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ES418911A1 - Snap-action switch for a thermal trigger, especially for a motor protection device - Google Patents

Snap-action switch for a thermal trigger, especially for a motor protection device

Info

Publication number
ES418911A1
ES418911A1 ES418911A ES418911A ES418911A1 ES 418911 A1 ES418911 A1 ES 418911A1 ES 418911 A ES418911 A ES 418911A ES 418911 A ES418911 A ES 418911A ES 418911 A1 ES418911 A1 ES 418911A1
Authority
ES
Spain
Prior art keywords
spring
elastic spring
snap
protection device
legs
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
Application number
ES418911A
Other languages
Spanish (es)
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh AG
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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Publication of ES418911A1 publication Critical patent/ES418911A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5445—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting with measures for avoiding slow break of contacts during the creep phase of the snap bimetal
    • 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)

Abstract

A snap-action switch for a thermal trigger, especially for a motor protection device, having rest contacts, part of which are stationary and another part of which are mounted at an elastic spring actuated by a bimetallic element for opening the contacts. A stop is movable into the path of the elastic spring in front of its dead-center position. The elastic spring possesses a substantially E-shape and is fixedly held at the ends of both of its outer legs between two stationarily mounted support or bearing plates. The support plate which is closer to at least one stationary contact extends along both of the outer spring legs, closer to at least one contact which is mounted at the elastic spring than the other support plate. The central spring leg is moved with its free end by the bimetallic element past the support plates and the stop is movable into the path of a spring web of the elastic spring and such web is enlarged at its side facing away from the spring legs and carries the aforesaid at least one contact.
ES418911A 1972-09-26 1973-09-20 Snap-action switch for a thermal trigger, especially for a motor protection device Expired ES418911A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1402172A CH537088A (en) 1972-09-26 1972-09-26 Snap-action switch for a thermal release, especially for motor protection

Publications (1)

Publication Number Publication Date
ES418911A1 true ES418911A1 (en) 1976-03-01

Family

ID=4397276

Family Applications (1)

Application Number Title Priority Date Filing Date
ES418911A Expired ES418911A1 (en) 1972-09-26 1973-09-20 Snap-action switch for a thermal trigger, especially for a motor protection device

Country Status (6)

Country Link
US (1) US3872417A (en)
JP (1) JPS4976083A (en)
CH (1) CH537088A (en)
DE (1) DE2324295A1 (en)
ES (1) ES418911A1 (en)
GB (1) GB1421565A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1542253A (en) * 1976-05-07 1979-03-14 Taylor J Electric switches
US4431884A (en) * 1982-08-09 1984-02-14 Gulf & Western Manufacturing Company Snap action switch
US4796355A (en) * 1987-09-15 1989-01-10 B/K Patent Development, Inc. Snap action devices and methods and apparatus for making same
JPH071665B2 (en) * 1988-09-20 1995-01-11 富士電機株式会社 Inversion spring mechanism of thermal overload relay
US5467523A (en) * 1994-09-01 1995-11-21 General Electric Company Method for assembling and calibrating a condition-responsive electric switch mechanism
US5585774A (en) * 1994-09-01 1996-12-17 General Electric Company Condition-responsive electric switch mechanism
FR2785717B1 (en) * 1998-11-05 2000-12-08 Schneider Electric Sa THERMAL RELAY WITH SPRING BLADE MECHANISM
US6018286A (en) * 1998-11-20 2000-01-25 Therm-O-Disc, Incorporated Thermal switch
US6252492B1 (en) 1999-03-18 2001-06-26 James P. Frank Condition-responsive electric switch mechanism
US6563414B2 (en) * 2001-04-19 2003-05-13 Tsung-Mou Yu Switch having a bimetal plate with two legs
US6538553B2 (en) * 2001-07-13 2003-03-25 Tsung-Mou Yu Switching element for electric switch
US6550832B2 (en) * 2001-07-30 2003-04-22 Mentor Group, Llc Actuator
US20050134424A1 (en) * 2003-12-19 2005-06-23 Albert Huang Bimetallic strip for a circuit breaker
JP4370355B2 (en) * 2005-02-02 2009-11-25 ウチヤ・サーモスタット株式会社 thermostat
DE102009061050B4 (en) * 2009-06-05 2019-09-05 Marcel P. HOFSAESS Bimetal part and thus equipped temperature-dependent switch
US8402663B2 (en) 2010-08-11 2013-03-26 William J. McHenry Two-piece hand tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584460A (en) * 1947-12-24 1952-02-05 Acro Mfg Co Snap action switch
BE505847A (en) * 1950-09-16
US3382336A (en) * 1962-09-20 1968-05-07 Ite Circuit Breaker Ltd Manual operator and lock means therefor for overload protective device
US3153708A (en) * 1963-05-29 1964-10-20 George G Guthrie Snap action switch

Also Published As

Publication number Publication date
GB1421565A (en) 1976-01-21
DE2324295A1 (en) 1974-03-28
CH537088A (en) 1973-05-15
JPS4976083A (en) 1974-07-23
US3872417A (en) 1975-03-18

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