CN114334568A - Miniature circuit breaker and circuit breaker control method - Google Patents

Abstract

The invention discloses a miniature circuit breaker and a circuit breaker control method. Firstly, a shell cover is fixedly combined with a shell body through the matching of an elastic lug, a bulge and a groove to form a complete breaker; hooking the breaker on the installation section through an upper fixing groove on the installation groove, and then rotating the threaded column through a linear groove at the bottom of the threaded column to enable the installation section to be clamped between the upper fixing groove and the lower fixing groove; the incoming wire is inserted into the first connecting groove through the opening in the top of the shell, then the first bolt is screwed by inserting the first bolt groove through a tool, the first bolt drives the first abutting piece to extrude and fix the inserted electric wire, meanwhile, the outgoing electric wire is inserted into the second connecting groove through the opening in the bottom of the shell, meanwhile, the tool is inserted into the second bolt groove, the second bolt is screwed, and the second bolt drives the second abutting piece to extrude and fix the electric wire.

Description

Miniature circuit breaker and circuit breaker control method

Technical Field

The invention relates to a miniature circuit breaker, in particular to a miniature circuit breaker and a circuit breaker control method.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. Has been widely used. Distribution of electricity is an extremely important link in the generation, transmission and use of electricity. The distribution system comprises a transformer and various high-low voltage electrical equipment, and the low-voltage circuit breaker is an electrical appliance with a large using amount.

Miniature circuit breaker generally is domestic circuit breaker, but, the multiple circuit breaking control of current circuit breaker all is the linkage, can't be better when leading to breaking judge the use of circuit breaker to the reason and the condition of breaking, is unfavorable for the circuit breaker.

Disclosure of Invention

The present invention is directed to a miniature circuit breaker and a circuit breaker control method to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a miniature circuit breaker and a circuit breaker control method comprise a shell, wherein a first control mechanism is arranged at the top of the shell, a second control mechanism is arranged at the bottom of the shell, a first connecting groove is fixedly connected to one corner of the top of the shell, an opening is formed in the top surface of the shell corresponding to the first connecting groove, a first bolt groove is formed in the front side of the shell corresponding to the first connecting groove, a first bolt is arranged in the first bolt groove, one end of the first bolt penetrates through the first bolt groove and is inserted into the first connecting groove to be rotatably connected with a first abutting piece, the first bolt is in threaded connection with the first connecting groove, a second connecting groove is fixedly connected to one corner of the bottom of the shell, an opening is formed in the bottom surface of the shell corresponding to the second connecting groove, a second bolt groove is formed in the front side of the shell corresponding to the second connecting groove, a second bolt is arranged in the second bolt groove, one end of the second bolt penetrates through the second connecting groove and is inserted into the second connecting groove to be rotatably connected with a second abutting piece, the second bolt is in threaded connection with the second connecting groove, the first control mechanism comprises a first fixed hook, a first movable hook, a first insulating column, a first connecting sheet, a first upper pole piece, a first lower pole piece, a winding coil, a magnetic column, a first ejector rod, a guide rod, a first limiting piece, a first guide sleeve, a first spring, a first U-shaped seat, a second baffle piece and a fourth spring, and the second control mechanism comprises a second fixed hook, a second movable hook, a second insulating column, a second connecting sheet, a second upper pole piece, a second lower pole piece, a deformation piece, a second ejector rod, a second guide sleeve, a second limiting piece, a second spring, a second U-shaped seat, a third baffle piece and a fifth spring.

As a further scheme of the invention: the outside of first fixed hook and second fixed hook is equipped with initiative unhook mechanism jointly, and initiative unhook mechanism is including montant, third uide bushing, lifting plate, third spring, plectrum and first separation blade.

As a still further scheme of the invention: the vertical top that runs through the casing of montant, the outside at the montant is established to third uide bushing sliding sleeve, the top of montant stretch out the casing and with lifter plate fixed connection, the outside at the montant is established to the third spring housing, the top of third spring and the top inner wall fixed connection of casing, the bottom and the first separation blade fixed connection of third spring, first separation blade fixed connection is in the outside of montant, the plectrum is equipped with two and equal fixed connection on the same side outer wall of montant, the plectrum corresponds with first fixed hook and second fixed hook respectively, third uide bushing and casing fixed connection.

As a still further scheme of the invention: the shell cover is arranged outside one side of the shell, elastic lugs are symmetrically and fixedly connected to four sides of the shell cover, protrusions are fixedly connected to the outer walls of the elastic lugs, and grooves matched with the protrusions are formed in the positions, corresponding to the protrusions, of the shell.

As a still further scheme of the invention: the utility model discloses a mounting groove, including casing, the inboard fixed connection in upper portion of mounting groove, the lower part inboard of mounting groove is equipped with down the fixed slot, the inner wall laminating and the sliding connection of one side of lower fixed slot and mounting groove, the bottom threaded connection of mounting groove has the screw thread post, the one end of screw thread post is inserted in the mounting groove and is connected with the bottom surface rotation of lower fixed slot, a word groove has been seted up to the bottom of screw thread post, the mounting groove, go up the fixed slot, fixed establishment is constituteed jointly to lower fixed slot and screw thread post, fixed establishment is used for with external installation section bar centre gripping fixed.

As a still further scheme of the invention: one end of the first fixed hook is hinged with the inner wall of the shell through a hinge seat, the first U-shaped seat is fixedly connected with the inner side of the shell, the first movable hook penetrates through the first U-shaped seat in a sliding manner, the first insulation column is fixedly connected with the end part of the first movable hook, one end of the first insulation column penetrates out of the shell and is connected with the shell in a sliding manner, a through hole for the first insulation column to penetrate out is formed in the shell, the second baffle is fixedly connected with the first movable hook at the inner side of the first U-shaped seat, the fourth spring is sleeved at the outer side of the first movable hook, one end of the fourth spring is fixedly connected with the second baffle, the other end of the fourth spring is fixedly connected with the inner wall of the first U-shaped seat, the first connecting plate is fixedly connected with the outer side of the first movable hook at the outer side of the first U-shaped seat, the first upper pole piece and the first lower pole piece are respectively arranged at the outer side of the top bottom of the first connecting plate, the first upper pole piece and the first lower pole piece are fixedly connected with the shell, first uide bushing and casing fixed connection, the vertical slip of guide bar runs through first uide bushing, the bottom and the first spacing piece fixed connection of guide bar, the top and the magnetism post fixed connection of guide bar, first ejector pin fixed connection is at the top of magnetism post, winding coil is around establishing the outside at the magnetism post, the top and the first fixed hook of first ejector pin correspond, the one end and the first fixed hook fixed connection of first spring, the other end and the inner wall fixed connection of casing of first spring, first fixed hook and first movable hook correspond and the adaptation.

As a still further scheme of the invention: the second fixed hook corresponds to the second movable hook and is left-falling, one end of the second fixed hook is fixedly connected with the inner wall of the shell through a hinged seat, the second movable hook penetrates through the second U-shaped seat in a sliding manner, the second U-shaped seat is fixedly connected with the inner wall of the shell, the third baffle is fixedly connected to the outer wall of the second movable hook in the second U-shaped seat, the fifth spring is arranged between the third baffle and the second U-shaped seat and sleeved on the outer side of the second movable hook, the second connecting sheet is fixedly connected to the outer side of the second movable hook in the second U-shaped seat, the second upper pole piece and the second lower pole piece are respectively arranged on the outer side of the top bottom of the second connecting sheet, the second upper pole piece and the second lower pole piece are fixedly connected with the shell, the second insulating column is fixedly connected to the end portion of the second movable hook, one end of the second insulating column penetrates through the shell and is slidably connected with the shell, the deformation sheet is arranged below the second fixed hook and is clamped in the shell, the second guide sleeve is arranged above the deformation sheet, the second guide sleeve is fixedly connected with the shell, the second ejector rod is connected to the inner side of the second guide sleeve in a sliding mode, the bottom end of the second ejector rod is fixedly connected with the second limiting sheet, the top end of the second ejector rod corresponds to the second fixing hook, the second spring is fixedly connected to the top of the second fixing hook, and one end of the second spring is fixedly connected with the shell.

As a still further scheme of the invention: the first connecting groove is electrically connected with the first upper pole piece, the first lower pole piece is electrically connected with the winding coil through a conducting wire, the winding coil is electrically connected with the second upper pole piece through a conducting wire, the second lower pole piece is electrically connected with one end of the deformation piece through an electric wire, and the other end of the deformation piece is electrically connected with the second connecting groove through a conducting wire.

A miniature circuit breaker control method comprises the following steps:

the method comprises the following steps: assembling the circuit breaker, namely firstly, fixedly combining the shell cover with the shell through the matching of the elastic lug, the bulge and the groove to form a complete circuit breaker;

step two: the installation of the circuit breaker, hook the circuit breaker on the installation section bar through the upper fixed slot on the mounting groove, then rotate the threaded column through the straight trough of the threaded column bottom, thus the threaded column drives the lower fixed slot to support on the installation section bar, make the installation section bar be grasped between upper fixed slot and lower fixed slot, finish fixing;

step three: connecting external electric wires, inserting an incoming electric wire into a first connecting groove through an opening in the top of a shell, then inserting a tool into a first bolt groove to screw a first bolt, driving a first abutting sheet to extrude and fix the inserted electric wire by the first bolt, simultaneously inserting an outgoing electric wire into a second connecting groove through an opening in the bottom of the shell, simultaneously inserting a second bolt groove by the tool, screwing a second bolt, driving a second abutting sheet by the second bolt to extrude and fix the electric wire, and finishing a wiring operation;

step four: the operation is carried out, the first insulating column is pressed, the first insulating column drives the first movable hook to slide, the first fixed hook end is jacked up under the action of the first spring, finally the first movable hook and the first fixed hook are staggered, the first fixed hook end is reset under the action of the first spring, the first insulating column is loosened, the first movable hook is reset under the action of the first U-shaped seat, the second baffle and the fourth spring, the first movable hook is limited by the first fixed hook, so that the top bottom of the first connecting piece is respectively abutted against the first upper pole piece and the first lower pole piece to form a passage at the moment, then the second insulating column is pressed, the second insulating column drives the second movable hook to slide, the end of the second fixed hook is jacked up, finally the second movable hook is staggered with the second fixed hook, the second fixed hook is reset under the action of the second spring, the second insulating column is loosened at the moment, the second movable hook is reset under the action of the second U-shaped seat, the third baffle and the fifth spring, and the second movable hook is limited by the second fixed hook, so that the top and the bottom of the second connecting sheet respectively abut against the second upper pole piece and the second lower pole piece to form a passage;

step five: overload protection, when the load in the circuit is large, the winding coil generates magnetism at the moment, the winding coil drives the magnetic column to ascend along the sliding direction of the first guide sleeve and the first guide rod, so that the first ejector rod is driven to upwards eject the first fixed hook, the limitation on the first movable hook is removed, the first movable hook is reset under the left and right of the first U-shaped seat, the second baffle and the fourth spring, the first connecting piece is separated from the first upper pole piece and the first lower pole piece, and the circuit breaking is completed;

step six: short-circuit protection, wherein during short circuit, the deformation sheet deforms, the deformation sheet is used for renting a second ejector rod, the second ejector rod moves upwards along a second guide sleeve, so that the second fixed hook is jacked upwards by the second ejector rod, the limitation on a second movable hook is removed, the second movable hook is reset under the action of a second U-shaped seat, a third baffle and a fifth spring, and a second connecting sheet is separated from a second upper pole piece and a second lower pole piece to form open circuit;

step seven: the lifting plate is lifted downwards manually, so that the vertical rod extrudes the third spring through the first separation blade, the lifting plate drives the vertical rod to extend the third guide sleeve to slide upwards, the vertical rod drives the shifting piece to lift the first fixed hook and the second fixed hook upwards, the first fixed hook is released from fixing the first movable hook, and the second fixed hook is fixed on the second movable hook to complete manual disconnection.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention uses the cooperation between the shell, the first control mechanism, the second control mechanism, the first connecting groove, the first bolt, the first abutting sheet, the second connecting groove, the second bolt, the second abutting sheet, the first fixed hook, the first movable hook, the first insulating column, the first connecting sheet, the first upper pole piece, the first lower pole piece, the winding coil, the magnetic column, the first ejector rod, the guide bar, the first spacing sheet, the first guide sleeve, the first spring, the second fixed hook, the second movable hook, the second insulating column, the second connecting sheet, the second upper pole piece, the second lower pole piece, the deformation sheet, the second ejector rod, the second guide sleeve, the second spacing sheet, the fifth spring, the second spring, the first catch, the first U-shaped seat, the second catch, the fourth spring, the second U-shaped seat and the third catch to make the circuit breaker have two groups of independent control circuit break protection, need two sets of controls all to communicate just can work, improved the security of circuit breaker, and through this design for the operation is more convenient.

2. According to the invention, through the matching use of the vertical rod, the third guide sleeve, the lifting plate, the third spring, the shifting sheet and the first blocking sheet, the circuit breaker can be actively subjected to circuit breaking operation, and the safety of the circuit breaker is improved.

3. According to the invention, through the matching use among the shell cover, the elastic lug, the bulge and the groove, the shell cover can be conveniently detached from and installed on the shell, so that the maintenance of the circuit breaker is facilitated.

4. According to the invention, the installation groove, the upper fixing groove, the lower fixing groove and the threaded column are matched for use, so that the breaker is more convenient to install and disassemble.

Drawings

Fig. 1 is a schematic structural diagram of a miniature circuit breaker and a circuit breaker control method.

Fig. 2 is an installation diagram of a miniature circuit breaker and a circuit breaker control method.

Fig. 3 is a rear perspective view of a miniature circuit breaker and a circuit breaker control method.

Fig. 4 is a perspective view of a case in a miniature circuit breaker and a circuit breaker control method.

Fig. 5 is a sectional view of a recess in a miniature circuit breaker and a circuit breaker control method.

Fig. 6 is an internal view of a case in a miniature circuit breaker and a circuit breaker control method.

Fig. 7 is a perspective view of an active unhooking mechanism in a miniature circuit breaker and a circuit breaker control method.

Fig. 8 is a sectional view of a micro circuit breaker and a breaker control method at a first connection groove.

Fig. 9 is a sectional view of a miniature circuit breaker and a circuit breaker control method at a second connection groove.

In the figure: 1 shell, 2 first control mechanism, 3 second control mechanism, 4 first connecting groove, 5 first bolt groove, 6 first bolt, 7 first abutting piece, 8 second connecting groove, 9 second bolt groove, 10 second bolt, 11 second abutting piece, 12 first fixed hook, 13 first movable hook, 14 first insulating column, 15 first connecting piece, 16 first upper pole piece, 17 first lower pole piece, 18 winding coil, 19 magnetic column, 20 first top rod, 21 guide bar, 22 first spacing piece, 23 first guide sleeve, 24 first spring, 25 second fixed hook, 26 second movable hook, 27 second insulating column, 28 second connecting piece, 29 second upper pole piece, 30 second lower pole piece, 31 deformation piece, 32 second top rod, 33 second guide sleeve, 34 second spacing piece, 35 fifth spring, 36 second spring, 37 active unhooking mechanism, 38 vertical rod, 39 third guide sleeve, 40 lifting plate, 41 a third spring, 42 a shifting piece, 43 a shell cover, 44 an elastic lug, 45 bulges, 46 grooves, 47 installation grooves, 48 upper fixing grooves, 49 lower fixing grooves, 50 threaded columns, 51 a first baffle plate, 52 a first U-shaped seat, 53 a second baffle plate, 54 a fourth spring, 55 a second U-shaped seat and 56 a third baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, in an embodiment of the present invention, a miniature circuit breaker and a circuit breaker control method include a housing 1, a first control mechanism 2 is disposed on a top of the housing 1, a second control mechanism 3 is disposed on a bottom of the housing 1, a first connecting slot 4 is fixedly connected to a corner of the top of the housing 1, the first connecting slot 4 is used for connecting to a power line, an opening is disposed on a top surface of the housing 1 corresponding to the first connecting slot 4, a first bolt slot 5 is disposed on a front side of the housing 1 corresponding to the first connecting slot 4, a first bolt 6 is disposed in the first bolt slot 5, one end of the first bolt 6 penetrates through the first bolt slot 5 and is rotatably connected to a first abutting piece 7 after being inserted into the first connecting slot 4, the first bolt 6 is screwed to the first connecting slot 4, a second connecting slot 8 is fixedly connected to a corner of the bottom of the housing 1, the second connecting slot 8 is used for connecting to a power line, an opening is disposed on a bottom surface of the housing 1 corresponding to the second connecting slot 8, a second bolt groove 9 is arranged at the front side of the shell 1 corresponding to the second connecting groove 8, a second bolt 10 is arranged in the second bolt groove 9, one end of the second bolt 10 penetrates through the second bolt groove 9 and is inserted into the second connecting groove 8 to be connected with a second abutting piece 11 in a rotating manner, the second bolt 10 is in threaded connection with the second connecting groove 8, the first control mechanism 2 comprises a first fixed hook 12, a first movable hook 13, a first insulating column 14, a first connecting piece 15, a first upper pole piece 16, a first lower pole piece 17, a winding coil 18, a magnetic column 19, a first ejector rod 20, a guide rod 21, a first limiting piece 22, a first guide sleeve 23, a first spring 24, a first U-shaped seat 52, a second blocking piece 53 and a fourth spring 54, the second control mechanism 3 comprises a second fixed hook 25, a second movable hook 26, a second insulating column 27, a second connecting piece 28, a second upper pole piece 29, a second lower pole piece 30, The deformation piece 31, the second ejector rod 32, the second guide sleeve 33, the second limiting piece 34, the second spring 36, the second U-shaped seat 55, the third baffle 56 and the fifth spring 35, wherein the deformation piece 31 is made of a large-current deformation material, and an arc extinguishing assembly is arranged in the vacancy in the shell 1.

The outer sides of the first fixing hook 12 and the second fixing hook 25 are provided with an active unhooking mechanism 37, and the active unhooking mechanism 37 comprises a vertical rod 38, a third guide sleeve 39, a lifting plate 40, a third spring 41, a shifting piece 42 and a first blocking piece 51.

Vertical rod 38 vertically runs through the top of casing 1, third uide bushing 39 slides the cover and establishes in the outside of vertical rod 38, the top of vertical rod 38 stretch out casing 1 and with lifter plate 40 fixed connection, the outside at vertical rod 38 is established to third spring 41 cover, the top of third spring 41 and casing 1's top inner wall fixed connection, the bottom and the first separation blade 51 fixed connection of third spring 41, first separation blade 51 fixed connection is in the outside of vertical rod 38, plectrum 42 is equipped with two and equal fixed connection on the same side outer wall of vertical rod 38, plectrum 42 corresponds with first fixed hook 12 and second fixed hook 25 respectively, third uide bushing 39 and casing 1 fixed connection.

A shell cover 43 is arranged outside one side of the shell 1, elastic lugs 44 are symmetrically and fixedly connected to four sides of the shell cover 43, protrusions 45 are fixedly connected to the outer walls of the elastic lugs 44, and grooves 46 matched with the protrusions 45 are formed in the shell 1.

Casing 1's one side outer wall fixedly connected with mounting groove 47, fixed slot 48 is gone up to the inboard fixedly connected with in upper portion of mounting groove 47, the lower part inboard of mounting groove 47 is equipped with down fixed slot 49, one side of down fixed slot 49 and the inner wall laminating and the sliding connection of mounting groove 47, the bottom threaded connection of mounting groove 47 has screw thread post 50, the one end of screw thread post 50 inserts in the mounting groove 47 and rotates with the bottom surface of lower fixed slot 49 and be connected, a word groove has been seted up to screw thread post 50's bottom, mounting groove 47, go up fixed slot 48, fixed establishment is constituteed jointly to lower fixed slot 49 and screw thread post 50, fixed establishment is used for with external installation section bar centre gripping fixed.

One end of the first fixed hook 12 is hinged to the inner wall of the housing 1 through a hinge seat, the first U-shaped seat 52 is fixedly connected to the inner side of the housing 1, the first movable hook 13 penetrates through the first U-shaped seat 52 in a sliding manner, the first insulation column 14 is fixedly connected to the end portion of the first movable hook 13, one end of the first insulation column 14 penetrates through the housing 1 and is connected to the housing 1 in a sliding manner, a through hole for the first insulation column 14 to penetrate through is formed in the housing 1, the second baffle 53 is fixedly connected to the first movable hook 13 at the inner side of the first U-shaped seat 52, the fourth spring 54 is sleeved at the outer side of the first movable hook 13, one end of the fourth spring 54 is fixedly connected to the second baffle 53, the other end of the fourth spring 54 is fixedly connected to the inner wall of the first U-shaped seat 52, the first connection piece 15 is fixedly connected to the first movable hook 13 at the outer side of the first U-shaped seat 52, the first upper pole piece 16 and the first lower pole piece 17 are respectively arranged at the outer side of the top and bottom of the first connection piece 15, first pole piece 16 and first lower pole piece 17 and casing 1 fixed connection, first uide bushing 23 and casing 1 fixed connection, the vertical slip of guide bar 21 runs through first uide bushing 23, the bottom and the first spacing piece 22 fixed connection of guide bar 21, the top and the magnetism post 19 fixed connection of guide bar 21, first ejector pin 20 fixed connection is at the top of magnetism post 19, winding coil 18 is around establishing in the outside of magnetism post 19, the top of first ejector pin 20 corresponds with first fixed hook 12, the one end and the first fixed hook 12 fixed connection of first spring 24, the other end and the inner wall fixed connection of casing 1 of first spring 24, first fixed hook 12 corresponds and the adaptation with first movable hook 13.

The second fixed hook 25 corresponds to the second movable hook 26 and is left-falling, one end of the second fixed hook 25 is fixedly connected with the inner wall of the housing 1 through a hinged seat, the second movable hook 26 slidably penetrates through the second U-shaped seat 55, the second U-shaped seat 55 is fixedly connected with the inner wall of the housing 1, the third baffle 56 is fixedly connected with the outer wall of the second movable hook 26 in the second U-shaped seat 55, the fifth spring 35 is arranged between the third baffle 56 and the second U-shaped seat 55, the fifth spring 35 is sleeved outside the second movable hook 26, the second connecting sheet 28 is fixedly connected with the second movable hook 26 at the outside of the second U-shaped seat 55, the second upper pole piece 29 and the second lower pole piece 30 are respectively arranged outside the top bottom of the second connecting sheet 28, the second upper pole piece 29 and the second lower pole piece 30 are fixedly connected with the housing 1, the second insulating column 27 is fixedly connected with the end of the second movable hook 26, one end of the second insulating column 27 penetrates through the housing 1 and is slidably connected with the housing 1, the deformation piece 31 is arranged below the second fixing hook 25 and clamped in the shell 1, the second guide sleeve 33 is arranged above the deformation piece 31, the second guide sleeve 33 is fixedly connected with the shell 1, the second ejector rod 32 is slidably connected to the inner side of the second guide sleeve 33, the bottom end of the second ejector rod 32 is fixedly connected with the second limiting piece 34, the top end of the second ejector rod 32 corresponds to the second fixing hook 25, the second spring 36 is fixedly connected to the top of the second fixing hook 25, and one end of the second spring 36 is fixedly connected with the shell 1.

The first connecting groove 4 is electrically connected with the first upper pole piece 16, the first lower pole piece 17 is electrically connected with the winding coil 18 through a conducting wire, the winding coil 18 is electrically connected with the second upper pole piece 29 through a conducting wire, the second lower pole piece 30 is electrically connected with one end of the deformation piece 31 through an electric wire, the other end of the deformation piece 31 is electrically connected with the second connecting groove 8 through a conducting wire, the non-conductive connecting parts are all non-conductive materials, and the conductive connecting parts are all conductive materials.

A method for controlling a miniature circuit breaker comprises the following steps:

the method comprises the following steps: assembling the circuit breaker, namely firstly, fixedly combining the shell cover 43 with the shell 1 through the matching of the elastic lug 44, the bulge 45 and the groove 46 to form a complete circuit breaker;

step two: installing the circuit breaker, hooking the circuit breaker on the installation section through an upper fixing groove 48 on an installation groove 47, and then rotating a threaded column 50 through a linear groove at the bottom of the threaded column 50, so that the threaded column 50 drives a lower fixing groove 49 to abut against the installation section, and the installation section is clamped between the upper fixing groove 48 and the lower fixing groove 49 to complete the fixation;

step three: connecting external electric wires, namely inserting an incoming electric wire into a first connecting groove 4 through an opening in the top of a shell 1, then inserting a tool into a first bolt groove 5 to screw a first bolt 6, driving a first abutting sheet 7 to extrude and fix the inserted electric wire by the first bolt 6, simultaneously inserting an outgoing electric wire into a second connecting groove 8 through an opening in the bottom of the shell 1, simultaneously inserting a second bolt groove 9 by the tool, screwing a second bolt 10, and driving a second abutting sheet 11 to extrude and fix the electric wire by the second bolt 10, thereby completing the wiring operation;

step four: in operation, the first insulating column 14 is pressed, the first insulating column 14 drives the first movable hook 13 to slide, the driven action causes the end of the first fixed hook 12 to be jacked up, finally, the first movable hook 13 and the first fixed hook 12 are dislocated, at this time, the end of the first fixed hook 12 is reset under the action of the first spring 24, at this time, the first insulating column 14 is loosened, the first movable hook 13 is reset under the action of the first U-shaped seat 52, the second stop piece 53 and the fourth spring 54, at this time, the first movable hook 13 is limited by the first fixed hook 12, so that the top and bottom of the first connecting piece 15 respectively abut against the first upper pole piece 16 and the first lower pole piece 17 to form a passage, then, the second insulating column 27 is pressed, the second insulating column 27 drives the second movable hook 26 to slide, so that the end of the second fixed hook 25 is jacked up, and finally, the second movable hook 26 and the second fixed hook 25 are dislocated, at this time, the second fixed hook 25 is reset under the action of the second spring 36, the second insulating column 27 is released, the second movable hook 26 is reset under the action of the second U-shaped seat 55, the third stop 56 and the fifth spring 35, and the second movable hook 26 is limited by the second fixed hook 25, so that the top and bottom of the second connecting sheet 28 abut against the second upper pole piece 29 and the second lower pole piece 30 respectively to form a passage;

step five: overload protection, when the load in the circuit is large, the winding coil 18 generates magnetism at the moment, the winding coil 18 drives the magnetic column 19 to ascend along the sliding direction of the first guide sleeve 23 and the first guide rod 21, so as to drive the first ejector rod 20 to upwards eject the first fixed hook 12, so that the limitation on the first movable hook 13 is removed, the first movable hook 13 is reset under the left and right of the first U-shaped seat 52, the second baffle 53 and the fourth spring 54, so that the first connecting plate 15 is separated from the first upper pole piece 16 and the first lower pole piece 17, and the circuit breaking is completed;

step six: short-circuit protection, during short circuit, the deformation sheet 31 deforms, the deformation sheet 31 rents the second ejector rod 32, the second ejector rod 32 moves upwards along the second guide sleeve 33, so that the second ejector rod 32 jacks the second fixed hook 25 upwards, the limitation on the second movable hook 26 is removed, at the moment, the second movable hook 26 is reset under the action of the second U-shaped seat 55, the third baffle 56 and the fifth spring 35, and the second connecting sheet 28 is separated from the second upper pole piece 29 and the second lower pole piece 30 to form open circuit;

step seven: the manual switch, manual lift up the lifting plate 40 downwards to montant 38 produces the extrusion through first separation blade 51 to third spring 41, and lifting plate 40 drives montant 38 and prolongs third uide bushing 39 and upwards slides, thereby montant 38 drives plectrum 42 and upwards picks up first fixed hook 12 and second fixed hook 25, removes the fixed of first fixed hook 12 to first movable hook 13, and second fixed hook 25 is to the fixed of second movable hook 26, accomplishes manual disconnection.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (9)

1. A miniature circuit breaker comprising a housing (1), characterized in that: the top of the shell (1) is provided with a first control mechanism (2), the bottom of the shell (1) is provided with a second control mechanism (3), one corner of the top of the shell (1) is fixedly connected with a first connecting groove (4), the top surface of the shell (1) is provided with an opening corresponding to the first connecting groove (4), the front side of the shell (1) is provided with a first bolt groove (5) corresponding to the first connecting groove (4), a first bolt (6) is arranged in the first bolt groove (5), one end of the first bolt (6) penetrates through the first bolt groove (5) and is rotatably connected with a first abutting piece (7) after being inserted into the first connecting groove (4), the first bolt (6) is in threaded connection with the first connecting groove (4), one corner of the bottom of the shell (1) is fixedly connected with a second connecting groove (8), the bottom surface of the shell (1) is provided with an opening corresponding to the second connecting groove (8), the front side of the shell (1) is provided with a second bolt groove (9) corresponding to the second connecting groove (8), a second bolt (10) is arranged in the second bolt groove (9), one end of the second bolt (10) penetrates through the second bolt groove (9) and is inserted into the second connecting groove (8) to be connected with a second abutting piece (11) in a rotating mode, the second bolt (10) is in threaded connection with the second connecting groove (8), the first control mechanism (2) comprises a first fixed hook (12), a first movable hook (13), a first insulation column (14), a first connecting piece (15), a first upper pole piece (16), a first lower pole piece (17), a winding coil (18), a magnetic column (19), a first ejector rod (20), a guide rod (21), a first limiting piece (22), a first guide sleeve (23), a first spring (24), a first U-shaped seat (52), a second blocking piece (53) and a fourth spring (54), and the second control mechanism (3) comprises a second fixed hook (25), a second movable hook (26), The device comprises a second insulating column (27), a second connecting piece (28), a second upper pole piece (29), a second lower pole piece (30), a deformation piece (31), a second ejector rod (32), a second guide sleeve (33), a second limiting piece (34), a second spring (36), a second U-shaped seat (55), a third blocking piece (56) and a fifth spring (35).

2. A miniature circuit breaker according to claim 1, wherein: the outer sides of the first fixing hook (12) and the second fixing hook (25) are provided with an active unhooking mechanism (37) together, and the active unhooking mechanism (37) comprises a vertical rod (38), a third guide sleeve (39), a lifting plate (40), a third spring (41), a shifting piece (42) and a first blocking piece (51).

3. A miniature circuit breaker according to claim 2, wherein: the vertical top that runs through casing (1) in montant (38), third uide bushing (39) slip cover is established in the outside of montant (38), the top of montant (38) stretch out casing (1) and with lifter plate (40) fixed connection, the outside at montant (38) is established in third spring (41), the top of third spring (41) and the top inner wall fixed connection of casing (1), the bottom and first separation blade (51) fixed connection of third spring (41), first separation blade (51) fixed connection is in the outside of montant (38), plectrum (42) are equipped with two and equal fixed connection on the same side outer wall of montant (38), plectrum (42) correspond with first fixed hook (12) and second fixed hook (25) respectively, third uide bushing (39) and casing (1) fixed connection.

4. A miniature circuit breaker according to claim 1, wherein: a shell cover (43) is arranged outside one side of the shell (1), elastic lugs (44) are symmetrically and fixedly connected to four sides of the shell cover (43), protrusions (45) are fixedly connected to the outer wall of each elastic lug (44), and grooves (46) matched with the protrusions (45) are formed in the positions, corresponding to the protrusions (45), of the shell (1).

5. A miniature circuit breaker according to claim 1, wherein: the utility model discloses a fixing mechanism, including casing (1), one side outer wall fixedly connected with mounting groove (47), fixed slot (48) are gone up to the inboard fixedly connected with in upper portion of mounting groove (47), the lower part inboard of mounting groove (47) is equipped with down fixed slot (49), one side of lower fixed slot (49) and the inner wall laminating and the sliding connection of mounting groove (47), the bottom threaded connection of mounting groove (47) has screw thread post (50), the one end of screw thread post (50) is inserted in mounting groove (47) and is rotated with the bottom surface of lower fixed slot (49) and be connected, a word groove has been seted up to the bottom of screw thread post (50), mounting groove (47), go up fixed slot (48), fixed mechanism is constituteed jointly in lower fixed slot (49) and screw thread post (50), fixed mechanism is used for fixed with external installation section bar centre gripping.

6. A miniature circuit breaker according to claim 1, wherein: one end of the first fixed hook (12) is hinged with the inner wall of the shell (1) through a hinged seat, the first U-shaped seat (52) is fixedly connected to the inner side of the shell (1), the first movable hook (13) penetrates through the first U-shaped seat (52) in a sliding mode, the first insulation column (14) is fixedly connected to the end portion of the first movable hook (13), one end of the first insulation column (14) penetrates out of the shell (1) and is connected with the shell (1) in a sliding mode, a through hole for the first insulation column (14) to penetrate out is formed in the shell (1), the second blocking piece (53) is fixedly connected to the position, located on the inner side of the first U-shaped seat (52), the fourth spring (54) is sleeved on the outer side of the first movable hook (13), one end of the fourth spring (54) is fixedly connected with the second blocking piece (53), and the other end of the fourth spring (54) is fixedly connected with the inner wall of the first U-shaped seat (52), the first connecting plate (15) is fixedly connected to the outer side of the first movable hook (13) located on the first U-shaped seat (52), the first upper pole piece (16) and the first lower pole piece (17) are respectively arranged on the outer side of the top bottom of the first connecting plate (15), the first upper pole piece (16) and the first lower pole piece (17) are fixedly connected with the shell (1), the first guide sleeve (23) is fixedly connected with the shell (1), the guide rod (21) vertically slides to penetrate through the first guide sleeve (23), the bottom end of the guide rod (21) is fixedly connected with the first limiting plate (22), the top end of the guide rod (21) is fixedly connected with the magnetic column (19), the first ejector rod (20) is fixedly connected to the top of the magnetic column (19), the winding coil (18) is wound on the outer side of the magnetic column (19), the top end of the first ejector rod (20) corresponds to the first fixed hook (12), one end of the first spring (24) is fixedly connected with the first fixed hook (12), the other end of the first spring (24) is fixedly connected with the inner wall of the shell (1), and the first fixed hook (12) corresponds to and is matched with the first movable hook (13).

7. A miniature circuit breaker according to claim 1, wherein: the second fixed hook (25) corresponds to the second movable hook (26) and is left-falling, one end of the second fixed hook (25) is fixedly connected with the inner wall of the shell (1) through a hinged seat, the second movable hook (26) penetrates through the second U-shaped seat (55) in a sliding manner, the second U-shaped seat (55) is fixedly connected with the inner wall of the shell (1), a third baffle plate (56) is fixedly connected to the outer wall of the second movable hook (26) in the second U-shaped seat (55), a fifth spring (35) is arranged between the third baffle plate (56) and the second U-shaped seat (55), the fifth spring (35) is sleeved on the outer side of the second movable hook (26), the second connecting sheet (28) is fixedly connected to the outer side of the second movable hook (26) in the second U-shaped seat (55), a second upper pole piece (29) and a second lower pole piece (30) are respectively arranged on the outer side of the bottom of the second connecting sheet (28), and a second upper pole piece (29) and a second lower pole piece (30) are fixedly connected with the shell (1), second insulating column (27) fixed connection is in the tip of second activity hook (26), the one end of second insulating column (27) is worn out casing (1) and is with casing (1) sliding connection, deformation piece (31) are established in the below of second fixed hook (25) and its card in casing (1), second uide bushing (33) are established in the top of deformation piece (31), second uide bushing (33) and casing (1) fixed connection, second ejector pin (32) sliding connection is in the inboard of second uide bushing (33), the bottom and the spacing piece (34) fixed connection of second ejector pin (32), the top and the second fixed hook (25) of second ejector pin (32) correspond, second spring (36) fixed connection is at the top of second fixed hook (25), the one end and casing (1) fixed connection of second spring (36).

8. A miniature circuit breaker according to claim 1, wherein: the transformer comprises a first connecting groove (4), a first upper pole piece (16), a first lower pole piece (17), a winding coil (18), a second upper pole piece (29), a second lower pole piece (30), a deformation piece (31) and a second connecting groove (8), wherein the first connecting groove (4) is electrically connected with the first upper pole piece (16), the first lower pole piece (17) is electrically connected with the winding coil (18) through a lead, the winding coil (18) is electrically connected with the second upper pole piece (29) through a lead, the second lower pole piece is electrically connected with one end of the deformation piece (31) through an electric wire, and the other end of the deformation piece (31) is electrically connected with the second connecting groove (8) through a lead.

9. A miniature circuit breaker control method is characterized in that: the method comprises the following steps:

the method comprises the following steps: assembling the circuit breaker, namely firstly, fixedly combining a shell cover (43) with a shell (1) through the matching of an elastic lug (44), a bulge (45) and a groove (46) to form a complete circuit breaker;

step two: the installation of the circuit breaker, hook the circuit breaker on the installation section bar through the upper fixed slot (48) on the installation groove (47), then rotate the threaded column (50) through the slotted groove of the bottom of the threaded column (50), thus the threaded column (50) drives the lower fixed slot (49) to support on the installation section bar, make the installation section bar be grasped between upper fixed slot (48) and lower fixed slot (49), finish fixing;

step three: connecting external electric wires, inserting an incoming electric wire into a first connecting groove (4) through an opening in the top of a shell (1), then inserting a first bolt groove (5) through a tool to screw a first bolt (6), driving a first abutting sheet (7) to extrude and fix the inserted electric wire by the first bolt (6), simultaneously inserting an outgoing electric wire into a second connecting groove (8) through an opening in the bottom of the shell (1), simultaneously inserting a second bolt groove (9) by the tool, screwing a second bolt (10), and driving a second abutting sheet (11) by the second bolt (10) to extrude and fix the electric wire to finish wiring operation;

step four: the operation is carried out, the first insulating column (14) is pressed, the first insulating column (14) drives the first movable hook (13) to slide, the end portion of the first fixed hook (12) is jacked up by following, finally, the first movable hook (13) and the first fixed hook (12) are dislocated, at the moment, the end portion of the first fixed hook (12) resets under the action of the first spring (24), at the moment, the first insulating column (14) is loosened, the first movable hook (13) resets under the action of the first U-shaped seat (52), the second baffle plate (53) and the fourth spring (54), at the moment, the first movable hook (13) is limited by the first fixed hook (12), so that the top and bottom portions of the first connecting plate (15) respectively abut against the first upper pole piece (16) and the first lower pole piece (17) to form a passage, then, the second insulating column (27) is pressed, and the second insulating column (27) drives the second movable hook (26) to slide, so that the end part of the second fixed hook (25) is jacked up, finally the second movable hook (26) and the second fixed hook (25) are dislocated, at the moment, the second fixed hook (25) resets under the action of the second spring (36), at the moment, the second insulating column (27) is loosened, the second movable hook (26) resets under the action of the second U-shaped seat (55), the third baffle plate (56) and the fifth spring (35), and at the moment, the second movable hook (26) is limited by the second fixed hook (25), so that the top and bottom parts of the second connecting sheet (28) respectively abut against the second upper pole piece (29) and the second lower pole piece (30) to form a passage;

step five: overload protection, when the load in the circuit is large, the winding coil (18) generates magnetism at the moment, the winding coil (18) drives the magnetic column (19) to ascend along the sliding direction of the first guide sleeve (23) and the first guide rod (21), so that the first ejector rod (20) is driven to upwards eject the first fixed hook (12), the limitation on the first movable hook (13) is removed, the first movable hook (13) is reset under the left and right of the first U-shaped seat (52), the second baffle plate (53) and the fourth spring (54), the first connecting plate (15) is separated from the first upper pole piece (16) and the first lower pole piece (17), and the circuit breaking is completed;

step six: short-circuit protection, wherein during short circuit, the deformation sheet (31) deforms, the deformation sheet (31) rents a second ejector rod (32), the second ejector rod (32) moves upwards along a second guide sleeve (33), so that the second ejector rod (32) jacks up a second fixed hook (25), the limitation on a second movable hook (26) is removed, at the moment, the second movable hook (26) is reset under the action of a second U-shaped seat (55), a third blocking sheet (56) and a fifth spring (35), and a second connecting sheet (28) is separated from a second upper pole piece (29) and a second lower pole piece (30) to form open circuit;

step seven: hand switch, manual lift board (40) of lifting downwards, thereby montant (38) produce the extrusion through first separation blade (51) to third spring (41), lifting board (40) drive montant (38) prolong third uide bushing (39) and upwards slide, thereby montant (38) drive plectrum (42) upwards pick up first fixed hook (12) and second fixed hook (25), remove first fixed hook (12) fixed to first movable hook (13), second fixed hook (25) are to the fixed of second movable hook (26), accomplish manual disconnection.

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