WO2019148621A1 - Miniature circuit breaker with novel zero-sequence transformer installation structure - Google Patents

Abstract

A miniature circuit breaker (100) with a novel zero-sequence transformer installation structure, comprising an intelligent control module (10), a first circuit breaker (20), and a second circuit breaker (30) sequentially arranged side by side. The first circuit breaker comprises a first shell (29), an electric leakage protection module (22) provided in the first shell, a first incoming line terminal (21), a first outgoing line terminal (23), and a neutral line wiring board (24). One end of the neutral line wiring board is connected to the first incoming line terminal, and the other end penetrates through the electric leakage protection module and is connected to the first outgoing line terminal. The electric leakage protection module is connected to the intelligent control module. The second circuit breaker comprises a second shell (35), a current transformer (32) provided in the second shell, a second incoming line terminal (31), a second outgoing line terminal (33), and a live line wiring board (34). One end of the live line wiring board is connected to the second incoming line terminal, and the other end sequentially penetrates through the second shell, the first shell, the electric leakage protection module, and the current transformer and is connected to the second outgoing line terminal. The current transformer is connected to the intelligent control module. The miniature circuit breaker aims to optimize the structure of the circuit breaker, reduce the cost and decrease the volume.

Description

 Miniature circuit breaker with new zero-sequence transformer mounting structure

Technical field

The invention relates to the technical field of circuit breakers, in particular to a miniature circuit breaker having a novel zero-sequence transformer mounting structure.

Background technique

The circuit breaker has an automatic reclosing function for indirect contact protection of people, and can also be used to prevent fire hazard caused by grounding fault current due to equipment insulation damage, and can be used to distribute electric energy and protect lines and power equipment from overload and Short circuit can also be used as infrequent switching of the line and infrequent starting of the motor.

The leakage protection module of the existing circuit breaker is generally located inside the intelligent control module. When the leakage protection module is used for a long time, the life of the magnetic ring in the leakage protection module is reduced, and it is difficult to replace, so that the entire circuit breaker can only be disposed of. The leakage protection module can also be separately disposed outside the circuit breaker, so that the circuit breaker has problems such as cumbersome installation, high cost, and large volume.

Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a miniature circuit breaker having a novel zero-sequence transformer mounting structure, which is intended to optimize the assembly structure of the circuit breaker, reduce assembly costs, and reduce the size of the circuit breaker.

In order to achieve the above object, the miniature circuit breaker having the novel zero-sequence transformer mounting structure proposed by the present invention comprises an intelligent control module, a first circuit breaker and a second circuit breaker which are arranged in parallel with the intelligent control module, and the first circuit breaker The device includes a first housing, a leakage protection module disposed in the first housing, a first incoming terminal, a first outgoing terminal, and a neutral wiring board, wherein the leakage protection module is disposed on the first incoming terminal and the first Between an outlet terminal, one end of the neutral patch panel is connected to the first incoming terminal, and the other end is connected to the first outgoing terminal through the leakage protection module, and the leakage protection module and the smart The second circuit breaker includes a second housing, a current transformer disposed in the second housing, a second incoming terminal, a second outgoing terminal, and a live wiring board, wherein the current transformer is disposed on the Between the second incoming terminal and the second outgoing terminal, one end of the live wire terminal is connected to the second incoming terminal, and the other end sequentially passes through the second housing, the first housing, the leakage protection module, and the current Sensor, and connected to the second line terminal, said current transformer is connected to the intelligent control module.

Further, the leakage protection module includes a zero-sequence transformer disposed in the first housing and a circuit board connected to the zero-sequence transformer, and the circuit board is configured to detect a leakage signal of the zero-sequence transformer. The neutral wire terminal block and the hot wire terminal block are both spaced through the zero sequence transformer, and the circuit board is connected to the intelligent control module.

Further, the first housing is adjacent to the leakage protection module and has a first through hole and a second through hole. The first through hole and the second through hole are spaced apart, and the live wire is sequentially worn. The first through hole, the zero sequence transformer and the second through hole.

Further, the hot wire terminal block includes a first segment, a second segment, a cold-pressed connecting wire and two cold-pressing connecting terminals, and one end of the first segment sequentially passes through the second housing and the first through-hole, and A cold-pressed connection terminal is fixedly connected to one end of the cold-pressing connection line, and one end of the second section sequentially passes through the current transformer, the second housing, the second via hole and the zero-sequence transformer, and passes through another The cold-pressed connection terminal is connected to the other end of the cold-pressed connection line.

Further, the first circuit breaker/second circuit breaker further includes a short-circuiting electromagnet disposed in the first housing/second housing, and a tripping assembly abutting the short-circuiting electromagnet, the short-circuiting electromagnet and the The neutral wire terminal block/fire wire terminal block is connected, the short circuit electromagnet is connected with a static contact, the trip component is connected with a movable contact, and the short circuit electromagnet can drive the movable contact with the trip component The stationary contact abuts or separates.

Further, the first circuit breaker/second circuit breaker further includes a pilot arc piece disposed in the first housing/second housing, and an arc extinguishing assembly connected to the arc guiding piece, the arc guiding piece and the arcing piece The neutral wire terminal block/hot wire terminal block is connected, and the arc extinguishing component is disposed at a lower end of the short circuit electromagnet.

Further, the miniature circuit breaker having a novel zero-sequence transformer mounting structure further includes a pin connecting plate, and the intelligent control module is connected to the first circuit breaker through a pin connecting plate, and the first circuit breaker passes A pin connection plate is coupled to the second circuit breaker.

Further, the intelligent control module includes a third housing, a control circuit disposed in the third housing, a motor, a worm gear coupled to the motor, and a transmission gear set, the motor being coupled to the control circuit The worm gear meshes with an input end of the transmission gear set.

Further, the transmission gear set includes a linkage gear, a first transmission gear, a second transmission gear, and a linkage turbine, and the worm gear meshes with the linkage gear for one-stage rotation, and the first transmission gear includes a coaxial rotation a first transmission gear and a second transmission gear, the linkage gear meshes with the first transmission gear, the second transmission gear meshes with the second transmission gear, and the linkage turbine meshes with the second transmission gear The first circuit breaker/second circuit breaker further includes a handle provided on the first housing/second housing, and the linkage turbine is coupled to a link shaft that is interlocked with the handle.

Further, the diameter of the first transmission gear is larger than the diameter of the second transmission gear, the diameter of the second transmission gear is larger than the diameter of the second transmission gear; and/or the second transmission gear is 1/ 4 incomplete gears; and/or, the linkage turbine is a 1/4 incomplete gear.

In the technical solution of the present invention, the miniature circuit breaker having the novel zero-sequence transformer mounting structure includes an intelligent control module, a first circuit breaker and a second circuit breaker, which are arranged in parallel, and the first circuit breaker includes a first housing and is disposed at the first The leakage protection module, the first inlet terminal, the first outlet terminal and the neutral wiring board in the housing, the leakage protection module is disposed between the first incoming terminal and the first outgoing terminal, and the leakage protection module is connected with the intelligent control module. One end of the neutral wiring board is connected to the first incoming terminal, the other end is connected to the first outgoing terminal through the leakage protection module, and the second circuit breaker includes a second housing, a current transformer disposed in the second housing, and a second input. The line terminal, the second outlet terminal and the live wire terminal block, the current transformer is arranged between the second incoming terminal and the second outgoing terminal, the current transformer is connected with the intelligent control module, and one end of the live wire terminal is connected with the second incoming terminal. The other end passes through the second housing, the first housing, the leakage protection module and the current transformer in sequence, and is connected to the second outlet terminal.

The miniature circuit breaker with the novel zero-sequence transformer mounting structure proposed by the invention has a leakage protection module disposed in the first circuit breaker and is disposed between the first incoming terminal and the first outgoing terminal, and the current transformer is set In the second circuit breaker, and disposed between the second incoming terminal and the second outgoing terminal, the first incoming terminal/second incoming terminal is connected by one end of the neutral wire/firewire terminal block, and the neutral wire is connected. The other end of the board is connected to the first outlet terminal through the leakage protection module, and the other end of the live wiring board passes through the second housing, the first housing, the leakage protection module and the current transformer in sequence, and is connected with the second outlet terminal, so that The circuit breaker and the leakage protection module are designed as an integrated structure to optimize the assembly structure of the circuit breaker, reduce the assembly cost and reduce the volume of the circuit breaker. At the same time, it is convenient for the circuit breaker to realize rapid detection of leakage and achieve the purpose of leakage protection.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.

1 is a schematic structural view of a miniature circuit breaker having a novel zero-sequence transformer mounting structure according to the present invention;

2 is a schematic exploded view of a miniature circuit breaker having a novel zero-sequence transformer mounting structure according to the present invention;

3 is a schematic structural diagram of an intelligent control module according to the present invention;

4 is a schematic structural view of a first circuit breaker according to the present invention;

Figure 5 is a schematic structural view of a second circuit breaker of the present invention;

Figure 6 is a partial structural view showing the connection of the first circuit breaker and the second circuit breaker of the present invention.

Description of the reference numerals:

Label	name	Label	name
100	Miniature circuit breaker with new zero-sequence transformer mounting structure	26	Trip component
11	Intelligent control module	261	Moving contact
12	Third housing	27	Pilot
12	Motor	28	Arc extinguishing component
13	Worm gear	29	First housing
14	Transmission gear set	30	Second circuit breaker
141	Linkage gear	31	Second incoming terminal
142	First transmission gear	32	Current Transformer
143	Second transmission gear	33	Second outlet terminal
144	Linkage turbine	34	Firewire patch panel
twenty one	First circuit breaker	341	First paragraph
twenty two	First incoming terminal	342	Second paragraph
twenty three	Leakage protection module	343	Cold pressing cable
221	Zero sequence transformer	344	Cold-pressed connection terminal
twenty three	First outlet terminal	35	Second housing
twenty four	Neutral terminal block	40	handle
25	Short circuit electromagnet	50	Pin connector
251	Static contact	60	Connecting rod shaft

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain between components in a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In the present invention, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise clearly defined and limited. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

The present invention provides a miniature circuit breaker 100 having a novel zero sequence transformer mounting structure.

Referring to FIG. 1 to FIG. 6 , in the present invention, the miniature circuit breaker 100 having the novel zero-sequence transformer mounting structure includes an intelligent control module 10 , and a first circuit breaker 20 and a plurality of the intelligent control module 10 arranged in parallel. The second circuit breaker 30 includes a first housing 29, a leakage protection module 22 disposed in the first housing 29, a first incoming terminal 21, a first outgoing terminal 23, and a neutral wiring board 24. The leakage protection module 22 is disposed between the first incoming terminal 21 and the first outgoing terminal 23. One end of the neutral terminal 24 is connected to the first incoming terminal 21, and the other end passes through the leakage protection module 22 and the first outgoing terminal 23. The connection, the leakage protection module 21 is connected to the intelligent control module 10, and the second circuit breaker 30 includes a second housing 35, a current transformer 32 disposed in the second housing 35, a second incoming terminal 31, and a second outgoing terminal 33. And the live wire terminal block 34, the current transformer 32 is disposed between the second incoming terminal 31 and the second outgoing terminal 33, one end of the live wire terminal 34 is connected to the second incoming terminal 31, and the other end passes through the second housing in sequence. 35, the first housing 29, the leakage protection module 22 and the current mutual inductance 32, and a second line connected to the terminal 33, the current transformer 32 is connected to the intelligent control module 10.

Specifically, as shown in FIG. 1 to FIG. 5, in the present invention, the miniature circuit breaker 100 having the novel zero-sequence transformer mounting structure further includes a pin connecting plate 50, and the intelligent control module 10 passes through the pin connecting plate 50 and the A circuit breaker 20 is connected, and the first circuit breaker 20 is connected to the second circuit breaker 30 via a pin connection plate 50. It can be understood that the miniature circuit breaker 100 having the novel zero-sequence transformer mounting structure further includes a plurality of pin connecting plates 50 that are respectively disposed through the first housing 29, the second housing 35, and the third. On the housing 11, the first circuit breaker 20 and the second circuit breaker 30 transmit signals of the first circuit breaker 20 and the second circuit breaker 30 to the intelligent control module 10 through the pin connection plate 50, and the intelligent control module 10 centrally controls the Short circuit, overcurrent and leakage problems of a circuit breaker 20 and a second circuit breaker 30.

It can be understood that the second circuit breaker 30 is a complete circuit breaker, and the current transformer 32 is beneficial for detecting the internal circuit current of the second circuit breaker 30 itself, preventing the second circuit breaker 30 from overcurrent or short circuit, causing fire, etc. phenomenon. In the present invention, the first circuit breaker 20 is an incomplete circuit breaker, that is, the first circuit breaker 20 is not provided with a current transformer 32.

The leakage protection module of the existing circuit breaker is generally located inside the intelligent control module. When the leakage protection module is used for a long time, the life of the magnetic ring in the leakage protection module is reduced, and it is difficult to replace, so that the entire circuit breaker can only be disposed of. The leakage protection module can also be separately disposed outside the circuit breaker, so that the circuit breaker has problems such as cumbersome installation, high cost, and large volume.

The miniature circuit breaker 100 having the novel zero-sequence transformer mounting structure of the present invention is provided in the first circuit breaker 20 by the leakage protection module 22, and is disposed between the first incoming terminal 21 and the first outgoing terminal 23, The current transformer 32 is disposed in the second circuit breaker 30, and is disposed between the second incoming terminal 31 and the second outgoing terminal 33, and is connected to the first incoming line by using one end of the neutral wiring board 24/the live wiring board 34. The terminal 21 / the second incoming terminal 32 , the other end of the neutral wire 24 is connected to the first outgoing terminal 23 through the leakage protection module 22 , and the other end of the live wire 34 passes through the second housing 35 and the first housing in sequence. 29. The leakage protection module 22 and the current transformer 32 are connected to the second outlet terminal 33, so that the circuit breaker 100 and the leakage protection module 22 are designed as a single structure, thereby optimizing the assembly structure of the circuit breaker 100, reducing assembly cost and reducing The purpose of the 100-volume of the circuit breaker, at the same time, facilitates the circuit breaker 100 to achieve rapid detection of leakage and achieve the purpose of leakage protection.

Further, as shown in FIG. 2, FIG. 4 to FIG. 6, in the present invention, the leakage protection module 22 includes a zero-sequence transformer 221 disposed in the first housing 29 and a circuit board connected to the zero-sequence transformer 221. The circuit board is used to detect the leakage signal of the zero sequence transformer 221, and the neutral wiring board 24 and the hot power wiring board 34 are both spaced through the zero sequence transformer 221, and the circuit board is connected to the intelligent control module 10.

Specifically, the zero sequence transformer 221 senses the current difference between the neutral wiring board 24 and the live wiring board 34 passing through the zero sequence transformer 221 . When a leakage condition occurs, the zero sequence transformer 221 senses the current difference between the neutral wiring board 24 and the live wiring board 34, and transmits a current difference signal to the circuit board, and the circuit board detects the transmission of the zero sequence transformer 221. After the leakage signal, the signal is transmitted to the intelligent control module 10, and after the intelligent control module 10 makes a judgment, the first circuit breaker 20 is controlled to react.

It can be understood that the circuit board can be disposed in the first circuit breaker 20 or in the intelligent control module 10, and the invention is not limited thereto. In the present invention, the zero sequence transformer 221, the circuit board, the neutral wiring board 24, the live wiring board 34, and the intelligent control module 10 together constitute a leakage protection module 22 for detecting leakage of the circuit breaker 100 and protecting the circuit breaker 100.

Further, as shown in FIG. 2 and FIG. 4, in the present invention, the first housing 29 is adjacent to the leakage protection module 22 and has a first through hole (not labeled) and a second through hole (not labeled). A wire crossing hole and a second wire hole are spaced apart, and the fire wire terminal plate 34 sequentially passes through the first wire hole hole, the zero sequence transformer 221 and the second wire hole. It can be understood that the arrangement of the first through hole and the second through hole facilitates the smooth passage of the live wire terminal 34 through the first casing 29, facilitating the assembly of the circuit breaker 100. The firewire terminal block 34 may be a flexible circuit or a hard copper column. To facilitate the splicing and installation of the first circuit breaker 20 and the second circuit breaker 30, the live wire terminal block 34 is a combination of a flexible circuit and a copper column.

Further, as shown in FIG. 2, FIG. 4 to FIG. 6, in the present invention, the live wire terminal block 34 includes a first segment 341, a second segment 342, a cold-pressed connection wire 343, and two cold-pressed connection terminals 344, first. One end of the segment 341 passes through the second housing 35 and the first through hole in sequence, and is fixedly connected to one end of the cold press connection line 343 through a cold press connection terminal 344, and one end of the second segment 342 passes through the current transformer in sequence. 32. The second housing 35, the second wiring hole and the zero-sequence transformer 221 are connected to the other end of the cold-pressing connection line 343 through another cold-pressing connection terminal 344.

Specifically, one end of the first segment 341 of the live wire terminal block 34 is connected to the second incoming terminal 31, and the other end is disposed in the first circuit breaker 20 by the second circuit breaker 30 and is disposed adjacent to the zero sequence transformer 221. In order to facilitate the splicing and mounting of the first circuit breaker 20 and the second circuit breaker 30, one end of the first segment 341 and the second incoming terminal 31 is connected by a soft circuit, and the first segment 341 passes through the second casing 35 and the A portion of the wire hole is made of a copper column. One end of the second segment 342 of the live wire terminal block 34 is connected to the second outlet terminal 33, and the other end is inserted through the second circuit breaker 30 in the first circuit breaker 20 and passes through the zero sequence transformer 221. One end of the segment 342 connected to the second outlet terminal 33 is a soft line, and the portion of the second segment 342 passing through the current transformer 32, the second housing 35, the second via hole and the zero sequence transformer 221 is a copper post.

It can be understood that the cold-pressed connection terminal 344 is a sleeve structure, and the cold-pressed connection line 343 can be a flexible circuit or a hard copper column. The two ends of the cold-pressed connection line 343 are respectively connected by the two cold-pressed connection terminals 344. Connecting with the first segment 341 and the second segment 342, the live wire terminal block 34 forms a complete loop from the second incoming terminal 31 to the second outgoing terminal 33, and the live wire terminal 34 passes through the zero sequence transformer 221 for facilitating The zero sequence transformer 221 detects the current difference between the neutral wiring board 24 and the live wiring board 34, which is advantageous for the circuit breaker 100 to quickly detect leakage current and achieve leakage protection.

Further, the first circuit breaker 20 / the second circuit breaker 30 further includes a short-circuiting electromagnet 25 disposed in the second casing 35 of the first casing 29/, and a tripping assembly 26 abutting against the short-circuiting electromagnet 25, short-circuited The electromagnet 25 is connected to the neutral wire terminal plate 24/the fire wire terminal block 34, the short circuit electromagnet 25 is connected with the static contact 251, the trip assembly 26 is connected with the movable contact 261, and the short circuit electromagnet 25 can be driven by the trip assembly 26. The contact 261 abuts or separates from the stationary contact 251.

Specifically, the first circuit breaker 20 and the second circuit breaker 30 each have a housing that facilitates protection of components within the first circuit breaker 20 and the second circuit breaker 30. The first housing 29/ of the first circuit breaker 20 / the second circuit breaker 30 is provided with a short circuit electromagnet 25 and a trip assembly 26 in the second housing 35 , and the first circuit breaker 20 / the second circuit breaker 30 The short-circuit electromagnet 25 is connected to the first incoming terminal 21 / the second incoming terminal 31 , the first outgoing terminal 23 / the second outgoing terminal 33 via the neutral wire terminal 24 / the live wire terminal 34. In the first circuit breaker 20, the neutral wiring board 24 sequentially turns on the first incoming terminal 21 and the shorting electromagnet 25, and then connects through the zero sequence transformer 221 to the first outgoing terminal 23 to form a complete loop. In the second circuit breaker 30, the live wire terminal block 34 sequentially turns on the second incoming terminal 31 and the shorting electromagnet 25, and sequentially passes through the zero sequence transformer 221, and the current transformer 32 is connected to the first outgoing terminal 23. To form a complete loop.

In the present invention, the short-circuiting electromagnet 25 is connected with the static contact 251, the tripping assembly 26 is connected with the movable contact 261, one end of the short-circuiting electromagnet 25 abuts the tripping assembly 26, and the short-circuiting electromagnet 25 and the intelligent control module 10 electrical connections. The first circuit breaker 20 is taken as an example. When the zero-sequence transformer 221 detects the leakage phenomenon, the signal is sequentially transmitted to the intelligent control module 10 via the circuit board. After the intelligent control module 10 makes a judgment, the short-circuit electromagnet 25 is controlled to push the trip component 26 . Movement, at this time, the trip assembly 26 includes a rotating lever and a trip, the movable contact 261 is connected to the trip, one end of the short-circuiting electromagnet 25 abuts the rotating lever, and the intelligent control module 10 controls the short-circuit electromagnet 25 to push the rotating lever to rotate. In order to rotate the trip, the movable contact 261 is separated from the fixed contact 251, so that the first circuit breaker 20 is disconnected to achieve the purpose of protecting the circuit. When the circuit breaker 100 is operating normally, that is, when no leakage occurs, the movable contact 261 abuts against the stationary contact 251. It can be understood that the short-circuit electromagnet 25 can drive the movable contact 261 to abut or separate from the static contact 251 through the trip assembly 26 . In the present invention, the structure of the trip unit 26 may be the structure of the trip unit in the prior art circuit breaker, and will not be described in detail herein.

Further, as shown in FIG. 2, FIG. 4 to FIG. 6, in the present invention, the first circuit breaker 20 / the second circuit breaker 30 further includes a pilot arc piece 27 disposed in the second casing 35 of the first casing 29/. The arc extinguishing assembly 28 connected to the arcing blade 27 is connected to the neutral wire terminal plate 24/the fire wire terminal block 34, and the arc extinguishing assembly 28 is disposed at the lower end of the short circuit electromagnet 25.

Specifically, the arc runners 27 and the arc extinguishing assembly 28 are disposed in the casings of the first circuit breaker 20 and the second circuit breaker 30, and the arc runners 27 are used to generate current through the static contacts 251 and the movable contacts 261. The arc is directed to the arc extinguishing assembly 28 for dispersing and arcing the arc drawn by the arc runner 27 to protect the safe use of the first circuit breaker 20 and the second circuit breaker 30. The arcing blade 27 is connected to the neutral wire terminal block 24/hot wire terminal block 34 to effect arc starting. It can be understood that, in order to make the structure of the first circuit breaker 20 and the second circuit breaker 30 more compact, the arc extinguishing assembly 28 is provided at the lower end of the short circuit electromagnet 25.

Further, as shown in FIG. 2 and FIG. 3, in the present invention, the intelligent control module 10 includes a third housing 11, a control circuit disposed in the third housing 11, a motor 12, a worm gear 13 connected to the motor 12, and The transmission gear set 14, the motor 12 is coupled to a control circuit, and the worm gear 13 is engaged with the input end of the transmission gear set 14.

In particular, the third housing 11 facilitates protection of components within the intelligent control module 10. The intelligent control module 10 is configured to control overcurrent, short circuit, and leakage phenomena occurring in the first circuit breaker 20 and the second circuit breaker 30, and make judgments and processes. It can be understood that the control circuit is used for integrally controlling the circuit breaker 100, and the motor 12, the worm gear 13 and the transmission gear set 14 cooperate with the automatic opening and closing device constituting the circuit breaker 100. The motor 12 is coupled to a control circuit that meshes with an input end of the transmission gear set 14.

More specifically, as shown in FIG. 2 and FIG. 3, the transmission gear set 14 includes a linkage gear 141, a first transmission gear 142, a second transmission gear 143, and a linkage turbine 144. The worm gear 13 and the linkage gear 141 are first-in-one meshed and rotated. The transmission gear 142 includes a first transmission gear and a second transmission gear that rotate coaxially. The linkage gear 141 meshes with the first transmission gear, the second transmission gear 143 meshes with the second transmission gear, and the linkage turbine 144 meshes with the second transmission gear 143. The first circuit breaker 20 / the second circuit breaker 30 further includes a handle 40 disposed on the second casing 35 of the first casing 29/, and the linkage turbine 144 is coupled to the link shaft 60 that is coupled to the handle 40.

It can be understood that the worm gear 13 is driven by the motor 12, and the worm gear 13 is meshed with the interlocking gear 141 to change the driving direction, and finally the rotation direction of the connecting rod shaft 60 is changed by the transmission gear set 14, thereby making the handle of the circuit breaker 100 40 realize manual opening and closing operation or automatic opening and closing operation. When the second transmission gear 143 of the transmission gear set 14 is engaged with the linkage turbine 144, the control circuit controls the rotation of the motor 12 to cause the circuit breaker 100 to have the handle 40 to perform an automatic opening and closing operation; when the second transmission gear 143 of the transmission gear set 14 When separated from the linkage turbine 144, the transmission gear set 14 cannot drive the linkage shaft 60 to rotate the handle 40. At this time, the handle 40 is combined with the trip assembly 26 to implement a manual opening and closing operation. The worm gear 13 and the transmission gear set 14 are driven by the motor 12, and combined with the second transmission gear 143 to mesh or disengage with the linkage turbine 144, which improves the short circuit compared to the original single handle 40 and the drive mechanism is placed outside the housing. The standard of the device reduces the difficulty of installation and improves the stability of operation.

Further, the diameter of the first transmission gear is larger than the diameter of the second transmission gear, and the diameter of the second transmission gear 143 is larger than the diameter of the second transmission gear. The different diameters and diameters can better match the installation conditions of the transmission gear set 14, and ensure the stable operation of the transmission gear set 14.

Further, the second transmission gear 143 is a 1/4 incomplete gear, and the gear surface of the second transmission gear 143 is divided into two parts, a part of which has a gear on the circumference of the entire second transmission gear 143, and a part of the tooth profile is There are 1/4 circumferences with gears and 3/4 for curved structures. The interlocking turbine 144 is a 1/4 incomplete gear defined as a gear having a quarter of a circumference and a gear having a curved shape in the tooth profile of the interlocking turbine 144. The meshing or disengagement between the second transmission gear 143 of the transmission gear set 14 and the interlocking turbine 144 is achieved by the meshing of the incomplete gear of the second transmission gear 143 and the incomplete gear of the linkage turbine 144, in order to have a novel zero sequence The miniature circuit breaker 100 of the transformer mounting structure provides easy and easy technical support.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformation, or direct/indirect use, of the present invention and the contents of the drawings are used in the inventive concept of the present invention. It is included in the scope of the patent protection of the present invention in other related technical fields.

Claims (20)

1. A miniature circuit breaker having a novel zero-sequence transformer mounting structure, comprising: an intelligent control module; a first circuit breaker and a second circuit breaker arranged in parallel with the intelligent control module, wherein the first circuit breaker includes a housing, a leakage protection module disposed in the first housing, a first incoming terminal, a first outgoing terminal, and a neutral wiring board, wherein the leakage protection module is disposed on the first incoming terminal and the first outgoing terminal One end of the neutral wire terminal is connected to the first incoming terminal, and the other end is connected to the first outgoing terminal through the leakage protection module, and the leakage protection module is connected to the intelligent control module. The second circuit breaker includes a second housing, a current transformer disposed in the second housing, a second incoming terminal, a second outgoing terminal, and a live wiring board, and the current transformer is disposed in the second input Between the line terminal and the second outlet terminal, one end of the live wire terminal is connected to the second incoming terminal, and the other end passes through the second housing, the first housing, the leakage protection module and the current transformer in sequence, and Connected to the second outlet terminal, the current transformer is connected to the intelligent control module.
2. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 1, wherein the leakage protection module comprises a zero-sequence transformer disposed in the first housing and connected to the zero-sequence transformer a circuit board for detecting a leakage signal of the zero-sequence transformer, wherein the neutral wiring board and the hot power wiring board are spaced apart through the zero-sequence transformer, the circuit board and The intelligent control module is connected.
3. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 2, wherein the first housing is provided with a first through hole and a second through hole adjacent to the leakage protection module. The first wire hole and the second wire hole are spaced apart, and the fire wire terminal plate sequentially passes through the first wire hole, the zero sequence transformer and the second wire hole.
4. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 3, wherein the live wire terminal block comprises a first segment, a second segment, a cold-pressed connecting wire and two cold-pressed connecting terminals. One end of the first segment passes through the second housing and the first through hole in sequence, and is fixedly connected to one end of the cold-pressed connecting wire through a cold-pressing connecting terminal, and one end of the second segment sequentially passes through the current transformer And a second housing, a second via hole and a zero-sequence transformer, and connected to the other end of the cold-pressed connection line through another cold-pressed connection terminal.
5. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 4, wherein said first circuit breaker/second circuit breaker further comprises a short circuit provided in said first housing/second housing An electromagnet, a tripping assembly abutting the short-circuiting electromagnet, the short-circuiting electromagnet is connected to the neutral wire/firewire terminal block, the short-circuiting electromagnet is connected with a static contact, and the tripping component is connected The movable contact, the short-circuiting electromagnet can drive the movable contact to abut or separate from the static contact through the trip component.
6. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 5, wherein said first circuit breaker/second circuit breaker further comprises an introduction provided in said first housing/second housing And an arc extinguishing component connected to the arcing blade, the arcing blade is connected to the neutral wire/firewire terminal block, and the arc extinguishing component is disposed at a lower end of the short circuit electromagnet.
7. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 1, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
8. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 2, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
9. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 3, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
10. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 4, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
11. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 5, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
12. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 6, wherein said miniature circuit breaker having a novel zero-sequence transformer mounting structure further comprises a pin connection plate, said intelligent control module The first circuit breaker is connected to the first circuit breaker through a pin connection plate, and the first circuit breaker is connected to the second circuit breaker through a pin connection plate.
13. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 7, wherein the intelligent control module comprises a third housing, a control circuit disposed in the third housing, a motor, and the a motor-connected worm gear and a transmission gear set, the motor being coupled to the control circuit, the worm gear meshing with an input end of the transmission gear set.
14. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 10, wherein said intelligent control module comprises a third housing, a control circuit provided in the third housing, a motor, and said a motor-connected worm gear and a transmission gear set, the motor being coupled to the control circuit, the worm gear meshing with an input end of the transmission gear set.
15. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 11, wherein the intelligent control module comprises a third housing, a control circuit disposed in the third housing, a motor, and the a motor-connected worm gear and a transmission gear set, the motor being coupled to the control circuit, the worm gear meshing with an input end of the transmission gear set.
16. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 12, wherein said intelligent control module comprises a third housing, a control circuit provided in the third housing, a motor, and said a motor-connected worm gear and a transmission gear set, the motor being coupled to the control circuit, the worm gear meshing with an input end of the transmission gear set.
17. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 13, wherein said transmission gear set comprises a linkage gear, a first transmission gear, a second transmission gear, and a linkage turbine, said worm gear Rotating with the interlocking gear in a first stage, the first transmission gear includes a first transmission gear and a second transmission gear that rotate coaxially, the linkage gear meshes with the first transmission gear, and the second transmission gear and the second transmission gear a second transmission gear meshing, the linkage turbine meshing with the second transmission gear, the first circuit breaker/second circuit breaker further comprising a handle disposed on the first housing/second housing, the linkage The turbine is coupled to a link shaft that is coupled to the handle.
18. The miniature circuit breaker with a novel zero-sequence transformer mounting structure according to claim 16, wherein the intelligent control module comprises a third housing, a control circuit disposed in the third housing, a motor, and the a motor-connected worm gear and a transmission gear set, the motor being coupled to the control circuit, the worm gear meshing with an input end of the transmission gear set.
19. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 17, wherein a diameter of the first transmission gear is larger than a diameter of the second transmission gear, and a diameter of the second transmission gear is larger than The diameter of the second transmission gear; and/or the second transmission gear is a 1/4 incomplete gear; and/or the linkage turbine is a 1/4 incomplete gear.
20. A miniature circuit breaker having a novel zero-sequence transformer mounting structure according to claim 18, wherein a diameter of the first transmission gear is larger than a diameter of the second transmission gear, and a diameter of the second transmission gear is larger than The diameter of the second transmission gear; and/or the second transmission gear is a 1/4 incomplete gear; and/or the linkage turbine is a 1/4 incomplete gear.