EP0809270A3 - Reversing spring contact switching mechanism and thermal overload relay - Google Patents

Reversing spring contact switching mechanism and thermal overload relay Download PDF

Info

Publication number
EP0809270A3
EP0809270A3 EP97108306A EP97108306A EP0809270A3 EP 0809270 A3 EP0809270 A3 EP 0809270A3 EP 97108306 A EP97108306 A EP 97108306A EP 97108306 A EP97108306 A EP 97108306A EP 0809270 A3 EP0809270 A3 EP 0809270A3
Authority
EP
European Patent Office
Prior art keywords
spring
switching mechanism
leg piece
central leg
contact switching
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.)
Withdrawn
Application number
EP97108306A
Other languages
German (de)
French (fr)
Other versions
EP0809270A2 (en
Inventor
Kenji Suzuki
Yukinari Furuhata
Shoji Yokoyama
Katsumi Akiike
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of EP0809270A2 publication Critical patent/EP0809270A2/en
Publication of EP0809270A3 publication Critical patent/EP0809270A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H2071/109—Operating or release mechanisms with provisions for selecting between automatic or manual reset

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Abstract

A reversing spring contact switching mechanism (6) comprises: a single member reversing plate spring (7) in which a lateral pair of outer leg pieces (7a) and a central leg piece (7b) are formed, the central leg piece having a bent spring section (7c) therein; a supporting arm (8) for rollably supporting the tip edges of the outer leg pieces; a supporting arm 9 for applying tensile force to the spring section of the central leg piece while engaging and fixing the tip edge of the central leg piece; a normally closed contact (4a, 11); and a normally open contact (4b, 12). In a thermal overload relay combining this reversing spring contact switching mechanism (6) with a bimetal heat element 2 that responds to an overload current through a main circuit the displacement of a bimetal (2a) of the heat element (2) caused by an overload current is transmitted to the plate spring (7) via a shifter (2c) and a releasing lever (5) to cause the spring to be reversed in order to switch the contacts.
EP97108306A 1996-05-22 1997-05-22 Reversing spring contact switching mechanism and thermal overload relay Withdrawn EP0809270A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP126171/96 1996-05-22
JP12617196 1996-05-22
JP268208/96 1996-10-09
JP26820896A JP3298428B2 (en) 1996-05-22 1996-10-09 Inverted spring contact switching mechanism and thermal overload relay

Publications (2)

Publication Number Publication Date
EP0809270A2 EP0809270A2 (en) 1997-11-26
EP0809270A3 true EP0809270A3 (en) 1998-09-02

Family

ID=26462395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108306A Withdrawn EP0809270A3 (en) 1996-05-22 1997-05-22 Reversing spring contact switching mechanism and thermal overload relay

Country Status (3)

Country Link
EP (1) EP0809270A3 (en)
JP (1) JP3298428B2 (en)
CN (1) CN1173728A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1677582B1 (en) * 1996-01-11 2011-10-12 Ibiden Co., Ltd. Multilayer printed wiring board
FR2785717B1 (en) * 1998-11-05 2000-12-08 Schneider Electric Sa THERMAL RELAY WITH SPRING BLADE MECHANISM
JP3899754B2 (en) * 1999-12-01 2007-03-28 富士電機機器制御株式会社 Thermal overload relay
JP4186415B2 (en) * 2000-11-30 2008-11-26 富士電機機器制御株式会社 Circuit breaker overload trip device
CN1293581C (en) * 2004-08-10 2007-01-03 浙江正泰电器股份有限公司 Biimpact fast switching device
JP5003426B2 (en) * 2007-11-20 2012-08-15 富士電機機器制御株式会社 Thermal overload relay
JP4906881B2 (en) * 2009-03-27 2012-03-28 富士電機機器制御株式会社 Thermal overload relay
CN104167329B (en) * 2013-05-17 2018-12-04 郭永明 High-precision electrothermal relay
CN104282504B (en) * 2014-10-10 2016-07-06 成都锐奕信息技术有限公司 Have and increase the relay controlling sensitivity function
CN105575738A (en) * 2016-01-28 2016-05-11 成都绿迪科技有限公司 Power supply thermal relay
CN107204260A (en) * 2017-06-08 2017-09-26 无锡市飞沪科技有限公司 A kind of electrothermal relay with automatic protection
CN110277286B (en) * 2018-03-13 2024-09-13 浙江思创电力科技股份有限公司 Circuit breaker mechanism
US10957507B2 (en) 2018-06-27 2021-03-23 Appleton Grp Llc Mechanism for indirect access to an actuator on an apparatus disposed within a housing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1564704A (en) * 1968-02-21 1969-04-25
DE2702851A1 (en) * 1977-01-25 1978-07-27 Ellenberger & Poensgen BIMETAL CONTROLLED SWITCH
GB2196477A (en) * 1986-10-17 1988-04-27 Mitsubishi Electric Corp Thermal overcurrent protective relay
US4908594A (en) * 1987-07-14 1990-03-13 Fuji Electric Co., Ltd. Thermal overload relay
EP0360215A2 (en) * 1988-09-20 1990-03-28 Fuji Electric Co., Ltd. Inversion spring for thermal overload relay and method for making the same
EP0563775A1 (en) * 1992-03-31 1993-10-06 Ellenberger & Poensgen GmbH Bimetal-controlled protection circuit breaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1564704A (en) * 1968-02-21 1969-04-25
DE2702851A1 (en) * 1977-01-25 1978-07-27 Ellenberger & Poensgen BIMETAL CONTROLLED SWITCH
GB2196477A (en) * 1986-10-17 1988-04-27 Mitsubishi Electric Corp Thermal overcurrent protective relay
US4908594A (en) * 1987-07-14 1990-03-13 Fuji Electric Co., Ltd. Thermal overload relay
EP0360215A2 (en) * 1988-09-20 1990-03-28 Fuji Electric Co., Ltd. Inversion spring for thermal overload relay and method for making the same
EP0563775A1 (en) * 1992-03-31 1993-10-06 Ellenberger & Poensgen GmbH Bimetal-controlled protection circuit breaker

Also Published As

Publication number Publication date
CN1173728A (en) 1998-02-18
EP0809270A2 (en) 1997-11-26
JP3298428B2 (en) 2002-07-02
JPH1040795A (en) 1998-02-13

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