CN216213217U - Circuit breaker - Google Patents

Abstract

The application provides a circuit breaker relates to low-voltage apparatus technical field, including the casing, the casing includes base and the upper cover that mutual lock formed the inner chamber, is provided with operating device, combined floodgate electro-magnet, first separating brake electro-magnet and second separating brake electro-magnet at the inner chamber, combined floodgate electro-magnet and operating device drive fit for drive operating device combined floodgate, first separating brake electro-magnet and second separating brake electro-magnet respectively with operating device drive fit, be used for driving operating device separating brake respectively. Because the electromagnet is adopted to drive the switching on and switching off of the operating mechanism, compared with a motor driving mode, the switching on and switching off speed can be effectively improved, the electrical loss of the circuit breaker is reduced, and the electrical service life is prolonged. Meanwhile, the parts required by electric brake opening can be effectively simplified by adopting the electromagnet driving mode, and the combined closing electromagnet and the second brake opening electromagnet are respectively positioned on two opposite sides of the first brake opening electromagnet, so that the flat layout inside the circuit breaker can be easily realized, and the thickness of the circuit breaker is reduced.

Description

Circuit breaker

Technical Field

The application relates to the technical field of low-voltage apparatuses, in particular to a circuit breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and the safety of household electricity utilization is required to be higher. The circuit breaker may be installed in a terminal distribution line. Meanwhile, the circuit can be connected, carried and disconnected under the condition of normal or abnormal circuit, and the circuit and the electrical equipment are effectively protected.

When the existing circuit breaker realizes electric switching on and off, a motor, a gear set, an operating mechanism and a release are usually arranged, so that more parts are arranged in a shell of the circuit breaker, and the thickness of the circuit breaker is thicker.

SUMMERY OF THE UTILITY MODEL

An object of this application lies in, to the not enough among the above-mentioned prior art, provides a circuit breaker to improve there is the circuit breaker to make the thicker problem of circuit breaker thickness because of setting up motor, gear train etc..

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

in one aspect of the embodiment of the application, a circuit breaker is provided, which comprises a housing, the housing comprises a base and an upper cover which are mutually buckled to form an inner cavity, an operating mechanism, a closing electromagnet, a first separating electromagnet and a second separating electromagnet are arranged in the inner cavity, the closing electromagnet is in driving fit with the operating mechanism and used for driving the closing of the operating mechanism, the first separating electromagnet and the second separating electromagnet are respectively in driving fit with the operating mechanism and used for driving the separating of the operating mechanism, and the closing electromagnet and the second separating electromagnet are respectively located on two opposite sides of the first separating electromagnet.

Optionally, the operating mechanism includes a button, a transmission member, a contact mechanism and a locking mechanism, the button is in driving connection with the contact mechanism through the transmission member, the closing electromagnet is in driving fit with the button and used for driving the button to move towards a closing direction so as to be locked with the locking mechanism to enable the contact mechanism to be kept in a closing state, and the first and second separating electromagnets are respectively in driving fit with the locking mechanism and are respectively used for driving the locking mechanism to be unlocked with the button to enable the contact mechanism to be separated from the switch.

Optionally, the transmission member, the contact mechanism and the latch mechanism are stacked and arranged along the direction from the base to the upper cover.

Optionally, the base is rectangular, the closing electromagnet, the first separating electromagnet and the second separating electromagnet are sequentially arranged along the length direction of the base, the closing electromagnet and the first separating electromagnet are both located on the same side of the transmission part along the width direction of the base, and the second separating electromagnet is located on one side of the contact mechanism along the width direction of the base.

Optionally, the locking mechanism includes a locking piece and a release piece which are matched with each other in a driving manner, the locking piece is matched with the button to lock or unlock, the first opening electromagnet is matched with the locking piece in a driving manner, the second opening electromagnet is matched with the release piece in a driving manner, the locking piece and the release piece are arranged along the width direction of the base, and the release piece is located between the first opening electromagnet and the second opening electromagnet.

Optionally, the action directions of the closing electromagnet and the second opening electromagnet are the same as the length direction of the base, and the action direction of the first opening electromagnet is the same as the width direction of the base.

Optionally, still include overload protection mechanism and arc extinguishing mechanism, arc extinguishing mechanism is located the one side that contact mechanism deviates from the driving medium along the length direction of base, and overload protection mechanism is connected with the latched device drive, and arranges along the width direction of base with arc extinguishing mechanism.

Optionally, the switch further comprises a first circuit board assembly and a second circuit board assembly which are electrically connected with each other and arranged in the inner cavity, the first circuit board assembly is electrically connected with the switching-on electromagnet, the second circuit board assembly is electrically connected with the second switching-off electromagnet, the first circuit board assembly is located between the button and the base, and the second circuit board and the button are located at two opposite ends of the base respectively.

Optionally, the first circuit board assembly includes a first circuit board electrically connected to the second circuit board assembly, and a first signal terminal and a temperature sensor disposed on the first circuit board, and the first signal terminal is matched with the operating mechanism and used for controlling the switching-on electromagnet to be powered off according to the position information of the operating mechanism.

Optionally, the second circuit board assembly includes a second circuit board electrically connected to the first circuit board assembly and a second signal terminal disposed on the second circuit board and used for externally connecting to the controller.

Optionally, the first wiring assembly and the second wiring assembly are arranged in the inner cavity, the first wiring assembly and the second wiring assembly are located at two opposite ends of the base respectively, the second wiring assembly comprises a first wiring terminal and a second wiring terminal, the first wiring assembly forms a first branch circuit through a contact mechanism and the first wiring terminal in an electric connection mode, the first wiring assembly and the second wiring terminal in an electric connection mode form a second branch circuit, a first end and a second end are further arranged on the second circuit board, and the second shunt electromagnet is respectively in electric connection with the first branch circuit and the second branch circuit through the first end and the second end.

Optionally, the wire connecting device further comprises a button and a first wire connecting assembly, the button and the first wire connecting assembly are arranged in the inner cavity, the first wire connecting assembly and the button are located on the same side of the shell, two sets of wire connecting holes corresponding to the first wire connecting assembly are formed in the shell, and the two sets of wire connecting holes and the button are arranged along a straight line.

Optionally, an indication window is further disposed on the button; or, an indication window is further arranged on the shell, and the indication window is positioned on one side of the button close to or far away from the wiring hole.

Optionally, the thickness of the shell is 10mm or less.

Optionally, a protective cover is further disposed on the outer wall of the housing, and one end of the button extending out of the housing is located in the protective cover.

The beneficial effect of this application includes:

the application provides a circuit breaker, including the casing, the casing includes base and the upper cover that mutual lock formed the inner chamber, is provided with operating device, combined floodgate electro-magnet, first separating brake electro-magnet and second separating brake electro-magnet at the inner chamber, and combined floodgate electro-magnet and operating device drive cooperation for drive operating device combined floodgate, first separating brake electro-magnet and second separating brake electro-magnet respectively with operating device drive cooperation, are used for driving operating device separating brake respectively. Because the electromagnet is adopted to drive the switching on and switching off of the operating mechanism, compared with a motor driving mode, the switching on and switching off speed can be effectively improved, the electrical loss of the circuit breaker is reduced, and the electrical service life is prolonged. Meanwhile, the parts required by electric brake opening can be effectively simplified by adopting the electromagnet driving mode, and the combined closing electromagnet and the second brake opening electromagnet are respectively positioned on two opposite sides of the first brake opening electromagnet, so that the flat layout inside the circuit breaker can be easily realized, and the thickness of the circuit breaker is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic diagram of a state in which a circuit breaker is located at an opening position according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram illustrating a state where a circuit breaker is located at a closing position according to an embodiment of the present disclosure;

fig. 3 is a second schematic view illustrating a state where the circuit breaker is located at a closing position according to an embodiment of the present application;

fig. 4 is a schematic diagram illustrating a state that a circuit breaker provided in an embodiment of the present application is opened;

fig. 5 is an isometric view of a circuit breaker provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of a circuit breaker according to an embodiment of the present disclosure;

fig. 7 is a side view of a circuit breaker according to an embodiment of the present disclosure;

fig. 8 is a second side view of a circuit breaker according to an embodiment of the present disclosure;

fig. 9 is a third side view of a circuit breaker according to an embodiment of the present disclosure;

fig. 10 is a fourth side view of a circuit breaker according to an embodiment of the present application.

Icon: 100-a housing; 110-a shield; 120-a button; 121-hooks of buttons; 122-an extension; 130-a mounting mechanism; 140-a catch member; 141-hooks for locking elements; 150-a transmission member; 160-a release fastener; 170-moving contact support; 180-moving contact; 190-overload protection mechanism; 200-an arc extinguishing mechanism; 210-a flow divider; 220-a first connection terminal; 230-a second connection terminal; 240-a second circuit board; 241-second signal terminals; 251-a first end; 252-a second end; 260-static contact; 270-a second breaking electromagnet; 290-a first breaking electromagnet; 300-a closing electromagnet; 320-a guide strip; 330-a fourth connection terminal; 340-a third connection terminal; 380-a first circuit board; 381-first signal terminals; 382-a temperature sensor; 390-indication window; 400-upper cover; 410-an operational via; 420-wiring vias.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. It should be noted that, in case of conflict, various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and thus, are not to be construed as limitations of the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood in a specific case by those of ordinary skill in the art.

In one aspect of the embodiment of the present application, as shown in fig. 1, a circuit breaker is provided, which includes a housing 100, where the housing 100 includes a base and an upper cover 400 that are fastened to each other to form an inner cavity, and an operating mechanism, a closing electromagnet 300, a first opening electromagnet 290, and a second opening electromagnet 270 are disposed in the inner cavity. The closing electromagnet 300 is in driving engagement with the operating mechanism, so that when the closing electromagnet 300 is energized, the operating mechanism can be driven to close. The first opening electromagnet 290 and the second opening electromagnet 270 are respectively matched with the operating mechanism in a driving manner, so that when needed, the operating mechanism is driven by the first opening electromagnet 290 or the second opening electromagnet 270 to open, and therefore the opening and closing functions of the circuit breaker are achieved. Because the electromagnet is adopted to drive the switching on and switching off of the operating mechanism, compared with a motor driving mode, the switching on and switching off speed can be effectively improved, the electrical loss of the circuit breaker is reduced, and the electrical service life is prolonged. Simultaneously, because current motor drive's form is limited in the drive form of motor, need have more middleware to carry out transmission and conversion, consequently, this application adopts the form of electro-magnet drive can effectively simplify the required spare part of electronic separating brake, reduces the thickness of circuit breaker, is favorable to the miniaturization of circuit breaker.

It should be understood that the first opening electromagnet 290 and the second opening electromagnet 270 are respectively capable of corresponding to different opening requirements of the circuit breaker (for example, normal opening, fault opening, etc.), and realize opening driving of the operating mechanism. For example, the first opening electromagnet 290 may be an instantaneous release, and its coil is connected to the main circuit of the breaker, and when the breaker is short-circuited, its action drives the operating mechanism to open; the second opening electromagnet 270 can be used only for normal opening, that is, when there is no fault and opening is needed, the second opening electromagnet 270 drives the operating mechanism to open. Of course, in other embodiments, the first opening electromagnet 290 may be used only for normal opening and the second opening electromagnet 270 may be used as an instantaneous release.

In actual arrangement, as shown in fig. 1, the first opening electromagnet 290 may be disposed between the closing electromagnet 300 and the second opening electromagnet 270, so that the closing electromagnet 300, the first opening electromagnet 290, and the second opening electromagnet 270 may be sequentially arranged along the same plane, orthographic projections of the three on the plane are not stacked, and the three may act on the operating mechanism at different positions, thereby easily achieving a flat layout inside the circuit breaker and reducing the thickness of the circuit breaker.

It should be noted that, for the convenience of understanding of the present application, the upper cover 400 is not shown in any of fig. 1 to 4, and for the convenience of description, the following description will be made based on the case where the base has a rectangular parallelepiped structure.

Optionally, as shown in fig. 1, the closing electromagnet 300, the first opening electromagnet 290, and the second opening electromagnet 270 are sequentially arranged along the length direction y of the base, and the closing electromagnet 300, the first opening electromagnet 290, and the second opening electromagnet 270 are all located at the same side of the operating mechanism, for example, at the left side in fig. 1, so that the closing electromagnet 300, the first opening electromagnet 290, and the second opening electromagnet 270 can be conveniently arranged by fully utilizing the space at the left side of the operating mechanism.

Optionally, as shown in fig. 1 to 6, the operating mechanism includes a button 120, a transmission member 150, a contact mechanism and a locking mechanism, when the layout is performed, the contact mechanism, the locking mechanism and the transmission member 150 may be sequentially stacked and arranged in a direction from the base to the upper cover 400 (i.e., a thickness direction or a height direction z), and the button 120 and the locking mechanism are disposed in the same layer, because the thickness of the transmission member 150, the contact mechanism and the locking mechanism itself along the height direction z is smaller, and the thickness of the closing electromagnet 300, the first separating electromagnet 290 and the second separating electromagnet 270 along the height direction z is thicker, when the layout is performed, the transmission member 150, the contact mechanism and the locking mechanism may be stacked, so as to fully utilize the space in the height direction z, and reduce the space occupation of the operating mechanism in the width direction x.

In some embodiments, as shown in fig. 5, the contact mechanism includes a movable contact 180 assembly and a fixed contact 260 arranged along a width direction x, and since the movable contact 180 assembly needs to be accurately contacted with the fixed contact 260 through switching on and off, the thickness of the movable contact 180 assembly in a height direction z is relatively thick, for example, as shown in fig. 5, the movable contact 180 assembly includes a movable contact support 170 rotatably disposed on the base and connected to the transmission member 150 and a movable contact 180 rotatably disposed on the movable contact support 170, wherein the movable contact support 170 is a double-layer structure, and the movable contact 180 is located between the double-layer structures. Therefore, the latching mechanism can be thinned at the position where the latching mechanism and the movable contact 180 assembly are stacked, so as to leave a space for arranging the movable contact 180 assembly, for example, as shown in fig. 5, the latching mechanism includes the latching element 140 and the release element 160 on the same layer, the portion where the latching element 140 and the movable contact support 170 are stacked is thinned, and the release element 160 is a single-layer structure stacked with the movable contact support 170.

During actual transmission, the button 120 is in driving connection with the contact mechanism through the transmission member 150, the closing electromagnet 300 is in driving fit with the button 120, and the first opening electromagnet 290 and the second opening electromagnet 270 are respectively in driving fit with the locking mechanism, so that when closing is needed, the closing electromagnet 300 can drive the button 120 to move towards the closing direction, on one hand, the contact 180 mechanism is driven to close through the transmission member 150, and on the other hand, when the contact mechanism completes closing, the button 120 can be locked with the locking mechanism to enable the contact mechanism to keep a closing state; when the opening is needed, the first opening electromagnet 290 or the second opening electromagnet 270 may drive the locking mechanism and the button 120 to unlock, so that the button 120, the transmission member 150, and the contact mechanism are opened. As shown in fig. 1 to 6, the locking of the button 120 and the locking member 140 can be realized by hooking the hook 121 of the button and the hook 141 of the locking member.

In some embodiments, as shown in fig. 1 and fig. 6, the locking mechanism includes a locking member 140 and a releasing member 160 which are in driving fit, wherein the locking member 140 is matched with the button 120 to realize locking during closing and unlocking during opening, the releasing member 160 is abutted against the locking member 140, and when necessary, the releasing member 160 is driven by a second opening electromagnet 270 to unlock the locking member 140 from the button 120. The first opening electromagnet 290 can directly drive the locking member 140 and the button 120 to unlock. In the actual layout, the closing electromagnet 300 and the first opening electromagnet 290 may be disposed on the left side of the release member 160 or the transmission member 150 in the width direction x, and the second opening electromagnet 270 may be disposed on the left side of the contact mechanism in the width direction x.

In some embodiments, as shown in fig. 1 to 6, in order to facilitate the closing electromagnet 300 to drive the button 120 located at the right side thereof, the button 120 may include an extension portion 122, the extension portion 122 extends toward the left side and is in driving engagement with the closing electromagnet 300 located at the left side, and similarly, in order to facilitate the second opening electromagnet 270 to drive the release member 160, the release member 160 may also extend toward the left side and is in driving engagement with the second opening electromagnet 270 located at the left side. At this time, the closing electromagnet 300 and the first opening electromagnet 290 are located between the extension portion 122 and the extension portion of the release member 160, and the second opening electromagnet 270 and the first opening electromagnet 290 are located at opposite sides of the release member 160, respectively. In order to improve the space utilization, the movement direction of the first opening electromagnet 290 is the same as the width direction x, so that the space occupation in the length direction y can be reduced, the movement direction of the second opening electromagnet 270 is the same as the length direction y, so that the space occupation in the width direction x can be reduced, and a layout space is reserved for the right-side contact mechanism.

Optionally, as shown in fig. 1 to 6, the circuit breaker further includes an overload protection mechanism 190 and an arc extinguishing mechanism 200, the arc extinguishing mechanism 200 is located on one side of the contact mechanism away from the transmission member 150 along a length direction y of the base, the overload protection mechanism 190 and the arc extinguishing mechanism 200 are arranged along a width direction x of the base, that is, as shown in fig. 1, the arc extinguishing mechanism 200 is located on a lower side of the contact mechanism, so as to extinguish an arc, and the overload protection mechanism 190 is located on a right side of the arc extinguishing mechanism 200.

In actual action, the overload protection mechanism 190 is in driving connection with the locking piece 140, and when the circuit breaker is overloaded, the overload protection mechanism 190 drives the locking piece 140 to unlock the locking piece 140 and the button 120, so that the circuit breaker is switched off. As shown in fig. 1 and 5, the overload protection mechanism 190 includes a drawbar and a bimetal, one end of the bimetal is connected to the movable contact 180 through a flexible connection line, the other end of the bimetal is connected to the first connection terminal 220 through the shunt 210, one end of the drawbar is connected to the bimetal, and the other end of the drawbar is connected to the latch 140. In some embodiments, the drawbar may have a bent portion, so that when the bimetal is deformed, the end of the drawbar hung on the bimetal moves along the length direction y, and the bimetal is prevented from jacking up the drawbar and striking the housing 100.

Optionally, as shown in fig. 2 and 5, the circuit breaker further includes a first circuit board 380 component and a second circuit board 240 component electrically connected to each other and disposed in the inner cavity, the first circuit board 380 component is disposed to be electrically connected to the closing electromagnet 300, the second circuit board 240 component is electrically connected to the second breaking electromagnet 270 (at this time, the second breaking electromagnet 270 may be used as a normal breaking), the first circuit board 380 component is located between the button 120 and the base (fully utilizing a space between the button 120 and the base), the second circuit board 240 and the button 120 are respectively located at two opposite ends of the base, that is, the second circuit board 240 is located between the first connection terminal 220 and the second connection terminal 230. The first and second circuit board 380 and 240 assemblies may be interference fit to the base through the holes and posts.

Optionally, as shown in fig. 2 and fig. 5, the first circuit board 380 assembly includes a first circuit board 380 electrically connected to the second circuit board 240 assembly, and a first signal terminal 381 and a temperature sensor 382 disposed on the first circuit board 380, where the temperature sensor 382 is disposed on one side of the first circuit board 380, so as to facilitate collecting temperature information of the first circuit board, and the first signal terminal 381 is engaged with an operating mechanism, for example, the first signal terminal 381 is a micro switch, and is disposed at a locking position of the button 120 and the locking member 140, and after the button 120 completes closing and is locked with the locking member 140, the button 120 triggers the first signal terminal 381, and at this time, the closing electromagnet 300 on the first circuit board 380 is powered off and then reset.

Optionally, as shown in fig. 2 and 5, the second circuit board 240 assembly includes a second circuit board 240 electrically connected to the first circuit board 380 assembly and a second signal terminal 241 disposed on the second circuit board 240, and the second signal terminal 241 is used for externally connecting a controller. The second signal terminal 241 is located between the first connection terminal 220 and the second connection terminal 230. The second signal terminal 241 can supply power to the first circuit board 380 assembly and the closing electromagnet 300, and can also transmit signals of the temperature sensor 382, the first signal terminal 381, the closing electromagnet 300, and the second opening electromagnet 270. The first circuit board 380 and the second circuit board 240 are divided into two parts, so that the flexibility of the circuit boards arranged in the circuit breaker housing 100 can be further improved.

Optionally, as shown in fig. 1, 5, and 7, the circuit breaker further includes a first wiring assembly and a second wiring assembly disposed in the inner cavity, the first wiring assembly and the second wiring assembly are respectively located at two opposite ends of the base along the length direction y, the second wiring assembly includes a first wiring terminal 220 and a second wiring terminal 230, and the first wiring assembly includes a third wiring terminal 340 and a fourth wiring terminal 330. The first connection terminal 220 is connected to the movable contact 180 through the shunt 210, the load protection mechanism, and a flexible connection line (not shown), and the stationary contact 260 is connected to the third connection terminal 340, so that a first branch is formed from the first connection terminal 220 to the third connection terminal 340; the fourth connection terminal 330 and the second connection terminal 230 are electrically connected to form a second branch.

As shown in fig. 1 and 5, the second circuit board 240 is further provided with a first end 251 and a second end 252, and the second switching electromagnet 270 is electrically connected to the first branch and the second branch through the first end 251 and the second end 252, respectively, so that when the circuit breaker is switched on, the first end 251 and the second end 252 can supply power to a circuit where the second switching electromagnet 270 is located, and when switching off is required, the controller controls the circuit where the second switching electromagnet 270 is located to be switched on, and the second switching electromagnet 270 is powered on to control switching off.

Optionally, as shown in fig. 1 and 7, the first wiring assembly includes a third wiring terminal 340 and a fourth wiring terminal 330, a group of wiring holes corresponding to the third wiring terminal 340 is disposed on the housing 100, another group of wiring holes corresponding to the fourth wiring terminal 330 is further disposed, and the two groups of wiring holes and the button 120 are linearly arranged. Each set of the wiring holes may include the wiring through hole 420 and the operation through hole 410, that is, all the operation holes and the wiring holes are arranged in a straight line, so that the thickness of the case 100 can be further reduced, for example, a thickness of the circuit breaker case 100 of 10mm or less can be realized.

Optionally, as shown in fig. 1 and 7, a guide bar 320 is further disposed on an outer wall of the casing 100, and an extending direction of the guide bar 320 is the same as a plugging direction of the circuit breaker, so that the circuit breaker can be smoothly plugged into the cabinet through the guide bar 320. The guide strip 320 may be one or more. As shown in fig. 1, an installation mechanism 130 is further disposed on the right side of the button 120, so that after the circuit breaker is installed in the cabinet, the circuit breaker can be clamped with the cabinet by the installation mechanism 130, and the circuit breaker is prevented from falling off accidentally.

Optionally, an indicator and an indicator window 390 corresponding to the indicator are further disposed on the circuit breaker.

In some embodiments, as shown in fig. 7, an indicator is disposed on the button 120, and an indication window 390 is further disposed on an end surface of the button 120 extending out of the housing 100, and the indicator can indicate the on/off state of the circuit breaker through the indication window 390.

In some embodiments, as shown in fig. 8, an indicator is disposed in the housing 100, and an indication window 390 is disposed on the housing 100 at the upper end of the button 120, and the indicator can indicate the on/off state of the circuit breaker through the indication window 390.

In some embodiments, an indicator is disposed in the housing 100, and an indication window 390 is disposed on the housing 100 at the lower end of the button 120, and the indicator can indicate the on/off state of the circuit breaker through the indication window 390, as shown in fig. 9, the indication window 390 may be located at the right side of the wiring hole, as shown in fig. 10, and the indication window 390 may also be located at the left side of the wiring hole.

In some embodiments, as shown in fig. 1 to 10, the first wiring assembly and the button 120 are located on the same side of the housing 100, and since the first wiring assembly requires a user to perform load wiring, a protective cover 110 or a protective frame may be disposed on the housing 100 around the button 120 to prevent the wiring harness of the first wiring assembly from interfering with the opening and closing of the button 120.

Initial state: as shown in fig. 1, the operating mechanism is in an open state, the movable contact 180 is separated from the fixed contact 260, and the button 120 and the locking member 140 are in an unlocked state.

Electric switching-on: the closing electromagnet 300 drives the button 120 to move downward, as shown in fig. 1, at this time, the button 120 drives the movable contact 180 assembly to rotate clockwise through the transmission member 150, and the movable contact 180 assembly and the fixed contact 260 are closed. At the same time, the hook 121 of the button is locked with the hook 141 of the locker, and thus the operating mechanism is maintained in a closed state. As shown in fig. 2, when the operating mechanism is kept in the closing state, the button 120 and the locking member 140 are locked, and the button 120 triggers the first signal terminal 381 to control the closing electromagnet 300 to be reset to the state shown in fig. 3 after power failure.

Electric brake opening: when the second opening electromagnet 270 receives the opening signal, the moving iron core of the second opening electromagnet 270 moves to drive the ejector rod to drive the release member 160 to rotate clockwise, as shown in fig. 4; the ejector rod at one end of the releasing piece 160 far away from the second opening electromagnet 270 acts on the locking piece 140 to further drive the locking piece 140 to rotate anticlockwise, and at the moment, the locking piece 140 and the button 120 are unlocked; the operating mechanism is opened and the second opening electromagnet 270 is reset, returning to the state shown in fig. 1.

Short-circuit fault opening: when the breaker has a short-circuit fault, the moving iron core of the first opening electromagnet 290 moves to drive the ejector rod to drive the locking piece 140 to rotate anticlockwise, the locking piece 140 and the button 120 are unlocked, the operating mechanism is opened, and the state shown in fig. 1 is returned.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (15)

1. The utility model provides a circuit breaker, its characterized in that, includes casing (100), casing (100) are including base and upper cover (400) that mutual lock formed the inner chamber is provided with operating device, combined floodgate electro-magnet (300), first separating brake electro-magnet (290) and second separating brake electro-magnet (270), combined floodgate electro-magnet (300) with operating device drive cooperation is used for the drive operating device is closed a floodgate, first separating brake electro-magnet (290) with second separating brake electro-magnet (270) respectively with operating device drive cooperation is used for the drive operating device separating brake respectively, combined floodgate electro-magnet (300) with second separating brake electro-magnet (270) are located respectively the relative both sides of first separating brake electro-magnet (290).

2. The circuit breaker according to claim 1, wherein the operating mechanism comprises a button (120), a transmission member (150), a contact mechanism and a latch mechanism, the button (120) is drivingly connected with the contact mechanism through the transmission member (150), the closing electromagnet (300) is drivingly engaged with the button (120) for driving the button (120) to move toward a closing direction to be locked with the latch mechanism so as to keep the contact mechanism in a closing state, and the first opening electromagnet (290) and the second opening electromagnet (270) are drivingly engaged with the latch mechanism respectively for driving the latch mechanism to be unlocked with the button (120) so as to open the contact mechanism.

3. The circuit breaker according to claim 2, wherein said transmission member (150), contact mechanism and said latch mechanism are stacked in a direction from said base to said upper cover (400).

4. The circuit breaker according to claim 2 or 3, wherein the base is rectangular, the closing electromagnet (300), the first opening electromagnet (290) and the second opening electromagnet (270) are sequentially arranged along a length direction of the base, the closing electromagnet (300) and the first opening electromagnet (290) are both located on a same side of the transmission member (150) along a width direction of the base, and the second opening electromagnet (270) is located on a side of the contact mechanism along the width direction of the base.

5. The circuit breaker according to claim 4, wherein the latch mechanism comprises a locking member (140) and a releasing member (160) which are engaged with each other in a driving manner, the locking member (140) is engaged with the button (120) to be locked or unlocked, the first opening electromagnet (290) is engaged with the locking member (140) in a driving manner, the second opening electromagnet (270) is engaged with the releasing member (160) in a driving manner, the locking member (140) and the releasing member (160) are arranged in a width direction of the base, and the releasing member (160) is located between the first opening electromagnet (290) and the second opening electromagnet (270).

6. The circuit breaker according to claim 5, wherein the closing electromagnet (300) and the second opening electromagnet (270) have the same operation direction as the longitudinal direction of the base, and the first opening electromagnet (290) has the same operation direction as the width direction of the base.

7. The circuit breaker according to claim 4, characterized in that, further comprises an overload protection mechanism (190) and an arc extinguishing mechanism (200), the arc extinguishing mechanism (200) is located on the side of the contact mechanism facing away from the transmission member (150) along the length direction of the base, the overload protection mechanism (190) is in driving connection with the latch mechanism and is arranged along the width direction of the base with the arc extinguishing mechanism (200).

8. The circuit breaker of claim 2, further comprising a first circuit board (380) component and a second circuit board (240) component electrically connected to each other and disposed in the interior chamber, the first circuit board (380) component being electrically connected to the closing electromagnet (300), the second circuit board (240) component being electrically connected to the second opening electromagnet (270), the first circuit board (380) component being disposed between the button (120) and the base, the second circuit board (240) and the button (120) being disposed at opposite ends of the base, respectively.

9. The circuit breaker according to claim 8, wherein the first circuit board (380) assembly comprises a first circuit board (380) electrically connected to the second circuit board (240) assembly, and a first signal terminal (381) and a temperature sensor (382) disposed on the first circuit board (380), the first signal terminal (381) cooperating with the operating mechanism for controlling the closing electromagnet (300) to be de-energized according to the position information of the operating mechanism.

10. The circuit breaker of claim 8 wherein said second circuit board (240) assembly includes a second circuit board (240) electrically connected to said first circuit board (380) assembly and a second signal terminal (241) disposed on said second circuit board (240) and adapted to externally connect to a controller.

11. The circuit breaker of claim 10, further comprising a first wiring assembly and a second wiring assembly disposed in the interior chamber, the first wiring member and the second wiring member are respectively located at opposite ends of the base, the second terminal assembly includes a first terminal (220) and a second terminal (230), the first wiring component is electrically connected with the first wiring terminal (220) through the contact mechanism to form a first branch circuit, the first wiring assembly and the second wiring terminal (230) are electrically connected to form a second branch, a first end (251) and a second end (252) are also arranged on the second circuit board (240), the second switching electromagnet (270) is electrically connected with the first branch circuit and the second branch circuit respectively through the first end (251) and the second end (252).

12. The circuit breaker of claim 1, further comprising a button (120) disposed in the inner chamber and a first wiring block, the first wiring block and the button being located on the same side of the housing (100), two sets of wiring holes corresponding to the first wiring block are provided in the housing (100), and the two sets of wiring holes and the button (120) are arranged in a straight line.

13. The circuit breaker of claim 12, wherein an indication window (390) is further provided on the button (120); or, an indication window (390) is further arranged on the shell (100), and the indication window (390) is positioned on one side of the button (120) close to or far away from the wiring hole.

14. The circuit breaker of claim 1 wherein the thickness of the housing (100) is 10mm or less.

15. The circuit breaker according to claim 2, characterized in that a protective cover (110) is further provided on the outer wall of the housing (100), and one end of the button (120) extending out of the housing is located in the protective cover (110).

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