CN110265273A - A kind of miniature circuit breaker of superelevation short circuit breaking capacity - Google Patents
A kind of miniature circuit breaker of superelevation short circuit breaking capacity Download PDFInfo
- Publication number
- CN110265273A CN110265273A CN201910606159.0A CN201910606159A CN110265273A CN 110265273 A CN110265273 A CN 110265273A CN 201910606159 A CN201910606159 A CN 201910606159A CN 110265273 A CN110265273 A CN 110265273A
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- Prior art keywords
- circuit breaker
- arc
- fixedly connected
- contact
- dynamic
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/06—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a kind of miniature circuit breakers of superelevation short circuit breaking capacity, including case for circuit breaker, arc-chutes are installed on the left of case for circuit breaker intracavity bottom, magnetic conduction sheet is installed on the right side of case for circuit breaker intracavity bottom, top on the left of case for circuit breaker inner cavity is equipped with electromagnetic release mechanism, and electromagnetic release mechanism includes static contact, iron core spring, dynamic iron core, electromagnetic coil, the first magnetic yoke, tripping mandril and stationary contact.The present invention is used cooperatively by current-limiting mechanism, electromagnetic release mechanism, handle spring, U type connecting rod, dynamic contact mechanism, Re Yuandao arc mechanism, adjusting screw rod nut, magnetic conduction sheet, arc-chutes, case for circuit breaker and handle, it solves existing miniature circuit breaker and does not have the function of preventing from bursting when in use, often the dynamic and static contact of miniature circuit breaker can all dissolve at a high temperature of electric arc generates, interiors of products air instantaneous expansion under high temperature action, is directed at the problem of product is burst.
Description
Technical field
The present invention relates to miniature circuit breaker technical field, specially a kind of miniature circuit breaker of superelevation short circuit breaking capacity.
Background technique
Miniature circuit breaker is also known as miniature circuit breaker, and miniature circuit breaker is mainly used for industrial, commercial, high-rise and residential premises etc.
Various places.
The golden clock Muller L7-63 series small breaker of Germany, specified running and positioning are currently on the market
10KA, L7-63 are introduced after domestic production because of the specified operation short circuit of the exhausted mass production producer of the factors such as production technology, assembly technology point
The specified running and positioning of the product of cutting capacity 6A~25A is 10KA, and 32A~63A can only accomplish 6KA, this patent improvement
The L7-63 series of design not by the constraint of the factors such as production technology, assembly technology, at low cost, structure is simple, 6A~63A series
The specified running and positioning of product can accomplish that 20KA, existing miniature circuit breaker do not have the function for preventing from bursting when in use
Can, often the dynamic and static contact of miniature circuit breaker can all dissolve at a high temperature of electric arc generates, and interiors of products air is in high temperature action
Lower instantaneous expansion, is directed at the problem of product is burst.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of miniature circuit breaker of superelevation short circuit breaking capacity, having is prevented
The advantages of product is burst solves existing miniature circuit breaker and does not have the function of preventing from bursting when in use, often small-sized disconnected
The dynamic and static contact of road device can all dissolve at a high temperature of electric arc generates, and interiors of products air instantaneous expansion under high temperature action is led
The problem of being burst to product.
(2) technical solution
To realize the above-mentioned purpose for preventing product from bursting, the invention provides the following technical scheme: a kind of superelevation short circuit breaking capacity
Miniature circuit breaker, including case for circuit breaker is equipped with arc-chutes, the open circuit on the left of the case for circuit breaker intracavity bottom
Magnetic conduction sheet is installed, the top on the left of the case for circuit breaker inner cavity is equipped with electromagnetic trip machine on the right side of device bottom of shell inner cavity
Structure, the electromagnetic release mechanism include static contact, iron core spring, dynamic iron core, electromagnetic coil, the first magnetic yoke, tripping mandril and quiet
Contact, the bottom on the right side of the case for circuit breaker inner cavity are equipped with Re Yuandao arc mechanism, the heat member by adjusting screw rod nut
Dao Hu mechanism includes leader, bimetal leaf, terminal screw, wire frame and arc striking piece, the top installation of Re Yuandao arc mechanism
Current limiting mechanism, the current-limiting mechanism include elastic slice, bracket, dead man armature sub-assembly and the second magnetic yoke, the current-limiting mechanism
Top is equipped with dynamic contact mechanism, and the dynamic contact mechanism includes lock, tripping, hollow shaft, lock reset spring, tripping company
Bar, hollow shaft sleeve, moving contact, clamping plate, tension spring, tubular rivet and fixing rivet are equipped at the top of the dynamic contact mechanism U-shaped
Connecting rod is equipped with handle at the top of the U type connecting rod, and the back side of the handle is flexibly connected with the inner wall of case for circuit breaker, institute
It states and is fixedly connected with handle spring on the right side of handle, the right side of the handle spring is fixedly connected with the inner wall of case for circuit breaker.
Preferably, it is fixedly connected on the left of the right side of the static contact and stationary contact, the top of the static contact and tripping
The bottom of mandril is fixedly connected, and is fixedly connected on the right side of the top of the tripping mandril and the first magnetic yoke, the tripping mandril
It is fixedly connected, is fixedly connected on the right side of the left side of the static contact and iron core spring, the iron on the right side of left side and electromagnetic coil
The inner cavity of core spring and the surface activity of dynamic iron core connect.
Preferably, it is fixedly connected on the left of the right side of the leader and arc striking piece, the right side of the arc striking piece and wire frame
Left side be flexibly connected by terminal screw, the arc striking piece is fixedly connected with bimetal leaf.
Preferably, the right side of the elastic slice is flexibly connected with the left side of bracket, the right side of the bracket and dead man armature group
The left side of component is flexibly connected, and the bottom of the dead man armature sub-assembly is connect with the top movable of the second magnetic yoke.
Preferably, the bottom of the lock is flexibly connected with the top of tripping by latching reset spring, the hollow shaft
Inner cavity and the surface activity of hollow shaft sleeve connect, the moving contact is flexibly connected with tripping, the left side of the tension spring and clamping plate
It is fixedly connected, the clamping plate is flexibly connected by tubular rivet with trip link, and the current-limiting mechanism and fixing rivet activity connect
It connects.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of miniature circuit breakers of superelevation short circuit breaking capacity, have following beneficial
Effect:
1, the present invention leads arc machine by current-limiting mechanism, electromagnetic release mechanism, handle spring, U type connecting rod, dynamic contact mechanism, hot member
Structure, adjusting screw rod nut, magnetic conduction sheet, arc-chutes, case for circuit breaker and handle be used cooperatively, and having reached prevents product from bursting
Advantage solves existing miniature circuit breaker and does not have the function of preventing from bursting when in use, and often miniature circuit breaker is dynamic and static
Contact can all dissolve at a high temperature of electric arc generates, and interiors of products air instantaneous expansion under high temperature action is directed at product and bursts
The problem of.
2, the present invention is by current-limiting mechanism, as long as reaching 2.0KA or more, miniature circuit breaker when occurring short circuit current in circuit
Will rapid-releasing, to achieve the purpose that current limliting.
3, the present invention disconnects switch, plays metering function by lock, more effective to improve the specified operation of miniature circuit breaker
Short circuit breaking capacity.
Detailed description of the invention
Fig. 1 is off-state schematic diagram of the present invention；
Fig. 2 is the right view of dynamic contact mechanism of the present invention；
Fig. 3 is the front view of dynamic contact mechanism of the present invention；
Fig. 4 is the back view of dynamic contact mechanism of the present invention；
Fig. 5 is the schematic diagram of electromagnetic release mechanism of the present invention；
Fig. 6 is the schematic diagram of current-limiting mechanism of the present invention；
Fig. 7 is the schematic diagram of Re Yuandao arc of the present invention mechanism；
Fig. 8 is closed state schematic diagram of the present invention.
In figure: 1, latching；2, tripping；3, hollow shaft；4, reset spring is latched；5, trip link；6, hollow shaft sleeve；7, it moves
Contact；8, clamping plate；9, tension spring；10, tubular rivet；11, fixing rivet；12, current-limiting mechanism；1201, elastic slice；1202, bracket；
1203, dead man armature sub-assembly；1204, the second magnetic yoke；13, electromagnetic release mechanism；1301, static contact；1302, iron core spring；
1303, dynamic iron core；1304, electromagnetic coil；1305, the first magnetic yoke；1306, tripping mandril；1307, stationary contact；14, handle bullet
Spring；15, U type connecting rod；16, dynamic contact mechanism；17, Re Yuandao arc mechanism；1701, leader；1702, bimetal leaf；1703, wiring
Screw；1704, wire frame；1705, arc striking piece；18, adjusting screw rod nut；19, magnetic conduction sheet；20, arc-chutes；21, outside breaker
Shell；22, handle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " rear end ", " two
The orientation or positional relationship of the instructions such as end ", " one end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " setting
Have ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, may be a detachable connection, or one
Ground connection；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, it can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
Lock 1 of the invention, tripping 2, hollow shaft 3, lock reset spring 4, trip link 5, hollow shaft sleeve 6, moving contact
7, clamping plate 8, tension spring 9, tubular rivet 10, fixing rivet 11, current-limiting mechanism 12, elastic slice 1201, bracket 1202, the combination of dead man armature
Part 1203, the second magnetic yoke 1204, electromagnetic release mechanism 13, static contact 1301, iron core spring 1302, dynamic iron core 1303, electromagnetic wire
Enclose the 1304, first magnetic yoke 1305, tripping mandril 1306, stationary contact 1307, handle spring 14, U type connecting rod 15, dynamic contact mechanism
16, Re Yuandao arc mechanism 17, leader 1701, bimetal leaf 1702, terminal screw 1703, wire frame 1704, arc striking piece 1705, tune
Saving bolt and nut 18, magnetic conduction sheet 19, arc-chutes 20, case for circuit breaker 21 and 22 component of handle is universal standard part or this field
The component that technical staff knows, structure and principle are all that this technology personnel can be learnt by technical manual or by conventional real
Proved recipe method is known.
Please refer to Fig. 1-8, a kind of miniature circuit breaker of superelevation short circuit breaking capacity, including case for circuit breaker 21, breaker
Arc-chutes 20 are installed on the left of 21 intracavity bottom of shell, magnetic conduction sheet 19 is installed on the right side of 21 intracavity bottom of case for circuit breaker,
Top on the left of 21 inner cavity of case for circuit breaker is equipped with electromagnetic release mechanism 13, electromagnetic release mechanism 13 include static contact 1301,
Iron core spring 1302, dynamic iron core 1303, electromagnetic coil 1304, the first magnetic yoke 1305, tripping mandril 1306 and stationary contact 1307, it is quiet
The right side of contact 1301 is fixedly connected with the left side of stationary contact 1307, the top of static contact 1301 and the bottom of tripping mandril 1306
Be fixedly connected, tripping mandril 1306 top be fixedly connected with the right side of the first magnetic yoke 1305, thread off mandril 1306 left side and
The right side of electromagnetic coil 1304 is fixedly connected, and the left side of static contact 1301 is fixedly connected with the right side of iron core spring 1302, iron core
The inner cavity of spring 1302 is connect with the surface activity of dynamic iron core 1303, and the bottom on the right side of 21 inner cavity of case for circuit breaker is by adjusting spiral shell
Stem nut 18 is equipped with Re Yuandao arc mechanism 17, and Re Yuandao arc mechanism 17 includes leader 1701, bimetal leaf 1702, terminal screw
1703, the right side of wire frame 1704 and arc striking piece 1705, leader 1701 is fixedly connected with the left side of arc striking piece 1705, arc striking piece
1705 right side is flexibly connected with the left side of wire frame 1704 by terminal screw 1703, arc striking piece 1705 and bimetal leaf 1702
It is fixedly connected, the top of Re Yuandao arc mechanism 17 is equipped with current-limiting mechanism 12, and current-limiting mechanism 12 includes elastic slice 1201, bracket
1202, dead man armature sub-assembly 1203 and the second magnetic yoke 1204, the right side of elastic slice 1201 are flexibly connected with the left side of bracket 1202,
The right side of bracket 1202 is flexibly connected with the left side of dead man armature sub-assembly 1203, the bottom of dead man armature sub-assembly 1203 and the
The top movables of two magnetic yokes 1204 connects, by current-limiting mechanism 12, as long as when occur in circuit short circuit current reach 2.0KA with
On, miniature circuit breaker will rapid-releasing, to achieve the purpose that current limliting, the top of current-limiting mechanism 12 is equipped with dynamic contact mechanism
16, dynamic contact mechanism 16 includes lock 1, tripping 2, hollow shaft 3, lock reset spring 4, trip link 5, hollow shaft sleeve 6, dynamic touching
First 7, clamping plate 8, tension spring 9, tubular rivet 10 and fixing rivet 11 latch 1 bottom and the top of tripping 2 and reset bullet by lock
Spring 4 is flexibly connected, and the inner cavity of hollow shaft 3 is connect with the surface activity of hollow shaft sleeve 6, and moving contact 7 is flexibly connected with tripping 2, is drawn
The left side of spring 9 is fixedly connected with clamping plate 8, and clamping plate 8 is flexibly connected by tubular rivet 10 with trip link 5, current-limiting mechanism 12 and
Fixing rivet 11 is flexibly connected, and by lock 1, is disconnected switch, is played metering function, and it is specified more effectively to improve miniature circuit breaker
Running and positioning, the top of dynamic contact mechanism 16 are equipped with U type connecting rod 15, and the top of U type connecting rod 15 is equipped with handle
22, the back side of handle 22 is flexibly connected with the inner wall of case for circuit breaker 21, and the right side of handle 22 is fixedly connected with handle spring 14,
The right side of handle spring 14 is fixedly connected with the inner wall of case for circuit breaker 21.
Implementation method: the groove on arc striking piece 1705 being worked good with dynamic lug plate convex platform and is welded with electric resistance welding, then
Bimetal leaf 1702 in welding form Fig. 7 equal to increasing by a circle line blowout coil between arc striking piece 1705 and increase product
Arc blow-out, magnetic field strength, while increasing the resistance of arc striking piece 1705, when miniature circuit breaker is under short circuit current effect, moving contact 7
When being fully disconnected, then the arc current that moving contact 7 passes on arc striking piece 1705 is exactly a fixed value, according to Ohm's law: I=
U/R；When increasing the resistance on arc striking piece 1705, arc voltage is accordingly reduced, the current limiting capacity of product is effectively improved, effectively improves
Miniature circuit breaker nominal short-circuit breaking capacity.
When in use, at normal operating conditions (closure), moving contact 7 is rotated clockwise certain angle, tension spring 9
Certain kinetic energy is stored, the stationary contact 1307 on moving contact 7 and static contact 1301 is in close contact, effect of the moving contact 7 in tension spring 9
It is lower to generate certain pressure.
When rated operational current be In(≤63A), normal load electric current be 1.0In(A) when the present invention can work normally.
When load current is 1.13In(A) when, then worked in 1 hour in the event of overloading be do not thread off it is (cold
State)；When rising in load current 5S and stablize in 1.45In(A) when, miniature circuit breaker threaded off (hot) in 1 hour；When negative
Load electric current be 2.55In(A) when, miniature circuit breaker is in 1~60S(≤32A) in tripping, the product of > 32A in 1~120s take off
Button, here it is the overload protections of miniature circuit breaker.
When miniature circuit breaker in the event of overloading: bimetal leaf 1702 is bending to the right, drive trip link 5 dragging lock
1 rotation, rotates tripping 2 also, and for 7 upper end of moving contact under the kinetic energy effect that tension spring 9 discharges, lower end rotates certain angle counterclockwise
Degree, moving contact 7 and 1301 upper static contact of static contact, 1307 quick separating, moving contact 7 reach the shape that Fig. 1 is shown in 0.1 second
State is exactly the off-state of miniature circuit breaker of the present invention, and (arcdrop is made to reach maximum value in 0.1 second) disconnects in contact
Moment generates electric arc, and electric arc flows through galvanic circle when contact separates, and along stationary contact under the action of the magnetic field force that electric current generates
First 1301 and moving contact 7 surface at normal state motion, when moving contact 7 is moved to close to when opening away from the limit, the top of moving contact 7
Head is close to arc striking piece 1705, electric arc fracture at this time and under the action of a magnetic force, along arc striking piece 1705 and the entrance of static contact 1301
In arc-chutes 20, electric arc is cut into multistage electric arc by metal grid in arc-chutes 20, to make arc extinction, here it is small-sized
The specific overload protection process of breaker.
When short circuit occurs for the load end of miniature circuit breaker, and short circuit current reaches the condition for generating action current, electromagnetism
The magnetic force that coil 1304 generates attracts dynamic dynamic iron core 1303 to compress iron core spring 1302, and tripping mandril 1306 hits lock 1, tripping
2 rotations, switch disconnect, this is the short-circuit protection process of miniature circuit breaker.
The important meaning of miniature circuit breaker increasing large opening:
A, current technical miniature circuit breaker: the series of products such as C45, C65, NC100, L7 are because by product structure and designing technique
Limitation, open away from all in < 5mm, increasing the opening away from exactly increasing the electric clearance of product, improve making for product of miniature circuit breaker
Use security performance.
B, increase the opening away from can effectively increase miniature circuit breaker nominal short-circuit breaking capacity of miniature circuit breaker.According to than
Ao-Sha Wa law: miniature circuit breaker under the electrodynamic action that short circuit electric current (or manually applying test current) generates,
Moving contact disconnects automatically, electric arc will be generated between dynamic and static contact, the electric arc energy of generation is I2ts.
According to electric arc theory: it can start with from the extinguishing of single-phase short circuit electric arc:
When short circuit occurs, equation are as follows:
In formula:- short circuiting arc electric current
- arc voltage
- line inductance
- line resistance
By formula:
The change rate of line current, i.e.,It is positive, indicates that arc current is in ascent stage.
, i.e.,, indicate that arc current ascent stage terminates, arc current reaches maximum value, i.e.,。
, i.e.,It being negative, indicates that arc current is in upper depression of order section, arc current is begun to decline from maximum value,
Until arc extinction.
Short circuit current extinguishing process figure
In figure:- generate arc duration (i.e. short circuit current occur moment play contact and flick moment stop)
- mechanism action the time
- electric arc enters the grid time
- arc extinction the time
Point,The arc current of pointFor the maximum value of arc current。
It can be seen that reaching the condition of quick current-limiting are as follows:
- there is the time of electric arcWant small；
- mechanism action the timeWant short；
The time that-electric arc enters grid (reachesPoint) time want short；
The arc quenching effect of-arc-chutes will be got well.
It influencesFactor:
Obviously occur electric arc as early as possible (i.e.It is minimum), realize it is impossible by buckle releaser tripping, it depends on acting on
Electric power (repulsion) on contact.
It can be seen that moving contact 7 flicks under the action of electric power from the above electric arc theory, (the I in arc energy2Ts it) produces
Raw arc current (I) is a constant, dynamic and static to open away from bigger, when short circuit occurs for route or applies test short circuit current, open circuit
The arcdrop generated between the dynamic and static contact of device is bigger, and with regard to small, the electric arc generated between dynamic and static contact more holds arc current
Easily extinguish.
Although an embodiment of the present invention has been shown and described, to those skilled in the art, the present invention can be with
There are various modifications and variations.All interior any modification, equivalent replacement, improvement and so in spirit and principles of the present invention,
It should be included within scope of the presently claimed invention.
Claims (5)
1. a kind of miniature circuit breaker of superelevation short circuit breaking capacity, including case for circuit breaker (21), it is characterised in that: the open circuit
It is equipped with arc-chutes (20) on the left of device shell (21) intracavity bottom, the right side installation of case for circuit breaker (21) intracavity bottom
Have magnetic conduction sheet (19), the top on the left of case for circuit breaker (21) inner cavity is equipped with electromagnetic release mechanism (13), the electromagnetism
Tripping mechanism (13) includes static contact (1301), iron core spring (1302), dynamic iron core (1303), electromagnetic coil (1304), first
Magnetic yoke (1305), thread off mandril (1306) and stationary contact (1307), the bottom on the right side of case for circuit breaker (21) inner cavity passes through
Adjusting screw rod nut (18) is equipped with Re Yuandao arc mechanism (17), and Re Yuandao arc mechanism (17) includes leader (1701), double
Sheet metal (1702), terminal screw (1703), wire frame (1704) and arc striking piece (1705), Re Yuandao arc mechanism (17)
Top is equipped with current-limiting mechanism (12), and the current-limiting mechanism (12) includes elastic slice (1201), bracket (1202), the combination of dead man armature
Part (1203) and the second magnetic yoke (1204) are equipped with dynamic contact mechanism (16) at the top of the current-limiting mechanism (12), the dynamic touching
Head mechanism (16) includes lock (1), tripping (2), hollow shaft (3), lock reset spring (4), trip link (5), hollow shaft sleeve
(6), moving contact (7), clamping plate (8), tension spring (9), tubular rivet (10) and fixing rivet (11), the dynamic contact mechanism (16)
Top is equipped with U type connecting rod (15), is equipped with handle (22) at the top of the U type connecting rod (15), the back side of the handle (22)
It is flexibly connected with the inner wall of case for circuit breaker (21), is fixedly connected with handle spring (14) on the right side of the handle (22), it is described
The right side of handle spring (14) is fixedly connected with the inner wall of case for circuit breaker (21).
2. a kind of miniature circuit breaker of superelevation short circuit breaking capacity according to claim 1, it is characterised in that: the stationary contact
It is fixedly connected on the left of the right side and stationary contact (1307) of head (1301), the top of the static contact (1301) and tripping mandril
(1306) bottom is fixedly connected, and is fixedly connected on the right side of the top and the first magnetic yoke (1305) of tripping mandril (1306),
It is fixedly connected on the right side of the left side and electromagnetic coil (1304) of tripping mandril (1306), the left side of the static contact (1301)
It is fixedly connected on the right side of iron core spring (1302), the inner cavity of the iron core spring (1302) and the surface of dynamic iron core (1303) are living
Dynamic connection.
3. a kind of miniature circuit breaker of superelevation short circuit breaking capacity according to claim 1, it is characterised in that: the leader
(1701) it is fixedly connected on the left of right side and arc striking piece (1705), the right side and wire frame (1704) of the arc striking piece (1705)
Left side be flexibly connected by terminal screw (1703), the arc striking piece (1705) is fixedly connected with bimetal leaf (1702).
4. a kind of miniature circuit breaker of superelevation short circuit breaking capacity according to claim 1, it is characterised in that: the elastic slice
(1201) right side is flexibly connected with the left side of bracket (1202), the right side of the bracket (1202) and dead man armature sub-assembly
(1203) left side is flexibly connected, the bottom of the dead man armature sub-assembly (1203) and the top movable of the second magnetic yoke (1204)
Connection.
5. a kind of miniature circuit breaker of superelevation short circuit breaking capacity according to claim 1, it is characterised in that: the lock
(1) bottom and the top of tripping (2) are flexibly connected by latching reset spring (4), the inner cavity of the hollow shaft (3) with it is hollow
The surface activity of axle sleeve (6) connects, and the moving contact (7) is flexibly connected with tripping (2), the left side of the tension spring (9) and clamping plate
(8) it is fixedly connected, the clamping plate (8) is flexibly connected by tubular rivet (10) with trip link (5), the current-limiting mechanism (12)
It is flexibly connected with fixing rivet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606159.0A CN110265273A (en) | 2019-07-05 | 2019-07-05 | A kind of miniature circuit breaker of superelevation short circuit breaking capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606159.0A CN110265273A (en) | 2019-07-05 | 2019-07-05 | A kind of miniature circuit breaker of superelevation short circuit breaking capacity |
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| CN110265273A true CN110265273A (en) | 2019-09-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534382A (en) * | 2019-09-25 | 2019-12-03 | 周义才 | A kind of DPN air switch or leakage switch dynamic contact mechanism |
| CN112382550A (en) * | 2020-11-30 | 2021-02-19 | 周义才 | Magnetic arc-blowing circuit breaker with double arc-extinguishing chambers |
| CN114582683A (en) * | 2022-03-10 | 2022-06-03 | 中群电气有限公司 | Intelligent miniature circuit breaker |
-
2019
- 2019-07-05 CN CN201910606159.0A patent/CN110265273A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534382A (en) * | 2019-09-25 | 2019-12-03 | 周义才 | A kind of DPN air switch or leakage switch dynamic contact mechanism |
| CN112382550A (en) * | 2020-11-30 | 2021-02-19 | 周义才 | Magnetic arc-blowing circuit breaker with double arc-extinguishing chambers |
| CN114582683A (en) * | 2022-03-10 | 2022-06-03 | 中群电气有限公司 | Intelligent miniature circuit breaker |
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