EP0903836A2 - Interrupteur de protection thermique - Google Patents

Interrupteur de protection thermique Download PDF

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Publication number
EP0903836A2
EP0903836A2 EP98117405A EP98117405A EP0903836A2 EP 0903836 A2 EP0903836 A2 EP 0903836A2 EP 98117405 A EP98117405 A EP 98117405A EP 98117405 A EP98117405 A EP 98117405A EP 0903836 A2 EP0903836 A2 EP 0903836A2
Authority
EP
European Patent Office
Prior art keywords
light source
protection switch
push button
thermal protection
housed
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Withdrawn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
EP98117405A
Other languages
German (de)
English (en)
Other versions
EP0903836A3 (fr
Inventor
Yolanda Kienzler
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.)
KIENZLER AG G
Original Assignee
KIENZLER AG G
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 KIENZLER AG G filed Critical KIENZLER AG G
Publication of EP0903836A2 publication Critical patent/EP0903836A2/fr
Publication of EP0903836A3 publication Critical patent/EP0903836A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • 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
    • H01H37/5409—Bistable switches; Resetting means

Definitions

  • the present invention relates to a thermal protection switch with free release.
  • Thermal protection switches are known and in use, which with a snap disc thermostat, its bimetal disc a transfer pin protruding therefrom with snap action actuated, which on the one hand a bridge contact controls in a conductor connecting two connections and on the other hand with a mechanical reset in shape a push button interacts, such that under itself The effect of temperature on the open bridge contact Depress the push button while resetting the bimetal disc is recoverable.
  • thermal circuit breakers are used everywhere where overheating protection is necessary or desirable in the smallest space is, e.g. for cable drums, electrical devices, Heaters, heat exchangers etc.
  • thermal circuit breakers speak to a predetermined temperature from a snap-action bimetallic disc is determined.
  • the bimetallic disc will move mechanically through a cooperating transmission pin transferred to a bridge contact so that the circuit to interrupt.
  • the restart is done manually by actuating a free release designed as a push button.
  • This push button can be in certain embodiments two different positions, namely when closed Contact bridge in depressed position, with open Contact bridge in the extended position, so the operating position visually display.
  • the push buttons are in usually so small that the display no longer gives me security can be determined correctly.
  • the position of the push button outside the actuation phase always constant, so that an advertisement is omitted.
  • the object of the present invention is now the optical display the operating position of the thermal protection switch with if possible to improve simple means.
  • This task is the beginning of a thermal circuit breaker defined type according to the invention by the features according to characterizing part of claim 1, namely by a Illuminated display in the push button when the circuit breaker has tripped.
  • a so-called snap disc thermostat in the lower part provided in which a screw bolt 1 of the attachment in a possibly heating apparatus part (not shown) serves.
  • a bimetallic disc 2 is accommodated directly above the bolt 1, which after at a predetermined temperature snapped up.
  • a transmission pin 3 lies over the disc 2. It will move upwards when the window 2 is snapped and thereby the contact bridge 4, which is normally through a spring 5 against contacts in a connecting the connections 6, 6 ' Head is pressed, lift up and make the connection interrupt between connections 6, 6 '.
  • the thermal protection switch is triggered.
  • the transmission pin 3 protrudes upwards into a reset device 7 which is mounted on the thermostat (e.g. snapped on) is and becomes a when actuated (upward movement) Ball 8 to bear against a hollow cylinder Apply reset pushbutton 9.
  • the button 9 by a spring 10 against an upper limit of Reset housing 11 pressed.
  • a light source in the form of a light emitting diode 12 with in series Resistor 13 housed.
  • the light emitting diode 12 with resistance is via a separate conductor 12 'and contact pieces 14 continuously with the two connections 6, 6 'connected. Thanks to the resistor 13 but in normal operation no current flow which causes the diode 12 to glow would bring.
  • the thermal protection switch is triggered and is indicated by the light source 12.
  • the wall of the button 9 is translucent (the Button 9 is e.g. made of red colored, transparent plastic), so that the button 9 lights up visually, as soon as the thermal protection switch is triggered.
  • the LED 12 with resistor 13 is easy to assemble (e.g. by pinching in the button cavity). It just has to be for a secure connection of the contact support 14 to the connections 6, 6 'or their mutual connection.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
EP98117405A 1997-09-22 1998-09-14 Interrupteur de protection thermique Withdrawn EP0903836A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH222197 1997-09-22
CH222197 1997-09-22
CH2221/97 1997-09-22

Publications (2)

Publication Number Publication Date
EP0903836A2 true EP0903836A2 (fr) 1999-03-24
EP0903836A3 EP0903836A3 (fr) 2000-05-17

Family

ID=4228698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117405A Withdrawn EP0903836A3 (fr) 1997-09-22 1998-09-14 Interrupteur de protection thermique

Country Status (2)

Country Link
EP (1) EP0903836A3 (fr)
CN (1) CN1212449A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7518475B2 (en) * 2007-07-24 2009-04-14 Eaton Corporation Electrical switching apparatus, circuit interrupter and method of interrupting overcurrents of a power circuit
US7570146B2 (en) * 2007-07-25 2009-08-04 Eaton Corporation Circuit breaker including ambient compensation bimetal holding and releasing arc fault indicator
US9042073B2 (en) * 2012-03-16 2015-05-26 Eaton Corporation Electrical switching apparatus with embedded arc fault protection and system employing same
CN103177903B (zh) * 2013-03-01 2015-06-17 合肥美的电冰箱有限公司 用于制冷设备的速冻复位开关装置和具有其的制冷设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715699A (en) * 1971-07-15 1973-02-06 Fasco Industries Thermostat with reset pin
EP0162940A1 (fr) * 1984-05-30 1985-12-04 Lectra Trading Ag Interrupteur de protection contre les surchages
DE3802647A1 (de) * 1988-01-29 1989-08-03 Lectra Trading Ag Anzeigevorrichtung fuer den schaltzustand eines ueberlastschalters
EP0451678A2 (fr) * 1990-04-06 1991-10-16 Hitachi, Ltd. Dispositif de protection contre la surcharge
US5391848A (en) * 1993-03-12 1995-02-21 Inventio Ag Push button switch illuminated by light emitting diodes for use with elevators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715699A (en) * 1971-07-15 1973-02-06 Fasco Industries Thermostat with reset pin
EP0162940A1 (fr) * 1984-05-30 1985-12-04 Lectra Trading Ag Interrupteur de protection contre les surchages
DE3802647A1 (de) * 1988-01-29 1989-08-03 Lectra Trading Ag Anzeigevorrichtung fuer den schaltzustand eines ueberlastschalters
EP0451678A2 (fr) * 1990-04-06 1991-10-16 Hitachi, Ltd. Dispositif de protection contre la surcharge
US5391848A (en) * 1993-03-12 1995-02-21 Inventio Ag Push button switch illuminated by light emitting diodes for use with elevators

Also Published As

Publication number Publication date
EP0903836A3 (fr) 2000-05-17
CN1212449A (zh) 1999-03-31

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