EP0182487B1 - Thermostat - Google Patents

Thermostat Download PDF

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Publication number
EP0182487B1
EP0182487B1 EP19850307253 EP85307253A EP0182487B1 EP 0182487 B1 EP0182487 B1 EP 0182487B1 EP 19850307253 EP19850307253 EP 19850307253 EP 85307253 A EP85307253 A EP 85307253A EP 0182487 B1 EP0182487 B1 EP 0182487B1
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EP
European Patent Office
Prior art keywords
base
thermostat
sliding member
movable connection
connection element
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
EP19850307253
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English (en)
French (fr)
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EP0182487A3 (en
EP0182487A2 (de
Inventor
Pietro De Filippis
Ciro Calenda
Giuseppe Notaro
Henry Boulanger
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Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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
Priority claimed from IT49059/84A external-priority patent/IT1179473B/it
Priority claimed from IT48273/85A external-priority patent/IT1181972B/it
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of EP0182487A2 publication Critical patent/EP0182487A2/de
Publication of EP0182487A3 publication Critical patent/EP0182487A3/en
Application granted granted Critical
Publication of EP0182487B1 publication Critical patent/EP0182487B1/de
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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5866—Electric connections to or between contacts; Terminals characterised by the use of a plug and socket connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H01H2011/062—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier by inserting only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H01H2011/067—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier by deforming, e.g. bending, folding or caulking, part of the contact or terminal which is being mounted
    • 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
    • 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
    • H01H2037/549—Details of movement transmission between bimetallic snap element and contact

Definitions

  • the present invention relates to a single-temperature thermostat, provided with a bimetallic element sensitive to a given intervening and restoring temperature and starts from the GB-A-1'094'944.
  • thermostats with bimetallic elements are already known from the prior art. These thermostats are, however, of complex structure and thus expensive, and tend to have space requirements that often pose mounting problems.
  • a thermally operated switch having a bimetallic disc held in place by a lid at the open end of a cup-shaped housing with a movable switch contact capable of interconnecting fixed switch contacts located in the housing.
  • the movable contact is urged towards the fixed contacts by a spring and has attached to it a rod extending towards the centre of the bimetallic disc, so that in one position of the disc the movable contact is held away from the fixed contact and in the other position of the disc the movable contact is held against the fixed contacts by the spring.
  • FR-A-2,167,696 discloses a similar form of switch having three movable switch contacts symmetrically distributed around the axis of the switch with a central screw for adjustment of the spacing between bimetallic disc and the sliding member supporting the movable switch contacts.
  • An object of the present invention is therefore to provide a one-temperature thermostat with a bimetallic element having a simple structure and able to assure optimal reliability.
  • a thermostat comprising a monolithic base having a chamber open at one end, two terminals attached to the base and connectable to an electrical circuit, each terminal having one end bent at right angles and carrying a stationary contact located in the chamber, a movable connection element movable between a position interconnecting the stationary contacts and a position spaced from the stationary contacts, a spring mounted in a seat on the base to bias the movable connection element into one of its positions relative to the stationary contacts, a snap-action thermally responsive bimetallic element capable of movement between a relaxed state and a thermally produced stressed state, a sliding member operatively connected to move the movable connection element from one to the other of its positions against the biasing of the spring in response to a movement of the bimetallic element resulting from an increase in its temperature, the sliding member having a portion extending from the movable connection element towards the bimetallic element to be suitably spaced therefrom and lid means for retaining the bimetallic element on the base, CHARACTERIS
  • the above object is achieved by providing a monolithic cylindrical base, open at one end, wherein two terminals connectable to an electric circuit are inserted, having one of their ends bent 90° and carrying a stationary contact, an element carrying a movable contact that connects the said two stationary contacts by the action of a spring, and a sliding element able to raise the said movable contact by the effect of a bimetallic element fastened in the said open end of the base by means of a lid.
  • the said lid is shaped so as to pass all vertical stresses onto the said rim of the base, thus preventing any interferences on the disc on the part of the lid in consequence of blows or deformations accidentally suffered by the latter.
  • Fig. 1 shows a first embodiment of a thermostat according to the invention.
  • the said thermostat consists of a cylindrical base or body 1 of plastic material having a lower cavity 18.
  • two slits 17 are provided which pass from the lower cavity to the outside through the upper closed wall of body 1.
  • a cylindrical seat 19 is provided in which a helical spring 6 is mounted whose upper end is supported on the bottom of said seat 19.
  • terminals 7 and 8 are inserted whose lower ends are bent at right angles and each carrying a contact 9.
  • a rod 4 of ceramic material is inserted on which, with a force fit, a contact plate 5 of steel or other magnetic material is slipped which supports itself on the said two contacts 9 of terminals 7 and 8 so the plate 5 and rod 4 are fixed together and movement of the rod is guided in the seat 19.
  • the union between rod 4 and contact plate 5 is calibrated so that the lower end of the said rod 4 is slightly above a conventional thermally responsive, snap-acting bimetallic disc 3 whose rim is captured between a shoulder 1.1 at the mouth of cavity 18 and the upward bent rim of a lid 2.
  • Preferably ends of the plate 5 are guided in a groove 5.1 in the body.
  • the said lid 2 is shaped cylindrically around on the outside with a flared rim 2.1 so as to allow its application on the base by way of a simple forced insertion of lid 2 resting on the edge 1.2 of base 1 in a simple die of circular configuration. This manner of fastening the said lid is much faster and much more effective than rolling or folding as presently used.
  • the said lid 2 is shaped so as to unload vertical stresses, caused by possible deformations of the lid when in operation, onto the rim 1.2 of base 1, thus absolutely preventing any deformations or stresses of the lid from being transmitted to the bimetallic disc and thus altering its characteristics.
  • the lid 2 has a circular projection 23 which closely follows the internal flange or shoulder 1.1 of base 1, the said bimetallic disc 3 being wedged between said circular projection 23 and said internal flange of base 1.
  • Figs. 7A and 7B show another design of lid wherein the circular projection 23 is replaced by four projecting sectors 33 uniformly distributed over a circular circumference, which equally function as support of the disc and assist in calibration of the thermostat.
  • the terminals 7 and 8 made in one piece, preferably have a tongue 20 as shown in Figs. 1 and 2 which during mounting enmeshes itself in the terminal inside the base until a terminal shoulder 7.1, 8.1 engages the base but which is then dislodged into narrow slot 1.3 in the base for wedging it against a corresponding shoulder 16 on the outside of the said base.
  • the terminals 7, 8 can be bent against above tongue 20 around a shoulder 22 along side the narrow slot 1.3 without their strong fixation inside the base being impaired thanks to the combined action of tongue 20 and shoulder 16 and 22 which act in unison toward improving the said fixation.
  • the terminals have small teeth 21 which engage, during mounting, in corresponding cutouts of said base 1, as shown in Fig. 3.
  • a terminal 7 has three sectors 7, 7' and 7'' of decreasing widths which are joined laterally by marginal grooves 30 and 31 of equal radiuses.
  • Figs. 4 and 5 show a second embodiment of the invention, which differs from that shown in Fig. 1 in that the rod 4 of ceramic material is replaced by a motion transfer guide plate 13 preferably of insulating material such as plastic, ceramic or similar material, which is guided into diametrically opposed grooves 15, made in the cavity 18.
  • a contact plate 14 carrying movable contacts is fastened, in the manner similar to plate 5 of the first embodiment.
  • a guide plate 13 preferably has raised edges 13.1 and a central depression 13.2 and the contact plate has grooves 14.1 fitted around parts of the raised edges 13.1 of the guide plate in this case, the guide plate 13 and contact-holding plate 14 also moved together but the movement is guided by the grooves 15 and not by the seat 19 as in the version of Fig. 1.
  • the said plate 13 has a lug 21 whose distance from bimetallic disc 3 is suitably chosen, in accordance with the type of bimetal used to provide a desired calibration of the thermostat.
  • Figs. 9A and 9B Another kind of calibration is shown schematically in Figs. 9A and 9B.
  • the movable contact plate 14 has a V-shaped notch 35 at its center which facilitates bending of the said plate by a force 35.1 as indicated in Fig. 9A to an extent desired and thus permit the calibration of the distance of the guide plate 13 from the said bimetallic disc.
  • the said notch prevents, moreover, an application of larger bending forces that could damage the rim of the base on which the movable contact plate 14 supports itself.
  • the guided plate 13 preferably has two lateral projections 34, as shown in Fig. 10, which serve to pose a substantially longer resistance path to the passage of creep surface currents that could otherwise travel from the plate 14 along the insulator 13 and unload onto the bimetallic element and thus on the lid.
  • the said lid 2 has a circular projection 23 that closely follows the inner flange of base 1, the said bimetallic element being fastened to said inner flange of the base by said circular projection 23 of the lid when the latter is fastened on base 1.
  • the monolithic base as shown schematically in perspective view in Fig. 11, has a useful surface 36 for the application of a clip 36.1 for mounting the thermostat on the based to be thermostated, this being made possible by virtue of the fact that terminals 7, 8 are separated from the ring by two barriers 37 formed in the monolithic base itself.
  • 100 in Fig.12 indicates the novel and improved thermostat of this invention which is shown to include a generally cylindrical cup-shaped base 102 of a generally rigid, ultrasonically fusible, electrically insulating organic material or the like having a cavity 104 open at one end, having a pair of terminal slits 106 extending through the bottom 108 of the base, having a pair of locating shoulders 110 on the base at each side of the respective terminal slits 106 inside the base cavity (see Figs.
  • a seat 118 is formed in the bottom of the base cavity between the terminal slits 106, and a pair of grooves 120 are provided in the wall of the base cavity at opposite sides of the seat 118.
  • a pair of L-shaped strip terminals 122 are each provided with a plurality of portions 122.1, 122.2 and 122.3 of progressively narrower width in the longer leg 122.4 of the terminal and have scallops or notches 122.5 formed in the edges of that terminal leg.
  • the shorter leg 122.6 of the terminal has a stationary electrical contact 124 secured thereto, preferably by riveting or the like as shown, and, if desired, an opening 122.7 is provided in each terminal to facilitate precise bending of the terminal at the junction of the legs.
  • each terminal 122 has its longer leg inserted into a terminal slit 106 and pressed into the slit as indicated in Fig. 16 by the arrow 122 a while ultrasonic energy is applied to the slit area of the base in any conventional manner (not shown) so that the relatively wider strip portions 122.1, 122.2 and 122.3 of the terminal are progressively pushed into a slit 106 and are embedded in the lateral walls of the base adjacent the slit, while the scallops are filed with the ultrasonically fusible base material as will be understood, until respective lateral edges of the shorter base leg 122.6 engage respective locating shoulders 110 on the base, thereby to locate the terminals 122 in the base for precisely positioning the stationary contact 124 as shown in Fig.
  • the distal ends of the longer terminal legs 122.4 are then bent as shown in Fig.12 to bear against corresponding locating shoulders 114 on the outer side of the base.
  • pushing of quick connect connectors or the like onto the terminal ends as is diagrammatically illustrated by the broken lines 125 in Fig. 12 in making electrical connection to the terminals does not tend to displace the terminals 122 from their desired assembled position ultrasonically sealed in the slits 106 as will be understood.
  • the distal terminal ends extend from the thermosat 100 in the direction shown but it will be understood that the terminal ends may be bent in any direction to make desired electrical connection without tending to disturb the seating of the terminals in the base.
  • a helical coil compression spring 127 is disposed in the base seat 118.
  • a flat metal movable contact element 128, preferably of a steel or other magnetic, electrically conductive metal material has a pair of movable contacts 30 secured thereto, preferably be riveting or the like, in spaced relation to each other to engage the stationary contacts 124 and a slit 128.1 is provided in the movable contact element.
  • the movable contact element 128 is adapted to be readily blanked from a strip material in a low cost manufacturing procedure.
  • a flat metal motion transfer element 132 is also adapted to be inexpensively blanked from a strip material with a configuration as shown generally in Fig.15 wherein a tab 132.1 is located atone edge of the strip adapted to be inserted into the movable contact element slit 128.1 and to be riveted or expanded therein for securing the motion transfer element in the movable contact element together as is diagrammatically illustrated in Fig. 15. Lateral edges 132.2 of the motion transfer element are proportioned to be slidably received in the respective grooves 120 in the base and an opposite edge of the motion transfer element has an extending portion 132.3.
  • the movable contact element with the attached motion transfer element is then disposed on the spring 127 so that the spring biases the movable contact element into electrical engagement with the stationary contacts 124 for interconnecting the stationary contacts and for disposing the extending portion 132.3 of the motion transfer element at a selected location adjacent the open end of the base 102.
  • a conventional dished, thermostat metal disc element 134 is disposed with its perimeter 134.1 resting on the base shoulder 114 and a thin pliable film 136 of an electrically insulating material such as a polyimide material or the like sold under the name Kapton is disposed over the thermostat element as shown in Fig. 1.
  • a magnet is positioned to draw the movable contact element 128 and motion transfer element 132 down into the base cavity 104 against the bias of the spring 118 as shown in the noted copending patent application to facilitate assembly of the disc and film in the thermostat 100.
  • a cup-shaped metal lid 138 is then disposed over the open base end and has its rim 138.1 swaged or otherwise formed over the base flange 116 for securing the lid to the base, the base having an annular ridge 138.2 formed therein to be positioned adjacent the rim 134.1 of the thermostat element, thereby to cooperate with the base shoulder 114 in precisely locating the thermostat element 134 with a selected spacing a relative to the extending portion 132.3 of the motion transfer element.
  • the thermostat element 134 is adapted to move to an inverted dished configuration with snap action in conventional manner when the thermostat element is heated to a selected actuating temperature, thereby to engage the extending portion 132.3 of the motion transfer element as will be understood for moving the movable contact element 128 against the bias of the spring 118 to disengage the stationary contacts 124 and open the circuit between the device terminals 122. Then, upon subsequent cooling downs to a relatively lower reset temperature, the thermostat element is adapted to return to its original dished configuration as shown in Fig 12 with snap action for permitting the bias of the spring 118 to reengage the movable contact element with the stationary contacts for reclosing the device circuit.
  • the lid 138 is thermally conductive for readily transmitting heat to the thermosat element 134 from a temperature zone being monitored by the thermostat 100.
  • the motion transfer element 132 preferably has a slit 132.4 therein located between the tab 132.1 and the extending portion 132.3 of the element, whereby, when the transfer element is secured together with the movable contact element 128 by pressing in the direction diagrammatically illustrated by the arrows 140 in Fig.15 the motion transfer element is adapted to be selectively compressed as is diagrammatically illustrated at 132.5 for providing a precise spacing between the movable contact 128 and the extending portion 132.3 of the transfer element.
  • the extending portion 132.3 of the motion transfer element is adapted to be easily and precisely located so it is accurately spaced relative to the thermostat element 134 to permit initial creep action of the thermosat element without causing opening of the thermostat contacts but is then adapted to provide sharp snap acting movement of the movable contact element when the thermostat circuit is to be opened in response to the selected temperature change.
  • the thermostat 100 is characterized by utilizing low cost, easily manufactured and assembled components and is also characterized by accurate thermal response characteristics as assembled, each thermostat component being individually characterized by low cost manufacture and by ease of assembly and the thermostat as a whole being characterized by reliable and accurate assembly.

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

Claims (11)

  1. Thermostat (100), der eine monolithische Basis (1,102) mit einer offenen Kammer an einem Ende aufweist, sowie zwei Anschlüsse (7,8,122), die an der Basis befestigt sind und mit einer elektrischen Schaltung verbunden werden können, wobei jeder Anschluß (7,8,122) ein rechtwinklig gebogenes Ende aufweist, das einen stationären Kontakt (9,124) trägt, der sich in der Kammer befindet, ein bewegliches Verbindungselement (5,128,130), das zwischen einer Position, die die stationären Kontakte untereinander verbindet, und einer von den stationären Kontakten beabstandeten Position bewegbar ist, eine Feder (6,127), die in einem Sitz (19,118) an der Basis gelagert ist, um das bewegliche Verbindungselement in eine seiner Positionen relativ zu den stationären Kontakten vorzuspannen, ein mit Schnappwirkung thermisch ansprechendes Bimetallelement (3,134), das in der Lage ist, sich zwischen einem entspannten und einem thermisch erzeugten, gespannten Zustand zu bewegen, ein Gleitelement (4,132), das wirksam verbunden ist, um das bewegliche Verbindungselement (5,128,130) gegen die Vorspannung der Feder (6,127) in Reaktion auf eine Bewegung des Bimetallelements (3,134), die sich aus einer Erhöhung seiner Temperatur ergibt, aus der einen in die andere seiner Positionen zu bewegen, wobei das Gleitelement (4,132) einen Abschnitt aufweist, der sich von dem beweglichen Verbindungselement (5,128,130) zu dem Bimetallelement in geeignetem Abstand erstreckt, sowie Deckelmittel (2,138) zum Halten des Bimetallelements (3,134) an der Basis (1,102), dadurch gekennzeichnet, daß das Gleitelement (4,132) mit dem beweglichen Verbindungselement (5,128,130) wirksam so verbunden ist, daß es durch Biegen eines Teils oder durch Gleiten eines Teils relativ zu dem anderen durch Kraft eingestellt werden kann, und daß das Gleitelement (4,132), das bewegliche Verbindungselement (5,128,130) oder ihre relative Position so eingestellt ist, daß das Ende des Gleitelements (4,132) einen vorbestimmten Abstand von dem Bimetallelement (3,134) im entspannten Zustand aufweist, wenn der Thermostat zusammengesetzt ist und das bewegliche Verbindungselement (5,128,132) sich in der Position befindet, in die es durch die Feder vorgespannt ist.
  2. Thermostat nach Anspruch 1, weiter dadurch gekennzeichnet, daß das Gleitelement (4,132) aus einem Stab besteht, der über einen Preßsitz mit dem beweglichen Verbindungselement (5,128,132) verbunden ist, wobei die Verbindung keine Rückfederung aufweist, so daß das Ende des Stabes genau auf den erforderlichen Abstand von dem Bimetallelement eingestellt werden kann.
  3. Thermostat nach Anspruch 1, weiter dadurch gekennzeichnet, daß das Gleitelement (13) in Nuten in der Basis verschiebbare seitliche Kanten (13.1) aufweist, daß das Gleitelement einen gekrümmten Ansatz (21) mit einem Radius aufweist, der nicht größer ist als der zwischen den Nuten geführte Teil, so daß dem Gleitelement mögliche Bewegungen und/oder Einstellungen innerhalb der Nuten mit minimaler Reibung sowie ohne Änderung des Kalibrierungsabstands zwischen dem Ansatz und dem Bimetallelement erlaubt sind, und daß das Gleitelement (13) zwei seitliche Vorsprünge (34) aufweist, um einen bedeutenden Oberflächenkriechwiderstand dem Durchgang von Oberflächenkriechströmen von der beweglichen Kontaktplatte aufzuerlegen, um zu verhindern, daß diese Ströme dem Bimetallelement (3,134) und dem Deckel (2,138) zugeführt werden.
  4. Thermostat nach Anspruch 1, weiter dadurch gekennzeichnet, daß die Anschlüsse (7, 8) jeweils aus einem Stück hergestellt sind und mittels einer an den Anschluß angeformten Zunge (20) an ihrem Platz in der Basis gehalten sind.
  5. Thermostat nach Anspruch 4, weiter dadurch gekennzeichnet, daß die Anschlüsse (7, 8) in einem Winkel über der Zunge (20) um eine Schulter (22) an der Basis (1) gebogen werden können.
  6. Thermostat nach Anspruch 1, weiter dadurch gekennzeichnet, daß der Deckel (2) einen kreisförmigen Vorsprung (23) aufweist, der einem inneren Flansch (1.1) der Basis (1) dicht folgt, wobei das Bimetallelement (3) zwichen dem inneren Flansch der Basis und dem kreisförmigen Vorsprung des Deckels gefangen ist, so daß es keine vertikalen Verformungen oder Belastungen erleidet, denen der Deckel unterworfen sein kann.
  7. Thermostat nach Anspruch 3, weiter dadurch gekennzeichnet, daß der Deckel (2) Vorsprünge (33) aufweist, die im gleichen Abstand voneinander an einem gemeinsamen Umfang angeordnet sind, wobei die Vorsprünge als Stützen für das Bimetallelement (3) fungieren, so daß nach der Bestimmung des tatsächlichen Punktes, an dem der Ansatz (21) an dem Gleitelement (13) mit den Kontakten in der geschlossenen Position liegt, eine weitere Einstellung des Thermostats dadurch vorgenommen werden kann, daß die Vorsprünge zusammengedrückt werden, um das Spiel zwischen dem Bimetallelement (3) und dem Ansatz (21) zu verändern, wobei die Vorsprünge so ausgestaltet sind, daß sie einen Fehler aufgrund einer Rückfederung ausschließen.
  8. Thermostat nach Anspruch 1, weiter dadurch gekennzeichnet, daß das bewegliche Verbindungselement (14) eine V-förmige Kerbe (35) in seiner Mitte aufweist, um eine Kalibrierung des Thermostats durch Aufbringen einer Biegekraft auf das bewegliche Verbindungselement zu ermöglichen.
  9. Thermostat nach Anspruch 1, dadurch gekennzeichnet, daß das bewegliche Verbindungselement (128) ein flaches Blechelement mit einem Schlitz (128.1) aufweist, das Gleitelement (132) ein flaches Blechelement mit einem Dorn (132.1) an einer Kante aufweist, der in den Schlitz (128.1) paßt, um das Gleitelement an dem beweglichen Verbindungselement zu sichern, wobei das Gleitelement auch einen von dem Dorn entfernten, gegenüberliegenden Kantenbereich für den Eingriff des Bimetallelements (134) sowie seitliche Kantenteile (132.2) aufweist, die mit den Nuten (120) verschiebbar in Eingriff stehen, um das Element in der Basis zu führen und einen Schlitz (132.4) zwischen dem Dorn und dem von dem Dorn entfernten Bereich, wodurch die Einstellung des Abstandes zwischen dem Dorn und dem entfernten Bereich erlaubt wird, um die genaue Positionierung des entfernten Bereichs relativ zu dem beweglichen Verbindungselement zu ermöglichen.
  10. Thermostat nach Anspruch 9, weiter dadurch gekennzeichnet, daß ein dünner, elektrisch isolierender Film (136) über dem Bimetallelement (134) zwischen ihm und dem Gleitelement (132) angebracht ist, der das Bimetallelement (134) und den Deckel (138) von dem Gleitelement elektrisch isoliert.
  11. Thermostat nach Anspruch 9 oder 10, weiter dadurch gekennzeichnet, daß die Basis zwei Schlitze (106) im Basisboden aufweist, Fixierschultermittel innerhalb der Basis, angrenzend an die betreffenden Anschlußschlitze, und Fixierschultermittel (112) an der Außenseite der Basis, angrenzend an die betreffenden Anschlußschlitze, wobei jeder Anschluß (122) ein L-förmiges Anschlußelement mit einem längeren und einem kürzeren Schenkel aufweist, mit einem stationären Kontakt (124), der an dem kürzeren Schenkel angebracht ist, sowie mehrere Abschnitte (122.5) des längeren Schenkels mit zunehmend engerer Breite und mit bogenförmigen Ausschnitten entlang seitlicher Kanten, und wobei die längeren Anschlußschenkel in die betreffenden Anschlußschlitze im Boden der Basis eingefügt und ultraschallversiegelt werden, wobei die kürzeren Anschlußschenkel an Fixierschultermitteln innerhalb der Basishöhlung anliegen, wobei die längeren Anschlußschenkel außerhalb der Basis weiter in Eingriff mit den betreffenden Fixierschultermitteln außerhalb der Basis gebogen sind, wodurch die Anschlüsse formschlüssig in der gewünschten Position im Boden der Basis aufgenommen sind und darin gehalten werden, selbst wenn sie axial aufgebrachten Kräften unterworfen werden, wenn die Anschlüsse in einer elektrischen Schaltung angeschlossen werden.
EP19850307253 1984-10-24 1985-10-10 Thermostat Expired - Lifetime EP0182487B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT49059/84A IT1179473B (it) 1984-10-24 1984-10-24 Termostato monotemperatura ad elemento bimetallico
IT4905984 1984-10-24
IT4827385 1985-06-24
IT48273/85A IT1181972B (it) 1985-06-24 1985-06-24 Perfezionato nei termostati mono temperatura ad elemento bimetallico

Publications (3)

Publication Number Publication Date
EP0182487A2 EP0182487A2 (de) 1986-05-28
EP0182487A3 EP0182487A3 (en) 1988-11-17
EP0182487B1 true EP0182487B1 (de) 1993-02-03

Family

ID=26329297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850307253 Expired - Lifetime EP0182487B1 (de) 1984-10-24 1985-10-10 Thermostat

Country Status (2)

Country Link
EP (1) EP0182487B1 (de)
DE (1) DE3587064T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1187602B (it) * 1985-11-05 1987-12-23 Bruno Martinetti Interruttore universale a linguette contattori integrali
FR2618597A1 (fr) * 1987-07-22 1989-01-27 Jaeger Contacteur electrique thermostatique
US5576683A (en) * 1995-06-13 1996-11-19 Therm-O-Disc, Incorporated Thermostat with thermal insulator for protection against overheating

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839640A (en) * 1957-04-24 1958-06-17 Metals & Controls Corp Thermostats
NL103902C (de) * 1958-04-04
GB1094944A (en) * 1966-09-29 1967-12-13 Stevens Mfg Co Inc Improvements in or relating to fire detecting thermal electric switches
GB1263167A (en) * 1969-07-17 1972-02-09 Gen Electric Co Ltd Improvements in or relating to thermally responsive devices
DE7200272U (de) * 1972-01-05 1972-05-04 Thermostat- Und Schaltgeraetebau Gmbh & Co Kg Wärmeschalter mit Bimetallfühler
CA1152135A (en) * 1980-11-21 1983-08-16 Karl O. Steinke Thermal switch and method of assembly and tool used therein

Also Published As

Publication number Publication date
EP0182487A3 (en) 1988-11-17
EP0182487A2 (de) 1986-05-28
DE3587064D1 (en) 1993-03-18
DE3587064T2 (de) 1993-05-19

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