EP0436815A1 - Verfahren zur Montage eines Thermostaten - Google Patents

Verfahren zur Montage eines Thermostaten Download PDF

Info

Publication number
EP0436815A1
EP0436815A1 EP90122455A EP90122455A EP0436815A1 EP 0436815 A1 EP0436815 A1 EP 0436815A1 EP 90122455 A EP90122455 A EP 90122455A EP 90122455 A EP90122455 A EP 90122455A EP 0436815 A1 EP0436815 A1 EP 0436815A1
Authority
EP
European Patent Office
Prior art keywords
bimetal
snap spring
thermostat
gauge
housing
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Withdrawn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
EP90122455A
Other languages
German (de)
English (en)
French (fr)
Inventor
B. Dr. Trebitz
D. Burger
Augustin Auria Perez
J. Sanjuan
Francesc Carreras Devesa
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Publication of EP0436815A1 publication Critical patent/EP0436815A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/04—Bases; Housings; Mountings

Definitions

  • the invention relates to a method for mounting a thermostat, which is used to regulate the temperature of an electrically heated domestic appliance, in particular an iron.
  • the thermostat consists of a snap spring controlled by a bimetal, the movement of which switches the electrical power supply to the heating device on and off, and an adjusting device that changes the switching point of the snap spring, the bimetal and the snap spring having a fixed spatial association with one another after assembly and the spatial assignment of the bimetal to the snap spring comes about in that both the bimetal and the snap spring are attached to the household appliance at different fastening points.
  • the thermostat can be adjusted.
  • the soleplate of the iron is first heated to a precisely predetermined temperature, so that the snap point of the snap spring can then be adapted to the deformation of the bimetal depending on the rotational position of the adjusting device.
  • the hysteresis of the thermostat can be kept within relatively small limits due to the good thermal contact of the bimetal to the soleplate, but this adjustment process only on the soleplate is time-consuming and complex. A pre-adjustment outside the soleplate of the iron is not possible with this thermostat, since the bimetal has no fixed assignment to the snap spring.
  • thermostat is also known, on which a bridge is formed on the housing, which is used to fasten the bimetal and at the same time its spatial assignment to the snap spring.
  • This thermostat can be pre-adjusted before installation in a household appliance, so that it then only has to be fastened in the household appliance. Subsequent final adjustment in the household appliance is then only required with little expenditure of time.
  • a mounting device for a switch is known from DD-236 204 A1, in which only individual parts of a switch are inserted into the mounting device, which are then held against one another until they are finally connected to one another by fastening means. Due to the fact that the individual parts of the switch abut against each other at the stop, there are no spatial assignment problems. Consequently, this assembly device has only the purpose of preventing the various individual parts from "falling apart" for the time the switch is being assembled.
  • the object of the invention is therefore to provide a method for mounting a bimetal-controlled thermostat in a household appliance, by means of which the thermostat can be simplified and at the same time the sensitivity of the thermostat is considerably improved, i. that is, the temperature control of the household appliance should be improved by the thermostat.
  • This object is achieved in that the spatial assignment of the bimetal to the snap spring is carried out by mounting both parts in the grooves of a gauge, that the unit of bimetal, gauge and snap spring is then placed on the attachment points and before they are installed on the household appliance only the bimetal and the snap spring are attached to the fastening points, that the gauge can then be separated from the bimetal and the snap spring again by moving them along their grooves, without changing the spatial assignment of the bimetal and the snap spring.
  • the teaching connecting the housing of the snap spring and the bimetal makes it possible to place the thermostat in front of it To be able to pre-adjust installation in a household appliance, although after its installation in a household appliance there is no longer any mechanical fastening of the bimetal to the housing of the thermostat.
  • an exact temperature-maintaining heat storage unit can be used, at the temperature of which the thermostat can be pre-adjusted. Another advantage is that after installing the thermostat in a household appliance, the teaching can be removed from it again and used as an assembly aid for many other thermostats.
  • the object of the invention is also applicable to household appliances in need of repair, so that a workshop does not require complex adjustment means, which also reduces the repair costs.
  • the teaching used to carry out the method consists of a bridge which is connected at one leg to the housing of the thermostat which carries the snap spring and which is connected at its other leg to the bimetal.
  • the teaching can be produced particularly easily if the teaching is essentially Z-shaped and if the legs which run essentially parallel to one another serve to accommodate the bimetal and the housing.
  • the teaching can be passed unhindered past the attachment point of the thermostat, it is advantageous that the leg receiving the bimetal has a central recess running along the bimetal, the width and height of which is dimensioned such that after mounting the bimetal on the household appliance, the lower leg of the gauge can be removed freely from the attachment point of the bimetal.
  • the method according to the invention is extremely simple to use, in particular in the case of irons, since only the temperature control of the thermostat on the soleplate of the iron has to be checked. A possible readjustment of the thermostat, which is only necessary in the rarest cases, was then carried out in the shortest possible time.
  • the grooves have stops for the housing and the bimetal so that the bimetal and the snap spring with the switch always have the same position in relation to the gauge. So that the thermostat is fixed to its mounting in a household appliance with the teaching, it is proposed that a resilient latching device cooperating with the teaching is provided on the housing. After installing the thermostat in a household appliance, only a slight pulling force has to be applied, to separate the teaching from the case and the bimental.
  • the bimetal does not necessarily require a locking device that interacts with the teaching, since the transmission pin connecting the bimetal with the snap spring keeps the bimetal stationary in the groove of the teaching and on the housing due to its centering on these two parts.
  • the thermostat 1 has not yet been assembled.
  • the thermostat 1 consists of a part of the housing serving metal strip 2 to which the adjusting device 4 is attached. 1, a transmission member 5 made of porcelain and a disk-shaped bimetal 6 can be seen.
  • the snap spring arrangement 7 consists of three superimposed process rings 8, 9 and 10 formed as an insulating material body, which are penetrated by a hollow rivet penetrating the porcelain rings 8, 9, 10 11 are firmly connected.
  • a first contact tongue 12 with an overlying contact tab 13 is firmly clamped between the porcelain rings 8 and 9. Between the porcelain rings 9 and 10, a second contact tongue 14 is firmly clamped with a second contact tab 15 lying below the contact tongue 14.
  • the first contact tongue 12 consists essentially of two parallel and horizontally extending legs 16, 17, of which the upper leg 16 is clamped between the porcelain rings 8 and 9.
  • the two legs 16, 17 of the first contact tongue 12 are firmly connected to one another at their free end 18, which can be done, for example, by spot welding.
  • an electrical contact point 19 is attached, which is in the position of the snap spring arrangement 7 shown in FIG. 1 in contact with a second contact point 20, which is attached to the second contact tongue 14.
  • a spring tongue 21 is stamped with a pre-tension, which is supported with its free end with pre-tension on the first contact tongue 12, while the other end is part of the leg 17.
  • the spring tongue 21 forms with the first contact tongue 12 actual snap spring arrangement for the two electrical contact points 19, 20.
  • the adjusting device 4 is fastened to the sheet metal tongue 2, which runs essentially parallel to the snap spring 3 and the second contact tongue 14, for example by caulking.
  • the metal strip 2 is firmly clamped on the top between the porcelain ring 8 and the hollow rivet 11.
  • the threaded sleeve 23 carrying the adjusting device 4 is fastened, in which an adjusting screw 24 is rotatably and thus vertically adjustable.
  • the outer surface of the adjusting screw 24 has according to FIGS. 1 to 5 a flattening 25, which is used for the rotationally fixed entrainment of the actuator 26 adjusting the temperature of the thermostat 1.
  • the actuating member 26 has a stop 25 which extends radially away from it and which abuts against a sheet metal nose 28 which extends upwards from the metal strip 2 in accordance with FIG. 1.
  • the stop 27 strikes the sheet metal nose 28 from the other side.
  • the adjustment screw can thus be turned slightly less than 360 degrees.
  • a threaded hole (not shown) is also formed in the adjusting screw 24, in which an adjusting screw 29 is used, which abuts the actuating pin 22 at the upper end.
  • the adjusting screw 24, which is the nut with respect to the adjusting screw 29, but which in turn takes on the function of a screw relative to the threaded sleeve 23, is rotated, the adjusting screw 29 rotates, since after adjustment of the thermostat it is connected to the adjusting screw in a rotationally fixed manner, in the same sense with the adjusting screw 24, so that the adjusting screw 29 then moves up or down in exactly the same way as the actuating pin 22.
  • this has a slot 30 at its upper end for the attack of a screwdriver.
  • a bore 31 is formed at the free end 18.
  • These bores 31 and 32 serve to receive and center the transmission member 5, as can be clearly seen in FIGS. 2, 4 and 5 emerges.
  • tips 33, 34 of conical design engage in the bores 31, 32 on the transmission member 5.
  • a further bore 35 is provided which, as can be seen from FIG. 4, for fastening the bimetal 6 on a pin 36 protruding upwards on an iron soleplate (not shown) is attached in a heat-conducting manner by means of a screw 37.
  • the leg 40 has a central recess 46 which is dimensioned at least so large that the screw 37 can pass through this recess unhindered when pulling out the gauge 38. 2 and 3, this recess 46 extends to the top of the leg 40 so that the screw 37 is inserted from above and can penetrate the leg 40.
  • the leg 40 is therefore on the one hand essentially from two parallel leg sections 47, 48 in which the grooves 43 are formed and on the other hand from a bridge 49 connecting the two leg sections 47, 48, which simultaneously forms the stop 44 for the bimetal 6.
  • the snap spring assembly 7 and the bimetal 6 is attached in the gauge 38, so that the transmission member 8 assumes a vertical position.
  • the gauge 38 is essentially Z-shaped, with its free legs 39, 40 running essentially parallel to the metal strip 2.
  • the legs 39, 40 are connected to one another via a bridge 41.
  • FIGS. 2 and 3 are also formed in the upper leg 39 of the gauge 38 parallel to one another and horizontally extending grooves 42, the free end of the metal strip 2 being inserted in the upper grooves 42.
  • a stop 45 is also formed on the upper leg 39, which stops when the gauge 38 is in the correct position on the sheet metal nose 28 (see FIGS. 2 and 3).
  • the procedure for assembling the in Figs. 1 to 5 shown thermostats proceeds as follows: After the snap spring arrangement 7 is assembled in accordance with FIG. 1, the bimetal 6 is first inserted into the groove 43 until it strikes the rear wall 44 (FIG. 2). Then the snap spring arrangement 7 is likewise inserted into the groove 42 from left to right via its metal strip 2 until the stop 45 strikes the sheet metal nose 28. The transmission member 5 is then clamped between the bimetal 6 and the snap spring 3 in the bores 31, 32. The transmission member 5 therefore remains in the position shown in FIG. 2, since the snap spring 3 presses the transmission member 5 against the bimetal 6 with prestress.
  • the thermostat 1 is now pre-assembled so that it can be pre-adjusted. After the bimetal has been brought to a predetermined temperature, the adjusting screw 29 is turned until the snap spring 3 reaches its snap point, i. that is, has just reached the point where the two electrical contact points 19, 20 close or just separate. The thermostat 1 is now adjusted and the adjusting screw 29 can be connected to the adjusting screw 24 in a rotationally fixed manner, for example by means of a lacquer.
  • the thermostat 1 After adjusting the thermostat 1, it is mounted together with the gauge 38 in an iron soleplate (not shown).
  • the bore 35 is centered on the pin 36 of the soleplate of the iron so that the screw 37 can be screwed into a threaded hole (not shown) formed in the pin 36 from above.
  • the hollow rivet 11 is centered on a second pin 50 of the soleplate of the iron so that a further screw 51 can penetrate the bore 52 formed by the hollow rivet 11 and can engage in a threaded hole (not shown) formed in the pin 50.
  • the screws 37, 51 are screwed so tightly to the pins 36, 50 that, on the one hand, the bimetal 6 and, on the other hand, the snap spring arrangement 7 are firmly screwed to the soleplate of the iron (FIG. 4).
  • the gauge 38 according to FIG. 4 is now pulled horizontally to the right out of the bimetal 6 and the metal strip 2 so that it can be removed from the soleplate of the iron.
  • the arrangement shown in FIG. 5 then results without the assignment of the bimetal 6 having changed in relation to the snap spring arrangement 7.
  • the thermostat 1 is now ready for use on the soleplate. Then only the contact lugs 13, 15 have to be connected to an electrical energy source. It takes place then check the thermostat 1 again when the soleplate is heated up.
  • Thermostat 1 works as follows:
  • the pin 30 also heats up, so that the heat occurring at the soleplate is introduced into the bimetal 6. 5 deforms such that its free end moves upward.
  • the transmission member 5 and the leg 16 of the snap spring 3 are also raised upwards. If the leg 16 has reached its snap point in accordance with the position of the adjusting device 4, the electrical contact point 19 jumps up and detaches from the second electrical contact point 20.
  • the circuit to the heating device (not shown) of the soleplate of the iron is now interrupted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Thermally Actuated Switches (AREA)
EP90122455A 1989-12-29 1990-11-26 Verfahren zur Montage eines Thermostaten Withdrawn EP0436815A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3943251 1989-12-29
DE19893943251 DE3943251A1 (de) 1989-12-29 1989-12-29 Verfahren zur montage eines thermostaten

Publications (1)

Publication Number Publication Date
EP0436815A1 true EP0436815A1 (de) 1991-07-17

Family

ID=6396580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122455A Withdrawn EP0436815A1 (de) 1989-12-29 1990-11-26 Verfahren zur Montage eines Thermostaten

Country Status (2)

Country Link
EP (1) EP0436815A1 (enrdf_load_stackoverflow)
DE (1) DE3943251A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109216110A (zh) * 2018-10-25 2019-01-15 厦门升明电子有限公司 一种温控器保险装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1022926Y (es) * 1992-11-12 1994-04-16 Braun Ag Termostato para una superficie de calefaccion, de preferencia una suela de plancha.
CN107904906A (zh) * 2017-12-27 2018-04-13 浙江家泰电器制造有限公司 电熨斗温控器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1061182A (fr) * 1951-08-03 1954-04-09 Thomson Houston Comp Francaise Perfectionnements aux fers à repasser électriques à réglage thermostatique
FR2610764A1 (fr) * 1987-02-16 1988-08-12 Vebe Elettromecc Ensemble forme d'une bilame et d'un support associe, pour thermostat du type a ouverture rapide

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855138C (de) * 1949-07-14 1952-11-10 Rowenta Metallwarenfabrik G M Temperaturregler fuer elektrisch beheizte Geraete
ES267845A1 (es) * 1960-06-07 1961-09-01 Hoover Ltd Perfeccionamientos en interruptores de acciën rapida
IT206675Z2 (it) * 1985-02-04 1987-10-01 Vebe Elettromecc Regolazione termostato bimetallico a doppia
DD236204A1 (de) * 1985-04-08 1986-05-28 Elektrogeraete Ingbuero Veb Montagevorrichtung fuer einen schalter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1061182A (fr) * 1951-08-03 1954-04-09 Thomson Houston Comp Francaise Perfectionnements aux fers à repasser électriques à réglage thermostatique
FR2610764A1 (fr) * 1987-02-16 1988-08-12 Vebe Elettromecc Ensemble forme d'une bilame et d'un support associe, pour thermostat du type a ouverture rapide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109216110A (zh) * 2018-10-25 2019-01-15 厦门升明电子有限公司 一种温控器保险装置

Also Published As

Publication number Publication date
DE3943251A1 (de) 1991-07-11
DE3943251C2 (enrdf_load_stackoverflow) 1991-11-28

Similar Documents

Publication Publication Date Title
EP0141923B1 (de) Temperaturbegrenzer für eine Glaskeramikkocheinheit
EP0977223A2 (de) Elektrisches Schaltgerät
EP0778596B1 (de) Schalter mit einem temperaturabhängigen Schaltwerk
DE892468C (de) Elektrischer Stromunterbrecher
DE3233909A1 (de) Schnappvorrichtung, insbesondere elektrischer schnappschalter
DE3333645A1 (de) Temperaturbegrenzer fuer eine glaskeramikkocheinheit
DE112019001066T5 (de) Thermostat unter Verwendung von Doppeltemperatur-Steuerkreisen
EP0436815A1 (de) Verfahren zur Montage eines Thermostaten
DE2414812C3 (de) Ausdehnungsdose
DE69108625T2 (de) Elektrisches Dampfbügeleisen mit einer Platte zum Tragen der Regulierorgane.
DE3508585A1 (de) Doppeltemperaturthermostat
EP0856692A1 (de) Vorrichtung zur Verstellung des Stössels eines Ventils
DE1914687C3 (de) Schutzschalter
DE2724527A1 (de) Temperaturregler
DE2838703C2 (de) Thermostatischer Regler
EP0057460B1 (de) Regeleinrichtung für die Temperatur elektrisch beheizter Geräte
DE1055649B (de) Temperaturabhaengiger elektrischer Schalter mit Rueckstelleinrichtung
DE1765713A1 (de) Thermoschalter
DE4334526A1 (de) Thermostat für eine Heizfläche, vorzugsweise eine Bügeleisensohle
DE2219451B2 (de) Raumtemperaturregler
DE1565512B2 (enrdf_load_stackoverflow)
DE69306510T2 (de) Vorrichtung zum Steuern von mindestens zwei Statusanzeigenden Signalleuchten
EP2880670B1 (de) Temperaturschalter sowie verfahren zur justierung eines temperaturschalters
DE2625266A1 (de) Temperaturempfindliche schalt- oder regelvorrichtung
DE69832136T2 (de) Steuerungsvorrichtung für ein thermostat

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR IT LI

17P Request for examination filed

Effective date: 19910801

17Q First examination report despatched

Effective date: 19930921

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940124