EP0428926B1 - Bügeleisen mit einer elektrisch beheizten Bügeleisensohle - Google Patents

Bügeleisen mit einer elektrisch beheizten Bügeleisensohle Download PDF

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Publication number
EP0428926B1
EP0428926B1 EP90121065A EP90121065A EP0428926B1 EP 0428926 B1 EP0428926 B1 EP 0428926B1 EP 90121065 A EP90121065 A EP 90121065A EP 90121065 A EP90121065 A EP 90121065A EP 0428926 B1 EP0428926 B1 EP 0428926B1
Authority
EP
European Patent Office
Prior art keywords
thermostat
green
closed
open
control member
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
EP90121065A
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German (de)
English (en)
French (fr)
Other versions
EP0428926A2 (de
EP0428926A3 (en
Inventor
Augustin Auria Pérez
Egon Gahler
Brigitte Harttmann
Bernd Lindstaedt
Lothar PÄCHER
Miguel Rodriguez
Otto Schweingruber
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
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Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP0428926A2 publication Critical patent/EP0428926A2/de
Publication of EP0428926A3 publication Critical patent/EP0428926A3/de
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Publication of EP0428926B1 publication Critical patent/EP0428926B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to an iron according to the preamble of claim 1.
  • Irons with a display element reflecting a certain operating state are already known in manifold forms.
  • an iron is described in US Pat. No. 2,778,913, in which a lamp is arranged in the rear area of the handle, which lights up whenever the temperature of the soleplate of the iron, which is regulated by a thermostat in good thermal contact with it, changes the temperature range indicated by an adjusting element. As long as the temperature of the soleplate is below the temperature range indicated by the adjusting element, the lamp remains off. With this iron, it is considered less advantageous that its user can only see whether the temperature of the soleplate is too low.
  • the lamp burns for a longer period of time, during which the temperature of the soleplate is the same as the temperature set on the adjusting member does not match, but is too high. The consequence of this may be that the sensitive silk fabric is scorched if the iron soles are still too hot.
  • Another iron is known from DE-A1 35 12 906 in which the temperature of its soleplate is controlled not by a thermostat but by a thermistor and which already has three display elements in the form of light sources. It shows a first display element designed as a neon lamp indicates that the iron is connected to its electrical energy source. When it lights up, a second display element in the form of a green light-emitting diode indicates that the soleplate of the iron has now actually reached the target temperature specified by the adjusting element. And a third, red light-emitting diode ultimately indicates that the target temperature specified by the adjusting element has not yet been reached by the soleplate, that is to say the iron is not yet ready for use, but is still being heated up. Despite a complex and expensive sensing circuit, this iron also does not show when the temperature set on the soleplate of the iron is finally the same after the temperature has been turned down. Here too, sensitive substances can be burned.
  • Another iron with an electrically heated soleplate the temperature of which is determined by a triac by regulating the voltage supply to a heating device as a function of the voltage emitted by an electrical temperature regulator, is known from EP-A1 0 024 613.
  • this iron has three differently colored light-emitting diodes. The yellow LED lights up when the soleplate temperature is below the temperature set on the control element. The red LED lights up when the soleplate temperature is above the set temperature selected on the adjustment element and the green LED lights up when the iron soleplate temperature matches the set temperature selected on the adjustment element.
  • the individual light-emitting diodes are controlled by means of an electrical circuit, the essential parts of which are a temperature-dependent PTC or NTC resistor and two comparators.
  • the principle of operation of this circuit is that one input of the comparators is supplied by a constant voltage source, while the other of the two inputs is at a voltage level which depends on the temperature of the PTC or NTC resistor.
  • the use of a constant voltage source, two comparators and a PTC or NTC resistor creates a circuit arrangement for displaying various temperature states on the soleplate, which is complex and expensive.
  • Another disadvantage is that the control circuit available here must be compared with the actual switching points of the thermostat, which is also expensive and complex.
  • a cordless iron which can be placed on a base connected to the electrical network for the purpose of heating its soleplate equipped with an electric heating element.
  • the temperature of the heated soleplate is regulated when the iron is placed on the base by a thermistor embedded in the soleplate.
  • the latter acts on the tilting frequency of an astable multivibrator, which in turn is the driver of an infrared light-emitting diode, the radiation of which in turn strikes a phototransistor, which in turn feeds its temperature-dependent signal to a microprocessor, which ultimately controls the power supply to the electric heating element so that the temperature set by the user on the soleplate is maintained.
  • This complex and therefore relatively expensive device offers a very precise and low control vibrations regulation of the temperature of the soleplate.
  • the user is identified by the same display element due to the fact that the two operating states "temperature of the soleplate above or below the set temperature" cannot distinguish them. After turning the adjusting member, he often does not know whether the soleplate of the iron is still too hot or too cold, although he can only use the iron in the second case without any risk to the items being ironed.
  • Another disadvantage of the iron known from GB 2 201 814 A is that the control of the voltage supply for the heating element via two transistors and a relay already represents a certain amount of effort, but this is due to the complicated structure of the thermistor, astable multivibrator , Infrared light-emitting diode, phototransistor and microprocessor is surpassed.
  • an electrically operated iron is known from the Swiss patent 38 21 03, in which the temperature of the soleplate of the iron is in turn controlled by a temperature controller.
  • a bimetal of the temperature controller which is deformable as a function of the temperature is mechanically connected to a movable window which serves as a display device and which, due to its changeable position, indicates the temperature present on the soleplate of the iron.
  • An adjusting lever arranged on the adjusting wheel for preselecting the temperature serves to ensure that when the window is opposite or aligned with the adjusting lever, the preselected temperature corresponds to the actual temperature of the soleplate.
  • an operator can only determine how the setpoint temperature relates to the actual temperature of the soleplate of the iron by means of a comparison, which is sometimes laborious to carry out, between the position of the window and the position of the adjusting lever.
  • the object of the invention is therefore to provide an iron with an electrically heated soleplate, by which the above disadvantages are avoided and by which an operator is provided with extremely simple and inexpensive means as to whether the temperature of the soleplate in relation to the position of the adjusting element is OK.
  • the thermostat which is already used in irons and regulates the temperature of the soleplate, together with position monitoring of the adjusting element and information about the actual state of the thermostat before the adjusting element is rotated, can also be used as a temperature indicating element.
  • This arrangement according to the invention although no additional temperature sensor is required, nevertheless provides information as to whether the temperature of the soleplate of the iron is too low, too high or corresponding to the temperature displayed on the adjusting element.
  • the temperature of the soleplate of the iron is in the working range of the thermostat, whereby the working range of the thermostat is to be understood as the control range in which the thermostat only switches the heating on and off without adjusting the adjusting element to keep the soleplate temperature constant.
  • a second signal is generated, that the first and second signals are fed to a first and second input of a microcontroller that the thermostat in its two Operating states generates a third and fourth signal, which are fed to a third input of the microcontroller, that the microcontroller has a number of outputs corresponding to the number of display elements, which control the display states of the display elements and that the microcontroller from the at its three inputs and from the before turning the adjusting element at its outputs signals determined after turning the adjusting element at its outputs.
  • the idea of the invention can already be realized in an iron in which there are only two display elements, the first display element being activated when the temperature of the soleplate is in the working range of the thermostat and the second display element being activated when one corresponding to the adjusting element is displayed There is a higher (first variant) or lower (second variant) temperature on the soleplate.
  • the state of the thermostat that has set itself when the adjusting element is released and consequently the center contact has reached its center position also determines which display element is activated after rotation.
  • the signals applied to the inputs and outputs of the microcontroller are interrogated at intervals of a few 10 milliseconds, for example 20 milliseconds.
  • a third display element is present. Activation of the first display element therefore indicates that the temperature is in the set working range of the thermostat. If the temperature of the soleplate is below the temperature of the set working range of the thermostat, If the third display element is activated and the temperature of the soleplate is above the temperature of the set working range of the thermostat, the second display element is activated. This display provides a user with all the information necessary for temperature-appropriate ironing.
  • a particularly simple and clearly recognizable display of the display elements is achieved in that they emit light and that the first display element is designed as a green, the second as a red and the third as a yellow light emitting diode.
  • the first display element is designed as a green
  • the second as a red
  • the third as a yellow light emitting diode.
  • the microcontroller should always light up the third or yellow display element if the thermostat is closed at this time. However, if the thermostat is not closed at this point, the second or red display element should light up. Only when the thermostat opens or closes the next time is it certain that it is now working in its work area, so that the first or green display element lights up. This boundary condition means that it is never possible for an operator to iron with a temperature that differs from the target temperature of the adjusting element. In all other states, the iron works according to the truth table given in claim 6.
  • the microcontroller should be designed so that when the second or red display element lights up after turning the adjusting element, after the first restoration of the power supply by the thermostat this goes out and the first or green display element lights up.
  • This safety condition ensures that the iron after turning the Adjustment element and lighting up of the red display element after the power supply has been restored can never light up the second or yellow display element. This would indicate to a user a false statement about the soleplate temperature, namely that it was too cold; in reality it is ready to iron.
  • the microcontroller should be designed so that when the third or yellow display element lights up after rotation of the adjusting element, after the first interruption of the voltage supply by the thermostat, this goes out and the first or green display element lights up instead. As soon as the red or yellow light comes on after turning the adjustment element from the working area of the thermostat, only the green display element should light up after the next cycle of the thermostat.
  • This additional function also clearly clarifies the state which, after repeated rotation of the adjusting member, then results in the truth table specified in claim 6. So if the twist on the adjusting member is so small that the green display element continues to light up even after adjusting the adjusting member, the twisting has only extended in the working range of the thermostat.
  • the adjusting element contains a switch unit which detects the direction of rotation, that the switch unit consists of two switches attached to the iron and of a slip clutch arranged between the adjusting element and an actuating element, that the actuator actuates one of the two switches upon rotation depending on the direction of rotation of the adjusting member, and that the actuating member is in the rest position of the adjusting member by a reset arrangement formed in the switch unit is returned to its original position.
  • the friction torque on the slip clutch must therefore be slightly greater than the force required to actuate the switch in order to operate the switch unit properly.
  • the slip clutch advantageously consists of a circular disk connected to the adjusting member in a rotationally fixed manner, on the circumferential surface of which the actuating member designed as a friction ring bears with prestress.
  • the actuator rotates with it until it has brought one of the two switches into its on position.
  • the actuating element With further rotation of the adjusting element and the thermostat, the actuating element now holds the already actuated switch in its switched-on position, while the circular disk with the adjusting element rotates further with the thermostat relative to the actuating element, producing a frictional force.
  • This particularly simple embodiment of the slip clutch enables parts made of plastic that can be easily inserted into one another in such a way that they remain connected to one another by latching elements.
  • the direction of rotation switch is particularly simple in its construction and is easy to manufacture if each switch consists of two resilient contact tongues attached to the housing, which are short-circuited against the spring force only by applying a force to the adjusting member and thus also to the actuating member.
  • the basic circuit shown in FIG. 1 for the electronic control of the display elements in an iron which provide information about the temperature of an iron soleplate consists of a connection 1 which can be connected to an electrical energy source and which is connected to a circuit 2 of the iron with electrical energy.
  • the circuit 2 according to FIGS. 1 and 2 consists of a fixed on an iron soleplate 3, as an electrical resistor trained heating element 4 and a thermostat 5 controlling the temperature of the soleplate 3, which are connected in series with one another.
  • the thermostat 5 is attached to the soleplate 3 for optimal heat coupling.
  • FIG. 1 the thermostat 5 is shown in its open position, in contrast to the representation in Fig. 2.
  • a power line 7 leads from the connecting line 6 running between the heating element 4 and the thermostat 5 to a microcontroller 8.
  • the power line 7 represents the third input on the microcontroller 8 and conducts the microcontroller 8 the pulses emanating from the thermostat 5 (third and fourth signals ), which inform the microcontroller 8 about the operating state of the thermostat 5, that is to say whether it is switched on or off. If the thermostat 5 is switched on, the power line 7 is live, if it is switched off, the power line 7 is voltage-free.
  • a direction of rotation switch 11 is shown in FIG. 1 with its left contact 13 indicating the left direction of rotation 12 and its right contact 14 indicating the right direction of rotation 12 '.
  • the center contact 15 corresponding to the two contacts 13, 14 is connected via its fulcrum 16 to the adjusting shaft 17 which controls the thermostat 5 and thus adjusts the temperature of the soleplate 3, at the upper free end 18 of which the adjusting member 19 in the form of a circular-shaped temperature selector knob is fastened in a rotationally fixed manner is.
  • the two contacts 13, 14 are also connected to the microcontroller 8 via the electrical lines 9, 10, with a first signal when the center contact 15 is short-circuited with the left contact 13 and a second signal when the center contact 15 is short-circuited with the right contact 14 respective line 9 or 10 is supplied to the microcontroller 8.
  • the center contact 15 is supplied with electrical energy via line 93.
  • the microcontroller 8 is supplied with electrical energy via the lines 26, 27.
  • the thermostat 5 is fastened on a base 28 which extends upward from the iron soleplate 3 by means of a screw 29.
  • the thermostat 5 consists of three porcelain rings 30, 31 and 32 placed on top of one another and formed as an insulating material body, which are firmly connected to one another by a hollow rivet 33 penetrating the porcelain rings 30 to 32.
  • a first contact tongue 34 and an overlying contact tab 53 are clamped between the process rings 30 and 31, and a second contact tab 35 and a second contact tab 55 are clamped between the porcelain rings 31 and 32.
  • the contacts 36, 37 formed on the contact tongues 34, 35 conduct the current over them when they come into contact, as shown in FIG. 2.
  • the lower conclusion of the hollow rivet 33 according to FIG. 2 lies on the top of a cover 38, which in turn is supported on the underside of the base 28 and which forms a steam chamber 39 with the soleplate 3.
  • the hollow rivet 33 is insulated from the current-carrying elements 34, 35, 53, 55.
  • a metal bridge 40 is clamped between the first porcelain ring 30 and the screw 29, which, according to FIG. 2, initially runs horizontally to the left and then to a heat-conducting web 41 protruding from the cover 38 and integrally connected to the soleplate 3 and over it another screw 42 is firmly connected.
  • a bimetallic strip 44 is fastened to the underside, for example by welding, due to the pretension the screw 42 is pressed firmly against the heat conducting web 41 so that there is an optimal heat coupling via the heat conducting web 41 to the soleplate 3.
  • the bimetallic strip 44 extends below the first and second contact tongues 34, 35 and, at room temperature, runs essentially parallel to the sliding surface 45 of the iron soleplate 3 and is directed at the process rings 30, 31 and 32.
  • an upwardly extending, made of porcelain insulating pin 47 is centered according to FIG. 2, which is also centered at its upper end at the end of the first contact tongue 34.
  • the insulating pin 47 is thus clamped and centered between the bimetallic strip 44 and the first contact tongue 34 in such a way that it holds the free ends 46, 48 of the bimetallic strip 44 and the first contact tongue 34 at a precisely predetermined distance and transmits forces which act on the bimetallic strip 44 and occur on the actuating pin 49.
  • the actuating pin 49 rests from above on the surface of the first contact tongue 34, the actuating pin 49 being adjustable in height in the direction of the arrow Z via a threaded device 50 formed on the metal bridge 40 .
  • the threaded device 50 consists of a threaded sleeve 51 fastened on the metal bridge 40, in which an adjusting screw 52 is rotatably mounted and thus adjustable in height.
  • the adjusting screw 52 engages the actuating pin 49 and at the same time supports it at one end.
  • the first contact tongue 34 works on the principle of a snap spring, that is, the pressure from the actuating pin 49 on the first contact tongue 34 increases, which is caused by turning the adjusting screw 52 is reached, the snap point of the first contact tongue 34 is reached at some point and the contact 36 jumps suddenly towards the contact 37 and the two are connected to one another, as shown in FIG. 2.
  • the heating element 4 is supplied with current, so that the soleplate 3 heats up.
  • the heat is conducted via the heat conducting web 41 into the bimetallic strip 44, as a result of which the free end 46 of FIG. 2 moves upward and the first contact tongue 34 is moved upward via the insulating pin 47, thereby preloading it until this snapped.
  • the contact 36 moves from the contact 37 and the power supply to the heating element 4 is interrupted.
  • the temperature of the soleplate 3 now corresponds to the target temperature set on the thermostat 5 and thus on the adjusting member 19.
  • the contact lug 53 according to FIG. 1 establishes the connection to the connection 1 via the power line 54 connected to it, while the second contact lug 55 establishes the connection to the heating element 4 via the line 6 connected to it.
  • the thermostat 5 is surrounded by a sleeve 56 which is part of a cover plate 57 which shields the soleplate 3 upwards.
  • a cover plate 57 Above the cover plate 57 runs the housing 58 of the iron, on which a handle 59 is formed, but which is not shown in FIG. 2.
  • a ring 60 is attached in the cylindrical sleeve 56, which is provided on its inside with an annular groove 61.
  • An annular actuating element 62 which consists of two assembled half-shells 75, 76, is mounted in the annular groove 61.
  • a groove 64 in which a slotted clamping ring 65 is mounted, is formed on the actuating element 62 on the radially outer lateral surface 63.
  • the actuating element 62 includes a circular disk 66 and, with its inner surface 67, is in frictional engagement with the radially outer lateral surface 68 of the circular disk 66.
  • the frictional force acting on the outer surface 68 is achieved in that the forces exerted by the clamping ring 65 on the actuating element (62) consisting of two half-shells (75, 76) and extending radially to the center line 79 are transmitted directly to the outer surface 68.
  • the parts 62, 65, 66 form the coupling 95 of the direction of rotation switch 11.
  • the circular disk 66 is firmly connected to the ring 60 at the end facing the thermostat 5 via the ring loop 94, for example by gluing. The circular disk 66 is thus held in the position shown in FIG. 2 on the sleeve 56.
  • the circular disk 66 is provided with a through opening 69 which runs concentrically to the center line 79 and in which diametrically opposite a groove 70, 71 is formed, into which the legs of the U-shaped adjusting shaft 17 engage.
  • the adjusting shaft 17 penetrates the through opening 69 according to FIG. 2 upwards and engages in a driver opening 72 formed on the adjusting member 19 in a rotationally fixed manner.
  • Actuating cams are formed on the actuating element 62 in FIG. 2 and also actuate switches, not shown in this drawing.
  • FIGS. 3 and 4 a further embodiment of a direction of rotation switch 11 is shown, which is compared to the in Fig. 2 shown direction of rotation switch differs only in minor detail solutions. To avoid repetitions, therefore, in FIGS. 3 and 4 selected the same reference numerals for correspondingly identical components.
  • One difference, for example, compared to the direction of rotation switch 11 according to FIG. 2, is that a radially projecting annular collar 73 is formed on the outer surface of the circular disk 66 and lies in a groove 74 formed on the actuating element 62. As a result, the actuating element 62 is stably supported on the circular disk 66.
  • the actuating element 62 consists of two half-shells 75, 76, which each form a slot 77, 78 at their separation points in the installed state, so that both half-shells 75, 76 through the Clamping ring 65 are pressed with sufficient force against the outer surface 68 of the collar 73 of the actuating element 62.
  • the circular disk 66 is rotated by the adjusting member 19 (FIG. 2), a frictional torque is created by which the actuating element 62 is carried in the direction of rotation.
  • the actuating element 62 is only slotted on one side so that it forms only one part for easier assembly.
  • the circular disk 66 is rotatably mounted in a bore 81 formed on a base 80 and, on the other hand, in a further bore 83 of a pot-shaped cover 82 encapsulating the direction of rotation switch 11.
  • the cover 82 is connected to the base 80 via locking elements (not shown in the drawing).
  • a sheet metal part 90 is riveted on the base 80 in the direction perpendicular to the plane of the drawing below the contact tongues 86, 87 in FIG. 4, which has angled contacts 91, 92 at its lateral ends.
  • the contact tongue 86 can be brought into contact with the contact 91 after rotation of the actuating element 62 in the direction of rotation 12 '.
  • the contact 92 can be brought into contact with the contact tongues 87.
  • the tab 92 forms with the contact tongue 87 the left switch emitting the left direction of rotation of the direction of rotation switch 11 and the tab 91 forms with the contact tongue 86 the right switch emitting the right direction of rotation of the direction of rotation switch 11. 1 would be connected to line 10 and the contact tongue 87 to line 9.
  • the action of the iron according to the invention is as follows: If the iron is connected to the power supply, then according to FIG. 1, the line voltage is present at connection 1 and at the same time the microcontroller 8 is supplied with electrical energy via lines 26, 27 and the direction of rotation switch 11 via line 93. If the thermostat 5 assumes its closed position when the iron soleplate 3 is still cold, as shown in FIG. 1, the current flows via the thermostat 5 to the heating element 4, whereby the iron soleplate 3 heats up. When the thermostat 5 is closed, a signal is present via line 7 at the third input of microcontroller 8, while there is no signal at the first and second inputs connected to lines 9, 10.
  • the microcontroller 8 is designed such that it activates the yellow light-emitting diode 24 via its output line 21 in the initial conditions described above.
  • the thermostat 5 is opened for the first time, which occurs when the temperature of the soleplate 3 has reached the upper limit temperature of a set working range, the green light-emitting diode 25 is activated via the line 22 and the yellow light-emitting diode 24 is deactivated at the same time.
  • the latter display state remains unchanged, provided that the user neither actuates the adjusting member 19 nor disconnects the iron from the mains.
  • the microcontroller 8 receives a corresponding signal either via the power line 9 or the power line 10.
  • the microcontroller 8 now checks which signal is present at the input of the power line 7 and which LED is currently activated.
  • the microcontroller 8 thus suffices three data, namely the direction of rotation at the direction of rotation switch 11, the operating state of the thermostat 5 before and after rotation of the direction of rotation switch 5 and the old display state of the LEDs 23, 24, 25 before rotation of the direction of rotation switch 5 by the corresponding one in the Truth table according to claim 6 specified display element 23, 24, 25 to activate.
  • the adjusting member is rotated in the direction of a higher temperature and the thermostat 5 is closed after the rotation, the yellow LED 24 is activated instead of the green LED 25 (case 1 in FIG Truth table of claim 6). After the first opening of the thermostat 5, the green light-emitting diode 25 is then activated again instead of the yellow light-emitting diode 24.
  • the microcontroller 8 basically activates the red light-emitting diode 23 when the thermostat 5 is open, although the temperature of the thermostat 5 is in its working range due to an upper and lower deviation is determined by the target temperature.
  • the green light-emitting diode 25 only lights up when the thermostat 5 closes again for the first time. If, on the other hand, the thermostat 5 is closed after the power supply has been restored, the same conditions apply as when the iron is connected to the power supply when the soleplate 3 is cold. The initial conditions that activate the yellow light-emitting diode 24 are again present. When the thermostat 5 is opened for the first time, the green LED 25 is activated again instead of the yellow LED 24.
  • the left contact 13 shown in FIG. 1 corresponds to the contact lug 87 in FIG. 4 and the right contact 14 shown in FIG. 1 corresponds to the contact lug 86 in FIG. 4.
  • the center contact 15 shown in FIG. 1 corresponds to FIG. 4 Contacts 91, 92.
  • the circular disk 66 also rotates according to FIG. 4 via the adjusting shaft 17.
  • the actuating element 62 is also rotated to the left by the frictional engagement between the circular disk 66 and the actuating element 62.
  • the left contact tongue 87 is bent outward about the foot 88 via the left actuation cam 85 until the free end of the contact tongue 87 is in contact with the contact 92 and thereby a signal from the line 93 (FIG. 1) via the contacts 92 the actuated tongue 87 conducts.
  • the contact tongue 87 is connected to the first input of the microcontroller 8 via the electrical line 9.
  • the circular disk 66 continues to rotate, while the actuating element 62 remains due to the fixed contact 92, so that the current connection from the contact tongue 87 to the contact 92 is maintained . Due to the elastic bending of the contact tongue 87, a force is exerted on the actuating cam 85 which is always less than the frictional torque generated between the circular disk 66 and the actuating element 62.
  • the force of the contact tongue 87 causes the actuating element 62 and the circular disk 66 to be reset until the contact tongue 87 has reliably lifted off the contact 92.
  • the actuating element 62 has its central position again, as is also shown in FIGS. 1 and 4 is achieved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP90121065A 1989-11-14 1990-11-02 Bügeleisen mit einer elektrisch beheizten Bügeleisensohle Expired - Lifetime EP0428926B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3937766A DE3937766A1 (de) 1989-11-14 1989-11-14 Buegeleisen mit einer elektrisch beheizten buegeleisensohle
DE3937766 1989-11-14

Publications (3)

Publication Number Publication Date
EP0428926A2 EP0428926A2 (de) 1991-05-29
EP0428926A3 EP0428926A3 (en) 1991-07-03
EP0428926B1 true EP0428926B1 (de) 1995-12-27

Family

ID=6393453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121065A Expired - Lifetime EP0428926B1 (de) 1989-11-14 1990-11-02 Bügeleisen mit einer elektrisch beheizten Bügeleisensohle

Country Status (4)

Country Link
EP (1) EP0428926B1 (enrdf_load_stackoverflow)
AT (1) ATE132216T1 (enrdf_load_stackoverflow)
DE (2) DE3937766A1 (enrdf_load_stackoverflow)
ES (1) ES2080777T3 (enrdf_load_stackoverflow)

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.
US20130321120A1 (en) * 2012-05-31 2013-12-05 Art-Sea Industrial Company Limited Thermostat

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778913A (en) * 1954-10-06 1957-01-22 Gen Electric Temperature control and signal circuit
DE1130405B (de) * 1959-04-06 1962-05-30 Siemens Elektrogeraete Gmbh Buegeleisen
EP0024613A1 (de) * 1979-08-27 1981-03-11 Rowenta-Werke GmbH Elektrisch beheiztes Bügeleisen
US4686352B1 (en) * 1984-04-27 1993-12-14 Sunbeam Corporation Electronic pressing iron
US4580038A (en) * 1984-12-31 1986-04-01 Black & Decker, Inc. Indicating and control apparatus for a portable heating appliance
US4692589A (en) * 1986-02-05 1987-09-08 Hamilton Beach Inc. Electric iron having safety cutoff switch and temperature indicator
US4827104A (en) * 1986-10-16 1989-05-02 Dart Industries Inc. Phototransistor relay electronic temperature control for cordless irons

Also Published As

Publication number Publication date
DE59010011D1 (de) 1996-02-08
EP0428926A2 (de) 1991-05-29
ES2080777T3 (es) 1996-02-16
DE3937766C2 (enrdf_load_stackoverflow) 1992-01-09
DE3937766A1 (de) 1991-05-16
ATE132216T1 (de) 1996-01-15
EP0428926A3 (en) 1991-07-03

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