CN1199215C - Circuit breaker mechanism for a rotary contact system - Google Patents

Circuit breaker mechanism for a rotary contact system Download PDF

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Publication number
CN1199215C
CN1199215C CN01800498.9A CN01800498A CN1199215C CN 1199215 C CN1199215 C CN 1199215C CN 01800498 A CN01800498 A CN 01800498A CN 1199215 C CN1199215 C CN 1199215C
Authority
CN
China
Prior art keywords
mentioned
contact assembly
rotating contact
crank
breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN01800498.9A
Other languages
Chinese (zh)
Other versions
CN1404614A (en
Inventor
R·N·卡斯顿圭
R·L·格林伯格
D·S·克里斯滕森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of CN1404614A publication Critical patent/CN1404614A/en
Application granted granted Critical
Publication of CN1199215C publication Critical patent/CN1199215C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms

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  • Breakers (AREA)

Abstract

The present invention relates to a rotary contact circuit breaker. A crank is used to connect a switch mechanism to a rotary contact electrode construction. With the crank, the mechanism and the electrode construction are singly optimized without affecting each other. Particularly, with the crank, the mechanism can deliver the maximum torque to the electrode construction.

Description

The circuit breaker mechanism that is used for rotary contact system
Invention field
The present invention relates to be used for the mechanism of molding outer casing circuit-breaker, its can open, close and trip position between switch rotation contact structures.
Background technology
The present invention relates to the molding outer casing circuit-breaker, its have be used for open, close and trip position between the mechanism of switch rotary contact system.
United States Patent (USP) 5,281, a kind of molding outer casing circuit-breaker is described in 776 (' 776), and it has the toggle link type mechanism that is used for the switch rotary contact system.This mechanism adopts a lower link that directly is connected with driving shaft, and this driving shaft extends through contact system and makes its rotation, as shown in Figure 1.The crank that is connected in same drive pin is used to drive another pin that also extends through contact system.Because driving shaft passes contact system, be impossible with this optimum location, it can cause the geometrical constraint that how much power can be sent to rotor to from switching mechanism.The performance level that this circuit-breaker that usually limits employing ' 776 switching mechanisms can be realized.
Therefore, wish switching mechanism optimization so that the power that increases is passed to rotary contact system.
Consider that also wish to be described in connection between mechanism and the contact system in conjunction with improved switching mechanism, this contact system allows the placement of this mechanism and the flexibility of design.
Summary of the invention
According to the present invention, a kind of circuit breaker mechanism is provided, it comprises that one has the body side frame of connection carriage thereon.One elbow formula connecting rod, it comprises the upper links that is connected to this carriage with first end and second end, and the lower link that is connected in upper links second end by central spindle of the spring.The crank part that is connected in body side frame is connected in lower link.This crank provides the output torque that is produced by this mechanism.
Also according to the present invention, first and second extend through rotating contact assembly.This first therewith crank connect, with along with the state variation of circuit breaker mechanism close and the enable possition between drive this rotating contact assembly.
Description of drawings
From following description to illustrative examples of the present invention, can obviously find out other advantage and characteristics, it provides as just non-limitative example and expression in the accompanying drawings, wherein:
Fig. 1 is the cutaway view of prior art mechanism in the closed position;
Fig. 2 is the top perspective of circuit breaker in a circuit according to the invention;
Fig. 3 is the anterior plan view of element of the present invention as shown in Figure 2 in the closed position;
Fig. 4 is the anterior plan view that is in the element of the present invention as shown in Figure 2 of enable possition;
Fig. 5 is the anterior plan view that is in the element of the present invention as shown in Figure 2 of trip position.
Embodiment
Referring now to Fig. 2, circuit breaker 10 comprises a base portion 22 and a lid 24 in a circuit according to the invention.Be encapsulated within base portion 22 and the lid 24 is four each electrode 14C, 14L, 14R, 14Ns corresponding with the respective phase in the circuit.Each electrode 14C, 14L, 14R, 14N contain respectively can load and rotating contact assembly 16C, 16L, 16R and the 16N of cut-off current.Driving shaft 18 connects four electrode 14C, 14L, 14R, 14N.
In addition, contre electrode 14C by mechanism assembly 12 across.This mechanism 12 is connected in electrode 14C, 14L, 14R by driving shaft 18.Electrode 14C, 14L, 14R can operate with the operation of response means 12 between three positions are promptly opened, closed or trip and move.
As shown in Figure 3, each electrode 14 comprises rotor 60 and a pair of removable contact point 28,28 ' of putting contact arm 26.Cooperate static contact point 30,30 ' with this in the time of should being in illustrated off-position in mechanism to removable contact point 28,28 '.With static contact point 30,30 ' brazing filler metal or be welded in load buss 32 and wiring brace 34 respectively.Rotor 60 pivots on the pin 61 that is supported by the modular box body (not shown) in inner arm (not shown) or the base portion 22.Crank 62 is connected in rotating contact assembly 16C with mechanism 12.Crank 62 pivots around the pin 61 that is assembled into body side frame 13.Be appreciated that rotating contact assembly 16R, 16L, 16N can be identical with rotating contact assembly 16C.The operation of rotating contact assembly 16C with at United States Patent (USP) SN09/087 co-applications and that be hereby expressly incorporated by reference on May 29th, 1998, that describes in 038 is basic identical.
Mechanism 12 comprises the lower link 38 that is connected in crank 62 by connector pin 39.Opposite end from the lower link 38 of crank is connected in upper links 40 by central spindle of the spring 48.This upper links 40 is connected in carriage 42 by the pin 56 that is connected in the bolt mechanism (not shown) successively.Mechanism's spring 50 is connected between the pin 52 on central spindle of the spring 48 and the handgrip 46.Enter when contacting the further counter rotation of anti-locking mechanism 12 with carriage 42 at the pin 58 that is connected in upper links 40.
The torque capacity that can be produced by mechanism 12 is the power F and the decision of momentum arm of transmitting by lower link 38 by from mechanism's spring 50.Momentum arm shown in Figure 3 is orthogonal distance d.This orthogonal distance d is the length of the cross line of the position from crank pivot 61 to power F.Multiply by long-pending apart from d because moment of torsion is power F, can find out obviously that big more apart from d for a given mechanism, the moment of torsion of generation is big more.When bottom connecting rod 38 during perpendicular to the straight line of connecting crank pivot 61 and connecting pin 39, this distance and moment of torsion can maximize.In the present invention, pin 39 only is connected in crank 62 with lower link 38.It should be noted that in the mechanism of prior art, pin 39 still extends through and connect the drive pin of all rotors.
The element of rotating contact assembly 16C usually can not make drive pin place this optimization position.For example, as shown in Figure 3, if pin 39 is used as driving shaft to connect all rotating contact assemblies, then it need directly pass contact arm 26.Like this, as the mechanism arrangement that hope one is optimized, need are thrown off from driving shaft lower link 38 and are connected with rotating contact assembly 16C.The present invention has realized this point by lower link 38 is connected in crank 62, and wherein crank 62 is sent to driving shaft with power successively.So driving shaft 18 can be positioned the optional position of rotor and not influence the producible torque capacity of mechanism.By using crank 62, rotating contact assembly 16C or mechanism assembly 12 can be optimized and do not damage the performance of another element, thus the subassembly that allows the maximum amount of flexibility and still keeping of the design of circuit-breaker to optimize.
With reference to Fig. 4, in the normal switch operation, make handgrip 46 inhour rotations to forward circuit-breaker 10 to pass from opening.When making handgrip 46 rotations, the position of spring 50 can be shifted to the left side from the right side of pivot 56.The center of mechanism 12 is crossed in this motion, so the power that is stored in the spring makes mechanism 12 open rotating contact assembly 16C, 16R, 16L, 16N.This opening movement separates removable contact point 28,28 ' with static contact point 30,30 ', thereby prevents that any electric current from flowing through circuit-breaker 10.
When circuit-breaker trip unit (not shown) detected improper situation, release bar mechanism (not shown) can be rotated in a clockwise direction carriage 42.Door bolt and trip unit are similar to the United States Patent (USP) 4,789,848 that is hereby expressly incorporated by reference.The final motion of carriage 42 makes rotating contact assembly 16C by 38 rotations of upper links 40 and lower link, and removable contact point 28,28 ' is separated with static contact point 30,30 '.The separation of contact point makes any electric current cessation of flow that passes circuit-breaker 10.
Should be understood that when circuit-breaker 10 is in the closed position, big load is put on the driving shaft 18 by mechanism 12 and rotating contact assembly 16C, 16L, 16R, 16N.These loads trend towards deflection driven axle 18 or reverse rotating contact assembly 16C, 16L, 16R, 16N.Axle 18 deflection trend be reduced in widely static contact point 30,30 ' and removable contact point 28,28 ' between contact depression or contact pressure, this pressure causes lower than desired performance.In order to remedy or proofread and correct this bending, additional have second 19 so that extra intensity to be provided.
With reference to Fig. 2 and 3, the axle 19 its extend through be connected rotating contact assembly 16C, 16L, 16R and 16N rotatably aspect be similar to driving shaft 18.Yet axle 19 is not attached to crank 62, and it allows where just axle 19 positions in office are connected in rotating contact assembly 16C, 16L, 16R, 16N and do not influence the load of above-mentioned optimization crank.Although this axle 19 is not connected in crank 62, observed very large contact depression.For example, when the contact of the industrial electro circuit breaker of measuring 480V, 600A was caved in, the engagement concavity that has additional axle 19 was trapped in outermost electrodes 14N and goes up than only having the big by 75% of driving shaft 18.
Though described the preferred embodiments of the present invention, those skilled in the art can obviously find out can do many distortion and change, and therefore, preferably the present invention can't help to limit in this specific disclosed content.

Claims (8)

1. mechanism that is used for the multi-electrode circuit-breaker, it comprises:
At least one body side frame;
One crank part, it is rotatably connected in above-mentioned body side frame and has first and second ends;
One first rotating contact assembly, it is installed in abutting connection with above-mentioned crank rotation; And
One first, it is connected in first end and above-mentioned first rotating contact assembly of above-mentioned crank, and one second, it is positioned to away from second end of described crank and is connected in above-mentioned rotating contact assembly.
2. mechanism as claimed in claim 1, it also comprises:
One second rotating contact assembly, it is in abutting connection with above-mentioned first rotating contact assembly and be connected in above-mentioned first and second.
3. mechanism as claimed in claim 2, it also comprises:
One the 3rd rotating contact assembly, it is in abutting connection with above-mentioned first rotating contact assembly and be connected in above-mentioned first and second.
4. mechanism as claimed in claim 3, it also comprises:
One the 4th rotating contact assembly, it is in abutting connection with above-mentioned the 3rd rotating contact assembly and be connected in above-mentioned first and second.
5. multi-electrode circuit-breaker, it comprises:
One base portion;
One is installed on first body side frame of above-mentioned base portion;
One crank part, it is rotatably connected in above-mentioned body side frame and has one first and second end;
One first rotating contact assembly, its rotation are installed within the adjacency above-mentioned base portion of above-mentioned crank;
One first, it is connected in first end and above-mentioned first rotating contact assembly of above-mentioned crank, and
One second, it is positioned to away from second end of described crank and is connected in above-mentioned first rotating contact assembly.
6. circuit-breaker as claimed in claim 5, it also comprises:
One second rotating contact assembly, its rotation are installed within the adjacency above-mentioned base portion of above-mentioned first rotating contact assembly and are connected in above-mentioned first and second.
7. circuit-breaker as claimed in claim 6, it also comprises:
One the 3rd rotating contact assembly, its rotation are installed within the adjacency above-mentioned base portion of above-mentioned first rotating contact assembly and are connected in above-mentioned first and second.
8. circuit-breaker as claimed in claim 7, it also comprises:
One the 4th contact assembly, its rotation are installed within the adjacency above-mentioned base portion of above-mentioned the 3rd rotating contact assembly and are connected in above-mentioned first and second.
CN01800498.9A 2001-04-09 2001-04-09 Circuit breaker mechanism for a rotary contact system Expired - Fee Related CN1199215C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/007271 WO2002082487A1 (en) 2001-04-09 2001-04-09 Circuit breaker mechanism for a rotary contact system

Publications (2)

Publication Number Publication Date
CN1404614A CN1404614A (en) 2003-03-19
CN1199215C true CN1199215C (en) 2005-04-27

Family

ID=21742381

Family Applications (1)

Application Number Title Priority Date Filing Date
CN01800498.9A Expired - Fee Related CN1199215C (en) 2001-04-09 2001-04-09 Circuit breaker mechanism for a rotary contact system

Country Status (4)

Country Link
EP (1) EP1388158B1 (en)
CN (1) CN1199215C (en)
MX (1) MXPA01011428A (en)
WO (1) WO2002082487A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4395022B2 (en) * 2004-07-13 2010-01-06 三菱電機株式会社 Circuit breaker
KR100662752B1 (en) * 2005-10-04 2007-01-02 엘에스산전 주식회사 Multi pole circuit breaker
KR100689324B1 (en) * 2005-10-05 2007-03-08 엘에스산전 주식회사 Multi pole circuit breaker
US7800007B2 (en) * 2007-06-26 2010-09-21 General Electric Company Circuit breaker subassembly apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789848A (en) * 1987-09-03 1988-12-06 General Electric Company Molded case circuit breaker latch and operating mechanism assembly
FR2682531B1 (en) * 1991-10-15 1993-11-26 Merlin Gerin MULTIPOLAR CIRCUIT BREAKER WITH SINGLE POLE BLOCKS.
FR2687249B1 (en) * 1992-02-07 1994-04-01 Merlin Gerin CONTROL MECHANISM OF A MOLDED BOX CIRCUIT BREAKER.
US6114641A (en) * 1998-05-29 2000-09-05 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers

Also Published As

Publication number Publication date
MXPA01011428A (en) 2003-08-20
WO2002082487A1 (en) 2002-10-17
CN1404614A (en) 2003-03-19
EP1388158A1 (en) 2004-02-11
EP1388158B1 (en) 2008-09-10

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C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20050427

Termination date: 20100409