EP0438793B1 - Schalteinrichtung - Google Patents

Schalteinrichtung Download PDF

Info

Publication number
EP0438793B1
EP0438793B1 EP90125631A EP90125631A EP0438793B1 EP 0438793 B1 EP0438793 B1 EP 0438793B1 EP 90125631 A EP90125631 A EP 90125631A EP 90125631 A EP90125631 A EP 90125631A EP 0438793 B1 EP0438793 B1 EP 0438793B1
Authority
EP
European Patent Office
Prior art keywords
pin
transmission pin
switch device
switching element
bush
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
EP90125631A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0438793A2 (de
EP0438793A3 (en
Inventor
Walter Hollweck
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.)
INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
Original Assignee
INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
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 INTER CONTROL Hermann Koehler Electrik GmbH and Co KG filed Critical INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
Publication of EP0438793A2 publication Critical patent/EP0438793A2/de
Publication of EP0438793A3 publication Critical patent/EP0438793A3/de
Application granted granted Critical
Publication of EP0438793B1 publication Critical patent/EP0438793B1/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
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Definitions

  • the invention relates to a switching device, in particular an electrical switching device, with the features of the preamble of claim 1.
  • DE-C-28 26 205 shows a temperature fuse for electrical devices with a base part made of insulating material, on one side of which a fixed contact and a moving contact attached to the free end of a contact spring are arranged and on the other side of which a thermal release is provided, whose release movement can be transmitted to the contact spring by means of a transmission pin guided in the base part.
  • the thermal trigger is, for example, a fuse insert in the case of temperature protection, the triggering movement of which is that the surface of the initially rigid fuse material lower when the superheating temperature is exceeded and thus when the melt material liquefies, causing the transfer pin shown to deflect downward under the pressure of the contact spring can. As a result, the release movement of the melt material insert is transferred to the contact spring.
  • transmission pins are also used in electrical switching devices with other thermal triggers, for example in switching devices, which are switched via bimetallic spring washers, capillary tube pressure sockets or other activators.
  • the prerequisite for the invention is that a transmission pin is provided in a base of some kind, which transmits a movement of a triggering device to a switching element.
  • the procedure is generally that a number of transmission pins of different lengths are available, the conditions within the preassembled switch are measured using a gauge during the assembly process, and then a pin of suitable length is added. This necessitates having a large number of sorted pins of different lengths available, which are then separated out during the assembly process and inserted into the preassembled switch Need to become.
  • the stocking or selection of such pens of different lengths is complicated and expensive.
  • a thermal electrical switching device with a base part which has a switching element with at least one movable switching element part and comprises a thermal release, the triggering movement of which by means of a transmission pin on the moving part of the switching element is transferable.
  • the transmission pin is composed of two telescopically arranged parts, the outer part is designed as a radially stretchable part that is held on the inner part with a clamp fit, the effective length of the transmission pin is set by exerting axial pressure on the transmission pin.
  • the invention has for its object to develop a switching device with the features of the preamble of claim 1 such that high switching forces are transferable with a simple length determination of the transmission pin and in particular thermal influences can not lead to a variation or adjustment of the length of the transmission pin.
  • This object is achieved by the characterizing features of claim 1, advantageous further developments result from subclaims 2-5.
  • the outer, sleeve-like part made of deformable material in the final state of the press-in, supports the lower end of the inner part by means of a bead or a step. If one speaks of the lower end of the inner part, it is only so the outermost edge of the lower end, which can be supported on the bead.
  • the formation of a bead or step means that even with strong thermal changes and the associated thermal expansions of the materials, there is no loosening in the pin area, which can lead to a change in the length of the pin.
  • the inner part can be very easily pressed into the outer, sleeve-like part.
  • the transmission pin can also serve as a fuse and thus takes on a double function.
  • the switching device 1 consists of a base part, d. H. an insulating base 2, on one side 3 of which a fixed contact 4 and a moving contact 7 fastened to the free end 5 of a contact spring 6 are arranged and on the other side 8 of which a thermal trigger in the form of a fusible link insert 9 is arranged, the triggering movement of which is guided by a guide in the insulating base 2 Transfer pin 10 is transferable to the contact spring 6.
  • the transmission pin 10 consists of the parts 11 and 9 and is designed to be variable in length in that the part 11 can be pressed into the fusible link insert which forms a sleeve by exerting axial pressure in the direction of the arrows 13.
  • FIG. 2 An embodiment of an electrical switching device with a length-adjustable transmission pin 10 results from FIG. 2, this switching device essentially having the same components as FIG. 1, but now instead of a fusible link insert 9 (as in FIG. 1), a bimetal -Spring disc 20 is provided, which is arranged below the part 12 of the transmission pin 10 and cooperates with this part 12.
  • part 11 is an insulating pin
  • part 12 is a metallic sleeve which surrounds the lower end 14 of the insulating pin (part 11).
  • the length of the sleeve formed by the part 12 is about 20 to 50% of the insulating pin length, the inner diameter of the sleeve 12 relative to the diameter of the insulating pin 11 is dimensioned such that it can only be pressed into the sleeve 12 when the sleeve material is radially deformed.
  • the end 14 of the insulating pin is conical, spherical or rounded and thus has sliding inclined surfaces which can press the sleeve material apart somewhat when pressure is applied to the transfer pin 10 in the direction of the arrow 13.
  • the sleeve 12 is made of deformable material, it will then expand and deform somewhat radially when the insulating pin 11 is pressed in. It is important that the part 11 is held in the part 12 with a press fit which is dimensioned sufficiently strong that the transmission pin 10 can fully fulfill its transmission function within the insulating base 2.
  • protrusions or teeth or the like in the area of the clamping seat surfaces, for example on the inner surface of the sleeve or on the outer surface of the insulating material pin, in order to reduce the friction between increase these two parts if necessary.
  • part 12 facing the lower end 14 of part 11 has a radially inward deformation 21, in the manner of an inner bead on the inner circumference of part 12.
  • the bead 21 is pushed in front of the part 11 during the press-in process, in such a way that this inner bead 21 ultimately displaces to the lower region of the sleeve-shaped part 12 has been, the part 12 consists of a deformable material.
  • the part 12 is essentially pot-shaped and provided with a flanged edge 23 in the region of its upper opening is, while the part 12 has a curved or arched bottom 22 in its lower region. This configuration results in defined length ratios.
  • the other part 11 of the transmission pin 10 is in turn pressed into the cup-shaped part 12 by applying axial pressure in the direction of the arrow 13, as a result of which the transmission pin 10 can be changed in length.
  • 5 and 6 are each a transmission pin 10 without a soldering iron insert.
  • the design of the pot-like sleeve part In contrast to the embodiment according to FIG. 5, 12 according to FIG. 6 has a lower floor 22 that is curved outward or practically round.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Manufacture Of Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Fuses (AREA)
EP90125631A 1990-01-23 1990-12-28 Schalteinrichtung Expired - Lifetime EP0438793B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001790 1990-01-23
DE4001790A DE4001790C1 (enrdf_load_stackoverflow) 1990-01-23 1990-01-23

Publications (3)

Publication Number Publication Date
EP0438793A2 EP0438793A2 (de) 1991-07-31
EP0438793A3 EP0438793A3 (en) 1992-07-22
EP0438793B1 true EP0438793B1 (de) 1995-08-09

Family

ID=6398551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125631A Expired - Lifetime EP0438793B1 (de) 1990-01-23 1990-12-28 Schalteinrichtung

Country Status (5)

Country Link
US (1) US5138297A (enrdf_load_stackoverflow)
EP (1) EP0438793B1 (enrdf_load_stackoverflow)
JP (1) JP2607753B2 (enrdf_load_stackoverflow)
KR (1) KR100237092B1 (enrdf_load_stackoverflow)
DE (2) DE4001790C1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2755122B2 (ja) * 1993-08-26 1998-05-20 オムロン株式会社 スイッチ装置
JPH087730A (ja) * 1994-06-16 1996-01-12 Wako Denshi Kk サーモスタット
US5734312A (en) * 1995-06-26 1998-03-31 Black & Decker Inc. Overtemperature protection assembly for an appliance
ES2155788B1 (es) * 1999-06-09 2001-12-01 Bsh Krainel Sa Termofusible de proteccion perfeccionado.
DE10033354C1 (de) * 2000-07-08 2002-01-24 Tsb Thermostat Und Schaltgerae Thermisch gesteuerte, elektrische Schaltvorrichtung
AT409680B (de) * 2001-04-17 2002-10-25 Electrovac Temperaturbegrenzer
DE102005060965B4 (de) * 2005-06-28 2007-08-16 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Thermische Sicherung mit Verfahren zu ihrer Herstellung
AT512814B1 (de) * 2012-04-17 2014-01-15 Elektronik Werkstaette Ing Wurmb Ges M B H Temperaturempfindlicher elektrischer Schalter
US9443683B2 (en) 2012-04-24 2016-09-13 Commscope Technologies Llc RF thermal fuse
DE102023131948B3 (de) * 2023-11-16 2025-04-17 BHTC GmbH Verfahren zum Ausgleich von Bauteil- und/oder Montagetoleranzen von Bedienelementen einer Bedienvorrichtung und Bedienvorrichtung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762888A (en) * 1953-09-10 1956-09-11 Gen Motors Corp Refrigerating apparatus
US2831090A (en) * 1957-04-29 1958-04-15 Knapp Monarch Co Switch blade construction
US3062989A (en) * 1957-05-22 1962-11-06 Mc Graw Edison Co Capacitor protective circuit and apparatus
US3885222A (en) * 1972-06-06 1975-05-20 Robertshaw Controls Co Thermostat construction
DE2339674C2 (de) * 1973-08-04 1989-09-21 Thermostat-und Schaltgerätebau GmbH & Co KG, 8730 Bad Kissingen Temperaturregler mit Schmelzmetallsicherung
DE2613690A1 (de) * 1976-03-31 1977-10-13 Bayerische Motoren Werke Ag Tuerschalter, insbesondere fuer kraftfahrzeuge
US4090166A (en) * 1976-09-10 1978-05-16 B/K Patent Development, Inc. Switch structure and calibration technique
DE2826205C2 (de) * 1978-06-15 1986-11-20 Inter Control Hermann Köhler Elektrik GmbH & Co KG, 8500 Nürnberg Temperatursicherung für elektrische Geräte
US4220939A (en) * 1979-02-12 1980-09-02 Emerson Electric Co. Thermal responsive electrical switching device and calibration method therefor
US4249154A (en) * 1979-02-12 1981-02-03 Emerson Electric Co. Temperature responsive electrical switching device and method of calibrating
CA1152135A (en) * 1980-11-21 1983-08-16 Karl O. Steinke Thermal switch and method of assembly and tool used therein
FR2521770B1 (fr) * 1982-02-17 1986-10-17 Seb Sa Coupe-circuit thermique pour appareils a chauffage electrique
US4663606A (en) * 1986-03-24 1987-05-05 Gte Products Corporation Bimetal circuit breaker
AT387101B (de) * 1986-12-18 1988-12-12 Electrovac Verfahren und einrichtung zur justierung eines thermischen schalters
DE3735334A1 (de) * 1987-10-19 1989-04-27 Thermostat & Schaltgeraetebau Thermisch gesteuerte elektrische schalteinrichtung

Also Published As

Publication number Publication date
DE4001790C1 (enrdf_load_stackoverflow) 1991-05-02
EP0438793A2 (de) 1991-07-31
US5138297A (en) 1992-08-11
KR100237092B1 (ko) 2000-01-15
JPH04212234A (ja) 1992-08-03
DE59009507D1 (de) 1995-09-14
EP0438793A3 (en) 1992-07-22
KR910014969A (ko) 1991-08-31
JP2607753B2 (ja) 1997-05-07

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