CN216902749U - Leakage circuit breaker - Google Patents
Leakage circuit breaker Download PDFInfo
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- CN216902749U CN216902749U CN202123339269.7U CN202123339269U CN216902749U CN 216902749 U CN216902749 U CN 216902749U CN 202123339269 U CN202123339269 U CN 202123339269U CN 216902749 U CN216902749 U CN 216902749U
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Abstract
The utility model discloses an electric leakage circuit breaker, which relates to the technical field of electrical equipment and comprises a rectangular shell, and a first ship-shaped handle and a second ship-shaped handle which are arranged on a first side surface of the shell in parallel, wherein a neutral pole and a protective pole are arranged in the shell in parallel, the protective pole comprises a first operating mechanism and a first moving contact which are in transmission connection and a first static contact component, the neutral pole comprises a second operating mechanism and a second moving contact which are in transmission connection and a second static contact component, the first ship-shaped handle and the first operating mechanism as well as the second ship-shaped handle and the second operating mechanism are in transmission connection through a four-bar structure, and the first ship-shaped handle drives the first moving contact to be separated from or closed with the first static contact component through the first operating mechanism. The residual current circuit breaker provided by the utility model has the advantages that the internal structure of the circuit breaker is compact, and the volume of the residual current circuit breaker is reduced.
Description
Technical Field
The application relates to the technical field of electrical equipment, in particular to an electric leakage circuit breaker.
Background
A residual current circuit breaker (residual current circuit-breaker) is a switch which can automatically act when the leakage current in a circuit exceeds a preset value, and is used for backup protection for preventing faults such as personal electric shock, fire, line aging and the like. The leakage circuit breaker is divided into an electromagnetic type and an electronic type, a zero sequence transformer is arranged in the leakage circuit breaker, current of a protective pole and a neutral pole simultaneously passes through the zero sequence transformer, the purpose of leakage protection is achieved by detecting unbalanced current in the zero sequence transformer, when an electric shock or leakage fault occurs in a circuit, the sum of current phasors passing through the zero sequence transformer is not zero, so that leakage current is generated, and the electromagnetic type leakage circuit breaker controls the opening of the circuit breaker according to the leakage current so as to achieve the purpose of automatically cutting off a power supply; the electronic leakage circuit breaker controls the circuit breaker to open according to the leakage current signal through the controller so as to achieve the purpose of automatically cutting off the power supply.
Current earth leakage circuit breaker binding post sets up at the circuit breaker both ends for the screw wiring, and occupation space is big, and activity space is big when the top handle is operated, and generous buckle occupies this external extra space of circuit breaker, and the whole volume of circuit breaker is great.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide an electric leakage circuit breaker, can make circuit breaker inner structure compact, reduce electric leakage circuit breaker's volume.
The embodiment of the application provides a residual current circuit breaker, which comprises a rectangular shell, a first ship-shaped handle and a second ship-shaped handle, wherein the first ship-shaped handle and the second ship-shaped handle are arranged on a first side surface of the shell in parallel; the two ends of the second side face opposite to the first side face are respectively provided with an input terminal and an output terminal, the input terminal comprises a first input terminal and a second input terminal which are arranged in parallel, the first input terminal and the second input terminal are respectively and correspondingly connected with the first static contact component and the second static contact component, the output terminal comprises a first output terminal and a second output terminal which are arranged in parallel, and the first output terminal and the second output terminal are respectively and correspondingly connected with the first moving contact and the second moving contact; the residual current circuit breaker further comprises an electric operation shell connected with the shell, a circuit board and a driving piece connected with the circuit board are arranged in the electric operation shell, and the driving piece drives the first operating mechanism and the second operating mechanism to be switched on or switched off.
As an implementable mode, the four-bar linkage structure comprises a U-shaped connecting bar, the U-shaped connecting bar comprises a transmission part and connecting parts vertically connected with two ends of the transmission part, the connecting part at one end is connected with the first operating mechanism or the second operating mechanism, and the connecting part at the other end is connected with the first ship-shaped handle or the second ship-shaped handle.
As an implementation manner, the first boat-shaped handle includes a first pressing portion extending out of the housing and a first extending portion located in the housing, and the connecting portion is connected to the first extending portion; the second boat-shaped handle comprises a second pressing part extending out of the shell and a second extending part located in the shell, and the connecting part is connected with the second extending part.
As an implementation mode, the protective electrode further comprises a short-circuit release arranged on one side of the first operating mechanism, the first fixed contact assembly comprises a coil wound on the short-circuit release and a fixed contact arranged on one side of the short-circuit release, and the short-circuit release pushes the first operating mechanism to open;
the neutral pole also comprises a leakage mutual inductor and a leakage release connected with the leakage mutual inductor in a signal mode, and the leakage release controls the second operating mechanism to be switched off according to a leakage signal of the leakage mutual inductor.
As an implementable mode, the protection pole further comprises an overload protector, one end of the overload protector is connected with the first output terminal, the other end of the overload protector extends to the middle of the first operating mechanism, and the overload protector is heated, bent and drives the first operating mechanism to be switched off.
As an implementable mode, the driving part drives the first operating mechanism to be switched on or switched off through the transmission part, the transmission part comprises a plurality of stages of gears which are mutually transmitted and a handle gear, the last stage of gear is coaxially and movably provided with a sector gear, the last stage of gear is also fixedly provided with a boss, the boss pushes the sector gear to rotate and drives the handle gear to rotate, and the handle gear is connected with the first ship-shaped handle through a linkage shaft so that the handle gear drives the first ship-shaped handle to be switched on.
As an implementation mode, the last stage gear is also fixedly provided with a cam, and the cam rotates along with the gear and drives the first operating mechanism to open.
As an implementable mode, a metering transformer is further arranged in the electric operation shell, and the first fixed contact component penetrates through the metering transformer to detect a current value on the first fixed contact component.
As an implementable mode, set up the circuit board between protection utmost point and the neutral utmost point, the neutral utmost point is still including electric leakage test mechanism, electric leakage test mechanism is including setting up first torsion spring on the circuit board, first stitch and second stitch, the one end and the first stitch of first torsion spring are connected, the other end under natural condition with set up the test button contact on first side, press test button and make the other end and the second stitch contact of first torsion spring, first stitch passes through resistance and is connected with first input terminal, the second stitch passes through the second moving contact and is connected with second output terminal.
As an implementable mode, a circuit board is arranged between the protective electrode and the neutral electrode, the circuit board is in signal connection with the circuit board, the residual current circuit breaker further comprises a signal output mechanism connected with the circuit board, the signal output mechanism comprises a signal port arranged on the circuit board, and a second torsion spring, a third pin and a fourth pin which are arranged on the circuit board, the signal port extends out of the electric operation shell, one end of the second torsion spring is connected with the third pin, the other end of the second torsion spring is in contact with the fourth pin in a natural state, and the second ship-shaped handle drives the second torsion spring to be separated from the fourth pin.
The beneficial effects of the embodiment of the application include:
the utility model provides a residual current circuit breaker, which comprises a rectangular shell, a first ship-shaped handle and a second ship-shaped handle, wherein the first ship-shaped handle and the second ship-shaped handle are arranged on a first side surface of the shell in parallel, the ship-shaped handles occupy smaller space, a protective pole and a neutral pole are arranged in parallel in the shell, the protective pole comprises a first operating mechanism and a first moving contact which are in transmission connection and a first static contact assembly, the neutral pole comprises a second operating mechanism and a second moving contact which are in transmission connection, the first ship-shaped handle drives the first moving contact to be separated from or switched on with the first fixed contact assembly through the first operating mechanism, and the second ship-shaped handle drives the second moving contact to be separated from or switched on with the second fixed contact assembly through the second operating mechanism; the four-bar linkage structure enables the operating mechanism to have a larger rotation angle when the ship-shaped handle rotates by a smaller rotation angle, and the requirement of the distance between the moving contact and the static contact is met, so that the size of the leakage circuit breaker is reduced; the input terminal and the input terminal are respectively arranged at two ends of the second side surface, so that the space in the shell is effectively utilized; the residual current circuit breaker further comprises an electric operation shell connected with the shell, a circuit board and a driving piece connected with the circuit board are arranged in the electric operation shell, and the driving piece drives the first operating mechanism to switch on or switch off. The electric leakage circuit breaker can enable the internal structure of the circuit breaker to be compact and reduce the volume of the electric leakage circuit breaker.
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 structural diagram of an electrical leakage breaker according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present disclosure;
fig. 3 is a second schematic diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present disclosure;
fig. 4 is a state diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present disclosure;
fig. 5 is a second internal structure diagram of the electrical leakage breaker according to the embodiment of the present application;
fig. 6 is a third schematic diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present disclosure;
fig. 7 is a third internal structure state diagram of an electrical leakage breaker according to an embodiment of the present invention;
fig. 8 is a schematic view of an internal structure of an electrical leakage breaker in another view angle according to an embodiment of the present application.
Icon: 100-earth leakage circuit breaker; 110-a housing; 120-a guard electrode; 121-a first boat handle; 1211 — a first pressing part; 1212-a first extension; 122-a first movable contact; 123-a first operating mechanism; 124-a first stationary contact assembly; 130-neutral pole; 131-a second boat-shaped handle; 1311 — a second pressing part; 1312-a second extension; 132-a second movable contact; 133-a second operating mechanism; 134-a second stationary contact assembly; 135-U shaped connecting rod; 141-a first input terminal; 142-a second input terminal; 143 — a first output terminal; 144-second output terminal; 150-electrically operated housing; 151-handle gear; 152-a drive member; 153-boss; 154-A gear; 155-sector gear; 156-a cam; 159-a metering transformer; 161-a circuit board; 162-a first torsion spring; 163-experiment button; 164-a first stitch; 165-second stitch; 169-signal port; 166 — a second torsion spring; 167-a third stitch; 168-fourth stitch; 171-handle brake opening position; 172-handle switch-on position; 173-electrically operated initial bit.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
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. Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
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; 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.
The handle above the existing circuit breaker is of a rocker type, and a large operation space is needed during movement. In addition, the circuit breaker adopts the screw wiring mostly, and the wiring position sets up at the both ends of circuit breaker, and the space that occupies is great for the whole volume of circuit breaker is great, can't install in the less distribution box of inner space.
The utility model provides an electric leakage circuit breaker 100, which is shown in figures 1, 2 and 3 and comprises a rectangular shell 110, a first boat-shaped handle 121 and a second boat-shaped handle 131 which are arranged on a first side surface of the shell 110 in parallel, a protective pole 120 and a neutral pole 130 are arranged in parallel in the shell 110, the protective pole 120 comprises a first operating mechanism 123 and a first movable contact 122 which are in transmission connection, the neutral pole 130 comprises a second operating mechanism 133, a second moving contact 132 and a second static contact assembly 134 which are in transmission connection, the first boat-shaped handle 121, the first operating mechanism 123, the second boat-shaped handle 131 and the second operating mechanism 133 are in transmission connection through a four-bar linkage structure respectively, the first boat-shaped handle 121 drives the first moving contact 122 to be separated from or closed to the first static contact assembly 124 through the first operating mechanism 123, and the second boat-shaped handle 131 drives the second moving contact 132 to be separated from or closed to the second static contact assembly 134 through the second operating mechanism 133; the two ends of the second side surface opposite to the first side surface are respectively provided with an input terminal and an output terminal, the input terminal comprises a first input terminal 141 and a second input terminal 142 which are arranged in parallel, the first input terminal 141 and the second input terminal 142 are respectively correspondingly connected with the first fixed contact assembly 124 and the second fixed contact assembly 134, the output terminal comprises a first output terminal 143 and a second output terminal 144 which are arranged in parallel, and the first output terminal 143 and the second output terminal 144 are respectively correspondingly connected with the first movable contact 122 and the second movable contact 132; the residual current circuit breaker 100 further includes an electrically operated housing 150 connected to the housing 110, a circuit board and a driving member 152 connected to the circuit board are disposed in the electrically operated housing 150, and the driving member 152 drives the first operating mechanism 123 and the second operating mechanism 133 to close or open.
The residual current circuit breaker 100 is used for controlling the disconnection between a power supply and a load, wherein an L pole of the power supply is connected with the first input terminal 141, the first input terminal 141 is connected with the first fixed contact assembly 124, when the residual current circuit breaker 100 is switched on, the first fixed contact assembly 124 is contacted with the first movable contact 122, the first movable contact 122 is connected with the first output terminal 143, and the first output terminal 143 is connected with the L pole of the load, so that the power supply, the first input terminal 141, the first fixed contact assembly 124, the first movable contact 122, the first output terminal 143 and the load form a first conductive loop;
the N pole of the power source is connected to the second input terminal 142, the second input terminal 142 is connected to the second fixed contact assembly 134, when the residual current circuit breaker 100 is switched on, the second fixed contact assembly 134 contacts the second movable contact 132, the second movable contact 132 is connected to the second output terminal 144, and the second output terminal 144 is connected to the N pole of the load, so that the power source, the second input terminal 142, the second fixed contact assembly 134, the second movable contact 132, the second output terminal 144, and the load form a second conductive loop; thereby causing the power supply to power the load.
The input terminal and the output terminal are respectively arranged at two ends of the second side surface, the first boat-shaped handle 121 and the second boat-shaped handle 131 are arranged on the first side surface, and the first side surface is opposite to the second side surface, so that the space inside the shell 110 can be fully utilized, the internal structure is compact, and the size of the residual current circuit breaker 100 is reduced.
In an implementation manner of the embodiment of the present invention, as shown in fig. 2, 3 and 8, the first input terminal 141, the second input terminal 142, the first output terminal 143 and the second output terminal 144 are all patch panels. Compared with screw wiring, the space occupied by the plug board is smaller, so that the size of the residual current circuit breaker 100 can be reduced, and the plug wire is simpler and more convenient to use and is easy to operate.
The utility model provides a residual current circuit breaker 100, which comprises a rectangular shell 110, a first ship-shaped handle 121 and a second ship-shaped handle 131, wherein the first ship-shaped handle 121 and the second ship-shaped handle 131 are arranged on a first side surface of the shell 110 in parallel, the ship-shaped handles occupy a small space, a protection pole 120 and a neutral pole 130 are arranged in parallel in the shell 110, the protection pole 120 comprises a first operating mechanism 123 and a first moving contact 122 which are in transmission connection and a first static contact assembly 124, the neutral pole 130 comprises a second operating mechanism 133 and a second moving contact 132 which are in transmission connection and a second static contact assembly 134, and the first ship-shaped handle 121, the first operating mechanism 123, the second ship-shaped handle 131 and the second operating mechanism 133 are in transmission connection through a four-bar structure respectively; the four-bar linkage structure enables the operating mechanism to have a larger rotation angle when the boat-shaped handle rotates by a smaller rotation angle, and the requirement of the distance between the moving contact and the fixed contact is met, so as to reduce the volume of the residual current circuit breaker 100, the two ends of the second side surface opposite to the first side surface are respectively provided with an input terminal and an output terminal, the input terminal comprises a first input terminal 141 and a second input terminal 142 which are arranged in parallel, the first input terminal 141 and the second input terminal 142 are respectively correspondingly connected with the first fixed contact component 124 and the second fixed contact component 134, the output terminal comprises a first output terminal 143 and a second output terminal 144 which are arranged in parallel, the first output terminal 143 and the second output terminal 144 are respectively correspondingly connected with the first moving contact 122 and the second moving contact 132, the input terminal and the output terminal are respectively arranged at the two ends of the second side surface, and the space at the corner of the shell 110 is effectively utilized, the residual current circuit breaker 100 further includes an electrically operated housing 150 connected to the housing 110, a circuit board and a driving member 152 connected to the circuit board are disposed in the electrically operated housing 150, and the driving member 152 drives the first operating mechanism 123 to close or open. The residual current circuit breaker 100 of the utility model can make the internal structure of the circuit breaker compact and reduce the volume of the residual current circuit breaker 100.
Optionally, as shown in fig. 2 and 3, the four-bar linkage includes a U-shaped link 135, the U-shaped link 135 includes a transmission portion and a connecting portion vertically connected to two ends of the transmission portion, the connecting portion at one end is connected to the first operating mechanism 123 or the second operating mechanism 133, and the connecting portion at the other end is connected to the first boat-shaped handle 121 or the second boat-shaped handle 131.
Specifically, the boat-shaped handle is connected with the operating mechanism through a U-shaped connecting rod 135, and a four-bar connection is formed between the boat-shaped handle and the operating mechanism, wherein a connecting line between a rotating shaft of the handle and a connecting portion (connected with the handle) serves as a first bar of the four-bar connection, a transmission portion serves as a second bar of the four-bar connection, a connecting line between a rotating shaft of the operating mechanism and another connecting portion (connected with the operating mechanism) serves as a third bar, a connecting line between the rotating shaft of the boat-shaped handle and the rotating shaft of the operating mechanism serves as a fourth bar to form a four-bar structure, and the four-bar structure enables the handle to rotate at a smaller rotation angle (15-60%)0) The normal on-off operation of the operating mechanism can be realized, and the distance between the moving contact and the fixed contact meets the design requirement of the leakage circuit breaker 100.
Since the first boat handle 121 and the first operating mechanism 123 are connected by a four-bar linkage structure and the second boat handle 131 and the second operating mechanism 133 are connected by a four-bar linkage structure, the handle means the first boat handle 121 or the second boat handle 131, and the operating mechanism means the first operating mechanism 123 or the second operating mechanism 133, so long as the handle corresponds to the operating mechanism.
In an implementable manner of the embodiment of the present invention, as shown in fig. 2 and 3, the first boat-shaped handle 121 includes a first pressing portion 1211 protruding out of the housing 110 and a first extending portion 1212 located in the housing 110, and the connecting portion is connected to the first extending portion 1212; the second boat-shaped handle 131 includes a second pressing portion 1311 protruding out of the housing 110 and a second extending portion 1312 located inside the housing 110, and the connecting portion is connected to the second extending portion 1312.
The first boat-shaped handle 121 includes a first pressing portion 1211, a rotation shaft is disposed at the center of the first pressing portion 1211, so that when an end portion of the first boat-shaped handle 121 is pressed, the first boat-shaped handle 121 can rotate, a middle portion of an upper surface of the first pressing portion 1211 is recessed to form a boat-shaped structure with a low middle portion and two high ends, a lower surface of the first pressing portion 1211 is fixedly connected with a first extending portion 1212, and the first extending portion 1212 is connected with a connecting portion of the U-shaped link 135, so that a first rod of the four-link structure has a reasonable length, and the first operating mechanism 123 rotates by a large angle. Similarly, the second boat-shaped handle 131 includes a second pressing portion 1311, a rotating shaft is disposed at the center of the second pressing portion 1311, so that when the end of the second boat-shaped handle 131 is pressed, the second boat-shaped handle 131 can rotate, the middle of the upper surface of the second pressing portion 1311 is recessed to form a boat-shaped structure with a low middle and two high ends, the lower surface of the second pressing portion 1311 is fixedly connected with a second extending portion 1312, and the second extending portion 1312 is connected with the connecting portion of the U-shaped link 135, so that the second lever of the four-link structure has a reasonable length, and the second operating mechanism 133 rotates by a large angle.
Optionally, as shown in fig. 2 and fig. 3, the protection electrode 120 further includes a short-circuit release disposed on one side of the first operating mechanism 123, the first fixed contact assembly 124 includes a coil wound on the short-circuit release and a fixed contact disposed on one side of the short-circuit release, and the short-circuit release drives the first operating mechanism 123 to open;
the neutral pole 130 further includes a leakage transformer and a leakage release in signal connection with the leakage transformer, and the leakage release controls the second operating mechanism 133 to open according to the leakage signal of the leakage transformer.
As shown in fig. 2, in the embodiment of the present invention, the short-circuit release is disposed on one side of the first boat-shaped handle 121 along the width direction of the rectangle, the first operating mechanism 123 is disposed on one side of the length direction of the rectangle, and the coil is wound around the periphery of the short-circuit release, so that when the current on the first fixed contact assembly 124 exceeds a preset value, the short-circuit release operates to push the first operating mechanism 123 to operate, and the first operating mechanism 123 operates to drive the first movable contact 122 to move in a direction away from the first fixed contact assembly 124, thereby implementing the short-circuit protection function of the residual-circuit breaker 100.
In order to implement the leakage protection function, as shown in fig. 3, in the embodiment of the present invention, a leakage release and a leakage transformer are sequentially disposed on one side of the second boat-shaped handle 131 along the width direction, the leakage release is in signal connection with the leakage transformer, the first fixed contact assembly 124 and the second fixed contact assembly 134 pass through the leakage transformer, when a leakage occurs in the circuit, values of currents flowing through the first fixed contact assembly 124 and the second fixed contact assembly 134 are different, so that the leakage transformer senses a leakage signal, thereby controlling the leakage circuit breaker 100 to operate, and pushing the second operating mechanism 133 to operate, and the second operating mechanism 133 operates to drive the second moving contact 132 to move in a direction away from the second fixed contact assembly 134, thereby implementing the leakage protection function of the leakage circuit breaker 100.
It should be noted that the signal connection between the leakage transformer and the leakage release is performed through the circuit board 161, the leakage transformer senses the leakage signal and transmits the signal to the circuit board 161, and the circuit board 161 controls the operation of the leakage release.
In an implementation manner of the embodiment of the present invention, the protection electrode 120 further includes an overload protector, one end of the overload protector is connected to the first output terminal 143, and the other end of the overload protector extends to the middle of the first operating mechanism 123, and the overload protector is heated and bent to drive the first operating mechanism 123 to open.
The first output terminal 143 is connected to the first operating mechanism 123 through the overload protector, and the first operating mechanism 123 is disposed between the housing 110 and the first operating mechanism 123, so that a space between the housing 110 and the first operating mechanism 123 is effectively used, thereby improving the reasonableness of the layout. After the overload protector is heated and bent, the first operating mechanism 123 is pushed to act, and the first operating mechanism 123 acts to drive the first moving contact 122 to move towards the direction far away from the first via contact assembly, so that the residual current circuit breaker 100 is opened, and the overload protection function of the residual current circuit breaker 100 is realized.
Optionally, as shown in fig. 6, the driving element 152 drives the first operating mechanism 123 to open and close the brake through a transmission element, the transmission element includes multiple stages of gears that are mutually driven and a handle gear 151, a sector gear 155 is coaxially and movably disposed on the last stage of gear, a boss 153 is further fixedly disposed on the last stage of gear, the boss 153 pushes the sector gear 155 to rotate and drives the handle gear 151 to rotate, and the handle gear 151 is connected with the first boat-shaped handle 121 through a linkage shaft, so that the handle gear 151 drives the first boat-shaped handle 121 to close the brake.
As shown in fig. 6, the driving member 152 is a motor, a worm is disposed on a rotating shaft of the motor, the motor rotates to drive the worm to rotate, the first-stage gear is engaged with the worm, the worm rotates to drive the first-stage gear to rotate, and the second-stage gear and the third-stage gear are sequentially driven to rotate, wherein a gear with the third-stage gear set as the largest gear is referred to as an a gear 154.
As shown in fig. 6, when the switch is closed, the a-gear 154 is located at the electric operation initial position 173, and the sector gear 155 is located at the handle switch-off position 171. Firstly, the motor starts to rotate positively to drive the multi-stage gear to rotate, the boss 153 on the A gear 154 pushes the sector gear 155 to rotate anticlockwise from the handle switching-off position 171 to the handle switching-on position 172 through the induction of the Hall element, and the sector gear 155 drives the handle gear 151 to rotate clockwise. The handle gear 151 drives the first boat-shaped handle 121 to rotate clockwise from the opening position to the closing position through the linkage shaft, so that closing of the first boat-shaped handle 121 of the circuit breaker is completed. After the closing is completed, the motor rotates reversely to drive the transmission member to rotate, and the boss 153 of the a gear 154 rotates clockwise and returns to the initial position 173 of the electric operation through the induction of the hall element.
In an implementation manner of the embodiment of the present invention, the last stage gear is further fixedly provided with a cam 156, and the cam 156 rotates with the gear and drives the first operating mechanism 123 to open the brake.
As shown in fig. 7, during opening, the a-gear 154 boss 153 is located at the electric operation initial position 173, and the sector gear 155 is located at the handle closing position 172. Firstly, the motor is started to rotate reversely to drive the multi-stage gear to rotate, the cam 156 on the gear A154 rotates clockwise to drive the first operating mechanism 123 to perform brake opening through the connecting rod, the first boat-shaped handle 121 drives the handle gear 151 to rotate anticlockwise through the linkage shaft in the brake opening process, and the handle gear 151 drives the sector gear 155 to rotate clockwise from the handle brake closing position 172 to the handle brake opening position 171 through Hall element induction. After closing, the motor rotates forward to drive the multi-stage gear to rotate, and the boss 153 of the gear a 154 rotates counterclockwise and returns to the initial position 173 of the electric operation through the induction of the hall element.
Optionally, as shown in fig. 6 and 7, a metering transformer 159 is further disposed in the electrically operated housing 150, and the first stationary contact assembly 124 passes through the metering transformer 159 to detect a current value on the first stationary contact assembly 124.
The metering transformer 159 measures and records the current passing through the first stationary contact assembly 124, the metering transformer 159 is connected to a circuit board, the circuit board is connected to the signal port 169, and the metering result is output to an external device through the signal port 169, and the arrangement of the metering transformer 159 enables the earth leakage breaker 100 to have a metering function at the same time.
It should be noted that the specific form of the metering transformer 159 is not limited, and the present invention may be a current transformer, or a shunt, as long as the metering function is achieved.
In an implementation manner of the embodiment of the present invention, a circuit board 161 is disposed between the protection pole 120 and the neutral pole 130, and a leakage test mechanism is further disposed in the neutral pole 130, the leakage test mechanism includes a first torsion spring 162, a first pin 164, and a second pin 165 disposed on the circuit board 161, one end of the first torsion spring 162 is connected to the first pin 164, the other end of the first torsion spring 162 is in contact with an experiment button 163 disposed on the first side surface in a natural state, pressing the experiment button makes the other end of the first torsion spring 162 in contact with the second pin 165, the first pin 164 is connected to the first input terminal 141 through a resistor, and the second pin 165 is connected to the second output terminal 144 through the second movable contact 132.
In practical applications, it is necessary to test at intervals whether the earth leakage circuit breaker 100 can be automatically opened in case of an electrical leakage to achieve the functions of protecting a load and a circuit, an earth leakage test circuit is disposed in the earth leakage circuit breaker 100, the earth leakage test circuit includes an experiment button 163 disposed on a first side of the housing 110 and on one side of the second boat-shaped handle 131, a first torsion spring 162 disposed on a side of the circuit board 161 facing the neutral pole 130, a first pin 164 and a second pin 165, the first pin 164 and the second pin 165 are electrically connected to the circuit board 161, a break point of the earth leakage test circuit is disposed between the first torsion spring 162 and the second pin 165, as shown in fig. 4, the experiment button 163 is pressed to make the other end of the first torsion spring 162 contact with the second pin 165, so that a part of the current in the protection pole 120 passes through the first input terminal 141, the resistor, the first pin 164, the first pin 165, the second pin 165, and the first input terminal 141, The first torsion spring 162, the second pin 165 and the second moving contact 132 flow to the second output terminal 144, so that the current values of the protection electrode 120 and the neutral electrode 130 are different, and therefore a leakage signal occurs, the circuit board 161 is connected with the leakage release to enable the leakage release to act under the action of the test signal, the leakage signal is artificially generated to detect whether the leakage protection function of the leakage circuit breaker 100 is normal, and the leakage circuit breaker 100 can be automatically opened to realize the leakage protection function when a leakage phenomenon occurs in a circuit.
It should be noted that, as shown in fig. 5, when the force for pressing the test button is removed after the test is finished, the first torsion spring 162 makes the test button 163 return to the original position due to the rebound of the elastic potential energy, so as to facilitate the next test.
Optionally, a circuit board 161 is disposed between the protection pole 120 and the neutral pole 130, the circuit board 161 is in signal connection with the circuit board, the electrical leakage breaker 100 further includes a signal output mechanism, the signal output mechanism includes a signal port 169 disposed on the circuit board, and a second torsion spring 166, a third pin 167 and a fourth pin 168 disposed on the circuit board 161, the signal port 169 extends out of the electrical operation housing 150, one end of the second torsion spring 166 is connected with the third pin 167, the other end of the second torsion spring is in contact with the fourth pin 168 in a natural state, and the second boat-shaped handle 131 drives the second torsion spring 166 to separate from the fourth pin 168.
The signal port 169 can transmit the switching-on/off signal on the circuit board 161 to an external device, so that the state of the residual current circuit breaker 100 is considerable, and the signal port 169 can be further provided with an address line for judging which residual current circuit breaker 100 the switching-on/off signal belongs to, because usually, a plurality of residual current circuit breakers 100 are arranged in the same cabinet, and the address line can enable an operator to easily identify the state of each residual current circuit breaker 100.
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 (10)
1. The residual current circuit breaker (100) is characterized by comprising a rectangular shell (110), a first ship-shaped handle (121) and a second ship-shaped handle (131) which are arranged on a first side face of the shell (110) in parallel, a protection pole (120) and a neutral pole (130) are arranged in the shell (110) in parallel, the protection pole (120) comprises a first operating mechanism (123) and a first moving contact (122) which are connected in a transmission mode and a first static contact assembly (124), the neutral pole (130) comprises a second operating mechanism (133) and a second moving contact (132) which are connected in a transmission mode and a second static contact assembly (134), the first ship-shaped handle (121) and the first operating mechanism (123) as well as the second ship-shaped handle (131) and the second operating mechanism (133) are connected in a transmission mode through a four-bar structure respectively, and the first ship-shaped handle (121) drives the first moving contact (122) through the first operating mechanism (123) ) The second boat-shaped handle (131) drives the second movable contact (132) to be opened or closed with the second fixed contact assembly (134) through the second operating mechanism (133); an input terminal and an output terminal are respectively arranged at two ends of a second side surface opposite to the first side surface, the input terminal comprises a first input terminal (141) and a second input terminal (142) which are arranged in parallel, the first input terminal (141) and the second input terminal (142) are respectively correspondingly connected with the first static contact assembly (124) and the second static contact assembly (134), the output terminal comprises a first output terminal (143) and a second output terminal (144) which are arranged in parallel, and the first output terminal (143) and the second output terminal (144) are respectively correspondingly connected with the first movable contact (122) and the second movable contact (132);
the electric control device is characterized by further comprising an electric control shell (150) connected with the shell (110), a circuit board and a driving piece (152) connected with the circuit board are arranged in the electric control shell (150), and the driving piece (152) drives the first operating mechanism (123) and the second operating mechanism (133) to be switched on or switched off.
2. The residual current circuit breaker (100) according to claim 1, characterized in that said four-bar linkage comprises a U-shaped link (135), said U-shaped link (135) comprising a transmission portion and connecting portions perpendicularly connected to both ends of said transmission portion, said connecting portion at one end being connected to said first operating mechanism (123) or second operating mechanism (133), and said connecting portion at the other end being connected to said first boat handle (121) or second boat handle (131).
3. The residual current circuit breaker (100) according to claim 2, characterized in that said first boat-shaped handle (121) comprises a first pressing portion (1211) protruding from said casing (110) and a first extension portion (1212) located inside said casing (110), said connecting portion being connected with said first extension portion (1212); the second boat-shaped handle (131) comprises a second pressing part (1311) extending out of the shell (110) and a second extending part (1312) located in the shell (110), and the connecting part is connected with the second extending part (1312).
4. The residual current circuit breaker (100) according to claim 1, wherein the protection pole (120) further comprises a short circuit release disposed on a side of the first operating mechanism (123), the first stationary contact assembly (124) comprises a coil wound on the short circuit release and a stationary contact disposed on a side of the short circuit release, and the short circuit release pushes the first operating mechanism (123) to open;
the neutral pole (130) further comprises a leakage mutual inductor and a leakage release connected with the leakage mutual inductor in a signal mode, and the leakage release controls the second operating mechanism (133) to be switched off according to a leakage signal of the leakage mutual inductor.
5. The residual current circuit breaker (100) according to claim 1, wherein said protection pole (120) further comprises an overload protector, one end of said overload protector is connected to said first output terminal (143), the other end of said overload protector extends to the middle of said first operating mechanism (123), said overload protector is heated and bends and drives said first operating mechanism (123) to open.
6. The residual current circuit breaker (100) according to claim 1, wherein the driving member (152) drives the first operating mechanism (123) to close or open the brake through a transmission member, the transmission member includes a plurality of stages of gears mutually driven and a handle gear (151), a sector gear (155) is coaxially and movably disposed on the gear of the last stage, a boss (154) is further fixedly disposed on the gear of the last stage, the boss (154) pushes the sector gear (155) to rotate and drives the handle gear (151) to rotate, and the handle gear (151) is connected with the first boat-shaped handle (121) through a linkage shaft, so that the handle gear (151) drives the first boat-shaped handle (121) to close the brake.
7. The residual current circuit breaker (100) as claimed in claim 6, wherein a cam (156) is further fixedly arranged on the last stage of the gear, and the cam (156) rotates along with the gear and drives the first operating mechanism (123) to open.
8. The residual current circuit breaker (100) according to claim 1, characterized in that a metering transformer (159) is further arranged inside said electrically operated casing (150), said first stationary contact assembly (124) passing through said metering transformer (159) to detect the value of the current on said first stationary contact assembly (124).
9. Residual current circuit breaker (100) according to claim 1, characterized in that a circuit board (161) is arranged between the protection pole (120) and the neutral pole (130), the neutral pole (130) further comprises an electrical leakage testing mechanism comprising a first torsion spring (162), a first pin (164) and a second pin (165) arranged on the circuit board (161), one end of the first torsion spring (162) is connected with the first pin (164), and the other end thereof is naturally in contact with a test button provided on the first side surface, pressing the test button causes the other end of the first torsion spring (162) to be in contact with the second pin (165), the first pin (164) is connected to the first input terminal (141) via a resistor, the second pin (165) is connected with the second output terminal (144) through the second movable contact (132).
10. Residual current circuit breaker (100) according to claim 1, characterized in that a circuit board (161) is arranged between the protection pole (120) and the neutral pole (130), the circuit board (161) is in signal connection with the circuit board, the residual current circuit breaker (100) also comprises a signal output mechanism, the signal output mechanism comprises a signal port (169) arranged on the circuit board, and a second torsion spring (166), a third pin (167) and a fourth pin (168) arranged on the circuit board (161), the signal port (169) extends out through the electric operating shell (150), one end of the second torsion spring (166) is connected with the third pin (167), and the other end is contacted with the third pin (167) under the natural state, the second boat handle (131) drives the second torsion spring (166) to disengage from the fourth pin (168).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123339269.7U CN216902749U (en) | 2021-12-27 | 2021-12-27 | Leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123339269.7U CN216902749U (en) | 2021-12-27 | 2021-12-27 | Leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216902749U true CN216902749U (en) | 2022-07-05 |
Family
ID=82209038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123339269.7U Active CN216902749U (en) | 2021-12-27 | 2021-12-27 | Leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216902749U (en) |
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2021
- 2021-12-27 CN CN202123339269.7U patent/CN216902749U/en active Active
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