EP0935689A1 - Thermisch gesteuerter mechanischer schalter - Google Patents
Thermisch gesteuerter mechanischer schalterInfo
- Publication number
- EP0935689A1 EP0935689A1 EP97941839A EP97941839A EP0935689A1 EP 0935689 A1 EP0935689 A1 EP 0935689A1 EP 97941839 A EP97941839 A EP 97941839A EP 97941839 A EP97941839 A EP 97941839A EP 0935689 A1 EP0935689 A1 EP 0935689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mechanical switch
- transmission lever
- switch according
- edge
- snap disk
- 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- Withdrawn
Links
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
- D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
- D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
- D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator
Definitions
- the invention relates to a thermally controlled mechanical switch for actuating a valve, in particular a liquid valve in a steam iron, with the further features of the preamble of patent claim 1.
- liquid stop switches are already provided in steam irons according to the prior art, which bimetallically closed a flow valve when the temperature falls below a certain target temperature, so that water can no longer reach the soleplate.
- a certain minimum stroke of the controlling switching element is required, which usually cannot be applied directly by bimetal-controlled mechanical switches. That is why the state of the art has already started to provide a sufficient adjustment stroke for the Valve through translation devices or levers bring about.
- the invention is based on the object of designing a thermally controlled mechanical switch with a transmission lever in such a way that it can be produced and assembled in a simple manner and enables the actuated valve to be actuated safely. This object is achieved by the characterizing features of patent claim 1. Advantageous further developments of the switch result from subclaims 2 to 24.
- the transmission lever cooperating with the bimetallic snap disk is designed as a separate, essentially flat, bent stamped part which at least partially covers the bimetallic snap disk, partially acts on the bimetal snap disk edge and is fastened together with the center of the snap disk.
- a fastening section of the transmission lever provided with a fastening recess is tongue-like free cut, the tongue end points in the direction of the actuating end of the transmission lever which projects beyond the edge of the snap disk and which cooperates with the valve.
- This combination of features ensures reliable movement transmission and amplification of the bimetallic movement on the valve with only one connected part. Due to the tongue-like cut-out fastening section of the transmission lever, it can be manufactured in one piece and screwed parallel to the bimetallic snap disk without negatively influencing its thermally dependent through-movement. Sufficient spring travel is guaranteed.
- a U-shaped bending recess which can run as a U-slot of constant width parallel to the tongue edge of the fastening section, ensures sufficient flexibility of the transmission lever in the fastening area.
- Stiffening elements ensure that the amplification of the stroke is not reduced by suspension of the transmission lever. If the stiffening elements are designed as bevels of the longitudinal edge of the transmission lever, they are well suited to act on the edge of the bimetallic snap disk at the same time as scanning elements. However, separate scanning points can also be provided for scanning the edge of the bimetallic snap disk, which are designed, for example, as embossing nipples or the like. If the separate scanning points are arranged diametrically opposite one another with respect to the fastening recess of the transmission lever, uniform loading of the bimetallic snap disk is ensured, as a result of which back and forth movements of the bimetal snap disk are not impeded by changing ambient temperatures. The same also applies to a three-point scanning when the three scanning points are substantially evenly distributed and spaced around the fastening recess of the transmission lever.
- the transfer lever is acted upon resiliently by the transfer lever. Furthermore, the fastening section is bent out of the main plane of the transmission lever in the direction of the bimetallic snap disk.
- Claims 14 - 16 relate to stiffening measures of the transmission lever.
- the material areas between the rear edge of the transmission lever and the U-ends of the bending recess are designed as predetermined bending points of relatively thin cross-section, so that these areas act like joint or hinge areas.
- Claims 19ff relate to a modified embodiment of the switch with a transmission lever with an essentially rectangular outer contour.
- the features described in detail aim to further improve the increase in the actuating stroke, for example in that when the scanning point located at the free end of the actuating section is actuated by the edge of the bimetallic snap disk, the rear edge region of the transfer lever opposite this to the bimetallic snap disk there- is bent, which is possible due to the distance of the transfer lever from the bimetallic snap disk.
- Claims 23 and 24 bring about an improvement in the spring properties within the fastening section.
- Figure 1 shows a first embodiment of a mechanical switch with a wedge-shaped transmission lever.
- Fig. 2 shows a modified version of a mechanical switch with a substantially rectangular transmission lever.
- the thermally controlled mechanical switch 1 is used to actuate a liquid valve (not shown in more detail) in a steam iron and for this purpose has a bimetallic snap disk 2, which lies under the circular left-hand end 3 of a transmission lever 4 and therefore in the drawing. 1 is not visible, but is only hinted at.
- the transmission lever 4 scans the snap movement of the snap disk edge 6 with scanning points 5 and increases the actuating stroke which acts on the valve (not shown) by the design of the transmission lever 4 described in more detail below.
- the transmission lever 4 is designed as a separate, essentially flat stamped and bent part.
- the transmission lever 4 is fastened together with the center 7 of the bimetallic snap disk 2, for which purpose a fastening section 9 provided with a fastening recess 8 is provided, which is cut out like a tongue in relation to the other surface 10 of the transmission lever 4.
- the tongue end 11 points in the direction of the fastening end 12 of the transmission lever 4 which projects beyond the snap disc edge 6 of the bimetallic snap disc 2 and which cooperates with the valve (not shown in more detail).
- the fastening section 9 is surrounded by a U-shaped bending recess 14 running parallel to the tongue edge 13 of the fastening section 9.
- the transmission lever 4 has a substantially wedge-shaped outer contour. It also has stiffening elements which run approximately in the longitudinal direction of the transmission lever 4.
- the stiffening elements can be designed on the one hand as beads 20 which run parallel to the longitudinal edge 21 of the transmission lever 4. However, it is also possible to design the stiffening elements as folds 22 of the longitudinal edges 21. In this case it is possible that bevels 22 act on the edge 6 of the bimetallic snap disk 2 at the points marked with reference number 30.
- sampling points 5 are now provided in FIG. 2, a sampling point 5 ′ being arranged between the fastening recess 8 and the actuating end 12 of the transmission lever 4.
- the rear end 3 of the transmission lever 4 facing away from the actuating end 12 is approximately circular and somewhat of the bimetallic snap disk 2 bent away.
- a reinforcement extending transversely to the longitudinal direction of the transmission lever in the form of a bend 40 is provided in the region of the end 3. The fold 40 also points away from the bimetallic snap disk 2.
- the material areas 45 between the rear edge 3 opposite the actuating end 12 and the U-ends 46 of the bending recess 14 are designed as predetermined bending points and have a relatively slim cross section.
- the bimetallic snap disk 2 is arched away from the transmission lever 4 in the cold state and the edge 6 of the bimetallic snap disk 2 in this non-excited cold state from the scanning points 5 acting on it the bevel 22 has a small distance.
- the edge 6 abruptly runs against the scanning points 5 or the bevel 22 and thereby leads to a very quick and quick switching behavior of the entire switch.
- the transmission lever 4 has an essentially rectangular outer contour. A short side of the rectangle is pulled out of the rectangle in a wedge shape to form the actuating end 12 '.
- the fastening section 9 ' is generally rectangular. Furthermore, three scanning points 5, 5 'are provided for scanning the edge 6 of the bimetallic snap disk 2.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Thermally Actuated Switches (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19645102 | 1996-10-31 | ||
DE1996145102 DE19645102C1 (de) | 1996-10-31 | 1996-10-31 | Thermisch gesteuerter mechanischer Schalter zur Betätigung eines Ventils |
PCT/DE1997/001873 WO1998018992A1 (de) | 1996-10-31 | 1997-08-28 | Thermisch gesteuerter mechanischer schalter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0935689A1 true EP0935689A1 (de) | 1999-08-18 |
Family
ID=7810407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97941839A Withdrawn EP0935689A1 (de) | 1996-10-31 | 1997-08-28 | Thermisch gesteuerter mechanischer schalter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0935689A1 (de) |
DE (1) | DE19645102C1 (de) |
WO (1) | WO1998018992A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19842923A1 (de) * | 1998-09-18 | 2000-03-23 | Univ Dresden Tech | Mechanismus zum Erzeugen von Stellbewegungen |
DE10225576B4 (de) * | 2001-02-10 | 2007-05-16 | Inter Control Koehler Hermann | Thermisch gesteuerte Einrichtung zur Betätigung einer Ventilöffnung |
DE10106141B4 (de) * | 2001-02-10 | 2006-12-07 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermisch gesteuerte Einrichtung zur Betätigung einer Ventilöffnung, insbesondere eines Flüssigkeitsventils |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2317706A (en) * | 1941-04-11 | 1943-04-27 | Westinghouse Electric & Mfg Co | Steam iron |
FR2514461A1 (fr) * | 1981-10-12 | 1983-04-15 | Leneveu Michel | Grille d'embout de gaine a action automatique |
US4507642A (en) * | 1982-07-29 | 1985-03-26 | Otter Controls Limited | Snap-acting thermally-responsive bimetallic actuators |
DE3407990A1 (de) * | 1984-03-03 | 1985-09-12 | Pierburg Gmbh & Co Kg, 4040 Neuss | Mehrwegeventil |
ES289976Y (es) * | 1985-10-30 | 1988-07-01 | Oficina De Investigacion Agrupada,S.A. | Valvula perfeccionada de paso de agua para planchas de vapor |
US5037061A (en) * | 1989-09-19 | 1991-08-06 | Robertshaw Controls Company | Valve construction and method of making the same |
GB9014086D0 (en) * | 1990-06-25 | 1990-08-15 | Strix Ltd | Steam irons |
GB9109316D0 (en) * | 1991-04-30 | 1991-06-19 | Otter Controls Ltd | Improvements relating to electric switches |
DE4410408C2 (de) * | 1994-03-25 | 1996-10-24 | Bosch Siemens Hausgeraete | Dampfbügeleisen mit Tropfventil |
-
1996
- 1996-10-31 DE DE1996145102 patent/DE19645102C1/de not_active Expired - Fee Related
-
1997
- 1997-08-28 WO PCT/DE1997/001873 patent/WO1998018992A1/de not_active Application Discontinuation
- 1997-08-28 EP EP97941839A patent/EP0935689A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9818992A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998018992A1 (de) | 1998-05-07 |
DE19645102C1 (de) | 1998-03-05 |
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Legal Events
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