EP0778596B1 - Interrupteur avec un mécanisme de commutation sensible à la température - Google Patents

Interrupteur avec un mécanisme de commutation sensible à la température Download PDF

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Publication number
EP0778596B1
EP0778596B1 EP96114995A EP96114995A EP0778596B1 EP 0778596 B1 EP0778596 B1 EP 0778596B1 EP 96114995 A EP96114995 A EP 96114995A EP 96114995 A EP96114995 A EP 96114995A EP 0778596 B1 EP0778596 B1 EP 0778596B1
Authority
EP
European Patent Office
Prior art keywords
switch
projection
contact
spring
spring washer
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
EP96114995A
Other languages
German (de)
English (en)
Other versions
EP0778596A3 (fr
EP0778596A2 (fr
Inventor
Marcel Hofsäss
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.)
HOFSAESS, MARCEL
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0778596A2 publication Critical patent/EP0778596A2/fr
Publication of EP0778596A3 publication Critical patent/EP0778596A3/fr
Application granted granted Critical
Publication of EP0778596B1 publication Critical patent/EP0778596B1/fr
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
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • 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
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit

Definitions

  • the present invention relates to a switch with a temperature-dependent switchgear, one that receives the switchgear Housing, which is a lower part and a closing this Has cover part, and one provided on the inside of the cover part first and one provided on the inside of the lower part second counter contact, the switching mechanism being an electrical conductive spring part, which in one of its switching positions with both the first and the second counter contact is in plant.
  • Such a temperature-dependent switch is from DE 29 17 482 C2 known.
  • the known switch is used to control the temperature of a device to monitor. To do this, it is connected in series via its external connections switched with the device to be monitored and arranged so that the temperature of the device to be monitored is the temperature of a bimetallic part. Will the switching temperature exceeded, the switching mechanism opens the connection between the two external connections, and the circuit above will be interrupted. If the temperature drops, the circuit becomes closed again, although not necessarily the case must be, there are also bistable temperature-dependent switches known.
  • the known switch has an electrically conductive one Lower part and one that closes it electrically conductive cover part existing housing, whereby for Isolation between the lower part and the cover part Insulating film is provided.
  • the switching mechanism has a spring washer as a spring part which fastens a movable contact with a flange that comes into contact with the first counter contact.
  • About the Spring washer is a bimetallic snap washer that below the switching temperature in the housing without forces is recorded.
  • the current flows through the conductive Cover part, the first counter contact; the moving contact, the spring washer and the conductive lower part, on which the Spring washer supports, so that the inner bottom the second Forms counter contact.
  • the external connection is made directly via Contacting of the lower part and cover part.
  • the snap If the switching temperature is exceeded, the snaps Bimetallic snap washer and presses the spring washer with her movable contact away from the first mating contact.
  • a comparable switch is known from DE 37 10 672 A1.
  • This so-called temperature monitor is designed to be self-retaining, thus includes a parallel to the bimetal switchgear switched heating resistor, which with the switch mechanism open Row is connected between the external connections and through heats the current flowing through it so far that he holds the bimetal switchgear above its switching temperature, so that it does not go back to the basic state.
  • the high-resistance parallel resistor is integrated in the cover part, either from insulating material or from an electrical conductive resistance material.
  • this object is achieved in the aforementioned Switch released in that on the first counter contact in the housing facing projection is provided, at least in one switch position into one provided in the spring part Opening protrudes.
  • the inventor of the present application has recognized that that surprisingly on the movable contact part on the Spring part can be dispensed with, and that the required electrical contact between the spring part and the mating contact can be effected and / or promoted in that on the Mating contact a projection is provided on which the spring washer with its opening, so to speak. Through this The spring washer in the housing of the new one Centered switch, so that in the final assembly committee an incorrectly inserted spring washer is avoided. Furthermore, cares the lead for a good, electrically conductive system of the Spring part on the first counter contact in the correct orientation.
  • the new switch has a number of advantages on.
  • the manufacturing costs are reduced by the one Reduced the number of components that can be found in the new switch are, since the new counter contact, so to speak, the previous movable Contact part and the previous mating contact replaced. Further it is no longer necessary to use the contact part before or during the final assembly of the switch on the spring washer, so that this manufacturing step is omitted.
  • the cost of stockpiling and the number of components but also the time required reduced for the final assembly, which is now also automatic can take place, whereby further committee is avoided.
  • the number of contact resistances the number of contact areas required is reduced to the bare minimum as the contact resistance between that used in the prior art movable contact part and the spring washer is eliminated.
  • the Quality of the total contact resistance of the switch So improved, also the problems with the material selection be resolved against the backdrop of aging.
  • the projection is made of electrical conductive material or from electrically insulating material is made.
  • the projection is in one piece can be formed with the mating contact if it also consists of electrically conductive material.
  • the lead made of insulating material, however, it only serves the guidance of the spring part relative to the counter contact, wherein he preferably as a guide pin to the bottom of the Can extend lower part.
  • the spring part is held captive on the projection.
  • the advantage here is that the spring part before final assembly of the switch on the attached to the cover part Protrusion attached and then e.g. by flanging or Welding can be captively connected to the projection. This also makes the assembly of the new switch strong Simplified, since the installation of a spring washer on one Automation is easier to automate than inserting one Spring washer in a generally pot-like housing.
  • the advantage here is that it is not absolutely necessary after plugging the spring part onto the projection additional measures such as flanging or welding for the to ensure captive hold. Rather, the spring washer overcoming a mechanical resistance over the thickened head pushed so that it snaps onto the projection. This measure also ensures a clear Easier final assembly of the new switch because of further manufacturing steps can be saved.
  • Spring part is a preloaded bimetallic snap disc, whereby on the other hand, it is preferred if the spring part has a bimetal snap disk is associated with its opening on the Projection is arranged.
  • the spring part itself is a preloaded bimetallic snap disc is a very simple rear derailleur, because on the additional spring washer used in the prior art can be dispensed with.
  • the bimetal snap disk ensures this both for the electrical contact between the two mating contacts as well as for the temperature-dependent switching of the Rear derailleur.
  • the cover part is made of electrical made of conductive material and the counter contact from the Material is deep-drawn, preferably also the projection is deep-drawn from the material.
  • Fig. 1 10 is a switch schematically in longitudinal section shown, which comprises a housing 11 in which a temperature-dependent Rear derailleur 12 is arranged.
  • the housing 11 comprises a lower part 14 and a closing part Cover part 15. Since both lower part 14 and Cover part 15 are made of electrically conductive material an insulating film 16 is arranged between them.
  • assembled state is the cover part by a flange 17 on the lower part 14 with the interposition of Insulating film 16 attached.
  • the electrical connection of the switch 10 takes place e.g. thereby, that both the lower part 14 and the cover part 15th Braids or crimp connections are soldered. Because of These connections are not clear in the drawing shown.
  • first mating contact 21 On the inside of the cover part 15 there is a first mating contact 21 its base 22 soldered or welded so that a electrically conductive connection between the first mating contact 21 and the cover part 15.
  • the first mating contact 21 also has one in the housing 11 facing projection 23, which in the in Fig. 1st
  • the exemplary embodiment shown is in one piece with the base part 22 is formed, so also made of electrically conductive Material exists.
  • Projection 23 made of an electrically insulating material manufacture and e.g. glue the base part 22.
  • the switching mechanism 12 arranged in the housing 11 comprises a Bimetallic snap disk 24 and one arranged below this Spring washer 25.
  • the bimetallic snap disk 24 and the Spring washer 25 are with their openings 26 and 27 on the Projection 23 arranged, the middle of the lid part 15th is provided so that the bimetallic snap disk by the selected arrangement 24 and the spring washer 25 in the housing 11 be centered.
  • the spring washer 25 is supported with its edge 28 on the inside Bottom 29 of the lower part 14, the second counter contact 30 acts.
  • the switching state shown in Fig. 1 there is thus an electrically conductive connection of the cover part 12 via the first Mating contact 21 and spring washer 25 to the lower part 14, wherein by the projection 23 in the sense of a centering effect it is ensured that the spring washer 25 and bimetallic snap disk 24 do not slip relative to the first mating contact 21; this increases the contact security.
  • the bimetallic snap disk 24 snaps from the one shown concave shape suddenly changes to a convex shape. It supports then with its edge 31 on the insulating film 16 above and presses the spring washer 25 down onto the bottom 29 of the Lower part 14. This makes the electrical contact with the first Counter contact 21 canceled, so that the switch 10, so to speak is open.
  • This centering is also in the final assembly of the new switch 10 is advantageous because when the cover part 15 is pushed on the lower part 14 an automatic centering of the previously in the lower part 14 inserted bimetallic snap disk 24 and Spring washer 15 takes place over the projection 23.
  • a thickened head 32 is arranged on the projection 23 by the bimetallic snap disk 24 and the spring washer 25 captive on the first counter contact 21 and thus on the Cover part 15 are held.
  • This head can follow one hand sliding the bimetallic snap disk 24 and the Spring washer 25 on the projection 23 by widening or Flanging can be generated, but it can also be done at the Manufacturing of the first counter contact 21 may be provided. in the the latter case, the head 32 is then dimensioned so that the Openings 26 and 27 are pushed over him under pressure can, so that bimetallic snap disk 24 and spring washer 25 engage the protrusion 23, so to speak.
  • bimetallic snap disk 24 it is not mandatory required, in addition to the bimetallic snap disk 24 to provide a spring washer 25.
  • the latter can namely then be dispensed with if the bimetallic snap disk 24 itself is designed as a prestressed spring part, so that it below its switching temperature the position shown in Fig. 2 occupies. Because the bimetallic snap disk 24 usually is also made of electrically conductive material, can therefore be used even for an electrical connection between provide the cover part 15 and the lower part 14.
  • the function of the switch 10 shown in FIG. 3 corresponds exactly that of the switch 10 shown in FIG. 1, the Lid part 15 is made easier.
  • the guide pin 35 is made of insulating material and, for example. glued to the nose 34. However, it is also possible to use the guide pin 35 to stick to the floor 29, so that he already at Insert bimetallic snap washer 24 and spring washer 25 its centering effect during the final assembly of the switch 10 exercises. However, the guide pin 25 is against the nose 34 glued, so when the switch 10 is finally assembled the bimetallic snap disk 24 and the spring washer 25 pushed the guide pin 35 before the lower part 14 inserted into the cover part 15 and crimped to it becomes.
  • a first counter contact 37 is provided, whose nose 38 is through the openings 26 and 27 in bimetallic snap disk 24 and spring washer 25 extends through.
  • this embodiment there is only a very small number of components is required because it is integral with the cover part 15 both the mating contact 37 and its nose 38 through Deep drawing are formed. Assembling this switch 10 thereby becomes clear in the manner described above simplified.
  • the spring washer 25 can be if the bimetallic snap disk 24 itself as electrically conductive spring part is formed. Furthermore, the spring washer 25 also as a plate spring or as a spiral spring be formed. In particular training as a spiral spring is made possible here by the fact that at the first counter contact trained projection can serve as a guide and thus a avoids lateral deflection of the coil spring.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Slide Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (10)

  1. Interrupteur comportant un mécanisme de commutation (12) qui dépend de la température, un boítier (11) qui loge le mécanisme de commutation (12) et qui comporte une partie inférieure (4) et une partie formant couvercle (15) qui ferme la première, ainsi qu'un premier contre-contact (21, 33, 37) prévu à l'intérieur de la partie formant couvercle (4) et un deuxième contre-contact (21, 33, 37 ; 30) prévu à l'intérieur de la partie inférieure (14), le mécanisme de commutation (12) comprenant un élément élastique (24, 25) électriquement conducteur qui, dans l'une de ses positions de commutation, est en contact avec le premier comme avec le deuxième contre-contact (21, 33, 37 ; 30),
    caractérisé en ce que sur le premier contre-contact (21, 33, 37) est prévue une saillie (23, 34, 35, 38) dirigée vers l'intérieur du boítier et qui pénètre, au moins dans une position de commutation, dans une ouverture (26, 27) prévue dans l'élément élastique (24, 25).
  2. Interrupteur selon la revendication 1, caractérisé en ce que la saillie (23, 34, 37) est réalisée en une matière électriquement conductrice.
  3. Interrupteur selon la revendication 1, caractérisé en ce que la saillie (35) est réalisée en une matière électriquement isolante.
  4. Interrupteur selon la revendication 3, caractérisé en ce que la saillie s'étend en tant que broche de guidage (35) jusqu'au fond (29) de la partie inférieure (14).
  5. Interrupteur selon l'une des revendications 1 à 4, caractérisé en ce que l'élément élastique (24, 25) est maintenu imperdable sur la saillie (23).
  6. Interrupteur selon la revendication 5, caractérisé en ce que la saillie (23) présente une tête (32) surépaissie sur laquelle l'élément élastique (24? 25) est enfilé et s'y accroche.
  7. Interrupteur selon l'une des revendications 1 à 6, caractérisé en ce que l'élément élastique est un disque bimétallique à déclic (24) précontraint.
  8. Interrupteur selon l'une des revendications 1 à 6, caractérisé en ce qu'à l'élément élastique (25) est associé un disque bimétallique à déclic (24) qui est disposé, par son ouverture (26), sur la saillie (23, 34, 35, 38).
  9. Interrupteur selon l'une des revendications 1 à 8, caractérisé en ce que la partie formant couvercle (4) est réalisée en une matière électriquement conductrice et le premier contre-contact (33, 37) est obtenu par emboutissage profond dans cette matière.
  10. Interrupteur selon la revendication 9, caractérisé en ce que la saillie (38) est obtenue aussi par emboutissage profond dans la matière.
EP96114995A 1995-12-09 1996-09-19 Interrupteur avec un mécanisme de commutation sensible à la température Expired - Lifetime EP0778596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19545997 1995-12-09
DE19545997A DE19545997C2 (de) 1995-12-09 1995-12-09 Schalter mit einem temperaturabhängigen Schaltwerk

Publications (3)

Publication Number Publication Date
EP0778596A2 EP0778596A2 (fr) 1997-06-11
EP0778596A3 EP0778596A3 (fr) 1998-06-03
EP0778596B1 true EP0778596B1 (fr) 2001-12-12

Family

ID=7779664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114995A Expired - Lifetime EP0778596B1 (fr) 1995-12-09 1996-09-19 Interrupteur avec un mécanisme de commutation sensible à la température

Country Status (5)

Country Link
US (1) US5828286A (fr)
EP (1) EP0778596B1 (fr)
AT (1) ATE210888T1 (fr)
DE (2) DE19545997C2 (fr)
ES (1) ES2169781T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59803291D1 (de) * 1997-07-02 2002-04-11 Tyco Electronics Logistics Ag Thermosicherung zur fixierung auf einem schaltungssubstrat
US20070173423A1 (en) * 2004-06-29 2007-07-26 Vermeer Robert C Method and device for fragrancing and fabric treatment in a clothes dryer
JP2006092825A (ja) * 2004-09-22 2006-04-06 Fuji Denshi Kogyo Kk 温度スイッチと温度スイッチの組立方法
CN100446148C (zh) * 2005-11-07 2008-12-24 徐佳义 手动复位温控器
US7626484B2 (en) * 2007-09-26 2009-12-01 Honeywell International Inc. Disc seat for thermal switch
DE102009030353B3 (de) * 2009-06-22 2010-12-02 Hofsaess, Marcel P. Kappe für einen temperaturabhängigen Schalter sowie Verfahren zur Fertigung eines temperaturabhängigen Schalters
DE102009039948A1 (de) * 2009-08-27 2011-03-03 Hofsaess, Marcel P. Temperaturabhängiger Schalter
US20130021132A1 (en) * 2011-07-21 2013-01-24 Honeywell International Inc. Permanent one-shot thermostat
DE102011119632B3 (de) * 2011-11-22 2013-04-11 Marcel P. HOFSAESS Temperaturabhängiges Schaltwerk
DE102011119637B4 (de) * 2011-11-22 2013-06-06 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit einem temperaturabhängigen Schaltwerk sowie Verfahren zum Herstellen eines solchen Schalters
DE102011122890A1 (de) 2011-11-22 2013-05-23 Marcel P. HOFSAESS Temperaturabhängiges Schaltwerk
DE102013102089B4 (de) * 2013-03-04 2015-02-12 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit Isolierscheibe
DE102019128367B4 (de) * 2019-10-21 2021-06-10 Marcel P. HOFSAESS Temperaturabhängiger schalter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687664A (en) * 1926-06-23 1928-10-16 Westinghouse Electric & Mfg Co Thermostat
US2707738A (en) * 1952-11-14 1955-05-03 Siemens Ag Midget thermostatic switch
US2785252A (en) * 1955-04-04 1957-03-12 Edward L Parr Thermostatic switch for electric heaters
US2811611A (en) * 1956-04-17 1957-10-29 Odenwald Alfred Small-type thermostat for preventing overheating in electrical apparatus
US3213250A (en) * 1962-11-30 1965-10-19 Texas Instruments Inc Miniature snap acting thermostatic switch
CH400297A (de) * 1963-03-22 1965-10-15 Huber & Cie Ag J Elektrischer, temperaturabhängiger Kleinstschalter
DE2143652B2 (de) * 1971-09-01 1975-04-24 Micro-Therm Gmbh, 7530 Pforzheim Thermoschalter
DE2917482C2 (de) * 1979-04-30 1982-11-25 Peter 7530 Pforzheim Hofsäss Übertemperaturschutzschalter
DE3122899C2 (de) * 1981-06-10 1984-10-11 Peter 7530 Pforzheim Hofsäss Temperaturschalter
DE3710672C2 (de) * 1987-03-31 1997-05-15 Hofsaes Geb Zeitz Ulrika Temperaturwächter mit einem Gehäuse
DE4337141C2 (de) * 1993-10-30 1996-06-05 Hofsaes Geb Zeitz Ulrika Temperaturabhängiger Schalter

Also Published As

Publication number Publication date
EP0778596A3 (fr) 1998-06-03
EP0778596A2 (fr) 1997-06-11
ATE210888T1 (de) 2001-12-15
US5828286A (en) 1998-10-27
DE19545997C2 (de) 1997-12-18
ES2169781T3 (es) 2002-07-16
DE59608437D1 (de) 2002-01-24
DE19545997A1 (de) 1997-06-12

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