WO2024067301A1 - Tripping mechanism of circuit breaker, and circuit breaker - Google Patents

Tripping mechanism of circuit breaker, and circuit breaker Download PDF

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Publication number
WO2024067301A1
WO2024067301A1 PCT/CN2023/120109 CN2023120109W WO2024067301A1 WO 2024067301 A1 WO2024067301 A1 WO 2024067301A1 CN 2023120109 W CN2023120109 W CN 2023120109W WO 2024067301 A1 WO2024067301 A1 WO 2024067301A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
lock
buckle
tripping
lever arm
Prior art date
Application number
PCT/CN2023/120109
Other languages
French (fr)
Chinese (zh)
Inventor
陈闽
贾永帅
张协利
周燕海
赖森林
孙冠上
Original Assignee
厦门宏发汽车电子有限公司
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
Priority claimed from CN202211200068.5A external-priority patent/CN115513014A/en
Priority claimed from CN202211200055.8A external-priority patent/CN115472471A/en
Application filed by 厦门宏发汽车电子有限公司 filed Critical 厦门宏发汽车电子有限公司
Publication of WO2024067301A1 publication Critical patent/WO2024067301A1/en

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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
    • 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
    • H01H71/24—Electromagnetic mechanisms

Definitions

  • the present disclosure relates to the technical field of circuit breaker manufacturing, and in particular to an improvement of a tripping mechanism and a circuit breaker having the tripping mechanism.
  • the tripping mechanism is one of the common mechanisms in the circuit breaker. Its function is that when an abnormal situation occurs in the circuit and needs to be quickly disconnected, after the tripping mechanism is unhooked, the fast action of the tripping buckle drives the moving contact to quickly open the gate.
  • the existing tripping mechanism generally only includes a tripping buckle and a lock buckle. The tripping buckle and the moving contact are linked and overlapped with the lock buckle, so that the tripping buckle and the lock buckle are in a locked state.
  • the lock buckle cooperates with the tripping device. When the tripping device acts on the lock buckle, the lock buckle acts, so that the locked state of the tripping buckle and the lock buckle is released, causing the fast action of the tripping buckle.
  • the size of the tripping buckle is generally small (shorter), resulting in a shorter force arm for its force application.
  • the torque of the tripping buckle remains unchanged, the shorter the force arm, the greater the force of the tripping buckle on the lock buckle.
  • the locking force of the lock buckle to lock the tripping buckle is also relatively large, which leads to a greater unlocking force required to unlock the lock buckle.
  • the push rod of the commonly used release device in the related technology (such as electromagnetic release device) has a small thrust and push range, so the unlocking force required for the lock is too large, and the thrust of the release device may not be able to push the release mechanism to unlock.
  • a tripping mechanism of a circuit breaker with an optimized structure and a circuit breaker having the tripping mechanism are proposed.
  • a tripping mechanism for a circuit breaker comprises a rotatable tripping catch, a re-catch and a lock catch, wherein the re-catch is a labor-saving lever structure, comprising a first lever arm and a second lever arm, the tripping catch is provided with a first overlapping portion, and the first lever arm is correspondingly provided with a first crimping portion, the second lever arm is provided with a second overlapping portion, and the lock catch is correspondingly provided with a second crimping portion, the relative positions of the tripping catch, the re-catch and the lock catch are configured such that through relative rotation between each other, the second crimping portion can be press-fitted to the second overlapping portion while the first crimping portion is press-fitted to the first overlapping portion, thereby limiting the rotation of the tripping catch, wherein the first rotation force arm of the first crimping portion is smaller than the second rotation force arm of the second overlapping portion.
  • first lever arm and the second lever arm rotate together around the rotation axis of the re-clamp, and the first lever arm and the second lever arm protrude in the same direction, and the protrusion heights of the first lever arm and the second lever arm are different, or
  • the first lever arm and the second lever arm have an included angle, which is an acute angle, so that the two are in a V shape.
  • the rotation centers of the re-snap and the lock are respectively arranged on both sides of the rotation center of the jump snap, so that the second lever arm extends from one side of the rotation center of the jump snap to the other side.
  • the jump buckle is a swing arm structure
  • the first overlapping portion is arranged at the end of the jump buckle
  • the second overlapping portion is arranged at the end of the second lever arm.
  • the lock buckle is provided with a boss abutting against the end of the second lever arm, and the overlap amount of the second overlapping portion and the second crimping portion is controlled by changing the protruding height of the boss.
  • the disclosed embodiment also provides a circuit breaker, comprising an operating mechanism and a contact assembly consisting of a moving contact and a stationary contact, wherein the moving contact and the operating mechanism are linked together and have a movable stroke relative to the stationary contact for realizing the conduction or disconnection of the circuit breaker, and further comprising a tripping mechanism for realizing the tripping and opening of the circuit breaker and a tripper for triggering the tripping mechanism to trip, wherein the tripping mechanism is the tripping mechanism of the circuit breaker mentioned above, the tripper is linked together with the operating mechanism, and the tripper is transmission-connected to the lock.
  • the operating mechanism and the contact assembly are roughly arranged up and down, and the tripping mechanism of the circuit breaker is roughly arranged front-to-back, thereby forming a cross-shaped cross layout.
  • the re-buckle is hinged on the rear side of the jump buckle
  • the lock buckle is hinged on the front side of the jump buckle, so that the second lever arm extends from the rear to the front.
  • the circuit breaker also includes a moving contact support, the moving contact is mounted on the moving contact support and moves with the moving contact support, the re-catch is hinged on the rear side of the trip catch, and the lock catch is hinged on the oblique upper side of the front side of the trip catch so that the second lever arm extends obliquely upward, and the lock catch and the moving contact support form an upper and lower arrangement.
  • the operating mechanism includes a handle rotatably disposed above the re-hook, and also includes a disc-shaped connecting seat for mounting the handle, and the re-hook is an arc-shaped extension structure matching the shape of the disc-shaped connecting seat.
  • the first crimping portion and the second overlapping portion of the re-lock are staggered in the left-right direction
  • the jump buckle matched with the first crimping portion and the lock buckle matched with the second overlapping portion are also staggered in the left-right direction and are not in a plane in the left-right direction.
  • the operating mechanism includes a rotatable handle, and the handle has two parking positions of opening and closing respectively.
  • the handle is linked to the trip latch and the moving contact at the same time through a connecting rod mechanism.
  • the connecting rod mechanism transmits force to the trip latch so that when the handle swings from the opening position to the closing position, the first overlapping portion of the trip latch is pulled against the first crimping portion, and the second overlapping portion is indirectly pushed against the second crimping portion, thereby locking the trip mechanism.
  • the handle, re-latch and lock are respectively configured with a first elastic member, a second elastic member and a third elastic member.
  • the first elastic member is used to provide an elastic force for the handle to rotate in the direction of opening the switch, and indirectly provide an elastic force for the re-latch to return to its original position after being unfastened.
  • the second elastic member is used to provide an elastic force for the re-latch to return to its original position after being unfastened.
  • the third elastic member is used to provide an elastic force for the lock to return to its original position after being unfastened.
  • the second overlap portion is arranged above the rotation axis of the lock, and a clearance recess is arranged below the second crimping portion to provide travel space for the re-locking and resetting.
  • the circuit breaker further includes a first stop portion, which is fixedly disposed on a reset path of the tripping and re-tripping to limit the tripping and re-tripping.
  • the trip buckle can be reset before the re-buckle, and the re-buckle can be reset before the lock buckle.
  • one end of the re-fastening movement direction of the buckle is provided with a first limiting surface
  • the jump buckle is provided with a The limiting surface abuts against the first stop portion to prevent the re-buckle from resetting
  • a first abutment terminal end is provided on the first limiting surface along the resetting direction of the jump buckle, so that the first stop portion is separated from the first limiting surface after passing over the first abutment terminal end, thereby releasing the resetting stroke of the re-buckle, so that the jump buckle can be reset before the re-buckle.
  • a second limiting surface is provided at one end of the lock buckle's resetting movement direction, and the re-snap is provided with a second stop portion that can abut against the second limiting surface to prevent the lock buckle from resetting, and a second abutment terminal end is provided on the second limiting surface along the resetting direction of the re-snap, so that the second stop portion disengages from the second limiting surface after passing over the second abutment terminal end, thereby releasing the lock buckle's resetting stroke, so that the re-snap can be reset before the lock buckle.
  • a re-lock is added to the tripping mechanism, so that in the tripping mechanism, the lock is first locked and then locked, and then locked and jumped.
  • the re-lock is a labor-saving lever structure. The force applied to the lock by the jumper through the labor-saving lever structure is smaller, so the tripping force of the electromagnetic releaser required to unlock the lock is also reduced, ensuring that the contacts can be automatically disconnected when a leakage fault occurs.
  • a circuit breaker comprising a tripping mechanism for realizing tripping and opening, the tripping mechanism comprising a tripping catch, the circuit breaker further comprising an external accessory linkage mechanism, the external accessory linkage mechanism comprising a first linkage member and a second linkage member, the first linkage member and the tripping catch being coaxially connected and being able to be linked, the second linkage member being movably arranged on one side of the first linkage member and being able to be pushed by the first linkage member when the tripping catch is unfastened, the second linkage member being provided with a coupling connection portion, the coupling connection portion being used to be coupled and connected with an external accessory, so that one of the second linkage member and the external accessory can drive the other to produce an action through the cooperation of the coupling connection.
  • the trip mechanism also includes a lock for locking or unlocking the tripper
  • the circuit breaker also includes a third linkage, which is movably arranged on one side of the second linkage and can be pushed by the second linkage to produce a movement
  • the lock is provided with a toggle portion extending to the side of the third linkage away from the second linkage, so that when the second linkage pushes the third linkage, the toggle portion can be further toggled to unlock the lock on the tripper, so as to cause a trip.
  • the external accessory includes a coupling fitting portion coupled to the coupling connection portion, and the external accessory is a passively triggered accessory that triggers the coupling fitting portion by pushing the second linkage portion through the first linkage portion, or is an actively driven accessory that actively drives the second linkage portion through the coupling fitting portion.
  • one of the coupling connection portion and the coupling mating portion is a socket, and the other is a rod inserted into the socket.
  • the coupling connection portion is a socket
  • the coupling fitting portion is an insertion rod inserted into the socket
  • the hole diameter of the socket is larger than the rod diameter of the insertion rod
  • opposite sides of the second linkage member and the third linkage member are respectively provided with a first protruding portion and a second protruding portion that protrude toward each other.
  • the circuit breaker also includes a moving contact support for driving the moving contact
  • the third linkage is a swing arm structure
  • the first end of the third linkage can be rotatably connected to the moving contact support
  • the second end of the third linkage is pressed against a fixed contact point in a direction away from the toggle portion under the action of an elastic member.
  • the relative positions of the second linkage member, the third linkage member and the moving contact support member satisfy that when the switch is opened, the moving contact support member can drive the first end of the third linkage member to deflect in a direction away from the second linkage member to escape from the travel range of the second linkage member.
  • the second linkage member and the third linkage member are each provided with a first protrusion on opposite sides thereof that protrudes toward each other.
  • the first protruding portion and the second protruding portion have a pointed shape with a gradually contracted front end, so that when the moving contact support is opened, the second protruding portion can quickly escape from the travel range of the first protruding portion.
  • the circuit breaker further comprises an indicator for indicating the state of the circuit breaker, wherein the indicator is a lever structure with one end rotatably connected to the moving contact support, and the fixed contact point is a rotating shaft of the indicator.
  • the second linkage member is a rotatable swing arm
  • a limit column is fixedly provided on the side of the second linkage member toward the movement direction of the first linkage member to limit the extreme position of the second linkage member swinging toward the direction close to the first linkage member
  • the circuit breaker also includes a mounting base, the mounting base includes a first side plate and a second side plate that are relatively assembled and connected, the tripping mechanism is arranged between the first side plate and the second side plate, and the external accessory linkage mechanism is installed on the outer side of the first side plate, so that the external accessory linkage mechanism and the tripping mechanism are at different installation levels.
  • the present disclosure further provides a combined switching device, including the circuit breaker described in any of the above-mentioned embodiments and an external accessory coupled to the circuit breaker.
  • the present disclosure has the following beneficial effects: by setting an external accessory linkage mechanism, the circuit breaker can be modularly connected to external accessories, and a set of external accessory linkage mechanisms in the embodiment of the present disclosure can be equipped with a variety of different external accessories, which greatly improves the flexibility of installing external accessories on the circuit breaker.
  • FIG. 1 is an overall schematic diagram of a circuit breaker in some embodiments of the present disclosure.
  • FIG. 2 is a structural exploded view of a circuit breaker in some embodiments of the present disclosure.
  • FIG. 3 is a three-dimensional schematic diagram of a circuit breaker in some embodiments of the present disclosure (with the upper cover hidden).
  • FIG. 4 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (closed state).
  • FIG. 5 is a structural exploded view of an operation linkage component in some embodiments of the present disclosure.
  • FIG. 6 is a perspective schematic diagram of a first side panel in some embodiments of the present disclosure.
  • FIG. 7 is a perspective schematic diagram of the second side panel in some embodiments of the present disclosure (angle one).
  • FIG. 8 is a perspective schematic diagram of a handle in some embodiments of the present disclosure.
  • FIG. 9 is a schematic diagram of a second connecting rod in some embodiments of the present disclosure.
  • FIG. 10 is a schematic diagram of a third connecting rod in some embodiments of the present disclosure.
  • FIG. 11 is a schematic diagram of a moving contact support in some embodiments of the present disclosure.
  • FIG. 12 is a three-dimensional schematic diagram of a jump button in some embodiments of the present disclosure.
  • FIG. 13 is a three-dimensional schematic diagram of a lock in some embodiments of the present disclosure (angle one).
  • FIG. 14 is a three-dimensional schematic diagram of a lock in some embodiments of the present disclosure (angle two).
  • FIG. 15 is a three-dimensional schematic diagram of buckling in some embodiments of the present disclosure.
  • FIG. 16 is a schematic diagram of the cooperation between re-fastening and locking in some embodiments of the present disclosure.
  • 17 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (manual tripping state).
  • FIG. 18 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (tripped and opened state).
  • FIG. 19 is a schematic diagram of the cooperation among the electromagnetic release, linkage and lock in some embodiments of the present disclosure.
  • FIG. 20 is a three-dimensional schematic diagram of a linkage member in some embodiments of the present disclosure.
  • Figure 21 is a three-dimensional schematic diagram of the second side panel in some embodiments of the present disclosure (angle two).
  • FIG. 22 is a schematic diagram of the cooperation between the first limiting surface of the re-fastening and the first stopping portion of the jump fastening in some embodiments of the present disclosure.
  • FIG. 23 is a schematic diagram of the cooperation between the second limiting surface of the lock and the second stop portion of the re-lock in some embodiments of the present disclosure.
  • Figure 24 is a schematic diagram of some embodiments of the present disclosure in which the first crimping portion, the jump buckle, the second overlapping portion, and the lock buckle are staggered in the left and right directions.
  • FIG. 25 is a schematic top view of a re-fastening in some embodiments of the present disclosure.
  • FIG. 26 is an overall schematic diagram of a circuit breaker in some embodiments of the present disclosure.
  • FIG. 27 is an exploded view of a circuit breaker in some embodiments of the present disclosure.
  • FIG. 28 is a three-dimensional schematic diagram of a circuit breaker in some embodiments of the present disclosure (with the upper cover hidden).
  • FIG. 29 is a schematic diagram of a conductive system, an operating mechanism, and a tripping mechanism in some embodiments of the present disclosure.
  • FIG. 30 is a structural exploded view of an operation linkage assembly in some embodiments of the present disclosure.
  • FIG. 31 is a schematic diagram of an external accessory linkage mechanism assembly on a circuit breaker in some embodiments of the present disclosure (closed state).
  • Figure 32 is a three-dimensional schematic diagram of the first side panel in some embodiments of the present disclosure.
  • FIG. 33 is a schematic diagram of a first linkage member in some embodiments of the present disclosure.
  • FIG. 34 is a schematic diagram of a second linkage member in some embodiments of the present disclosure.
  • FIG. 35 is a schematic diagram of a third linkage member in some embodiments of the present disclosure.
  • FIG. 36 is a schematic diagram of an indicator in some embodiments of the present disclosure.
  • FIG. 37 is a schematic diagram showing a coupling connection between an external accessory and a socket of a second linkage member through an insertion rod in some embodiments of the present disclosure.
  • FIG. 38 is a schematic diagram of a first linkage member pushing a second linkage member to trigger a passively triggered external accessory in some embodiments of the present disclosure.
  • 39 is a schematic diagram of actively driving an external accessory to push a second linkage member and then a third linkage member to trigger tripping and opening of the switch in some embodiments of the present disclosure.
  • FIG. 40 is a schematic diagram of an external accessory linkage mechanism assembly on a circuit breaker in some embodiments of the present disclosure (open state).
  • an embodiment of the present disclosure provides a circuit breaker, more specifically, a circuit breaker that operates according to residual current, including an outer shell 100 and a conductive system 3.
  • the outer shell 100 is a circuit breaker shell formed by assembling an upper cover 1001 and a base 1002 and fixing them together; the conductive system 3 is arranged inside the outer shell 100.
  • the conductive system 3 includes a contact assembly consisting of a moving contact 301 and a stationary contact 302, and also includes a wiring terminal 300 and a conductive copper busbar, etc.
  • the inner cavity of the outer shell 100 is also provided with a zero-sequence current transformer 1003 for measuring residual current, an arc-extinguishing grid 1004 for arc extinguishing, and an electromagnetic release 4 for realizing tripping and opening.
  • the outer shell 100 is also equipped with a test button 41 for realizing the leakage function detection of the circuit breaker.
  • the height direction of the circuit breaker i.e., the Z1 and Z2 directions in FIG. 2 are respectively the up and down directions;
  • the width direction of the circuit breaker i.e., the X1 and X2 directions in FIG. 2 are respectively the left and right directions;
  • the length direction of the circuit breaker i.e., the Y1 and Y2 directions in FIG. 2 are respectively the forward and backward directions.
  • the circuit breaker also includes an operating linkage assembly 2.
  • the operating linkage assembly 2 includes a first side plate 22 and a second side plate 23 that are opposite to each other in the left-right direction.
  • the first side plate 22 and the second side plate 23 are relatively assembled and connected to form a mounting base for the operating linkage assembly 2.
  • the operating linkage assembly 2 also includes a handle 11, a first connecting rod 13, a second connecting rod 14, a third connecting rod 15, a tripping catch 17, a re-catch 18, and a lock catch 20 that are arranged between the first side plate 22 and the second side plate 23.
  • the handle 11, the first connecting rod 13, the second connecting rod 14, and the third connecting rod 15 constitute an operating mechanism of the circuit breaker, which is used to control the opening and closing movement of the moving contact 301 by manually pulling the handle 11; the tripping catch 17, the re-catch 18, and the lock catch 20 constitute a tripping mechanism of the circuit breaker, which is used to cooperate with the electromagnetic release 4 to realize the tripping and opening of the circuit breaker.
  • the handle 11 is rotatably connected to the first side plate 22, referring to Figures 6 and 8.
  • the handle 11 is specifically rotatably plugged into the first socket 2201 of the first side plate 22 by its handle shaft 1101.
  • One end of the first connecting rod 13 is hinged to the handle 11, and the other end is hinged to the second connecting rod 14 and the third connecting rod 15 at the same hinge point.
  • the first connecting rod 13 is a U-shaped rod
  • one end of the second connecting rod 14 is provided with a second socket 1401, and the other end is provided with a third socket 1402
  • one end of the third connecting rod 15 is provided with a fourth socket 1501
  • the other end is provided with a fifth socket 1502
  • the second socket 1401 and the fourth socket 1501 are overlapped
  • one end of the first connecting rod 13 is rotatably plugged into the sixth socket 1103 on the handle 11, and the other end is rotatably plugged into the second socket 1401 and the fourth socket 1501 at the same time.
  • a moving contact support 16 is hinged to the third connecting rod 15. Specifically, referring to FIGS. 4, 10 and 11, the fifth jack 1502 of the third connecting rod 15 is hinged to the seventh jack 1601 of the moving contact support 16 through a pin. As shown in FIG. 11, the moving contact support 16 is also hinged to the outer shell 100 through the boss 1602 provided thereon.
  • the moving contact 301 is provided on the moving contact support 16 and moves with the movement of the moving contact support 16.
  • the moving contact 301 can be fixed or hinged to the moving contact support 16.
  • the moving contact 301 is hinged to the moving contact support 16.
  • One end of the moving contact 301 is limited at the limiting position of the moving contact shaft 16 by an elastic member. During the overtravel movement of the moving contact 30, when the other end of the moving contact 301 is limited by the static contact 302, one end of the moving contact 301 leaves the limiting position of the moving contact shaft 16 under the action of the elastic member.
  • the jump buckle 17 and the lock buckle 20 are rotatably connected to the first side plate 22, and the re-buckle 18 is rotatably connected to the second side plate 23.
  • the jump buckle 17 is hinged with its eighth insertion hole 1702 and the ninth insertion hole 2203 provided on the first side plate 22 through a pin;
  • the re-buckle 18 is rotatably plugged with its tenth insertion hole 1802 and the re-buckle shaft 2301 provided on the second side plate 23, and the lock buckle 20 is rotatably plugged with its lock buckle shaft 2002 provided in the eleventh insertion hole 2204 provided on the first side plate 22.
  • the jumper 17 is further provided with a twelfth insertion hole 1701 in the middle section of its length.
  • the third insertion hole 1402 of the second connecting rod 14 is hinged to the twelfth insertion hole 1701 through a pin.
  • some of the components of the above-mentioned operating linkage assembly 2 are rotatably connected to the first side plate 22 (such as the jump buckle 17), and some are rotatably connected to the second side plate 23 (such as the re-buckle 18), but it is obvious that in other embodiments, these components can be arbitrarily changed to be rotatably connected to the first side plate 22 and/or the second side plate 23, and there is no technical obstacle for those skilled in the art.
  • the first side plate 22 and the second side plate 23 are only a specific embodiment. In other embodiments, it is sufficient to provide a mounting base so that these components (such as the jump buckle 17 and the re-buckle 18, etc.) can be rotatably set on the mounting base.
  • This mounting base is not necessarily It must be the first side plate 22 and the second side plate 23 of the specific structure of this embodiment, and it can also be a mounting plate fixedly arranged in the outer shell 100, or even the inner wall of the outer shell 100.
  • the handle 11 and the tripping mechanism i.e., the tripping catch 17, the re-catch 18 and the lock catch 20
  • the handle 11 and the tripping mechanism are all rotatably arranged; one end of the first connecting rod 13 is hinged to the handle 11, and the other end is hinged to the second connecting rod 14 and the third connecting rod 15 at the same hinge point; the second connecting rod 14 is also hinged to the tripping catch 17; the third connecting rod 15 is also hinged to the moving contact support 16; the moving contact 301 is arranged on the moving contact support 16, and moves with the movement of the moving contact support 16.
  • the jumper 17 is provided with a first lap joint 1703, and correspondingly, the re-lock 18 is provided with a first crimping portion 1801; the re-lock 18 is also provided with a second lap joint 1803, and correspondingly, the lock 20 is provided with a second crimping portion 2001.
  • the relative positions of the jumper 17, the re-lock 18 and the lock 20 are configured such that, through relative rotation between each other, the second crimping portion 2001 can be pressed and fitted with the second lap joint 1803, while the first crimping portion 1801 can be pressed and fitted with the first lap joint 1703, thereby limiting the rotation of the jumper 17.
  • the lock buckle 20 is pressed downwardly on the second lap portion 1803 of the re-lock 18 with its second crimping portion 2001, and at the same time, the re-lock 18 is pressed downwardly on the first lap portion 1703 of the jump buckle 17 with its first crimping portion 1801. That is, at this time, the jump buckle 17 is limited and locked so that it cannot swing upward.
  • the handle 11 is provided with a first elastic member 1006 (i.e., a handle spring). It is understood that when the lock catch 20 is locked and the circuit breaker is switched from the manual opening state ( FIG17 ) to the manual closing state ( FIG4 ) by the swing of the handle 11 , the handle spring stores energy, and the handle 11 gives the tripping catch 17 an upward swinging force (pulling force) through the first connecting rod 13 and the second connecting rod 14 .
  • a first elastic member 1006 i.e., a handle spring
  • the tripping catch 17 cannot swing upward, that is, in the closing state, the tripping catch 17 is in a locked state with a force balance with the re-clip 18 and the lock catch 20 . Since the tripping catch 17 is locked (the tripping catch 17 will not rotate), when the circuit breaker is manually opened or closed, the second connecting rod 14 will rotate with the hinge point A between it and the tripping catch 17 as a fulcrum, thereby driving the third connecting rod 15 , the moving contact support 16 and the moving contact 301 to move. When the lock catch 20 is unlocked, this force balance state will be broken, thereby causing the tripping and opening.
  • FIG4 when the lock catch 20 is driven by the electromagnetic release 4 and the second crimping part 2001 is separated from the second lap part 1803 of the re-clip 18 (the second crimping part 2001 rotates clockwise in the specific view state of FIG4 ), the trip catch 17 will push the re-clip 18 upward to swing upward until the first crimping part 1801 of the re-clip 18 cannot suppress the first lap part 1703 of the trip catch 17, then the trip catch 17 is unlocked (unfastened), and the trip catch 17 quickly swings clockwise (in the specific view state of FIG4 , the trip catch 17 rotates around the hinge point B between the trip catch 17 and the mounting base), driving the second connecting rod 14 to rotate with the hinge point B between the trip catch 17 and the mounting base as the rotation axis, and then driving the moving contact 301 to trip and open the gate, and quickly realize the disconnection work.
  • FIG18 shows the approximate state of the tripping mechanism at the moment of tripping in the tripping and opening stage (the final state is also affected by
  • the lock 20 can act directly on the tripping latch 17, that is, the tripping latch 17 is locked by the lock 20 alone.
  • the lock 20 is hinged at the rear side of the tripping latch 17 (that is, roughly hinged at the hinge position of the re-clip 18 in this embodiment). Due to the limitation of the internal space of the circuit breaker, the size of the tripping latch 17 is generally small (shorter), resulting in a shorter force arm for its force application.
  • the torque of the tripping latch 17 remains unchanged, the shorter the force arm, the greater the force of the tripping latch 17 acting on the lock 20.
  • the locking force of the lock 20 to lock the tripping latch 17 is also relatively large, which leads to a greater unlocking force required to unlock the lock 20.
  • the thrust and pushing range of commonly used electromagnetic releases are relatively small, the unlocking force required for the lock 20 is too large, and the thrust of the electromagnetic release 4 may not be able to push the product to unlock.
  • a re-buckle 18 is added, and the lock buckle 20 first locks the re-buckle 18, and the re-buckle 18 then locks the jump buckle 17.
  • the jump buckle 17 first applies force to the re-buckle 18, and the re-buckle 18 then applies force to the lock buckle 20.
  • the re-lock 18 is a force-saving lever structure, as shown in Figure 15, the re-lock 18 includes a first lever arm 181 and a second lever arm 182, wherein the first crimping portion 1801 is arranged on the first lever arm 181, and the second lap portion 1803 is arranged on the second lever arm 182, and the first turning force arm L1 of the first crimping portion 1801 is smaller than the second turning force arm L2 of the second lap portion 1803, as shown in Figure 4, wherein the first turning force arm L1 is the distance between the point of application of the force of the first lap portion 1703 of the jump lock 17 applied to the first crimping portion 1801 of the first lever arm 181 of the re-lock 18 and the center point of the re-lock shaft 2301, and the second turning force arm L2 is the distance between the point of application of the force of the second crimping portion 2001 of the lock buckle 20 applied to the second lap portion 1803 of the second lever wall 182 of the re-lock and the center point of the
  • the jumper 17 is a swing arm structure, as shown in FIG. 12 and FIG. 15 , in this embodiment, the first overlap portion 1703 and the second overlap portion 1803 are overlap surfaces (or overlap edges) respectively arranged at the ends of the jumper 17 and the second lever arm 182. Once the first overlap portion 1703 and the second overlap portion 1803 are unhooked, the jumper 17 can be quickly unhooked and jumped up, thereby improving the unhooking response speed.
  • the first crimping portion 1801 and the second crimping portion 2001 are corner structures formed by the intersection of two planes. Specifically, as shown in FIG. 15 , the two planes of the first crimping portion 1801 are respectively the first plane 18011 and the second plane 18012. As shown in FIG.
  • the two planes of the second crimping portion 2001 are respectively the third plane 20011 and the fourth plane 20012. Therefore, when the lock buckle 20 rotates a certain angle, once the second overlap portion 1803 slides out of the corner-shaped second crimping portion 2001, it can be quickly separated from the second crimping portion 2001. When the lock buckle 18 rotates a certain angle, once the first overlap portion 1703 slides out of the corner-shaped first crimping portion 1801, it can be quickly separated from the first crimping portion 1801.
  • the slope of the first plane 18011 located above the two planes of the first crimping portion 1801 is larger, so that when the jump buckle 17 is unfastened and reset, the first plane 18011 with a larger slope can serve as a guide surface to guide the jump buckle 17 to reset reliably.
  • the same principle design is also adopted for the two planes constituting the second crimping portion 2001.
  • the first length d1 of the first lever arm 181 is smaller than the second length d2 of the second lever arm 182, and the second lap joint 1803 is arranged at the end of the second lever arm 182, so that the first turning force arm L1 of the first crimping portion 1801 is smaller than the second turning force arm L2 of the second lap joint 1803 (as shown in Figure 4).
  • the first lever arm 181 and the second lever arm 182 rotate together around the rotation axis R1 of the re-lock 18, and the first lever arm 181 and the second lever arm 182 protrude in the same direction (for example, the direction indicated by the solid arrow shown in FIG.
  • the protrusion heights of the first lever arm 181 and the second lever arm 182 are different.
  • Such a configuration can minimize the occupied space and length of the re-lock 18, save installation space, and avoid interference with other components inside the circuit breaker.
  • the jump buckle 17 matched with the first crimping portion 1801 and the lock buckle 20 matched with the second lap portion 1803 are staggered in the left and right directions (refer to FIG. 24, that is, in the directions of X1 and X2), thereby utilizing the space in the left and right directions of the circuit breaker to avoid the movement of the jump buckle 17 and the lock buckle 20.
  • the first lever arm 181 and the second lever arm 182 can have a small acute angle ⁇ between them, and the two are in a "V" shape, as shown in FIG. 25. Although such a setting can effectively reduce the space occupied by the re-clamp 18, it is still possible to interfere with the components below the re-clamp 18, such as the contact assembly, the arc extinguishing grid, etc.
  • the first lever arm 181 and the second lever arm 182 in other embodiments can also be two colinear lever arms extending in different directions (that is, the first lever arm 181 and the second lever arm 182 are located on both sides of the rotation axis R1 and the two are colinear), or at an obtuse angle.
  • the operating mechanism and the contact assembly are generally arranged up and down, and the tripping mechanism is generally arranged front to back, thereby forming a "cross"
  • the cross-shaped layout makes full use of the length and height space of the circuit breaker.
  • the restraining end of the re-lock 18 in this embodiment is hinged on the second side plate 23 on the rear side of the jump lock 17, and the lock 20 is hinged on the first side plate 22 on the front side of the jump lock 17.
  • the re-lock 18 extends from the restraining end to the free end from the back to the front, so as to make full use of the length space of the circuit breaker in the front and rear directions, so that the second turning force arm L2 of the second overlap portion 1803 is larger. Furthermore, in the present embodiment, the restraining end of the re-lock 18 is hinged on the second side plate 23 directly behind the jump buckle 17, and the lock buckle 20 is hinged on the first side plate 22 obliquely above the front side of the jump buckle 17. Therefore, the re-lock 18 still extends obliquely. Such a configuration further increases the second rotating force arm L2 of the second lap joint 1803.
  • hingedly connecting the lock buckle 20 to the first side plate 22 obliquely above the front side of the jump buckle 17 can also avoid interference between the lock buckle 20 and the moving contact support 16 during operation.
  • the lock buckle 20 and the moving contact support 16 are arranged one above the other, thereby improving the compactness of the structure.
  • the handle 11 and the buckle 18 are rotatably connected to the mounting base, and a disc-shaped connecting seat 2309 for mounting the handle 11 is provided on the mounting base.
  • the buckle 18 is a swing arm structure with an arc-shaped extension that matches the disc-shaped connecting seat 2309, so as to make way for the disc-shaped connecting seat 2309. Such an arrangement can improve the compactness of the internal structure of the circuit breaker.
  • a boss 2006 is fixedly provided on the lock buckle 20, and the boss 2006 is used to abut against the free end (i.e., the end) of the re-snap 18, so as to control the overlap amount between the second overlap portion 1803 and the second crimping portion 2001. It can be understood that the larger the overlap amount, the larger the disengagement stroke required for the lock buckle 20 to disengage from the re-snap 18. Therefore, this embodiment can control the disengagement stroke of the lock buckle 20 by changing the protruding height of the boss 2006, which is convenient for adjustment to suit actual product specifications.
  • the electromagnetic release 4 drives the lock 20 to unlock through a linkage 24.
  • the electromagnetic release 4 and the linkage 24 are both arranged on the side of the second side plate 23 away from the release mechanism.
  • the linkage 24 is a seesaw structure.
  • the linkage 24 can be rotatably plugged into the rotating shaft 2303 of the second side plate 23 through the thirteenth plug hole 2401 provided thereon.
  • the linkage 24 is provided with a first toggle portion 2403 and a second toggle portion 2402 extending radially outward, wherein the first toggle portion 2403 is arranged close to the push rod (not shown in the figure) of the electromagnetic release 4.
  • the lock buckle 20 is provided with a boss 2005, which extends through the second side plate 23 to the vicinity of the second toggle portion 2402.
  • the push rod of the electromagnetic release 4 When the push rod of the electromagnetic release 4 is actuated, it pushes the first toggle portion 2403 to cause the linkage member 24 to rotate, and then the second toggle portion 2402 pushes the boss 2005 to cause the lock buckle 20 to rotate and unlock.
  • the linkage member 24 is also provided with a reset member, which is used to reset the linkage member 24 and the push rod of the electromagnetic release 4 after the circuit breaker is tripped and opened.
  • the reset member is a torsion spring 25, which is installed on the linkage member 24.
  • the first arm of the torsion spring 25 abuts against the first abutting surface 2404 provided on the linkage member 24, and the second arm is close to the movable contact support member 16 (specifically, close to the second abutting surface 1603 provided on the movable contact support member, as shown in FIG11 ).
  • the electromagnetic release 4 can also be other types of releasers in other embodiments, such as an overheat releaser and an undervoltage releaser.
  • the handle 11 , the buckle 18 and the lock buckle 20 are respectively configured with a first elastic member 1006 , a second elastic member 1007 and a third elastic member 1008 .
  • One end of the first elastic member 1006 acts on the mounting base (for example, in the present embodiment, it acts on the first side plate 22 or the second side plate 23), and the other end acts on the handle 11 to provide an elastic force for the handle 11 to rotate in the direction of opening the switch;
  • one end of the second elastic member 1007 acts on the mounting base, and the other end acts on the re-buckle 18 to provide an elastic force for the re-buckle 18, and the elastic force is to rotate the re-buckle 18 toward the locking position of the press-buckle locking the jump buckle 17, thereby resetting the re-buckle 18 after the tripping mechanism is unbuttoned and the press-buckle locking of the re-buckle 18 and the jump buckle 17 is released;
  • one end of the third elastic member 1008 acts on the mounting base, and the other end acts on the mounting
  • the first elastic member 1006 provides an elastic force to rotate the handle clockwise
  • the second elastic member 1007 provides an elastic force to rotate the re-buckle 18 clockwise
  • the third elastic member 1008 provides an elastic force to rotate the lock catch 20 counterclockwise (the direction of rotation is indicated by an arrow in Figure 18).
  • the handle 11 rotates to the opening position, and the trip buckle 17 is driven by the force transmission of the first connecting rod 13 and the second connecting rod 14 to swing downward and reset, and then, under the action of the second elastic member 1007 and the third elastic member 1008, the re-buckle 18 and the lock catch 20 are reset respectively.
  • the free end of the re-snap 18 is arranged above the rotation axis of the lock 20 (the axis of the lock shaft 2002), and because the lock 20 is on the reset path of the re-snap 18, a clearance recess 2007 (as shown in FIG.
  • a first stop portion 2306 is arranged below the jumper 17 and the re-snap 18. When the jumper 17 and the re-snap 18 swing downward to reset, they contact the first stop portion 2306 and are limited to a suitable minimum limit position, so as to prevent the two from swinging downward too much and failing to return to the state of press-fitting.
  • the first stop portion 2306 is the bottom wall of the second side plate 23, and in other embodiments, it can also be an additional stop member, such as an independently arranged baffle.
  • the tripping catch 17 will be tilted upward under the transmission action of the handle 11 and abut against the re-catch 18 to form a press-fit fit, and push the re-catch 18 to swing upward and abut against the lock catch 20 to form a press-fit fit, thereby completing a complete resetting action of the tripping mechanism.
  • a second gear portion 2307 is provided above the re-lock 18 (in this embodiment, the second gear portion 2307 is the top wall of the second side plate 23, and in other embodiments, it can also be other gear members) to control the maximum limit position of the upward swing of the re-lock 18 to ensure that the re-lock 18 can be reliably reset.
  • the first elastic member 1006, the second elastic member 1007 and the third elastic member 1008 are all torsion springs. In other embodiments, they can also be other elastic members such as tension springs and compression springs. Only the installation and connection parts need to be adaptively changed to provide potential energy with the same movement effect.
  • the reset of the jump buckle 17, the re-buckle 18 and the lock buckle 20 needs to follow a certain order. It is understandable that if the lock buckle 20 is reset before the re-buckle 18, it will form a stop for the reset of the re-buckle 18; if the re-buckle 18 is reset before the jump buckle 17, it will form a stop for the reset of the jump buckle 17. Therefore, the three need to be reset in the order of "jump buckle 17, re-buckle 18, lock buckle 20".
  • one end of the resetting movement direction of the re-buckle 18 (in this embodiment, the lower end of the re-buckle 18) is provided with a first limiting surface 1806, and the jump buckle 17 is provided with a first stop portion 1705 that can abut against the first limiting surface 1806 to prevent the re-buckle 18 from resetting.
  • the first stop portion 1705 is a convex shaft extending from the jump buckle 17, and the first limiting surface 1806 is a curved surface that matches the movement trajectory of the first stop portion 1705.
  • a first abutment termination end 18061 is provided on the first limiting surface 1806 along the resetting direction of the jump buckle 17, and the first stop portion 1705 passes over it.
  • the first abutment terminal end 18061 is then disengaged from the first limiting surface 1806, thereby further resetting the buckle 18; similarly, a second limiting surface 2008 is provided at one end in the direction of the resetting movement of the lock buckle 20, and the free end of the re-lock 18 serves as a second stop portion that abuts against the second limiting surface 2008 to prevent the lock buckle 20 from resetting.
  • the second limiting surface 2008 is a curved surface that matches the movement trajectory of the second stop portion, and a second abutment terminal end 20081 is provided on the second limiting surface 2008 along the resetting direction of the re-lock 18.
  • the second stop portion passes over the second abutment terminal end 20081 and is disengaged from the second limiting surface 2008, thereby further resetting the lock buckle 20.
  • the circuit breaker also includes a testing mechanism, as shown in FIG19 , which includes a testing button 41, a first testing spring 42, a second testing spring 43, a moving contact spring 44, a shielding cover 45 (a charged body), a connecting spring 46, and a resistor 47.
  • the testing button 41 is mounted on the outer shell 100 and can only move up and down within a certain range.
  • the first testing spring 42 is a torsion spring mounted on the second side plate 23. One torsion arm is overlapped on the test button 41, and the other torsion arm is overlapped on the shielding cover 45.
  • the second test spring 43 is also a torsion spring installed on the second side plate 23, and its two torsion arms are overlapped at different positions on the second side plate 23.
  • the moving contact spring 44 is a torsion spring installed on the moving contact support 16, and one torsion arm is overlapped on the moving contact 301, and the other torsion arm is overlapped on the moving contact support 16 and is located near a torsion arm of the second test spring 43.
  • the moving contact spring 44 moves with the moving contact support 16.
  • the shielding cover 45 is sleeved on the electromagnetic release 4 and installed on the second side plate 23.
  • the connecting spring 46 is installed on the second side plate 23, and one torsion arm is overlapped on the shielding cover 45, and the other torsion arm presses the pin of the resistor 47 onto the shielding cover 45.
  • the resistor 47 is installed between the first side plate 22 and the second side plate 23, and the other pin of the resistor 47 is fixedly connected to the input terminal board.
  • the moving contact spring 44 is in contact with the second test spring 43.
  • pressing the test button 41 can turn on the test circuit and disconnect the circuit breaker; when the circuit breaker is in the disconnected position, the moving contact spring 44 and the second test spring 43 are not electrically connected, and pressing the test button 41 cannot turn on the test circuit, which can protect the circuit from damage.
  • test circuits of this embodiment are all connected by springs, and signal lines are not soldered, which reduces the risk of broken wires and cold soldering; the functions of the parts in the test circuit are integrated: the shielding cover is used to shield the influence of the external magnetic field on the electromagnetic release, and is also used as a conductor in the test circuit.
  • the moving contact spring is used to generate contact pressure and is also used as a conductor in the test circuit, saving the number of parts.
  • circuit breakers with tripping and opening functions a single tripping and opening function is increasingly unable to meet current needs.
  • an alarm device is usually required for the circuit breaker; if the circuit breaker needs to have multiple tripping modes at the same time, other types of trips are required in addition to the trips that come with the circuit breaker.
  • the circuit breaker body in addition to the functions of the circuit breaker body, it is increasingly urgent to have the ability to be modularly improved.
  • the internal installation space of the circuit breaker body is limited, and based on the design concept of miniaturization, there is usually no space left for the installation of other modules. Therefore, circuit breakers that can flexibly connect accessories have become a direction of current circuit breaker structure research.
  • the circuit breakers that can be connected to accessories on the market often have the disadvantages of complex structure, low flexibility, and poor versatility.
  • some embodiments of the present disclosure further provide a circuit breaker, more specifically, a circuit breaker that operates according to residual current, including an outer shell 100a and a conductive system 3a, wherein the outer shell 100a is a circuit breaker shell formed by assembling and fixing an upper cover 1001a and a base 1002a; the conductive system 3a is arranged inside the outer shell 100a, referring to Figure 29, the conductive system 3a includes a wiring terminal 300a, a moving contact 301a, a stationary contact 302a and a conductive copper bus, etc., to form a conductive circuit of the circuit breaker after power is turned on, wherein the moving contact 301a has a movable stroke relative to the stationary contact 302a to realize the contact or separation of the moving contact 301a and the stationary contact 302a, thereby realizing the opening and closing of the circuit breaker.
  • the inner cavity of the outer shell 100a is also provided with a zero-sequence current transformer 1003a for residual current measurement, an arc extinguishing grid 1004a for arc extinguishing treatment, and an electromagnetic release 4a for tripping and opening the circuit breaker.
  • a test button 1005a for realizing leakage function detection of the circuit breaker is also installed on the outer shell 100a.
  • the circuit breaker also includes an operation linkage assembly 2a, referring to Figures 29 and 30, the operation linkage assembly 2a includes a first side plate 22a and a second side plate 23a opposite to each other in the left and right directions, the first side plate 22a and the second side plate 23a are relatively assembled and connected to form a mounting base of the operation linkage assembly 2a, and the operation linkage assembly 2a also includes an operating mechanism, a tripping mechanism and an external accessory linkage mechanism installed on the mounting base, wherein the operating mechanism includes a handle 11a, a first connecting rod 13a, a second connecting rod 14a and a third connecting rod 15a; the tripping mechanism includes a tripping buckle 17a, a re-buckle 18a and a lock buckle 20a; the external accessory linkage mechanism includes a first linkage member 26a, a second linkage member 27a and a third linkage member 29a.
  • the operating mechanism includes a handle 11a, a first connecting rod 13a, a second connecting rod 14a and a
  • the operating mechanism is used to control the opening and closing movement of the moving contact 301a; the tripping mechanism is connected to the operating mechanism and can be linked with the operating mechanism to cooperate with the electromagnetic release 4a to realize the tripping and opening of the circuit breaker.
  • the external accessory linkage mechanism is used for the linkage between the circuit breaker and external accessories (including actively triggered accessories and passively driven accessories).
  • the handle 11a, the jump buckle 17a, the re-buckle 18a and the lock buckle 20a are all rotatably arranged on the mounting base; one end of the first connecting rod 13a is hinged to the handle 11a, and the other end is hinged to the second connecting rod 14a and the third connecting rod 15a at the same hinge point; the second connecting rod 14a It is also hinged on the jumper 17a; the third connecting rod 15a is also hinged on the moving contact support 16a; the moving contact support 16a is also hinged on the outer shell 100a, and the moving contact 301a is arranged on the moving contact support 16a, and moves with the movement of the moving contact support 16a, for example, the moving contact 301a can be fixed or hinged on the moving contact support 16a.
  • the moving contact 301a is hinged on the moving contact support 16a, and one end of the moving contact 301 is limited to the limit position of the moving contact shaft 16 by an elastic member.
  • one end of the moving contact 301 leaves the limit position of the moving contact shaft 16 under the action of the elastic member.
  • the lock buckle 20a is pressed and matched with the re-buckle 18a, and the re-buckle 18a is pressed and matched with the jump buckle 17a to limit the rotation of the jump buckle 17a.
  • the jump buckle 17a is in a locked state with a force balance with the re-buckle 18a and the lock buckle 20a. Since the jump buckle 17a is locked, when the switch is manually opened and closed, the second connecting rod 14a will rotate with the hinge point A between it and the jump buckle 17a as a fulcrum, thereby driving the third connecting rod 15a, the moving contact support 16a and the moving contact 301a to move, and the jump buckle 17a will not rotate.
  • the jumper 17a first applies force to the re-lock 18a, and the re-lock 18a then applies force to the locker 20a. Therefore, the force arm of the jumper 17a exerting force on the locker 20a is indirectly lengthened by the re-lock 18a. Under the premise that the torque of the jumper 17a remains unchanged, the force of the jumper 17a acting on the locker 20a is smaller, and the tripping force of the electromagnetic release 4a required to unlock the locker 20a is also reduced, ensuring that the contacts can be automatically disconnected when a leakage fault occurs.
  • the operating mechanism and the tripping mechanism are both arranged between the first side plate 22a and the second side plate 23a, and the external accessory linkage mechanism is installed on the outer side of the first side plate 22a, so that the external accessory linkage mechanism and the operating mechanism and the tripping mechanism are at different installation levels, thereby improving the utilization rate of the internal space of the circuit breaker and the compactness of the structure.
  • the first side plate 22a separates the external accessory linkage mechanism, so that the external accessory linkage mechanism with more independent functions can interfere less with the operating mechanism and the tripping mechanism.
  • the first linkage member 26a is rotatably arranged on the mounting base and is coaxially linked with the jumper 17a.
  • the first linkage member 26a is a semicircular plate-shaped member, and the first linkage member 26a is hinged on the rotating shaft 2206a provided on the first side plate 22a with its central hole 2601a, and the rotating shaft 2206a is coaxial with the turning point B of the jumper 17a; the first linkage member 26a is also provided with a connecting hole 2602a, and an interlocking shaft passes through the connecting hole 2602a and is inserted into the jumper 17a, so that the jumper 17a and the first linkage member 26a are synchronized through the interlocking shaft.
  • connection methods can also be used to connect the jumper 17a and the first linkage member 26a, for example, the two are fixedly connected to the same rotating shaft.
  • the first linkage member 26a is used to move the second linkage member 27a when the jumper 17a is unfastened, so in other embodiments, the first linkage member 26a can also be a swing arm.
  • the second linkage member 27a is a swing arm rotatably connected to the mounting base, and its rotation center is point C. Specifically, the second linkage member 27a is hinged to the hole 2207a of the first side plate 22a with its rotation axis 2701a, and the free end of the second linkage member 27a is arranged close to the first linkage member 26a and can accept the movement of the first linkage member 26a.
  • One end of the first elastic member 28a acts on the mounting base, and the other end acts on the second linkage member 27a to provide a reset elastic force for the second linkage member 27a to swing toward the direction close to the first linkage member 26a.
  • the first elastic member 28a is a torsion spring.
  • a limit column 33a is fixedly provided on the side of the second linkage member 27a that is close to the movement direction of the first linkage member 26a to limit the extreme position of the second linkage member 27a swinging toward the direction close to the first linkage member 26a.
  • the second linkage member 27a can also be set as an up and down direct-acting structure.
  • the indicator 31a is a lever structure, and a rotating shaft 3101a is provided at the middle of its length, which can be rotatably connected to the hole 2209a of the first side plate 22a.
  • One end of the indicator 31a is hinged to the moving contact support 16a through a U-shaped slot 3102a.
  • the other end of the indicator 31a is driven to deflect to a different position to indicate the state of the circuit breaker.
  • the third linkage 29a is also a swing arm structure, and the first end of the third linkage 29a is hinged to the moving contact support 16a.
  • the first end of the third linkage 29a is provided with a hole 2901a, and the hole 2901a is rotatably connected to a protrusion (not shown) provided on the rotating shaft 16a.
  • the third linkage 29a is provided on one side of the second linkage 27a, and can be pushed by the second linkage 27a to generate an action.
  • the lock buckle 20a is provided with a toggle portion 201a that passes through the second side plate 22a and protrudes to the side of the third linkage 29a away from the second linkage 27a.
  • the second linkage member 27a is provided with a coupling connection portion for coupling and connecting an external accessory.
  • This external accessory refers to a component that is provided outside the circuit breaker body and can produce a joint reaction with the circuit breaker.
  • a passive trigger type accessory such as an auxiliary contact device, an alarm contact device, etc.
  • an active driving type accessory such as an undervoltage release, an overvoltage release, a shunt release, etc.
  • This external accessory is provided with a coupling matching portion, which is coupled and connected with the coupling connection portion of the second linkage member 27a, so that one of the second linkage member 27a and the external accessory can drive the other to produce an action through the cooperation of the coupling matching portion and the coupling connection portion.
  • the coupling connection portion is a socket 2705a provided on the second linkage member 27a
  • the coupling matching portion is a plug 600a inserted into the socket 2705a.
  • the coupling matching portion can also be a socket
  • the coupling connection portion can be a plug inserted into the socket.
  • the hole diameter of the socket 2705a is larger than the rod diameter of the plug rod 600a, so that the socket 2705a can be adapted to plug rods of more sizes and specifications, thereby improving applicability.
  • the external accessory 500a is a passively triggered accessory, such as an alarm contact device
  • the first linkage member 26a moves with the trip 17a, and further pushes the second linkage member 27a to swing.
  • the second linkage member 27a pushes the plug rod 600a to move through the plug-in cooperation of the socket 2705a and the plug rod 600a, thereby triggering the contact closure of the alarm contact device to generate an alarm signal.
  • the external accessory 500a is an actively driven accessory, such as an undervoltage release
  • the plug rod 600a actively moves, and the plug-in cooperation between the plug hole 2705a and the plug rod 600a pushes the second linkage member 27a to move, and the second linkage member 27a further pushes the third linkage member 29a, and the third linkage member 29a toggles the toggle portion 201a of the lock 20a to trip the circuit breaker body.
  • This embodiment sets an external accessory linkage mechanism, so that the circuit breaker can be modularly connected to external accessories, and a set of external accessory linkage mechanisms in this embodiment can be equipped with a variety of different external accessories, which greatly improves the flexibility of installing external accessories on the circuit breaker.
  • a first protruding portion 2704a and a second protruding portion 2904a that protrude toward each other are respectively provided on opposite sides of the second linkage member 27a and the third linkage member 29a.
  • the coupling connection portion and the coupling matching portion may also adopt other coupling connection structures, such as magnetic connection, hinged connection, and detachable fixed connection.
  • the second end 2902a of the third linkage member 29a abuts against the rotating shaft 3101a of the indicator member 31a in a direction away from the toggle portion 201a under the action of the second elastic member 30a, so as to prevent the third linkage member 29a from accidentally touching the lock buckle 20a.
  • the second end 2902a of the third linkage member 29a may not abut against the rotating shaft 3101a, as long as a fixed contact point is provided for the second end of the third linkage member 29a to abut against, for example, the fixed contact point may be extended and protruded from the second side plate 22a.
  • the first end of the third linkage member 29a is hinged to the moving contact support member 16a.
  • the second end 2902a of the third linkage member 29a abuts against the fixed contact point, as shown in Figure 40, in this embodiment, when the moving contact support member 16a rotates to the opening position, it can drive the first end of the third linkage member 29a to deflect in a direction away from the second linkage member 27a to escape from the travel range of the second linkage member 27a.
  • the second linkage member 27a cannot contact the third linkage member 29a no matter how it moves, so as to ensure that the circuit breaker can be closed smoothly (in production During the closing process of the product, if the plug rod 600a of the external accessory is stationary, the second linkage member 27a is stationary at the limit column 33a, and the third linkage member 29a moves with the moving contact support 16a to a position close to the second linkage member 27a.
  • the plug rod 600a pushes the second linkage member 27a, and then the second linkage member 27a pushes the third linkage member 29a to push the lock to unlock, and the product is actuated to open the circuit; if the plug rod 600a of the external accessory moves with the closing of the accessory, the second linkage member 27a will follow the plug rod 600a to the limit column 33a. During this process, the third linkage member 28a will also move with the moving contact support 16a, and always maintain a certain gap with the second linkage member 27a to ensure the smooth closing of the circuit breaker and the accessory).
  • the first protrusion 2704a and the second protrusion 2904a both have a pointed shape with a contracted front end, so that when the third linkage member 29a deflects in a direction away from the second linkage member 27a to cause a change in angle, the first protrusion 2704a and the second protrusion 2904a can be quickly offset, and the second protrusion 2904a can be more quickly out of the travel range of the first protrusion 2704a, and the two can be prevented from contacting each other again.
  • the first elastic member 28a and the second elastic member 30a are torsion springs in the present embodiment, but in other embodiments they may be tension springs, compression springs or other elastic members, but the installation method needs to be adaptively changed to ensure potential energy with the same motion effect.
  • the disclosed embodiment also provides a combined switch electrical appliance, including the circuit breaker described in the above embodiment, and external accessories coupled to the circuit breaker. Since the present embodiment adopts the circuit breaker in the above embodiment, it has the same technical effect as the circuit breaker in the above embodiment.
  • the coupled external accessories include but are not limited to: auxiliary contact device, alarm contact device, undervoltage release, overvoltage release, shunt release.

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Abstract

A tripping mechanism of a circuit breaker, and a circuit breaker. The tripping mechanism comprises a jump pin (17), a re-buckle (18) and a lock latch (20), which are rotatably arranged, wherein the re-buckle (18) is of a labor-saving lever structure and comprises a first lever arm (181) and a second lever arm (182); a first lap joint portion (1703) is arranged on the jump pin (17), a first press-fitting portion (1801) is correspondingly provided on the first lever arm (181); and a second lap joint portion (1803) is provided on the second lever arm (182), and a second press-fitting portion (2001) is correspondingly provided on the lock latch (20). The relative positions of the jump pin (17), the re-buckle (18) and the lock latch (20) are configured in such a way that, by means of relative rotation between each other, the first press-fitting portion (1801) is press-fitted to the first lap joint portion (1703) while the second press-fitting portion (2001) is press-fitted to the second lap joint portion (1803), thus the rotation of the jump pin (17) is limited, a first rotating force arm (L1) of the first press-fitting portion (1801) being smaller than a second rotating force arm (L2) of the second lap joint portion (1803).

Description

断路器的脱扣机构和断路器Tripping mechanism of circuit breaker and circuit breaker
交叉引用cross reference
本公开要求于2022年9月29日提交的申请号为202211200068.5、名称为“断路器的脱扣机构和断路器”，以及申请号为202211200055.8、名称为“一种断路器以及组合开关电器”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。The present disclosure claims priority to Chinese patent applications with application number 202211200068.5 filed on September 29, 2022, entitled “Tripping mechanism of circuit breaker and circuit breaker”, and application number 202211200055.8, entitled “A circuit breaker and a combination switching device”, the entire contents of which are incorporated herein by reference in their entirety.
技术领域Technical Field
本公开涉及断路器制造技术领域，具体涉及脱扣机构的改进以及具有该脱扣机构的断路器。The present disclosure relates to the technical field of circuit breaker manufacturing, and in particular to an improvement of a tripping mechanism and a circuit breaker having the tripping mechanism.
背景技术Background technique
脱扣机构是断路器中的常见机构之一，其作用在于当回路中产生异常情况需要快速断开时，脱扣机构解扣后，通过跳扣的快速动作带动动触头快速分闸。现有的脱扣机构一般只包括跳扣和锁扣，跳扣和动触头联动连接且搭接于锁扣，使跳扣和锁扣处于锁定状态，锁扣又和脱扣器配合，当脱扣器作用在锁扣上时锁扣动作，使得跳扣和锁扣的锁定状态被解除，引发跳扣的快速动作。然而，由于断路器内部空间的限制，跳扣的尺寸一般比较小(比较短)，导致其施力的力臂较短，在跳扣扭矩不变的前提下，作用力臂越短，跳扣作用在锁扣上的力就比较大，与之相对应的，锁扣要锁定跳扣的锁定力也比较大，进而导致要解锁锁扣所需的解锁力也更大。相关技术中常用的脱扣器(如电磁式的脱扣器)的推杆的推力和推程都较小，所以锁扣所需的解扣力过大，脱扣器的推力可能无法推动脱扣机构解扣，当电路中产生异常情况时，无法保障触头间的快速断开。The tripping mechanism is one of the common mechanisms in the circuit breaker. Its function is that when an abnormal situation occurs in the circuit and needs to be quickly disconnected, after the tripping mechanism is unhooked, the fast action of the tripping buckle drives the moving contact to quickly open the gate. The existing tripping mechanism generally only includes a tripping buckle and a lock buckle. The tripping buckle and the moving contact are linked and overlapped with the lock buckle, so that the tripping buckle and the lock buckle are in a locked state. The lock buckle cooperates with the tripping device. When the tripping device acts on the lock buckle, the lock buckle acts, so that the locked state of the tripping buckle and the lock buckle is released, causing the fast action of the tripping buckle. However, due to the limitation of the internal space of the circuit breaker, the size of the tripping buckle is generally small (shorter), resulting in a shorter force arm for its force application. Under the premise that the torque of the tripping buckle remains unchanged, the shorter the force arm, the greater the force of the tripping buckle on the lock buckle. Correspondingly, the locking force of the lock buckle to lock the tripping buckle is also relatively large, which leads to a greater unlocking force required to unlock the lock buckle. The push rod of the commonly used release device in the related technology (such as electromagnetic release device) has a small thrust and push range, so the unlocking force required for the lock is too large, and the thrust of the release device may not be able to push the release mechanism to unlock. When an abnormal situation occurs in the circuit, the quick disconnection between the contacts cannot be guaranteed.
发明内容Summary of the invention
因此，针对上述问题，根据本公开的一方面，提出一种结构优化的断路器的脱扣机构以及具有该脱扣机构的断路器。Therefore, in view of the above problems, according to one aspect of the present disclosure, a tripping mechanism of a circuit breaker with an optimized structure and a circuit breaker having the tripping mechanism are proposed.
本公开采用如下技术方案实现：The present disclosure is implemented by the following technical solutions:
一种断路器的脱扣机构，包括可转动设置的跳扣、再扣和锁扣，所述再扣是省力杠杆结构，包括第一杠杆臂和第二杠杆臂，所述跳扣上设有第一搭接部，对应的在所述第一杠杆臂上设有第一压接部，所述第二杠杆臂上设有第二搭接部，对应的在所述锁扣上设有第二压接部，所述跳扣、再扣和锁扣三者的相对位置被配置为：通过彼此间的相对转动，能够使得第二压接部压扣配合于第二搭接部的同时第一压接部压扣配合于第一搭接部，从而限制跳扣的转动，其中，所述第一压接部的第一转动力臂小于所述第二搭接部的第二转动力臂。A tripping mechanism for a circuit breaker comprises a rotatable tripping catch, a re-catch and a lock catch, wherein the re-catch is a labor-saving lever structure, comprising a first lever arm and a second lever arm, the tripping catch is provided with a first overlapping portion, and the first lever arm is correspondingly provided with a first crimping portion, the second lever arm is provided with a second overlapping portion, and the lock catch is correspondingly provided with a second crimping portion, the relative positions of the tripping catch, the re-catch and the lock catch are configured such that through relative rotation between each other, the second crimping portion can be press-fitted to the second overlapping portion while the first crimping portion is press-fitted to the first overlapping portion, thereby limiting the rotation of the tripping catch, wherein the first rotation force arm of the first crimping portion is smaller than the second rotation force arm of the second overlapping portion.
在一些实施例中，所述第一杠杆臂和第二杠杆臂共同绕所述再扣的转动轴线转动，且所述第一杠杆臂和所述第二杠杆臂朝同一方向凸起，且所述第一杠杆臂和所述第二杠杆臂凸起的高度不同，或者 所述第一杠杆臂和所述第二杠杆臂具有夹角，该夹角为锐角，使二者呈V字形。In some embodiments, the first lever arm and the second lever arm rotate together around the rotation axis of the re-clamp, and the first lever arm and the second lever arm protrude in the same direction, and the protrusion heights of the first lever arm and the second lever arm are different, or The first lever arm and the second lever arm have an included angle, which is an acute angle, so that the two are in a V shape.
在一些实施例中，所述再扣和锁扣的转动中心分别设于所述跳扣的转动中心的两侧位置，以使所述第二杠杆臂是从所述跳扣转动中心的一侧延长至另一侧。In some embodiments, the rotation centers of the re-snap and the lock are respectively arranged on both sides of the rotation center of the jump snap, so that the second lever arm extends from one side of the rotation center of the jump snap to the other side.
在一些实施例中，所述跳扣是摆臂结构，所述第一搭接部设于所述跳扣的末端，所述第二搭接部设于所述第二杠杆臂的末端。In some embodiments, the jump buckle is a swing arm structure, the first overlapping portion is arranged at the end of the jump buckle, and the second overlapping portion is arranged at the end of the second lever arm.
在一些实施例中，所述锁扣上设有一和所述第二杠杆臂末端抵接的凸台，通过改变所述凸台的凸起高度以控制第二搭接部和第二压接部的搭接量。In some embodiments, the lock buckle is provided with a boss abutting against the end of the second lever arm, and the overlap amount of the second overlapping portion and the second crimping portion is controlled by changing the protruding height of the boss.
本公开实施例还提供一种断路器，包括操作机构以及动触头和静触头组成的触头组件，所述动触头和操作机构联动连接并相对所述静触头具有实现断路器导通或断开的活动行程，还包括用于实现断路器脱扣分闸的脱扣机构和用于触发所述脱扣机构解扣的脱扣器，所述脱扣机构上述的的断路器的脱扣机构，所述跳扣和操作机构联动连接，所述脱扣器传动连接于所述锁扣。The disclosed embodiment also provides a circuit breaker, comprising an operating mechanism and a contact assembly consisting of a moving contact and a stationary contact, wherein the moving contact and the operating mechanism are linked together and have a movable stroke relative to the stationary contact for realizing the conduction or disconnection of the circuit breaker, and further comprising a tripping mechanism for realizing the tripping and opening of the circuit breaker and a tripper for triggering the tripping mechanism to trip, wherein the tripping mechanism is the tripping mechanism of the circuit breaker mentioned above, the tripper is linked together with the operating mechanism, and the tripper is transmission-connected to the lock.
在一些实施例中，以断路器的长度方向为前后方向，以断路器的高度方向为上下方向，所述操作机构和触头组件大致呈上下布置，所述断路器的脱扣机构大致呈前后布置，从而形成十字形交叉布局。In some embodiments, with the length direction of the circuit breaker as the front-to-back direction and the height direction of the circuit breaker as the up-down direction, the operating mechanism and the contact assembly are roughly arranged up and down, and the tripping mechanism of the circuit breaker is roughly arranged front-to-back, thereby forming a cross-shaped cross layout.
在一些实施例中，所述再扣铰接在所述跳扣的后侧，所述锁扣铰接在所述跳扣的前侧，以使得所述第二杠杆臂是从后至前伸的。In some embodiments, the re-buckle is hinged on the rear side of the jump buckle, and the lock buckle is hinged on the front side of the jump buckle, so that the second lever arm extends from the rear to the front.
在一些实施例中，断路器还包括动触头支撑件，所述动触头安装设置在所述动触头支撑件上并随动于所述动触头支撑件，所述再扣铰接在所述跳扣的正后侧，所述锁扣铰接在所述跳扣前侧的斜上方，以使第二杠杆臂呈斜向上延伸，且所述锁扣和动触头支撑件形成一上一下布置。In some embodiments, the circuit breaker also includes a moving contact support, the moving contact is mounted on the moving contact support and moves with the moving contact support, the re-catch is hinged on the rear side of the trip catch, and the lock catch is hinged on the oblique upper side of the front side of the trip catch so that the second lever arm extends obliquely upward, and the lock catch and the moving contact support form an upper and lower arrangement.
在一些实施例中，所述操作机构包括可转动设于所述再扣上方的手柄，还包括一用于安装所述手柄的盘形连接座，所述再扣是匹配该盘形连接座外形的弯弧形延伸结构。In some embodiments, the operating mechanism includes a handle rotatably disposed above the re-hook, and also includes a disc-shaped connecting seat for mounting the handle, and the re-hook is an arc-shaped extension structure matching the shape of the disc-shaped connecting seat.
在一些实施例中，以断路器的宽度方向为左右方向，所述再扣的第一压接部和第二搭接部是在左右方向相错开的，且与所述第一压接部相配合的所述跳扣和与所述第二搭接部相配合的所述锁扣在左右方向也是相错开的、不处在一个左右方向上的平面内。In some embodiments, with the width direction of the circuit breaker as the left-right direction, the first crimping portion and the second overlapping portion of the re-lock are staggered in the left-right direction, and the jump buckle matched with the first crimping portion and the lock buckle matched with the second overlapping portion are also staggered in the left-right direction and are not in a plane in the left-right direction.
在一些实施例中，所述操作机构包括可转动设置的手柄，所述手柄分别具有分闸和合闸的两个停靠位置，所述手柄通过连杆机构同时和所述跳扣以及动触头联动连接，所述连杆机构传力于所述跳扣以使所述手柄从分闸向合闸位置摆动时拉动所述跳扣的所述第一搭接部抵向所述第一压接部、以及间接地推动第二搭接部抵向第二压接部，实现脱扣机构的锁定。In some embodiments, the operating mechanism includes a rotatable handle, and the handle has two parking positions of opening and closing respectively. The handle is linked to the trip latch and the moving contact at the same time through a connecting rod mechanism. The connecting rod mechanism transmits force to the trip latch so that when the handle swings from the opening position to the closing position, the first overlapping portion of the trip latch is pulled against the first crimping portion, and the second overlapping portion is indirectly pushed against the second crimping portion, thereby locking the trip mechanism.
在一些实施例中，所述手柄、再扣和锁扣分别对应配置有第一弹性件、第二弹性件和第三弹性件，所述第一弹性件用于为所述手柄提供朝分闸方向转动的弹性力、并间接为所述跳扣提供解扣后复位的弹性力，所述第二弹性件用于为所述再扣提供解扣后复位的弹性力，所述第三弹性件用于为所述锁扣提供解扣后复位的弹性力。In some embodiments, the handle, re-latch and lock are respectively configured with a first elastic member, a second elastic member and a third elastic member. The first elastic member is used to provide an elastic force for the handle to rotate in the direction of opening the switch, and indirectly provide an elastic force for the re-latch to return to its original position after being unfastened. The second elastic member is used to provide an elastic force for the re-latch to return to its original position after being unfastened. The third elastic member is used to provide an elastic force for the lock to return to its original position after being unfastened.
在一些实施例中，以断路器的高度方向为上下方向，所述第二搭接部设于所述锁扣转动轴线的上方，所述第二压接部下方设有一让位凹口以提供所述再扣复位的行程空间。In some embodiments, taking the height direction of the circuit breaker as the up-down direction, the second overlap portion is arranged above the rotation axis of the lock, and a clearance recess is arranged below the second crimping portion to provide travel space for the re-locking and resetting.
在一些实施例中，断路器还包括第一挡位部，所述第一挡位部固定设于所述跳扣和再扣的复位路径上以限位所述跳扣和再扣。In some embodiments, the circuit breaker further includes a first stop portion, which is fixedly disposed on a reset path of the tripping and re-tripping to limit the tripping and re-tripping.
在一些实施例中，所述跳扣能够先于所述再扣复位，所述再扣能够先于所述锁扣复位。In some embodiments, the trip buckle can be reset before the re-buckle, and the re-buckle can be reset before the lock buckle.
在一些实施例中，所述再扣复位运动方向的一端设有第一限位面，所述跳扣设有能够与所述第一 限位面抵接从而阻止所述再扣复位的第一止挡部，沿着所述跳扣的复位方向在所述第一限位面上设有第一抵接终止端，使得所述第一止挡部越过所述第一抵接终止端后和所述第一限位面相脱离从而解放所述再扣的复位行程，使得所述跳扣能够先于所述再扣复位。In some embodiments, one end of the re-fastening movement direction of the buckle is provided with a first limiting surface, and the jump buckle is provided with a The limiting surface abuts against the first stop portion to prevent the re-buckle from resetting, and a first abutment terminal end is provided on the first limiting surface along the resetting direction of the jump buckle, so that the first stop portion is separated from the first limiting surface after passing over the first abutment terminal end, thereby releasing the resetting stroke of the re-buckle, so that the jump buckle can be reset before the re-buckle.
在一些实施例中，所述锁扣复位运动方向的一端设有第二限位面，所述再扣设有能够与所述第二限位面抵接从而阻止所述锁扣复位的第二止挡部，沿着所述再扣的复位方向在所述第二限位面上设有第二抵接终止端，使得所述第二止挡部越过所述第二抵接终止端后和第二限位面相脱离从而解放所述锁扣的复位行程，使得所述再扣能够先于所述锁扣复位。In some embodiments, a second limiting surface is provided at one end of the lock buckle's resetting movement direction, and the re-snap is provided with a second stop portion that can abut against the second limiting surface to prevent the lock buckle from resetting, and a second abutment terminal end is provided on the second limiting surface along the resetting direction of the re-snap, so that the second stop portion disengages from the second limiting surface after passing over the second abutment terminal end, thereby releasing the lock buckle's resetting stroke, so that the re-snap can be reset before the lock buckle.
本公开实施例具有以下有益效果：本公开中，在脱扣机构中加入了再扣，使得脱扣机构中是锁扣先锁定再扣，再扣再锁定跳扣，而再扣是一省力杠杆结构，跳扣通过省力杠杆结构的作用，施加在锁扣上的力更小，因此要解锁锁扣所需的电磁脱扣器的解扣力也变小，确保在发生漏电故障时，触头能够自动断开。The embodiments of the present disclosure have the following beneficial effects: In the present disclosure, a re-lock is added to the tripping mechanism, so that in the tripping mechanism, the lock is first locked and then locked, and then locked and jumped. The re-lock is a labor-saving lever structure. The force applied to the lock by the jumper through the labor-saving lever structure is smaller, so the tripping force of the electromagnetic releaser required to unlock the lock is also reduced, ensuring that the contacts can be automatically disconnected when a leakage fault occurs.
根据本公开的另一方面，提供一种断路器，包括用于实现脱扣分闸的脱扣机构，所述脱扣机构包括跳扣，所述断路器还包括外部附件联动机构，所述外部附件联动机构包括第一联动件和第二联动件，所述第一联动件和所述跳扣同轴连接并能够联动，所述第二联动件可活动地设于所述第一联动件的一侧并能够在所述跳扣解扣时接受所述第一联动件的推动，所述第二联动件上设有耦合连接部，所述耦合连接部用于与外部附件进行耦合连接，使得所述第二联动件和外部附件的其中一个能够通过所述耦合连接的配合带动另一个产生动作。According to another aspect of the present disclosure, a circuit breaker is provided, comprising a tripping mechanism for realizing tripping and opening, the tripping mechanism comprising a tripping catch, the circuit breaker further comprising an external accessory linkage mechanism, the external accessory linkage mechanism comprising a first linkage member and a second linkage member, the first linkage member and the tripping catch being coaxially connected and being able to be linked, the second linkage member being movably arranged on one side of the first linkage member and being able to be pushed by the first linkage member when the tripping catch is unfastened, the second linkage member being provided with a coupling connection portion, the coupling connection portion being used to be coupled and connected with an external accessory, so that one of the second linkage member and the external accessory can drive the other to produce an action through the cooperation of the coupling connection.
在一些实施例中，所述脱扣机构还包括用于锁定或解锁跳扣的锁扣，断路器还包括第三联动件，所述第三联动件可活动设于所述第二联动件的一侧，并能够接受第二联动件的推动而产生动作，所述锁扣设有延伸至第三联动件背离第二联动件一侧的拨动部，使得所述第二联动件推动所述第三联动件时能够进一步拨动所述拨动部从而解锁所述锁扣对跳扣的锁定，以发生脱扣分闸。In some embodiments, the trip mechanism also includes a lock for locking or unlocking the tripper, and the circuit breaker also includes a third linkage, which is movably arranged on one side of the second linkage and can be pushed by the second linkage to produce a movement, and the lock is provided with a toggle portion extending to the side of the third linkage away from the second linkage, so that when the second linkage pushes the third linkage, the toggle portion can be further toggled to unlock the lock on the tripper, so as to cause a trip.
在一些实施例中，所述外部附件包括与所述耦合连接部进行耦合连接的耦合配合部，所述外部附件是通过第一联动件推动第二联动件而触发所述耦合配合部的被动触发类附件，或者是通过所述耦合配合部主动带动所述第二联动件的主动带动类附件。In some embodiments, the external accessory includes a coupling fitting portion coupled to the coupling connection portion, and the external accessory is a passively triggered accessory that triggers the coupling fitting portion by pushing the second linkage portion through the first linkage portion, or is an actively driven accessory that actively drives the second linkage portion through the coupling fitting portion.
在一些实施例中，所述耦合连接部和耦合配合部的其中一个是插孔，另一个是***在所述插孔中的插杆。In some embodiments, one of the coupling connection portion and the coupling mating portion is a socket, and the other is a rod inserted into the socket.
在一些实施例中，所述耦合连接部是插孔，所述耦合配合部是***在所述插孔中的插杆，且所述插孔的孔径大于所述插杆的杆径。In some embodiments, the coupling connection portion is a socket, the coupling fitting portion is an insertion rod inserted into the socket, and the hole diameter of the socket is larger than the rod diameter of the insertion rod.
在一些实施例中，所述第二联动件和第三联动件的相对侧各自设有互相朝对方凸伸靠近的第一凸伸部和第二凸伸部。In some embodiments, opposite sides of the second linkage member and the third linkage member are respectively provided with a first protruding portion and a second protruding portion that protrude toward each other.
在一些实施例中，断路器还包括用于带动动触头的动触头支撑件，所述第三联动件是一摆臂结构，所述第三联动件的第一端可转动连接于所述动触头支撑件，所述第三联动件的第二端在一弹性件作用下朝远离所述拨动部的方向抵向一固定接触点。In some embodiments, the circuit breaker also includes a moving contact support for driving the moving contact, the third linkage is a swing arm structure, the first end of the third linkage can be rotatably connected to the moving contact support, and the second end of the third linkage is pressed against a fixed contact point in a direction away from the toggle portion under the action of an elastic member.
在一些实施例中，所述第二联动件、第三联动件和动触头支撑件的相对位置满足：在分闸时，所述动触头支撑件能够带动所述第三联动件的第一端朝远离第二联动件的方向偏转，以脱离所述第二联动件的行程范围。In some embodiments, the relative positions of the second linkage member, the third linkage member and the moving contact support member satisfy that when the switch is opened, the moving contact support member can drive the first end of the third linkage member to deflect in a direction away from the second linkage member to escape from the travel range of the second linkage member.
在一些实施例中，所述第二联动件和第三联动件的相对侧各自设有互相朝对方凸伸靠近的第一凸 伸部和第二凸伸部，所述第一凸伸部和第二凸伸部具有前端逐渐收缩的尖角形状，以使得所述动触头支撑件分闸时，所述第二凸伸部能够快速脱离所述第一凸伸部的行程范围。In some embodiments, the second linkage member and the third linkage member are each provided with a first protrusion on opposite sides thereof that protrudes toward each other. The first protruding portion and the second protruding portion have a pointed shape with a gradually contracted front end, so that when the moving contact support is opened, the second protruding portion can quickly escape from the travel range of the first protruding portion.
在一些实施例中，断路器还包括用于指示断路器状态的指示件，所述指示件是一端和动触头支撑件转动连接的杠杆结构，所述固定接触点是所述指示件的转轴。In some embodiments, the circuit breaker further comprises an indicator for indicating the state of the circuit breaker, wherein the indicator is a lever structure with one end rotatably connected to the moving contact support, and the fixed contact point is a rotating shaft of the indicator.
在一些实施例中，所述第二联动件是一可转动设置的摆臂，在所述第二联动件朝靠近所述第一联动件运动方向的一侧固定设有限位柱，以限定第二联动件朝靠近所述第一联动件方向摆动的极限位置。In some embodiments, the second linkage member is a rotatable swing arm, and a limit column is fixedly provided on the side of the second linkage member toward the movement direction of the first linkage member to limit the extreme position of the second linkage member swinging toward the direction close to the first linkage member.
在一些实施例中，断路器还包括一安装基座，所述安装基座包括相对组装并连接的第一侧板和第二侧板，所述脱扣机构设置在第一侧板和第二侧板之间，所述外部附件联动机构则安装设置在所述第一侧板的外侧面，使得外部附件联动机构与脱扣机构处于不同的安装层级。In some embodiments, the circuit breaker also includes a mounting base, the mounting base includes a first side plate and a second side plate that are relatively assembled and connected, the tripping mechanism is arranged between the first side plate and the second side plate, and the external accessory linkage mechanism is installed on the outer side of the first side plate, so that the external accessory linkage mechanism and the tripping mechanism are at different installation levels.
基于上述的断路器，本公开还提供一种组合开关电器，包括上述任一实施例中所述的断路器以及与断路器耦合连接的外部附件。Based on the above-mentioned circuit breaker, the present disclosure further provides a combined switching device, including the circuit breaker described in any of the above-mentioned embodiments and an external accessory coupled to the circuit breaker.
本公开具有以下有益效果：通过设置外部附件联动机构，使得断路器能够模块化外接外部附件，且本公开实施例中的一套外部附件联动机构可以选配多种不同的外部附件，极大提高了断路器安装外部附件的灵活性。The present disclosure has the following beneficial effects: by setting an external accessory linkage mechanism, the circuit breaker can be modularly connected to external accessories, and a set of external accessory linkage mechanisms in the embodiment of the present disclosure can be equipped with a variety of different external accessories, which greatly improves the flexibility of installing external accessories on the circuit breaker.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本公开一些实施例中断路器的整体示意图。FIG. 1 is an overall schematic diagram of a circuit breaker in some embodiments of the present disclosure.
图2是本公开一些实施例中断路器的结构分解图。FIG. 2 is a structural exploded view of a circuit breaker in some embodiments of the present disclosure.
图3是本公开一些实施例中断路器的立体示意图(隐去上盖)。FIG. 3 is a three-dimensional schematic diagram of a circuit breaker in some embodiments of the present disclosure (with the upper cover hidden).
图4是本公开一些实施例中断路器导电***、操作机构和脱扣机构的示意图(合闸状态)。4 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (closed state).
图5是本公开一些实施例中操作联动组件的结构分解图。FIG. 5 is a structural exploded view of an operation linkage component in some embodiments of the present disclosure.
图6是本公开一些实施例中第一侧板的立体示意图。FIG. 6 is a perspective schematic diagram of a first side panel in some embodiments of the present disclosure.
图7是本公开一些实施例中第二侧板的立体示意图(角度一)。FIG. 7 is a perspective schematic diagram of the second side panel in some embodiments of the present disclosure (angle one).
图8是本公开一些实施例中手柄的立体示意图。FIG. 8 is a perspective schematic diagram of a handle in some embodiments of the present disclosure.
图9是本公开一些实施例中第二连杆的示意图。FIG. 9 is a schematic diagram of a second connecting rod in some embodiments of the present disclosure.
图10是本公开一些实施例中第三连杆的示意图。FIG. 10 is a schematic diagram of a third connecting rod in some embodiments of the present disclosure.
图11是本公开一些实施例中动触头支撑件的示意图。FIG. 11 is a schematic diagram of a moving contact support in some embodiments of the present disclosure.
图12是本公开一些实施例中跳扣的立体示意图。FIG. 12 is a three-dimensional schematic diagram of a jump button in some embodiments of the present disclosure.
图13是本公开一些实施例中锁扣的立体示意图(角度一)。FIG. 13 is a three-dimensional schematic diagram of a lock in some embodiments of the present disclosure (angle one).
图14是本公开一些实施例中锁扣的立体示意图(角度二)。FIG. 14 is a three-dimensional schematic diagram of a lock in some embodiments of the present disclosure (angle two).
图15是本公开一些实施例中再扣的立体示意图。FIG. 15 is a three-dimensional schematic diagram of buckling in some embodiments of the present disclosure.
图16是本公开一些实施例中再扣和锁扣配合的示意图。FIG. 16 is a schematic diagram of the cooperation between re-fastening and locking in some embodiments of the present disclosure.
图17是本公开一些实施例中断路器导电***、操作机构和脱扣机构的示意图(手动分闸状态)。17 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (manual tripping state).
图18是本公开一些实施例中断路器导电***、操作机构和脱扣机构的示意图(脱扣分闸状态)。18 is a schematic diagram of a circuit breaker conductive system, operating mechanism and tripping mechanism in some embodiments of the present disclosure (tripped and opened state).
图19是本公开一些实施例中电磁脱扣器、联动件和锁扣配合的示意图。FIG. 19 is a schematic diagram of the cooperation among the electromagnetic release, linkage and lock in some embodiments of the present disclosure.
图20是本公开一些实施例中联动件的立体示意图。 FIG. 20 is a three-dimensional schematic diagram of a linkage member in some embodiments of the present disclosure.
图21是本公开一些实施例中第二侧板的立体示意图(角度二)。Figure 21 is a three-dimensional schematic diagram of the second side panel in some embodiments of the present disclosure (angle two).
图22是本公开一些实施例中再扣的第一限位面和跳扣的第一止挡部配合的示意图。FIG. 22 is a schematic diagram of the cooperation between the first limiting surface of the re-fastening and the first stopping portion of the jump fastening in some embodiments of the present disclosure.
图23是本公开一些实施例中锁扣的第二限位面和再扣的第二止挡部配合的示意图。FIG. 23 is a schematic diagram of the cooperation between the second limiting surface of the lock and the second stop portion of the re-lock in some embodiments of the present disclosure.
图24是本公开一些实施例中第一压接部、跳扣和第二搭接部、锁扣在左右方向错开的示意图。Figure 24 is a schematic diagram of some embodiments of the present disclosure in which the first crimping portion, the jump buckle, the second overlapping portion, and the lock buckle are staggered in the left and right directions.
图25是本公开一些实施例中的再扣的俯视示意图。FIG. 25 is a schematic top view of a re-fastening in some embodiments of the present disclosure.
图26本公开一些实施例中断路器的整体示意图。FIG. 26 is an overall schematic diagram of a circuit breaker in some embodiments of the present disclosure.
图27是本公开一些实施例中断路器的结构分解图。FIG. 27 is an exploded view of a circuit breaker in some embodiments of the present disclosure.
图28是本公开一些实施例中断路器的立体示意图(隐去上盖)。FIG. 28 is a three-dimensional schematic diagram of a circuit breaker in some embodiments of the present disclosure (with the upper cover hidden).
图29是本公开一些实施例中导电***、操作机构和脱扣机构的示意图。FIG. 29 is a schematic diagram of a conductive system, an operating mechanism, and a tripping mechanism in some embodiments of the present disclosure.
图30是本公开一些实施例中操作联动组件的结构分解图。FIG. 30 is a structural exploded view of an operation linkage assembly in some embodiments of the present disclosure.
图31是本公开一些实施例中外部附件联动机构组配在断路器上的示意图(合闸状态)。31 is a schematic diagram of an external accessory linkage mechanism assembly on a circuit breaker in some embodiments of the present disclosure (closed state).
图32是本公开一些实施例中第一侧板的立体示意图。Figure 32 is a three-dimensional schematic diagram of the first side panel in some embodiments of the present disclosure.
图33是本公开一些实施例中第一联动件的示意图。FIG. 33 is a schematic diagram of a first linkage member in some embodiments of the present disclosure.
图34是本公开一些实施例中第二联动件的示意图。FIG. 34 is a schematic diagram of a second linkage member in some embodiments of the present disclosure.
图35是本公开一些实施例中第三联动件的示意图。FIG. 35 is a schematic diagram of a third linkage member in some embodiments of the present disclosure.
图36是本公开一些实施例中指示件的示意图。FIG. 36 is a schematic diagram of an indicator in some embodiments of the present disclosure.
图37是本公开一些实施例中外部附件通过插杆和第二联动件的插孔形成耦合连接的示意图。37 is a schematic diagram showing a coupling connection between an external accessory and a socket of a second linkage member through an insertion rod in some embodiments of the present disclosure.
图38是本公开一些实施例中第一联动件推动第二联动件进而触发被动触发类外部附件的示意图。38 is a schematic diagram of a first linkage member pushing a second linkage member to trigger a passively triggered external accessory in some embodiments of the present disclosure.
图39是本公开一些实施例中主动带动类外部附件推动第二联动件进而推动第三联动件触发脱扣分闸的示意图。39 is a schematic diagram of actively driving an external accessory to push a second linkage member and then a third linkage member to trigger tripping and opening of the switch in some embodiments of the present disclosure.
图40是本公开一些实施例中外部附件联动机构组配在断路器上的示意图(分闸状态)。FIG. 40 is a schematic diagram of an external accessory linkage mechanism assembly on a circuit breaker in some embodiments of the present disclosure (open state).
具体实施方式Detailed ways
为进一步说明各实施例，本公开提供有附图。这些附图为本公开揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本公开的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。To further illustrate the various embodiments, the present disclosure provides drawings. These drawings are part of the disclosure of the present disclosure, and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present disclosure. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
现结合附图和具体实施方式对本公开进一步说明。The present disclosure is now further described in conjunction with the accompanying drawings and specific implementation methods.
如图1-4所示，本公开实施例提供一种断路器，更具体的说是一种根据剩余电流而动作的断路器，包括外壳体100和导电***3，该外壳体100是由上盖1001和底座1002组装后固定连接形成的断路器外壳；导电***3设于该外壳体100内部，参阅图4，导电***3包括由动触头301和静触头302组成的触头组件，还包括接线端子300和导电铜排等，通电后以形成断路器的导电回路，其中动触头301相对静触头302具有一活动行程，以实现动触头301和静触头302的接触或分离，从而实现断路器的分、合闸。如图2所示，外壳体100的内腔中还设有用于对剩余电流测量的零序电流互感器1003、用于进行灭弧处理的灭弧栅片1004以及用于实现脱扣分闸的电磁脱扣器4，外壳体100上还安装有用于实现断路器漏电功能检测的测试按钮41。为便于描述，本实施例中：定义断 路器的高度方向，即图2中的Z1、Z2方向分别为上、下方向；定义断路器的宽度方向，即图2中的X1、X2方向分别为左、右方向；并定义断路器的长度方向，即图2中的Y1、Y2方向分别为前、后方向。As shown in FIGS. 1-4 , an embodiment of the present disclosure provides a circuit breaker, more specifically, a circuit breaker that operates according to residual current, including an outer shell 100 and a conductive system 3. The outer shell 100 is a circuit breaker shell formed by assembling an upper cover 1001 and a base 1002 and fixing them together; the conductive system 3 is arranged inside the outer shell 100. Referring to FIG. 4 , the conductive system 3 includes a contact assembly consisting of a moving contact 301 and a stationary contact 302, and also includes a wiring terminal 300 and a conductive copper busbar, etc. After power is turned on, a conductive circuit of the circuit breaker is formed, wherein the moving contact 301 has a movable stroke relative to the stationary contact 302 to achieve contact or separation between the moving contact 301 and the stationary contact 302, thereby realizing the opening and closing of the circuit breaker. As shown in FIG2 , the inner cavity of the outer shell 100 is also provided with a zero-sequence current transformer 1003 for measuring residual current, an arc-extinguishing grid 1004 for arc extinguishing, and an electromagnetic release 4 for realizing tripping and opening. The outer shell 100 is also equipped with a test button 41 for realizing the leakage function detection of the circuit breaker. For the convenience of description, in this embodiment: The height direction of the circuit breaker, i.e., the Z1 and Z2 directions in FIG. 2 are respectively the up and down directions; the width direction of the circuit breaker, i.e., the X1 and X2 directions in FIG. 2 are respectively the left and right directions; and the length direction of the circuit breaker, i.e., the Y1 and Y2 directions in FIG. 2 are respectively the forward and backward directions.
该断路器还包括操作联动组件2，参阅图4、5，操作联动组件2包括在左右方向对置的第一侧板22和第二侧板23，第一侧板22和第二侧板23相对组装连接以构成操作联动组件2的安装基座，操作联动组件2还包括设置在第一侧板22和第二侧板23之间的手柄11、第一连杆13、第二连杆14、第三连杆15、跳扣17、再扣18和锁扣20。其中手柄11、第一连杆13、第二连杆14和第三连杆15组成断路器的操作机构，用于通过手动扳动手柄11来操控动触头301的分、合闸运动；跳扣17、再扣18和锁扣20组成断路器的脱扣机构，用于配合电磁脱扣器4实现断路器的脱扣分闸。The circuit breaker also includes an operating linkage assembly 2. Referring to FIGS. 4 and 5 , the operating linkage assembly 2 includes a first side plate 22 and a second side plate 23 that are opposite to each other in the left-right direction. The first side plate 22 and the second side plate 23 are relatively assembled and connected to form a mounting base for the operating linkage assembly 2. The operating linkage assembly 2 also includes a handle 11, a first connecting rod 13, a second connecting rod 14, a third connecting rod 15, a tripping catch 17, a re-catch 18, and a lock catch 20 that are arranged between the first side plate 22 and the second side plate 23. The handle 11, the first connecting rod 13, the second connecting rod 14, and the third connecting rod 15 constitute an operating mechanism of the circuit breaker, which is used to control the opening and closing movement of the moving contact 301 by manually pulling the handle 11; the tripping catch 17, the re-catch 18, and the lock catch 20 constitute a tripping mechanism of the circuit breaker, which is used to cooperate with the electromagnetic release 4 to realize the tripping and opening of the circuit breaker.
具体的，手柄11可转动地连接在第一侧板22上，参阅图6和图8，本实施例中，手柄11具体是以其手柄轴1101可转动插接在第一侧板22的第一插孔2201上。第一连杆13的一端和手柄11铰接，另一端和第二连杆14、第三连杆15铰接在同一铰点，具体的，参阅图4、5以及图8-10，本实施例中第一连杆13是一U型杆，第二连杆14的一端设有第二插孔1401、另一端设有第三插孔1402，第三连杆15一端设有第四插孔1501、另一端设有第五插孔1502，其中第二插孔1401和第四插孔1501重叠设置，第一连杆13的一端可转动插接在手柄11上的第六插孔1103内，另一端同时可转动地插接在第二插孔1401和第四插孔1501中。Specifically, the handle 11 is rotatably connected to the first side plate 22, referring to Figures 6 and 8. In this embodiment, the handle 11 is specifically rotatably plugged into the first socket 2201 of the first side plate 22 by its handle shaft 1101. One end of the first connecting rod 13 is hinged to the handle 11, and the other end is hinged to the second connecting rod 14 and the third connecting rod 15 at the same hinge point. Specifically, referring to Figures 4, 5 and Figures 8-10, in this embodiment, the first connecting rod 13 is a U-shaped rod, one end of the second connecting rod 14 is provided with a second socket 1401, and the other end is provided with a third socket 1402, one end of the third connecting rod 15 is provided with a fourth socket 1501, and the other end is provided with a fifth socket 1502, wherein the second socket 1401 and the fourth socket 1501 are overlapped, one end of the first connecting rod 13 is rotatably plugged into the sixth socket 1103 on the handle 11, and the other end is rotatably plugged into the second socket 1401 and the fourth socket 1501 at the same time.
一动触头支撑件16与第三连杆15铰接，具体的，参阅图4、10、11，第三连杆15的第五插孔1502与动触头支撑件16所设有的第七插孔1601通过销轴铰接。如图11所示，动触头支撑件16同时还通过其设有的凸柱1602铰接在外壳体100上，动触头301设置于动触头支撑件16上，并跟随动触头支撑件16的运动而运动，例如动触头301可以是固接或铰接在动触头支撑件16上。在本实施例中，动触头301铰接在动触头支撑件16上。动触头301一端通过一弹性件限位在动触头转轴16的限位位置上，在动触头30超行程运动过程中，动触头301的另一端被静触头302限制住时，动触头301的一端在弹性件的作用下离开动触头转轴16的限位位置。A moving contact support 16 is hinged to the third connecting rod 15. Specifically, referring to FIGS. 4, 10 and 11, the fifth jack 1502 of the third connecting rod 15 is hinged to the seventh jack 1601 of the moving contact support 16 through a pin. As shown in FIG. 11, the moving contact support 16 is also hinged to the outer shell 100 through the boss 1602 provided thereon. The moving contact 301 is provided on the moving contact support 16 and moves with the movement of the moving contact support 16. For example, the moving contact 301 can be fixed or hinged to the moving contact support 16. In this embodiment, the moving contact 301 is hinged to the moving contact support 16. One end of the moving contact 301 is limited at the limiting position of the moving contact shaft 16 by an elastic member. During the overtravel movement of the moving contact 30, when the other end of the moving contact 301 is limited by the static contact 302, one end of the moving contact 301 leaves the limiting position of the moving contact shaft 16 under the action of the elastic member.
跳扣17和锁扣20可转动地连接在第一侧板22上，再扣18可转动连接在第二侧板23上。其中，具体的，参阅图6-7以及图12-15，跳扣17以其设有的第八插孔1702通过销轴和第一侧板22设有的第九插孔2203铰接；再扣18以其设有第十插孔1802和第二侧板23所设有的再扣转轴2301上可转动地插接，锁扣20以其设有的锁扣转轴2002可转动地插接第一侧板22所设有的第十一插孔2204中。The jump buckle 17 and the lock buckle 20 are rotatably connected to the first side plate 22, and the re-buckle 18 is rotatably connected to the second side plate 23. Specifically, referring to Figures 6-7 and 12-15, the jump buckle 17 is hinged with its eighth insertion hole 1702 and the ninth insertion hole 2203 provided on the first side plate 22 through a pin; the re-buckle 18 is rotatably plugged with its tenth insertion hole 1802 and the re-buckle shaft 2301 provided on the second side plate 23, and the lock buckle 20 is rotatably plugged with its lock buckle shaft 2002 provided in the eleventh insertion hole 2204 provided on the first side plate 22.
如图12所示，该跳扣17在其长度中段区间还设有第十二插孔1701，如图9所示，第二连杆14的第三插孔1402与该第十二插孔1701通过销轴铰接在一起。As shown in FIG. 12 , the jumper 17 is further provided with a twelfth insertion hole 1701 in the middle section of its length. As shown in FIG. 9 , the third insertion hole 1402 of the second connecting rod 14 is hinged to the twelfth insertion hole 1701 through a pin.
上述说明中例举了多种铰接方式，如孔和孔通过销轴实现铰接，或者孔和轴相插接实现的铰接，这些铰接设置手段在其他实施例中可以相互替代，凡能够实现铰接功能即为可行的方案。The above description cites a variety of articulation methods, such as articulation between holes through pins, or articulation between holes and shafts. These articulation setting methods can be replaced by each other in other embodiments, and any solution that can achieve the articulation function is a feasible solution.
本实施例中上述操作联动组件2的构件中部分可转动连接在第一侧板22上(如跳扣17)，部分可转动连接在第二侧板23上(如再扣18)，但显而易见的是，在其他实施例中这些构件可以任意地更改为转动连接在第一侧板22和/或第二侧板23上，对本领域技术人员来说这其中不存在技术障碍。第一侧板22和第二侧板23只是一个具体的实施例，在其他实施例中只要是提供一安装基座，使这些构件(如跳扣17和再扣18等)能够可转动地设置在该安装基座上即可。此安装基座并非必 须是本实施例的特定结构的第一侧板22和第二侧板23，其也可以是一块固定设置在外壳体100内的安装平板，甚至也可以是外壳体100的内壁。In this embodiment, some of the components of the above-mentioned operating linkage assembly 2 are rotatably connected to the first side plate 22 (such as the jump buckle 17), and some are rotatably connected to the second side plate 23 (such as the re-buckle 18), but it is obvious that in other embodiments, these components can be arbitrarily changed to be rotatably connected to the first side plate 22 and/or the second side plate 23, and there is no technical obstacle for those skilled in the art. The first side plate 22 and the second side plate 23 are only a specific embodiment. In other embodiments, it is sufficient to provide a mounting base so that these components (such as the jump buckle 17 and the re-buckle 18, etc.) can be rotatably set on the mounting base. This mounting base is not necessarily It must be the first side plate 22 and the second side plate 23 of the specific structure of this embodiment, and it can also be a mounting plate fixedly arranged in the outer shell 100, or even the inner wall of the outer shell 100.
归纳地说，在操作联动组件2中，手柄11以及脱扣机构(即跳扣17、再扣18和锁扣20)均为可转动设置；第一连杆13一端和手柄11铰接，另一端和第二连杆14、第三连杆15铰接在同一铰点；第二连杆14还同时铰接在跳扣17上；第三连杆15还同时和动触头支撑件16铰接；动触头301设置于动触头支撑件16上，并跟随动触头支撑件16的运动而运动。In summary, in the operating linkage assembly 2, the handle 11 and the tripping mechanism (i.e., the tripping catch 17, the re-catch 18 and the lock catch 20) are all rotatably arranged; one end of the first connecting rod 13 is hinged to the handle 11, and the other end is hinged to the second connecting rod 14 and the third connecting rod 15 at the same hinge point; the second connecting rod 14 is also hinged to the tripping catch 17; the third connecting rod 15 is also hinged to the moving contact support 16; the moving contact 301 is arranged on the moving contact support 16, and moves with the movement of the moving contact support 16.
接下来解释说明脱扣机构的锁扣以及解扣(脱扣)原理。参阅图4、12-18，该跳扣17上设有第一搭接部1703，对应地，再扣18上设有第一压接部1801；该再扣18上还设有第二搭接部1803，对应地，锁扣20上设有第二压接部2001。其中，跳扣17、再扣18和锁扣20三者的相对位置被配置为：通过彼此间的相对转动，能够使得第二压接部2001压扣配合于第二搭接部1803的同时，第一压接部1801压扣配合于第一搭接部1703，从而限制跳扣17的转动。如图4所示，当断路器处于合闸状态时，锁扣20以其第二压接部2001向下压扣在再扣18的第二搭接部1803上，与此同时再扣18以其第一压接部1801向下压扣在跳扣17的第一搭接部1703上，也就是此时跳扣17被限位锁定，使其不能向上摆动。Next, the locking and unfastening (tripping) principle of the tripping mechanism is explained. Referring to Figures 4, 12-18, the jumper 17 is provided with a first lap joint 1703, and correspondingly, the re-lock 18 is provided with a first crimping portion 1801; the re-lock 18 is also provided with a second lap joint 1803, and correspondingly, the lock 20 is provided with a second crimping portion 2001. The relative positions of the jumper 17, the re-lock 18 and the lock 20 are configured such that, through relative rotation between each other, the second crimping portion 2001 can be pressed and fitted with the second lap joint 1803, while the first crimping portion 1801 can be pressed and fitted with the first lap joint 1703, thereby limiting the rotation of the jumper 17. As shown in Figure 4, when the circuit breaker is in the closed state, the lock buckle 20 is pressed downwardly on the second lap portion 1803 of the re-lock 18 with its second crimping portion 2001, and at the same time, the re-lock 18 is pressed downwardly on the first lap portion 1703 of the jump buckle 17 with its first crimping portion 1801. That is, at this time, the jump buckle 17 is limited and locked so that it cannot swing upward.
如图5所示，手柄11配设有第一弹性件1006(即手柄弹簧)，可以理解的是，当锁扣20锁定、断路器经手柄11的摆动从手动分闸状态(图17)切换至手动合闸状态(图4)时，手柄弹簧蓄能，手柄11通过第一连杆13和第二连杆14会给予跳扣17一个向上摆动的力(拉动力)，但由于再扣18和锁扣20对跳扣17的锁定，使得跳扣17无法向上摆动，亦即：合闸状态下，跳扣17处在和再扣18、锁扣20受力平衡的锁定状态。而由于跳扣17被锁定(跳扣17不会转动)，因此手动分、合闸时，第二连杆14将以其与跳扣17的铰接点A为支点转动，从而带动第三连杆15、动触头支撑件16以及动触头301活动。当锁扣20解锁时，此受力平衡状态就会被打破，从而造成脱扣分闸。参阅图4，当锁扣20受到电磁脱扣器4驱动后并在第二压接部2001与再扣18的第二搭接部1803分离时(在图4的特定视图状态下第二压接部2001顺时针转动)，跳扣17则会向上推动再扣18向上摆动，直至再扣18的第一压接部1801无法压制住跳扣17的第一搭接部1703，则跳扣17解锁(解扣)，跳扣17快速地顺时针摆动(在图4的特定视图状态下，跳扣17绕其与安装基座的铰接点B转动)，带动第二连杆14以跳扣17和安装基座的铰接点B为转轴转动，进而带动动触头301脱扣分闸，快速实现分断工作。图18示出了在脱扣分闸阶段，脱扣机构在脱扣瞬时的大致状态(最终状态还受到复位弹簧的影响，将在下面说明)。As shown in FIG5 , the handle 11 is provided with a first elastic member 1006 (i.e., a handle spring). It is understood that when the lock catch 20 is locked and the circuit breaker is switched from the manual opening state ( FIG17 ) to the manual closing state ( FIG4 ) by the swing of the handle 11 , the handle spring stores energy, and the handle 11 gives the tripping catch 17 an upward swinging force (pulling force) through the first connecting rod 13 and the second connecting rod 14 . However, due to the locking of the tripping catch 17 by the re-clip 18 and the lock catch 20 , the tripping catch 17 cannot swing upward, that is, in the closing state, the tripping catch 17 is in a locked state with a force balance with the re-clip 18 and the lock catch 20 . Since the tripping catch 17 is locked (the tripping catch 17 will not rotate), when the circuit breaker is manually opened or closed, the second connecting rod 14 will rotate with the hinge point A between it and the tripping catch 17 as a fulcrum, thereby driving the third connecting rod 15 , the moving contact support 16 and the moving contact 301 to move. When the lock catch 20 is unlocked, this force balance state will be broken, thereby causing the tripping and opening. Referring to FIG4 , when the lock catch 20 is driven by the electromagnetic release 4 and the second crimping part 2001 is separated from the second lap part 1803 of the re-clip 18 (the second crimping part 2001 rotates clockwise in the specific view state of FIG4 ), the trip catch 17 will push the re-clip 18 upward to swing upward until the first crimping part 1801 of the re-clip 18 cannot suppress the first lap part 1703 of the trip catch 17, then the trip catch 17 is unlocked (unfastened), and the trip catch 17 quickly swings clockwise (in the specific view state of FIG4 , the trip catch 17 rotates around the hinge point B between the trip catch 17 and the mounting base), driving the second connecting rod 14 to rotate with the hinge point B between the trip catch 17 and the mounting base as the rotation axis, and then driving the moving contact 301 to trip and open the gate, and quickly realize the disconnection work. FIG18 shows the approximate state of the tripping mechanism at the moment of tripping in the tripping and opening stage (the final state is also affected by the reset spring, which will be explained below).
上述的脱扣机构方案中，本实施例与相关技术的最大区别在于加入了再扣18。在另一些实施例中，锁扣20可以直接作用在跳扣17上，即单独通过锁扣20完成对跳扣17的锁定，例如，锁扣20是铰接在跳扣17后侧的位置(即大致铰接在本实施例中再扣18的铰接位置)。由于断路器内部空间的限制，跳扣17的尺寸一般比较小(比较短)，导致其施力的力臂较短，在跳扣17扭矩不变的前提下，作用力臂越短，跳扣17作用在锁扣20上的力就比较大，与之相对应地，锁扣20要锁定跳扣17的锁定力也比较大，进而导致要解锁锁扣20所需的解锁力也更大。然而，常用的电磁脱扣器的推力和推程都较小，锁扣20所需的解扣力过大，电磁脱扣器4的推力可能无法推动产品解扣，当电路中出现剩余电流并达到断路器的额定值(漏电)时，无法保障在发生漏电故障的情况下触头断开。 In the above-mentioned tripping mechanism scheme, the biggest difference between this embodiment and the related art is the addition of the re-clip 18. In other embodiments, the lock 20 can act directly on the tripping latch 17, that is, the tripping latch 17 is locked by the lock 20 alone. For example, the lock 20 is hinged at the rear side of the tripping latch 17 (that is, roughly hinged at the hinge position of the re-clip 18 in this embodiment). Due to the limitation of the internal space of the circuit breaker, the size of the tripping latch 17 is generally small (shorter), resulting in a shorter force arm for its force application. Under the premise that the torque of the tripping latch 17 remains unchanged, the shorter the force arm, the greater the force of the tripping latch 17 acting on the lock 20. Correspondingly, the locking force of the lock 20 to lock the tripping latch 17 is also relatively large, which leads to a greater unlocking force required to unlock the lock 20. However, the thrust and pushing range of commonly used electromagnetic releases are relatively small, the unlocking force required for the lock 20 is too large, and the thrust of the electromagnetic release 4 may not be able to push the product to unlock. When residual current appears in the circuit and reaches the rated value of the circuit breaker (leakage), it cannot be guaranteed that the contacts will be disconnected in the event of a leakage fault.
而本实施例加入了再扣18，锁扣20先锁定再扣18，再扣18再锁定跳扣17，换言之，跳扣17是先施力于再扣18，再扣18再施力于锁扣20。且本实施例中，再扣18是一省力杠杆结构，如图15所示，再扣18包括第一杠杆臂181和第二杠杆臂182，其中第一压接部1801设置在第一杠杆臂181上，第二搭接部1803设置在第二杠杆臂182上，且述第一压接部1801的第一转动力臂L1小于第二搭接部1803的第二转动力臂L2，如图4所示，其中，第一转动力臂L1是跳扣17的第一搭接部1703施加于再扣18的第一杠杆臂181的第一压接部1801的力的作用点与再扣转轴2301的中心点之间的距离，第二转动力臂L2是锁扣20的第二压接部2001施加于再扣的第二杠杆壁182的第二搭接部1803的力的作用点与再扣转轴2301的中心点之间的距离。从而通过具有省力杠杆结构的再扣18的作用，在跳扣17的扭矩不变的前提下，跳扣17作用在锁扣20上的力就更小，要解锁锁扣20所需的电磁脱扣器4的解扣力也变小，确保在发生漏电故障时，触头能够自动断开。In this embodiment, a re-buckle 18 is added, and the lock buckle 20 first locks the re-buckle 18, and the re-buckle 18 then locks the jump buckle 17. In other words, the jump buckle 17 first applies force to the re-buckle 18, and the re-buckle 18 then applies force to the lock buckle 20. In this embodiment, the re-lock 18 is a force-saving lever structure, as shown in Figure 15, the re-lock 18 includes a first lever arm 181 and a second lever arm 182, wherein the first crimping portion 1801 is arranged on the first lever arm 181, and the second lap portion 1803 is arranged on the second lever arm 182, and the first turning force arm L1 of the first crimping portion 1801 is smaller than the second turning force arm L2 of the second lap portion 1803, as shown in Figure 4, wherein the first turning force arm L1 is the distance between the point of application of the force of the first lap portion 1703 of the jump lock 17 applied to the first crimping portion 1801 of the first lever arm 181 of the re-lock 18 and the center point of the re-lock shaft 2301, and the second turning force arm L2 is the distance between the point of application of the force of the second crimping portion 2001 of the lock buckle 20 applied to the second lap portion 1803 of the second lever wall 182 of the re-lock and the center point of the re-lock shaft 2301. Therefore, through the action of the re-lock 18 with a labor-saving lever structure, under the premise that the torque of the trip lock 17 remains unchanged, the force exerted by the trip lock 17 on the lock 20 is smaller, and the tripping force of the electromagnetic release 4 required to unlock the lock 20 is also reduced, ensuring that the contacts can be automatically disconnected when a leakage fault occurs.
跳扣17是一摆臂结构，如图12和图15所示，本实施例中第一搭接部1703和第二搭接部1803是分别设于跳扣17和第二杠杆臂182的末端的搭接面(或也可以是搭接边)。使得一旦第一搭接部1703和第二搭接部1803被解扣，跳扣17就能快速脱扣跳起，提高了脱扣响应速度。第一压接部1801和第二压接部2001是由两个平面交接形成的边角结构，具体地，如图15所示，第一压接部1801的两个平面分别为第一平面18011和第二平面18012，如图13所示，第二压接部2001的两个平面分别是第三平面20011和第四平面20012。因此在锁扣20转动一定角度时，第二搭接部1803一旦滑出该边角状的第二压接部2001就能够快速地和第二压接部2001分离，在再扣18转动一定角度时，第一搭接部1703一旦滑出该边角状的第一压接部1801就能够快速地和第一压接部1801分离。为了方便跳扣17的复位，如图4和图15所示，第一压接部1801的两个平面中相对处于上方的第一平面18011的斜度更大，使得跳扣17解扣复位时，此斜度更大的第一平面18011可以作为一引导面引导跳扣17可靠复位，对于构成第二压接部2001的两个平面也是采用同样的原理设计。The jumper 17 is a swing arm structure, as shown in FIG. 12 and FIG. 15 , in this embodiment, the first overlap portion 1703 and the second overlap portion 1803 are overlap surfaces (or overlap edges) respectively arranged at the ends of the jumper 17 and the second lever arm 182. Once the first overlap portion 1703 and the second overlap portion 1803 are unhooked, the jumper 17 can be quickly unhooked and jumped up, thereby improving the unhooking response speed. The first crimping portion 1801 and the second crimping portion 2001 are corner structures formed by the intersection of two planes. Specifically, as shown in FIG. 15 , the two planes of the first crimping portion 1801 are respectively the first plane 18011 and the second plane 18012. As shown in FIG. 13 , the two planes of the second crimping portion 2001 are respectively the third plane 20011 and the fourth plane 20012. Therefore, when the lock buckle 20 rotates a certain angle, once the second overlap portion 1803 slides out of the corner-shaped second crimping portion 2001, it can be quickly separated from the second crimping portion 2001. When the lock buckle 18 rotates a certain angle, once the first overlap portion 1703 slides out of the corner-shaped first crimping portion 1801, it can be quickly separated from the first crimping portion 1801. In order to facilitate the reset of the jump buckle 17, as shown in Figures 4 and 15, the slope of the first plane 18011 located above the two planes of the first crimping portion 1801 is larger, so that when the jump buckle 17 is unfastened and reset, the first plane 18011 with a larger slope can serve as a guide surface to guide the jump buckle 17 to reset reliably. The same principle design is also adopted for the two planes constituting the second crimping portion 2001.
本实施例中，如图15所示，第一杠杆臂181的第一长度d1小于第二杠杆臂182的第二长度d2，且第二搭接部1803设于第二杠杆臂182的末端，以使得第一压接部1801的第一转动力臂L1小于第二搭接部1803的第二转动力臂L2(如图4所示)。且本实施例中，第一杠杆臂181与第二杠杆臂182共同绕再扣18的转动轴线R1转动，且第一杠杆臂181与第二杠杆臂182朝同一方向(例如图15中所示的实线箭头所指的方向)凸起，且第一杠杆臂181和第二杠杆臂182凸起的高度不同，如此设置能使再扣18的占用空间和长度最小化，节约安装空间，同时避免干涉到断路器内部的其他构件，另一方面，与第一压接部1801相配合的跳扣17和与第二搭接部1803相配合的锁扣20在左右方向(参考图24，即在X1和X2的方向上)是相错开的，从而利用断路器左右方向上的空间，避免跳扣17和锁扣20的运In this embodiment, as shown in Figure 15, the first length d1 of the first lever arm 181 is smaller than the second length d2 of the second lever arm 182, and the second lap joint 1803 is arranged at the end of the second lever arm 182, so that the first turning force arm L1 of the first crimping portion 1801 is smaller than the second turning force arm L2 of the second lap joint 1803 (as shown in Figure 4). In this embodiment, the first lever arm 181 and the second lever arm 182 rotate together around the rotation axis R1 of the re-lock 18, and the first lever arm 181 and the second lever arm 182 protrude in the same direction (for example, the direction indicated by the solid arrow shown in FIG. 15), and the protrusion heights of the first lever arm 181 and the second lever arm 182 are different. Such a configuration can minimize the occupied space and length of the re-lock 18, save installation space, and avoid interference with other components inside the circuit breaker. On the other hand, the jump buckle 17 matched with the first crimping portion 1801 and the lock buckle 20 matched with the second lap portion 1803 are staggered in the left and right directions (refer to FIG. 24, that is, in the directions of X1 and X2), thereby utilizing the space in the left and right directions of the circuit breaker to avoid the movement of the jump buckle 17 and the lock buckle 20.
动产生干涉，且能够使得脱扣机构设置得更加紧凑合理。在其他实施例中，第一杠杆臂181和第二杠杆臂182之间可以具有小角度的锐角夹角α，二者呈“V”字形，如图25中所示，这样设置虽然也能有效减小再扣18的空间占用，但还是有可能干涉到再扣18下方的部件如触头组件、灭弧栅片等。当然，在不考虑空间占用的情况下，在其他实施例中的第一杠杆臂181和第二杠杆臂182也可以是异向延伸的两共线的杠杆臂(即第一杠杆臂181和第二杠杆臂182位于转动轴线R1的两侧且二者共线)，或者呈钝角夹角的。The first lever arm 181 and the second lever arm 182 can have a small acute angle α between them, and the two are in a "V" shape, as shown in FIG. 25. Although such a setting can effectively reduce the space occupied by the re-clamp 18, it is still possible to interfere with the components below the re-clamp 18, such as the contact assembly, the arc extinguishing grid, etc. Of course, without considering the space occupation, the first lever arm 181 and the second lever arm 182 in other embodiments can also be two colinear lever arms extending in different directions (that is, the first lever arm 181 and the second lever arm 182 are located on both sides of the rotation axis R1 and the two are colinear), or at an obtuse angle.
本实施例中，操作机构和触头组件大致呈上下布置，而脱扣机构大致呈前后布置，从而形成“十” 字形交叉布局，充分利用断路器长度和高度空间。为了在有限的断路器内部空间中尽量设置较长的再扣18，本实施例中再扣18的约束端铰接在跳扣17的后侧的第二侧板23上，锁扣20铰接在跳扣17的前侧的第一侧板22上，如图4所示，再扣18从其约束端至自由端是从后至前伸的，从而尽量利用断路器在前后方向的长度空间，使第二搭接部1803的第二转动力臂L2更大。更进一步地，本实施例中再扣18的约束端铰接在跳扣17的正后侧的第二侧板23上，锁扣20铰接在跳扣17前侧的斜上方的第一侧板22上，因此再扣18还是斜向延伸的，如此设置进一步增大了第二搭接部1803的第二转动力臂L2，另一方面，将锁扣20铰接在跳扣17前侧的斜上方的第一侧板22上，还能避免锁扣20和动触头支撑件16在工作过程中发生干涉，在本实施例中锁扣20和动触头支撑件16是一上一下设置，提高了结构的紧凑性。In this embodiment, the operating mechanism and the contact assembly are generally arranged up and down, and the tripping mechanism is generally arranged front to back, thereby forming a "cross" The cross-shaped layout makes full use of the length and height space of the circuit breaker. In order to set a longer re-lock 18 as much as possible in the limited internal space of the circuit breaker, the restraining end of the re-lock 18 in this embodiment is hinged on the second side plate 23 on the rear side of the jump lock 17, and the lock 20 is hinged on the first side plate 22 on the front side of the jump lock 17. As shown in Figure 4, the re-lock 18 extends from the restraining end to the free end from the back to the front, so as to make full use of the length space of the circuit breaker in the front and rear directions, so that the second turning force arm L2 of the second overlap portion 1803 is larger. Furthermore, in the present embodiment, the restraining end of the re-lock 18 is hinged on the second side plate 23 directly behind the jump buckle 17, and the lock buckle 20 is hinged on the first side plate 22 obliquely above the front side of the jump buckle 17. Therefore, the re-lock 18 still extends obliquely. Such a configuration further increases the second rotating force arm L2 of the second lap joint 1803. On the other hand, hingedly connecting the lock buckle 20 to the first side plate 22 obliquely above the front side of the jump buckle 17 can also avoid interference between the lock buckle 20 and the moving contact support 16 during operation. In the present embodiment, the lock buckle 20 and the moving contact support 16 are arranged one above the other, thereby improving the compactness of the structure.
本实施例中，手柄11和再扣18一上一下可转动连接在该安装基体上，安装基体上设有一用于安装手柄11的盘形连接座2309，再扣18为匹配该盘形连接座2309的弯弧形延伸的摆臂结构，以为该盘形连接座2309让位，如此设置能够提高断路器内部结构的紧凑性。In this embodiment, the handle 11 and the buckle 18 are rotatably connected to the mounting base, and a disc-shaped connecting seat 2309 for mounting the handle 11 is provided on the mounting base. The buckle 18 is a swing arm structure with an arc-shaped extension that matches the disc-shaped connecting seat 2309, so as to make way for the disc-shaped connecting seat 2309. Such an arrangement can improve the compactness of the internal structure of the circuit breaker.
如图13和图16所示，在锁扣20上固定设有一凸台2006，凸台2006用于和再扣18的自由端(即末端)抵接，从而控制第二搭接部1803和第二压接部2001的搭接量，可以理解的是，此搭接量越大，则锁扣20需要较大的脱扣行程才能和再扣18脱离，因此本实施例通过改变凸台2006的凸起高度就能够控制锁扣20的脱扣行程，便于配合实际的产品规格进行调校。As shown in Figures 13 and 16, a boss 2006 is fixedly provided on the lock buckle 20, and the boss 2006 is used to abut against the free end (i.e., the end) of the re-snap 18, so as to control the overlap amount between the second overlap portion 1803 and the second crimping portion 2001. It can be understood that the larger the overlap amount, the larger the disengagement stroke required for the lock buckle 20 to disengage from the re-snap 18. Therefore, this embodiment can control the disengagement stroke of the lock buckle 20 by changing the protruding height of the boss 2006, which is convenient for adjustment to suit actual product specifications.
参阅图2、图19-21，电磁脱扣器4对锁扣20解锁的驱动通过一联动件24实现，电磁脱扣器4和联动件24均设置在第二侧板23背离脱扣机构的一侧，本实施例中该联动件24是一跷跷板结构，联动件24通过其设有的第十三插孔2401可转动插接在第二侧板23的转轴2303上。联动件24上径向向外延伸设有第一拨动部2403和第二拨动部2402，其中第一拨动部2403靠近电磁脱扣器4的推杆(图中未示出)设置。配合参阅图14，锁扣20上设有一凸柱2005，该凸柱2005是穿过第二侧板23延伸至第二拨动部2402附近，电磁脱扣器4的推杆动作时，推动第一拨动部2403致使联动件24转动，进而第二拨动部2402推动凸柱2005致使锁扣20转动解锁。Referring to Fig. 2, Fig. 19-21, the electromagnetic release 4 drives the lock 20 to unlock through a linkage 24. The electromagnetic release 4 and the linkage 24 are both arranged on the side of the second side plate 23 away from the release mechanism. In this embodiment, the linkage 24 is a seesaw structure. The linkage 24 can be rotatably plugged into the rotating shaft 2303 of the second side plate 23 through the thirteenth plug hole 2401 provided thereon. The linkage 24 is provided with a first toggle portion 2403 and a second toggle portion 2402 extending radially outward, wherein the first toggle portion 2403 is arranged close to the push rod (not shown in the figure) of the electromagnetic release 4. 14 , the lock buckle 20 is provided with a boss 2005, which extends through the second side plate 23 to the vicinity of the second toggle portion 2402. When the push rod of the electromagnetic release 4 is actuated, it pushes the first toggle portion 2403 to cause the linkage member 24 to rotate, and then the second toggle portion 2402 pushes the boss 2005 to cause the lock buckle 20 to rotate and unlock.
该联动件24还配设有一复位件，用于在断路器脱扣分闸后驱使联动件24和电磁脱扣器4的推杆复位。如图19所示，本实施例中该复位件是扭簧25，扭簧25安装在联动件24上，扭簧25的第一臂抵接在联动件24所设有的第一抵接面2404上，第二臂靠近设置于动触头支撑件16(具体是靠近设置于动触头支撑件的第二抵接面1603，如图11所示)，当动触头支撑件16转动到分闸位置时，其上的第二抵接面1603推动扭簧25第二臂，使得扭簧25第一臂产生扭转的弹性力推动联动件24转动，进而联动件24推动电磁脱扣器4推杆复位。电磁脱扣器4在其他实施例中也可以是其他的脱扣器类型，如过热脱扣器、欠压脱扣器。The linkage member 24 is also provided with a reset member, which is used to reset the linkage member 24 and the push rod of the electromagnetic release 4 after the circuit breaker is tripped and opened. As shown in FIG19 , in this embodiment, the reset member is a torsion spring 25, which is installed on the linkage member 24. The first arm of the torsion spring 25 abuts against the first abutting surface 2404 provided on the linkage member 24, and the second arm is close to the movable contact support member 16 (specifically, close to the second abutting surface 1603 provided on the movable contact support member, as shown in FIG11 ). When the movable contact support member 16 rotates to the opening position, the second abutting surface 1603 thereon pushes the second arm of the torsion spring 25, so that the first arm of the torsion spring 25 generates a torsion elastic force to push the linkage member 24 to rotate, and then the linkage member 24 pushes the push rod of the electromagnetic release 4 to reset. The electromagnetic release 4 can also be other types of releasers in other embodiments, such as an overheat releaser and an undervoltage releaser.
如图5，手柄11、再扣18和锁扣20分别对应配置有第一弹性件1006、第二弹性件1007和第三弹性件1008。该第一弹性件1006一端作用于安装基座(例如本实施例中作用于第一侧板22或第二侧板23)，另一端作用于手柄11，以为手柄11提供朝分闸方向转动的弹性力；该第二弹性件1007一端作用于安装基座，另一端作用于再扣18，以为再扣18提供弹性力，该弹性力是使再扣18向着对跳扣17进行压扣锁定的锁定位置转动，从而在脱扣机构解扣、再扣18和跳扣17的压扣锁定解除后复位再扣18；该第三弹性件1008一端作用于安装基座，另一端作用于锁扣20，以为锁扣20提供弹性力，该弹性力是使锁扣向着对再扣18进行压扣锁定的锁定位置转动，从而在脱扣机构解扣、锁 扣20和再扣18的压扣配合解除后复位锁扣20。为便于理解，简单的说，以本实施例图18脱扣瞬时的大致状态的特定视图角度而言，第一弹性件1006即是提供使手柄顺时针转动的弹性力，第二弹性件1007即是提供使再扣18顺时针转动的弹性力，第三弹性件1008即是提供使锁扣20逆时针转动的弹性力(图18中以箭头标示了转动方向)。则断路器脱扣分闸时，在第一弹性件1006的弹性力作用下，手柄11转动至分闸位置，且通过第一连杆13和第二连杆14的传力驱动跳扣17向下摆动复位，接着，在第二弹性件1007和第三弹性件1008的作用下再扣18和锁扣20分别复位。本实施例中，为使脱扣机构的结构更为紧凑，再扣18的自由端是设于锁扣20的转动轴线(锁扣转轴2002的轴线)的上方位置，而由于锁扣20处在再扣18的复位路径上，因此锁扣20的第二压接部2001下方设有一让位凹口2007(如图16所示)，以提供再扣18的向下复位的行程空间。如图18所示，在跳扣17和再扣18的下方设有第一挡位部2306，跳扣17和再扣18向下摆动复位时抵触于第一挡位部2306而被限位出一合适的最低极限位置，防止二者向下摆动幅度过大而无法回到压扣配合的状态，本实施例中该第一挡位部2306是第二侧板23的底壁，其他实施例中也可以是额外设置的一挡位件，如一独立设置的挡板。此时，处在脱扣分闸状态下的断路器若手动扳回合闸状态，则跳扣17又会在手柄11的传动作用下向上翘起抵接在再扣18上形成压扣配合，并推动再扣18向上摆动抵接在锁扣20上形成压扣配合，由此完成一个完整的脱扣机构的复位动作。As shown in FIG. 5 , the handle 11 , the buckle 18 and the lock buckle 20 are respectively configured with a first elastic member 1006 , a second elastic member 1007 and a third elastic member 1008 . One end of the first elastic member 1006 acts on the mounting base (for example, in the present embodiment, it acts on the first side plate 22 or the second side plate 23), and the other end acts on the handle 11 to provide an elastic force for the handle 11 to rotate in the direction of opening the switch; one end of the second elastic member 1007 acts on the mounting base, and the other end acts on the re-buckle 18 to provide an elastic force for the re-buckle 18, and the elastic force is to rotate the re-buckle 18 toward the locking position of the press-buckle locking the jump buckle 17, thereby resetting the re-buckle 18 after the tripping mechanism is unbuttoned and the press-buckle locking of the re-buckle 18 and the jump buckle 17 is released; one end of the third elastic member 1008 acts on the mounting base, and the other end acts on the lock buckle 20 to provide an elastic force for the lock buckle 20, and the elastic force is to rotate the lock buckle toward the locking position of the press-buckle locking the re-buckle 18, thereby The lock catch 20 is reset after the press-fit of the buckle 20 and the re-buckle 18 is released. For ease of understanding, in simple terms, in terms of the specific viewing angle of the approximate state of the tripping moment in Figure 18 of this embodiment, the first elastic member 1006 provides an elastic force to rotate the handle clockwise, the second elastic member 1007 provides an elastic force to rotate the re-buckle 18 clockwise, and the third elastic member 1008 provides an elastic force to rotate the lock catch 20 counterclockwise (the direction of rotation is indicated by an arrow in Figure 18). When the circuit breaker is tripped and opened, under the elastic force of the first elastic member 1006, the handle 11 rotates to the opening position, and the trip buckle 17 is driven by the force transmission of the first connecting rod 13 and the second connecting rod 14 to swing downward and reset, and then, under the action of the second elastic member 1007 and the third elastic member 1008, the re-buckle 18 and the lock catch 20 are reset respectively. In this embodiment, in order to make the structure of the tripping mechanism more compact, the free end of the re-snap 18 is arranged above the rotation axis of the lock 20 (the axis of the lock shaft 2002), and because the lock 20 is on the reset path of the re-snap 18, a clearance recess 2007 (as shown in FIG. 16) is arranged below the second crimping portion 2001 of the lock 20 to provide a travel space for the re-snap 18 to reset downward. As shown in FIG. 18, a first stop portion 2306 is arranged below the jumper 17 and the re-snap 18. When the jumper 17 and the re-snap 18 swing downward to reset, they contact the first stop portion 2306 and are limited to a suitable minimum limit position, so as to prevent the two from swinging downward too much and failing to return to the state of press-fitting. In this embodiment, the first stop portion 2306 is the bottom wall of the second side plate 23, and in other embodiments, it can also be an additional stop member, such as an independently arranged baffle. At this time, if the circuit breaker in the tripped and opened state is manually turned back to the closed state, the tripping catch 17 will be tilted upward under the transmission action of the handle 11 and abut against the re-catch 18 to form a press-fit fit, and push the re-catch 18 to swing upward and abut against the lock catch 20 to form a press-fit fit, thereby completing a complete resetting action of the tripping mechanism.
另外，在再扣18上方还设有第二挡位部2307(本实施例中第二挡位部2307是第二侧板23的顶壁，其他实施例中还可以是其他挡位件)，以控制再扣18向上摆动的最高极限位置，保证再扣18能够可靠复位。In addition, a second gear portion 2307 is provided above the re-lock 18 (in this embodiment, the second gear portion 2307 is the top wall of the second side plate 23, and in other embodiments, it can also be other gear members) to control the maximum limit position of the upward swing of the re-lock 18 to ensure that the re-lock 18 can be reliably reset.
本实施例中第一弹性件1006、第二弹性件1007和第三弹性件1008均为扭簧，在其他实施例中也可以是拉簧、压簧等其他弹性件，只是安装和连接部位需要适应性地变更，以能提供同等运动效果的势能。In this embodiment, the first elastic member 1006, the second elastic member 1007 and the third elastic member 1008 are all torsion springs. In other embodiments, they can also be other elastic members such as tension springs and compression springs. Only the installation and connection parts need to be adaptively changed to provide potential energy with the same movement effect.
显然，跳扣17、再扣18和锁扣20的复位需要依照一定的顺序。可以理解的是，假如锁扣20先于再扣18复位，则会对再扣18的复位形成止挡；假如再扣18先于跳扣17复位，则会对跳扣17的复位形成止挡。因此三者需要以“跳扣17、再扣18、锁扣20”的先后顺序依次复位。为了保证此依次复位的可靠进行，参阅图22和图23，本实施例中，再扣18复位运动方向的一端(本实施例即再扣18下端)设有第一限位面1806，该跳扣17设有能够与该第一限位面1806抵接从而阻止再扣18复位的第一止挡部1705，本实施例中该第一止挡部1705是跳扣17上延伸设置的一凸轴，第一限位面1806是配合该第一止挡部1705运动轨迹的曲面，沿着跳扣17的复位方向在该第一限位面1806上设有第一抵接终止端18061，第一止挡部1705越过该第一抵接终止端18061后和第一限位面1806相脱离从而使再扣18进一步复位；类似的，在锁扣20复位运动的方向的一端设有第二限位面2008，再扣18自由端作为与该第二限位面2008抵接从而阻止锁扣20复位的第二止挡部，第二限位面2008是配合该第二止挡部运动轨迹的曲面，沿着再扣18的复位方向在该第二限位面2008上设有第二抵接终止端20081，第二止挡部越过该第二抵接终止端20081后和第二限位面2008相脱离，从而使锁扣20进一步复位。Obviously, the reset of the jump buckle 17, the re-buckle 18 and the lock buckle 20 needs to follow a certain order. It is understandable that if the lock buckle 20 is reset before the re-buckle 18, it will form a stop for the reset of the re-buckle 18; if the re-buckle 18 is reset before the jump buckle 17, it will form a stop for the reset of the jump buckle 17. Therefore, the three need to be reset in the order of "jump buckle 17, re-buckle 18, lock buckle 20". In order to ensure the reliable implementation of this sequential resetting, referring to Figures 22 and 23, in this embodiment, one end of the resetting movement direction of the re-buckle 18 (in this embodiment, the lower end of the re-buckle 18) is provided with a first limiting surface 1806, and the jump buckle 17 is provided with a first stop portion 1705 that can abut against the first limiting surface 1806 to prevent the re-buckle 18 from resetting. In this embodiment, the first stop portion 1705 is a convex shaft extending from the jump buckle 17, and the first limiting surface 1806 is a curved surface that matches the movement trajectory of the first stop portion 1705. A first abutment termination end 18061 is provided on the first limiting surface 1806 along the resetting direction of the jump buckle 17, and the first stop portion 1705 passes over it. The first abutment terminal end 18061 is then disengaged from the first limiting surface 1806, thereby further resetting the buckle 18; similarly, a second limiting surface 2008 is provided at one end in the direction of the resetting movement of the lock buckle 20, and the free end of the re-lock 18 serves as a second stop portion that abuts against the second limiting surface 2008 to prevent the lock buckle 20 from resetting. The second limiting surface 2008 is a curved surface that matches the movement trajectory of the second stop portion, and a second abutment terminal end 20081 is provided on the second limiting surface 2008 along the resetting direction of the re-lock 18. The second stop portion passes over the second abutment terminal end 20081 and is disengaged from the second limiting surface 2008, thereby further resetting the lock buckle 20.
该断路器还包括测试机构，如图19所示，测试机构包括测试按钮41、第一测试弹簧42、第二测试弹簧43、动触头弹簧44、屏蔽罩45(为一带电体)、连接弹簧46、电阻47。测试按钮41装配在外壳体100上，仅能在一定范围内上下运动，第一测试弹簧42是装在第二侧板23上的扭簧， 其一扭臂搭接在测试按钮41上，另一扭臂搭接在屏蔽罩45上，第二测试弹簧43也是装在第二侧板23上的扭簧，其两扭臂搭接在第二侧板23上的不同位置，动触头弹簧44是安装在动触头支撑件16上的扭簧，其一扭臂搭接在动触头301上，另一扭臂搭接在动触头支撑件16上，且处于第二测试弹簧43的一扭臂附近，动触头弹簧44随动触头支撑件16而运动，屏蔽罩45套在电磁脱扣器4上并安装在第二侧板23上，连接弹簧46安装在第二侧板23上，其一扭臂搭接在屏蔽罩45上，另一扭臂将电阻47的引脚压在屏蔽罩45上，电阻47安装在第一侧板22和第二侧板23之间，电阻47另一只引脚固定连接在进接线板上。当断路器处于合闸位置时，动触头弹簧44与第二测试弹簧43接触在一起，此时按动测试按钮41可使测试回路导通，断路器断开；当断路器处于断开位置时，动触头弹簧44和第二测试弹簧43没有电连接，按动测试按钮41也无法使测试回路导通，可以保护电路不损坏。本实施例的测试回路全部使用弹簧连接，不使用信号线锡焊，降低了断线、虚焊风险；测试回路中的零件功能集成：屏蔽罩即用来屏蔽外磁场对电磁脱扣器的影响，又用来当测试回路中的导体，动触头弹簧即用来产生触头压力，又用来当测试回路中的导体，节省了零件数量。The circuit breaker also includes a testing mechanism, as shown in FIG19 , which includes a testing button 41, a first testing spring 42, a second testing spring 43, a moving contact spring 44, a shielding cover 45 (a charged body), a connecting spring 46, and a resistor 47. The testing button 41 is mounted on the outer shell 100 and can only move up and down within a certain range. The first testing spring 42 is a torsion spring mounted on the second side plate 23. One torsion arm is overlapped on the test button 41, and the other torsion arm is overlapped on the shielding cover 45. The second test spring 43 is also a torsion spring installed on the second side plate 23, and its two torsion arms are overlapped at different positions on the second side plate 23. The moving contact spring 44 is a torsion spring installed on the moving contact support 16, and one torsion arm is overlapped on the moving contact 301, and the other torsion arm is overlapped on the moving contact support 16 and is located near a torsion arm of the second test spring 43. The moving contact spring 44 moves with the moving contact support 16. The shielding cover 45 is sleeved on the electromagnetic release 4 and installed on the second side plate 23. The connecting spring 46 is installed on the second side plate 23, and one torsion arm is overlapped on the shielding cover 45, and the other torsion arm presses the pin of the resistor 47 onto the shielding cover 45. The resistor 47 is installed between the first side plate 22 and the second side plate 23, and the other pin of the resistor 47 is fixedly connected to the input terminal board. When the circuit breaker is in the closed position, the moving contact spring 44 is in contact with the second test spring 43. At this time, pressing the test button 41 can turn on the test circuit and disconnect the circuit breaker; when the circuit breaker is in the disconnected position, the moving contact spring 44 and the second test spring 43 are not electrically connected, and pressing the test button 41 cannot turn on the test circuit, which can protect the circuit from damage. The test circuits of this embodiment are all connected by springs, and signal lines are not soldered, which reduces the risk of broken wires and cold soldering; the functions of the parts in the test circuit are integrated: the shielding cover is used to shield the influence of the external magnetic field on the electromagnetic release, and is also used as a conductor in the test circuit. The moving contact spring is used to generate contact pressure and is also used as a conductor in the test circuit, saving the number of parts.
目前，对具有脱扣分闸功能的断路器来说，单一的脱扣分闸功能已越来越不能满足当下的需要，例如需要断路器脱扣分闸时能产生报警功能，则还通常要为断路器配置一个报警装置；若需要断路器同时具备多种脱扣方式，则除断路器自带的脱扣器之外还需要配置其他类型的脱扣器。也就是说，断路器除了本体所具有的功能之外，越来越急切地需要具备模块化改进的能力，然而，断路器本体的内部安装空间是有限的，基于小型化的设计理念也通常不会留出再配置其他模块的安装空间，因此，能够灵活外接附件的断路器就成为了目前断路器结构研究的一个方向。而目前市面上能够外接附件的断路器往往具有结构复杂、灵活性低、通用性差等缺点。At present, for circuit breakers with tripping and opening functions, a single tripping and opening function is increasingly unable to meet current needs. For example, if the circuit breaker needs to generate an alarm function when it trips and opens, an alarm device is usually required for the circuit breaker; if the circuit breaker needs to have multiple tripping modes at the same time, other types of trips are required in addition to the trips that come with the circuit breaker. In other words, in addition to the functions of the circuit breaker body, it is increasingly urgent to have the ability to be modularly improved. However, the internal installation space of the circuit breaker body is limited, and based on the design concept of miniaturization, there is usually no space left for the installation of other modules. Therefore, circuit breakers that can flexibly connect accessories have become a direction of current circuit breaker structure research. However, the circuit breakers that can be connected to accessories on the market often have the disadvantages of complex structure, low flexibility, and poor versatility.
基于此，参阅图26-29所示，本公开的一些实施例还提供了一种断路器，更具体的说是一种根据剩余电流而动作的断路器，包括外壳体100a和导电***3a，该外壳体100a是由上盖1001a和底座1002a组装后固定连接形成的断路器外壳；导电***3a设于该外壳体100a内部，参阅图29，导电***3a包括接线端子300a、动触头301a、静触头302a和导电铜排等，通电后以形成断路器的导电回路，其中动触头301a相对静触头302a具有一活动行程，以实现动触头301a和静触头302a的接触或分离，从而实现断路器的分、合闸。如图27所示，外壳体100a内腔中还设有用于剩余电流测量的零序电流互感器1003a、用于进行灭弧处理的灭弧栅片1004a以及用于实现脱扣分闸的电磁脱扣器4a，外壳体100a上还安装有用于实现断路器漏电功能检测的测试按钮1005a。Based on this, referring to Figures 26-29, some embodiments of the present disclosure further provide a circuit breaker, more specifically, a circuit breaker that operates according to residual current, including an outer shell 100a and a conductive system 3a, wherein the outer shell 100a is a circuit breaker shell formed by assembling and fixing an upper cover 1001a and a base 1002a; the conductive system 3a is arranged inside the outer shell 100a, referring to Figure 29, the conductive system 3a includes a wiring terminal 300a, a moving contact 301a, a stationary contact 302a and a conductive copper bus, etc., to form a conductive circuit of the circuit breaker after power is turned on, wherein the moving contact 301a has a movable stroke relative to the stationary contact 302a to realize the contact or separation of the moving contact 301a and the stationary contact 302a, thereby realizing the opening and closing of the circuit breaker. As shown in Figure 27, the inner cavity of the outer shell 100a is also provided with a zero-sequence current transformer 1003a for residual current measurement, an arc extinguishing grid 1004a for arc extinguishing treatment, and an electromagnetic release 4a for tripping and opening the circuit breaker. A test button 1005a for realizing leakage function detection of the circuit breaker is also installed on the outer shell 100a.
该断路器还包括操作联动组件2a，参阅图29、30，操作联动组件2a包括在左右方向对置的第一侧板22a和第二侧板23a，第一侧板22a和第二侧板23a相对组装连接以构成操作联动组件2a的安装基座，操作联动组件2a还包括安装设置在该安装基座上的操作机构、脱扣机构和外部附件联动机构，其中操作机构包括手柄11a、第一连杆13a、第二连杆14a和第三连杆15a；脱扣机构包括跳扣17a、再扣18a和锁扣20a；外部附件联动机构包括第一联动件26a、第二联动件27a和第三联动件29a。操作机构用于操控动触头301a的分、合闸运动；脱扣机构与操作机构连接，并能够与操作机构联动，用于配合电磁脱扣器4a实现断路器的脱扣分闸。外部附件联动机构则用于断路器和外部附件(包括主动触发类附件和被动带动类附件)的联动。The circuit breaker also includes an operation linkage assembly 2a, referring to Figures 29 and 30, the operation linkage assembly 2a includes a first side plate 22a and a second side plate 23a opposite to each other in the left and right directions, the first side plate 22a and the second side plate 23a are relatively assembled and connected to form a mounting base of the operation linkage assembly 2a, and the operation linkage assembly 2a also includes an operating mechanism, a tripping mechanism and an external accessory linkage mechanism installed on the mounting base, wherein the operating mechanism includes a handle 11a, a first connecting rod 13a, a second connecting rod 14a and a third connecting rod 15a; the tripping mechanism includes a tripping buckle 17a, a re-buckle 18a and a lock buckle 20a; the external accessory linkage mechanism includes a first linkage member 26a, a second linkage member 27a and a third linkage member 29a. The operating mechanism is used to control the opening and closing movement of the moving contact 301a; the tripping mechanism is connected to the operating mechanism and can be linked with the operating mechanism to cooperate with the electromagnetic release 4a to realize the tripping and opening of the circuit breaker. The external accessory linkage mechanism is used for the linkage between the circuit breaker and external accessories (including actively triggered accessories and passively driven accessories).
具体的，手柄11a以及跳扣17a、再扣18a和锁扣20a均为可转动设置在该安装基座上；第一连杆13a一端和手柄11a铰接，另一端和第二连杆14a、第三连杆15a铰接在同一铰点；第二连杆14a 还同时铰接在跳扣17a上；第三连杆15a还同时和动触头支撑件16a铰接；该动触头支撑件16a同时还铰接在外壳体100a上，动触头301a设置在动触头支撑件16a上，并跟随动触头支撑件16a的运动而运动，例如动触头301a可以是固接或铰接在动触头支撑件16a上。在本实施例中，动触头301a铰接在动触头支撑件16a上，动触头301一端通过一弹性件限位在动触头转轴16的限位位置上，在动触头30超行程运动过程中，动触头301的另一端被静触头302限制住时，动触头301的一端在弹性件的作用下离开动触头转轴16的限位位置。Specifically, the handle 11a, the jump buckle 17a, the re-buckle 18a and the lock buckle 20a are all rotatably arranged on the mounting base; one end of the first connecting rod 13a is hinged to the handle 11a, and the other end is hinged to the second connecting rod 14a and the third connecting rod 15a at the same hinge point; the second connecting rod 14a It is also hinged on the jumper 17a; the third connecting rod 15a is also hinged on the moving contact support 16a; the moving contact support 16a is also hinged on the outer shell 100a, and the moving contact 301a is arranged on the moving contact support 16a, and moves with the movement of the moving contact support 16a, for example, the moving contact 301a can be fixed or hinged on the moving contact support 16a. In this embodiment, the moving contact 301a is hinged on the moving contact support 16a, and one end of the moving contact 301 is limited to the limit position of the moving contact shaft 16 by an elastic member. During the over-travel movement of the moving contact 30, when the other end of the moving contact 301 is limited by the static contact 302, one end of the moving contact 301 leaves the limit position of the moving contact shaft 16 under the action of the elastic member.
脱扣机构中，锁扣20a压扣配合于再扣18a，再扣18a又压扣配合于跳扣17a，以限制跳扣17a的转动。手动分、合闸时，跳扣17a处在和再扣18a、锁扣20a受力平衡的锁定状态。而由于跳扣17a被锁定，因此手动分、合闸时，第二连杆14a将以其与跳扣17a的铰接点A为支点转动，从而带动第三连杆15a、动触头支撑件16a以及动触头301a活动，跳扣17a不会转动。当锁扣20a解锁时，此受力平衡状态就会被打破，从而造成脱扣分闸，跳扣17a解锁(解扣)，快速地带动第二连杆14a以跳扣17a和安装基座的铰接点B为转轴转动，进而带动动触头301a脱扣分闸，快速实现分断工作。本实施例的脱扣机构中，除了跳扣和锁扣，还加入了再扣18a，使得锁扣20a先锁定再扣18a，再扣18a再锁定跳扣17a，换言之，跳扣17a是先施力于再扣18a，再扣18a再施力于锁扣20a。因此通过再扣18a间接加长了跳扣17a对锁扣20a施力的力臂，在跳扣17a扭矩不变的前提下，跳扣17a作用在锁扣20a上的力就更小，要解锁锁扣20a所需的电磁脱扣器4a的解扣力也变小，确保在发生漏电故障时，触头能够自动断开。In the tripping mechanism, the lock buckle 20a is pressed and matched with the re-buckle 18a, and the re-buckle 18a is pressed and matched with the jump buckle 17a to limit the rotation of the jump buckle 17a. When the switch is manually opened and closed, the jump buckle 17a is in a locked state with a force balance with the re-buckle 18a and the lock buckle 20a. Since the jump buckle 17a is locked, when the switch is manually opened and closed, the second connecting rod 14a will rotate with the hinge point A between it and the jump buckle 17a as a fulcrum, thereby driving the third connecting rod 15a, the moving contact support 16a and the moving contact 301a to move, and the jump buckle 17a will not rotate. When the lock buckle 20a is unlocked, this force balance state will be broken, resulting in the tripping and opening of the switch, and the jump buckle 17a is unlocked (unbuckled), quickly driving the second connecting rod 14a to rotate with the hinge point B between the jump buckle 17a and the mounting base as the rotating axis, and then driving the moving contact 301a to trip and open the switch, and quickly realizing the disconnection work. In the tripping mechanism of this embodiment, in addition to the jumper and the locker, a re-lock 18a is also added, so that the locker 20a first locks the re-lock 18a, and the re-lock 18a then locks the jumper 17a. In other words, the jumper 17a first applies force to the re-lock 18a, and the re-lock 18a then applies force to the locker 20a. Therefore, the force arm of the jumper 17a exerting force on the locker 20a is indirectly lengthened by the re-lock 18a. Under the premise that the torque of the jumper 17a remains unchanged, the force of the jumper 17a acting on the locker 20a is smaller, and the tripping force of the electromagnetic release 4a required to unlock the locker 20a is also reduced, ensuring that the contacts can be automatically disconnected when a leakage fault occurs.
操作机构和脱扣机构均设置在第一侧板22a和第二侧板23a之间，外部附件联动机构则安装设置在第一侧板22a的外侧面，使得外部附件联动机构与操作机构和脱扣机构处于不同的安装层级，提高断路器内部空间的利用率和结构的紧凑性。且第一侧板22a隔开外部附件联动机构，使得功能更为独立的外部附件联动机构能够更少地干涉到操作机构和脱扣机构。The operating mechanism and the tripping mechanism are both arranged between the first side plate 22a and the second side plate 23a, and the external accessory linkage mechanism is installed on the outer side of the first side plate 22a, so that the external accessory linkage mechanism and the operating mechanism and the tripping mechanism are at different installation levels, thereby improving the utilization rate of the internal space of the circuit breaker and the compactness of the structure. In addition, the first side plate 22a separates the external accessory linkage mechanism, so that the external accessory linkage mechanism with more independent functions can interfere less with the operating mechanism and the tripping mechanism.
参阅图30-36，第一联动件26a可转动设置在安装基座上，且和跳扣17a同轴联动地连接。本实施例中第一联动件26a是一半圆形板状件，第一联动件26a以其设有的中心孔2601a铰接在第一侧板22a所设有的转轴2206a上，该转轴2206a和跳扣17a的转点B同轴线；第一联动件26a上还设有联接孔2602a，一联锁轴穿过该联接孔2602a***配合于跳扣17a，从而通过该联锁轴实现跳扣17a和第一联动件26a的同步联动。在其他实施例中，也可以采用其他的联接方式来连接跳扣17a和第一联动件26a，例如将二者固连在同一支转轴上。第一联动件26a用于在跳扣17a解扣运动时拨动第二联动件27a，因此其他实施例中该第一联动件26a也可以是一摆臂。Referring to Figures 30-36, the first linkage member 26a is rotatably arranged on the mounting base and is coaxially linked with the jumper 17a. In this embodiment, the first linkage member 26a is a semicircular plate-shaped member, and the first linkage member 26a is hinged on the rotating shaft 2206a provided on the first side plate 22a with its central hole 2601a, and the rotating shaft 2206a is coaxial with the turning point B of the jumper 17a; the first linkage member 26a is also provided with a connecting hole 2602a, and an interlocking shaft passes through the connecting hole 2602a and is inserted into the jumper 17a, so that the jumper 17a and the first linkage member 26a are synchronized through the interlocking shaft. In other embodiments, other connection methods can also be used to connect the jumper 17a and the first linkage member 26a, for example, the two are fixedly connected to the same rotating shaft. The first linkage member 26a is used to move the second linkage member 27a when the jumper 17a is unfastened, so in other embodiments, the first linkage member 26a can also be a swing arm.
第二联动件27a是一可转动连接在安装基座上的摆臂，其转动中心为点C。具体的，第二联动件27a以其转轴2701a铰接在第一侧板22a的孔2207a上，第二联动件27a的自由端靠近于第一联动件26a设置，并能接受第一联动件26a的拨动。第一弹性件28a一端作用于安装基座，另一端作用于第二联动件27a以对第二联动件27a提供朝靠近所述第一联动件26a方向摆动的复位弹力。本实施例中该第一弹性件28a是扭簧。在第二联动件27a朝靠近所述第一联动件26a运动方向的一侧固定设有限位柱33a，以限定第二联动件27a朝靠近所述第一联动件26a方向摆动的极限位置。在其他实施例中第二联动件27a也可设置成上下直动式结构。The second linkage member 27a is a swing arm rotatably connected to the mounting base, and its rotation center is point C. Specifically, the second linkage member 27a is hinged to the hole 2207a of the first side plate 22a with its rotation axis 2701a, and the free end of the second linkage member 27a is arranged close to the first linkage member 26a and can accept the movement of the first linkage member 26a. One end of the first elastic member 28a acts on the mounting base, and the other end acts on the second linkage member 27a to provide a reset elastic force for the second linkage member 27a to swing toward the direction close to the first linkage member 26a. In this embodiment, the first elastic member 28a is a torsion spring. A limit column 33a is fixedly provided on the side of the second linkage member 27a that is close to the movement direction of the first linkage member 26a to limit the extreme position of the second linkage member 27a swinging toward the direction close to the first linkage member 26a. In other embodiments, the second linkage member 27a can also be set as an up and down direct-acting structure.
指示件31a是一杠杆结构，其长度中部位置设有可转动连接在第一侧板22a的孔2209a中的转轴3101a，指示件31a一端通过U型卡槽3102a和动触头支撑件16a铰接，在动触头支撑件16a转 动时驱动指示件31a另一端偏转到不同位置以指示断路器的状态。The indicator 31a is a lever structure, and a rotating shaft 3101a is provided at the middle of its length, which can be rotatably connected to the hole 2209a of the first side plate 22a. One end of the indicator 31a is hinged to the moving contact support 16a through a U-shaped slot 3102a. When the circuit breaker is actuated, the other end of the indicator 31a is driven to deflect to a different position to indicate the state of the circuit breaker.
第三联动件29a也是一摆臂结构，该第三联动件29a的第一端铰接于动触头支撑件16a，具体的，第三联动件29a的第一端设有的孔2901a，该孔2901a和转轴16a上设有的一凸柱(未示出)转动连接。第三联动件29a设于第二联动件27a的一侧，并能够接受第二联动件27a的推动而产生动作，锁扣20a设有一穿过第二侧板22a凸伸至第三联动件29a背离第二联动件27a一侧的拨动部201a。The third linkage 29a is also a swing arm structure, and the first end of the third linkage 29a is hinged to the moving contact support 16a. Specifically, the first end of the third linkage 29a is provided with a hole 2901a, and the hole 2901a is rotatably connected to a protrusion (not shown) provided on the rotating shaft 16a. The third linkage 29a is provided on one side of the second linkage 27a, and can be pushed by the second linkage 27a to generate an action. The lock buckle 20a is provided with a toggle portion 201a that passes through the second side plate 22a and protrudes to the side of the third linkage 29a away from the second linkage 27a.
第二联动件27a上设有一耦合连接部，用于耦合连接外部附件。此外部附件是指设于断路器本体外的能够和断路器产生连带反应的部件，在本实施例中主要为两大类，一类为被动触发类附件，例如辅助触点装置、报警触点装置等，另一类为主动带动类附件，例如欠压脱扣器、过压脱扣器、分励脱扣器等。此外部附件设有一耦合配合部，该耦合配合部与第二联动件27a的耦合连接部耦合连接，使得第二联动件27a和外部附件的其中一个能够通过耦合配合部和耦合连接部的配合带动另一个产生动作。如图37，示出了一外部附件500a和第二联动件27a耦合连接的示意图，本实施例中，该耦合连接部是设于第二联动件27a上的插孔2705a，耦合配合部是***到插孔2705a中的插杆600a，当然其他实施例中也可以是反过来耦合配合部是插孔，而耦合连接部是***到插孔中的插杆。本实施例中插孔2705a的孔径大于插杆600a的杆径，使得插孔2705a能够适配更多尺寸规格的插杆，提高适用性。The second linkage member 27a is provided with a coupling connection portion for coupling and connecting an external accessory. This external accessory refers to a component that is provided outside the circuit breaker body and can produce a joint reaction with the circuit breaker. In this embodiment, there are mainly two categories, one is a passive trigger type accessory, such as an auxiliary contact device, an alarm contact device, etc., and the other is an active driving type accessory, such as an undervoltage release, an overvoltage release, a shunt release, etc. This external accessory is provided with a coupling matching portion, which is coupled and connected with the coupling connection portion of the second linkage member 27a, so that one of the second linkage member 27a and the external accessory can drive the other to produce an action through the cooperation of the coupling matching portion and the coupling connection portion. As shown in Figure 37, a schematic diagram of an external accessory 500a coupled to a second linkage member 27a is shown. In this embodiment, the coupling connection portion is a socket 2705a provided on the second linkage member 27a, and the coupling matching portion is a plug 600a inserted into the socket 2705a. Of course, in other embodiments, the coupling matching portion can also be a socket, and the coupling connection portion can be a plug inserted into the socket. In this embodiment, the hole diameter of the socket 2705a is larger than the rod diameter of the plug rod 600a, so that the socket 2705a can be adapted to plug rods of more sizes and specifications, thereby improving applicability.
接下来说明该外部附件联动机构的原理，参阅图31和图38，若该外部附件500a是被动触发类附件，例如是报警触点装置，当断路器跳扣17a解扣时，第一联动件26a随跳扣17a运动而运动，并进一步推动第二联动件27a摆动，接着第二联动件27a通过插孔2705a和插杆600a的插接配合推动插杆600a运动，从而触发该报警触点装置的触点闭合产生报警信号。参阅图31和图39，若该外部附件500a是主动带动类附件，如欠压脱扣器，该欠压脱扣器检测到欠压时，插杆600a主动动作，通过插孔2705a和插杆600a的插接配合推动第二联动件27a运动，第二联动件27a进一步推动第三联动件29a，而第三联动件29a拨动锁扣20a的拨动部201a使得断路器本体发生脱扣分闸。本实施例通过设置外部附件联动机构，使得断路器能够模块化外接外部附件，并且，本实施例的一套外部附件联动机构可以选配多种不同的外部附件，极大提高了断路器安装外部附件的灵活性。Next, the principle of the external accessory linkage mechanism is explained. Please refer to Figures 31 and 38. If the external accessory 500a is a passively triggered accessory, such as an alarm contact device, when the circuit breaker trips 17a, the first linkage member 26a moves with the trip 17a, and further pushes the second linkage member 27a to swing. Then the second linkage member 27a pushes the plug rod 600a to move through the plug-in cooperation of the socket 2705a and the plug rod 600a, thereby triggering the contact closure of the alarm contact device to generate an alarm signal. Referring to FIG. 31 and FIG. 39 , if the external accessory 500a is an actively driven accessory, such as an undervoltage release, when the undervoltage release detects undervoltage, the plug rod 600a actively moves, and the plug-in cooperation between the plug hole 2705a and the plug rod 600a pushes the second linkage member 27a to move, and the second linkage member 27a further pushes the third linkage member 29a, and the third linkage member 29a toggles the toggle portion 201a of the lock 20a to trip the circuit breaker body. This embodiment sets an external accessory linkage mechanism, so that the circuit breaker can be modularly connected to external accessories, and a set of external accessory linkage mechanisms in this embodiment can be equipped with a variety of different external accessories, which greatly improves the flexibility of installing external accessories on the circuit breaker.
如图31、34、35，在第二联动件27a和第三联动件29a的相对侧各自设有互相朝对方凸伸靠近的第一凸伸部2704a和第二凸伸部2904a，通过第一凸伸部2704a和第二凸伸部2904a的相互靠近，提高第二联动件26a和第三联动件29a推抵联动时的响应速度。As shown in Figures 31, 34 and 35, a first protruding portion 2704a and a second protruding portion 2904a that protrude toward each other are respectively provided on opposite sides of the second linkage member 27a and the third linkage member 29a. By bringing the first protruding portion 2704a and the second protruding portion 2904a closer to each other, the response speed of the second linkage member 26a and the third linkage member 29a when pushing and linking is improved.
除了插孔和插杆的配合，在其他实施例中耦合连接部和耦合配合部也可以采用其他的耦合连接结构，如磁吸连接、铰接、可拆卸固定连接。In addition to the matching of the jack and the insertion rod, in other embodiments, the coupling connection portion and the coupling matching portion may also adopt other coupling connection structures, such as magnetic connection, hinged connection, and detachable fixed connection.
继续参阅图31、34、35，第三联动件29a的第二端2902a在第二弹性件30a的作用下朝远离拨动部201a的方向抵向指示件31a的转轴3101a，以免第三联动件29a误触动锁扣20a。第三联动件29a的第二端2902a在其他实施例中也可以不是抵向转轴3101a，只要设有一固定接触点供第三联动件29a的第二端抵接即可，例如该固定接触点可以是从第二侧板22a上延伸凸出设置。且本实施例中，第三联动件29a的第一端是铰接于动触头支撑件16a，在第三联动件29a的第二端2902a抵接于该固定接触点的情况下，如图40所示，本实施中，动触头支撑件16a转动至分闸位置时能够带动第三联动件29a的第一端朝远离第二联动件27a的方向偏转，以脱离第二联动件27a的行程范围。这时第二联动件27a不论如何动作都不能接触到第三联动件29a，以保证断路器能够顺利合闸(在产 品合闸过程中，若外部附件的插杆600a是静止的，则第二联动件27a静止在限位柱33a处，第三联动件29a随着动触头支撑件16a运动到靠近第二联动件27a的位置。外部附件动作时，插杆600a推动第二联动件27a，进而第二联动件27a通过推动第三联动件29a，从而推动锁扣解锁，产品动作分闸；若外部附件的插杆600a是随着附件合闸而运动的，则第二联动件27a会跟着插杆600a运动到限位柱33a处，在此过程中第三联动件28a也会随着动触头支撑件16a运动，且始终与第二联动件27a保持一定间隙，确保断路器与附件的合闸顺利进行)。Continuing to refer to Figures 31, 34, and 35, the second end 2902a of the third linkage member 29a abuts against the rotating shaft 3101a of the indicator member 31a in a direction away from the toggle portion 201a under the action of the second elastic member 30a, so as to prevent the third linkage member 29a from accidentally touching the lock buckle 20a. In other embodiments, the second end 2902a of the third linkage member 29a may not abut against the rotating shaft 3101a, as long as a fixed contact point is provided for the second end of the third linkage member 29a to abut against, for example, the fixed contact point may be extended and protruded from the second side plate 22a. In this embodiment, the first end of the third linkage member 29a is hinged to the moving contact support member 16a. When the second end 2902a of the third linkage member 29a abuts against the fixed contact point, as shown in Figure 40, in this embodiment, when the moving contact support member 16a rotates to the opening position, it can drive the first end of the third linkage member 29a to deflect in a direction away from the second linkage member 27a to escape from the travel range of the second linkage member 27a. At this time, the second linkage member 27a cannot contact the third linkage member 29a no matter how it moves, so as to ensure that the circuit breaker can be closed smoothly (in production During the closing process of the product, if the plug rod 600a of the external accessory is stationary, the second linkage member 27a is stationary at the limit column 33a, and the third linkage member 29a moves with the moving contact support 16a to a position close to the second linkage member 27a. When the external accessory is actuated, the plug rod 600a pushes the second linkage member 27a, and then the second linkage member 27a pushes the third linkage member 29a to push the lock to unlock, and the product is actuated to open the circuit; if the plug rod 600a of the external accessory moves with the closing of the accessory, the second linkage member 27a will follow the plug rod 600a to the limit column 33a. During this process, the third linkage member 28a will also move with the moving contact support 16a, and always maintain a certain gap with the second linkage member 27a to ensure the smooth closing of the circuit breaker and the accessory).
本实施例中，如图33和图34所示，第一凸伸部2704a和第二凸伸部2904a均具有前端收缩的尖角形状，从而第三联动件29a朝远离第二联动件27a的方向偏转产生角度发生变化时第一凸伸部2704a和第二凸伸部2904a能够快速错开，第二凸伸部2904a可以更快地脱离第一凸伸部2704a的行程范围，更能保住二者不会再接触。In this embodiment, as shown in Figures 33 and 34, the first protrusion 2704a and the second protrusion 2904a both have a pointed shape with a contracted front end, so that when the third linkage member 29a deflects in a direction away from the second linkage member 27a to cause a change in angle, the first protrusion 2704a and the second protrusion 2904a can be quickly offset, and the second protrusion 2904a can be more quickly out of the travel range of the first protrusion 2704a, and the two can be prevented from contacting each other again.
第一弹性件28a和第二弹性件30a在本实施例中是扭簧，但在其他实施例中也可以是拉簧、压簧等其他弹性件，只是安装方式需要做适应性变更，以确保具有同等运动效果的势能。The first elastic member 28a and the second elastic member 30a are torsion springs in the present embodiment, but in other embodiments they may be tension springs, compression springs or other elastic members, but the installation method needs to be adaptively changed to ensure potential energy with the same motion effect.
本公开实施例还提供一种组合开关电器，包括上述实施例中描述的断路器，以及与该断路器耦合连接的外部附件。由于本实施例采用了上述实施例中的断路器，因此具有上述实施例中的断路器的同等技术效果。耦合连接的外部附件包括而不限于：辅助触点装置、报警触点装置、欠压脱扣器、过压脱扣器、分励脱扣器。The disclosed embodiment also provides a combined switch electrical appliance, including the circuit breaker described in the above embodiment, and external accessories coupled to the circuit breaker. Since the present embodiment adopts the circuit breaker in the above embodiment, it has the same technical effect as the circuit breaker in the above embodiment. The coupled external accessories include but are not limited to: auxiliary contact device, alarm contact device, undervoltage release, overvoltage release, shunt release.
尽管结合优选实施方案具体展示和介绍了本公开，但所属领域的技术人员应该明白，在不脱离所附权利要求书所限定的本公开的精神和范围内，在形式上和细节上对本公开做出的各种变化，均落入本公开的保护范围。 Although the present disclosure has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and details made to the present disclosure without departing from the spirit and scope of the present disclosure as defined in the appended claims are within the scope of protection of the present disclosure.

Claims (16)

  1. 断路器的脱扣机构，包括可转动设置的跳扣、再扣和锁扣，所述再扣是省力杠杆结构，包括第一杠杆臂和第二杠杆臂，所述跳扣上设有第一搭接部，对应的在所述第一杠杆臂上设有第一压接部，所述第二杠杆臂上设有第二搭接部，对应的在所述锁扣上设有第二压接部；The tripping mechanism of the circuit breaker comprises a rotatably arranged tripping catch, a re-catch and a lock catch, wherein the re-catch is a labor-saving lever structure, comprising a first lever arm and a second lever arm, the tripping catch is provided with a first lap joint, and the first lever arm is provided with a first crimping portion correspondingly, the second lever arm is provided with a second lap joint, and the lock catch is provided with a second crimping portion correspondingly;
    所述跳扣、再扣和锁扣三者的相对位置被配置为：通过彼此间的相对转动，能够使得第二压接部压扣配合于第二搭接部的同时，第一压接部压扣配合于第一搭接部，从而限制跳扣的转动，其中，所述第一压接部的第一转动力臂小于所述第二搭接部的第二转动力臂。The relative positions of the jump buckle, the re-buckle and the lock buckle are configured as follows: through relative rotation between each other, the second crimping part can be pressed and fitted with the second overlapping part while the first crimping part is pressed and fitted with the first overlapping part, thereby limiting the rotation of the jump buckle, wherein the first turning force arm of the first crimping part is smaller than the second turning force arm of the second overlapping part.
  2. 根据权利要求1所述的断路器的脱扣机构，其中，所述第一杠杆臂和第二杠杆臂共同绕所述再扣的转动轴线转动，且所述第一杠杆臂和所述第二杠杆臂朝同一方向凸起，且所述第一杠杆臂和所述第二杠杆臂凸起的高度不同，或者所述第一杠杆臂和所述第二杠杆臂具有夹角，该夹角为锐角，使二者呈V字形。The tripping mechanism of the circuit breaker according to claim 1, wherein the first lever arm and the second lever arm rotate together around the rotation axis of the re-release, and the first lever arm and the second lever arm protrude in the same direction, and the protrusion heights of the first lever arm and the second lever arm are different, or the first lever arm and the second lever arm have an angle, and the angle is an acute angle, so that the two are in a V shape.
  3. 根据权利要求2所述的断路器的脱扣机构，其中，所述再扣和锁扣的转动中心分别设于所述跳扣的转动中心的两侧位置，以使所述第二杠杆臂是从所述跳扣转动中心的一侧延长至另一侧。The tripping mechanism of the circuit breaker according to claim 2, wherein the rotation centers of the re-release and the lock are respectively arranged on both sides of the rotation center of the tripping release, so that the second lever arm extends from one side of the rotation center of the tripping release to the other side.
  4. 根据权利要求1所述的断路器的脱扣机构，其中，所述跳扣是摆臂结构，所述第一搭接部设于所述跳扣的末端，所述第二搭接部设于所述第二杠杆臂的末端。The tripping mechanism of the circuit breaker according to claim 1, wherein the tripping latch is a swing arm structure, the first overlapping portion is provided at an end of the tripping latch, and the second overlapping portion is provided at an end of the second lever arm.
  5. 根据权利要求4所述的断路器的脱扣机构，其中，所述锁扣上设有一和所述第二杠杆臂末端抵接的凸台，通过改变所述凸台的凸起高度以控制第二搭接部和所述第二压接部的搭接量。The tripping mechanism of the circuit breaker according to claim 4, wherein the lock buckle is provided with a boss abutting against the end of the second lever arm, and the overlap amount of the second overlapping portion and the second crimping portion is controlled by changing the protruding height of the boss.
  6. 一种断路器，包括操作机构以及动触头和静触头组成的触头组件，所述动触头和操作机构联动连接并相对所述静触头具有实现断路器导通或断开的活动行程，还包括用于实现断路器脱扣分闸的脱扣机构和用于触发所述脱扣机构解扣的脱扣器，其中，所述脱扣机构是权利要求1-5中任一项所述的断路器的脱扣机构，所述跳扣和操作机构联动连接，所述脱扣器传动连接于所述锁扣。A circuit breaker comprises an operating mechanism and a contact assembly consisting of a moving contact and a stationary contact, wherein the moving contact and the operating mechanism are linked together and have a movable stroke relative to the stationary contact for realizing the conduction or disconnection of the circuit breaker, and further comprises a tripping mechanism for realizing the tripping and opening of the circuit breaker and a tripper for triggering the tripping mechanism to trip, wherein the tripping mechanism is the tripping mechanism of the circuit breaker according to any one of claims 1 to 5, the tripper is linked together with the operating mechanism, and the tripper is transmission-connected to the lock.
  7. 根据权利要求6所述的断路器，其中，以断路器的长度方向为前后方向，以断路器的高度方向为上下方向，所述操作机构和触头组件大致呈上下布置，所述断路器的脱扣机构大致呈前后布置，从而形成十字形交叉布局。According to the circuit breaker of claim 6, wherein, with the length direction of the circuit breaker as the front-to-back direction and the height direction of the circuit breaker as the up-down direction, the operating mechanism and the contact assembly are roughly arranged up and down, and the tripping mechanism of the circuit breaker is roughly arranged front-to-back, thereby forming a cross-shaped cross layout.
  8. 根据权利要求7所述的断路器，其中，所述再扣铰接在所述跳扣的后侧，所述锁扣铰接在所述跳扣的前侧，以使得所述第二杠杆臂是从后至前伸的。The circuit breaker according to claim 7, wherein the re-latch is hinged on the rear side of the trip latch, and the lock latch is hinged on the front side of the trip latch, so that the second lever arm extends from rear to front.
  9. 根据权利要求8所述的断路器，还包括动触头支撑件，所述动触头安装设置在所述动触头支撑件上并随动于所述动触头支撑件，所述再扣铰接在所述跳扣的正后侧，所述锁扣铰接在所述跳扣前侧的斜上方，以使第二杠杆臂呈斜向上延伸，且所述锁扣和动触头支撑件形成一上一下布置。The circuit breaker according to claim 8 further includes a moving contact support, the moving contact is mounted on the moving contact support and moves with the moving contact support, the re-catch is hinged on the rear side of the trip catch, and the lock catch is hinged on the oblique upper side of the front side of the trip catch so that the second lever arm extends obliquely upward, and the lock catch and the moving contact support form an upper and lower arrangement.
  10. 根据权利要求7所述的断路器，其中，所述操作机构包括可转动设于所述再扣上方的手柄，还包括一用于安装所述手柄的盘形连接座，所述再扣是匹配该盘形连接座外形的弯弧形延伸结构。The circuit breaker according to claim 7, wherein the operating mechanism includes a handle rotatably arranged above the re-latch, and also includes a disc-shaped connecting seat for mounting the handle, and the re-latch is an arc-shaped extension structure matching the shape of the disc-shaped connecting seat.
  11. 根据权利要求6所述的断路器，其中，以断路器的宽度方向为左右方向，所述再扣的第一压接部和第二搭接部是在左右方向相错开的，且与所述第一压接部相配合的所述跳扣和与所述第二搭接部相配合的所述锁扣在左右方向也是相错开的、不处在一个左右方向上的平面内。The circuit breaker according to claim 6, wherein, with the width direction of the circuit breaker as the left-right direction, the first crimping portion and the second overlapping portion of the re-fastening are staggered in the left-right direction, and the jump buckle matched with the first crimping portion and the lock buckle matched with the second overlapping portion are also staggered in the left-right direction and are not in a plane in the left-right direction.
  12. 根据权利要求6所述的断路器，其中，所述操作机构包括可转动设置的手柄，所述手柄分别具 有分闸和合闸的两个停靠位置，所述手柄通过连杆机构同时和所述跳扣以及动触头联动连接，所述连杆机构传力于所述跳扣以使所述手柄从分闸向合闸位置摆动时拉动所述跳扣的所述第一搭接部抵向所述第一压接部、以及间接地推动第二搭接部抵向第二压接部，实现脱扣机构的锁定。The circuit breaker according to claim 6, wherein the operating mechanism comprises a rotatable handle, the handles respectively having There are two parking positions of opening and closing. The handle is linked to the trip latch and the moving contact through a connecting rod mechanism. The connecting rod mechanism transmits force to the trip latch so that when the handle swings from the opening position to the closing position, the first overlapping part of the trip latch is pulled against the first crimping part, and the second overlapping part is indirectly pushed against the second crimping part, thereby locking the trip mechanism.
  13. 根据权利要求12所述的断路器，其中，所述手柄、再扣和锁扣分别对应配置有第一弹性件、第二弹性件和第三弹性件，所述第一弹性件用于为所述手柄提供朝分闸方向转动的弹性力、并间接为所述跳扣提供解扣后复位的弹性力，所述第二弹性件用于为所述再扣提供解扣后复位的弹性力，所述第三弹性件用于为所述锁扣提供解扣后复位的弹性力。The circuit breaker according to claim 12, wherein the handle, the re-latch and the lock are respectively configured with a first elastic member, a second elastic member and a third elastic member, the first elastic member is used to provide an elastic force for the handle to rotate in the opening direction and indirectly provide an elastic force for the tripping latch to reset after being unlatched, the second elastic member is used to provide an elastic force for the re-latch to reset after being unlatched, and the third elastic member is used to provide an elastic force for the lock to reset after being unlatched.
  14. 根据权利要求13所述的断路器，其中，以断路器的高度方向为上下方向，所述第二搭接部设于所述锁扣转动轴线的上方，所述第二压接部下方设有一让位凹口以提供所述再扣复位的行程空间；和/或者还包括第一挡位部，所述第一挡位部固定设于所述跳扣和再扣的复位路径上以限位所述跳扣和再扣。The circuit breaker according to claim 13, wherein, with the height direction of the circuit breaker as the up-down direction, the second overlapping portion is arranged above the rotation axis of the lock, and a clearance recess is provided below the second crimping portion to provide a travel space for the re-locking and resetting; and/or it also includes a first gear portion, which is fixedly arranged on the resetting path of the tripping and re-locking to limit the tripping and re-locking.
  15. 根据权利要求13所述的断路器，其中，所述跳扣能够先于所述再扣复位，所述再扣能够先于所述锁扣复位。The circuit breaker according to claim 13, wherein the trip button can be reset before the re-click, and the re-click can be reset before the lock button.
  16. 根据权利要求15所述的断路器，其中，所述再扣复位运动方向的一端设有第一限位面，所述跳扣设有能够与所述第一限位面抵接从而阻止所述再扣复位的第一止挡部，沿着所述跳扣的复位方向在所述第一限位面上设有第一抵接终止端，使得所述第一止挡部越过所述第一抵接终止端后和所述第一限位面相脱离从而解放所述再扣的复位行程，使得所述跳扣能够先于所述再扣复位；和/或者所述锁扣复位运动方向的一端设有第二限位面，所述再扣设有能够与所述第二限位面抵接从而阻止所述锁扣复位的第二止挡部，沿着所述再扣的复位方向在所述第二限位面上设有第二抵接终止端，使得所述第二止挡部越过所述第二抵接终止端后和第二限位面相脱离从而解放所述锁扣的复位行程，使得所述再扣能够先于所述锁扣复位。 According to the circuit breaker of claim 15, wherein a first limiting surface is provided at one end of the resetting movement direction of the re-snap, the jump buckle is provided with a first stop portion that can abut against the first limiting surface to prevent the re-snap from being reset, and a first abutting termination end is provided on the first limiting surface along the resetting direction of the jump buckle, so that the first stop portion is separated from the first limiting surface after passing over the first abutting termination end, thereby releasing the resetting stroke of the re-snap, so that the jump buckle can be reset before the re-snap; and/or a second limiting surface is provided at one end of the resetting movement direction of the lock buckle, the re-snap is provided with a second stop portion that can abut against the second limiting surface to prevent the lock buckle from being reset, and a second abutting termination end is provided on the second limiting surface along the resetting direction of the re-snap, so that the second stop portion is separated from the second limiting surface after passing over the second abutting termination end, thereby releasing the resetting stroke of the lock buckle, so that the re-snap can be reset before the lock buckle.
PCT/CN2023/120109 2022-09-29 2023-09-20 Tripping mechanism of circuit breaker, and circuit breaker WO2024067301A1 (en)

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CN202211200055.8 2022-09-29
CN202211200068.5 2022-09-29
CN202211200068.5A CN115513014A (en) 2022-09-29 2022-09-29 Tripping mechanism of circuit breaker and circuit breaker
CN202211200055.8A CN115472471A (en) 2022-09-29 2022-09-29 Circuit breaker and combined switch electrical apparatus

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040036562A1 (en) * 2002-08-21 2004-02-26 Siebels Randall L. Latch for an electrical device
CN201069745Y (en) * 2007-06-07 2008-06-04 浙江正泰电器股份有限公司 An operating mechanism of small residual current action breaker
CN201435358Y (en) * 2009-04-20 2010-03-31 浙江正泰电器股份有限公司 Operating mechanism of small residual current operated circuit breaker
CN201838528U (en) * 2010-09-16 2011-05-18 方华朋 Minitype circuit breaker
CN115472471A (en) * 2022-09-29 2022-12-13 厦门宏发开关设备有限公司 Circuit breaker and combined switch electrical apparatus
CN115513014A (en) * 2022-09-29 2022-12-23 厦门宏发开关设备有限公司 Tripping mechanism of circuit breaker and circuit breaker
CN218568759U (en) * 2022-09-29 2023-03-03 厦门宏发开关设备有限公司 Tripping mechanism of circuit breaker and circuit breaker

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040036562A1 (en) * 2002-08-21 2004-02-26 Siebels Randall L. Latch for an electrical device
CN201069745Y (en) * 2007-06-07 2008-06-04 浙江正泰电器股份有限公司 An operating mechanism of small residual current action breaker
CN201435358Y (en) * 2009-04-20 2010-03-31 浙江正泰电器股份有限公司 Operating mechanism of small residual current operated circuit breaker
CN201838528U (en) * 2010-09-16 2011-05-18 方华朋 Minitype circuit breaker
CN115472471A (en) * 2022-09-29 2022-12-13 厦门宏发开关设备有限公司 Circuit breaker and combined switch electrical apparatus
CN115513014A (en) * 2022-09-29 2022-12-23 厦门宏发开关设备有限公司 Tripping mechanism of circuit breaker and circuit breaker
CN218568759U (en) * 2022-09-29 2023-03-03 厦门宏发开关设备有限公司 Tripping mechanism of circuit breaker and circuit breaker

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