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EP3540755B1 - Mécanisme de protection de contact de circuit de disjoncteur - Google Patents

Mécanisme de protection de contact de circuit de disjoncteur Download PDF

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Publication number
EP3540755B1
EP3540755B1 EP19162884.1A EP19162884A EP3540755B1 EP 3540755 B1 EP3540755 B1 EP 3540755B1 EP 19162884 A EP19162884 A EP 19162884A EP 3540755 B1 EP3540755 B1 EP 3540755B1
Authority
EP
European Patent Office
Prior art keywords
contact
connecting rod
moving contact
track
protective cover
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.)
Active
Application number
EP19162884.1A
Other languages
German (de)
English (en)
Other versions
EP3540755A1 (fr
Inventor
Yan Yan XU
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP3540755A1 publication Critical patent/EP3540755A1/fr
Application granted granted Critical
Publication of EP3540755B1 publication Critical patent/EP3540755B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/64—Protective enclosures, baffle plates, or screens for contacts
    • 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
    • H01H71/10—Operating or release mechanisms
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the present invention relates to the field of circuit protection, in particular a circuit breaker circuit contact protection mechanism.
  • An arc fault detection circuit breaker is also an electrical line protection apparatus, abbreviated as AFDD (arc fault detection device), the main function thereof being to detect and distinguish dangerous ground arc faults, parallel arc faults and series arc faults, and to promptly drive the action of an apparatus causing a current to be cut off, to avoid an electrical fire.
  • AFDD arc fault detection device
  • It employs embedded system digital circuit control and an original arc characteristic identification algorithm, is small in volume but strong in functionality, integrates a leakage current protection function, realizes automatic monitoring of and protection against fault arcs and leakage currents, and effectively ensures the safety of low-voltage distribution lines and electrical equipment as well as the safety of humans.
  • Fig. 1 is a schematic diagram of a circuit connection structure of a circuit of the present invention. Specifically, a protection circuit for preventing damage to a circuit board in different power supply modes is disclosed in the circuit shown in fig. 1 .
  • a circuit breaker circuit contact protection mechanism according to claim 1 effectively solves the technical problem in the prior art that due to the fact that circuit contacts are too close together, it is not possible to ensure that there is sufficient creepage distance, and the electric gap might be broken down.
  • the present application provides a circuit breaker circuit contact protection mechanism, comprising a first contact and a moving contact, and an actuating mechanism.
  • the first contact is electrically connected to a circuit.
  • the moving contact is a conductor for connecting the first contact to another contact on the circuit.
  • the actuating mechanism drives a first end of the moving contact to move so that the first end comes into contact with or is disconnected from the first contact.
  • a moving contact protective cover is an insulator, the actuating mechanism moving in linkage with the moving contact protective cover and the first end respectively; when the first end is in contact with the first contact, the moving contact protective cover is located outside a region of contact of the first end and the first contact, and when the first end gradually moves away and is disconnected from the first contact, the moving contact protective cover moves towards a region between the first end and the first contact and finally moves to the region between the first end and the first contact.
  • the moving contact protective cover is driven by the actuating mechanism to form a barrier between the first contact and the moving contact to prevent breakdown by high voltage.
  • the actuating mechanism is used to enable movement of the moving contact protective cover and the first end in linkage, increasing the compactness of the mechanism design.
  • the actuating mechanism comprises a base and a driving member, and a first connecting rod.
  • a first track and a second track are disposed on the base, the first end sliding along the first track so that the first end comes into contact with or is disconnected from the first contact.
  • the driving member slides along the second track.
  • One end of the first connecting rod is rotatably connected to the driving member, and another end of the first connecting rod slides along the first track and is rotatably connected to the moving contact.
  • a third track is disposed on the moving contact protective cover so that the driving member slides on the third track and is rotatably connected to the moving contact protective cover, a first rotation shaft being disposed on the moving contact protective cover, the first rotation shaft being disposed on the base so that the moving contact protective cover rotates along the first rotation shaft to form a lever mechanism, and the moving contact protective cover being provided with a shield to realize movement in linkage to a region between the first end and the first contact when the first end moves away from the first contact.
  • This embodiment provides a specific actuating mechanism structure and manner of movement in linkage.
  • the actuating mechanism further comprises an operating handle and a second connecting rod; a second rotation shaft is disposed on the operating handle, the second rotation shaft being disposed on the base and causing the operating handle to rotate on its own axis along the second rotation shaft.
  • One end of the second connecting rod is rotatably connected to the driving member and slides along the second track; another end of the second connecting rod is rotatably connected to the operating handle and disposed on one side of the second rotation shaft so that the second connecting rod and the operating handle form an eccentric wheel structure.
  • the two ends of the first connecting rod are first connecting rod rotation shafts disposed in a radial direction of the first connecting rod, the first connecting rod rotation shafts at the two ends of the first connecting rod being for rotatably connecting to the driving member and the moving contact respectively, and the first connecting rod rotation shaft rotatably connected to the moving contact being inserted in the first track, the first track being a long hole.
  • This embodiment provides a specific structure of the first connecting rod, and a specific connection relationship with the driving member and the moving contact.
  • the two ends of the second connecting rod are second connecting rod rotation shafts disposed in a radial direction of the second connecting rod, the second connecting rod rotation shafts at the two ends of the second connecting rod being for rotatably connecting to the operating handle and the driving member respectively, and the second connecting rod rotation shaft rotatably connected to the driving member being inserted in the second track, the second track being a long hole.
  • This embodiment provides a specific structure of the second connecting rod, and a specific connection relationship with the operating handle and the driving member.
  • the first contact comprises an elastic connecting plate, one end of the elastic connecting plate being connected to the circuit, and another end being an elastic extensible end.
  • the embodiment provides a specific structure in which the elastic connecting plate is disposed on the first contact.
  • the moving contact protective cover is further provided with a first rotation shaft and a shield, the first rotation shaft being disposed in a radial direction of the moving contact protective cover.
  • the shield is disposed in a manner corresponding to a contour of the moving contact; the third track is disposed in a length direction of the moving contact protective cover.
  • the third track and the shield are disposed on two sides of the first rotation shaft. This embodiment provides a structural positional relationship among the third track, the shield and the first rotation shaft.
  • the third track is a long hole disposed in the length direction of the moving contact protective cover. This embodiment provides a specific structure of the third track.
  • the shield is disposed at an end of the moving contact protective cover. This embodiment provides a specific position in which the shield is disposed.
  • the reference labels are as follows: Label Meaning 1 circuit 11 first contact 2 moving contact 3 actuating mechanism 31 first end 4 moving contact protective cover 41 third track 42 first rotation shaft 43 shield 5 base 51 first track 52 second track 6 driving member 7 first connecting rod 71 first connecting rod rotation shaft 8 operating handle 81 second rotation shaft 9 second connecting rod 91 second connecting rod rotation shaft 111 elastic connecting plate 10 second contact
  • a circuit board connection circuit having a protection function is disclosed in the figure.
  • Two power supply modes are provided for a circuit breaker design, if only two switch contacts, K1 and K2, are used. In one of these power supply modes, a circuit board will be damaged as a result of being directly connected to a power supply system.
  • an arrangement in which a switch node K3 is added is also provided to solve the abovementioned problem.
  • a corresponding actuating mechanism 3 is also designed in a circuit breaker to solve the problem of the time sequence of contact or opening of the switch nodes K1, K2 and K3.
  • the applicant has also found that the moving contact is too close to the contact, and there is no corresponding protection mechanism to prevent the problem of breakdown by high voltage due to the electric gap and creepage distance between the two parts being insufficient.
  • Fig. 2 is a schematic diagram of the internal structure of a circuit breaker when a moving contact and a first contact are disconnected in the present invention
  • fig. 3 is a schematic diagram of the internal structure of the circuit breaker when the moving contact and the first contact are in contact in the present invention
  • Fig. 4 is a partial enlarged schematic diagram of the assembled structure of a moving contact protective cover and a base in the present invention.
  • Fig. 5 is a simplified structural drawing of the present invention when the moving contact and the first contact are disconnected.
  • Fig. 6 is a simplified structural drawing of the present invention when the moving contact and the first contact are in contact.
  • the present application provides a circuit breaker circuit contact protection mechanism, comprising a circuit 1 and a moving contact 2, an actuating mechanism 3, and a moving contact protective cover 4.
  • a first contact 11 is a closing contact of a K3 switch in the circuit 1
  • the moving contact 2 is essentially a conductor connecting K2 and K3 contacts. Since two ends in contact with the moving contact 2 are at the same potential, as can be seen from fig. 1 , the actuating mechanism 3 drives a first end 31 of the moving contact 2 to move so that the first end 31 comes into contact with or is disconnected from the first contact 11.
  • the actuating mechanism 3 need not be specially defined, as long as it drives the first end 31 of the moving contact 2 to come into contact with or be disconnected from the first contact 11. At the same time, the actuating mechanism 3 moves in linkage with the moving contact protective cover 4 and the first end 31 respectively; the actuating mechanism 3 causes the moving contact protective cover 4 to move in cooperation with both the first end 31 and the first contact 11, according to a movement relationship between the first end 31 and the first contact 11. When the first end 31 and the first contact 11 are disconnected, the moving contact protective cover 4 presents an obstruction between the first end 31 and the first contact 11.
  • the moving contact protective cover 4 is an insulator, a creepage distance and an electrical gap between the first end 31 and the first contact 11 are enabled to attain a required safe distance, preventing breakdown of the two parts due to high voltage. When the first end 31 and the first contact 11 come into contact, the moving contact protective cover 4 does not impede contact between the two parts.
  • the present application provides a circuit breaker circuit contact protection mechanism, comprising a circuit 1 and a moving contact 2, as well as an actuating mechanism 3 and a moving contact protective cover 4; a first contact 11 is electrically connected to the circuit 1.
  • the moving contact 2 is a conductor for connecting the first contact 11 to another contact in the circuit 1.
  • the other contact here is represented as a K2 contact, of course along with subsequent further improvement of the circuit 1.
  • the actuating mechanism 3 drives a first end 31 of the moving contact 2 to move so that the first end 31 comes into contact with or is disconnected from the first contact 11.
  • the actuating mechanism 3 in addition to a purely mechanical mechanism, may also cooperate with certain electrically driven mechanisms.
  • the moving contact protective cover 4 is an insulator.
  • the actuating mechanism 3 moves in linkage with the moving contact protective cover 4 and the first end 31 respectively, specifically in the following way: when the first end 31 is in contact with the first contact 11, the moving contact protective cover 4 is located outside a region of contact of the first end 31 and the first contact 11; when the first end 31 gradually moves away and is disconnected from the first contact 11, the moving contact protective cover 4 moves towards a region between the first end 31 and the first contact 11, and finally moves to the region between the first end 31 and the first contact 11.
  • This embodiment provides a technical solution in which a creepage distance and an electrical gap between the first end 31 and the first contact 11 therein are ensured by means of the moving contact protective cover 4, and secondary design of the moving contact protective cover 4 is simplified through movement in linkage with the original actuating mechanism 3.
  • Fig. 7 is a schematic diagram of the layout of a first track and a second track on a base of the present invention.
  • the actuating mechanism 3 comprises a base 5 and a driving member 6, and a first connecting rod 7.
  • the base 5 here is a general concept; all components capable of providing rigid body support for the actuating mechanism 3 and other components can be understood to be bases 5; here, neither the specific structure of the base nor the quantity thereof are defined.
  • a first track 51 and a second track 52 are disposed on the base 5; the first end 31 slides along the first track 51 so that the first end 31 comes into contact with or is disconnected from the first contact 11.
  • the first contact 11 here is designed as a fixed elastic contact; the driving member 6 slides along the second track 52; one end of the first connecting rod 7 is rotatably connected to the driving member 6, and another end thereof slides along the first track 51 and is rotatably connected to the moving contact 2.
  • the rotatable connection here is preferably an articulated connection.
  • the actuating mechanism 3 and other components connected thereto are all designed in a two-dimensional system. In other words, this can be understood to mean that the actuating mechanism 3 and other components connected thereto are a connecting rod mechanism, but there is no restriction to being designed in a two-dimensional system.
  • the first track 51 here is an arcuate track
  • the second track 52 is a straight track.
  • a third track 41 is disposed on the moving contact protective cover 4, so that the driving member 6 slides on the third track 41 and is rotatably connected to the moving contact protective cover 4; the rotatable connection here may also be understood to be an articulated connection.
  • a first rotation shaft 42 is disposed on the moving contact protective cover 4; the first rotation shaft 42 is disposed on the base 5 so that the moving contact protective cover 4 rotates along the first rotation shaft 42 to form a lever mechanism.
  • the moving contact protective cover 4 is provided with a shield 43 to realize movement in linkage to a region between the first end 31 and the first contact 11 when the first end 31 moves away from the first contact 11. It must be specifically pointed out that a triggering apparatus (i.e.
  • the actuating mechanism 3 can attain the design requirements of the present application as long as it can cause the driving member 6 to slide up and down along the second track 52 as required; this embodiment provides a specific structure of an actuating mechanism 3, and discloses the manner in which the specific structure moves in linkage with the moving contact protective cover 4. Based on the description of the embodiment above, it can be discovered that the manner of movement in linkage is a manner of gradual change. In other words, the movement of the moving contact protective cover 4 and the movement of the first end 31 and the first contact 11 is a process of gradual change; the moving contact protective cover 4 (in particular the shield 43 thereof) gradually moves to a region between the first end 31 and the first contact 11 or moves away from the region of contact of the two parts.
  • the actuating mechanism 3 further comprises an operating handle 8 and a second connecting rod 9.
  • a second rotation shaft 81 is disposed on the operating handle 8; the second rotation shaft 81 is disposed on the base 5 and causes the operating handle 8 to rotate on its own axis along the second rotation shaft 81.
  • One end of the second connecting rod 9 is rotatably connected to the driving member 6 and slides along the second track 52; another end of the second connecting rod 9 is rotatably connected to the operating handle 8, and is disposed on one side of the second rotation shaft 81 so that the second connecting rod 9 and the operating handle 8 form an eccentric wheel structure.
  • the rotatable connection here may also be understood to be an articulated connection.
  • a triggering mechanism of the actuating mechanism 3 and a corresponding mechanical mechanism are provided, and sliding of the driving member 6 is realized by controlling the operating handle 8.
  • Fig. 9 is a structural schematic diagram of the first connecting rod of the present invention.
  • the two ends of the first connecting rod 7 are first connecting rod rotation shafts 71 disposed in a radial direction of the first connecting rod 7.
  • the first connecting rod rotation shafts 71 at the two ends of the first connecting rod 7 are for rotatably connecting to the driving member 6 and the moving contact 2 respectively, and the first connecting rod rotation shaft 71 rotatably connected to the moving contact 2 is inserted in the first track 51; the first track 51 is a long hole.
  • This embodiment provides a specific structure of the first connecting rod, and further discloses the manner in which sliding of the moving contact 2 in the first track 51 is realized at the same time as articulated connection is realized. This is because the first connecting rod rotation shaft 71 connected to the moving contact 2 serves as a rotation shaft of the articulated connection therein, and also serves as a slider sliding in the first track 51.
  • Fig. 10 is a structural schematic diagram of the second connecting rod of the present invention.
  • the two ends of the second connecting rod 9 are second connecting rod rotation shafts 91 disposed in a radial direction of the second connecting rod 9.
  • the second connecting rod rotation shafts 91 at the two ends of the second connecting rod 9 are for rotatably connecting to the operating handle 8 and the driving member 6 respectively, and the second connecting rod rotation shaft 91 rotatably connected to the driving member 6 is inserted in the second track 52; the second track 52 is a long hole.
  • This embodiment provides a specific structure of the second connecting rod, and further discloses the manner in which sliding of the driving member 6 in the second track 52 is realized at the same time as articulated connection is realized, because the second connecting rod rotation shaft 91 connected to the driving member 6 serves as a rotation shaft of the articulated connection therein, and also serves as a slider sliding in the second track 52.
  • the first contact 11 comprises an elastic connecting plate 111; one end of the elastic connecting plate 111 is connected to the circuit 1, and another end is an elastic extensible end.
  • the first contact 11 is a fixed elastic contact, but it needs to have a certain degree of elasticity; this also foreshadows subsequent design. A specific description will be provided in the basic principles and operating process of the circuit breaker circuit contact protection mechanism below; no further superfluous description is provided here.
  • Fig. 8 is a schematic diagram of the external structure of the moving contact protective cover of the present invention.
  • the present application provides a specific structure of the moving contact protective cover.
  • a third track 41 and a first rotation shaft 42, and a shield 43, are disposed on the moving contact protective cover 4.
  • the third track 41 is disposed in a length direction of the moving contact protective cover 4
  • the first rotation shaft 42 is disposed in a radial direction of the moving contact protective cover 4
  • the shield 43 is disposed in a manner corresponding to the contour of the moving contact.
  • the shield 43 is an arcuate structure for the purpose of shielding the first end 31 therein.
  • the third track 41 and the shield 43 are disposed on two sides of the first rotation shaft 42.
  • the design scheme of this embodiment is due to the fact that when a lever mechanism has a fulcrum in the middle and displacement moving ends at two ends, the efficiency of displacement change thereof is highest.
  • the shield 43 is disposed at an end of the moving contact protective cover 4.
  • the end provided with the shield 43 is a free end of the moving contact protective cover 4.
  • the first contact 11 is a closing contact of the K3 switch
  • a second contact 10 lower down in the figure is a closing contact of K2. Since the moving contact 2 is a conductor, it can be seen from the circuit 1 that the closing contact at one end of K3 and the closing contact at one end of K2 are at the same potential, therefore the moving contact 2 may be understood to be connected to N and connected in series with a conductive wire of K3.
  • the actuating mechanism 3 disclosed in figs. 2 to 6 is used; the use of the actuating mechanism 3 is continued in the present application.
  • the difference is that an elastic structure of the first contact is changed to the elastic connecting plate 111.
  • the actuating mechanism 3 will continue to push the first end 31 of the moving contact 2 to move towards the first contact 11; at this time, since the first contact 11 is an elastic end, the first contact 11 will continue to retract so as to ensure that the second contact 10 comes into contact with the other end of the moving contact 2 to achieve the energization time sequence requirement.
  • the second contact 10 is disconnected from the moving contact 2 first. Since the first contact 11 is an elastic end, at this time the first end 31 of the moving contact 2 is not disconnected from the first contact 11; the first end 31 and the first contact 11 are gradually separated and disconnected as the moving contact 2 continues to move away along the first track 51. In this process, the requirement regarding the time sequence is also simultaneously met.
  • the moving contact protective cover 4 is also introduced for this improvement.
  • the moving contact protective cover 4 realizes movement in linkage with the actuating mechanism 3 through the third track 41 disposed above.
  • a further improvement is accomplished, with the structure of the original actuating mechanism 3 being substantially unchanged.
  • the operating handle 8 When rotating, the operating handle 8 will rotate on its own axis around the second rotation shaft 81; due to the eccentric mechanism formed by the second connecting rod 9 and the operating handle 8, the second connecting rod 9 will drive the driving member 6 rotatably connected to the other end thereof to slide along the second track 52. During sliding of the driving member 6, the moving contact protective cover 4 will be driven to swing along the first rotation shaft 42.
  • the moving contact protective cover 4 is disposed in the actuating mechanism 3.
  • the moving contact protective cover 4 moves in linkage with the original actuating mechanism 3 to block a space between the first contact 11 and the first end 31 when the two parts are disconnected, thereby meeting a design requirement of the two parts in terms of creepage distance and electrical gap.
  • An entire actuating mechanism 3 having a specific structure is specifically designed; after providing the moving contact protective cover 4, the time sequence requirement for the moving contact 2 coming into contact with and being disconnected from the first contact 11 and the second contact 10 respectively is still ensured.
  • the elastic structure of the original first contact 11 is changed; the elastic connecting plate 111 is used to achieve a structural design requirement of the actuating mechanism 3 for the first contact 11.
  • a specific structure of the moving contact protective cover 4 is disclosed, such that it is further optimized at the same time as being able to attain a design requirement.

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  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (10)

  1. Mécanisme de protection de contact de circuit de disjoncteur, caractérisé en ce qu'il comprend :
    un premier contact (11), raccordé électriquement à un circuit (1), et
    un contact mobile (2), qui est un conducteur destiné au raccordement du premier contact (11) à un autre contact sur le circuit (1),
    un mécanisme d'actionnement (3), qui entraîne une première borne (31) du contact mobile (2) à se déplacer de sorte que la première borne (31) vienne en contact avec ou soit déconnectée du premier contact (11),
    un couvercle de protection de contact mobile (4), qui est un isolant et comprend un blindage (43), disposé d'une manière correspondant à un contour du contact mobile (2), le mécanisme d'actionnement (3) se déplaçant en liaison avec le couvercle de protection de contact mobile (4) et la première borne (31) respectivement, lorsque la première borne (31) est en contact avec le premier contact (11), le couvercle de protection de contact mobile (4) se situant à l'extérieur d'une zone de contact de la première borne (31) et du premier contact (11), et lorsque la première borne (31) se déplace graduellement à l'écart de et est déconnectée du premier contact (11), le couvercle de protection de contact mobile (4) se déplace vers une zone entre la première borne (31) et le premier contact (11) et finalement se déplace vers la zone entre la première borne (31) et le premier contact (11), caractérisé en ce que ledit blindage possède une structure arquée dans le but de protéger ladite première borne.
  2. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 1, caractérisé en ce que le mécanisme d'actionnement (3) comprend :
    une base (5), avec une première piste (51) et une deuxième piste (52) qui sont disposées sur la base (5), la première borne (31) coulissant le long de la première piste (51) de sorte que la première borne (31) vienne en contact avec ou soit déconnectée du premier contact (11), et
    un élément d'entraînement (6), coulissant le long de la deuxième piste (52),
    une première tige de raccordement (7), avec une extrémité de la première tige de raccordement (7) qui est raccordée de manière rotative à l'élément d'entraînement (6), et une autre extrémité de la première tige de raccordement (7) qui coulisse le long de la première piste (51) et qui est raccordée de manière rotative au contact mobile (2),
    une troisième piste (41) qui est disposée sur le couvercle de protection de contact mobile (4) de sorte que l'élément d'entraînement (6) coulisse sur la troisième piste (41) et est raccordé de manière rotative au couvercle de protection de contact mobile (4), un premier arbre de rotation (42) qui est disposé sur le couvercle de protection de contact mobile (4), le premier arbre de rotation (42) étant disposé sur la base (5) de sorte que le couvercle de protection de contact mobile (4) pivote le long du premier arbre de rotation (42) de façon à former un mécanisme de levier, et le couvercle de protection de contact mobile (4) qui est muni d'un blindage (43) de façon à réaliser un mouvement en liaison à une zone entre la première borne (31) et le premier contact (11) lorsque la première borne (31) se déplace à l'écart du premier contact (11).
  3. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 2, caractérisé en ce que le mécanisme d'actionnement (3) comprend en outre :
    une poignée de commande (8), avec un deuxième arbre de rotation (81) disposé sur la poignée de commande (8), le deuxième arbre de rotation (81) étant disposé sur la base (5) et amenant la poignée de commande (8) à pivoter sur son propre axe le long du deuxième arbre de rotation (81),
    une deuxième tige de raccordement (9), avec une extrémité de la deuxième tige de raccordement (9) qui est raccordée de manière rotative à l'élément d'entraînement (6) et qui coulisse le long de la deuxième piste (52), et une autre extrémité de la deuxième tige de raccordement (9) qui est raccordée de manière rotative à la poignée de commande (8), et qui est disposée sur un côté du deuxième arbre de rotation (81) de sorte que la deuxième tige de raccordement (9) et la poignée de commande (8) forment une structure de roue excentrique.
  4. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 2, caractérisé en ce que
    les deux extrémités de la première tige de raccordement (7) sont des arbres de rotation de la première tige de raccordement (71) disposés dans une direction radiale de la première tige de raccordement (7), les arbres de rotation de la première tige de raccordement (71) aux deux extrémités de la première tige de raccordement (7) étant destinés à un raccordement rotatif à l'élément d'entraînement (6) et au contact mobile (2) respectivement, et l'arbre de rotation de la première tige de raccordement (71) étant raccordé de manière rotative au contact mobile (2) qui est inséré dans la première piste (51), la première piste (51) étant un orifice long.
  5. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 3, caractérisé en ce que
    les deux extrémités de la deuxième tige de raccordement (9) sont des arbres de rotation de la deuxième tige de raccordement (91) disposés dans une direction radiale de la deuxième tige de raccordement (9), les arbres de rotation de la deuxième tige de raccordement (91) aux deux extrémités de la deuxième tige de raccordement (9) étant destinés à un raccordement rotatif à la poignée de commande (8) et l'élément d'entraînement (6) respectivement, et l'arbre de rotation de la deuxième tige de raccordement (91) étant raccordé de manière rotative à l'élément d'entraînement (6) qui est inséré dans la deuxième piste (52), la deuxième piste (52) étant un orifice long.
  6. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 1, caractérisé en ce que le premier contact (11) comprend :
    une plaque de connexion élastique (111), une extrémité de la plaque de connexion élastique (111) étant raccordée au circuit (1), et une autre extrémité étant une extrémité extensible élastique.
  7. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 2, caractérisé en ce que le couvercle de protection de contact mobile (4) est en outre muni de :
    un premier arbre de rotation (42), disposé dans une direction radiale du couvercle de protection de contact mobile (4), et
    la troisième piste (41), disposée dans un sens de la longueur du couvercle de protection de contact mobile (4).
  8. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 7, caractérisé en ce que la troisième piste (41) et le blindage (43) sont disposés sur deux côtés du premier arbre de rotation (42).
  9. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 7, caractérisé en ce que la troisième piste (41) est un orifice long disposé dans le sens de la longueur du couvercle de protection de contact mobile (4).
  10. Mécanisme de protection de contact de circuit de disjoncteur selon la revendication 7, caractérisé en ce que le blindage (43) est disposé à une extrémité du couvercle de protection de contact mobile (4).
EP19162884.1A 2018-03-16 2019-03-14 Mécanisme de protection de contact de circuit de disjoncteur Active EP3540755B1 (fr)

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CN118116777B (zh) * 2024-03-05 2024-09-03 浙江东亚电子有限公司 一种紧凑型高密度智能断路器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140048513A1 (en) * 2012-08-14 2014-02-20 Fuji Electric Fa Components & Systems Co., Ltd. Circuit breaker

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Publication number Priority date Publication date Assignee Title
DE3412273A1 (de) * 1984-04-02 1985-10-10 Heinrich Kopp Gmbh & Co Kg, 8756 Kahl Leitungsschutzschalter mit differenzstromausloesung
US6724284B2 (en) * 2001-02-02 2004-04-20 Eaton Corporation Circuit breaker
WO2002080328A1 (fr) * 2001-03-30 2002-10-10 Pdl Holdings Limited Dispositif de circuit electrique a configuration compacte de bornes
CN206471297U (zh) * 2017-02-27 2017-09-05 哥伦电气有限公司 一种小型断路器
CN107610987B (zh) * 2017-09-22 2020-04-24 嘉兴市加控电气设备制造有限公司 一种小型断路器

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Publication number Priority date Publication date Assignee Title
US20140048513A1 (en) * 2012-08-14 2014-02-20 Fuji Electric Fa Components & Systems Co., Ltd. Circuit breaker

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