CN213691917U

CN213691917U - Small-sized circuit breaker

Info

Publication number: CN213691917U
Application number: CN202023090588.4U
Authority: CN
Inventors: 陈延贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-07-13
Anticipated expiration: 2030-12-21

Abstract

A miniature circuit breaker. The problem of current miniature circuit breaker control module too big, and do not have display module is solved. It includes the circuit breaker unit, the circuit breaker unit on be equipped with control unit and protection unit, the control unit locate the side of circuit breaker unit, the circuit breaker unit include inlet wire end and leading-out terminal, the protection unit locate the below of circuit breaker unit leading-out terminal, the control unit include control housing, control housing in be equipped with main control circuit board, display circuit board, control housing on be equipped with the display screen, main control circuit board be connected with the display screen through display circuit board. The beneficial effects of the utility model are that, be equipped with the side and the below of circuit breaker unit respectively with the control unit and the protection unit to make the control unit can not occupy too big space when the circuit breaker concatenation, add the display screen moreover, can show the information that needs, convenient to use knows the working condition of circuit breaker.

Description

Small-sized circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus, concretely relates to miniature circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening a current under a normal circuit condition and closing, carrying, and opening a current under an abnormal circuit condition within a prescribed time, and is classified into a high-voltage circuit breaker and a low-voltage circuit breaker according to its use range, and the low-voltage circuit breaker includes a miniature circuit breaker. The Miniature Circuit Breaker (English name: Miniature Circuit Breaker) is also called as Micro Circuit Breaker, can be used for overload and short Circuit protection of illumination, distribution lines and equipment of office buildings, houses and similar buildings, can also be used for infrequent on-off operation and conversion of lines, and is mainly used in various places such as industrial, commercial, high-rise and civil houses. Along with the popularization of intellectualization, an intelligent module is also commonly arranged on the existing miniature circuit breaker and generally comprises a current transformer, a control circuit board and a release, wherein the current transformer is electrically connected with the control circuit board, the control circuit board is connected with the release and controls the release to act, and the release is connected with the miniature circuit breaker to control the opening of the miniature circuit breaker. The circuit breaker side is all located to spare parts such as current transformer of current intelligent control module, because spare part is more, and the overall arrangement is unreasonable for intelligent control module whole volume is great (mainly indicate thickness to exceed 18 mm), causes the product to occupy the space in the circuit breaker switch box, does not set up display module on the control module who has now moreover, makes the staff can not accurately know the situation of circuit breaker.

SUMMERY OF THE UTILITY MODEL

For solving current miniature circuit breaker control module among the background art too big, and do not have display module's problem, the utility model provides a miniature circuit breaker.

The technical scheme of the utility model is that: the utility model provides a miniature circuit breaker, includes the circuit breaker unit, the circuit breaker unit on be equipped with the control unit and protect the unit, the control unit locate the side of circuit breaker unit, the circuit breaker unit include inlet wire end and leading-out terminal, the below of circuit breaker unit leading-out terminal is located to the protect unit, the control unit include control housing, control housing in be equipped with main control circuit board, display circuit board, control housing on be equipped with the display screen, main control circuit board be connected with the display screen through display circuit board.

As an improvement of the utility model, control housing in be equipped with first holding chamber and second holding chamber, main control circuit board locate first holding intracavity, second holding intracavity be equipped with the dropout unit of being connected with main control circuit board electricity, display circuit board locate the top of dropout unit.

As a further improvement, the control housing is provided with a first slot above the second accommodating cavity, the display circuit board is inserted into the first slot, and the display screen is arranged above the display circuit board.

As a further improvement, the control shell on be equipped with and set up button and data plate, the setting button locate display circuit board's top and be connected with display circuit board.

As a further improvement, the display screen, set up button, data plate locate on the upper surface of control housing, the data plate adopt PVC material integrated into one piece.

As a further improvement, the control housing described above is provided with a test button, the control housing in which a third holding cavity is provided, the third holding cavity in which a first connecting plate and a second connecting plate are respectively connected with the main control circuit board are provided, the test button has a first position inserted into the third holding cavity and a second position pressed to connect the first connecting plate and the second connecting plate.

As a further improvement, the third accommodating chamber is provided with a side edge for locating the second accommodating chamber, and the third accommodating chamber is provided with a second slot for inserting the first connecting plate and the second connecting plate.

As a further improvement of the present invention, the circuit breaker units are at least two, the control unit locates the outermost side of the different circuit breaker units, the thickness of the control housing not more than the thickness of a single circuit breaker unit.

As a further improvement of the utility model, the protection unit include the protection casing, the protective housing in be equipped with current transformer and zero sequence transformer, current transformer's quantity the same with the quantity of circuit breaker unit, current transformer, zero sequence transformer be connected with main control circuit board respectively.

As a further improvement, the protection casing on be equipped with the connecting pipe, the first holding intracavity of connecting pipe insertion control casing, first holding chamber be equipped with all around with the fixed block that main control circuit board offseted.

As a further improvement of the utility model, the protection shell is connected with the control unit and the protection unit through the pins.

As a further improvement, the protection casing include first casing and second casing, the second casing on be equipped with and participate in the jack of looks adaptation, the second casing on be equipped with the direction muscle on participating in the direction.

As a further improvement of the present invention, the first housing is connected to the second housing, and the first housing is connected to the control unit and/or the protection unit via a bolt.

The beneficial effects of the utility model are that, be equipped with the side and the below of circuit breaker unit respectively with the control unit and the protection unit to make the control unit can not occupy too big space when the circuit breaker concatenation, add the display screen moreover, can show the information that needs, convenient to use knows the working condition of circuit breaker. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Fig. 3 is a schematic diagram of an exploded structure at the control unit 2 of fig. 1.

Fig. 4 is an exploded view of the protection unit 3 of fig. 1.

Fig. 5 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.

In the figure, 1, a circuit breaker unit; 11. a wire inlet end; 12. a wire outlet end; 2. a control unit; 21. a control housing; 211. a first accommodating cavity; 212. a second accommodating cavity; 213. a first slot; 214. a third accommodating cavity; 215. a first connecting plate; 216. a second connecting plate; 217. a second slot; 218. a fixed block; 22. a main control circuit board; 23. a display circuit board; 24. a display screen; 25. a trip unit; 26. setting a button; 27. a nameplate; 28. a test button; 3. a protection unit; 31. a protective housing; 311. a first housing; 312. a second housing; 313. a jack; 314. a guide rib; 32. a current transformer; 33. a zero sequence transformer; 34. a connecting pipe; 4. and (7) a pin.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 in conjunction with fig. 2 to 6, a small-sized circuit breaker includes a circuit breaker unit 1, the circuit breaker unit 1 is provided with a control unit 2 and a protection unit 3, the control unit 2 is arranged on the side surface of the circuit breaker unit 1 (refer to figure 1), the breaker unit 1 comprises a wire inlet end 11 and a wire outlet end 12, the protection unit 3 is arranged below the wire outlet end 12 of the breaker unit 1 (refer to figure 1), the control unit 2 includes a control casing 21 (the control casing only means that the component is a casing of the control unit, and does not mean that the component has a control function, and the same is true for a lower protection casing), a main control circuit board 22 and a display circuit board 23 are arranged in the control casing 21, the control shell 21 is provided with a display screen 24, and the main control circuit board 22 is connected with the display screen 24 through a display circuit board 23. The beneficial effects of the utility model are that, be equipped with the side and the below of circuit breaker unit respectively with the control unit and the protection unit to make the control unit can not occupy too big space when the circuit breaker concatenation, add the display screen moreover, can show the information that needs. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life. More specifically, a user can set related parameters according to field use requirements through functions, the protection unit transmits the control unit after sampling data, and a main control circuit board of the control unit sends an instruction to the tripping unit after operation processing so as to achieve accurate control, so that the safety operation of the equipment is protected, and meanwhile, the control unit can also display real-time operation parameters and fault problem query. The following can be realized: phase sequence, phase loss, short circuit, overload, leakage, rotation blockage, overvoltage/undervoltage, countdown, temperature and other protection functions.

The control housing 21 is internally provided with a first accommodating cavity 211 and a second accommodating cavity 212, the main control circuit board 22 is arranged in the first accommodating cavity 211, the second accommodating cavity 212 is internally provided with a tripping unit 25 electrically connected with the main control circuit board 22, and the display circuit board 23 is arranged above the tripping unit 25 (see fig. 3). The top of main control circuit board is located to the dropout unit, avoids the last part of main control circuit board, and the space in the rational utilization control casing of being convenient for avoids increasing the thickness of control unit for the thickness of control unit matches with the thickness of a circuit breaker unit, the assembly of being convenient for.

The control housing 21 is provided with a first slot 213 above the second receiving cavity 212 (see fig. 3), the display circuit board 23 is inserted into the first slot 213, and the display screen 24 is provided above the display circuit board 23 (see fig. 3). The structure is convenient for the display circuit board to output display signals and display on the display screen. The first slot is convenient for mounting and limiting the display circuit board, and meanwhile, the control shell is limited, so that the structure is simple, the assembly is convenient and reliable, and the maintenance is convenient.

The control housing 21 is provided with a setting button 26 and a nameplate 27, and the setting button 26 is arranged above the display circuit board 23 (see fig. 3) and connected with the display circuit board 23. Specifically, the display screen 24, the setting button 26, and the name plate 27 are disposed on the upper surface of the control housing 21, and the name plate 27 is integrally formed of PVC (Polyvinyl chloride). Of course, in practice, the display screen, the setting button and the nameplate can be arranged into an integrated structure. The setting button can display required information such as temperature, time and the like by setting.

The control shell 21 is provided with a test button 28, a third accommodating cavity 214 is arranged in the control shell 21, a first connecting plate 215 and a second connecting plate 216 which are respectively connected with the main control circuit board 22 are arranged in the third accommodating cavity 214, and the test button 28 is provided with a first position inserted into the third accommodating cavity 214 and a second position which enables the first connecting plate 215 and the second connecting plate 216 to be connected by pressing. Specifically, the third receiving cavity 214 is provided with a side edge (see fig. 2) disposed at the second receiving cavity 212, and the third receiving cavity 214 is provided with a second slot 217 for inserting the first connecting plate 215 and the second connecting plate 216. The second slot can be convenient for the installation of first connecting plate and second connecting plate, and the test button of being convenient for communicates when pressing, test control unit's performance.

The circuit breaker unit 1 be two at least, control unit 2 locate the outside of different circuit breaker units 1, the thickness of control housing 21 be not more than single circuit breaker unit 1's thickness. The structure facilitates the product to be arranged in the distribution box, reduces the thickness of the control unit, ensures wide adaptation range of the product, ensures that the thickness of the control unit is about 18mm, namely, the thickness of the control unit is the same as that of a breaker unit, and has simple structure and convenient and reliable assembly.

The protection unit 3 include protection casing 31, protection casing 31 in be equipped with current transformer 32 and zero sequence transformer 33, current transformer 32 quantity the same with circuit breaker unit 1's quantity, current transformer 32, zero sequence transformer 33 be connected with main control circuit board 22 respectively. The structure not only can play a role in leakage protection, but also can be used for measurement, metering and the like, and is convenient to control by a control unit.

The protective shell 31 is provided with a connecting pipe 34, the connecting pipe 34 is inserted into the first accommodating cavity 211 of the control shell 21, and the periphery of the first accommodating cavity 211 is provided with fixing blocks 218 abutting against the main control circuit board 22. The structure is convenient for the lead in the protective shell to enter the first containing cavity to be connected with the main control circuit board, and the product is convenient to be reliably connected.

The protection shell 31 is connected with the control unit 2 and the protection unit 3 through pins 4. Specifically, the protective casing 31 includes a first casing 311 and a second casing 312, the second casing 312 is provided with a socket 313 adapted to the pin 4, and the second casing 312 is provided with a guiding rib 314 facing the pin 4. The setting of direction muscle is convenient for participate in the motion direction, is convenient for including the installation of casing fixed.

The first housing 311 is clamped with the second housing 312, and the first housing 311 is connected with the control unit 2 and/or the protection unit 3 through bolts. The structure ensures that the first shell and the second shell are convenient and reliable to mount and fix.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. The utility model provides a miniature circuit breaker, includes circuit breaker unit (1), its characterized in that circuit breaker unit (1) on be equipped with control unit (2) and protection unit (3), control unit (2) locate the side of circuit breaker unit (1), circuit breaker unit (1) including inlet wire end (11) and leading-out terminal (12), protection unit (3) locate the below of circuit breaker unit (1) leading-out terminal (12), control unit (2) including control housing (21), control housing (21) in be equipped with main control circuit board (22), display circuit board (23), control housing (21) on be equipped with display screen (24), main control circuit board (22) be connected with display screen (24) through display circuit board (23).

2. The miniature circuit breaker according to claim 1, wherein said control housing (21) has a first receiving chamber (211) and a second receiving chamber (212), said main control circuit board (22) is disposed in the first receiving chamber (211), said second receiving chamber (212) has a trip unit (25) electrically connected to the main control circuit board (22), and said display circuit board (23) is disposed above the trip unit (25).

3. A miniature circuit breaker according to claim 2, wherein said control housing (21) is provided with a first insertion slot (213) above said second receiving chamber (212), said display circuit board (23) is inserted into said first insertion slot (213), and said display screen (24) is provided above said display circuit board (23).

4. A miniature circuit breaker according to claim 3, wherein said control housing (21) is provided with a setting button (26) and a name plate (27), said setting button (26) being disposed above said display circuit board (23) and connected to said display circuit board (23).

5. A miniature circuit breaker according to claim 4 wherein said display screen (24), said setting button (26) and said name plate (27) are disposed on the upper surface of said control housing (21), said name plate (27) being integrally formed of PVC.

6. A miniature circuit breaker according to claim 1, wherein said circuit breaker units (1) are at least two, said control units (2) are disposed at outermost sides of different circuit breaker units (1), and said control housing (21) has a thickness not greater than a thickness of a single circuit breaker unit (1).

7. A miniature circuit breaker according to claim 2, characterized in that said protection unit (3) comprises a protection housing (31), said protection housing (31) being provided with current transformers (32) and zero sequence transformers (33), said current transformers (32) being in the same number as the breaker units (1), said current transformers (32) and zero sequence transformers (33) being connected to the main control circuit board (22), respectively.

8. The miniature circuit breaker according to claim 7, wherein the protective housing (31) is provided with a connecting tube (34), the connecting tube (34) is inserted into the first receiving cavity (211) of the control housing (21), and the periphery of the first receiving cavity (211) is provided with a fixing block (218) abutting against the main control circuit board (22).

9. A miniature circuit breaker according to claim 7, characterized in that said protective housing (31) is connected to said control unit (2) and said protection unit (3) by means of pins (4).

10. A miniature circuit breaker as claimed in claim 9, wherein said protective housing (31) comprises a first housing (311) and a second housing (312), said second housing (312) having insertion holes (313) adapted to said pins (4), said second housing (312) having guiding ribs (314) extending in a direction toward said pins (4).