CN211578662U

CN211578662U - Relay capable of extinguishing electric arc

Info

Publication number: CN211578662U
Application number: CN201922183077.8U
Authority: CN
Inventors: 吴国华; 王坚敏; 王铁伟
Original assignee: NINGBO TIANBO GANGLIAN ELECTRONICS CO Ltd
Current assignee: NINGBO TIANBO GANGLIAN ELECTRONICS CO Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-09-25
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a relay capable of extinguishing electric arc, wherein the relay capable of extinguishing electric arc comprises a linkage component, at least one movable conductive component, at least one static conductive component, a shell, an arc extinguishing shell and at least one arc extinguishing magnet, the movable conductive component comprises at least two movable conductive components, the movable conductive component is connected with the linkage component in a reciprocating motion, the conductive component comprises a conductive main body and at least two fixed conductive bodies, two fixed conductive bodies are arranged on the conductive main body in a power-on manner, at least two fixed conductive bodies on the conductive main body are respectively kept at a preset distance from one end of two movable conductive bodies, wherein the static conductive bodies are kept at the same distance from one of the movable conductive bodies, wherein the shell forms an installation cavity, wherein the linkage component, the moving conductive component, the conductive component, and the static conductive component are mounted to the mounting cavity.

Description

Relay capable of extinguishing electric arc

Technical Field

The utility model relates to a relay especially relates to a relay of electric arc can go out.

Background

Relays, which are electronic control devices, are widely used in automatic control circuits. In essence, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

A conventional relay includes a housing, a base, a movable spring assembly, a stationary spring assembly, and a linkage, wherein the movable spring assembly, the stationary spring assembly, and the linkage are respectively mounted to the base. The base is covered on the shell. The movable spring assembly and the linkage are both sealingly disposed within the housing. The movable spring assembly comprises a movable spring plate and a movable contact bulge, wherein the movable contact bulge is installed on the movable spring plate, and the movable spring plate is connected to the linkage device in a linkage mode. The static spring assembly comprises at least one static spring piece and at least one static contact bulge, wherein the static contact bulge is arranged on the static spring piece and is opposite to the movable contact bulge. When the movable spring plate is linked with the linkage device, the movable contact bulge on the movable spring plate and the static contact bulge on the static spring plate can be switched between a contact state/separation state and a separation state/contact state.

Many existing relays have only a single stationary contact projection and a single movable contact projection that cooperate to form a single arc. Therefore, the conventional relay cannot be applied to a high-voltage direct-current circuit. With the development of new energy technology, the requirements on the performance of the relay capable of being used for the high-voltage direct-current circuit are more and more urgent and higher. In order to improve the conversion efficiency of the electric energy, the conversion power of the relay needs to be continuously increased, and the voltage is increased from 450V to 750V, or even higher. With the increase of voltage, the electric arc generated by the relay is difficult to extinguish, and the arc extinguishing distance is multiplied, for example, the rated load voltage of the main current relays in the market such as AEP19024 type relay, macro-sending HFE82-600 type relay, etc. is 750V or less, and the main limitation lies in the arc extinguishing and breaking technology of the relay.

The stroke and over travel control technology of the high-voltage direct-current relay also restrict the arc extinguishing performance of the relay, for example, the schemes disclosed in CN106504952A, CN106486323A and the like all obviously rely on material tolerance to control, the control difficulty and cost are very high, and the consistency is low, so that the switching voltage of the relay can only be maintained at a low level, and the electrical life is also greatly influenced.

Disclosure of Invention

Another object of the present invention is to provide a relay capable of extinguishing an arc, wherein the relay is capable of extinguishing an arc by forming at least two arcs in the relay capable of extinguishing an arc, and by being capable of extinguishing an arc, thereby making the relay capable of extinguishing an arc be applicable to a high voltage environment, especially to an environment in which a rated load voltage is all above 750V.

Another object of the present invention is to provide a relay capable of extinguishing electric arc, wherein the relay capable of extinguishing electric arc includes an arc extinguishing chamber, the relay capable of extinguishing electric arc includes an at least arc extinguishing magnet, wherein the multistage electric arc that the relay capable of extinguishing electric arc formed is formed in the arc extinguishing chamber, wherein the multistage electric arc by the magnetic force that the arc extinguishing magnet formed pulls all sides of the arc extinguishing chamber are cooled and extinguished.

In order to realize the utility model discloses above at least one purpose, the utility model provides a relay of electric arc can go out, wherein the relay of electric arc can go out includes:

a linkage member;

at least one dynamic and conductive component, wherein the dynamic and conductive component comprises at least one dynamic and conductive piece, and the dynamic and conductive piece of the dynamic and conductive component is connected with the linkage component in a reciprocating manner;

at least one conductive assembly, said conductive assembly includes a conductive body and at least one fixed conductor, two said fixed conductors can be set up in said conductive body in the electricity, at least two said fixed conductors on said conductive body are kept in the place of predetermined distance from one end of two said dynamic conductors separately;

at least one static conductive member, wherein said static conductive member is maintained at the same distance from one of said dynamic conductive members;

a housing, wherein said housing forms a mounting cavity, wherein said linkage component, said movable conducting component, said conducting component and said static conducting member are mounted to said mounting cavity, wherein said movable conducting member is driven by said linkage component, and said fixed conductor and said static conducting member are electrically conducted by one of said movable conducting member and said static conducting member, and wherein the other of said fixed conductor and said fixed conducting member is electrically conducted;

an arc extinguishing chamber formed by the arc extinguishing housing, the arc extinguishing housing having a top wall and a side wall, wherein the top wall and the side wall form the arc extinguishing chamber, the top wall of the arc extinguishing housing having at least three mounting windows, the mounting windows and the arc extinguishing chamber, the static conductive member being held at the mounting windows of the top wall of the arc extinguishing housing, two of the static conductive members being respectively disposed at the two mounting windows held at the top wall of the arc extinguishing housing, wherein the static conductive member and the static conductive member are held in the arc extinguishing chamber in electrical communication with the dynamic conductive member; and

the arc extinguishing magnets are oppositely arranged on two sides of the arc extinguishing shell, and the magnetic pole of one of the arc extinguishing magnets facing one end of the arc extinguishing shell and the magnetic pole of the other arc extinguishing magnet facing one end of the arc extinguishing shell are opposite magnetic poles.

According to the utility model discloses an embodiment, the linkage part includes a move electrically conductive piece mounting bracket and an electromagnetism linkage subassembly, two of them move electrically conductive piece be installed in move electrically conductive piece mounting bracket, move electrically conductive mounting bracket connect in but reciprocating motion the electromagnetism linkage subassembly.

According to the utility model discloses an embodiment, the electromagnetism linkage subassembly includes:

a set of coils;

a coil mount having a top support portion and a coil winding portion, the coil being mounted to an outer wall of the coil winding portion, the coil winding portion of the coil mount forming a central passage;

a linkage rod having a first end and a second end, wherein the first end is secured to the moving conductor mounting bracket;

at least one armature mounted at the second end of the linkage rod and retained with the armature in the central passage of the coil winding; and

at least one yoke, said yoke including a first yoke, wherein said first yoke has a mounting hole, said first yoke is disposed on said top supporting portion of said coil fixing frame, said first end portion of said linkage rod is fixed to said moving conductive member mounting frame after passing through said mounting hole of said first yoke.

According to an embodiment of the present invention, the electromagnetic linkage assembly includes an elastic member, the elastic member is disposed on the linkage rod, and the elastic member is compressed between the armature and the first yoke.

According to an embodiment of the present invention, the yoke includes a second yoke, wherein the second yoke has a bottom portion and two side portions, two of which the side portions extend upward integrally from opposite sides of the bottom portion to form a supporting end, respectively, the first yoke is installed behind the top supporting portion, supported by two of the side portions of the second yoke at the supporting end, and the bottom portion of the coil winding portion is installed on the bottom top surface of the second yoke.

According to the utility model discloses an embodiment, the electromagnetism linkage subassembly includes a magnetic ring and one separates the magnetic ring, the magnetic ring forms an annular channel, it forms one and holds the passageway to separate the magnetic ring, armature is kept separate the magnetic ring hold the passageway, the magnetic ring suit in separate the outside of magnetic ring, work as the coil is circular telegram back, armature quilt the gangbar the second end drives the part and shifts out annular channel, at least part armature is kept in the annular channel.

According to an embodiment of the invention, when the coil is energized, the entire one third of the armature is retained in the annular channel.

According to the utility model relates to an embodiment, the electromagnetism linkage subassembly includes a control scheme board, the coil includes a thick coil group and a thin coil group, wherein the resistance of thick coil group is less than the resistance of thin coil group, thick coil group with thin coil group is connected electrically respectively in the control scheme board when the coil just switched on, control scheme board control current only flows thick coil group and not flow to thin coil group, thick coil group circular telegram scheduled time, just move electrically conductive piece by with quiet electrically conductive piece with decide the electric conductor contact and the electric back of switching on, control scheme board control current only flows through thin coil group.

According to an embodiment of the present invention, the relay capable of extinguishing an arc includes at least two static conductive members.

According to the utility model discloses an embodiment, the relay that can go out electric arc includes an arc extinguishing bush, wherein the arc extinguishing bush set up in go out the arc shell with between the first yoke, the arc extinguishing bush has a interior convex part, move conductive piece mounting bracket the both sides of mounting bracket main part are equipped with a lateral groove respectively, interior convex part is set up and is stretched into the lateral groove.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

Fig. 1 shows a perspective view of an arc extinguishing relay according to the present invention.

Fig. 2 shows an exploded view of the arc quenching relay according to the invention.

Fig. 3 shows a cross-sectional view of an arc quenching relay according to the invention.

Fig. 4 shows a schematic diagram of the magnetic circuit flow when the arc extinguishing relay of the present invention is energized.

Fig. 5 is a perspective view showing a structure of a relay part of the arc extinguishing apparatus of the present invention.

Fig. 6 is a perspective view of the mounting frame for the dynamic conductive member in the arc extinguishing relay according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 6, an arc extinguishing relay 100 according to a preferred embodiment of the present invention will be described in detail below. The arc quenching relay 100 can be adapted for use in high voltage environments, and particularly in environments where the rated load voltage is above 750V. It should be noted that the arc-extinguishing relay 100 refers to a relay capable of generating at least two arcs in a high-voltage environment. It is understood that when the arc quenching relay 100 is applied to a low voltage environment, no arc may occur. The arc quenching relay 100 may be used in a high voltage environment as well as a low voltage environment. That is, the arc quenching relay 100 does not necessarily have to have at least two arcs present during use.

It will be appreciated by those skilled in the art that an arc may form in the relay as the voltage across the relay is greater. The larger the number of arcs, the higher the rated load voltage that the relay can withstand, but at the same time, the relay is easily damaged due to the large number of arcs, thereby affecting the durability of the relay.

The utility model discloses a relay 100 of arc that can extinguish can also make the rated load voltage that it can bear higher when having guaranteed its sensitivity. Specifically, the arc extinguishing relay 100 includes a housing 10, a linkage member 20, at least one movable conductive element 30, at least one static conductive element 40, and at least one conductive element 50. The dynamic conducting component 30 comprises at least one dynamic conducting piece 31, and preferably, the dynamic conducting component 30 comprises two dynamic conducting pieces 31.

The dynamic conductive member 31 of the dynamic conductive assembly 30 is reciprocatably connected to the interlocking part 20. The conductive assembly 50 includes a conductive body 51 and at least two stationary conductors 52. The two fixed conductors 52 are provided to the conductive body 51 so as to be electrically conductive. At least two of the stationary conductors 52 on the conductive body 51 are respectively held at a predetermined distance from one end of two of the movable conductive members 31, wherein the stationary conductive members 40 are held at the same distance from one of the movable conductive members 31. The movable conductive member 31 of the movable conductive assembly 30 is configured to be reciprocated by the interlocking member 20 in a direction toward and away from the fixed conductive body 52 and the static conductive member 40, and in a direction toward and away from the fixed conductive body 52 and the static conductive member 40. When the movable conductive member 31 is moved toward the stationary conductive member 40 and the stationary conductive member 52 by the interlocking member 20, the movable conductive member 30 and the two stationary conductive members 52 and the stationary conductive member 40 are electrically conducted, and when the arc extinguishing relay 100 is in a high-voltage environment, an arc is formed between each of the two stationary conductive members 52 and the stationary conductive member 40 and each of the two movable conductive members 31. Preferably, in the present invention, the arc extinguishing relay 100 includes two of the static conductive members 40. Therefore, when the movable conductive member 30 and the two stationary conductive members 52 and the stationary conductive member 40 are electrically conducted, and the arc extinguishing relay 100 is in a high voltage environment, at least two arcs can be formed.

As will be understood by those skilled in the art, since the arc extinguishing relay 100 can form a plurality of arcs when it is in a high voltage environment, the high voltage will be divided, and the rated voltage of the arc extinguishing relay 100 can be increased.

The linkage member 20 includes a moving conductor mounting bracket 21 and an electromagnetic linkage assembly 22. Two of the dynamic conductor pieces 31 are mounted to the dynamic conductor piece mounting bracket 21. The electrically and reciprocally conductive mounting bracket 21 is connected to the electromagnetic linkage assembly 22.

Further, the dynamic conduction assembly 30 further comprises at least two reaction members 32, wherein each reaction member 32 is disposed between each dynamic conduction member 31 and the dynamic conduction member mounting frame 21. Each of the dynamic conductor pieces 31 is provided to be reciprocatable toward the dynamic conductor piece mounting bracket 2121 and away from the dynamic conductor piece mounting bracket 21. The reaction member 32 is attached to the moving conductor member mounting bracket 21 in such a manner that the moving conductor member 31 tends to move away from the moving conductor member mounting bracket 21. Therefore, after the movable conductive member 30 contacts with the two fixed conductive bodies 52 and the static conductive member 40, the elastic potential energy of the reaction member 32 is increased, so that the movable conductive member 30 is tightly contacted with the two fixed conductive bodies 52 and the static conductive member 40, thereby improving the stability of the entire arc extinguishing relay 100. Preferably, the counterforce 32 is embodied as a helical spring.

The dynamic conduction assembly 30 further comprises at least two rivets 33, wherein each dynamic conduction component 31 is provided with a fixing hole 3101. Each of the rivets 33 is fixed to the moving conductor mounting bracket 21 after passing through the fixing hole 3101. The reaction member 32 is compressed between the dynamic conductor member 31 and the dynamic conductor member mounting bracket 21.

The housing 10 forms a mounting cavity 101, wherein the linkage member 20, the two movable conductive members 31, the stationary conductive member 40, and the conductive member 50 are hermetically disposed in the mounting cavity 101. Preferably, the housing 10 includes a housing 11 and a substrate 12, wherein the substrate 12 is covered on the housing 11, and the substrate 12 is covered on the housing 11 to form the mounting cavity 101.

Preferably, the moving conductor mounting block 21 is implemented by being made of an insulating material, wherein the conductor mounting block 21 includes a mounting block main body portion 211 and at least a pair of supporting protrusions 212, wherein the supporting protrusions 212 are respectively disposed at the bottom of the mounting block main body portion 211. The mount body portion 211 is reciprocatably coupled to the link member 20. It is worth mentioning that, when the movable conductive member 31 is moved toward the stationary conductive member 40 and the stationary conductive member 52 by the interlocking member 20, the support protrusion 212 can ensure the mounting bracket main body portion 211 to smoothly reciprocate.

More preferably, the moving conductor mounting bracket 21 further includes at least one pair of positioning protrusions 213. Preferably, the positioning protrusion 213 integrally extends from two sides of the top of the mounting frame body 211, and a positioning groove 21301 is formed on the side of the positioning protrusion 213. Each of the movable conductive members 31 has a positioning protrusion 311. The rotor 31 is mounted to the mounting block main body portion 211 of the rotor mounting block 21, and the positioning locking protrusion 311 of the rotor 31 is engaged with the lateral groove 21101. Therefore, when the moving conductor member mounting bracket 21 reciprocates along with the electromagnetic linkage assembly 20, the moving conductor member 31 does not rotate relative to the moving conductor member mounting bracket 21, thereby ensuring the stability of the whole arc extinguishing relay 100.

Further, the electromagnetic linkage assembly 22 includes a coil fixing frame 221, a set of coils 222, at least one armature 223, at least one yoke 224 and a linkage rod 225. The coil fixing frame 221 has a top supporting portion 2211 and a coil winding portion 2212. The coil 222 is attached to an outer wall of the coil winding portion 2212. The coil winding portion 2212 of the coil holder 221 forms a central passage 221201. The linkage bar 225 has a first end 2251 and a second end 2252. The armature 223 is mounted at the second end 2252 of the linkage bar 225, and the second end 2252 of the linkage bar 225 is retained with the armature 223 in the central passage 221201 of the coil winding portion 2212.

The yoke 224 includes a first yoke 2241, wherein the first yoke 2241 has a mounting hole 22401. The first yoke 2241 is disposed on the top support portion 2211 of the coil fixing frame 221, and the first end 2251 of the linkage rod 225 is fixed to the moving-conductive member mounting frame 21 after passing through the mounting hole 22401 of the first yoke 2241.

It is understood that when the coil 222 is energized, the armature 223 is attracted by the first yoke 2241 to move the linkage rod 225 together toward the static conductive member 40, so that the dynamic conductive member 31 mounted on the dynamic conductive member mounting bracket 21 is electrically connected to the static conductive member 40 and the static conductive member 52. Conversely, when the coil 222 is de-energized, the attraction force of the armature 223 by the first yoke 2241 disappears, so that the movable conductive member 31 mounted on the movable conductive member mounting bracket 21 is separated from the stationary conductive member 40 and the stationary conductive member 52.

Further, the electromagnetic linkage assembly 22 further includes an elastic member 226. The elastic member 226 is disposed on the linkage rod 225, and the elastic member 226 is compressed between the armature 223 and the first yoke 2241, so that the movable conductive member 31 mounted on the movable conductive member mounting bracket 21 is kept separated from the stationary conductive member 40 and the stationary conductive member 52 before the coil 222 is not energized. In addition, after the coil 222 is de-energized, the attraction force of the armature 223 by the first yoke 2241 disappears, and the movable conductive member 30 mounted on the movable conductive member mounting bracket 21 can be quickly separated from the stationary conductive member 40 and the stationary conductive member 52 by the elastic member 226, which makes the entire arc extinguishing relay 100 more sensitive. Preferably, the elastic element 226 is implemented as a helical spring, wherein said helical spring is sleeved between the first end 2251 and the second end 2252 of the linkage bar 225.

Further, the yoke 224 further comprises a second yoke 2242, wherein the second yoke 2242 has a bottom 22421 and two side portions 22422, wherein the two side portions 22422 integrally extend upward from two opposite sides of the bottom 22421 to form a supporting end 2242201 respectively. After the first yoke 2242 is mounted on the top support 2211, it is further supported by the support ends 2242201 of the side portions 22422 of the second yoke 2242. The bottom of the coil winding portion 2212 is attached to the top surface of the bottom 22421 of the second yoke 2242.

It should be noted that when the coil 222 is energized, the second yoke 2242 can simultaneously form a force that drives the armature 223 to drive the linkage rod 225 to move toward the direction close to the static conductive member 40, so as to improve the sensitivity of the entire arc extinguishing relay 100.

In addition, the electromagnetic linkage assembly 22 further includes a magnetic conductive ring 227 and a magnetism isolating ring 228. The magnetic conductive ring 227 forms an annular channel 22701. The magnetism isolating ring 228 forms a receiving passage 22801. The magnetism isolating ring 228 is sleeved outside the armature 223 of the second end 2252 of the linkage rod 225, such that the armature 223 is received in the receiving passage 22801. The flux ring 227 is fitted around the outside of the flux ring 228 such that the flux ring 228 is received in the annular passage 22701, i.e., the armature 223 is at least partially received in the flux ring 228. It is worth mentioning that at least part of the armature 223 is retained in the annular channel 22701 when the coil 222 is energized. Preferably, one third of the entire armature 223 is retained in the annular channel 22701 when the coil 222 is energized. This ensures that the armature 223 and the magnetic conductive ring 227 are properly overlapped, and that there is an annular magnetic gap between the magnetic conductive ring 227 and the armature 223, and that there is only a magnetic gap between the armature 223 and the first yoke 2241 in the axial direction, thereby improving the magnetic conversion efficiency, refer to fig. 4.

The electromagnetic linkage assembly 22 includes a control circuit board 229. The coil 222 includes a thick coil set 2221 and a thin coil set 2222, wherein the resistance of the thick coil set 2221 is much smaller than the resistance of the thin coil set 2222. The thick coil group 2221 and the thin coil group 2222 are electrically connected to the control circuit board 229, respectively. When the coil 222 is just energized, the control circuit board 229 controls the current to flow through the thick coil set 2221 without flowing to the thin coil set 2222, so that the armature 223 has a larger magnetic force attracting the first yoke 2241, thereby improving the sensitivity of the arc extinguishing relay 100. After the thick coil group 2221 is energized for a predetermined time and the movable conductor 31 is electrically conducted by being in contact with the stationary conductor 40 and the fixed conductor 52, the control circuit board 229 controls a current to flow to the thin coil group 2222 without flowing to the thick coil group 2221, so that the movable conductor 31 maintains a state of being in contact with the stationary conductor 40 and the fixed conductor 52.

As can be appreciated by those skilled in the art, the power consumption can be effectively reduced by the way the thick coil set 2221 and the thin coil set 2222 are matched with each other.

Further, the arc-extinguishing relay 100 includes an arc-extinguishing case 60 and at least one pair of arc-extinguishing magnets 70. The arc extinguishing chamber 60 has a top wall 61 and a side wall 62. Preferably, the side wall 62 is integrally formed extending from the top wall 61. The arc extinguishing chamber 60 forms an arc extinguishing chamber 601. The stationary and static conductors are held in the arc-extinguishing chamber 601 in electrical communication with the movable conductor 31.

The arc extinguishing chamber 601 is mounted to the first yoke 2241. The dynamic conducting component 30 is covered on the arc extinguishing chamber 601 by the arc extinguishing chamber 60. The top wall 61 of the arc extinguishing chamber 60 is provided with at least three mounting windows 602. The mounting window 602 communicates with the arc extinguishing chamber 601. The static conductive member 40 is held at the mounting window 602 of the top wall 61 of the arc extinguishing chamber 60. The two fixed conductors 52 of the conductive assembly 50 are respectively disposed and held at the two mounting windows 602 of the top wall 61 of the arc extinguishing chamber 60.

The quenching magnets 70 are oppositely disposed at both sides of the arc extinguishing chamber 60, and the magnetic pole of one quenching magnet 70 facing one end of the arc extinguishing chamber 60 and the magnetic pole of the other quenching magnet 70 facing one end of the arc extinguishing chamber 60 are opposite magnetic poles. In other words, the movable conductive member 31, the static conductive member 40 and the fixed conductive member 52 in the arc extinguishing chamber 601 are all maintained within the coverage of the magnetic lines formed by the pair of the arc extinguishing magnets 70. In this way, when the movable conductive member 31 is brought into contact with the stationary conductive member 40 and the stationary conductive member 52 to be electrically conducted, the movable conductive member 31 is guided to the inside of the side wall 62 of the arc extinguishing case 60 to be extinguished by the magnetic force of the arc extinguishing magnet 70 when a part of the arc is generated between the movable conductive member 31 and the stationary conductive member 40 and the stationary conductive member 52. It is worth mentioning that the coil fixing frame 221 includes a pair of supporting step portions 2213, wherein the supporting step portions 2213 integrally extend a predetermined distance from opposite sides of the top supporting portion 2211. The pair of the quenching magnets 70 are respectively provided to the pair of the supporting step portions 2213, so that the quenching magnets 70 are held at both sides opposite to the arc extinguishing chamber 60, and the generated arc receives a larger bias magnetic force after the movable conductive member 31 is electrically conducted to the stationary conductive member 40 and the stationary conductive member 52.

Preferably, the arc extinguishing chamber 60 is made of a ceramic material.

It is worth mentioning that the arc extinguishing chamber 601 is a sealed chamber. In one embodiment of the present invention, the arc extinguishing chamber 60 has a bottom wall, wherein a through hole is formed on the bottom wall. The bottom wall of the arc extinguishing chamber 60 is disposed on top of the first yoke 2241. The first end 2251 of the linkage bar 225 is arranged to be connected to the moving conductor mounting bracket 21 through the through-going bore.

In another embodiment of the present invention, the side wall 62 of the arc extinguishing chamber 60 forms an opening 603, wherein the arc extinguishing chamber 60 is sealingly mounted on top of the first yoke 2241. The first end 2251 of the linkage 225 is arranged to be connected to the moving conductor mounting bracket 21 through the opening 603.

Preferably, the arc extinguishing relay 100 further comprises at least one arc extinguishing liner 80, wherein the arc extinguishing liner 80 is disposed between the arc extinguishing housing 60 and the first yoke 2241, so that a seal is maintained between the opening 603 of the arc extinguishing housing 60 and the first yoke 2241.

It is worth mentioning that the arc-extinguishing bushing 80 has an inner convex portion 81. A lateral groove 21101 is formed on each of two sides of the mounting bracket body 211 of the moving-conducting device mounting bracket 21. The inner protrusion 81 is configured to extend into the lateral recess 21101 to prevent the rotating of the moving conductor mounting bracket 21 relative to the linkage rod 225 during the reciprocating motion.

Preferably, the arc extinguishing chamber 601 is filled with a nitrogen-hydrogen mixed gas.

More preferably, the arc-quenching relay 100 includes a sealing ring 90, wherein the sealing ring 90 is disposed between the arc-quenching housing 60 and the arc-quenching bushing 80 such that the arc-quenching chamber 601 forms the sealed chamber.

In an embodiment of the present invention, the arc extinguishing relay 100 includes two static conductive members 40, specifically, a first static conductive member 41 and a second static conductive member 42. After the dynamic conducting component 30 and the two fixed conductors 52 and the static conducting components 40 are electrically conducted, the current flows from the first static conducting component 41 to one dynamic conducting component 31, then flows through the conducting component 50, and then flows to the first static conducting component 41 through the other dynamic conducting component 31.

It is worth mentioning that the dynamic conductive component 30 and the two stationary conductive bodies 52 and the static conductive member 40 are electrically conducted, and at least two electric arcs occur when the arc extinguishing relay 100 is under a high voltage environment, wherein the two electric arcs occur between the dynamic conductive component 30 and the opposite static conductive member 40, respectively. However, the occurring arc is guided by the quenching magnets 70 to be respectively deflected to both sides of the inner wall of the arc extinguishing chamber 60 to be quenched. If an arc is also formed between the movable conducting component 30 and the fixed conductor 52, the arc formed between the movable conducting component 30 and the fixed conductor 52 is guided toward the center of the arc extinguishing casing 60 and extinguished because the current flows through one of the movable conducting members 31 from the first fixed conducting member 41, then through the conducting component 50, and then through the other movable conducting member 31 to the first fixed conducting member 41.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. An arc-quenching relay, wherein said arc-quenching relay comprises:

a linkage member;

2. The arc quenching relay of claim 1, wherein the linkage member comprises a moving conductive member mounting bracket to which two of the moving conductive members are mounted and an electromagnetic linkage assembly to which the moving conductive mounting bracket is reciprocally coupled.

3. The arc quenching relay of claim 2, the electromagnetic linkage assembly comprising:

a set of coils;

4. The arc quenching relay of claim 3, wherein the electromagnetic linkage assembly comprises a spring disposed on the linkage rod and compressed between the armature and the first yoke.

5. The arc extinguish relay according to claim 3, wherein the yoke comprises a second yoke, wherein the second yoke has a bottom portion and two side portions, wherein the two side portions integrally extend upward from opposite sides of the bottom portion to form a support end, respectively, the first yoke is mounted on the top support portion and supported on the support ends of the two side portions of the second yoke, and the coil winding portion bottom portion is mounted on a bottom top surface of the second yoke.

6. The arc quenching relay of claim 5 wherein the electromagnetic linkage assembly includes a magnetic conductive ring and a magnetic isolating ring, the magnetic conductive ring defining an annular channel, the magnetic isolating ring defining a receiving channel, the armature being retained in the receiving channel of the magnetic isolating ring, the magnetic conductive ring being sleeved outside the magnetic isolating ring, the armature being partially moved out of the annular channel by the second end of the linkage rod when the coil is energized, at least a portion of the armature being retained in the annular channel.

7. The arc quenching relay of claim 6 wherein one third of the entire armature is retained in the annular channel when the coil is energized.

8. The arc extinguish relay of claim 1, wherein the arc extinguish relay comprises at least two of the static conductive members.

9. The arc quenching relay of claim 3, wherein the electromagnetic linkage assembly comprises a control circuit board, the coils comprise a thick coil set and a thin coil set, wherein the thick coil set has a smaller resistance than the thin coil set, the thick coil set and the thin coil set are electrically connected to the control circuit board, respectively, the control circuit board controls the current to flow only through the thick coil set and not to flow to the thin coil set when the coils are just energized, the thick coil set is energized for a predetermined time, and the control circuit board controls the current to flow only through the thin coil set after the movable conductive member is electrically conducted by being in contact with the stationary conductive member and the stationary conductive member.

10. The arc suppressible relay according to claim 5, wherein said arc suppressible relay includes an arc suppressing bushing, wherein said arc suppressing bushing is disposed between said arc suppressing case and said first yoke, said arc suppressing bushing has an inner protrusion, said moving conductive member mounting bracket has a mounting bracket main body portion, said moving conductive member mounting bracket is provided with a lateral groove on both sides of said mounting bracket main body portion, respectively, said inner protrusion is disposed to protrude into said lateral groove.