EP1127363B1 - Relais thermique dote d'un mecanisme a lame-ressort - Google Patents

Relais thermique dote d'un mecanisme a lame-ressort Download PDF

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Publication number
EP1127363B1
EP1127363B1 EP99954049A EP99954049A EP1127363B1 EP 1127363 B1 EP1127363 B1 EP 1127363B1 EP 99954049 A EP99954049 A EP 99954049A EP 99954049 A EP99954049 A EP 99954049A EP 1127363 B1 EP1127363 B1 EP 1127363B1
Authority
EP
European Patent Office
Prior art keywords
blade
fact
protection relay
foot
extension
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 - Lifetime
Application number
EP99954049A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1127363A1 (fr
Inventor
Bernard Schneider Shanghai I. Control Ltd. BIZARD
Daniel Sinthomez
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9532439&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1127363(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1127363A1 publication Critical patent/EP1127363A1/fr
Application granted granted Critical
Publication of EP1127363B1 publication Critical patent/EP1127363B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements

Definitions

  • the present invention relates to an electromechanical thermal protection relay comprising in a housing elements, such as bimetallic strips, thermally deformable in the event of overcurrent in power lines, as well as switch contacts associated with the power lines and susceptible to be actuated by a control member which can be urged by the deformable elements.
  • the control member acts at a midpoint of a blade thin and flexible which has a fixed foot or resting on the housing and a cooperating head with a contact operating element.
  • the force undergone by the blade in its midpoint results in a sudden displacement of the head from a position stable rest at a stable working position, while the blade foot remains substantially in its original position.
  • the blade is designed, produced and assembled from so as to be able to blister from one stable position to the other, i.e. to be able to flex brutally and it presents for this purpose, in its middle part and to constitute a range of application for the control member, a finger projecting in an open area.
  • the object of the invention is to remedy the aforementioned drawbacks and to make reliable and reproducible the manufacturing characteristics, in particular the adjustment conditions, a thermal relay of the type described, while giving it a small footprint.
  • the base of the flexible blade has a folded extension for apply elastically against a range of the housing so as to cause a pressurization of the blade towards the support.
  • the extension may in particular extend from the foot of the blade in the direction of its length and be folded, beyond the fixing area of the rigid support on the blade, V-shaped or U-shaped relative to the general plane of the blade, the free branch of V or U being applied against the scope of the housing.
  • the extension may include two symmetrical branches.
  • the pivoting fulcrum of the blade support is located along the length of the blade substantially at the level of the range of application of the control on the blade.
  • the adjusting member may have a cam applied to the rigid support of the blade on its side of the pivoting fulcrum, this cam being capable of turning about an axis parallel to the general plane of the blade.
  • Figure 1 shows in section a thermal protection relay according to the invention.
  • Figure 2 is a perspective view of the blistering elastic blade of the relay
  • Figures 3 and 4 show the blade respectively in front elevation and side.
  • the illustrated electromechanical thermal protection relay includes a box insulator 10 which offers a front face 10a provided with operating and adjusting members 10b and which contains bimetallic strips not indicated, deformable in the event of overcurrent in power lines also not shown.
  • the housing 10 houses pairs of normally closed switch contacts 11 (NC) and normally open switch contacts 12 (NO), including the contacts mobile are located at the ends of respective elastic blades 13,14 controllable by a trigger mechanism 15 in response to the deformation of at least a bimetallic strip.
  • the trigger mechanism 15 includes a control member 16 acting on a flexible blistering blade 20 which will act on the contacts.
  • the organ of control 16 is for example a lever pivoting around an axis X1 and one of which part is formed by an ambient temperature compensation bimetallic strip.
  • the flexible blade 20 extends in the direction of its length over a distance h and it is symmetrical with respect to a plane Q which defines a principal director X2 at rest and X'2 in work.
  • the general surface of the blade is slightly curved and will later be qualified as a general plan P.
  • the blade has a support foot 21 via a support 30 on a bearing surface 17 of the housing, as well as a head 22 and a middle part 23.
  • the head 22 of the blade cooperates with a slide 18 for operating the contacts 11.12 to move it in a direction Y1 parallel to the front face 10a of the housing.
  • the middle part 23 of the blade located between the foot 21 and the head 22, is provided of a finger 24, projecting into an openwork region 25.
  • the finger 24 constitutes a range 24a for the control lever 16, which acts in the event of an overcurrent an effort in a direction Y2 parallel to the front face 10a of the housing and contrary to Y1.
  • the rigid support 30, in the form of a wafer or the like.
  • the plate is arranged on the side of the blade opposite the lever 16 and has at its lower part a fixing zone 31, associated with a fixing range 26 of the foot 21 of the blade, and its part upper a support point 32 for pivoting on the fixed surface 17 of the housing.
  • the blade 20 or preferably the plate 30 is biased by an adjusting member 34 able to move it according to Y1 or Y2.
  • the regulating member 34 rotates about an axis X3 and offers a cam surface 35 applied to the end 33 of the insert 30 to rotate the plate 30 and with it the flexible blade 20 around the axis of pivot X4 defined by the bearing 17 and the fulcrum 32, in order to adjust the position of the head 22 of the blade which cooperates with the slide.
  • the regulating member 34 is easily accessible by opening the housing before fitting a cover (not shown).
  • the axes X1, X3, X4 are mutually parallel and are perpendicular to Y1, Y2 as well as on the plane of symmetry Q of the plate.
  • the foot 21 of the blade 20 is provided with an extension 27 constituted either of a branch, or preferably of two elastic branches 28,29. Extension 27 is directed from the foot along the length of the blade. Branches 28,29 are symmetrical with respect to the Q plane. The branches 28,29 are folded down V-shaped or U-shaped by folding, with a folding angle greater than 135 ° and here close 180 °, and their free end is supported on a bearing 36 of the housing. We notes that this configuration of the blade reduces the overall length the blade while producing the desired pressure of the pivot 32 on the bearing surface 17.
  • the pivot axis X4 is located, in the height direction of the blade, substantially at the level of the bearing surface 24a of the finger 24 of the blade, so that the adjustment of the position of the head 22 has a very low impact on the rest position of the lever 16 and therefore on the initial state of the control mechanism.
  • the distance e between axis X4 and range 24a can for example be less than 10%; preferably 7%, of the length h of the blade.
  • the blade 20 is introduced into the housing between the pivoting support 17 and the bearing surface 36 which pressurizes the support 17; foot 21 is applied against the adjustment cam 35, while the head is engaged in the slide 18.
  • the lever 16 is applied to the track 24a.
  • the operator rotates the member 34 until the desired position is obtained, without disturbing the mechanism 15 thanks to the provisions of the invention.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Springs (AREA)
  • Fuses (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Vehicle Body Suspensions (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Blinds (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP99954049A 1998-11-05 1999-11-03 Relais thermique dote d'un mecanisme a lame-ressort Expired - Lifetime EP1127363B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9813974A FR2785717B1 (fr) 1998-11-05 1998-11-05 Relais thermique dote d'un mecanisme a lame-ressort
FR9813974 1998-11-05
PCT/FR1999/002684 WO2000028560A1 (fr) 1998-11-05 1999-11-03 Relais thermique dote d'un mecanisme a lame-ressort

Publications (2)

Publication Number Publication Date
EP1127363A1 EP1127363A1 (fr) 2001-08-29
EP1127363B1 true EP1127363B1 (fr) 2002-06-05

Family

ID=9532439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99954049A Expired - Lifetime EP1127363B1 (fr) 1998-11-05 1999-11-03 Relais thermique dote d'un mecanisme a lame-ressort

Country Status (13)

Country Link
US (1) US6507266B1 (ru)
EP (1) EP1127363B1 (ru)
KR (1) KR100646677B1 (ru)
CN (1) CN1192405C (ru)
AT (1) ATE218747T1 (ru)
AU (1) AU755469B2 (ru)
BR (1) BR9915057B1 (ru)
DE (1) DE69901727T2 (ru)
ES (1) ES2177333T3 (ru)
FR (1) FR2785717B1 (ru)
RU (1) RU2210829C2 (ru)
WO (1) WO2000028560A1 (ru)
ZA (1) ZA200103571B (ru)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6737599B1 (en) * 2003-07-29 2004-05-18 Emerson Electric Co. Motor starting switch
KR100905021B1 (ko) * 2007-08-07 2009-06-30 엘에스산전 주식회사 열동형 과부하 트립 장치 및 그의 트립 감도 조정 방법
KR100881365B1 (ko) * 2007-08-07 2009-02-02 엘에스산전 주식회사 열동형 과부하 보호장치의 트립 감도 조정 방법
JP4706772B2 (ja) * 2009-03-27 2011-06-22 富士電機機器制御株式会社 熱動形過負荷継電器
JP4906881B2 (ja) * 2009-03-27 2012-03-28 富士電機機器制御株式会社 熱動形過負荷継電器
US8534717B2 (en) * 2009-04-30 2013-09-17 Motorola Solutions, Inc. Interconnect assembly
CN103187213B (zh) * 2011-12-29 2015-03-25 上海良信电器股份有限公司 热过载继电器的动作机构

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015007A (en) * 1959-11-19 1961-12-26 Gen Electric Canada Thermal device
FR1274608A (fr) * 1960-09-14 1961-10-27 Realisations Mecaniques S E R Dispositif de déclenchement à action brusque et dispositif contacteur en comportant application
CH537088A (de) * 1972-09-26 1973-05-15 Sprecher & Schuh Ag Schnappschalter für einen thermischen Auslöser, insbesondere für den Motorenschutz
US4118610A (en) * 1974-11-16 1978-10-03 Ranco Incorporated Snap action switch blades
US4250367A (en) * 1978-07-14 1981-02-10 Ranco Incorporated Snap action switch blades
JPH069432Y2 (ja) * 1986-10-17 1994-03-09 三菱電機株式会社 熱動式過電流継電器
US4908594A (en) * 1987-07-14 1990-03-13 Fuji Electric Co., Ltd. Thermal overload relay
JPH071665B2 (ja) * 1988-09-20 1995-01-11 富士電機株式会社 熱形過負荷継電器の反転ばね機構
DE3840064A1 (de) * 1988-11-28 1990-05-31 Kloeckner Moeller Elektrizit Thermisches relais mit schaltwippe
JP2606348B2 (ja) * 1989-02-13 1997-04-30 富士電機株式会社 熱形過負荷継電器の動作表示装置
US5021762A (en) * 1990-08-03 1991-06-04 Robertshaw Controls Company, Inc. Thermal cycling switch
DE4032942A1 (de) * 1990-10-17 1992-04-23 Ego Elektro Blanc & Fischer Einrichtung zur steuerung eines umgebungs-einflusses an geraeten
JPH0574306A (ja) * 1991-09-13 1993-03-26 Matsushita Electric Works Ltd 過電流継電器
US5191310A (en) * 1992-07-09 1993-03-02 Eaton Corporation Adjustable cycling switch for electric range
JPH08293241A (ja) * 1995-04-25 1996-11-05 Matsushita Electric Works Ltd 過電流継電器
JP3298428B2 (ja) * 1996-05-22 2002-07-02 富士電機株式会社 反転ばね式接点開閉機構および熱動形過負荷継電器
US5877670A (en) * 1997-02-07 1999-03-02 Sehlhorst; Scott B. Heat motor operated load regulating switch assembly and knob attachment therefor
US5847636A (en) * 1997-02-07 1998-12-08 Sehlhorst; Scott B. Heat motor operated load regulating switch assembly
US5790010A (en) * 1997-02-11 1998-08-04 Schwab; Pierre P. Means for actuating a snap-acting M-blade
US6108010A (en) * 1997-07-18 2000-08-22 International Business Machines Corp. Method and system for a true-scale motion path editor
DE19833983A1 (de) * 1998-07-29 2000-02-03 Ego Elektro Geraetebau Gmbh Verfahren zur Herstellung eines elektrischen Schaltgeräts und elektrisches Schaltgerät

Also Published As

Publication number Publication date
AU755469B2 (en) 2002-12-12
EP1127363A1 (fr) 2001-08-29
FR2785717A1 (fr) 2000-05-12
ATE218747T1 (de) 2002-06-15
WO2000028560A1 (fr) 2000-05-18
BR9915057A (pt) 2001-08-07
ZA200103571B (en) 2002-05-03
DE69901727T2 (de) 2002-10-31
DE69901727D1 (de) 2002-07-11
US6507266B1 (en) 2003-01-14
ES2177333T3 (es) 2002-12-01
RU2210829C2 (ru) 2003-08-20
KR100646677B1 (ko) 2006-11-17
KR20010089401A (ko) 2001-10-06
CN1192405C (zh) 2005-03-09
FR2785717B1 (fr) 2000-12-08
CN1325536A (zh) 2001-12-05
BR9915057B1 (pt) 2015-02-24
AU1051000A (en) 2000-05-29

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