WO2024078542A1 - 继电器 - Google Patents

继电器 Download PDF

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Publication number
WO2024078542A1
WO2024078542A1 PCT/CN2023/124058 CN2023124058W WO2024078542A1 WO 2024078542 A1 WO2024078542 A1 WO 2024078542A1 CN 2023124058 W CN2023124058 W CN 2023124058W WO 2024078542 A1 WO2024078542 A1 WO 2024078542A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic conductor
magnetic
contact
assembly
connecting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/124058
Other languages
English (en)
French (fr)
Inventor
代文广
王萌
苏礼季
陈松生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hongfa Electric Power Controls Co Ltd
Original Assignee
Xiamen Hongfa Electric Power Controls Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Hongfa Electric Power Controls Co Ltd filed Critical Xiamen Hongfa Electric Power Controls Co Ltd
Priority to EP23876743.8A priority Critical patent/EP4604164A4/en
Priority to KR1020257015485A priority patent/KR20250087653A/ko
Priority to JP2025521230A priority patent/JP2025533270A/ja
Publication of WO2024078542A1 publication Critical patent/WO2024078542A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Definitions

  • the present disclosure relates to a relay.
  • 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.
  • High-voltage DC relay is a type of relay.
  • an anti-short-circuit ring electromagnetic structure is usually set in the relevant technology. It is further divided into a follower structure and a fixed structure according to the position of the upper yoke.
  • the follower structure refers to the upper yoke being set on the movable component of the relay
  • the fixed structure refers to the upper yoke being set at a fixed position other than the movable component.
  • the short-circuit resistance of the fixed anti-short-circuit structure is greatly enhanced, the short-circuit resistance and breaking resistance are negatively correlated, resulting in a weakened breaking resistance.
  • the follower anti-short-circuit structure is affected by the holding force of the moving iron core. When the short-circuit current is high, the iron core will be disengaged, causing the contacts to be disconnected. To increase the holding force of the moving iron core, the coil needs to be increased, which is inconsistent with the small volume and lightweight.
  • the embodiment of the present disclosure provides a relay to take into account both short-circuit resistance and ultimate breaking capacity.
  • a relay of an embodiment of the present disclosure includes a contact container, a pair of static contact lead-out terminals, a first magnetic conductor, a push rod assembly, a movable contact assembly and an elastic member, wherein the contact container has a contact chamber; a pair of static contact lead-out terminals are connected to the contact container, and at least a portion of each of the static contact lead-out terminals is located in the contact chamber; the first magnetic conductor is disposed in the contact chamber; the first magnetic conductor includes a connecting portion and a magnetic conductor connected to the connecting portion, and the first magnetic conductor is fixedly disposed relative to the contact container through the connecting portion; the push rod assembly includes a rod portion and a second magnetic conductor; the rod portion is relative to the The contact container is movable along the axial direction of the rod portion, and the second magnetic conductor is arranged at one end of the rod portion.
  • the second magnetic conductor is staggered with the magnetic conductor and corresponds to the connecting portion;
  • the moving contact assembly is movable relative to the push rod assembly along the axial direction of the rod portion, between a first position close to the static contact lead-out end and a second position away from the static contact lead-out end, and the moving contact assembly includes a moving reed and a third magnetic conductor, the first magnetic conductor and the second magnetic conductor are arranged on a side of the moving reed facing the static contact lead-out end, and the third magnetic conductor is fixed along the axial direction of the rod portion.
  • the third magnetic conductor and the first magnetic conductor are used to form a first magnetic conductive circuit
  • the third magnetic conductor and the second magnetic conductor are used to form a second magnetic conductive circuit
  • the distance between the third magnetic conductor and the connecting portion is greater than the distance between the third magnetic conductor and the magnetic conductive portion.
  • an elastic member connects the movable contact assembly and the push rod assembly, and is used to apply an elastic force to the movable contact assembly to move toward the first position.
  • the magnetic conductive portion and the connecting portion are an integral structure, and the magnetic conductive portion extends from the connecting portion toward the movable reed.
  • the first magnetic conductor includes two oppositely disposed magnetic conductors, and the two magnetic conductors are respectively connected to two opposite sides of the connecting portion along the length direction of the movable spring sheet, so that the first magnetic conductor forms an inverted U shape.
  • the magnetic distance between the magnetic conductive portion and the third magnetic conductive body is greater than the magnetic distance between the second magnetic conductive body and the third magnetic conductive body.
  • the second magnetic conductor when the movable contact assembly is in the first position, the second magnetic conductor is in direct contact with the third magnetic conductor.
  • the push rod assembly also includes a support seat, which is fixedly disposed at one end of the rod portion along the axial direction and at least partially extends into the contact chamber, the second magnetic conductor is fixedly connected to the support seat, and the elastic member is disposed between the moving contact assembly and the support seat.
  • the support seat comprises:
  • a base connected to one end of the rod, wherein the elastic member is disposed between the base and the moving contact assembly;
  • the bracket is connected to the base; the second magnetic conductor is connected to the inner wall surface of the bracket, and the movable spring sheet and the third magnetic conductor are movably arranged in the space surrounded by the base and the bracket.
  • the bracket comprises:
  • a top portion wherein the second magnetic conductor is connected to an inner wall surface of the top portion;
  • the two side portions are respectively connected to the two sides of the top and extend from the top toward the base; the ends of the two side portions away from the top are respectively connected to the base, and the two side portions, the top and the base together form a space for the moving contact assembly to move.
  • the contact container further has a pair of first through holes and a second through hole, the first through hole and the second through hole are both connected to the contact chamber; a pair of static contact lead terminals are respectively provided through the pair of first through holes;
  • the relay further includes a connecting member, which is passed through the second through hole and includes a first end and a second end, wherein the first end is connected to the contact container, and the second end is connected to the connecting portion.
  • the contact container comprises:
  • the insulating cover comprises a top wall and a side wall, wherein one end of the side wall is connected to the periphery of the top wall, and the other end of the side wall is connected to the yoke iron plate;
  • first through hole and the second through hole are opened in the top wall, and the first end of the connecting member is connected to the outer wall surface of the top wall.
  • the insulating cover includes a ceramic cover and a frame sheet, the ceramic cover includes the top wall and the side wall, and the other end of the side wall is connected to the yoke plate through the frame sheet;
  • a first metallization layer is provided at the periphery of the first through hole, and a second metallization layer is provided at the periphery of the second through hole;
  • the static contact lead-out terminal is welded to the top wall through the first metallization layer, and the first end of the connector is welded to the top wall through the second metallization layer.
  • the top wall and the side wall are an integral structure; or, the top wall and the side wall are separate structures and are connected by welding.
  • the connecting portion is spaced apart from the inner wall surface of the top wall.
  • the contact container comprises:
  • the relay further includes a fixing frame, which is disposed in the contact chamber and fixedly connected to the yoke plate, and the connecting portion is fixedly connected to the fixing frame.
  • the first magnetic conductor is fixedly arranged relative to the contact container, and a fixed anti-short-circuit structure is formed between the magnetic portion and the third magnetic conductor, a follow-up anti-short-circuit structure is formed between the second magnetic conductor and the third magnetic conductor of the push rod assembly, the magnetic portion of the first magnetic conductor and the second magnetic conductor are staggered along the axial direction of the rod, and the connecting portion of the first magnetic conductor corresponds to the second magnetic conductor along the axial direction of the rod. While meeting the requirements of anti-short-circuit and limit disconnection, the first magnetic conductor does not occupy too much space along the axial direction perpendicular to the rod, which is beneficial to reducing the volume of the relay.
  • FIG. 1 is a perspective schematic diagram of a relay according to the present disclosure.
  • FIG. 2 is a schematic diagram showing FIG. 1 with the ceramic cover and the frame removed.
  • FIG. 3 is a schematic top view of FIG. 1 .
  • FIG. 4 shows a cross-sectional view taken along line A-A in FIG. 3 .
  • FIG. 5 is an exploded schematic diagram of FIG. 1 .
  • FIG6 shows a cross-sectional view taken along line B-B in FIG3 , wherein the ceramic cover, frame sheet and connector are omitted and the overtravel is completed.
  • FIG7 shows a cross-sectional view taken along line C-C in FIG3 , wherein the ceramic cover, frame sheet and connector are omitted and the overtravel is completed.
  • FIG8 shows a cross-sectional view taken along line A-A in FIG3 , wherein the ceramic cover, frame sheet and connector are omitted and the overtravel is completed.
  • FIG9 shows a cross-sectional view taken along line B-B in FIG3 , wherein the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • FIG10 shows a cross-sectional view taken along line C-C in FIG3 , wherein the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • FIG11 shows a cross-sectional view taken along line A-A in FIG3 , in which the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • FIG. 12 is an exploded schematic diagram of a relay according to an embodiment of the present disclosure.
  • a structure When a structure is "on" other structures, it may mean that A certain structure is formed integrally with another structure, or it means that the certain structure is “directly” disposed on the other structure, or it means that the certain structure is “indirectly” disposed on the other structure via another structure.
  • FIG. 12 shows an exploded schematic diagram of a relay according to an embodiment of the present disclosure.
  • the relay includes a housing 1100, an electromagnet unit 1200, an arc extinguishing unit 1300, and a sealing unit 1400.
  • the sealing unit 1400 is disposed in the housing 1100, and the top of the static contact lead-out terminal 20 of the sealing unit 1400 is exposed to the outer surface of the housing 1100 through the exposure hole 1130 of the housing 1100.
  • the electromagnet unit 1200 and the arc extinguishing unit 1300 are both disposed in the housing 1100.
  • the housing 1100 includes a first shell 1110 and a second shell 1120 , which are snap-connected to form a chamber for accommodating the electromagnet unit 1200 , the arc extinguishing unit 1300 , and the sealing unit 1400 .
  • the arc extinguishing unit 1300 is used to extinguish the arc generated between the static contact lead-out terminal 20 of the sealing unit 1400 and the moving reed piece 54 .
  • the arc extinguishing unit 1300 includes two arc extinguishing magnets 1310.
  • the arc extinguishing magnets 1310 may be permanent magnets, and each arc extinguishing magnet 1310 may be substantially rectangular.
  • the two arc extinguishing magnets 1310 are respectively disposed on both sides of the sealing unit 1400 and are disposed opposite to each other along the length direction D2 of the movable spring piece 54.
  • a magnetic field can be formed around the static contact lead-out terminal 20 and the movable reed piece 54. Therefore, the arc generated between the static contact lead-out terminal 20 and the movable reed piece 54 is stretched in a direction away from each other by the action of the magnetic field, thereby achieving arc extinguishing.
  • the arc extinguishing unit 1300 also includes two yoke iron clips 1320, and the two yoke iron clips 1320 are arranged corresponding to the positions of the two arc extinguishing magnets 1310.
  • the two yoke iron clips 1320 surround the sealing unit 1400 and the two arc extinguishing magnets 1310.
  • the yoke iron clips 1320 are made of soft magnetic materials. Soft magnetic materials may include but are not limited to iron, cobalt, nickel, and alloys thereof.
  • Figure 1 shows a three-dimensional schematic diagram of a relay of the first embodiment of the present disclosure.
  • Figure 2 shows a schematic diagram of Figure 1 without the ceramic cover 11 and the frame sheet 12.
  • Figure 3 shows a top view of Figure 1.
  • Figure 4 shows a cross-sectional view of A-A in Figure 3.
  • Figure 5 shows an exploded schematic diagram of Figure 1.
  • the sealing unit 1400 of the embodiment of the present disclosure includes a contact container 10 , a pair of static contact lead-out terminals 20 , a first magnetic conductor 40 , a push rod assembly 50 , a movable contact assembly 53 and an elastic member 56 .
  • the contact container 10 has a contact chamber 101 therein.
  • the contact container 10 may include an insulating cover 11 a and a yoke plate 13 .
  • the insulating cover 11 a is disposed on one side surface of the yoke plate 13 .
  • the insulating cover 11 a and the yoke plate 13 together enclose the contact chamber 101 .
  • the insulating cover 11a includes a ceramic cover 11 and a frame piece 12.
  • the ceramic cover 11 is connected to the yoke iron plate 13 through the frame piece 12.
  • the frame piece 12 can be a metal piece with an annular structure, such as an iron-nickel alloy, and one end of the frame piece 12 is connected to the opening edge of the ceramic cover 11, for example, by laser welding, brazing, resistance welding, gluing, etc.
  • the other end of the frame piece 12 is connected to the yoke iron plate 13, also by laser welding, brazing, resistance welding, gluing, etc.
  • a frame piece 12 is arranged between the ceramic cover 11 and the yoke iron plate 13, which can facilitate the connection between the ceramic cover 11 and the yoke iron plate 13.
  • the ceramic cover 11 includes a top wall 111 and a side wall 112. One end of the side wall 112 is connected to the top wall 111, and the other end of the side wall 112 is connected to the yoke plate 13 through the frame sheet 12. In this embodiment, the other end of the side wall 112 is connected to the yoke plate 13 through the frame sheet 12.
  • the contact container 10 also has a pair of first through holes 102 and a second through hole 103, both of which are connected to the contact chamber 101.
  • the first through hole 102 is used for the static contact lead-out terminal 20 to pass therethrough
  • the second through hole 103 is used for a connector 30 to pass therethrough.
  • first through hole 102 and the second through hole 103 are both opened in the top wall 111 of the ceramic cover 11.
  • the second through hole 103 can be arranged between the two first through holes 102, that is, the connecting member 30 is arranged between a pair of static contact lead-out terminals 20.
  • the number of the second through holes 103 may be two, for two connecting members 30 to pass through, but the present invention is not limited thereto.
  • a pair of static contact lead-out terminals 20 are connected to the contact container 10, and at least a portion of each static contact lead-out terminal 20 is located in the contact chamber 101.
  • One of the pair of static contact lead-out terminals 20 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 20 are disposed in a pair of first through holes 102 in a one-to-one correspondence, and are connected to the top wall 111 of the ceramic cover 11 , for example, by welding.
  • the bottom of the static contact lead-out terminal 20 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 20 .
  • the first magnetic conductor 40 is disposed in the contact chamber 101 and fixed relative to the contact container 10.
  • the first magnetic conductor 40 includes a connecting portion 410 and a magnetic conductor 420 connected to the connecting portion 410.
  • the first magnetic conductor 40 is fixed relative to the contact container 10 through the connecting portion 410, and the magnetic conductor 420 is used to form a magnetic circuit with the third magnetic conductor 55.
  • the push rod assembly 50 is movably connected to the contact container 10 along the movement direction D1.
  • the push rod assembly 50 includes a rod portion 51, a support seat 52, and a second magnetic conductor 60.
  • the rod portion 51 is movable relative to the contact container 10 along the axial direction of the rod portion 51 (i.e., along the movement direction D1)
  • the support seat 52 is fixedly arranged at one end of the rod portion 51 along the axial direction, and at least partially extends into the contact chamber 101
  • the second magnetic conductor 60 is fixedly connected to the support seat 52.
  • the second magnetic conductor 60 is staggered with the magnetic conductor portion 420 and corresponds to the connecting portion 410.
  • the second magnetic conductor 60 corresponds to the connecting portion 410, which means that along the axial direction of the rod 51, the orthographic projection of the second magnetic conductor 60 relative to the movable spring piece 54 does not overlap with the orthographic projection of the magnetic conductor 420 relative to the movable spring piece 54.
  • the second magnetic conductor 60 corresponds to the connecting portion 410, which means that along the axial direction of the rod 51, the orthographic projection of the second magnetic conductor 60 relative to the movable spring piece 54 at least partially overlaps with the orthographic projection of the magnetic conductor 420 relative to the movable spring piece 54.
  • the second magnetic conductor 60 and the support seat 52 may be fixed to each other by riveting, but the present invention is not limited thereto.
  • the yoke plate 13 has a third through hole 131 which penetrates two opposite sides of the yoke plate 13 along the thickness direction of the yoke plate 13 and communicates with the contact chamber 101 of the contact container 10.
  • the rod 51 is axially movably disposed in the third through hole 131.
  • the push rod assembly 50 may also be other structures in the prior art, which are not listed here one by one.
  • the moving contact assembly 53 is movable relative to the push rod assembly 50 along the axial direction of the rod portion 51 between a first position close to the static contact lead-out terminal 20 and a second position away from the static contact lead-out terminal 20.
  • the moving contact assembly 53 includes a moving reed 54 and a third magnet 55.
  • the first magnet 40 and the second magnet 60 are located on the side of the moving reed 54 facing the static contact lead-out terminal 20.
  • the third magnet 55 is fixedly connected to the side of the moving reed 54 away from the first magnet 40 and the second magnet 60.
  • the first magnet 40 and the second magnet 60 are located on one side of the moving reed 54, and the third magnet 55 is located on the other side of the moving reed 54.
  • the distance between the third magnet 55 and the connecting portion 410 is greater than the distance between the third magnet 55 and the magnet portion 420.
  • first position and second position in which the movable contact assembly 53 is movable between the first position and the second position along the axial direction of the rod portion 51 relative to the push rod assembly 50 refer to the relative positions of the movable contact assembly 53 and the push rod assembly 50 .
  • the electromagnet unit 1200 when the electromagnet unit 1200 is energized, it can drive the rod 51, the support seat 52 and the moving contact assembly 53 to move toward the static contact lead-out terminal 20.
  • the moving contact assembly 53 contacts the static contact lead-out terminal 20
  • the moving contact assembly 53 is stopped by the static contact lead-out terminal 20, while the rod 51 and the support seat 52 continue to move upward until the overtravel process is completed.
  • the overtravel process relative movement occurs between the moving contact assembly 53 and the push rod assembly 50.
  • the push rod assembly 50 will move upward relative to the moving contact assembly 53. If the push rod assembly 50 is defined as stationary during the overtravel process, the moving contact assembly 53 will move downward relative to the push rod assembly 50.
  • the moving contact assembly 53 is located at the first position relative to the push rod assembly 50, that is, the moving contact assembly 53 is close to the static contact lead-out terminal 20 relative to the push rod assembly 50.
  • the moving contact assembly 53 moves downward relative to the push rod assembly 50, that is, the moving contact assembly 53 moves relative to the push rod assembly 50 in a direction away from the static contact lead-out terminal 20, until the moving contact assembly 53 moves to the second position relative to the push rod assembly 50.
  • the moving contact assembly 53 moves downward relative to the push rod assembly 50, that is, the moving contact assembly 53 moves relative to the push rod assembly 50 in a direction away from the static contact lead-out terminal 20, until the moving contact assembly 53 moves to the second position relative to the push rod assembly 50.
  • the overtravel is completed.
  • the compression amount of the elastic member 56 is at a maximum value.
  • the third magnetic conductor 55 and the movable spring 54 may be fixed by riveting, but the present invention is not limited thereto.
  • first magnetic conductor 40 the second magnetic conductor 60 and the third magnetic conductor 55 can all be made of materials such as iron, cobalt, nickel, and alloys thereof.
  • the second magnetic conductor 60 may be in a straight line shape, and the first magnetic conductor 40 and the third magnetic conductor 55 may be in a U shape, but the present invention is not limited thereto.
  • first magnetic conductor 40, the second magnetic conductor 60 and the third magnetic conductor 55 can be designed to include a plurality of stacked magnetic conductor sheets as required.
  • the two ends of the moving spring 54 are used to contact the bottom of a pair of static contact lead-out terminals 20 to achieve contact closure.
  • the two ends of the moving spring 54 along its length direction D2 can serve as moving contacts.
  • the moving contacts at the two ends of the moving spring 54 can protrude from other parts of the moving spring 54, or can be flush with other parts.
  • the moving contact can be integrally or separately provided at both ends of the moving reed piece 54 along the length direction D2 thereof.
  • the elastic member 56 is disposed between the movable contact assembly 53 and the support seat 52 , and is used to apply an elastic force to the movable contact assembly 53 to move toward the first position.
  • the elastic member 56 may be a spring, but is not limited thereto.
  • one end of the elastic member 56 abuts against the support base 52 , and the other end abuts against the third magnetic conductor 55 of the movable contact assembly 53 .
  • a through hole may be provided on the third magnetic conductor 55 , and the elastic member 56 passes through the through hole and abuts against the movable spring piece 54 .
  • the support seat 52 includes a base 521 and a bracket 522.
  • the base 521 is connected to one end of the rod 51 along the axial direction, and the bracket 522 is connected to the base 521.
  • the second magnet 60 is connected to the inner wall surface of the bracket 522, the movable spring 54 and the third magnet 55 are movably arranged between the base 521 and the bracket 522, and one end of the elastic member 56 abuts against the base 521, and the other end abuts against the third magnet 55.
  • the bracket 522 may be in an inverted U shape and be engaged with the base 521.
  • the base 521 and the bracket 522 together form a chamber, which is used to accommodate the moving contact assembly 53 and the elastic member 56.
  • the bracket 522 may include a top 523 and two side portions 524, the two side portions 524 are respectively connected to the two sides of the top 523, and extend from the top 523 toward the base 521, so that the bracket 522 forms an inverted U shape.
  • One end of the two side portions 524 away from the top 523 is respectively connected to the base 521.
  • a space is formed between the two side portions 524 for the movable spring 54 and the third magnetic conductor 55 to pass through and move.
  • the second magnetic conductor 60 is connected to the inner wall surface of the top 523.
  • the movable spring 54 When the movable spring 54 is not in contact with the static contact lead-out terminal 20 or the movable spring 54 has just been in contact with the static contact lead-out terminal 20, the movable spring 54 abuts against the second magnetic conductor 60 under the elastic force of the elastic member 56.
  • the static contact lead-out terminal 20 stops the movable contact assembly 53 (the movable spring 54 and the third magnetic conductor 55) and keeps the movable contact assembly 53 stationary, while the rod 51 drives the support seat 52 together with the second magnetic conductor 60 to continue to move upward, and at this time, the movable contact assembly 53 and the base 521 jointly squeeze the elastic member 56.
  • the second magnetic conductor 60 may not be fixedly connected to the bracket 522 of the support seat 52, but may be fixedly connected to one end of the rod 51.
  • the moving contact assembly 53 may be provided with a through hole, the rod 51 is passed through the through hole of the moving contact assembly 53, and the second magnetic conductor 60 is provided at one end of the rod 51.
  • the sealing unit 1400 further includes a metal cover 1410, which is connected to the side of the yoke plate 13 facing away from the insulating cover 11a, and the metal cover 1410 covers the third through hole 131 on the yoke plate 13.
  • the metal cover 1410 and the yoke plate 13 enclose a chamber for accommodating the static iron core and the moving iron core 1240 of the electromagnet unit 1200, which will be described in detail below.
  • the electromagnet unit 1200 includes a coil frame 1210, a coil 1220, a static iron core (not shown in the figure), a moving iron core 1240 and a reset member 1250.
  • the coil frame 1210 is in the shape of a hollow cylinder and is formed of an insulating material.
  • the metal cover 1410 is inserted into the coil frame 1210.
  • the coil 1220 surrounds the coil frame 1210.
  • the static iron core is fixedly arranged in the metal cover 1410, and part of the static iron core extends into the third through hole 131.
  • the static iron core has a perforation, which is arranged corresponding to the position of the third through hole 131 for the rod 51 to pass therethrough.
  • the moving iron core 1240 is movably arranged in the metal cover 1410 and arranged opposite to the static iron core.
  • the moving iron core 1240 is connected to the rod 51.
  • the moving iron core 1240 and the rod portion 51 may be connected by screwing, riveting, welding or other methods.
  • the reset member 1250 is located inside the metal cover 1410 and is disposed between the static iron core and the movable iron core 1240 to reset the movable iron core 1240 when the coil 1220 is powered off.
  • the reset member 1250 may be a spring and is sleeved outside the rod 51 .
  • Figure 6 shows a cross-sectional view of B-B in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the overtravel is completed.
  • Figure 7 shows a cross-sectional view of C-C in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the overtravel is completed.
  • Figure 8 shows a cross-sectional view of A-A in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the overtravel is completed.
  • a first magnetic conductive loop is formed between the first magnetic conductive body 40 and the third magnetic conductive body 55, so a magnetic attraction force is generated between the first magnetic conductive body 40 and the third magnetic conductive body 55.
  • a second magnetic conductive loop is formed between the second magnetic conductive body 60 and the third magnetic conductive body 55, so a magnetic attraction force is generated between the second magnetic conductive body 60 and the third magnetic conductive body 55. Since the first magnetic conductive body 40 is fixedly arranged relative to the contact container 10, when a short-circuit current is passed, a fixed anti-short-circuit structure is formed between the first magnetic conductive body 40 and the third magnetic conductive body 55, and the holding force of the fixed anti-short-circuit structure is provided by the contact container 10.
  • the second magnetic conductive body 60 Since the second magnetic conductive body 60 is fixedly connected to the support seat 52 of the push rod assembly 50, when a short-circuit current is passed, a follow-up anti-short-circuit structure is formed between the second magnetic conductive body 60 and the third magnetic conductive body 55, and the holding force of the follow-up anti-short-circuit structure is Provided by the coil 1220 of the relay. Under the premise that the coil 1220 is driven constantly, the double short-circuit-resistant structure of the embodiment of the present disclosure effectively improves the upper limit of the short-circuit-resistant current carrying capacity.
  • the second magnetic conductor 60 and the magnetic portion 420 are staggered, so that the magnetic circuit formed between the magnetic portion 420 and the third magnetic conductor 55, and the magnetic circuit formed between the second magnetic conductor 60 and the third magnetic conductor 55, the two magnetic circuits will not affect each other, so that the magnetic attraction force of the magnetic portion 420 and the magnetic attraction force of the second magnetic conductor 60 will not affect each other, thereby ensuring the anti-short circuit effect.
  • the distance between the third magnetizer 55 and the connecting portion 410 of the first magnetizer 40 is greater than the distance between the third magnetizer 55 and the magnetic portion 420 of the first magnetizer 40. It can be understood that the magnetic flux mainly flows to the magnetic circuit with a smaller magnetic spacing. Therefore, in combination with Figures 6 and 7, it can be seen that when the short-circuit current is passed through the movable spring 54, most of the magnetic flux will flow between the third magnetizer 55 and the magnetic portion 420 and between the third magnetizer 55 and the second magnetizer 60, while there is only a small amount of magnetic flux between the third magnetizer 55 and the connecting portion 410.
  • the second magnetic conductor 60 and the connecting part 410 are arranged correspondingly along the axial direction of the rod part 51 (that is, the direct projections of the second magnetic conductor 60 and the connecting part 410 on the movable spring plate 54 have an overlapping part), most of the magnetic flux will flow to the magnetic conductor part 420 and the second magnetic conductor 60, and very little magnetic flux will flow to the connecting part 410. Therefore, the magnetic attraction between the connecting part 410 and the second magnetic conductor 60 only slightly weakens the magnetic attraction generated between the first magnetic conductor 40 as a whole and the third magnetic conductor 55, and will not affect the short-circuit resistance.
  • the connecting portion 410 of the first magnetic conductor 40 corresponds to the second magnetic conductor 60, while the magnetic portion 420 of the first magnetic conductor 40 is staggered with the second magnetic conductor 60. In this way, the first magnetic conductor 40 will not occupy too much space along the axial direction perpendicular to the rod portion 51, which is beneficial to reducing the volume of the relay.
  • Figure 9 shows a cross-sectional view of B-B in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • Figure 10 shows a cross-sectional view of C-C in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • Figure 11 shows a cross-sectional view of A-A in Figure 3, wherein the ceramic cover, frame sheet and connector are omitted, and the movable spring sheet is just in contact with or just separated from the static contact lead-out terminal.
  • Figures 9 to 11 show the state when the movable spring piece 54 and the static contact lead-out terminal 20 are just in contact or just separated. In this state, it can be considered that the movable contact assembly 53 is in the first position relative to the push rod assembly 50.
  • FIG. 9 to FIG. 11 show the state when the moving spring piece 54 and the static contact lead-out terminal 20 are just separated as an example.
  • the push rod assembly 50 moves downward relative to the static contact lead-out terminal 20 under the action of the relay moving iron core 1240, which is equivalent to the moving contact assembly 53 moving from the second position to the first position relative to the push rod assembly 50, that is, switching from FIG. 7 to FIG. 10.
  • the magnetic spacing between the second magnetizer 60 and the third magnetizer 55 gradually decreases.
  • the second magnetizer 60 contacts the moving contact assembly 53.
  • the second magnetizer 60 and the third magnetizer 55 are in contact.
  • the magnetic distance between the third magnetic conductors 55 is smaller than the magnetic distance between the magnetic conductive portion 420 and the third magnetic conductors 55 .
  • a magnetic flux line is formed between the magnetic conductor portion 420 of the first magnetic conductor 40 and the third magnetic conductor 55.
  • three magnetic flux lines are formed between the second magnetic conductor 60 and the third magnetic conductor 55.
  • the magnetic attraction between the second magnetizer 60 and the third magnetizer 55 is relatively large, while the magnetic attraction between the magnetizer portion 420 and the third magnetizer 55 is relatively small.
  • the magnetic attraction between the second magnetizer 60 and the third magnetizer 55 is a variable internal force, which will not affect the breaking of the moving spring 54. Therefore, the moving spring 54 only needs to overcome the relatively small magnetic attraction between the magnetizer 420 and the third magnetizer 55 to achieve breaking.
  • the second magnetizer 60 and the connecting portion 410 are arranged correspondingly (i.e., the second magnetizer 60 and the connecting portion 410 have overlapping parts relative to the positive projection of the moving spring 54), but since most of the magnetic flux will flow to the magnetizer 420 and the second magnetizer 60, and very little magnetic flux will flow to the connecting portion 410, the connecting portion 410 and the second magnetizer 60 only slightly weaken the magnetic attraction generated between the first magnetizer 40 as a whole and the third magnetizer 55, which is conducive to disconnection.
  • the magnetic flux lines of the connecting portion 410 and the magnetic flux lines of the second magnetizer 60 are in the same direction, so that a repulsive force is generated between the connecting portion 410 and the second magnetizer 60, which is further conducive to disconnection.
  • the first magnet 40 is fixedly arranged relative to the contact container 10, and a fixed anti-short circuit structure is formed between the magnetic portion 420 and the third magnet 55.
  • the second magnet 60 is fixedly connected to the support seat 52 of the push rod assembly 50, and a follow-up anti-short circuit structure is formed between the magnetic portion 420 and the third magnet 55.
  • the magnetic portion 420 of the first magnet 40 and the second magnet 60 are staggered along the axial direction of the rod 51, and the connecting portion 410 of the first magnet 40 corresponds to the second magnet 60 along the axial direction of the rod 51. While meeting the requirements of anti-short circuit and limit disconnection, the first magnet 40 of the embodiment of the present invention will not occupy too much space along the axial direction perpendicular to the rod 51, which is beneficial to reducing the volume of the relay.
  • the second magnetic conductor 60 and the third magnetic conductor 55 may be in direct contact or have a gap therebetween.
  • the moving contact assembly 53 is in the first position relative to the push rod assembly 50, and the second magnetic conductor 60 is in direct contact with the third magnetic conductor 55.
  • a larger portion of the magnetic flux will flow to the magnetic circuit formed by the second magnetic conductor 60 and the third magnetic conductor 55, and a smaller portion of the magnetic flux will flow to the magnetic circuit formed by the magnetic conductor 420 and the third magnetic conductor 55.
  • the magnetic attraction between the magnetic conductor 420 and the third magnetic conductor 55 is smaller, which is more conducive to the disconnection of the moving spring 54 and the static contact lead-out terminal 20.
  • the magnetic conductive portion 420 and the connecting portion 410 are an integral structure, and the magnetic conductive portion 420 extends from the connecting portion 410 toward the movable reed 54 .
  • the first magnetic conductor 40 includes two oppositely disposed magnetic conductors 420 .
  • the two magnetic conductors 420 are respectively connected to two opposite sides of the connecting portion 410 along the length direction D2 of the movable spring 54 , so that the first magnetic conductor 40 forms an inverted U-shape.
  • the first magnetic conductor 40 may also be L-shaped, one side of the L-shape may serve as the connecting portion 410 , and the other side may serve as the magnetic conductor 420 .
  • the relay of the embodiment of the present disclosure further includes a connector 30 , which is passed through the second through hole 103 and includes a first end 31 and a second end 32 , wherein the first end 31 is connected to the contact container 10 , and the second end 32 is connected to the first magnetic conductor 40 .
  • the connecting portion 410 of the first magnetic conductor 40 is connected to the contact container 10 through the connecting piece 30, but is not directly connected to the contact container 10, so that the connection process is unobstructed and visible, which is convenient for operation and ensures the reliability of the connection.
  • first through hole 102 and the second through hole 103 are both formed on the top wall 111 of the ceramic cover 11 , and the first end 31 of the connecting member 30 is connected to the outer wall surface of the top wall 111 .
  • a first metallization layer 113 is provided at the periphery of the first through hole 102, and a second metallization layer 114 is provided at the periphery of the second through hole 103.
  • the static contact lead-out terminal 20 is welded to the top wall 111 through the first metallization layer 113, and the first end 31 of the connector 30 is welded to the top wall 111 through the second metallization layer 114.
  • the outer wall surface of the top wall 111 of the ceramic cover 11 is easier to form a welding plane.
  • a metallization layer also needs to be provided on the periphery of the first through hole 102, so when processing the first metallization layer 113 of the first through hole 102, the second metallization layer 114 of the second through hole 103 is processed at the same time.
  • the metallization layer can be processed only on the outer wall surface of the top wall 111, without processing the metallization layer on the inner wall surface of the top wall 111, which is convenient for processing and simplifies the processing steps.
  • connection portion 410 of the first magnetic conductor 40 is spaced apart from the inner wall surface of the top wall 111.
  • the connection portion 410 of the first magnetic conductor 40 is spaced apart from the inner wall surface of the top wall 111, so that there is a gap between the connection portion 410 and the inner wall surface of the top wall 111. Since the connection portion 410 is not in direct contact with the inner wall surface of the top wall 111, the provision of the first magnetic conductor 40 does not affect the creepage distance of the pair of static contact lead-out terminals 20.
  • the top wall 111 and the side wall 112 are separate structures and are connected by welding.
  • the ceramic cover 11 as a split structure of the top wall 111 and the side wall 112, it is more convenient to connect the connector 30 to the top wall 111.
  • the top wall 111 and the side wall 112 can also be bonded.
  • the sheet structure makes it easier to process the first through hole 102, the second through hole 103, the first metallization layer 113, and the second metallization layer 114 on the top wall 111. Furthermore, the sheet structure also makes it easier to weld the connector 30 and the top wall 111, and the static contact lead-out terminal 20 and the top wall 111.
  • top wall 111 and the side wall 112 may also be an integral structure.
  • the first magnetic conductor 40 is fixedly arranged relative to the contact container 10.
  • the first magnetic conductor 40 can also be fixedly connected to the ceramic cover 11.
  • the relay further comprises a fixing frame, which is disposed in the contact chamber 101 and fixedly connected to the yoke plate 13. The connecting portion 410 of the first magnetic conductor 40 is fixedly connected to the fixing frame.

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Abstract

提供一种继电器，包括接触容器(10)、一对静触点引出端(20)、第一导磁体(40)、推动杆组件(50)、动触点组件(53)。第一导磁体(40)包括连接部(410)和导磁部(420)。推动杆组件(50)包括杆部(51)以及第二导磁体(60)；沿轩部(51)的轴向方向，第二导磁体(60)与导磁部(420)错开，并与连接部(4110)对应；动触点组件(53)相对于支撑座(52)沿着杆部(51)的轴向、在第一位置和第二位置之间可移动，动触点组件(53)包括动簧片(54)和第三导磁体(55)；第三导磁体(55)与连接部(410)之间的距离大于第三导磁体(55)与导磁部(420)之间的距离。

Description

继电器
本公开要求于2022年10月12日提交的申请号为202211248733.8、名称为“继电器”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本公开涉及一种继电器。
背景技术
继电器是一种电子控制器件，它具有控制系统(又称输入回路)和被控制系统(又称输出回路)，通常应用于自动控制电路中。继电器实际上是用较小的电流去控制较大电流的一种“自动开关”。因此在电路中起着自动调节、安全保护、转换电路等作用。
高压直流继电器是继电器中的一种，为了解决高压直流继电器的触头因为短路电流产生的电动斥力而发生的触头弹开问题，相关技术中通常是设置抗短路环电磁结构。根据上轭铁设置的位置进一步区分为随动式结构和固定式结构。具体来说，随动式结构是指上轭铁设置在继电器的可动组件上，固定式结构是指上轭铁设置在除可动组件以外的固定位置。然而，虽然固定式抗短路结构的抗短路能力达到大大加强，但由于短路能力与分断能力呈现负相关性，导致分断能力减弱。而，随动式抗短路结构存在受动铁芯保持力影响，当短路电流较高时铁芯会脱开导致触点断开，而增大动铁芯的保持力，需增大线圈，这与小体积轻量化相矛盾。
发明内容
本公开实施例提供一种继电器，以兼顾抗短路能力和极限分断能力。
根据本公开的一个方面，本公开实施例的继电器，包括接触容器、一对静触点引出端、第一导磁体、推动杆组件、动触点组件和弹性件，接触容器具有接触腔室；一对静触点引出端连接于所述接触容器，且各所述静触点引出端的至少部分位于所述接触腔室内；第一导磁体设于所述接触腔室内；所述第一导磁体包括连接部和与连接部连接的导磁部，所述第一导磁体通过所述连接部，相对于所述接触容器固定设置；推动杆组件包括杆部以及第二导磁体；所述杆部相对于所述接触容器沿所述杆部的轴向可移动，所述第二导磁体设置于所述杆部的一端，沿所述杆部的轴向方向，所述第二导磁体与所述导磁部错开，并与所述连接部对应；动触点组件相对于所述推动杆组件沿着所述杆部的轴向、在靠近所述静触点引出端的第一位置和远离所述静触点引出端的第二位置之间可移动，所述动触点组件包括动簧片和第三导磁体，所述第一导磁体、所述第二导磁体设置于所述动簧片朝向所述静触点引出端的一侧，沿所述杆部的轴向，所述第三导磁体固定 连接于所述动簧片背离所述第一导磁体和所述第二导磁体的一侧；所述第三导磁体与所述第一导磁体用于形成第一导磁回路，所述第三导磁体与所述第二导磁体用于形成第二导磁回路；所述第三导磁体与所述连接部之间的距离大于所述第三导磁体与所述导磁部之间的距离。
根据本公开的一个实施例，弹性件连接所述动触点组件和所述推动杆组件，用于向所述动触点组件施加朝向所述第一位置移动的弹性力。
根据本公开的一个实施例，所述导磁部与所述连接部为一体结构，且所述导磁部自所述连接部朝向所述动簧片延伸。
根据本公开的一个实施例，所述第一导磁体包括两个相对设置的导磁部，两个所述导磁部分别连接于所述连接部沿所述动簧片的长度方向的两个相对的侧边，以使所述第一导磁体形成一倒U型。
根据本公开的一个实施例，在所述动触点组件处于所述第一位置的状态下，所述导磁部与所述第三导磁体之间的磁间距大于所述第二导磁体与所述第三导磁体之间的磁间距。
根据本公开的一个实施例，在所述动触点组件处于所述第一位置时，所述第二导磁体与所述第三导磁体直接接触。
根据本公开的一个实施例，所述推动杆组件还包括支撑座，所述支撑座固定设置在所述杆部沿轴向的一端，且至少部分伸入所述接触腔室，所述第二导磁体固定连接于所述支撑座，所述弹性件设于所述动触点组件和所述支撑座之间。
根据本公开的一个实施例，所述支撑座包括：
底座，连接于所述杆部的一端，所述弹性件设于所述底座和所述动触点组件之间；以及
支架，连接于所述底座；所述第二导磁体连接于所述支架的内壁面，所述动簧片和所述第三导磁体可移动地设置于所述底座和所述支架围成的空间。
根据本公开的一个实施例，所述支架包括：
顶部，所述第二导磁体连接于所述顶部的内壁面；以及
两个侧部，分别连接于所述顶部的两侧，且自所述顶部朝向所述底座延伸；两个所述侧部远离所述顶部的一端分别连接于所述底座，两个所述侧部、所述顶部和所述底座共同形成一供所述动触点组件移动的空间。
根据本公开的一个实施例，所述接触容器还具有一对第一通孔和一第二通孔，所述第一通孔和所述第二通孔均连通于所述接触腔室；一对所述静触点引出端一一对应地穿设于一对所述第一通孔；
所述继电器还包括连接件，所述连接件穿设于所述第二通孔，且包括第一端和第二端，所述第一端与所述接触容器连接，所述第二端与所述连接部连接。
根据本公开的一个实施例，所述接触容器包括：
轭铁板；以及
绝缘罩，包括顶壁和侧壁，所述侧壁的一端环绕连接于所述顶壁的四周，所述侧壁的另一端连接于所述轭铁板；
其中，所述第一通孔和所述第二通孔开设于所述顶壁，所述连接件的第一端与所述顶壁的外壁面连接。
根据本公开的一个实施例，所述绝缘罩包括陶瓷罩和框片，所述陶瓷罩包括所述顶壁和所述侧壁，所述侧壁的另一端通过所述框片连接于所述轭铁板；
所述顶壁的外壁面中，位于所述第一通孔的周缘设有第一金属化层，位于所述第二通孔的周缘设有第二金属化层；
所述静触点引出端通过所述第一金属化层与所述顶壁相焊接，所述连接件的第一端通过所述第二金属化层与所述顶壁相焊接。
根据本公开的一个实施例，所述顶壁和所述侧壁为一体结构；或，所述顶壁和所述侧壁为分体结构，且通过焊接相连。
根据本公开的一个实施例，所述连接部与所述顶壁的内壁面间隔设置。
根据本公开的一个实施例，所述接触容器包括：
轭铁板；以及
绝缘罩，连接于所述轭铁板；
所述继电器还包括固定架，所述固定架设于所述接触腔室内，且固定连接于所述轭铁板，所述连接部固定连接于所述固定架。
上述发明中的一个实施例至少具有如下优点或有益效果：
本公开实施例的继电器，第一导磁体相对于接触容器固定设置，且导磁部与第三导磁体之间形成固定式抗短路结构，推动杆组件的第二导磁体与第三导磁体之间形成随动式抗短路结构，第一导磁体的导磁部与第二导磁体沿着杆部的轴向错开，第一导磁体的连接部与第二导磁体沿着杆部的轴向对应，本公开实施例的继电器在满足抗短路和极限分断的要求下，第一导磁体还不会过多地占用沿垂直于杆部的轴向方向上的空间，有利于缩小继电器的体积。
附图说明
通过参照附图详细描述其示例实施方式，本公开的上述和其它特征及优点将变得更加明显。
图1示出的是本公开继电器的立体示意图。
图2示出的是图1中去除陶瓷罩和框片的示意图。
图3示出的是图1的俯视示意图。
图4示出的是图3中A-A的剖视图。
图5示出的是图1的分解示意图。
图6示出的是图3中B-B的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。
图7示出的是图3中C-C的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。
图8示出的是图3中A-A的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。
图9示出的是图3中B-B的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。
图10示出的是图3中C-C的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。
图11示出的是图3中A-A的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。
图12示出的是本公开实施例的继电器的分解示意图。
其中，附图标记说明如下：
10、接触容器；101、接触腔室；102、第一通孔；103、第二通孔；11a、绝缘罩；11、陶瓷罩；111、顶壁；112、侧壁；113、第一金属化层；114、第二金属化层；12、框片；13、轭铁板；131、第三通孔；20、静触点引出端；30、连接件；31、连接件的第一端；32、连接件的第二端；40、第一导磁体；410、连接部；420、导磁部；50、推动杆组件；51、杆部；52、支撑座；521、底座；522、支架；523、顶部；524、侧部；53、动触点组件；54、动簧片；55、第三导磁体；56、弹性件；60、第二导磁体；1100、外壳；1110、第一壳体；1120、第二壳体；1130、显露孔；1200、电磁铁单元；1210、线圈架；1220、线圈；1240、动铁芯；1250、复位件；1300、灭弧单元；1310、灭弧磁铁；1320、轭铁夹；1400、密封单元；1410、金属罩；D1、运动方向；D2、长度方向。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式。虽然本说明书中使用相对性的用语，例如“上”、“下”来描述图标的一个组件对于另一组件的相对关系，但是这些术语用于本说明书中仅出于方便，例如根据附图中所述的示例的方向。能理解的是，如果将图标的装置翻转使其上下颠倒，则所叙述在“上”的组件将会成为在“下”的组件。其他相对性的用语，例如“顶”、“底”等也作具有类似含义。当某结构在其它结构“上”时，有可能是指 某结构一体形成于其它结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”和“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”、“第二”等仅作为标记使用，不是对其对象的数量限制。
如图12所示，图12示出的是本公开实施例的继电器的分解示意图。继电器包括外壳1100、电磁铁单元1200、灭弧单元1300和密封单元1400。密封单元1400设于外壳1100内，且密封单元1400的静触点引出端20的顶部通过外壳1100的显露孔1130显露于外壳1100的外表面。电磁铁单元1200和灭弧单元1300均设置在外壳1100内。
作为一示例，外壳1100包括第一壳体1110和第二壳体1120，第一壳体1110和第二壳体1120相卡接，以形成用于容纳电磁铁单元1200、灭弧单元1300和密封单元1400的腔室。
灭弧单元1300用于对密封单元1400的静触点引出端20和动簧片54之间产生的电弧进行灭弧。
作为一示例，灭弧单元1300包括两个灭弧磁铁1310。灭弧磁铁1310可以为永久磁铁，且各灭弧磁铁1310可以大致为长方体状。两个灭弧磁铁1310分别设置在密封单元1400的两侧，且沿着动簧片54的长度方向D2相对设置。
通过设置两个相对设置的灭弧磁铁1310，能够在静触点引出端20和动簧片54的周围形成磁场。因此，在静触点引出端20和动簧片54之间产生的电弧，通过磁场的作用，都会被向相互远离的方向拉长，实现灭弧。
灭弧单元1300还包括两个轭铁夹1320，两个轭铁夹1320与两个灭弧磁铁1310的位置对应设置。并且，两个轭铁夹1320环绕着密封单元1400和两个灭弧磁铁1310。通过轭铁夹1320环绕灭弧磁铁1310的设计，可避免灭弧磁铁1310产生的磁场向外扩散，影响灭弧效果。轭铁夹1320由软磁材料制成。软磁材料可以包括但不限于铁，钴，镍，及其合金等。
如图1至图5所示，图1示出的是本公开第一实施例的继电器的立体示意图。图2示出的是图1中去除陶瓷罩11和框片12的示意图。图3示出的是图1的俯视示意图。图4示出的是图3中A-A的剖视图。图5示出的是图1的分解示意图。
本公开实施例的密封单元1400包括接触容器10、一对静触点引出端20、第一导磁体40、推动杆组件50、动触点组件53和弹性件56。
可以理解的是，本公开实施例中的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可 选地还包括对于这些过程、方法、产品或设备固有的其它步骤或组件。
接触容器10内部具有接触腔室101。接触容器10可以包括绝缘罩11a和轭铁板13，绝缘罩11a罩设于轭铁板13的一侧表面，绝缘罩11a和轭铁板13共同合围成接触腔室101。
绝缘罩11a包括陶瓷罩11和框片12。陶瓷罩11通过框片12与轭铁板13连接。框片12可以呈环状结构的金属件，如铁镍合金，且框片12的一端连接于陶瓷罩11的开口边缘，例如通过激光焊、钎焊、电阻焊、胶粘等方式。框片12的另一端连接于轭铁板13，同样也可以通过激光焊、钎焊、电阻焊、胶粘等方式。在陶瓷罩11和轭铁板13之间设置一框片12，可方便陶瓷罩11和轭铁板13的连接。
陶瓷罩11包括顶壁111和侧壁112，侧壁112的一端环绕连接于顶壁111的四周，侧壁112的另一端通过框片12连接于轭铁板13。在本实施例中，侧壁112的另一端通过框片12与轭铁板13连接。
接触容器10还具有一对第一通孔102和一第二通孔103，第一通孔102和第二通孔103均连通于接触腔室101。第一通孔102用于供静触点引出端20穿设其中，第二通孔103用于供一连接件30穿设其中。
作为一示例，第一通孔102和第二通孔103均开设于陶瓷罩11的顶壁111。第二通孔103可以设于两个第一通孔102之间，即连接件30设于一对静触点引出端20之间。
第二通孔103的数量可以为两个，用于供两个连接件30穿设其中，但不以此为限。
一对静触点引出端20连接于接触容器10，每个静触点引出端20的至少部分位于接触腔室101内。一对静触点引出端20的其中一个作为电流流入的端子，另一个作为电流流出的端子。
一对静触点引出端20一一对应地穿设于一对第一通孔102中，且与陶瓷罩11的顶壁111连接，例如通过焊接。
静触点引出端20的底部作为静触点，静触点可以是一体或分体地设置在静触点引出端20的底部。
第一导磁体40设于接触腔室101内，且相对于接触容器10固定设置。第一导磁体40包括连接部410以及与连接部410连接的导磁部420。第一导磁体40通过连接部410相对于接触容器10固定设置，导磁部420用于与第三导磁体55形成导磁回路。
推动杆组件50沿运动方向D1可移动地连接于接触容器10。推动杆组件50包括杆部51、支撑座52以及第二导磁体60。杆部51相对于接触容器10沿杆部51的轴向(即沿运动方向D1)可移动，支撑座52固定设置在杆部51沿轴向的一端，且至少部分伸入接触腔室101，第二导磁体60固定连接于支撑座52。沿杆部51的轴向方向，第二导磁体60与导磁部420错开，并与连接部410对应。
需要说明的是，沿杆部51的轴向方向，第二导磁体60与导磁部420错开可以理解 为：沿杆部51的轴向方向，第二导磁体60相对于动簧片54的正投影与导磁部420相对于动簧片54的正投影不重叠。第二导磁体60与连接部410对应可以理解为：沿杆部51的轴向方向，第二导磁体60相对于动簧片54的正投影与导磁部420相对于动簧片54的正投影至少部分重叠。
作为一示例，第二导磁体60与支撑座52之间可以通过铆接相固定，但不以此为限。
轭铁板13具有第三通孔131，第三通孔131沿着轭铁板13的厚度方向贯穿轭铁板13的两个相对的侧边，且第三通孔131与接触容器10的接触腔室101连通。杆部51沿轴向可移动地穿设于第三通孔131。
当然，在其他实施方式中，推动杆组件50还可以为现有技术中的其他结构，在此不再一一列举。
动触点组件53相对于推动杆组件50沿着杆部51的轴向、在靠近静触点引出端20的第一位置和远离静触点引出端20的第二位置之间可移动。动触点组件53包括动簧片54和第三导磁体55，第一导磁体40和第二导磁体60位于动簧片54朝向静触点引出端20一侧，沿杆部51的轴向，第三导磁体55固定连接于动簧片54背离第一导磁体40和第二导磁体60的一侧。也就是说，沿着动簧片54的厚度方向(即沿运动方向D1)，第一导磁体40和第二导磁体60位于动簧片54的一侧，第三导磁体55位于动簧片54的另一侧。第三导磁体55与连接部410之间的距离大于第三导磁体55与导磁部420之间的距离。
需要说明的是，动触点组件53相对于推动杆组件50沿着杆部51的轴向、在第一位置和第二位置之间可移动中的“第一位置”和“第二位置”是指动触点组件53与推动杆组件50的相对位置。
具体来说，当电磁铁单元1200通电后，能够驱动杆部51、支撑座52和动触点组件53一同向靠近静触点引出端20的方向移动。当动触点组件53与静触点引出端20接触后，动触点组件53被静触点引出端20止挡，而杆部51和支撑座52仍然继续向上运动，直至完成超行程过程。在超行程过程中，动触点组件53与推动杆组件50之间会产生相对移动。
若在超行程过程中，定义动触点组件53为固定不动，则推动杆组件50相对于动触点组件53会向上运动。若在超行程过程中，定义推动杆组件50固定不动，则动触点组件53相对于推动杆组件50是向下运动。
那么，当动触点组件53与静触点引出端20分离或动触点组件53与静触点引出端20刚刚接触时，动触点组件53相对于推动杆组件50位于第一位置，即动触点组件53相对于推动杆组件50靠近静触点引出端20。当在超行程过程时，动触点组件53相对于推动杆组件50向下运动，即动触点组件53相对于推动杆组件50朝着远离静触点引出端20的方向移动，直至动触点组件53相对于推动杆组件50移动至第二位置。当动触点组 件53相对于推动杆组件50移动至第二位置时，完成超行程。此时，弹性件56的压缩量处于最大值。
由此可见，当动触点组件53相对于推动杆组件50位于第一位置时，可以认为动触点组件53与静触点引出端20分离或动触点组件53与静触点引出端20刚刚接触。当动触点组件53相对于推动杆组件50位于第二位置时，此时完成超行程。
作为一示例，第三导磁体55与动簧片54之间可以通过铆接相固定，但不以此为限。
可以理解的是，第一导磁体40、第二导磁体60和第三导磁体55均可以采用铁，钴，镍，及其合金等材料制作而成。
在一实施方式中，第二导磁体60可以为一字型，第一导磁体40和第三导磁体55可以为U型，但不以此为限。
可以理解的是，第一导磁体40、第二导磁体60和第三导磁体55根据需要均可以设计为包括多片叠置的导磁片。
动簧片54的两端用于与一对静触点引出端20的底部接触，实现触点闭合。动簧片54沿其长度方向D2的两端可以作为动触点。动簧片54两端的动触点可以凸出于动簧片54的其他部分，也可以是与其他部分齐平。
可以理解的是，动触点可以是一体或分体地设置在动簧片54沿其长度方向D2的两端。
弹性件56设于动触点组件53和支撑座52之间，用于向动触点组件53施加朝向第一位置移动的弹性力。
作为一示例，弹性件56可以为弹簧，但不以此为限。
在一实施方式中，弹性件56的一端抵接于支撑座52，另一端抵接于动触点组件53的第三导磁体55。
当然，在其他实施方式中，也可以在第三导磁体55上开设通孔，弹性件56穿过该通孔抵接于动簧片54。
支撑座52包括底座521和支架522。底座521连接于杆部51沿轴向的一端，支架522连接于底座521。第二导磁体60连接于支架522的内壁面，动簧片54和第三导磁体55可移动地设置于底座521和支架522之间，弹性件56的一端抵接于底座521，另一端抵接于第三导磁体55。
在一实施方式中，支架522可以呈倒U型，且与底座521卡接。底座521和支架522合围成一腔室，该腔室用于容纳动触点组件53和弹性件56。
支架522可以包括顶部523和两个侧部524，两个侧部524分别连接于顶部523的两侧，且自顶部523朝向底座521延伸，以使支架522形成一倒U型。两个侧部524远离顶部523的一端分别连接于底座521。两个侧部524之间形成一可供动簧片54和第三导磁体55穿设且移动的空间。
第二导磁体60连接于顶部523的内壁面。在动簧片54未与静触点引出端20接触或动簧片54刚刚与静触点引出端20接触的状态下，在弹性件56的弹性力的作用下，动簧片54与第二导磁体60抵接。在超行程过程中，静触点引出端20止挡动触点组件53(动簧片54和第三导磁体55)，且使动触点组件53保持不动，而杆部51带动支撑座52连同第二导磁体60继续向上移动，此时动触点组件53和底座521共同挤压弹性件56。
可以理解的是，在其他实施方式中，第二导磁体60也可以不是与支撑座52的支架522固定连接，而是与杆部51的一端固定连接。具体来说，动触点组件53可以设有通孔，杆部51穿设于动触点组件53的通孔，第二导磁体60设置于杆部51的一端。
密封单元1400还包括金属罩1410，金属罩1410连接于轭铁板13背向绝缘罩11a的一侧，且金属罩1410罩设于轭铁板13上的第三通孔131。金属罩1410与轭铁板13围成一用于容纳电磁铁单元1200的静铁芯和动铁芯1240的腔室，下文将详细说明。
如图4和图22所示，电磁铁单元1200包括线圈架1210、线圈1220、静铁芯(图中未示出)、动铁芯1240和复位件1250。线圈架1210呈中空筒状，且采用绝缘材料形成。金属罩1410穿设在线圈架1210内。线圈1220环绕线圈架1210。静铁芯固定设置在金属罩1410内，且部分静铁芯伸入第三通孔131。静铁芯具有穿孔，穿孔与第三通孔131的位置对应设置，用于供杆部51穿设其中。动铁芯1240可移动地设置在金属罩1410内，且与静铁芯相对设置，动铁芯1240连接杆部51，当线圈1220通电时，动铁芯1240被静铁芯吸引。动铁芯1240与杆部51可以采用螺接、铆接、焊接或其他方式连接。
复位件1250位于金属罩1410内部，且复位件1250设置在静铁芯和动铁芯1240之间，用于当线圈1220断电时，使动铁芯1240复位。复位件1250可以为弹簧，并套设于杆部51的外部。
如图6至图8所示，图6示出的是图3中B-B的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。图7示出的是图3中C-C的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。图8示出的是图3中A-A的剖视图，其中省略了陶瓷罩、框片和连接件，且已完成超行程。
需要说明的是，图6至图8中示出的是已完成超行程时的状态。在该状态下，可被认为动触点组件53相对于推动杆组件50处于第二位置。
如图6和图7所示，第一导磁体40与第三导磁体55之间形成第一导磁回路，故在第一导磁体40与第三导磁体55之间产生磁吸力。第二导磁体60与第三导磁体55之间形成第二导磁回路，故在第二导磁体60与第三导磁体55之间产生磁吸力。由于第一导磁体40相对于接触容器10是固定设置，因此在通短路电流时，第一导磁体40与第三导磁体55之间形成固定式抗短路结构，固定式抗短路结构的保持力是由接触容器10提供。由于第二导磁体60固定连接于推动杆组件50的支撑座52，因此在通短路电流时，第二导磁体60与第三导磁体55之间形成随动式抗短路结构，随动式抗短路结构的保持力是 由继电器的线圈1220提供。在线圈1220驱动恒定的前提下，本公开实施例的双重抗短路结构有效提升了抗短路载流能力的上限。
需要说明的是，如图8所示，沿杆部51的轴向方向，第二导磁体60与导磁部420错开，使得导磁部420与第三导磁体55之间形成的导磁回路，第二导磁体60与第三导磁体55之间形成的导磁回路，两个导磁回路不会互相影响，这样导磁部420的磁吸力与第二导磁体60的磁吸力不会相互影响，确保了抗短路效果。
另外，第三导磁体55与第一导磁体40的连接部410之间的距离大于第三导磁体55与第一导磁体40的导磁部420之间的距离。可以理解的是，磁通主要流向磁间距较小的磁回路。因此，结合图6和图7可以看出，在动簧片54通短路电流时，绝大部分的磁通会流向第三导磁体55与导磁部420之间以及第三导磁体55与第二导磁体60之间，而在第三导磁体55与连接部410之间仅存在少量磁通。因此，虽然沿杆部51的轴向方向，第二导磁体60与连接部410对应设置(即第二导磁体60与连接部410在动簧片54上的正投影具有重叠的部分)，但是由于绝大部分的磁通会流向导磁部420和第二导磁体60，而极少的磁通会流向连接部410，故连接部410与第二导磁体60之间的磁吸力仅是轻微削弱第一导磁体40整体与第三导磁体55之间产生磁吸力，不会影响抗短路能力。
值得一提的是，沿杆部51的轴向方向，第一导磁体40的连接部410与第二导磁体60对应，而第一导磁体40的导磁部420与第二导磁体60错开，这样第一导磁体40不会过多地占用沿垂直于杆部51的轴向方向上的空间，有利于缩小继电器的体积。
如图9至图11所示，图9示出的是图3中B-B的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。图10示出的是图3中C-C的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。图11示出的是图3中A-A的剖视图，其中省略了陶瓷罩、框片和连接件，且动簧片与静触点引出端刚接触或刚分离。
需要说明的是，图9至图11中示出的是动簧片54与静触点引出端20刚刚接触或刚刚分离时的状态。在该状态下，可被认为动触点组件53相对于推动杆组件50处于第一位置。
为了方便说明本公开的继电器在提升抗短路能力的基础上，还能够满足过载电流分断的要求的效果，以图9至图11示出的是动簧片54与静触点引出端20刚刚分离时的状态为例。
当继电器的线圈1220断电后，在继电器的动铁芯1240的作用下，推动杆组件50相对于静触点引出端20向下运动，那么相当于动触点组件53相对于推动杆组件50由第二位置向第一位置移动，即由图7切换至图10。在动触点组件53由第二位置向第一位置的移动过程中，第二导磁体60与第三导磁体55之间的磁间距逐渐变小。当动触点组件53移动至第一位置时，第二导磁体60与动触点组件53接触，此时第二导磁体60与 第三导磁体55之间的磁间距小于导磁部420与第三导磁体55之间的磁间距。
可以理解的是，大部分的磁通会流向磁间距较小的磁回路，即大部分的磁通会流向第二导磁体60与第三导磁体55形成的磁回路。举例来说，如图10所示，第一导磁体40的导磁部420与第三导磁体55之间形成一条磁感线。如图9所示，第二导磁体60与第三导磁体55之间形成三条磁感线。
此时，第二导磁体60与第三导磁体55之间的磁吸力较大，而导磁部420与第三导磁体55之间的磁吸力较小。又由于第二导磁体60与动触点组件53接触，使得第二导磁体60与第三导磁体55之间的磁吸力为变内力，不会对动簧片54的分断产生影响。因此，动簧片54只需克服导磁体420与第三导磁体55之间的较小磁吸力，即可实现分断。并且，沿杆部51的轴向方向，第二导磁体60与连接部410对应设置(即第二导磁体60与连接部410相对于动簧片54的正投影具有重叠的部分)，但是由于绝大部分的磁通会流向导磁部420和第二导磁体60，而极少的磁通会流向连接部410，故连接部410与第二导磁体60仅轻微削弱第一导磁体40整体与第三导磁体55之间产生的磁吸力，有利于分断。另外，连接部410的磁感线与第二导磁体60的磁感线同向，使得连接部410与第二导磁体60之间产生相斥的作用力，进一步利于分断。
由此可见，第一导磁体40相对于接触容器10固定设置，且导磁部420与第三导磁体55之间形成固定式抗短路结构，第二导磁体60固定连接于推动杆组件50的支撑座52，与第三导磁体55之间形成随动式抗短路结构，第一导磁体40的导磁部420与第二导磁体60沿着杆部51的轴向错开，第一导磁体40的连接部410与第二导磁体60沿着杆部51的轴向对应，本公开实施例的继电器在满足抗短路和极限分断的要求下，第一导磁体40还不会过多地占用沿垂直于杆部51的轴向方向上的空间，有利于缩小继电器的体积。
可以理解的是，当动触点组件53相对于推动杆组件50处于第一位置时，第二导磁体60与第三导磁体55之间可以是直接接触，也可以是具有一间隙。
在本实施例中，动触点组件53相对于推动杆组件50处于第一位置，第二导磁体60与第三导磁体55直接接触。这样，较大部分的磁通会流向第二导磁体60与第三导磁体55形成的磁回路，较小部分的磁通会流向导磁部420与第三导磁体55形成的磁回路。导磁部420与第三导磁体55之间的磁吸力较小，更有利于动簧片54与静触点引出端20分断。
如图4和图5所示，导磁部420与连接部410为一体结构，且导磁部420自连接部410朝向动簧片54延伸。
在本实施例中，第一导磁体40包括两个相对设置的导磁部420，两个导磁部420分别连接于连接部410沿动簧片54的长度方向D2的两个相对的侧边，以使第一导磁体40形成一倒U型。
当然，在其他实施方式中，第一导磁体40也可以为L型，L型的其中一条边可以作为连接部410，另一条边可以作为导磁部420。
如图4和图5所示，本公开实施例的继电器还包括连接件30，连接件30穿设于第二通孔103，且包括第一端31和第二端32，第一端31与接触容器10连接，第二端32与第一导磁体40连接。
本公开实施例的继电器，第一导磁体40的连接部410通过连接件30连接接触容器10，而并不直接与接触容器10连接，使得连接过程无遮挡、可视化，既方便操作，又确保连接的可靠性。
进一步地，第一通孔102和第二通孔103均开设于陶瓷罩11的顶壁111上，且连接件30的第一端31与顶壁111的外壁面连接。
顶壁111的外壁面中，位于第一通孔102的周缘设有第一金属化层113，位于第二通孔103的周缘设有第二金属化层114。静触点引出端20通过第一金属化层113与顶壁111相焊接，连接件30的第一端31通过第二金属化层114与顶壁111相焊接。
相较于陶瓷罩11的内壁面，陶瓷罩11的顶壁111的外壁面更容易形成焊接平面。并且，由于陶瓷罩11的顶壁111需要设置静触点引出端20，而静触点引出端20与顶壁111焊接时，也需要在第一通孔102的周缘设置金属化层，故在加工第一通孔102的第一金属化层113时，一并将第二通孔103的第二金属化层114加工。因此，通过将连接件30焊接在陶瓷罩11的顶壁111的外壁面，可仅在顶壁111的外壁面加工金属化层，而无需在顶壁111的内壁面加工金属化层，既方便加工，又简化了加工步骤。
第一导磁体40的连接部410与顶壁111的内壁面间隔设置。通过第一导磁体40的连接部410与顶壁111的内壁面间隔设置，使得连接部410与顶壁111的内壁面之间具有一间隙。由于连接部410并不与顶壁111的内壁面直接接触，故第一导磁体40的设置并不影响一对静触点引出端20的爬电距离。
顶壁111和侧壁112为分体结构，且通过焊接相连。
可以理解的是，通过将陶瓷罩11设计为顶壁111和侧壁112的分体结构，更方便连接件30与顶壁111的连接。当然，顶壁111和侧壁112之间还可以通过粘接。
具体来说，由于顶壁111为片状，片状结构更容易在顶壁111上加工第一通孔102、第二通孔103、第一金属化层113和第二金属化层114。进一步地，片状结构也更容易实现连接件30和顶壁111以及静触点引出端20和顶壁111的焊接。
当然，顶壁111和侧壁112也可以为一体结构。
连接件30的第二端32与第一导磁体40的连接方式可以有多种实施方式，例如焊接、铆接、胶接等。
当然，在其他实施方式中，第一导磁体40相对于接触容器10固定设置的方式，除了上述第一导磁体40通过连接件30固定连接于陶瓷罩11上，第一导磁体40还可以固 定连接于一固定架上。具体来说，继电器还包括固定架，固定架设于接触腔室101内，且固定连接于轭铁板13。第一导磁体40的连接部410固定连接于该固定架。
应可理解的是，本公开不将其应用限制到本说明书提出的部件的详细结构和布置方式。本公开能够具有其他实施方式，并且能够以多种方式实现并且执行。前述变形形式和修改形式落在本公开的范围内。应可理解的是，本说明书公开和限定的本公开延伸到文中和/或附图中提到或明显的两个或两个以上单独特征的所有可替代组合。所有这些不同的组合构成本公开的多个可替代方面。本说明书所述的实施方式说明了已知用于实现本公开的最佳方式，并且将使本领域技术人员能够利用本公开。

Claims (15)

  1. 一种继电器，其特征在于，包括：
    接触容器，具有接触腔室；
    一对静触点引出端，连接于所述接触容器，且各所述静触点引出端的至少部分位于所述接触腔室内；
    第一导磁体，设于所述接触腔室内；所述第一导磁体包括连接部和与连接部连接的导磁部，所述第一导磁体通过所述连接部，相对于所述接触容器固定设置；
    推动杆组件，包括杆部以及第二导磁体；所述杆部相对于所述接触容器沿所述杆部的轴向可移动，所述第二导磁体设置于所述杆部的一端，沿所述杆部的轴向方向，所述第二导磁体与所述导磁部错开，并与所述连接部对应；
    动触点组件，相对于所述推动杆组件沿着所述杆部的轴向、在靠近所述静触点引出端的第一位置和远离所述静触点引出端的第二位置之间可移动，所述动触点组件包括动簧片和第三导磁体，所述第一导磁体、所述第二导磁体设置于所述动簧片朝向所述静触点引出端的一侧，沿所述杆部的轴向，所述第三导磁体固定连接于所述动簧片背离所述第一导磁体和所述第二导磁体的一侧；所述第三导磁体与所述第一导磁体用于形成第一导磁回路，所述第三导磁体与所述第二导磁体用于形成第二导磁回路；所述第三导磁体与所述连接部之间的距离大于所述第三导磁体与所述导磁部之间的距离。
  2. 根据权利要求1所述的继电器，其特征在于，还包括弹性件，所述弹性件连接所述动触点组件和所述推动杆组件，用于向所述动触点组件施加朝向所述第一位置移动的弹性力。
  3. 根据权利要求1所述的继电器，其特征在于，所述导磁部与所述连接部为一体结构，且所述导磁部自所述连接部朝向所述动簧片延伸。
  4. 根据权利要求3所述的继电器，其特征在于，所述第一导磁体包括两个相对设置的导磁部，两个所述导磁部分别连接于所述连接部沿所述动簧片的长度方向的两个相对的侧边，以使所述第一导磁体形成一倒U型。
  5. 根据权利要求1所述的继电器，其特征在于，在所述动触点组件处于所述第一位置的状态下，所述导磁部与所述第三导磁体之间的磁间距大于所述第二导磁体与所述第三导磁体之间的磁间距。
  6. 根据权利要求5所述的继电器，其特征在于，在所述动触点组件处于所述第一位置时，所述第二导磁体与所述第三导磁体直接接触。
  7. 根据权利要求2所述的继电器，其特征在于，所述推动杆组件还包括支撑座，所述支撑座固定设置在所述杆部沿轴向的一端，且至少部分伸入所述接触腔室，所述第二导磁体固定连接于所述支撑座，所述弹性件设于所述动触点组件和所述支撑座之间。
  8. 根据权利要求7所述的继电器，其特征在于，所述支撑座包括：
    底座，连接于所述杆部的一端，所述弹性件设于所述底座和所述动触点组件之间；以及
    支架，连接于所述底座；所述第二导磁体连接于所述支架的内壁面，所述动簧片和所述第三导磁体可移动地设置于所述底座和所述支架围成的空间。
  9. 根据权利要求8所述的继电器，其特征在于，所述支架包括：
    顶部，所述第二导磁体连接于所述顶部的内壁面；以及
    两个侧部，分别连接于所述顶部的两侧，且自所述顶部朝向所述底座延伸；两个所述侧部远离所述顶部的一端分别连接于所述底座，两个所述侧部、所述顶部和所述底座共同形成一供所述动触点组件移动的空间。
  10. 根据权利要求1至9任一项所述的继电器，其特征在于，所述接触容器还具有一对第一通孔和一第二通孔，所述第一通孔和所述第二通孔均连通于所述接触腔室；一对所述静触点引出端一一对应地穿设于一对所述第一通孔；
    所述继电器还包括连接件，所述连接件穿设于所述第二通孔，且包括第一端和第二端，所述第一端与所述接触容器连接，所述第二端与所述连接部连接。
  11. 根据权利要求10所述的继电器，其特征在于，所述接触容器包括：
    轭铁板；以及
    绝缘罩，包括顶壁和侧壁，所述侧壁的一端环绕连接于所述顶壁的四周，所述侧壁的另一端连接于所述轭铁板；
    其中，所述第一通孔和所述第二通孔开设于所述顶壁，所述连接件的第一端与所述顶壁的外壁面连接。
  12. 根据权利要求11所述的继电器，其特征在于，所述绝缘罩包括陶瓷罩和框片，所述陶瓷罩包括所述顶壁和所述侧壁，所述侧壁的另一端通过所述框片连接于所述轭铁板；
    所述顶壁的外壁面中，位于所述第一通孔的周缘设有第一金属化层，位于所述第二通孔的周缘设有第二金属化层；
    所述静触点引出端通过所述第一金属化层与所述顶壁相焊接，所述连接件的第一端通过所述第二金属化层与所述顶壁相焊接。
  13. 根据权利要求11所述的继电器，其特征在于，所述顶壁和所述侧壁为一体结构；或，所述顶壁和所述侧壁为分体结构，且通过焊接相连。
  14. 根据权利要求11所述的继电器，其特征在于，所述连接部与所述顶壁的内壁面间隔设置。
  15. 根据权利要求1所述的继电器，其特征在于，所述接触容器包括：
    轭铁板；以及
    绝缘罩，连接于所述轭铁板；
    所述继电器还包括固定架，所述固定架设于所述接触腔室内，且固定连接于所述轭铁 板，所述连接部固定连接于所述固定架。
PCT/CN2023/124058 2022-10-12 2023-10-11 继电器 Ceased WO2024078542A1 (zh)

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