Circuit breaker

Abstract

A circuit breaker comprises a shell and at least two phase pole units arranged side by side in the shell, the shell comprises two first side plates arranged oppositely, two second side plates arranged oppositely, and a bottom plate and a top plate arranged oppositely, and each phase pole unit comprises two wiring structures. The two wiring structures are respectively a first wiring structure and a second wiring structure, the first wiring structure of one phase pole unit in two adjacent phase pole units extends out of one second side plate, and the first wiring structure of the other phase pole unit extends out of the other second side plate or extends out of the first side plate; in two adjacent phase pole units, the second wiring structure of one phase pole unit extends out of one second side plate, and the second wiring structure of the other phase pole unit extends out of the other second side plate or extends out of the first side plate, so that the distance between the wiring structures of the adjacent phase pole units can be increased, and an insulation breakdown fault is avoided.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background Art

[0002] With the continuous development of the electric energy system, the voltage requirements for circuit breakers are getting higher and higher. Because the distance between the two adjacent terminals and the distance between the two adjacent exhaust ports of traditional circuit breakers are close and facing the same direction, as the circuit breaker voltage increases, insulation breakdown failures are likely to occur between the two adjacent terminals of the circuit breaker. In particular, the arcing between the two adjacent exhaust ports is more likely to cause an arc short circuit between the poles due to the arcing generated by the interrupted current, posing a huge hidden danger to the safety of people and electrical equipment.

[0003] Although an arc extinguishing hood or a long partition can be added to the outside of the circuit breaker, it will increase the space occupied by the circuit breaker in the length direction and make wiring more difficult, thus limiting the use of the circuit breaker. Utility Model Content

[0004] The purpose of the present utility model is to overcome at least one defect of the prior art and provide a circuit breaker.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A circuit breaker includes a housing, an operating mechanism disposed in the housing, and at least two phase pole units disposed side by side. The housing includes two first side plates disposed opposite each other, two second side plates disposed opposite each other, and a bottom plate and a top plate disposed opposite each other. At least one partition plate is disposed between the two second side plates to separate the phase pole units. The first side plate is perpendicular to a first direction, the second side plate and the partition plate are perpendicular to a second direction, and the bottom plate and the top plate are perpendicular to a third direction. The first direction, the second direction, and the third direction are mutually perpendicular. Each phase pole unit includes two wiring structures, and the two wiring structures of each phase pole unit serve as an inlet terminal and an outlet terminal of the phase pole unit, respectively.

[0007] The two wiring structures are respectively a first wiring structure and a second wiring structure, the first wiring structure of one phase pole unit of two adjacent phase pole units extends from one second side panel, and the first wiring structure of the other phase pole unit extends from the other second side panel or from the first side panel; the second wiring structure of one phase pole unit of two adjacent phase pole units extends from one second side panel, and the second wiring structure of the other phase pole unit extends from the other second side panel or from the first side panel.

[0008] Preferably, the shell is provided with an exhaust port corresponding to the phase pole unit, the exhaust port of one of the two adjacent phase pole units is arranged on the second side plate, and the exhaust port of the other phase pole unit is arranged on the other second side plate or on the first side plate.

[0009] Preferably, it includes two phase pole units, the first wiring structure and the second wiring structure of one phase pole unit both extend from the same second side plate, and the exhaust port connected to the arc extinguishing mechanism of the one phase pole unit is also arranged on the one second side plate, and the first wiring structure and the second wiring structure of the other phase pole unit both extend from the other second side plate, and the exhaust port connected to the arc extinguishing mechanism of the other phase pole unit is also arranged on the other second side plate.

[0010] Preferably, it includes two phase pole units, wherein the first wiring structure and the second wiring structure of one phase pole unit both extend from the second side plate, and the first wiring structure and the second wiring structure of the other phase pole unit respectively extend from the two first side plates, or respectively extend from the first side plate and the other second side plate.

[0011] Preferably, it includes two phase pole units, wherein the first wiring structure of one phase pole unit and the second wiring structure of the other phase pole unit extend from the second side plate and the first side plate respectively, and the second wiring structure of one phase pole unit and the first wiring structure of the other phase pole unit extend from the other first side plate and the other second side plate respectively, so that at least two first wiring structures and at least two second wiring structures are respectively arranged on four different sides.

[0012] Preferably, it includes three phase pole units, which are the first phase pole unit, the second phase pole unit and the third phase pole unit. The third phase pole unit is arranged between the first phase pole unit and the second phase pole unit. The first wiring structure and the second wiring structure of the third phase pole unit extend from the two first side panels respectively, the first wiring structure and the second wiring structure of the first phase pole unit both extend from the second side panel, and the first wiring structure and the second wiring structure of the second phase pole unit both extend from the other second side panel.

[0013] Preferably, the first wiring structure includes a first connecting part and a first wiring part connected to the first connecting part, the second wiring structure includes a second connecting part and a second wiring part connected to the second connecting part, the first connecting part is used to connect the static contact, the second connecting part is used to be electrically connected to the moving contact, and the first wiring part and the second wiring part extend outside the shell respectively for connecting external wires.

[0014] Preferably, the first wiring part, the first connecting part, the static contact, the moving contact, the second connecting part and the second wiring part are used to form the main circuit of the phase pole unit, the main circuits of at least two phase pole units are U-shaped, and the main circuits of the two phase pole units do not cross.

[0015] Preferably, the first connecting part is arranged parallel to the side of the first wiring part, a first supporting part is provided between the first connecting part and the first wiring part, the first supporting part is connected between the first connecting part and the first wiring part, a static contact is provided on the first connecting part, and a wiring hole that cooperates with the wiring terminal is provided on the first wiring part.

[0016] Preferably, the first connecting portion is rotatably connected to the first wiring portion.

[0017] Preferably, the first connecting portion is provided with an elastic clamping portion, a first rotating shaft is provided in the elastic clamping portion, the first wiring portion extends into the elastic clamping portion, rotates around the first rotating shaft and is clamped and fixed by the elastic clamping portion.

[0018] Preferably, the first wiring part is provided with a wiring hole that cooperates with the wiring terminal, the second connecting part includes a lower half connecting part, and an upper half connecting part connected between the lower half connecting part and the second wiring part, the lower half connecting part is connected to the moving contact through a soft conductor, and the upper half connecting part is provided with a tripping protection mechanism.

[0019] Preferably, the tripping protection mechanism includes a U-shaped yoke, the armature is rotatably connected to the two opposite sides of the yoke, the upper connecting part and the bimetallic strip are respectively arranged between the yoke and the armature, and the yoke and the bimetallic strip are respectively fixedly connected to the upper connecting part.

[0020] Preferably, each phase pole unit includes a tripping protection mechanism, a contact system and an arc extinguishing mechanism arranged between the second side plate and the partition or between two adjacent partitions, and the contact system includes a moving contact and a static contact, and the moving contact and the static contact are respectively electrically connected to the two wiring structures.

[0021] Preferably, the upper connecting portion and the second connecting portion are rotatably connected, and the second connecting portion can rotate relative to the upper connecting portion.

[0022] Preferably, it includes three phase pole units, which are the first phase pole unit, the second phase pole unit and the third phase pole unit. The third phase pole unit is arranged between the first phase pole unit and the second phase pole unit. The exhaust port of the third phase pole unit is arranged on the first side panel. The exhaust ports of the first phase pole unit and the second phase pole unit are respectively arranged on the two second side panels. The exhaust ports of the first phase pole unit and the second phase pole unit are respectively arranged perpendicular to the exhaust port of the third phase pole unit.

[0023] The first wiring structures of two adjacent phase pole units of the present invention extend from different side walls respectively, and the second wiring structures of two adjacent phase pole units extend from different side walls respectively, which can increase the distance between the first wiring structures of at least two adjacent phase pole units and the distance between the second wiring structures of adjacent phase pole units. There is no need to set an arc extinguishing cover or a long partition on the outside of the circuit breaker, and insulation breakdown failures can be avoided.

[0024] In addition, by arranging the exhaust port, the first connection part and the second connection part of one phase pole unit on the same side of the phase pole unit, and the exhaust port, the first connection part and the second connection part of another phase pole unit on the other side of the phase pole unit, not only can the wiring operation be facilitated, but also the distance between the first connection parts of the two phase pole units and the distance between the second connection parts can be increased, thereby avoiding insulation breakdown failures between the phase pole units and avoiding the exhaust ports being too close, which causes arc short circuit between poles due to arcing.

[0025] Furthermore, the first connecting portion is rotatably connected to the first wiring portion. The first wiring portion is rotatable relative to the first connecting portion, allowing the first wiring structure to change its wiring direction and extend from either of the two second side plates for use with either of the two phase pole units. The upper connecting portion is rotatably connected to the second wiring portion. The second wiring portion is rotatable relative to the upper connecting portion, allowing the second wiring structure to change its wiring direction and extend from either of the two second side plates for use with either of the two phase pole units. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1-2 They are respectively the structural schematic diagrams of the left and right sides of the circuit breaker of the utility model;

[0027] Figure 3 This is the first embodiment of the circuit breaker of the utility model;

[0028] Figure 4 This is the second embodiment of the circuit breaker of the utility model;

[0029] Figure 5 This is the third embodiment of the circuit breaker of the utility model;

[0030] Figure 6 This is the fourth embodiment of the circuit breaker of the utility model;

[0031] Figure 7 This is the fifth embodiment of the circuit breaker of the utility model;

[0032] Figure 8-9 It is a structural diagram of the first wiring structure of the utility model;

[0033] Figure 10-11 It is a structural diagram of the second wiring structure of the utility model;

[0034] In the picture:

[0035] 1 Housing

[0036] 2 Operating mechanism

[0037] 3-phase pole unit

[0038] 4. First wiring structure

[0039] 5 Second wiring structure

[0040] 6 Exhaust port

[0041] 11 First side panel

[0042] 12 Second side panel

[0043] 13 partition

[0044] 31 Tripping protection mechanism

[0045] 32 contact system

[0046] 33 Arc extinguishing mechanism

[0047] 35 static contact

[0048] 41 First connection

[0049] 42 First connection part

[0050] 43 First support part

[0051] 51 Second connection

[0052] 52 Second connection part

[0053] 53 lower connection

[0054] 54 Upper connection

[0055] 301 first phase pole unit

[0056] 302 Second phase pole unit

[0057] 303 Third phase pole unit

[0058] 311 bimetallic strip

[0059] 312 Armature

[0060] 313 yoke DETAILED DESCRIPTION

[0061] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the description of the following embodiments.

[0062] like Figure 1-2 As shown, the circuit breaker of this embodiment includes a housing 1, an operating mechanism 2 arranged in the housing 1, and at least two phase pole units 3 arranged side by side. The phase pole unit 3 includes two wiring structures, and the two wiring structures of each phase pole unit serve as the input terminal and the output terminal of the phase pole unit respectively, as well as a tripping protection mechanism 31, a contact system 32 and an arc extinguishing mechanism 33 respectively arranged along the first direction. The contact system 32 includes a moving contact and a static contact 35, and the moving contact and the static contact 35 are respectively connected to the line through the two wiring structures. The operating mechanism 2 is provided with a handle (not shown in the figure). The handle drives the moving contact through the operating mechanism 2 to move, so that the moving contact contacts and the static contact 35 contact and separate, thereby conducting and disconnecting the line connected to the moving contact and the static contact 35, and realizing opening and closing. The arc extinguishing mechanism 33 is used to extinguish the arc generated by the moving contact and the static contact 35. The arc extinguishing mechanism 33 is provided with a plurality of grids, and the arc is cut into a plurality of small segments by the plurality of grids before being extinguished.

[0063] The operating mechanism 2 includes a connecting rod mechanism and an energy storage spring. The handle drives the moving contact to move through the connecting rod mechanism. The connecting rod mechanism includes a lock buckle and a trip buckle that fit together. When the moving contact contacts the static contact 35, the connecting rod mechanism locks the energy storage spring in the energy storage state. When a fault current occurs in the line, the tripping protection mechanism 31 triggers the connecting rod structure to unlock the energy storage spring, that is, triggers the lock buckle and the trip buckle to release the snap-fit relationship, so that the energy storage spring releases energy and drives the moving contact to separate from the static contact 35, thereby protecting the line.

[0064] like Figure 1-3 As shown, the housing 1 includes two first side plates 11 arranged opposite to each other, two second side plates 12 arranged opposite to each other, and a bottom plate and a top plate arranged opposite to each other. At least one partition 13 is provided between the two second side plates 12 to separate the phase pole unit 3. The first side plate 11 is perpendicular to the first direction, the second side plate 12 and the partition 13 are perpendicular to the second direction, the bottom plate and the top plate are perpendicular to the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the tripping protection mechanism 31, the contact system 32 and the arc extinguishing mechanism 33 of the phase pole unit 3 are arranged along the first direction between the second side plate 12 and the partition 13 or between two adjacent partitions 13, and the moving contact and the static contact 35 are electrically connected to the two wiring structures respectively. Figure 3 For example, Figure 3The vertical direction is the first direction, and the two phase pole units 3 are arranged side by side along a second direction perpendicular to the first direction, namely the left-right direction. The tripping protection mechanism 31, contact system 32, and arc extinguishing mechanism 33 in each phase pole unit 3 are arranged along the first direction. The two wiring structures of the phase pole unit 3 are respectively a first wiring structure 4 and a second wiring structure 5, which serve as the input and output terminals of the phase pole unit 3, respectively. In the prior art, the first wiring structures 4 of two adjacent phase pole units 3 both extend from one first side plate 11 along the first direction, and the second wiring structures 5 of two adjacent phase pole units 3 both extend from the other first side plate 11 along the first direction. As the voltage of the circuit breaker increases, insulation breakdown failure is prone to occur between the two adjacent terminals of the circuit breaker. The prior art may also have the first wiring structures 4 of two adjacent phase pole units 3 both extend from one second side plate 12 along the second direction, and the second wiring structures 5 of two adjacent phase pole units 3 both extend from the other second side plate 12 along the second direction, which also has similar problems.

[0065] An improvement of this embodiment is that the first wiring structures 4 of two adjacent phase pole units 3 extend from different side walls, and the second wiring structures 5 of two adjacent phase pole units 3 extend from different side walls. That is, the first wiring structure 4 of one of the two adjacent phase pole units 3 extends from one second side plate 12, while the first wiring structure 4 of the other phase pole unit 3 extends from the other second side plate 12 or from one first side plate 11; and the second wiring structure 5 of one of the two adjacent phase pole units 3 extends from one second side plate 12, while the second wiring structure 5 of the other phase pole unit 3 extends from the other second side plate 12 or from one first side plate 11.

[0066] In this embodiment, the first wiring structures 4 of two adjacent phase pole units 3 extend from different side walls, and the second wiring structures 5 of two adjacent phase pole units 3 extend from different side walls, respectively. This can increase the distance between the first wiring structures 4 of at least two adjacent phase pole units 3, as well as the distance between the second wiring structures 5 of adjacent phase pole units 3. There is no need to set an arc extinguishing cover or a long partition on the outside of the circuit breaker, and insulation breakdown failures can be avoided.

[0067] Specifically, the first wiring structure 4 includes a first connecting part 41 and a first wiring part 42 connected to the first connecting part 41, and the second wiring structure 5 includes a second connecting part 51 and a second wiring part 52 connected to the second connecting part 51. The first connecting part 41 is used to connect the static contact 35, and the second connecting part 51 is used to electrically connect to the moving contact. The first wiring part 42 and the second wiring part 52 respectively extend outside the shell for connecting external wires. The first wiring part 42 and the second wiring part 52 are respectively provided with wiring terminals for fixing the external wires to the wiring parts. The first wiring part 42 of at least one phase pole unit 3 extends from the second side plate 12, so that the first wiring parts 42 of at least two phase pole units 3 extend from two different sides of the shell 1 to the outside of the shell 1, and the second wiring part 52 of at least one phase pole unit 3 extends from the second side plate 12, so that the second wiring parts 52 of at least two phase pole units 3 extend from two different sides of the shell 1 to the outside of the shell 1.

[0068] In the circuit breaker of this embodiment, the first wiring portion 42 of at least one phase pole unit 3 extends from the second side plate 12, so that the first wiring portions 42 of at least two phase pole units 3 extend from two different sides of the shell 1 to the outside of the shell 1 respectively, and the second wiring portion 52 of at least one phase pole unit 3 extends from the second side plate 12, so that the second wiring portions 52 of at least two phase pole units 3 extend from two different sides of the shell 1 to the outside of the shell 1 respectively, which can increase the distance between the first wiring structures 4 of at least two phase pole units 3 and the distance between the second wiring structures 5, thereby avoiding insulation breakdown failure.

[0069] like Figure 1-3The first embodiment shown in the figure is provided with two phase pole units 3, the two phase pole units 3 are respectively a first phase pole unit 301 and a second phase pole unit 302, the first connection portion 42 and the second connection portion 52 of the two phase pole units 3 are both extended from the second side plate 12, that is, the first connection portion 42 and the second connection portion 52 of one phase pole unit 3 are arranged on one second side plate 12, and the exhaust port 6 connected to the arc extinguishing mechanism 33 of the one phase pole unit 3 is also arranged on the same second side plate 12, and the first connection portion 42 and the second connection portion 52 of the other phase pole unit 3 are arranged on the other second side plate 12 and connected to the other phase pole unit 3. The exhaust port 6 connected to the arc extinguishing mechanism 33 is also arranged on the other second side plate 12. By arranging the exhaust port 6, the first wiring part 42 and the second wiring part 52 of one phase pole unit 3 on the same side of the phase pole unit 3, and the exhaust port 6, the first wiring part 42 and the second wiring part 52 of the other phase pole unit 3 on the other side of the phase pole unit 3, not only can the wiring operation be facilitated, but also the distance between the first wiring parts 42 of the two phase pole units 3 and the distance between the second wiring parts 52 can be increased, thereby avoiding insulation breakdown failure between the phase pole units 3 and avoiding the exhaust ports 6 being too close, which causes arc short circuit between the poles due to arcing.

[0070] Furthermore, the first wiring portion 42, the first connecting portion 41, the static contact 35, the moving contact, the second connecting portion 51 and the second wiring portion 52 are used to form the main circuit of the phase pole unit 3. The main circuits of at least two phase pole units 3 are U-shaped, and the main circuits of the two phase pole units 3 do not cross each other. The openings of the main circuits of the two phase pole units 3 are facing away from each other. Since the main circuits of the two phase pole units 3 are not cross-arranged, short circuits between the phase pole units 3 can be avoided, thereby improving reliability.

[0071] like Figure 4 In the second embodiment shown, three or four phase pole units 3 are provided, and one or two third phase pole units 303 are provided between the first phase pole unit 301 and the second phase pole unit 302. The first phase pole unit 301, the second phase pole unit 302 and the third phase pole unit 303 have the same internal structure. The first connection portion 42 and the second connection portion 52 of the third phase pole unit 303 extend from the two first side panels 11 respectively, the first connection portion 42 and the second connection portion 52 of the first phase pole unit 301 both extend from the second side panel 12, and the first connection portion 42 and the second connection portion 52 of the second phase pole unit 302 both extend from the other second side panel.

[0072] like Figure 5In the third embodiment shown, the first connection portion 42 and the second connection portion 52 of one phase pole unit 3 may both extend from the second side plate 12, wherein the first connection portion 42 and the second connection portion 52 of the other phase pole unit 3 respectively extend from the two first side plates 11, or respectively extend from the first side plate 11 and the other second side plate 12.

[0073] like Figure 6-7 In the fourth and fifth embodiments shown, the first wiring portion 42 of one phase pole unit 3 and the second wiring portion 52 of the other phase pole unit 3 extend from the second side plate 12 and the first side plate 11, respectively, and the second wiring portion 52 of one phase pole unit 3 and the first wiring portion 42 of the other phase pole unit 3 extend from the other first side plate 11 and the other second side plate 12, respectively, so that at least two first wiring portions 42 and at least two second wiring portions 52 are respectively arranged on four different side surfaces.

[0074] like Figure 8-9 As shown, the first connecting portion 41 is arranged parallel to the side of the first wiring portion 42, and a first supporting portion 43 is provided between the first connecting portion 41 and the first wiring portion 42. The first supporting portion 43 is connected between the first connecting portion 41 and the first wiring portion 42. The first connecting portion 41 is provided with a static contact 35, and the first wiring portion 42 is provided with a wiring hole that mates with a wiring terminal. The wiring terminal is provided with a wiring screw that passes through the wiring hole. The wiring screw is used to directly or indirectly secure an external wire to the first wiring portion 42. In this embodiment, the first connecting portion 41, the first wiring portion 42, and the first supporting portion 43 are integrally formed.

[0075] Preferably, as another embodiment, the first connecting portion 41 is rotatably connected to the first wiring portion 42. The first wiring portion 42 can rotate relative to the first connecting portion 41, allowing the first wiring structure 4 to change its wiring direction and extend from either of the two second side plates 12 for use with either of the two phase pole units 3. In one implementation, the first connecting portion 41 is provided with a first hole and a first connecting screw, and the first wiring portion 42 is provided with a second hole. The first wiring portion 42 can rotate about the first connecting screw, and the first connecting screw secures the first connecting portion 41 and the first wiring portion 42 via the first and second holes. In another implementation, the first connecting portion 41 is provided with an elastic clamping portion, wherein a first rotation axis is provided within the elastic clamping portion. The first wiring portion 42 extends into the elastic clamping portion, rotates about the first rotation axis, and is clamped and secured by the elastic clamping portion. The first rotation axis serves to connect and rotate the first wiring portion 42, preventing it from falling out of the elastic clamping portion. The elastic clamping portion increases the contact pressure between the first wiring portion 42 and the first connecting portion 41. The elastic clamping portion is two elastic clamping pieces, and the first rotating shaft is arranged through the two elastic clamping pieces.

[0076] like Figure 10-11As shown, the second wiring portion 52 is provided with a wiring hole that matches the wiring terminal, and the wiring terminal is provided with a wiring screw that passes through the wiring hole. The wiring screw is used to directly or indirectly fix the external wire to the second wiring portion 52. The second connecting portion 51 includes a lower connecting portion 53 and an upper connecting portion 54 connecting the lower connecting portion 53 and the second wiring portion 52. The lower connecting portion 53 is provided with a connecting hole for connecting to a soft conductor. The soft conductor is used to connect to the moving contact. The upper connecting portion 54 is respectively connected to the lower connecting portion 53 and the second wiring portion 52. Arranged at an oblique or right angle, the upper connecting portion 54 is provided with a tripping protection mechanism 31 comprising a bimetallic strip 311 and an armature 312. When the short-circuit current passing through the upper connecting portion 54 meets a threshold, the upper connecting portion 54 attracts the armature 312, triggering the operating mechanism 2 to trip. When the overload current passing through the upper connecting portion 54 meets a threshold, the upper connecting portion 54 heats the bimetallic strip 311, bending it and triggering the operating mechanism 2 to trip, thereby achieving short-circuit protection and overload protection, respectively. In this embodiment, the second connecting portion 51 and the second wiring portion 52 are integrally formed, i.e., the lower connecting portion 53, the upper connecting portion 54, and the second wiring portion 52 are integrally formed.

[0077] Preferably, as another embodiment, the upper connecting portion 54 is rotatably connected to the second wiring portion 52, and the second wiring portion 52 can rotate relative to the upper connecting portion 54, so that the second wiring portion 52 can change the wiring direction and extend from any one of the two second side plates 12 to be used for any one of the two phase pole units 3. Similarly, the second wiring portion 52 can be provided with a second elastic clamping portion, and a second rotation axis is provided in the second elastic clamping portion. The upper connecting portion 54 can extend into the second elastic clamping portion and rotate around the second rotation axis and be clamped and fixed by the second elastic clamping portion. The second rotation axis plays a role in connection and rotation to prevent falling off, and the second elastic clamping portion increases contact pressure.

[0078] Furthermore, the tripping protection mechanism 31 includes a U-shaped magnetic yoke 313, and the armature 312 is rotatably connected to the two opposite sides of the magnetic yoke 313, and the upper connecting part 54 and the bimetallic strip 311 are respectively arranged between the magnetic yoke 313 and the armature 312, and the upper connecting part 54 and the bimetallic strip 311 are respectively fixedly connected to the upper connecting part 54.

[0079] It can be understood that the tripping protection mechanism 31 can also have a leakage protection function, and a zero-sequence current transformer is set. The main circuits of all phase pole units 3 pass through the zero-sequence current transformer respectively to detect the leakage signal, and trigger the operating mechanism 2 to trip when the leakage signal meets the threshold. All of these fall within the protection scope of the present invention.

[0080] like Figure 1-2As shown, the housing 1 is provided with an exhaust port 6 corresponding to the phase pole unit 3. The housing 1 is provided with an exhaust port 6 corresponding to the phase pole unit 3. The exhaust port 6 of one of the two adjacent phase pole units 3 is arranged on the second side plate 12, and the exhaust port 6 of the other phase pole unit 3 is arranged on the other second side plate 12 or on the first side plate 11, so that the exhaust ports 6 of at least two phase pole units are in different directions. It is understandable that the exhaust port 6 of one phase pole unit 3 can also be arranged on the first side plate 11 of one phase pole unit 3, and the exhaust port 6 of the other phase pole unit 3 can be arranged on the second side plate 12 on the side of the other phase pole unit 3, that is, the exhaust ports 6 of the two phase pole units 3 are arranged in perpendicular directions. In other embodiments, three or four phase pole units 3 are provided, and the exhaust port 6 of the third phase pole unit 303 is provided on the first side plate 11. The exhaust ports 6 of the first phase pole unit 301 and the second phase pole unit 302 are respectively provided on the second side plate 12 on the side of the first phase pole unit 301 and the second phase pole unit 302 away from the third phase pole unit 303. The exhaust ports 6 of the first phase pole unit 301 and the second phase pole unit 302 are respectively provided perpendicular to the exhaust port 6 of the third phase pole unit 303. Of course, only one exhaust port 6 of the first phase pole unit 301 and the second phase pole unit 302 may be provided perpendicular to the exhaust port 6 of the third phase pole unit 303, and the other exhaust port 6 may be provided parallel to the exhaust port 6 of the third phase pole unit 303, and both fall within the scope of protection of the present invention.

[0081] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0082] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker, comprising a housing (1), an operating mechanism (2) arranged in the housing (1), and at least two phase pole units (3) arranged side by side, wherein the housing (1) comprises two first side plates (11) arranged opposite to each other, two second side plates (12) arranged opposite to each other, and a bottom plate and a top plate arranged opposite to each other, at least one partition plate (13) for separating the phase pole units (3) is further provided between the two second side plates (12), the first side plate (11) is perpendicular to a first direction, the second side plate (12) and the partition plate (13) are perpendicular to a second direction, the bottom plate and the top plate are perpendicular to a third direction, the first direction, the second direction and the third direction are perpendicular to each other, each phase pole unit (3) comprises two wiring structures, the two wiring structures of each phase pole unit respectively serving as an inlet terminal and an outlet terminal of the phase pole unit, Its characteristics are: The two wiring structures are respectively a first wiring structure (4) and a second wiring structure (5); the first wiring structure (4) of one phase pole unit (3) of two adjacent phase pole units (3) extends from a second side plate (12), and the first wiring structure (4) of the other phase pole unit (3) extends from the other second side plate (12) or extends from the first side plate (11); the second wiring structure (5) of one phase pole unit (3) of two adjacent phase pole units (3) extends from a second side plate (12), and the second wiring structure (5) of the other phase pole unit (3) extends from the other second side plate (12) or extends from the first side plate (11).

2. The circuit breaker according to claim 1, wherein: The housing (1) is provided with an exhaust port (6) corresponding to the phase pole unit (3); the exhaust port (6) of one of two adjacent phase pole units (3) is arranged on the second side plate (12), and the exhaust port (6) of the other phase pole unit (3) is arranged on the other second side plate (12) or on the first side plate (11).

3. The circuit breaker according to claim 1, wherein: The invention comprises two phase pole units (3), wherein the first connection structure (4) and the second connection structure (5) of one phase pole unit (3) both extend from the same second side plate (12), and the exhaust port (6) connected to the arc extinguishing mechanism (33) of the one phase pole unit (3) is also arranged on the one second side plate (12); and the first connection structure (4) and the second connection structure (5) of the other phase pole unit (3) both extend from the other second side plate (12), and the exhaust port (6) connected to the arc extinguishing mechanism (33) of the other phase pole unit (3) is also arranged on the other second side plate (12).

4. The circuit breaker according to claim 1, wherein: The invention comprises two phase pole units (3), wherein the first connection structure (4) and the second connection structure (5) of one phase pole unit (3) both extend from the second side plate (12), and the first connection structure (4) and the second connection structure (5) of the other phase pole unit (3) respectively extend from the two first side plates (11), or respectively extend from the first side plate (11) and the other second side plate (12).

5. The circuit breaker according to claim 1, wherein: The invention comprises two phase pole units (3), wherein a first wiring structure (4) of one phase pole unit (3) and a second wiring structure (5) of the other phase pole unit (3) respectively extend from a second side plate (12) and a first side plate (11), and the second wiring structure (5) of one phase pole unit (3) and the first wiring structure (4) of the other phase pole unit (3) respectively extend from another first side plate (11) and another second side plate (12), so that at least two first wiring structures (4) and at least two second wiring structures (5) are respectively arranged on four different side surfaces.

6. The circuit breaker according to claim 1, wherein: The invention comprises three phase pole units (3), the three phase pole units (3) being respectively a first phase pole unit (301), a second phase pole unit (302) and a third phase pole unit (303); the third phase pole unit (303) being arranged between the first phase pole unit (301) and the second phase pole unit (302); the first connection structure (4) and the second connection structure (5) of the third phase pole unit (303) respectively extending from two first side plates (11); the first connection structure (4) and the second connection structure (5) of the first phase pole unit (301) both extending from the second side plate (12); and the first connection structure (4) and the second connection structure (5) of the second phase pole unit (302) both extending from the other second side plate.

7. The circuit breaker according to any one of claims 1 to 6, characterized in that: The first wiring structure (4) includes a first connecting portion (41) and a first wiring portion (42) connected to the first connecting portion (41); the second wiring structure (5) includes a second connecting portion (51) and a second wiring portion (52) connected to the second connecting portion (51); the first connecting portion (41) is used to connect to the static contact (35); the second connecting portion (51) is used to electrically connect to the moving contact; the first wiring portion (42) and the second wiring portion (52) respectively extend outside the housing for connecting to external wires.

8. The circuit breaker according to claim 7, wherein: The first wiring portion (42), the first connecting portion (41), the static contact (35), the moving contact (34), the second connecting portion (51), and the second wiring portion (52) are used to form a main circuit of the phase pole unit (3); the main circuits of at least two phase pole units (3) are U-shaped, and the main circuits of the two phase pole units (3) do not cross.

9. The circuit breaker according to claim 7, wherein: The first connecting portion (41) is arranged parallel to the side of the first wiring portion (42), a first supporting portion (43) is provided between the first connecting portion (41) and the first wiring portion (42), the first supporting portion (43) is connected between the first connecting portion (41) and the first wiring portion (42), a static contact (35) is provided on the first connecting portion (41), and a wiring hole matching with a wiring terminal is provided on the first wiring portion (42).

10. The circuit breaker according to claim 7, wherein: The first connecting portion (41) is rotatably connected to the first connecting portion (42).

11. The circuit breaker according to claim 10, wherein: The first connecting portion (41) is provided with an elastic clamping portion, a first rotating shaft is provided in the elastic clamping portion, and the first wiring portion (42) extends into the elastic clamping portion, rotates around the first rotating shaft, and is clamped and fixed by the elastic clamping portion.

12. The circuit breaker according to claim 7, wherein: The first connection portion (42) is provided with a connection hole that cooperates with a connection terminal. The second connection portion (51) includes a lower connection portion (53) and an upper connection portion (54) connected between the lower connection portion (53) and the second connection portion (52). The lower connection portion (53) is connected to the moving contact (34) through a soft conductor, and the upper connection portion (54) is provided with a tripping protection mechanism (31).

13. The circuit breaker according to claim 12, wherein: The tripping protection mechanism (31) includes a U-shaped magnetic yoke (313), an armature (312) rotatably connected to two opposite sides of the magnetic yoke (313), an upper connecting portion (54) and a bimetallic strip (311) are respectively arranged between the magnetic yoke (313) and the armature (312), and the magnetic yoke (313) and the bimetallic strip (311) are respectively fixedly connected to the upper connecting portion (54).

14. The circuit breaker according to claim 1, wherein: Each phase pole unit comprises a tripping protection mechanism (31), a contact system (32) and an arc extinguishing mechanism (33) arranged between the second side plate (12) and the partition (13) or between two adjacent partitions (13); the contact system (32) comprises a moving contact (34) and a stationary contact (35); the moving contact (34) and the stationary contact (35) are respectively electrically connected to the two wiring structures.

15. The circuit breaker according to claim 12, wherein: The upper connecting portion (54) and the second connecting portion (52) are rotatably connected, and the second connecting portion (52) can rotate relative to the upper connecting portion (54).

16. The circuit breaker according to claim 2, wherein: The invention comprises three phase pole units (3), the three phase pole units (3) being respectively a first phase pole unit (301), a second phase pole unit (302) and a third phase pole unit (303); the third phase pole unit (303) being arranged between the first phase pole unit (301) and the second phase pole unit (302); the exhaust port (6) of the third phase pole unit (303) being arranged on the first side plate (11); the exhaust ports (6) of the first phase pole unit (301) and the second phase pole unit (302) being arranged on the two second side plates (12); and the exhaust ports (6) of the first phase pole unit (301) and the second phase pole unit (302) being arranged perpendicular to the exhaust port (6) of the third phase pole unit (303).

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