EP0818796B1 - Temperaturschalter, insbesondere einstellbarer Temperaturregler - Google Patents

Temperaturschalter, insbesondere einstellbarer Temperaturregler Download PDF

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Publication number
EP0818796B1
EP0818796B1 EP97111286A EP97111286A EP0818796B1 EP 0818796 B1 EP0818796 B1 EP 0818796B1 EP 97111286 A EP97111286 A EP 97111286A EP 97111286 A EP97111286 A EP 97111286A EP 0818796 B1 EP0818796 B1 EP 0818796B1
Authority
EP
European Patent Office
Prior art keywords
spring
thermal switch
switching
switch according
switching spring
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
EP97111286A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0818796A3 (de
EP0818796A2 (de
Inventor
Hans Mayer
Franz Dr. Bogdanski
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to SI9730689T priority Critical patent/SI0818796T1/xx
Publication of EP0818796A2 publication Critical patent/EP0818796A2/de
Publication of EP0818796A3 publication Critical patent/EP0818796A3/de
Application granted granted Critical
Publication of EP0818796B1 publication Critical patent/EP0818796B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/36—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 according to the preamble of claim 1, in particular an adjustable temperature regulator, with a snap-action switch, which is one of an expansion element actuated switching spring, on which one of the expansion element acting relative to the switching spring movable pressure element.
  • thermo / hydraulic Working extension system In temperature controllers, especially those with a thermo / hydraulic Working extension system, enters for the shift spring Overload problem when the temperature controller is at or near his switch-off point, that is, when warm, to a lesser Temperature is reset or turned off.
  • the extended expansion box far beyond the switch-off point in Direction pressed on the switch spring, so that these overloaded and under Circumstances can be permanently damaged.
  • a temperature switch is known in which also via an expansion element and a power transmission a snap-action switch is triggered.
  • the triggering of the snap-action switch takes place via a leaf spring, which to prevent can override a override of the snap switch.
  • the object of the invention is a temperature switch of the aforementioned To create kind of, with little structural and above all Spatial effort without overload risk works flawlessly.
  • the overload protection a between expansion element and snap spring contains activated buffer element, which at a above the actuating force of the switching spring lying in the switching point Compressive force is compressible, the transfer happens on direct Ways and without any elasticity or the strain of one Foreign power and therefore absolutely free of play. Only when exceeding the maximum Actuation force occurs Rec.g. the buffer element a, wherein this force should be such that it is below which is a damage to the snap spring inducing force. It can also help if the snap spring after overcoming its switching point is supported on a stop, preferably immediately at their point of actuation.
  • the embodiment of the invention with a squeezable buffer element the structurally cheapest, it would also be possible, acting on train buffer element use.
  • the buffer element may be directly in the actuator, i. the between expansion box and snap spring lying pressure piece or the like.
  • a simple version contains one preloaded, wegbe regardinge spring, such as a compression spring. The bias is slightly greater than the actuation force of Switching spring and lower than that for mechanical stress critical force.
  • the buffer element is a can consisting of two against pulling apart limited, but compressible, sleeve-shaped Can parts that surround the compression spring. These two Halves of the buffer element thus engage positively in one another and are spread by the compression spring. It can one of the can parts be attached directly to an expansion box, for example soldered in place of the usual pressure piece, while the cooperating Can part made of electrically insulating Material can exist and thus the expansion system electrically from the mostly live snap spring separates.
  • the can parts do not have to be closed Mantel exist, but it could be for example the made of sheet metal can also part of several lateral Webs exist, which in the manner of a claw the other can part take.
  • the invention makes it possible that the expansion element directly on the most trained as expression of snap spring Actuation point acts. This allows the smallest size. However, it is also possible to increase the snap spring sensitivity a transmission lever interpose. But this can also be directly in Pressure direction and thus without expensive storage be educated. He can, for example, unilaterally Art be supported by a cutting edge bearing and with his other side on the snap spring, while the Buffer element at a corresponding to the desired transmission ratio Positioned body of this one-armed Levers attacks.
  • a particularly simple embodiment is with an L-shaped Lever given, either on a spring-loaded carrier suspended and supported or in a recess this switch spring carrier is guided.
  • Such a contact chamber can be made suitable plastic material as an integral part of an im be provided remaining housing made of metal. She can act as a substantially U-shaped hood in a recess of the upper housing part by clipping, guide grooves etc. are attached. It acts as one of the contacts largely surrounding "spark chamber" and separates the touchable Parts of the current-carrying.
  • the buffer element consists of a button-shaped, entirely closed can, consisting of two cup-shaped, each other consists of halves, between which a compression spring is biased.
  • the buffer element transmits the Switching force of the expansion can in the force range in which the snap spring actuation takes place without any elasticity, so completely rigid, while in a beyond Overload collapses telescopically.
  • Fig. 1 to 3 show the switching component of a temperature controller 11.
  • Temperature sensor 12 e.g. in the form of one with an expansion fluid filled tube via a capillary tube 13 is connected to an expansion box 14.
  • the Expansion box consists of two bowl-shaped corrugated Sheet metal membranes, which are connected together at the edge. over a connection nipple 15, the capillary tube 13 is connected.
  • a retaining bolt 16 welded, in a hollow setting shaft 17 plugged. This has an external thread 18, with an internal thread 19 working together in one of a metal case 20 pulled sleeve 21 is provided.
  • the adjusting shaft 17 is flattened on one side to a knob rotatably take. In it an adjusting screw 22 is provided which acts on the retaining bolt 16.
  • the housing 20 is made of sheet metal and has the shape a rectangular, partially open box the top fastening claws 22 for installation of the Temperature controller are formed.
  • the bottom is from a base part 23 of temperature-resistant, form-solid and electrically insulating material, for example steatite or other ceramic material. At this the housing is defined by twist tabs 24.
  • the plate-shaped base part 23 carries a snap-action switch 25.
  • This has a switching spring 26 which is connected to a Switch spring carrier 27 is attached.
  • the switch spring carrier 27 is a relatively small solid sheet metal part that is a tabbed abutment 28 in the form of a bend.
  • On him is a switching tongue 29 supported by an approximately U-shaped Notch separated from the rest of the switching spring is.
  • Rivets 30 switch spring fixed to the switch spring carrier her front, the switch contact 31 end bearing at her Snap switching point between two stable switch positions.
  • In the closed position shown in Fig. 1 are her Contact 31 on a mating contact 32, located at a Counter contact bridge 33 is located.
  • In the off position lies the front end of the switching spring on one of the Base part molded, an abutment-forming projection 34th 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 formed can part 39, which by means of bent edge or tooth-like edge projections 40 under the protruding outer edge 41 of a second can part 42 engages the shape one of electrically insulating material, for example Steatite, has existing crucible.
  • a compression spring 43 is arranged inside the two Can parts 39, 42. She is clamped between the two parts of the can so that they have a Preload, which is certainly greater than that Operating force that the snap-action switch needs to over to be pushed away its switching point.
  • the two support legs protrude from both sides in each a recess 50 in the side edge of the snap switch carrier 27 in, so that the support legs are guided therein.
  • Projecting lugs 51 on the inside of the support leg 48th are barb-like and care after the Lever 45 under pressure from above into the recesses 50 is pressed in, for a backup against lifting the Lever.
  • On the switch spring carrier 27 is a stop 52 below the actuating point 47 of the snap spring provided so that he intercepts these after execution of their snap action and prevents further deflection.
  • Fig. 1 shows that the contact area, i. the front end the switching spring 26 with the contact 31 and the mating contact 32, from an existing insulating material cover 53rd is surrounded. It covers the top, front and the off both side surfaces. Because the bottom of the base plate 23 is formed, so one only to the switch interior open chamber formed, the risk of contamination and contact excludes.
  • the cover 53 is snap-locked fixed to a slot 54 of the housing.
  • the assembly of the temperature controller according to the invention can be made individual components that can be prefabricated by simple plugging, bending or crimping operations made become.
  • the filled and soldered component probe / capillary tube / expansion box 12, 14 contains the upper one Can part 39. It is then only necessary, the spring 43 to insert, squeeze, so that they have their bias receives and then the claws or teeth 40 bend so that the buffer member 38 held together as a button-shaped unit becomes.
  • the parts of the snap switch are on the base part 23rd by inserting into the slots 53 and twisting the tabs 36, 37 and the twisting tabs 35 set.
  • the lever 45 is from above the snap switch carrier pressed and locked due to a formed by the noses 51 Snap lock in there.
  • the adjustment is made via the adjusting screw 22.
  • the adjusting shaft 17 for adjusting a rotated certain temperature so that over the thread 18, 19 the expansion box 14 and thus the buffer element 38 in a certain position along the axis 55 of the setting shaft is brought.
  • the support of the switching spring via the switching tongue 29 is so made that in the unloaded state of the switching spring the outer end with the contact 31 abuts the mating contact, the Switch is closed.
  • the over the flat latches 36, 37 connected circuit is via the snap spring closed and the switch is on.
  • the buffer element 38 to the effect.
  • necessary force on the actuating point 47 may be the Compress spring 43 so that the two can halves 39, 42 telescopically push through the buffer element formed actuator button so gives in.
  • the Switching spring can sit on the stopper 52, so that she is not bent unnecessarily.
  • the forces and the deflections are in any case in the elastic range of the switching spring, so that no permanent damage occurs.
  • the buffer element expands under the effect of Spring 43 back to exactly the same length as before Squeezing out.
  • Fig. 4 shows an embodiment in which in a similar manner formed buffer element 38 on a metal pressure piece 56th the expansion box is attached and immediately, i. without Translation lever 45, on the actuating point 47 of Switching spring 26 acts.
  • This design the preferred is, if no translation is necessary, is special easy and with direct switching action. 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)
EP97111286A 1996-07-11 1997-07-04 Temperaturschalter, insbesondere einstellbarer Temperaturregler Expired - Lifetime EP0818796B1 (de)

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 EP0818796A2 (de) 1998-01-14
EP0818796A3 EP0818796A3 (de) 1998-09-30
EP0818796B1 true 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 (xx)
DE (2) DE19627969A1 (xx)
ES (1) ES2230578T3 (xx)
SI (1) SI0818796T1 (xx)
TR (1) TR199700563A2 (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824871A1 (de) * 1998-06-04 1999-12-09 Ego Elektro Geraetebau Gmbh Temperaturschalter, insbesondere einstellbarer Temperaturregler
DE19847503A1 (de) * 1998-10-15 2000-04-20 Ego Elektro Geraetebau Gmbh Elektrische Schalteinrichtung
EP1569257B1 (de) 2004-02-24 2006-07-12 Electrovac, Fabrikation elektrotechnischer Spezialartikel Gesellschaft m.b.H. Temperaturfühler
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
CN112660274A (zh) * 2021-01-14 2021-04-16 孟海玲 一种防雨型自行车

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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 (xx) * 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

Also Published As

Publication number Publication date
EP0818796A3 (de) 1998-09-30
DE59711967D1 (de) 2004-11-04
TR199700563A2 (xx) 1998-01-21
EP0818796A2 (de) 1998-01-14
SI0818796T1 (en) 2005-06-30
ES2230578T3 (es) 2005-05-01
DE19627969A1 (de) 1998-01-15

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