CN217280619U

CN217280619U - Circuit breaker shell

Info

Publication number: CN217280619U
Application number: CN202121991524.3U
Authority: CN
Inventors: 李若亚; 胡德; 王晋; 张宝樵
Original assignee: Yueqing Hoyoung Electric Technology Co ltd; Wenzhou Aike Electric Appliance Technology Co ltd
Current assignee: Yueqing Hoyoung Electric Technology Co ltd; Wenzhou Aike Electric Appliance Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-08-23
Anticipated expiration: 2031-08-23

Abstract

The application discloses a circuit breaker shell, which comprises a first shell and a second shell which are mutually covered, and further comprises mounting plates arranged in the first shell and the second shell, wherein a first coil mounting frame is arranged on the inner side wall of the first shell, a second coil mounting frame is arranged on the inner side wall of the second shell, and the first coil mounting frame and the second coil mounting frame are arranged side by side; be provided with the multiunit bimetallic strip installing zone on the mounting panel, the bimetallic strip installing zone sets up respectively on the lateral wall that the mounting panel deviates from each other, and the bimetallic strip installing zone is respectively towards respective relative first shell or second shell. This application has the space utilization who has improved first shell and second shell, has realized adopting single module casing just can carry out short-circuit protection and overload protection's effect simultaneously to at least two sets of external circuit simultaneously.

Description

Circuit breaker shell

Technical Field

The utility model belongs to the technical field of the circuit breaker and specifically relates to a circuit breaker casing is related to.

Background

The circuit breaker is a mechanical switch appliance which can switch on, bear and break current under normal circuit conditions, and also can switch on, bear and break current for a certain time under specified abnormal circuit conditions. The miniature circuit breaker is also a terminal protection electric appliance which is most widely used in a power distribution device of a building electric terminal, and is mainly used for single-phase and three-phase short circuit, overload, overvoltage and other protection, and the miniature circuit breaker can be divided into four types, namely a single pole 1P, a two pole 2P, a three pole 3P, a four pole 4P and the like according to type division.

A 1P miniature circuit breaker casing in the related art is generally formed by assembling a first casing and a second casing, and due to the influence of the internal structure of the casing, only one group of short-circuit protection mechanisms (i.e. electromagnetic tripping) and one group of overload protection mechanisms (bimetal thermal tripping) can be installed, and each group of circuits needs one group of short-circuit protection mechanisms and one group of overload protection mechanisms for protection; finally, the single-module shell can only protect one group of external circuits, and when a plurality of groups of external circuits are needed, the increased circuits can only be subjected to short-circuit protection and overload protection simultaneously by increasing the corresponding number of shells, so that the utilization rate of the inner space of the shell is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that traditional circuit breaker casing inner space utilization is low on the low side, this application provides a circuit breaker casing.

A circuit breaker shell comprises a first shell and a second shell which are mutually covered, and further comprises mounting plates arranged in the first shell and the second shell, wherein a first coil mounting frame is arranged on the inner side wall of the first shell, a second coil mounting frame is arranged on the inner side wall of the second shell, and the first coil mounting frame and the second coil mounting frame are arranged side by side; be provided with the multiunit bimetallic strip installing zone on the mounting panel, the bimetallic strip installing zone sets up respectively on the lateral wall that the mounting panel deviates from each other, and the bimetallic strip installing zone is respectively towards first shell or second shell relative separately.

By adopting the technical scheme, the first coil mounting frame and the second coil mounting frame which are arranged side by side meet the requirement that two groups of electromagnetic coils can be simultaneously mounted in one shell, and the internal space of the first shell and the second shell is fully utilized; the space utilization rate of the first shell and the second shell is improved, so that the internal space layout of the first shell and the second shell is more reasonable; moreover, a plurality of groups of bimetallic strip mounting areas for mounting bimetallic strips are arranged on the mounting plate, so that each group of external circuits can have independent overload protection; finally, the effect of simultaneously carrying out short-circuit protection and overload protection on at least two groups of external circuits by adopting a single module shell is realized, and the layout in the shell is optimized.

Optionally, two sets of arc-extinguishing grid mounting areas are further arranged on the mounting plate, and the arc-extinguishing grid mounting areas are respectively located on one side of the adjacent bimetallic strip mounting areas.

Through adopting above-mentioned technical scheme, the setting of arc chute installing zone provides sufficient installation space for the installation of arc chute piece, when the circuit breaker is closing a floodgate or the in-process production electric arc of separating brake, through the arc chute of installing in the arc chute installing zone, can effectually correspond the electric arc that the side produced with the mounting panel and extinguish fast to can reduce the harmful effects that the electric arc that produces to inside electric elements.

Optionally, the arc chute mounting area is close to the second coil mounting bracket, and a first partition plate located between the arc chute mounting area and the second coil mounting bracket is arranged on the mounting plate.

Through adopting above-mentioned technical scheme, set up the first division board between arc chute installing zone and second coil mounting bracket, can effectively prevent the electric arc in the arc chute installing zone to enter into to the second coil mounting bracket in to can reduce electric arc and produce the interference to the solenoid in the second coil mounting bracket.

Optionally, the inner side walls of the first housing and the second housing are both provided with a second partition plate facing the mounting plate, and the second partition plate is located between the first partition plate and the arc chute mounting area; the second partition plate is parallel to the first partition plate.

By adopting the technical scheme, the second partition plate is used for placing the current-conducting plate, and the current-conducting plate is used for electrically connecting the external circuit with the corresponding electromagnetic coil and the bimetallic strip when in work; the setting of second division board provides the support for the installation of current conducting plate to through placing the current conducting plate at second division board and first division board support, thereby enable more stable and firm the installing on the mounting panel of current conducting plate.

Optionally, the mounting plate is provided with terminal mounting areas, and the terminal mounting areas are symmetrically arranged on two sides of the mounting plate, which are away from each other; the wiring terminal installation area quantity that is located the mounting panel homonymy is two sets of at least and is the symmetry setting.

By adopting the technical scheme, the wiring terminal mounting area is used for mounting the wiring terminal, and when the external circuit is connected, the external circuit is connected with the wiring terminal, so that the external circuit can be connected with the internal electric element; the arrangement of the terminal mounting area provides space for the mounting of the terminal.

Optionally, the first coil mounting bracket comprises a first insertion plate facing the second coil mounting bracket, an insertion groove with an opening facing the second coil mounting bracket is formed in the first insertion plate, the second coil mounting bracket comprises a second insertion plate facing the first insertion plate, an insertion block facing the insertion groove is formed in the second insertion plate, and the insertion block and the insertion groove are mutually inserted and combined.

By adopting the technical scheme, when the first shell and the second shell are mutually covered, the first plug board and the second plug board are mutually overlapped, and the plug block is gradually inserted into the plug groove; the two groups of electromagnetic coils can be separated through the first plug board and the second plug board which are mutually overlapped, so that the anti-breakdown effect is achieved, and the two groups of electromagnetic coils can be more stable in working; and through the mutual interpolation of grafting piece and inserting groove, can not only improve the stability that first plugboard and second plugboard are connected, can also increase the creepage distance of junction simultaneously, played the effect of preventing puncturing, still improved electrical insulation intensity simultaneously.

Optionally, the first coil mounting bracket further includes a third dividing plate located on one side of the first dividing plate deviating from the arc chute mounting area, and the second coil mounting bracket further includes a fourth dividing plate also located on one side of the first dividing plate deviating from the arc chute mounting area.

Through adopting above-mentioned technical scheme, when covering first shell and second shell each other, third division board can separate solenoid and electrically conductive piece, has increased creepage distance between the two, has improved electrical insulation strength, plays the effect of preventing puncturing, can also make both during operation more stable simultaneously.

Optionally, a first fastening groove is formed in the outer side wall of the first housing, a first fastening block is arranged on the side wall, close to the first fastening groove, of the mounting plate, and the first fastening block is fastened into the first fastening groove; and a second fastening groove is formed in the outer side wall of the second shell, a second clamping block is arranged on the side wall, close to the second fastening groove, of the mounting plate, and the second clamping block is fastened into the second fastening groove.

By adopting the technical scheme, when the first shell and the second shell are respectively arranged on two sides of the mounting plate, the first clamping block is clamped into the first buckling groove, and the first shell and the mounting plate can be connected by buckling the first clamping block and the first buckling groove; the second clamping block is clamped into the second buckling groove, and the second shell and the mounting plate can be connected and fixed through mutual buckling of the second clamping block and the second buckling groove; the whole installation process is very convenient and fast, and meanwhile, the first shell and the second shell are convenient to disassemble.

In summary, the present application includes at least one of the following beneficial technical effects:

the effect of simultaneously carrying out short-circuit protection and overload protection on at least two groups of external circuits by adopting the single-module shell is realized, and the layout in the shell is optimized.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is an exploded view of the partial structure of fig. 1.

Fig. 3 is an exploded view of the partial structure of fig. 2 from another perspective.

Fig. 4 is a partial structural view showing the mounting plate in a highlighted manner.

Description of reference numerals:

1. a first housing; 11. a first coil mounting bracket; 111. a first patch panel; 112. inserting grooves; 113. a third partition plate; 12. a second coil mounting bracket; 121. a second patch panel; 122. an insertion block; 123. a fourth partition plate; 13. a first catching groove; 2. a second housing; 21. a second catching groove; 3. mounting a plate; 31. a bimetal mounting area; 32. a first partition plate; 33. a second partition plate; 34. a terminal mounting area; 35. a first clamping block; 36. a second fixture block; 4. an arc chute mounting area; 41. mounting a bar; 42. and (4) a slot.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a circuit breaker shell. Referring to fig. 1, the circuit breaker case includes a first case 1 and a second case 2 that are covered with each other, and a mounting plate 3 disposed between the first case 1 and the second case 2, and the mounting plate 3 partitions a space formed inside the first case 1 and the second case 2.

As shown in fig. 2 and 3, a first coil mounting bracket 11 for placing an electromagnetic coil is integrally formed on an inner side wall of the first housing 1, and a second coil mounting bracket 12 for placing another set of electromagnetic coils is integrally formed on an inner side wall of the second housing 2. When the first housing 1 and the second housing 2 are mutually covered, the first coil mounting bracket 11 and the second coil mounting bracket 12 are arranged side by side.

As shown in fig. 2 and 3, a plurality of sets of bimetal installing areas 31 for placing the bimetal are formed on the installing plate 3, the number of the bimetal installing areas 31 in the embodiment is two, and the two sets of bimetal installing areas 31 are symmetrically arranged on the side walls of the installing plate 3 which deviate from each other. And the bimetal mounting area 31 faces the respective opposite first housing 1 or second housing 2.

As shown in fig. 3 and 4, two sets of arc chute mounting areas 4 are integrally formed on the mounting plate 3, and the arc chute mounting areas 4 are respectively located on one side of the adjacent bimetallic strip mounting areas 31. Two sets of mounting bars 41 which are arranged oppositely are included in the arc chute mounting area 4, and the mounting bars 41 are integrally formed on the mounting plate 3. The opposite side walls of the mounting bar 41 in the same arc chute mounting area 4 are provided with slots 42 for the arc chutes to be inserted, the slots 42 on the two sides are arranged in a one-to-one manner, and the slots 42 in the same mounting bar 41 are sequentially and uniformly spaced along the length direction of the mounting bar 41. The arc chute mounting areas 4 on both sides are located below the second coil mounting frame 12. A first partition plate 32 is integrally formed on a side wall of the second coil mounting bracket 12 facing upward of the mounting plate 3, and a length direction of the first partition plate 32 extends along a length direction of the first housing 1. And the first divider plate 32 is located between the arc chute mounting area 4 and the second coil mounting bracket 12.

As shown in fig. 2 and 3, the inner side walls of the first housing 1 and the second housing 2 are integrally formed with a second partition plate 33 facing the mounting plate 3, the length direction of the second partition plate 33 extends along the length direction of the first housing 1, and the second partition plates 33 on both sides are located on the same horizontal plane. The second division boards 33 of both sides are the symmetry and set up on the lateral wall that mounting panel 3 deviates from each other to mounting panel 3 separates the second division board 33 of both sides. The second separation plate 33 is used for placing a conductive plate connected with an external circuit, meanwhile, the second separation plate 33 is also positioned between the first separation plate 32 and the arc chute installation area 4, the second separation plate 33 is parallel to the first separation plate 32, and a space for placing the conductive plate is reserved between the second separation plate 33 and the respectively opposite first separation plate 32.

As shown in fig. 2 and 3, the first coil mounting bracket 11 includes a first insertion plate 111 facing the second coil mounting bracket 12, the first insertion plate 111 extends along the height direction of the first housing 1, and an insertion groove 112 with an opening facing the second coil mounting bracket 12 is formed on a side wall of the first insertion plate 111 close to the mounting plate 3. The second coil mounting bracket 12 includes a second insertion plate 121 facing the first insertion plate 111, and the second insertion plate 121 extends in the height direction of the second housing 2. The second inserting plate 121 is provided with an inserting block 122 facing the inserting groove 112, when the first housing 1 and the second housing 2 are mutually covered, the first inserting plate 111 and the second inserting plate 121 will be mutually overlapped, and the inserting block 122 will be gradually inserted into the inserting groove 112. The two groups of electromagnetic coils can be separated through the first plug board 111 and the second plug board 121 which are overlapped with each other, so that the two groups of electromagnetic coils are more stable in operation. And the plug-in block 122 will be inserted into the plug-in slot 112, and then the creepage distance of the junction of the first plug-in board 111 and the second plug-in board 121 is increased, further improving the stability of the electromagnetic coil during operation.

As shown in fig. 2 and 3, the first coil mounting bracket 11 further includes a third dividing plate 113 located on a side of the first dividing plate 32 facing away from the arc chute mounting area 4. The third partition plate 113 is parallel to the first partition plate 32 below, and the third partition plate 113 is integrally formed with the first socket plate 111. The third partition plate 113 is perpendicular to the first patch panel 111. The second coil mounting bracket 12 further includes a fourth dividing plate 123 also located on a side of the first dividing plate 32 away from the arc chute mounting area 4, and the fourth dividing plate 123 is integrally formed with the second insertion plate 121. The fourth dividing plate 123 is perpendicular to the second pin plate 121, and the fourth dividing plate 123 is also parallel to the first dividing plate 32 below.

As shown in fig. 3 and 4, two sets of terminal mounting areas 34 are integrally formed on the mounting plate 3, and the two sets of terminal mounting areas 34 are symmetrically disposed on two sides of the mounting plate 3 that are away from each other. Each group of the terminal mounting areas 34 is two in number, and the terminal mounting areas 34 located in the same group are respectively disposed on the front and rear sides of the mounting plate 3. The terminal mounting area 34 is used for mounting a terminal, and when an external circuit is connected, the external circuit and the terminal are connected, so that the external circuit and an internal electric element can be connected.

As shown in fig. 2 and 3, two sets of mounting lugs close to the mounting plate 3 are integrally formed on the outer side wall of the first housing 1, and the mounting lugs are symmetrically arranged on the front side and the rear side of the first housing 1. All link up on every group's installation ear and be provided with first catching groove 13, integrated into one piece has first fixture block 35 on the lateral wall that mounting panel 3 is close to adjacent first catching groove 13. When the first housing 1 and the second housing 2 are mutually covered, the first latch 35 is latched into the respective adjacent first latching groove 13. The same integrated into one piece has two sets of installation ears that are close to mounting panel 3 on the lateral wall of second shell 2, and this installation ear is the symmetry and sets up both sides around second shell 2. The mounting lug arranged on the second housing 2 is provided with a through second fastening groove 21, the side wall of the mounting plate 3 close to the adjacent second fastening groove 21 is integrally formed with a second clamping block 36, and when the first housing 1 and the second housing 2 are mutually covered, the second clamping block 36 is fastened into the respective adjacent second fastening groove 21.

The implementation principle of this application embodiment circuit breaker casing does:

being first coil mounting bracket 11 and the second coil mounting bracket 12 that sets up side by side, satisfied the demand that two sets of solenoid were installed simultaneously to a casing internal energy, make full use of the inner space of first shell 1 and second shell 2. The space utilization rate of the first shell 1 and the second shell 2 is improved, so that the internal space layout of the first shell 1 and the second shell 2 is more reasonable. And the mounting panel 3 is provided with a plurality of groups of bimetallic strip mounting areas 31 for mounting bimetallic strips, thereby ensuring that each group of external circuits can have independent overload protection. Finally, the effect of simultaneously carrying out short-circuit protection and overload protection on at least two groups of external circuits by adopting a single module shell is realized, and the layout in the shell is optimized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a circuit breaker casing, is including first shell (1) and second shell (2) that each other approximately, its characterized in that: the coil winding device is characterized by further comprising mounting plates (3) arranged in the first shell (1) and the second shell (2), wherein a first coil mounting frame (11) is arranged on the inner side wall of the first shell (1), a second coil mounting frame (12) is arranged on the inner side wall of the second shell (2), and the first coil mounting frame (11) and the second coil mounting frame (12) are arranged side by side; be provided with multiunit bimetallic strip installing zone (31) on mounting panel (3), bimetallic strip installing zone (31) set up respectively on the lateral wall that mounting panel (3) deviates from each other, and bimetallic strip installing zone (31) are respectively towards respective relative first shell (1) or second shell (2).

2. The circuit breaker housing of claim 1, wherein: still be provided with two sets of arc chute installing zones (4) on mounting panel (3), arc chute installing zone (4) are located adjacent bimetallic strip installing zone (31) one side separately respectively.

3. A circuit breaker housing according to claim 2 wherein: arc extinguishing bars installing zone (4) are close to second coil mounting bracket (12), be provided with first division board (32) that are located between arc extinguishing bars installing zone (4) and second coil mounting bracket (12) on mounting panel (3).

4. A circuit breaker housing according to claim 3, wherein: second partition plates (33) facing the mounting plate (3) are arranged on the inner side walls of the first shell (1) and the second shell (2), and the second partition plates (33) are located between the first partition plates (32) and the arc extinguishing grid mounting area (4); the second partition plate (33) and the first partition plate (32) are parallel to each other.

5. The circuit breaker housing of claim 1, wherein: the wiring terminal mounting areas (34) are arranged on the mounting plate (3), and the wiring terminal mounting areas (34) are symmetrically arranged on two sides of the mounting plate (3) which are deviated from each other; the number of the wiring terminal mounting areas (34) on the same side of the mounting plate (3) is at least two and the wiring terminal mounting areas are symmetrically arranged.

6. A circuit breaker housing according to claim 3 wherein: first coil mounting bracket (11) is including first plugboard (111) towards second coil mounting bracket (12), be provided with plug-in groove (112) of opening towards second coil mounting bracket (12) on first plugboard (111), second coil mounting bracket (12) is including second plugboard (121) towards first plugboard (111), be provided with plug-in block (122) towards plug-in groove (112) on second plugboard (121), plug-in block (122) and plug-in groove (112) are inserted each other and are closed.

7. The circuit breaker housing of claim 6, wherein: first coil mounting bracket (11) still including being located first division board (32) and deviating from third division board (113) of arc extinguishing bars installing zone (4) one side, second coil mounting bracket (12) still including being located first division board (32) and deviating from fourth division board (123) of arc extinguishing bars installing zone (4) one side equally.

8. The circuit breaker housing of claim 1, wherein: a first buckling groove (13) is formed in the outer side wall of the first shell (1), a first clamping block (35) is arranged on the side wall, close to the first buckling groove (13), of the mounting plate (3), and the first clamping block (35) is buckled into the first buckling groove (13); the outer side wall of the second shell (2) is provided with a second buckling groove (21), the side wall, close to the second buckling groove (21), of the mounting plate (3) is provided with a second clamping block (36), and the second clamping block (36) is buckled into the second buckling groove (21).