CN110444453A - A plug-in miniature circuit breaker - Google Patents

Abstract

The invention provides a plug-in miniature circuit breaker, which comprises a module head and a base, wherein the module head is connected with the base through a connecting rod; the module head comprises a first shell, a handle, a breaking connecting rod mechanism, a thermal-magnetic release, a breaking contact and an arc extinguishing grid; the base comprises a second shell, a wire inlet end and a wire outlet end; the module head is also provided with a first connector and a second connector; the module head is connected with the base in an inserting manner through a first connector and a second connector; the device also comprises a current detection device and an electromagnetic driving mechanism; the circuit board is provided with a microprocessor and at least one third plug connector connected with the microprocessor; the circuit board is in plug connection with the current detection device and the electromagnetic driving mechanism through a third plug connector; the invention can improve the protection precision of the miniature circuit breaker and realize intelligent control; meanwhile, the quick plugging can be realized, the working efficiency is improved, and the continuity of power supply is improved; and centralized management and control of a plurality of miniature circuit breakers can be realized, and the management efficiency is improved.

Description

A plug-in miniature circuit breaker

technical field

The invention belongs to the technical field of circuit breakers, and in particular relates to a plug-in miniature circuit breaker.

Background technique

Miniature circuit breakers refer to low-voltage circuit breakers used on AC 50/60Hz rated voltage 230/400V and rated current below 63A. They are often used in industrial, commercial, high-rise and residential buildings. In the prior art, miniature circuit breakers usually use thermal-magnetic releases to achieve short-circuit or overload protection. However, due to the differences in physical characteristics of thermal-magnetic releases, there are also problems of high discreteness and poor protection accuracy. There are still potential safety hazards and incomplete protection for the protection of the power distribution system by the miniature circuit breaker; and the traditional miniature circuit breaker usually adopts the standard rail installation method, the bottom of the miniature circuit breaker is snapped on the snap gauge, and then connected Connect the incoming and outgoing wires with screws. However, when a miniature circuit breaker breaks down and needs to be repaired or replaced, it needs to be completely dismantled, resulting in inconvenient maintenance and replacement, low work efficiency, and affecting the continuity of power supply; However, for a large number of installed miniature circuit breakers, there is a problem of messy management and inconvenient centralized management. In view of the above problems, the present invention discloses a plug-in miniature circuit breaker to solve the above problems.

Contents of the invention

The purpose of the present invention is to overcome the defects in the prior art and provide a plug-in miniature circuit breaker, which can solve the problems of poor protection precision, potential safety hazards and incomplete protection in the prior art on the one hand. , improve protection accuracy and realize intelligent control; on the other hand, it can realize quick plug-in and unplug, facilitate maintenance or replacement, improve work efficiency, and improve power supply continuity; in addition, it can also realize centralized management and control of several miniature circuit breakers, improving management Efficiency, convenient for designers to design combinations of miniature circuit breakers of different specifications.

In order to achieve the above object, the embodiment of the present invention provides a plug-in miniature circuit breaker, including a module head and a base; contacts and arc chute; the base includes a second housing, at least one incoming wire end and at least one outgoing wire end; the modular head is also provided with at least one first connector and at least one second connector; the The module head is plugged and connected to the base through the first connector and the second connector; it also includes a current detection device and an electromagnetic drive mechanism; the electromagnetic drive mechanism is connected to the breaking link mechanism and/or the breaking Contact drive connection; also includes a circuit board, the circuit board is provided with a microprocessor and at least one third socket connected to the microprocessor; the circuit board is connected to the circuit board through the third socket The current detection device is plugged and connected to the electromagnetic drive mechanism; optionally, the third connector may also include at least two connectors, one of which is plugged and connected to the current detection device, and the other connector is plugged and connected to the current detection device. It is plugged and connected with the electromagnetic drive mechanism; through the circuit board, the microprocessor analyzes and processes the current signal in the plug-in miniature circuit breaker line collected by the current detection device in real time, and then outputs the breaking or closing signal to the An electromagnetic drive mechanism, so that the breaking link mechanism and/or the breaking contact action is controlled by the electromagnetic drive mechanism, so as to realize the intelligent opening and closing of the plug-in miniature circuit breaker and improve the protection of the plug-in miniature circuit breaker. Comprehensiveness and precision of protection.

Optionally, the current detection device is arranged on the module head or the base; the electromagnetic driving mechanism is arranged on the module head or the base.

Optionally, the current detecting device may be a current transformer, the electromagnetic driving mechanism may be an electromagnet, and the connector may be a plug, a socket, a screw, or a crimping frame.

Optionally, the first shell of the modular head is partially plugged into the second shell of the base; or the first shell of the modular head is completely plugged into the second shell of the base .

Further, the third connector is connected with at least one set of current detection devices and an electromagnetic drive mechanism, which can be connected to several plug-in miniature circuit breaker bases and module heads, so that the concentration of several miniature circuit breakers can be realized. Management and control, improve management efficiency, and facilitate the combination design of different specifications of miniature circuit breakers for designers.

Further, the circuit board is also provided with a signal terminal, and the signal terminal is connected to the microprocessor through the circuit board, and is used for communicating with external devices.

Further, the circuit board is also provided with a power terminal connected to the circuit board for supplying power to at least one of the circuit board and the electromagnetic drive mechanism.

Further, the first connector and the second connector are respectively arranged on two sides of the module head.

Further, the first connector and the second connector are arranged on the same side of the module head.

Further, the first connector is electrically connected to the incoming wire end or the outgoing wire end.

Further, the second connector is electrically connected to the incoming wire end or the outgoing wire end.

Further, the breaking contacts include moving contacts and static contacts.

Further, it also includes a fixed plate, the circuit board is arranged on the fixed plate, and the fixed plate is provided with at least one plug-in miniature circuit breaker described above, corresponding to which several plug-in miniature circuit breaker bases and modules can be connected head, which can realize the centralized management and control of several miniature circuit breakers, improve management efficiency, and facilitate the combination design of different specifications of miniature circuit breakers for designers.

Optionally, the fixing plate may be an iron plate.

The beneficial effects of the plug-in miniature circuit breaker provided by the present invention are: on the one hand, it can solve the problems of poor protection precision, potential safety hazards and incomplete protection in the miniature circuit breaker in the prior art, and improve the plug-in miniature circuit breaker. protection accuracy and realize the intelligent control of plug-in miniature circuit breakers; on the other hand, by designing the structure of the module head and the base, the rapid plug-in and removal of the module head and the base can be realized, which solves the problem of maintenance or maintenance of miniature circuit breakers in the prior art. Replacing inappropriate problems can significantly improve the working efficiency of staff and improve the continuity of power supply; in addition, it can also realize the centralized management and control of several miniature circuit breakers, improve management efficiency, and facilitate the combination of designers with different specifications of miniature circuit breakers design.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a plug-in miniature circuit breaker provided by Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of the plug-in miniature circuit breaker provided by the second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the plug-in miniature circuit breaker provided by the third embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a plug-in miniature circuit breaker provided by Embodiment 4 of the present invention.

Fig. 5 is a schematic structural diagram of the plug-in miniature circuit breaker provided by Embodiment 5 of the present invention.

Fig. 6 is a schematic structural diagram of the plug-in miniature circuit breaker provided by the sixth embodiment of the present invention.

Explanation of reference numbers:

1. Module head; 101. First housing; 102. Handle; 103. Breaking link mechanism; 104. Thermal magnetic release; 105. Breaking contact; 106. Arc chute; 107. First connector; 108. Second connector; 2. Base; 201. Second housing; 202. Incoming wire end; 203. Outgoing wire end; 204. Current detection device; 205. Electromagnetic drive mechanism; 3. Circuit board; 301. Microprocessing 302, the third connector; 303, the signal terminal; 304, the power terminal; 4, the fixed plate.

Detailed ways

The plug-in miniature circuit breaker of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

FIG. 1 shows a schematic structural diagram of the plug-in miniature circuit breaker of the first embodiment. As shown in Figure 1, the plug-in miniature circuit breaker of the preferred embodiment 1 of the present invention includes a modular head 1 and a base 2; the modular head 1 includes a first housing 101, a handle 102, and a disconnecting link Mechanism 103, thermal magnetic release 104, breaking contacts 105 and arc chute 106; the base 2 includes a second housing 201 and at least one incoming wire end 202 and at least one outgoing wire end 203; the modular head 1 also At least one first connector 107 and at least one second connector 108 are provided; the modular head 1 is plugged and connected to the base 2 through the first connector 107 and the second connector 108; it also includes a current detection The device 204 and the electromagnetic driving mechanism 205; the electromagnetic driving mechanism 205 is drivingly connected with the breaking link mechanism 103 and/or the breaking contact 105; it also includes a circuit board 3, and the circuit board 3 is provided with a microprocessor 301 and at least one third connector 302 connected to the microprocessor 301; the circuit board 3 is plugged and connected to the current detection device 204 and the electromagnetic drive mechanism 205 through the third connector 302 ; Optionally, the third connector may also include at least two connectors, one of which is plugged and connected to the current detection device, and the other connector is plugged and connected to the electromagnetic drive mechanism; The microprocessor on the board analyzes and processes the current signal in the line of the plug-in miniature circuit breaker collected by the current detection device in real time, and then outputs the breaking or closing signal to the electromagnetic drive mechanism, so as to be controlled by the electromagnetic drive mechanism The opening and closing of the link mechanism and/or the breaking contact realizes the intelligent opening and closing of the plug-in miniature circuit breaker, and improves the protection comprehensiveness and protection accuracy of the plug-in miniature circuit breaker. For example, the microprocessor in the circuit board can determine the power distribution abnormalities such as short-circuit current, overload current, leakage current, and three-phase unbalanced current by comparing with the rated current and other rated values according to the current signal, so as to control the electromagnetic current in real time. The driving mechanism 205 controls the opening or closing action of the breaking link mechanism 103 and/or the breaking contact 105, and cuts off the power distribution line quickly and accurately, thereby realizing short-circuit protection, overload protection, leakage protection, three-phase unbalanced current, etc. Precise protection for power distribution abnormalities improves the comprehensiveness and precision of power distribution protection of plug-in miniature circuit breakers, and realizes intelligent control.

Optionally, the current detection device 204 is arranged on the module head 1 or the base 2; the electromagnetic drive mechanism 205 is arranged on the module head 1 or the base 2; in this embodiment, the current detection device 204 and The electromagnetic driving mechanism 205 is disposed on the module head 1 .

Optionally, the current detection device 204 can be a current transformer, the electromagnetic drive mechanism 205 can be an electromagnet, the microprocessor can be an MC68HC908AP32 chip, the circuit board can be a PCB board, and the connector It can be a plug, socket, screw, or crimping frame.

Optionally, the first housing part of the modular head in this embodiment is plugged into the second housing part of the base 2 .

Further, the third plug connector 302 is connected with at least one set of current detection device 204 and electromagnetic drive mechanism 205, which can be connected to several plug-in miniature circuit breaker bases and module heads, so that several miniature circuit breakers can be realized. Centralized management and control of breakers improves management efficiency and facilitates the combination design of miniature circuit breakers of different specifications.

Further, the circuit board 3 is also provided with a signal terminal 303, and the signal terminal 303 is connected to the microprocessor 301 through the circuit board, and is used for communicating with external devices.

Further, the circuit board 3 is also provided with a power terminal 304 connected to the circuit board 3 for supplying power to at least one of the circuit board and the electromagnetic drive mechanism.

Further, the first connector 107 and the second connector 108 are respectively arranged on two sides of the module head 1 .

Further, the first connector 107 and the second connector 108 are arranged on the same side of the modular head 1 .

Further, the first connector 107 is electrically connected to the incoming wire end 202 or the outgoing wire end 203 .

Further, the second connector 108 is electrically connected to the incoming wire end 202 or the outgoing wire end 203 .

Further, the breaking contact 104 includes a moving contact and a static contact.

Further, it also includes a fixed plate 4, the circuit board 3 is arranged on the fixed plate 4, and the fixed plate 4 is provided with at least one aforementioned plug-in miniature circuit breaker, corresponding to which several plug-in miniature circuit breakers can be connected The device base and module head can realize the centralized management and control of several miniature circuit breakers, improve management efficiency, and facilitate the combination design of different specifications of miniature circuit breakers for designers.

Optionally, the fixing plate may be an iron plate.

Embodiment two

FIG. 2 shows a schematic structural diagram of the plug-in miniature circuit breaker of the second embodiment. As shown in FIG. 2 , in the plug-in miniature circuit breaker of the second preferred embodiment of the present invention, the same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals. Only the differences will be described below. In this embodiment, the current detection device 204 and the electromagnetic driving mechanism 205 are arranged on the base 2 .

Embodiment Three

FIG. 3 shows a schematic structural diagram of the plug-in miniature circuit breaker of the third embodiment. As shown in FIG. 3 , in the plug-in miniature circuit breaker of the third preferred embodiment of the present invention, the same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals. Only the differences will be described below. In this embodiment, the current detection device 204 is set on the base 2 , and the electromagnetic driving mechanism 205 is set on the module head 1 .

Embodiment Four

FIG. 4 shows a schematic structural diagram of the plug-in miniature circuit breaker of the fourth embodiment. As shown in Figure 4, the plug-in miniature circuit breaker of the preferred embodiment 4 of the present invention includes a modular head 1 and a base 2; the modular head 1 includes a first housing 101, a handle 102, and a disconnecting link Mechanism 103, thermal magnetic release 104, breaking contacts 105 and arc chute 106; the base 2 includes a second housing 201, at least one incoming line end 202 and at least one outgoing line end 203; the modular head 1 also At least one first connector 107 and at least one second connector 108 are provided; the modular head 1 is plugged and connected to the base 2 through the first connector 107 and the second connector 108; it also includes a current detection The device 204 and the electromagnetic driving mechanism 205; the electromagnetic driving mechanism 205 is drivingly connected with the breaking link mechanism 103 and/or the breaking contact 105; it also includes a circuit board 3, and the circuit board 3 is provided with a microprocessor 301 and at least one third connector 302 connected to the microprocessor 301; the circuit board 3 is plugged and connected to the current detection device 204 and the electromagnetic drive mechanism 205 through the third connector 302 ; Optionally, the third connector may also include at least two connectors, one of which is plugged and connected to the current detection device, and the other connector is plugged and connected to the electromagnetic drive mechanism; The microprocessor on the board analyzes and processes the current signal in the line of the plug-in miniature circuit breaker collected by the current detection device in real time, and then outputs the breaking or closing signal to the electromagnetic drive mechanism, so as to be controlled by the electromagnetic drive mechanism The opening and closing of the link mechanism and/or the breaking contact realizes the intelligent opening and closing of the plug-in miniature circuit breaker, and improves the protection comprehensiveness and protection accuracy of the plug-in miniature circuit breaker. For example, the microprocessor in the circuit board can determine the power distribution abnormalities such as short-circuit current, overload current, leakage current, and three-phase unbalanced current by comparing with the rated current and other rated values according to the current signal, so as to control the electromagnetic current in real time. The driving mechanism 205 controls the opening or closing action of the breaking link mechanism 103 and/or the breaking contact 105, and cuts off the power distribution line quickly and accurately, thereby realizing short-circuit protection, overload protection, leakage protection, three-phase unbalanced current, etc. Precise protection for power distribution abnormalities improves the comprehensiveness and precision of power distribution protection of plug-in miniature circuit breakers, and realizes intelligent control.

Optionally, the current detection device 204 is arranged on the module head 1 or the base 2; the electromagnetic drive mechanism 205 is arranged on the module head 1 or the base 2; in this embodiment, the current detection device 204 and The electromagnetic driving mechanism 205 is disposed on the base 2 .

Optionally, the current detection device 204 can be a current transformer, the electromagnetic drive mechanism 205 can be an electromagnet, the microprocessor can be an MC68HC908AP32 chip, the circuit board can be a PCB board, and the connector can be It is a plug, a socket, a screw, or a crimping frame. Optionally, all the first shells of the module head in the second embodiment are plugged into the second shells of the base.

Further, the third plug connector 302 is connected with at least one set of current detection device 204 and electromagnetic drive mechanism 205, which can be connected to several plug-in miniature circuit breaker bases and module heads, so that several miniature circuit breakers can be realized. Centralized management and control of breakers improves management efficiency and facilitates the combination design of miniature circuit breakers of different specifications.

Further, the circuit board 3 is also provided with a signal terminal 303, and the signal terminal 303 is connected to the microprocessor 301 through the circuit board, and is used for communicating with external devices.

Further, the circuit board 3 is also provided with a power terminal 304 connected to the circuit board 3 for supplying power to at least one of the circuit board and the electromagnetic drive mechanism.

Further, the first connector 107 and the second connector 108 are respectively arranged on two sides of the module head 1 .

Further, the first connector 107 and the second connector 108 are arranged on the same side of the modular head 1 .

Further, the first connector 107 is electrically connected to the incoming wire end 202 or the outgoing wire end 203 .

Further, the second connector 108 is electrically connected to the incoming wire end 202 or the outgoing wire end 203 .

Further, the breaking contact 104 includes a moving contact and a static contact.

Further, it also includes a fixed plate 4, the circuit board 3 is arranged on the fixed plate 4, and the fixed plate 4 is provided with at least one aforementioned plug-in miniature circuit breaker, corresponding to which several plug-in miniature circuit breakers can be connected The device base and module head can realize the centralized management and control of several miniature circuit breakers, improve management efficiency, and facilitate the combination design of different specifications of miniature circuit breakers for designers.

Optionally, the fixing plate may be an iron plate.

Embodiment five

FIG. 5 shows a schematic structural diagram of the plug-in miniature circuit breaker of the fifth embodiment. As shown in FIG. 5 , in the plug-in miniature circuit breaker according to the fifth preferred embodiment of the present invention, the same parts as those in the fourth embodiment shown in FIG. 4 are denoted by the same reference numerals. Only the differences will be described below. In this embodiment, the current detection device 204 is set on the module head 1 , and the electromagnetic driving mechanism 205 is set on the base 2 .

Embodiment six

FIG. 6 shows a schematic structural diagram of the plug-in miniature circuit breaker of the sixth embodiment. As shown in FIG. 2 , in the pluggable miniature circuit breaker of the sixth preferred embodiment of the present invention, the same parts as those in the fourth embodiment shown in FIG. 4 are denoted by the same reference numerals. Only the differences will be described below. In this embodiment, the current detection device 204 is set on the base 2 , and the electromagnetic driving mechanism 205 is set on the module head 1 .

The plug-in miniature circuit breaker provided by the present invention can, on the one hand, solve the problems of poor protection precision, potential safety hazards and incomplete protection existing in miniature circuit breakers in the prior art, and improve the protection precision and protection accuracy of the plug-in miniature circuit breaker. Realize the intelligent control of the plug-in miniature circuit breaker; on the other hand, by designing the structure of the module head and the base, the quick plugging and unplugging of the module head and the base can be realized, which solves the problem of maintenance or replacement of the miniature circuit breaker in the prior art. problem, significantly improve the work efficiency of staff, and improve the continuity of power supply; in addition, it can also realize the centralized management and control of several miniature circuit breakers, improve management efficiency, and facilitate the combination design of different specifications of miniature circuit breakers for designers.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present invention, and should cover Within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. a kind of plug-in miniature circuit breaker, including module head (1) and pedestal (2)；The module head (1) includes first shell (101), handle (102), disjunction link mechanism (103), Pyromagnetic release (104), break contact (105) and arc-chute (106)； The pedestal (2) includes second shell (201), at least one end of incoming cables (202) and at least one leading-out terminal (203)；Its feature It is, the module head (1) is additionally provided at least one first connector (107) and at least one second connector (108)；Institute It states module head (1) and passes through first connector (107) and the second connector (108) and the pedestal (2) plug connection；Also wrap Include current detection means (204) and electromagnetic drive mechanism (205)；The electromagnetic drive mechanism (205) and the disjunction connecting rod machine Structure (103) and/or the break contact (105) are drivingly connected；It further include wiring board (3), the wiring board (3) is provided with micro- place Reason device (301) and at least one the third plug connector (302) being connected with the microprocessor (301)；The wiring board (3) is logical Cross the third plug connector (302) and the current detection means (204) and electromagnetic drive mechanism (205) plug connection.

2. plug-in miniature circuit breaker according to claim 1, which is characterized in that third plug connector (302) connection There are at least one set of current detection means (204) and electromagnetic drive mechanism (205).

3. plug-in miniature circuit breaker according to claim 1, which is characterized in that the wiring board (3) is additionally provided with letter Number terminals (303), the signal terminal (303) are connected with the microprocessor (301).

4. plug-in miniature circuit breaker according to claim 1, which is characterized in that the wiring board (3) is additionally provided with electricity Source terminals (304), the supply terminals (304) are connected with the wiring board (3).

5. plug-in miniature circuit breaker according to claim 1, which is characterized in that first connector (107) and Two connectors (108) are respectively arranged at the two sides of the module head (1).

6. plug-in miniature circuit breaker according to claim 1, which is characterized in that first connector (107) and Two connectors (108) are set to the same side of the module head (1).

7. plug-in miniature circuit breaker according to claim 1, which is characterized in that first connector (107) and institute State end of incoming cables (202) or the leading-out terminal (203) electrical connection；Second connector (108) and the end of incoming cables (202) or institute State leading-out terminal (203) electrical connection.

8. plug-in miniature circuit breaker according to claim 1, which is characterized in that the current detection means (204) sets It is placed in the module head (1) or pedestal (2)；The electromagnetic drive mechanism (205) is set to the module head (1) or pedestal (2).

9. plug-in miniature circuit breaker according to claim 1, which is characterized in that the break contact (104) includes dynamic Contact and static contact.

10. plug-in miniature circuit breaker according to claim 1, which is characterized in that it further include a fixed plate (4), it is described Wiring board (3) is set on fixed plate (4), and the fixed plate (4) is provided with described in any one of at least one claim 1-9 Plug-in miniature circuit breaker.