurality of movable springs, and respectively fixedly connected to the side of the plurality of movable springs facing away from the static contact lead-out end; each second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

[0032] According to some embodiments of the present disclosure, the isolation member is made of soft magnetic material.

[0033] According to some embodiments of the present disclosure, the relay further includes a plurality of second magnetic conductors, the number of the plurality of second magnetic conductors corresponds to the number of the plurality of movable springs, and the plurality of second magnetic conductors are respectively fixedly connected to a side of the plurality of movable springs facing away from the static contact lead-out ends.

[0034] According to some embodiments of the present disclosure, the insulating cover includes:

[0035] A ceramic cover is provided with a pair of the first through holes, and a plurality of the spacers are fixedly installed in the ceramic cover; and

[0036] The frame piece is annular and connected to the opening edge of the ceramic cover.

[0037] According to some embodiments of the present disclosure, each of the isolation members has two stop surfaces disposed opposite to each other along the first direction;

[0038] Both ends of each movable spring are provided with a stopper, and the stopper is protruding from the surface of the movable spring facing the static contact lead-out end;

[0039] The two stopping surfaces of each isolating member are used to respectively stop the stopping portions at both ends of the movable spring piece corresponding to the isolating member along the first direction.

[0040] According to some embodiments of the present disclosure, a plurality of the movable reeds are arranged side by side along the third direction.

[0041] One embodiment of the above application has at least the following advantages or beneficial effects:

[0042] The relay of the disclosed embodiment includes multiple isolators, the top of each isolator is located on the side of the movable reed facing the static contact lead-out end, and the two side portions are respectively located on both sides of the width direction of the same movable reed. In this way, along the width direction of the movable reed, the two side portions of the isolator can limit the movable reed, thereby preventing the movable reed from moving when it moves in the contact contact or separation direction, ensuring the reliability of the contact between the multiple movable reeds and the static contact lead-out end, and thus ensuring the consistency of the relay product. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0044] FIG. 1 is an exploded schematic diagram showing a relay according to a first exemplary embodiment.

[0045] FIG. 2 is a schematic top view of the sealing unit in FIG. 1 .

[0046] FIG3 is an exploded schematic diagram of the sealing unit in FIG1 .

[0047] FIG. 4 is a cross-sectional view along AA in FIG. 2 .

[0048] 5 to 10 are cross-sectional views showing two spacers and two movable springs assembled according to different exemplary embodiments.

[0049] FIG11 is a schematic top view of a sealing unit of a relay according to a second exemplary embodiment.

[0050] FIG12 is a cross-sectional view along line BB in FIG11 , in which only the ceramic cover, the frame, the static contact lead-out terminal, the first magnetic conductor, the connector and the isolation member are shown.

[0051] FIG13 is an exploded schematic diagram of FIG11 , in which only the ceramic cover, the frame, the static contact lead-out terminal, the first magnetic conductor, the connector and the isolation member are shown.

[0052] FIG14 is a schematic structural diagram of the isolating member and the movable spring in FIG3 .

[0053] 1. Relay; 10. Housing; 11. First housing; 11a. Exposure hole; 12. Second housing; 20. Coil unit; 21. Coil frame; 22. Coil; 30. Arc extinguishing unit; 31. Arc extinguishing magnet; 32. Yoke clamp; 40. Sealing unit; 1000. Contact container; 1001. Contact chamber; 1002. First through hole; 1100. Insulation cover; 1110. Ceramic cover; 1111. Third through hole; 1120. Frame; 1200. Yoke plate; 1210. Second through hole; 2000. Static contact lead-out terminal; 3000. Moving assembly; 3100. Moving spring assembly; 3110. Moving spring piece; 3111. Stopper; 3200. Push rod assembly; 3210. Push rod; 3211. Base; 3212. Rod portion; 3220, contact bracket; 3221, bottom wall; 3222, side wall; 3223, card hole; 3230, top wall; 3231, card; 3300, elastic component; 4000, magnetic circuit portion; 4300, static iron core; 4310, through hole; 4400, moving iron core; 4500, reset member; 5000, metal cover; 6100, first magnetic conductor; 6101, through hole; 6200, second magnetic conductor; 100, isolation member; 100a, stop surface; 110, top; 111, connecting hole; 120, side; 200, connecting member; 210, step structure. DETAILED DESCRIPTION

[0054] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0055] As shown in FIG1 , a relay 1 according to an embodiment of the present disclosure includes a housing 10, a coil unit 20, an arc extinguishing unit 30, and a sealing unit 40. The sealing unit 40 is disposed within the housing 10, with the top of the static contact lead-out terminal of the sealing unit 40 exposed to the outer surface of the housing 10 through an exposure hole 11 a in the housing 10. Both the coil unit 20 and the arc extinguishing unit 30 are disposed within the housing 10.

[0056] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present disclosure are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to the process, method, product, or apparatus.

[0057] As an example, the housing 10 includes a first shell 11 and a second shell 12, which are connected to form a chamber for accommodating the coil unit 20, the arc extinguishing unit 30, and the sealing unit 40. In the embodiment of the present disclosure, the exposure hole 11a is provided in the first shell 11.

[0058] The arc extinguishing unit 30 is used to extinguish the arc generated between the static contact lead-out terminal of the sealing unit 40 and the movable reed.

[0059] As an example, the arc extinguishing unit 30 includes two arc extinguishing magnets 31. The arc extinguishing magnets 31 can be permanent magnets, and each arc extinguishing magnet 31 can be substantially rectangular. The two arc extinguishing magnets 31 are respectively disposed on either side of the sealing unit 40 and are arranged opposite each other along the length direction of the movable spring.

[0060] By providing two arc-extinguishing magnets 31 disposed opposite to each other, a magnetic field can be formed around the static contact lead-out terminal and the movable spring. Therefore, the arc generated between the static contact lead-out terminal and the movable spring will be stretched away from each other by the action of the magnetic field, thereby achieving arc extinguishing.

[0061] The arc extinguishing unit 30 also includes two yoke clamps 32, which are arranged corresponding to the positions of the two arc extinguishing magnets 31. In addition, the two yoke clamps 32 surround the sealing unit 40 and the two arc extinguishing magnets 31. The design of the yoke clamps 32 surrounding the arc extinguishing magnets 31 can prevent the magnetic field generated by the arc extinguishing magnets 31 from spreading outward and affecting the arc extinguishing effect. The yoke clamps 32 are made of soft magnetic material. Soft magnetic materials may include but are not limited to iron, cobalt, nickel, and alloys thereof.

[0062] As shown in FIG. 2 to FIG. 4 , the sealing unit 40 includes a contact container 1000 , a pair of static contact lead terminals 2000 , a moving assembly 3000 , and a magnetic circuit portion 4000 .

[0063] 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 cavity. In addition, the contact container 1000 can be formed by connecting multiple components in a predetermined assembly method.

[0064] 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 .

[0065] 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 via 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, also by laser welding, brazing, resistance welding, gluing, etc. A frame piece 1120 is provided 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.

[0066] The contact container 1000 further has a pair of first through holes 1002 , which are connected to the contact chamber 1001 . The first through holes 1002 are used to allow the static contact lead terminals 2000 to pass through. In the embodiment of the present disclosure, the first through holes 1002 are formed on the ceramic cover 1110 .

[0067] 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.

[0068] A pair of static contact lead-out terminals 2000 are respectively disposed in the pair of first through holes 1002 and connected to the ceramic cover 1110 , for example, by welding.

[0069] The bottom of the static contact lead-out terminal 2000 serves as a static contact, and the static contact can be provided at the bottom of the static contact lead-out terminal 2000 in an integrated or split manner.

[0070] Continuing to refer to Figures 3 and 4, the dynamic assembly 3000 includes a plurality of dynamic spring assemblies 3100, a push rod assembly 3200, and an elastic assembly 3300 arranged side by side. The plurality of dynamic spring assemblies 3100 are disposed within the insulating cover 1100 and are mounted on the push rod assembly 3200 via the elastic assembly 3300. The two ends of the plurality of dynamic spring assemblies 3100 along the first direction D1 are used to respectively contact or separate with a pair of static contact lead terminals 2000. The first direction D1 is the arrangement direction of the pair of static contact lead terminals 2000. It will be understood that the plurality of dynamic spring assemblies 3100 are arranged side by side, so that the plurality of dynamic spring assemblies 3100 form a plurality of contact points with each static contact lead terminal 2000, such as two, three, four, etc.

[0071] It should be noted that, if a pair of static contact lead terminals 2000 and a plurality of dynamic spring assemblies 3100 are regarded as a set of combinations, then the relay of the embodiment of the present disclosure may include multiple sets of combinations.

[0072] Each dynamic spring assembly 3100 includes a dynamic spring piece 3110. Each dynamic spring piece 3110, at either end along the first direction D1, is configured to engage or disengage with a pair of static contact terminals 2000. The dynamic spring piece 3110 may include a dynamic spring body and dynamic contacts disposed at either end of the dynamic spring body. The dynamic contacts may be separate components connected to the dynamic spring body. Alternatively, the dynamic contacts may be integrally formed with the dynamic spring body.

[0073] The movable spring assembly 3100 further includes a second magnetic conductor 6200, which is fixedly connected to the side of the movable spring piece 3110 facing away from the static contact lead-out end 2000. The function of the second magnetic conductor 6200 will be described in detail below.

[0074] In the disclosed embodiment, the movable assembly 3000 includes two side-by-side movable spring assemblies 3100. One end of each movable spring assembly 3100 is used to contact or separate with the static contact of one of the static contact lead terminals 2000, while the other end of each movable spring assembly 3100 is used to contact or separate with the static contact of the other static contact lead terminal 2000. Specifically, one end of each movable spring assembly 3100 forms two contact points with one of the static contact lead terminals 2000, while the other end of each movable spring assembly 3100 forms two contact points with the other static contact lead terminal 2000.

[0075] In other embodiments, the number of the dynamic spring assemblies 3100 can also be three, four, five, etc.

[0076] It is understood that the dynamic assembly 3000 includes multiple dynamic spring assemblies 3100, each of which includes a dynamic spring piece 3110. The multiple dynamic spring pieces 3110, at both ends along the first direction D1, respectively contact or separate with a pair of static contact lead-out terminals. Because the multiple dynamic spring pieces 3110 do not restrict each other, the multiple dynamic spring pieces 3110, at both ends along the first direction D1, respectively contact with a pair of static contact lead-out terminals 2000 to form a reliable parallel circuit. The number of contact points formed by the multiple dynamic spring pieces 3110 and a static contact lead-out terminal 2000 is greater than or equal to two, achieving a current shunting effect. In addition, based on the principle that the magnitude of the electromotive repulsive force is proportional to the square of the current, the magnitude of the electromotive repulsive force of each contact is significantly reduced, which is beneficial to improving the short-circuit resistance and enhancing the reliability of the relay.

[0077] As shown in Figures 3 and 4 , the direction of movement of the movable spring 3110 is defined as the second direction D2, and the direction perpendicular to the first and second directions D1 and D2 is defined as the third direction D3. The push rod assembly 3200 includes a push rod 3210 and a contact support 3220. The contact support 3220 includes two side walls 3222 and a top wall 3230. One end of each side wall 3222 is connected to either side of the top wall 3230 along the third direction D3, and the other end of each side wall 3222 is connected to one axial end of the push rod 3210. Multiple movable spring assemblies 3100 are installed within the space enclosed by the contact support 3220 via an elastic assembly 3300. The top wall 3230 is located on the side of the movable spring 3110 facing the static contact lead 2000.

[0078] The contact support 3220 may further include a bottom wall 3221 connected to one axial end of the push rod 3210, two side walls 3222 integrally connected to two sides of the bottom wall 3221 along the third direction D3, and a top wall 3230 connected to one end of the two side walls 3222 away from the bottom wall 3221.

[0079] In one embodiment, a latch hole 3223 is provided at the top of each side wall 3222 of the contact holder 3220. A latch 3231 is provided at each end of the top wall 3230. The two latches 3231 respectively snap into the two latch holes 3223 of the contact holder 3220, thereby securing the top wall 3230 to the two side walls 3222. The push rod 3210 includes a base 3211 and a rod portion 3212. The base 3211 is connected to one axial end of the rod portion 3212. The bottom wall 3221 of the contact holder 3220 is connected to the base 3211. The elastic assembly 3300 is disposed between the multiple dynamic spring assemblies 3100 and the base 3211, and is used to apply an elastic force to the multiple dynamic spring assemblies 3100, causing them to move toward the top wall 3230, thereby providing contact pressure.

[0080] In another embodiment, the contact bracket 3220 may also not include the bottom wall 3221, and one end of the two side walls 3222 are respectively connected to the two sides of the top wall 3230 along the third direction D3, and the other ends of the two side walls 3222 are respectively connected to the two sides of the base 3211 along the third direction D3.

[0081] Of course, the contact bracket 3220 can also have other structures, which are not listed here one by one.

[0082] It can be understood that the elastic component 3300 can be used to flexibly support multiple dynamic spring components 3100 to provide contact pressure.

[0083] Of course, in other embodiments, the push rod assembly 3200 may also adopt other structures, which will not be described here.

[0084] The plurality of movable springs 3110 are arranged side by side along the third direction D3.

[0085] 3 and 4 , the yoke plate 1200 has a second through-hole 1210 extending through two opposing sides of the yoke plate 1200 along its thickness. The second through-hole 1210 communicates with the contact chamber 1001 of the contact container 1000. A rod 3212 is axially movably disposed through the second through-hole 1210. A base 3211 at one axial end of the rod 3212 is disposed within the contact chamber 1001.

[0086] The sealing unit 40 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 covers the second through hole 1210 in 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 movable iron core 4400 of the magnetic circuit portion 4000.

[0087] Referring back to FIG1 , the coil unit 20 includes a coil frame 21 and a coil 22 . The coil frame 21 is hollow and cylindrical and is made of insulating material. The metal cover 5000 is inserted into the coil frame 21 . The coil 22 surrounds the coil frame 21 .

[0088] As shown in Figures 3 and 4, the magnetic circuit part 4000 includes a static iron core 4300, a moving iron core 4400 and a reset member 4500. 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 4310, and the through hole 4310 is arranged corresponding to the position of the second through hole 1210, for the rod portion 3212 to pass through it. The moving iron core 4400 is movably arranged in the metal cover 5000, and is arranged opposite to the static iron core 4300 along the axial direction of the rod portion 3212. The moving iron core 4400 is connected to the rod portion 3212, and is used to be attracted by the static iron core 4300 when the coil 22 is energized. The moving iron core 4400 and the rod portion 3212 can be connected by screwing, riveting, welding or other methods.

[0089] The reset member 4500 is located inside the metal cover 5000 and is arranged between the static iron core 4300 and the movable iron core 4400. It is used to reset the movable iron core 4400 when the coil 22 is powered off. The reset member 4500 can be a spring and is sleeved on the outside of the rod 3212.

[0090] It should be noted that when the coil 22 is energized, the magnetic circuit portion 4000 can drive the push rod assembly 3200 to move upward via the rod portion 3212. When the movable spring 3110 contacts the static contact lead 2000, the movable spring 3110 is stopped by the static contact lead 2000, while the rod portion 3212 and the base 3211 continue to move upward until the overtravel is completed.

[0091] As shown in Figures 3 and 4 , the relay 1 further includes a plurality of spacers 100. The number of spacers 100 corresponds to the number of movable springs 3110. The following description uses an example in which the number of movable springs 3110 and spacers 100 is two, but this is not limiting. For example, the number of movable springs 3110 and spacers 100 can also be three, four, or the like.

[0092] Each isolator 100 includes a top 110 and two side portions 120. The top 110 is located on the side of the movable spring 3110 facing the static contact lead-out terminal 2000. The two side portions 120 are respectively connected to both sides of the top 110 along the third direction D3 and extend from the top 110 away from the static contact lead-out terminal 2000. The two side portions 120 of the isolator 100 are respectively located on both sides of the same movable spring 3110 in the third direction D3.

[0093] In the embodiment of the present disclosure, the relay 1 includes multiple isolators 100, the top 110 of each isolator 100 is located on the side of the movable reed 3110 facing the static contact lead-out terminal 2000, and the two side portions 120 are respectively located on both sides of the same movable reed 3110 along the third direction D3. In this way, along the third direction D3, the two side portions 120 of the isolator 100 can limit the movable reed 3110, avoiding movement when the movable reed 3110 moves along the contact contact or separation direction, ensuring the reliability of the contact between the multiple movable reeds 3110 and the static contact lead-out terminal 2000, and thus ensuring the consistency of the relay product.

[0094] Continuing with Figures 3 and 4 , multiple spacers 100 are mounted on the push rod assembly 3200. Furthermore, the multiple spacers 100 are fixedly connected to the top wall 3230. For example, the multiple spacers 100 are connected to a side surface of the top wall 3230 facing the push rod 3210. In another embodiment, the multiple spacers 100 may also be connected to a side surface of the top wall 3230 facing away from the push rod 3210.

[0095] In one embodiment, the top portion 110 of each isolating member 100 is connected to a surface of the top wall 3230 facing the push rod 3210. The top portion 110 and the top wall 3230 may be connected by riveting, welding, bonding, or the like.

[0096] As an example, the spacer 100 is made of a soft magnetic material, which may include but is not limited to iron, cobalt, nickel, and alloys thereof.

[0097] It is understandable that when the multiple movable reeds 3110 are energized, the multiple isolation members 100 can be magnetized, thereby forming a suction force on the multiple movable reeds 3110 in the direction of contact closure, thereby achieving an anti-short circuit effect.

[0098] It can be seen that when the isolator 100 is made of soft magnetic material, on the one hand, the isolator 100 can play the role of limiting the movable spring 3110 to prevent the movable spring 3110 from moving; on the other hand, the isolator 100 can also be used to resist the electric repulsive force generated by the short-circuit current to achieve an anti-short-circuit effect.

[0099] Of course, in other embodiments, the isolation member 100 may also be made of insulating material.

[0100] In one embodiment, the relay 1 further includes a plurality of second magnetic conductors 6200. The plurality of second magnetic conductors 6200 corresponds to the number of the plurality of movable springs 3110 and is fixedly connected to the side of the plurality of movable springs 3110 facing away from the static contact lead-out terminal 2000. The fixedly connected movable springs 3110 and second magnetic conductors 6200 constitute a movable spring assembly 3100.

[0101] Along the second direction D2 , the isolation members 100 on both sides of the movable spring 3110 and the second magnetic conductor 6200 are used to form a magnetic conductive loop.

[0102] When multiple, side-by-side movable springs 3110 contact a pair of stationary contact terminals 2000 at their respective ends along the first direction D1, current flows through the movable springs 3110, forming a magnetic circuit around the movable springs 3110 between the spacer 100 and the second magnetic conductor 6200 on either side of the movable springs 3110. When a short-circuit current flows through the movable springs 3110, an attractive force is generated between the spacer 100 and the second magnetic conductor 6200 in the direction of contact pressure. This attractive force counteracts the electrodynamic repulsion between the movable springs 3110 and the stationary contact terminals 2000 caused by the short-circuit current, preventing the movable springs 3110 and the stationary contact terminals 2000 from bouncing apart.

[0103] It is understood that the multiple movable reeds 3110, at their respective ends along the first direction D1, contact a pair of static contact leads 2000, forming a reliable parallel circuit and achieving a current shunting effect. Based on the principle that the magnitude of the electrodynamic repulsive force is proportional to the square of the current, the magnitude of the electrodynamic repulsive force at each contact is significantly reduced. Therefore, when resisting the same short-circuit current, the relay 1 of the disclosed embodiment can utilize a smaller spacer 100 and / or second magnetic conductor 6200, thereby reducing the space occupied by the short-circuit protection structure and facilitating miniaturization of the relay 1.

[0104] It is understandable that the second magnetic conductor 6200 and the movable spring 3110 can be fixedly connected by riveting, but the present invention is not limited thereto.

[0105] The second magnetic conductor 6200 may be in the shape of a straight line or a U. The second magnetic conductor 6200 may be made of soft magnetic materials such as iron, cobalt, nickel, and alloys thereof.

[0106] It is understood that when a second magnetic conductor 6200 is fixed to the side of each movable spring 3110 facing away from the static contact lead-out terminal 2000, the elastic component 3300 can be disposed between the plurality of second magnetic conductors 6200 and the base 3211. Furthermore, one end of the elastic component 3300 can be directly connected to the second magnetic conductor 6200.

[0107] In one embodiment, the elastic component 3300 can be a compression spring or a leaf spring. Furthermore, the number of the compression springs or leaf springs can be one or more. The number of the plurality of compression springs or leaf springs can be the same as the number of the plurality of movable reeds 3110.

[0108] 5 to 10 , cross-sectional views of different embodiments of the assembled spacer 100 and the movable spring 3110 will be described in detail.

[0109] As shown in Figure 5, two adjacent isolators 100 in the plurality of isolators 100 are separate structures and do not contact each other. Of course, in another embodiment, two adjacent isolators 100 in the plurality of isolators 100 may also contact each other.

[0110] As shown in FIG. 6 , two adjacent isolation members 100 among the plurality of isolation members 100 are connected into an integral structure via two side portions 120 .

[0111] As shown in FIG7 , based on the embodiment shown in FIG5 , a second magnetic conductor 6200 is fixedly provided on the side of each movable spring piece 3110 facing away from the static contact lead-out terminal 2000 , and the second magnetic conductor 6200 is in a straight line shape.

[0112] As shown in FIG8 , based on the embodiment shown in FIG6 , a second magnetic conductor 6200 is fixedly provided on the side of each movable spring piece 3110 facing away from the static contact lead-out terminal 2000 , and the second magnetic conductor 6200 is in a straight line shape.

[0113] As shown in FIG9 , based on the embodiment shown in FIG5 , a second magnetic conductor 6200 is further fixedly disposed on the side of each movable spring 3110 facing away from the static contact lead 2000. The second magnetic conductor 6200 is U-shaped. Furthermore, to allow space for the U-shaped second magnetic conductor 6200 on either side of the movable spring 3110 along the third direction D3, the length of the side portion 120 of the isolator 100 shown in FIG9 along the second direction D2 is shorter than that shown in FIG5 .

[0114] As shown in FIG10 , based on the embodiment shown in FIG6 , a second magnetic conductor 6200 is further fixedly disposed on the side of each movable spring 3110 facing away from the static contact lead 2000. The second magnetic conductor 6200 is U-shaped. Furthermore, to allow space for the U-shaped second magnetic conductor 6200 on either side of the movable spring 3110 along the third direction D3, the length of the side portion 120 of the isolator 100 shown in FIG10 along the second direction D2 is shorter than that shown in FIG6 .

[0115] The sealing unit 40 of the second embodiment has a substantially similar basic structure to the sealing unit 40 of the first embodiment. Therefore, in the following description of the sealing unit 40 of the second embodiment, the structures already described in the first embodiment will not be repeated. Furthermore, structures identical to those of the sealing unit 40 described in the first embodiment are designated with the same reference numerals. Therefore, in the following description of this embodiment, the differences from the sealing unit 40 of the first embodiment will be primarily described.

[0116] As shown in Figures 11 to 13 , multiple isolators 100 are fixedly mounted within an insulating cover 1100 . Relay 1 also includes multiple rod-shaped connectors 200 ; the number of connectors 200 corresponds to the number of isolators 100 . One end of each connector 200 is connected to the insulating cover 1100 , and the other ends of each connector 200 are connected to each of the isolators 100 .

[0117] It can be understood that multiple isolation members 100 are connected to the insulating cover 1100 through multiple connectors 200. When the isolation member 100 is made of soft magnetic material, the suction force of the anti-short-circuit structure is transferred to the insulating cover 1100. Since the insulating cover 1100 is a stationary component, there is no need for excessive coil holding force, thereby reducing the power consumption of the coil of the relay 1 and the volume of the relay 1, and improving the anti-short-circuit capability.

[0118] In the disclosed embodiment, one end of each of the connectors 200 is connected to the ceramic cover 1110 of the insulating cover 1100. The top wall of the ceramic cover 1110 is provided with a plurality of third through holes 1111. The top 110 of each of the insulating members 100 is provided with a connection hole 111. One end of each of the connectors 200 passes through the plurality of third through holes 1111, and the other end of each of the connectors 200 passes through the plurality of connection holes 111.

[0119] The connection method between one axial end of the connector 200 and the ceramic cover 1110 can be implemented in various ways, such as welding, riveting, screwing, bonding, etc. The connection method between the other end of the connector 200 and the isolation member 100 can also be implemented in various ways, such as welding, riveting, screwing, bonding, clamping, etc.

[0120] It can be understood that when one end of the connector 200 is connected to the ceramic cover 1110 by welding, by welding the connector 200 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.

[0121] It is understandable that one end of the connector 200 may be connected to the outer wall of the ceramic cover 1110 , or to the inner wall of the ceramic cover 1110 , or to both the outer and inner walls of the ceramic cover 1110 .

[0122] It can be seen from this that the isolating member 100 is connected to the ceramic cover 1110 through the connecting member 200. On the one hand, the anti-short-circuit suction force 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 1 and the volume of the relay 1, and improving the short-circuit resistance; on the other hand, since the connecting member 200 is connected to the ceramic cover 1110, it will not occupy too much space in the contact chamber, thereby ensuring the arc extinguishing space of the arc extinguishing assembly and the activity space of the push rod 3210.

[0123] In addition, the isolating member 100 is connected to the rod-shaped connecting member 200, so that a variety of connection methods can be used between the isolating member 100 and the connecting member 200, such as riveting, laser welding, clamping, gluing, etc., which enriches the connection methods.

[0124] As an example, the connector 200 is a solid rod. In this way, the connector 200 and the isolation member 100 can be connected by riveting, making the connection more reliable. In addition, the solid rod has higher support strength and is less prone to deformation.

[0125] As shown in Figures 12 and 13 , the relay 1 further includes a first magnetic conductor 6100 having a plurality of through-holes 6101. The plurality of connectors 200 are respectively inserted through the plurality of through-holes 6101. The first magnetic conductor 6100 is disposed on the side of the plurality of movable springs 3110 facing the static contact lead-out terminals 2000 and abuts against the surface of the plurality of top portions 110 facing away from the movable springs 3110.

[0126] The first magnetic conductor 6100 may be in a straight line shape or a U-shape, and may be made of soft magnetic materials such as iron, cobalt, nickel, and alloys thereof.

[0127] It is understandable that when the multiple movable spring pieces 3110 are energized, the first magnetic conductor 6100 and the isolation member 100 are magnetized, thereby forming an attractive force on the multiple movable spring pieces 3110 in the direction of contact closure, thereby improving the short circuit resistance.

[0128] As shown in FIG. 12 , a step structure 210 is further provided on the outer periphery of each connecting member 200 , and the periphery of the through hole 6101 at one end away from the isolating member 100 abuts against the step structure 210 .

[0129] In the embodiment of the present disclosure, when assembling the connecting member 200, the first magnetic conductor 6100 and the isolating member 100, the connecting member 200 can be first passed through the third through hole 1111, and the connecting member 200 can be fixedly connected to the ceramic cover 1110; then, the connecting member 200 is inserted into the through hole 6101 of the first magnetic conductor 6100 until the periphery of the through hole 6101 of the first magnetic conductor 6100 abuts against the step structure 210 of the connecting member 200; finally, the isolating member 100 is fixedly connected to the connecting member 200, so that the first magnetic conductor 6100 is squeezed by the step structure 210 and the top 110 of the isolating member 100, thereby ensuring the stability of the connection of the first magnetic conductor 6100.

[0130] In one embodiment, the relay 1 of the present disclosure further includes a plurality of second magnetic conductors 6200. The plurality of second magnetic conductors 6200 corresponds to the number of the plurality of movable reeds 3110 and is fixedly connected to the side of the plurality of movable reeds 3110 facing away from the static contact lead-out terminal 2000. The second magnetic conductors 6200 form a magnetic circuit with the isolation member 100 and the first magnetic conductor 6100.

[0131] Optionally, the first magnetic conductor 6100 may include multiple stacked magnetic conductive sheets. It will be appreciated that increasing the number of thinner magnetic conductive sheets can increase the overall thickness of the first magnetic conductor 6100. On the one hand, thinner magnetic conductive sheets can be made from thin strips, resulting in lower material costs and easier handling. On the other hand, the number of magnetic conductive sheets can be flexibly adjusted based on the magnitude of the short-circuit current.

[0132] Of course, in other embodiments, the isolation member 100 in the sealing unit 40 of the second embodiment can also be made of an insulating material. When the isolation member 100 is made of an insulating material, the relay 1 can include a first magnetic conductor 6100 and multiple second magnetic conductors 6200. The multiple second magnetic conductors 6200 correspond in number to the multiple movable springs 3110 and are respectively fixedly connected to the side of the multiple movable springs 3110 facing away from the static contact lead-out terminal 2000. The first magnetic conductor 6100 can be installed as shown in Figures 12 and 13. Each second magnetic conductor 6200 is used to form a magnetic circuit with the first magnetic conductor 6100.

[0133] Of course, in other embodiments, the isolating member 100 may also be fixed relative to the insulating cover 1100 via a fixing bracket. Specifically, the fixing bracket may be fixedly connected to the yoke plate 1200, and the isolating member 100 is fixedly connected to the fixing bracket.

[0134] As shown in Figure 14 , each isolator 100 has two stop surfaces 100a arranged opposite each other along a first direction D1. Each movable spring 3110 is provided with a stop portion 3111 at each end, protruding from the surface of the movable spring 3110 facing the static contact lead 2000. The two stop surfaces 100a of each isolator 100 are used to respectively stop the stop portions 3111 at both ends of the movable spring 3110 corresponding to that isolator 100 in the first direction D1. This allows the isolator 100 to position the movable spring 3110 in the first direction D1, preventing it from moving significantly in the first direction D1 and potentially dislodging it from vibrating or impacting the relay, thereby improving product reliability.

[0135] It is understandable that the stopping portion 3111 may or may not be in contact with the stopping surface 100 a.

[0136] In the embodiment of the present disclosure, the two stopping surfaces 100 a are formed on two end surfaces of the top 110 of the isolation element 100 along the first direction D1 , but the present invention is not limited thereto.

[0137] It is understandable that the various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0138] In the application examples, 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. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the application examples can be understood according to the specific circumstances.

[0139] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the application embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the application embodiments.

[0140] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the claimed invention. In this specification, schematic representations 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 any one or more embodiments or examples.

Claims

1. A relay, characterized in that: include: A pair of static contact terminals; A plurality of movable springs, each of which has two ends along a first direction respectively in contact with or separated from a pair of static contact lead-out terminals; wherein the first direction is the arrangement direction of the pair of static contact lead-out terminals; and the movement direction of the movable spring is defined as a second direction; and A plurality of isolating members corresponding to the number of the plurality of movable spring pieces; each of the isolating members comprises a top and two side portions, the top being located on a side of the movable spring piece facing the static contact lead-out end, the two side portions being respectively connected to two sides of the top along a third direction, and extending from the top in a direction away from the static contact lead-out end; the two side portions of the isolating member are respectively located on two sides of the same movable spring piece along the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The relay according to claim 1, characterized in that: Two adjacent isolation members are connected to form an integral structure through the two side portions.

3. The relay according to claim 1, characterized in that: The two adjacent isolation members are split structures and do not contact each other.

4. The relay according to claim 1, characterized in that: The isolation element is made of soft magnetic material.

5. The relay according to claim 4, characterized in that: The relay further includes a plurality of second magnetic conductors, the plurality of second magnetic conductors correspond to the number of the plurality of movable spring pieces, and are respectively fixedly connected to a side of the plurality of movable spring pieces facing away from the static contact lead-out end; Wherein, along the second direction, the isolation members on both sides of the movable spring sheet and the second magnetic conductor are used to form a magnetic conductive circuit.

6. The relay according to claim 1, characterized in that: The relay further comprises a push rod assembly and an elastic assembly, wherein the elastic assembly is connected to the plurality of movable reeds and the push rod assembly, and the elastic assembly is used to provide contact pressure to the plurality of movable reeds; A plurality of the isolating members are mounted on the push rod assembly.

7. The relay according to claim 6, characterized in that: The push rod assembly comprises: Push rod; The contact support comprises a top wall and two side walls, one end of the two side walls is respectively connected to the two sides of the top wall along the third direction, and the other end of the two side walls is respectively connected to one axial end of the push rod; a plurality of the isolation members are fixedly connected to the top wall; Wherein, a plurality of the movable spring pieces are installed in the space enclosed by the contact bracket through the elastic component, and the top wall is located on the side of the movable spring piece facing the static contact lead-out end.

8. The relay according to claim 1, characterized in that: The relay further comprises an insulating cover, wherein the insulating cover is provided with a pair of first through holes, and the pair of static contact lead-out terminals are respectively provided in the pair of first through holes; The plurality of isolating members are disposed in the insulating cover and are fixed relative to the insulating cover.

9. The relay according to claim 8, characterized in that: The relay further comprises a plurality of connecting members, the number of the plurality of connecting members corresponding to the number of the plurality of isolating members; One ends of the plurality of connectors are connected to the insulating cover, and the other ends of the plurality of connectors are respectively connected to the plurality of isolation members.

10. The relay according to claim 9, characterized in that: The insulating cover is also provided with a plurality of third through holes, the top of each of the isolating members is provided with a connecting hole, one end of the plurality of connecting members respectively passes through the plurality of third through holes, and the other end of the plurality of connecting members respectively passes through the plurality of connecting holes.

11. The relay according to claim 10, characterized in that: The relay further comprises a first magnetic conductor, wherein the first magnetic conductor is provided with a plurality of through holes; The plurality of connecting members are respectively penetrated through the plurality of through holes, and the first magnetic conductor is arranged on one side of the plurality of movable spring pieces facing the static contact lead-out end, and abuts against one side surface of the plurality of tops facing away from the movable spring pieces.

12. The relay according to claim 11, characterized in that: A step structure is also provided on the outer periphery of each connecting member, and the peripheral edge of the hole at one end of the through hole away from the isolating member abuts against the step structure.

13. The relay according to claim 11, characterized in that: The relay also includes a plurality of second magnetic conductors, the number of which corresponds to the number of the plurality of movable springs, and which are respectively fixedly connected to the side of the plurality of movable springs facing away from the static contact lead-out end; each of the second magnetic conductors is used to form a magnetic conductive circuit with the first magnetic conductor.

14. The relay according to claim 8, characterized in that The isolation element is made of soft magnetic material.

15. The relay according to claim 14, characterized in that: The relay further includes a plurality of second magnetic conductors, the number of which corresponds to the number of the plurality of movable spring pieces, and the plurality of second magnetic conductors are respectively fixedly connected to a side of the plurality of movable spring pieces facing away from the static contact lead-out end.

16. The relay according to claim 8, characterized in that The insulating cover comprises: A ceramic cover is provided with a pair of the first through holes, and a plurality of the isolation members are fixedly installed in the ceramic cover; and The frame piece is annular and connected to the opening edge of the ceramic cover.

17. The relay according to claim 1, characterized in that: Each of the isolating members has two stop surfaces disposed opposite to each other along the first direction; Both ends of each of the movable spring pieces are provided with a stopper, and the stopper is protrudingly arranged on a side surface of the movable spring piece facing the static contact lead-out end; The two stop surfaces of each isolation member are used to respectively stop the stop portions at both ends of the movable spring piece corresponding to the isolation member along the first direction.

18. The relay according to claim 1, characterized in that The plurality of movable spring pieces are arranged side by side along the third direction.

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