CN109686623B - Small-sized circuit breaker - Google Patents
Small-sized circuit breaker Download PDFInfo
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- CN109686623B CN109686623B CN201710970158.5A CN201710970158A CN109686623B CN 109686623 B CN109686623 B CN 109686623B CN 201710970158 A CN201710970158 A CN 201710970158A CN 109686623 B CN109686623 B CN 109686623B
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- access port
- leakage
- port
- conductive
- shell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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Abstract
The invention relates to a miniature circuit breaker, which comprises a shell, a power supply and a power supply, wherein an access port and an outgoing port are arranged on the shell; the operating mechanism assembly is arranged on the shell and used for controlling the access port to be electrically communicated with or disconnected from the leading-out port, the control panel is arranged in the shell, and the electric leakage detection unit and the electromagnetic system are connected with the control panel; the electric leakage detection unit comprises a leakage induction coil arranged in the shell and connected with the control panel, and at least two conductive bars penetrating through the leakage induction coil, wherein the two conductive bars are separated by an insulator and are respectively connected with two access ports arranged on the shell, and the two access ports are respectively used for connecting a live wire and electric equipment. The miniature circuit breaker of the invention integrates the functions of leakage detection, leakage protection and short-circuit protection, has small volume and is convenient to install and use.
Description
Technical Field
The invention relates to a circuit breaker technology, in particular to a small circuit breaker.
Background
The miniature circuit breaker is a circuit control switch widely used in various places such as industry, commerce, high-rise and civil residence, generally has strict restriction to the overall dimension of the miniature circuit breaker, and the realization of functions such as leakage detection, leakage protection and short-circuit protection all need to set up the coil, and the occupation volume is great, therefore, by the restriction of volume, the function of the existing miniature circuit breaker is limited, in order to realize functions such as leakage detection, leakage protection and short-circuit protection to the circuit, generally adopt the method of using a plurality of miniature relays in an integrated manner, in order to increase its function, so not only has increased the acquisition cost, but also it is inconvenient when using.
The invention is therefore set forth in this light.
Disclosure of Invention
It is an object of the present invention to overcome the disadvantages of the prior art and to provide a miniature circuit breaker with leakage detection, leakage protection and short circuit protection.
In order to realize the purpose, the invention adopts the following technical scheme:
a miniature circuit breaker comprises a circuit board, a first circuit board,
the shell is provided with an access port and an outlet port;
an operating mechanism assembly mounted on the housing for controlling the access port to be in electrical communication with the outlet port or to be out of electrical communication with the outlet port,
the control panel is arranged in the shell and also comprises,
electric leakage detecting element and electromagnetic system, electric leakage detecting element and electromagnetic system install in the casing to be connected with the control panel electricity.
Furthermore, the electromagnetic system is electrically communicated with the access port through the electric leakage detection unit and is controllably electrically communicated with the leading-out port through the operating mechanism assembly, and the electromagnetic system is used for driving the operating mechanism assembly to act so as to disconnect the electric communication between the access port and the leading-out port.
Further, the electric leakage detection unit comprises a leakage induction coil arranged in the shell and connected with the control panel, at least two conductive bars penetrating through the leakage induction coil, an insulator is used for separating the two conductive bars, and the two access ports are respectively and electrically communicated with the two conductive bars.
Further, the leakage detecting unit further includes a conductive member; at least one conductive bar is connected with the access port through a conductive component; preferably, the conductive assembly is further connected with a control board to supply power to the control board, and the control board is connected with the zero line through a lead.
Furthermore, the two conductive bars are respectively a first conductive bar and a second conductive bar; the two access ports are respectively a first access port used for being connected with a live wire and a second access port used for being connected with electric equipment; the first conducting bar penetrates through the interior of the leakage inductance coil, the upper end of the first conducting bar is connected with the first access port through the conducting assembly, the lower end of the first conducting bar is connected with the electromagnetic system, the second conducting bar is spaced from the first conducting bar at a certain distance and extends to be in contact with the second access port through the interior of the leakage inductance coil, and the second conducting bar is electrically communicated with a zero line.
Further, the operating mechanism assembly has a first actuating position for placing the first access port in electrical communication with the outlet port and a second actuating position for removing the first access port from electrical communication with the outlet port, and the electromagnetic system is configured to drive the operating mechanism assembly from the first actuating position to the second actuating position.
Furthermore, the electromagnetic system comprises an electric leakage protection coil, a short-circuit protection coil wound on the periphery of the electric leakage protection coil and an armature component movably arranged in the shell, wherein the armature component is driven to move by a magnetic field generated by either the electric leakage protection coil or the short-circuit protection coil, and drives the operating mechanism component to act when the armature component moves; one end of the short-circuit protection coil is connected with the first conductive bar, the other end of the short-circuit protection coil is connected with the operating mechanism assembly and the electric leakage protection coil respectively, and the other end of the electric leakage protection coil is connected with the control panel.
Further, the insulator is fixedly installed in the shell, a first fixing structure for fixing the first access port, a second fixing structure for fixing the second access port, a third fixing structure for fixing the second conducting bar and a fourth fixing structure for fixing the conducting assembly are formed on the insulator, and the conducting assembly is fixedly connected with the first conducting bar.
Furthermore, the first fixing structure and the second fixing structure are a pair of clamping seats arranged side by side, the first access port and the second access port are metal plug sockets and are correspondingly arranged in the clamping seats, the third fixing structure is a clamping groove matched with the second conductive bar, the second conductive bar is inserted into the clamping groove, the fourth fixing structure is a bayonet, and the conductive assembly penetrates through the bayonet and is connected with the first access port.
Further, the electric leakage detecting unit is close to and connects the port setting, electromagnetic system is located the electric leakage detecting unit and keeps away from one side of joining in marriage the port, and is located the well lower part in the casing, the operating device subassembly is located electromagnetic system's upper portion, the control panel is located electric leakage detecting unit's top one side.
After the technical scheme of the invention is adopted, the following beneficial effects are brought:
on the other hand, the short-circuit protection coil is wound on the periphery of the leakage protection coil, and the internal space of the circuit breaker is optimized, so that the functions of leakage detection, leakage protection, short-circuit protection and the like are integrated, the convenience of use is greatly improved, and the application range of the circuit breaker is improved.
Drawings
FIG. 1: the front view of the invention with part of the shell removed;
FIG. 2: is a partial view of fig. 1;
FIG. 3: the structure diagram of the leakage detection unit under one view angle;
FIG. 4: the structure diagram of the leakage detecting unit in another view angle;
FIG. 5: an explosion diagram of the leakage detection unit of the present invention;
FIG. 6: the circuit of the invention is connected with a schematic diagram;
wherein: 1. the electromagnetic switching device comprises a shell 2, an access port 3, an outlet port 4, an operating mechanism assembly 5, a control board 6, a leakage detection unit 7, an electromagnetic system 8, an arc extinguishing device 9, an insulator 10, an electric equipment 21, a first access port 22, a second access port 41, a movable contact 42, a fixed contact 43, a handle 44, a snap-action mechanism 61, a first conductive bar 62, a second conductive bar 63, a leakage induction coil 64, a conductive assembly 71, a leakage protection coil 72, a short-circuit protection coil 73, an armature assembly 91, a first fixing structure 92, a second fixing structure 93, a third fixing structure 94 and a fourth fixing structure.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, a small-sized circuit breaker includes a case 1, an operating mechanism assembly 4 mounted on the case 1, a control board 5 provided in the case 1, a leakage detecting unit 6 connected to the control board 5, and an electromagnetic system 7. Be equipped with on casing 1 and insert port 2 and draw out port 3, insert port 2 is two, is first insert port 21 and second insert port 22 respectively, first insert port 21 is used for being connected with the live wire to through operating device subassembly 4 controllable with draw out 3 electricity intercommunications of port, draw out port 3 and be used for being connected with consumer 10, with the leading-in consumer 10 of electric current on the live wire. The second access port 22 is used for being connected with the electric equipment 10 and is connected with a zero line through a lead, wherein the first access port 21, the leading-out port 3 and the second access port 22 are connected in series. The current on the live wire is connected into the circuit breaker from the first access port 21 and then is led out from the outlet port 3 to the electric equipment 10, and the electric equipment 10 is connected with the zero wire through the second access port 22.
Preferably, for the space in the rational utilization casing 1, two access ports 2 set up side by side, electric leakage detecting element 6 is close to and sets up in access port 2, electromagnetic system 7 is located electric leakage detecting element 6 and keeps away from one side of access port 2, and is located the well lower part in casing 1, operating device subassembly 4 is located electromagnetic system 7's upper portion, control panel 5 is located electric leakage detecting element 6's top one side.
The operating mechanism assembly 4 has a movable contact 41 and a fixed contact 42, the fixed contact 42 is fixedly arranged in the shell 1, the movable contact 41 is configured to move relative to the fixed contact 42, and at least has a first action position combined with the fixed contact 42 and a second action position separated from the fixed contact 42. The first access port 21 is in electrical communication with the outlet port 3 when the movable contact 41 is engaged with the stationary contact 42, and the first access port 21 is out of communication with the outlet port 3 when the movable contact 41 is disengaged from the stationary contact 42.
The leakage detection unit 6 comprises a leakage induction coil 63 arranged in the shell 1 and connected with the control board 5, at least two conductive bars penetrating through the leakage induction coil 63, and the two conductive bars are separated by an insulator 9 and are respectively and electrically communicated with the two access ports 2 arranged on the shell 1. Preferably, the conducting bar is a copper bar, and it should be particularly noted that the existing circuit breaker generally adopts a copper wire to pass through the leakage induction coil 63, and a plurality of soft copper wires need to be additionally welded in the arrangement mode.
Specifically, the two conductive bars are a first conductive bar 61 and a second conductive bar 62 respectively, the first conductive bar 61 penetrates through the leakage induction coil 63, the upper end of the first conductive bar is connected with the first access port 21 through a conductive assembly 64, the lower end of the first conductive bar is connected with the electromagnetic system 7, the second conductive bar 62 is spaced from the first conductive bar 61 by a certain distance and penetrates through the leakage induction coil 63 to be in contact with the second access port 22, and the second conductive bar 62 is electrically communicated with the zero line.
Preferably, the insulating body 9 is fixedly mounted in the housing 1 and has formed thereon a first fixing structure 91 for fixing the first access port 21, a second fixing structure 92 for fixing the second access port 22, a third fixing structure 93 for fixing the second conductive bar 62 and a fourth fixing structure 94 for fixing the conductive member 64, the conductive member 64 being fixedly connected to the first conductive bar 61.
Specifically, the first fixing structure 91 and the second fixing structure 92 are a pair of card seats arranged side by side, the first access port 21 and the second access port 22 are metal sockets and are correspondingly installed in the card seats, and the size of the card seats is enough to just accommodate the metal sockets and limit the metal sockets inside the metal sockets by matching with the housing 1. The third fixing structure 93 is a clamping groove matched with the second conductive bar 62, the upper end of the clamping groove extends to the inner side of the second fixing structure 92, so that the second conductive bar 62 can be inserted into the metal plug socket, the lower end of the clamping groove extends to the upper side of the leakage inductance induction coil 63, and the second conductive bar 62 is inserted into the clamping groove and extends along the clamping groove. The fourth fixing structure 94 is a bayonet, the conductive component 64 penetrates through the bayonet to be connected with the first access port 21, and a screw is arranged on the conductive component 64 to be tightly matched with the bayonet.
The electromagnetic system 7 includes a leakage protection coil 71, a short-circuit protection coil 72 wound around the leakage protection coil 71, and an armature assembly 73 movably disposed in the housing 1, wherein the armature assembly 73 is driven by a magnetic field generated by either the leakage protection coil 71 or the short-circuit protection coil 72 to move, and drives the operating mechanism assembly 4 to move when moving, so as to separate the movable contact 41 from the stationary contact 42. The short-circuit protection coil 72 is wound around the outer periphery of the leakage protection coil 71, and the occupied space can be reduced compared with the case where the short-circuit protection coil and the leakage protection coil are independently arranged.
One end of the short circuit protection coil 72 is connected with the lower end of the first conducting bar 61, the other end is respectively connected with the fixed contact 42 and the leakage protection coil 71, the other end of the leakage protection coil 71 is connected with the control board 5, the on-off of the leakage protection coil 71 is controlled by the control board 5, and the movable contact 41 is connected with the leading-out port 3.
The conductive assembly 64 is also connected with the control board 5 to supply power to the control board 5, and the control board 5 is also connected with a zero line through a lead.
Preferably, the miniature circuit breaker further comprises an arc extinguishing device 8 disposed between the stationary contact 42 and the outlet port 3; the operating mechanism assembly 4 further comprises a handle 43 and a kick mechanism 44 connected with the handle 43, the handle 43 drives the kick mechanism 44 to enable the movable contact 41 to be combined with the fixed contact 42, the kick mechanism 44 is also matched with the electromagnetic system 7, and the electromagnetic system 7 drives the kick mechanism 44 to enable the movable contact 41 to be separated from the fixed contact 42.
The working principle of the invention is as follows:
when the movable contact 41 is combined with the fixed contact 42, current is introduced into the circuit breaker through the first access port 21, and is divided into two branches in the circuit breaker, wherein one branch supplies power to the controller, and the other current is connected into the electric equipment 10 through the first conducting bar 61, the short-circuit protection coil 72, the fixed contact 42, the movable contact 41 and the leading-out port 3, and then is connected into a zero line from the electric equipment 10 through the second access port 22 and the second conducting bar 62. When the short circuit occurs, the current becomes large, accordingly, the short circuit protection coil 72 generates a strong magnetic field to attract the armature assembly 73 to act, and the moving contact 41 is triggered to be separated from the fixed contact 42 through the snap mechanism 44, so that the short circuit protection function is achieved. When the electric equipment 10 leaks electricity, the currents on the two conductive bars change, and a corresponding induced current is generated on the leakage induction coil 63, when the induced current exceeds a set value, the control board 5 controls the leakage protection coil 71 to be electrified and attracts the armature assembly 73 to act, and the over-snap mechanism 44 triggers the movable contact 41 to be separated from the fixed contact 42, so that the leakage protection function is realized.
The foregoing is directed to embodiments of the present invention, and it is understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (5)
1. A miniature circuit breaker comprises a circuit board, a first circuit board,
the shell (1) is provided with an access port (2) and an outgoing port (3);
an operating mechanism component (4) arranged on the shell (1), wherein the operating mechanism component (4) is used for controlling the electric communication or disconnection between the access port (2) and the lead-out port (3),
control panel (5) of setting in casing (1), its characterized in that: also comprises the following steps of (1) preparing,
the leakage detection device comprises a leakage detection unit (6) and an electromagnetic system (7), wherein the leakage detection unit (6) and the electromagnetic system (7) are installed in the shell (1) and are electrically connected with the control board (5);
the electromagnetic system (7) is electrically communicated with the access port (2) through the electric leakage detection unit (6) and is controllably electrically communicated with the lead-out port (3) through the operating mechanism assembly (4), and the electromagnetic system (7) is used for driving the operating mechanism assembly (4) to act so as to disconnect the electric communication between the access port (2) and the lead-out port (3);
the leakage detection unit (6) comprises two leakage induction coils (63) which are arranged in the shell (1) and connected with the control panel (5), and two conductive bars which penetrate through the leakage induction coils (63), wherein the two conductive bars are separated by an insulator (9), and the access ports (2) are respectively electrically communicated with the two conductive bars;
the two conductive rows are respectively a first conductive row (61) and a second conductive row (62); the two access ports (2) are respectively a first access port (21) used for being connected with a live wire and a second access port (22) used for being connected with electric equipment;
the electric leakage detection unit (6) further comprises a conductive component; the first conductive bar (61) is connected with the first access port (21) through a conductive component (64); the conducting component (64) is also connected with the control board (5) to supply power to the control board (5), and the control board (5) is connected with a zero line through a lead;
the insulator (9) is fixedly arranged in the shell (1), and is provided with a first fixing structure (91) for fixing the first access port (21), a second fixing structure (92) for fixing the second access port (22), a third fixing structure (93) for fixing the second conductive bar (62) and a fourth fixing structure (94) for fixing the conductive component (64), and the conductive component (64) is fixedly connected with the first conductive bar (61);
the first fixing structure (91) and the second fixing structure (92) are a pair of clamping seats arranged side by side, the first access port (21) and the second access port (22) are metal plug sockets and are correspondingly arranged in the clamping seats, the third fixing structure (93) is a clamping groove matched with the second conducting bar (62), the second conducting bar (62) is inserted into the clamping groove, the fourth fixing structure (94) is a bayonet, and the conducting component (64) penetrates through the bayonet to be connected with the first access port (21).
2. A miniature circuit breaker according to claim 1, wherein: the first conducting bar (61) penetrates through the interior of the leakage induction coil (63), the upper end of the first conducting bar is connected with the first access port (21) through a conducting assembly (64), the lower end of the first conducting bar is connected with the electromagnetic system (7), the second conducting bar (62) is spaced from the first conducting bar (61) at a certain distance and penetrates through the interior of the leakage induction coil (63) to be in contact with the second access port (22), and the second conducting bar (62) is electrically communicated with a zero line.
3. A miniature circuit breaker according to claim 2, wherein: the operating mechanism assembly (4) is provided with a first action position for enabling the first access port (21) to be electrically communicated with the leading-out port (3) and a second action position for disconnecting the first access port (21) from being electrically communicated with the leading-out port (3), and the electromagnetic system (7) is used for driving the operating mechanism assembly (4) to be switched from the first action position to the second action position.
4. A miniature circuit breaker according to claim 3, wherein: the electromagnetic system (7) comprises a leakage protection coil (71), a short-circuit protection coil (72) wound on the periphery of the leakage protection coil (71), and an armature component (73) movably arranged in the shell (1), wherein the armature component (73) is driven to move by a magnetic field generated by the leakage protection coil (71) or the short-circuit protection coil (72), and drives the operating mechanism component (4) to move when moving; one end of the short circuit protection coil (72) is connected with the first conducting bar (61), the other end of the short circuit protection coil is connected with one end of the operating mechanism assembly (4) and one end of the electric leakage protection coil (71), and the other end of the electric leakage protection coil (71) is connected with the control board (5).
5. A miniature circuit breaker according to claim 1, wherein: leakage detection unit (6) are close to and are connected in port (2) setting, electromagnetic system (7) are located leakage detection unit (6) and keep away from the one side of connecting in port (2), and are located the well lower part in casing (1), operating device subassembly (4) are located the upper portion of electromagnetic system (7), control panel (5) are located leakage detection unit's (6) top one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710970158.5A CN109686623B (en) | 2017-10-18 | 2017-10-18 | Small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710970158.5A CN109686623B (en) | 2017-10-18 | 2017-10-18 | Small-sized circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN109686623A CN109686623A (en) | 2019-04-26 |
| CN109686623B true CN109686623B (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710970158.5A Active CN109686623B (en) | 2017-10-18 | 2017-10-18 | Small-sized circuit breaker |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002329450A (en) * | 2001-04-27 | 2002-11-15 | Matsushita Electric Works Ltd | Earth leakage breaker |
| CN201369306Y (en) * | 2009-03-05 | 2009-12-23 | 漳州马可电器科技有限公司 | Breaker leakage protection and short circuit protection structure |
| CN102136401A (en) * | 2011-03-24 | 2011-07-27 | 浙江天正电气股份有限公司 | Miniature circuit breaker with leakage protection function |
| CN102290292A (en) * | 2011-06-28 | 2011-12-21 | 常熟开关制造有限公司(原常熟开关厂） | Aftercurrent protection circuit breaker |
| CN205789777U (en) * | 2016-06-01 | 2016-12-07 | 温州创伟永吉电气有限公司 | New pattern creepage breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3438425B2 (en) * | 1995-08-22 | 2003-08-18 | 富士電機株式会社 | Earth leakage trip device for earth leakage breaker |
-
2017
- 2017-10-18 CN CN201710970158.5A patent/CN109686623B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002329450A (en) * | 2001-04-27 | 2002-11-15 | Matsushita Electric Works Ltd | Earth leakage breaker |
| CN201369306Y (en) * | 2009-03-05 | 2009-12-23 | 漳州马可电器科技有限公司 | Breaker leakage protection and short circuit protection structure |
| CN102136401A (en) * | 2011-03-24 | 2011-07-27 | 浙江天正电气股份有限公司 | Miniature circuit breaker with leakage protection function |
| CN102290292A (en) * | 2011-06-28 | 2011-12-21 | 常熟开关制造有限公司(原常熟开关厂） | Aftercurrent protection circuit breaker |
| CN205789777U (en) * | 2016-06-01 | 2016-12-07 | 温州创伟永吉电气有限公司 | New pattern creepage breaker |
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| CN109686623A (en) | 2019-04-26 |
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