WO2021104065A1 - 断路器 - Google Patents

断路器 Download PDF

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Publication number
WO2021104065A1
WO2021104065A1 PCT/CN2020/128888 CN2020128888W WO2021104065A1 WO 2021104065 A1 WO2021104065 A1 WO 2021104065A1 CN 2020128888 W CN2020128888 W CN 2020128888W WO 2021104065 A1 WO2021104065 A1 WO 2021104065A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
circuit breaker
test
piece
leakage
Prior art date
Application number
PCT/CN2020/128888
Other languages
English (en)
French (fr)
Inventor
涂兵
朱俊
李罗斌
Original Assignee
浙江正泰电器股份有限公司
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 浙江正泰电器股份有限公司 filed Critical 浙江正泰电器股份有限公司
Priority to AU2020390079A priority Critical patent/AU2020390079B2/en
Priority to EP20894307.6A priority patent/EP4068328A4/en
Publication of WO2021104065A1 publication Critical patent/WO2021104065A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together

Definitions

  • the invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker.
  • the circuit breaker is not closed, that is, when the circuit breaker is in the open state, if the test button is pressed to close the contacts of the leakage test circuit, voltage will be generated at the outlet end of the circuit breaker, leaving a serious safety hazard.
  • the volume of the circuit breaker is usually small and the internal structure is also relatively compact. If the number of contacts of the leakage test circuit is increased, the volume of the circuit breaker is likely to increase and the performance of the circuit breaker is reduced.
  • the purpose of the invention is to overcome the defects of the prior art and provide a circuit breaker with a simple structure and high contact reliability of the contact mechanism.
  • a circuit breaker includes a housing assembly, and a contact system, a leakage protection mechanism and a leakage test mechanism arranged in the housing assembly.
  • the contact system includes a handle, a contact mechanism and an operating mechanism.
  • the circuit breaker drives the operating mechanism to close through the handle Or disconnect the contact mechanism.
  • the leakage test mechanism includes a leakage test button and a leakage test circuit.
  • the leakage test circuit includes a first test contact coordinated with the leakage test button and a second test contact coordinated with the contact system.
  • the system drives the second test contact to open when the circuit breaker is opened; the contact system avoids the second test contact when the circuit breaker is closed, so that the second test contact is reset and kept closed.
  • the test button is used to drive the first test contact. The point is closed, and the leakage test circuit is turned on when the first test contact and the second test contact are both closed.
  • the leakage test circuit includes an intermediate connection piece, and a first elastic piece and a second elastic piece respectively matched with two ends of the intermediate connection piece.
  • the first elastic piece and one end of the intermediate connection piece are spaced apart to form a leakage test circuit.
  • the first test contact, pressing the leakage test button can drive the first elastic piece to contact with the intermediate connecting piece to close the first test contact; the second elastic piece contacts and cooperates with the other end of the intermediate connecting piece to form the second part of the leakage test loop Test contacts, the contact system does not make contact with the second test contact when the circuit breaker is closed to keep the second test contact closed, and the contact system drives the second elastic member to separate the intermediate connecting member when the circuit breaker is opened.
  • the test contact is open.
  • the contact mechanism includes a static contact and a moving contact that are respectively connected to the line; the operating mechanism can drive the static contact and the moving contact to contact and separate; the moving contact includes pivotally mounted in the housing assembly and The contact support matched with the operating mechanism, and the movable contact plate arranged on the contact support.
  • the movable contact plate is provided with a movable contact that cooperates with the static contact; the second test contact is in contact with the movable contact
  • the contacts contact and move away from the second elastic element to reset the second elastic element.
  • each of the plurality of circuit breaker units includes a contact system
  • at least one circuit breaker unit includes a leakage protection mechanism
  • the first elastic member and the second elastic member of the leakage test mechanism are respectively arranged at In two different circuit breaker units, and the first elastic member and the second elastic member are respectively connected with the contact system of the two circuit breaker units, the middle part of the middle connecting piece of the leakage test mechanism passes through the housing assembly, and the leakage test mechanism
  • the two ends of the middle connecting piece extend into the circuit breaker unit corresponding to the first elastic piece and the second elastic piece respectively.
  • the contact system includes a handle, a contact mechanism, an operating mechanism, a wiring mechanism, a short-circuit protection mechanism, and an overload protection mechanism.
  • the wiring mechanism includes a left wiring terminal and a right wiring terminal respectively arranged at both ends of the circuit breaker unit, and a left wiring terminal It is connected to the static contact through the short-circuit protection mechanism, and the right terminal is connected to the moving contact plate of the moving contact through the overload protection mechanism; the second wire connected between the left terminal of each circuit breaker unit and the short-circuit protection mechanism passes through Zero-sequence current transformer; the end of the second elastic member that does not fit with the intermediate connecting member is connected to the second wire of the circuit breaker unit provided with the second elastic member; the first elastic member has been tested with a resistance The right connection terminal of the circuit breaker unit of an elastic piece is connected.
  • the second elastic member includes a second spiral portion pivotally mounted on the housing assembly, and a second contact arm and a second connecting arm respectively provided at both ends of the second spiral portion.
  • the contact supports of the two spiral parts and the moving contact are arranged on both sides of the intermediate connecting piece.
  • the middle part of the second contact arm passes through the lower part of the intermediate connecting piece and then cooperates with the contact support.
  • the contact supports drive the moving contact and the static When the contacts are separated, push the second contact arm to separate from the intermediate connector to disconnect the second test contact.
  • the contact support drives the moving contact to contact with the static contact, the second contact arm resets and contacts the intermediate connector to make the second contact arm reset. 2.
  • the test contact is closed.
  • the second contact arm has a U-shaped structure
  • the contact support is provided with a contact boss
  • one end of the intermediate connector is located inside the second contact arm
  • one end of the second contact arm is connected to the second spiral part
  • the other end of the second contact part is provided with a second pushing arm that is matched with the contact boss.
  • a conductive sheet is provided in the housing assembly, the second elastic member is clamped on the conductive sheet, one end of the conductive sheet is provided with a clamping slot for limiting and cooperating with the second connecting arm, and the other end of the conductive sheet is provided for The lower extension piece of the wiring.
  • the contact system further includes a short-circuit protection mechanism
  • the second spiral portion is arranged above the side of the intermediate connecting piece away from the contact support
  • the conductive piece is arranged on one side of the handle and above the short-circuit protection mechanism
  • the conductive sheet includes a longitudinal sheet and a transverse sheet connected at one end, and an oblique sheet connected to the other end of the transverse sheet.
  • the longitudinal sheet is arranged on the horizontal side of the second spiral part, and the longitudinal sheet is provided on the side of the longitudinal sheet.
  • one end of the horizontal piece is connected with the bottom end of the vertical piece, the other end of the horizontal piece is connected with the top end of the inclined piece, and the bottom end of the inclined piece extends to the short-circuit protection mechanism.
  • a lower extension piece is provided on the inclined piece.
  • the leakage protection unit and the circuit breaker protection unit are arranged side by side, the leakage test mechanism is arranged between the leakage protection unit and the circuit breaker protection unit, the leakage protection unit and the circuit breaker protection unit respectively include a contact system, and the leakage protection unit and The contact system of the circuit breaker protection unit passes through the zero-sequence current transformer of the leakage test mechanism, the leakage protection mechanism, the first elastic part of the leakage test mechanism and the leakage test button of the leakage test mechanism are arranged in the leakage protection unit, and the leakage test mechanism
  • the second elastic member is arranged in the circuit breaker protection unit to cooperate with the operating mechanism of the circuit breaker protection unit, and the shell assembly is correspondingly provided with an intermediate partition between the leakage protection unit and the circuit breaker protection unit, and the intermediate connection piece of the leakage test mechanism Passing through the intermediate partition, one end of the intermediate connecting piece extends into the leakage protection unit to cooperate with the first elastic piece, and the other end of the intermediate connecting piece extends into the circuit breaker
  • the contact system of the leakage protection unit and the contact system of the circuit breaker protection unit have the same structure, and the contact systems of the leakage protection unit and the circuit breaker protection unit respectively include a handle, a contact mechanism, an operating mechanism, a wiring mechanism, and short circuit protection.
  • Mechanism and overload protection mechanism the contact mechanism includes a static contact and a movable contact arranged oppositely, and the movable contact includes a contact support pivotally mounted in the housing assembly to cooperate with the operating mechanism, and a movable contact support on the contact support
  • the contact board, on the movable contact board is provided with a movable contact that matches the static contact.
  • the wiring mechanism includes a left wiring terminal and a right wiring terminal respectively arranged at both ends of the circuit breaker unit.
  • the left wiring terminal passes through the short-circuit protection mechanism and the static contact.
  • the right terminal is connected to the moving contact plate of the moving contact through the overload protection mechanism;
  • the second wire connected between the left terminal of the circuit breaker protection unit and the short-circuit protection mechanism passes through the zero-sequence current transformer, the leakage current
  • the second elastic part of the test circuit is connected to the second wire connected between the left connection terminal of the circuit breaker protection unit and the short-circuit protection mechanism, and the first elastic part of the leakage test circuit is connected to the right connection terminal of the leakage protection unit through the test resistance .
  • the housing assembly is correspondingly provided with an intermediate partition between the circuit breaker protection unit and the leakage protection unit, and the intermediate partition is provided with a raised structure on the side close to the leakage protection unit, and the raised mechanism is close to the circuit breaker.
  • One side of the circuit breaker protection unit forms a space for accommodating the short-circuit protection mechanism of the contact system in the circuit breaker protection unit; one end of the intermediate connecting piece that cooperates with the second elastic piece is arranged above the short-circuit protection mechanism in the circuit breaker protection unit, and the intermediate connection
  • One end of the element matching with the first elastic element extends through the intermediate partition to the top side of the protruding structure to fit.
  • the intermediate connecting piece has a zigzag structure
  • the intermediate connecting piece includes a connecting plate and a first contact plate and a second contact plate respectively connected to both ends of the connecting plate.
  • the connecting plate and the second contact plate are arranged on the intermediate partition.
  • the intermediate partition plate is provided with an escape hole for avoiding the first contact plate
  • the intermediate partition plate is provided with a limit slot for fixing the intermediate connector
  • the side of the connecting plate is provided with a direction
  • the first elastic member includes a first spiral part pivotally mounted on the housing assembly, and a first contact arm and a first connecting arm respectively provided at both ends of the first spiral part, and the first contact arm extends to Between the middle connecting piece and the leakage test button, the first connecting arm is connected to the right connection terminal of the leakage protection unit through a test resistor.
  • the first spiral part is arranged below the leakage test button
  • the first contact arm has a Z-shaped structure
  • the first contact arm includes a lower transverse arm and an upper transverse arm, and one end connected to the lower transverse arm and the upper transverse arm.
  • One end of the lower transverse arm is connected with the first spiral part
  • the end of the lower transverse arm connected with the longitudinal arm is inclined upward and then matched with the bottom of the leakage test button
  • the longitudinal arm extends to the upper part of the middle connecting piece and then connects with the upper transverse
  • One end of the arm is connected
  • the other end of the upper cross arm extends in the direction close to the middle connecting piece and then connects to the bending arm.
  • the bending arm is located above one end of the middle connecting piece and the bending arm is bent to the side away from the middle connecting piece.
  • Leakage test button The lower cross arm can be pushed to drive the outer curved surface of the curved arm to contact one end of the middle connecting piece.
  • the leakage test circuit has two contacts: a first test contact and a second test contact.
  • the second test contact remains closed when the circuit breaker is closed, and the contact system is driven when the circuit breaker is opened.
  • the second test contact is disconnected, which not only can effectively avoid the danger caused by pressing the leakage test button when the circuit breaker is opened, but also does not contact the contact system when the circuit breaker is closed, and will not affect the contact mechanism
  • the contact parameters ensure the contact pressure of the contact mechanism when closing.
  • the two ends of the intermediate connecting piece are respectively matched with the first elastic piece and the second elastic piece, which not only can effectively use the limited space in the circuit breaker and avoid increasing the volume of the circuit breaker, but also the second elastic piece interacts with the intermediate piece through its own elasticity.
  • the connecting piece maintains contact to form a normally closed contact structure, which has the characteristics of simple structure and low cost.
  • Figure 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the invention.
  • Figure 2 is a schematic structural diagram of a circuit breaker unit according to an embodiment of the invention.
  • Figure 3 is a cross-sectional view of a circuit breaker according to an embodiment of the invention.
  • FIG. 4 is a schematic diagram of the structure of a leakage test circuit according to an embodiment of the present invention.
  • Fig. 5 is a top view of a leakage test circuit according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of the circuit breaker protection unit far away from the leakage protection unit according to the inventive embodiment of the present invention.
  • Fig. 7 is a schematic structural diagram of a side of the circuit breaker protection unit close to the leakage protection unit according to an embodiment of the present invention.
  • Fig. 8 is a partial enlarged view of Fig. 6 of the inventive embodiment of the present invention.
  • Fig. 9 is a structural schematic diagram of the leakage protection unit far away from the circuit breaker protection unit of the inventive embodiment of the present invention.
  • Fig. 10 is a schematic structural diagram of a leakage protection unit close to the circuit breaker protection unit in an embodiment of the present invention.
  • circuit breaker created by the present invention will be further described below with reference to the embodiments given in FIGS. 1 to 10.
  • the circuit breaker created by the present invention is not limited to the description of the following embodiments.
  • the circuit breaker of the present invention includes a housing assembly, and a contact system, a leakage protection mechanism, and a leakage test mechanism arranged in the housing assembly.
  • the contact system includes a handle 21, a contact mechanism, Operating mechanism 23, wiring mechanism, contact mechanism includes static contact 221 and moving contact 222 respectively connected to the line, the handle 21 drives the operating mechanism 23 to close or open the contact mechanism when the circuit breaker is closed and opened.
  • the leakage protection mechanism includes a zero-sequence current transformer 41.
  • the leakage protection mechanism triggers the operating mechanism 23 to trip, and the operating mechanism 23 loses balance and drives the static contact 221 and the moving contact.
  • the head 222 is separated to disconnect the line.
  • the leakage test mechanism includes a leakage test button 50 and a leakage test circuit that cooperates with the zero sequence current transformer 41 of the leakage protection mechanism.
  • the leakage test circuit includes a first test that cooperates with the leakage test button 50.
  • the second test contact T2 is normally kept closed (it can be understood as a normally closed contact), the contact system opens the second test when the circuit breaker is opened Contact T2; the contact system avoids the second test contact T2 when the circuit breaker is closed, resets the second test contact T2 and keeps it closed, the test button 50 is used to drive the first test contact T1 to close, when the first test
  • the leakage test circuit is turned on and a leakage fault signal is generated. At this time, if the circuit breaker can trip and disconnect the line, the leakage protection of the circuit breaker can be effective, otherwise the circuit breaker The leakage protection function is invalid.
  • the leakage test circuit has two contacts: a first test contact T1 and a second test contact T2.
  • the second test contact T2 remains closed when the circuit breaker is closed, and when the circuit breaker is opened
  • the contact system drives the second test contact T2 to open, which not only can effectively avoid the danger caused by pressing the leakage test button 50 when the circuit breaker is opened, but also the second test contact T2 does not contact the contact system when the circuit breaker is closed. Will not affect the contact parameters of the contact mechanism, and ensure the contact pressure of the contact mechanism when closing.
  • the leakage test circuit created by the present invention includes an intermediate connecting piece 53, and a first elastic piece 51 and a second elastic piece 52 respectively matched with the two ends of the intermediate connecting piece.
  • One end of the connecting member 53 is provided with a first test contact T1 that forms a leakage test circuit at intervals. Pressing the leakage test button 50 can drive the first elastic member 51 to contact the intermediate connecting member 53 to close the first test contact T1;
  • the piece 52 contacts and cooperates with the other end of the intermediate connecting piece 53 to form the second test contact T2 of the leakage test loop.
  • the contact system does not contact the second test contact T2 when the circuit breaker is closed, so that the second test contact T2 is kept closed.
  • the contact system drives the second elastic member 52 to separate from the intermediate connecting member 53 to disconnect the second test contact T2.
  • the two ends of the intermediate connecting piece 53 are respectively matched with the first elastic piece 51 and the second elastic piece 52, which not only can effectively use the limited space in the circuit breaker and avoid increasing the volume of the circuit breaker, but also the second elastic piece 52 is elastic by itself. Maintaining contact with the intermediate connector 53 forms a normally closed contact structure, which has the characteristics of simple structure and low cost.
  • two independent connecting pieces can also be used to respectively cooperate with the first elastic piece 51 and the second elastic piece 52, and both connecting pieces are connected to the leakage test circuit.
  • first elastic element 51 and the second elastic element 52 can be two independent elastic elements, or two elastic structures of the same elastic element.
  • the first elastic element 51 and the second elastic element 52 are respectively made of torsion springs. Both ends belong to the protection scope of the present invention.
  • the second test contact T2 cooperates with the contact mechanism of the contact system, and the second test contact T2 is disconnected and avoided by the contact mechanism.
  • the contact mechanism includes a static contact 221 and a moving contact 222 respectively connected to the line; the operating mechanism 23 can drive the static contact 221 and the moving contact 222 to contact and separate; the moving contact 222 includes a pivot mounted on the housing
  • the contact support 223 that cooperates with the operating mechanism 23 in the assembly, and the movable contact plate 224 arranged on the contact support 223, and the movable contact 225 matched with the static contact 221 is provided on the movable contact plate 224;
  • the second test contact T2 is matched with the contact support 223 of the movable contact 222.
  • the contact support 223 drives the movable contact 225 and the static contact 221 to separate when the circuit breaker is opened, and at the same time drives the second elastic member 52 and the intermediate connecting member 53 is separated; the contact support 223 drives the movable contact 225 to contact the static contact 221 when the circuit breaker is closed, and at the same time, moves away from the second elastic member 52 to reset the second elastic member 52.
  • the second test contact T2 can also cooperate with the handle 21 or the operating mechanism 23 or the movable contact plate 224 of the contact system, which all belong to the protection scope created by the present invention.
  • the circuit breaker created by the present invention includes a plurality of circuit breaker units arranged side by side, each of the plurality of circuit breaker units includes a contact system, and at least one circuit breaker unit includes a leakage protection mechanism, a second of the leakage test mechanism
  • An elastic element 51 and a second elastic element 52 are respectively arranged in two different circuit breaker units, and the first elastic element 51 and the second elastic element 52 are respectively connected to the contact system of the two circuit breaker units, and the leakage test mechanism
  • the middle part of the middle connecting piece 53 passes through the housing assembly, and the two ends of the middle connecting piece 53 of the leakage test mechanism extend into the circuit breaker unit corresponding to the first elastic piece 51 and the second elastic piece 52 respectively.
  • the first elastic member 51 and the second elastic member 52 of this embodiment are respectively connected to the contact system of the two circuit breaker units.
  • the first elastic member 51 and the second elastic member 52 are in contact with both ends of the intermediate connecting member 53, respectively, It can form a path between two lines and simulate leakage fault signals, and has the characteristics of simple structure.
  • the contact system includes a handle 21, a contact mechanism, an operating mechanism 23, a wiring mechanism, a short-circuit protection mechanism 24, and an overload protection mechanism 25.
  • the wiring mechanism includes left wirings respectively arranged at both ends of the circuit breaker unit.
  • the terminal 261 and the right terminal 262, the left terminal 261 is connected to the static contact 221 through the short-circuit protection mechanism 24, and the right terminal 262 is connected to the movable contact plate 224 of the moving contact 222 through the overload protection mechanism 25; connected to each open circuit
  • the second wire 242 between the left connection terminal 261 of the device unit and the short-circuit protection mechanism 24 passes through the zero-sequence current transformer 41; the end of the second elastic member 52 that does not fit with the intermediate connector 53 is connected with the second elastic member 52
  • the second wire 242 of the circuit breaker unit of the element 52 is connected; the first elastic element 51 is connected to the right terminal 262 of the circuit breaker unit provided with the first elastic element 51 through a test resistor 54.
  • an elastic piece 524 is provided in the housing assembly, and the second elastic member 52 is connected to the second wire 242 through the elastic piece 524.
  • the second elastic member 52 is clamped on the elastic sheet 524, and the other end of the elastic sheet 524 is connected to the second wire 242 through the test wire 525.
  • FIGS. 6-10 show specific embodiments of the circuit breaker created by the present invention.
  • the circuit breaker of this embodiment includes two circuit breaker units arranged side by side.
  • the two circuit breaker units are the leakage protection unit A and the circuit breaker protection unit. B.
  • the contact systems of the leakage protection unit A and the circuit breaker protection unit B pass through the zero sequence current transformer 41 of the leakage test mechanism, the leakage protection mechanism, the first elastic member 51 of the leakage test mechanism and the leakage test button of the leakage test mechanism 50 is arranged in the leakage protection unit A, the second elastic member 52 of the leakage test mechanism is arranged in the circuit breaker protection unit B to cooperate with the operating mechanism 23 of the circuit breaker protection unit B, and the housing assembly corresponds to the leakage protection unit A and the circuit breaker
  • An intermediate partition 11 is provided between the protection units B, the middle part of the intermediate connection member 53 of the leakage test mechanism passes through the intermediate partition 11, and one end of the intermediate connection member 53 extends into the leakage protection unit A to cooperate with
  • the first elastic member 51 and the second elastic member 52 of the two break points of the leakage test mechanism are both set in the leakage protection unit A, but there is a certain risk in the linkage of the newly added break point with the operating mechanism of the leakage protection unit A , Because the manual opening of the main current circuit only needs to open the handle of the circuit breaker protection unit B. At this time, the leakage protection unit A is not opened, which will cause the second test contact T2 to remain closed.
  • the present invention uses the first elastic The piece 51 and the second elastic piece 52 are respectively arranged in the leakage protection unit A and the circuit breaker protection unit B, which are safe and reliable.
  • the contact system of the leakage protection unit A in this embodiment has the same structure as the contact system of the circuit breaker protection unit B.
  • the contact systems of the leakage protection unit A and the circuit breaker protection unit B respectively include a handle 21 , Contact mechanism, operating mechanism 23, wiring mechanism, short circuit protection mechanism 24 and overload protection mechanism 25;
  • the contact mechanism includes a static contact 221 and a movable contact 222 that are arranged oppositely.
  • the movable contact 222 includes a contact support 223 pivotally mounted in the housing assembly to cooperate with the operating mechanism 23, and a movable contact on the contact support 223.
  • the contact plate 224 is provided with a moving contact 225 matched with the static contact 221 on the moving contact plate 224.
  • the wiring mechanism includes a left wiring terminal 261 and a right wiring terminal 262 respectively arranged at both ends of the circuit breaker unit. The left wiring terminal 261 passes The short-circuit protection mechanism 24 is connected to the static contact 221, and the right connection terminal 262 is connected to the moving contact plate 224 of the moving contact 222 through the overload protection mechanism 25;
  • the first elastic member 51 of the loop is connected to the right connection terminal 262 of the leakage protection unit A through the test resistor 54.
  • the leakage protection mechanism includes a zero sequence current transformer 41, a leakage operating mechanism 42, a leakage release 43, a circuit board 44 and a leakage handle 45.
  • the leakage operating mechanism 42 and the operating mechanism 23 of the contact system The working principle is similar, and the leakage handle 45 is connected to the handle 21 of the circuit breaker unit, but the leakage operating mechanism 42 is not connected to the moving contact 222;
  • the operating mechanism 23 and the leakage operating mechanism 42 respectively include a rocker arm pivotally mounted in the housing assembly, an energy storage member connected with the rocker arm, and a jumper and a lock buckle respectively pivoted on the rocker arm, and jump
  • the buckle and the lock buckle are in a snap fit with each other, and an unlocking lever 10 is provided between the operating mechanism 23 and the leakage operating mechanism 42;
  • the handle 21 is connected with the leakage handle 45, and when the handle 21 and the leakage handle 45 are rotated, the respective energy storage parts can be compressed respectively, and the respective jumpers and lock buckles can be driven to lock;
  • the short-circuit protection mechanism 24 and the overload protection mechanism 25 unlock the trip and lock of the operating mechanism 23 when the line is short-circuited and overloaded, respectively.
  • the leakage protection mechanism unlocks the leakage operating mechanism 42 when the line leaks.
  • the unlock lever 10 drives the jumper and lock of the operating mechanism 23 to unlock.
  • the unlock lever 10 drives the jumper and lock of the leakage protection mechanism 42 to unlock.
  • the release lever 10 drives the trips and locks of the operating mechanism 23 of all circuit breaker units to unlock, and the operating mechanism of any circuit breaker unit
  • the trips and locks of 23 are unlocked, the operating mechanism 23 of all other circuit breaker units and the trips and locks of the leakage operating mechanism 42 are unlocked by the unlocking lever 10, and all circuits are disconnected.
  • the casing assembly is correspondingly provided with an intermediate partition 11 between the circuit breaker protection unit B and the leakage protection unit A, and the intermediate partition 11 is provided with a protrusion on the side close to the leakage protection unit A.
  • the end of the intermediate connecting piece 53 mated with the second elastic piece 52 is arranged above the short circuit protection mechanism 24 in the circuit breaker protection unit B, and the end of the intermediate connecting piece 53 mated with the first elastic piece 51 extends through the intermediate partition 11 Fit to the top side of the raised structure 111.
  • One end of the middle connecting piece 53 that fits with the first elastic piece 51 extends to the top side of the convex structure 111 for fitting.
  • the top side of the middle connecting piece 53 through the convex structure 111 becomes the middle connecting piece 53.
  • the length of the intermediate connecting member 53 is increased, so that an end of the intermediate connecting member 53 mated with the first elastic member 51 protrudes from the convex structure 111 and hangs in the air.
  • Figures 3-5 and 8 show the specific structure of the intermediate connecting piece 53.
  • the intermediate connecting piece 53 has a zigzag structure.
  • the intermediate connecting piece 53 includes a connecting plate 533 and a first contact plate respectively connected to both ends of the connecting plate 533. 531 and the second contact plate 532, the connecting plate 533 and the second contact plate 532 are arranged on the side of the intermediate partition 11 close to the circuit breaker protection unit B, and the intermediate partition 11 is provided with an escape hole for avoiding the first contact plate 531,
  • the intermediate partition 11 is provided with a limiting groove 112 for limiting the intermediate connecting member 53
  • the side of the connecting plate 533 is provided with a limiting plate 534 that protrudes outward and is in a limiting fit with the limiting groove 112.
  • the limiting groove 112 is provided with a limiting rib 113 that is in position-limiting cooperation with the side surface of the limiting plate 534.
  • FIGS 3-5 and 8 show the specific structure of the second elastic member 52.
  • the second elastic member 52 includes a second spiral part 521 pivotally mounted on the housing assembly, and a second spiral part 521 respectively arranged on the second spiral part 521.
  • the second contact arm 522 and the second connecting arm 523 at both ends, the second spiral portion 521 of the second elastic member 52 and the contact support 223 of the movable contact 22 are oppositely arranged on both sides of the intermediate connecting member 53, and the second The middle part of the contact arm 522 passes under the intermediate connecting piece 53 and then cooperates with the contact support 223.
  • the contact support 223 drives the movable contact 225 and the static contact 221 to separate
  • the second contact arm 522 is pushed to separate the intermediate connecting piece 53.
  • the second test contact T2 is disconnected, and when the contact support 223 drives the movable contact 225 to contact the static contact 221, the second contact arm 522 is reset and contacts the intermediate connector 53 to close the second test contact T2.
  • the second contact arm 522 has a U-shaped structure
  • the contact support 223 is provided with a contact boss 226, one end of the intermediate connector 53 is located inside the second contact arm 522, and one end of the second contact arm 522 is connected to
  • the second spiral portion 521 is connected, and the other end of the second contact portion 522 is provided with a second pushing arm 227 that cooperates with the contact boss 226.
  • the second contact arm 522 can also be arranged between the intermediate connector 53 and the contact support 223.
  • the contact support 223 drives the movable contact 225 to contact the static contact 221, the contact boss 226 pushes the second contact arm.
  • the contact between 522 and the intermediate connecting piece 53 belongs to the protection scope created by the present invention.
  • the second connecting arm 523 is connected to one end of the elastic sheet 524, and the other end of the elastic sheet 524 is connected to the second wire 242 passing through the zero sequence current transformer 41 through the test wire 525, and one end of the elastic sheet 524 is provided with
  • the second connecting arm 523 is limited to the slot 5230, and the other end of the elastic piece 524 is provided with a lower extension piece 5250 connected to the test lead 525.
  • the second spiral portion 521 is arranged above the side of the intermediate connecting piece 53 away from the contact support 223, and the elastic piece 524 is arranged on the side of the handle 21 and above the short circuit protection mechanism 24.
  • the elastic piece 524 includes a vertical piece 5241 and a horizontal piece 5242 connected at one end, and an oblique piece 5243 connected to the other end of the horizontal piece 5242.
  • the vertical piece 5241 is arranged on the horizontal side of the second spiral portion 521, on the side of the vertical piece 5241
  • the second connecting arm 523 is provided with a clamping slot 5230 for limiting and cooperating.
  • One end of the horizontal piece 5242 is connected to the bottom end of the vertical piece 5241, and the other end of the horizontal piece 5242 is connected to the top end of the inclined piece 5243.
  • the bottom end of the 5243 extends above the short circuit protection mechanism 24 of the circuit breaker protection unit B.
  • a lower extension piece 5250 connected to the test lead 525 is provided on the inclined piece 5243.
  • the test lead 525 is removed from the short circuit protection mechanism of the circuit breaker protection unit B.
  • the side surface of 24 penetrates and extends to one end of the short-circuit protection mechanism 24.
  • Figures 3-5 and 10 show the specific structure of the first elastic member 51.
  • the first elastic member 51 includes a first spiral portion 511 pivotally mounted on the housing assembly, and a first spiral portion 511 respectively arranged on the first spiral portion 511.
  • the first contact arm 512 and the first connecting arm 513 at both ends, the first contact arm 512 extends between the middle connecting piece 53 and the leakage test button 50, the first connecting arm 513 passes through the test resistor 54 and the right wiring of the leakage protection unit A
  • the terminal 262 is connected;
  • the first spiral portion 511 is arranged below the leakage test button 50, the first contact arm 512 is in a Z-shaped structure, the first contact arm 512 includes a lower transverse arm 5121 and an upper transverse arm 5123, and is connected to the lower transverse arm 5121
  • the trailing arm 5122 between one end of the upper transverse arm 5123, one end of the lower transverse arm 5121 is connected to the first spiral part 5121, and the end of the lower transverse arm 5121 connected to
  • the bending arm 5114 is connected in the middle. Above one end of the piece 53 and the curved arm 5114 is bent to the side away from the intermediate connecting piece 53, the leakage test button 50 can push the lower cross arm 5121 to drive the outer curved surface of the curved arm 5114 to contact one end of the intermediate connecting piece 53.

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Abstract

一种断路器，其包括壳体组件，以及设置在壳体组件内的接触系统、漏电保护机构和漏电测试机构，接触系统包括手柄（21）、触头机构和操作机构（23），断路器合闸和分闸时通过手柄（21）驱动操作机构（23）闭合或断开触头机构，所述漏电测试机构包括漏电测试按钮（50）以及与漏电保护机构的零序电流互感器（41）配合的漏电测试回路，漏电测试回路包括与漏电测试按钮（50）配合的第一测试触点（T1），以及与接触系统配合的第二测试触点（T2），第二测试触点保持闭合，接触系统在断路器分闸时断开第二测试触点（T2）；接触系统在断路器合闸时避让第二测试触点（T2），使第二测试触点（T2）复位并保持闭合，不会影响触头机构的触头参数，保证了触头机构在合闸时的触头压力。

Description

断路器 技术领域
本发明创造涉及低压电器领域，特别是涉及一种断路器。
背景技术
目前市场上的具有漏电保护的断路器，特别是一体式电磁式剩余电流动作断路器，为了测试断路器的漏电保护功能是否失效，需要将断路器接入线路并将断路器先合闸，再按压测试按钮闭合漏电测试回路的触点，通过漏电测试回路模拟漏电信号，根据断路器能否断开线路判断漏电保护功能是否失效。
但是，如果断路器没有合闸，即断路器处于分闸状态时，如果按压测试按钮闭合漏电测试回路的触点，则会导致断路器的出线端产生电压，留下严重安全隐患。由于低压电器小型化的趋势，导致断路器的体积通常较小，且内部结构也比较紧凑，如果增加漏电测试回路的触点的数量，容易导致断路器体积增加，以及降低断路器性能的问题。
发明内容
本发明创造的目的在于克服现有技术的缺陷，提供一种结构简单、触头机构接触可靠性高的断路器。
为实现上述目的，本发明创造采用了如下技术方案：
一种断路器，其包括壳体组件，以及设置在壳体组件内的接触系统、漏电保护机构和漏电测试机构，接触系统包括手柄、触头机构和操作机构，断路器通过手柄驱动操作机构闭合或断开触头机构，所述漏电测试机构包括漏电测试按钮以及漏电测试回路，漏电测试回路包括与漏电测试按钮配合的第一测试触点，以及与接触系统配合的第二测试触点，接触系统在断路器分闸时驱动第二测试触点断开；接触系统在断路器合闸时避让第二测试触点，使第二测试触点复位保持闭合，测试按钮用于驱动第一测试触点闭合，当第一测试触点和第二测试触点均闭合时漏电测试回路导通。
优选的，所述漏电测试回路包括中间连接件，以及分别与中间连接件两端配合的第一弹性件和第二弹性件，第一弹性件与中间连接件的一端间隔设置形成漏电测试回路的第一测试触点，按下漏电测试按钮能够带动第一弹性件与中间连接件接触将第一测试触点闭合；第二弹性件与中间连接件的另一端接触配合形成漏电测试回路的第二测试触点，接触系统在断路器合闸时不与第二测试触点接触使第二测试触点保持闭合，接触系统在断路器分闸时带动第二弹性件与中间连接件分开将第二测试触点断开。
优选的，所述触头机构包括分别接入线路的静触头和动触头；操作机构能够带动静触头与动触头接触和分开；动触头包括枢转安装在壳体组件内与操作机构配合的触头支持，以及设置在触头支持上的动接触板，在动接触板上设有与静触头配合的动触点；所述第二测试触点与动触头的触头支持配合，触头支 持在断路器分闸时带动动触点与静触头分开，同时带动第二弹性件与中间连接件分开；触头支持在断路器合闸时带动动触点与静触头接触，同时远离第二弹性件使第二弹性件复位。
优选的，包括多个并排设置的断路器单元，多个断路器单元分别包括接触系统，且至少一个断路器单元包括漏电保护机构，漏电测试机构的第一弹性件和第二弹性件分别设置在两个不同的断路器单元内，且第一弹性件和第二弹性件分别与两个断路器单元的接触系统连接，漏电测试机构的中间连接件的中部从壳体组件穿过，漏电测试机构的中间连接件的两端伸到分别与第一弹性件和第二弹性件对应的断路器单元内。
优选的，所述接触系统包括手柄、触头机构、操作机构、接线机构、短路保护机构和过载保护机构，接线机构包括分别设置在断路器单元两端的左接线端子和右接线端子，左接线端子经过短路保护机构与静触头连接，右接线端子经过过载保护机构与动触头的动接触板连接；连接在每个断路器单元的左接线端子与短路保护机构之间的第二导线穿过零序电流互感器；所述第二弹性件不与中间连接件配合的一端与设有第二弹性件的断路器单元的第二导线连接；所述第一弹性件经过测试电阻与设有第一弹性件的断路器单元的右接线端子连接。
优选的，所述第二弹性件包括枢转安装在壳体组件上的第二螺旋部，以及分别设置在第二螺旋部两端的第二接触臂和第二连接臂，第二弹性件的第二螺旋部和动触头的触头支持相对设置在中间连接件的两侧，第二接触臂的中部从中间连接件的下方穿过后与触头支持配合，触头支持带动动触点与静触头分开时推动第二接触臂与中间连接件分开将第二测试触点断开，触头支持带动动触点与静触头接触时使第二接触臂复位并与中间连接件接触将第二测试触点闭合。
优选的，所述第二接触臂呈U字形结构，触头支持上设有触头凸台，中间连接件的一端位于第二接触臂的内侧，第二接触臂的一端与第二螺旋部连接，第二接触部的另一端设有与触头凸台配合的第二推动臂。
优选的，壳体组件内设有导电片，所述第二弹性件卡装在导电片上,导电片的一端设有与第二连接臂限位配合的卡槽，导电片的另一端设有用于接线的下延伸片。
优选的，所述接触系统还包括短路保护机构，所述第二螺旋部设置在中间连接片远离触头支持一侧的上方，所述导电片设置在手柄的一侧，位于短路保护机构的上方，所述导电片包括一端相连的纵片和横片，以及与横片另一端相连的斜片，所述纵片设置在第二螺旋部水平的一侧，在纵片的侧边上设有与第二连接臂限位配合的卡槽，横片的一端与纵片的底端连接，横片的另一端与倾斜设置的斜片的顶端连接，斜片的底端伸到短路保护机构的上方，在斜片上设有下延伸片。
优选的，包括并排设置的漏电保护单元和断路器保护单元，漏电测试机构设置在漏电保护单元和断路器保护单元之间，漏电保护单元和断路器保护单元分别包括接触系统，且漏电保护单元和断路器保护单元的接触系统均穿过漏电测试机构的零序电流互感器，漏电保护机构、漏电测试机构的第一弹性件和漏 电测试机构的漏电测试按钮设置在漏电保护单元内，漏电测试机构的第二弹性件设置在断路器保护单元内与断路器保护单元的操作机构配合，壳体组件对应在漏电保护单元和断路器保护单元之间设有中间隔板，漏电测试机构的中间连接件从中间隔板穿过，中间连接件的一端伸到漏电保护单元内与第一弹性件配合，中间连接件的另一端伸到断路器保护单元内与第二弹性件配合。
优选的，所述漏电保护单元的接触系统与断路器保护单元的接触系统的结构相同，漏电保护单元和断路器保护单元的接触系统分别包括手柄、触头机构、操作机构、接线机构、短路保护机构和过载保护机构；触头机构包括相对设置的静触头和动触头，动触头包括枢转安装在壳体组件内与操作机构配合的触头支持，以及与触头支持上的动接触板，在动接触板上设有与静触头配合的动触点，接线机构包括分别设置在断路器单元两端的左接线端子和右接线端子，左接线端子经过短路保护机构与静触头连接，右接线端子经过过载保护机构与动触头的动接触板连接；连接在断路器保护单元的左接线端子与短路保护机构之间的第二导线穿过零序电流互感器，所述漏电测试回路的第二弹性件与连接在断路器保护单元的左接线端子与短路保护机构之间的第二导线连接，漏电测试回路的第一弹性件经过测试电阻与漏电保护单元的右接线端子连接。
优选的，所述壳体组件对应在断路器保护单元与漏电保护单元之间设有中间隔板，中间隔板在靠近漏电保护单元的一侧设有凸起结构，并在凸起机构靠近断路器保护单元的一侧形成容纳断路器保护单元中接触系统的短路保护机构的空间；所述中间连接件与第二弹性件配合的一端设置在断路器保护单元中短路保护机构的上方，中间连接件与第一弹性件配合的一端穿过中间隔板伸到凸起结构的顶侧配合。
优选的，所述中间连接件呈Z字形结构，中间连接件包括连接板以及分别与连接板两端连接的第一接触板和第二接触板，连接板和第二接触板设置在中间隔板靠近断路器保护单元的一侧，中间隔板上设有避让第一接触板的避让孔，且在中间隔板上设有用于固定中间连接件的限位槽，连接板的侧边设有向外凸起与限位槽限位配合的限位板,限位槽内设有与限位板侧面限位配合的限位筋。
优选的，所述第一弹性件包括枢转安装在壳体组件上的第一螺旋部，以及分别设置在第一螺旋部两端的第一接触臂和第一连接臂，第一接触臂伸到中间连接件与漏电测试按钮之间，第一连接臂经过测试电阻与漏电保护单元的右接线端子连接。
优选的，所述第一螺旋部设置在漏电测试按钮的下方，第一接触臂呈Z字形结构，第一接触臂包括下横臂和上横臂，以及连接在下横臂和上横臂一端之间的纵臂，下横臂的一端与第一螺旋部连接，下横臂与纵臂连接的一端向上倾斜后与漏电测试按钮的底部配合，纵臂向中间连接件的上方延伸后与上横臂的一端连接，上横臂的另一端向靠近中间连接件的方向延伸后与弯曲臂连接，弯曲臂位于中间连接件一端的上方且弯曲臂向远离中间连接件的一侧弯曲，漏电测试按钮能够推动下横臂带动弯曲臂外侧的曲面与中间连接件的一端接触。
本发明创造的断路器，漏电测试回路具有第一测试触点和第二测试触点两个触点，第二测试触点在断路器合闸时保持闭合，在断路器分闸时接触系统驱动第二测试触点断开，不仅能够有效避免断路器分闸时按下漏电测试按钮带来 的危险，而且断路器合闸时第二测试触点不与接触系统接触，不会影响触头机构的触头参数，保证了触头机构在合闸时的触头压力。
此外，通过中间连接件的两端分别与第一弹性件和第二弹性件配合，不仅能够有效利用断路器内有限的空间，避免增加断路器的体积，而且第二弹性件通过自身弹性与中间连接件保持接触形成常闭触点结构，具有结构简单和成本低的特点。
附图说明
图1是本发明创造实施例断路器的结构示意图；
图2是本发明创造实施例断路器单元的结构示意图；
图3是本发明创造实施例断路器的截面图；
图4是本发明创造实施例漏电测试回路的结构示意图；
图5是本发明创造实施例漏电测试回路的俯视图；
图6是本发明创造实施例断路器保护单元远离漏电保护单元一侧的结构示意图；
图7是本发明创造实施例断路器保护单元靠近漏电保护单元一侧的结构示意图；
图8是本发明创造实施例图6的局部放大图；
图9是本发明创造实施例漏电保护单元远离断路器保护单元一侧的结构示意图；
图10是本发明创造实施例漏电保护单元靠近断路器保护单元一侧的结构示意图。
具体实施方式
以下结合附图1至10给出的实施例，进一步说明本发明创造的断路器的具体实施方式。本发明创造的断路器不限于以下实施例的描述。
如图1-2、6所示，本实用新型的断路器包括壳体组件，以及设置在壳体组件内的接触系统、漏电保护机构和漏电测试机构，接触系统包括手柄21、触头机构、操作机构23、接线机构，触头机构包括分别接入线路的静触头221和动触头222，断路器合闸和分闸时通过手柄21驱动操作机构23闭合或断开触头机构。
所述漏电保护机构包括零序电流互感器41，零序电流互感器41检测到线路出现漏电故障时漏电保护机构触发操作机构23脱扣，操作机构23失去平衡后带动静触头221和动触头222分开将线路断开。
如图4-5所示，所述漏电测试机构包括漏电测试按钮50以及与漏电保护机构的零序电流互感器41配合的漏电测试回路，漏电测试回路包括与漏电测试按钮50配合的第一测试触点T1，以及与接触系统配合的第二测试触点T2，第二测试触点T2正常保持闭合(可以理解为是常闭触点)，接触系统在断路器分闸时断开第二测试触点T2；接触系统在断路器合闸时避让第二测试触点T2，使第二测试触点T2复位并保持闭合，测试按钮50用于驱动第一测试触点T1闭合，当第一测试触点T1和第二测试触点T2均闭合时漏电测试回路导通并产生漏电 故障信号，此时如果断路器能够脱扣将线路断开，则断路器的漏电保护能够有效，否则断路器的漏电保护功能失效。
本发明创造的断路器，漏电测试回路具有第一测试触点T1和第二测试触点T2两个触点，第二测试触点T2在断路器合闸时保持闭合，在断路器分闸时接触系统驱动第二测试触点T2断开，不仅能够有效避免断路器分闸时按下漏电测试按钮50带来的危险，而且断路器合闸时第二测试触点T2不与接触系统接触，不会影响触头机构的触头参数，保证了触头机构在合闸时的触头压力。
如图4-5所示，本发明创造的漏电测试回路包括中间连接件53，以及分别与中间连接件两端配合的第一弹性件51和第二弹性件52，第一弹性件51与中间连接件53的一端间隔设置形成漏电测试回路的第一测试触点T1，按下漏电测试按钮50能够带动第一弹性件51与中间连接件53接触将第一测试触点T1闭合；第二弹性件52与中间连接件53的另一端接触配合形成漏电测试回路的第二测试触点T2，接触系统在断路器合闸时不与第二测试触点T2接触使第二测试触点T2保持闭合，接触系统在断路器分闸时带动第二弹性件52与中间连接件53分开将第二测试触点T2断开。通过中间连接件53的两端分别与第一弹性件51和第二弹性件52配合，不仅能够有效利用断路器内有限的空间，避免增加断路器的体积，而且第二弹性件52通过自身弹性与中间连接件53保持接触形成常闭触点结构，具有结构简单和成本低的特点。显然，也可以采用两个独立的连接件分别与第一弹性件51和第二弹性件52配合，两个连接件均接入漏电测试回路。而且第一弹性件51和第二弹性件52可以是两个独立的弹性件，也可以为同一弹性件的两个弹性结构，例如第一弹性件51和第二弹性件52分别是扭簧的两端，这均属于本发明的保护范围。
进一步，所述第二测试触点T2与接触系统的触头机构配合，通过触头机构断开和避让第二测试触点T2。所述触头机构包括分别接入线路的静触头221和动触头222；操作机构23能够带动静触头221与动触头222接触和分开；动触头222包括枢转安装在壳体组件内与操作机构23配合的触头支持223，以及设置在触头支持223上的动接触板224，在动接触板224上设有与静触头221配合的动触点225；所述第二测试触点T2与动触头222的触头支持223配合，触头支持223在断路器分闸时带动动触点225与静触头221分开，同时带动第二弹性件52与中间连接件53分开；触头支持223在断路器合闸时带动动触点225与静触头221接触，同时远离第二弹性件52使第二弹性件52复位。当然，所述第二测试触点T2也可以与接触系统的手柄21或操作机构23或动接触板224配合，都属于本发明创造的保护范围。
如图1-3所示，本发明创造的断路器包括多个并排设置的断路器单元，多个断路器单元分别包括接触系统，且至少一个断路器单元包括漏电保护机构，漏电测试机构的第一弹性件51和第二弹性件52分别设置在两个不同的断路器单元内，且第一弹性件51和第二弹性件52分别与两个断路器单元的接触系统连接，漏电测试机构的中间连接件53的中部从壳体组件穿过，漏电测试机构的中间连接件53的两端伸到分别与第一弹性件51和第二弹性件52对应的断路器单元内。本实施例的第一弹性件51和第二弹性件52分别与两个断路器单元的接触系统连接，第一弹性件51和第二弹性件52分别与中间连接件53的两端接 触时，能够在两个线路之间形成通路并模拟漏电故障信号，具有结构简单的特点。
如图6、9所示，所述接触系统包括手柄21、触头机构、操作机构23、接线机构、短路保护机构24和过载保护机构25，接线机构包括分别设置在断路器单元两端的左接线端子261和右接线端子262，左接线端子261经过短路保护机构24与静触头221连接，右接线端子262经过过载保护机构25与动触头222的动接触板224连接；连接在每个断路器单元的左接线端子261与短路保护机构24之间的第二导线242穿过零序电流互感器41；所述第二弹性件52不与中间连接件53配合的一端与设有第二弹性件52的断路器单元的第二导线242连接；所述第一弹性件51经过测试电阻54与设有第一弹性件51的断路器单元的右接线端子262连接。优选的，壳体组件内设有弹性片524，所述第二弹性件52通过弹性片524与第二导线242连接。所述第二弹性件52卡装在弹性片524上，弹性片524另一端通过测试导线525与第二导线242连接。
如图6-10示出本发明创造的断路器的具体实施例，本实施例的断路器包括两个并排设置的断路器单元，两个断路器单元分别为漏电保护单元A和断路器保护单元B，漏电保护单元A和断路器保护单元B的接触系统均穿过漏电测试机构的零序电流互感器41，漏电保护机构、漏电测试机构的第一弹性件51和漏电测试机构的漏电测试按钮50设置在漏电保护单元A内，漏电测试机构的第二弹性件52设置在断路器保护单元B内与断路器保护单元B的操作机构23配合，壳体组件对应在漏电保护单元A和断路器保护单元B之间设有中间隔板11，漏电测试机构的中间连接件53的中部从中间隔板11穿过，中间连接件53的一端伸到漏电保护单元A内与第一弹性件51配合，中间连接件53的另一端伸到断路器保护单元B内与第二弹性件52配合。通常漏电测试机构的两个断点的第一弹性件51和第二弹性件52均会设置在漏电保护单元A中，但新增断点与漏电保护单元A的操作机构联动会存在一定的风险，因为人为断开主电流回路只需将断路器保护单元B手柄分闸，此时漏电保护单元A并未分闸，会导致第二测试触点T2仍保持闭合，本发明通过将第一弹性件51和第二弹性件52分别设置在漏电保护单元A和断路器保护单元B内，安全可靠。
如图5、8所示，本实施例中漏电保护单元A的接触系统与断路器保护单元B的接触系统的结构相同，漏电保护单元A和的断路器保护单元B的接触系统分别包括手柄21、触头机构、操作机构23、接线机构、短路保护机构24和过载保护机构25；
触头机构包括相对设置的静触头221和动触头222，动触头222包括枢转安装在壳体组件内与操作机构23配合的触头支持223，以及与触头支持223上的动接触板224，在动接触板224上设有与静触头221配合的动触点225，接线机构包括分别设置在断路器单元两端的左接线端子261和右接线端子262，左接线端子261经过短路保护机构24与静触头221连接，右接线端子262经过过载保护机构25与动触头222的动接触板224连接；
连接在断路器保护单元B的左接线端子261与短路保护机构24之间的第二导线242，以及连接在漏电保护单元A的左接线端子261与短路保护机构24之间的第一导线241，均穿过零序电流互感器41，所述漏电测试回路的第二弹性 件52与连接在断路器保护单元B的左接线端子261与短路保护机构24之间的第二导线242连接，漏电测试回路的第一弹性件51经过测试电阻54与漏电保护单元A的右接线端子262连接。
如图10所示，所述漏电保护机构包括零序电流互感器41、漏电操作机构42、漏电脱扣器43、线路板44和漏电手柄45，漏电操作机构42与接触系统的操作机构23的工作原理相似，且漏电手柄45与断路器单元的手柄21连接，但是漏电操作机构42不与动触头222连接；
所述操作机构23和漏电操作机构42分别包括枢转安装在壳体组件内的摇臂、与摇臂连接的储能件，以及分别枢转在摇臂上的跳扣和锁扣，且跳扣和锁扣相互搭扣配合，操作机构23与漏电操作机构42之间设有解锁杆10；
手柄21与漏电手柄45相连，手柄21与漏电手柄45转动时能够分别压缩各自的储能件，并带动各自的跳扣与锁扣搭扣锁定；
短路保护机构24和过载保护机构25分别在线路出现短路和过载时解锁操作机构23的跳扣与锁扣，漏电保护机构在线路出现漏电时解锁漏电操作机构42，漏电操作机构42的跳扣与锁扣解锁时通过解锁杆10带动操作机构23的跳扣与锁扣解锁，操作机构23的跳扣与锁扣解锁时，通过解锁杆10带动漏电保护机构42的跳扣与锁扣解锁。
设有多个断路器单元时，漏电操作机构42的跳扣与锁扣解锁时通过解锁杆10带动所有断路器单元的操作机构23的跳扣与锁扣解锁，任一断路器单元的操作机构23的跳扣与锁扣解锁时，通过解锁杆10带动其它所有断路器单元的操作机构23以及漏电操作机构42的跳扣与锁扣解锁，将所有线路断开。
如图6-7所示，所述壳体组件对应在断路器保护单元B与漏电保护单元A之间设有中间隔板11，中间隔板11在靠近漏电保护单元A的一侧设有凸起结构111，并在凸起机构111靠近断路器保护单元B的一侧形成容纳断路器保护单元B中接触系统的短路保护机构24的空间；
所述中间连接件53与第二弹性件52配合的一端设置在断路器保护单元B中短路保护机构24的上方，中间连接件53与第一弹性件51配合的一端穿过中间隔板11伸到凸起结构111的顶侧配合。中间连接件53与第一弹性件51配合的一端伸到凸起结构111的顶侧配合，第一弹性件51与中间连接件53接触时，通过凸起结构111的顶侧为中间连接件53提供支持，避免使中间连接件53变形。优选的，增加中间连接件53的长度，使中间连接件53与第一弹性件51配合的一端伸出凸起结构111并悬空。
如图3-5、8示出中间连接件53的具体结构，所述中间连接件53呈Z字形结构，中间连接件53包括连接板533以及分别与连接板533两端连接的第一接触板531和第二接触板532，连接板533和第二接触板532设置在中间隔板11靠近断路器保护单元B的一侧，中间隔板11上设有避让第一接触板531的避让孔，且在中间隔板11上设有用于限位中间连接件53的限位槽112，连接板533的侧边设有向外凸起与限位槽112限位配合的限位板534。
进一步，所述限位槽112内设有与限位板534侧面限位配合的限位筋113。
如图3-5、8示出第二弹性件52的具体结构，所述第二弹性件52包括枢转安装在壳体组件上的第二螺旋部521，以及分别设置在第二螺旋部521两端的第 二接触臂522和第二连接臂523，所述第二弹性件52的第二螺旋部521和动触头22的触头支持223相对设置在中间连接件53的两侧，第二接触臂522的中部从中间连接件53的下方穿过后与触头支持223配合，触头支持223带动动触点225与静触头221分开时推动第二接触臂522与中间连接件53分开将第二测试触点T2断开，触头支持223带动动触点225与静触头221接触时使第二接触臂522复位并与中间连接件53接触将第二测试触点T2闭合。
进一步，所述第二接触臂522呈U字形结构，触头支持223上设有触头凸台226，中间连接件53的一端位于第二接触臂522的内侧，第二接触臂522的一端与第二螺旋部521连接，第二接触部522的另一端设有与触头凸台226配合的第二推动臂227。
参阅图6，触头支持223带动动触点225与静触头221分开时，触头支持223做逆时针转动带动动触点225向右移动，同时触头凸台226向下移动推动第二接触臂522与中间接触件53分开；触头支持223带动动触点225与静触头221接触时，触头支持223做顺时针转动带动动触点225向左移动，同时触头凸台226向上移动避让第二接触臂522，第二接触臂522在自身弹力作用下与中间接触件53接触。当然，第二接触臂522也可以设置在中间连接件53与触头支持223之间，触头支持223带动动触点225与静触头221接触时，触头凸台226推动第二接触臂522与中间连接件53接触，都属于本发明创造的保护范围。
进一步，所述第二连接臂523与弹性片524的一端连接，弹性片524的另一端经过测试导线525与穿过零序电流互感器41的第二导线242连接,弹性片524的一端设有与第二连接臂523限位配合的卡槽5230，弹性片524的另一端设有与测试导线525连接的下延伸片5250。
进一步，所述第二螺旋部521设置在中间连接片53远离触头支持223一侧的上方，所述弹性片524设置在手柄21的一侧，位于短路保护机构24的上方，所述弹性片524包括一端相连的纵片5241和横片5242，以及与横片5242另一端相连的斜片5243，所述纵片5241设置在第二螺旋部521水平的一侧，在纵片5241的侧边上设有与第二连接臂523限位配合的卡槽5230，横片5242的一端与纵片5241的底端连接，横片5242的另一端与倾斜设置的斜片5243的顶端连接，斜片5243的底端伸到断路器保护单元B的短路保护机构24的上方，在斜片5243上设有与测试导线525连接的下延伸片5250，测试导线525从断路器保护单元B的短路保护机构24的侧面穿过伸到短路保护机构24的一端。
如图3-5、10示出第一弹性件51的具体结构，所述第一弹性件51包括枢转安装在壳体组件上的第一螺旋部511，以及分别设置在第一螺旋部511两端的第一接触臂512和第一连接臂513，第一接触臂512伸到中间连接件53与漏电测试按钮50之间，第一连接臂513经过测试电阻54与漏电保护单元A的右接线端子262连接；第一螺旋部511设置在漏电测试按钮50的下方，第一接触臂512呈Z字形结构，第一接触臂512包括下横臂5121和上横臂5123，以及连接在下横臂5121和上横臂5123一端之间的纵臂5122，下横臂5121的一端与第一螺旋部5121连接，下横臂5121与纵臂5122连接的一端向上倾斜后与漏电测试按钮50的底部配合，纵臂5122向中间连接件53的上方延伸后与上横臂5123的一端连接，上横臂5123的另一端向靠近中间连接件53的方向延伸后与弯曲 臂5114连接，弯曲臂5114位于中间连接件53一端的上方且弯曲臂5114向远离中间连接件53的一侧弯曲，漏电测试按钮50能够推动下横臂5121带动弯曲臂5114外侧的曲面与中间连接件53的一端接触。
以上内容是结合具体的优选实施方式对本发明创造所作的进一步详细说明，不能认定本发明创造的具体实施只局限于这些说明。对于本发明创造所属技术领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明创造的保护范围。

Claims (15)

  1. 一种断路器，其特征在于：包括壳体组件，以及设置在壳体组件内的接触系统、漏电保护机构和漏电测试机构，接触系统包括手柄(21)、触头机构和操作机构(23)，断路器通过手柄(21)驱动操作机构(23)闭合或断开触头机构，所述漏电测试机构包括漏电测试按钮(50)以及漏电测试回路，漏电测试回路包括与漏电测试按钮(50)配合的第一测试触点(T1)，以及与接触系统配合的第二测试触点(T2)，接触系统在断路器分闸时驱动第二测试触点(T2)断开；接触系统在断路器合闸时避让第二测试触点(T2)，使第二测试触点(T2)复位保持闭合，测试按钮(50)用于驱动第一测试触点(T1)闭合，当第一测试触点(T1)和第二测试触点(T2)均闭合时漏电测试回路导通。
  2. 根据权利要求1所述的断路器，其特征在于：所述漏电测试回路包括中间连接件(53)，以及分别与中间连接件两端配合的第一弹性件(51)和第二弹性件(52)，第一弹性件(51)与中间连接件(53)的一端间隔设置形成漏电测试回路的第一测试触点(T1)，按下漏电测试按钮(50)能够带动第一弹性件(51)与中间连接件(53)接触将第一测试触点(T1)闭合；第二弹性件(52)与中间连接件(53)的另一端接触配合形成漏电测试回路的第二测试触点(T2)，接触系统在断路器合闸时不与第二测试触点(T2)接触使第二测试触点(T2)保持闭合，接触系统在断路器分闸时带动第二弹性件(52)与中间连接件(53)分开将第二测试触点(T2)断开。
  3. 根据权利要求2所述的断路器，其特征在于：所述触头机构包括分别接入线路的静触头(221)和动触头(222)；操作机构(23)能够带动静触头(221)与动触头(222)接触和分开；动触头(222)包括枢转安装在壳体组件内与操作机构(23)配合的触头支持(223)，以及设置在触头支持(223)上的动接触板(224)，在动接触板(224)上设有与静触头(221)配合的动触点(225)；所述第二测试触点(T2)与动触头(222)的触头支持(223)配合，触头支持(223)在断路器分闸时带动动触点(225)与静触头(221)分开，同时带动第二弹性件(52)与中间连接件(53)分开；触头支持(223)在断路器合闸时带动动触点(225)与静触头(221)接触，同时远离第二弹性件(52)使第二弹性件(52)复位。
  4. 根据权利要求2所述的断路器，其特征在于：包括多个并排设置的断路器单元，多个断路器单元分别包括接触系统，且至少一个断路器单元包括漏电保护机构，漏电测试机构的第一弹性件(51)和第二弹性件(52)分别设置在两个不同的断路器单元内，且第一弹性件(51)和第二弹性件(52)分别与两个断路器单元的接触系统连接，漏电测试机构的中间连接件(53)的中部从壳体组件穿过，漏电测试机构的中间连接件(53)的两端伸到分别与第一弹性件(51)和第二弹性件(52)对应的断路器单元内。
  5. 根据权利要求4所述的断路器，其特征在于：所述接触系统包括手柄(21)、触头机构、操作机构(23)、接线机构、短路保护机构(24)和过载保护机构(25)，接线机构包括分别设置在断路器单元两端的左接线端子(261)和右接线端子(262)，左接线端子(261)经过短路保护机构(24)与静触头(221) 连接，右接线端子(262)经过过载保护机构(25)与动触头(222)的动接触板(224)连接；连接在每个断路器单元的左接线端子(261)与短路保护机构(24)之间的第二导线(242)穿过零序电流互感器(41)；所述第二弹性件(52)不与中间连接件(53)配合的一端与设有第二弹性件(52)的断路器单元的第二导线(242)连接；所述第一弹性件(51)经过测试电阻(54)与设有第一弹性件(51)的断路器单元的右接线端子(262)连接。
  6. 根据权利要求2所述的断路器，其特征在于：所述第二弹性件(52)包括枢转安装在壳体组件上的第二螺旋部(521)，以及分别设置在第二螺旋部(521)两端的第二接触臂(522)和第二连接臂(523)，第二弹性件(52)的第二螺旋部(521)和动触头(22)的触头支持(223)相对设置在中间连接件(53)的两侧，第二接触臂(522)的中部从中间连接件(53)的下方穿过后与触头支持(223)配合，触头支持(223)带动动触点(225)与静触头(221)分开时推动第二接触臂(522)与中间连接件(53)分开将第二测试触点(T2)断开，触头支持(223)带动动触点(225)与静触头(221)接触时使第二接触臂(522)复位并与中间连接件(53)接触将第二测试触点(T2)闭合。
  7. 根据权利要求6所述的断路器，其特征在于：所述第二接触臂(522)呈U字形结构，触头支持(223)上设有触头凸台(226)，中间连接件(53)的一端位于第二接触臂(522)的内侧，第二接触臂(522)的一端与第二螺旋部(521)连接，第二接触部(522)的另一端设有与触头凸台(226)配合的第二推动臂(227)。
  8. 根据权利要求6所述的断路器，其特征在于：壳体组件内设有导电片(524)，所述第二弹性件(52)卡装在导电片(524)上,导电片(524)的一端设有与第二连接臂(523)限位配合的卡槽(5230)，导电片(524)的另一端设有用于接线的下延伸片(5250)。
  9. 根据权利要求8所述的断路器，其特征在于：所述接触系统还包括短路保护机构(24)，所述第二螺旋部(521)设置在中间连接片(53)远离触头支持(223)一侧的上方，所述导电片(524)设置在手柄(21)的一侧，位于短路保护机构(24)的上方，所述导电片(524)包括一端相连的纵片(5241)和横片(5242)，以及与横片(5242)另一端相连的斜片(5243)，所述纵片(5241)设置在第二螺旋部(521)水平的一侧，在纵片(5241)的侧边上设有与第二连接臂(523)限位配合的卡槽(5230)，横片(5242)的一端与纵片(5241)的底端连接，横片(5242)的另一端与倾斜设置的斜片(5243)的顶端连接，斜片(5243)的底端伸到短路保护机构(24)的上方，在斜片(5243)上设有下延伸片(5250)。
  10. 根据权利要求2所述的断路器，其特征在于：包括并排设置的漏电保护单元(A)和断路器保护单元(B)，漏电测试机构设置在漏电保护单元(A)和断路器保护单元(B)之间，漏电保护单元(A)和断路器保护单元(B)分别包括接触系统，且漏电保护单元(A)和断路器保护单元(B)的接触系统均穿过漏电测试机构的零序电流互感器(41)，漏电保护机构、漏电测试机构的第一弹性件(51)和漏电测试机构的漏电测试按钮(50)设置在漏电保护单元(A)内，漏电测试机构的第二弹性件(52)设置在断路器保护单元(B)内与断路器 保护单元(B)的操作机构(23)配合，壳体组件对应在漏电保护单元(A)和断路器保护单元(B)之间设有中间隔板(11)，漏电测试机构的中间连接件(53)从中间隔板(11)穿过，中间连接件(53)的一端伸到漏电保护单元(A)内与第一弹性件(51)配合，中间连接件(53)的另一端伸到断路器保护单元(B)内与第二弹性件(52)配合。
  11. 根据权利要求10所述的断路器，其特征在于：所述漏电保护单元(A)的接触系统与断路器保护单元(B)的接触系统的结构相同，漏电保护单元(A)和断路器保护单元(B)的接触系统分别包括手柄(21)、触头机构、操作机构(23)、接线机构、短路保护机构(24)和过载保护机构(25)；触头机构包括相对设置的静触头(221)和动触头(222)，动触头(222)包括枢转安装在壳体组件内与操作机构(23)配合的触头支持(223)，以及与触头支持(223)上的动接触板(224)，在动接触板(224)上设有与静触头(221)配合的动触点(225)，接线机构包括分别设置在断路器单元两端的左接线端子(261)和右接线端子(262)，左接线端子(261)经过短路保护机构(24)与静触头(221)连接，右接线端子(262)经过过载保护机构(25)与动触头(222)的动接触板(224)连接；连接在断路器保护单元(B)的左接线端子(261)与短路保护机构(24)之间的第二导线(242)穿过零序电流互感器(41)，所述漏电测试回路的第二弹性件(52)与连接在断路器保护单元(B)的左接线端子(261)与短路保护机构(24)之间的第二导线(242)连接，漏电测试回路的第一弹性件(51)经过测试电阻(54)与漏电保护单元(A)的右接线端子(262)连接。
  12. 根据权利要求10所述的断路器，其特征在于：所述壳体组件对应在断路器保护单元(B)与漏电保护单元(A)之间设有中间隔板(11)，中间隔板(11)在靠近漏电保护单元(A)的一侧设有凸起结构(111)，并在凸起机构(111)靠近断路器保护单元(B)的一侧形成容纳断路器保护单元(B)中接触系统的短路保护机构(24)的空间；所述中间连接件(53)与第二弹性件(52)配合的一端设置在断路器保护单元(B)中短路保护机构(24)的上方，中间连接件(53)与第一弹性件(51)配合的一端穿过中间隔板(11)伸到凸起结构(111)的顶侧配合。
  13. 根据权利要求12所述的断路器，其特征在于：所述中间连接件(53)呈Z字形结构，中间连接件(53)包括连接板(533)以及分别与连接板(533)两端连接的第一接触板(531)和第二接触板(532)，连接板(533)和第二接触板(532)设置在中间隔板(11)靠近断路器保护单元(B)的一侧，中间隔板(11)上设有避让第一接触板(531)的避让孔，且在中间隔板(11)上设有用于固定中间连接件(53)的限位槽(112)，连接板(533)的侧边设有向外凸起与限位槽(112)限位配合的限位板(534),限位槽(112)内设有与限位板(534)侧面限位配合的限位筋(113)。
  14. 根据权利要求10所述的断路器，其特征在于：所述第一弹性件(51)包括枢转安装在壳体组件上的第一螺旋部(511)，以及分别设置在第一螺旋部(511)两端的第一接触臂(512)和第一连接臂(513)，第一接触臂(512)伸到中间连接件(53)与漏电测试按钮(50)之间，第一连接臂(513)经过测试电阻(54)与漏电保护单元(A)的右接线端子(262)连接。
  15. 根据权利要求14所述的断路器，其特征在于：所述第一螺旋部(511)设置在漏电测试按钮(50)的下方，第一接触臂(512)呈Z字形结构，第一接触臂(512)包括下横臂(5121)和上横臂(5123)，以及连接在下横臂(5121)和上横臂(5123)一端之间的纵臂(5122)，下横臂(5121)的一端与第一螺旋部(5121)连接，下横臂(5121)与纵臂(5122)连接的一端向上倾斜后与漏电测试按钮(50)的底部配合，纵臂(5122)向中间连接件(53)的上方延伸后与上横臂(5123)的一端连接，上横臂(5123)的另一端向靠近中间连接件(53)的方向延伸后与弯曲臂(5114)连接，弯曲臂(5114)位于中间连接件(53)一端的上方且弯曲臂(5114)向远离中间连接件(53)的一侧弯曲，漏电测试按钮(50)能够推动下横臂(5121)带动弯曲臂(5114)外侧的曲面与中间连接件(53)的一端接触。
PCT/CN2020/128888 2019-11-26 2020-11-15 断路器 WO2021104065A1 (zh)

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