AU2005205771A1 - Electromagnetic trip device and electrical switchgear apparatus comprising same - Google Patents

Electromagnetic trip device and electrical switchgear apparatus comprising same Download PDF

Info

Publication number
AU2005205771A1
AU2005205771A1 AU2005205771A AU2005205771A AU2005205771A1 AU 2005205771 A1 AU2005205771 A1 AU 2005205771A1 AU 2005205771 A AU2005205771 A AU 2005205771A AU 2005205771 A AU2005205771 A AU 2005205771A AU 2005205771 A1 AU2005205771 A1 AU 2005205771A1
Authority
AU
Australia
Prior art keywords
vane
trip device
blade
armature
lugs
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.)
Granted
Application number
AU2005205771A
Other versions
AU2005205771B2 (en
Inventor
Alain Karczewski
Audrey Olivier
Nadine Serrano
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of AU2005205771A1 publication Critical patent/AU2005205771A1/en
Application granted granted Critical
Publication of AU2005205771B2 publication Critical patent/AU2005205771B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/32Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/60Mechanical arrangements for preventing or damping vibration or shock
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • H01H50/30Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

P001 Section 29 Regulation 3.2(2)
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Application Number: Lodged: Invention Title: Electromagnetic trip device and electrical switchgear apparatus comprising same The following statement is a full description of this invention, including the best method of performing it known to us: 1 ELECTROMAGNETIC TRIP DEVICE AND ELECTRICAL SWITCHGEAR APPARATUS COMPRISING SAME.
Background of the invention The present invention relates to an electromagnetic trip device comprising a U-shaped armature the ends whereof form two polar surfaces, a vane pivoting with respect to the armature and able to be moved onto said polar surfaces to close the magnetic circuit formed by the armature and vane, a permanent magnet for polarising the magnetic circuit, a trip coil surrounding the magnetic circuit and able to counteract the force of the magnet so as to move the vane, a resetting pin of the vane, a blade designed to dampen the impact of the resetting forces and a return spring of the vane.
State of the art Many electromagnetic trip devices such as those described in the documents EP 911,850, EP 829,895 and DE 4,110,660 do not have devices designed to dampen the impact of the resetting forces.
The document DE 3,528,470 describes a trip device comprising a damping device with a blade. However, in this device, swivelling of the vane is achieved by means of an add-on part placed between the vane and the armature, and the spring is fixed onto a salient part formed on the vane, the assembly therefore presenting a complicated structure.
Object of the invention The present invention proposes a trip device of simplified design and a switchgear apparatus comprising same.
For this purpose, it is an object of the present invention to provide a trip device of the previously mentioned kind, this trip device being characterized in that the above-mentioned blade comprises articulation pivots of the vane with respect to the armature.
According to a particular embodiment of the invention, the blade comprises two lugs extending on each side of the vane and comprising articulation pivots.
According to a particular feature, the lugs extend in substantially perpendicular planes to the main plane of the blade.
Advantageously, the lugs and articulation pivots are cast with the blade.
According to another feature, the above-mentioned two lugs are housed in a housing provided at the end of one of the wings of the armature.
According to another feature, the above-mentioned pivots are formed by angular parts formed on the lugs and operating in conjunction with an inside wall situated in the abovementioned housing.
According to another feature, the angle of the above-mentioned angular parts is chosen so as to limit opening of the vane during assembly of the trip device.
According to another feature, the blade comprises a part in the form of a latch designed to enable latching of a spring performing biasing of the vane away from the polar surfaces of the armature and against the action of the permanent magnet.
According to another feature, the blade comprises a stop limiting the movement of the vane towards the side opposite the articulation.
Advantageously, the stop is formed by two edges of the blade respectively belonging to two recesses provided on each side of the blade and designed to respectively receive two branches situated at the end of one of the wings of the armature with respect to which said vane is articulated.
According to another feature, the blade presents the shape of an arc of a circle the radius whereof is defined so as to bias the vane onto its rear articulation stop when resetting is performed via the pin.
r According to another feature the above-mentioned lugs respectively comprise two bosses opposite one another, located respectively on the internal face of said lugs and housed in the above-mentioned recesses of the blade, said bosses being designed to perform lateral positioning of the vane and blade with respect to the armature.
It is a further object of the present invention to provide a switchgear apparatus comprising an electromagnetic trip device comprising the above-mentioned features taken either alone or in combination.
Brief description of the drawings But other advantages and features of the invention will become more clearly apparent from the following detailed description which refers to the accompanying drawings given for example purposes only and in which: -Figure 1 is a side view of an electromagnetic trip device according to the invention, in the loaded position, -Figure 2 is a top view of the blade called the damper blade, and -Figure 3 is a side view of the previous view.
Detailed description of a preferred embodiment In figure 1, a high-sensitivity electromagnetic trip device can be seen designed to be integrated in a differential switch. This trip device comprises a U-shaped armature A and a pivoting vane 1. This armature A is formed by a base 2 and two wings 5,6. The vane 1 is articulated on the end 8 of one 6 of the wings 5,6 of the armature A and, in the loaded position of the trip device D, said vane 1 presses on the ends 7,8 of the wings 5,6 forming two polar surfaces. The shell of a coil B is arranged around one of the wings of the armature A. A permanent magnet P for polarising the armature A is fitted between said wings 5,6 to keep the vane 1 in the position attracted against the polar surfaces 7,8 against the return force of a spring 9. Such a trip device is well known, and it merely has to be recalled that release of the vane 1 is caused by excitation of the coil cancelling the attraction of the vane 1 by the permanent magnet, thereby causing the vane 1 to be biased r 1 by means of the return spring to a position away from the polar surfaces 7,8 of the armature A, this movement of the vane 1 resulting in interruption of the electric circuit.
This trip device D also comprises a resetting blade 10 fixed onto the vane 1 at the level of one 12 of the opposite ends 11,12 thereof. The two ends 13,14 of the blade 10 press on the vane 1 at the level of the polar zones 7,8 so as to distribute the resetting forces and thus prevent deformation of the vane 1 which is detrimental to the functional properties of the trip device D. This blade 10 enables the impact of the resetting forces generated by means of the resetting pin 15 during resetting operations to be dampened so that the vane 1 reverts to its initial functional position after the resetting operation.
Referring more particularly to figures 2 and 3, it can be seen that, according to the invention, this blade 10 is formed by a part of slightly convex shape 16 from which part there extend two lugs 17,18 in a plane substantially perpendicular to the main plane of the blade 10. This blade 10 also comprises two recesses 19,20 opposite one another with respect to the axis of the blade 10 and each extending from one 21,22 of the longitudinal edges of the blade 10 in the direction of the central axis of the blade 10 over a part only of the length of said blade 10. Referring again to figure 1, it can be seen that one 6 of the wings 5,6 of the armature A, whereon the vane 1 is articulated, is terminated by two branches 23 only one 23 whereof is represented. The above-mentioned recesses 19,20 of the blade 10 are designed to each house one 23 of these branches 23 of the armature 6. The two above-mentioned lugs 17,18 of the blade 10 each comprise an angular part 24,25 forming a pivot designed to operate in conjunction with the internal face 32 of the abovementioned branches 23 and are housed in a recess 31 provided at the end of said wing 6.
One 26,27 of the edges of each recess 19,20, situated on the same side as the articulation, formed by a rear stop 28 designed to limit the forward movement of the vane 1, i.e.
movement towards the side opposite the articulation. Optimum positioning of the vane 1 on its articulation and with respect to the polar surfaces 7,8 is thus guaranteed.
The lugs 17,18 also each comprise, on their internal face, a boss 29,34 extending in the direction of the central axis of the blade 10 and performing lateral positioning of said blade Lateral positioning is thus performed by points on a flat surface plate, without any polar surface and without any resulting cutting burrs.
This blade 10 is also extended by a part of specific shape 30 designed to enable latching of the above-mentioned return spring 9. This blade 10 is made of a material chosen for its flexible, non-magnetic, non-corrosive, and laser-weldable properties.
It can also be seen that the lugs 17,18 supporting the articulation pivots 24,25 present an angle 35 chosen so as to limit opening of the vane 1 during assembly.
The blade 10 presents the shape of an arc of a circle the radius whereof is chosen, for example R35, so as to bias the vane 1 onto its rear articulation stop 28 when resetting is performed via the pin The shapes of the blade 10 are obtained by cutting, folding and stamping on a single part.
This part is assembled to the vane of the relay by a laser welding process.
In normal operation, the vane is kept against the polar surfaces of the armature by the permanent magnet. When an electric fault occurs in the electric circuit wherein the trip device is integrated, there flows through the coil a current that opposes the attraction of the magnet. The vane is then biased to a position away from the armature by the return spring.
During this movement, the vane pivots around an axis materialised by the articulation pivots formed on the lugs of the blade, operating in conjunction with a face of the abovementioned branches of one of the wings of the armature. When the resetting operation is performed, the vane is biased onto its rear articulation stop, said vane reverting to its initial functional position due to the action of the blade.
An electromagnetic trip device of simple design comprising a device to prevent deformation of the vane when resetting of the relay is performed via the pin has therefore been achieved by means of the invention, this device achieving with a single part the functions of spring attachment, articulation, stop, lateral positioning, longitudinal positioning, limiting of the opening angle, damper device, and force distributor on the magnetic poles.
The invention is naturally not limited to the embodiments described and illustrated which have been given for example purposes only.
On the contrary, the invention extends to encompass all the technical equivalents of the means described as well as combinations thereof if the latter are achieved according to its spirit.

Claims (12)

1. Electromagnetic trip device comprising a U-shaped armature the ends whereof form two polar surfaces, a vane pivoting with respect to the armature and able to be moved onto said polar surfaces to close the magnetic circuit fonned by the armature and vane, a permanent magnet for polarising the magnetic circuit, a trip coil surrounding the magnetic circuit and able to counteract the force of the magnet so as to move the vane, a resetting pin of the vane, a blade fixed on the vane designed to dampen the impact of the resetting forces and a return spring of the vane, characterized in that the above-mentioned blade (10) comprises articulation pivots (24,25) of the vane (1) with respect to the armature A.
2. Trip device according to claim 1, characterized in that the blade (10) comprises two lugs (17,18) extending on each side of the vane and comprising the articulation pivots (24,25).
3. Trip device according to claim 1 or 2, characterized in that the lugs (17,18) extend in planes substantially perpendicular to the main plane of the blade
4. Trip device according to claim 2 or 3, characterized in that the lugs (17,18) and articulation pivots (24,25) are cast with the blade Trip device according to any one of the claims 2 to 4, characterized in that the above- mentioned two lugs (17,18) are housed in a housing (31) provided at the end of one of the wings of the armature A.
6. Trip device according to claim 5, characterized in that the above-mentioned pivots (24,25) are formed by angular parts formed on the lugs (17,18) and operating in conjunction with an inside wall (32) situated in the above-mentioned housing (31). 1
7. Trip device according to claim 6, characterized in that the angle (35) of the above- mentioned angular parts (24,25) is chosen so as to limit opening of the vane (1) during assembly of the trip device D.
8. Trip device according to any one of the foregoing claims, characterized in that the blade (1 0) comprises a part in the t'mn of a latch (30) designed to enable latching of a spring performing biasing of the vane away from the polar surfaces of the armature A and against the action of the permanent magnet.
9. Trip device according to any one of the foregoing claims, characterized in that the blade (10) comprises a stop (28) limiting the movement of the vane towards the side opposite the articulation (24,25,32). Trip device according to claim 9, characterized in that the above-mentioned stop (28) is formed by two edges (26,27) of the blade (10) respectively belonging to two recesses (19,20) provided on each side of the blade (10) and designed to respectively receive two branches (23) situated at the end of one of the wings of the armature A with respect to which said vane (10) is articulated.
11. Trip device according to any one of the foregoing claims, characterized in that the blade (10) presents the shape of an arc of a circle the radius whereof is defined so as to bias the vane onto its rear articulation stop (24,25,32) when resetting is performed via the pin
12. Trip device according to claim 10, characterized in that the above-mentioned lugs (17,18) respectively comprise two bosses (29,34) opposite one another, located respectively on the internal face of said lugs (17,18) and housed in the above- mentioned recesses (19,20), said bosses (29,34) being designed to perform lateral positioning of the vane and blade (10) with respect to the armature A.
13. Electrical switchgear apparatus comprising a trip device according to any one of the foregoing claims.
14. Differential switch comprising a trip device according to any one of the foregoing claims. DATED this 1st day of September 2005. SCHNEIDER ELECTRIC INDUSTRIES SAS WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VIC 3122.
AU2005205771A 2004-09-02 2005-09-01 Electromagnetic trip device and electrical switchgear apparatus comprising same Active AU2005205771B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409304A FR2874740B1 (en) 2004-09-02 2004-09-02 ELECTROMAGNETIC TRIGGER AND ELECTRICAL CUTTING APPARATUS HAVING THE SAME
FR0409304 2004-09-02

Publications (2)

Publication Number Publication Date
AU2005205771A1 true AU2005205771A1 (en) 2006-03-16
AU2005205771B2 AU2005205771B2 (en) 2009-10-08

Family

ID=34950324

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2005205771A Active AU2005205771B2 (en) 2004-09-02 2005-09-01 Electromagnetic trip device and electrical switchgear apparatus comprising same

Country Status (9)

Country Link
EP (1) EP1632970B1 (en)
CN (1) CN1747097B (en)
AR (1) AR050555A1 (en)
AU (1) AU2005205771B2 (en)
BR (1) BRPI0503707B1 (en)
EA (1) EA008953B1 (en)
ES (1) ES2636538T3 (en)
FR (1) FR2874740B1 (en)
NO (1) NO329292B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111681927A (en) * 2020-06-02 2020-09-18 上海电气集团股份有限公司 Buffer device of low-voltage circuit breaker
CN113793785A (en) * 2021-09-17 2021-12-14 乐清拓优电气有限公司 Tripping device of residual current circuit breaker

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410353A1 (en) * 1977-11-28 1979-06-22 Merlin Gerin Polarised relay for differential circuit breaker - has magnetic yoke having two L=shaped legs, one carrying de-energising coil and other completing loop with permanent magnet
DE3528470A1 (en) * 1985-08-08 1987-02-19 Bbc Brown Boveri & Cie Residual current device
SU1339690A1 (en) * 1985-11-11 1987-09-23 Харьковский институт инженеров коммунального строительства Maximum-current tripping device
FR2620264B1 (en) * 1987-09-03 1989-12-01 Merlin Gerin MAGNETIC TRIGGER WITH KNIFE JOINT
DE9103978U1 (en) 1991-04-02 1991-06-27 Felten & Guilleaume Energietechnik AG, 51063 Köln Magnetic system for a quick-disconnecting hinged armature relay
DE19637077A1 (en) 1996-09-12 1998-03-19 Maier & Cie C Permanent magnet for the magnetic circuit of a magnetic release that can preferably be used in a residual current circuit breaker
FR2754933B1 (en) * 1996-10-23 1998-11-27 Schneider Electric Sa ELECTROMAGNETIC TRIGGER RELAY WITH AMORPHOUS CARBON COATING, AND METHOD FOR MANUFACTURING THE SAME
ES2267121T3 (en) * 1997-10-23 2007-03-01 Ge Power Controls España S A ELECTROMAGNETIC RELAY.
FR2779568B1 (en) * 1998-06-04 2000-07-13 Schneider Electric Ind Sa ELECTRICAL CUT-OFF DEVICE INCLUDING A DIFFERENTIAL TRIP DEVICE AND CIRCUIT BREAKER INCLUDING SUCH A DEVICE
DE10117340C1 (en) * 2001-04-06 2002-10-10 Siemens Ag Electromagnetic trigger relay has blade joint formed on pole face outer edge directly by edge of holding element mounted flat on underside of armature and guide plate on core outer side
FR2823370B1 (en) * 2001-04-06 2003-10-24 Realisation De Disjoncteurs So ELECTROMAGNETIC TRIGGER COMPRISING A MOBILE ARMATURE AND A FIXED ARMATURE ONTO WHICH A GUIDING PART OF THE MOBILE ARMATURE IS SNAPSHOT

Also Published As

Publication number Publication date
AR050555A1 (en) 2006-11-01
FR2874740A1 (en) 2006-03-03
EP1632970A2 (en) 2006-03-08
FR2874740B1 (en) 2006-10-20
BRPI0503707B1 (en) 2023-01-24
BRPI0503707A (en) 2006-04-11
NO20053926D0 (en) 2005-08-23
EP1632970A3 (en) 2009-02-18
EP1632970B1 (en) 2017-05-10
CN1747097A (en) 2006-03-15
CN1747097B (en) 2012-04-25
EA200501234A1 (en) 2006-04-28
ES2636538T3 (en) 2017-10-06
NO20053926L (en) 2006-03-03
EA008953B1 (en) 2007-10-26
NO329292B1 (en) 2010-09-27
AU2005205771B2 (en) 2009-10-08

Similar Documents

Publication Publication Date Title
US20180130625A1 (en) Electromagnetic relay
JP2006173125A (en) Electromagnetic relay
AU2005205771B2 (en) Electromagnetic trip device and electrical switchgear apparatus comprising same
CN101976637B (en) There is the magnetic latching relay of self-locking structure
JP3444215B2 (en) Circuit breaker trip device
JP4480312B2 (en) Movable contact with low electrical resistance
US9368305B2 (en) Instant trip device of circuit breaker
US6801111B2 (en) Latch for an electrical device
KR20020090870A (en) Electromagnetic tripping device for circuit breaker
AU2005225079B2 (en) Electromagnetic trip device and electrical protection apparatus
KR101768498B1 (en) Circuit Breaker
CA1241684A (en) Circuit breaker contact arm assembly having a magnetic carrier
CN113223904A (en) Electromagnetic release and electrical protection device comprising same
CN214956711U (en) Electromagnetic release and electrical protection device comprising same
CN215266155U (en) Electromagnetic release with stable structure
CN214956712U (en) Electromagnetic release with stable structure and low power consumption
CN215266152U (en) Reliable and stable electromagnetic release
CN214956717U (en) Electromagnetic release with low power consumption and strong stability
CN215815765U (en) Electromagnetic release and electrical protection device comprising same
CN215266151U (en) Electromagnetic release and electrical protection device comprising same
CN214956716U (en) Electromagnetic release with low power consumption, strong stability and long service life
CN214956714U (en) Electromagnetic release
CN214956718U (en) Electromagnetic release that stability is strong
JP6106031B2 (en) Latching relay
JP7487656B2 (en) Electromagnetic Relay

Legal Events

Date Code Title Description
FGA Letters patent sealed or granted (standard patent)