An integrated ground fault circuit interrupter

Abstract

The application discloses an integrated leakage circuit breaker, which comprises an N-stage shell, an L-stage shell, a first operating mechanism, a second operating mechanism and an L-stage operating mechanism, wherein the N-stage shell is connected with an N-stage handle, the L-stage shell is connected with an L-stage handle, the second operating mechanism is connected with the L-stage operating mechanism, and the L-stage handle drives the N-stage handle to close when the L-stage handle drives the N-stage handle to close, the L-stage operating mechanism, the first operating mechanism and the second operating mechanism are synchronously closed, the L-stage operating mechanism and the second operating mechanism are synchronously opened when the L-stage handle is separately opened, the L-stage operating mechanism, the first operating mechanism and the second operating mechanism are synchronously opened when the N-stage handle drives the L-stage handle to open, and the first operating mechanism is closed when the N-stage handle is closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker, in particular to an integrated residual current circuit breaker. BACKGROUND

[0002] Residual current circuit breaker is widely used, mainly used in industrial, commercial, residential and other places, mainly used for short circuit overload protection and leakage protection.

[0003] Among them, the existing residual current circuit breaker includes N level module and L level module, wherein the N level module and the L level module are simultaneously opened and closed, but due to simultaneous opening and closing, it cannot be distinguished that the reason for opening, so it is necessary to set a kind of reason for distinguishing opening. SUMMARY

[0004] The purpose of the present application is to provide an integrated residual current circuit breaker to solve the above problems.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme:

[0006] An integrated residual current circuit breaker, comprising an N level shell, an intermediate shell and an L level shell, characterized in that the first operating mechanism and the second operating mechanism are arranged in the N level shell, the L level operating mechanism is arranged in the L level shell, the N level handle is connected with the first operating mechanism, the L level handle is connected with the L level operating mechanism, the second operating mechanism is connected with the L level operating mechanism, wherein when the L level handle drives the N level handle to close, the L level operating mechanism, the first operating mechanism and the second operating mechanism are closed synchronously, when the L level handle is opened alone, the L level operating mechanism and the second operating mechanism are opened synchronously, when the N level handle drives the L level handle to open, the L level operating mechanism, the first operating mechanism and the second operating mechanism are opened synchronously, and when the N level handle is closed, the first operating mechanism is closed.

[0007] The present application further provides that the N level handle extends to the side of the L level handle to form a stop block, and the stop block is located on the side of the closing direction.

[0008] The present application further provides that the second operating mechanism and the L level operating mechanism are provided with a linkage shaft, the linkage shaft passes through the intermediate shell from the L level operating mechanism to the second operating mechanism, the second operating mechanism is provided with an N level static contact, the L level operating mechanism is provided with an L level static contact, and in the closed state, the N level moving contact of the second operating mechanism is in contact with the N level static contact, and the L level moving contact of the L level operating mechanism is in contact with the L level static contact.

[0009] The application further provides that the L-level operating mechanism comprises an L-level movable contact support, a first linkage hole is formed in the L-level movable contact support, the second operating mechanism comprises a second support, a second linkage hole is formed in the second support, the first linkage hole is arranged opposite to the second linkage hole and is connected through a linkage shaft.

[0010] The application further provides that the intermediate shell is formed with a mounting column on one side close to the N-level shell, the second support is fixed on the intermediate shell through the mounting column, the N-level movable contact is arranged on the second support, the mounting column is recessed inward to form a hinged groove, a hinge shaft is arranged in the hinged groove, and the first operating mechanism is hinged to the intermediate shell through the hinge shaft.

[0011] The application further provides that the first operating mechanism comprises a first support, a jump buckle and a lock buckle are arranged on the first support and the L-level movable contact support, the jump buckle and the lock buckle are hinged on the corresponding first support or L-level movable contact support, the jump buckle is linked with the L-level handle or the N-level handle through a linkage rod, and the lock buckle is adaptively arranged with the jump buckle.

[0012] The application further provides that the mounting base comprises a first mounting base and a second mounting base, the first mounting base and the second mounting base are integrally formed in the accommodating cavity, a clamping groove is formed in the first mounting base and the second mounting base, a clamping block is formed on the arc extinguishing sheet, and the arc extinguishing sheet is clamped and mounted on the mounting base through the clamping groove and the clamping block.

[0013] The application further provides that the N-level static contact is fixedly installed on a static contact arc guiding plate, the static contact arc guiding plate is fixedly installed on the intermediate shell, a wiring plate is connected to the wiring terminal, the wiring plate is fixed on the intermediate shell, a first magnetic enhancement sheet is further arranged on the outer side of the static contact arc guiding plate, an arc guiding section is formed at one end of the wiring plate, a second magnetic enhancement sheet is arranged on the outer side of the arc guiding section, a placement groove is formed in the intermediate shell on the inner side of the wiring terminal, a magnet is arranged in the placement groove, and the magnet is arranged close to one side of the arc guiding section.

[0014] The application further provides that the outer side of the accommodating cavity is also provided with a cover, and the cover is fixed on the intermediate shell. The application includes at least one beneficial effect: 1. In the application, by providing the N-level handle and the L-level handle, and the corresponding first operating mechanism, the second operating mechanism and the L-level operating mechanism, the following functions are realized:

[0015] (1) When the fire line is closed, that is, the L-level handle is closed, the N-level handle is also closed; so that the entire circuit breaker is in the closed state;

[0016] (2) When the zero line is closed alone, that is, the N-level handle is closed, the fire line and the zero line are in a non-conductive state;

[0017] (3) When the fire line is closed alone, that is, the L-level handle is closed, it proves that the product is short-circuited or overloaded;

[0018] (4) When the zero line and the fire line are closed together, it proves that the circuit breaker is closed due to the leakage protection;

[0019] 2. A new arc extinguishing system is provided, the arc extinguishing system is provided with a plurality of parallel arc extinguishing pieces arranged in the accommodating cavity, the arc extinguishing cover and other accessories are reduced, and the volume is effectively reduced; the miniaturization of the residual current circuit breaker is realized; meanwhile, the corresponding first magnetic shunt and the second magnetic shunt are arranged on both sides of the arc extinguishing system, the arc extinguishing effect is improved, and a magnet is additionally arranged on one side of the second magnetic shunt, and the magnetic blow effect is improved; BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is an explosion schematic diagram of the embodiment of the present application;

[0022] Figure 2 It is an explosion schematic diagram of the embodiment of the present application after removing the intermediate shell;

[0023] Figure 3 It is a schematic diagram of the second operating mechanism of the embodiment of the present application;

[0024] Figure 4 It is an installation schematic diagram of the second support and the L-level contact support of the embodiment of the present application;

[0025] Figure 5 It is a sectional view of the second support and the L-level contact support of the embodiment of the present application;

[0026] Figure 6 It is an internal schematic diagram of the L-level module of the embodiment of the present application;

[0027] Figure 7 A perspective view of an embodiment of the present application with the intermediate housing removed;

[0028] Figure 8 A perspective view of an embodiment of the present application with the cover removed Figure 1 ;

[0029] Figure 9 A perspective view of an embodiment of the present application with the cover removed Figure 2 ;

[0030] Figure 10 A structural schematic diagram of an embodiment of the present application with the mounting base installed.

[0031] Reference numerals, 10, N-stage housing; 20, intermediate housing; 201, mounting column; 2011, hinged groove; 30, L-stage housing; 40, first operating mechanism; 401, first support; 50, second operating mechanism; 501, N-stage movable contact; 502, second support; 5021, second linkage hole; 60, L-stage operating mechanism; 601, L-stage movable contact; 602, L-stage movable contact support; 6021, first linkage hole; 70, L-stage handle; 80, N-stage handle; 80a, stop block; 90, electromagnetic tripping assembly; 100, electronic tripping assembly; 110, linkage shaft; 120, N-stage static contact; 130, L-stage static contact; 140, jump buckle; 150, lock buckle; 160, spring; 170, accommodating cavity; 180, wiring terminal; 190, arc extinguishing sheet; 200, first mounting base; 210, second mounting base; 220, clamping groove; 230, clamping block; 240, static contact arc striking plate; 250, wiring plate; 260, first magnetic enhancement sheet; 270, second magnetic enhancement sheet; 280, installation groove; 290, magnet; 300, cover; 310, linkage rod; DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail hereinafter with reference to the drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented.

[0033] Embodiment 1:

[0034] As Figures 1-6As shown, the application is a kind of integral leakage circuit breaker, including N level shell 10, intermediate shell 20 and L level shell 30, the first operating mechanism 40 and second operating mechanism 50 are arranged in the N level shell 10, the L level operating mechanism is arranged in the L level shell 30, the N level handle 80 is connected with the first operating mechanism 40, the L level handle 70 is connected with the L level operating mechanism 60, the second operating mechanism 50 is linked with the L level operating mechanism 60, wherein when the L level handle 70 drives N level handle 80 closing, the L level operating mechanism 60, the first operating mechanism 40, the second operating mechanism 50 are synchronous closing;When the L level handle 70 is separately opened, the L level operating mechanism 60 and the second operating mechanism 50 are synchronous opened;When the N level handle 80 drives L level handle 70 opening, the L level operating mechanism 60, the first operating mechanism 40, the second operating mechanism 50 are synchronous opened, when the N level handle 80 closing, the first operating mechanism 40 closing, in addition, electromagnetic tripping assembly 90 is arranged on one side of L level operating mechanism 60, and electronic tripping assembly 100 is arranged on one side of first operating mechanism 40, based on the above principle, it can be judged that the circuit breaker is opened due to what reason;Combined with the following technical features:

[0035] The N level handle 80 extends to one side of L level handle 70 and forms a stop block 80a, the stop block 80a is located on one side of the closing direction, the stop block 80a can drive N level handle 80 closing when L level handle 70 closing, and can drive N level handle 80 opening when L level handle 70 opening, but it will not affect L level handle 70 opening alone, nor N level handle 80 closing alone.

[0036] The above technical solutions can realize the following functions of the application:

[0037] (1) When the fire line closing, that is, L level handle 70 closing, N level handle 80 also closing, so that the whole circuit breaker is in closing state;

[0038] (2) When the zero line alone closing, that is, N level handle 80 closing, the fire line and the zero line are in non-conducting state;

[0039] (3) When the fire line alone opening, that is, L level handle 70 opening, it proves that the product is short-circuit or overload, and the electromagnetic tripping works;

[0040] (4) When the zero line and the fire line jointly opening, that is, N level handle 80 drives L level handle 70 opening, it proves that the opening is due to the reason of leakage protection, and the electronic tripping works;

[0041] At the same time, the respective operating mechanism is matched, that is, the following technology is used to describe the principle of tripping:

[0042] The second operating mechanism 50 is provided with a linkage shaft 110 from the L-level operating mechanism 60 through the intermediate housing 20 to the second operating mechanism 50, the second operating mechanism 50 is correspondingly provided with an N-level static contact 120, the L-level operating mechanism 60 is correspondingly provided with an L-level static contact 130, in the closed state, the N-level moving contact 501 of the second operating mechanism 50 is in contact with the N-level static contact 120, the L-level moving contact 601 of the L-level operating mechanism 60 is in contact with the L-level static contact 130, the L-level operating mechanism 60 comprises an L-level moving contact bracket 602, the L-level moving contact 601 is arranged on the L-level moving contact bracket 602, a first linkage hole 6021 is formed in the L-level moving contact bracket 602, the second operating mechanism 50 comprises a second bracket 502, a second linkage hole 5021 is arranged on the second bracket 502, the first linkage hole 6021 and the second linkage hole 5021 are oppositely arranged and connected through the linkage shaft 110, one side of the intermediate housing 20 close to the N-level housing 10 is formed with a mounting column 201, the second bracket 502 is fixed on the intermediate housing 20 through the mounting column 201, the N-level moving contact 501 is arranged on the second bracket 502, the mounting column 201 is inwardly recessed to form a hinged groove 2011, a hinge shaft (not shown in the figure) is arranged in the hinged groove 2011, and the first operating mechanism 40 is hinged to the intermediate housing 20 through the hinge shaft.

[0043] The first operating mechanism 40 comprises a first bracket 401, the first bracket 401 and the L-level moving contact bracket 602 are both provided with a jump buckle 140 and a lock buckle 150, the jump buckle 140 and the lock buckle 150 are hinged on the corresponding first bracket 401 or L-level moving contact bracket 602, the jump buckle 140 is linked with the L-level handle 70 or N-level handle 80 through a linkage rod 310, and the lock buckle 150 is adaptively arranged with the jump buckle 140, wherein a spring 160 is also mounted on the L-level moving contact bracket 602, two ends of the spring 160 are respectively abutted with the L-level moving contact bracket 602 and the L-level housing 30, and the L-level handle 70 provides a restoring force when resetting in the open state.

[0044] In the closing process, the L-stage handle 70 and the N-stage are rotated to the closing position, but at this time, the jump buckle 140 and the lock buckle 150 are in the state of abutting and limiting, so the linkage rod 310 pushes the whole L-stage moving contact support 602 to rotate, and the second support 502 of the second operating mechanism 50 is also rotated, so that the moving and static contacts in the N-stage and the L-stage are in contact, and the product is in the conducting state; when the product is overloaded or short-circuited, the electromagnetic release acts, the push rod pushes the lock buckle 150, the limiting effect of the lock buckle 150 and the jump buckle 140 is removed, so as to drive the L-stage moving contact 601 of the L-stage operating mechanism 60 to separate from the L-stage static contact 130, and at the same time, the N-stage moving contact 501 and the N-stage static contact 120 on the second operating mechanism 50 are separated, and at this time, the N-stage handle 80 has not been opened;

[0045] When the N-stage handle 80 is opened, it is realized by the electronic release, at this time, the N-stage handle 80 drives the L-stage handle 70 to open together;

[0046] Embodiment 2:

[0047] Most of the existing residual current circuit breakers contain N-stage modules, so that the corresponding arc extinguishing systems are arranged in the two modules, but most of the existing arc extinguishing systems are in the form of arranging arc extinguishing pieces 190 in the arc extinguishing cover, which has a large volume, so that the volume of the whole N-stage will also be large, in order to solve the above technical problems, the technical scheme is further adopted in the present application:

[0048] As Figures 7-10As shown, the intermediate shell 20 is formed with a containing cavity 170 near one side of the N-stage shell 10, the containing cavity 170 is located between the N-stage static contact 120 and the wiring terminal 180, an arc extinguishing system is arranged in the containing cavity 170, the arc extinguishing system comprises arc extinguishing sheets 190 and mounting bases for fixing the arc extinguishing sheets 190, the arc extinguishing sheets 190 are clamped on the mounting bases, the mounting bases comprise first mounting bases 200 and second mounting bases 210, the first mounting bases 200 and the second mounting bases 210 are integrally formed in the containing cavity 170, clamping grooves 220 are formed in the first mounting bases 200 and the second mounting bases 210, clamping blocks 230 are formed on the arc extinguishing sheets 190, the arc extinguishing sheets 190 are clamped on the mounting bases through the clamping grooves 220 and the clamping blocks 230, the N-stage static contact 120 is fixedly installed on a static contact arc drawing plate 240, the static contact arc drawing plate 240 is fixedly installed on the intermediate shell 20, a wiring plate 250 is connected to the wiring terminal 180, the wiring plate 250 is fixed on the intermediate shell 20, a first magnetic enhancement sheet 260 is arranged outside the static contact arc drawing plate 240, one end of the wiring plate 250 extends to form an arc drawing section, a second magnetic enhancement sheet 270 is arranged outside the arc drawing section, a placement groove 280 is formed in the intermediate shell 20 inside the wiring terminal 180, a magnet 290 is arranged in the placement groove 280, the magnet 290 is arranged near one side of the arc drawing section, a cover 300 is further arranged outside the containing cavity 170, the cover 300 is fixed on the intermediate shell 20, the new arc extinguishing system is arranged above, the arc extinguishing system adopts multiple parallel arc extinguishing sheets 190 arranged in the containing cavity 170, reduces other accessories such as arc extinguishing covers, and can effectively reduce the volume; realizes miniaturization of the residual current circuit breaker; meanwhile, corresponding first magnetic enhancement sheets 260 and second magnetic enhancement sheets 270 are arranged on both sides of the arc extinguishing system, the arc extinguishing effect is improved; in addition, a magnet 290 is further arranged on one side of the second magnetic enhancement sheet 270, the magnetic blow effect is improved; as some terms are used in the description and claims to refer to specific components, those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The description and claims of the present application do not distinguish components by name difference, but by functional difference. As mentioned throughout the description and claims, "comprising" is an open term, which should be interpreted as "comprising but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0049] More use of terms such as 10, N level shell; 20, intermediate shell; 201, mounting column; 2011, hinged groove; 30, L level shell; 40, first operating mechanism; 401, first support; 50, second operating mechanism; 501, N level moving contact; 502, second support; 5021, second linkage hole; 60, L level operating mechanism; 601, L level moving contact; 602, L level moving contact support; 6021, first linkage hole; 70, L level handle; 80, N level handle; 80a, stop block; 90, electromagnetic trip assembly; 100, electronic trip assembly; 110, linkage shaft; 120, N level static contact; 130, L level static contact; 140, jump buckle; 150, lock buckle; 160, spring; 170, containing cavity; 180, terminal; 190, arc extinguishing piece; 200, first mounting base; 210, second mounting base; 220, clamping groove; 230, clamping block; 240, static contact arc striking plate; 250, wiring board; 260, first magnetic enhancement piece; 270, second magnetic enhancement piece; 280, installation groove; 290, magnet; 300, cover; 310, linkage rod, it is need to explain that, the terms "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the goods or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in such goods or system. Without more limitation, the element defined by the statement "including a…" does not exclude the existence of other identical elements in the goods or system including the element.

[0050] The above description shows and describes several preferred embodiments of the present application, but as previously discussed, it is understood that the present application is not limited to the forms disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be modified by the above teachings or related art or knowledge in the field, within the scope of the invention described herein. The modifications and changes made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. An integrated ground fault circuit interrupter comprising an N stage housing, an intermediate housing, and an L stage housing, characterized in that, The first operating mechanism and the second operating mechanism are arranged in the N-level shell, the L-level operating mechanism is arranged in the L-level shell, the first operating mechanism is connected with the N-level handle, the L-level operating mechanism is connected with the L-level handle, the second operating mechanism is connected with the L-level operating mechanism in linkage, when the L-level handle drives the N-level handle to close, the L-level operating mechanism, the first operating mechanism and the second operating mechanism are closed synchronously, when the L-level handle is closed alone, the L-level operating mechanism and the second operating mechanism are opened synchronously, when the N-level handle drives the L-level handle to open, the L-level operating mechanism, the first operating mechanism and the second operating mechanism are opened synchronously, when the N-level handle is closed, the first operating mechanism is closed, the L-level operating mechanism comprises an L-level movable contact support, a first linkage hole is arranged on the L-level movable contact support, the second operating mechanism comprises a second support, a second linkage hole is arranged on the second support, the first linkage hole and the second linkage hole are arranged oppositely and are connected through a linkage shaft, a spring is further arranged on the L-level movable contact support, and the two ends of the spring are respectively abutted against the L-level movable contact support and the L-level shell, and the L-level handle provides a restoring force when being reset when being opened.

2. The integral ground fault circuit interrupter of claim 1, wherein, The N-level handle extends to the side of the L-level handle and forms a stop block, and the stop block is located on the side of the closing direction.

3. The integral ground fault circuit interrupter of claim 2, wherein: The second operating mechanism and the L-level operating mechanism are provided with a linkage shaft, the linkage shaft passes through the intermediate shell from the L-level operating mechanism and is arranged on the second operating mechanism, the second operating mechanism is correspondingly provided with an N-level static contact, and the L-level operating mechanism is correspondingly provided with an L-level static contact, in the closed state, the N-level movable contact of the second operating mechanism is in contact with the N-level static contact, and the L-level movable contact of the L-level operating mechanism is in contact with the L-level static contact.

4. The integral ground fault circuit interrupter of claim 3, wherein, An installation column is formed on the side of the intermediate shell close to the N-level shell, the second support is fixed on the intermediate shell through the installation column, the N-level movable contact is arranged on the second support, the installation column is recessed inwardly and forms a hinged groove, a hinge shaft is arranged in the hinged groove, and the first operating mechanism is hinged to the intermediate shell through the hinge shaft.

5. The integral ground fault circuit interrupter of claim 4, wherein, The first operating mechanism comprises a first support, the first support and the L-level movable contact support are both provided with a jump buckle and a lock buckle, the jump buckle and the lock buckle are hinged to the corresponding first support or L-level movable contact support, the jump buckle is linked with the L-level handle or the N-level handle through a linkage rod, and the lock buckle is adaptively arranged with the jump buckle.

6. The integral ground fault circuit interrupter of claim 3, wherein, An accommodating cavity is formed on the side of the intermediate shell close to the N-level shell, the accommodating cavity is located between the N-level static contact and a terminal, an arc extinguishing system is arranged in the accommodating cavity, the arc extinguishing system comprises an arc extinguishing sheet and a mounting base for fixing the arc extinguishing sheet, and the arc extinguishing sheet is clamped on the mounting base.

7. The integral ground fault circuit interrupter of claim 6, wherein, The mounting base comprises a first mounting base and a second mounting base, which are integrally formed in the accommodating cavity, and a clamping groove is formed in the first mounting base and the second mounting base, a clamping block is formed on the arc extinguishing sheet, and the arc extinguishing sheet is mounted on the mounting base through clamping of the clamping groove and the clamping block.

8. The integral ground fault circuit interrupter of claim 7, wherein, The N-stage static contact is fixedly installed on a static contact arc striking plate, the static contact arc striking plate is fixedly installed on the intermediate shell, a wiring plate is connected to the wiring terminal, the wiring plate is fixed to the intermediate shell, a first magnetic enhancement sheet is arranged on the outer side of the static contact arc striking plate, one end of the wiring plate extends to form an arc striking section, a second magnetic enhancement sheet is arranged on the outer side of the arc striking section, a placement groove is formed in the intermediate shell on the inner side of the wiring terminal, a magnet is arranged in the placement groove, and the magnet is arranged close to one side of the arc striking section.

9. The integral ground fault circuit interrupter of claim 8, wherein, An outer side of the accommodating cavity is further provided with a cover, and the cover is fixed to the intermediate shell.

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