CN111029831B - Circuit protection device capable of automatically breaking during short circuit - Google Patents
Circuit protection device capable of automatically breaking during short circuit Download PDFInfo
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- CN111029831B CN111029831B CN202010038825.8A CN202010038825A CN111029831B CN 111029831 B CN111029831 B CN 111029831B CN 202010038825 A CN202010038825 A CN 202010038825A CN 111029831 B CN111029831 B CN 111029831B
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- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 19
- 239000012212 insulator Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000007373 indentation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000005288 electromagnetic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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Abstract
The invention discloses a circuit protection device capable of automatically breaking when in short circuit, which comprises a machine body, wherein a retraction cavity 70 is arranged in the machine body 10, a winding cavity 73 is arranged on the left side of the retraction cavity 70, a starting cavity 75 is arranged on the lower side of the winding cavity 73, an electromagnetic cavity 71 is arranged on the left side of the starting cavity 75, a pulley cavity 74 communicated with the electromagnetic cavity 71 is arranged on the upper side of the electromagnetic cavity 71, a braking cavity 72 is arranged on the left side of the electromagnetic cavity 71, and a retraction device 76 for pulling a plug is arranged in the retraction cavity 70.
Description
Technical Field
The invention relates to the technical field of circuit protection, in particular to a circuit protection device capable of automatically breaking when in short circuit.
Background
At present, along with the development of society, circuits are more and more numerous, and circuit accidents are more and more frequent, wherein short circuit is one of main accidents in the circuit, when the current of an electric wire exceeds the current-carrying capacity, the heating of the electric wire is intensified, the insulating capability of the electric wire is reduced, the electric wire is aged at an accelerated speed to cause the insulating capability to be lost, the electric wire is broken down by voltage, a metal wire core is directly contacted with or conducted through electric arc to form short circuit, abnormal high temperature or electric arc electric spark is generated when the electric wire is in short circuit, nearby combustible substances are caused to be ignited, and the electric short circuit can also cause the electric equipment to carry dangerous voltage.
Disclosure of Invention
Aiming at the technical defects, the invention provides a circuit protection device capable of automatically breaking when in short circuit, which can overcome the defects.
The invention relates to a circuit protection device capable of automatically breaking when in short circuit, which comprises a machine body, wherein a retraction cavity is arranged in the machine body, a winding cavity is arranged on the left side of the retraction cavity, a starting cavity is arranged on the lower side of the winding cavity, an electromagnetic cavity is arranged on the left side of the starting cavity, a pulley cavity communicated with the electromagnetic cavity is arranged on the upper side of the electromagnetic cavity, a braking cavity is arranged on the left side of the electromagnetic cavity, and a retraction device for pulling a plug is arranged in the retraction cavity;
the retraction device comprises a main motor fixedly arranged on the lower side wall of the retraction cavity, the main motor is in power connection with a motor shaft, a first bevel gear is fixedly arranged on the motor shaft, the front side wall of the retraction cavity is in rotary connection with a first rotating shaft, the first rotating shaft is fixedly provided with a first gear, the rear side of the first rotating shaft is fixedly provided with a bevel gear meshed with the first rotating shaft, the rear side wall of the retraction cavity is in sliding connection with a moving rack meshed with the first gear, the moving rack is fixedly provided with a connecting rod, the upper side wall of the retraction cavity is in sliding connection with an insulator, the left side of the insulator is fixedly provided with a first fixed block fixedly connected with the connecting rod, a telescopic spring is connected between the first fixed block and the left side wall of the retraction cavity, the right side of the insulator is fixedly provided with a plug, two plug pins are fixedly arranged in the plug, and the, the plug pin at the lower side is connected with a live wire;
and a circuit breaking device for breaking a circuit is arranged in the electromagnetic cavity.
Preferably, the lateral wall has set firmly electrically conductive shell on the start-up chamber, the lateral wall has set firmly the conducting block respectively about the conducting shell, two be connected with the temperature sensing metal strip between the conducting block, the contact metal pole has set firmly on the temperature sensing metal strip, the lateral wall has set firmly the start-up shell under the conducting shell, the lateral wall has set firmly the start-up conductor respectively about the start-up shell, it is connected with contact block to rotate on the start-up conductor, contact block with be connected with the torsional spring between the start-up conductor, can make contact block keeps the level, be connected with the start on the conducting block the circuit of main motor has set firmly the protection resistor who prevents the short circuit in the left electric wire, protection resistor with the temperature sensing metal strip connects in parallel on main circuit.
Preferably, a first fixing plate is fixedly arranged on the rear side wall of the winding cavity, two symmetrical second rotating shafts are rotatably connected to the first fixing plate, a first rotating wheel is fixedly arranged on the second rotating shaft, a rotating torsion spring is connected between the first rotating wheel and the second rotating shaft, a zero line is wound on the first rotating wheel on the upper side, a fire line is wound on the first rotating wheel on the lower side, a separation plate is fixedly arranged between the first fixing plate and the left side wall of the winding cavity, two rotating blocks are respectively and fixedly arranged on the lower side wall of the winding cavity and the upper side surface of the separation plate, a rotating column is rotatably connected between each rotating block and the separation plate, a reset torsion spring is connected between the rotating column and the rotating block, the zero line is wound on the lower side of the rotating column on the upper side, the fire line is wound on the rotating column, and the zero line is accumulated on the separation plate, the live wire is piled up in the wire winding chamber, wire winding chamber back lateral wall rotates and is connected with the positioning pulley, rotate on the post the live wire extends left and winds positioning pulley downwardly extending.
Preferably, the circuit breaking device comprises a fourth rotating shaft fixedly installed on the left and right side walls of the electromagnetic cavity, an electromagnetic metal rod is fixedly arranged on the fourth rotating shaft, a coil post is fixedly arranged on the electromagnetic metal rod, the live wire is wound on the coil post, the rear side wall of the pulley cavity is rotatably connected with two third rotating shafts which are symmetrical up and down, a second rotating wheel is fixedly arranged on the third rotating shaft, the second rotating wheel on the upper side is wound with the zero wire, the second rotating wheel on the lower side is wound with the live wire on the coil post, a second fixed block is fixedly arranged on the side wall of the braking cavity, a limit rod is fixedly arranged on the second fixed block, a second fixed plate and a second fixed plate are fixedly arranged on the right side wall of the braking cavity, a contact switch connected with the live wire is rotatably connected on the second fixed plate, and a reset spring is connected between the contact switch and the second fixed block, a synchronous lever is rotatably connected on the second fixing plate, a synchronous rod is rotatably connected between the synchronous lever and the contact switch, the left side wall of the brake cavity is fixedly provided with a live wire conductor connected with the other live wire, the right side of the synchronization lever is rotatably connected with a lifting rod, the lower side of the lifting rod is fixedly provided with a butting block, the lower side wall of the brake cavity is fixedly provided with a fixed bottom plate, the fixed bottom plate is connected with a brake magnet in a sliding way, the left side surface of the brake magnet is fixedly provided with a brake sliding rod which is connected with the left side wall of the brake cavity in a sliding way, a brake spring is connected between the brake magnet and the left side wall of the brake cavity, the left side wall of the brake cavity is connected with a movable rod in a sliding way, the right side of the moving rod is fixedly provided with a brake block which slides on the fixed bottom plate, the lower side of the brake block is fixedly provided with a positioning lug, and the fixed bottom plate is provided with a groove which can clamp the positioning lug.
The beneficial effects are that: a circuit protector for automatically breaking circuit in short circuit features that a retraction unit can connect the circuit of motor to pull plug off in time to prevent damage to electric appliance, and a circuit breaker can disconnect the circuit of same line and line in short circuit and directly cut off the power supply.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a circuit protection device with an automatic short-circuit function according to the present invention, which is a front view;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a partial enlarged view of the invention at B in fig. 1.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The invention will now be described in detail with reference to fig. 1-3, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a circuit protection device capable of automatically breaking when in short circuit, which comprises a machine body 10, wherein a retraction cavity 70 is arranged in the machine body 10, a winding cavity 73 is arranged at the left side of the retraction cavity 70, a starting cavity 75 is arranged at the lower side of the winding cavity 73, an electromagnetic cavity 71 is arranged at the left side of the starting cavity 75, a pulley cavity 74 communicated with the electromagnetic cavity 71 is arranged at the upper side of the electromagnetic cavity 71, a braking cavity 72 is arranged at the left side of the electromagnetic cavity 71, a retraction device 76 for pulling a plug is arranged in the retraction cavity 70, the retraction device 76 comprises a main motor 11 fixedly arranged on the lower side wall of the retraction cavity 70, the main motor 11 is in power connection with a motor shaft 12, a first bevel gear 13 is fixedly arranged on the motor shaft 12, a first rotating shaft 14 is rotatably connected to the front side wall of the retraction cavity 70, a first gear 15 is fixedly arranged on the first rotating shaft 14, a bevel gear meshed with the first, the utility model discloses a flexible circuit breaker, including indentation chamber 70, first gear 15, movable rack 16, connecting rod 17, insulator 65, first fixed block 18, first plug foot 21, upside, plug foot 21 is connected with zero line 45, and the downside plug foot 21 is connected with live wire 44, be equipped with breaking device 77 of open circuit in the electromagnetism chamber 71, move movable rack 16 and set firmly connecting rod 17 on the movable rack 16, the lateral wall sliding connection has insulator 65 on the indentation chamber 70, insulator 65 left side set firmly with first fixed block 18 of connecting rod 17 fixed connection, first fixed block 18 with be connected with expanding spring 19 between the indentation chamber 70 left side wall, the insulator 65 right side set firmly plug 20, set firmly two plug feet 21 in the plug 20, the upside the plug foot.
Advantageously, a conductive housing 34 is fixedly arranged on the upper side wall of the starting cavity 75, conductive blocks 33 are fixedly arranged on the left side wall and the right side wall of the conductive housing 34 respectively, a thermosensitive metal strip 37 is connected between the two conductive blocks 33, a contact metal rod 38 is fixedly arranged on the thermosensitive metal strip 37, a starting housing 35 is fixedly arranged on the lower side wall of the conductive housing 34, starting conductors 36 are fixedly arranged on the left side wall and the right side wall of the starting housing 35 respectively, a contact block 39 is rotatably connected to the starting conductors 36, a torsion spring is connected between the contact block 39 and the starting conductors 36 to keep the contact block 39 horizontal, a circuit for starting the main motor 11 is connected to the conductive blocks 33, a protection resistor 32 for preventing short circuit is fixedly arranged in a wire on the left side, the protection resistor 32 and the thermosensitive metal strip 37 are connected in parallel to the main circuit, so that when the circuit is short circuit, a large amount of current flows through the, generating high temperature to bend the heat-sensitive metal strip 37, pushing the abutting block 58 to move, contacting the starting conductor 36, switching on the circuit of the main motor 11, starting the main motor 11, rotating the motor shaft 12 to drive the first gear 15 to rotate, moving the moving rack 16 to drive the first fixing block 18, the insulator 65 and the plug 20 to move, and pulling out the plug.
Beneficially, a first fixing plate 22 is fixedly arranged on the rear side wall of the winding cavity 73, two symmetrical second rotating shafts 23 are rotatably connected to the first fixing plate 22, a first rotating wheel 24 is fixedly arranged on the second rotating shaft 23, a rotating torsion spring 53 is connected between the first rotating wheel 24 and the second rotating shaft 23, the zero line 45 is wound on the first rotating wheel 24 on the upper side, the live wire 44 is wound on the first rotating wheel 24 on the lower side, a separation plate 52 is fixedly arranged between the first fixing plate 22 and the left side wall of the winding cavity 73, two rotating blocks 25 are respectively and fixedly arranged on the lower side wall of the winding cavity 73 and the upper side surface of the separation plate 52, a rotating column 27 is rotatably connected between each rotating block 25 and the separation plate 52, a reset torsion spring 26 is connected between the rotating column 27 and the rotating block 25, and the zero line 45 is wound on the rotating column 27 on the upper side, the downside it has to wind on the post 27 to rotate the live wire 44, zero line 45 piles up on the division board 52, live wire 44 piles up in the wire winding chamber 73, the lateral wall rotates and is connected with positioning pulley 29 behind the wire winding chamber 73, on the post 27 rotates live wire 44 extends left and winds positioning pulley 29 downwardly extending, thereby when extracting during plug 20, live wire 44 with zero line 45 is in wind under the effect of rotating torsional spring 53 around on first runner 24, make live wire 44 with zero line 45 keeps the tensioning state, inserts when needs plug 20, the pulling plug 20, two on electrically conductive shell 34 and right side rotate post 27 and rotate, make live wire 44 with zero line 45 prolongs.
Beneficially, the circuit breaker 77 includes a fourth rotating shaft 41 fixedly installed on left and right side walls of the electromagnetic cavity 71, an electromagnetic metal rod 42 is fixedly installed on the fourth rotating shaft 41, a coil post 43 is fixedly installed on the electromagnetic metal rod 42, the live wire 44 is wound on the coil post 43, two third rotating shafts 30 which are symmetrical up and down are rotatably connected on a rear side wall of the pulley cavity 74, a second rotating wheel 31 is fixedly installed on the third rotating shaft 30, the zero line 45 is wound on the second rotating wheel 31 on the upper side, the live wire 44 on the coil post 43 is wound on the second rotating wheel 31 on the lower side, a second fixing block 47 is fixedly installed on an upper side wall of the braking cavity 72, a limit rod 48 is fixedly installed on the second fixing block 47, a second fixing plate 46 and a second fixing plate 55 are fixedly installed on a right side wall of the braking cavity 72, a contact switch 50 connected with the live wire 44 is rotatably connected on the second fixing plate 46, a return spring 49 is connected between the contact switch 50 and the second fixed block 47, a synchronization lever 56 is rotatably connected to the second fixed plate 55, a synchronization rod 54 is rotatably connected between the synchronization lever 56 and the contact switch 50, a live wire conductor 51 connected to another live wire 44 is fixedly arranged on the left side wall of the braking cavity 72, a lifting rod 57 is rotatably connected to the right side of the synchronization lever 56, a butting block 58 is fixedly arranged on the lower side of the lifting rod 57, a fixed bottom plate 59 is fixedly arranged on the lower side wall of the braking cavity 72, a braking magnet 60 is slidably connected to the fixed bottom plate 59, a braking slide rod 61 slidably connected to the left side wall of the braking cavity 72 is fixedly arranged on the left side surface of the braking magnet 60, a braking spring 62 is connected between the braking magnet 60 and the left side wall of the braking cavity 72, a moving rod 28 is slidably connected to the left side wall of the braking cavity 72, and a braking block 40 sliding on the fixed bottom plate 59 is fixedly arranged, a positioning projection 63 is fixedly arranged on the lower side of the brake block 40, a groove capable of clamping the positioning projection 63 is arranged on the fixed bottom plate 59, so that when an electric circuit is short-circuited, the live wire 44 on the coil post 43 passes through a large amount of current to generate an electromagnetic effect, a magnetic field is generated, the brake magnet 60 is attracted to enable the brake magnet 60 to slide rightwards on the fixed bottom plate 59 to push the brake block 40 to move rightwards, the positioning projection 63 is clamped in the groove in the fixed bottom plate 59, the brake block 40 pushes the abutting block 58 to move upwards to enable the synchronization lever 56 to rotate, the contact switch 50 is pulled downwards to enable the live wire 44 to be disconnected, when the circuit is normal, the moving rod 28 is pulled to drive the brake block 40 to move leftwards, and the contact switch 50 rotates upwards under the tension of the return spring 49 to abut on the limiting rod 48, and remains in contact with the live conductor 51 to complete the circuit.
In the initial state, the main motor 11 is not started, the heat sensitive metal strip 37 is kept straight, the contact switch 50 is in contact with the live conductor 51, and the brake pad 40 is in contact with the brake magnet 60.
When the circuit is short-circuited, a large amount of current flows through the heat-sensitive metal strip 37 to generate high temperature, so that the heat-sensitive metal strip 37 is bent, the abutting block 58 is pushed to move, the starting conductor 36 is contacted, the circuit of the main motor 11 is connected, the main motor 11 is started, the motor shaft 12 rotates to drive the first gear 15 to rotate, the moving rack 16 moves to drive the first fixed block 18, the insulator 65 and the plug 20 to move, the plug is pulled out, when the plug 20 is pulled out, the live wire 44 and the zero wire 45 are wound on the first rotating wheel 24 under the action of the rotating torsion spring 53 to keep the live wire 44 and the zero wire 45 in a tensioning state, when the plug 20 needs to be plugged in, the plug 20 is pulled, the conductive shell 34 and the two rotating columns 27 on the right side rotate to prolong the live wire 44 and the zero wire 45, when the circuit is short-circuited, the live wire 44 on the coil column 43 generates an electromagnetic effect through the large amount of current, the brake magnet 60 slides rightwards on the fixed bottom plate 59 to push the brake block 40 to move rightwards, the positioning lug 63 is clamped in a groove in the fixed bottom plate 59, the brake block 40 pushes the abutting block 58 to move upwards to enable the synchronous lever 56 to rotate, the contact switch 50 is pulled downwards to disconnect the live wire 44, when the circuit is normal, the moving rod 28 is pulled to drive the brake block 40 to move leftwards, the contact switch 50 rotates upwards under the tension of the reset spring 49 to abut on the limiting rod 48 to keep in contact with the live wire conductor 51, and the circuit is switched on.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (1)
1. The utility model provides a circuit protection device of automatic disconnection during short circuit, includes the organism, its characterized in that: a retraction cavity is arranged in the machine body, a winding cavity is arranged on the left side of the retraction cavity, a starting cavity is arranged on the lower side of the winding cavity, an electromagnetic cavity is arranged on the left side of the starting cavity, a pulley cavity communicated with the electromagnetic cavity is arranged on the upper side of the electromagnetic cavity, a braking cavity is arranged on the left side of the electromagnetic cavity, and a retraction device for pulling out a plug is arranged in the retraction cavity; the retraction device comprises a main motor fixedly arranged on the lower side wall of the retraction cavity, the main motor is in power connection with a motor shaft, a first bevel gear is fixedly arranged on the motor shaft, the front side wall of the retraction cavity is in rotary connection with a first rotating shaft, the first rotating shaft is fixedly provided with a first gear, the rear side of the first rotating shaft is fixedly provided with a bevel gear meshed with the first rotating shaft, the rear side wall of the retraction cavity is in sliding connection with a moving rack meshed with the first gear, the moving rack is fixedly provided with a connecting rod, the upper side wall of the retraction cavity is in sliding connection with an insulator, the left side of the insulator is fixedly provided with a first fixed block fixedly connected with the connecting rod, a telescopic spring is connected between the first fixed block and the left side wall of the retraction cavity, the right side of the insulator is fixedly provided with a plug, two plug pins are fixedly arranged in the plug, and the, the plug pin at the lower side is connected with a live wire; a circuit breaking device for breaking a circuit is arranged in the electromagnetic cavity; the starting device comprises a starting cavity, a starting conductor, a conducting shell, a starting conductor, a contact block, a torsion spring, a protection resistor and a thermosensitive metal strip, wherein the conducting shell is fixedly arranged on the upper side wall of the starting cavity, the conducting blocks are fixedly arranged on the left and right side walls of the conducting shell respectively, the thermosensitive metal strip is connected between the two conducting blocks, the contact metal strip is fixedly provided with a contact metal rod, the starting shell is fixedly arranged on the lower side wall of the conducting shell, the starting conductor is fixedly arranged on the left and right side walls of the starting shell respectively, the contact block is rotatably connected to the starting conductor, the torsion spring is connected between the contact block and the starting conductor to enable the contact block to be horizontal, a circuit for starting the main motor is connected; a first fixing plate is fixedly arranged on the rear side wall of the winding cavity, two symmetrical second rotating shafts are rotatably connected to the first fixing plate, a first rotating wheel is fixedly arranged on the second rotating shaft, a rotating torsion spring is connected between the first rotating wheel and the second rotating shaft, a zero line is wound on the first rotating wheel on the upper side, a fire line is wound on the first rotating wheel on the lower side, a separation plate is fixedly arranged between the first fixing plate and the left side wall of the winding cavity, two rotating blocks are respectively fixedly arranged on the lower side wall of the winding cavity and the upper side surface of the separation plate, a rotating column is rotatably connected between each rotating block and the separation plate, a reset torsion spring is connected between the rotating column and the rotating block, the zero line is wound on the rotating column on the upper side, the fire line is wound on the rotating column on the lower side, the zero line is stacked on the separation plate, and the fire line is stacked in the winding cavity, the rear side wall of the winding cavity is rotatably connected with a positioning pulley, and the live wire on the rotating column extends leftwards and downwards around the positioning pulley; the circuit breaking device comprises a fourth rotating shaft fixedly installed on the left side wall and the right side wall of the electromagnetic cavity, an electromagnetic metal bar is fixedly arranged on the fourth rotating shaft, a coil post is fixedly arranged on the electromagnetic metal bar, the live wire is wound on the coil post, the rear side wall of the pulley cavity is rotatably connected with two third rotating shafts which are symmetrical up and down, a second rotating wheel is fixedly arranged on the third rotating shaft, the second rotating wheel on the upper side is wound with the zero wire, the second rotating wheel on the lower side is wound with the live wire on the coil post, the side wall of the braking cavity is fixedly provided with a second fixed block, a limiting rod is fixedly arranged on the second fixed block, a second fixed plate and a second fixed plate are fixedly arranged on the right side wall of the braking cavity, a contact switch connected with the live wire is rotatably connected on the second fixed plate, and a reset spring is connected between the contact switch and the second fixed block, a synchronous lever is rotatably connected on the second fixing plate, a synchronous rod is rotatably connected between the synchronous lever and the contact switch, the left side wall of the brake cavity is fixedly provided with a live wire conductor connected with the other live wire, the right side of the synchronization lever is rotatably connected with a lifting rod, the lower side of the lifting rod is fixedly provided with a butting block, the lower side wall of the brake cavity is fixedly provided with a fixed bottom plate, the fixed bottom plate is connected with a brake magnet in a sliding way, the left side surface of the brake magnet is fixedly provided with a brake sliding rod which is connected with the left side wall of the brake cavity in a sliding way, a brake spring is connected between the brake magnet and the left side wall of the brake cavity, the left side wall of the brake cavity is connected with a movable rod in a sliding way, the right side of the moving rod is fixedly provided with a brake block which slides on the fixed bottom plate, the lower side of the brake block is fixedly provided with a positioning lug, and the fixed bottom plate is provided with a groove which can clamp the positioning lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038825.8A CN111029831B (en) | 2020-01-14 | 2020-01-14 | Circuit protection device capable of automatically breaking during short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038825.8A CN111029831B (en) | 2020-01-14 | 2020-01-14 | Circuit protection device capable of automatically breaking during short circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111029831A CN111029831A (en) | 2020-04-17 |
| CN111029831B true CN111029831B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010038825.8A Active CN111029831B (en) | 2020-01-14 | 2020-01-14 | Circuit protection device capable of automatically breaking during short circuit |
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| CN (1) | CN111029831B (en) |
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| CN111900582B (en) * | 2020-07-16 | 2022-03-08 | 安徽渡江电缆集团有限公司 | High-pressure explosion-proof computer cable |
| CN111799609A (en) * | 2020-07-28 | 2020-10-20 | 余欣 | Block chain computer lab socket safety protection system |
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| CN1728470A (en) * | 2005-07-26 | 2006-02-01 | 陈景正 | Multifunctional open circuit protection socket |
| CN2838092Y (en) * | 2005-11-15 | 2006-11-15 | 王允超 | Automatic spiral rain and snow electric supply installation |
| CN201601333U (en) * | 2010-01-29 | 2010-10-06 | 深大宇电器(深圳)有限公司 | Socket |
| CN107030354A (en) * | 2017-03-29 | 2017-08-11 | 浦江之音科技有限公司 | A kind of Manual welding device |
| CN109326933B (en) * | 2018-10-27 | 2020-01-14 | 中山市家的电器有限公司 | Socket with good safety |
| CN209266710U (en) * | 2018-12-04 | 2019-08-16 | 徐州立雄智能科技有限公司 | A kind of higher optoelectronic device protective device of safety |
| CN110350372B (en) * | 2019-07-17 | 2020-12-04 | 安徽龙和电力集团有限公司 | Electric power safety protection socket based on magnetic force is detained |
| CN110661140A (en) * | 2019-09-20 | 2020-01-07 | 佛山职业技术学院 | High-temperature automatic-ejection plug |
-
2020
- 2020-01-14 CN CN202010038825.8A patent/CN111029831B/en active Active
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Effective date of registration: 20210129 Address after: 518000 electric power dispatching and communication building, 4020 Shennan East Road, Luohu District, Shenzhen, Guangdong Applicant after: Shenzhen Power Supply Co.,Ltd. Applicant after: SHENZHEN NEW ENERGY POWER DEVELOPMENT AND DESIGN INSTITUTE LTD. Address before: 315000 No.71 Houda street, Zhaobaoshan street, Zhenhai District, Ningbo City, Zhejiang Province Applicant before: Ningbo Lixiang Electronics Co.,Ltd. |
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