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DE559517T1 - Thermostat with automatic reset. - Google Patents

Thermostat with automatic reset.

Info

Publication number
DE559517T1
DE559517T1 DE1993400439 DE93400439T DE559517T1 DE 559517 T1 DE559517 T1 DE 559517T1 DE 1993400439 DE1993400439 DE 1993400439 DE 93400439 T DE93400439 T DE 93400439T DE 559517 T1 DE559517 T1 DE 559517T1
Authority
DE
Germany
Prior art keywords
housing
cover
thermostat according
skirt
sleeve
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.)
Pending
Application number
DE1993400439
Other languages
German (de)
Inventor
Maurice Frisquet
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.)
FRISQUET SA
Original Assignee
FRISQUET SA
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 FRISQUET SA filed Critical FRISQUET SA
Publication of DE559517T1 publication Critical patent/DE559517T1/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/02Details
    • H01H37/32Thermally-sensitive members
    • H01H37/52Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/02Details
    • H01H37/12Means for adjustment of "on" or "off" operating temperature
    • H01H37/16Means for adjustment of "on" or "off" operating temperature by varying the proportion of input heat received by the thermal element, e.g. by displacement of a shield
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/02Details
    • H01H37/32Thermally-sensitive members
    • H01H37/52Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Claims (8)

93 400 439.1 WM/CK/bs Frisquet S.A. Patentansprüche93 400 439.1 WM/CK/bs Frisquet S.A. Patent claims 1. Thermostat mit automatischer Rückstellung, mit einem Gehäuse (2),_wenigstens einem feststehenden Kontakt (3) und ^ einem beweglichen Kontakt (13a, 4), die in dem Gehäuse angeordnet sind, um je nach der Position des beweglichen Kontaktes einen elektrischen Stromkreis zu schließen oder zu unterbrechen, wenigstens zwei Leiteranschlüssen (12, 13), die jeweils mit dem feststehenden und dem mobilen Kontakt verbunden sind, um diese an einen äußeren Stromkreis anzuschließen, einem wärmeverformbaren Bimetallelement (6), das auf einer Endfläche (5) des Gehäuses (2) angebracht ist und das sich schlagartig von einer Ruheposition in eine verformte Position bewegt, wenn seine Temperatur einen ersten vorbestimmten Wert P·^ erreicht, und sich in seine Ruheposition zurückbewegt, wenn seine Temperatur auf einen zweiten vorbestimmten Wert P2, unterhalb des ersten Wertes, abfällt, und einem Übertragungselement (8), das zwischen dem Bimetallelement (6) und dem beweglichen Kontakt (13a, 4) angeordnet ist, um diesen zu betätigen, wenn sich das Bimetallelement aus seiner Ruheposition in die verformte Position und umgekehrt bewegt, dadurch gekennzeichnet, daß er ferner eine Abdeckung (14) aus Isoliermaterial aufweist, die am Gehäuse (2) derart befestigt ist, daß sie mit diesem eine Kammer (17) bildet, in welcher das Bimetallelement (6) angeordnet ist, und daß eine Öffnung (15) von geringer Größe in einer Wandung (14a) der Abdeckung (14) ausgebildet ist und die Kammer (17) mit der Umgebungsluft in Verbindung bringt.1. Thermostat with automatic reset, comprising a housing (2), at least one fixed contact (3) and one movable contact (13a, 4) arranged in the housing to close or break an electrical circuit depending on the position of the movable contact, at least two conductor terminals (12, 13) connected respectively to the fixed and the movable contact in order to connect them to an external electrical circuit, a thermo-deformable bimetallic element (6) mounted on an end face (5) of the housing (2) and which moves abruptly from a rest position to a deformed position when its temperature reaches a first predetermined value P·^ and moves back to its rest position when its temperature drops to a second predetermined value P 2 below the first value, and a transmission element (8) arranged between the bimetallic element (6) and the movable contact (13a, 4) in order to actuate the latter when the Bimetallic element moved from its rest position to the deformed position and vice versa, characterized in that it further comprises a cover (14) made of insulating material which is fastened to the housing (2) in such a way that it forms with the latter a chamber (17) in which the bimetallic element (6) is arranged, and in that an opening (15) of small size is formed in a wall (14a) of the cover (14) and brings the chamber (17) into communication with the ambient air. 2. Thermostat nach Anspruch 1, dadurch gekennzeichnet, daß t die Abdeckung (14) eine Bodenwand (14a), die sich in einem * Abstand parallel zu der das Bimetallelement (6) tragenden2. Thermostat according to claim 1, characterized in that t the cover (14) has a bottom wall (14a) which is at a * distance parallel to the wall carrying the bimetal element (6). Endfläche (5) des Gehäuses (2) erstreckt, und eine Umfangswand (14b), die sich an das Gehäuse (2) anschließt, umfaßt, und daß die Öffnung (15) im wesentlichen in der Mitte der Bodenwand (14a) gegenüber dem Bimetallelement (6) ausgebildet ist.End surface (5) of the housing (2) and comprises a peripheral wall (14b) which adjoins the housing (2), and that the opening (15) is formed substantially in the middle of the bottom wall (14a) opposite the bimetallic element (6). 3. Thermostat nach Anspruch 2, dadurch gekennzeichnet, daß die Umfangswand (14b) der Abdeckung (14) durch eine Schürze (14c) verlängert ist, die eine Hülse bildet, in welcher das Gehäuse (2) gleitend eingesetzt ist.3. Thermostat according to claim 2, characterized in that the peripheral wall (14b) of the cover (14) is extended by a skirt (14c) which forms a sleeve in which the housing (2) is slidably inserted. 4. Thermostat nach Anspruch 3, dadurch gekennzeichnet, daß eine Schulter (16) an der Verbindung zwischen der Umfangswand (14b) der Abdeckung (14) und der Hülsenschürze (14c) ausgebildet ist, wobei die Schulter die Eindringtiefe des Gehäuses (2) in die Hülsenschürze begrenzt und die axiale Ausdehnung der Kammer (17) festlegt.4. Thermostat according to claim 3, characterized in that a shoulder (16) is formed at the connection between the peripheral wall (14b) of the cover (14) and the sleeve skirt (14c), wherein the shoulder limits the penetration depth of the housing (2) into the sleeve skirt and determines the axial extension of the chamber (17). 5. Thermostat nach Anspruch 4, dadurch gekennzeichnet, daß die Hülsenschürze (14c) eine dem Gehäuse (2) entsprechende Länge hat, und daß sie in dem Bereich ihrer freien Kante wenigstens eine Wulst (18) umfaßt, die radial zum Inneren des Gehäuses hin vorsteht, elastisch nachgeben kann, um das Einführen des Gehäuses in die Hülsenschürze zuzulassen, und als Rückhaltemittel dient, um das Gehäuse in der Hülsenschürze festzuhalten, nachdem es dort eingeführt worden ist.5. Thermostat according to claim 4, characterized in that the sleeve skirt (14c) has a length corresponding to the housing (2) and that in the region of its free edge it comprises at least one bead (18) which projects radially towards the interior of the housing, can yield elastically to allow the housing to be inserted into the sleeve skirt and serves as a retaining means to hold the housing in the sleeve skirt after it has been inserted therein. 6. Thermostat nach Anspruch 5, dadurch gekennzeichnet, daß die Wulst (18) an einem Ende einer flexiblen Zunge (14d) ausgebildet ist, die in Längsrichtung in der Hülsenschürze (14c) ausgeschnitten ist.6. Thermostat according to claim 5, characterized in that the bead (18) is formed at one end of a flexible tongue (14d) which is cut out longitudinally in the sleeve skirt (14c). 7. Thermostat nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß die Abdeckung (14) auf ihrer Umfangswand (14b) einen Befestigungsfuß (19) umfaßt.7. Thermostat according to one of claims 1-6, characterized in that the cover (14) comprises a fastening foot (19) on its peripheral wall (14b). 8. Thermostat nach einem der Ansprüche 1-7, dadurch gekennzeichnet, daß für ein Gehäuse (2) mit einem Durchmesser von etwa 18 mm die Kammer (17) einen Innendurchmesser von etwa
17 mm, eine axiale Länge von etwa 8 mm, eine Wandungsstärke von etwa 2 mm hat, und daß die Öffnung (15) einen Durchmesser von etwa 4 mm hat.
8. Thermostat according to one of claims 1-7, characterized in that for a housing (2) with a diameter of about 18 mm, the chamber (17) has an inner diameter of about
17 mm, an axial length of about 8 mm, a wall thickness of about 2 mm, and that the opening (15) has a diameter of about 4 mm.
DE1993400439 1992-03-04 1993-02-19 Thermostat with automatic reset. Pending DE559517T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9202602A FR2688340A1 (en) 1992-03-04 1992-03-04 AUTOMATIC RESET THERMOSTAT.

Publications (1)

Publication Number Publication Date
DE559517T1 true DE559517T1 (en) 1994-02-03

Family

ID=9427356

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1993400439 Pending DE559517T1 (en) 1992-03-04 1993-02-19 Thermostat with automatic reset.
DE1993603639 Expired - Fee Related DE69303639T2 (en) 1992-03-04 1993-02-19 Thermostat with automatic reset

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE1993603639 Expired - Fee Related DE69303639T2 (en) 1992-03-04 1993-02-19 Thermostat with automatic reset

Country Status (4)

Country Link
EP (1) EP0559517B1 (en)
DE (2) DE559517T1 (en)
ES (1) ES2046161T3 (en)
FR (1) FR2688340A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290415B (en) * 1994-06-15 1998-05-06 Creda Ltd Thermostatic switches for electric storage heaters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316718A1 (en) * 1975-06-30 1977-01-28 Ferodo Sa IMPROVEMENTS IN THE MOUNTING OF A THERMO-CONTACT IN A WALL
DE3304126C2 (en) * 1983-02-08 1985-07-25 Inter Control Hermann Köhler Elektrik GmbH & Co KG, 8500 Nürnberg Bimetal controlled spring disk thermal switch
EP0187480A1 (en) * 1984-12-05 1986-07-16 Elmwood Sensors Limited Temperature responsive switch
US4754252A (en) * 1987-06-02 1988-06-28 Elmwood Sensors, Inc. Thermostatic switch with improved cap disc assembly
US4952901A (en) * 1989-12-22 1990-08-28 Elmwood Sensors, Inc. Bimetallic disc assembly for thermostatic switch and disc retainer therefor

Also Published As

Publication number Publication date
DE69303639D1 (en) 1996-08-22
EP0559517B1 (en) 1996-07-17
ES2046161T1 (en) 1994-02-01
ES2046161T3 (en) 1996-10-16
DE69303639T2 (en) 1997-02-06
FR2688340B1 (en) 1997-02-14
FR2688340A1 (en) 1993-09-10
EP0559517A1 (en) 1993-09-08

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