EP0818796A2 - Temperaturschalter, insbesondere einstellbarer Temperaturregler - Google Patents
Temperaturschalter, insbesondere einstellbarer Temperaturregler Download PDFInfo
- Publication number
- EP0818796A2 EP0818796A2 EP97111286A EP97111286A EP0818796A2 EP 0818796 A2 EP0818796 A2 EP 0818796A2 EP 97111286 A EP97111286 A EP 97111286A EP 97111286 A EP97111286 A EP 97111286A EP 0818796 A2 EP0818796 A2 EP 0818796A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- switch
- switching
- switch according
- lever
- 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.)
- Granted
Links
Images
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
- H01H37/36—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation
- H01H37/38—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation with bellows
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/12—Means for adjustment of "on" or "off" operating temperature
- H01H37/20—Means for adjustment of "on" or "off" operating temperature by varying the position of the thermal element in relation to switch base or casing
Definitions
- the invention relates to a temperature switch, in particular an adjustable temperature controller with a snap switch, the one actuated by an expansion element switching spring to which one of the expansion element acts relative to the switching spring movable pressure element, and with an overload protection for the switching spring.
- thermo / hydraulic expansion system works for the switch spring has an overload problem when the temperature controller at or near its switch-off point, that is at warm condition, reset to a lower temperature or is turned off.
- the expanded expansion box far above the switch-off point in the direction of the Switch spring pressed so that it is overloaded and under Circumstances can be permanently damaged.
- DE 44 35 303 A is a snap spring described, which endures overloads to a greater extent than previous snap springs.
- a temperature switch is in DE 20 58 511 C. described, in which the expansion box in a parallelogram of resilient shift levers connected by one Transfer rod, lies.
- the actual snap spring actuation happens through the second lever in the power flow, the acts on the snap switch under its spring force while the expansion box over the rest of the lever mechanism only is pressed to relieve them.
- This system works flawless, but is very expensive to manufacture.
- the object of the invention is a temperature switch to create the kind mentioned at the outset, which has little structural and above all, space requirements without the risk of overloading works flawlessly.
- the buffer element can be located directly in the actuating element, i.e. the one between the expansion socket and the snap spring Pressure piece or the like may be included.
- An easy one Version contains a preloaded, travel-limited spring, for example a compression spring. Here is the preload slightly larger than the actuating force of the switch spring and less than that critical for mechanical stress Force.
- the buffer element can be a can that consists of two against Pull apart limited but compressible e.g. sleeve-shaped box parts, which is the compression spring enclose. Grasp these two halves of the buffer element thus interlocked and are from the compression spring spread.
- One of the can parts can be attached directly an expansion box attached, for example instead of of the usual pressure piece soldered, while that interacting box part made of electrically insulating Material can exist and thus the expansion system electrically from the mostly live spring separates.
- the can parts do not have to be closed Coat, but it could be, for example tin part made of sheet metal also from several lateral There are webs which, like a claw, form the other part of the box seize.
- the invention enables the expansion element directly on the mostly designed as an expression of the snap spring Acting point acts. This enables the smallest size. However, it is also possible to increase the gear spring sensitivity a translation lever interpose. But this can also directly in Direction of printing lie and thus without expensive storage be trained. He can, for example, unilaterally according to Art be supported by a cutting edge bearing and with its act on the other side of the spring while the Buffer element at a corresponding to the desired gear ratio positioned place this one arm Lever attacks.
- a particularly simple embodiment is with an L-shaped Lever given either on a switch spring carrier is mounted and supported or in a recess this shift spring carrier is guided.
- Such a contact chamber can suitable plastic material as an integral component of an im remaining housing made of metal may be provided. She can be used as a substantially U-shaped hood in a recess of the upper part of the housing by clipping in, guide grooves etc. are attached. It thus acts as one of the contacts largely surrounding "spark chamber" and separates the touchable Parts from the live.
- the buffer element consists of a button-shaped, entirely closed can, which consists of two pot-shaped, each other overlapping halves, between which a compression spring is biased.
- the buffer element transfers the Switching force of the expansion socket in the range of forces in which the snap spring actuation takes place without any elasticity, so completely rigid while going beyond one Overload collapses telescopically.
- Temperature sensor 12 e.g. in the form of one with an expansion fluid filled tube over a capillary tube 13 is connected to an expansion box 14.
- the Expansion box consists of two bowl-shaped corrugated Sheet metal membranes that are connected at the edge. over a connecting nipple 15, the capillary tube 13 is connected.
- a retaining bolt 16 welded, the in a hollow setting shaft 17th plugged. This has an external thread 18 with an internal thread 19 works together in a metal housing 20 drawn sleeve 21 is provided.
- the adjusting shaft 17 is flattened on one side so that it cannot rotate about an adjustment knob to record.
- An adjusting screw 22 is provided in it, which acts on the retaining bolt 16.
- the housing 20 is made of sheet metal and has the shape of a rectangular, partly openwork box whose top fastening claws 22 for installing the Temperature controller are formed.
- the bottom is from a base part 23 made of temperature-resistant, shape-resistant and electrically insulating material, for example steatite or another ceramic material. At this the housing is fixed by twist straps 24.
- the plate-shaped base part 23 carries a snap switch 25.
- This has a switching spring 26 which on a Switch spring carrier 27 is attached.
- the shift spring carrier 27 is a relatively small solid sheet metal part, which is a shift tongue abutment 28 in the form of a turn.
- On him is a shift tongue 29 supported by an approximately U-shaped Cut separated from the rest of the switch spring is. Due to their deflection and preload, which they the Switching spring there, with the end remote from contact Rivets 30 on the switch spring carrier with fixed switch spring their front, the switch contact 31 carrying end at their Snap the switching point between two stable switching positions.
- the switch-on position shown in Fig. 1 is her Contact 31 on a counter contact 32, which is on a Mating contact bridge 33 is located.
- In the off position is the front end of the switch spring on one of the Base part formed projection 34 forming a counter bearing on.
- a buffer element 38 trained and effective actuator appropriate. It consists of one at the bottom of the Expansion box welded in the form of a sheet metal shell trained can part 39, which by means of a bent edge or tooth-like edge projections 40 under the protruding outer edge 41 of a second can part 42 which grips the shape one made of electrically insulating material, for example Steatite, existing crucible.
- a compression spring 43 is arranged inside the two Can parts 39, 42. She is clamped between the two can parts so that they have a Has a preload that is certainly greater than that Actuating force that the snap switch needs to over to be pushed away from its switching point.
- the buffer element thus designed as a closed pressure can acts on a pronounced pressure point 44 of an L-shaped Lever 45, which is turned on as a translation lever is. With its also to create clear It affects the pronounced front end 46 an actuation point 47 of the switching spring, which by a transverse bead is formed.
- the two support legs protrude from both sides a recess 50 in the side edge of the snap switch carrier 27 in, so that the support legs are guided therein.
- Protruding lugs 51 on the inside of the support legs 48 are barbed and care after the Lever 45 under pressure from above into the recesses 50 is pressed in, for securing against lifting the Lever.
- a stop 52 is located on the switch spring support 27 below the actuating point 47 of the snap spring provided so that he catches them after executing their snap movement and prevents further deflection.
- Fig. 1 shows that the contact area, i.e. the front end the switching spring 26 with the contact 31 and the counter contact 32, of a cover 53 made of insulating material is surrounded. It covers the top, front and the from both sides. Because the bottom of the base plate 23 is formed, so it only becomes the inside of the switch open chamber formed, the risk of contamination and contact excludes. The cover 53 is snapped into place fixed to a slot 54 of the housing.
- the assembly of the temperature controller according to the invention can be done individual components that can be prefabricated by simple plugging, bending or flanging operations are carried out will.
- the filled and soldered component sensor / capillary tube / expansion socket 12, 14 contains the upper one Can part 39. It is then only necessary to use spring 43 insert, squeeze so that they have their bias receives and then bend the claws or teeth 40 so that the buffer element 38 held together as a button-shaped unit becomes.
- the parts of the snap switch are on the base part 23 by inserting into the slots 53 and twisting the tabs 36, 37 and the twist straps 35 set.
- the lever 45 is from above the snap switch carrier pressed and clicks due to a formed by the lugs 51 Snap lock there.
- the adjustment is made using the adjusting screw 22.
- the setting shaft 17 for setting a certain temperature rotated so that the thread 18, 19th the expansion box 14 and thus the buffer element 38 in one determined position along the axis 55 of the adjusting shaft brought.
- the temperature sensor 12 When the temperature sensor 12 is warmed up, it expands Sensor 12 contained expansion fluid and expands the Expansion box 14 so that the buffer element 38 after moved down, the lever 45 pivoted clockwise and acts on the snap spring via the actuation point 47.
- the lever 45 is supported on its cutting edge bearings 49 from. Due to the shorter lever arm between the cutting edge bearings and the pressure point 44 on the lever opposite the distance operating point 47 to cutting edge bearing 49, the switching movement translated approximately in a ratio of 2: 1.
- the switching spring is supported via the switching tongue 29 made that in the unloaded state of the switching spring outer end with the contact 31 on the mating contact, which Switch is closed.
- the one about the tabs 36, 37 connected circuit is via the snap spring closed and the switch is on.
- the buffer element 38 comes into effect.
- necessary force on the actuation point 47 can Compress spring 43 so that the two halves of the can 39, 42 telescopically push together through the buffer element formed button thus yields.
- the Switch spring can sit on the stop 52 so that it is not bent unnecessarily.
- the forces and the deflections are in any case in the elastic area of the switch spring, so that no permanent damage occurs.
- the buffer element expands under the effect of Spring 43 again at exactly the same length as before Squeeze out.
- the invention is a special simple method of overload protection was created.
- the actuation takes place via an absolute in the operating state rigid and only yielding when overloaded after that, however, a precisely expanding, transfer link in Form of an operating button on the pressure cell itself.
- the transmission lever can be very short and compact be so that it does not affect the size.
- Fig. 4 shows an embodiment in which that in a similar manner formed buffer element 38 on a metal pressure piece 56 the expansion box is attached and immediately, i.e. without Translation lever 45, on the operating point 47 of the Switch spring 26 acts.
- This execution that preferred is when no translation is necessary is special simple and with direct switching effect. Otherwise, the Training and function the same as described in FIGS. 1 to 3.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
- Springs (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
Description
- Fig. 1
- einen Längsschnitt durch einen Temperaturregler,
- Fig. 2
- eine Draufsicht auf den Basisteil des Temperaturreglers (entlang Schnittlinie II in Fig. 1),
- Fig. 3
- eine stark vergrößerte Ansicht eines Details in Richtung des Pfeils III in Fig. 1 und
- Fig. 4
- einen Teilschnitt durch die Funktionskomponenten eines Temperaturreglers in einer anderen Ausführungsform
Claims (12)
- Temperaturschalter, insbesondere einstellbarer Temperaturregler, mit einem Schnappschalter (25), der eine von einem Ausdehnungselement (14) betätigte Schaltfeder (26) aufweist, auf die ein von dem Ausdehnungselement (14) relativ zur Schaltfeder (26) bewegbares Betätigungselement einwirkt, und mit einer Überlastungssicherung für die Schaltfeder (26), dadurch gekennzeichnet, daß die Überlastungssicherung ein zwischen dem Ausdehnungselement (14) und der Schaltfeder (26) eingeschaltetes Pufferelement (38) enthält, das bei einer oberhalb der Betätigungskraft der Schaltfeder (26) im Schaltpunkt liegenden Kraft längenänderbar ist.
- Temperaturschalter nach Anspruch 1, dadurch gekennzeichnet, daß das Pufferelement (38) ein Druckelement ist, das durch die oberhalb der Betätigungskraft der Schaltfeder (26) liegende Kraft zusammendrückbar ist.
- Temperaturschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Pufferelement (38) im Betätigungselement enthalten ist.
- Temperaturschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Pufferelement (38) eine vorgespannte, wegbegrenzte Feder (43) enthält.
- Temperaturschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Pufferelement (38) eine Dose ist, die aus zwei gegen Auseinanderziehen begrenzten, jedoch zusammendrückbaren, ggf. hülsenförmigen Dosenteilen (39, 42) besteht, die eine Druckfeder (43) umschließen, wobei vorzugsweise eines der Dosenteile (39) an einer Ausdehnungsdose (14) eines thermo/hydraulischen Ausdehnungssystems (12, 13, 14) angebracht ist und/oder daß ein anderes der Dosenteile (42) aus elektrisch isolierendem Werkstoff besteht.
- Temperaturschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schaltfeder (26) eine ausgeprägte Betätigungsstelle (47) aufweist, auf die das Betätigungselement (38, 45) einwirkt.
- Temperaturschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schaltfeder (26) nach Überwindung ihres Schaltpunktes an einem Anschlag (52) abgestützt ist, vorzugsweise unmittelbar an ihrer Betätigungsstelle (47).
- Temperaturschalter, insbesondere nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sein Ausdehnungselement (14) über einen Hebel (45) auf seine Schaltfeder (26) einwirkt, wobei der Hebel einseitig nach Art einer Schneidenlagerung abgestützt und mit seiner anderen Seite (46) auf die Schaltfeder (26) einwirkt.
- Temperaturschalter nach Anspruch 8, dadurch gekennzeichnet, daß das Gegenlager der Schneidenlagerung an einem Schaltfederträger (27) vorgesehen ist und der Hebel (45) an diesem eingehängt ist.
- Temperaturschalter nach Anspruch 8, dadurch gekennzeichnet, daß der Hebel (45) eine L-Form hat und insbesondere in wenigstens einer Ausnehmung (50) eines Schaltfederträgers (27) geführt ist.
- Temperaturschalter nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß der die Scheidenlagerung (49) bildende Stützschenkel (48) des L-förmigen Hebels (45) eine gegabelte Form mit zwei in seitlichem Abstand voneinander liegenden Lagerstellen (49) aufweist, wobei die Stützschenkel (48) vorzugsweise in seitliche Ausnehmungen (50) des Schaltfederträgers (27) eingreifen und dort durch eine Schnappsicherung (51) gesichert sind.
- Temperaturschalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Bereich der Schaltkontakte (31, 32) des Schnappschalters (25) von einer isolierenden Abdeckung (53) umgeben ist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9730689T SI0818796T1 (en) | 1996-07-11 | 1997-07-04 | Thermal switch, in particular adjustable temperature controller |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19627969A DE19627969A1 (de) | 1996-07-11 | 1996-07-11 | Temperaturschalter, insbesondere einstellbarer Temperaturregler |
| DE19627969 | 1996-07-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0818796A2 true EP0818796A2 (de) | 1998-01-14 |
| EP0818796A3 EP0818796A3 (de) | 1998-09-30 |
| EP0818796B1 EP0818796B1 (de) | 2004-09-29 |
Family
ID=7799559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97111286A Expired - Lifetime EP0818796B1 (de) | 1996-07-11 | 1997-07-04 | Temperaturschalter, insbesondere einstellbarer Temperaturregler |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0818796B1 (de) |
| DE (2) | DE19627969A1 (de) |
| ES (1) | ES2230578T3 (de) |
| SI (1) | SI0818796T1 (de) |
| TR (1) | TR199700563A2 (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0962951A3 (de) * | 1998-06-04 | 2000-09-13 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Temperaturschalter, insbesondere einstellbarer Temperaturregler |
| US7345572B2 (en) | 2004-02-24 | 2008-03-18 | Electrovac, Fabrikation Elektrotechnischer Spezialartikel Ges.M.B.H. | Temperature sensor |
| CN111180261A (zh) * | 2020-01-08 | 2020-05-19 | 温州乐恒科技有限公司 | 一种新式的液涨式机械温控器 |
| CN111276367A (zh) * | 2020-03-05 | 2020-06-12 | 安徽汇德电子科技有限公司 | 一种精密可调液胀温控器 |
| CN112660274A (zh) * | 2021-01-14 | 2021-04-16 | 孟海玲 | 一种防雨型自行车 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19847503A1 (de) * | 1998-10-15 | 2000-04-20 | Ego Elektro Geraetebau Gmbh | Elektrische Schalteinrichtung |
| DE102013218014B4 (de) | 2013-09-09 | 2015-03-19 | E.G.O. Elektro-Gerätebau GmbH | Gasventileinrichtung und Gasgerät mit einer Gasventileinrichtung |
| DE102014216363A1 (de) | 2014-08-18 | 2016-02-18 | E.G.O. Elektro-Gerätebau GmbH | Gasventileinrichtung für ein Gasgerät und Gasgerät |
| CN105185616A (zh) * | 2015-08-14 | 2015-12-23 | 苏州科明纺织有限公司 | 一种用于纺织机械的直线式行程开关 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT168240B (de) * | 1949-12-01 | 1951-05-10 | Richard Fonovits Kommanditgese | Thermische Schaltvorrichtung, thermischer Regler od. dgl. |
| AT222391B (de) * | 1959-10-29 | 1962-07-25 | Richard Fonovitz Kommanditgese | Temperaturregler |
| NL6908862A (de) * | 1968-06-11 | 1969-12-15 | ||
| AT308424B (de) * | 1971-04-30 | 1973-07-10 | Richard Fonovits Kommanditgese | Elektrischer Temperaturregler |
| GB1378693A (en) * | 1973-05-04 | 1974-12-27 | Dewandre Co Ltd C | Pressure switches |
| DE2724527A1 (de) * | 1977-05-31 | 1978-12-14 | Emerson Electric Gmbh | Temperaturregler |
| DE3238955A1 (de) * | 1982-10-21 | 1984-04-26 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Temperaturschaltgeraet |
| DE3634938A1 (de) * | 1986-10-14 | 1988-04-21 | Emerson Electric Gmbh | Regler, insbesondere temperaturregler |
| US4752658A (en) * | 1987-06-22 | 1988-06-21 | Caterpillar Inc. | Pressure checked electrical pressure switch |
| FR2618940B1 (fr) * | 1987-07-28 | 1995-06-02 | Vernet Procedes Sa | Perfectionnements aux thermocontacts a disque cloquant |
| DE4006903A1 (de) * | 1990-03-06 | 1991-09-12 | Rathgeber Kg | Temperatur-regler |
| DE4435303A1 (de) * | 1994-10-01 | 1996-04-04 | Ego Italiana | Schnappschalter, insbesondere für Temperaturschalter |
-
1996
- 1996-07-11 DE DE19627969A patent/DE19627969A1/de not_active Withdrawn
-
1997
- 1997-07-01 TR TR97/00563A patent/TR199700563A2/xx unknown
- 1997-07-04 EP EP97111286A patent/EP0818796B1/de not_active Expired - Lifetime
- 1997-07-04 DE DE59711967T patent/DE59711967D1/de not_active Expired - Lifetime
- 1997-07-04 SI SI9730689T patent/SI0818796T1/xx unknown
- 1997-07-04 ES ES97111286T patent/ES2230578T3/es not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0962951A3 (de) * | 1998-06-04 | 2000-09-13 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Temperaturschalter, insbesondere einstellbarer Temperaturregler |
| KR100612629B1 (ko) * | 1998-06-04 | 2006-08-14 | 에.게.오. 에렉트로-게래테바우 게엠베하 | 가변 온도 조절기 등의 온도 스위치 |
| US7345572B2 (en) | 2004-02-24 | 2008-03-18 | Electrovac, Fabrikation Elektrotechnischer Spezialartikel Ges.M.B.H. | Temperature sensor |
| CN111180261A (zh) * | 2020-01-08 | 2020-05-19 | 温州乐恒科技有限公司 | 一种新式的液涨式机械温控器 |
| CN111276367A (zh) * | 2020-03-05 | 2020-06-12 | 安徽汇德电子科技有限公司 | 一种精密可调液胀温控器 |
| CN112660274A (zh) * | 2021-01-14 | 2021-04-16 | 孟海玲 | 一种防雨型自行车 |
Also Published As
| Publication number | Publication date |
|---|---|
| SI0818796T1 (en) | 2005-06-30 |
| ES2230578T3 (es) | 2005-05-01 |
| DE19627969A1 (de) | 1998-01-15 |
| DE59711967D1 (de) | 2004-11-04 |
| EP0818796A3 (de) | 1998-09-30 |
| TR199700563A2 (xx) | 1998-01-21 |
| EP0818796B1 (de) | 2004-09-29 |
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