CN214378310U - Earth leakage circuit breaker - Google Patents

Abstract

The utility model relates to a residual current circuit breaker, it includes casing, handle, leading-out terminal, inlet wire end, instruction button, electromagnetic system, L utmost point arc-extinguish chamber and electric leakage circuit board, still includes: an L-pole operating mechanism and an N-pole operating mechanism arranged in the shell; the power taking mechanism is used for supplying power between a magnetic yoke on the electromagnetic system and the leakage circuit board and comprises a control piece which is arranged on the handle and used for controlling the on-off of the magnetic yoke and the leakage circuit board; the tripping device comprises a tripping mechanism and a tripping rod, wherein the tripping mechanism comprises a voltage tripper and a tripping rod which is rotatably arranged in a shell, a mandril on the voltage tripper pushes the tripping rod to move so as to drive a linkage piece on an operating piece to move, and the tripping rod is also provided with an elastic piece which is used for driving the tripping rod to rotate towards the direction of the linkage piece and driving an indicating button to move upwards; n utmost point arc control device. The utility model discloses have and to N utmost point arc extinguishing, the arc extinguishing is effectual, and the effect of dropout is better, and during the circuit breaker disconnection, the load end can not have the effect of the sensation of electric shock.

Description

Earth leakage circuit breaker

Technical Field

The utility model relates to a technical field of circuit breaker, concretely relates to residual current circuit breaker.

Background

The leakage breaker is a switch which can automatically act when the leakage current exceeds a preset value in a circuit, and can connect, bear and break the current under the normal circuit condition, and can also connect, bear and break the current for a certain time under the specified abnormal condition (such as overload, short circuit and the like). The cable is widely applied to various levels of outgoing lines and terminal systems of power distribution systems in the fields of industry, building, water conservancy and hydropower and the like.

The circuit breaker mainly comprises a shell, a handle, an operating mechanism, a contact system, a zero sequence current transformer, a leakage test tripping mechanism and an arc extinguishing system. The movable contact and the fixed contact in the contact system are driven to move by the handle, so that the circuit breaker is switched on and off, the electric circuit is controlled, and the electric circuit is protected when faults such as overload, short circuit and the like occur by sensing the current heat effect and the magnetic effect. When the moving contact and the static contact are contacted and have enough contact pressure, the miniature circuit breaker is connected with an electric loop, and the current of the loop system is judged by sensing the local temperature change of the miniature circuit breaker through the bimetallic element, so that the overcurrent protection function is realized. When the loop current is kept at the rated current value set by the miniature circuit breaker and below, the heat effect generated by the current causes the metal element to generate small deformation, and the release cannot be released; when the loop current exceeds the set rated current, the temperature of the metal element of the miniature circuit breaker rises, enough thermal deformation can be generated, the release is pushed to be tripped, at the moment, the movable contact and the fixed contact in the contact system are separated, the current loop is cut off, and the current protection function is realized.

The function of the arc extinguishing system is to realize the trend of continuously increasing the limiting current, namely the current limiting function, and finally extinguish the arc through the function of the arc when the miniature circuit breaker breaks the overlarge short-circuit current. When electric arc is introduced into the arc extinguish chamber, the metal grid sheet in the arc extinguish chamber is divided into a plurality of sections, and each section of electric arc generates a near-pole voltage near the metal grid sheet, so that the voltage drop of the whole electric arc is rapidly improved, and the electric arc is extinguished.

The existing circuit breaker, the direct and load end of circuit board passes through the pin connection, let the induced voltage that zero line exists among the circuit system and the release voltage stack of components and parts such as electric capacity on the PCB board, when leading to touching the circuit breaker load end of separating brake, there is certain electric shock sensation, thereby the mistake deems that the switch is not in good off-state, the dropout also directly trips through voltage release simultaneously, voltage coil receives the voltage fluctuation relevant, consequently, the driving force that the iron core magnetization produced, the power value also can fluctuate, the power value that produces when lower voltage is less, thereby can lead to the dropout effect not good, the arc extinguishing of the N utmost point also directly adopts the mode of "earlier with the back branch" to reduce electric arc simultaneously at the same time, solve above-mentioned all problems simultaneously at present, there is not open technical scheme.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in solving the unable while among the prior art solution N utmost point arc extinguishing, the dropout effect is not good and the circuit board is direct to be connected with the load end, and touch load end has the electric shock sensation, thinks the defect that the switch does not break off by mistake to a leakage circuit breaker is provided.

The utility model provides a residual current circuit breaker, includes casing, handle, leading-out terminal, inlet wire end, indicates button, electromagnetic system, L utmost point arc-extinguishing chamber and electric leakage circuit board, still includes:

the L-pole operating mechanism and the N-pole operating mechanism are arranged in the shell, and an operating piece is arranged between the L-pole operating mechanism and the N-pole operating mechanism;

the power taking mechanism is used for supplying power between a magnetic yoke on the electromagnetic system and the leakage circuit board and comprises a control piece which is arranged on the handle and used for controlling the on-off of the magnetic yoke and the leakage circuit board;

the tripping mechanism is used for separating a moving contact and a fixed contact on the N-pole operating mechanism, the tripping mechanism comprises a voltage tripper and a tripping rod rotationally arranged in the shell, an ejector rod on the voltage tripper pushes the tripping rod to move so as to drive a linkage piece on the operating piece to move, and the tripping rod is also provided with an elastic piece used for driving the tripping rod to rotate towards the direction of the linkage piece and driving the indicating button to move upwards;

and the N-pole arc extinguishing device is arranged below the N-pole operating mechanism and is used for extinguishing the arc generated by the N-pole operating mechanism.

Furthermore, the control piece comprises a push rod which is arranged inside the shell and connected with the handle, a contact spring is arranged in the shell, one end of the contact spring is located between the magnetic yoke and the push rod and is in a suspended state, the other end of the contact spring is in contact with the electric leakage circuit board, and the handle rotates to drive the push rod to be in contact with the contact spring and enable the contact spring to be in contact with the magnetic yoke.

Further, be provided with experimental spring between electric leakage circuit board and the contact spring, experimental spring one end is connected on the electric leakage circuit board, and the other end overlap joint is on the contact spring.

Furthermore, the elastic component includes an indication button spring arranged in the shell, the trip bar has three extending ends, one of the extending ends is located between an ejector rod of the voltage release and the linkage component, the indication button spring has a biasing force for driving the extending end of the trip bar located between the ejector rod and the linkage component to rotate in the direction of the linkage component, the indication button spring is located below the indication button and is in contact with the indication button, the trip bar is provided with a trip bar spring, the trip bar spring has a biasing force for driving the extending end of the trip bar located between the ejector rod and the linkage component to rotate in the direction of the ejector rod, the trip bar is provided with a locking component between the extending end close to the indication button and the indication button, and when the indication button is pressed down, the locking component locks the trip bar.

Furthermore, the locking piece comprises a supporting block arranged at the bottom of the indicating button, a locking groove is formed in the extending end, facing the supporting block, of the tripping rod, and when the indicating button is pressed down, the supporting block moves into the locking groove and tightly supports against the inner wall of the locking groove.

Furthermore, the indication button spring is provided with a first torsion arm and a second torsion arm, the first torsion arm is connected with the shell, a push rod is arranged at the extending end of the trip bar, the second torsion arm is arranged towards the direction of the push rod and bent to hook on the push rod, and the side wall of the second torsion arm is contacted with the bottom of the indication button.

Furthermore, the N-pole operating mechanism comprises a contact supporting piece rotatably arranged on the inner wall of the shell, a moving contact arranged on the contact supporting piece and a mechanism spring connected with the contact supporting piece, and the shell encloses an installation space; the moving contact is arranged corresponding to the fixed contact in the installation space, and the contact support piece is bent towards the installation space far away from the inner wall of the shell to form a free end; the moving contact is fixed on the free end, the installation space between the contact support and the shell is used for installing a tripping mechanism, and the tripping mechanism and the N-pole operating mechanism are arranged in parallel.

Furthermore, the N-pole arc extinguishing device comprises an N-pole arc extinguishing chamber, the N-pole arc extinguishing chamber is arranged in an installation space below a moving contact of the N-pole operating mechanism of the leakage circuit breaker, two arc baffles used for guiding electric arcs generated by the moving contact and a static contact are arranged between the N-pole arc extinguishing chamber and the moving contact, and an arc striking channel is formed between the two arc baffles.

Furthermore, the operating part comprises a linkage plate fixed on the L-pole operating mechanism, a linkage shaft is arranged on the linkage plate, the contact support part rotates through the linkage shaft, and the linkage part is arranged on the linkage plate.

Further, be provided with the base with casing parallel arrangement in the casing, the base is with tripping device and N utmost point operating device's separation, tripping device all sets up on the base with getting the electric mechanism.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a leakage circuit breaker, including casing, handle, leading-out terminal, inlet wire end, instruction button, electromagnetic system, L utmost point arc-extinguish chamber and electric leakage circuit board, still include L utmost point operating device and the N utmost point operating device who sets up in the casing, be provided with the operating parts between L utmost point operating device and the N utmost point operating device; the power taking mechanism is used for supplying power between a magnetic yoke on the electromagnetic system and the leakage circuit board and comprises a control piece which is arranged on the handle and used for controlling the on-off of the magnetic yoke and the leakage circuit board; the tripping mechanism is used for separating a moving contact and a fixed contact on the N-pole operating mechanism, the tripping mechanism comprises a voltage tripper and a tripping rod rotationally arranged in the shell, an ejector rod on the voltage tripper pushes the tripping rod to move so as to drive a linkage piece on the operating piece to move, and the tripping rod is also provided with an elastic piece used for driving the tripping rod to rotate towards the direction of the linkage piece and driving the indicating button to move upwards; the N-pole arc extinguishing device is arranged below the N-pole operating mechanism and is used for extinguishing the arc generated by the N-pole operating mechanism, when the handle rotates in the use process of the residual current circuit breaker, the movable contact and the static contact in the L-pole operating mechanism are also connected, the electromagnetic system is in a power-on state at the moment, the control piece rotates along with the handle at the moment, thereby realizing the communication between the magnet yoke and the leakage circuit board, at the moment, the electricity on the electromagnetic system can be transmitted to the leakage circuit board, thereby realizing the power supply of the L pole, when the L pole operating mechanism is disconnected, the control piece disconnects the electromagnetic system and the leakage circuit board, therefore, the circuit board is not electrified, so that the current can not be transmitted to the load end, the induced voltage can not be transmitted to the load end, when the load end of the opening circuit breaker is contacted, the switch does not feel electric shock, and the switch is not in a good disconnection state. When there is the leakage signal, electromagnetic system produces magnetic field when having voltage this moment, magnetization quiet iron core produces suction, let move the ejector pin motion that the iron core drove on the electromagnetic system, thereby promote the trip bar motion, the trip bar promotes the linkage piece and removes, simultaneously the elastic component begins to work, thereby make the trip bar receive the thrust stack of ejector pin and elastic component simultaneously, thereby make the dropout effect of trip bar better, set up N utmost point arc extinguishing device under N utmost point operating device, thereby reduce the electric arc of N utmost point through extra arc extinguishing device, prevent that electric arc from burning N utmost point operating device, improve leakage circuit breaker's life.

2. The utility model provides a leakage circuit breaker, the control piece includes the push rod that sets up inside the casing and be connected with the handle, be provided with contact spring in the casing, contact spring one end is located between yoke and the push rod and is in unsettled state, the contact spring other end and the contact of electric leakage circuit board, the handle rotates drive push rod and contact spring contact and make contact spring and yoke contact, when rotating the handle, when the handle is closed at this moment, the L utmost point movable and static contact of circuit breaker just switched on, voltage coil is in the circular telegram state at this moment, when rotating the handle simultaneously, the push rod on the handle also can rotate along with the handle, thereby make handle and contact spring contact, and continue to promote the handle, thereby make the push rod drive contact spring and remove, and the yoke of contact spring and electromagnetic system is contradicted, and the electricity on the electromagnetic system will pass through the yoke and transmit to the contact spring at this moment, transmit the circuit board through the contact spring on, thereby realize getting the point of L utmost point, when the sound contact disconnection, the handle resumes the original condition this moment, thereby make push rod on the handle not contact with the contact spring, the contact spring is in unsettled state, thereby just there is not the electrical contact, the circuit board just also does not have the electricity, like this the electric current just can not transmit the load end, induced voltage just can not transmit the load end yet, when contacting the load end of separating brake circuit breaker, just can not have the sensation of electrocuteeing, can not think by mistake the switch not be in good off-state.

3. The utility model provides a residual current circuit breaker, be provided with experimental spring between electric leakage circuit board and the contact spring, experimental spring one end is connected on the electric leakage circuit board, other end overlap joint is on contact spring, when the manpower drives the handle and rotates, the handle drives the push rod and rotates this moment, thereby the push rod rotates and contact spring contact, after the contact spring contact, the push rod continues to remove until contact spring and yoke contact, the electricity that the sound contact switch-on produced this moment will transmit contact spring through the yoke on, contact spring and experimental spring contact, thereby transmit the electric current to experimental spring on, experimental spring and electric leakage circuit board contact, thereby electricity is through on experimental spring transmits the electric leakage circuit board, realize the electricity of the L utmost point.

4. The utility model provides a leakage circuit breaker, the elastic component includes the instruction button spring that sets up in the casing, the trip bar has three and stretches out the end, one of them stretch out the end and be located between the ejector pin and the linkage of voltage release, the instruction button spring has and orders about the end orientation that stretches out that the trip bar is located between ejector pin and the linkage the pivoted biasing force of linkage direction, the instruction button spring is located the below of instruction button and contacts with the instruction button, be provided with the trip bar spring on the trip bar, the trip bar spring has and orders about the end orientation pivoted biasing force of stretching out that the trip bar is located between ejector pin and the linkage, the trip bar is close to the end that stretches out that the instruction button was located and is provided with the dead piece of lock between the instruction button, when the instruction button pushes down, the dead piece of lock will trip bar lock, when the indication button is pressed downwards under the assistance of external force, the tripping rod is stressed by the clockwise force of the spring of the tripping rod, so that the extending end of the lower end of the tripping rod moves towards the direction of the mandril, the locking piece at the extending end of the upper end part of the tripping rod is in a locking state with the indication button, the clockwise force of the tripping rod is balanced with the torsion force of the spring of the indication button, the upward force of the indication button is stored, when the unlocking is started, the mandril of the voltage release starts to move rightwards and is abutted against the extending end of the lower end part of the tripping rod, the upper end part of the tripping rod and the indication button start to unlock at the moment, until all the locking pieces between the tripping rod and the indication button are unlocked, the torsion force of the spring of the indication button is completely released at the moment, the indication button and the tripping rod are driven to move, and the tripping rod is simultaneously stressed and superposed by the torsion force of the spring of the indication button and the mandril rightwards, therefore, the tripping rod drives the linkage piece to move, the tripping rod is not required to be directly pushed to directly trip through the ejector rod of the voltage tripper, the circuit breaker is enabled to trip quickly by accelerating the unlocking speed of the tripping rod driving the linkage piece, the main circuit of the power supply is disconnected, the burning loss of a voltage coil of the leakage tripper is protected, and the tripping effect of the circuit breaker is enabled to be better.

5. The utility model provides a leakage circuit breaker, the piece of locking is including setting up the piece of supporting in the instruction button bottom, the trip bar orientation support stretching out of piece department and serve and seted up the dead slot of lock, when instruction button pushes down, support the piece and remove the dead slot in the lock and with the dead inslot wall of lock supports tightly, when tripping device is in original condition, instructs the button to receive external force to assist and presses down to make the piece of supporting of instruction button below go deep into the dead slot of lock and support tightly with the dead slot inner wall and combine together, thereby make the trip bar be in the dead state of lock, when needs dropout, the ejector pin promotes the trip bar and removes this moment, thereby make support the piece from the dead slot roll-off of lock, thereby make trip bar and instruction button unblock, make the instruction button spring can accelerate and drive the trip bar and remove.

6. The utility model provides a leakage breaker, the indicating button spring is provided with a first torsion arm and a second torsion arm, the first torsion arm is connected with the shell, a push rod is arranged at the extending end of the trip bar, the second torsion arm is arranged towards the push rod and is bent and hooked on the push rod, the side wall of the second torsion arm is contacted with the bottom of the indicating button, the second torsion arm of the indicating button spring is bent and hooked on the push rod, since the indicating button spring has a biasing force urging the push rod and the trip lever in the counterclockwise direction, thereby the indication button spring can drive the trip bar to rotate anticlockwise, the extending end of the trip bar drives the linkage piece to move, and the second torsion arm of the indicating button spring is contacted with the bottom of the indicating button, so that the indicating button can move upwards when the second torsion arm rotates.

7. The utility model provides a leakage circuit breaker, the N pole operating mechanism comprises a contact supporting piece which is rotatablely arranged on the inner wall of the shell, a moving contact which is arranged on the contact supporting piece and a mechanism spring which is connected with the contact supporting piece, and the shell encloses an installation space; the moving contact is arranged corresponding to the fixed contact in the installation space, and the contact support piece is bent towards the installation space far away from the inner wall of the shell to form a free end; the moving contact is fixed on the free end, the installation space between the contact support and the shell is used for installing the tripping mechanism, the tripping mechanism and the N-pole operating mechanism are arranged side by side, when the moving contact is used, the moving contact is arranged at the bent free end, so that when the moving contact and the fixed contact are closed, the moving contact is in the middle position, electric arcs generated by the moving contact and the fixed contact are led into the N-pole arc extinguishing device in the middle to extinguish the arc, the arc extinguishing effect is better, meanwhile, the installation space is enclosed between the contact support and the shell, the tripping mechanism is convenient to install in the installation space, the electric leakage test tripping mechanism and the N-pole contact part are arranged side by side, the space utilization rate of the electric leakage breaker is improved, the structure of the electric leakage breaker is compact, and the cost is saved.

8. The utility model provides a leakage circuit breaker, N utmost point arc control device includes the N utmost point explosion chamber, the setting of N utmost point explosion chamber is in the installation space of the moving contact below of leakage circuit breaker N utmost point operating device, be provided with between N utmost point explosion chamber and the moving contact and be used for carrying out two arc baffles that guide to the electric arc that moving contact and static contact produced, two form the striking passageway between the arc baffle, the N utmost point explosion chamber can carry out the arc extinguishing to the electric arc that moving contact and static contact closed production on the N utmost point operating device when using, and the arc baffle can form the striking passageway simultaneously to concentrate to lead into in the N utmost point explosion chamber to the electric arc that produces moving contact and static contact, carry out the arc extinguishing.

9. The utility model provides a leakage circuit breaker, the operating parts is including fixing the gangboard on the L utmost point operating device, be provided with the universal driving shaft on the gangboard, contact supporting member passes through the universal driving shaft and rotates, the linkage sets up on the gangboard, through the setting of gangboard, when the handle drives the rotation of the L utmost point operating device, the gangboard rotates along with the L utmost point operating device this moment to make the universal driving shaft rotate, the universal driving shaft rotates, thereby drive contact supporting member and rotate, thereby contact supporting member rotates and drives moving contact and static contact closure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an external structure of the residual current circuit breaker of the present invention;

fig. 2 is a schematic view of the internal structure of the residual current circuit breaker of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an internal schematic view for embodying a trip mechanism in the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 4;

fig. 6 is an internal schematic view of the N-pole operating mechanism according to the present invention.

Description of reference numerals:

1. a housing; 2. a handle; 3. a wire outlet end; 4. a wire inlet end; 5. an indication button; 6. an electromagnetic system; 7. an L-pole arc extinguishing chamber; 8. a circuit board; 9. an L-pole operating mechanism; 10. an N-pole operating mechanism; 101. a contact support; 102. a moving contact; 103. a mechanism spring; 104. static contact; 11. a magnetic yoke; 12. a control member; 121. a push rod; 122. a contact spring; 123. testing the spring; 13. a tripping mechanism; 131. a voltage release; 132. a top rod; 133. a trip bar; 134. an elastic member; 1341; an indicating spring button; 1342. a trip lever spring; 1343. a deadlocking member; 13431. a resisting block; 13432. a locking groove; 14. a first torsion arm; 15. a second torsion arm; 16. a push rod; 17. an N-pole arc extinguish chamber; 18. an operating member; 181. a linkage plate; 182. a linkage shaft; 183. a linkage 19, a base; 20 connecting holes; 21. a connecting rod; 22. a stopper block; 23. an arc baffle plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

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

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

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

Referring to fig. 1 to 6, the present invention provides a residual current circuit breaker, which includes a housing 1, a handle 2, a wire outlet end 3, a wire inlet end 4, an indication button 5, an electromagnetic system 6, an L-pole arc-extinguishing chamber 7, a leakage circuit board 8, an L-pole operating mechanism 9 and an N-pole operating mechanism 10 disposed in the housing 1, wherein an operating part 18 is disposed between the L-pole operating mechanism 9 and the N-pole operating mechanism 10; the electricity taking mechanism is used for supplying electricity between a magnetic yoke 11 on the electromagnetic system 6 and the electric leakage circuit board 8, and comprises a control piece 12 which is arranged on the handle 2 and is used for controlling the on-off between the magnetic yoke 11 and the electric leakage circuit board 8; the tripping mechanism 13 is used for disconnecting the moving contact 102 and the fixed contact 104 on the N-pole operating mechanism 10, the tripping mechanism 13 includes a voltage release 131 and a tripping rod 133 rotatably disposed in the housing 1, a top rod 132 on the voltage release 131 pushes the tripping rod 133 to move so as to drive a linkage 183 on the operating element 18 to move, and the tripping rod 133 is further provided with an elastic member 134 for driving the tripping rod 133 to rotate towards the linkage 183 and driving the indication button 5 to move upwards; and the N-pole arc extinguishing device is arranged below the N-pole operating mechanism 10 and is used for extinguishing the arc generated by the N-pole operating mechanism 10.

In the use of electric leakage circuit breaker, when handle 2 rotates, thereby the sound contact in the L utmost point operating device 9 has also just been put through in the time of can, electromagnetic system 6 is in the on-state this moment, control 12 is along with the rotation of handle 2 this moment, thereby realize the intercommunication between yoke 11 and the electric leakage circuit board 8, electricity on the electromagnetic system 6 can transmit on the electric leakage circuit board 8 this moment, thereby realize the electricity of the L utmost point, when the disconnection of L utmost point operating device 9, control 12 makes and breaks off between electromagnetic system 6 and the electric leakage circuit board 8, thereby circuit board 8 just also does not have the electricity, like this the electric current just can not transmit the load end, induced voltage just can not transmit the load end yet, when contacting the load end of separating brake circuit breaker, just can not have the sensation of electrocuteeing, can not think by mistake the switch and not be in good off-state. When there is the electric leakage signal, electromagnetic system 6 produces magnetic field when having voltage this moment, magnetization quiet iron core produces suction, let the movable core drive the ejector pin 132 motion on the electromagnetic system 6, thereby promote the trip bar 133 motion, trip bar 133 promotes linkage 183 and removes, simultaneously elastic component 134 begins to work, thereby make trip bar 133 receive the thrust stack of ejector pin 132 and elastic component 134 simultaneously, thereby make the dropout effect of trip bar 133 better, set up N utmost point arc control device under N utmost point operating device 10, thereby reduce the electric arc of N utmost point through extra arc control device, prevent that electric arc from burning N utmost point operating device 10, improve electric leakage circuit breaker's life.

A base 19 arranged in parallel with the shell 1 is arranged in the shell 1, the tripping mechanism 13 and the N-pole operating mechanism 10 are separated by the base 19, and the tripping mechanism 13 and the power taking mechanism are both arranged on the base 19.

The electricity taking mechanism comprises a push rod 121 arranged inside a shell 1 and connected with a handle 2, a magnet yoke 11 is arranged on an electromagnetic system 6, a contact spring 122 is arranged in the shell 1, one end of the contact spring 122 is located between the magnet yoke 11 and the push rod 121 and is in a suspended state, the other end of the contact spring 122 is in contact with a leakage circuit board 8, and the handle 2 rotates to drive the push rod 121 to be in contact with the contact spring 122 and enables the contact spring 122 to be in contact with the magnet yoke 11. When turning handle 2, when handle 2 closed a floodgate this moment, the L utmost point of circuit breaker moved the static contact and just switched on, voltage coil is in the on-state this moment, when turning handle 2 simultaneously, push rod 121 on the handle 2 also can be along with handle 2 rotates, thereby make handle 2 and contact spring 122 contact, and continue to promote handle 2, thereby make push rod 121 drive contact spring 122 and remove, conflict until contact spring 122 and electromagnetic system 6's yoke 11, electricity on the electromagnetic system 6 will transmit on contact spring 122 through yoke 11 this moment, transmit on circuit board 8 through contact spring 122, thereby realize getting some of the L utmost point. When the sound contact breaks off, handle 2 resumes to original state this moment to make push rod 121 on the handle 2 not contact with contact spring 122, contact spring 122 is in unsettled state, thereby just there is not the electrical contact, circuit board 8 also does not have the electricity yet, like this the electric current just can not transmit the load end, induced voltage just also can not transmit the load end, when contacting the load end of separating brake circuit breaker, just can not have the sensation of electrocution, can not think by mistake that the switch is not in good off-state.

Be provided with experimental spring 123 between electric leakage circuit board 8 and the contact spring 122, experimental spring 123 one end is connected on electric leakage circuit board 8, the other end overlap joint is on contact spring 122, when the manpower drives handle 2 and rotates, handle 2 drives push rod 121 and rotates this moment, thereby push rod 121 rotates and contact with contact spring 122, contact spring 122 contacts the back, push rod 121 continues to remove until contact spring 122 and yoke 11 contact, the electricity that the movable and stationary contact switch-on produced will transmit to contact spring 122 through yoke 11 this moment on, contact spring 122 and experimental spring 123 contact, thereby transmit the electric current on experimental spring 123, experimental spring 123 and electric leakage circuit board 8 contact, thereby electricity transmits to electric leakage circuit board 8 through experimental spring 123 on, realize the electric power of the L utmost point.

The handle 2 is provided with a connecting hole 20, the connecting hole 20 is provided with a connecting rod 21, one end of the connecting rod 21, which is back to the handle 2, is connected with the L-pole contact supporting piece 101 of the circuit breaker, and the connecting rod 21 is arranged, so that when the handle 2 is rotated to be switched on, the connecting rod 21 can drive the L-pole operating mechanism 9 to rotate, and movable and static contacts on the L-pole operating mechanism 9 are switched on to be electrified.

The elastic member 134 includes an indication button spring 1341 disposed in the housing 1, the trip bar 133 has three protruding ends, one of the protruding ends is located between the top bar 132 of the voltage release 131 and the linkage 183, the indication button spring 1341 has a biasing force for rotating the protruding end of the trip bar 133 located between the top bar 132 and the linkage 183 toward the linkage 183, the indication button spring 1341 is located below the indication button 5 and contacts the indication button 5, a trip bar spring 1342 is disposed on the trip bar 133, the trip bar spring 1342 has a biasing force for rotating the protruding end of the trip bar 133 located between the top bar 132 and the linkage 183 toward the top bar 132, and a dead-locking member 1343 is disposed between the protruding end of the trip bar 133 located near the indication button 5 and the indication button 5.

When the indication button 5 is pressed down, the locking piece 1343 locks the trip bar 133, when the indication button 5 is pressed down by the aid of external force, the trip bar 133 is forced clockwise by the trip bar spring 1342, so that the extending end of the lower end of the trip bar 133 moves towards the push rod 132, the locking piece 1343 at the extending end of the upper end of the trip bar 133 is in a locking state with the indication button 5, the clockwise force of the trip bar 133 and the torsion of the indication button spring 1341 are balanced, and the upward force of the indication button 5 is stored. When the unlocking is started, the plunger 132 of the voltage release 131 starts to move to the right, and thus, abuts against the protruding end of the lower end portion of the trip lever 133, at which time the upper end portion of the trip lever 133 and the indication button 5 start to be unlocked, until the deadlocking piece 1343 between the trip lever 133 and the indication button 5 is completely unlocked, at which time the torsion force of the indication button spring 1341 is completely released, thereby driving the indication button 5 and the trip rod 133 to move, the trip rod 133 is simultaneously overlapped by the torsion of the indication button spring 1341 and the rightward thrust of the top rod 132, thereby the trip bar 133 drives the linkage 183 to move, the trip bar 133 is not required to be directly pushed to directly trip through the top rod 132 of the voltage trip 131, therefore, the speed of the trip rod 133 driving the linkage 183 to unlock is accelerated, so that the circuit breaker trips quickly, the main circuit of the power supply is disconnected, the burning loss of the voltage coil of the leakage tripping device is protected, and the tripping effect of the circuit breaker is better.

Specifically, the locking piece 1343 includes a resisting block 13431 disposed at the bottom of the indication button 5, an extending end of the trip bar 133 facing the resisting block 13431 is provided with a locking groove 13432, and when the indication button 5 is pressed down, the resisting block 13431 moves into the locking groove 13432 and tightly resists against an inner wall of the locking groove 13432. When the trip mechanism 13 is in the original state, the indication button 5 is pressed downward by the aid of external force, so that the support block 13431 below the indication button 5 extends into the deadlocking groove 13432 and is combined with the inner wall of the deadlocking groove 13432 in a supporting manner, so that the trip rod 133 is in the deadlocking state, when tripping is required, the ejector rod 132 pushes the trip rod 133 to move, so that the support block 13431 slides out of the deadlocking groove 13432, the trip rod 133 and the indication button 5 are unlocked, and the indication button spring 1341 can accelerate to drive the trip rod 133 to move.

The indication button spring 1341 has a first torsion arm 14 and a second torsion arm 15, the first torsion arm 14 is connected with the housing 1, a push rod 16 is arranged on the extending end of the trip lever 133, the second torsion arm 15 is arranged towards the push rod 16 and is bent and hooked on the push rod 16, the side wall of the second torsion arm 15 contacts with the bottom of the indication button 5, the second torsion arm 15 of the indication button spring 1341 bends and hooks on the push rod 16, since the indicator button spring 1341 has a biasing force urging the push rod 16 and the trip lever 133 in the counterclockwise direction, so that the indication button spring 1341 can drive the trip bar 133 to rotate counterclockwise, so that the extension end of the trip bar 133 drives the linkage 183 to move, while the second torsion arm 15 of the indication button spring 1341 is in contact with the bottom of the indication button 5, thereby enabling the indication button 5 to move upward when the second torsion arm 15 is rotated.

A stop block 22 is arranged below the indicating button 5, the stop block 22 is positioned in the shell 1, when the indicating button 5 moves upwards, the stop block 22 is abutted against the inner wall of the shell 1, and when the indicating button 5 is tripped, the indicating button 5 moves upwards until the stop block 22 below the indicating button 5 is abutted against the inner wall of the shell 1, so that the indicating button 5 is positioned at the corresponding stopping positioning position.

The N-pole operating mechanism 10 comprises a contact support 101 rotatably arranged on the inner wall of the shell 1, a movable contact 102 arranged on the contact support 101 and a mechanism spring 103 connected with the contact support 101, wherein the shell 1 encloses an installation space; the moving contact 102 is arranged corresponding to the fixed contact 104 in the installation space, and the contact support 101 is bent from the inner wall of the housing 1 to the installation space far away from the inner wall to form a free end; the contact supporting member 101 is arranged in a Z shape, the moving contact 102 is fixed on the free end, the moving contact 102 is ensured to be located at the middle position of the shell 1, an installation space between the contact supporting member 101 and the shell 1 is used for installing the tripping mechanism 13, and the tripping mechanism 13 and the N-pole operating mechanism 10 are arranged in parallel.

When using, the moving contact 102 sets up the free end at the buckling, thereby when moving contact 102 and static contact 104 are closed, the moving contact 102 is in the intermediate position, introduce the electric arc that moving contact 102 and static contact 104 produced between two parties in the N utmost point arc control device, carry out the arc extinguishing, it is better to make the arc extinguishing effect, enclose into installation space between contact support 101 and the casing 1 simultaneously, thereby conveniently install tripping device 13 in installation space, make electric leakage test tripping device 13 and N utmost point contact part set up side by side, thereby improve electric leakage circuit breaker's space utilization, make electric leakage circuit breaker's compact structure, thereby the cost is practiced thrift.

The operating part 18 comprises a linkage plate 181 fixed on the L-pole operating mechanism 9, a linkage shaft 182 is arranged on the linkage plate 181, the contact support 101 rotates through the linkage shaft 182, the linkage member 183 is arranged on the linkage plate 181, and through the arrangement of the linkage plate 181, when the handle 2 drives the L-pole operating mechanism 9 to rotate, the linkage plate 181 rotates along with the L-pole operating mechanism 9, so that the linkage shaft 182 rotates, the contact 102 support 101 is driven to rotate, and the contact support 101 rotates, so that the movable contact 102 and the static contact 104 are driven to be closed.

The N-pole arc extinguishing device comprises an N-pole arc extinguishing chamber 17, the N-pole arc extinguishing chamber 17 is arranged in an installation space below a moving contact 102 of an N-pole operating mechanism 10 of the leakage circuit breaker, two arc blocking plates 23 used for guiding electric arcs generated by the moving contact 102 and a static contact 104 are arranged between the N-pole arc extinguishing chamber 17 and the moving contact 102, an arc striking channel is formed between the arc blocking plates 23, the N-pole arc extinguishing chamber 17 can conduct arc extinguishing on the N-pole operating mechanism 10 for electric arcs generated by closing of the moving contact 102 and the static contact 104, and meanwhile the arc blocking plates 23 can form the arc striking channel, so that the electric arcs generated by the moving contact 102 and the static contact 104 are intensively guided into the N-pole arc extinguishing chamber 17 to conduct arc extinguishing.

The N-pole arc extinguish chamber 17 is obliquely arranged, the arc baffle 23 is bent to form an arc striking angle, and the moving path of the electric arc is lengthened when the moving contact 102 and the static contact 104 are closed to generate the electric arc through the obliquely arranged N-pole arc extinguish chamber 17 and the arc striking angle, so that the electric arc is lengthened, and the electric arc is easy to extinguish.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. The utility model provides a residual current circuit breaker, includes casing (1), handle (2), leading-out terminal (3), inlet wire end (4), instruction button (5), electromagnetic system (6), L utmost point arc-extinguishing chamber (7) and electric leakage circuit board (8), its characterized in that still includes:

the device comprises an L-pole operating mechanism (9) and an N-pole operating mechanism (10) which are arranged in a shell (1), wherein an operating piece (18) is arranged between the L-pole operating mechanism (9) and the N-pole operating mechanism (10);

the power taking mechanism is used for supplying power between a magnetic yoke (11) on the electromagnetic system (6) and the leakage circuit board (8), and comprises a control piece (12) which is arranged on the handle (2) and used for controlling the on-off between the magnetic yoke (11) and the leakage circuit board (8);

the tripping device comprises a tripping mechanism (13) and a control unit, wherein the tripping mechanism (13) is used for separating a moving contact (102) and a fixed contact (104) on the N-pole operating mechanism (10), the tripping mechanism (13) comprises a voltage release (131) and a tripping rod (133) which is rotatably arranged in a shell (1), a mandril (132) on the voltage release (131) pushes the tripping rod (133) to move so as to drive a linkage member (183) on an operating member (18) to move, and the tripping rod (133) is further provided with an elastic member (134) which is used for driving the tripping rod (133) to rotate towards the direction of the linkage member (183) and driving an indication button (5) to move upwards;

and the N-pole arc extinguishing device is arranged below the N-pole operating mechanism (10) and is used for extinguishing the arc generated by the N-pole operating mechanism (10).

2. The residual current circuit breaker according to claim 1, characterized in that the control member (12) comprises a push rod (121) arranged inside the housing (1) and connected with the handle (2), a contact spring (122) is arranged inside the housing (1), one end of the contact spring (122) is positioned between the magnetic yoke (11) and the push rod (121) and is in a suspended state, the other end of the contact spring (122) is contacted with the residual current circuit board (8), and the handle (2) rotates to drive the push rod (121) and the contact spring (122) to be contacted and enable the contact spring (122) and the magnetic yoke (11) to be contacted.

3. Residual-current circuit breaker according to claim 2, characterized in that a test spring (123) is arranged between the residual-current circuit board (8) and the contact spring (122), wherein one end of the test spring (123) is connected to the residual-current circuit board (8) and the other end is lapped on the contact spring (122).

4. The residual current circuit breaker according to claim 1, wherein the elastic member (134) comprises an indication button spring (1341) provided in the housing (1), the trip lever (133) has three protruding ends, one of the protruding ends is located between the jack (132) of the voltage release (131) and the link (183), the indication button spring (1341) has a biasing force for rotating the protruding end of the trip lever (133) located between the jack (132) and the link (183) toward the link (183), the indication button spring (1341) is located below the indication button (5) and is in contact with the indication button (5), a trip lever spring (1342) is provided on the trip lever (133), the trip lever spring (1342) has a biasing force for rotating the protruding end of the trip lever (133) located between the jack (132) and the link (183) toward the jack (132), and a dead locking piece (1343) is arranged between the extending end of the trip rod (133) close to the indication button (5) and the indication button (5), and when the indication button (5) is pressed down, the dead locking piece (1343) locks the trip rod (133).

5. The residual current circuit breaker as claimed in claim 4, wherein the locking piece (1343) comprises a resisting block (13431) disposed at the bottom of the indication button (5), the extending end of the trip bar (133) facing the resisting block (13431) is provided with a locking groove (13432), and when the indication button (5) is pressed down, the resisting block (13431) moves into the locking groove (13432) and is tightly contacted with the inner wall of the locking groove (13432).

6. Residual current circuit breaker according to claim 4, characterized in that the indicating button spring (1341) has a first torsion arm (14) and a second torsion arm (15), the first torsion arm (14) is connected with the housing (1), a push rod (16) is arranged on the protruding end of the trip lever (133), the second torsion arm (15) is arranged towards the push rod (16) and bent and hooked on the push rod (16), and the side wall of the second torsion arm (15) is in contact with the bottom of the indicating button (5).

7. An earth leakage breaker according to claim 4, characterized in that the N-pole operating mechanism (10) comprises a contact support (101) rotatably arranged on the inner wall of the housing (1), a movable contact (102) arranged on the contact support (101) and a mechanism spring (103) connected to the contact support (101), the housing (1) enclosing an installation space; the moving contact (102) is arranged corresponding to the static contact (104) in the installation space, and the contact support piece (101) is bent towards the installation space far away from the inner wall of the shell (1) to form a free end; the moving contact (102) is fixed on the free end, an installation space between the contact support piece (101) and the shell (1) is used for installing a tripping mechanism (13), and the tripping mechanism (13) and the N-pole operating mechanism (10) are arranged in parallel.

8. The residual current circuit breaker according to claim 7, characterized in that the N-pole arc extinguishing device comprises an N-pole arc extinguishing chamber (17), the N-pole arc extinguishing chamber (17) is disposed in the installation space below the movable contact (102) of the N-pole operating mechanism (10) of the residual current circuit breaker, two arc blocking plates (23) for guiding the arc generated by the movable contact (102) and the fixed contact (104) are disposed between the N-pole arc extinguishing chamber (17) and the movable contact (102), and an arc striking channel is formed between the two arc blocking plates (23).

9. The residual current circuit breaker according to claim 7, characterized in that the operating member (18) comprises a linkage plate (181) fixed on the L-pole operating mechanism (9), a linkage shaft (182) is arranged on the linkage plate (181), the contact support (101) rotates through the linkage shaft (182), and the linkage member (183) is arranged on the linkage plate (181).

10. Residual current circuit breaker according to claim 1, characterized in that a base (19) is arranged in parallel to the housing (1) in the housing (1), the base (19) separating the tripping mechanism (13) from the N-pole operating mechanism (10), the tripping mechanism (13) and the current taking mechanism being arranged on the base (19).

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