CN216528698U - Leakage circuit breaker - Google Patents

Abstract

The utility model relates to an electric leakage circuit breaker, which comprises a base, an operating mechanism and a bottom cover, wherein the bottom cover is connected with the base, the operating mechanism is positioned between the bottom cover and the base, the base is provided with a fixed contact and a moving contact, the operating mechanism comprises a support, a connecting rod, a jump buckle, a transmission rod, a lock buckle, a handle and a tripping device, the support is connected with the base, two ends of the connecting rod are respectively hinged with the handle and the jump buckle, the handle is hinged with the support, the lock buckle is provided with a lock buckle table, one end of the jump buckle is positioned on one side of the lock buckle table back to the base, the other end of the jump buckle is provided with a transmission shaft, the support is provided with a movement groove matched with the transmission shaft, a contact spring is arranged between the transmission rod and the base, and the handle is provided with a torsion spring. The utility model provides a leakage circuit breaker with a simple structure.

Description

Leakage circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a leakage circuit breaker.

Background

The leakage circuit breaker is a switch which can automatically act when the leakage current exceeds a preset value in a circuit, the common leakage circuit breaker is divided into a voltage type and a current type, the current type is divided into an electromagnetic type and an electronic type, the leakage circuit breaker is used for preventing a person from getting an electric shock, the leakage circuit breaker is selected according to different requirements of direct contact and indirect contact electric shock protection, and the structure of the existing leakage protector is complex.

SUMMERY OF THE UTILITY MODEL

In summary, in order to overcome the defects in the prior art, the utility model provides the residual current circuit breaker with a simple structure.

In order to achieve the purpose, the utility model provides the following technical scheme: a leakage circuit breaker comprises a base, an operating mechanism and a bottom cover, wherein the bottom cover is connected with the base, the operating mechanism is positioned between the bottom cover and the base, the base is provided with a static contact and a moving contact, the operating mechanism comprises a support, a connecting rod, a jump buckle, a transmission rod, a lock catch, a handle and a tripping device, the support is connected with the base, two ends of the connecting rod are respectively hinged with the handle and the jump buckle, the handle is hinged with the support, the lock catch is provided with a lock catch platform, one end of the jump buckle is positioned on one side of the lock catch platform back to the base, the other end of the jump buckle is provided with a transmission shaft, the support is provided with a moving groove matched with the transmission shaft, the transmission rod is pushed to the static contact when the jump buckle slides, the transmission rod pushes the moving contact to move towards the static contact when moving towards the static contact, a contact spring is arranged between the transmission rod and the base, the tripping device controls the lock catch to be separated from the jump buckle, and the handle is provided with a torsional spring.

The arrangement is that the breaker is in a communicated state in a normal state, the handle stays at one communicated side, the handle swings on the bracket at the moment, the connecting rod is pressed downwards, the connecting rod presses the trip buckle downwards, one end of the pressed trip buckle leans against the latch, the other end of the pressed trip buckle presses downwards towards the transmission rod in a movable range limited by the movement groove, the transmission rod presses the moving contact to a position contacted with the static contact, the connection state is realized at the moment, the contact spring exerts an upward acting force on the transmission rod below the transmission rod to enable the transmission rod to prop against the trip buckle, the trip buckle props against the handle, the handle is kept at the communicated position, when the electric leakage phenomenon occurs, the tripping device receives a signal to enable the latch to be disconnected from the trip buckle, one end of the trip buckle is not supported any more, and the other end of the trip buckle cannot be conducted to the connecting rod when the upward acting force of the transmission rod is exerted on the other end of the trip buckle, the transmission rod can only rotate around a hinged point with the connecting rod, the transmission rod can naturally rise, the movable contact can also be disconnected with the fixed contact, the disconnection state is achieved, the handle which is not jacked can be also driven to one side of disconnection by the torsion spring at the moment, the connection is achieved, the supporting block can return to the original position when the electric leakage phenomenon is relieved, one end of the movable part which is pressed down by pressing the handle again can lean on the lock catch again to press down the transmission rod, a sliding groove matched with the transmission rod can be further formed in the base, and the sliding of the movable part is enabled to be more stable.

Furthermore, the tripping device comprises a tripping coil and a clamping cover, the lock catch is hinged to the support, a pushing plate is arranged at the position, located on the clamping cover, of the lock catch, the tripping coil controls the lock catch to move back to the jumping buckle, and a lock catch spring is arranged between the lock catch and the base.

So set up, when electric leakage phenomenon takes place, trip coil received the signal just can let move movable iron core activity, exerts the effort on the slurcam, makes the hasp swing on the support, just can follow during the swing and jump and detain the below and pull open, makes the two break away from the connection, and the hasp spring just can push the hasp back original position when electric leakage phenomenon is relieved, simple structure.

Furthermore, the trip coil is located on one side of the lock catch, which faces away from the jump buckle, the push plate is provided with a clamping groove matched with the clamping cover, and the end face of the clamping cover is provided with a clamping cover with a diameter larger than the width of the clamping groove.

So set up, trip coil's the iron core that moves will insert in the draw-in groove, moves the iron core when electric leakage phenomenon takes place and withdraws, and the card lid will take the slurcam to remove towards trip coil together, and the hasp just can swing on the support this moment, simple structure, and the drive is stable.

Furthermore, a pressing groove is formed in one side, facing the transmission rod, of the jump buckle, the transmission shaft is located in the pressing groove, and a pressing head with the width smaller than that of the pressing groove is arranged on one side, facing the jump buckle, of the transmission rod.

So set up, the pressure head will be inserted among the indent, with the transmission shaft contact, also exert the effort to the transmission rod by columniform transmission shaft when jumping to detain and push down, the contact surface is invariable, and the motion process is more stable.

Further, the motion groove is an arc groove.

So set up to jump after the arc and detain and rely on the transmission shaft to slide when the motion groove will surround the tie point swing of jumping knot and hasp, the tie point can not remove, and is more stable, and also is difficult for blocking when jumping the knot during electric leakage and surrounding the pin joint swing with the connecting rod.

Furthermore, the transmission rod is provided with a transmission fulcrum groove matched with the thickness of the moving contact.

So set up, the moving contact will insert and move about among the transmission fulcrum groove, and the moving contact is taken to push down when the transfer line pushes down, also can take the moving contact up when the transfer line is pushed back by the contact spring, and the elastic restoring force that relies on the moving contact more than, it is more stable.

Further, the base is provided with an anti-reverse connection terminal piece, the anti-reverse connection terminal piece comprises a connecting plate and a bending plate, the connecting plate and the bending plate form an included angle, the base is provided with a connector matched with the connecting plate, the connector is communicated with the base, the connecting plate is provided with a buckle, the buckle and the connecting plate form an included angle, and the buckle faces to the direction of the bending plate and inclines.

With the arrangement, the bending plate of the anti-reverse terminal plate can be directly grasped during installation, the connecting plate is inserted opposite to the connecting port, the bending plate arranged at an included angle with the connecting plate in the insertion process can prop against the edge of the connecting port and continuously bends towards the connecting plate, the buckle is not contacted with the side wall of the connecting port any more after the connecting plate is completely inserted, at the moment, the buckle can pop out under the action of restoring force, at the moment, the anti-reverse terminal plate is successfully clamped, and the connection is completed, then the operating mechanism is arranged in the bottom cover, and then the bottom cover is connected with the base to finish the installation, the installation is convenient, when the disassembly is needed, the anti-reverse connection terminal piece can be replaced by pulling out the anti-reverse connection terminal piece from the connector only by pressing down the buckle from the bottom of the base, when the connector is longer, the elastic piece can not be popped up, the side wall of the connector can be always propped against the side wall of the connector, the connector is connected to the base through friction, and the connector can be directly pulled out during disassembly.

Furthermore, an inclined table is arranged at the position of the opening edge of one side, facing the bottom cover, of the connecting port, the inclined table is located at one side, facing the bending plate, of the connecting port, and the angle of the inclined table is matched with that of the bending plate.

So set up, the connecting plate of preventing reverse-connection terminal piece after the connection will be located the connector, and the board of bending will press on the sloping bench, with the sloping bench laminating, the sloping bench will be withstood the board of bending, makes its angle that keeps the perk all the time.

Furthermore, a clamping groove is formed in one side, back to the bottom cover, of the connecting port, the clamping groove is located in one side, facing the buckle, of the connecting port, and the buckle is located in the clamping groove.

So set up, the buckle that is bent by the pressure after the connecting plate inserts completely will pop out again in the position of draw-in groove, will prevent reverse connection terminal piece and block, only need insert instruments such as screwdriver in the draw-in groove when needing to dismantle, the screwdriver head just can crowd the draw-in groove into, presses the buckle to the connecting plate, at this moment alright directly will prevent reverse connection terminal piece and pull out, and it is more convenient to dismantle.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a left side sectional view showing a communicating state of the embodiment of the present invention.

Fig. 4 is a left side cross-sectional view of an open state of an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an operating mechanism according to an embodiment of the present invention.

Fig. 6 is an exploded view of the operating mechanism of the embodiment of the present invention.

FIG. 7 is a top view of an embodiment of the present invention.

Fig. 8 is a sectional view taken along the plane a-a of fig. 7.

Fig. 9 is an enlarged view of a portion B of fig. 8.

Fig. 10 is a schematic structural diagram of a base according to an embodiment of the utility model.

The reference numbers in the figures mean: 1. the device comprises a base, 101, a connecting port, 1012, a clamping groove, 102, a ramp, 103, a static contact, 104, a movable contact, 105, a contact spring, 106, a locking spring, 2, an operating mechanism, 201, a support, 2011, a moving groove, 202, a connecting rod, 203, a trip buckle, 2031, a transmission shaft, 2032, a pressure groove, 204, a transmission rod, 2041, a pressure head, 2042, a transmission fulcrum groove, 205, a lock catch, 2051, a pushing plate, 20511, a clamping groove, 2052, a locking platform, 206, a handle, 2061, a torsion spring, 207, a tripping device, 2071, a tripping coil, 20711, a clamping cover, 20712, a movable iron core, 3, an anti-reverse connection terminal piece, 301, a connecting plate, 3011, a buckle, 302, a bending plate and 4.

Detailed Description

The present embodiment is only an explanation of the present embodiment, and it is not a limitation of the present embodiment, and a person skilled in the art can make modifications without inventive contribution to the present embodiment as needed after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present embodiment.

Referring to the attached drawings, the utility model provides the following technical scheme: an electric leakage circuit breaker comprises a base 1, an operating mechanism 2 and a bottom cover 4, wherein the bottom cover 4 is connected with the base 1, the operating mechanism 2 is positioned between the bottom cover 4 and the base 1, the base 1 is provided with a fixed contact 103 and a movable contact 104, the operating mechanism 2 comprises a bracket 201, a connecting rod 202, a jump buckle 203, a transmission rod 204, a lock catch 205, a handle 206 and a tripping device 207, the bracket 201 is connected with the base 1, two ends of the connecting rod 202 are respectively hinged with the handle 206 and the jump buckle 203, the handle 206 is hinged with the bracket 201, the lock catch 205 is provided with a lock catch platform 2052, one end of the jump buckle 203 is positioned on one side of the lock catch platform 2052, which is opposite to the base 1, the other end of the jump buckle 203 is provided with a transmission shaft 2031, the bracket 201 is provided with a movement groove 203203 which is matched with the transmission shaft 2031, and the jump buckle 203 pushes the fixed contact 103 to the transmission rod 103 when sliding, when the transmission rod 204 moves towards the fixed contact 103, the moving contact 104 is pushed to move towards the fixed contact 103, a contact spring 105 is arranged between the transmission rod 204 and the base 1, the tripping device 207 controls the lock catch 205 to be separated from the trip catch 203, and the handle 206 is provided with a torsion spring 2061.

Thus, in a normal state, the circuit breaker is in a connected state, the handle 206 stays at one side which is connected, at this time, the handle 206 swings on the bracket 201 to press down the connecting rod 202, the connecting rod 202 presses down the trip catch 203, one end of the pressed trip catch 203 leans against the latch 205, the other end of the pressed trip catch 203 is pressed down towards the transmission rod 204 in a movable range defined by the movement groove 2011, the transmission rod 204 presses the moving contact 104 to a position contacted with the fixed contact 103, at this time, the connection state is established, the contact spring 105 applies an upward acting force to the transmission rod 204 below the transmission rod 204 to enable the transmission rod 204 to prop against the trip catch 203, the trip 203 props against the handle 206 to immobilize the position where the handle 206 is connected, when a tripping device 207 receives a signal to disconnect the latch 205 from the trip catch 203 when an electric leakage phenomenon occurs, one end of the trip catch 203 is no longer supported, at this time, the other end of the trip 203 is applied with an upward acting force by the transmission rod 204 and cannot be transmitted to the connecting rod 202, the driving rod 204 can naturally rise only by rotating around a hinge point with the connecting rod 202, the movable contact 104 can also be disconnected with the fixed contact 103, so that the movable contact enters a disconnection state, the handle 206 which is not propped against can be brought to the disconnection side by the torsion spring 2061, the support block can return to the original position when the electric leakage phenomenon is relieved, one end of the movable part pressed by pressing the handle 206 again can lean against the lock catch 205 to press the driving rod 204 down, and the base 1 can be further provided with a sliding groove matched with the driving rod 204, so that the sliding of the movable part is more stable and the structure is simple.

Preferably, in this embodiment, the trip device 207 includes a trip coil 2071 and a plunger 20712, the latch 205 is hinged to the bracket 201, a push plate 2051 is disposed at a position of the latch 205 on the plunger 20712, the trip coil 2071 controls the latch 205 to swing away from the trip 203, and a latch spring 106 is disposed between the latch 205 and the base 1.

With such an arrangement, when the leakage phenomenon occurs, the trip coil 2071 receives the signal to move the movable iron core 20712, and applies an acting force on the pushing plate 2051 to swing the latch 205 on the bracket 201, so that the latch 205 is pulled away from the lower side of the trip catch 203 during the swinging, and the latch 205 is released by the latch spring 106 when the leakage phenomenon is released, so that the latch 205 is pushed back to the original position, and the structure is simple.

In this embodiment, preferably, the trip coil 2071 is located on a side of the lock catch 205 facing away from the trip catch 203, the pushing plate 2051 is provided with a slot 20511 adapted to the movable iron core 20712, and an end surface of the movable iron core 20712 is provided with a cap 20711 having a diameter larger than a width of the slot 20511.

So set up, trip coil 2071's movable iron core 20712 will be inserted in draw-in groove 20511, and movable iron core 20712 withdraws when electric leakage phenomenon takes place, and card lid 20711 will take pushing plate 2051 to move towards trip coil 2071 together, and hasp 205 just can swing on support 201 this moment, simple structure, and the drive is stable.

In this embodiment, preferably, a pressing groove 2032 is provided on one side of the jump buckle 203 facing the transmission rod 204, the transmission shaft 2031 is located in the pressing groove 2032, and a pressing head 2041 with a width smaller than that of the pressing groove 2032 is provided on one side of the transmission rod 204 facing the jump buckle 203.

So set up, pressure head 2041 will be inserted in indent 2032, contact with transmission shaft 2031, and cylindrical transmission shaft 2031 exerts the effort to transmission rod 204 when jump ring 203 pushes down, and the contact surface is invariable, and the motion process is more stable.

In this embodiment, the moving groove 2011 is preferably an arc groove.

So set up to arc back jump ring 203 and rely on the transmission shaft 2031 to slide in the motion groove 2011 when will swing around the tie point of jump ring 203 and hasp 205, the tie point can not remove, and is more stable, and also is difficult for blocking when jump ring 203 swings around the pin joint with connecting rod 202 during the electric leakage.

In this embodiment, preferably, the transmission rod 204 is provided with a transmission fulcrum groove 2042 adapted to the thickness of the movable contact 104.

So set up, the moving contact 104 will insert and move among the transmission fulcrum groove 2042, and the moving contact 104 is taken down when the transfer line 204 pushes down, also can take the moving contact 104 up when the transfer line 204 is pushed back by the contact spring 105, and the elastic restoring force that relies on the moving contact 104 more is more stable.

This embodiment is preferred, base 1 is equipped with prevents that it connects terminal piece 3 to prevent, prevent that it connects terminal piece 3 includes connecting plate 301 and the board 302 of bending to connect, connecting plate 301 with the board 302 of bending becomes the contained angle setting, base 1 be equipped with the connector 101 of connecting plate 301 adaptation, connector 101 link up base 1, connecting plate 301 is equipped with buckle 3011, buckle 3011 with connecting plate 301 becomes the contained angle setting, buckle 3011 orientation the board 302 direction slope of bending.

So set up, can grasp the bending plate 302 of the anti-reverse connection terminal plate 3 directly during installation, insert the connection board 301 against the interface port 101, the bending plate 302 forming the included angle with the connection board 301 in the course of inserting will withstand the edge of the interface port 101, continuously deform and bend towards the connection board 301, after the connection board 301 is inserted completely, the buckle 3011 no longer contacts with sidewall of the interface port 101, at this moment will pop out under the influence of restoring force, at this moment the anti-reverse connection terminal plate 3 is blocked successfully, finish connecting, then install the operating device 2 in the bottom cover 4, connect bottom cover 4 and base 1 and can finish installing, easy to install, need to dismantle also only to press down the buckle 3011 from the bottom of base 1 and can pull out the anti-reverse connection terminal plate 3 from 101 and change, the elastic sheet will not pop out when the interface port 101 is longer, will withstand the sidewall of the interface port 101 all the time, the connecting rod is connected to the base 1 by friction and can be directly pulled out during disassembly.

In this embodiment, preferably, an inclined platform 102 is disposed at a position of an opening edge of one side of the connection port 101 facing the bottom cover 4, the inclined platform 102 is located at one side of the connection port 101 facing the bending plate 302, and an angle of the inclined platform 102 is adapted to the bending plate 302.

With such an arrangement, the connecting plate 301 of the reverse connection preventing terminal piece 3 after connection is located in the connecting port 101, the bending plate 302 is pressed on the sloping bench 102 and attached to the sloping bench 102, and the sloping bench 102 will push the bending plate 302 to keep the tilting angle of the bending plate all the time.

In this embodiment, a clamping groove 1012 is preferably disposed on a side of the connecting port 101 facing away from the bottom cover 4, the clamping groove 1012 is located on a side of the connecting port 101 facing the buckle 3011, and the buckle 3011 is located in the clamping groove 1012.

So set up, buckle 3011 that the connecting plate 301 is bent after inserting completely will pop out again in the position of draw-in groove 1012, will prevent joining in reverse terminal piece 3 and block, only need insert tools such as screwdriver in draw-in groove 1012 when needing to dismantle, the screwdriver head just can crowd into draw-in groove 1012, press buckle 3011 to connecting plate 301, at this moment alright directly will prevent joining in reverse terminal piece 3 and pull out, it is more convenient to dismantle.

Although the present invention has been described in detail with reference to the foregoing embodiments, the scope of the present invention is not limited thereto, and any person skilled in the art should be construed as being included in the scope of the present invention, and equivalents and modifications of the technical solution and the inventive concept thereof are also included in the scope of the present invention.

Claims (9)

1. The utility model provides an electric leakage circuit breaker, includes base, operating device and bottom, the bottom with the base is connected, operating device is located the bottom with between the base, the base is equipped with static contact and moving contact, its characterized in that: the operating mechanism comprises a support, a connecting rod, a jump buckle, a transmission rod, a lock catch, a handle and a tripping device, the support is connected with the base, two ends of the connecting rod are respectively hinged with the handle and the jump buckle, the handle is hinged with the support, the lock catch is provided with a lock catch table, one end of the jump buckle is located on one side, back to the base, of the lock catch table, the other end of the jump buckle is provided with a transmission shaft, the support is provided with a motion groove matched with the transmission shaft, the jump buckle pushes the transmission rod to the fixed contact when sliding, the transmission rod pushes the moving contact to move towards the fixed contact when moving towards the fixed contact, a contact spring is arranged between the transmission rod and the base, the tripping device controls the lock catch to be separated from the jump buckle, and the handle is provided with a torsion spring.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: the tripping device comprises a tripping coil and a clamping cover, the lock catch is hinged to the support, a pushing plate is arranged at the position, located on the clamping cover, of the lock catch, the tripping coil controls the lock catch to move back to the jump buckle, and a lock catch spring is arranged between the lock catch and the base.

3. A residual current circuit breaker as claimed in claim 2, characterized in that: the trip coil is located on one side of the lock catch, which faces away from the jump buckle, the push plate is provided with a clamping groove matched with the clamping cover, and the end face of the clamping cover is provided with a clamping cover, the diameter of the clamping cover is larger than the width of the clamping groove.

4. A residual current circuit breaker as claimed in claim 1, characterized in that: one side of the jump buckle facing the transmission rod is provided with a pressing groove, the transmission shaft is positioned in the pressing groove, and one side of the transmission rod facing the jump buckle is provided with a pressing head with the width smaller than that of the pressing groove.

5. A residual current circuit breaker as claimed in claim 1, characterized in that: the motion groove is an arc-shaped groove.

6. A residual current circuit breaker as claimed in claim 1, characterized in that: the transmission rod is provided with a transmission fulcrum groove matched with the thickness of the moving contact.

7. A residual current circuit breaker as claimed in claim 1, characterized in that: the base is provided with an anti-reverse connection terminal piece, the anti-reverse connection terminal piece comprises a connecting plate and a bending plate, the connecting plate and the bending plate form an included angle, the base is provided with a connector matched with the connecting plate, the connector is communicated with the base, the connecting plate is provided with a buckle, the buckle and the connecting plate form an included angle, and the buckle faces to the direction of the bending plate.

8. A residual current circuit breaker as claimed in claim 7, characterized in that: the connector is provided with an inclined platform at the position of the opening edge at one side facing the bottom cover, the inclined platform is positioned at one side of the connector facing the bending plate, and the angle of the inclined platform is matched with the bending plate.

9. A residual current circuit breaker as claimed in claim 7, characterized in that: and a clamping groove is formed in one side, back to the bottom cover, of the connecting port, the clamping groove is located in one side, facing the buckle, of the connecting port, and the buckle is located in the clamping groove.

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