WO2024169215A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

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Publication number
WO2024169215A1
WO2024169215A1 PCT/CN2023/125270 CN2023125270W WO2024169215A1 WO 2024169215 A1 WO2024169215 A1 WO 2024169215A1 CN 2023125270 W CN2023125270 W CN 2023125270W WO 2024169215 A1 WO2024169215 A1 WO 2024169215A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
contact structure
circuit breaker
support
thermal
Prior art date
Application number
PCT/CN2023/125270
Other languages
English (en)
Chinese (zh)
Inventor
卢科军
顾翔翼
杨安
周长青
付浩
Original Assignee
上海正泰智能科技有限公司
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 CN202310135688.3A external-priority patent/CN118522611A/zh
Priority claimed from CN202310135654.4A external-priority patent/CN118522616A/zh
Application filed by 上海正泰智能科技有限公司 filed Critical 上海正泰智能科技有限公司
Publication of WO2024169215A1 publication Critical patent/WO2024169215A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker.
  • the internal layout of the existing circuit breaker results in limited installation space for the arc extinguishing chamber, which cannot accommodate arc extinguishing chambers of larger specifications, thus affecting the arc extinguishing and breaking capabilities of the circuit breaker; and the contact system of the existing circuit breaker cannot significantly increase the opening distance due to the internal space limitation of the circuit breaker, which limits the improvement of the breaking capacity of the circuit breaker.
  • the object of the present invention is to overcome at least one defect of the prior art and to provide a circuit breaker with a more reasonable internal layout, thereby providing a larger assembly space for the arc extinguishing chamber.
  • a circuit breaker comprises a circuit breaker housing and an operating mechanism, a contact system, an incoming terminal, an outgoing terminal, an arc extinguishing chamber and a thermal magnetic tripping mechanism arranged in the circuit breaker housing;
  • the contact system comprises a first contact structure and a second contact structure which are arranged to rotate synchronously;
  • the operating member of the operating mechanism, the contact system and the arc extinguishing chamber are arranged in sequence;
  • the incoming terminal and the outgoing terminal are located at both ends of the circuit breaker, the contact system and the arc extinguishing chamber are located between the incoming terminal and the outgoing terminal, the contact system and the arc extinguishing chamber are located on one side of the thermal-magnetic tripping mechanism, the incoming terminal or the outgoing terminal is located on the other side of the thermal-magnetic tripping mechanism, and the first contact structure and the second contact structure are arranged side by side.
  • the incoming terminal, the first contact structure, the second contact structure and the outgoing terminal are arranged side by side in sequence in the length direction of the circuit breaker; the arc inlet of the arc extinguishing chamber is relatively matched with the disconnection interval formed by the disconnection of the first contact structure and the second contact structure and faces the operating part.
  • the operating mechanism also includes a main connecting rod, a trip latch and a lock latch
  • the first contact structure includes a first support and a first contact
  • the first support is pivotally arranged in the circuit breaker housing
  • the first contact is arranged on the first support and rotates synchronously with the first support under the drive of the first support
  • the trip latch and the lock latch are respectively pivotally arranged on the first support and snap-fitted
  • the two ends of the main connecting rod are respectively hinged to the operating part and the trip latch part.
  • the operating mechanism also includes a coupling rocker, and the coupling rocker and the lock are arranged to rotate synchronously with the same shaft.
  • the coupling rocker and the lock are located on both sides of the first support; the thermal-magnetic tripping mechanism includes a thermal tripping structure and a magnetic tripping structure.
  • the thermal tripping structure is used to drive the lock to rotate through the coupling rocker to release the snap fit with the tripping buckle when an overload fault occurs in the circuit where the circuit breaker is located, and the magnetic tripping structure is used to directly drive the lock to rotate to release the snap fit with the tripping buckle when a short circuit fault occurs in the circuit where the circuit breaker is located; when multiple circuit breakers are arranged in parallel, among two adjacent circuit breakers, the lock of one circuit breaker is driven and connected to the coupling rocker of the other circuit breaker.
  • the thermal-magnetic tripping mechanism includes a thermal tripping structure for driving the operating mechanism to trip when an overload fault occurs in the circuit where the circuit breaker is located, and a magnetic tripping structure for driving the operating mechanism to trip when a short circuit fault occurs in the circuit where the circuit breaker is located.
  • the thermal tripping structure and the magnetic tripping structure are arranged side by side in the height direction of the circuit breaker.
  • the thermal tripping structure is located between the contact system and the incoming terminal or the outgoing terminal, and the magnetic tripping structure is located between the arc extinguishing chamber and the incoming terminal or the outgoing terminal.
  • the circuit breaker also includes an arc striking plate electrically connected to the outlet terminal and located between the outlet terminal and the arc extinguishing chamber in the length direction of the circuit breaker.
  • the thermal-magnetic tripping mechanism also includes a pivotally arranged thermal tripping transmission member, the thermal tripping structure includes a double-metal component, and the thermal tripping transmission member is located between the operating mechanism and the double-metal component.
  • the thermal-magnetic tripping mechanism also includes a pivotally arranged magnetic tripping transmission member
  • the magnetic tripping structure is a snap-on electromagnetic tripping device, which includes a pivotally arranged armature, and the magnetic tripping transmission member is located between the operating mechanism and the armature; the rotation centers of the lock of the operating mechanism, the magnetic tripping transmission member and the thermal tripping transmission member are respectively located at the three vertices of a triangle.
  • the thermal magnetic tripping mechanism also includes a pivotally arranged magnetic tripping transmission member, the magnetic tripping structure is a direct-acting electromagnetic tripping device, the magnetic tripping transmission member is located between the operating mechanism and the magnetic tripping structure, one end of the magnetic tripping transmission member is in transmission cooperation with the operating mechanism, and the other end is in transmission cooperation with the top rod of the direct-acting electromagnetic tripping device.
  • the contact system also includes a separator, which is located between the first contact structure and the second contact structure in the length direction of the circuit breaker, and the separator includes a separator portion.
  • the separator is driven to move the separator portion out from between the first contact point of the first contact structure and the second contact point of the second contact structure; when the first contact structure and the second contact structure are disconnected, the separator is driven to move the separator portion between the first contact point and the second contact.
  • the arc extinguishing chamber includes a plurality of arc extinguishing grids, each of which is arranged in parallel and spaced apart in the length direction of the circuit breaker; and the rotation centers of the operating member, the first contact structure and the second contact structure are located at three vertices of an acute triangle.
  • the circuit breaker housing is a convex-shaped structure
  • the operating member of the operating mechanism is arranged at the upper part of the convex-shaped structure
  • the arc extinguishing chamber is arranged at the lower part of the convex-shaped structure
  • the incoming terminal and the outgoing terminal are located at both ends of the lower part of the convex-shaped structure
  • the contact system is arranged at the junction of the upper and lower parts of the convex-shaped structure.
  • the thermal magnetic tripping mechanism includes a thermal tripping structure, a thermal tripping transmission member, a magnetic tripping structure and a magnetic tripping transmission member;
  • the thermal trip transmission member is located at the upper part of the convex structure, and the thermal trip structure extends from the lower part to the upper part of the convex structure.
  • the operating member, the thermal trip transmission member and the upper end of the thermal trip structure are arranged side by side in sequence; the magnetic trip transmission member and the magnetic trip structure are located at the lower part of the convex structure, and in the height direction of the circuit breaker, the magnetic trip transmission member and the magnetic trip structure are arranged side by side.
  • the magnetic trip transmission member is located between the contact system and the incoming terminal, and the magnetic trip structure is located between the arc extinguishing chamber and the incoming terminal.
  • first contact structure and the second contact structure are symmetrically and synchronously rotated.
  • the circuit breaker of the present invention has a reasonable and compact layout, provides a larger assembly space for the arc extinguishing chamber, and can be installed with an arc extinguishing chamber of larger specifications, which is beneficial to improving the arc extinguishing performance and breaking performance of the circuit breaker; moreover, the first contact structure and the second contact structure are arranged to rotate synchronously, which can not only double the breaking speed of the contact system but also double the opening distance, which is beneficial to improving the breaking performance and current carrying capacity of the short circuit.
  • lock and the linkage rocker cooperate with the thermal trip structure and the magnetic trip structure of the thermal magnetic trip mechanism respectively, providing more selection space for the matching points between the operating mechanism and the thermal magnetic trip mechanism, and facilitating layout and structural design.
  • FIG. 1 is a schematic diagram of the structure of a circuit breaker of the present invention, wherein the contact system is in a disconnected state and is provided with a thermal magnetic tripping mechanism of a first embodiment
  • FIG2 is a schematic diagram of the structure of the circuit breaker of the present invention, wherein the contact system is in a closed state and is provided with a thermal magnetic tripping mechanism of the first embodiment;
  • FIG. 3 is a schematic structural diagram of a housing base of a circuit breaker housing of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the trip buckle and the lock buckle, the first contact structure, and the thermal magnetic tripping mechanism of the operating mechanism of the present invention, wherein the trip buckle, the lock buckle and the first contact structure are in an assembled state;
  • FIG5a is a schematic structural diagram of the tripping buckle, locking buckle and linkage rocker of the operating mechanism of the present invention, the first contact structure, and the thermal magnetic tripping mechanism, wherein the tripping buckle, locking buckle and the first contact structure are in an assembled state, and the linkage rocker and the first contact structure are in an exploded state;
  • FIG5b is an enlarged structural schematic diagram of part A of FIG5a of the present invention.
  • FIG. 6 is a schematic diagram of the three-dimensional structure of the contact system according to the first embodiment of the present invention.
  • FIG. 7 is a schematic projection diagram of the contact system of the first embodiment of the present invention, showing the matching relationship between the separator and the first support;
  • FIG. 8 is a schematic diagram of the three-dimensional structure of the separator according to the first embodiment of the present invention.
  • FIG9a is a schematic structural diagram of a first contact structure and a second contact structure according to a first embodiment of the present invention.
  • 9b is a schematic structural diagram of the first contact structure and the second contact structure of the first embodiment of the present invention, and also shows the assembly relationship between the second return spring and the second support;
  • FIG. 10 is a schematic structural diagram of a second contact structure according to the first embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a first contact structure according to a first embodiment of the present invention.
  • FIG. 12 is a schematic cross-sectional view of the first contact structure of the first embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of the linkage rocker of the present invention.
  • FIG. 14 is a schematic structural diagram of a thermal release transmission member of the present invention.
  • FIG. 15 is a schematic structural diagram of a thermal magnetic tripping mechanism according to a first embodiment of the present invention.
  • 16 is a schematic diagram of the assembly structure of the yoke and armature of the magnetic tripping structure of the thermal magnetic tripping mechanism of the first embodiment of the present invention
  • 17 is a schematic diagram of the structure of the current-carrying conductive plate of the present invention.
  • FIG. 18 is a schematic structural diagram of a contact system according to a second embodiment of the present invention.
  • 19 is a schematic diagram of the structure of the circuit breaker of the present invention, the contact system is in the disconnected state, and it is provided with a thermal magnetic tripping mechanism of the second embodiment;
  • FIG. 20 is a schematic structural diagram of a thermal magnetic tripping mechanism according to a second embodiment of the present invention.
  • 21 is another schematic structural diagram of the contact system according to the second embodiment of the present invention.
  • FIG22 is a first connection mode between the operating mechanism of the present invention and the contact system of the second embodiment
  • FIG23 is a second connection method between the operating mechanism of the present invention and the contact system of the second embodiment
  • FIG24 is a third connection mode between the operating mechanism of the present invention and the contact system of the second embodiment
  • 25 is a schematic diagram of the connection between the operating mechanism of the present invention and the contact system of the third embodiment
  • FIG. 26 is a schematic diagram showing the connection between the operating mechanism of the present invention and the contact system of the third embodiment.
  • h switch housing h21 first contact shaft slot; h22 second contact shaft hole; h23 first guide slide groove; h55 thermal release lever shaft; 1 operating mechanism; 11 operating member; 11s fifth center; 12 main connecting rod; 13 jump buckle; 14 lock; 140 lock body; 141 lock first arm; 142 lock second arm; 1420 lock second arm connecting part; 1421 lock second arm driven part; 14-15 linkage shaft; 15 linkage rocker; 150 rocker mounting part; 1500 rocker mounting hole; 151 rocker first arm; 1510 rocker first arm matching groove; 152 rocker second arm; 16 slider; third center 17s; 17-21 first sub-connecting rod; 17-22 second sub-connecting rod; 17-23 support member connecting rod; 17-1s first sub-center; 17-2s second sub-center; 17-3s third sub-center; 17-4s fourth sub-center; 18 support member; 18s support member connecting rod center; 19s fifth center; 2 contact system; 2s contact mechanism center; 21 first contact structure; 211 first contact; 2110 first contact
  • the present invention discloses a switch electrical appliance, preferably a circuit breaker, which includes a switch housing h (preferably a circuit breaker housing) and an operating device arranged in the switch housing h, wherein the operating device includes an operating mechanism 1 and a contact system 2, wherein the operating mechanism 1 and the contact system 2 are connected in driving connection to drive the contact system 2 to close or open.
  • the switch electrical appliance also includes an incoming terminal 31 and an outgoing terminal 32, wherein the contact system 2 is connected in series between the incoming terminal 31 and the outgoing terminal 32, and the switch electrical appliance is electrically connected to an external circuit (that is, the circuit where the switch electrical appliance is located) through the incoming terminal 31 and the outgoing terminal 32.
  • the contact system 2 includes a contact mechanism, which includes a first contact structure 21 and a second contact structure 22 that are relatively arranged side by side.
  • the rotation directions of the first contact structure 21 and the second contact structure 22 remain opposite, and the two rotate synchronously towards each other to close and rotate synchronously away from each other to disconnect. That is, the contacts of the first contact structure 21 and the second contact structure 22 (the first contact 2110 of the first contact structure 21 and the second contact 2210 of the second contact structure 22) move towards each other to close (the first contact 2110 and the second contact 2210 are moved closer to each other to close) or move away from each other to disconnect (the first contact 2110 and the second contact 2210 are moved away from each other to disconnect).
  • the first contact structure 21 includes a first support 212 pivotally arranged around a first center 21s and a first contact 211 arranged on the first support 212.
  • the first contact 211 can also be called a first moving contact.
  • the first contact 211 rotates around the first center 21s driven by the first support 212, that is, the first support 212 carries the first contact 211 (first moving contact) and drives it to rotate;
  • the second contact structure 22 includes a first support 222 pivotally arranged around a second center 22s and a second contact 221 arranged on the second support 222.
  • the second contact 221 can also be called a second moving contact.
  • the second contact 221 rotates around the second center 22s driven by the second support 222, that is, the second support 222 carries the second contact 221 (second moving contact) and drives it to rotate. Furthermore, the first contact 211 is inserted into the first support 212, and the other end is provided with a first contact point 2110; one end of the second contact 221 is inserted into the second support 222, and the other end is provided with a second contact point 2210.
  • the first support 212 and the second support 222 are respectively pivotally arranged on the first support structure, and the first support structure is realized by the switch housing h.
  • the switch housing h comprises a housing base and a housing cover (not shown in the figure) that are relatively buckled together
  • the housing base comprises a first support shaft column and a second support shaft column arranged on its bottom plate, and a first base shaft hole h21 and a second base shaft hole h22 in the middle of the first support shaft column and the second support shaft column respectively cooperate with the rotation shafts of the first support 212 and the second support 222 (that is, the first support shaft 2124 and the second support shaft 2222).
  • the first contact structure 21 and the second contact structure 22 are symmetrically pivoted, and the symmetrical pivoting arrangement means that the rotation centers of the first contact structure 21 and the second contact structure 22 are symmetrical and the rotation angles are symmetrical, so that the first contact structure 21 and the second contact structure 22 can rotate in a limited space with a larger opening distance, saving the internal space of the switch electrical appliance, improving the breaking performance, facilitating the design and layout, and improving the aesthetics.
  • the first contact structure 21 and the second contact structure 22 can also be asymmetrically arranged.
  • the operating mechanism 1 is drivingly connected to the first contact structure 21 and/or the second contact structure 22 to drive the first contact structure 21 and the second contact structure 22 to rotate synchronously toward or away from each other. Specifically:
  • the operating mechanism 1 is connected to the contact system 2 by driving: the first contact structure 21 and the second contact structure 22 are matched in transmission and arranged to rotate in linkage (that is, one of the first contact structure 21 and the second contact structure 22 rotates, and the other is directly driven by the former to rotate synchronously), the operating mechanism 1 is connected to the first contact structure 21 by driving, the operating mechanism 1 drives the first contact structure 21 to rotate, and the first contact structure 21 simultaneously drives the second contact structure 22 to rotate, so as to realize the synchronous rotation of the first contact structure 21 and the second contact structure 22 in the opposite direction or in the opposite direction.
  • the first contact structure 21 and the second contact structure 22 are matched in transmission.
  • the operating mechanism 1 can also be connected to the second contact structure 22 by driving, the operating mechanism 1 drives the second contact structure 22 to rotate, and the second contact structure 22 simultaneously drives the first contact structure 21 to rotate
  • the first contact structure 21 and the second contact structure 22 are moved to realize synchronous rotation toward or away from each other.
  • one end of the first contact structure 21 and the second contact structure 21 are respectively pivotally arranged around the first center 21s and the second center 22s, and the other end is closed or disconnected to close or disconnect the contact system 2.
  • the operating mechanism 1 is linked with the first support 212 of the first contact structure 21, the first support 212 is linked with the second support 222, the operating mechanism 1 drives the first support 212 to rotate and drive the first contact 211 to rotate, and the first support 212 drives the second support 222 to rotate and drive the second contact to rotate, so as to realize the first contact 211 and the second contact 221 to rotate in the opposite direction or rotate synchronously in opposite directions.
  • the first support 212 includes a main gear 2121;
  • the second support 222 includes a slave gear 2221;
  • the main gear 2121 is meshed with the slave gear 2221, so as to realize the driving coordination of the first contact structure 21 and the second contact structure 22.
  • the first support and the second support realize synchronous rotation through gear meshing, and the operation is more reliable and stable.
  • the axis of the main gear 2121 coincides with the first center 21s, and the axis of the slave gear 2221 coincides with the second center 22s.
  • the axis of the main gear 2121 may not coincide with the first center 21s, and the axis of the slave gear 2221 may not coincide with the second center 22s.
  • main gear 2121 and the slave gear 2221 are both sector gears.
  • the first support 212 includes a first support body 2120 pivotally arranged around a first center 21s, and the gear teeth of the main gear 2121 are sequentially arranged on the circumferential side wall of the first support body 2120 along the circumference of the first support body 2120, that is, the first support body 2120 and the gear teeth arranged on the circumferential side wall of the first support body 2120 constitute the main gear 2121;
  • the second support 222 includes a second support body 2220 pivotally arranged around a second center 22s, and the gear teeth of the slave gear 2221 are sequentially arranged on the circumferential side wall of the second support body 2220 along the circumference of the second support body 2220, that is, the second support body 2220 and the gear teeth arranged on the circumferential side wall of the second support body 2220 constitute the slave gear 2221;
  • the gear teeth of the main gear 2121 and the slave gear 2221 are located between the first support body 2120 and the second support body 2220 and are meshed with each other.
  • first contact structure 21 and the second contact structure 22 may also be indirectly connected in transmission, that is, the first contact structure 21 and the second contact structure 22 are connected in transmission via an intermediate transmission structure independent of the two to achieve linkage of the first contact structure 21 and the second contact structure 22.
  • the contact system 2 further includes a contact reset spring, which applies a force to the first contact structure 21 or the second contact structure 22, so that the first contact structure 21 and the second contact structure 22 rotate in opposite directions and disconnect. Further, the contact reset spring applies a force to the first support 212 of the first contact structure 21 and/or applies a force to the second support 222 of the second contact structure 22, so that the first contact structure 21 and the second contact structure 22 rotate in opposite directions and disconnect.
  • the second contact structure 22 includes a second reset spring 223, which acts as a contact reset spring and applies a force to the second contact structure 22, so that the second contact structure 22 rotates toward its disconnected position.
  • the second contact structure 22 simultaneously drives the first contact structure 21 to rotate toward its disconnected position, that is, the second reset spring 223 drives the second contact structure 22 and the first contact structure 21 to rotate synchronously in opposite directions and disconnect.
  • the second reset spring 223 is a torsion spring
  • the second support 222 also includes a second support spring stop 2225.
  • the second reset spring 223 is coaxially arranged with the second support 222, and one end of the second reset spring 223 cooperates with the second support spring stop 2225, and the other end cooperates with the switch housing.
  • the first contact structure 21 is provided with a first return spring
  • the second contact structure 22 is not provided with a second return spring
  • the first return spring applies a force to the first contact structure 21, so that the first contact structure 21 rotates toward its disconnected position, and the first contact structure 21 simultaneously drives the second contact structure 22 to rotate toward its disconnected position, that is, the first return spring drives the first contact structure 21 and the second contact structure 22 to rotate synchronously in opposite directions and disconnect.
  • the first return spring is a torsion spring, and its setting method is similar to that of the second return spring 223.
  • the first contact structure 21 and the second contact structure 22 are symmetrically and synchronously pivoted and the two are coordinated in transmission, only one contact reset spring, that is, the second reset spring 223 or the first reset spring, is required to achieve rapid disconnection of the first contact structure 21 and the second contact structure 22, and the structure is simple and the operation is reliable.
  • the operating mechanism 1 includes an operating member 11, a main connecting rod 12 and a buckle transmission structure, the operating member 11 and the buckle transmission structure are pivotally arranged respectively, the main connecting rod 12 is hinged with the operating member 11 and the buckle transmission structure respectively, the buckle transmission structure includes a jump buckle 13 and a lock buckle structure which are pivotally arranged and snap-fitted respectively, the lock buckle structure includes a lock buckle 14 which is pivotally arranged and snap-fitted with the jump buckle 13, and the buckle transmission structure is connected to the first contact structure 21 or the second contact structure 22 in a transmission manner. Further, the buckle transmission structure also includes a pivotally arranged rotating plate, the jump buckle 13 and the lock buckle 14 are pivotally arranged on the rotating plate respectively. Further, the operating member 11 is pivotally arranged on the first supporting structure, and the first supporting structure is realized by the switch housing h.
  • the jumper 13 and the lock 14 are respectively pivotally arranged on the first support 212 and snap-fitted, the first support 212 serves as a rotating plate, and the two ends of the main connecting rod 12 are respectively hinged to the operating member 11 and the jumper 13; the operating member 11 is driven to rotate by an external force, and the jumper 13, the lock 14 and the first support 212 are driven by the main connecting rod 12 to rotate around the first center 21s as a whole to close or disconnect the contact system 2; the lock structure is driven by an external force (for example, the lock structure is subjected to the force of the thermal magnetic tripping mechanism 5, and the matching relationship between the thermal magnetic tripping mechanism 5 and the remaining lock structures will be described in detail later) to rotate to release the snap-fitting of the lock structure and the jumper 13 (that is, the snap-fitting of the lock 14 and the jumper 13).
  • an external force for example, the lock structure is subjected to the force of the thermal magnetic tripping mechanism 5, and the matching relationship between the thermal magnetic tripping mechanism 5 and
  • the first support 212 further comprises a jumper shaft 2123 for pivotally mounting the jumper 13, a locker shaft for pivotally mounting the locker 14 and a first support shaft 2124 for pivotally mounting the first support body 2120 of the first support 212, the locker shaft is coaxially arranged with the first support shaft 2124, and the jumper shaft 2123 and the locker shaft are both arranged at one axial end of the first support body 2120.
  • the jumper 13 is rotatably sleeved on the jumper shaft 2123
  • the locker 14 is rotatably sleeved on the locker shaft.
  • the first support 212 also includes a lock rotation limiter, which is arranged on the radial side of the lock shaft and coaxially with the lock shaft; as shown in Figure 4, the lock 14 includes a lock mounting hole and a locking portion arranged in the lock mounting hole.
  • the lock stop boss on the inner wall, the lock 14 is mounted on the lock shaft and the lock rotation limit platform through the lock mounting hole, the lock rotation limit platform cooperates with the lock stop boss and is located on both radial sides of the lock shaft to limit the rotation angle of the lock 14 relative to the first support 212.
  • the first support 212 also includes a jump buckle limit block 2128 arranged on one side of the jump buckle shaft 2123.
  • the jump buckle limit block 2128 cooperates with the jump buckle 13 to limit the swing range of the jump buckle 13 relative to the first support body 2120 of the first support 212.
  • the first support 212 also includes a first support impact portion 2125 arranged on a radial side of the first support body 2120.
  • the first support impact portion 2125 is impacted (for example, by the magnetic tripping transmission member 54 or the magnetic tripping structure) to cause the first support 212 to rotate in the disconnecting direction, thereby accelerating the speed at which the first support 212 rotates in the disconnecting direction, thereby improving the disconnecting efficiency of the contact system 2.
  • the jump buckle 13 and the lock buckle 14 can also be pivotally arranged on the second support 222 and snap-fitted.
  • the jump buckle 13, the lock buckle 14 and the second support 222 rotate around the second center 22s under the drive of the operating member 11 to close or open the contact system 2.
  • the lock structure of the operating mechanism 1 further includes a linkage rocker 15, which is coaxial with the lock 14 and rotates synchronously, and the linkage rocker 15 and the lock 14 are stacked along the rotation axis of the lock 14.
  • the linkage rocker 15 is driven by the thermal trip structure of the thermal magnetic trip mechanism to rotate, and the linkage rocker 15 drives the lock 14 to rotate to release the snap fit with the trip 13.
  • the lock 14 is driven by the magnetic trip structure of the thermal magnetic trip mechanism to rotate, thereby releasing the snap fit between the lock 14 and the trip 13.
  • thermal trip structure directly drives the linkage rocker 15 to rotate through the pivotally arranged thermal trip transmission member 55, and the linkage rocker 15 drives the lock 14 to rotate to release the snap fit with the trip 13.
  • the magnetic trip structure directly drives the lock 14 to rotate through the pivotally arranged magnetic trip transmission member 54 to release the snap fit with the trip 13.
  • the lock structure, the thermal release transmission member 55 and the magnetic release transmission member 54 are distributed at the three vertices of a triangle. Further, the lock 14 and the linkage rocker 15 are both pivotally arranged around the first center 21s, the magnetic release transmission member 54 is pivotally arranged around the third center 54s, and the thermal release transmission member 55 is pivotally arranged around the fourth center 55s.
  • the first center 21s, the third center 54s and the fourth center 55s are distributed at the three vertices of a triangle.
  • the lock buckle 14 , the first support 212 and the linkage rocker 15 are sequentially stacked along the rotation axis direction of the lock buckle 14 , and the lock buckle 14 and the linkage rocker 15 are respectively located on both sides of the first support 212 .
  • the lock 14 includes a lock body 140 and a lock second arm 142 arranged on the lock body 140, and the lock 14 is pivoted through the lock body 140;
  • the linkage rocker 15 includes a rocker mounting portion 150 and a rocker first arm 151 arranged on the rocker mounting portion 150, and the linkage rocker 15 is pivoted through the rocker mounting portion 150, and the lock second arm 142 and the rocker first arm 151 are driven and connected.
  • the second lock arm 142 includes a second lock arm connecting portion 1420 and a second lock arm driven portion 1421, one end of the second lock arm connecting portion 1420 is connected to the lock body 140, and the other end is connected to the second lock arm driven portion 1421;
  • the first rocker arm 151 is provided with a first rocker arm matching groove 1510, and the second lock arm driven portion 1421 is inserted into the first arm matching groove 1510 to achieve synchronous rotation of the lock 14 and the linkage rocker 15.
  • the extension direction of the second lock arm driven portion 1421 is parallel to the rotation axis direction of the lock 14.
  • the linkage rocker 15 also includes a rocker second arm 152 connected to the rocker body 150
  • the lock 14 also includes a lock first arm 141 connected to the lock body 14; when multiple operating mechanisms 1 are arranged in parallel and linked, the rocker second arm 152 and the lock first arm 141 of two adjacent operating mechanisms 1 are connected through the linkage shaft 14-15, thereby realizing the linkage release of each operating mechanism.
  • the rocker body 150 of the linkage rocker 15 includes a rocker body shaft hole 1500 disposed in the middle thereof, and the rocker body 150 is rotatably sleeved on the first supporting shaft column of the housing base through the rocker body shaft hole 1500 .
  • the angle between the first lock arm 141 and the second lock arm 142 is an obtuse angle
  • the angle between the first rocker arm 151 and the second rocker arm 152 is an obtuse angle.
  • the first lock arm 141 and the second rocker arm 152, and the second lock arm 142 and the first rocker arm 151 are correspondingly arranged in the direction of the rotation axis of the lock 14.
  • the first contact structure 21 further includes a first contact spring 213.
  • the first contact 211 is rotatably arranged relative to the first support 212, and the first contact spring 213 is arranged between the first contact 211 and the first support 212.
  • the first contact spring 213 applies a first force to the first contact 211.
  • the first force causes the first contact 211 to be limitedly matched with the first support 212 and remain relatively still.
  • the first contact 211 rotates relative to the first support 212 to store energy in the first contact spring 213, and the first force causes the first contact 211 to press the second contact 221, that is, the first contact spring 213 provides an overtravel force to the first contact 211, ensuring that the first contact 211 and the second contact 221 are reliably closed.
  • the first contact 211, the first support 212 and the first contact spring 213 are assembled in the following manner: the first support 212 includes a first support body 2120 and a first contact stopper 2126; a first support cavity 21200 is provided in the middle of the first support body 2120; a first contact insertion hole 21201 is provided on the side wall of the first support cavity 21200; one end of the first contact 211 is inserted into the first support cavity 21200 through the first contact insertion hole 21201; the first contact stopper 2126 is provided on the outer side wall of the first support body 2120 and is located on one side of the first contact insertion hole 21201; the first contact spring 213 is provided in the first support cavity 21200; One end of the torsion spring inside is limited by the inner wall of the first support cavity 21200, and the other end is limited by one end of the first contact 211 inserted into the first support cavity 21200 so that the first contact 211 is against the first contact limit block 2126.
  • the first contact 211 is rotatably arranged relative to the first support 212 with the first contact limit block 2126 as the support.
  • the above-mentioned assembly method has a simple structure and reliable assembly, which ensures the reliable operation of the first contact structure 21.
  • the first contact limit block 2126 is also used to block the part of the first contact 211 protruding outside the first support 212 and close to the first support 212, which is beneficial to increase the electrical clearance and creepage distance after the first contact structure 21 and the second contact structure 22 are disconnected.
  • the first support 212 also includes a first contact spring shaft 2127 disposed in the first support cavity 21200 , and the first contact spring 213 is sleeved on the first contact spring shaft 2127 .
  • the first contact spring 213 can also be configured as a tension spring, and both ends of the tension spring are respectively hung on one end of the first contact 211 inserted in the first supporting cavity 21200 and the first contact spring shaft 2127.
  • the setting position of the first contact spring shaft 2127 needs to be adjusted accordingly.
  • the locking shaft 2123, a first supporting shaft 2124 and a tripping stopper 2128 are arranged on one axial end of the first supporting body 2120, the first supporting cavity 21200 is arranged in the axial middle of the first supporting body 2120, and another first supporting shaft 2124 is arranged on the other axial end of the first supporting body 2120. Further, the first supporting cavity 21200 is opened on one side facing the linkage rocker 15.
  • the second contact structure 22 further includes a second contact spring (not shown in the figure), the second contact 221 is rotatably arranged relative to the second support 222, and the second contact spring is arranged between the second contact 221 and the second support 222; the second contact spring applies a second force to the second contact 221.
  • the second force causes the second contact 221 to be limitedly matched with the second support 222 and remain relatively stationary.
  • the second contact 221 rotates relative to the second support 222 so that the second contact spring can still move, and the second force causes the second contact 221 to press the first contact 211, that is, the second contact spring provides an overtravel force to the second contact 221, thereby ensuring that the second contact 221 and the first contact 211 are reliably closed;
  • the second contact limit block 2224 is also used to block the part of the second contact 221 protruding outside the second support 222 and close to the second support 222, which is beneficial to increase the electrical clearance and creepage distance after the first contact structure 21 and the second contact structure 22 are disconnected.
  • the second contact 221, the second support 222 and the second contact spring are assembled in the following manner:
  • the second support 222 includes a second support body 2220 and a second contact limiting block 2224, a second support cavity is provided in the middle of the second support body 2220, and a second contact insertion hole is provided on the side wall of the second support cavity, one end of the second contact 221 is inserted into the second support cavity through the second contact insertion hole, the second contact limiting block 2224 is arranged on the outer side wall of the second support body 2220 and is located on one side of the second contact insertion hole, the second contact spring is a torsion spring arranged in the second support cavity, one end of which is limitedly matched with the inner side wall of the second support cavity, and the other end is limitedly matched with one end of the second contact 221 inserted into the second support cavity so that the second contact rests on the second contact limiting block 2224, and the second contact 221 is rotatably arranged relative to the second support 222 with the second contact
  • the second support 222 further includes a second support shaft 222 , and the two second support shafts 222 are respectively disposed at two axial ends of the second support body 2220 .
  • the second contact spring can also be configured as a tension spring, with both ends of the tension spring respectively hung on one end of the second contact 221 inserted in the second supporting cavity and on the second contact spring axis.
  • the setting position of the second contact spring axis needs to be adjusted accordingly.
  • the first contact 211 includes a first contact point 2110 and a first contact arm 2111.
  • the first contact arm 2111 is a V-shaped structure, including a first contact arm outer section and a first contact arm inner section. One end of the first contact arm outer section is provided with a first contact point 2110, and the other end is bent and connected to one end of the first contact arm inner section. The other end of the first contact arm inner section is inserted into the first support 212.
  • the first contact arm outer section is bent relative to the first contact arm inner section in a direction away from the second contact 221. Further, the angle between the first contact arm outer section and the first contact arm inner section is an obtuse angle.
  • the first contact 211 and the second contact 212 are symmetrical structures to each other, and the structure of the second contact 212 will not be described in detail herein.
  • the contact system 2 also includes a separator 23, and the separator 23 includes a separator 232; as shown in Figure 2, when the first contact structure 21 and the second contact structure 22 are closed, the separator 23 is driven by the operating mechanism 1 or the contact system 2 to move the separator 232 out from between the first contact 2110 of the first contact structure 21 and the second contact 2210 of the second contact structure 22; as shown in Figure 1, when the first contact structure 21 and the second contact structure 22 are disconnected, the separator 23 is driven to move the separator 232 between the first contact 2110 and the second contact 2210; the separator 23 can lengthen and shield the arc generated between the first contact structure 21 and the second contact structure 22 during the disconnection process, which is beneficial to improve the breaking performance and the current carrying capacity of the contact system 2.
  • the partition 23 is arranged to move as a whole, and is driven to move in the first direction or the second direction, the first direction and the second direction being opposite directions, so that the partition 232 moves in or out between the first contact 2110 and the second contact 2210.
  • first contact 2110 and the second contact 2210 refer to the mutual contact area of the first contact structure 21 and the second contact structure 22, which can refer to the contact structure independently arranged in a narrow sense, or the part of the first contact structure 21 and the second contact structure 22 used to contact each other.
  • the baffle 23 is driven to move upward and move out between the first contact 2110 and the second contact 2210; when the first contact structure 21 and the second contact structure 22 are disconnected, the baffle 23 is driven to move downward and move into between the first contact 2110 and the second contact 2210.
  • the separator 23 completely separates the first contact 211 of the first contact structure 21 (especially the portion of the first contact 211 protruding outside the first support 212) and the second contact 221 of the second contact structure 22 (especially the portion of the second contact structure 221 protruding outside the second support 222), that is, the first contact 211 and the second contact 221 are completely blocked by the separator 23, one relative to the other, in a direction perpendicular to the moving direction of the separator 23.
  • the separator 23 can also be rotatably arranged. When the first contact structure 21 and the second contact structure 22 are closed, the separator 23 is driven to swing so that the separator 232 moves out from between the first contact point 2110 and the second contact point 2210. When the first contact structure 21 and the second contact structure 22 are disconnected, the separator 23 is driven to swing so that the separator 232 moves into between the first contact point 2110 and the second contact point 2210. It should be noted that the separator 23 of this embodiment is used to separate the first contact structure 21 and the second contact structure 22 that are symmetrically and synchronously pivoted. As another embodiment, it can also be used to separate two asymmetrical contact structures that are synchronously arranged and both move and cooperate. The first contact structure 21 and the second contact structure 22 .
  • the separator 23 is driven by the first contact structure 21 to move so that the separator 232 moves in or out between the first contact 2110 and the second contact 2210 .
  • the first support 212 includes a separator driving gear 2122, and the axis of the separator driving gear 2122 coincides with the first center 21s; the separator 23 includes a separator rack 231 connected to the separator portion 232, and the separator driving gear 2122 is engaged with the separator rack 231.
  • the first support 212 is driven to rotate by the operating mechanism 1, and the first support 212 drives the separator driving gear 2122 to rotate, and the separator driving gear 2122 drives the separator 23 to move linearly through the separator rack 231, so that the separator portion 232 of the separator 23 moves in or out between the first contact 2110 and the second contact 2210.
  • the teeth of the separator driving gear 2122 are arranged in sequence on the circumferential side wall of the first support body 2120 along the circumference of the first support body 2120 of the first support 212, that is, the first support body 2120 and the teeth of the separator driving gear 2122 arranged on the circumferential side wall of the first support body 2120 constitute the separator driving gear 2122.
  • the gear teeth of the partition driving gear 2122 and the gear teeth of the main gear 2121 are arranged side by side along the axial direction of the first support 212 .
  • the second support 222 includes a separator limiting platform 2223, the separator limiting platform 2223 and the separator driving gear 2122 are respectively located on both sides of the separator rack 231, and the separator limiting platform 2223 and the separator rack 231 are limited and matched to keep the separator rack 231 meshed with the separator driving gear 2122.
  • the separator rack 231 includes teeth arranged on the front side thereof and a rack limiting side surface arranged on the back side thereof, and the separator limiting platform 2223 abuts and limits the position with the rack limiting side surface, so that the separator rack 231 and the separator driving gear 2122 are kept meshed.
  • the separator limit platform 2223 is a fan-shaped platform, whose center coincides with the second center 22s, and includes a limit arc surface, which is in line contact with the separator rack 231, thereby ensuring the limit effect while reducing the friction between the two.
  • the partition 23 also includes a partition back plate 230, which is located on one side of the partition rack 231 and connected to it in the width direction of the partition rack 231 (the direction in which the teeth of the partition rack 231 are arranged side by side is the length direction of the partition rack 231, and the extension direction of a single tooth of the partition rack 231 is the width direction of the partition 231, and the length direction and the width direction are perpendicular to each other), and one end of the partition rack 231 and the partition back plate 230 in the length direction of the partition rack 231 (the side-by-side direction of the teeth of the partition rack 231 is the length direction of the partition rack 231) are both connected to the partition portion 232; the partition back plate 230 is conducive to strengthening the strength of the partition rack 231.
  • the separator 23 is an L-shaped structure as a whole, the separator portion 231 serves as one side of the L-shaped structure, and the separator rack 231 and the separator back plate 230 serve as the other
  • the partition 232 includes a partition plate 2320 and a reinforcing connection portion 2321.
  • the partition rack 231 and the partition back plate 230 are connected to the reinforcing connection portion 2321 at one end in the length direction of the partition rack 231.
  • the partition back plate 230 and the partition rack 231 are located on one side of the reinforcing connection portion 2321, and the partition plate 2320 is located on the other side of the reinforcing connection portion 2321.
  • the thickness of the reinforcing connection portion 2321 is greater than the thickness of the partition plate 2320, thereby enhancing the connection strength between the partition rack 231, the partition back plate 230 and the partition 232. Further, the two ends of the reinforcing connection portion 2320 in the thickness direction protrude from the two sides of the partition plate 2320, respectively.
  • the separator 23 further comprises a first separator sliding rib 233 and a second separator sliding rib 234 respectively arranged at both ends of the separator 232, and the first separator sliding rib 233 and the second separator sliding rib 234 are respectively used to slide with the first guide groove h23 and the second guide groove (not shown in the figure) fixedly arranged, so as to limit the moving path of the separator 23 and ensure the reliable cooperation between the separator, the first contact structure 21 and the second contact structure 23.
  • the first guide groove h23 and the second guide groove are respectively arranged on the housing base and the housing cover of the switch housing h.
  • the switch electrical appliance of the present invention also includes a thermal magnetic tripping device, which is used to drive the operating mechanism 1 to trip when an overload or short circuit fault occurs in the circuit where the switch electrical appliance is located, so that the contact system 2 disconnects the circuit where the switch electrical appliance is located.
  • a thermal magnetic tripping device which is used to drive the operating mechanism 1 to trip when an overload or short circuit fault occurs in the circuit where the switch electrical appliance is located, so that the contact system 2 disconnects the circuit where the switch electrical appliance is located.
  • the thermal-magnetic tripping device includes a thermal-magnetic tripping mechanism 5, which includes a thermal tripping structure and a magnetic tripping structure.
  • the thermal tripping structure is used to drive the operating mechanism 1 to trip and open the switch when an overload fault occurs in the circuit where the switch is located, and the magnetic tripping structure is used to drive the operating mechanism 1 to trip and open the switch when a short-circuit fault occurs in the circuit where the switch is located.
  • the thermal trip structure includes a bimetallic strip 56, one end of which in the length direction is fixedly connected to the magnetic trip structure; in the length direction of the bimetallic strip 56, the magnetic trip structure and the thermal trip structure are arranged side by side.
  • This layout method is conducive to reducing the installation space required for the thermal-magnetic trip mechanism 5, so that the thermal-magnetic trip mechanism 5 can be installed in a narrow space;
  • the thermal trip structure and the magnetic trip structure are an integrated modular structure, which is convenient for transportation, installation and disassembly, and improves the positioning accuracy of each component of the thermal-magnetic trip mechanism, so that the thermal-magnetic trip mechanism will not be affected by the deformation of the shell used to install the thermal-magnetic trip mechanism. Changes, thereby ensuring the action performance of the thermal-magnetic trip mechanism; and it can also realize that the thermal trip structure and the magnetic trip structure cooperate with the operating mechanism from different directions, which is convenient for structural and layout design, and can also save the material consumption of the bimetallic strip.
  • one end of the bimetallic strip 56 is a bimetallic strip fixed end for being fixedly connected to the magnetic tripping structure and the other end is a bimetallic strip driving end for outputting the first tripping driving force outward;
  • the magnetic tripping structure includes a magnetic tripping driving member, one end of the magnetic tripping driving member is a driving member driving end for outputting the second tripping driving force outward and the other end is a driving member mounting end; in the length direction of the bimetallic strip 56, the bimetallic strip driving end, the bimetallic strip fixed end, the driving member driving end and the driving member mounting end are arranged in sequence, which is conducive to reducing the installation space required for the thermal magnetic tripping mechanism 5. Specifically, as shown in the directions of Figures 4, 5a, and 20, the bimetallic strip driving end, the bimetallic strip fixed end, the driving member driving end and the driving member mounting end are arranged in sequence from top to bottom.
  • the thermal trip device also includes a thermal trip transmission member 55 and a magnetic trip transmission member 54 which are pivotally arranged respectively, and the magnetic trip transmission member 54, the thermal trip transmission member 55 and the locking structure of the operating mechanism 1 are distributed at the three vertices of a triangle; when an overload fault occurs in the circuit where the thermal-magnetic trip mechanism 5 is located, the thermal trip structure drives the locking structure to rotate through the thermal trip transmission member 55 to release the snap fit with the trip button 13, so that the operating mechanism 1 is tripped; when a short circuit fault occurs in the circuit where the thermal-magnetic trip mechanism 5 is located When the magnetic tripping structure drives the lock structure to rotate through the magnetic tripping transmission member 54, the snap fit with the tripping buckle 13 is released, so that the operating mechanism 1 is tripped.
  • the thermal tripping structure is driven and matched with the lock structure through the thermal tripping transmission member, and the magnetic tripping structure is driven and matched with the lock structure through the magnetic tripping transmission member.
  • the reliability and stability of the transmission path between the thermal-magnetic tripping mechanism and the operating mechanism are guaranteed.
  • the thermal tripping transmission member and the magnetic tripping transmission member are both pivotally arranged, and the required action space and installation space are small, which is conducive to saving space.
  • its magnetic tripping structure is a snap-on electromagnetic tripping device, which includes a current-carrying conductive plate 33 and a yoke 51 and an armature 52 used in conjunction with it.
  • the current-carrying conductive plate 33 is used to be connected in series with the circuit to be protected (that is, the circuit to which the switch electrical appliance of the present invention is connected).
  • the current-carrying conductive plate 33 is connected in series with the contact system 2 and is also connected in series with the circuit where the switch electrical appliance is located;
  • the armature 52 serves as a magnetic tripping driving member, one end of which is rotatably arranged and the end is the armature pivot end (the armature pivot end serves as the driving member installation end), and the other end is swingably arranged and the end is the armature driving end (the armature driving end serves as the driving member driving end).
  • the armature 52 swings to attract or separate from the yoke 51, and the conductive plate matching section 3 of the current-carrying conductive plate 33 33 passes through the middle of the yoke 51 and is located between the yoke 51 and the armature 52, the plane where the conductive plate matching section 333 is located is parallel to the rotation axis of the armature 52, and the direction in which the conductive plate matching section 333 is inserted between the yoke 51 and the armature 52 is perpendicular to the rotation axis of the armature 52, and the extension direction of the conductive plate matching end 333 is the same as the direction in which the conductive plate matching end 333 is inserted between the yoke 51 and the armature 52; the bimetallic fixed end of the bimetallic strip 56 is fixedly connected and electrically connected to the current-carrying conductive plate 33; when an overload or short-circuit fault occurs in the circuit where the switch electrical appliance is located, an overload or short-circuit current flows through the current
  • the fixed end of the bimetallic strip is fixedly connected to the current-carrying conductive plate 33, the armature 52 is rotatably arranged on the yoke 51, and the yoke 51 is fixedly connected to the current-carrying conductive plate 33, so that the thermal-magnetic tripping mechanism 5 becomes an integrated structure, and the thermal-magnetic tripping mechanism 5 is an integral module, which is convenient for assembly and disassembly.
  • the current-carrying conductive plate 33 also serves as a conductive plate for connecting the contact system 2 and the incoming terminal 31 in series.
  • the above-mentioned layout of the thermal trip structure and the magnetic trip structure of the first embodiment is beneficial to reducing the size specifications of the yoke 51 and reducing the overall thickness of the thermal magnetic trip mechanism 5 (that is, the thickness in the direction from the armature 52 to the yoke 51), compared with the traditional method of placing the bimetallic component between the yoke and the armature of the magnetic trip structure.
  • the magnetic release structure further includes an armature spring 53, which is connected to the armature 52 and applies a force to the armature 52, so that the armature 52 has a rotational tendency to separate from the yoke 51.
  • the force applied to the armature 52 by the armature spring 53 must be overcome.
  • the current-carrying conductive plate 33 further includes a conductive plate second intermediate section 332, one end of which is bent and connected to an end of the conductive plate matching section 333 away from the bimetallic component, one end of the armature spring 53 is connected to the armature drive end of the armature 52, and the other end is connected to the conductive plate second intermediate section 332.
  • the thermal release structure further includes a bimetallic support 58, which includes a support vertical portion 580 and a support horizontal portion 581.
  • a bimetallic support 58 which includes a support vertical portion 580 and a support horizontal portion 581.
  • One end of the support vertical portion 580 is connected to the bimetallic strip 56, and the other end is connected to the support horizontal portion 581 by bending.
  • the current-carrying conductive plate 33 further includes a conductive plate third middle section 334 connected to the conductive plate matching section 333 by bending.
  • the conductive plate third middle section 334 is located between the magnetic release structure and the bimetallic support 58.
  • the support horizontal portion 581 is parallel to the conductive plate third middle section 334 and is fixedly connected.
  • the bimetallic strip 56 is fixedly connected to the magnetic release structure through the bimetallic support 58.
  • the bimetallic support 58 is an L-shaped structure, and the support vertical portion 580 and the support horizontal portion 581 are respectively used as two sides of the L-shaped structure.
  • the current-carrying conductive plate 33 also includes a conductive plate bimetallic adjustment section 335 opposite to the bracket vertical portion 580, the conductive plate bimetallic adjustment section 335 is connected to the conductive plate third middle section 334 by bending, the conductive plate bimetallic adjustment section 335 and the conductive plate matching section 333 are respectively bent to the two sides of the conductive plate third middle section 334, and the conductive plate bimetallic adjustment section 335 is provided with an adjustment section screw hole; the thermal release structure also includes a bimetallic adjustment screw 57, the bimetallic adjustment screw 57 is threadedly matched with the adjustment section screw hole, and one end of the bimetallic adjustment screw 57 is used to press the bracket vertical portion 58, and is used to adjust the bimetallic strip 56. Further, the conductive plate matching section 333, the conductive plate third middle section 334 and the conductive plate bimetallic adjustment section 335 are connected by right-angle bending in sequence.
  • the bimetallic strip 56 directly drives the linkage rocker 15 of the operating mechanism 1 to rotate through the thermal release transmission member 55 , and the linkage rocker 15 drives the lock buckle 14 to rotate to release the snap fit between the lock buckle 14 and the trip buckle 13 .
  • the thermal release transmission member 55 directly drives the lock buckle 14 to rotate to release the buckle fit between the lock buckle 14 and the trip buckle 13. Furthermore, the thermal release transmission member driving arm 552 of the thermal release transmission member 55 directly drives the lock buckle second arm 142 of the lock buckle 14.
  • the thermal trip transmission member 55 includes a thermal trip transmission member mounting portion 550, a thermal trip transmission member actuated arm 551 and a thermal trip transmission member driving arm 552.
  • the thermal trip transmission member 55 is pivotally arranged through the thermal trip transmission member mounting portion 550.
  • One end of the thermal trip transmission member actuated arm 551 is connected to the thermal trip transmission member mounting portion 550, and the other end is driven and cooperated with the bimetallic strip 56.
  • One end of the thermal trip transmission member driving arm 552 is connected to the thermal trip transmission member mounting portion 550, and the other end is driven and cooperated with the operating mechanism 1 to drive the lock buckle 14 of the operating mechanism 1 to rotate and release its buckle cooperation with the trip buckle 13.
  • the thermal trip transmission member actuated arm 551 and the thermal trip transmission member driving arm 552 are distributed along the axial direction of the thermal trip transmission member mounting portion 550. Further, the free end of the thermal trip transmission member driving arm 552 is driven and matched with the linkage rocker 15 of the operating mechanism 1 to drive the linkage rocker 15 to rotate, and the linkage rocker 15 drives the lock buckle 14 to rotate to release the buckle cooperation with the trip buckle 13. Further, the angle between the thermal trip transmission member driven arm 551 and the thermal trip transmission member driving arm 552 is ⁇ 90°.
  • the thermal trip transmission component mounting portion 550 includes a thermal trip transmission component mounting hole 5500 disposed in the middle thereof, and a thermal trip lever shaft h55 is disposed on the shell base.
  • the thermal trip transmission component mounting portion 550 is rotatably sleeved on the thermal trip lever shaft h55 through the thermal trip transmission component mounting hole 5500 .
  • the thermal release transmission member driven arm 551 includes a transmission member driven arm connecting portion 5510 and a transmission member driven arm driven portion 5511.
  • One end of the transmission member driven arm connecting portion 5510 is connected to the thermal release transmission member mounting portion 550, and the other end is connected to the transmission member driven arm driven portion 5511.
  • the extension direction of the transmission member driven arm driven portion 5511 is parallel to the rotation axis direction of the thermal release transmission member 55 and perpendicular to the thermal release transmission member 55.
  • the extending direction of the bimetallic strip 56 of the magnetic tripping mechanism 5 is parallel to the rotation axis direction of the thermal release transmission member 55 and perpendicular to the thermal release transmission member 55.
  • the yoke 51 includes a yoke body 510 and a yoke support arm 511 and a yoke limit arm 512 respectively arranged at both ends of the yoke body 510;
  • the two ends of the armature 52 are an armature pivot end and an armature drive end respectively, the armature pivot end is rotatably supported on the yoke support arm 511 and cooperates with the yoke support arm 511 to limit the movement of the armature 52 along the direction of its rotation axis, and the armature drive end cooperates with the yoke limit arm 512 to limit the movement of the armature 52 along the direction of its rotation axis;
  • the assembly method of the yoke 51 and the armature 52 is simple and reliable, and the yoke 51 forms a reliable limit on the armature 52 while supporting the rotation of the armature 52, ensuring that the armature 52 rotates reliably and stably
  • the yoke body 510 is a U-shaped structure, which includes a yoke body bottom plate 5100 and a yoke body side plate 5101.
  • the two ends of the yoke body bottom plate 5100 are respectively arranged with two yoke body side plates 5101 in relative spacing.
  • the conductive plate matching section 333 passes through between the two yoke body side plates 5101 and is relatively fixedly connected to the yoke body bottom plate 5100.
  • the yoke body side plates 5101 face the yoke body.
  • each of the yoke body side plates 5101 is provided with a yoke support arm 511 and a yoke limit arm 512, the yoke support arms 511 on the two yoke body side plates 5101 are arranged relatively at intervals, the yoke limit arms 512 on the two yoke body side plates 5101 are arranged relatively at intervals, the armature drive end is rotatably supported on the two yoke limit arms 512, and the armature drive end swings between the two yoke limit arms 512. Further, the yoke support arms 511 and the yoke limit arms 512 are respectively arranged at both ends of the edge of the yoke body side plates 5101 facing the armature 52.
  • the yoke body 510 may also include more than two yoke body side panels 5101, and the yoke body side panels 5101 are arranged side by side in sequence and at intervals.
  • the structure of the conductive plate matching section 333 also needs to be adjusted accordingly, for example, an opening is provided for the yoke body side panel 5101 located in the middle to pass through; each of the yoke body side panels 5101 may be provided with a yoke support arm 511 and a yoke limit arm 512, or the yoke support arm 511 and the yoke limit arm 512 may be provided only on the two outermost yoke body side panels 5101.
  • the yoke support arm 511 is provided with a yoke support groove 5110
  • the armature 52 also includes two armature feet 522 arranged at a relative interval on the pivot end of the armature, and both sides of the two armature feet 522 form support shoulders, that is, two step-type structures formed on both sides of the two armature bases 522, and the two support shoulders are respectively rotatably arranged in the two yoke support grooves 5110, and the two armature feet 522 are located between the two yoke support arms 511 and respectively cooperate with the two yoke support arms 511 to limit the movement of the armature 52 along its axial direction.
  • edge of the yoke body side plate 5101 facing the armature 52 constitutes a side wall of the yoke support groove 5110, so that when the yoke 51 and the armature 52 are attracted, the armature 52 and the yoke body side plate 5101 are tightly fitted.
  • the free ends of the yoke limit arms 512 are each provided with a yoke stopper, and the two yoke stoppers protrude between the two yoke limit arms 512.
  • the two yoke stoppers cooperate with the armature drive end to prevent the armature drive end from swinging out of the two yoke limit arms 512, so as to ensure that the armature 52 swings within a predetermined swing angle range relative to the yoke 52.
  • the armature drive end includes an armature limit plate 5210 and an armature drive finger 5211, the armature limit plate 5210 is located between the two yoke limit arms 512 and cooperates with the two yoke stoppers to limit, and the armature drive finger 5211 is used to cooperate with the operating mechanism 1 in driving.
  • the armature 52 also includes an armature main plate 520, which is located between the armature support arm 511 and the armature limit arm 512 and cooperates with the yoke body side plate 5101.
  • One end of the armature main plate 520 is connected to the armature bottom foot 522, and the other end is connected to the armature limit plate 5210.
  • the armature 52 directly drives the lock buckle 14 to rotate through the magnetic release transmission member 54 , so that the lock buckle 14 releases the snap fit with the jump buckle 13 , and the operating mechanism 1 is released.
  • the current-carrying conductive plate 33 further includes a conductive plate support arm 336, which is connected to the conductive plate double-metal adjustment section 335 by bending, and the magnetic release transmission member 54 is pivotally arranged on the conductive plate support arm 336. Further, the plane where the conductive plate support arm 336 is located is perpendicular to the plane where the conductive plate double-metal adjustment section 335 is located. Further, the rotation axis of the magnetic release transmission member 54 is parallel to the rotation axis of the armature 52.
  • the magnetic release transmission member 54 includes a first arm 541 of the magnetic release transmission member and a second arm 542 of the magnetic release transmission member.
  • One end of the first arm 541 of the magnetic release transmission member is transmission-coordinated with the armature 52, and the other end is bent and connected to the second arm 542 of the magnetic release transmission member.
  • the other end of the second arm 542 of the magnetic release transmission member is transmission-coordinated with the first arm 141 of the lock 14.
  • the magnetic release transmission member 54 is pivotally arranged at the connection between the first arm 541 of the magnetic release transmission member and the second arm 542 of the magnetic release transmission member.
  • the magnetic release transmission member 54 also includes a magnetic release transmission member reinforcement rib 543, the two ends of which are respectively connected to the first arm 541 of the magnetic release transmission member and the second arm 542 of the magnetic release transmission member, and the magnetic release transmission member reinforcement rib 543 improves the structural strength of the magnetic release transmission member 54, so that it can withstand the impact of the armature 52; the angle between the first arm 541 of the magnetic release transmission member and the second arm 542 of the magnetic release transmission member is ⁇ 90°.
  • the magnetic release transmission member reinforcement rib 543 is an arc rib, and its center coincides with the rotation center of the magnetic release transmission member 54.
  • the thermal-magnetic tripping mechanism of the present invention also achieves the following technical effects: the thermal tripping structure and the magnetic tripping structure are respectively driven and cooperated with the linkage rocker 15 and the lock 14 through the thermal tripping transmission member 55 and the magnetic tripping transmission member 54, thereby increasing the spacing between the transmission paths of the two, avoiding interference between the two, and facilitating layout and structural design.
  • thermal-magnetic tripping mechanism 5 As shown in FIGS. 19-20 , a second embodiment of the thermal-magnetic tripping mechanism 5 is shown:
  • its magnetic tripping structure is a direct-acting electromagnetic tripping device, which includes a coil winding 590, a coil frame 591, a yoke 592, a push rod 593, a fixed iron core and a moving iron core.
  • the coil winding 590 is sleeved on the coil frame 591, and the yoke 592 is connected to the coil frame 590 and arranged around the coil winding 590.
  • the push rod 593 serves as a magnetic tripping driving member and the axial direction of the push rod 593 is the same as the length direction of the bimetallic strip 56.
  • One end of the push rod 593 protrudes from the outside of the coil frame 590 as a driving end of the driving member, and the other end is slidably inserted in the middle of the coil frame 590 as a driving end.
  • the fixed iron core and the moving iron core are respectively arranged in the middle of the coil frame 590, and the push rod 593 is fixedly connected to the moving iron core;
  • the bimetallic strip mounting end of the bimetallic strip 56 is fixedly connected to the yoke 592, and the bimetallic strip 56 is fixedly connected to the yoke 592.
  • the metal sheet 56 is electrically connected to the coil winding 590.
  • the moving direction of the push rod 593 is perpendicular to the rotation axis direction of the magnetic tripping transmission member 54 and is the same as the axial direction of the push rod 593.
  • One end of the coil winding 590 is electrically connected to the incoming line conductive plate 36 , and the other end is electrically connected to the double metal bracket 58 ; the incoming line conductive plate 36 is also matched with the incoming line terminal 31 .
  • the yoke 592 is a U-shaped structure, which includes a yoke bottom plate and a yoke side plate, and the two yoke side plates are respectively connected to the two ends of the yoke bottom plate by bending and are respectively fixedly connected to the two ends of the coil frame 591. Further, the yoke bottom plate and the two terminals of the coil winding 590 are respectively located on the radial sides of the coil frame 590. Further, the two terminals of the coil winding 590 extend to the two sides of the axial ends of the coil frame 590.
  • the bimetal bracket 58 is fixedly connected to the yoke 592, one end of the bimetallic strip 56 is fixedly connected and electrically connected to the bimetal bracket 58, and the other end is transmission-coordinated with the thermal release transmission member 55.
  • the bimetal bracket 58 is an L-shaped structure as a whole, which includes a bracket horizontal portion 580 and a bracket vertical portion 581, one end of the bracket horizontal portion 580 is fixedly connected to one end of the yoke 592, and the other end is bent and connected to one end of the bracket vertical portion 581, and the other end of the bracket vertical portion 581 is fixedly connected and electrically connected to one end of the bimetallic strip 56.
  • the bracket horizontal portion 580 is fixedly connected to the yoke side plate of the yoke 592 close to the thermal release structure.
  • the magnetic release transmission member 54 needs to be improved as follows: the magnetic release transmission member 54 includes a first arm 541 of the magnetic release transmission member and a second arm 542 of the magnetic release transmission member, one end of the first arm 541 of the magnetic release transmission member is transmission-connected to the top rod 593 of the magnetic release structure, and the other end is bent and connected to one end of the second arm 542 of the magnetic release transmission member, and the other end of the second arm 542 of the magnetic release transmission member is transmission-matched with the lock buckle 14 of the operating mechanism 1 to drive the lock buckle 14 to rotate so that it releases the buckle match with the jump buckle 13. Further, the first arm 541 of the magnetic release transmission member and the second arm 542 of the magnetic release transmission member are V-shaped structures as a whole.
  • the angle between the first arm 541 of the magnetic tripping transmission member and the second arm 542 of the magnetic tripping transmission member is an obtuse angle.
  • the magnetic trip transmission member 54 further comprises a magnetic trip transmission member mounting portion 540, and the magnetic trip transmission member 54 is pivotally arranged by the magnetic trip transmission member mounting portion 540. Further, the magnetic trip transmission member mounting portion 542 is arranged on one end of the magnetic trip transmission member first arm 541 connected to the magnetic trip transmission member second arm 542.
  • the magnetic release transmission member 54 is an integrated structure, preferably formed by cutting and bending a metal plate.
  • the first support striker 2125 of the first support 212 cooperates with the magnetic tripping transmission member 54 as follows: when the magnetic tripping structure is actuated, the lock catch 14 is first driven to rotate so as to release the snap fit with the tripping catch 13, and then the first support 212 is driven to rotate through the first support striker 2125, so as to rotate the first support 212 in the disconnection direction.
  • the armature 52 drives the magnetic tripping transmission member 541 to rotate through the first arm 541 of the magnetic tripping transmission member, and the magnetic tripping transmission member 54 strikes the second arm 142 of the lock catch 14 through the second arm 542 of the magnetic tripping transmission member to rotate the lock catch 14 and release the snap fit with the tripping catch 13, and then the second arm 542 of the magnetic tripping transmission member strikes the first support striker 2125, so as to rotate the first support 212 in the disconnection direction, so as to accelerate the disconnection speed of the contact system 2.
  • the lock buckle 14 is hit by the magnetic release transmission member 54 and rotates, and the lock buckle 14 releases the snap fit with the jump buckle 13, and the lock buckle 14 further rotates and hits the first support receiving part 2125 of the first support 212 to rotate it in the disconnection direction.
  • the current-carrying conductive plate 33 further includes a conductive plate first middle section 331 and a conductive plate wiring section 330.
  • the conductive plate wiring section 330, the conductive plate first middle section 331, the conductive plate second middle section 332, the conductive plate matching section 333, the conductive plate third middle section 34 and the conductive plate double-gold adjustment section 335 are connected end to end in sequence;
  • the conductive plate first middle section 331, the conductive plate second middle section 332, the conductive plate matching section 333 and the conductive plate third middle section 334 form a square frame structure
  • the conductive plate wiring section 330 is bent relative to the conductive plate first middle section 331 to a side away from the conductive plate matching section 333
  • the conductive plate double-gold adjustment section 335 is bent relative to the conductive plate third middle section 334 to a side away from the conductive plate second middle section 332.
  • the conductive plate support arm 336 is connected to the conductive plate double-gold adjustment section 335 by bending and is located
  • the switch device further includes an outgoing line conductive plate 34 , and the outgoing line conductive plate 34 is used to connect the outgoing line terminal 32 and the contact system 2 in series.
  • the switch device further includes an arc striking plate 35 , one end of which is electrically connected to the outgoing conductive plate 34 , and the other end of which extends toward one side of the arc extinguishing chamber 4 .
  • the switch device of the present invention is a circuit breaker, which adopts the following layout:
  • the operating mechanism 1, contact system 2, incoming terminal 31, outgoing terminal 32 and arc extinguishing chamber 4 are all arranged in the circuit breaker housing (that is, the switch housing h); the operating part 11 of the operating mechanism 1, the contact system 2 and the arc extinguishing chamber 4 are arranged in sequence in the height direction of the circuit breaker; the incoming terminal 31 and the outgoing terminal 32 are located at both ends of the circuit breaker in the length direction of the circuit breaker; the contact system 2 and the arc extinguishing chamber 4 are located between the incoming terminal 31 and the outgoing terminal 32 in the length direction of the circuit breaker, and the first contact structure 21 and the second contact structure 22 of the contact system 2 are symmetrically and synchronously rotated in the length direction of the circuit breaker; the arc inlet of the arc extinguishing chamber 4 is relatively matched with the disconnection interval formed by the disconnection of the first contact structure 21 and the second contact structure 22 and faces the operating part 11.
  • the above layout of the circuit breaker is reasonable and compact, providing a larger assembly space for the arc extinguishing chamber 4, and a larger arc extinguishing chamber 4 can be installed, which is beneficial to improving the arc extinguishing performance and breaking performance of the circuit breaker; moreover, the first contact structure 21 and the second contact structure 22 are symmetrically and synchronously rotated, which can not only double the breaking speed of the contact system 2 but also double the opening distance, which is beneficial to improving the breaking performance and current carrying capacity of the short circuit.
  • the left-right direction of Figures 1-2 and 19 (that is, the direction from the incoming terminal 31 to the outgoing terminal 32) is the length direction of the circuit breaker
  • the up-down direction of Figure 1-2 (that is, the direction from the operating member 11 to the arc extinguishing chamber 4) is the height direction of the circuit breaker
  • the inside-outside direction of the paper of Figure 1-2 is the thickness direction of the circuit breaker.
  • the rotation centers of the operating member 11 , the first contact structure 21 and the second contact structure 22 are located at the three vertices of a triangle.
  • the above-mentioned triangle is an acute triangle.
  • the incoming terminal 31 , the first contact structure 21 , the second contact structure 22 and the outgoing terminal 32 are sequentially arranged side by side in the length direction of the circuit breaker.
  • the lock 14 of the operating mechanism 1, the first support 212 of the contact system 2 and the interlocking rocker 15 of the operating mechanism 1 are stacked in sequence in the thickness direction of the circuit breaker, that is, the lock 14 and the interlocking rocker 15 are located on both sides of the first support 212 in the thickness direction of the circuit breaker; the lock 14 and the interlocking rocker 15 cooperate to provide more selection space for the matching positions of the operating mechanism 1 and the thermal-magnetic tripping mechanism 5, which is convenient for layout and structural design.
  • the contact system 2 and the arc extinguishing chamber 4 are located on one side of the thermal-magnetic tripping mechanism 5 , and the incoming terminal 31 is located on the other side of the thermal-magnetic tripping mechanism 5 .
  • the thermal tripping structure and magnetic tripping structure of the thermal magnetic tripping mechanism 5 are arranged side by side in the height direction of the circuit breaker. Furthermore, in the length direction of the circuit breaker, the thermal tripping structure is arranged side by side with the contact system 2, and the magnetic tripping structure is arranged side by side with the arc extinguishing chamber 4.
  • the contact system 2 and the arc extinguishing chamber 4 are located on one side of the thermal-magnetic tripping mechanism 5 , and the outlet terminal 32 is located on the other side of the thermal-magnetic tripping mechanism 5 .
  • the thermal-magnetic tripping mechanism 5 is located between the contact system 2 and the incoming terminal 31 or between the contact system 2 and the outgoing terminal 32 in the length direction of the circuit breaker.
  • the thermal-magnetic tripping mechanism 5 is located between the arc extinguishing chamber 4 and the incoming terminal 31 or between the arc extinguishing chamber 4 and the outgoing terminal 32 in the length direction of the circuit breaker.
  • the thermal tripping structure and the magnetic tripping structure of the thermal-magnetic tripping mechanism 5 are located on both sides of the contact system 2 or on both sides of the arc extinguishing chamber 4 in the length direction of the circuit breaker.
  • the thermal trip transmission member 55 of the thermal magnetic trip mechanism 5 is located between the operating mechanism 1 and the bimetallic assembly. Further, the thermal trip transmission member 55 is located between the linkage rocker 15 of the operating mechanism 1 and the bimetallic strip 56 of the bimetallic assembly in the length direction of the circuit breaker.
  • the magnetic tripping structure is a snap-on electromagnetic tripping device, and the magnetic tripping transmission member 54 of the thermal magnetic tripping mechanism 5 is located between the operating mechanism 1 and the armature 52. Further, the magnetic tripping transmission member 54 is located between the lock 14 of the operating mechanism 1 and the armature 52 in the length direction of the circuit breaker. Further, the magnetic tripping transmission member 54 is located below the thermal tripping transmission member 55 in the height direction of the circuit breaker.
  • the magnetic tripping structure is a direct-acting electromagnetic release
  • the magnetic tripping transmission member 54 is located between the operating mechanism 1 and the top rod 593 of the direct-acting electromagnetic release.
  • the rotation centers of the lock 14 , the magnetic release transmission member 54 and the thermal release transmission member 55 are located at the three vertices of a triangle.
  • the above-mentioned triangle is an acute triangle.
  • the magnetic release structure is a direct-acting electromagnetic release
  • the above-mentioned triangle is an obtuse triangle
  • the vertex angle corresponding to the lock buckle 14 is an obtuse angle
  • the separator 23 of the contact system 2 is located between the first contact structure 21 and the second contact structure 22 in the length direction of the circuit breaker.
  • the arc extinguishing chamber 40 includes a plurality of arc extinguishing grids 40 , and the arc extinguishing grids 40 are sequentially arranged side by side and spaced apart in the length direction of the circuit breaker.
  • the magnetic tripping structure is a snap-on electromagnetic tripping device, which includes a yoke 51; as shown in Figure 19, the magnetic tripping structure is a direct-acting electromagnetic tripping device, which includes a yoke 592) are respectively located on both sides of the arc extinguishing chamber 4 in the length direction of the circuit breaker, which is beneficial to increase the speed at which the arc enters the arc extinguishing chamber 4 and improve the arc extinguishing efficiency; moreover, the yoke 51/592 serves as an arc-striking structure on one side of the arc extinguishing chamber 40, which is beneficial to simplify the internal structure of the circuit breaker and reduce the number of components.
  • the circuit breaker is a small circuit breaker, and its circuit breaker housing is a convex-shaped structure.
  • the operating member 11 of the operating mechanism 1 is arranged at the upper part of the convex-shaped structure, and the arc extinguishing chamber 4 is arranged at the lower part of the convex-shaped structure.
  • the arc extinguishing chamber 4 has a larger installation space, so that the circuit breaker can use a larger arc extinguishing chamber 4 to improve the arc extinguishing ability.
  • the incoming terminal 31 and the outgoing terminal 32 are located at the two ends of the lower part of the convex-shaped structure, and the contact system 2 is located at the junction of the upper and lower parts of the convex-shaped structure.
  • the thermal trip transmission member 55 of the thermal magnetic trip mechanism 5 is located at the upper part of the convex structure, the thermal trip structure of the thermal magnetic trip mechanism 5 extends from the lower part of the convex structure to the upper part, and the operating member 11, the thermal trip transmission member 55 and the upper end of the thermal trip structure are arranged side by side in sequence in the length direction of the circuit breaker;
  • the magnetic trip transmission member 54 and the magnetic trip structure are located at the lower part of the convex structure, the magnetic trip transmission member 54 is located between the contact system 2 and the incoming terminal 31 in the length direction of the circuit breaker, and the magnetic trip structure is located between the arc extinguishing chamber 4 and the incoming terminal 31 in the length direction of the circuit breaker.
  • the upper and lower parts of the convex structure refer to the
  • the present invention also discloses a circuit breaker device, which includes two or more circuit breakers used side by side, and the lock structures of adjacent circuit breakers are connected in transmission and arranged in linkage. Further, in adjacent circuit breakers, the lock 14 of one lock structure is connected in transmission and arranged in linkage with the linkage rocker 15 of another lock structure, for example, the first lock arm 141 of the lock 14 is connected in transmission with the second rocker arm 152 of the corresponding linkage rocker 15 through the linkage shaft 14-15.
  • the operating mechanism 1 is connected to the contact system 2 in a second embodiment.
  • the operating mechanism 1 is connected to the contact system 2 in a second embodiment.
  • the second embodiment of the contact system 2 further includes a sliding block 16, a first connecting rod 17-21, and a second connecting rod 17-22.
  • the first connecting rod 17-21 is hinged to the slider 16 and the first contact structure 21 at both ends
  • the second connecting rod 17-22 is hinged to the slider 16 and the second contact structure 22 at both ends.
  • the mechanism 1 drives the slider 16 to slide, and the slider 16 drives the first contact structure 21 and the second contact structure 22 to rotate synchronously toward or away from each other through the first sub-connecting rod 17-21 and the second sub-connecting rod 17-22.
  • the slider 16 is arranged to slide linearly.
  • the operating mechanism 1 may also be connected to either the first contact structure 21 or the second contact structure 22 instead of the slider 16.
  • the operating mechanism 1 drives the first contact structure 21 or the second contact structure 22 to rotate.
  • the first contact structure 21 or the second contact structure 22 drives the second contact structure 22 or the first contact structure 21 to rotate through the cooperation of the first sub-connecting rod 17-21, the slider 16 and the second sub-connecting rod 17-22, so as to realize the synchronous rotation towards or away from each other of the first contact structure 21 and the second contact structure 22; at this time, the slider 16, the first sub-connecting rod 17-21 and the second sub-connecting rod 17-22 become the intermediate transmission structure for realizing the linkage between the first contact structure 21 and the second contact structure 22, that is, the first contact structure 21 and the second contact structure 22 are indirectly connected by the intermediate transmission structure composed of the slider 16, the first sub-connecting rod 17-21 and the second sub-connecting rod 17-22.
  • the slider 16 drives the first contact structure 21 and the second contact structure 22 respectively through the first branch connecting rod 17-21 and the second branch connecting rod 17-22, so that the two rotate synchronously toward each other or rotate synchronously away from each other, and the transmission is stable and reliable.
  • the opening distance is increased, which significantly improves the breaking performance of the circuit breaker.
  • the first reset spring applies a force to the first support 212 to rotate the first contact structure 21 to its breaking position
  • the first contact structure 21 drives the second contact structure 22 to rotate to its breaking position through the first branch connecting rod 17-21, the slider 16 and the second branch connecting rod 17-22
  • the second reset spring 223 applies a force to the second support 222 to rotate the second contact structure 22 to its breaking position
  • the second contact structure 22 drives the first contact structure 21 to rotate to its breaking position through the second branch connecting rod 17-22, the slider 16 and the first branch connecting rod 17-21.
  • the slider 16, the first sub-link 17-21 and the second sub-link 17-22 are all located between the first contact structure 21 and the second contact structure 22, and the first sub-link 17-21 and the second sub-link 17-22 are arranged in a V shape; one end of the first contact structure 21 and the second contact structure 22 are pivotally arranged around the first center 21s and the second center 22s respectively, and the other end is closed or disconnected (that is, the first contact 2110 of the first contact structure 21 and the second contact 2210 of the second contact structure 22 cooperate with each other to close or disconnect); one end of the first sub-link 17-21 is hinged to the slider 16 and the other end is hinged to the first contact structure 21; one end of the second sub-link 17-22 is hinged to the slider 16 and the other end is hinged to the second contact structure 22.
  • first sub-link 17-21 is hinged to the slider 16 and the other end is hinged to the middle of the first contact structure 21, the middle of the first contact structure 21 preferably refers to the portion of the first contact structure 21 between the first center 21s and the first contact point 2110 of the second contact structure 21;
  • one end of the second sub-link 17-22 is hinged to the slider 16 and the other end is hinged to the middle of the second contact structure 22, the middle of the second contact structure 22 preferably refers to the portion of the second contact structure 22 between the second center 22s and the second contact point 2210 of the second contact structure 22.
  • the first sub-link 17-21 and the second sub-link 17-22 are symmetrically arranged, and the two are mutually symmetrical structures.
  • the first sub-link 17-21 and the second sub-link 17-22 are both hinged to the slider 16 around the third center 17s, that is, one end of the first sub-link 17-21 and the second sub-link 17-22 is coaxially rotatably arranged on the slider 16; the first sub-link 17-21 is hinged to the first contact structure 21 around the third sub-center 17-3s, and the second sub-link 17-22 is hinged to the second contact structure 22 around the fourth sub-center 17-4s.
  • the third center 17s, the first center 21s, and the second center 22s are respectively located at the three vertices of an isosceles triangle, and the first center 21s and the second center 22s are respectively located at the vertices corresponding to the two base angles of the isosceles triangle.
  • the middle parts of the first contact structure 21 and the second contact structure 22 are pivotally arranged around the first center 21s and the second center 22s respectively, one end of the first contact structure 21 is hinged to the first branch connecting rod 17-21, one end of the second contact structure 22 is hinged to the second branch connecting rod 17-22, and the other ends of the first contact structure 21 and the second contact structure 22 are closed or disconnected.
  • first sub-link 17-21 and the second sub-link 17-22 are respectively hinged to the first support 212 and the second support 222, that is, one end of the first sub-link 17-21 is hinged to the slider 16 and the other end is hinged to the first support 212, and one end of the second sub-link 17-22 is hinged to the slider 16 and the other end is hinged to the second support 222, which is beneficial to improving insulation.
  • the first connection mode of the operating mechanism 1 and the contact system 2 of the second embodiment is as follows: the operating mechanism 1 includes an operating member 11, a main connecting rod 12, a jumper 13, and a lock 14.
  • the jumper 13 and the lock 14 are respectively pivotally arranged on the first contact structure 21 or the second contact structure 22 and overlapped, and the two ends of the main connecting rod 12 are respectively hinged to the operating member 11 and the jumper 13. Further, the jumper 13 and the lock 14 are respectively pivotally arranged on the first support 212.
  • the working principle of the operating mechanism 1 is the same as the prior art in the field, and will not be described in detail here.
  • the jump buckle 13 and the lock buckle 14 are respectively pivotally disposed on the second support 222 .
  • the slider 16 is connected to the baffle 23 and moves synchronously. Furthermore, the slider 16 and the baffle 23 are an integrated structure, which is beneficial to reduce the number of parts of the circuit breaker and improve installation efficiency and working stability.
  • the slider 16 is slidably set on the circuit breaker housing; the first contact structure 21 and the second contact structure 22 are respectively pivoted on the circuit breaker housing (specifically, the first support 212 is pivoted on the circuit breaker housing through its first support shaft 2124, and the second support 222 is pivoted on the circuit breaker housing through its second support shaft 2222).
  • the second connection mode of the operating mechanism 1 and the contact system 2 of the second embodiment is as follows: the operating mechanism 1 includes an operating member 11, a main connecting rod 12, a jumper 13, a lock 14, a support member 18 and support member connecting rods 17-23, the operating member 11 and the support member 18 are respectively pivotally arranged, the jumper 13 and the lock 14 are respectively pivotally arranged on the support member 18, the two ends of the main connecting rod 12 are respectively hinged to the operating member 11 and the jumper 13, and the two ends of the support member connecting rods 17-23 are respectively hinged to the support member 18 and the slider 16. Further, the support member connecting rods 17-23 are hinged to the slider 16 around the center of the connecting rod slider.
  • first sub-link 17-21 is hinged to the slider 16 around the first sub-center 17-1s
  • second sub-link 17-22 is hinged to the slider 16 around the second sub-center 17-2s
  • first sub-center 17-1s and the second sub-center 17-2s are arranged in parallel and spaced apart.
  • the center of the connecting rod slider, the first sub-center 17-1s and the second sub-center 17-2s are located at the three vertices of a triangle.
  • the above triangle is an isosceles triangle
  • the first sub-center 17-1s and the second sub-center 17-2s are respectively located at the vertices of the isosceles triangle.
  • the first connecting rod 17-21 and the second connecting rod 17-22 are hinged to the slider 16 around the same center.
  • this is the third connection method between the operating mechanism 1 and the contact system 2 of the second embodiment: the difference between the third connection method and the second connection method lies in the connection structure between the operating mechanism 1 and the contact system 2, specifically: one end of the support member connecting rod 17-23 is hinged to the support member 18, and the other end is hinged to the first contact structure 21 or the second contact structure 22.
  • the support member connecting rod 17-23 is hinged to the first support 212 of the first contact structure 21.
  • the support member connecting rod 17-23 can be changed to be hinged to the second support 222 of the second contact structure 22.
  • this is a third embodiment of the contact system 2.
  • the middle parts of the first contact structure 21 and the second contact structure 22 are both pivotally arranged around the contact mechanism center 2s, that is, the two are coaxially arranged, one end of the first sub-link 17-21 is hinged to the slider 16 and the other end is hinged to one end of the first contact structure 21 around the third sub-center 17-3s, one end of the second sub-link 17-22 is hinged to the slider 16 and the other end is hinged to one end of the second contact structure 22 around the fourth sub-center 17-4s, the slider 16, the third sub-center 17-3s, the contact mechanism center 2s and the fourth sub-center 17-4s are respectively located at the four vertices of a quadrilateral.
  • the operating mechanism 1 includes an operating member 11, a main connecting rod 12, a tripping buckle 13, a locking buckle 14, a supporting member 18 and a supporting member connecting rod 17-23, the operating member 11 and the supporting member 18 are respectively pivotally arranged, the tripping buckle 13 and the locking buckle 14 are respectively pivotally arranged on the supporting member 18, the two ends of the main connecting rod 12 are respectively hinged with the operating member 11 and the tripping buckle 13, and the supporting member 18 is transmission-connected with the slider 16.
  • first sub-connecting rod 17-21 and the second sub-connecting rod 17-22 are both hinged with the supporting member 18 around the fifth center 19s through the connecting rod hinge shaft, that is, the first sub-connecting rod 17-21 and the second sub-connecting rod 17-22 are both hinged with the supporting member 18 through the connecting rod hinge shaft, and the axis of the connecting rod hinge shaft coincides with the fifth center 19s; the connecting rod hinge shaft serves as the slider 16.
  • the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as limiting the present invention.
  • the terms “first”, “second”, “third”, etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

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Abstract

La présente invention concerne le domaine des appareils électriques basse tension, et en particulier un disjoncteur. Le disjoncteur comprend un boîtier de disjoncteur, et un mécanisme d'actionnement, un système de contact, une borne d'entrée de fil, une borne de sortie de fil, une chambre d'extinction d'arc et un mécanisme de déclenchement thermomagnétique qui sont agencés dans le boîtier de disjoncteur. Le système de contact comprend une première structure de contact et une seconde structure de contact qui sont agencées de manière synchrone et rotative. Un élément d'actionnement du mécanisme d'actionnement, le système de contact et la chambre d'extinction d'arc sont agencés séquentiellement dans la direction de la hauteur du disjoncteur. Dans la direction de la longueur du disjoncteur, la borne d'entrée de fil et la borne de sortie de fil sont situées aux deux extrémités du disjoncteur, le système de contact et la chambre d'extinction d'arc sont situés entre la borne d'entrée de fil et la borne de sortie de fil, le système de contact et la chambre d'extinction d'arc sont situés sur un côté du mécanisme de déclenchement thermomagnétique, la borne d'entrée de fil ou la borne de sortie de fil est située sur l'autre côté du mécanisme de déclenchement thermomagnétique, et la première structure de contact et la seconde structure de contact sont disposées côte à côte. La disposition interne du disjoncteur est plus raisonnable, et un espace d'assemblage plus grand est prévu pour la chambre d'extinction d'arc.
PCT/CN2023/125270 2023-02-18 2023-10-18 Disjoncteur WO2024169215A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202310135654.4 2023-02-18
CN202310135688.3A CN118522611A (zh) 2023-02-18 2023-02-18 断路器
CN202310135688.3 2023-02-18
CN202310135654.4A CN118522616A (zh) 2023-02-18 2023-02-18 断路器

Publications (1)

Publication Number Publication Date
WO2024169215A1 true WO2024169215A1 (fr) 2024-08-22

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Application Number Title Priority Date Filing Date
PCT/CN2023/125270 WO2024169215A1 (fr) 2023-02-18 2023-10-18 Disjoncteur

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Country Link
WO (1) WO2024169215A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016042414A (ja) * 2014-08-14 2016-03-31 富士電機株式会社 回路遮断器
CN107146745A (zh) * 2016-03-01 2017-09-08 浙江正泰电器股份有限公司 电子式漏电断路器
CN107863281A (zh) * 2017-12-07 2018-03-30 厦门安达兴电气集团有限公司 一种转动式联动双动触头机构及开关断路器
CN110416035A (zh) * 2019-08-26 2019-11-05 厦门安达兴电气集团有限公司 一种交直流通用型塑壳断路器
CN112992620A (zh) * 2019-12-14 2021-06-18 浙江正泰电器股份有限公司 断路器的操作机构
CN114068262A (zh) * 2020-08-03 2022-02-18 天津首瑞智能电气有限公司 一种低压断路器
CN114914131A (zh) * 2022-05-31 2022-08-16 上海电器科学研究所（集团）有限公司 断路器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016042414A (ja) * 2014-08-14 2016-03-31 富士電機株式会社 回路遮断器
CN107146745A (zh) * 2016-03-01 2017-09-08 浙江正泰电器股份有限公司 电子式漏电断路器
CN107863281A (zh) * 2017-12-07 2018-03-30 厦门安达兴电气集团有限公司 一种转动式联动双动触头机构及开关断路器
CN110416035A (zh) * 2019-08-26 2019-11-05 厦门安达兴电气集团有限公司 一种交直流通用型塑壳断路器
CN112992620A (zh) * 2019-12-14 2021-06-18 浙江正泰电器股份有限公司 断路器的操作机构
CN114068262A (zh) * 2020-08-03 2022-02-18 天津首瑞智能电气有限公司 一种低压断路器
CN114914131A (zh) * 2022-05-31 2022-08-16 上海电器科学研究所（集团）有限公司 断路器

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