WO2025055899A1 - Relay - Google Patents

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

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

The present disclosure relates to the technical field of electronic control devices, and in particular to a relay.

Background Art

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.

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 installed on the push rod assembly through 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.

Relays in the prior art usually use multiple movable springs arranged side by side to reduce the electromotive force between the moving and static contacts. However, during the process of opening or closing the contacts, individual movable springs may move, thereby interfering with other movable springs, thereby affecting the reliability of the contact.

Summary of the invention

The embodiment of the present disclosure provides a relay to solve the problem in the prior art that a movable spring piece is prone to movement.

The relay of the embodiment of the present disclosure includes:

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.

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

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

According to some embodiments of the present disclosure, the isolation element is made of soft magnetic material.

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;

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.

According to some embodiments of the present disclosure, 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 isolation members are mounted on the push rod assembly.

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

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.

According to some embodiments of the present disclosure, the relay further comprises an insulating cover, 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.

According to some embodiments of the present disclosure, the relay further comprises a plurality of connectors, and the number of the plurality of connectors corresponds to the number of the plurality of isolation 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.

According to some embodiments of the present disclosure, 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.

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;

The plurality of connecting members are respectively inserted into 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.

According to some embodiments of the present disclosure, a step structure is further provided on the periphery of each of the connecting members, and a peripheral edge of the hole of the through hole at one end away from the isolating member abuts against the step structure.

According to some embodiments of the present disclosure, the relay also 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 the side of the plurality of movable spring pieces facing away from the static contact lead-out end; each second magnetic conductor is used to form a magnetic conductive circuit with the first magnetic conductor.

According to some embodiments of the present disclosure, the isolation element is made of soft magnetic material.

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 spring pieces, and respectively fixedly connected to a side of the plurality of movable spring pieces facing away from the static contact lead-out end.

According to some embodiments of the present disclosure, 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.

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;

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.

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

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

The relay of the disclosed embodiment includes multiple isolating members, the top of each isolating member is located on the side of the moving reed piece 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 moving reed piece. In this way, along the width direction of the moving reed piece, the two side portions of the isolating member can limit the moving reed piece, thereby avoiding movement when the moving reed piece moves along the contact contact or separation direction, ensuring the reliability of the contact between the multiple moving reed pieces and the static contact lead-out end, and further ensuring the consistency of the relay product.

BRIEF DESCRIPTION OF THE DRAWINGS

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 attached drawings.

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

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

FIG. 3 is an exploded schematic diagram of the sealing unit in FIG. 1 .

Fig. 4 is a cross-sectional view along the line A-A in Fig. 2 .

5 to 10 are cross-sectional views showing two spacers and two movable springs assembled according to various exemplary embodiments.

FIG. 11 is a schematic top view of a sealing unit of a relay according to a second exemplary embodiment.

Fig. 12 is a cross-sectional view along B-B in Fig. 11, in which only the ceramic cover, frame piece, static contact lead-out terminal, first magnetic conductor, connector and isolator are shown.

FIG. 13 is an exploded schematic diagram of FIG. 11 , 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.

FIG. 14 is a schematic structural diagram of the isolating member and the movable spring piece in FIG. 3 .

The reference numerals are described as follows:
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 iron 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 iron plate; 1210, second through hole; 2000, static contact lead-out terminal; 3000, moving assembly; 3100, moving spring assembly; 3110, moving spring sheet; 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

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 disclosure will be comprehensive and complete and will 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.

As shown in Fig. 1, the relay 1 of the 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 arranged in the housing 10, and the top of the static contact lead-out end of the sealing unit 40 is exposed to the outer surface of the housing 10 through the exposure hole 11a of the housing 10. The coil unit 20 and the arc extinguishing unit 30 are both arranged in the housing 10.

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 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.

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.

The arc extinguishing unit 30 is used to extinguish the arc generated between the static contact lead-out end of the sealing unit 40 and the moving reed.

As an example, the arc extinguishing unit 30 includes two arc extinguishing magnets 31. The arc extinguishing magnets 31 may be permanent magnets, and each arc extinguishing magnet 31 may be substantially rectangular. The two arc extinguishing magnets 31 are respectively arranged on both sides of the sealing unit 40 and are arranged opposite to each other along the length direction of the moving spring piece.

By providing two arc extinguishing magnets 31 arranged opposite to each other, a magnetic field can be formed around the static contact lead-out terminal and the movable reed piece. Therefore, the arc generated between the static contact lead-out terminal and the movable reed piece will be elongated in a direction away from each other by the effect of the magnetic field, thereby achieving arc extinguishing.

The arc extinguishing unit 30 also includes two yoke iron clamps 32, and the two yoke iron clamps 32 are arranged corresponding to the positions of the two arc extinguishing magnets 31. In addition, the two yoke iron clamps 32 surround the sealing unit 40 and the two arc extinguishing magnets 31. By designing that the yoke iron clamps 32 surround the arc extinguishing magnets 31, it is possible to prevent the magnetic field generated by the arc extinguishing magnets 31 from diffusing outward and affecting the arc extinguishing effect. The yoke iron clamps 32 are made of soft magnetic material. Soft magnetic materials may include but are not limited to iron, cobalt, nickel, and alloys thereof.

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

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.

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 .

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.

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

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.

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.

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 .

Please continue 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 arranged in the insulating cover 1100 and are mounted on the push rod assembly 3200 through the elastic assembly 3300. The two ends of the plurality of dynamic spring assemblies 3100 along the first direction D1 are used to contact or separate with a pair of static contact lead-out terminals 2000 respectively. Among them, the first direction D1 is the arrangement direction of a pair of static contact lead-out terminals 2000. It can be understood that the plurality of dynamic spring assemblies 3100 are arranged side by side, so the number of contact points formed by the plurality of dynamic spring assemblies 3100 and each static contact lead-out terminal 2000 is multiple, such as two, three, four, etc.

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.

Each dynamic spring assembly 3100 includes a dynamic spring piece 3110, and the two ends of each dynamic spring piece 3110 along the first direction D1 are respectively used to contact or separate with a pair of static contact lead-out terminals 2000. The dynamic spring piece 3110 may include a dynamic spring body and dynamic contacts disposed at both ends of the dynamic spring body. The dynamic contact may be a separate part and connected to the dynamic spring body. Of course, the dynamic contact may also be integrally formed on the dynamic spring body.

The movable spring assembly 3100 further includes a second magnetic conductor 6200, which is fixedly connected to a 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.

In the embodiment of the present disclosure, the moving assembly 3000 includes two moving spring assemblies 3100 arranged side by side. One end of the two moving spring assemblies 3100 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 two moving spring assemblies 3100 is used to contact or separate with the static contact of the other static contact lead-out terminal 2000. Further, one end of the two moving spring assemblies 3100 forms two contact points with one of the static contact lead-out terminals 2000, and the other end of the two moving spring assemblies 3100 forms two contact points with the other static contact lead-out terminal 2000.

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

It is understandable that the moving assembly 3000 includes a plurality of moving spring assemblies 3100, and each moving spring assembly 3100 includes a moving spring piece 3110. The two ends of the plurality of moving spring pieces 3110 along the first direction D1 are respectively in contact with or separated from a pair of static contact lead-out terminals. Since the plurality of moving spring pieces 3110 will not restrict each other, the two ends of the plurality of moving spring pieces 3110 along the first direction D1 are respectively in 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 plurality of moving spring pieces 3110 and a static contact lead-out terminal 2000 is greater than or equal to two, achieving a shunting effect. In addition, according to the principle that the magnitude of the electric repulsive force is proportional to the square of the current, the magnitude of the electric repulsive force of each contact is significantly reduced, which is conducive to the improvement of the short-circuit resistance and the reliability of the relay.

As shown in FIG3 and FIG4, the movement direction of the moving 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 and a contact bracket 3220. The contact bracket 3220 includes two side walls 3222 and a top wall 3230, one end of the two side walls 3222 is respectively connected to the two sides of the top wall 3230 along the third direction D3, and the other end of the two side walls 3222 is respectively connected to the axial end of the push rod 3210. A plurality of moving spring assemblies 3100 are installed in the space surrounded by the contact bracket 3220 through the elastic assembly 3300, and the top wall 3230 is located on the side of the moving spring piece 3110 facing the static contact lead-out terminal 2000.

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

In one embodiment, a clamping hole 3223 is provided at the top of each side wall 3222 of the contact support 3220. Clamps 3231 are provided at both ends of the top wall 3230, and the two clamps 3231 are respectively clamped into the two clamping holes 3223 of the contact support 3220, so as to fix the top wall 3230 and the two side walls 3222. The push rod 3210 includes a base 3211 and a rod portion 3212, and the base 3211 is connected to an axial end of the rod portion 3212. The bottom wall 3221 of the contact support 3220 is connected to the base 3211. The elastic component 3300 is disposed between the plurality of dynamic spring components 3100 and the base 3211, and is used to apply elastic force to the plurality of dynamic spring components 3100 to move toward the top wall 3230, so as to provide contact pressure.

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.

Of course, the contact support 3220 may also be other structures, which are not listed here one by one.

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

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

The plurality of movable spring pieces 3110 are arranged side by side along the third direction D3.

3 and 4 , 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.

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 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.

Referring back to FIG. 1 , the coil unit 20 includes a coil frame 21 and a coil 22 . The coil frame 21 is in a hollow cylindrical shape 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 .

As shown in FIGS. 3 and 4 , the magnetic circuit portion 4000 includes a static iron core 4300, a moving iron core 4400 and a reset member 4500. The static iron core 4300 is fixedly disposed 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 disposed 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 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.

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 22 is powered off. The reset member 4500 can be a spring and is sleeved on the outside of the rod 3212.

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 through the rod portion 3212. When the movable spring piece 3110 contacts the static contact lead-out end 2000, the movable spring piece 3110 is stopped by the static contact lead-out end 2000, while the rod portion 3212 and the base 3211 will continue to move upward until the overtravel is completed.

As shown in FIG. 3 and FIG. 4 , the relay 1 further includes a plurality of isolators 100, and the number of the plurality of isolators 100 corresponds to the number of the plurality of movable springs 3110. The following description is made by taking the number of the movable springs 3110 and the isolators 100 as two as an example, but the invention should not be limited thereto. For example, the number of the movable springs 3110 and the isolators 100 can also be three, four, etc.

Each isolating member 100 includes a top portion 110 and two side portions 120, wherein the top portion 110 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 connected to the two sides of the top portion 110 along the third direction D3, and extend from the top portion 110 in a direction away from the static contact lead-out terminal 2000; the two side portions 120 of the isolating member 100 are respectively located on the two sides of the third direction D3 of the same movable reed 3110.

In the embodiment of the present disclosure, the relay 1 includes a plurality of isolating members 100, the top 110 of each isolating member 100 being located on the side of the movable reed 3110 facing the static contact lead-out terminal 2000, and the two side portions 120 being respectively located on the two sides of the same movable reed 3110 along the third direction D3. Thus, along the third direction D3, the two side portions 120 of the isolating member 100 can limit the movable reed 3110, thereby avoiding movement when the movable reed 3110 moves along the contact contact or separation direction, thereby ensuring the reliability of contact between the plurality of movable reeds 3110 and the static contact lead-out terminal 2000, and further ensuring the consistency of the relay product.

3 and 4, a plurality of isolators 100 are mounted on the push rod assembly 3200. Further, the plurality of isolators 100 are fixedly connected to the top wall 3230, for example, the plurality of isolators 100 are connected to a side surface of the top wall 3230 facing the push rod 3210. In another embodiment, the plurality of isolators 100 may also be connected to a side surface of the top wall 3230 facing away from the push rod 3210.

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

As an example, the isolation member 100 is made of a soft magnetic material, wherein the soft magnetic material may include but is not limited to iron, cobalt, nickel, and alloys thereof.

It can be understood that when the plurality of movable reed pieces 3110 are energized, the plurality of isolators 100 can be magnetized, thereby forming a suction force on the plurality of movable reed pieces 3110 in the direction of contact closure, thereby achieving an anti-short circuit effect.

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

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

In one embodiment, the relay 1 further includes a plurality of second magnetic conductors 6200, the number of which corresponds to the number of the plurality of movable spring pieces 3110, and the plurality of second magnetic conductors 6200 are respectively fixedly connected to the side of the plurality of movable spring pieces 3110 facing away from the static contact lead-out terminal 2000. The movable spring piece 3110 and the second magnetic conductors 6200 fixedly connected together constitute a movable spring assembly 3100.

Wherein, along the second direction D2, the isolation member 100 and the second magnetic conductor 6200 on both sides of the movable spring piece 3110 are used to form a magnetic conductive loop.

When the two ends of the plurality of movable spring pieces 3110 arranged side by side in the first direction D1 are in contact with a pair of stationary contact lead-out terminals 2000 respectively, current flows in the movable spring piece 3110, thereby forming a magnetic conductive loop around the movable spring piece 3110 between the isolating member 100 and the second magnetic conductive body 6200 on both sides of the movable spring piece 3110. When the short-circuit current passes through the movable spring piece 3110, an attractive force is generated between the isolating member 100 and the second magnetic conductive body 6200 in the direction of contact pressure, and the attractive force can resist the electromotive repulsion generated by the short-circuit current between the movable spring piece 3110 and the stationary contact lead-out terminal 2000, thereby ensuring that the movable spring piece 3110 and the stationary contact lead-out terminal 2000 do not bounce apart.

It can be understood that, since the two ends of the multiple moving spring pieces 3110 along the first direction D1 are respectively in contact with a pair of static contact lead-out terminals 2000 to form a reliable parallel circuit, the shunting effect is achieved. According to the principle that the magnitude of the electric repulsive force is proportional to the square of the current, the magnitude of the electric repulsive force of each contact is significantly reduced. Then, when resisting the same magnitude of short-circuit current, the relay 1 of the embodiment of the present disclosure can use a smaller isolating member 100 and/or a second magnetic conductor 6200, thereby reducing the space occupied by the anti-short-circuit structure, which is conducive to the miniaturization of the relay 1.

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

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

It is understandable 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. In addition, one end of the elastic component 3300 can be directly connected to the second magnetic conductor 6200.

In one embodiment, the elastic component 3300 may be a compression spring or a leaf spring. Furthermore, the number of the compression spring or leaf spring may be one or more. The number of the plurality of compression springs or leaf springs may be the same as the number of the plurality of movable spring leaves 3110.

5 to 10 , cross-sectional views of different embodiments of the spacer 100 and the movable spring 3110 after being assembled are described in detail.

As shown in Fig. 5, two adjacent isolators 100 among the plurality of isolators 100 are split structures and do not contact each other. Of course, in another embodiment, two adjacent isolators 100 among the plurality of isolators 100 may also contact each other.

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

As shown in FIG. 7 , based on the embodiment shown in FIG. 5 , 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.

As shown in FIG. 8 , based on the embodiment shown in FIG. 6 , 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.

As shown in FIG9 , 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 U-shaped. In addition, in order to reserve space for the U-shaped second magnetic conductor 6200 on both sides of the movable spring piece 3110 along the third direction D3, the length of the side portion 120 of the isolating member 100 shown in FIG9 along the second direction D2 is shorter than that shown in FIG5 .

As shown in FIG10 , 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 U-shaped. In addition, in order to reserve space for the U-shaped second magnetic conductor 6200 on both sides of the movable spring piece 3110 along the third direction D3, the length of the side portion 120 of the isolating member 100 shown in FIG10 along the second direction D2 is less than that shown in FIG6 .

The sealing unit 40 of the second embodiment has substantially the same structure in basic structure as the sealing unit 40 of the first embodiment. Therefore, in the following description of the sealing unit 40 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 sealing unit 40 described in the first embodiment. Therefore, in the following description of this embodiment, the differences from the sealing unit 40 of the first embodiment are mainly described.

As shown in Figures 11 to 13, a plurality of isolating members 100 are fixedly installed in an insulating cover 1100. The relay 1 further includes a plurality of rod-shaped connecting members 200; the number of the connecting members 200 corresponds to the number of the isolating members 100. One end of the connecting members 200 is connected to the insulating cover 1100, and the other ends of the connecting members 200 are respectively connected to the isolating members 100.

It can be understood that multiple isolation members 100 are connected to the insulating cover 1100 through multiple connectors 200. When the isolation members 100 are 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 short circuit resistance.

In the embodiment of the present disclosure, one end of the plurality of 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 insulating member 100 is provided with a connecting hole 111, one end of the plurality of connectors 200 passes through the plurality of third through holes 1111 respectively, and the other end of the plurality of connectors 200 passes through the plurality of connecting holes 111 respectively.

The connection 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 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.

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.

It is understandable that one end of the connector 200 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 .

It can be seen from this that the isolating piece 100 is connected to the ceramic cover 1110 through the connecting piece 200. On the one hand, the suction 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 1 and the volume of the relay 1, and improving the short circuit resistance. On the other hand, since the connecting piece 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.

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.

As an example, the connecting member 200 is a solid rod. In this way, the connecting member 200 and the isolating member 100 can be connected by riveting, making the connection more reliable. In addition, the solid rod has a higher support strength and is less likely to deform.

As shown in Fig. 12 and Fig. 13, the relay 1 further comprises a first magnetic conductor 6100, and the first magnetic conductor 6100 is provided with a plurality of through holes 6101. The plurality of connectors 200 are respectively provided in the plurality of through holes 6101, and the first magnetic conductor 6100 is provided on a side of the plurality of movable spring pieces 3110 facing the static contact lead-out end 2000, and abuts against a side surface of the plurality of tops 110 facing away from the movable spring pieces 3110.

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.

It is understandable that when the multiple moving reed pieces 3110 are energized, the first magnetic conductor 6100 and the isolation member 100 are magnetized, thereby forming a suction force on the multiple moving reed pieces 3110 in the direction of contact closure, thereby improving the short circuit resistance.

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 hole at one end of the through hole 6101 away from the isolating member 100 abuts against the step structure 210 .

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.

In one embodiment, the relay 1 of the embodiment of the present disclosure further includes a plurality of second magnetic conductors 6200, the number of which corresponds to the number of the plurality of movable reed pieces 3110, and the plurality of second magnetic conductors 6200 are respectively fixedly connected to the side of the plurality of movable reed pieces 3110 facing away from the static contact lead-out terminal 2000. The second magnetic conductors 6200 are used to form a magnetic conductive loop with the isolation member 100 and the first magnetic conductor 6100.

Optionally, the first magnetic conductor 6100 may include a plurality of stacked magnetic conductors. It is understood that by increasing the number of thinner magnetic conductors, the overall thickness of the first magnetic conductor 6100 may be increased. On the one hand, the magnetic conductors are thinner and can be made of thin strips, so the material cost is low and easy to operate. On the other hand, the number of magnetic conductors can be flexibly adjusted according to the size of the short-circuit current.

Of course, in other embodiments, the isolating member 100 in the sealing unit 40 of the second embodiment may also be made of insulating material. When the isolating member 100 is made of insulating material, the relay 1 may include a first magnetic conductor 6100 and a plurality of second magnetic conductors 6200, the plurality of second magnetic conductors 6200 corresponding to the number of the plurality of movable reed pieces 3110, and respectively fixedly connected to the side of the plurality of movable reed pieces 3110 facing away from the static contact lead-out terminal 2000. The first magnetic conductor 6100 may be installed with reference to the manner shown in FIGS. 12 and 13, and each second magnetic conductor 6200 is used to form a magnetic circuit with the first magnetic conductor 6100.

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

As shown in FIG. 14 , each isolating member 100 has two stop surfaces 100a disposed opposite to each other along the first direction D1; each movable spring piece 3110 is provided with a stop portion 3111 at both ends thereof, and the stop portion 3111 is convexly disposed on the surface of the movable spring piece 3110 facing the static contact lead-out terminal 2000; the two stop surfaces 100a of each isolating member 100 are used to respectively stop the stop portions 3111 at both ends of the movable spring piece 3110 corresponding to the isolating member 100 in the first direction D1. In this way, the isolating member 100 can also limit the movable spring piece 3110 in the first direction D1, prevent the movable spring piece 3110 from making a large-scale movement in the first direction D1, and prevent the movable spring piece 3110 from falling out when the relay is in a vibration or impact state, thereby improving the reliability of the product.

It is understandable that the stop portion 3111 may or may not be in contact with the stop surface 100a.

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.

It can be understood 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.

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.

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.

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.

Claims (18)

A relay, characterized in that it comprises: 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. The relay according to claim 1 is characterized in that two adjacent isolation members are connected into an integral structure through the two side portions. The relay according to claim 1 is characterized in that two adjacent isolation members are split structures and do not contact each other. The relay according to claim 1, wherein the isolation member is made of soft magnetic material. The relay according to claim 4, characterized in that the relay further comprises 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. 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 the moving reeds and the push rod assembly, and the elastic assembly is used to provide contact pressure to the plurality of the moving reeds; A plurality of the isolation members are mounted on the push rod assembly. 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. The relay according to claim 1, characterized in that the relay further comprises an insulating cover, the insulating cover is provided with a pair of first through holes, and the pair of static contact lead terminals are respectively inserted into 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. The relay according to claim 8, characterized in that the relay further comprises a plurality of connecting members, and the number of the plurality of connecting members corresponds 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. The relay according to claim 9 is 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. 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 inserted into 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. The relay according to claim 11 is characterized in that a step structure is further provided on the periphery of each of the connecting members, and a peripheral edge of the hole of the through hole at one end away from the isolating member abuts against the step structure. The relay according to claim 11 is characterized in that the relay also 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 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; each of the second magnetic conductors is used to form a magnetic conductive circuit with the first magnetic conductor. The relay according to claim 8, characterized in that the isolation member is made of soft magnetic material. The relay according to claim 14 is characterized in that the relay further comprises a plurality of second magnetic conductors, the number of the plurality of second magnetic conductors 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. 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. 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. The relay according to claim 1, characterized in that a plurality of the movable reeds are arranged side by side along the third direction.