CN210200655U

CN210200655U - Intelligent circuit breaker electric leakage tripping mechanism

Info

Publication number: CN210200655U
Application number: CN201921368769.3U
Authority: CN
Inventors: Lehe Hu; 胡乐和; Wenming Hu; 胡文明; Rui Bao; 包瑞
Original assignee: Shanghai Great Wall Switch Factory Co Ltd
Current assignee: Shanghai Great Wall Switch Factory Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-03-27
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses an intelligence circuit breaker electric leakage tripping device, include casing, indicator button, electric leakage hasp, solenoid and move the iron core, the electric leakage hasp be located move the iron core one end and with move the iron core but push-and-pull setting, be equipped with on the electric leakage hasp and drive the electric leakage hasp all the time and keep away from solenoid direction pivoted torsional spring. When the movable iron core is in a release state, the electric leakage lock catch keeps a state far away from the electromagnetic coil under the action of the torsion spring, and the indicating button is abutted against the electric leakage lock catch; when the movable iron core is switched from a release state to an attraction state, the electric leakage lock catch rotates circumferentially towards the electromagnetic coil direction under the pulling of the movable iron core, the indicating button is separated from the electric leakage lock catch and pops out under the action of the reset spring. When the circuit operates normally, the structure of the utility model keeps the part in the state of no work or small working load, and the aging fault is not easy to occur; when the circuit breaks down, the device can respond quickly, and has quick transmission and strong reliability.

Description

Intelligent circuit breaker electric leakage tripping mechanism

Technical Field

The utility model relates to a circuit breaker field especially relates to an intelligence circuit breaker electric leakage tripping device.

Background

When a fault occurs in the power system, a high fault current corresponding to several tens of times of the rated current may flow. The leakage circuit breaker is a switch which can automatically act when the fault leakage current exceeds a preset value, and as long as the leakage current reaches a design selection action current value, a leakage release in the leakage circuit breaker enables the breaker to act, so that the power supply is cut off to play a role in leakage and electric shock protection. Among the structures of the earth leakage breaker, the trip structure is an important component.

Chinese patent application with application publication No. CN108417465A discloses a tripping mechanism of an electrical leakage breaker: the electric leakage tripper comprises a shell, a reset piece, a tripping connecting rod reset spring and an electric leakage tripper comprising a movable iron core, wherein when the movable iron core is in a suction state, a clamping hook at one end of the tripping connecting rod is driven to be buckled with the reset piece through the elastic acting force of the tripping connecting rod reset spring; when the movable iron core is in a releasing state, the elastic force of the reset spring of the tripping connecting rod is counteracted by the pushing force of the movable iron core, so that the tripping connecting rod rotates circumferentially, the clamping hook and the reset piece are separated from the fastening connection, and the reset piece is popped up.

In the above patent, when the circuit normally works, the movable iron core is in a suction state, so the electromagnetic coil is in a long-term working state, the release link rod return spring keeps a fastening state of the hook and the return element, and also keeps a long-term elastic compression state, and the above parts are in a long-term working state and are easy to age and fail; meanwhile, when the leakage tripping action is carried out, the elastic force of the tripping spring is counteracted through the pushing force of the movable iron core which is released, the effect of driving the tripping connecting rod to rotate circumferentially is achieved, and the movable iron core is separated from the coil when being released, so that the displacement and the pushing force have great uncertainty, and the potential danger of unreliable tripping is caused. In addition, the parts of the patent have fewer corresponding limiting structures during assembly, and the assembly difficulty is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides an intelligent breaker leakage tripping mechanism, when the circuit normally operates, the part keeps the state of not working or smaller working load, and the fault is not easy to age; when the circuit breaks down, the device can respond quickly, and has the advantages of quick transmission and strong reliability.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an intelligence circuit breaker electric leakage tripping device, includes the casing, can slide and set up in the casing indicate button, rotatable setting in the casing electric leakage hasp on the casing, fixed solenoid that sets up on the casing and be located the movable iron core of the scalable actuation of solenoid one end, indicate button passes through reset spring and to the outer activity of supporting of casing, its characterized in that mutually: the leakage lock catch is located at one end of the movable iron core and arranged in a push-and-pull mode with the movable iron core, and a torsion spring which drives the leakage lock catch to rotate in the direction away from the electromagnetic coil all the time is arranged on the leakage lock catch. When the electromagnetic coil does not generate magnetism and the movable iron core is in a release state, the electric leakage lock catch keeps a state far away from the electromagnetic coil under the action of the torsion spring, and the indicating button is abutted against the electric leakage lock catch; when the electromagnetic coil generates magnetism and the movable iron core is switched from a disengaged state to an attracted state, the electric leakage lock catch rotates circumferentially towards the electromagnetic coil under the pulling of the movable iron core, the indicating button is separated from contact with the electric leakage lock catch and pops up under the action of the reset spring.

Preferably, the movable iron core and the electric leakage lock catch are assembled to form a thick part and a thin part, the thick part is located at the outer end, the electric leakage lock catch is provided with a large lock hole and a small lock hole which are communicated with each other, the diameter of the large lock hole is larger than that of the thick part, and the diameter of the small lock hole is larger than that of the thin part and smaller than that of the thick part. When the movable iron core is assembled with the leakage lock catch, the thick part of the movable iron core is firstly arranged in the large lock hole until the thin part is reached, and then the thin part is embedded into the small lock hole from the large lock hole for limiting.

Preferably, the electric leakage lock catch is provided with a limiting clamping rod, the indicating button is provided with a limiting groove, and when the movable iron core is in a disengagement state, the limiting clamping rod is located in the limiting groove and is abutted against one side of the limiting groove.

Preferably, still including the fixed spacing boss that sets up on the casing, spacing boss moves the opposite side of iron core relatively at electric leakage hasp, works as when moving the iron core and being in off-going state, under the torsional spring effect, electric leakage hasp is kept away from solenoid and is contradicted with spacing boss.

Preferably, the electronic device further comprises a mounting groove which is arranged on the shell and matched with the indicating button, and the indicating button is positioned in the mounting groove; the one end that the instruction button stretched into the casing is equipped with the baffle, and the one end that is in the casing outside is equipped with the flexion. When the indicating button is separated from the electric leakage lock catch, the baffle is abutted against one side of the mounting groove under the action of the return spring to limit the indicating button to be further ejected; when the indicating button is reset by external force, the bending part is abutted against the shell to limit the indicating button to further displace.

Preferably, the shell is provided with an open slot opposite to the baffle, the baffle and the open slot form a mounting cavity for the movement of the return spring, and the return spring is located in the mounting cavity.

Preferably, on the plane of mounting groove and instruction button contact, be equipped with a plurality of halfcylinders terrace with edges along the direction that instruction button popped out, terrace with edges and instruction button sliding contact.

Preferably, the electric leakage lock catch is positioned above the indication button, and during assembly, the indication button is firstly arranged in the installation groove, and then the electric leakage lock catch is arranged at the upper end of the indication button.

Compared with the prior art, the beneficial effects of the utility model are that: when the circuit normally runs, the part keeps a non-working state or a state with a smaller working load, and the aging fault is not easy to occur; when the circuit breaks down, the device can respond quickly, and has the advantages of quick transmission and strong reliability.

Drawings

Fig. 1 is the utility model discloses an intelligence circuit breaker electric leakage tripping device assembles the schematic diagram.

Fig. 2 is a schematic view of the reset state of the indication button in fig. 1.

Fig. 3 is a schematic view of the leakage lock and the indication button in the abutting state in fig. 1.

Fig. 4 is a schematic diagram of the leakage lock and the indication button in fig. 1 in a release state.

Fig. 5 is a schematic structural diagram of the leakage lock in fig. 1.

Fig. 6 is a schematic view showing the assembly of the indication button and the housing of fig. 1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-6, an intelligent circuit breaker electric leakage tripping device, including casing 1, can slide and set up in casing 1 indicate button 2, rotatable setting in casing 1 electric leakage hasp 5, fixed solenoid 3 that sets up on casing 1 and be located the flexible actuation of 3 one ends of solenoid and move iron core 4, indicate button 2 to support the activity, its characterized in that outside 1 to casing through reset spring 7 mutually: the leakage lock catch 5 is located at one end of the movable iron core 4 and is arranged in a push-and-pull mode with the movable iron core 4, and a torsion spring 6 which drives the leakage lock catch 5 to rotate in the direction away from the electromagnetic coil 3 all the time is arranged on the leakage lock catch 5. When the electromagnetic coil 3 does not generate magnetism and the movable iron core 4 is in a disengagement state, the electric leakage lock catch 5 keeps a state far away from the electromagnetic coil 3 under the action of the torsion spring 6, and the indication button 2 is abutted against the electric leakage lock catch 5; when the electromagnetic coil 3 generates magnetism and the movable iron core 4 is switched from a disengaged state to an attracted state, the electric leakage lock catch 5 rotates circumferentially towards the electromagnetic coil 3 under the pulling of the movable iron core 4, the indication button 2 is separated from the electric leakage lock catch 5, and the indication button pops out under the action of the reset spring 7. When the power system works normally, the circuit breaker does not work, the electromagnetic coil 3 does not generate magnetic attraction, so that the movable iron core 4 is in a disconnection state, the torsion spring 6 can keep the leakage lock catch 5 away from the electromagnetic coil 3 without large elastic acting force, the indicating button 2 is in contact with the leakage lock catch 5 at the moment, and because the power system works normally, the circuit breaker does not work or the working load is small, so that the service life is long; when the electric power system breaks down, the circuit breaker detects the fault current, solenoid 3 produces magnetic attraction, therefore move the quick actuation of iron core 4, because magnetic attraction is greater than the elastic drive power of torsional spring, consequently under the pulling of moving iron core 4, the quick circumferential direction of electric leakage hasp 5 rotates, break away from with instruction button 2 and contradict, instruction button 2 pops out under reset spring 7's elastic action, because the displacement volume is fixed when moving iron core 4 actuation, guaranteed that electric leakage hasp 5 rotates certain angle, thereby stably realize the dropout function.

As an improved specific embodiment, one end of the movable iron core 4 assembled with the leakage lock catch 5 is a thick portion 8 and a thin portion 9, the thick portion 8 is located at the outer end, the leakage lock catch 5 is provided with a large lock hole 10 and a small lock hole 11 which are communicated, the diameter of the large lock hole 10 is larger than that of the thick portion 8, and the diameter of the small lock hole 11 is larger than that of the thin portion 9 and smaller than that of the thick portion 8. When the movable iron core 4 is assembled with the leakage lock catch 5, the thick part 8 of the movable iron core is firstly arranged in the large lock hole 10 until the thin part 9 is reached, and then the thin part 9 is embedded into the small lock hole 11 from the large lock hole 10 for limiting. The movable iron core 4 is arranged from the large lock hole 10 of the leakage lock catch 5, and the thin part 8 of the movable iron core is embedded with the small lock hole 11 to realize assembly, so that the assembly and the disassembly are convenient and rapid, and the transmission is reliable.

As an improved specific embodiment, the leakage lock catch 5 is provided with a limiting clamping rod 12, the indication button 2 is provided with a limiting groove 13, and when the movable iron core 4 is in a disengagement state, the limiting clamping rod 12 is located in the limiting groove and is abutted against one side of the limiting groove 13. The reset spring 7 has an acting force for pushing the indicating button 2 to the outside of the shell 1, so that the limiting clamping rod 12 is fully contacted when being abutted against the limiting groove 13, and the abutting is firm; meanwhile, when the leakage lock catch 5 rotates, the limiting clamping rod 12 can be separated from the limiting groove 13 by rotating the distance equal to the width of the limiting clamping rod 12, and the function of quick tripping is realized.

As an improved specific implementation manner, the electromagnetic leakage protection device further comprises a limiting boss 14 fixedly arranged on the shell 1, the limiting boss 14 is arranged on the other side of the leakage lock catch 5 relative to the movable iron core 4, and when the movable iron core 4 is in a disengaged state, under the action of the torsion spring 6, the leakage lock catch 5 is far away from the electromagnetic coil 3 and is abutted against the limiting boss 14. The limiting boss 14 plays a role in limiting the electric leakage lock catch 5, and under the action of the torsion spring 6, one side of the electric leakage lock catch 5 is abutted against the limiting boss 14, so that the electric leakage lock catch 5 cannot move circumferentially, and the electric leakage lock catch 5 is positioned accurately.

As a modified specific embodiment, the portable electronic device further comprises a mounting groove 15 which is arranged on the shell 1 and matched with the indicating button 2, and the indicating button is positioned in the mounting groove 15; one end of the indicating button 2 extending into the shell 1 is provided with a baffle 16, and one end of the indicating button outside the shell 1 is provided with a bending part 17. When the indication button 2 is separated from the electric leakage lock catch 5, the baffle 16 is abutted against one side of the mounting groove 15 under the action of the return spring 7, so that the indication button 2 is limited from being ejected further; when the indicating button 2 is reset by an external force, the bent portion 17 collides with the housing 1, and further displacement of the indicating button 2 is restricted. The mounting groove 15 is a specific position for assembling the indication button 2 with the shell, the baffle 16 and the mounting groove 15 limit the position of the indication button 2 when the indication button 2 is ejected, and the bending part 17 limits the position of the indication button 2 when the indication button 2 is reset, so that the ejection and reset position states of the indication button 2 are more accurate.

As a modified specific embodiment, the shell 1 is provided with an open slot 18 opposite to the baffle 16, the baffle 16 and the open slot 18 form a mounting cavity for the return spring 7 to move, and the return spring 7 is located in the mounting cavity. The installation cavity is the concrete position of reset spring 7 and casing assembly, and through the fixed of installation cavity for reset spring 7 pressurized and pop out more reliably.

As a modified embodiment, a plurality of semi-cylindrical ledges 19 are arranged on the plane of the mounting groove 15 contacted with the indication button 2 along the ejecting direction of the indication button 2, and the ledges 19 are in sliding contact with the indication button 2. Through terrace with edge 19 and the sliding contact of instruction button 2, reduce the area of contact of instruction button 2 when popping out or reseing, and then reduce frictional force, make the motion of instruction button 2 relative casing 1 more smooth and easy.

As a modified embodiment, the leakage lock catch 5 is located above the indication button 2, and during assembly, the indication button 2 is firstly installed in the installation groove 15, and then the leakage lock catch 5 is installed at the upper end of the indication button 2. The electric leakage lock catch 5 and the indication button 2 are assembled up and down, so that the assembly space is saved, and the relative positions and the installation sequence of the electric leakage lock catch and the indication button are fixed, so that the assembly is more convenient.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an intelligence circuit breaker electric leakage tripping device, includes casing (1), can slide and set up in instruction button (2) of casing (1), can rotate to set up electric leakage hasp (5) on casing (1), fixed solenoid (3) that set up on casing (1) and be located the movable iron core (4) of the scalable actuation of solenoid (3) one end, instruction button (2) support the activity, its characterized in that outward through reset spring (7) to casing (1) mutually: the leakage lock catch (5) is located at one end of the movable iron core (4) and can be arranged in a push-and-pull mode with the movable iron core (4), a torsion spring (6) which drives the leakage lock catch (5) to rotate in the direction away from the electromagnetic coil (3) all the time is arranged on the leakage lock catch (5), when the electromagnetic coil (3) does not generate magnetism and the movable iron core (4) is in a disengagement state, the leakage lock catch (5) keeps a state away from the electromagnetic coil (3) under the action of the torsion spring (6), and the indicating button (2) is abutted to the leakage lock catch (5); when the electromagnetic coil (3) generates magnetism and the movable iron core (4) is switched from a disengaged state to an attracted state, the electric leakage lock catch (5) rotates circumferentially towards the electromagnetic coil (3) under the pulling of the movable iron core (4), the indication button (2) is separated from the electric leakage lock catch (5) to be contacted, and the indication button pops out under the action of the reset spring (7).

2. The intelligent circuit breaker leakage trip mechanism of claim 1, wherein: the movable iron core (4) is thick portion (8) and thin portion (9) with electric leakage hasp (5) assembly one end, thick portion (8) are in the outer end, be provided with big lockhole (10) and little lockhole (11) of intercommunication on electric leakage hasp (5), big lockhole (10) diameter is greater than thick portion (8) diameter, and little lockhole (11) diameter is greater than thin portion (9) diameter, is less than thick portion (8) diameter, when moving iron core (4) and electric leakage hasp (5) assembly, moves iron core thick portion (8) and packs into big lockhole (10) earlier until reaching thin portion (9) after, it is spacing with thin portion (9) by big lockhole (10) embedding small lockhole (11).

3. An intelligent circuit breaker leakage tripping mechanism according to claim 1 or 2, characterized in that: be equipped with spacing kelly (12) on electric leakage hasp (5), be equipped with spacing groove (13) on instruction button (2), work as when moving iron core (4) and being in when throwing off the state, spacing kelly (12) are located spacing inslot and spacing groove (13) one side inconsistent.

4. An intelligent circuit breaker leakage tripping mechanism according to claim 1 or 2, characterized in that: still including fixed spacing boss (14) of setting on casing (1), spacing boss (14) move the opposite side of iron core (4) relatively in electric leakage hasp (5), work as when moving iron core (4) and being in off-state, under torsional spring (6) effect, electric leakage hasp (5) are kept away from solenoid (3) and are contradicted with spacing boss (14).

5. An intelligent circuit breaker leakage tripping mechanism according to claim 1 or 2, characterized in that: the electronic device also comprises a mounting groove (15) which is arranged on the shell (1) and matched with the indicating button (2), and the indicating button is positioned in the mounting groove (15); a baffle (16) is arranged at one end, extending into the shell (1), of the indication button (2), a bent part (17) is arranged at one end, located on the outer side of the shell (1), when the indication button (2) is separated from the electric leakage lock catch (5) to be contacted, the baffle (16) is abutted against one side of the installation groove (15) under the action of the reset spring (7), and the indication button (2) is limited to be further ejected; when the indicating button (2) is reset by external force, the bending part (17) is abutted against the shell (1) to limit the indicating button (2) to further displace.

6. An intelligent circuit breaker leakage trip mechanism according to claim 5, wherein: the shell (1) is provided with an open slot (18) opposite to the baffle (16), the baffle (16) and the open slot (18) form a mounting cavity for the movement of the reset spring (7), and the reset spring (7) is located in the mounting cavity.

7. An intelligent circuit breaker leakage trip mechanism according to claim 5, wherein: on the plane of mounting groove (15) and instruction button (2) contact, be equipped with a plurality of halfcylinders terrace with edge (19) along the direction that instruction button (2) popped out, terrace with edge (19) and instruction button (2) sliding contact.

8. An intelligent circuit breaker leakage trip mechanism according to claim 5, wherein: electric leakage hasp (5) are located indicator button (2) top, and during the assembly, indicator button (2) are packed into mounting groove (15) earlier, again in indicator button (2) upper end installation electric leakage hasp (5).