CN212485237U

CN212485237U - Circuit breaker with leakage protection function

Info

Publication number: CN212485237U
Application number: CN202021850295.9U
Authority: CN
Inventors: 彭全昌; 刘永华; 李连昌
Original assignee: Jaecele Electric Co ltd
Current assignee: Jaecele Electric Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-02-05
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a take earth leakage protection function's circuit breaker, including casing, circuit breaker module and earth leakage protection module, the casing is at least including three first cavity, second cavity, the third cavity of arranging in proper order, separate through first base plate between first cavity and the second cavity, separate through the second base plate between second cavity and the third cavity, trip coil subassembly, circuit board setting are in first cavity, second contact subassembly, arc extinguishing subassembly set up in the second cavity, circuit breaker module sets up in the third cavity, first contact subassembly and second contact subassembly link mutually, the linkage cooperation between trip coil subassembly and the hasp, zero sequence mutual-inductor arranges in wherein two of first cavity, second cavity, third cavity simultaneously at least. The utility model provides a less, the more compact circuit breaker of area earth leakage protect function of inner structure of volume.

Description

Circuit breaker with leakage protection function

Technical Field

The utility model relates to a take earth leakage protection function's circuit breaker.

Background

The circuit breaker with the electric leakage protection function in the prior art generally comprises a circuit breaker module and an electric leakage protection module, the circuit breaker module and the electric leakage protection module are respectively arranged in two adjacent cavities of the circuit breaker, the electric leakage protection module comprises components such as a zero sequence transformer, an auxiliary contact support, a circuit board and a tripping coil assembly, flexible wires used for L-phase and N-phase current carrying are respectively arranged in a hole center of the zero sequence transformer in a penetrating mode, the circuit breaker module comprises components such as a jump buckle, a lock catch, a handle, a reset device and a main contact support, the components are arranged between the tripping coil assembly and the lock catch in a penetrating mode, linkage is achieved through connecting rods of the two cavities, and linkage is achieved through penetrating through transmission components in the two cavities between the main contact support and the auxiliary contact support.

The traditional circuit breaker has the disadvantages of unreasonable internal structure layout, more occupied space and larger improved space.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a less, the more compact circuit breaker of area earth leakage protect function of inner structure of volume.

In order to achieve the above object, the present invention provides a circuit breaker with leakage protection function, comprising a housing, a circuit breaker module and a leakage protection module, wherein the circuit breaker module comprises a latch, a first contact assembly, the leakage protection module comprises a second contact assembly, an arc extinguishing assembly, a zero sequence transformer, a trip coil assembly, and a circuit board, the housing at least comprises three first cavity, a second cavity, and a third cavity arranged in sequence, the first cavity and the second cavity are separated by a first substrate, the second cavity and the third cavity are separated by a second substrate, the trip coil assembly and the circuit board are arranged in the first cavity, the second contact assembly and the arc extinguishing assembly are arranged in the second cavity, the circuit breaker module is arranged in the third cavity, and the first contact assembly and the second contact assembly are linked with each other, the tripping coil assembly is in linkage fit with the lock catch, and the zero sequence transformers are arranged in at least two of the first cavity, the second cavity and the third cavity at the same time.

The effect that above-mentioned setting brought is: the utility model discloses with earth leakage protection module's trip coil subassembly, circuit board and second contact subassembly, the arc extinguishing subassembly, zero sequence mutual-inductor sets up respectively in first cavity and second cavity, make zero sequence mutual-inductor can arrange in simultaneously between two cavitys at least, and the linkage cooperation between hasp and the trip coil subassembly, make the hasp can be realized the unblock by trip coil subassembly drive, and arrange first cavity in simultaneously at least with zero sequence mutual-inductor, the second cavity, in wherein two of third cavity, the inner space that can each cavity of make full use of, it is more reasonable to the utilization of circuit breaker inner space, can structure compacter, and then reduce the whole volume of circuit breaker, furthermore, can be isolated with other components of earth leakage protection module with the circuit board through first base plate, can improve the security.

Further, one side of the first substrate corresponding to the second cavity is provided with a pocket groove, the back of the pocket groove extends and protrudes towards the first cavity, the zero sequence transformer is embedded in the pocket groove, the second substrate is provided with a through hole for the zero sequence transformer to penetrate through the third cavity, and the pocket groove is provided with a threading hole for communicating the first cavity and the second cavity.

The effect that above-mentioned setting brought is: because the pocket groove is arranged towards the second cavity, and the back part of the pocket groove extends and protrudes towards the first cavity, when one side of the zero sequence transformer is embedded in the pocket groove, the other side of the zero sequence transformer can penetrate through the through hole and is arranged in the third cavity, so that the whole zero sequence transformer can be arranged among the first cavity, the second cavity and the third cavity in a spanning manner, the zero sequence transformer can be better positioned, the internal structure can be more compact, and the volume can be reduced; the arrangement of the threading holes is convenient for wiring and electric connection between the zero sequence transformer and the circuit board.

Furthermore, the hole center of the zero sequence transformer faces to the direction perpendicular to the arrangement direction of the first cavity, the second cavity and the third cavity.

The effect that above-mentioned setting brought is: because the axial width of the zero sequence transformer is generally narrow, the direction of the hole center of the zero sequence transformer is perpendicular to the arrangement direction of the first cavity, the second cavity and the third cavity (namely the width direction of the circuit breaker), more internal space can be reserved for the first cavity, the second cavity and the third cavity, the diameter of the zero sequence transformer can be made larger, and the sensitivity of leakage protection is improved.

Furthermore, the earth leakage protection module comprises a first current-carrying component used for connecting the wire holder and the arc extinguishing assembly, the first current-carrying component is formed by machining a hard metal plate, and the first current-carrying component is arranged in the second cavity and penetrates through the hole center of the zero sequence transformer.

The effect that above-mentioned setting brought is: the first current-carrying component machined and formed by the hard metal plate can form a good positioning effect on the zero sequence transformer when penetrating through the hole center of the zero sequence transformer, can keep the zero sequence transformer embedded in the pocket groove, is not easy to shake and separate, and is more convenient for penetrating assembly of the zero sequence transformer.

Furthermore, the earth leakage protection module comprises a second current-carrying component, the second current-carrying component comprises a first current-carrying portion, a second current-carrying portion, a current sampling portion and an arc striking component, the first current-carrying portion and the second current-carrying portion are respectively welded at two ends of the current sampling portion, the first current-carrying portion is used for being connected with a wire holder, the second current-carrying portion is connected with a fixed contact of the second contact assembly, the current sampling portion is composed of a manganin resistor, two connecting terminals are arranged at two ends, corresponding to the current sampling portion, of the second current-carrying component, and the arc striking component is welded with the second current-carrying portion.

The effect that above-mentioned setting brought is: the current sampling part composed of the manganin resistor has smaller resistance value, the current sampling part, the first current-carrying part, the second current-carrying part and the arc striking part are welded into a whole, so that the second current-carrying part can be used for normal current-carrying purposes of the leakage protection module, two wiring terminals can also be electrically connected with wiring of a circuit board, the load current on the current sampling part can be collected through a micro control chip on the circuit board and then can be converted into a digital signal which can be identified and applied, the subsequent calculation of power consumption information such as current, voltage, power consumption and the like is convenient, the arc striking part can also be used as a component of an arc extinguishing assembly, on one hand, the power consumption safety can be improved, on the other hand, the change of an internal mechanism of the circuit breaker is smaller, the internal space of the circuit breaker, especially the space of a second cavity can be saved to the maximum, the circuit breaker has the advantages that the size of the circuit breaker is more compact and small, and the cost can be reduced by adopting the current sampling part of the manganin resistor.

Furthermore, a slot for the second current-carrying component to be embedded and positioned is formed in one side, corresponding to the second cavity, of the first substrate, the two wiring terminals extend out in the lateral direction of the other side of the first substrate, a through hole for the two wiring terminals to penetrate through to the other side of the first substrate is formed in the position of the inner wall of the bottom of the slot, the inner wall of one side of the slot is limited by a partition integrally formed on one side of the first substrate, a U-shaped notch is formed between the second current-carrying component and the arc striking component in a connected mode, the partition is embedded in the notch, the second current-carrying component and the arc striking component are arranged close to two sides of the partition respectively, one end of the arc striking component is connected with the second current-carrying component, and a clamping groove matched with the other end of the arc striking component in a clamped and.

The effect that above-mentioned setting brought is: the second current-carrying component can be embedded in the slot on one side of the first substrate for positioning, and the two wiring terminals can pass through the through holes on the inner wall of the slot bottom and penetrate out of the other side of the first substrate, so that the wiring terminals can be conveniently connected with the circuit board in the first cavity in a wiring and electric mode, the positioning effect of the second current-carrying component and the first substrate can be improved, the circuit layout in the circuit breaker is convenient, and the possibility of short circuit between the circuit board and the second current-carrying component can be reduced; the side wall of one side of the partition plate forms the inner wall of one side of the slot, and the partition plate can form isolation between the second current-carrying part and the arc-striking part, so that the second current-carrying part and the arc-striking part can be close to each other without short circuit, the safety can be improved, and the internal components of the second cavity are more compact; the clamping groove at the end part of the partition board is matched with the other end of the arc striking component to carry out clamping and positioning, so that the other end of the arc striking component is not easy to shake, and the positioning reliability of the arc striking component is improved.

Further, one side that first base plate corresponds the second cavity rotates and is provided with second drive component, and first base plate opposite side rotates and is provided with first drive component, first drive component is including first extension arm and second extension arm, first extension arm be used for with the trip coil subassembly in the first cavity movable iron core push fit, second drive component is including third extension arm and fourth extension arm, the third extension arm with constitute push fit through the head rod of wearing to establish in first base plate both sides between the second extension arm, with fourth extension arm push fit including the second connecting rod, the second connecting rod passes behind the second base plate and is fixed with the hasp cooperation, be provided with in the first cavity with first drive component complex resetting means.

The effect that above-mentioned setting brought is: through the push fit between the first extension arm and the movable iron core, between the second extension arm and the third extension arm, and between the fourth extension arm and the second connecting rod, the tripping coil assembly can sequentially drive the first transmission member, the second transmission member and the lock catch to move when the tripping coil assembly acts, so that the first contact assembly can be unlocked, and the circuit breaker is opened. Because first drive member and second drive member set up respectively in the both sides of first base plate, and the fixed cooperation of second connecting rod and hasp for still can guarantee the linkage between the two when being separated by a cavity between trip coil assembly and the hasp, overall structure is simple, and the linkage effect is stable, can also make the first extension arm of first drive member continuously compress tightly on movable core through resetting means, is convenient for drop off and resets.

Furthermore, a groove is formed in the other side of the first substrate, a table top is arranged at a position adjacent to the groove, the first transmission member comprises a cylindrical first base, the first extension arm and the second extension arm are respectively arranged at two axial ends of the first base, the first extension arm is close to the table top, the second extension arm is close to the inner wall of the bottom of the groove, the tripping coil assembly is arranged in the groove, and the second extension arm is arranged between the tripping coil assembly and the inner wall of the bottom of the groove.

The effect that above-mentioned setting brought is: the tripping coil assembly is arranged in the groove, and the second extension arm is arranged between the tripping coil assembly and the inner wall of the bottom of the groove, so that the internal structure of the first cavity is more compact, and the overall size of the circuit breaker is reduced.

Further, the inner wall is provided with curved protruding muscle at the bottom of the recess, the shape of protruding muscle and the movement track looks adaptation of second extension arm, the second extension arm is followed protruding muscle surface motion slides, the inner wall is provided with banding notch at the bottom of the recess, and the one end of notch sets up towards the second extension arm, and the other end of notch is provided with the spliced pole, resetting means is including the extension spring that sets up in the notch, the tip of second extension arm is provided with the hanging hole, the both ends of extension spring articulate with hanging hole and spliced pole respectively mutually.

The effect that above-mentioned setting brought is: the convex ribs can reduce the friction force between the second extension arm and the inner wall of the bottom of the groove, reduce the abrasion and improve the rotation effect of the first transmission member; the notch can accommodate the tension spring to a certain extent, can prevent the tension spring from being excessively bent, ensures the stability of the elastic acting force direction of the tension spring, and can prevent the interference between the spring and the tripping coil assembly; the arrangement of the hanging holes and the connecting columns improves the positioning effect of the two ends of the spring.

Further, the second transmission member includes a second base portion with a disc shape, the third extension arm and the fourth extension arm are distributed and arranged on the outer circumferential surface of the second base portion, the third extension arm and the fourth extension arm simultaneously move and slide along one side surface of the first substrate, the first connecting rod is arranged at the end portion of the third extension arm, one side of the first substrate is provided with a notch, the end portion of the fourth extension arm is located at the notch, and the end portion of the second connecting rod extends into the notch.

The effect that above-mentioned setting brought is: stability when improving the second drive component and rotating to make the second connecting rod can not with first base plate opposite side takes place the contact, be difficult to the transmission between second connecting rod and the fourth extension arm and become invalid, improve the linkage effect between second connecting rod tip and the fourth extension arm.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

fig. 2 is a partial cross-sectional view of an embodiment of the invention;

fig. 3 is an assembly view of the other side of the first base plate according to an embodiment of the present invention;

fig. 4 is an assembly view of a first current carrying component and a zero sequence transformer in an embodiment of the present invention;

fig. 5 is a structural view of a second current-carrying member in an embodiment of the present invention;

FIG. 6 is an exploded view of a second current carrying component according to an embodiment of the present invention;

fig. 7 is an assembly view of one side of a first substrate in an embodiment of the present invention;

fig. 8 is a structural diagram of a side of the second substrate facing the second cavity in the embodiment of the present invention;

fig. 9 is an assembly view of a first transmission member in an embodiment of the invention;

fig. 10 is a view showing a structure of one side of the first substrate according to the embodiment of the present invention;

FIG. 11 is a structural diagram of an operating mechanism according to an embodiment of the present invention;

fig. 12 is a structural view of the other side of the first substrate according to the embodiment of the present invention;

FIG. 13 is a view showing a structure of a first transmission member according to an embodiment of the present invention;

FIG. 14 is a block diagram of a second drive member in an embodiment of the invention;

fig. 15 is a partial exploded view of an embodiment of the present invention, fig. 1;

fig. 16 is a partial exploded view of an embodiment of the present invention, fig. 2.

Detailed Description

The embodiment of the circuit breaker with earth leakage protection function of the present invention is shown in fig. 1-16: the circuit breaker module mainly comprises an operating mechanism, a first contact assembly and other components, wherein the operating mechanism comprises a lock 1111, a jump 1112, a handle 1113 and other components, the first contact assembly comprises a first contact support 1121, a first moving contact 1122 arranged on the first contact support 1121 and a first fixed contact matched with the first moving contact 1122 for on-off, the earth leakage protection module mainly comprises a second contact assembly, an arc extinguishing assembly 122, a zero sequence transformer 123, a trip coil assembly 124, a circuit board 125 and other components, the second contact assembly comprises a second contact support 1211, a second moving contact 1212 arranged on the second contact support 1211 and a second moving contact fixed contact 1213 matched with the second moving contact 1212 for on-off, the zero sequence transformer 123 is composed of a magnetic ring and a secondary winding wound on the magnetic ring, trip coil assembly 124 includes a movable core 1241.

The housing 10 at least includes a first cavity 101, a second cavity 102, and a third cavity 103 arranged in sequence, the first cavity 101 and the second cavity 102 are separated by a first substrate 104, the second cavity 102 and the third cavity 103 are separated by a second substrate 105, the trip coil assembly 124 and the circuit board 125 are disposed in the first cavity 101, the second contact assembly and the arc extinguishing assembly 122 are disposed in the second cavity 102, the circuit breaker module is disposed in the third cavity 104, the first contact assembly and the second contact assembly are in linkage fit, specifically, a synchronous motion is realized between a first contact support 1121 of the first contact assembly and a second contact support 1211 of the second contact assembly through a connecting member, a reset spring is connected between the first contact support 1121 or the second contact support 1211 and the housing 10, the trip coil assembly 124 and the 1111 are in linkage lock fit, the zero sequence transformers 123 are disposed in at least two of the first cavity 101, the second cavity 102, and the third cavity 103. Because the space of the first cavity 101 is relatively abundant, the circuit board 125 is arranged in the first cavity 101, so that the circuit board 125 can be made larger, more chips and circuit elements can be integrated, and the functions of the circuit breaker, such as power utilization information detection, internet of things and the like, can be conveniently expanded.

When the circuit breaker is switched on, the handle 1113 drives the trip 1112 to be buckled with the latch 1111 and simultaneously keep the circuit in a connected state, and when electric leakage occurs, the latch 1111 is driven to unlock the trip 1112 based on the action of the movable iron core 1241 of the trip coil assembly 124, and the first contact support 1121 and the second contact support 1211 are driven to simultaneously reset by the reset spring so as to break the circuit.

The zero sequence transformer 123 can be simultaneously disposed in the first cavity 101, the second cavity 102, and the third cavity 103, but in order to better position the zero sequence transformer 123 and improve the safety of the product, a pocket 1041 is disposed on a side of the first substrate 104 corresponding to the second cavity 102, a back of the pocket 1041 extends and protrudes toward the first cavity 101 (as shown in fig. 2 and 3), the zero sequence transformer 123 is embedded in the pocket 1041, a through hole 1051 for the zero sequence transformer 123 to penetrate through the third cavity 103 is disposed on the second substrate 105, a threading hole 10411 communicating the first cavity 101 and the second cavity 102 is disposed in the pocket 1041, the pocket 1041 can position the zero sequence transformer 123 and can also isolate the zero sequence transformer from the component disposed in the first cavity 101, so as to improve the safety, a back of the pocket 1041 extends and protrudes toward the first cavity 101, so that when the zero sequence transformer 123 is embedded in the pocket 1041, except being arranged in the first cavity 101 and the second cavity 102 at the same time, the circuit breaker also occupies a part of the space of the first cavity 101, thereby fully utilizing the internal space of the cavities and reducing the whole volume of the circuit breaker product. The threading hole 10411 may be used for a secondary winding of the zero sequence transformer 123 to penetrate between the first cavity 101 and the second cavity 102, so as to facilitate wiring with the circuit board 125, and a control circuit capable of converting an induced current of the secondary winding into a current signal and controlling the operation of the thyristor is integrated on the circuit board 125.

The hole centers of the zero sequence transformer 123 may be arranged toward the arrangement direction of the first cavity 101, the second cavity 102, and the third cavity 103, but since the axial width of the zero sequence transformer 123 is generally narrow, in order to occupy the inner space of the cavities as little as possible and improve the utilization rate of the space, the hole centers of the zero sequence transformer 123 are preferably oriented perpendicular to the arrangement direction of the first cavity 101, the second cavity 102, and the third cavity 103.

The earth leakage protection module comprises a first current-carrying component 126 for connecting one of the N-phase wire holders with the arc extinguishing assembly 122, wherein the first current-carrying component 126 is formed by machining a hard metal plate, and the first current-carrying component 126 is arranged in the second cavity 102 and penetrates through the hole center of the zero sequence transformer. The first current-carrying component 126 is used for carrying current of an N-phase, and of course, in addition to the first current-carrying component 126, the circuit breaker module further includes a flexible conductor (not shown in the figure) for carrying current of an L-phase, which penetrates through a hole center of the zero sequence transformer 3, and the flexible conductor can be inserted between the first cavity 101 and the second cavity 102 through the through hole 1051, so as to facilitate the insertion and arrangement of a line.

As shown in fig. 5, the first current-carrying component 126 includes a first connecting portion 1261, a second connecting portion 1262, and a third connecting portion 1263, the first connecting portion 1261 and the third connecting portion 1263 are welded or integrally formed at two ends of the second connecting portion 1262, the second connecting portion 1262 is inserted into a hole center of the zero sequence transformer 123, the first connecting portion 1261 and the third connecting portion 1263 are respectively matched with two axial sides of the zero sequence transformer 123 for limiting, the first connecting portion 1261, the second connecting portion 1262, and the third connecting portion 1263 are integrally formed and are formed by bending the same metal plate, the first connecting portion 1261 and the third connecting portion 1263 are bent toward a radial direction of the zero sequence transformer 123 for limiting the zero sequence transformer 123 and are also conveniently inserted, an arc-striking piece 1221 is welded to the first connecting portion 1261, the arc-striking piece 1221 is a component of the arc-extinguishing assembly 122, the third connecting portion 1263 is a wiring board, the wiring board is a component of the wiring base, the first current-carrying part 126 and the arc striking piece 1221 are welded together, processing and assembly are facilitated, the number of parts of the leakage protection module can be reduced, and the overall structure is more compact.

The pocket groove 1041 comprises an arc-shaped inner concave wall 10412 matched with the outer contour of the zero sequence transformer 123, so that the contact area between the pocket groove 1041 and the zero sequence transformer 123 is increased, and the positioning stability is improved.

As shown in fig. 5 and 6, the earth leakage protection module further includes a second current-carrying member 127, the second current-carrying member 127 includes a first current-carrying portion 1271, a second current-carrying portion 1272, a current sampling portion 1273, and an arc striking member 1274, the first current-carrying portion 1271 and the second current-carrying portion 1272 are respectively welded to two ends of the current sampling portion 1273, the first current-carrying portion 1271 is used for connecting to another N-phase connection socket, the second current-carrying portion 1272 is connected to a second fixed contact 1213 of the second contact assembly, the current sampling portion 1273 is made of a manganese copper resistor, two terminals 12731 are provided at two ends of the second current-carrying member 127 corresponding to the current sampling portion 1273, the arc striking member 1274 is welded to the second current-carrying portion 1272, the arc striking member 1274 and the second current-carrying member 127 are welded into a whole, the terminals are convenient to assemble, the arc striking performance is improved, the two current-carrying members 12731 are preferably integrally formed at two ends of the current sampling portion 1273, in other examples, the two terminals 12731 may be integrally formed at the ends of the first and second

current carrying portions

1271 and 1272 close to the current sampling portion 1273, respectively. The micro control chip can collect the load current at the two ends of the current sampling part 1273, the collected load current can be converted into a digital signal through the current calculating circuit, and a specific current value can be obtained finally according to calculation.

One end of the first current carrying part 1271, which is connected with the current sampling part 1273, is provided with an inclined section 12711 which extends obliquely in the lateral direction, the other end of the first current carrying part 1271 is bent downwards and is integrally connected with a wiring board 12712, the wiring board 12712 is a component of a wiring base and is used for N-phase wiring, and the arrangement of the inclined section 12711 ensures that the second current carrying part 127 has a certain limiting function in the length direction, so that the second current carrying part is convenient to be positioned and matched with the first substrate 104, and the position layout of the wiring base is also convenient.

One end of the second current-carrying portion 1272 is connected with the current sampling portion 1273, the other end of the second current-carrying portion 1272 is bent to form a connecting sheet 1276, the connecting sheet 1276 is provided with a first welding end surface 1276a and a second welding end surface 1276b which are arranged oppositely, the second fixed contact 1213 is welded on the first welding end surface 1276a, the second fixed contact 1213 adopts a silver point, the second welding end surface 1276b is welded with the arc striking component 1274 in a matching manner, the areas of the welding positions can be increased due to the arrangement of the first welding end surface 1276a and the second welding end surface 1276b, the welding effect is improved, the welding of the second fixed contact 1213 and the arc striking component 1274 is not interfered with each other, and the production and the processing are convenient.

The end of the connecting piece 1276 forms a third welding end face 1276c, one end of the arc ignition component 1274 welded with the connecting piece 1276 is bent to form an L-shaped notch 12741, two adjacent inner walls of the L-shaped notch 12741 are respectively matched and welded with the second welding end face 1276b and the third welding end face 1276c, the shape of the L-shaped notch 12741 is matched with one end of the arc ignition component 1274, and then the two welding end faces are welded, so that the welding stability can be improved.

A slot 1042 for the second current-carrying component 127 to be inserted and positioned is disposed on one side of the first substrate 104 corresponding to the second cavity 102, two terminals 12731 extend laterally toward the other side of the first substrate 104, a through hole 1043 is disposed at a bottom inner wall of the slot 1042 for the two terminals 12731 to respectively penetrate through the other side of the first substrate 104, an inner wall of one side of the slot 1042 is defined by a partition 1044 integrally formed on one side of the first substrate 104, the inclined section 12711 extends toward the other side of the first substrate 104, a notch is disposed at a position of the slot 1042 corresponding to the inclined section 12711 for matching and embedding, the other end of the arc-striking component 1274 is disposed approximately parallel to the second current-carrying component 127, a U-shaped notch 1275 is connected between the second current-carrying component 127 and the arc-striking component 1274, the partition 1044 is embedded in the notch 1275, and the second current-carrying component 127 and the arc-striking component 1274 are respectively abutted against two sides of the partition 1044, one end of the arc ignition component 1274 is connected with the second current carrying part 1272, a clamping groove 10441 which is matched, clamped and positioned with the other end of the arc ignition component 1274 is arranged at the end part of the partition board 1044, one end of the arc ignition component 1274 is connected with the second current carrying part 1272, and the other end of the arc ignition component 1274 is clamped in the clamping groove 10441, so that the other end of the arc ignition component 1274 can be prevented from shaking.

A second transmission member 22 is rotatably disposed on one side of the first substrate 104 corresponding to the second cavity 102, a first transmission member 21 is rotatably disposed on the other side of the first substrate 104, the first transmission member 21 comprises a first extension arm 211 and a second extension arm 212, the first extension arm 211 is adapted to be in a push-fit engagement with the movable iron core 1241 of the trip coil assembly 124 in the first chamber 101, the second transmission member 22 comprises a third extension arm 221 and a fourth extension arm 222, the third extension arm 221 and the second extension arm 212 form a push fit by the first connection rods 23 penetrating through the two sides of the first substrate 104, the second connecting rod 24 is disposed in the fourth extending arm 222, and the second connecting rod 24 passes through the second substrate 105 and then is fixed to the latch 1111 in a matching manner, the second connecting rod 24 and the latch 1111 may be integrally formed, and a reset device is disposed in the first cavity 101 and is engaged with the first transmission member 21.

When the movable iron core 1241 moves under the electromagnetic action, the first extension arm 211 can push the first transmission member 21 to rotate integrally, then the second extension arm 212 of the first transmission member 21 drives the third extension arm 221 and the second transmission member 22 to rotate integrally through the first connecting rod 23, and then the second connecting rod 24 pushes the lock 1111 to rotate towards the tripping direction, so that the tripping is realized, and the circuit breaker is tripped.

A groove 1045 is formed on the other side of the first substrate 104, a table-board 1046 is arranged adjacent to the groove 1045, the first transmission member 21 includes a cylindrical first base 213, a rotating shaft is inserted in the axial center of the first base 213, the first extension arm 211 and the second extension arm 213 are respectively disposed at two axial end positions of the first base 213, the first extension arm 211 is disposed near the table-board 1046, the second extension arm 213 is disposed near the bottom inner wall of the recess 1045, the trip coil assembly 124 is disposed in the recess 1045, the second extension arm 213 is disposed between the trip coil assembly 124 and the bottom inner wall of the recess 1045, a mounting plate 1047 which is matched with the two ends of the trip coil assembly 124 for mounting and positioning is arranged in the groove 1045, the trip coil assembly 124 and the second extension arm 213 are spaced apart by a gap by the mounting plate 1047 to prevent interference.

Inner wall is provided with curved protruding muscle 1048 at the bottom of recess 1045, the shape of protruding muscle 1048 and the motion trail looks adaptation of second extension arm 213, second extension arm 213 is followed protruding muscle 1048 surface motion slides, and protruding muscle 1048 can use and separate the certain distance between second extension arm 213 and the recess 1045 end inner wall, reduces the wearing and tearing between second extension arm 213 and the first base plate 104, protruding muscle 1048 one end be provided with second extension arm 213 cooperation spacing protruding 1049, spacing protruding 1049 can only set up in protruding muscle 1048's one end department, also can set up simultaneously in protruding muscle 1048's both ends department.

The inner wall is provided with banding notch 1050 at the bottom of recess 1045, and notch 1050 has two inclined planes of relative setting, and the one end of notch 1050 sets up towards second extension arm 213, and the other end of notch 1050 is provided with spliced pole 1051, resetting means is including setting up extension spring 3 in notch 1050, the tip of second extension arm 213 is provided with hanging hole 2131, the both ends of extension spring 3 articulate with hanging hole 2131 and spliced pole 1051 respectively mutually.

The first extension arm 211 is provided with an arc protrusion 2111 in contact fit with the movable iron core 1241, and the arc protrusion 2111 enables the first extension arm 211 to keep good contact with the movable iron core 1241 when rotating to various angles, so that the stress is more stable, the abrasion between the first extension arm and the movable iron core 1241 can be reduced, and the using effect is improved.

The second transmission member 22 includes a second base 223 having a disc shape, the third extension arm 221 and the fourth extension arm 222 are distributed on an outer circumferential surface of the second base 223, a rotation shaft is disposed through a center position of the second base 223, the third extension arm 221 and the fourth extension arm 222 simultaneously move and slide along a side surface of the first substrate 104, the first connecting rod 23 is disposed at an end portion of the third extension arm 221, a gap 1052 is disposed at one side of the first substrate 104, an end portion of the fourth extension arm 222 is located at the gap 1052, an end portion of the second connecting rod 24 extends into the gap 1052 (a position lower than an end surface of the first substrate 104 in sliding fit with the second transmission member 22), and the gap 1052 is further configured to receive a second contact assembly.

The first base plate 104 is provided with an arc-shaped guide slot for the first connecting rod 23 and/or the second connecting rod 24 to pass through.

The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a take earth leakage protection function's circuit breaker, including casing, circuit breaker module and earth leakage protection module, circuit breaker module is including hasp, first contact subassembly, the earth leakage protection module includes second contact subassembly, arc extinguishing subassembly, zero sequence transformer, trip coil subassembly, circuit board, the casing is at least including three first cavity, second cavity, the third cavity of arranging in proper order, separate through first base plate between first cavity and the second cavity, separate its characterized in that through the second base plate between second cavity and the third cavity: the tripping device comprises a tripping coil assembly, a circuit board, a circuit breaker module, a first contact assembly, a second contact assembly, an arc extinguishing assembly, a lock catch and a zero sequence mutual inductor, wherein the tripping coil assembly and the circuit board are arranged in a first cavity, the second contact assembly and the arc extinguishing assembly are arranged in a second cavity, the circuit breaker module is arranged in a third cavity, the first contact assembly and the second contact assembly are linked, the tripping coil assembly and the lock catch are in linkage fit, and the zero sequence mutual inductor is arranged in two of the first cavity, the second cavity and the third cavity at.

2. A residual current circuit breaker according to claim 1, characterized in that: one side that first base plate corresponds the second cavity is provided with the pocket groove, the back in pocket groove extends the protrusion towards first cavity direction, zero sequence transformer inlays the dress in the pocket groove, sets up the through-hole that can supply zero sequence transformer to wear to establish in the third cavity on the second base plate, and the through wires hole of intercommunication first cavity and second cavity is seted up in the pocket groove.

3. A residual current circuit breaker according to claim 1 or 2, characterized in that: the hole center of the zero sequence transformer faces to the direction perpendicular to the arrangement direction of the first cavity, the second cavity and the third cavity.

4. A residual current circuit breaker according to claim 3, characterized in that: the leakage protection module comprises a first current-carrying component used for connecting the wire holder and the arc extinguishing assembly, the first current-carrying component is formed by machining a hard metal plate, and the first current-carrying component is arranged in the second cavity and penetrates through the hole center of the zero sequence transformer.

5. A residual current circuit breaker according to claim 1, characterized in that: the leakage protection module comprises a second current-carrying component, the second current-carrying component comprises a first current-carrying portion, a second current-carrying portion, a current sampling portion and an arc striking component, the first current-carrying portion and the second current-carrying portion are respectively welded at two ends of the current sampling portion, the first current-carrying portion is used for being connected with a wire holder, the second current-carrying portion is connected with a fixed contact of a second contact assembly, the current sampling portion is composed of a manganin resistor, two wiring terminals are arranged at two ends, corresponding to the current sampling portion, of the second current-carrying component, and the arc striking component is welded with the second current-carrying portion.

6. A residual current circuit breaker according to claim 5, characterized in that: the arc striking device comprises a first substrate, a second substrate and an arc striking component, wherein a slot for the second current carrying component to be embedded and positioned is formed in one side of the first substrate, the slot is used for enabling the second current carrying component to be laterally extended towards the other side of the first substrate, two wiring terminals extend out towards the other side of the first substrate, penetrating holes for the two wiring terminals to penetrate through the other side of the first substrate respectively are formed in the inner wall of the bottom of the slot, the inner wall of one side of the slot is limited by a partition plate integrally formed on one side of the first substrate, a U-shaped notch is formed between the second current carrying component and the arc striking component in a connected mode, the partition plate is embedded in the notch, the second current carrying component and the arc striking component are arranged close to two sides of the partition plate respectively, one end of the arc striking.

7. A residual current circuit breaker according to claim 1, characterized in that: one side that first base plate corresponds the second cavity rotates and is provided with second drive component, and first base plate opposite side rotates and is provided with first drive component, first drive component is including first extension arm and second extension arm, first extension arm be arranged in with the movable iron core of the trip coil subassembly in the first cavity promote the cooperation, second drive component is including third extension arm and fourth extension arm, the third extension arm with constitute between the second extension arm through the head rod of wearing to establish in first base plate both sides and promote the cooperation, with fourth extension arm promotes the complex including the second connecting rod, the second connecting rod passes behind the second base plate and is fixed with the hasp cooperation, be provided with in the first cavity with first drive component complex resetting means.

8. A residual current circuit breaker according to claim 7, characterized in that: the utility model discloses a wireless power transmission device, including first base plate, first extension arm, second extension arm, table top, first base plate opposite side is seted up flutedly, and the position that adjoins with the recess is provided with the mesa, first drive component is including the first basal portion of tube-shape, first extension arm and second extension arm set up respectively the axial both ends position of first basal portion, first extension arm is close to the mesa sets up, the second extension arm is close to the inner wall setting at the bottom of the recess, trip coil assembly sets up in the recess, the second extension arm sets up at the bottom of trip coil assembly and recess between the inner wall.

9. A residual current circuit breaker according to claim 8, characterized in that: the inner wall is provided with curved protruding muscle at the bottom of the recess, the shape of protruding muscle and the movement track looks adaptation of second extension arm, the second extension arm is followed protruding muscle surface motion slides, the inner wall is provided with banding notch at the bottom of the recess, and the one end of notch sets up towards the second extension arm, and the other end of notch is provided with the spliced pole, resetting means is including the extension spring that sets up in the notch, the tip of second extension arm is provided with the hanging hole, the both ends of extension spring articulate with hanging hole and spliced pole respectively mutually.

10. A residual current circuit breaker according to claim 7, characterized in that: the second transmission component is including the second basal portion of disc, third extension arm and fourth extension arm distribute and set up on the outer periphery of second basal portion, third extension arm and fourth extension arm slide along the motion of first base plate side surface simultaneously, the head rod sets up the tip at the third extension arm, first base plate one side is provided with the breach, the tip of fourth extension arm is located breach department, second connecting rod tip extends to in the breach.